- published: 23 Apr 2014
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Bottlenose dolphins, the genus Tursiops, are the most common and well-known members of the family Delphinidae, the family of oceanic dolphin. Recent molecular studies show the genus contains two species, the common bottlenose dolphin (Tursiops truncatus) and the Indo-Pacific bottlenose dolphin (Tursiops aduncus), instead of one. Research in 2011 revealed a third species, the Burrunan dolphin (Tursiops australis). Bottlenose dolphins inhabit warm and temperate seas worldwide.
Bottlenose dolphins live in groups typically of 10–30 members, called pods, but group size varies from single individuals up to more than 1,000. Their diets consist mainly of forage fish. Dolphins often work as a team to harvest fish schools, but they also hunt individually. Dolphins search for prey primarily using echolocation, which is similar to sonar. They emit clicking sounds and listen for the return echos to determine the location and shape of nearby items, including potential prey. Bottlenose dolphins also use sound for communication, including squeaks and whistles emitted from the blowhole and sounds emitted through body language, such as leaping from the water and slapping their tails on the water surface.
Works in the public domain are those whose exclusive intellectual property rights have expired, have been forfeited, or are inapplicable. For example, the works of Shakespeare and Beethoven, and most of the early silent films, are all now in the public domain by leaving the copyright term. Examples for works not covered by copyright which are therefore in the public domain, are the formulae of Newtonian physics, cooking recipes and all software before 1974. Examples for works actively dedicated into public domain by their authors are the Serpent encryption reference implementation,NIH's ImageJ, and the CIA's The World Factbook. The term is not normally applied to situations where the creator of a work retains residual rights, in which case use of the work is referred to as "under license" or "with permission".
As rights are country-based and vary, a work may be subject to rights in one country and be in the public domain in another. Some rights depend on registrations on a country-by-country basis, and the absence of registration in a particular country, if required, creates public domain status for a work in that country.
In public relations and communication science, publics are groups of individual people, and the public (a.k.a. the general public) is the totality of such groupings. This is a different concept to the sociological concept of the Öffentlichkeit or public sphere. The concept of a public has also been defined in political science, psychology, marketing, and advertising. In public relations and communication science, it is one of the more ambiguous concepts in the field. Although it has definitions in the theory of the field that have been formulated from the early 20th century onwards, it has suffered in more recent years from being blurred, as a result of conflation of the idea of a public with the notions of audience, market segment, community, constituency, and stakeholder.
The name "public" originates with the Latin publicus (also poplicus), from populus, and in general denotes some mass population ("the people") in association with some matter of common interest. So in political science and history, a public is a population of individuals in association with civic affairs, or affairs of office or state. In social psychology, marketing, and public relations, a public has a more situational definition.John Dewey defined (Dewey 1927) a public as a group of people who, in facing a similar problem, recognize it and organize themselves to address it. Dewey's definition of a public is thus situational: people organized about a situation. Built upon this situational definition of a public is the situational theory of publics by James E. Grunig (Grunig 1983), which talks of nonpublics (who have no problem), latent publics (who have a problem), aware publics (who recognize that they have a problem), and active publics (who do something about their problem).
Latin root SPIR (inspiration, respiration, spirit)
https://www.youtube.com/channel/rootsandroutes1 Roots and Routes is a channel about connections--between words and their cousins, between academic disciplines, and between learners. This is the first of the series about word roots, here, the Latin base "SPIR" that will cover everything from well-known prefixes and suffixes to the deeper connections of sound and meaning that shape human language. Credits are also in the video, but I have fun writing credits, so here they are in the description too! Thank you particularly to Germans, whose work can so commonly be found released into the public domain or with a CC-BY license. Twitter:@rootsandroutesr Other media under construction Credits Music "Dhaka" - Kevin MacLeod - incompetech.com (CC-BY) Videos (all CC-BY) • Raymond Brouwers - ...