click links in text for more info
SUMMARY / RELATED TOPICS

The Mythical Man-Month

The Mythical Man-Month: Essays on Software Engineering is a book on software engineering and project management by Fred Brooks first published in 1975, with subsequent editions in 1982 and 1995. Its central theme is that "adding manpower to a late software project makes it later"; this idea is known as Brooks' law, is presented along with the second-system effect and advocacy of prototyping. Brooks' observations are based on his experiences at IBM while managing the development of OS/360, he had added more programmers to a project falling behind schedule, a decision that he would conclude had, counter-intuitively, delayed the project further. He made the mistake of asserting that one project—involved in writing an ALGOL compiler—would require six months, regardless of the number of workers involved; the tendency for managers to repeat such errors in project development led Brooks to quip that his book is called "The Bible of Software Engineering", because "everybody quotes it, some people read it, a few people go by it".

The book is regarded as a classic on the human elements of software engineering. The work was first published in 1975, reprinted with corrections in 1982, republished in an anniversary edition with four extra chapters in 1995, including a reprint of the essay "No Silver Bullet" with commentary by the author. Brooks discusses several causes of scheduling failures; the most enduring is his discussion of Brooks's law: Adding manpower to a late software project makes it later. Man-month is a hypothetical unit of work representing the work done by one person in one month. Complex programming projects cannot be partitioned into discrete tasks that can be worked on without communication between the workers and without establishing a set of complex interrelationships between tasks and the workers performing them. Therefore, assigning more programmers to a project running behind schedule will make it later; this is because the time required for the new programmers to learn about the project and the increased communication overhead will consume an ever-increasing quantity of the calendar time available.

When n people have to communicate among themselves, as n increases, their output decreases and when it becomes negative the project is delayed further with every person added. Group intercommunication formula: n / 2 Example: 50 developers give 50 · / 2 = 1225 channels of communication. Brooks added "No Silver Bullet — Essence and Accidents of Software Engineering"—and further reflections on it, "'No Silver Bullet' Refired"—to the anniversary edition of The Mythical Man-Month. Brooks insists that there is no one silver bullet -- "there is no single development, in either technology or management technique, which by itself promises one order of magnitude improvement within a decade in productivity, in reliability, in simplicity." The argument relies on the distinction between accidental complexity and essential complexity, similar to the way Amdahl's law relies on the distinction between "strictly serial" and "parallelizable". The second-system effect proposes that, when an architect designs a second system, it is the most dangerous system they will design, because they will tend to incorporate all of the additions they did not add to the first system due to inherent time constraints.

Thus, when embarking on a second system, an engineer should be mindful that they are susceptible to over-engineering it. The author makes the observation that in a suitably complex system there is a certain irreducible number of errors. Any attempt to fix observed. Brooks wrote "Question: How does a large software project get to be one year late? Answer: One day at a time!" Incremental slippages on many fronts accumulate to produce a large overall delay. Continued attention to meeting small individual milestones is required at each level of management. To make a user-friendly system, the system must have conceptual integrity, which can only be achieved by separating architecture from implementation. A single chief architect, acting on the user's behalf, decides what goes in the system and what stays out; the architect or team of architects should develop an idea of what the system should do and make sure that this vision is understood by the rest of the team. A novel idea by someone may not be included if it does not fit seamlessly with the overall system design.

In fact, to ensure a user-friendly system, a system may deliberately provide fewer features than it is capable of. The point being, if a system is too complicated to use, many features will go unused because no one has time to learn them; the chief architect produces a manual of system specifications. It should describe the external specifications of the system in detail, i.e. everything that the user sees. The manual should be altered as feedback comes in from the users; when designing a new kind of system, a team will design a throw-away system. This system acts as a "pilot plan" that reveals techniques that will subsequently cause a complete redesign of the system; this second, smarter system should be the one delivered to the customer, since delivery of the pilot system would cause nothing but agony to the customer, ruin the system's reputation and maybe the company. Every project manager should create a small core set of formal documents defining the project objectives, how they are to be achieved, going to achieve them, when they are going to be achieved, how much

Chestnut Hill Reservoir

Chestnut Hill Reservoir is a reservoir created in 1870 on existing marshes and meadowland to supplement the city of Boston's water needs, located in its namesake neighborhood of Chestnut Hill. A 1.56 mile jogging loop abuts the reservoir. Chestnut Hill Reservoir was taken offline in 1978 as it was no longer needed for regular water supply distribution, but is maintained in emergency backup status, it is recognized today on the National Register of Historic Places and was designated as a Boston Landmark by the Boston Landmarks Commission in 1989. On May 1, 2010, the Chestnut Hill Reservoir was temporarily brought back online during a failure of a connecting pipe at the end of the MetroWest Water Supply Tunnel; the Sudbury aqueduct was activated to feed Chestnut Hill from the Foss and Sudbury reservoirs to keep the supply going. Separately the Spot Pond reservoir an emergency source, was tapped during the pipe break incident. Though a boil-water order was issued for fear that the water would not be safe to drink, following heavy treatment with chlorine tests showed the water to be safe for drinking.

In mid April 2012, the body of a Boston College student, missing for seven weeks was found in the reservoir. Initial autopsy results were consistent with the student having accidentally drowned. Reservoir, Green Line Cleveland Circle, Green Line Chestnut Hill Avenue, Green Line Chestnut Hill Reservoir Historic District Chestnut Hill Reservation Chestnut Hill Reservation History at the Department of Conservation and Recreation U. S. Geological Survey Geographic Names Information System: Chestnut Hill Reservoir

Ray Moujalli

Ray Moujalli is a former Lebanon international rugby league footballer who most played for the Canterbury-Bankstown Bulldogs as a prop in the NSW Cup competition. He was born in Australia. Moujalli made his NRL debut in round 15 2009 for the Sydney Roosters, against the North Queensland Cowboys. Between 2009 and 2015 Moujalli played over 100 games for Newtown. Moujalli signed with Canterbury after six seasons with Newtown for the start of the 2017 Intrust Super Premiership season. At the beginning of the season he was announced as captain for the year.. Moujalli represented Lebanon at The 2017 rugby league world cup. Following the tournament, Moujalli retired as a professional rugby league footballer and now works as Canterbury's strength and conditioning coach. 2017 RLWC profile

John Renbourn discography

John Renbourn was an English guitarist and composer. His discography consists of 20 studio albums, 5 live albums, 19 compilations, 2 videos. In addition, his compositions and guitar work have been featured on a number of albums by other artists. 1965: John Renbourn 1966: Another Monday 1968: Sir John Alot of Merrie Englandes Musyk Thyng and ye Grene Knyghte 1970: The Lady and the Unicorn 1971: Faro Annie 1973: Heads and Tales Compilation - one track only 1976: The Guitar of John Renbourn released 2005, a.k.a. The Guitar Artistry of John Renbourn 1976: The Hermit 1977: A Maid in Bedlam 1979: The Black Balloon 1979: So Early in the Spring 1979: One Morning Very Early 1980: The Enchanted Garden with the John Renbourn Group. CD released in 1990. 1982: Live in America with the John Renbourn Group. 1986: The Nine Maidens 1988: Folk Blues of John Renbourn 1988: John Renbourn's Ship of Fools 1996: Lost Sessions 1998: Traveller's Prayer 2006: John Renbourn & Friends 2011: Palermo Snow 1968: The Pentangle 1968: Sweet Child 1969: Basket of Light 1970: Cruel Sister 1971: Reflection 1972: Solomon's Seal 2016: Finale: An Evening With... 1992: A Thousand Words 1992: Wheel of Fortune 1965: There You Go 1967: Watch the Stars 1978: John Renbourn and Stefan Grossman 1979: Under the Volcano 1982: Keeper of the Vine: Best of John Renbourn and Stefan Grossman contains selected tracks from John Renbourn and Stefan Grossman and from Under the Volcano 1984: Live...

In Concert 1987: The Three Kingdoms 1997: Snap a Little Owl contains 10 tracks from John Renbourn and Stefan Grossman and 3 tracks from Under the Volcano 1966: Bert and John - re-released with additional tracks by Bert Jansch under the title After the Dance in 1992 on Shanachie 1982: How To Play Folk Guitar with - compilation 1982: Renbourn & Jansch - compilation 2016: Joint Control 1981: Live in America with the John Renbourn Group 1984: Live... In Concert with Stefan Grossman 1993: Wheel of Fortune with Robin Williamson 1998: BBC Live in Concert 2006: Live in Italy 1971: The John Renbourn Sampler 1973: So Clear: The John Renbourn Sampler Volume Two 1973: John Renbourn - released in US and Canada 1979: The Lady And The Unicorn - compilation of two albums: Sir John A lot of... and The Lady And The Unicorn 1980: John Renbourn / Another Monday -compilation of two albums 1986: The Essential Collection Vol 1: The Soho Years 1987: The Essential Collection Vol 2: The Moon Shines Bright 1989: A Mediaeval Almanack 1992: The Essential John Renbourn 1995: Will the Circle Be Unbroken: The Collection 1996: The Lady And The Unicorn / The Hermit - compilation of two albums 1998: Definitive Transatlantic Collection 1999: Collected 2000: Down on the Barge 2000: The Transatlantic Anthology 2001: Heritage 2001: The Best Of John Renbourn 2007: Nobody's Fault But Mine: The Anthology 2015: The Attic Tapes 1972: "The Cuckoo" / "Little Sadie" 2004: Rare Performances 1965-1995 2004: John Renbourn & Jacqui McShee in Concert with Jacqui McShee 1965: Bert Jansch - It Don't Bother Me - guitar on track 7, "My Lover".

A. Turnaround - track 9, "Lady Nothing" 1975: John James - Head In The Clouds (Transatlan

Hexenloch Mill

The Hexenloch Mill the Dreistegen Mill, lies in the ravine-like Hexenloch in the Black Forest in Germany between St. Märgen and Furtwangen in the parish of Furtwangen-Neukirch, it was built in 1825 and has been in the same family since 1839. It is the only mill in the Black Forest with two water wheels. In 1825, the part with the smaller water wheel was built as a nail smithy; the part with the larger water wheel was built as a sawmill. The nail smithy was turned into a workshop for the clockmaking works; the mill and restaurant are open daily all year round, except for 2 weeks in March. Hexenlochmühle Andorf's Schwarzwaldführer Spiegel Online: Schwarzwald Im Tal der nie aufgehenden Sonne

Guto Ferreira

Augusto Sérgio Ferreira, known as Guto Ferreira, is a Brazilian football manager. Born in Piracicaba, São Paulo, Ferreira began his career with hometown side XV de Piracicaba. After a quick spell at Guarani as a performance analyst, he joined São Paulo's youth sides in 1995. In 2000, after spending three years with the youth teams, Ferreira was named assistant manager of Internacional, he won that year's Campeonato Gaúcho and was permanently appointed as manager on 4 June 2002, but was still sacked on 26 August. On 15 May 2003, Ferreira was appointed manager of Noroeste; the following 17 August he moved abroad, joining Segunda Liga side F. C. Penafiel. On 4 February 2004, Ferreira was dismissed. On 29 August, he was appointed at the helm of Associação Naval 1º de Maio, but was relieved from his duties on 12 September. In 2005 Ferreira returned to Brazil. After a spell at 15 de Novembro-RS, he returned to Internacional in 2008, again as an assistant. In the following two years, Ferreira managed Mogi Mirim, Criciúma and ABC.

On 24 September 2012, he was appointed manager of Ponte Preta. Ferreira was dismissed on 6 June 2013, on 28 July he was named Portuguesa manager, with the side threatened with relegation, he managed to finish 12th with the club, but the side suffered relegation due to irregularly fielding in a player. On 24 July 2014 after leaving Figueirense, Ferreira returned to Ponte, he was sacked on 3 August 2015, was appointed manager of Chapecoense on 14 September. On 24 June 2016, Ferreira left Chape after agreeing to a deal with Bahia, he left the club in the same manner the following 30 May, after returning to Inter, now in the first team. On 11 November 2017, after a 1–1 draw against Vila Nova and thus losing the leadership of 2017 Campeonato Brasileiro Série B, Ferreira was relieved from his duties. On 26 December, he was sacked the following 3 June. On 7 August 2018, Ferreira was appointed manager of Chape for the second time, but was dismissed on 15 October. On 20 February of the following year, he took over Sport, helping in their promotion to the first division at the end of the season but being dismissed on 13 February 2020 after a poor start of the campaign.

InternacionalCampeonato Gaúcho: 2002 Copa São Paulo de Futebol Júnior: 1998ChapecoenseCampeonato Catarinense: 2016BahiaCopa do Nordeste: 2017 Campeonato Baiano: 2018SportCampeonato Pernambucano: 2019 Guto Ferreira manager stats at ForaDeJogo Guto Ferreira coach profile at Soccerway