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A screensaver is a computer program that blanks the screen or fills it with moving images or patterns when the computer has been idle for a long time. The original purpose of screensavers was to prevent phosphor burn-in on CRT and plasma computer monitors. Though modern monitors are not susceptible to this issue, screensavers are still used for other purposes. Screensavers are set up to offer a basic layer of security, by requiring a password to re-access the device; some screensavers use the otherwise unused computer resources to do useful work, such as processing for distributed computing projects. As well as computers, modern television operating systems, media players and other digital entertainment systems include optional screensavers. Before the advent of LCD screens, most computer screens were based on cathode ray tubes; when the same image is displayed on a CRT screen for long periods, the properties of the exposed areas of phosphor coating on the inside of the screen and permanently change leading to a darkened shadow or "ghost" image on the screen, called a screen burn-in.

Cathode ray televisions and other devices that use CRTs are all susceptible to phosphor burn-in, as are plasma displays to some extent. Screen-saver programs were designed to help avoid these effects by automatically changing the images on the screen during periods of user inactivity. For CRTs used in public, such as ATMs and railway ticketing machines, the risk of burn-in is high because a stand-by display is shown whenever the machine is not in use. Older machines designed without burn-in problems taken into consideration display evidence of screen damage, with images or text such as "Please insert your card" visible when the display changes while the machine is in use. Blanking the screen is out of the question as the machine would appear to be out of service. In these applications, burn-in can be prevented by shifting the position of the display contents every few seconds, or by having a number of different images that are changed regularly. CRTs were much less susceptible to burn-in than older models due to improvements in phosphor coatings, because modern computer images are lower contrast than the stark green- or white-on-black text and graphics of earlier machines.

LCD computer monitors, including the display panels used in laptop computers, are not susceptible to burn-in because the image is not directly produced by phosphors. While modern screens are not susceptible to the issues discussed above, screensavers are still used; these are for decorative/entertainment purposes, or for password protection. They feature moving images or patterns and sometimes sound effects; as screensavers are expected to activate when users are away from their machines, many screensavers can be configured to ask users for a password before permitting the user to resume work. This is a basic security measure against another person accessing the machine while the user is absent; some screensavers activate a useful background task, such as a virus scan or a distributed computing application. This allows applications to use resources only. Decades before the first computers using this technology were invented, Robert A. Heinlein gave an example of how they might be used in his novel Stranger In A Strange Land: Opposite his chair was a stereovision tank disguised as an aquarium.

The first screensaver was written for the original IBM PC by John Socha, best known for creating the Norton Commander. The screensaver, named scrnsave, was published in the December 1983 issue of the Softalk magazine, it blanked the screen after three minutes of inactivity. By 1983 a Zenith Data Systems executive included "screen-saver" among the new Z-29 computer terminal's features, telling InfoWorld that it "blanks out the display after 15 minutes of nonactivity, preventing burned-in character displays"; the first screensaver that allowed users to change the activating time was released on Apple's Lisa, in 1983. The Atari 400 and 800's screens would go through random screensaver-like color changes if they were left inactive for about 8 minutes. Normal users had no control over this; these computers, released in 1979, are technically earlier "screen savers." Prior to these computers, games for the 1977 Atari VCS/2600 gaming console such as Combat and Breakout, included color cycling in order to prevent burn-in of game images into 1970s-era televisions.

In addition, the first model of the TI-30 calculator from 1976 featured a screensaver, which consisted of a decimal point running across the display after 30 seconds of inactivity. This was chiefly used to save battery power, as the TI-30 LED display was more power intensive than LCD models; these are examples of the firmware of a computer. Today with the help of modern graphics technologies there is a wide variety of screensavers; because of 3D computer graphics, which provide realistic environments, 3D screensavers are available. Screensavers are designed and coded using a variety of programming languages as well as graphics interfaces; the authors of screensavers use the C or C++ programming languages, along with Graphics Device Interface, such as OpenGL

Šuica (river)

The River Šuica is a sinking river flowing through Duvanjsko Polje and the wider region of Tropolje in Bosnia and Herzegovina. The river runs through its subterranean section, which begins at the point where river goes underground within the main estavelle at Kovači; this section of the Šuica is traversable for trained speleologists with proper equipment. Its sources are Mali Veliki Stržanj, both close to village of Stržanj, it flows through and drains most of its waters from Kupreško Polje, the Šuica Valley and Duvanjsko Polje. The river disappears underground in large Kovači estavelle, eponymous of nearby village Kovači, in southwestern corner of Duvanjsko Polje. Waters of the Šuica than re-emerges at the source of Ričina in village Prisoje, which than empties into the reservoir of Buško Blato after a short flow of cca 0–50 meters, depending on the water levels in reservoir

Dodô (footballer, born 1992)

José Rodolfo Pires Ribeiro known as Dodô, is a Brazilian professional footballer who plays as a left back in Italy for Sampdoria. Born in Campinas, São Paulo, Dodô joined Corinthians' youth setup in 2007. In July 2009 he was promoted to the main squad by manager Mano Menezes, as a replacement to departing André Santos, he acted as a backup to Roberto Carlos. In May 2009 Dodô was linked with a future transfer to English club Manchester United to be completed in February 2010, he was spotted during the South American Under-17 championship. Dodô made his first team – and Série A – debut on 15 November 2009 at the age of 17, coming on as a second-half substitute for Diego Sacoman in a 3–1 away loss against Avaí. After Mano's dismissal, he was used by new managers Adílson Batista and Tite. In December 2010, Dodô and Corinthians teammate Boquita joined Bahia on loan for a year, he scored his first senior goal on 27 March 2011, netting the second in a 3–0 Campeonato Baiano home win against Bahia de Feira.

Dodô scored his first Série A goal on 4 September 2011, his team's second in a 3–1 away defeat of Flamengo. A regular starter during the stages of the season, he suffered a knee injury on 16 November in a 1–0 away loss against Internacional, was sidelined for six months. On 2 July 2012, Dodô joined Serie A side Roma in a five-year contract, he made his debut on 28 October in a 2–3 loss against Udinese. He started the match and was substituted for compatriot Marquinhos, he finished the season with 11 appearances. Dodô found more first team football in the 2013–14 season, with first team left back Federico Balzaretti missing much of the season through injury. Dodô made 20 appearances in all competitions over the course of the season, helping Roma to a 2nd-place finish. On 8 July 2014, it was announced that Dodô would be joining Serie A rivals Inter on a two-year loan for a fee of €1.2 million, with a conditional obligation for a fee of €7.8 million which would be activated by Dodô's first appearance in the senior team's official matches.

He made his official debut with Inter on 20 August 2014 in first leg of Europa League play-off, where he scored the second goal of the 3–0 away win against Icelandic side Stjarnan. On 31 August, he debuted in Inter's first match of the 2014–15 Serie A away to Torino, playing 80 minutes at left back in a goalless draw before being substituted for Danilo D'Ambrosio. Dodô opened the scoring in Inter's UEFA Europa League group stage match away to AS Saint-Étienne on 6 November 2014, an eventual 1–1 draw. On 21 January 2016, Dodô underwent a medical for a loan move to Sampdoria; the loan deal, set to expire on 30 June 2016, was finalized that day. After playing twice for Inter in 2016 pre-season under Mancini, he was left out from the squad to the United States, he did not receive any call-up from Frank de Boer either. On 18 August 2016, Dodô returned to Sampdoria on loan with an obligation to buy in 2018. On 22 February 2018, Dodô returned to his home country after agreeing to a one-year loan contract with Santos.

He made his debut for the club on 7 March, starting in a 2–1 Campeonato Paulista away loss against Grêmio Novorizontino. Dodô and his Inter teammate Juan Jesus were called up to the Brazil national football team for friendlies against Argentina and Japan in October 2014, they were both unused substitutes in the first match in Beijing, a 2–0 victory for the 2014 Superclásico de las Américas. Dodô is described as a geek, due to being a fan of video games, comic books and eSports; as of 22 April 2019

Fanshawe Dam

Fanshawe Dam is a dam located on North Thames River the eastern edge of London, Ontario. The crest of the dam is 625 metres long, it drops the river surface 12 metres. Fanshawe Lake is the reservoir created by the dam; the hydroelectric generator of the Fanshawe Dam generates enough power to run 400 households. It is one of three dams on its tributaries. After repeated floods, the Upper Thames River Conservation Authority built the dam to control the level of the Thames River, it cost $5 million - Federal government 37.5%, Provincial government 37.5%, Upper Thames River Conservation Authority 25%. A seismograph is placed inside the dam by the University of Western Ontario’s geology department. List of reservoirs and dams in Canada Pittock Dam Wildwood Dam

Indian Ocean Tuna Commission

The Indian Ocean Tuna Commission is an intergovernmental organization that co-ordinates the regulation and management of tuna in the Indian Ocean. Conceived in 1993, it entered into existence in 1996. A multilateral treaty, the Agreement for the Establishment of the Indian Ocean Tuna Commission was approved by the Council of the Food and Agriculture Organization of the United Nations in November 1993; the agreement entered into force on 27 March 1996. The Agreement is open to any state that has coasts within the Indian Ocean region as well as any state that fishes for tuna in the Indian Ocean region; the agreement is open to regional economic organizations. The IOTC is the successor to the Indo-Pacific Tuna Development and Management Programme, established in 1982; as of July 2016, there are 32 members of IOTC: Vanuatu was a member of the IOTC between 2012 and 2015. It chose to withdraw from the organization. IOTC headquarters are located in Seychelles. Inter-American Tropical Tuna Commission, official website Agreement for the Establishment of the Indian Ocean Tuna Commission Agreement status

Miguel Ángel Brindisi

Miguel Ángel Brindisi de Marco is an Argentine football coach and former attacking midfielder. He played for the Argentine national team at the 1974 FIFA World Cup and works as a manager. Born in the Almagro neighborhood of Buenos Aires, Brindisi played most of his career in two spells at Club Atlético Huracán, but he had spells with Spanish side UD Las Palmas, Uruguayan side Nacional and Argentine teams Boca Juniors and with Racing Club during their spell in the Second Division. Whilst at Las Palmas he helped them to the 1978 Copa del Rey Final where his goal was unable to prevent them losing 3-1 to FC Barcelona. Brindisi was part of two Argentine championship winning sides, his first title was the 1973 Metropolitano with Club Atlético Huracán. Managed by César Menotti, that squad is regarded as one of the best Argentine teams with Brindisi being a key player along with René Houseman, Carlos Babington and Omar Larrosa. After some seasons playing abroad Argentina, Brindisi was traded to Boca Juniors, where he won his second title, the 1981 Metropolitano.

Coached by Silvio Marzolini, Brindisi made a memorable duo with Diego Maradona scoring many goals for the team. Brindisi was the Argentine Primera's top scorer in the Metropolitano championship of 1972 with 21 goals. Brindisi played for the Argentina national team scoring 17 goals. Brindisi made his debut as a head coach with Club Alumni de Villa María in 1986 his next club was CSD Municipal of Guatemala, which he led to the Liga Nacional de Guatemala title in 1987 and 1988; the next club team Brindisi took charge of was Barcelona Sporting Club in Ecuador where he lad the team to the national championship in 1989 and 1991 and to the Libertadores Cup finals in 1990. He had spells in charge of RCD Espanyol and UD Las Palmas in Spain. After managing in Guatemala several years he went on to become coach of the Guatemala national team, of which he was in charge during the 1994 World Cup qualification process and on a second tenure in 1997. Brindisi took over at Club Atlético Independiente in the Primera division, he helped the club to win three titles.

Brindisi had a spell in charge of his former club and Independiente's fiercest rivals. Brindisi took over at Club Atlético Lanús in 2003 became manager of Boca Juniors in July 2004, but resigned after only 22 games following a defeat to River Plate, he became manager of Comunicaciones in 2005. Brindisi was the head coach of Chiapas of Mexico and was fired on 5 May 2009, he was appointed as the manager for Huracán in September 2009 and was resigned due to serious danger of relegation on the 2010/11 seasons. In November 2014, it was reported. HuracánPrimera División: 1973 MetropolitanoBoca JuniorsPrimera División: 1981 Metropolitano Argentine Primera División Top scorer: 1972 Metropolitano Footballer of the Year of Argentina: 1973 AFA Team of All Time CSD MunicipalLiga Nacional: 1987, 1988Barcelona S. C. Campeonato Ecuatoriano de Fútbol: 1989, 1991IndependientePrimera División: 1994 Clausura Supercopa Sudamericana: 1994 Recopa Sudamericana: 1995 Miguel Ángel Brindisi at Futbol Factory profile at the Wayback Machine