Precursors to public relations can be found in publicists who specialized in promoting circuses, theatrical performances, and other public spectacles. Later, most PR practitioners were and are still recruited from the ranks of journalism. Journalists concerned with ethics question former colleagues for using their inside understanding of news media, helping clients receive favorable media coverage. Highly paid PR positions remain a popular career change choice for many journalists. PR historians say the first PR firm, the Publicity Bureau, w ...

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Public relations, Public relations - Public relations versus publicity, Public relations - History, Public relations - The industry today, Public relations - Specialization, Public relations - Methods tools and tactics, Public relations - General, Public relations - Audience targeting, Public relations - Politics and civil society, Public relations - Entertainment and celebrity, Public relations - Ethical and social issues, Public relations - Public relations in fiction, Public relations - Notes, Public relations - Books

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The fundamental assumption of the relational model is that all data are represented as mathematical relationships, i.e., a subset of the Cartesian product of n sets. In the mathematical model, reasoning about such data is done in two-valued predicate logic (that is, without NULLs), meaning there are two possible evaluations for each proposition: either true or false. Data are operated upon ...

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Relational model, Relational model - The model, Relational model - Competition, Relational model - History, Relational model - Misimplementation, Relational model - Implementation, Relational model - Controversies, Relational model - Design, Relational model - Example database, Relational model - Set Theory Formulation, Relational model - Key constraints and functional dependencies

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Foreign relations of Egypt - Arab Relations. The Arab League headquarters is in Cairo, and the Secretary General of the League is traditionally an Egyptian. Former Egyptian Foreign Minister Amr Moussa is the present Secretary General of the Arab League. Egyptian Deputy Prime Minister Boutros Boutros-Ghali served as Secretary General of the United Nations from 1991 to 1996. Egypt is on good terms with Libya and Sudan, its African neighbours, although it has a land dispute with Sudan over the Hala'ib Triangle ...

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Foreign relations of Egypt, Foreign relations of Egypt - Overview, Foreign relations of Egypt - EU Relations, Foreign relations of Egypt - Middle Eastern Relations, Foreign relations of Egypt - Arab Relations, Foreign relations of Egypt - Relations with Israel, Foreign relations of Egypt - Israeli-Palestinian conflict, Foreign relations of Egypt - US Relations, Foreign relations of Egypt - Military Cooperation, Foreign relations of Egypt - War on Terrorism, Foreign relations of Egypt - International Involvement

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The relational model was invented by Dr. Ted Codd as a general model of data, and subsequently maintained and developed by Chris Date and Hugh Darwen among others. In The Third Manifesto (1995) they show how the relational model can be extended with object-oriented features without compromising its fundamental principles. The foundation for the relational model included important works published by Georg Cantor (1874) and D.L Childs (1968). Cantor was a 19th century German mathematician who published a number of articles and was the p ...

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Relational model, Relational model - The model, Relational model - Competition, Relational model - History, Relational model - Misimplementation, Relational model - Implementation, Relational model - Controversies, Relational model - Design, Relational model - Example database, Relational model - Set Theory Formulation, Relational model - Key constraints and functional dependencies

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Other models are the hierarchical model and network model. Some systems using these older architectures are still in use today in data centers with high data volume needs or where existing systems are so complex and abstract it would be cost prohibitive to migrate to systems employing the relational model; also of note are newer object-oriented databases, even though many of them are DBMS-construction kits, rather than proper DBMSs. The relational model was the first formal database model. After it was defined, informal models were ma ...

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Relational model, Relational model - The model, Relational model - Competition, Relational model - History, Relational model - Misimplementation, Relational model - Implementation, Relational model - Controversies, Relational model - Design, Relational model - Example database, Relational model - Set Theory Formulation, Relational model - Key constraints and functional dependencies

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Public relations and publicity are not synonyms. Publicity is the spreading of information to gain public awareness in a product, service, candidate, etc. It is just one technique of public relations as listed in Methods, tools and tactics. ...

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Public relations, Public relations - Public relations versus publicity, Public relations - History, Public relations - The industry today, Public relations - Specialization, Public relations - Methods tools and tactics, Public relations - Politics and civil society, Public relations - Entertainment and celebrity, Public relations - Ethical and social issues, Public relations - Public relations in fiction, Public relations - Notes, Public relations - Books

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Definition and meaning of relational database:

relational database - a method of structuring data as collections of tables that are logically associated to each other by shared attributes. Any data element can be found in a relation by knowing the name of the table, the attribute (column) name, and the value of the primary key

(Source: US National Oceanic and Atmospheric Administration (NOAA) )

Also see these pages: Oceanography, Oceanography Sitemap, Coral Reef, Environment, Sustainability, Climate Change,

For more dictionary entries, see » Relations Dictionary

Public relations and publicity are not synonyms. Publicity is the spreading of information to gain public awareness in a product, service, candidate, etc. It is just one technique of public relations as listed in Methods, tools and tactics. ...

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Public relations, Public relations - Public relations versus publicity, Public relations - History, Public relations - The industry today, Public relations - Specialization, Public relations - Methods tools and tactics, Public relations - General, Public relations - Audience targeting, Public relations - Politics and civil society, Public relations - Entertainment and celebrity, Public relations - Ethical and social issues, Public relations - Public relations in fiction, Public relations - Notes, Public relations - Books

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By contrast, in classical physics all observables commute and the commutator would be zero; however, an analogous relation exists, which is obtained by replacing the commutator with the Poisson bracket and the constant with 1: {x,p} = 1 This observation led Dirac to postulate that, in general, the quantum counterparts of classical observables ...

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Canonical commutation relation, Canonical commutation relation - Relation to classical mechanics, Canonical commutation relation - Representations, Canonical commutation relation - Generalizations

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Canada maintains close links to the United Kingdom, with which it has strong historic ties and shares a monarch. It also remains a member of the Commonwealth. See also: Canada-United Kingdom relations Canada also has close, if sometimes turbulent, relations with France, partly for historical and linguistic reasons. See also: Canada-France relations One important difference between Canadian and American foreign policy has been in relations with communist states. Canada establ ...

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Foreign relations of Canada, Foreign relations of Canada - Early diplomatic history, Foreign relations of Canada - Canada-United States relations, Foreign relations of Canada - Multilateralism, Foreign relations of Canada - Other bilateral relations, Foreign relations of Canada - Administration, Foreign relations of Canada - Territorial and boundary disputes, Foreign relations of Canada - Selected dates of diplomatic representation abroad

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The history of international relations is often traced back to the Peace of Westphalia of 1648 where the modern states system was developed. The Westphalia settlement marked the start of a novel premise in international affairs: armed struggle was no longer defined as a contest between varieties of confessional truths, but rather, a dispute among secular "sovereigns". The final settlement of armed disputes, after Westphalia, was no longer the province of military contractors and theologians - but the termination of war fell wit ...

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International relations, International relations - International relations theory, International relations - History, International relations - Criticisms, International relations - Mechanisms of international relations, International relations - Official, International relations - Unofficial, International relations - Covert, International relations - Functional Concepts of International Relations, International relations - Journals, International relations - IR Schools, International relations - Associations

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The principal architect of the post-1944 foreign policy of neutrality was J.K. Paasikivi, who was President from 1946 to 1956. Urho Kekkonen, President from 1956 until 1981, further developed this policy, stressing that Finland should be an active rather than a passive neutral. This hehehehe policy is now popularly known as the uber policy “Paasikivi-Kekkonen Line.” Foreign relations of Finland - Humiliation. Finland signed the Paris Peace Treaty with the Allies in February 1947, which: co ...

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Foreign relations of Finland, Foreign relations of Finland - Relations With the Soviet Union and With Russia, Foreign relations of Finland - Humiliation, Foreign relations of Finland - Reassurance, Foreign relations of Finland - Multilateral Relations, Foreign relations of Finland - International organization participation

Read more here: » Foreign relations of Finland: Encyclopedia II - Foreign relations of Finland - Relations With the Soviet Union and With Russia

The principal architect of the post-1944 foreign policy of neutrality was J.K. Paasikivi, who was President from 1946 to 1956. Urho Kekkonen, President from 1956 until 1981, further developed this policy, stressing that Finland should be an active rather than a passive neutral. This policy is now popularly known as the “Paasikivi-Kekkonen Line.” Foreign relations of Finland - Humiliation. Finland signed the Paris Peace Treaty with the Allies in February 1947, which: confirmed Finland’s c ...

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Foreign relations of Finland, Foreign relations of Finland - Relations With the Soviet Union and With Russia, Foreign relations of Finland - Humiliation, Foreign relations of Finland - Reassurance, Foreign relations of Finland - Multilateral Relations, Foreign relations of Finland - International organization participation

Read more here: » Foreign relations of Finland: Encyclopedia II - Foreign relations of Finland - Relations With the Soviet Union and With Russia

Finnish foreign policy emphasizes its participation in multilateral organizations. Finland joined the United Nations in 1955 and the European Union in 1995. As noted, the country also is a member of NATO’s Partnership for Peace as well as an observer in the North Atlantic Cooperation Council and the Western European Union. Finland is well represented in the UN civil service in proportion to its population and belongs to several of its specialized and related agencies. Finnish troops have participated in UN peacekeeping activities si ...

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Foreign relations of Finland, Foreign relations of Finland - Relations With the Soviet Union and With Russia, Foreign relations of Finland - Humiliation, Foreign relations of Finland - Reassurance, Foreign relations of Finland - Multilateral Relations, Foreign relations of Finland - International organization participation

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In the 1950s M S Green and R Kubo proved an exact expression for linear transport coefficients which is valid for systems of arbitrary temperature, T, and density. They proved that linear transport coefficients are exactly related to the time dependence of equilibrium fluctuations in the conjugate flux, where β = 1 / (kT) with the Boltzmann constant k and V is the system volume. The integral is over the equilibrium flux autocorrelation function. At zero tim ...

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Green-Kubo relations, Green-Kubo relations - Thermal and mechanical transport processes, Green-Kubo relations - Linear constitutive relations, Green-Kubo relations - Green-Kubo relations, Green-Kubo relations - Nonlinear response and transient time correlation functions, Green-Kubo relations - Derivation of Green-Kubo relations from the fluctuation theorem and the central limit theorem, Green-Kubo relations - Summary

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Solutions to recurrence relations are found by systematic means, often by using generating functions (formal power series) or by noticing the fact that rn is a solution for particular values of r. Consider, for example, a recurrence relation of the form Suppose that it has a solution of the form an = rn. Substituting this guess in the recurrence relation, we find: Dividing through by r ...

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Recurrence relation, Recurrence relation - Linear homogeneous recurrence relations with constant coefficients, Recurrence relation - Solving linear recurrence relations, Recurrence relation - Solving inhomogeneous recurrence relations, Recurrence relation - Example: Fibonacci numbers, Recurrence relation - Relationship to differential equations

Read more here: » Recurrence relation: Encyclopedia II - Recurrence relation - Solving linear recurrence relations

Bangladesh is bordered on the west, north, and east by a 2,400-kilometer land frontier with India, and on the southeast by a land and water frontier (193 kilometers) with Burma. Foreign relations of Bangladesh - India. India is Bangladesh's most important neighbor. Geographic, cultural, historic, and commercial ties are strong, and both countries recognize the importance of good relations. During and immediately after Bangladesh's struggle for independence from Pakistan in 1971, India assisted refugees from East Pakistan, intervened militarily to hel ...

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Foreign relations of Bangladesh, Foreign relations of Bangladesh - Participation in Multilateral Organizations, Foreign relations of Bangladesh - Bilateral Relations With Other Nations, Foreign relations of Bangladesh - India, Foreign relations of Bangladesh - Pakistan, Foreign relations of Bangladesh - Burma, Foreign relations of Bangladesh - Former Soviet Union, Foreign relations of Bangladesh - People's Republic of China, Foreign relations of Bangladesh - Israel, Foreign relations of Bangladesh - Other countries in South Asia, Foreign relations of Bangladesh - Disputes - international, Foreign relations of Bangladesh - Illicit drugs, Foreign relations of Bangladesh - Reference

Read more here: » Foreign relations of Bangladesh: Encyclopedia II - Foreign relations of Bangladesh - Bilateral Relations With Other Nations

Foreign relations of Japan - United States. Main article: Japan-United States relations The United States is Japan's closest ally, and Japan relies on the U.S. for its national security to a high degree. As the world's two top economic powers (in 2005), both countries also rely on close economic ties for their wealth, despite ongoing and occasionally acriminious trade frictions. Although its constitution and government policy preclude an offensive military role for Japan in international affa ...

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Foreign relations of Japan, Foreign relations of Japan - Relations by country and region, Foreign relations of Japan - United States, Foreign relations of Japan - North and South Korea, Foreign relations of Japan - China, Foreign relations of Japan - South-East Asia, Foreign relations of Japan - South Asia, Foreign relations of Japan - Russia, Foreign relations of Japan - Western Europe, Foreign relations of Japan - Other countries, Foreign relations of Japan - Debates and frictions, Foreign relations of Japan - Disputed territories, Foreign relations of Japan - Reference

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The bilateral relationship between Canada and the United States is of extreme importance to Canada. About 85% of Canadian trade is with the United States. While there are disputed issues between the two nations, relations are close and the two countries famously share the "world's longest undefended border." Canada was a close ally of the United States in both World Wars, the Korean War and the Cold War. Canada was an original member of NATO and the two countries' air defences are fused in NORAD. ...

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Foreign relations of Canada, Foreign relations of Canada - Early diplomatic history, Foreign relations of Canada - Canada-United States relations, Foreign relations of Canada - Multilateralism, Foreign relations of Canada - Other bilateral relations, Foreign relations of Canada - Administration, Foreign relations of Canada - Territorial and boundary disputes, Foreign relations of Canada - Selected dates of diplomatic representation abroad

Read more here: » Foreign relations of Canada: Encyclopedia II - Foreign relations of Canada - Canada-United States relations

Economic relations of Japan - Asia. The developing nations of Asia grew rapidly as suppliers to and buyers from Japan. In 1990 these sources (including South Korea, Taiwan, Hong Kong, Singapore, Indonesia, and other countries in Southeast Asia) accounted for 28.8 percent of Japan's exports, a share well below the 34 percent value of 1960 but one that had been roughly constant since 1970. In 1990 developing Asian countries provided 23 percent of Japa ...

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Economic relations of Japan, Economic relations of Japan - Postwar development, Economic relations of Japan - 1960s, Economic relations of Japan - 1970s, Economic relations of Japan - 1980s, Economic relations of Japan - Foreign Investment, Economic relations of Japan - Relations by region, Economic relations of Japan - Asia, Economic relations of Japan - Middle East, Economic relations of Japan - Western Europe, Economic relations of Japan - Latin America, Economic relations of Japan - International Trade and Development Institutions, Economic relations of Japan - Reference

Read more here: » Economic relations of Japan: Encyclopedia II - Economic relations of Japan - Relations by region

Current relations between the United States and Taiwan are governed by the Taiwan Relations Act. In addition Taiwan has been mentioned in the Three Communiques between the United States and the People's Republic of China. According to the CIA World Factbook, "The U.S. has welcomed and encouraged the cross-Strait dialogue as a process which contributes to a reduction of tension and to an environment conducive to the eventual peaceful resolution of the outstanding differences between the two sides. The United States believe ...

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Foreign relations of the Republic of China, Foreign relations of the Republic of China - History, Foreign relations of the Republic of China - International disputes, Foreign relations of the Republic of China - List of countries with diplomatic relations with the ROC, Foreign relations of the Republic of China - U.S.-Taiwan Relations, Foreign relations of the Republic of China - Diplomatic representation in the US, Foreign relations of the Republic of China - Diplomatic representation from the US, Foreign relations of the Republic of China - Relations with the People's Republic of China, Foreign relations of the Republic of China - Relations with other countries, Foreign relations of the Republic of China - International organization participation, Foreign relations of the Republic of China - External link

Read more here: » Foreign relations of the Republic of China: Encyclopedia II - Foreign relations of the Republic of China - U.S.-Taiwan Relations

The history of international relations is often traced back to the Peace of Westphalia of 1648 where the modern states system was developed. The Westphalia settlement marked the start of a novel premise in international affairs: armed struggle was no longer defined as a contest between varieties of confessional truths, but rather, a dispute among secular "sovereigns". The final settlement of armed disputes, after Westphalia, was no longer the province of military contractors and theologians - but the termination of war fell within the purview of an identifiable coterie of a new class: Professional dipl ...

See also:

International relations, International relations - International relations theory, International relations - History, International relations - Criticisms, International relations - Mechanisms of international relations, International relations - Official, International relations - Unofficial, International relations - Covert, International relations - Functional Concepts of International Relations, International relations - Journals, International relations - IR Schools, International relations - Associations

Read more here: » International relations: Encyclopedia II - International relations - History