Tuesday, July 5, 2016

Soccer

A player in red has penetrated the defense and is taking a shot at the goal, which the goalkeeper will attempt to stop.
Association football, commonly known as football or soccer, is a team sport played between two teams of 11 players each. It is widely considered to be the most popular sport in the world.
Soccer is played on a rectangular grass field—also called a pitch—or, occasionally, on artificial turf, with a goal at each end of the field. The object of the game is to score by maneuvering the ball into the opposing goal. Only the goalkeeper may use his hands or arms to propel or catch the ball in general play. The team that scores the most goals by the end of the game wins. If the score is tied at the end of the game, either a draw is declared or the game goes into extra time and/or a "shootout" takes place to determine the winner, depending on the format of the competition.
The modern game was codified in England following the formation of the Football Association, whose 1863 Laws of the Game created the foundation for the way the sport is played today. Soccer is governed internationally by the Fédération Internationale de Football Association, commonly known as FIFA. The most prestigious international soccer competition is the World Cup, held every four years. The World Cup's television and Internet audience is estimated at 28 billion cumulative in-home viewers worldwide, according to Business Week magazine.
Soccer rouses powerful passions and is a valuable outlet for aggressive energy for millions of players in amateur, but highly-competitive, local soccer leagues throughout much of the world. The number of women playing the game is but a small fraction of the number of male players. Soccer players' passions can be harnessed for the purpose of building peace and have even brought war to a temporary end. Soccer fans also experience strong emotions that are expressed vigorously during the games.
Although there is tremendous good in soccer, it can be corrupted as well, especially at the professional level, through such activities as the involvement of organized crime syndicates betting on the games and bribing referees or players to throw games. Such allegations are somewhat common in Europe, but convictions are much less common. On very rare occasions, a competition involving opposing teams representing countries carrying historical grievances between them has seen the fans' passions tragically flare into uncontrolled and even deadly mob violence.
For the majority of soccer players and fans, soccer satisfies a need within them. It has been called "the beautiful game" by some, and by others it has been called the "simple game" because of the lack of equipment needed and the simplicity of its rules. Soccer is the sport of the common man that has been embraced by all. Like music, soccer is a language of the world, a passionate sport with a universal appeal. It is theater of the highest order, a mixture of art, beauty, and conflict performed on a stage where skill, athletics, and unity of mind and body is paramount. In the twenty-first century, soccer is increasingly being used as a peace building instrument both at the international level and locally for youths in areas of traditional conflict between rival groups.

Nature of the game

Football/soccer is played using a single round ball, and two teams of 11 players compete to get that ball into the other team's goal, thereby scoring a point. The primary rule of soccer is that the players (other than the goalkeeper) may not intentionally touch the ball with their hands or arms during play, except during a throw-in restart after a ball has gone out of bounds. Players usually use their feet to move the ball, but they may use any part of their bodies other than their hands or arms. Using the head is a frequently applied skill, both to block shots and passes, and in scoring goals when a ball is passed to a potential scorer through the air.
Only the goalkeeper may legally use his hands while the ball is in play.
In typical game play, players attempt to propel the ball toward their opponent's goal through individual control of the ball, such as by dribbling, passing the ball to a teammate, and taking shots at the goal, which is guarded by the opposing goalkeeper. Opposing players may try to regain control of the ball by intercepting a pass or through "tackling" the opponent who controls the ball. However, physical contact between opponents is limited. In tackling, the ball must be played first, before contact with the opposing player is made; and tripping a player without playing the ball first is a foul. Soccer is generally a free-flowing game, with play stopping only when the ball has left the field of play, or when play is stopped by the referee. After a stoppage, play recommences with a specified restart.
At a professional level, most matches produce only a few goals. For example, during the English Premier League 2005-06 season, an average of 2.48 goals per match were scored.
The Laws of the Game do not specify any player positions other than goalkeeper, but a number of soccer positions have evolved. Broadly, these include three main categories: Strikers, or forwards, whose main task is to score goals; defenders, who specialize in preventing their opponents from scoring; and midfielders, who dispossess the opposition and keep possession of the ball in order to pass it to the forwards. These positions are further differentiated by which side of the field the player usually occupies. The players other than the "goalie" may be arranged in a number of combinations. For example, there may be four defenders, four midfielders, and two forwards, known as the 4-4-2 formation; or three defenders, five midfielders, and two forwards, known as the 3-5-2 formation. The number of players in each position determines the style of the team's play. More forwards and fewer defenders would create a more aggressive and offensive-minded game, while the reverse would create a slower, more defensive style of play. While players may spend most of the game in a specific position, there are few restrictions on player movement and players can switch positions at any time. The layout of the players on the pitch is called the "team's formation," and defining the team's formation and tactics is usually the role of the team's manager or coach.

History and development

Games revolving around the kicking of a ball have been played in many countries throughout history. According to FIFA, the "very earliest form of the game for which there is scientific evidence was an exercise… dating back to the second and third centuries B.C.E. in China." In addition, the Roman game Harpastum may be a distant ancestor of soccer. Various forms of soccer were played in medieval Europe, although rules varied greatly by both period and location. The sophisticated form of modern soccer originated in Great Britain.
While soccer has continued to be played in various forms throughout Britain, the English public schools (fee-paying schools) are widely credited with certain key achievements in the creation of modern soccer and rugby. The evidence suggests that during the sixteenth century, Richard Mulcaster, the principal of Merchant Taylors' School in London, was instrumental in transforming soccer from a violent "mob" sport into an organized team competition considered beneficial to schoolboys. The game soon became institutionalized, regulated, and part of a larger tradition. Finally, in the nineteenth century, teachers and former students wrote down formal rules of early modern soccer to enable matches to be played between schools. The rules of soccer as they are codified today are effectively based on these efforts.
Sketches of the first international soccer/football match, between England and Scotland in 1872
The first known set of soccer rules was written at Eton College in 1815. The Cambridge Rules were first drawn up at Cambridge University in 1848. These and other efforts contributed to the formation of The Football Association (FA), which first met on the morning of October 26, 1863, at the Freemason's Tavern on Great Queen Street in London. The Freemason's Tavern was the setting for five more meetings between October and December, which eventually produced the first comprehensive set of rules.
Paul Gardner, in his landmark book, The Simplest Game: The Intelligent Fan's Guide to Soccer,writes: "If there is a date marking the birthday of soccer, then it is December 8, 1863. The day the F.A. published its first set of rules—the day the F.A. banned running with the ball and hacking." At the final meeting, the representative from Blackheath withdrew his club from the FA over the inclusion of these rules. Other English rugby clubs followed suit, and would not join the FA. Instead, in 1871, they formed the Rugby Football Union. The 11 remaining clubs, under the leadership of Ebenezer Cobb Morley, went on to ratify the original 13 laws of the game.
The world's oldest football competition is the FA Cup, which was founded by C. W. Alcock and has been contested by English teams since 1872. The first official international soccer match also took place in 1872, between Scotland and England in Glasgow, again at the instigation of C. W. Alcock. England is home to the world's first soccer league, which was founded in 1888, by William McGregor, the director of Birmingham-based team, Aston Villa.The original format of the league contained 12 clubs from the Midlands and the North of England.
The Laws of the Game are currently determined by the International Football Association Board (IFAB), formed in 1886,after a meeting in Manchester of The Football Association, the Scottish Football Association, the Football Association of Wales, and the Irish Football Association.
The Fédération Internationale de Football Association FIFA, the international governing body of soccer, was formed in Paris in 1904, declaring that it would adhere to the Laws of the Game published by the FA. The growing popularity of the international game led to the admittance of FIFA representatives to the International Football Association Board in 1913. The board currently consists of four representatives from FIFA and one representative from each of the four British associations.

Arrival in America

Soccer reached America with the Puritans and other early settlers. The first soccer club established outside Great Britain was the Oneida Football Club, formed near Boston in 1862. Soccer was the main sport of the Ivy League universities before they started playing American gridiron football. The first ever intercollegiate college football game, held in 1869 between Princeton and Rutgers, was a soccer game played according to the English Football Association rules. For the next three years, "the dribbling or kicking game" was played at Princeton, Columbia, Yale, and Rutgers. Harvard was undecided between the "dribbling game" and the "handling game," the latter of which was played in England as rugby.
In 1874, the Harvard team traveled to McGill University in Montreal, to play two games, the first under soccer rules with a round ball and the second under rugby rules with an egg-shaped ball. Harvard easily won the first game but was held to a tie in the second. However, the "handling game" so impressed the Harvard men that they adopted the rugby rules. Before long, Harvard had converted the other American colleges to its new game, which gradually was fashioned into the American gridiron football of today.
The first battle to implant soccer in America may have been lost, but soccer did not disappear. Leagues formed on the Eastern Seaboard and in St. Louis, with teams such as the Brooklyn Celtics, Spanish-American F.C., and Anglo-Saxon F.C. Ethnic Americans continued to play the sport of their homeland and forefathers and the United States sent a team to the first-ever World Cup and also appeared in the 1938 contest. In 1994, the United States hosted the World Cup.

The world's game

Map showing the popularity of soccer around the world. Countries where soccer is the most popular sport are colored green, while countries where it is not are colored red. The various shades of green and red indicate the number of players per 1,000 inhabitants.
Today, soccer is played at a professional level all over the world, and millions of people regularly go to soccer stadiums to follow their favorite team. A very large number of people also play soccer at an amateur level. According to a 2001 FIFAsurvey, over 240 million people regularly play soccer in more than 200 countries, in every part of the world. Soccer's simple rules and minimal equipment requirements have aided its spread and growth in popularity. In many parts of the world soccer evokes great passions and plays an important role in the life of individual fans, local communities, and even nations. It is considered to be the most popular sport in the world.
Soccer has often been a force for peace and reconciliation. In 2002, longtime enemiesJapan and South Korea successfully played host to the World Cup. Old rivals Hollandand Belgium played host to the 2000 European Championship, and even ancient enemies, Greece and Turkey made a bid—albeit unsuccessful—to play host to 2008 European Championship.
Soccer has even stopped wars. On Christmas Day 1914, German and British troops on the front lines during World War I put down their guns, came out of their muddy trenches, and played a soccer game. According to one soldier's diary report, the Germans won 3-2. In 1969, Brazilian star Pele's trip to Nigeria with his club, Santos, produced a three-day cease-fire in the Biafran War. In 1990, rival factions in the Lebanon War took time out from killing each other to watch World Cup games beamed in from Italy. It was widely reported that theCôte d'Ivoire national soccer team helped secure a truce to the nation's religiously based civil war in 2005 after a team, consisting of both Christians and Muslims, qualified for the World Cup.
However, passions for the game can also result in riots between the fans of supporting rival teams, sometimes reaching the international level. Soccer is widely considered to have been the cause of the so-called Football War in June 1969, between El Salvador andHonduras. The sport also exacerbated tensions at the beginning of the Yugoslav Wars of the 1990s, when a match between Red Star Belgrade and Dinamo Zagreb devolved into rioting, in March 1990.

Laws of the game

There are 17 rules in the official Laws of the Game. The same rules are designed to apply to all levels of soccer, although certain modifications for groups such as juniors, seniors, or women are permitted. The laws are often framed in broad terms, which allow flexibility in their application depending on the nature of the game. In addition to the 17 laws, numerous IFAB decisions and other directives contribute to the regulation of football. The laws can be found on the official FIFA website.

Players, equipment, and officials

Football is popular among children as well as adults.
Each team is allowed a maximum of eleven players, excluding substitutes, one of whom must be the goalkeeper. Competition rules may state a minimum of seven players are required to constitute a team. However, informal neighborhood "pickup" games are often played with less. Goalkeepers are the only players allowed to play the ball with their hands or arms, but they are allowed to do so only within the "penalty area" in front of their own goal. Though there are a variety of positions in which the outfield (non-goalkeeper) players are strategically placed by a coach, these positions are not defined or required by the Laws.
The basic equipment (kit) players are required to wear includes a shirt, shorts, socks, footwear, and adequate shin guards. Players are forbidden to wear or use anything that is dangerous to themselves or another player, including jewelry or watches. The goalkeeper must wear clothing that is easily distinguishable from that worn by the other players and the match officials.
A number of players may be replaced by substitutes during the course of the game. The maximum number of substitutions permitted in most competitive international and domestic league games is three, though the number may be varied in other leagues or in "friendly" matches. Common reasons for a substitution include injury, fatigue, ineffectiveness, or a tactical switch. In standard adult matches, a player who has been substituted may not take further part in the match.
A game is officiated by a referee, who has "full authority to enforce the Laws of the Game in connection with the match to which he has been appointed" (Law 5), and whose decisions are final. The referee is assisted by two assistant referees. In many high-level games there is also a fourth official (and in the World Cup a fifth official), who assist(s) the referee and may replace another official should the need arise.

Pitch

Standard pitch measurements
The length of the pitch specified for international adult matches is in the range of 110-120 yards and the width is in the range of 70-80 yards. Fields for non-international matches may be 100-130 yards in length and 50-100 yards in width, provided that the pitch does not become square. The longer boundary lines are "touchlines" or "sidelines," while the shorter boundaries (on which the goals are placed) are "goal lines." On the goal line at each end of the field a rectangular goal is centered. The inner edges of the vertical goal posts must be eight yards apart, and the lower edge of the horizontal crossbar supported by the goal posts must be eight feet above the ground. Nets are usually placed behind the goal, but are not required by the Laws.
In front of each goal is an area of the field known as the penalty area, often referred to as the "18-yard box" or simply "the box." This area is marked by the goal-line, two lines starting on the goal-line 18 yards from the goalposts and extending 18 yards into the pitch perpendicular to the goal-line, and a line joining them. This area has a number of functions, the most prominent being to mark where the goalkeeper may handle the ball and where a penalty foul by a member of the defending team becomes punishable by a penalty kick—awarding an unobstructed free kick toward the goal from a distance of 11 meters. The field has various other markings and defined areas.

Duration and tie-breaking methods

Fourth official signals a substitution.
A standard adult football match consists of two periods lasting 45 minutes each, known as halves. There is usually a 15-minute "half-time" break between them. The end of the match is known as full-time. Each half runs continuously, meaning that the clock is not stopped when the ball is out of play. The referee is the official timekeeper for the game, and may make an allowance for time lost through substitutions, injured players requiring attention, or other stoppages, such as players trying to "waste time." This added time is commonly referred to as "stoppage time," "extra time," or "injury time," and is at the sole discretion of the referee. The referee alone signals the end of the match. In matches where a fourth official is appointed, near the end of the half the referee signals how many minutes of stoppage time he intends to add, and the fourth official then informs the players and spectators by holding up a board showing this number. The signaled stoppage time may be further extended by the referee.
In league competitions, games may end in a draw, but in some competitions, it may go into extra time, consisting of two additional 15-minute periods. If the score is still tied after extra time, some competitions allow the use of penalty shootout (known officially in the Laws of the Game as "kicks from the penalty mark") to determine which team will progress to the next stage of the tournament. Goals scored during extra time periods count toward the final score of the game, but kicks from the penalty mark are only used to decide the team that progresses to the next part of the tournament, with goals scored in a penalty shootout not making up part of the final score. In international games, a penalty-shoot win is listed as a tie in the record book.
Competitions held over two "legs"—meaning two games in which each team plays at home once—may use the "away goals" rule to determine which team progresses in the event of equal aggregate scores. If the result is still equal following this calculation, kicks from the penalty mark are usually required.
In the late 1990s, the International Football Association Board experimented with ways of making games more likely to end without requiring a penalty shootout, which was often seen as an undesirable way to end a match. These involved rules ending a game in extra time early, either when the first goal in extra time was scored, known as the "Golden Goal," or when one team held a lead at the end of the first period of extra time, known as the "Silver Goal." The Golden Goal was used at the 1998 World Cup in France and the 2002 World Cup hosted by Japan and South Korea. At the European Championship of 1996, Germany was the first nation to score a Golden Goal in a major international competition, beating the Czech Republic in the final. The silver goal was used in Euro 2004 in Portugal. Both these experiments have been discontinued by IFAB.

Ball in and out of play

Under the Laws, the two basic states of play during a game are "ball in play" and "ball out of play." From the beginning of each playing period with a kick-off (a set kick from the center-spot by one team), until the end of the playing period, the ball is in play at all times, except when either the ball leaves the field of play, or play is stopped by the referee. When the ball becomes out of play, play is restarted by one of eight restart methods depending on how it went out of play:
A player attempts a penalty kick during the 2006 World Cup.
  • Kick-off: Following a goal by the opposing team, or to begin each period of play.
  • Throw-in: When the ball has wholly crossed the touchline; awarded to the team which was not last to touch the ball.
  • Goal kick: When the ball has wholly crossed the goal line without a goal having been scored and having last been touched by an attacker; awarded to defending team.
  • Corner kick: When the ball has wholly crossed the goal line without a goal having been scored and having last been touched by a defender; awarded to attacking team.
  • Indirect free kick: Awarded to the opposing team following "non-penal" fouls, technical infringements, or when play is stopped to caution or send off an opponent. A goal may not be scored directly from an indirect free kick.
  • Direct free kick: Awarded to fouled team following certain listed "penal" fouls. Opposing players are entitled to obstruct a direct free kick from a distance of approximately ten yards from the spot of the kick.
  • Penalty kick: Awarded to the fouled team following a "penal" foul within its opponent's penalty area, consisting of a direct, unobstructed free kick to the goal from 11 meters away.
  • Dropped-ball: Occurs when the referee has stopped play for any other reason (e.g., a serious injury to a player, interference by an external party, or a ball becoming defective). This restart is uncommon in adult games.

Fouls and misconduct

Players in red line up for a direct free kick, while opposing players prepare to obstruct it.
A foul occurs when a player commits a specific offense listed in the Laws of the Game while the ball is in play. The offenses that constitute a foul are listed in Law 12. Handling the ball, tripping an opponent, pulling an opponent's jersey, and pushing an opponent are examples of "penal fouls," punishable by a direct free kick or a penalty kick depending on where the offense occurred. Non-penal fouls are punishable by an indirect free kick, meaning that the player must pass the ball rather than shooting it directly toward the goal.
For serious or intentional fouls, a referee may punish a player with a caution (yellow card) or sending-off (red card). A second yellow card in the same game leads to a red card, and therefore to a sending-off. Misconduct may occur at any time, and while the offenses that constitute misconduct are listed, the definitions are broad. In particular, the offense of "unsporting behavior" may be used to deal with most actions that violate the spirit of the game, even if they are not listed as specific offenses. Non-players, such as managers and support staff, may be dismissed from the field and its surrounds by the referee if they fail to conduct themselves in a responsible manner. After being sent off, a player may not be replaced, resulting in the offending team playing at a one-man disadvantage.
Rather than stopping play when a foul occurs, the referee may allow play to continue when its continuation will benefit the team against which the offense has been committed. This is known as the "advantage rule." The referee may call back play and penalize the original offense if the anticipated advantage does not ensue within a short period of time. Even if an offense is not penalized because the referee plays an advantage, the offender may still be sanctioned with a yellow card or red card at the next stoppage of play.
The "offside" law effectively limits the ability of attacking players to remain forward (i.e. closer to the opponent's goal-line) of the ball when the attacker is also forward of the second-to-last defending player including the goalkeeper, and past beyond the field's half-way line.

Governing bodies

The recognized international governing body of soccer (and associated games, such as beach soccer) is the Fédération Internationale de Football Association FIFA. FIFA's headquarters is located in ZürichSwitzerland.
Six regional confederations are associated with FIFA; these are:
  • Asia: Asian Football Confederation (AFC)
  • Africa: Confederation of African Football (CAF)
  • Central/North America & Caribbean: Confederation of North, Central American and Caribbean Association Football (CONCACAF; also known as The Football Confederation)
  • Europe: Union of European Football Associations (UEFA)
  • Oceania: Oceania Football Confederation (OFC)
  • South America: Confederación Sudamericana de Fútbol (South American Football Confederation; CONMEBOL)
The recognized national associations oversee football within their jurisdictions. These are affiliated both with FIFA directly and also with their respective continental confederations.

International competitions

German captain, Philipp Lahm lifts the 2014 FIFA World Cup
The major international competition in football is the World Cup, organized by FIFA. This competition takes place over a four-year period. More than 190 national teams compete in qualifying tournaments within the scope of continental confederations for a place in the finals. The finals tournament, which is held every four years, involves 32 national teams competing over a four-week period. The 2006 FIFA World Cup took place in Germany and its 2010 venue is South Africa.
A soccer tournament has been played at all the Summer Olympic Games since 1900, except at the 1932 Summer Olympics held in Los Angeles. Before the inception of the World Cup, the Olympics (especially during the 1920s) had the same status as today's World Cup. Originally, the event was for amateurs only, however, since the 1984 Summer Olympics, professionals have been permitted as well, albeit with certain restrictions which effectively prevent countries from fielding their strongest sides. Currently, the Olympic men's tournament is played at the under-23 level. A women's tournament was added in 1996 and in contrast to the men's event, the women's Olympic tournament is played by full international sides without age restrictions. It thus carries international prestige comparable to that of the FIFA Women's World Cup.
Aside from the World Cup and the Summer Olympic Games, national level teams have few other opportunities for international level competition. They do, however, have active competition for continental championships organized by each continental confederation. These are the European Championship (UEFA)—Europe, the Copa América (CONMEBOL)—South America, African Cup of Nations (CAF)—Africa, the Asian Cup (AFC)—Asia, the CONCACAF Gold Cup (CONCACAF)—North, Central America and Caribbean, and the OFC Nations Cup (OFC)—Oceania.
At the club level, two of the most highly regarded competitions traditionally are those for the championship of the UEFA Champions League in Europe and the Copa Libertadores de América in South America. Until 2005, the most prestigious club championship was the Intercontinental Cup, which was also known as the Toyota Cup and was played annually in Japan. It was contested by the winning club of the European Champions League and the winner of the Copa Libertadores. Due to the growing interest of people from Africa, North America, and Asia in club-level football, this championship in 2005 became a part of the new FIFA Club World Championship, a tournament between the club championship winners from each of the six FIFA confederations. The new tournament is also held in Japan annually up through 2008, with bidding opening for the 2009 host site.

A peace-building game

The possibility of using soccer as a peace-building instrument has been recognized for at least a century and the impulse continues to emerge independently, among individuals and groups in different parts of the world. The Peres Center for Peace organizes soccer matches between top-ranked international teams and a joint Israeli-Palestinian team, while a different Soccer for Peace program organizes soccer competitions between Arab and Jewish children in Israel. The latter is a joint undertaking of the Maccabim Association and the Kibbutz Barka’i Center for Soccer, Peace, and Coexistence. A Soccer for Peace program organized out of Emory University in Atlanta, Georgia, sends soccer equipment to such places as Darfur, so peacekeepers and refugees can play soccer together.
Starting in 2006, national women's teams have had the possibility of entering the Peace Queen Cup, a competition held in South Koreaand involving eight women's national teams representing five continents. The first tournament is scheduled to be held once every two years. The Peace Queen Cup is a companion program to the World Peace Cup, an international level competition involving eight of the world's top-ranked club teams, also competing in Korea. The World Peace Cup and Peace Queen Cup are scheduled in alternate years. Organized by the Sunmoon Peace Football Foundation, the pair of international competitions represent an effort to harness the energy and goodwill of football to promote the unity of humankind and help realize a world of peace. Proceeds from the tournaments are contributed to the World Organization of NGOs (WANGO) in support of its "Play Soccer, Make Peace" program, which organizes and supports local soccer competitions among youth from traditionally opposing groups in more than 30 countries.

Domestic competitions

A match in Hamburg, Germany, May 2004.
The governing bodies in each country operate league systems, normally comprising several divisions, in which the teams gain points throughout the season depending on results. Teams are placed into tables, putting them in order according to points accrued. Most commonly, each team plays every other team in its league at home and away in each season, in a round-robin tournament. At the end of a season, the top team is declared the champion, and the top few teams may be promoted to a higher division, while one or more of the teams finishing at the bottom are relegated to a lower division. For example, in the English Premier League (EPL), the bottom three teams drop down into the second division, while the top three teams move up to the EPL.
The teams finishing at the top of a country's league may also be eligible to play in international club competitions in the following season. One exception to this system occurs in some Latin American leagues, which divide championships into two sections named Apertura and Clausura (opening and closing), awarding a champion for each. Another exception is Major League Soccer in the United States, which has a playoff system.
In addition to a league system, most countries operate one or more cup competitions during the season. These are organized on a knock-out basis, the winner of each match proceeding to the next round, while the loser is eliminated.
Some countries' top divisions feature highly-paid star players, but in smaller countries and lower divisions, players may be part-timers with a second job, or amateurs. Top players from nations where soccer is not a well-developed sport gravitate to the higher-paying clubs. The five top European leagues—the English Premier League, the Bundesliga, La Liga, Ligue 1, and Serie A—attract most of the world's best players. Manchester United in the EPL and Real Madrid in La Liga, are two of the biggest clubs in the world.
The dedicated fan base of soccer that has supported the spread of club football from its home in Europe to South America and then to the other continents, has also attracted corporate and governmental support both for soccer clubs and for competitions between clubs. In South Korea, for example, club soccer is a major business investment with corporations like Samsung, Hyundai, LG, Ilhwa, and SK each supporting their own club team since the 1980s. Starting in 1997, cities including Daejeon, Daegu, Incheon, and Gyeongnam also have each launched their own club team. Historical restrictions on the number of foreign players in a club's team have been largely eliminated by the Bosman ruling, a 1995 European Court of Justice decision that allowed soccer players to move freely to another club at the end of their term of contract with their present team.

Modular phone -Project ARA by Google

A modular smartphone is assembled from discrete parts, the so-called “modules”. The underpinning idea is to upgrade or replace the phone’s parts individually according to user’s needs and preferences. Such parts might include a camera, processor, internal storage, battery, screen and all kinds of sensors. This may save a lot of money to consumers, because modular phone users won’t need to buy a new device to keep up with the trend.
A modular phone concept started to gain popularity after a Dutch designer Dave Hakkens announced Phonebloks concept in September 2013. The name Phonebloks was adopted as a reference to Lego-like blocks that users could easily construct and change.
Phonebloks
What is Project Ara?
About the same time or a little earlier when Phonebloks was announced by Dave Hakkens, the concept of modular phone picked up steam and was developed by Motorola’s Advanced Technology and Projects (ATAP) group owned by Google and managed by Regina Dugan, the former director of the Defense Advanced Research Projects Agency (DARPA) (recently Regina left Google to join Facebook). In the second half of 2014 Google sold Motorola to Lenovo, but retained the ATAP group as well as all its patents. Nowadays, mostly everything related to modular phones is associated with the project dubbed Ara, developed by Google.
By now Ara is no longer an experimental part of ATAP, it has just become an independent division within Google. This points to real business potential and serious plans about this project. According to Wired, about 30 people at Google are already using Ara as their daily smartphone.
Why “Ara”?
The previous version of the official website said: “As it turns out, our lead mechanical designer is named Ara. And we like him. And we also like his name. So we named the phone Ara. We hope you like it too.”
How does Ara phone look like? How does it work?
Initially Ara phone was supposed to consist of an aluminum frame with the slots for modules, attached to the endo via electropermanent magnets. Modules, like display, receiver, microphone were supposed to be attached to the front of the endo. Other functional modules, like camera, processor, battery, Wi-Fi, Bluetooth, NFC, etc. – to the rear side of the endo.
But now, after Google’s I/O 2016, the company announced that the screen, antennas, CPU, and battery are to be locked into the base frame. This change is based on several reasons. Integrating key components into the base frame of the phone leaves more room for other modules and saves a lot of design troubles. Also, according to the Ara team research, most people don’t care, or don’t even know which processor they have. Today, once the most smartphones have advanced specs, people don’t require more speed or memory, but more hardware functions.
Project Ara
Project Ara
A shape-shifting nitinol memory alloy will be used instead of electropermanent magnets (as planned earlier) to handle the modules in the corresponding slots. When a current passes, the connectors contract, and the connection becomes robust. Also, it can be controlled electronically with the help of software (special application or by saying “Okay Google, eject the camera”). Nitinol memory alloy connectors take less space inside the module, allowing developers more to work with.
Nitinol memory alloy connectors for Project Ara modules
What is the size of Ara phone?
Initially the Ara phone was supposed to have three sizes: small – 45x118x9.7mm (about the size of classic Nokia 3310); medium – 68x141x9.7mm (about the size of Samsung Galaxy S5); big – 91x164x9.7mm (slightly bigger than iPhone 6 Plus).
Now we know that dimentions will differ, but Google hasn’t finalized the exact specs, although it’s known that the screen size is 5.3 inches.
What are sizes and functionalities of the Ara modules?
Ara modules are standardized, meaning the user can plug any module into any slot where it fits. The frame contains six slots, and the modules have shape of 1×2 rectangles or 2×2 squares.
In the promo video, released by Google recently, we see a variety of modules:
– e-ink display for notifications or glanceable information;
– camera modules with different lenses and/or sensors;
– speaker and microphone arrays;
– a kickstand;
– programmable touch-sensitive module;
– nonfunctional “style” modules;
– fingerprint reader.

For sure, in future we will see many more modules with different functinalities and various features.

Project Ara modules
Which operating system will be used in Ara phone? Will it be compatible with different OS?
According to ATAP, modular Ara phone will work on Android. For now Google has no plans to expand their phone compatibility to Windows, Symbian or any other OS.
Is it possible to take out or insert modules without turning off the Ara phone?
The Ara platform is designed to let hot-swapping of modules, without shutting the power. For example, it’s possible to slide out a camera and replace it with a battery whenever you need.

Android application for Project Ara to hot-swap modules
When will Ara phone be released?
A year and a half ago at Ara developers conference, Google announced that the Ara phone market pilot would be released in Puerto Rico at the end of 2015. Special trucks, similar to food trucks, would deliver phones and modules to users in different localities and neighbourhoods within Puerto Rico.
Now we know that plans have changed. After more than a year of silence Google revealed new schedule. Developer kits will be shipped during the 4th quarter of 2016. The first consumer-ready modular phones will be available in 2017, probably in different countries.
How much will it cost?
The latest info about the price was received pretty long time ago, over a year. A lot has changed since then. At the time it was announced that the cheapest base version of the Ara phone was set at about $50-$100. Individual modules would vary in price from $10 to $300 or even higher, depending on module functionality.
Now, with processor, RAM and memory included into the base frame, we estimate that the frame might be priced at $150-$250, the modules will still have a very broad price range.
Which companies are already developing modules?
Among previously confirmed companies are Toshiba (camera, display, activity measurement and other modules), Vestigen (health modules), Yezz (wide range of modules with different functionalities), InnoLux (display module), Phison in partnership with Kingston (data storage modules), Intersoft Eurasia (radiation sensor module), Sennheiser (audio modules).
Some of them might drop out along the way, but by now we could see even more heavyweights, such as Panasonic, TDK, Wistron, E-Ink, Toshiba, Harman, Samsung, Sony Pictures, and some health companies.

Shardul Kazi, Senior Vice President from Toshiba America, presents 5 Mpx camera module for Ara phone
How will the modules be distributed?
Google aims to make Project Ara a hardware analog of Android. Google works to make mobile hardware ecosystem similar to the mobile applications ecosystem. For this purpose Google will develop Ara Marketplace. It is an e-commerce platform for connecting module developers and customers.
To protect against counterfeits, Google will have its own certification program for Ara modules, and Ara phones will reject ones that don’t pass approval.

Monday, July 4, 2016

Sensors used in normal and Autonomous car

With the advent of Advanced Driver Assist Systems (ADAS) systems and the drive towards autonomous vehicles, automobiles need to be aware of their surroundings.  Drivers are able to sense our surroundings, make judgments and react quickly to a variety of conditions.  However, we are not perfect. We get tired, distracted and make mistakes.  In order to improve safety, automobile manufacturers are designing ADAS into cars.  Automobiles rely on a variety of sensors for awareness of their surroundings under a multitude of different conditions.  This data is then passed on to highly sophisticated processors such as TI’s TDA2x, to be used for functions such as Automatic Emergency Braking (AEB), Lane Departure Warning (LDW) and Blind Spot Detection.
There are several types of sensors commonly used for awareness. Passive sensors – Used to sense radiation reflected or emitted from objects. 
  • Visible image sensors – all imagers operating in the visual spectrum
  • Infra-red image sensor – operate outside of the visual spectrum.  These can be NIR or Thermal (Far IR)
Passive sensors are affected by the environment – time of day, weather etc.  Eg.  Visible sensors are affected by the amount of visible light available at different times of the day.
Active sensors – emit radiation and measure the response of reflected signals.  Advantages are the ability to obtain measurements anytime, regardless of the time of day or season.
  • Radar-  emits radio waves that bounce off an object to determine it’s range, direction, and speed
  • Ultrasonic- emits ultrasonic sound waves that bounce off an object to determine it’s range
  • Lidar- scans an infrared laser that bounces off an object to determine the range
  • Time of Flight- a camera that measures the time it takes for an emitted infrared light beam to bounce off an object and return to the sensor to determine it’s range
  • Structured Light- a known light pattern is projected onto an object, usually by a TI DLP.  The deformation of this pattern is captured by a camera and analyzed to determine distance
To provide the increased accuracy, reliability and robustness under a wide variety of conditions, more than one type of sensor are often needed to be used to view the same scene.  All sensor technologies have their inherent limitations and advantages.  Different sensor technologies can be combined to provide a more robust solution by fusing the data from different sensors looking at the same scene, “Fusion eliminates confusion”. One example, is the combination of visible sensors and radar.
Visible sensors advantages include high resolution, ability to identify and classify objects, as well as providing vital intelligence.  However their performance is affected by amount of available light and weather conditions (such as fog, rain and snow).  Additional factors such as heat result in image degradation due to noise. Sophisticated image processing available on TI processors can mitigate some of this.
Radar, on the other hand, can see through fog rain or snow, and can measure distance very quickly and effectively. Doppler radar has the added advantage of being able to detect the motion of objects.   However, radar is lower resolution and cannot easily identify objects.  The fusion of visible and radar data provides a solution that is much more robust under a wide variety of conditions.
Also, the cost varies between different sensors, which influence the best choice for a particular application. For example, laser radar (LIDAR) provides very accurate distance measurement but is more expensive than a passive image sensor.  As development continues, costs will decrease and eventually cars will rely on a whole variety of sensors to become aware of their environment.
The TDA family of processors are highly integrated and developed on a programmable platform that meets the intense processing needs of ADAS-enabled automobiles.  Data from different sensors looking at the scene can be fed into the TDA2x and combined into a more complete picture that allows quick and intelligent decision making.  For example, a visual sensor may show a mailbox that looks like a human in dusk conditions.  The TI processor can perform sophisticated pedestrian detection that, based on the proportions of the object, may identify it as a possible human by the side of the road.  However, data from a thermal sensor would identify the object as too cold to be alive and therefore probably not a human.  Therefore, different sensors operating at different modalities provide an added level of safety.
The ultimate goal is creating completely autonomous cars that drive themselves with the ultimate goal of a world without traffic fatalities.  TI is actively working on sensor and processing technologies to aid customers in developing the autonomous vehicle.  In time, however, these problems shall be solved and I am confident that when it comes to autonomous cars, the question is not “if” we shall get there but “when.”

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