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Crowd Simulation
Crowd simulation is the process of simulating the movement (or ) of a large number of entities or characters. It is commonly used to create virtual scenes for visual media like films and video games, and is also used in crisis training, architecture and urban planning, and evacuation simulation. Crowd simulation may focus on aspects that target different applications. For realistic and fast rendering of a crowd for visual media or virtual cinematography, reduction of the complexity of the 3D scene and image-based rendering are used, while variations (changes) in appearance help present a realistic population. In games and applications intended to replicate real-life human crowd movement, like in evacuation simulations, simulated agents may need to navigate towards a goal, avoid collisions, and exhibit other human-like behavior. Many crowd steering algorithms have been developed to lead simulated crowds to their goals realistically. Some more general systems are researched that ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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Virtual Cinematography
Virtual cinematography is the set of cinematographic techniques performed in a computer graphics environment. It includes a wide variety of subjects like photographing real objects, often with stereo or multi-camera setup, for the purpose of recreating them as three-dimensional objects and algorithms for the automated creation of real and simulated camera angles. Virtual cinematography can be used to shoot scenes from otherwise impossible camera angles, create the photography of animated films, and manipulate the appearance of computer-generated effects.Virtual cinematography is the set of cinematographic techniques performed in a computer graphics environment History Early stages An early example of a film integrating a virtual environment is the 1998 film, ''What Dreams May Come'', starring Robin Williams. The film's special effects team used actual building blueprints to generate scale wireframe models that were then used to generate the virtual world. The film went on ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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Position Vector
In geometry, a position or position vector, also known as location vector or radius vector, is a Euclidean vector that represents the position of a point ''P'' in space in relation to an arbitrary reference origin ''O''. Usually denoted x, r, or s, it corresponds to the straight line segment from ''O'' to ''P''. In other words, it is the displacement or translation that maps the origin to ''P'': :\mathbf=\overrightarrow The term "position vector" is used mostly in the fields of differential geometry, mechanics and occasionally vector calculus. Frequently this is used in two-dimensional or three-dimensional space, but can be easily generalized to Euclidean spaces and affine spaces of any dimension.Keller, F. J, Gettys, W. E. et al. (1993), p 28–29 Relative position The relative position of a point ''Q'' with respect to point ''P'' is the Euclidean vector resulting from the subtraction of the two absolute position vectors (each with respect to the origin): :\Delta \math ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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Insect Repellent
An insect repellent (also commonly called "bug spray") is a substance applied to skin, clothing, or other surfaces to discourage insects (and arthropods in general) from landing or climbing on that surface. Insect repellents help prevent and control the outbreak of insect-borne (and other arthropod-bourne) diseases such as malaria, Lyme disease, dengue fever, bubonic plague, river blindness, and West Nile fever. Pest animals commonly serving as vectors for disease include insects such as flea, fly, and mosquito; and ticks (arachnids). Some insect repellents are insecticides (bug killers), but most simply discourage insects and send them flying or crawling away. Nearly any would be fatal upon reaching the median lethal dose, but classification as an insecticide implies death even at lower doses. Effectiveness Synthetic repellents tend to be more effective and/or longer lasting than "natural" repellents. For protection against mosquito bites, the U.S. Centers for D ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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Crowd Psychology
Crowd psychology, also known as mob psychology, is a branch of social psychology. Social psychologists have developed several theories for explaining the ways in which the psychology of a crowd differs from and interacts with that of the individuals within it. Major theorists in crowd psychology include Gustave Le Bon, Gabriel Tarde and Sigmund Freud. This field relates to the behaviors and thought processes of both the individual crowd members and the crowd as an entity. Crowd behavior is heavily influenced by the loss of responsibility of the individual and the impression of universality of behavior, both of which increase with crowd size. Origins The first debate in crowd psychology began in Rome at the first International Congress of Criminal Anthropology on 16 November 1885. The meeting was dominated by Cesare Lombroso and his fellow Italians, who emphasized the biological determinates. : "Lombroso detailed before the first congress his theories of the physical anomalies ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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Group Dynamics
Group dynamics is a system of behaviors and psychological processes occurring within a social group (''intra''group dynamics), or between social groups ( ''inter''group dynamics). The study of group dynamics can be useful in understanding decision-making behaviour, tracking the spread of diseases in society, creating effective therapy techniques, and following the emergence and popularity of new ideas and technologies. These applications of the field are studied in psychology, sociology, anthropology, political science, epidemiology, education, social work, leadership studies, business and managerial studies, as well as communication studies. History The history of group dynamics (or group processes) has a consistent, underlying premise: 'the whole is greater than the sum of its parts.' A social group is an entity that has qualities which cannot be understood just by studying the individuals that make up the group. In 1924, Gestalt psychologist Max Wertheimer proposed ‘There are ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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The Lord Of The Rings (film Series)
''The Lord of the Rings'' is a series of three epic fantasy adventure films directed by Peter Jackson, based on the novel ''The Lord of the Rings'' by J. R. R. Tolkien. The films are subtitled '' The Fellowship of the Ring'' (2001), '' The Two Towers'' (2002), and '' The Return of the King'' (2003). Produced and distributed by New Line Cinema with the co-production of WingNut Films, the series is an international venture between New Zealand and the United States. The films feature an ensemble cast including Elijah Wood, Ian McKellen, Liv Tyler, Viggo Mortensen, Sean Astin, Cate Blanchett, John Rhys-Davies, Christopher Lee, Billy Boyd, Dominic Monaghan, Orlando Bloom, Hugo Weaving, Andy Serkis and Sean Bean. Set in the fictional world of Middle-earth, the films follow the hobbit Frodo Baggins as he and the Fellowship embark on a quest to destroy the One Ring, to ensure the destruction of its maker, the Dark Lord Sauron. The Fellowship eventually splits up ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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New Line Cinema
New Line Cinema is an American film production studio owned by Warner Bros. Discovery and is a film label of Warner Bros. It was founded in 1967 by Robert Shaye as an independent film distribution company; later becoming a film studio after acquired by Turner Broadcasting System in 1994; Turner later merged with Time Warner (later known as WarnerMedia from 2018 to 2022) in 1996, and New Line was merged with Warner Bros. Pictures in 2008. The studio has been nicknamed, "The House that Freddy Built" due to the success of the ''Nightmare on Elm Street'' film series. History New Line Cinema was established in 1967 by the then 27-year-old Robert Shaye as a film distribution company, supplying foreign and art films for college campuses in the United States. Shaye operated New Line's offices out of his apartment at 14th Street and Second Avenue in New York City. One of the company's early successes was its distribution of the 1936 anti-cannabis propaganda film '' Reefer Mad ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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Stevens' Law
Stevens' power law is an empirical relationship in psychophysics between an increased intensity or strength in a physical stimulus and the perceived magnitude increase in the sensation created by the stimulus. It is often considered to supersede the Weber–Fechner law, which is based on a logarithmic relationship between stimulus and sensation, because the power law describes a wider range of sensory comparisons, down to zero intensity. The theory is named after psychophysicist Stanley Smith Stevens (1906–1973). Although the idea of a power law had been suggested by 19th-century researchers, Stevens is credited with reviving the law and publishing a body of psychophysical data to support it in 1957. The general form of the law is :\psi(I) = k I ^a, where ''I'' is the intensity or strength of the stimulus in physical units (energy, weight, pressure, mixture proportions, etc.), ψ(''I'') is the magnitude of the sensation evoked by the stimulus, ''a'' is an exponent that depend ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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General Adaptation Syndrome
Stress, either physiological, biological or psychological, is an organism's response to a stressor such as an environmental condition. Stress is the body's method of reacting to a condition such as a threat, challenge or physical and psychological barrier. There are two hormones that an individual produces during a stressful situation, these are well known as adrenaline and cortisol. There are two kinds of stress hormone levels. Resting (basal) cortisol levels are normal everyday quantities that are essential for standard functioning. Reactive cortisol levels are increases in cortisol in response to stressors. Stimuli that alter an organism's environment are responded to by multiple systems in the body. In humans and most mammals, the autonomic nervous system and hypothalamic-pituitary-adrenal (HPA) axis are the two major systems that respond to stress. The sympathoadrenal medullary (SAM) axis may activate the fight-or-flight response through the sympathetic nervous system, wh ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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Big Five Personality Traits
The Big Five personality traits is a suggested taxonomy, or grouping, for personality traits, developed from the 1980s onward in psychological trait theory. Starting in the 1990s, the theory identified five factors by labels, for the US English speaking population, typically referred to as: * openness to experience (inventive/curious vs. consistent/cautious) * conscientiousness (efficient/organized vs. extravagant/careless) * extraversion (outgoing/energetic vs. solitary/reserved) * agreeableness (friendly/compassionate vs. critical/rational) * neuroticism (sensitive/nervous vs. resilient/confident) When factor analysis (a statistical technique) is applied to personality survey data, it reveals semantic associations: some words used to describe aspects of personality are often applied to the same person. For example, someone described as conscientious is more likely to be described as "always prepared" rather than "messy". These associations suggest five broad dimensions u ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |