1.
Geographic coordinate system
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A geographic coordinate system is a coordinate system used in geography that enables every location on Earth to be specified by a set of numbers, letters or symbols. The coordinates are chosen such that one of the numbers represents a vertical position. A common choice of coordinates is latitude, longitude and elevation, to specify a location on a two-dimensional map requires a map projection. The invention of a coordinate system is generally credited to Eratosthenes of Cyrene. Ptolemy credited him with the adoption of longitude and latitude. Ptolemys 2nd-century Geography used the prime meridian but measured latitude from the equator instead. Mathematical cartography resumed in Europe following Maximus Planudes recovery of Ptolemys text a little before 1300, in 1884, the United States hosted the International Meridian Conference, attended by representatives from twenty-five nations. Twenty-two of them agreed to adopt the longitude of the Royal Observatory in Greenwich, the Dominican Republic voted against the motion, while France and Brazil abstained. France adopted Greenwich Mean Time in place of local determinations by the Paris Observatory in 1911, the latitude of a point on Earths surface is the angle between the equatorial plane and the straight line that passes through that point and through the center of the Earth. Lines joining points of the same latitude trace circles on the surface of Earth called parallels, as they are parallel to the equator, the north pole is 90° N, the south pole is 90° S. The 0° parallel of latitude is designated the equator, the plane of all geographic coordinate systems. The equator divides the globe into Northern and Southern Hemispheres, the longitude of a point on Earths surface is the angle east or west of a reference meridian to another meridian that passes through that point. All meridians are halves of great ellipses, which converge at the north and south poles, the prime meridian determines the proper Eastern and Western Hemispheres, although maps often divide these hemispheres further west in order to keep the Old World on a single side. The antipodal meridian of Greenwich is both 180°W and 180°E, the combination of these two components specifies the position of any location on the surface of Earth, without consideration of altitude or depth. The grid formed by lines of latitude and longitude is known as a graticule, the origin/zero point of this system is located in the Gulf of Guinea about 625 km south of Tema, Ghana. To completely specify a location of a feature on, in, or above Earth. Earth is not a sphere, but a shape approximating a biaxial ellipsoid. It is nearly spherical, but has an equatorial bulge making the radius at the equator about 0. 3% larger than the radius measured through the poles, the shorter axis approximately coincides with the axis of rotation
2.
U.S. Route 101 in California
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U. S. Route 101 in the state of California is one of the last remaining and longest U. S. Routes still active in the state, and the longest highway of any kind in California, US101 was also one of the original national routes established in 1926. Significant portions of US101 between the Los Angeles area and the San Francisco Bay Area follow El Camino Real, the road connecting the former Alta Californias 21 missions. US101 also has designated as the Santa Ana Freeway, Hollywood Freeway, Ventura Freeway, South Valley Freeway. This route is part of the California Freeway and Expressway System, the south terminus of US101 is in Los Angeles, about one mile east of downtown Los Angeles at the East Los Angeles Interchange, also known as the Commuters Complex. This southernmost portion is named the Santa Ana Freeway, inheriting that title as the extension of the roadway now known as I-5. From here, US101 becomes the Hollywood Freeway and it then heads to Hollywood and up through the Cahuenga Pass before reaching the San Fernando Valley. US101 then intersects with SR134 and SR170 at the known as the Hollywood Split. Here, the alignment of US101 shifts to the alignment of SR134, though confusing, the Hollywood Freeway name continues northward from this interchange on SR170, and the Ventura Freeway name continues eastward to SR134. From the Hollywood Split, US101 is an east–west highway and it meets with I-405 in Sherman Oaks, an interchange which holds claim to the most traveled intersection in the nation. Upon reaching Ventura, there is an interchange with SR126, North of Ventura, US101 switches intermittently between freeway and expressway status, but there are no traffic signals until San Francisco. From Ventura and through Santa Barbara, US101 closely follows the Pacific coastline until Gaviota State Park, at Gaviota State Park, the highway shifts back from an east–west highway to a north–south alignment. About one mile north of this point, US101 passes through the Gaviota Tunnel, a few miles north of the Gaviota Tunnel, SR1 splits from US101 and heads northwest, running along the Pacific coastline parallel and to the west of US101. US101 passes through Buellton, Los Alamos, Orcutt, Santa Maria, South of Santa Maria, US101 widens from a four-lane highway to a six-lane freeway. SR166 joins US101 for about 3 miles before splitting just north of the city limits, farther north, SR1 rejoins US101 between Pismo Beach and San Luis Obispo. Then US101 takes a route through the Salinas Valley, while Highway 1 heads northwest, running along the Pacific coastline in California, parallel. A steep segment between San Luis Obispo and Atascadero is known as the Cuesta Grade, North of Atascadero, the highway joins SR46 for about three miles through Paso Robles. From Paso Robles to Salinas, US101 is a known as the Salinas River Valley Highway
3.
California State Route 1
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State Route 1 is a major north-south state highway that runs along most of the Pacific coastline of the U. S. state of California. At a total of just over 655.8 miles, it is the longest state route in California, Highway 1 has several portions designated as either Pacific Coast Highway, Cabrillo Highway, Shoreline Highway, or Coast Highway. Its southern terminus is at Interstate 5 near Dana Point in Orange County, Highway 1 also at times runs concurrently with US101, most notably through a 54-mile stretch in Ventura and Santa Barbara counties, and across the Golden Gate Bridge. The highway is designated as an All-American Road, SR1 was built piecemeal in various stages, with the first section opening in the Big Sur region in the 1930s. However, portions of the route had several names and numbers over the years as more segments opened and it was not until the 1964 state highway renumbering that the entire route was officially designated as Highway 1. Highway 1 is part of the California Freeway and Expressway System and is eligible for the State Scenic Highway System, however, only a few stretches between Los Angeles and San Francisco have officially been designated as a scenic highway. The Big Sur section from San Luis Obispo to Carmel is an official National Scenic Byway, the entire route is designated as a Blue Star Memorial Highway to recognize those in the United States armed forces. In Southern California, the California Legislature has designated the segment between Interstate 5 in Dana Point and US101 near Oxnard as the Pacific Coast Highway, the legislature has also designated the route as the Shoreline Highway between the Manzanita Junction near Marin City and Leggett. Smaller segments of the highway have been assigned other names by the state. The legislature has relinquished state control of segments within Dana Point, Newport Beach, Santa Monica, and Oxnard. The route annually helps bring several billion dollars to the tourism industry. Segments of Highway 1 range from a rural road to an urban freeway. Because of the former, long distance thru traffic traveling between the metropolitan areas are instead advised to use faster routes such as US101 or I-5. At its southernmost end in Orange County, Highway 1 terminates at I-5 in Capistrano Beach in Dana Point and it then travels west into the city center. After leaving Dana Point, Highway 1 continues northwest along the coast through Laguna Beach, Highway 1 then enters Newport Beach, where it is known as simply Coast Highway. Upon entering Huntington Beach, Highway 1 regains the Pacific Coast Highway designation and it passes Huntington State Beach and the southern terminus of California State Route 39 before reaching Bolsa Chica State Beach and the Bolsa Chica Ecological Reserve. PCH then continues along the coast into Seal Beach, the city on its journey in Orange County. PCH enters Los Angeles County and the city of Long Beach after crossing the San Gabriel River, Highway 1 then continues northwest through the city to its junction with Lakewood Boulevard and Los Coyotes Diagonal at the Los Alamitos Circle, more than 2 miles from the coast
4.
Golden Gate
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The Golden Gate is a strait on the west coast of North America that connects San Francisco Bay to the Pacific Ocean. It is defined by the headlands of the San Francisco Peninsula and the Marin Peninsula, the strait is well known today for its depth and powerful tidal currents from the Pacific Ocean. Many small whirlpools and eddies can form in its waters, with its strong currents, rocky reefs and fog, the Golden Gate is the site of over 100 shipwrecks. The Golden Gate is often shrouded in fog, especially during the summer, heat generated in the California Central Valley causes air there to rise, creating a low pressure area that pulls in cool, moist air from over the Pacific Ocean. The Golden Gate forms the largest break in the hills of the California Coast Range, allowing a persistent, dense stream of fog to enter the bay there. Before the Europeans arrived in the 18th century, the area around the strait, descendants of both tribes remain in the area. The strait was surprisingly elusive for early European explorers, presumably due to this persistent summer fog. The strait is not recorded in the voyages of Juan Rodríguez Cabrillo nor Francis Drake, the strait is also unrecorded in observations by Spanish galleons returning from the Philippines that laid up in nearby Drakes Bay to the north. These galleons rarely passed east of the Farallon Islands, fearing the possibility of rocks between the islands and the mainland, the first recorded observation of the strait occurred nearly two hundred years later than the earliest European explorations of the coast. Until the 1840s, the strait was called the Boca del Puerto de San Francisco, on 1 July 1846, before the discovery of gold in California, the entrance acquired a new name. Frémont wrote, To this Gate I gave the name of Chrysopylae, or Golden Gate, for the reasons that the harbor of Byzantium was called Chrysoceras. In the 1920s, no bridge spanned the watery expanse between San Francisco and Marin in California—so when the U. S, post Office issued a postage stamp on 1 May 1923, celebrating The Golden Gate, the issue naturally portrayed the scene without a bridge. The Golden Gate Bridge is a bridge spanning the Golden Gate. As part of both US Highway 101 and California Route 1, it connects the city of San Francisco on the tip of the San Francisco Peninsula to Marin County. The Golden Gate Bridge was the longest suspension span in the world when completed in 1937. Since its completion, the length has been surpassed by eight other bridges. It still has the second longest suspension bridge span in the United States. In 2007, it was ranked fifth on the List of Americas Favorite Architecture by the American Institute of Architects, Golden Gate Park, located in San Francisco, California, is a large urban park consisting of 1,017 acres of public grounds
5.
San Francisco
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San Francisco, officially the City and County of San Francisco, is the cultural, commercial, and financial center of Northern California. It is the birthplace of the United Nations, the California Gold Rush of 1849 brought rapid growth, making it the largest city on the West Coast at the time. San Francisco became a consolidated city-county in 1856, after three-quarters of the city was destroyed by the 1906 earthquake and fire, San Francisco was quickly rebuilt, hosting the Panama-Pacific International Exposition nine years later. In World War II, San Francisco was a port of embarkation for service members shipping out to the Pacific Theater. Politically, the city votes strongly along liberal Democratic Party lines, San Francisco is also the headquarters of five major banking institutions and various other companies such as Levi Strauss & Co. Dolby, Airbnb, Weebly, Pacific Gas and Electric Company, Yelp, Pinterest, Twitter, Uber, Lyft, Mozilla, Wikimedia Foundation, as of 2016, San Francisco is ranked high on world liveability rankings. The earliest archaeological evidence of habitation of the territory of the city of San Francisco dates to 3000 BC. Upon independence from Spain in 1821, the became part of Mexico. Under Mexican rule, the system gradually ended, and its lands became privatized. In 1835, Englishman William Richardson erected the first independent homestead, together with Alcalde Francisco de Haro, he laid out a street plan for the expanded settlement, and the town, named Yerba Buena, began to attract American settlers. Commodore John D. Sloat claimed California for the United States on July 7,1846, during the Mexican–American War, montgomery arrived to claim Yerba Buena two days later. Yerba Buena was renamed San Francisco on January 30 of the next year, despite its attractive location as a port and naval base, San Francisco was still a small settlement with inhospitable geography. The California Gold Rush brought a flood of treasure seekers, with their sourdough bread in tow, prospectors accumulated in San Francisco over rival Benicia, raising the population from 1,000 in 1848 to 25,000 by December 1849. The promise of fabulous riches was so strong that crews on arriving vessels deserted and rushed off to the gold fields, leaving behind a forest of masts in San Francisco harbor. Some of these approximately 500 abandoned ships were used at times as storeships, saloons and hotels, many were left to rot, by 1851 the harbor was extended out into the bay by wharves while buildings were erected on piles among the ships. By 1870 Yerba Buena Cove had been filled to create new land, buried ships are occasionally exposed when foundations are dug for new buildings. California was quickly granted statehood in 1850 and the U. S. military built Fort Point at the Golden Gate, silver discoveries, including the Comstock Lode in Nevada in 1859, further drove rapid population growth. With hordes of fortune seekers streaming through the city, lawlessness was common, and the Barbary Coast section of town gained notoriety as a haven for criminals, prostitution, entrepreneurs sought to capitalize on the wealth generated by the Gold Rush
6.
California
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California is the most populous state in the United States and the third most extensive by area. Located on the western coast of the U. S, California is bordered by the other U. S. states of Oregon, Nevada, and Arizona and shares an international border with the Mexican state of Baja California. Los Angeles is Californias most populous city, and the second largest after New York City. The Los Angeles Area and the San Francisco Bay Area are the nations second- and fifth-most populous urban regions, California also has the nations most populous county, Los Angeles County, and its largest county by area, San Bernardino County. The Central Valley, an agricultural area, dominates the states center. What is now California was first settled by various Native American tribes before being explored by a number of European expeditions during the 16th and 17th centuries, the Spanish Empire then claimed it as part of Alta California in their New Spain colony. The area became a part of Mexico in 1821 following its war for independence. The western portion of Alta California then was organized as the State of California, the California Gold Rush starting in 1848 led to dramatic social and demographic changes, with large-scale emigration from the east and abroad with an accompanying economic boom. If it were a country, California would be the 6th largest economy in the world, fifty-eight percent of the states economy is centered on finance, government, real estate services, technology, and professional, scientific and technical business services. Although it accounts for only 1.5 percent of the states economy, the story of Calafia is recorded in a 1510 work The Adventures of Esplandián, written as a sequel to Amadis de Gaula by Spanish adventure writer Garci Rodríguez de Montalvo. The kingdom of Queen Calafia, according to Montalvo, was said to be a land inhabited by griffins and other strange beasts. This conventional wisdom that California was an island, with maps drawn to reflect this belief, shortened forms of the states name include CA, Cal. Calif. and US-CA. Settled by successive waves of arrivals during the last 10,000 years, various estimates of the native population range from 100,000 to 300,000. The Indigenous peoples of California included more than 70 distinct groups of Native Americans, ranging from large, settled populations living on the coast to groups in the interior. California groups also were diverse in their organization with bands, tribes, villages. Trade, intermarriage and military alliances fostered many social and economic relationships among the diverse groups, the first European effort to explore the coast as far north as the Russian River was a Spanish sailing expedition, led by Portuguese captain Juan Rodríguez Cabrillo, in 1542. Some 37 years later English explorer Francis Drake also explored and claimed a portion of the California coast in 1579. Spanish traders made unintended visits with the Manila galleons on their trips from the Philippines beginning in 1565
7.
Marin County, California
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Marin County /məˈrɪn/ is a county located in the San Francisco Bay Area of the U. S. state of California. As of the 2010 census, the population was 252,409 and its county seat is San Rafael. Marin County is included in the San Francisco-Oakland-Hayward, CA Metropolitan Statistical Area across the Golden Gate Bridge from San Francisco, Marin County is one of the wealthiest localities in the United States, known for its affluence. In May 2009, Marin County had the fifth highest income per capita in the United States at about $91,480, the county is governed by the Marin County Board of Supervisors. The county is well known for its natural beauty and liberal politics. San Quentin Prison is located in the county, as is George Lucas Skywalker Ranch, autodesk, the publisher of AutoCAD, is also located there, as well as numerous other high-tech companies. The Marin County Civic Center was designed by Frank Lloyd Wright and draws thousands of visitors a year to guided tours of its arch, in 1994, a new county jail facility was embedded into the hillside nearby. Marin Countys natural sites include the Muir Woods redwood forest, the Marin Headlands, Stinson Beach, the Point Reyes National Seashore, the United States oldest cross country running event, the Dipsea Race, takes place annually in Marin County, attracting thousands of athletes. Mountain biking was invented on the slopes of Mount Tamalpais in Marin, According to General Mariano Vallejo, who headed an 1850 committee to name Californias counties, the county was named for Marin, great chief of the tribe Licatiut. Marin had been named Huicmuse until he was baptized as Marino at about age 20, Marin / Marino was born into the Huimen people, a Coast Miwok tribe of Native Americans who inhabited the San Rafael area. Vallejo believed that Chief Marin had waged several fierce battles against the Spanish, starting in 1817, he served as an alcalde at the San Rafael Mission, where he lived from 1817 off and on until his death. The Coast Miwok Indians were hunters and gatherers whose ancestors had occupied the area for thousands of years, about 600 village sites have been identified in the county. The Coast Miwok numbered in the thousands, today, there are few left and even fewer with any knowledge of their Coast Miwok lineage. Efforts are being made so that they are not forgotten, francis Drake and the crew of the Golden Hind was thought to have landed on the Marin coast in 1579 claiming the land as Nova Albion. A bronze plaque inscribed with Drakes claim to the new lands and this so-called Drakes Plate of Brass was revealed as a hoax in 2003. In 1595, Sebastian Cermeno lost his ship, the San Agustin, the Spanish explorer Vizcaíno landed about twenty years after Drake in what is now called Drakes Bay. According to the U. S. Census Bureau, the county has an area of 828 square miles. It is the fourth-smallest county in California by land area
8.
Art Deco
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Art Deco, sometimes simply referred to as Deco, is a style of visual arts, architecture and design that first appeared in France just before World War I. It took its name, short for Arts Decorators, from the Exposition Internationale des Arts Décoratifs et Industriels Modernes held in Paris in 1925 and it combined modernist styles with fine craftsmanship and rich materials. During its heyday, Art Deco represented luxury, glamour, exuberance, Art Deco was a pastiche of many different styles, sometimes contradictory, united by a desire to be modern. It featured rare and expensive materials such as ebony and ivory, the Chrysler Building and other skyscrapers of New York were the most visible monuments of the new style. In the 1930s, during the Great Depression, the became more subdued. New materials arrived, including chrome plating, stainless steel and plastic, a more sleek form of the style, called Streamline Moderne, appeared in the 1930s, it featured curving forms and smooth, polished surfaces. Art Deco became one of the first truly international architectural styles, with examples found in European cities, the style came to an end with the beginning of World War II. Deco was replaced as the dominant global style by the functional and unadorned styles of modernism. The term arts décoratifs was first used in France in 1858, in 1868, Le Figaro newspaper used the term art décoratifs with respect to objects for stage scenery created for the Théâtre de lOpéra. In 1875, furniture designers, textile, jewelry and glass designers and it took its present name of ENSAD in 1927. The term Art déco was then used in a 1966 newspaper article by Hillary Gelson in the Times, describing the different styles at the exhibit. Art Deco gained currency as a broadly applied stylistic label in 1968 when historian Bevis Hillier published the first major book on the style. Hillier noted that the term was already being used by art dealers and cites The Times, in 1971, Hillier organized an exhibition at the Minneapolis Institute of Arts, which he details in his book about it, The World of Art Deco. The emergence of Art Deco was closely connected with the rise in status of decorative artists, the term arts décoratifs had been invented in 1875, giving the designers of furniture, textiles, and other decoration official status. The Société des artistes décorateurs, or SAD, was founded in 1901, a similar movement developed in Italy. The first international exhibition devoted entirely to the arts, the Esposizione international dArte decorative moderna, was held in Turin in 1902. Several new magazines devoted to decorative arts were founded in Paris, including Arts et décoration, Decorative arts sections were introduced into the annual salons of the Sociéte des artistes français, and later in the Salon dautomne. French nationalism also played a part in the resurgence of decorative arts, in 1911 the SAD proposed the holding of a major new international exposition of decorative arts in 1912
9.
Suspension bridge
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A suspension bridge is a type of bridge in which the deck is hung below suspension cables on vertical suspenders. The first modern examples of type of bridge were built in the early 19th century. Simple suspension bridges, which lack vertical suspenders, have a history in many mountainous parts of the world. This type of bridge has cables suspended between towers, plus vertical suspender cables carry the weight of the deck below, upon which traffic crosses. This arrangement allows the deck to be level or to arc upward for additional clearance, like other suspension bridge types, this type often is constructed without falsework. The suspension cables must be anchored at each end of the bridge, the main cables continue beyond the pillars to deck-level supports, and further continue to connections with anchors in the ground. The roadway is supported by vertical suspender cables or rods, called hangers, in the latter case there will be very little arc in the outboard main cables. The earliest suspension bridges were ropes slung across a chasm, with a deck possibly at the level or hung below the ropes such that the rope had a catenary shape. The Tibetan saint and bridge-builder Thangtong Gyalpo originated the use of chains in his version of simple suspension bridges. In 1433, Gyalpo built eight bridges in eastern Bhutan, the last surviving chain-linked bridge of Gyalpos was the Thangtong Gyalpo Bridge in Duksum en route to Trashi Yangtse, which was finally washed away in 2004. Gyalpos iron chain bridges did not include a deck bridge which is the standard on all modern suspension bridges today. Instead, both the railing and the layer of Gyalpos bridges used wires. The stress points that carried the screed were reinforced by the iron chains, before the use of iron chains it is thought that Gyalpo used ropes from twisted willows or yak skins. He may have also used tightly bound cloth, the first American iron chain suspension bridge was the Jacobs Creek Bridge in Westmoreland County, Pennsylvania, designed by inventor James Finley. Finleys bridge was the first to all of the necessary components of a modern suspension bridge. Finley patented his design in 1808, and published it in the Philadelphia journal, The Port Folio, in 1810. Early British chain bridges included the Dryburgh Abbey Bridge and 137 m Union Bridge, with rapidly increasing to 176 m with the Menai Bridge. The first chain bridge on the European continent was the Chain Bridge in Nuremberg, the Clifton Suspension Bridge is one of the longest of the parabolic arc chain type
10.
Truss arch bridge
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A truss arch bridge combines the elements of the truss bridge and the arch bridge. The actual resolution of forces will depend upon the design, if no horizontal thrusting forces are generated this becomes an arch-shaped truss, essentially a bent beam – see moon bridge for an example. If horizontal thrust is generated but the apex of the arch is a pin joint, if no hinge exists at the apex, it will normally be a two-hinged arch. In the Iron Bridge shown below, the structure of each frame emulates the kind of structure that previously had made of wood. Such rigid structures were developed in the 20th century as the Vierendeel truss. The Iron Bridge, the first metal bridge of any kind, maria Pia Bridge, Gustave Eiffels pioneering two-hinge arch. Hurricane Deck Bridge, the last remaining truss-type bridge on Lake of the Ozarks in central Missouri, i-35W Mississippi River bridge bridge that collapsed in 2007 in Minneapolis, Minnesota, USA. Navajo Bridge and newer bridge of the general construction, each built as unsupported cantilevers joined with a central pin
11.
Truss bridge
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A truss bridge is a bridge whose load-bearing superstructure is composed of a truss, a structure of connected elements usually forming triangular units. The connected elements may be stressed from tension, compression, or sometimes both in response to dynamic loads, Truss bridges are one of the oldest types of modern bridges. The basic types of truss bridges shown in this article have simple designs which could be analyzed by 19th-. A truss bridge is economical to construct because it uses materials efficiently, the nature of a truss allows the analysis of the structure using a few assumptions and the application of Newtons laws of motion according to the branch of physics known as statics. For purposes of analysis, trusses are assumed to be pin jointed where the components meet. This assumption means that members of the truss will act only in tension or compression, a more complex analysis is required where rigid joints impose significant bending loads upon the elements, as in a Vierendeel truss. The central vertical member stabilizes the upper member, preventing it from buckling. If the top member is sufficiently stiff then this element may be eliminated. If the lower chord is sufficiently resistant to bending and shear, the vertical elements may be eliminated. The ability to distribute the forces in various ways has led to a variety of truss bridge types. In other cases the appearance of the structure may take on greater importance, a pure truss can be represented as a pin-jointed structure, one where the only forces on the truss members are tension or compression, not bending. This is used in the teaching of statics, by the building of bridges from spaghetti. Spaghetti is brittle and although it can carry a modest tension force, a model spaghetti bridge thus demonstrates the use of a truss structure to produce a usefully strong complete structure from individually weak elements. In 1820 a simple form of truss, Towns lattice truss, was patented, few iron truss bridges were built in the United States before 1850. Truss bridges became a type of bridge built from the 1870s through the 1930s. Examples of these still remain across the US, but their numbers are dropping rapidly. As metal slowly started to replace timber, wrought iron bridges in the US started being built on a scale in the 1870s. Bowstring truss bridges were a common truss design during this time, companies like the Massillon Bridge Company of Massillon, Ohio and the King Bridge Company of Cleveland, Ohio became well-known, as they marketed their designs to cities and townships
12.
Tide
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Tides are the rise and fall of sea levels caused by the combined effects of the gravitational forces exerted by the Moon and the Sun and the rotation of the Earth. Some shorelines experience a semi-diurnal tide—two nearly equal high and low tides each day, other locations experience a diurnal tide—only one high and low tide each day. A mixed tide—two uneven tides a day, or one high, Tides vary on timescales ranging from hours to years due to a number of factors. To make accurate records, tide gauges at fixed stations measure water level over time, gauges ignore variations caused by waves with periods shorter than minutes. These data are compared to the level usually called mean sea level. Tidal phenomena are not limited to the oceans, but can occur in other systems whenever a gravitational field varies in time. For example, the part of the Earth is affected by tides. Tide changes proceed via the following stages, Sea level rises over several hours, covering the intertidal zone, the water rises to its highest level, reaching high tide. Sea level falls over several hours, revealing the intertidal zone, the water stops falling, reaching low tide. Oscillating currents produced by tides are known as tidal streams, the moment that the tidal current ceases is called slack water or slack tide. The tide then reverses direction and is said to be turning, slack water usually occurs near high water and low water. But there are locations where the moments of slack tide differ significantly from those of high, Tides are commonly semi-diurnal, or diurnal. The two high waters on a day are typically not the same height, these are the higher high water. Similarly, the two low waters each day are the low water and the lower low water. The daily inequality is not consistent and is small when the Moon is over the equator. From the highest level to the lowest, Highest Astronomical Tide – The highest tide which can be predicted to occur, note that meteorological conditions may add extra height to the HAT. Mean High Water Springs – The average of the two high tides on the days of spring tides, mean High Water Neaps – The average of the two high tides on the days of neap tides. Mean Sea Level – This is the sea level
13.
Irving Morrow
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Morrow was an American architect best known for designing the Golden Gate Bridge in San Francisco, California. Morrow graduated from the newly founded University of California, Berkeley architecture program in 1906 and he then attended the École nationale supérieure des Beaux-Arts in Paris from 1908 until 1911. He moved back to Oakland and began practicing architecture in San Francisco and he designed houses, banks, theatres, hotels, schools, and commercial buildings. He married Gertrude Comfort Morrow, an architect and UC Berkeley graduate. He worked with Gertrude and architect William I, garren, and with them designed the Alameda-Contra Costa County Building for the 1939 Golden Gate International Exposition. Morrow and his associates designed the rectory and guest house of the Mission San Juan Bautista. Morrow was hired in 1930 by Joseph Strauss to design the Golden Gate Bridge, Morrow collaborated with Strauss with the design, sketching his ideas in charcoal. It was also Morrow that decided the bridge should be painted international orange, at first, Morrows suggestion was deemed by the bridge authorities as ludicrous, as it was thought no paint could withstand the salty weather. Morrow found such a paint, and the authorities relented. He served as chairman on the Section on Architecture of the Commonwealth Club of California, and director of the American Historical Building Survey
14.
Joseph Strauss (engineer)
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Joseph Baermann Strauss was an American structural engineer who revolutionized the design of bascule bridges. He was the engineer of the Golden Gate Bridge, a suspension bridge. He was born in Cincinnati, Ohio, to a family of Jewish German ancestry, having a mother who was a pianist and a father, Raphael Strauss. His pianist mother had an accident which ultimately ended her concert career. He graduated from the University of Cincinnati in 1892 and he served as both class poet and president, and is a brother of the Sigma Alpha Epsilon fraternity. Strauss graduated with a degree in civil engineering, after completion of the Golden Gate Bridge he returned to his passion of poetry and wrote his most recognizable poem The Mighty Task is Done. He also wrote an awe-inspiring poem The Redwoods and his moving poem Sequoia can still be purchased by tourists visiting the California redwoods. He died in Los Angeles, California, just one year after the Golden Gates completion and his statue can be seen on the San Francisco side of the bridge. He is interred at Forest Lawn Memorial Park in The Great Mausoleum, Sanctuary of Meditation and he was hospitalized while in college and his hospital room overlooked the John A. Roebling Suspension Bridge. This sparked his interest in bridges, upon graduating from the University of Cincinnati, Strauss worked at the Office of Ralph Modjeski, a firm which specialized in building bridges. At that time, bascule bridges were built with expensive iron counterweights and he proposed using cheaper concrete counterweights in place of iron. When his ideas were rejected, he left the firm and started his own firm, the Strauss Bascule Bridge Company of Chicago, where he revolutionized the design of bascule bridges. Strauss was the designer of the Burnside Bridge in Portland, Oregon, Strauss also worked with the Dominion Bridge Company in building the Cherry Street Strauss Trunnion Bascule Bridge in Toronto. In 1912 he designed the HB&T Railway bascule bridge over Buffalo Bayou in Houston and his design was also exported to Norway where Skansen Bridge is still in daily use. As Chief engineer of the Golden Gate Bridge in San Francisco, California and he had to find funding and support for the bridge from the citizens and the U. S. military. There were also innovations in the way the bridge was constructed and it had to span one of the greatest distances ever spanned, reach heights that hadnt been seen in a bridge, and hold up to the forces of the ocean. He placed a brick from the demolished McMicken Hall at his alma mater, Strauss was concerned with the safety of his workers. He required that a net be installed beneath the Golden Gate Bridge during construction and this net saved a total of 19 lives
15.
Annual average daily traffic
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Annual average daily traffic, abbreviated AADT, is a measure used primarily in transportation planning and transportation engineering. Traditionally, it is the volume of vehicle traffic of a highway or road for a year divided by 365 days. AADT is a useful and simple measurement of how busy the road is, newer advances from traffic data providers are now providing AADT by side of the road, by day of week and by time of day. One of the most important uses of AADT is for determining funding for the maintenance, in the United States the amount of federal funding a state will receive is related to the total traffic measured across its Highway network. Each year on June 15, every state in the United States submits a Highway Performance Monitoring System HPMS report, the HPMS report contains various information regarding the road segments in the state based on a sample of the road segments. In the report, the AADT is converted to Vehicle Miles Traveled, VMT is the AADT multiplied by the length of the road segment. To determine the amount of traffic a state has, the AADT cannot be summed for all road segments since an AADT is a rate, the VMT is summed and is used as an indicator of the amount of traffic a state has. For federal-funding, formulas are applied to include the VMT and other highway statistics, to measure AADT on individual road segments, traffic data is collected either by an automated traffic counter or hiring an observer to record traffic. There are two different techniques of measuring the AADTs for road segments, one technique is called continuous count data collection method. This is where sensors are embedded into a road and traffic data is measured all 365 days. The AADT would be the sum of the traffic for the entire year divided by 365 days. There is a problem calculating the AADT with this method. The continuous count equipment is not operating for the full 365 days due to being shut down for maintenance or repair, because of this, seasonal or day-of-week biases might skew the calculated AADT. In 1992, AASHTO released the AASHTO Guidelines for Traffic Data Programs, for every month and day-of-week, a Monthly Average Day of Week is calculated. Each day-of-weeks MADW is then calculated across months to calculate an Annual Average Day of Week, finally, the AADWs are averaged to calculate an AADT. The United States Federal Highway Administration has adopted this method as the method in the. While providing the most accurate AADT, installing and maintaining continuous count stations method is costly, most agencies are only able to monitor a very small percentage of the roadway using this method. Most AADTs are generated using data collection methods sometimes known as the coverage count data collection method
16.
FasTrak
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FasTrak is the electronic toll collection system used in the state of California in the United States. The system is used statewide on all of the roads, toll bridges. As with other ETC systems, FasTrak is designed to eliminate the need for cars to stop to pay at toll booths and its use of technology to improve transit is in line with the U. S. Department of Transportations Intelligent Transportation Systems initiative. Under Californias government structure, the states toll facilities are operated by various agencies, three years later, Transportation Corridor Agencies opened the Foothill Toll Road in Orange County, implementing the statewide ETC system for the first time, and naming it FasTrak. The state continues to delegate the responsibility of selling and maintaining FasTrak accounts to the different toll agencies, under California law, the California Department of Transportation was given the mandate to develop and maintain an open, statewide ETC specification. This specification is known in the industry as Title 21 after it was added to Title 21 of the California Code of Regulations. FasTrak uses RFID technology near 915 MHz to read data from a placed in a vehicle moving at speeds that may exceed 70 mph. The RFID transponder in each vehicle is associated with a debit account, each time the vehicle passes underneath a toll collection site. Currently, FasTrak transponders are not compatible with E-ZPass and other ETC systems used in other states because they use a different specification than Title 21. If the license plate is registered as belonging to a FasTrak user, the account is debited only the toll charge and this is a backup in case a transponder fails to read. Otherwise, a violation notice is sent to the registered owner of the vehicle. A license plate may be listed only on one account, a toll collected based on a license plate is called an Image Toll and can be identified on the customer statement by noticing the license plate number listed instead of the transponder number. If one fails to correctly list license plates on their account, conversely, a license plate should be removed from an account after a change in ownership. Failure to do so may result in paying for another drivers tolls via the Image Toll process, each toll agency in Southern California has their own billing and customer service center. For convenience, all facilities in the San Francisco Bay Area instead share the same billing. Each center establishes its own fee and discount structures, and people may be charged a fee if the majority of their FasTrak use occurs elsewhere, a teardown analysis of the transponder and analysis of its security issues was published at Black Hat 2008. They are updated remotely, and do not use encryption, FasTrak units are used to generate 5-1-1 traffic data, using sensors and antennae placed across various freeways. As the first ETC system in North America was installed on the Dallas North Tollway in 1989, as a result, California was the first in the nation to require all of its toll bridges and roads to use the same ETC system
17.
California Historical Landmark
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California Historical Landmarks are buildings, structures, sites, or places in the state of California that have been determined to have statewide historical landmark significance. Historical significance is determined by meeting at least one of the criteria listed below, The first, last, only, associated with an individual or group having a profound influence on the history of California. California Historical Landmarks of #770 and above are listed in the California Register of Historical Resources. By contrast, a site, building, feature, or event that is of local significance may be designated as a California Point of Historical Interest. List of California Historical Landmarks by county National Historic Sites National Register of Historic Places listings in California — with links to list articles by county, los Angeles Historic-Cultural Monuments San Francisco Designated Landmarks Johnson, Marael. A Guide to California Roadside Historical Markers, official OHP—California Office of Historic Preservation website OHP, California Historical Sites searchpage — links to lists by county
18.
Strait
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A strait is a naturally formed, narrow, typically navigable waterway that connects two larger bodies of water. Most commonly it is a channel of water that lies between two land masses, some straits are not navigable, for example because they are too shallow, or because of an unnavigable reef or archipelago. The terms channel, pass or passage, can be synonymous and used interchangeably with strait, in Scotland firth or kyle are also sometimes used as synonyms for strait. Straits can be important shipping routes, and wars have been fought for control of them, numerous artificial channels, called canals, have been constructed to connect two bodies of water over land, such as the Suez Canal. Although rivers and canals often provide passage between two large lakes or a lake and a sea, and these seem to suit the formal definition of strait, the term strait is typically reserved for much larger, wider features of the marine environment. There are exceptions, with straits being called canals, Pearse Canal, Straits are the converse of isthmuses. That is, while a strait lies between two masses and connects two larger bodies of water, an isthmus lies between two bodies of water and connects two larger land masses. Some straits have the potential to generate significant tidal power using tidal stream turbines, tides are more predictable than wave power or wind power. The Pentland Firth may be capable of generating 10 GW, cook Strait in New Zealand may be capable of generating 5. There may be no suspension of innocent passage through such straits, list of straits Media related to Straits at Wikimedia Commons
19.
San Francisco Bay
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San Francisco Bay is a shallow estuary in the U. S. state of California. It is surrounded by a region known as the San Francisco Bay Area, dominated by the large cities San Francisco, Oakland. San Francisco Bay drains water from approximately 40 percent of California and it then connects to the Pacific Ocean via the Golden Gate strait. However, this group of interconnected bays is often called the San Francisco Bay. The bay was designated a Ramsar Wetland of International Importance on February 2,2013, the bay covers somewhere between 400 and 1,600 square miles, depending on which sub-bays, estuaries, wetlands, and so on are included in the measurement. The main part of the bay measures 3 to 12 miles wide east-to-west and it is the largest Pacific estuary in the Americas. Later, wetlands and inlets were filled in, reducing the Bays size since the mid-19th century by as much as one third. Recently, large areas of wetlands have been restored, further confusing the issue of the Bays size, despite its value as a waterway and harbor, many thousands of acres of marshy wetlands at the edges of the bay were, for many years, considered wasted space. As a result, soil excavated for building projects or dredged from channels was often dumped onto the wetlands, from the mid-19th century through the late 20th century, more than a third of the original bay was filled and often built on. The idea was, and remains, controversial, there are five large islands in San Francisco Bay. Alameda, the largest island, was created when a shipping lane was cut in 1901 and it is now predominantly a bedroom community. Angel Island was known as Ellis Island West because it served as the point for immigrants from East Asia. It is now a park accessible by ferry. Mountainous Yerba Buena Island is pierced by a tunnel linking the east and west spans of the San Francisco–Oakland Bay Bridge, attached to the north is the artificial and flat Treasure Island, site of the 1939 Golden Gate International Exposition. From the Second World War until the 1990s, both served as military bases and are now being redeveloped. Isolated in the center of the Bay is Alcatraz, the site of the federal penitentiary. The federal prison on Alcatraz Island no longer functions, but the complex is a popular tourist site, despite its name, Mare Island in the northern part of the bay is a peninsula rather than an island. During the last ice age, the now filled by the bay was a large linear valley with small hills
20.
Pacific Ocean
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The Pacific Ocean is the largest and deepest of the Earths oceanic divisions. It extends from the Arctic Ocean in the north to the Southern Ocean in the south and is bounded by Asia and Australia in the west, the Mariana Trench in the western North Pacific is the deepest point in the world, reaching a depth of 10,911 metres. Both the center of the Water Hemisphere and the Western Hemisphere are in the Pacific Ocean, the oceans current name was coined by Portuguese explorer Ferdinand Magellan during the Spanish circumnavigation of the world in 1521, as he encountered favourable winds on reaching the ocean. He called it Mar Pacífico, which in both Portuguese and Spanish means peaceful sea, important human migrations occurred in the Pacific in prehistoric times. Long-distance trade developed all along the coast from Mozambique to Japan, trade, and therefore knowledge, extended to the Indonesian islands but apparently not Australia. By at least 878 when there was a significant Islamic settlement in Canton much of trade was controlled by Arabs or Muslims. In 219 BC Xu Fu sailed out into the Pacific searching for the elixir of immortality, from 1404 to 1433 Zheng He led expeditions into the Indian Ocean. The east side of the ocean was discovered by Spanish explorer Vasco Núñez de Balboa in 1513 after his expedition crossed the Isthmus of Panama and he named it Mar del Sur because the ocean was to the south of the coast of the isthmus where he first observed the Pacific. Later, Portuguese explorer Ferdinand Magellan sailed the Pacific East to West on a Castilian expedition of world circumnavigation starting in 1519, Magellan called the ocean Pacífico because, after sailing through the stormy seas off Cape Horn, the expedition found calm waters. The ocean was often called the Sea of Magellan in his honor until the eighteenth century, sailing around and east of the Moluccas, between 1525 and 1527, Portuguese expeditions discovered the Caroline Islands, the Aru Islands, and Papua New Guinea. In 1542–43 the Portuguese also reached Japan, in 1564, five Spanish ships consisting of 379 explorers crossed the ocean from Mexico led by Miguel López de Legazpi and sailed to the Philippines and Mariana Islands. The Manila galleons operated for two and a half centuries linking Manila and Acapulco, in one of the longest trade routes in history, Spanish expeditions also discovered Tuvalu, the Marquesas, the Cook Islands, the Solomon Islands, and the Admiralty Islands in the South Pacific. In the 16th and 17th century Spain considered the Pacific Ocean a Mare clausum—a sea closed to other naval powers, as the only known entrance from the Atlantic the Strait of Magellan was at times patrolled by fleets sent to prevent entrance of non-Spanish ships. On the western end of the Pacific Ocean the Dutch threatened the Spanish Philippines, Spain also sent expeditions to the Pacific Northwest reaching Vancouver Island in southern Canada, and Alaska. The French explored and settled Polynesia, and the British made three voyages with James Cook to the South Pacific and Australia, Hawaii, and the North American Pacific Northwest, one of the earliest voyages of scientific exploration was organized by Spain in the Malaspina Expedition of 1789–1794. It sailed vast areas of the Pacific, from Cape Horn to Alaska, Guam and the Philippines, New Zealand, Australia, and the South Pacific. Growing imperialism during the 19th century resulted in the occupation of much of Oceania by other European powers, and later, Japan, in Oceania, France got a leading position as imperial power after making Tahiti and New Caledonia protectorates in 1842 and 1853 respectively. After navy visits to Easter Island in 1875 and 1887, Chilean navy officer Policarpo Toro managed to negotiate an incorporation of the island into Chile with native Rapanui in 1888, by occupying Easter Island, Chile joined the imperial nations
21.
Structure
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Structure is an arrangement and organization of interrelated elements in a material object or system, or the object or system so organized. Material structures include man-made objects such as buildings and machines and natural objects such as biological organisms, abstract structures include data structures in computer science and musical form. Types of structure include a hierarchy, a network featuring many-to-many links, buildings, aircraft, skeletons, anthills, beaver dams and salt domes are all examples of load-bearing structures. The results of construction are divided into buildings and non-building structures, the effects of loads on physical structures are determined through structural analysis, which is one of the tasks of structural engineering. The structural elements can be classified as one-dimensional, two-dimensional, or three-dimensional, the latter was the main option available to early structures such as Chichen Itza. Two-dimensional elements with a third dimension have little of either. The structure elements are combined in structural systems, the majority of everyday load-bearing structures are section-active structures like frames, which are primarily composed of one-dimensional structures. In biology, structures exist at all levels of organization, ranging hierarchically from the atomic and molecular to the cellular, tissue, organ, organismic, population, usually, a higher-level structure is composed of multiple copies of a lower-level structure. Structural biology is concerned with the structure of macromolecules, particularly proteins. The function of molecules is determined by their shape as well as their composition. Protein structure has a four-level hierarchy, the primary structure is the sequence of amino acids that make it up. It has a backbone made up of a repeated sequence of a nitrogen. The secondary structure consists of repeated patterns determined by hydrogen bonding, the two basic types are the α-helix and the β-pleated sheet. The tertiary structure is a back and forth bending of the chain. Chemical structure refers to both molecular geometry and electronic structure, the structure can be represented by a variety of diagrams called structural formulas. Lewis structures use a dot notation to represent the valence electrons for an atom, bonds between atoms can be represented by lines with one line for each pair of electrons that is shared. In a simplified version of such a diagram, called a skeletal formula, only carbon-carbon bonds, atoms in a crystal have a structure that involves repetition of a basic unit called a unit cell. The atoms can be modeled as points on a lattice, and one can explore the effect of symmetry operations that include rotations about a point, reflections about a symmetry planes, and translations
22.
San Francisco Peninsula
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The San Francisco Peninsula is a peninsula in the San Francisco Bay Area that separates San Francisco Bay from the Pacific Ocean. On its northern tip is the City and County of San Francisco and its southern base is in northern Santa Clara County, including the cities of Palo Alto, Mountain View and Los Altos. Whereas the term peninsula technically refers to the entire geographical San Franciscan Peninsula, in local jargon, in 1795, Governor Diego de Borica gave José Darío Argüello a Spanish land grant known as Rancho de las Pulgas. This rancho was the largest grant on the peninsula consisting of 35,260 acres, as a local geographic term, the area referred to as The Peninsula is disjoint from that denoted by The City, and refers to the portion south of San Francisco. A substantial portion of Silicon Valley is located on the peninsula, in Silicon Valley sits some of the largest tech companies in the world with the likes of Google, Yahoo, Facebook and Apple. Over the last decade or so there has been an influx of immigration into the Bay Area from places like India, there are well over 6,600 tech startups in the Valley and new ones are created every day. The east side of the peninsula is a densely populated. It forms an area between San Francisco to the north and San Jose to the south. The Caltrain commuter rail line runs parallel to the El Camino Real. The bridges in the Peninsula include the Dumbarton Bridge, the San Francisco - Oakland Bay Bridge, the San Mateo-Hayward Bridge and the Golden Gate Bridge. Along the center line of the Peninsula is the half of the Santa Cruz Mountains. In the middle of the Peninsula along the fault is the Crystal Springs Reservoir, just north of the Crystal Springs reservoir is San Andreas Lake after which the famous geologic fault was originally named. The San Francisco Peninsula contains a variety of habitats including estuarine, marine, oak woodland, redwood forest, coastal scrub and oak savanna. The county is home to endangered species including the San Francisco garter snake, the Mission blue butterfly. The endangered California clapper rail is found on the shores of San Francisco Bay, in the cities of Belmont
23.
Wonders of the World
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Various lists of the Wonders of the World have been compiled from antiquity to the present day, to catalogue the worlds most spectacular natural wonders and manmade structures. The number seven was chosen because the Greeks believed it represented perfection and plenty, many similar lists have been made. The historian Herodotus, and the scholar Callimachus of Cyrene at the Museum of Alexandria and their writings have not survived, except as references. Brewers Dictionary of Phrase and Fable refers to them as later list suggesting the lists were created after the Middle Ages, many of the structures on these lists were built much earlier than the Medieval Ages, but were well known. Some of the most notable lists are presented below, good Morning America announced one wonder per day over a period of a week. An eighth wonder was chosen on November 24,2006 from viewer feedback, similar to the other lists of wonders, there is no consensus on a list of seven natural wonders of the world, and there has been debate over how large the list should be. Twenty-one finalists were announced January 1,2006, in response, Giza was named an honorary Candidate. Iguazu Falls Halong Bay Jeju Island Puerto Princesa Underground River Table Mountain Komodo Island Amazon Rainforest New7Wonders Cities is the global vote organized by New7Wonders. In 1989 CEDAM brought together a panel of scientists, including Dr. Eugenie Clark. In 2003, the BBC aired a seven-part docudrama exploring the same feats, travel writer Howard Hillman published two books on the subject, one with 10 man-made wonders, and one with 10 natural wonders. British biographer, science writer, and novelist Ronald W. Clark published a book of man-made and natural wonders titled Wonders of the World, in a 1999 article, Astronomy magazine listed the Seven Wonders of the Solar System. This article was made into a video. In Civilization V, natural wonders such as Mount Fuji and Old Faithful were added, similar mechanics of wonders are found in another video game series, Rise of Nations. Board games following the Civilization mould have also allowed players to build a number of wonders from the ancient and these games include Through the Ages, A Story of Civilization and Patchistory, as well as the official Civilization board games
24.
American Society of Civil Engineers
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The American Society of Civil Engineers is a tax-exempt professional body founded in 1852 to represent members of the civil engineering profession worldwide. Headquartered in Reston, Virginia, it is the oldest national engineering society in the United States and it was the first national engineering society created in the United States. In 1999, the ASCE elected the top-ten civil engineering achievements that had the greatest positive impact on life in the 20th century in broad categories. Monuments of the Millennium were a combination of technical engineering achievement, courage and inspiration, and it also publishes conference proceedings, standards, manuals of practice, technical reports, and monographs. The ASCE corporate website hosts the society’s bookstore, the access to all journal articles published since 1983, all conference proceedings since 2000. Each year, more than 55,000 engineers earn continuing education units and/or professional development hours by participating in ASCE’s continuing education programs, ASCE hosts more than 15 annual and specialty conferences, over 200 continuing education seminars and more than 300 live Web seminars. The Societys Committee on Technical Advancement has 10 divisions, each year, more than 6,000 civil engineering professionals contribute volunteer technical expertise through participation on ASCE technical committees. These committees are housed in the divisions of the Committee on Technical Activities or in the Society’s institutes, the efforts of these volunteers advance the profession in many ways including the numerous conferences held each year, manuals of practice, journals and standards. Certification is the recognition of attaining advanced knowledge and skills in a specialty area of civil engineering, ASCE offers certifications for engineers who demonstrate advanced knowledge and skills in their area of engineering. American Academy of Water Resources Engineers Academy of Geo-Professionals Academy of Coastal, Ocean, michel Award for Industry Advancement of Research and the Charles Pankow Award for innovation,11 scholarships and fellowships for student members. Special consideration is given to private practice engineering work that is recognized as a contribution to the field of environmental engineering. The Lifetime Achievement Award has been presented annually since 1999 and recognizes five different individual leaders, one award is present in each category of design, construction, government, education, and management. ASCE designates national and international Historic Civil Engineering Landmarks, on February 12,2007 Lt. Gen Strock gave all expert review panel members an Outstanding Civilian Service Medals. On June 1,2007, the ASCE issued its expert review panel report, the report stated that had levees and pump stations not failed, far less property loss would have occurred and nearly two-thirds of deaths could have been avoided. The ASCE administration was criticized by the Times-Picayune for an attempt to minimize, the Corps acknowledged receiving a copy of the letter and refused to comment until the ASCEs Committee on Professional Conduct had commented on the complaint. It took over a year for the ASCE to announce the results of the CPC, the ASCE self-study panel did not file charges of ethical misconduct and blamed errors on staff and not review panel members having created the June press release. On November 14,2007, ASCE announced that U. S, congressman Sherwood Boehlert, R‑N. Y. would lead an independent task force of outside experts to review how ASCE participated in engineering studies of national significance. ASCE President David Mongan said the review was to address criticism of ASCE´s role in assisting the Army Corps of Engineers-sponsored investigation of Katrina failures
25.
Frommer's
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Frommers is a travel guidebook series created by Arthur Frommer. Frommers has expanded to more than 350 guidebooks across 14 series. In 2007, Frommers celebrated its 50th anniversary of guidebook publishing, since May 2007, Arthur Frommer has been actively blogging about travel on the Frommers. com website. In 1957, Arthur Frommer, a corporal in the U. S. Army, wrote a travel guide for American GIs in Europe. The book ranked popular landmarks and sights in order of importance and it was the first travel guide to show Americans that they could afford to travel in Europe. Arthur Frommer returned to the United States and began practicing law, during that time, he continued to write and also began to self-publish guidebooks to additional destinations, including New York, Mexico, Hawaii, Japan and the Caribbean. In 1977, Frommer’s trademark was sold to Simon & Schuster, Inc. Pearson bought the division of Simon & Schuster in 1998. John Wiley & Sons acquired IDG Books in 2001, arthur’s daughter, Pauline Frommer, is now writing her own series of travel guidebooks and continuing the Frommer’s travel legacy. On August 13,2012, it was announced that Google will be acquiring Frommers for a sum of money. On March 2013, it was reported that Google ended the manufacturing of Frommers guidebooks, on April 2013, it was announced that the Frommers brand has been reacquired by Arthur Frommer and his daughter Pauline Frommer. He scheduled October that year to release the next batch of guidebooks, as of July 2013, Arthur Frommer struck a deal with Publishers Group West to distribute and promote Frommers books. More than 75 million books have sold since Frommer’s inception in 1957. Jamie later gets a job with Frommers at the end of EuroTrip, in the opening scene of 2003s Charlies Angels, Full Throttle, Cameron Diaz enters a Mongolian beer shack holding a Frommers guidebook. A copy can also be seen near the beginning of the 2008 film Jumper, complete references from the Frommers Guide book for Traveling around the world can be seen in the movie Last Stop for Paul. Notes Frommers. com – official site Frommers. com/Podcast – travel podcasts
26.
Fort Point, San Francisco
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Fort Point is a masonry seacoast fortification located at the southern side of the Golden Gate at the entrance to San Francisco Bay. This fort was completed just before the American Civil War by the United States Army, the fort is now protected as Fort Point National Historic Site, a United States National Historic Site administered by the National Park Service as a unit of the Golden Gate National Recreation Area. In 1769 Spain occupied the San Francisco area and by 1776 had established the areas first European settlement, with a mission and a presidio. To protect against encroachment by the British and Russians, Spain fortified the high white cliff at the narrowest part of the bays entrance, the Castillo de San Joaquin, built in 1794, was an adobe structure housing nine to thirteen cannons. Mexico won independence from Spain in 1821, gaining control of the region and the fort, following the United States victory in 1848, California was annexed by the U. S. and became a state in 1850. The gold rush of 1849 had caused rapid settlement of the area, military officials soon recommended a series of fortifications to secure San Francisco Bay. Coastal defenses were built at Alcatraz Island, Fort Mason, the U. S. Army Corps of Engineers began work on Fort Point in 1853. Plans specified that the lowest tier of artillery be as close as possible to water level so cannonballs could ricochet across the surface to hit enemy ships at the water-line. Workers blasted the 90-foot cliff down to 15 feet above sea level, the structure featured seven-foot-thick walls and multi-tiered casemated construction typical of Third System forts. It was sited to defend the maximum amount of harbor area, while there were more than 30 such forts on the East Coast, Fort Point was the only one on the West Coast. In 1854 Inspector General Joseph K. Mansfield declared this point as the key to the whole Pacific Coast. a crew of 200, many unemployed miners, labored for eight years on the fort. In 1861, with war looming, the army mounted the forts first cannon, colonel Albert Sidney Johnston, commander of the Department of the Pacific, prepared Bay Area defenses and ordered in the first troops to the fort. Kentucky-born Johnston then resigned his commission to join the Confederate Army, throughout the Civil War, artillerymen at Fort Point stood guard for an enemy that never came. Troops soon moved out of Fort Point, and it was never again occupied by the army. The fort was important enough to receive protection from the elements. In 1869 a granite seawall was completed, the following year, some of the forts cannon were moved to Battery East on the bluffs nearby, where they were more protected. In 1882 Fort Point was officially named Fort Winfield Scott after the hero from the war against Mexico. The name never caught on and was applied to an artillery post at the Presidio
27.
Southern Pacific Transportation Company
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The Southern Pacific Transportation Company, earlier Southern Pacific Railroad and Southern Pacific Company, and usually called the Southern Pacific or Espee, was an American Class I railroad. It was absorbed in 1988 by the company controlled the Denver and Rio Grande Western Railroad. The railroad was founded as a holding company in 1865. By 1900 the Southern Pacific Company was a railroad system incorporating many smaller companies, such as the Texas and New Orleans Railroad and Morgans Louisiana. It extended from New Orleans through Texas to El Paso, across New Mexico and through Tucson, to Los Angeles, through most of California, including San Francisco, Central Pacific lines extended east across Nevada to Ogden, Utah, and reached north through Oregon to Portland. By the 1980s route mileage had dropped to 10,423 miles, in 1988 the Southern Pacific was taken over by D&RGW parent Rio Grande Industries. The combined railroad kept the Southern Pacific name due to its recognition in the railroad industry. Along with the addition of the SPCSL Corporation route from Chicago to St. Louis, by 1996 years of financial problems had dropped SPs mileage to 13,715 miles, and it was taken over by the Union Pacific Railroad. Southern Pacific founded important hospitals in San Francisco, Tucson, in the 1970s, it also founded a telecommunications network with a state-of-the-art microwave and fiber optic backbone. This evolved into Sprint, a company name that came from the acronym for Southern Pacific Railroad Internal Networking Telephony. The original aim was to construct a railroad from Galveston Bay to a point on the Red River near a trading post known as Coffees Station, the GRR built 2 miles of track in Houston in 1855. Track laying began in earnest in 1856 and on 1 September 1856 GRR was renamed the Houston and Texas Central Railway. SP acquired H&TC in 1883 but it continued to operate as a subsidiary under its own management until 1927, when it was leased to another SP-owned railroad, the Texas and New Orleans Railroad. The Buffalo Bayou, Brazos and Colorado Railway, was chartered in Texas on 11 February 1850 by a group that included General Sidney Sherman, bBB&C was the first railroad to commence operation in Texas and the first component of SP to commence operation. Surveying of the route alignment commenced at Harrisburg, Texas in 1851, the first 20 miles of track opened in August 1853. SP was founded in San Francisco, California in 1865 by a group of businessmen led by Timothy Phelps with the aim of building a connection between San Francisco and San Diego, California. The company was purchased in September 1868 by a group of known as the Big Four, Charles Crocker, Leland Stanford, Mark Hopkins. The Big Four had, in 1861, created the Central Pacific Railroad, CPRR was merged into SP in 1870
28.
Hyde Street Pier
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The Hyde Street Pier, at 2905 Hyde Street, is a historic ferry pier located on the northern waterfront of San Francisco, California, amidst the tourist zone of Fishermans Wharf. It was designated part of U. S. Route 101, the ferries began operation by the Golden Gate Ferry Company. Today, the pier is part of the San Francisco Maritime National Historical Park, various historical ships are anchored to the pier, some available for self-guided or docent-led tours. Among the ships on display or in storage are the Balclutha, thayer, Eureka, Alma, Hercules, Eppleton Hall, and over one hundred smaller craft. Photo of the Hyde Street Pier in the 1930s
29.
Sausalito, California
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Sausalito is a San Francisco Bay Area city in Marin County, California. Sausalito is 8 miles south-southeast of San Rafael, at an elevation of 13 feet, the population was 7,061 as of the 2010 census. The community is situated near the end of the Golden Gate Bridge, and prior to the building of that bridge served as a terminus for rail, car. It is adjacent to, and largely bounded by, the spaces of the Golden Gate National Recreation Area. It is sometimes claimed that Sausalito was named for the district in Valparaíso, Murrieta was the leader of bandits who settled at the northern end of the future Golden Gate bridge after being banned from San Francisco in the bandit wars. However, this theory cannot be true because Murrieta was from Mexico, not Chile, the Rancho Saucelito had already been granted to William Richardson in 1838. Located at 37°51′33″N 122°29′07″W, Sausalito encompasses both steep, wooded hillside and shoreline tidal flats, according to the United States Census Bureau, the city has a total area of 2.2 square miles. Notably, only 1.8 square miles of it is land, a full 21. 54% of the city is under water, and has been so since its founding in 1868. Prominent geographic features associated with Sausalito include Richardson Bay and Pine Point, when Sausalito was formally platted, it was anticipated that future development might extend the shoreline with landfill, as had been the practice in neighboring San Francisco. As a result, entire streets, demarcated and given names like Pescadero, Eureka and Teutonia, the legal, if not actual, presence of these streets has proved a contentious factor in public policy, because some houseboats float directly above them. The California State Lands Commission is reportedly pursuing a compromise which would not the houseboats. Sausalito has a Mediterranean climate with far lower temperatures than expected because of its adjacency to San Francisco Bay, Sausalito was once the site of a Coast Miwok settlement known as Liwanelowa. The branch of the Coast Miwok living in this area were known as the Huimen, early explorers of the area described them as friendly and hospitable. Such placidity was likely a factor to their complete displacement. As historian Jack Tracy has observed, Their dwellings on the site of Sausalito were explored and mapped in 1907, nearly a century, by that time, nothing was left of the culture of those who had first enjoyed the natural treasures of the bay. The life of the Coastal Miwoks had been reduced to archaeological remnants, the first European known to visit the present-day location of Sausalito was Don José de Cañizares, on August 5,1775. Cañizares was head of a party dispatched by longboat from the ship San Carlos. The crew of the San Carlos came ashore soon after, reporting friendly natives and teeming populations of deer, elk, bear, sea lions, seals and otters
30.
San Francisco Ferry Building
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The San Francisco Ferry Building is a terminal for ferries that travel across the San Francisco Bay, a food hall and an office building. It is located on The Embarcadero in San Francisco, California, on top of the building is a 245-foot tall clock tower with four clock dials, each 22 feet in diameter, which can be seen from Market Street, a main thoroughfare of the city. Designed in 1892 by American architect A, Page Brown in the Beaux Arts style, the ferry building was completed in 1898. At its opening, it was the largest project undertaken in the city up to that time, Brown designed the clock tower after the 12th-century Giralda bell tower in Seville, Spain, and the entire length of the building on both frontages is based on an arched arcade. With decreased use since the 1950s, after bridges were constructed across the bay to carry passenger traffic, in 2002, a restoration and renovation were undertaken to redevelop the entire complex. The 660-foot long Great Nave was restored, together with its height, a marketplace was created on the ground floor, the former baggage handling area. The second and third floors were adapted for office and Port Commission use, during daylight, on every full and half-hour, the clock bell chimes portions of the Westminster Quarters. The ferry terminal is a designated San Francisco landmark and is listed on the National Register of Historic Places, the present structure was designed in 1892 by A. Page Brown, a New York architect who had started with McKim, Mead & White, influenced by studies at the École des Beaux-Arts in Paris, he designed the clock tower after the 12th-century Giralda bell tower in Seville, Spain. Brown designed it to satisfy needs of a society in high style associated with traditional buildings. The highest quality materials were used, such as marble and mosaics for the state seal, the 660-foot-long Great Nave on the second floor was the major public space for arriving and departing ferry passengers. Opened in 1898, the building replaced a wooden predecessor, the well-built reinforced building with its arched arcades survived both the 1906 and the 1989 earthquakes with little damage. It served as the destination for commuters to San Francisco from the East Bay, who rode the ferry fleets of the Southern Pacific, in the afternoon, they caught ferries returning across the bay. A loop track in front of the building enabled convenient transfers to streetcars, a large pedestrian bridge spanned the Embarcadero in front of the Ferry building to facilitate safe crossing of the busy plaza and transit hub. In the 1940s, this bridge was deconstructed to supply scrap metal for the Second World War. Until the completion of the Bay Bridge and Golden Gate Bridge in the 1930s, after the bridges opened, and the new Key System trains began running to the East Bay from the Transbay Terminal in 1939, passenger ferry use fell sharply. The formerly grand public space was reduced to a narrow and dark corridor, passengers were made to wait for ferries on outdoor benches, and the ticketing booths were moved to the pier. With the construction in the late 1950s of the Embarcadero Freeway, pedestrian access was treated as an afterthought, and the public was cut off from the waterfront
31.
San Francisco Bulletin
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The San Francisco Call was a newspaper that served San Francisco, California. Between December 1856 and March 1895 The San Francisco Call was named The Morning Call, in the period from 1863 to 1864 Mark Twain worked as one of the papers writers. In December of that year, Hearst merged The San Francisco Call with the Evening Post, on 29 August 1929, the newspaper name was changed again to the San Francisco Call-Bulletin, when the San Francisco Call & Post merged with the San Francisco Bulletin. In 1959 the San Francisco Call-Bulletin merged with Scripps-Howards San Francisco News becoming the News-Call Bulletin, in 1965 the paper merged with the San Francisco Examiner. San Francisco, CA, at the Library of Congress Chronicling America Project, Images provided by, University of California, Riverside, Riverside, CA Browse Issues by Calendar, The Morning Call. San Francisco, CA, at the Library of Congress Chronicling America Project, Images provided by, University of California, Riverside, Riverside, CA
32.
Thesis
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A thesis or dissertation is a document submitted in support of candidature for an academic degree or professional qualification presenting the authors research and findings. In some contexts, the thesis or a cognate is used for part of a bachelors or masters course, while dissertation is normally applied to a doctorate, while in other contexts. The term graduate thesis is used to refer to both masters theses and doctoral dissertations. The required complexity or quality of research of a thesis or dissertation can vary by country, university, or program, the word dissertation can at times be used to describe a treatise without relation to obtaining an academic degree. The term thesis is used to refer to the general claim of an essay or similar work. The term thesis comes from the Greek θέσις, meaning something put forth, Dissertation comes from the Latin dissertātiō, meaning path. A thesis may be arranged as a thesis by publication or a monograph, with or without appended papers, an ordinary monograph has a title page, an abstract, a table of contents, comprising the various chapters, and a bibliography or a references section. They differ in their structure in accordance with the different areas of study. In a thesis by publication, the chapters constitute an introductory, Dissertations normally report on a research project or study, or an extended analysis of a topic. The structure of the thesis or dissertation explains the purpose, the research literature which impinges on the topic of the study, the methods used. Degree-awarding institutions often define their own style that candidates have to follow when preparing a thesis document. Other applicable international standards include ISO2145 on section numbers, ISO690 on bibliographic references, some older house styles specify that front matter uses a separate page-number sequence from the main text, using Roman numerals. They therefore avoid the traditional separate number sequence for front matter, however, strict standards are not always required. Most Italian universities, for example, have only general requirements on the size and the page formatting. A thesis or dissertation committee is a committee that supervises a students dissertation, the committee members are doctors in their field and have the task of reading the dissertation, making suggestions for changes and improvements, and sitting in on the defense. Sometimes, at least one member of the committee must be a professor in a department that is different from that of the student, all the dissertation referees must already have achieved at least the academic degree that the candidate is trying to reach. At English-speaking Canadian universities, writings presented in fulfillment of undergraduate coursework requirements are normally called papers, a longer paper or essay presented for completion of a 4-year bachelors degree is sometimes called a major paper. High-quality research papers presented as the study of a postgraduate consecutive bachelor with Honours or Baccalaureatus Cum Honore degree are called thesis
33.
Bering Strait crossing
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The bridge or tunnel would provide a connection linking North America with Asia, Africa and Europe. With the two Diomede Islands between the peninsulas, the Bering Strait could be spanned by a bridge and a tunnel, there might be one long bridge, almost 40 km long, connecting Alaska and the Diomede Islands, and a tunnel connecting the Diomede Islands and Russia. The earth bored from the tunnel could be used as landfill to connect the two islands, however, the construction of a Bering Strait crossing would face exceptional political, engineering, and financial hurdles. There have been proposals for a Bering Strait crossing made by various individuals, television channels, magazines. The names used for them include The Intercontinental Peace Bridge and Eurasia-America Transport Link, Tunnel names have included TKM-World Link and AmerAsian Peace Tunnel. In April 2007, Russian government officials told the press that the Russian government will back a $65 billion plan by a consortium of companies to build a Bering Strait tunnel. In August 2011, the Daily Mail reported that the Russian government had approved a £60 billion tunnel across the Bering Strait, the £60 billion comes from a rough Russian estimate of US$100 billion. The concept of an overland connection crossing the Bering Strait goes back before the 20th century, william Gilpin, first governor of the Colorado Territory, envisioned a vast Cosmopolitan Railway in 1890 linking the entire world through a series of railways. The project was presented to the government of the Russian Empire, the proposal was for a 90-year lease, and exclusive mineral rights for 8 miles each side of the right-of-way. It was debated by officials and finally turned down on March 20,1907, czar Nicholas II approved a tunnel in 1905. Its cost was estimated at $65 million and $300 million including all the railroads and these hopes were dashed with the outbreak of World War I and the Russian Revolution. Interest was renewed during World War II with the completion in 1942-43 of the Alaska Highway linking the remote territory of Alaska with Canada and the continental United States. Lin suggested the construction of a bridge across the Bering Strait to foster commerce, ten years later he organized the Inter-Continental Peace Bridge, Inc. a non-profit institution organized to further this proposal. At that time he made a feasibility study of a Bering Strait bridge, in 1994 he updated the cost to more than $4 billion. Like Gilpin, Lin envisioned the project as a symbol of cooperation and unity. On February 10,2009, Sun Myung Moons Foundation for Peace, the winner, was a project entitled Diomede Archipelago. It proposes a series of islands that form two archipelagos extending the two continents, and three tunnels connecting the two Diomede islands and the archipelagos. The project would include a tunnel under the Bering Strait and connect to the contiguous United States via Canada, the depth of the water is little problem, as the strait is no deeper than 55 meters
34.
Bering Strait
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The Bering Strait is a strait of the Pacific, which borders with the Arctic to north. It is located between Russia and the United States, named after Vitus Bering, a Danish-born explorer in the service of the Russian Empire, it lies slightly south of the Arctic Circle being at about 65°40 N latitude. The present Russia-US east-west boundary is at 168°5837 W and this view of how Paleo-Indians entered America has been the dominant one for several decades and continues to be the most accepted one. Numerous successful crossings without the use of a boat have also recorded since at least the early 20th century. As of 2012, the Russian coast of the Bering Strait has been a military zone. Through organized trips and the use of permits, it is possible for foreigners to visit. All arrivals must be through an airport or a cruise port, unauthorized travelers who arrive on shore after crossing the strait, even those with visas, may be arrested, imprisoned briefly, fined, deported and banned from future visas. Its depth varies between 30 metres and 50 metres and it borders with the Chukchi Sea to north and with the Bering Sea to south. The eastern coast belongs to the U. S. state of Alaska, notable towns that straddle the Strait include Nome and the small settlement of Teller. The western coast belongs to the Chukotka Autonomous Okrug, a Federal subject of Russia, major towns that lie along the Strait include Lorino and Lavrentiya. The Diomede Islands lie midway in the Strait, the village in Little Diomede has a school which belongs to Alaskas Bering Strait School District. The earliest reference of the strait were from maps from the Polo family, from at least 1562, European geographers thought that there was a Strait of Anián between Asia and North America. In 1648, Semyon Dezhnyov probably passed through the strait, Danish-born Russian navigator Vitus Bering entered it in 1728. In 1732, Mikhail Gvozdev crossed it for the first time, adolf Erik Nordenskiöld in 1878–79 sailed along the northern coast of Siberia, thereby proving that there was no northern land bridge from Asia to North America. In March 1913, Captain Max Gottschalk crossed from the east cape of Siberia to Shishmaref, Alaska, on dogsled via Little and he was the first documented modern voyager to cross from Russia to North America without the use of a boat. In 1987, swimmer Lynne Cox swam a 4. 3-kilometre course between the Diomede Islands from Alaska to the Soviet Union in 3.3 °C water during the last years of the Cold War. In June and July 1989, a British expedition, Kayaks Across the Bering Strait, completed the first sea kayak crossing of the Bering Strait from Wales, Alaska, to Cape Dezhnev, Siberia. The team of Robert Egelstaff, Trevor Potts, Greg Barton and Pete Clark landed on Little Diomede Island, rested a few days and they were escorted to Moscow from where they flew back to London at the end of July
35.
Moveable bridge
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A moveable bridge, or movable bridge, is a bridge that moves to allow passage for boats or barges. An advantage of making bridges moveable is the lower cost, due to the absence of high piers, the principal disadvantage is that the traffic on the bridge must be halted when it is opened for passages. For seldom-used railroad bridges over busy channels, the bridge may be open and then closed for train passages. For small bridges, bridge movement may be enabled without the need for an engine, some bridges are operated by the users, especially those with a boat, others by a bridgeman, a few remotely using video-cameras and loudspeakers. Generally, the bridges are powered by motors, whether operating winches, gearing. While moveable bridges in their entirety may be long, the length of the moveable portion is restricted by engineering. There are often traffic lights for the road and water traffic, ninety-nine were killed and 100 were injured. Four crewmen, including the engineer and fireman, and 44 passengers died by drowning, september 22,1993 – Mobile, Alabama, US, In heavy fog and low visibility, a disoriented towboat pilot made a wrong turn and entered an un-navigable waterway. The rails kinked but did not break, so no fault was indicated for approaching trains, approximately 8 minutes later, an Amtrak train carrying 220 passengers derailed at the kinked portion of the rails, killing 47 and injuring 103 more. November 23,1996 – Kearny, New Jersey, US, An Amtrak passenger and mail train derailed crossing the Portal Bridge over the Hackensack River. Moveable Bridges in the British Isles NSW moveable bridges
36.
Cantilever bridge
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A cantilever bridge is a bridge built using cantilevers, structures that project horizontally into space, supported on only one end. Engineers in the nineteenth century understood that a bridge that was continuous across multiple supports would distribute the loads among them and this would result in lower stresses in the girder or truss and meant that longer spans could be built. Several nineteenth century engineers patented continuous bridges with hinge points mid-span, the use of a hinge in the multi-span system presented the advantages of a statically determinate system and of a bridge that could handle differential settlement of the foundations. Engineers could more easily calculate the forces and stresses with a hinge in the girder, heinrich Gerber was one of the engineers to obtain a patent for a hinged girder and is recognized as the first to build one. The Hassfurt Bridge over the Main river in Germany with a span of 124 feet was completed in 1867 and is recognized as the first modern cantilever bridge. The High Bridge of Kentucky by C, the Kentucky River Bridge spanned a gorge that was 275 feet deep and took full advantage of the fact that falsework, or temporary support, is not needed for the main span of a cantilever bridge. The most famous early cantilever bridge is the Forth Bridge and this bridge held the record for longest span in the world for seventeen years, until it was surpassed by the Quebec Bridge. Benjamin Baker illustrated the principles of the suspended span cantilever in the photo on the left. The suspended span, where Kaichi Watanabe sits, is seen in the center, the need to resist compression of the lower chord is seen in the use of wooden poles while the tension of the upper chord is shown by the outstretched arms. The action of the foundations as anchors for the cantilever is visible in the placement of the counterweights. A simple cantilever span is formed by two arms extending from opposite sides of an obstacle to be crossed, meeting at the center. In a common variant, the span, the cantilever arms do not meet in the center, instead. The suspended span may be built off-site and lifted into place, thus, in a bridge built on two foundation piers, there are four cantilever arms, two which span the obstacle, and two anchor arms which extend away from the obstacle. Because of the need for strength at the balanced cantilevers supports. The Commodore Barry Bridge is an example of type of cantilever bridge. Steel truss cantilevers support loads by tension of the upper members, commonly, the structure distributes the tension via the anchor arms to the outermost supports, while the compression is carried to the foundations beneath the central towers. Many truss cantilever bridges use pinned joints and are statically determinate with no members carrying mixed loads. Prestressed concrete balanced cantilever bridges are built using segmental construction
37.
Metallurgy
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The production of metals involves the processing of ores to extract the metal they contain, and the mixture of metals, sometimes with other elements, to produce alloys. Metallurgy is distinguished from the craft of metalworking, although metalworking relies on metallurgy, as medicine relies on medical science, Metallurgy is subdivided into ferrous metallurgy and non-ferrous metallurgy or colored metallurgy. Ferrous metallurgy involves processes and alloys based on iron while non-ferrous metallurgy involves processes, the production of ferrous metals accounts for 95 percent of world metal production. The roots of metallurgy derive from Ancient Greek, μεταλλουργός, metallourgós, worker in metal, from μέταλλον, métallon, metal + ἔργον, érgon, in the late 19th century it was extended to the more general scientific study of metals, alloys, and related processes. In English, the pronunciation is the more common one in the UK. The /ˈmetələrdʒi/ pronunciation is the common one in the USA. The earliest recorded metal employed by humans appears to be gold, small amounts of natural gold have been found in Spanish caves used during the late Paleolithic period, c.40,000 BC. Silver, copper, tin and meteoric iron can also be found in native form, egyptian weapons made from meteoric iron in about 3000 BC were highly prized as daggers from heaven. Certain metals, notably tin, lead and copper, can be recovered from their ores by simply heating the rocks in a fire or blast furnace, a process known as smelting. The first evidence of this extractive metallurgy dates from the 5th and 6th millennia BC and was found in the sites of Majdanpek, Yarmovac and Plocnik. To date, the earliest evidence of copper smelting is found at the Belovode site, other signs of early metals are found from the third millennium BC in places like Palmela, Los Millares, and Stonehenge. However, the ultimate beginnings cannot be ascertained and new discoveries are both continuous and ongoing. These first metals were single ones or as found, about 3500 BC, it was discovered that by combining copper and tin, a superior metal could be made, an alloy called bronze, representing a major technological shift known as the Bronze Age. The extraction of iron from its ore into a metal is much more difficult than for copper or tin. The process appears to have been invented by the Hittites in about 1200 BC, the secret of extracting and working iron was a key factor in the success of the Philistines. Historical developments in ferrous metallurgy can be found in a variety of past cultures. A 16th century book by Georg Agricola called De re metallica describes the highly developed and complex processes of mining metal ores, metal extraction, Agricola has been described as the father of metallurgy. Extractive metallurgy is the practice of removing valuable metals from an ore, in order to convert a metal oxide or sulphide to a purer metal, the ore must be reduced physically, chemically, or electrolytically
38.
United States Department of War
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The Secretary of War, a civilian with such responsibilities as finance and purchases and a minor role in directing military affairs, headed the War Department throughout its existence. Retired senior General Henry Knox, then in civilian life, served as the first United States Secretary of War, forming and organizing the department and the army fell to Secretary Knox. On November 8,1800 the War Department building with its records, foundation of the new military academy at West Point along the Hudson River upstream from New York City in 1802 was important to the future growth of the American army. The multiple failures and fiascos of the War of 1812 convinced Washington that thorough reform of the War Department was necessary, winfield Scott became the senior general until the start of the American Civil War in 1861. The bureau chiefs acted as advisers to the Secretary of War while commanding their own troops, the bureaus frequently conflicted among themselves, but in disputes with the commanding general, the Secretary of War generally supported the bureaus. Congress regulated the affairs of the bureaus in detail, and their chiefs looked to that body for support, during the American Civil War, the War Department responsibilities expanded. It handled the recruiting, training, supply, medical care, transportation, a separate command structure took charge of military operations. In the late stages of the war, the Department took charge of refugees and freedmen in the American South through the Bureau of Refugees, Freedmen, during Reconstruction, this bureau played a major role in supporting the new Republican governments in the southern states. When military Reconstruction ended in 1877, the U. S. Army removed the last troops from military occupation of the American South, and the last Republican state governments in the region ended. The Army comprised hundreds of small detachments in forts around the West, dealing with Indians, the United States Army, with 39,000 men in 1890 was the smallest and least powerful army of any major power in the late 19th century. By contrast, France had an army of 542,000, temporary volunteers and state militia units mostly fought the Spanish–American War of 1898. This conflict demonstrated the need for effective control over the department. Elihu Root enlarged the United States Military Academy at West Point, New York and established the United States Army War College and he changed the procedures for promotions and organized schools for the special branches of the service. He also devised the principle of rotating officers from staff to line, indeed, Secretary Taft exercised little power, President Theodore Roosevelt made the major decisions. In 1911, Secretary Henry L. Stimson and Major General Leonard Wood, his chief of staff, the general staff assisted them in their efforts to rationalize the organization of the army along modern lines and in supervising the bureaus. Assisted by industrial advisers, they reorganized the system of the army. General March reorganized the general staff along similar lines and gave it authority over departmental operations. After the war, the Congress again granted the bureaus their former independence, in the 1920s, General John J. Pershing realigned the general staff on the pattern of his American Expeditionary Force field headquarters, which he commanded
39.
United States Secretary of War
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The Secretary of War was a member of the United States Presidents Cabinet, beginning with George Washingtons administration. A similar position, called either Secretary at War or Secretary of War, had appointed to serve the Congress of the Confederation under the Articles of Confederation between 1781 and 1789. Benjamin Lincoln and later Henry Knox held the position, when Washington was inaugurated as the first president under the Constitution, he appointed Knox to continue serving. The Secretary of War was the head of the War Department, at first, he was responsible for all military affairs, including naval affairs. In 1798, the Secretary of the Navy was created by statute, from 1886 onward, the Secretary of War was third in the line of succession to the presidency, after the Vice President of the United States and the Secretary of State. The office of Secretary at War was modelled upon Great Britains Secretary at War, the office of Secretary at War was meant replaced both the Commander-in-Chief and the Board of War, and like the President of the Board, the Secretary wore no special insignia. The Inspector General, Quartermaster General, Commissary General, and Adjutant General served on the Secretarys staff, however, the Army itself under Secretary Henry Knox only consisted of 700 men. Parties No party Federalist Democratic-Republican Democratic Whig Republican Confederate States Secretary of War Bell, commanding Generals and Chiefs of Staff 1775-2005, Portraits and Biographical Sketches. United States Army Center of Military History, encyclopedia of the United States Cabinet 1789-2010. Charlottesville, Virginia, The Judge Advocate Generals School, U. S. Army
40.
Automotive industry
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The automotive industry is a wide range of companies and organizations involved in the design, development, manufacturing, marketing, and selling of motor vehicles, some of them are called automakers. It is one of the worlds most important economic sectors by revenue, the term automotive was created from Greek autos, and Latin motivus to represent any form of self-powered vehicle. This term was proposed by Elmer Sperry, the automotive industry began in the 1890s with hundreds of manufacturers that pioneered the horseless carriage. For many decades, the United States led the world in automobile production. In 1929, before the Great Depression, the world had 32,028,500 automobiles in use, at that time the U. S. had one car per 4.87 persons. After World War II, the U. S. produced about 75 percent of auto production. In 1980, the U. S. was overtaken by Japan, in 2006, Japan narrowly passed the U. S. in production and held this rank until 2009, when China took the top spot with 13.8 million units. With 19.3 million units manufactured in 2012, China almost doubled the U. S. production, with 10.3 million units, from 1970 over 1998 to 2012, the number of automobile models in the U. S. has grown exponentially. Safety is a state that implies to be protected from any risk, danger, in the automotive industry, safety means that users, operators or manufacturers do not face any risk or danger coming from the motor vehicle or its spare parts. Safety for the automobiles themselves, implies there is no risk of damage. Safety in the industry is particularly important and therefore highly regulated. Automobiles and other vehicles have to comply with a certain number of norms and regulations, whether local or international. The standard ISO26262, is considered as one of the best practice framework for achieving automotive functional safety. In case of safety issues, danger, product defect or faulty procedure during the manufacturing of the motor vehicle and this procedure is called product recall. Product recalls happen in every industry and can be production-related or stem from the raw material, however, the automotive industry is still particularly concerned about product recalls, which cause considerable financial consequences. Around the world, there were about 806 million cars and light trucks on the road in 2007, consuming over 980 billion litres of gasoline, the automobile is a primary mode of transportation for many developed economies. The Detroit branch of Boston Consulting Group predicts that, by 2014, meanwhile, in the developed countries, the automotive industry has slowed down. It is also expected that this trend will continue, especially as the generations of people no longer want to own a car anymore
41.
California State Legislature
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The California State Legislature is the state legislature of the U. S. state of California. It is a body consisting of the lower house, the California State Assembly, with 80 members, and the upper house. New legislators convene each new session, to organize, in the Assembly and Senate Chambers, respectively. Aside from the recess, the legislature is in session year-round, the Democratic Party currently holds supermajorities in both chambers of the California Legislature. The state senate currently consists of 27 Democrats and 13 Republicans, except for the period from 1995 to 1996, the Assembly has been in Democratic hands since the 1970 election. The Senate has been in Democratic hands continuously since 1970, the first Californian State House was originally a hotel in San Jose owned by businessman Pierre Don Pedro Sainsevain and his associates. The State Legislature currently meets in the California State Capitol in Sacramento, members of the Assembly are elected from 80 districts and serve two-year terms. Members of the Senate are elected from forty districts and serve four-year terms, twenty Senate seats are up for election at each two-year election cycle. Term limits were established in 1990 following the passage of Proposition 140. In June 2012, voters approved Proposition 28 which allows legislators to serve a maximum of 12 years without regard to whether the years are served in the State Assembly or the State Senate. The proceedings of the California State Legislature are briefly summarized in regularly published journals, which show votes, reports produced by California executive agencies, as well as the Legislature, were published in the Appendices to the Journals from 1849 to 1970. Since the 1990s, the legislature has provided a video feed for its sessions. Due to the expense and the obvious political downside, California did not keep records of actual speeches made by members of the Assembly. As a result, reconstructing legislative intent outside of an acts preamble is extremely difficult in California for legislation passed before the 1990s. Since 1993, the Legislature has hosted a web/ftp site in one form or another, the most sought-after legislative committee appointments are to banking, agriculture and insurance. A bill is a proposal to change, repeal, or add to existing state law, an Assembly Bill is one introduced in the Assembly, a Senate Bill, in the Senate. Bills are designated by number, in the order of introduction in each house, for example, AB16 refers to the 16th bill introduced in the Assembly. The numbering starts afresh each session, there may be one or more extraordinary sessions
42.
North Coast (California)
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The North Coast of California is the region in Northern California that lies on the Pacific coast between San Francisco Bay and the Oregon border. It commonly includes Mendocino, Humboldt, and Del Norte counties and sometimes includes two counties from the San Francisco Bay area, Marin and Sonoma. Much of the area is rural, and the city within the region with a population of over 100,000 is Santa Rosa. Despite their size, many of the cities and towns have historical importance to the State and/or regional importance. The coastline is often inaccessible, and includes cliffs and hills, streams. The southern portion of the North Coast is largely urbanized while the rest is mostly rural, the more remote northern areas are often referred to as the being located behind the Redwood Curtain. A segment of the coastline in Mendocino and Humboldt Counties is known as the Lost Coast, notable seaside beaches can be found at Marin Headlands and Point Reyes National Seashore in the south, with innumerable examples of remote or less used beaches north of the San Francisco Bay area. Redwoods are also found in many other State and local parks, other larger redwood parks include Prairie Creek Redwoods State Park, Del Norte Coast Redwoods State Park, Jedediah Smith Redwoods State Park and Redwood National and State Parks. In total, the parks of the North Coast contain the vast majority of all remaining old-growth redwoods. Interstate 580 U. S. Route 101 - Primary north–south route from San Francisco to Crescent City U. S. Route 199 - from U. S
43.
Humboldt County, California
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Humboldt County is a county in the U. S. state of California. As of the 2010 census, the population was 134,623, Humboldt County comprises the Eureka–Arcata–Fortuna, CA Micropolitan Statistical Area. It is located on the far North Coast ~270 miles north of San Francisco, Area cities and towns are known for hundreds of ornate examples of Victorian architecture. Humboldt County is a forested mountainous, and rural county with about 110 miles of coastline situated along the Pacific coast in Northern Californias rugged Coast Ranges. Andrés de Urdaneta found the coast near Cape Mendocino then followed the coast south to Acapulco in 1565, Spanish traders made unintended visits to California with the Manila Galleons on their return trips from the Philippines beginning in 1565. Humboldt County was formed in 1853 from parts of Trinity County, the first recorded entry by people of European origin was a landing by the Spanish in 1775 in Trinidad. The first recorded entry of Humboldt Bay by non-natives was an 1806 visit from a sea otter hunting party from Sitka employed by the Russian American Company, the hunting party included Captain Jonathan Winship, an American, and some Aleut hunters. The bay was not visited again by people of European origin until 1849 when Josiah Greggs party visited, the area around Humboldt Bay was once solely inhabited by the Wiyot Indian tribe. One of the largest Wiyot villages, Tolowot, was located on Indian Island in Humboldt Bay, founded around 900 BC, it contains a shell midden 6 acres in size and 14 feet deep. It was the site of the February 26,1860 massacre of the Wiyot people that was recorded by Bret Harte, then living in Union, between 60 and 200 Wiyot men, women, and children were murdered that night. Tolowot is now a site and a National Historic Landmark. They were put on two steamships and shipped to San Francisco, no-one was killed in the expulsion. Another Chinese expulsion occurred during 1906 in a cannery on the Eel River, however, some Chinese remained in the Orleans area, where some white landowners sheltered and purchased food for the Chinese mineworkers until after racial tension passed. Chinese did not return to the cities until the 1950s. The coastal zone of the county experiences very wet, cool winters and dry, in the winter, temperatures range from highs of 40–59 °F to lows of 32–49 °F. Coastal summers are cool to mild, with highs of 60–69 °F. Coastal summer temperatures range from highs of 64–70 °F to lows of 46–55 °F, in these locations summer highs are 70–75 °F. The coastal zone experiences a number of frosty nights in winter and early spring, though snowfall, coastal winters are cool and wet
US 101 / SR 1 (see below), pedestrians and bicycles.
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