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Boids OpenGL Example
Boids is an artificial life program, developed by Craig Reynolds in 1986, which simulates the flocking behaviour of birds. His paper on this topic was published in 1987 in the proceedings of the ACM SIGGRAPH conference. The name "boid" corresponds to a shortened version of "bird-oid object", which refers to a bird-like object. "Boid" is also a New York Metropolitan dialect pronunciation for "bird." As with most artificial life simulations, Boids is an example of emergent behavior; that is, the complexity of Boids arises from the interaction of individual agents (the boids, in this case) adhering to a set of simple rules. The rules applied in the simplest Boids world are as follows: * separation: steer to avoid crowding local flockmates * alignment: steer towards the average heading of local flockmates * cohesion: steer to move towards the average position (center of mass) of local flockmates More complex rules can be added, such as obstacle avoidance and goal seeking. T ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Swarm Robotics
Swarm robotics is an approach to the coordination of multiple robots as a system which consist of large numbers of mostly simple physical robots. ″In a robot swarm, the collective behavior of the robots results from local interactions between the robots and between the robots and the environment in which they act.″ It is supposed that a desired collective behavior emerges from the interactions between the robots and interactions of robots with the environment. This approach emerged on the field of artificial swarm intelligence, as well as the biological studies of insects, ants and other fields in nature, where swarm behaviour occurs. Definition The research of swarm robotics is to study the design of robots, their physical body and their controlling behaviours. It is inspired but not limited by the emergent behaviour observed in social insects, called swarm intelligence. Relatively simple individual rules can produce a large set of complex swarm behaviours. A key component ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
XScreenSaver
XScreenSaver is a free and open-source collection of 240+ screensavers for Unix, macOS, iOS and Android operating systems. It was created by Jamie Zawinski in 1992 and is still maintained by him, with new releases coming out several times a year. Platforms The free software and open-source Unix-like operating systems running the X Window System (such as Linux and FreeBSD) use XScreenSaver almost exclusively. On those systems, there are several packages: one for the screen-saving and locking framework, and two or more for the display modes, divided somewhat arbitrarily. On Macintosh systems, XScreenSaver works with the built-in macOS screen saver. On iOS systems, XScreenSaver is a stand-alone app that can run any of the hacks full-screen. On Android systems, the XScreenSaver display modes work either as normal screen savers (which Android sometimes refers to as "Daydreams") or as live wallpapers. There is no official version for Microsoft Windows, and the developer dis ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Collective Cell Migration
Collective cell migration describes the movements of group of cells and the emergence of collective behavior from cell-environment interactions and cell-cell communication. Collective cell migration is an essential process in the lives of multicellular organisms, e.g. embryonic development, wound healing and cancer spreading (metastasis). Cells can migrate as a cohesive group (e.g. epithelial cells) or have transient cell-cell adhesion sites (e.g. mesenchymal cells). They can also migrate in different modes like sheets, strands, tubes, and clusters. While single-cell migration has been extensively studied, collective cell migration is a relatively new field with applications in preventing birth defects or dysfunction of embryos. It may improve cancer treatment by enabling doctors to prevent tumors from spreading and forming new tumors. Cell-environment interactions The environment of the migrating cell can affect its speed, persistence and direction of migration by stimulating ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Swarm Intelligence
Swarm intelligence (SI) is the collective behavior of decentralized, self-organized systems, natural or artificial. The concept is employed in work on artificial intelligence. The expression was introduced by Gerardo Beni and Jing Wang in 1989, in the context of cellular robotic systems. SI systems consist typically of a population of simple agents or boids interacting locally with one another and with their environment.Hu, J.; Turgut, A.; Krajnik, T.; Lennox, B.; Arvin, F.,Occlusion-Based Coordination Protocol Design for Autonomous Robotic Shepherding Tasks IEEE Transactions on Cognitive and Developmental Systems, 2020. The inspiration often comes from nature, especially biological systems. The agents follow very simple rules, and although there is no centralized control structure dictating how individual agents should behave, local, and to a certain degree random, interactions between such agents lead to the emergence of "intelligent" global behavior, unknown to the individua ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Free Press (publisher)
Free Press was an American independent book publisher that later became an imprint of Simon & Schuster. It was one of the best-known publishers specializing in serious nonfiction, including path-breaking sociology books of the 1950s, 1960s and 1970s. After a period under new ownership in the 1980s of publishing neoconservative books, it was purchased by Simon & Schuster in 1994. By 2012, the imprint ceased to exist as a distinct entity; however, some books were still being published using the Free Press imprint. History Free Press was founded by Jeremiah Kaplan (1926–1993) and Charles Liebman in 1947 and concentrated on religion and social science. They chose the name Free Press because they wanted to print books devoted to civil liberties. It was launched with three classic titles: ''Division of Labor'' by Emile Durkheim, ''The Theory of Economic and Social Organization'' by Max Weber and ''The Scientific Outlook'' by Bertrand Russell. It was headquartered in Glencoe, Illi ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
The Evidence For Evolution
''The'' () is a grammatical article in English, denoting persons or things that are already or about to be mentioned, under discussion, implied or otherwise presumed familiar to listeners, readers, or speakers. It is the definite article in English. ''The'' is the most frequently used word in the English language; studies and analyses of texts have found it to account for seven percent of all printed English-language words. It is derived from gendered articles in Old English which combined in Middle English and now has a single form used with nouns of any gender. The word can be used with both singular and plural nouns, and with a noun that starts with any letter. This is different from many other languages, which have different forms of the definite article for different genders or numbers. Pronunciation In most dialects, "the" is pronounced as (with the voiced dental fricative followed by a schwa) when followed by a consonant sound, and as (homophone of the archaic pro ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Richard Dawkins
Richard Dawkins (born 26 March 1941) is a British evolutionary biologist and author. He is an emeritus fellow of New College, Oxford and was Professor for Public Understanding of Science in the University of Oxford from 1995 to 2008. An atheist, he is well known for his criticism of creationism and intelligent design. Dawkins first came to prominence with his 1976 book '' The Selfish Gene'', which popularised the gene-centred view of evolution and introduced the term '' meme''. With his book '' The Extended Phenotype'' (1982), he introduced into evolutionary biology the influential concept that the phenotypic effects of a gene are not necessarily limited to an organism's body, but can stretch far into the environment, for example, when a beaver builds a dam. His 2004 The Ancestor's Tale set out to make understanding evolution simple for the general public, by tracing common ancestors back from humans to the origins of life. Over time, numerous religious people challen ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Batman Returns
''Batman Returns'' is a 1992 American superhero film directed by Tim Burton and written by Daniel Waters. Based on the DC Comics character Batman, it is the sequel to ''Batman'' (1989) and the second installment in the 1989–1997 ''Batman'' series. In the film, the superhero vigilante Batman comes into conflict with wealthy industrialist Max Shreck and deformed crime boss Oswald Cobbleplot / The Penguin, who seek power, influence, and respect regardless of the cost to Gotham City. Their plans are complicated by Selina Kyle, Shreck's formerly-meek secretary, who seeks vengeance against Shreck as Catwoman. The cast includes Michael Keaton, Danny DeVito, Michelle Pfeiffer, Christopher Walken, Michael Gough, Pat Hingle, and Michael Murphy. Burton had no interest in making a sequel to the successful ''Batman'', believing that he was creatively restricted by the expectations of Warner Bros. He agreed to return in exchange for significant creative control, including rep ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Tim Burton
Timothy Walter Burton (born August 25, 1958) is an American filmmaker and animator. He is known for his gothic fantasy and horror films such as ''Beetlejuice'' (1988), ''Edward Scissorhands'' (1990), ''The Nightmare Before Christmas'' (1993), ''Ed Wood'' (1994), '' Sleepy Hollow'' (1999), ''Corpse Bride'' (2005), '' Sweeney Todd: The Demon Barber of Fleet Street'' (2007) and ''Dark Shadows'' (2012), as well as the television series ''Wednesday ''(2022). Burton also directed the superhero films ''Batman'' (1989) and ''Batman Returns'' (1992), the sci-fi film ''Planet of the Apes'' (2001), the fantasy-drama ''Big Fish'' (2003), the musical adventure film ''Charlie and the Chocolate Factory'' (2005), and the fantasy films ''Alice in Wonderland'' (2010) and ''Miss Peregrine's Home for Peculiar Children'' (2016). Burton has often worked with actors Winona Ryder, Johnny Depp, Lisa Marie (former girlfriend), Helena Bonham Carter (his former domestic partner) and composer Danny Elfm ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Breaking The Ice
Breaking the Ice may refer to: * ''Breaking the Ice'' (film), 1938 American film by Edward F. Cline * "Breaking the Ice" (''Star Trek: Enterprise''), an episode of ''Star Trek: Enterprise'' * "Breaking the Ice" (''Frasier''), an episode of ''Frasier'' * Breaking the Ice (organization), a peace project founded by Heskel Nathaniel * ''Breaking the Ice'' (role-playing game), a 2005 dating game by Emily Care Boss * " Stanley and Stella in: Breaking the Ice", a computer-animated short film See also * Break the Ice (other) *'' Don't Break the Ice'', a strategy game by Milton Bradley * Icebreaker (other) {{disambiguation ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Micro Air Vehicle
A micro air vehicle (MAV), or micro aerial vehicle, is a class of miniature UAVs that has a size restriction and may be autonomous. Modern craft can be as small as 5 centimeters. Development is driven by commercial, research, government, and military purposes; with insect-sized aircraft reportedly expected in the future. The small craft allows remote observation of hazardous environments inaccessible to ground vehicles. MAVs have been built for hobby purposes, such as aerial robotics contests and aerial photography. Practical implementations In 2008, the TU Delft University in the Netherlands developed the smallest ornithopter fitted with a camera, the DelFly Micro, the third version of the DelFly project that started in 2005. This version measures 10 centimeters and weighs 3 grams, slightly larger (and noisier) than the dragonfly on which it was modeled. The importance of the camera lies in remote control when the DelFly is out of sight. However, this version has not yet ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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