Wednesday, November 7, 2007


This article is part of the series: Politics and government of Lithuania
The Prime Minister of Lithuania is the head of the executive arm of Lithuania's government, and is chosen by the Lithuanian parliament, the Seimas. The modern office of Prime Minister was established in 1990, although the official title was "Chairperson of the Council of Ministers" until 25 November 1992. The post was established during the turmoil surrounding the Soviet Union's collapse, and was organized by Sąjūdis, a multi-party coalition in favour of Lithuanian independence.
Historically, the title of Prime Minister was also used between 1918 and 1940. This was during the original Republic of Lithuania, which lasted from the collapse of the Russian Empire until the country's annexation by the Soviet Union.

Constitution
Constitutional Court
President

  • Valdas Adamkus
    Prime Minister

    • Gediminas Kirkilas
      Parliament
      Political parties
      Elections
      Referendums
      Administrative divisions

      • Counties
        Municipalities
        Elderships
        Politics of the European Union
        Foreign relations

        • Ministers of Foreign Affairs Prime Minister of Lithuania Prime Ministers 1918-1940

Tuesday, November 6, 2007


Multiprocessing is the use of two or more central processing units (CPUs) within a single computer system. The term also refers to the ability of a system to support more than one processor and/or the ability to allocate tasks between them. There are many variations on this basic theme, and the definition of multiprocessing can vary with context, mostly as a function of how CPUs are defined (multiple cores on one die, multiple chips in one package, multiple packages in one system unit, etc.).
Multiprocessing sometimes refers to the execution of multiple concurrent software processes in a system as opposed to a single process at any one instant. However, the term multiprogramming is more appropriate to describe this concept, which is implemented mostly in software, whereas multiprocessing is more appropriate to describe the use of multiple hardware CPUs. A system can be both multiprocessing and multiprogramming, only one of the two, or neither of the two.

Types
In a multiprocessing system, all CPUs may be equal, or some may be reserved for special purposes. A combination of hardware and operating-system software design considerations determine the symmetry (or lack thereof) in a given system. For example, hardware or software considerations may require that only one CPU respond to all hardware interrupts, whereas all other work in the system may be distributed equally among CPUs; or execution of kernel-mode code may be restricted to only one processor (either a specific processor, or only one processor at a time), whereas user-mode code may be executed in any combination of processors. Multiprocessing systems are often easier to design if such restrictions are imposed, but they tend to be less efficient than systems in which all CPUs are utilized equally.
Systems that treat all CPUs equally are called symmetric multiprocessing (SMP) systems. In systems where all CPUs are not equal, system resources may be divided in a number of ways, including asymmetric multiprocessing (ASMP), non-uniform memory access (NUMA) multiprocessing, and clustered multiprocessing (qq.v.).

Multiprocessing Processor symmetry
In multiprocessing, the processors can be used to execute a single sequence of instructions in multiple contexts (single-instruction, multiple-data or SIMD, often used in vector processing), multiple sequences of instructions in a single context (multiple-instruction, single-data or MISD, used for redundancy in fail-safe systems and sometimes applied to describe pipelined processors or hyperthreading), or multiple sequences of instructions in multiple contexts (multiple-instruction, multiple-data or MIMD).

Instruction and data streams
Tightly-coupled multiprocessor systems contain multiple CPUs that are connected at the bus level. These CPUs may have access to a central shared memory (SMP or UMA), or may participate in a memory hierarchy with both local and shared memory (NUMA). The IBM p690 Regatta is an example of a high end SMP system. Intel Xeon processors dominated the multiprocessor market for business PCs and were the only x86 option till the release of AMD's Opteron range of processors in 2004. Both ranges of processors had their own onboard cache but provided access to shared memory; the Xeon processors via a common pipe and the Opteron processors via independent pathways to the system RAM.
Chip multiprocessors, also known as multi-core computing, involves more than one processor placed on a single chip and can be thought of the most extreme form of tightly-coupled multiprocessing. Mainframe systems with multiple processors are often tightly-coupled.
Loosely-coupled multiprocessor systems (often referred to as clusters) are based on multiple standalone single or dual processor commodity computers interconnected via a high speed communication system (Gigabit Ethernet is common). A Linux Beowulf cluster is an example of a loosely-coupled system.
Tightly-coupled systems perform better and are physically smaller than loosely-coupled systems, but have historically required greater initial investments and may depreciate rapidly; nodes in a loosely-coupled system are usually inexpensive commodity computers and can be recycled as independent machines upon retirement from the cluster.
Power consumption is also a consideration. Tightly-coupled systems tend to be much more energy efficient than clusters. This is because considerable economies can be realized by designing components to work together from the beginning in tightly-coupled systems, whereas loosely-coupled systems use components that were not necessarily intended specifically for use in such systems.

Software implementation issues
MIMD multiprocessing architecture is suitable for a wide variety of tasks in which completely independent and parallel execution of instructions touching different sets of data can be put to productive use. For this reason, and because it is easy to implement, MIMD predominates in multiprocessing.
Processing is divided into multiple threads, each with its own hardware processor state, within a single software-defined process or within multiple processes. Insofar as a system has multiple threads awaiting dispatch (either system or user threads), this architecture makes good use of hardware resources.
MIMD does raise issues of deadlock and resource contention, however, since threads may collide in their access to resources in an unpredictable way that is difficult to manage efficiently. MIMD requires special coding in the operating system of a computer but does not require application changes unless the applications themselves use multiple threads (MIMD is transparent to single-threaded applications under most operating systems, if the applications do not voluntarily relinquish control to the OS). Both system and user software may need to use software constructs such as semaphores (also called locks or gates) to prevent one thread from interfering with another if they should happen to cross paths in referencing the same data. This gating or locking process increases code complexity, lowers performance, and greatly increases the amount of testing required, although not usually enough to negate the advantages of multiprocessing.
Similar conflicts can arise at the hardware level between CPUs (cache contention and corruption, for example), and must usually be resolved in hardware, or with a combination of software and hardware (e.g., cache-clear instructions).

MIMD multiprocessing
SIMD multiprocessing is well suited to parallel or vector processing, in which a very large set of data can be divided into parts that are individually subjected to identical but independent operations. A single instruction stream directs the operation of multiple processing units to perform the same manipulations simultaneously on potentially large amounts of data.
For certain types of computing applications, this type of architecture can produce enormous increases in performance, in terms of the elapsed time required to complete a given task. However, a drawback to this architecture is that a large part of the system falls idle when applications or system tasks are executed that cannot be divided into units that can be processed in parallel.
Additionally, applications must be carefully and specially written to take maximium advantage of the architecture, and often special optimizing compilers designed to produce code specifically for this environment must be used. Some compilers in this category provide special constructs or extensions to allow programmers to directly specify operations to be performed in parallel (e.g., DO FOR ALL statements in the version of FORTRAN used on the ILLIAC IV, which was a SIMD multiprocessing supercomputer).
SIMD multiprocessing finds wide use in certain domains such as computer simulation, but is of little use in general-purpose desktop and business computing environments.

MISD multiprocessing

symmetric multiprocessing
Multi-core (computing)
computer multitasking
BMDFM: Binary Modular Dataflow Machine - SMP MIMD Runtime Environment (BMDFM)
Software lockout

Monday, November 5, 2007


Lautering is a process in brewing beer in which the mash is separated into the clear liquid wort and the residual grain. Lautering usually consists of 3 steps: mashout, recirculation, and sparging.
LauteringLautering
Recirculation
Recirculation consists of drawing off wort from the bottom of the mash, and adding it to the top. Lauter tubs typically have slotted bottoms to assist in the filtration process. The mash itself functions much as a sand filter to capture mash debris and proteins. This step is monitored by use of a turbidimeter to measure solids in the wort liquid by their opacity.

Sunday, November 4, 2007


Chess is a recreational and competitive game for two players. Sometimes called Western Chess or International Chess to distinguish it from its predecessors and other chess variants, the current form of the game emerged in Southern Europe in the second half of the 15th century after evolving from similar, much older games of Indian origin.
Today, chess is one of the world's most popular games, played by millions of people worldwide in clubs, online, by correspondence (mail and e-mail), in tournaments (amateur and professional) and informally. Aspects of art and science are found in chess composition and theory. Chess is also advocated as a way of enhancing mental prowess.
The game is played on a square chequered chessboard. At the start, each player ("white" and "black") controls sixteen pieces: one king, one queen, two rooks, two knights, two bishops, and eight pawns. The object of the game is to checkmate the opponent's king, whereby the king is under immediate attack (in "check") and there is no way to remove it from attack on the next move. Theoreticians have developed extensive chess strategies and tactics since the game's inception.
The tradition of organized competitive chess started in the 16th century. The first official World Chess Champion, Wilhelm Steinitz, claimed his title in 1886; Vladimir Kramnik is the current World Champion. There are also biennial world team events called Chess Olympiads. Since the 20th century, two international organizations, the World Chess Federation and the International Correspondence Chess Federation have organized and overseen the top chess competitions and international titles.
One of the goals of early computer scientists was to create a chess-playing machine, and today's chess is deeply influenced by the abilities of current chess programs. In 1997, a match between Garry Kasparov, then World Champion, and IBM's Deep Blue chess program proved for the first time that computers are able to beat even the strongest human players. The popularity of online chess coincided with the growth of the Internet, which started in the mid 1990s.

Rules

History

Main article: Origins of chessChess Predecessors
The pieces in shatranj had limited movement; the elephant or aufin (the predecessor of the modern bishop) could only move by jumping two spaces diagonally, the counselor or fers (the predecessor of the modern queen) could move only one space diagonally, pawns could not advance two spaces on their first move, and there was no castling. Also, pawns could only promote to counselor, which was the weakest piece (after the pawn), due to its limited range. Chess problems became a regular part of 19th century newspapers; Bernhard Horwitz, Josef Kling and Samuel Loyd composed some of the most influential problems. In 1843, the first edition of Handbuch des Schachspiels (Handbook of Chess) was published; written by German chess masters Paul Rudolf von Bilguer and Tassilo von Heydebrand und der Lasa, it was the first comprehensive manual of chess theory.
Origins of the modern game (1450–1850)
The first modern chess tournament was held in London in 1851 and was won, surprisingly, by German Adolf Anderssen, relatively unknown at the time. Anderssen was hailed as the leading chess master and his brilliant, energetic — but from today's viewpoint strategically shallow — attacking style became typical for the time.
Birth of a sport (1850–1945)
After the death of Alekhine, a new World Champion was sought in a tournament of elite players ruled by FIDE, who have, since then, controlled the title. The winner of the 1948 tournament, Russian Mikhail Botvinnik, started an era of Soviet dominance in the chess world. Until the end of the Soviet Union, there was only one non-Soviet champion, American Bobby Fischer (champion 1972–1975).
Post-war era (1945 and later)

Main article: Chess in the arts and literature Place in culture
In the Middle Ages and during the Renaissance, chess was a part of noble culture;
Pre-modern
To the Age of Enlightenment, chess appeared mainly for self-improvement. Benjamin Franklin, in his article "The Morals of Chess" (1750), wrote:
"The Game of Chess is not merely an idle amusement; several very valuable qualities of the mind, useful in the course of human life, are to be acquired and strengthened by it, so as to become habits ready on all occasions; for life is a kind of Chess, in which we have often points to gain, and competitors or adversaries to contend with, and in which there is a vast variety of good and ill events, that are, in some degree, the effect of prudence, or the want of it. By playing at Chess then, we may learn:
1st, Foresight, which looks a little into futurity, and considers the consequences that may attend an action ...
2nd, Circumspection, which surveys the whole Chess-board, or scene of action: - the relation of the several Pieces, and their situations; ...
3rd, Caution, not to make our moves too hastily...."
Moreover, chess is often depicted in the arts, used for example as a metaphor of a struggle of two, as a symbol of cold logic, or - in the spirit of medieval moralists - as an allegory of society's life. Significant works, where chess plays a key role, range from Thomas Middleton's A Game at Chess over Through the Looking-Glass by Lewis Carroll to The Royal Game by Stefan Zweig or Vladimir Nabokov's The Defense. In Ingmar Bergman's 1957 movie The Seventh Seal, a knight plays chess with Death.
When a person is considered expendable and manipulatable, they're considered a pawn.
Modern

Main article: Chess notation Notation for recording moves
Chess strategy consists of setting and achieving long-term goals during the game — for example, where to place different pieces — while tactics concentrate on immediate manoeuvres. These two parts of chess thinking cannot be completely separated, because strategic goals are mostly achieved by the means of tactics, while the tactical opportunities are based on the previous strategy of play.
Because of different strategic and tactical patterns, a game of chess is usually divided into three distinct phases: Opening, usually the first 10 to 25 moves, when players develop their armies and set up the stage for the coming battle; middlegame, the developed phase of the game; and endgame, when most of the pieces are gone and kings start to take an active part in the struggle.
Strategy and tactics

Main article: Chess strategy Fundamentals of strategy

Main article: Chess tactics Fundamentals of tactics

Main article: Chess openingChess Opening

Main article: Middlegame Middlegame

Main article: Endgame Endgame

Main article: Chess problem Chess composition

Competitive play
Contemporary chess is an organized sport with structured international and national leagues, tournaments and congresses. Chess's international governing body is FIDE (Fédération Internationale des Échecs). Most countries have a national chess organization as well (such as the US Chess Federation and English Chess Federation), which in turn is a member of FIDE. FIDE is a member of the International Olympic Committee (IOC), but the game of chess has never been part of the Olympic Games; chess does have its own Olympiad, held every two years as a team event. An estimated 605 million people worldwide know how to play chess, and 7.5 million are members of national chess federations, which exist in 160 countries worldwide. This makes chess one of the most popular sports worldwide. and the reigning Women's World Champion is Xu Yuhua from China. However, the world's highest rated female player, Judit Polgar, has never participated in the Women's World Chess Championship, instead preferring to compete with the leading men.
Other competitions for individuals include the World Junior Chess Championship, the European Individual Chess Championship and the National Chess Championships. Invitation-only tournaments regularly attract the world's strongest players and these include Spain's Linares event, Monte Carlo's Melody Amber tournament, the Dortmund Sparkassen meeting, Sofia's M-tel Masters and Wijk aan Zee's Corus tournament.
Regular team chess events include the aforementioned Chess Olympiad and the European Team Championship. The 37th Chess Olympiad was held 2006 in Turin, Italy; Armenia won the gold in the unrestricted event, and Ukraine took the top medal for the women. The World Chess Solving Championship and World Correspondence Chess Championships are both team and individual events.
Besides these prestigious competitions, there are thousands of other chess tournaments, matches and festivals held around the world every year, which cater to players of all levels, from beginners to experts.
Organization of competitions
The best players can be awarded specific lifetime titles by the world chess organization FIDE:
International Grandmaster (shortened: Grandmaster, GM or IGM) is awarded to world-class chess masters. Apart from World Champion, Grandmaster is the highest title a chess player can attain. Before FIDE will confer the title on a player, the player must have an ELO chess rating (see below) of at least 2500 at one time and three favorable results (called norms) in tournaments involving other Grandmasters, including some from countries other than the applicant's. There are also other milestones a player can achieve to attain the title, such as winning the World Junior Championship.
International Master (shortened: IM). The conditions are similar to GM, but less demanding. The minimum rating for the IM title is 2400.
FIDE Master (shortened: FM). The usual way for a player to qualify for the FIDE Master title is by achieving a FIDE Rating of 2300 or more.
Candidate Master (shortened: CM). Similar to FM, but with a FIDE Rating of at least 2200. Mathematics and computers
There is an extensive scientific literature on chess psychology.
Psychology

Main article: Chess variant Variants

Chess in early literature
Chess terminology
Comparing top chess players throughout history
Timeline of chess
List of chess players
List of chess topics
List of famous chess games
List of strong chess tournaments
List of chess world championship matches
Women's World Chess Championship
List of national chess championships
Chess Olympiad See also

Notes

Davidson, Henry A. (1949, 1981). A Short History of Chess. McKay. ISBN 0-679-14550-8. 
Harding, Tim (2003). Better Chess for Average Players. Courier Dover Publications. ISBN 0-486-29029-8. 
Hooper, David and Whyld, Kenneth (1992). The Oxford Companion to Chess, 2nd Edition. Oxford University Press. ISBN 0-19-866164-9.  Reprint: (1996) ISBN 0-19-280049-3
Kasparov, Garry (2003a). My Great Predecessors, part I. Everyman Chess. ISBN 1-85744-330-6. 
Kasparov, Garry (2003b). My Great Predecessors, part II. Everyman Chess. ISBN 1-85744-342-X. 
Kasparov, Garry (2004a). My Great Predecessors, part III. Everyman Chess. ISBN 1-85744-371-3. 
Kasparov, Garry (2004b). My Great Predecessors, part IV. Everyman Chess. ISBN 1-85744-395-0. 
Kasparov, Garry (2006). My Great Predecessors, part V. Everyman Chess. ISBN 1-85744-404-3.  International organizations

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Chessville
The Week in Chess

Saturday, November 3, 2007

Saltburn railway station
A B C D E F G H I J K L M N O P Q R S T U V W X Y Z  
Saltburn Railway Station serves the town of Saltburn-by-the-Sea in the borough of Redcar and Cleveland and the ceremonial county of North Yorkshire, England. It is the terminus (end of the line) of the Tees Valley Line and is operated by Northern Rail who provide all passenger train services. It is unmanned, and has one acrylic glass passenger shelter which is regularly subject to vandalism.

Friday, November 2, 2007


"Birdman of Alcatraz" redirects here. For the 1962 film, see Birdman of Alcatraz (film).
Robert Franklin Stroud (January 28, 1890November 21, 1963), known as the Birdman of Alcatraz, was a prisoner in Alcatraz who supposedly found solace from segregation by raising and selling birds. Despite his nickname, he actually kept birds in the penitentiary in Leavenworth until he was transferred to Alcatraz.

Early life
According to Stroud, on January 18, 1909, while he was away at work, an acquaintance of theirs, F. K. "Charlie" Von Dahmer, viciously beat Kitty. That night, Stroud confronted Von Dahmer and a struggle ensued, resulting in the latter's death from a gunshot wound. However, according to police reports from the time, Kitty had continued to engage in prostitution after arriving in Juneau, with Stroud acting as her pimp. The reports stated that Stroud had knocked Von Dahmer unconscious and then shot him at point blank range.
Stroud was later arrested with Von Dahmer's wallet in his possession. Although Stroud's mother Elizabeth retained a lawyer for her son, on August 23, 1909, he was convicted of manslaughter and sentenced to 12 years in the federal penitentiary on Puget Sound's McNeil Island. (Stroud's crime was handled in the federal system, as Alaska was not yet a state with its own judiciary.)

Arrest, trial and imprisonment
While at McNeil Island, Stroud assaulted a hospital orderly who had reported him to the administration for attempting to obtain morphine through threats and intimidation and also reportedly stabbed a fellow inmate who was involved in the attempt to smuggle the narcotics.
On September 5, 1912, Stroud was sentenced to an additional six months for the attacks and transferred from McNeil Island to the federal penitentiary in Leavenworth, Kansas. While there, Stroud was reprimanded by a guard in the cafeteria for a minor rule violation. Although the infraction was not a serious one, it could have annulled Stroud's visitation privilege to meet his younger brother, whom he had not seen in eight years. Stroud stabbed and killed a guard, Andrew Turner, on March 26, 1916. He was sentenced to execution by hanging on May 27 and was ordered to await his death sentence in solitary confinement. The trial was later invalidated. In a later trial he was given a life sentence. That trial was also invalidated, after reaching the U.S. Supreme Court, which ordered a new trial, set for May 1918. On June 28, he was again sentenced to death by hanging. The Supreme Court intervened, but only to uphold the death sentence, which was scheduled to be carried out on April 23, 1920.
At this point, Stroud's mother appealed to President Woodrow Wilson and his wife, Edith Bolling Wilson, who halted the execution. Stroud's sentence was again commuted to life imprisonment. Leavenworth's warden, T. W. Morgan, did not approve of the decision, and ordered that Stroud was to be held in segregation for the complete duration of his imprisonment.

Birdman of Alcatraz Prison life
While at Leavenworth, Stroud found three injured sparrows in the prison yard and kept them. He started to occupy his time raising and caring for his birds, soon switching from sparrows to canaries, which he could sell for supplies and to help support his mother. Soon thereafter, Leavenworth's administration changed and the prison was now directed by a new warden. Impressed with the possibility of presenting Leavenworth as a progressive rehabilitation penitentiary, the new warden furnished Stroud with cages, chemicals, and stationery to conduct his ornithological activities. Visitors were shown Stroud's aviary and many purchased his canaries. Over the years, he raised nearly 300 canaries in his cells and wrote two books, Diseases of Canaries and Stroud's Digest on the Diseases of Birds. He made several important contributions to avian pathology, most notably a cure for the hemorrhagic septicemia family of diseases. He gained respect and also some level of sympathy in the bird-loving field.
Soon, Stroud's activities created problems for the prison management. According to regulations, each letter sent or received at the prison had to be read, copied and approved. He was so involved in his business that this alone required a full-time prison secretary. Also, most of the time, his birds were let free to fly in his cells. With the very high number of birds he kept, his cell was dirty and Stroud's personal hygiene was reported to be gruesome. In 1931, an attempt to force Stroud to discontinue his business and get rid of his birds failed after Stroud and his future wife, Della Mae Jones, made his story known to newspapers and magazines and undertook a massive letter- and petition-writing campaign that climaxed in a 50,000-signature petition being mailed to the president. The resultant public outcry allowed Stroud to keep his birds and he was even given a second cell to house them, but his letter-writing privileges were greatly curtailed.
In 1933, however, Stroud took out an advertisement to publicize the fact that he had not received any royalties from the sales of Diseases of Canaries. In retaliation, the publisher complained to the warden and, as a result, proceedings were initiated to transfer Stroud to Alcatraz, where he would not be permitted to keep his birds. Stroud, however, discovered a legal loophole, according to which, he would be allowed to remain in Kansas if he were married there. He therefore married Della Jones in 1933, though he infuriated not only prison officials, who would not allow him to correspond with his wife, but also his mother, who refused any further contact with him and died four years later, in 1937. However, Stroud was able to keep his birds and his canary-selling business until it was discovered, several years later, that some of the equipment Stroud had requested for his lab was in fact being used to create alcohol with a home-made still.
Alcatraz
Initially, Stroud had a close relationship with his mother. She helped him with legal proceedings on many occasions, even managing to elicit sympathy from the president over her son's death sentence. Stroud kept busy with his bird enterprise and had numerous bird-loving pen-pals. He started a regular correspondence with a woman named Della Mae Jones, a bird researcher, resulting in her move to Kansas in 1931 and starting a business with Stroud, selling his medicines. Stroud's mother strongly disapproved of the relationship and moved away from the Leavenworth area. She also argued against her son's application for parole, which became a major obstacle in his attempts to be released from the prison system.

The book and film
According to those who knew Stroud while he was in prison, the mild-mannered characterization of him, as presented in Gaddis's book and the subsequent film was largely fiction. In Full Circle with Michael Palin, one of his fellow prisoners said, "He was a jerk. He was a guy that thrived on chaos, turmoil, upheaval. He liked other people to be involved in these kind of things, but he was never a participant." When asked by Palin what he thought of the movie, he replied, "Fantasy." Some have challenged the claim that Stroud's transfer to Alcatraz was due to some of the equipment he requested being used to make alcoholic beverages (which was depicted in the film though not shown as the reason for his transfer). There were also allegations of sadism and pedophilia which were raised by short stories allegedly written by Stroud and submitted to magazines for possible publication.

Thursday, November 1, 2007

Rhondda (UK Parliament constituency) Boundaries
This constituency was first created under the Redistribution of Seats Act 1885, for the 1885 general election. For the 1918 general election it was divided into Rhondda East and Rhondda West.
The constituency was re-united in 1974. Since 1974, the constituency has always had a large Labour majority, and in the 1987 UK general election was the safest seat for any party, anywhere in the UK.

History

Constituency created (1885)
1885 – 1918: William Abraham, Lib-Lab 1885 - 1910, then Labour
Constituency abolished (1918)
Constituency revived (1974)
1974 – 1983: Alec Jones, Labour
1983 – 2001: Allan Rogers, Labour
2001present: Chris Bryant, Labour Election results

Historical list of MPs
Election result, 2005 (BBC)
Election results, 1997 - 2001 (BBC)
Election results, 1997 - 2001 (Election Demon)
Election results, 1983 - 1992 (Election Demon)
Election results, 1992 - 2005 (Guardian)
Election results, 1974 - 2001 (Keele University)