An active electronically scanned array is a type of phased array antenna, a computer-controlled array antenna in which the beam of radio waves can be electronically steered to point in different directions without moving the antenna. In the AESA, each antenna element is connected to a small solid-state transmit/receive module under the control of a computer, which performs the functions of a transmitter and/or receiver for the antenna; this contrasts with a passive electronically scanned array, in which all the antenna elements are connected to a single transmitter and/or receiver through phase shifters under the control of the computer. AESA's main use is in radar, these are known as active phased array radar; the AESA is a more advanced, second-generation of the original PESA phased array technology. PESAs can only emit a single beam of radio waves at a single frequency at a time; the AESA can radiate multiple beams of radio waves at multiple frequencies simultaneously. AESA radars can spread their signal emissions across a wider range of frequencies, which makes them more difficult to detect over background noise, allowing ships and aircraft to radiate powerful radar signals while still remaining stealthy, as well as being more resistant to jamming.
Bell Labs proposed replacing the Nike Zeus radars with a phased array system in 1960, was given the go-ahead for development in June 1961. The result was the Zeus Multi-function Array Radar, an early example of an active electronically steered array radar system. ZMAR became MAR when the Zeus program ended in favor of the Nike-X system in 1963; the MAR was made of a large number of small antennas, each one connected to a separate computer-controlled transmitter or receiver. Using a variety of beamforming and signal processing steps, a single MAR was able to perform long-distance detection, track generation, discrimination of warheads from decoys, tracking of the outbound interceptor missiles. MAR allowed the entire battle over a wide space to be controlled from a single site; each MAR, its associated battle center, would process tracks for hundreds of targets. The system would select the most appropriate battery for each one, hand off particular targets for them to attack. One battery would be associated with the MAR, while others would be distributed around it.
Remote batteries were equipped with a much simpler radar whose primary purpose was to track the outgoing Sprint missiles before they became visible to the distant MAR. These smaller Missile Site Radars were passively scanned, forming only a single beam instead of the MAR's multiple beams; the first Soviet APAR, the 5N65, was developed in 1963-1965 as a part of the S-225 ABM system. After some modifications in the system concept in 1967 it was built at Sary Shagan Test Range in 1970-1971 and nicknamed Flat Twin in the West. Four years another radar of this design was built on Kura Test Range, while the S-225 system was never commissioned; the first military ground-based AESA was the J/FPS-3 which became operational with the 45th Aircraft Control and Warning Group of the Japan Self-Defense Forces in 1995. The first series production ship-based AESA was the OPS-24, a fire-control radar introduced on the Japanese Asagiri-class destroyer DD-155 Hamagiri launched in 1988; the first airborne series production AESA was the EL/M-2075 Phalcon on a Boeing 707 of the Chilean Air Force that entered service in 1994.
The first AESA on a combat aircraft was the J/APG-1 introduced on the Mitsubishi F-2 in 1995. The first AESA on a missile is the seeker head for the AAM-4B, an air-to-air missile carried by the Mitsubishi F-2 and Mitsubishi-built McDonnell-Douglas F-15J. US based manufacturers of the AESA radars used in the F-22 and Super Hornet include Northrop Grumman and Raytheon; these companies design and manufacture the transmit/receive modules which comprise the'building blocks' of an AESA radar. The requisite electronics technology was developed in-house via Department of Defense research programs such as MMIC Program. Radar systems work by connecting an antenna to a powerful radio transmitter to emit a short pulse of signal; the transmitter is disconnected and the antenna is connected to a sensitive receiver which amplifies any echos from target objects. By measuring the time it takes for the signal to return, the radar receiver can determine the distance to the object; the receiver sends the resulting output to a display of some sort.
The transmitter elements were klystron tubes or magnetrons, which are suitable for amplifying or generating a narrow range of frequencies to high power levels. To scan a portion of the sky, the radar antenna must be physically moved to point in different directions. Starting in the 1960s new solid-state devices capable of delaying the transmitter signal in a controlled way were introduced; that led to the first practical large-scale passive electronically scanned array, or phased array radar. PESAs took a signal from a single source, split it into hundreds of paths, selectively delayed some of them, sent them to individual antennas; the radio signals from the separate antennas overlapped in space, the interference patterns between the individual signals was controlled to reinforce the signal in certain directions, mute it in all others. The delays could be controlled electronically, allowing the beam to be steered quickly without moving the antenna. A PESA can scan a volume of space much quicker than a traditional mechanical system.
Additionally, thanks to progress in electronics, PESAs added the ability to produce several active beams, allowing them to continue scanning the sky while at the same time focusing smaller beams on ce
Farfantepenaeus is a genus of prawns in the family Penaeidae. Its eight species were included in the genus Penaeus, it was first published as a genus name in 1972 by Rudolf N. Burukovsky, but without the necessary designation of a type species; that situation was corrected by the same author in 1997. The name Farfantepenaeus commemorates the Cuban carcinologist Isabel Pérez Farfante. Farfantepenaeus aztecus – northern brown shrimp Farfantepenaeus brasiliensis – red-spotted shrimp, spotted pink shrimp Farfantepenaeus brevirostris – crystal shrimp, pink shrimp Farfantepenaeus californiensis – yellowleg shrimp, brown shrimp Farfantepenaeus duorarum – northern pink shrimp Farfantepenaeus notialis – southern pink shrimp Farfantepenaeus paulensis – São Paulo shrimp, Carpas shrimp Farfantepenaeus subtilis – southern brown shrimp
Stonyhurst College is Roman Catholic and has had a significant place in English Catholic history for many centuries. In 1803 the Society of Jesus was re-established in Britain at Stonyhurst and the school became the headquarters of the English Province; until the 1920s Jesuit priests were trained on site in. The school continues to place Jesuit philosophy at its core; the present chaplain is Father John Twist, SJ. Stonyhurst is distinguished by the central and distinctive Jesuit ethos "creating men and women for others"; the Jesuit mission statement is "Creating people of Good Judgement, Clarity of Thought, Principled Leaders for the Next Generation". The Jesuit ethos has three central components: Creating men and women for others Stonyhurst has a long and well-developed tradition of voluntary service, helping students to understand the problems faced by disadvantaged people; this tradition had evolved today into the Arrupe programme named after the Jesuit priest Pedro Arrupe from Spain. The programme places students in a wide variety of community settings with the aim that every student will have volunteered during their time at school.
Students are encouraged to use their skills to contribute to society. One of the opportunities that students have through being part of the wider Jesuit community is the "Chiwirangwe" project that twins Stonyhurst with the Jesuit school, St Peter's Kubatana; the project is organised as part of their Companions programme that twins all nine UK Jesuit schools with Jesuit schools around the world. Stonyhurst alumni have the opportunity to take a gap year working in Jesuit projects around the world. Pupils run, under the supervision of adult trustees, their own charity, Learning to Care, raising money for various causes. St Mary's Hall has its equivalent called Children for Children; each year the S. C. H. T. Week takes place at St Mary's Hall, it is funded through the sale of Christmas cards and the Poetry Banquet, organised and managed by pupils. During the holiday week, as it is known and Rhetoricians volunteer a week of their summer holiday in order to look after disadvantaged or disabled children from local schools, giving them an enjoyable holiday, with activities and trips out, which they would otherwise be unable to experience.
Ignatian spirituality This, based on the Spiritual Exercises of St Ignatius of Loyola, is confident and outward looking, encouraging the school and its students to engage with the complexities of modern life. A Jesuit Catholic education provides both a solid grounding in the teachings of the Catholic Church whilst encouraging a robust philosophical engagement with faith and moral issues; the Jesuit retreats that pupils experience aim to lay the foundations for a lifelong personal relationship with God. The school runs a thriving Easter Retreat each year for the Association and friends. Development of Reasoning Skills Well developed reasoning skills are seen as essential both for students to think through their faith and to be effective in the contributions they make to society; the Jesuits remain at the fore in the intellectual life of the Catholic Church. With many universities worldwide, they run colleges in both London. In recent years the number of Jesuits at the school has diminished, but the school keeps a strong connection with the order through its history, religious life, the governing body and a small Jesuit community which now resides in the Old Infirmary.
Since the Second Vatican Council the Jesuits have worked hard to develop a partnership between lay and religious people. Jesuit schools are supported through a strong network co-ordinated by a Director of Education based in London. Roman Catholicism and the Jesuit identity are still much at the heart of the school, reflected in its ethos and relationship to the community; the spiritual life of the school is led by a Jesuit chaplain and lay chaplaincy team, based in the Emmaus Centre adjoining the Do Room, the former Jesuit Refectory. It is a long-standing practice that pupils write A. M. D. G. in the top left hand corner of any piece of work. It stands for the Latin phrase Ad Majorem Dei Gloriam. At the end of a piece of work they write L. D. S. in the centre of the page. It stands for Laus Deo Semper. A distinguishing feature of Stonyhurst is the singing of the Pater Noster, the "Lord's Prayer" in Latin, it is not only sung at Mass. The school has one main church, St Peter's, five chapels: The Boys', the St Aloysius Chapel and the St Ignatius Chapel, both within the towers of St Peter's Church, the Sodality.
The latter is the home of the remains of third century Roman convert Saint Gordianus. His bones have rested beneath the altar since 1859, having travelled with the Jesuits from the College of St Omer, he was temporarily removed again in 2006 while the chapel underwent restoration, but has since been returned. The Chapel is once again used by the re-established Sodality; the interior of the Victorian St Peter's Church was ornately decorated with angels and elaborate patterns until the 1950s when these were white-washed over. The Bayley Room was a chapel in the old hall, at one time the present day Classics Department was a staff chapel; the orig
John Singleton referred to as John Singleton Jr. was an English horse racing jockey of the late 18th and early 19th century. He was the third John Singleton from the same family to achieve prominence in racing circles, following his father John and his great uncle John, his father John married the daughter of the groom at his master Lord Rockingham's stud. Singleton was born in France, he was being lined up to go into a medical career, under the tutelage of his maternal uncle, a surgeon in Sheffield. Instead, he ran away to Newmarket to the stables of the Duke of Bedford. For Bedford, Singleton rode to victory in three British Classic Races - the 1791 Oaks on Portia (aged just, the 1793 Oaks on Caelia and, his most famous victory, the 1797 Derby on an unnamed colt by Fidget. Back in his family's native Yorkshire he won the 1802 St. Leger on Orville for Lord Fitzwilliam, who had inherited the estates of his uncle, Lord Rockingham, the man who had provided Singleton's father and great uncle with so many of their victories, employed his maternal grandfather as stud groom.
Singleton died two months at the age of 26, "highly respected and lamented" by the Newmarket racing community. Great Britain Epsom Derby - Colt by Fidget Epsom Oaks - Portia, Caelia St Leger - Orville Mortimer, Roger. Biographical Encyclopaedia of British Racing. London: Macdonald and Jane's. ISBN 0-354-08536-0. Tanner, Michael. Great Jockeys of the Flat. Enfield, Middlesex: Guinness Publishing. ISBN 0-85112-989-7
Ronald LaTour, professionally known as Cardo Got Wings or Cardo, is an American record producer and rapper. Cardo was raised in St. Paul, Minnesota. Cardo moved to Fort Worth, Texas. In 2010, Cardo was producing for Mac Miller and Chevy Woods and subsequently met Wiz Khalifa at a show in Texas through Chevy Woods and his Uncle Motor. Cardo gave Khalifa a couple of his beats, which would end up on Khalifa's Kush & Orange Juice mixtape. Cardo started producing for other artists. Cardo is the founder and current CEO of Everything is Gold Music. Cardo was a member of, producer on, Taylor Gang Records, signed to Fool's Gold Records, he has produced on many rappers albums and singles including Curren$y, 2 Chainz, Kendrick Lamar, Wiz Khalifa, R. Kelly, Jay Z, Frank Dukes and Swizz Beatz, among others. On December 21, 2017, Cardo and Payroll Giovanni of Detroit-based Doughboyz Cashout announced their partnership with Def Jam Records. Cardo's professional name was derived from relatives who named him,'Ricardo' the Puerto Rican, despite being aware of his Caucasian and African American descent.
Cardo on Twitter
Daniele Vicari is an Italian director and producer. Born in Collegiove, Province of Rieti, Vicari graduated from Rome's University La Sapienza in History and Critics of Cinema under Guido Aristarco. Between 1990 and 1999 he was a film critic for the magazines Cinema Nuovo and Cinema 60, in the same period he filmed his first shorts. After shooting several documentary films, in 2002 Vicari made his feature film debut with the drama Maximum Velocity, entered into the competition at the 59th edition of the Venice International Film Festival and got him a David di Donatello for best new director, his 2006 film My Country won a David di Donatello for best documentary film. Maximum Velocity The Horizon of Events My Country The Past Is a Foreign Land Diaz – Don't Clean Up This Blood Anija; the Ship Daniele Vicari on IMDb