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Calisthenics (American English) or callisthenics (British English) (/ˌkælɪsˈθɛnɪks/) is a form of strength training consisting of a variety of movements that exercise large muscle groups (gross motor movements), such as standing, grasping, pushing, etc. These exercises are often performed rhythmically and with minimal equipment, as bodyweight exercises. They are intended to increase strength, fitness, and flexibility, through movements such as pulling, pushing, bending, jumping, or swinging, using one’s body weight for resistance. Calisthenics can provide the benefits of muscular and aerobic conditioning, in addition to improving psychomotor skills such as balance, agility, and coordination.
Urban calisthenics is a form of street workout; calisthenics groups perform exercise routines in urban areas. Individuals and groups train to perform advanced calisthenics skills such as muscle-ups, levers, and various freestyle moves such as spins and flips.
Sports teams and military units often perform leader-directed group calisthenics as a form of synchronized physical training (often including a customized “call and response” routine) to increase group cohesion and discipline. Calisthenics is also popular as a component of physical education in primary and secondary schools over much of the globe.
In addition to general fitness, calisthenic exercises are often used as baseline physical evaluations for military organizations around the world. Two examples are the U.S. Army Physical Fitness Test and the U.S.M.C. Physical Fitness Test.
In economics, capital consists of human-created assets that can enhance one’s power to perform economically useful work. For example, a stone arrowhead is capital for a hunter-gatherer who can use it as a hunting instrument; similarly, roads are capital for inhabitants of a city. Capital is distinct from land and other non-renewable resources in that it can be increased by human labor, and does not include certain durable goods like homes and personal automobiles that are not used in the production of saleable goods and services. Adam Smith defined capital as “that part of man’s stock which he expects to afford him revenue”. In economic models, capital is an input in the production function.
The total physical capital at any given moment in time is referred to as the capital stock (not to be confused with the capital stock of a business entity). Capital goods, real capital, or capital assets are already-produced, durable goods or any non-financial asset that is used in production of goods or services.
In Marxian economics, capital is money used to buy something only in order to sell it again to realize a profit. For Marx, capital only exists within the process of the economic circuit (represented by M-C-M’)—it is wealth that grows out of the process of circulation itself, and for Marx it formed the basis of the economic system of capitalism. In more contemporary schools of economics, this form of capital is generally referred to as “financial capital” and is distinguished from “capital goods”.
Catering is the business of providing food service at a remote site or a site such as a hotel, hospital, pub, aircraft, cruise ship, park, filming site or studio, entertainment site, or event venue.
The earliest account of major services being catered in the United States is a 1778 ball in Philadelphia catered by Caesar Cranshell to celebrate the departure of British General William Howe. Catering business began to form around 1820, centering in Philadelphia. Catering became a respectable and profitable business. The early catering industry was disproportionately founded by African-Americans.
The cerebral cortex, also known as the cerebral mantle, is the outer layer of neural tissue of the cerebrum of the brain in humans and other mammals. The cerebral cortex mostly consists of the six-layered neocortex, with just ten per cent consisting of allocortex. It is separated into two cortices, by the longitudinal fissure that divides the cerebrum into the left and right cerebral hemispheres. The two hemispheres are joined beneath the cortex by the corpus callosum. The cerebral cortex is the largest site of neural integration in the central nervous system. It plays a key role in attention, perception, awareness, thought, memory, language, and consciousness.
Certainty (also known as epistemic certainty or objective certainty) is the epistemic property that a person has no rational grounds for doubting a particular belief or set of beliefs. One standard way of defining epistemic certainty is that a belief is certain if and only if the person holding that belief could not be mistaken in holding that belief. Other common definitions of certainty involve the indubitable nature of such beliefs or define certainty as a property of those beliefs with the greatest possible justification. Certainty is closely related to knowledge, although contemporary philosophers tend to treat knowledge as having lower requirements than certainty.
Importantly, epistemic certainty is not the same thing as psychological certainty (also known as subjective certainty), which describes the highest degree to which a person could be convinced that something is true. While a person may be completely convinced that a particular belief is true, and might even be psychologically incapable of entertaining its falsity, this does not entail that the belief is itself beyond rational doubt or incapable of being false. While the word “certainty” is sometimes used to refer to a person’s subjective certainty about the truth of a belief, philosophers are primarily interested in the question of whether any beliefs ever attain objective certainty.
In Christian theology, Charity (Latin Caritas) is considered as one of the seven virtues and is understood by Thomas Aquinas as “the friendship of man for God”, which “unites us to God”. He holds it as “the most excellent of the virtues”. Further, Aquinas holds that “the habit of charity extends not only to the love of God, but also to the love of our neighbor”. The Catechism of the Catholic Church defines “charity” as “the theological virtue by which we love God above all things for His own sake, and our neighbor as ourselves for the love of God”.
Civil engineering is a professional engineering discipline that deals with the design, construction, and maintenance of the physical and naturally built environment, including public works such as roads, bridges, canals, dams, airports, sewerage systems, pipelines, structural components of buildings, and railways.
Civil engineering is traditionally broken into a number of sub-disciplines. It is considered the second-oldest engineering discipline after military engineering, and it is defined to distinguish non-military engineering from military engineering. Civil engineering can take place in the public sector from municipal public works departments through to federal government agencies, and in the private sector from locally based firms to global Fortune 500 companies.
Clinical psychology is an integration of science, theory, and clinical knowledge for the purpose of understanding, preventing, and relieving psychologically-based distress or dysfunction and to promote subjective well-being and personal development. Central to its practice are psychological assessment, clinical formulation, and psychotherapy, although clinical psychologists also engage in research, teaching, consultation, forensic testimony, and program development and administration. In many countries, clinical psychology is a regulated mental health profession.
The field is generally considered to have begun in 1896 with the opening of the first psychological clinic at the University of Pennsylvania by Lightner Witmer. In the first half of the 20th century, clinical psychology was focused on psychological assessment, with little attention given to treatment. This changed after the 1940s when World War II resulted in the need for a large increase in the number of trained clinicians. Since that time, three main educational models have developed in the USA—the Ph.D. Clinical Science model (heavily focused on research), the Ph.D. science-practitioner model (integrating scientific research and practice), and the Psy.D. practitioner-scholar model (focusing on clinical theory and practice). In the UK and the Republic of Ireland, the Clinical Psychology Doctorate falls between the latter two of these models, whilst in much of mainland Europe, the training is at the masters level and predominantly psychotherapeutic. Clinical psychologists are expert in providing psychotherapy, and generally train within four primary theoretical orientations—psychodynamic, humanistic, cognitive behavioral therapy (CBT), and systems or family therapy.
A coffeehouse, coffee shop, or café is an establishment that primarily serves coffee (of various types, e.g. espresso, latte, cappuccino). Some coffeehouses may serve cold drinks such as iced coffee and iced tea; in continental Europe, cafés serve alcoholic drinks. A coffeehouse may also serve food such as light snacks, sandwiches, muffins, fruit or pastries. Coffeehouses range from owner-operated small businesses to large multinational corporations. Some coffeehouse chains operate on a franchise business model, with numerous branches across various countries around the world.
Cognition is “the mental action or process of acquiring knowledge and understanding through thought, experience, and the senses”. It encompasses many aspects of intellectual functions and processes such as attention, the formation of knowledge, memory and working memory, judgment and evaluation, reasoning and “computation”, problem solving and decision making, comprehension and production of language. Cognitive processes use existing knowledge and generate new knowledge.
Cognitive development is a field of study in neuroscience and psychology focusing on a child’s development in terms of information processing, conceptual resources, perceptual skill, language learning, and other aspects of the developed adult brain and cognitive psychology. Qualitative differences between how a child processes their waking experience and how an adult processes their waking experience are acknowledged (Such as object permanence, the understanding of logical relations, and cause-effect reasoning in school-age children). Cognitive development is defined as the emergence of the ability to consciously cognize, understand, and articulate their understanding in adult terms. Cognitive development is how a person perceives, thinks, and gains understanding of their world through the relations of genetic and learning factors. There are four stages to cognitive information development. They are, reasoning, intelligence, language, and memory. These stages start when the baby is about 18 months old, they play with toys, listen to their parents speak, they watch tv, anything that catches their attention helps build their cognitive development.
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Cognitive linguistics is an interdisciplinary branch of linguistics, combining knowledge and research from cognitive psychology, neuropsychology and linguistics. Models and theoretical accounts of cognitive linguistics are considered as psychologically real, and research in cognitive linguistics aims to help understand cognition in general and is seen as a road into the human mind.
There has been scientific and terminological controversy around the label ‘cognitive linguistics’; there is no consensus on what specifically is meant with the term.
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Cognitive psychology is the scientific study of mental processes such as “attention, language use, memory, perception, problem solving, creativity, and thinking”.
The origin of cognitive psychology occurred in the 1960s in a break from behaviorism, which had held from the 1920s to 1950s that unobservable mental processes were outside of the realm of empirical science. This break came as researchers in linguistics and cybernetics as well as applied psychology used models of mental processing to explain human behavior. Much of the work derived from cognitive psychology has been integrated into other branches of psychology and various other modern disciplines such as cognitive science, linguistics, and economics. The domain of cognitive psychology overlaps with that of cognitive science, which takes a more interdisciplinary approach and includes studies of non-human subjects and artificial intelligence.
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Figure illustrating the fields that contributed to the birth of cognitive science, including linguistics, neuroscience, artificial intelligence, philosophy, anthropology, and psychology
Cognitive science is the interdisciplinary, scientific study of the mind and its processes. It examines the nature, the tasks, and the functions of cognition (in a broad sense). Cognitive scientists study intelligence and behavior, with a focus on how nervous systems represent, process, and transform information. Mental faculties of concern to cognitive scientists include language, perception, memory, attention, reasoning, and emotion; to understand these faculties, cognitive scientists borrow from fields such as linguistics, psychology, artificial intelligence, philosophy, neuroscience, and anthropology. The typical analysis of cognitive science spans many levels of organization, from learning and decision to logic and planning; from neural circuitry to modular brain organization. The fundamental concept of cognitive science is that “thinking can best be understood in terms of representational structures in the mind and computational procedures that operate on those structures.”
Collaboration is the process of two or more people, entities or organizations working together to complete a task or achieve a goal. Collaboration is similar to cooperation. Most collaboration requires leadership,[vague] although the form of leadership can be social within a decentralized and egalitarian group. Teams that work collaboratively often access greater resources, recognition and rewards when facing competition for finite resources.
Structured methods of collaboration encourage introspection of behavior and communication. Such methods aim to increase the success of teams as they engage in collaborative problem-solving.
Collaboration is present in opposing goals exhibiting the notion of adversarial collaboration, though this is not a common use of the term.
In its applied sense,”(a) collaboration is a purposeful relationship in which all parties strategically choose to cooperate in order to accomplish a shared outcome.”
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Commerce is the exchange of goods and services, especially on a large scale.
The English-language word commerce has been derived from the Latin word commercium, from com (“together”) and merx (“merchandise”).
Communication (from Latin communicare, meaning “to share”)[better source needed] is the act of developing meaning among entities or groups through the use of sufficiently mutually understood signs, symbols, and semiotic conventions.
The main elements inherent to communication have been described as:
The formation of communicative motivation or reason.
Message composition (further internal or technical elaboration on what exactly to express).
Message encoding (for example, into digital data, written text, speech, pictures, gestures and so on).
Transmission of the encoded message as a sequence of signals using a specific channel or medium.
Noise sources such as natural forces and in some cases human activity (both intentional and accidental) begin influencing the quality of signals propagating from the sender to one or more receivers.
Reception of signals and reassembling of the encoded message from a sequence of received signals.
Decoding of the reassembled encoded message.
Interpretation and making sense of the presumed original message.
A company, abbreviated as co., is a legal entity representing an association of people, whether natural, legal or a mixture of both, with a specific objective. Company members share a common purpose and unite to achieve specific, declared goals. Companies take various forms, such as:
voluntary associations, which may include nonprofit organizations
business entities, whose aim is generating profit
financial entities and banks
programs or educational institutions.
A company can be created as a legal person so that the company itself has limited liability as members perform or fail to discharge their duty according to the publicly declared incorporation, or published policy. When a company closes, it may need to be liquidated to avoid further legal obligations.
Companies may associate and collectively register themselves as new companies; the resulting entities are often known as corporate groups.
Compliance is a response—specifically, a submission—made in reaction to a request. The request may be explicit (e.g., foot-in-the-door technique) or implicit (e.g., advertising). The target may or may not recognize that they are being urged to act in a particular way.
Social psychology is centered on the idea of social influence. Defined as the effect that the words, actions, or mere presence of other people (real or imagined) have on our thoughts, feelings, attitudes, or behavior; social influence is the driving force behind compliance. It is important that psychologists and ordinary people alike recognize that social influence extends beyond our behavior—to our thoughts, feelings and beliefs—and that it takes on many forms. Persuasion and the gaining of compliance are particularly significant types of social influence since they utilize the respective effect’s power to attain the submission of others. Studying compliance is significant because it is a type of social influence that affects our everyday behavior—especially social interactions. Compliance itself is a complicated concept that must be studied in depth so that its uses, implications and both its theoretical and experimental approaches may be better understood.
Computer science (sometimes called computation science) is the study of processes that interact with data and that can be represented as data in the form of programs. It enables the use of algorithms to manipulate, store, and communicate digital information. A computer scientist studies the theory of computation and the practice of designing software systems.
A concert is a live music performance in front of an audience. The performance may be by a single musician, sometimes then called a recital, or by a musical ensemble, such as an orchestra, choir, or band. Concerts are held in a wide variety and size of settings, from private houses and small nightclubs, dedicated concert halls, arenas and parks to large multipurpose buildings, and even sports stadiums. Indoor concerts held in the largest venues are sometimes called arena concerts or amphitheatre concerts. Informal names for a concert include show and gig.
Consciousness at its simplest is “sentience or awareness of internal or external existence”. Despite centuries of analyses, definitions, explanations and debates by philosophers and scientists, consciousness remains puzzling and controversial, being “at once the most familiar and most mysterious aspect of our lives”. Perhaps the only widely agreed notion about the topic is the intuition that it exists. Opinions differ about what exactly needs to be studied and explained as consciousness. Sometimes it is synonymous with ‘the mind’, other times just an aspect of mind. In the past it was one’s “inner life”, the world of introspection, of private thought, imagination and volition. Today, with modern research into the brain it often includes any kind of experience, cognition, feeling or perception. It may be ‘awareness’, or ‘awareness of awareness’, or self-awareness. There might be different levels or “orders” of consciousness, or different kinds of consciousness, or just one kind with different features. Other questions include whether only humans are conscious or all animals or even the whole universe. The disparate range of research, notions and speculations raises doubts whether the right questions are being asked.
A conspiracy theory is an explanation for an event or situation that invokes a conspiracy by sinister and powerful groups, often political in motivation, when other explanations are more probable. The term has a negative connotation, implying that the appeal to a conspiracy is based on prejudice or insufficient evidence.
Conspiracy theories resist falsification and are reinforced by circular reasoning: both evidence against the conspiracy and an absence of evidence for it are re-interpreted as evidence of its truth, whereby the conspiracy becomes a matter of faith rather than something that can be proved or disproved. Research suggests that conspiracist ideation—belief in conspiracy theories—may be psychologically harmful or pathological and that it is correlated with psychological projection, paranoia and Machiavellianism. Psychologists attribute finding a conspiracy where there is none to a mental phenomenon called illusory pattern perception.
Historically, conspiracy theories have been closely linked to prejudice, witch hunts, wars, and genocides. They are often strongly believed by the perpetrators of terrorist attacks, and were used as justification by Timothy McVeigh and Anders Breivik, as well as by governments such as Nazi Germany, the Soviet Union, and Turkey. AIDS denialism by the government of South Africa, motivated by conspiracy theories, caused an estimated 330,000 deaths from AIDS, while belief in conspiracy theories about genetically modified foods led the government of Zambia to reject food aid during a famine, at a time when 3 million people in the country were suffering from hunger. Conspiracy theories are a significant obstacle to improvements in public health, encouraging opposition to vaccination and water fluoridation among others, and have been linked to outbreaks of vaccine-preventable diseases. Other effects of conspiracy theories include reduced trust in scientific evidence, radicalization and ideological reinforcement of extremist groups, and negative consequences for the economy.
Conspiracy theories once limited to fringe audiences have become commonplace in mass media, emerging as a cultural phenomenon of the late 20th and early 21st centuries. They are widespread around the world and are often commonly believed, some even being held by the majority of the population. Interventions to reduce the occurrence of conspiracy beliefs include maintaining an open society and improving the analytical thinking skills of the general public.
Whilst in the life of the intellect ‘contemplation’ refers to thinking profoundly about something, in the religious life contemplation is a kind of inner vision or seeing, transcendent of the intellect, facilitated by means of practices such as prayer or meditation.
Contempt is a pattern of attitudes and behaviour, often towards an individual or group, but sometimes towards an ideology, which has the characteristics of disgust and anger.
Contentment is an emotional state of satisfaction that can be seen as a mental state, maybe drawn from being at ease in one’s situation, body and mind. Colloquially speaking, contentment could be a state of having accepted one’s situation and is a milder and more tentative form of happiness.
Conversation is interactive communication between two or more people. The development of conversational skills and etiquette is an important part of socialization. The development of conversational skills in a new language is a frequent focus of language teaching and learning. Conversation analysis is a branch of sociology which studies the structure and organization of human interaction, with a more specific focus on conversational interaction.
Conviction politics is the practice of campaigning based on a politician’s own fundamental values or ideas rather than attempting to represent an existing consensus or simply take positions that are popular in polls.
On the right, the term has been adopted by politicians like Margaret Thatcher, who declared, “I am not a consensus politician. I am a conviction politician” in 1979, a few months before her election as prime minister.
Cooking or cookery is the art, technology, science and craft of preparing food for consumption. Cooking techniques and ingredients vary widely across the world, from grilling food over an open fire to using electric stoves, to baking in various types of ovens, reflecting unique environmental, economic, and cultural traditions and trends. Types of cooking also depend on the skill levels and training of cooks. Cooking is done both by people in their own dwellings and by professional cooks and chefs in restaurants and other food establishments. Cooking can also occur through chemical reactions without the presence of heat, such as in ceviche, a traditional South American dish where fish is cooked with the acids in lemon or lime juice. Preparing food with heat or fire is an activity unique to humans. It may have started around 2 million years ago, though archaeological evidence for it reaches no more than 1 million years ago.
The Cooper test is a test of physical fitness. It was designed by Kenneth H. Cooper in 1968 for US military use.
In the original form, the point of the test is to run as far as possible within 12 minutes.
Pacing is important, as the participant will not cover a maximal distance if they begin with a pace too close to an all out sprint.
The outcome is based on the distance the test person ran, their age and their sex.
The results can be correlated with VO2 Max.
Cooperation (written as co-operation in British English) is the process of groups of organisms working or acting together for common, mutual, or some underlying benefit, as opposed to working in competition for selfish benefit. Many animal and plant species cooperate both with other members of their own species and with members of other species (symbiosis or mutualism).
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Cosmetics are a category of health and beauty products that are used to care for the face and body, or used to accentuate or change a person’s appearance. Cosmetics can boost confidence. Though cosmetics are commonly thought of as only makeup used to alter a person’s appearance, cosmetics can also refer to a number of products used to care for the skin and the body, as well as those used to add fragrance to it. There are a large number of cosmetics available under these various categories, each designed for different purposes and featuring different characteristics.
Cosmetology (from Greek κοσμητικός, kosmētikos, “beautifying”; and -λογία, -logia) is the study and application of beauty treatment. Branches of specialty include hairstyling, skin care, cosmetics, manicures/pedicures, non-permanent hair removal such as waxing and sugaring, and permanent hair removal processes such as electrology and intense pulsed light (IPL).
Counter-terrorism (also spelled counterterrorism), also known as anti-terrorism, incorporates the practice, military tactics, techniques, and strategy that government, military, law enforcement, business, and intelligence agencies use to combat or prevent terrorism. Counter-terrorism strategy is a government’s plan to use the instruments of national power to neutralize terrorists, their organizations, and their networks in order to render them incapable of using violence to instill fear and to coerce the government or its citizens to react in accordance with the terrorists’ goals.
If terrorism is part of a broader insurgency, counter-terrorism may employ counter-insurgency measures. The United States Armed Forces use the term foreign internal defense for programs that support other countries in attempts to suppress insurgency, lawlessness, or subversion or to reduce the conditions under which these threats to security may develop.
A court is any person or institution, often as a government institution, with the authority to adjudicate legal disputes between parties and carry out the administration of justice in civil, criminal, and administrative matters in accordance with the rule of law. In both common law and civil law legal systems, courts are the central means for dispute resolution, and it is generally understood that all people have an ability to bring their claims before a court. Similarly, the rights of those accused of a crime include the right to present a defense before a court.
A craft or trade is a pastime or an occupation that requires particular skills and knowledge of skilled work. In a historical sense, particularly the Middle Ages and earlier, the term is usually applied to people occupied in small-scale production of goods, or their maintenance, for example by tinkers. The traditional term craftsman is nowadays often replaced by artisan and by craftsperson (craftspeople).
Creativity is a phenomenon whereby something new and somehow valuable is formed. The created item may be intangible (such as an idea, a scientific theory, a musical composition, or a joke) or a physical object (such as an invention, a literary work, or a painting).
Cultural determinism is the belief that the culture in which we are raised determines who we are at emotional and behavioral levels. It contrasts with genetic determinism, the theory that biologically inherited traits and the environmental influences that affect those traits dominate who we are.
Yet another way of looking at the concept of cultural determinism is to contrast it with the idea of environmental determinism. The latter is the idea that the physical world- with all its constraints and potentially life-altering elements-is responsible for the make-up of each existing culture. Contrast this with the idea that we (humans) create our own situations through the power of thought, socialization, and all forms of information circulation.
It is also used to describe the concept that culture determines economic and political arrangements. It is an idea which has recurred in many cultures over human history, from ancient civilizations through the present.
A cultural universal (also called an anthropological universal or human universal), as discussed by Emile Durkheim, George Murdock, Claude Lévi-Strauss, Donald Brown and others, is an element, pattern, trait, or institution that is common to all human cultures worldwide. Taken together, the whole body of cultural universals is known as the human condition. Evolutionary psychologists hold that behaviors or traits that occur universally in all cultures are good candidates for evolutionary adaptations. Some anthropological and sociological theorists that take a cultural relativist perspective may deny the existence of cultural universals: the extent to which these universals are “cultural” in the narrow sense, or in fact biologically inherited behavior is an issue of “nature versus nurture”.
Culture (/ˈkʌltʃər/) is an umbrella term which encompasses the social behavior and norms found in human societies, as well as the knowledge, beliefs, arts, laws, customs, capabilities, and habits of the individuals in these groups.
Humans acquire culture through the learning processes of enculturation and socialization, which is shown by the diversity of cultures across societies.
A cultural norm codifies acceptable conduct in society; it serves as a guideline for behavior, dress, language, and demeanor in a situation, which serves as a template for expectations in a social group. Accepting only a monoculture in a social group can bear risks, just as a single species can wither in the face of environmental change, for lack of functional responses to the change. Thus in military culture, valor is counted a typical behavior for an individual and duty, honor, and loyalty to the social group are counted as virtues or functional responses in the continuum of conflict. In the practice of religion, analogous attributes can be identified in a social group.
Curiosity (from Latin cūriōsitās, from cūriōsus “careful, diligent, curious”, akin to cura “care”) is a quality related to inquisitive thinking such as exploration, investigation, and learning, evident by observation in humans and other animals. Curiosity is heavily associated with all aspects of human development, in which derives the process of learning and desire to acquire knowledge and skill.
The term curiosity can also be used to denote the behavior or emotion of being curious, in regard to the desire to gain knowledge or information. Curiosity as a behavior and emotion is attributed over millennia as the driving force behind not only human development, but developments in science, language, and industry.
Cybernetics is a transdisciplinary approach for exploring regulatory and purposive systems—their structures, constraints, and possibilities. The core concept of the discipline is circular causality or feedback—that is, where the outcomes of actions are taken as inputs for further action. Cybernetics is concerned with such processes however they are embodied, including in environmental, technological, biological, cognitive, and social systems, and in the context of practical activities such as designing, learning, managing, and conversation.
Cybernetics has its origins in the intersection of the fields of control systems, electrical network theory, mechanical engineering, logic modeling, evolutionary biology, neuroscience, anthropology, and psychology in the 1940s, often attributed to the Macy Conferences. Since then, cybernetics has become even broader in scope to include work in domains such as design, family therapy, management and organisation, pedagogy, sociology, and the creative arts. At the same time, questions arising from circular causality have been explored in relation to the philosophy of science, ethics, and constructivist approaches. Contemporary cybernetics thus varies widely in scope and focus, with cyberneticians variously adopting and combining technical, scientific, philosophical, creative, and critical approaches.
Cycle sport is competitive physical activity using bicycles. There are several categories of bicycle racing including road bicycle racing, time trialling, cyclo-cross, mountain bike racing, track cycling, BMX, and cycle speedway. Non-racing cycling sports include artistic cycling, cycle polo, freestyle BMX and mountain bike trials. The Union Cycliste Internationale (UCI) is the world governing body for cycling and international competitive cycling events. The International Human Powered Vehicle Association is the governing body for human-powered vehicles that imposes far fewer restrictions on their design than does the UCI. The UltraMarathon Cycling Association is the governing body for many ultra-distance cycling races.
Cycling, also called bicycling or biking, is the use of bicycles for transport, recreation, exercise or sport. People engaged in cycling are referred to as “cyclists”, “bicyclists”, or “bikers”. Apart from two-wheeled bicycles, “cycling” also includes the riding of unicycles, tricycles, quadricycles, recumbent and similar human-powered vehicles (HPVs).