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Willem Saris
Willem Egbert (Wim) Saris (born 8 July 1943) is a Dutch sociologist and Emeritus Professor of Statistics and Methodology, especially known for his work on "Causal modelling in non-experimental research" and measurement errors (for example, MTMM analyses and development of the Survey Quality Predictor (SQP) program). Biography Saris was born in Leiden, South Holland, Netherlands, in 1943. He finished his study of Sociology at the Utrecht University in 1968 and earned his PhD from the University of Amsterdam in 1979. He became full professor in political science, especially the methodology of the social sciences in 1983. Till 2001, he was working at the University of Amsterdam. In 1984, he created the Sociometric Research Foundation in order to improve social science research by the application of statistics. In 1998, he became member of the methodology group that facilitated the creation of the European Social Survey (ESS). As a consequence, he was also member of the Central ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
European Survey Research Association
{{Use dmy dates, date=July 2013 The European Survey Research Association (ESRA) was founded in 2005 to provide coordination in the field of Survey Research in Europe. According to the website, ESRA's main goal is to encourage communication between methodologists and researchers in substantive fields such as sociology, psychology, political science, and other disciplines employing survey data. Its main two activities are the biannual conferences on survey research, and the open access journal Survey Research Methods (SRM). Established in January 2007, Survey Research Methods (SRM) is the official journal of the European Survey Research Association. This young peer-reviewed journal aims to be a high quality scientific publication that will be of interest to researchers in all disciplines involved in the design, implementation and analysis of statistical surveys. The journal is published electronically with free and open access via the internet. The first issue was published 31 Jan ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
American Association For Public Opinion Research
The American Association for Public Opinion Research (AAPOR) is a professional organization of more than 2,000 public opinion and survey research professionals in the United States and from around the world, with members from academia, media, government, the non-profit sector and private industry. AAPOR publishes three academic journals: Public Opinion Quarterly', Survey Practice' and the Journal for Survey Statistics and Methodology'. It holds an annual research conference and maintains a " Code of Professional Ethics and Practices", for survey research which all members agree to follow. The association's founders include pioneering pollsters Archibald Crossley, George Gallup, and Elmo Roper. AAPOR's stated principle is that public opinion research is essential to a healthy democracy, providing information crucial to informed policy-making and giving voice to people's beliefs, attitudes and desires. Through its annual conference, standards and ethics codes and publications, AAPO ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
University Of Debrecen
ThUniversity of Debrecen( hu, Debreceni Egyetem) is a university located in Debrecen, Hungary. It is the oldest continuously operating institution of higher education in Hungary ever since its establishment in 1538 by Suleiman the Magnificent following the Ottoman conquest of the Kingdom after the Battle of Mohács (1526). The university has a well established programme in the English language for international students, particularly in the Medical and Engineering field, which first established education in English in 1886. There are nearly 6000 international students studying at the university. Until 2014 technical Academy Awards (Oscars) have been awarded to five former students. The university also operates an associated Basic Medicine campus in Geochang County, South Korea. The University of Debrecen's acceptance rate is 25% making it one of the most competitive universities in Central Europe. University of Debrecen is ranked 501st in QS World University Rankings by Top Un ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
World Association For Public Opinion Research
The World Association for Public Opinion Research (WAPOR) is an international professional association of researchers in the field of survey research. It is a member organization of the International Science Council. History Established in 1947 at the Second International Conference on Public Opinion Research held in Williamstown, Massachusetts as the World Congress on Public Opinion Research, the association acquired its current name in 1948, at the Third International Conference on Public Opinion Research. In 1953, it became the sole nongovernment consultant organization to UNESCO in the field of polling. Its current president is Timothy P. Johnson (University of Illinois Chicago) and the vice president is Robert Chung ( Hong Kong Public Opinion Research Institute, in Hong Kong). Among the former presidents of WAPOR are Juan Linz, Elisabeth Noelle-Neumann, Robert Worcester and Seymour Martin Lipset. Membership Over time, WAPOR's membership has grown and become more ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Microsoft Windows
Windows is a group of several Proprietary software, proprietary graphical user interface, graphical operating system families developed and marketed by Microsoft. Each family caters to a certain sector of the computing industry. For example, Windows NT for consumers, Windows Server for servers, and Windows IoT for embedded systems. Defunct Windows families include Windows 9x, Windows Mobile, and Windows Phone. The first version of Windows was released on November 20, 1985, as a graphical operating system shell for MS-DOS in response to the growing interest in graphical user interfaces (GUIs). Windows is the most popular desktop operating system in the world, with Usage share of operating systems, 75% market share , according to StatCounter. However, Windows is not the most used operating system when including both mobile and desktop OSes, due to Android (operating system), Android's massive growth. , the most recent version of Windows is Windows 11 for consumer Personal compu ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
MS-DOS
MS-DOS ( ; acronym for Microsoft Disk Operating System, also known as Microsoft DOS) is an operating system for x86-based personal computers mostly developed by Microsoft. Collectively, MS-DOS, its rebranding as IBM PC DOS, and a few operating systems attempting to be compatible with MS-DOS, are sometimes referred to as "DOS" (which is also the generic acronym for disk operating system). MS-DOS was the main operating system for IBM PC compatibles during the 1980s, from which point it was gradually superseded by operating systems offering a graphical user interface (GUI), in various generations of the graphical Microsoft Windows operating system. IBM licensed and re-released it in 1981 as PC DOS 1.0 for use in its PCs. Although MS-DOS and PC DOS were initially developed in parallel by Microsoft and IBM, the two products diverged after twelve years, in 1993, with recognizable differences in compatibility, syntax, and capabilities. Beginning in 1988 with DR-DOS, Co ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Validity (logic)
In logic, specifically in deductive reasoning, an argument is valid if and only if it takes a form that makes it impossible for the premises to be true and the conclusion nevertheless to be false. It is not required for a valid argument to have premises that are actually true, but to have premises that, if they were true, would guarantee the truth of the argument's conclusion. Valid arguments must be clearly expressed by means of sentences called well-formed formulas (also called ''wffs'' or simply ''formulas''). The validity of an argument can be tested, proved or disproved, and depends on its logical form. Arguments In logic, an argument is a set of statements expressing the ''premises'' (whatever consists of empirical evidences and axiomatic truths) and an ''evidence-based conclusion.'' An argument is ''valid'' if and only if it would be contradictory for the conclusion to be false if all of the premises are true. Validity doesn't require the truth of the premises, ins ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Measurement Error
Observational error (or measurement error) is the difference between a measured value of a quantity and its true value.Dodge, Y. (2003) ''The Oxford Dictionary of Statistical Terms'', OUP. In statistics, an error is not necessarily a "mistake". Variability is an inherent part of the results of measurements and of the measurement process. Measurement errors can be divided into two components: ''random'' and ''systematic''. Random errors are errors in measurement that lead to measurable values being inconsistent when repeated measurements of a constant attribute or quantity are taken. Systematic errors are errors that are not determined by chance but are introduced by repeatable processes inherent to the system. Systematic error may also refer to an error with a non-zero mean, the effect of which is not reduced when observations are averaged. Measurement errors can be summarized in terms of accuracy and precision. Measurement error should not be confused with measuremen ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Structural Equation Modelling
Structural equation modeling (SEM) is a label for a diverse set of methods used by scientists in both experimental and observational research across the sciences, business, and other fields. It is used most in the social and behavioral sciences. A definition of SEM is difficult without reference to highly technical language, but a good starting place is the name itself. SEM involves the construction of a ''model'', to represent how various aspects of an observable or theoretical phenomenon are thought to be causally structurally related to one another. The ''structural'' aspect of the model implies theoretical associations between variables that represent the phenomenon under investigation. The postulated causal structuring is often depicted with arrows representing causal connections between variables (as in Figures 1 and 2) but these causal connections can be equivalently represented as equations. The causal structures imply that specific patterns of connections should appe ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Atomic Bombings Of Hiroshima And Nagasaki
The United States detonated two atomic bombs over the Japanese cities of Hiroshima and Nagasaki on 6 and 9 August 1945, respectively. The two bombings killed between 129,000 and 226,000 people, most of whom were civilians, and remain the only use of nuclear weapons in armed conflict so far. In the final year of World War II, the Allies of World War II, Allies prepared for a costly Operation Downfall, invasion of the Japanese mainland. This undertaking was preceded by a Air raids on Japan, conventional and firebombing campaign that devastated 64 Japanese cities. The European theatre of World War II, war in the European theatre concluded when Germany German Instrument of Surrender, surrendered on 8 May 1945, and the Allies turned their full attention to the Pacific War. By July 1945, the Allies' Manhattan Project had produced two types of atomic bombs: "Fat Man", a plutonium implosion-type nuclear weapon; and "Little Boy", an enriched uranium gun-type fission weapon. The 509th ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Cuban Missile Crisis
The Cuban Missile Crisis, also known as the October Crisis (of 1962) ( es, Crisis de Octubre) in Cuba, the Caribbean Crisis () in Russia, or the Missile Scare, was a 35-day (16 October – 20 November 1962) confrontation between the United States and the Soviet Union, which escalated into an international crisis when American deployments of missiles in Italy and Turkey were matched by Soviet deployments of similar ballistic missiles in Cuba. Despite the short time frame, the Cuban Missile Crisis remains a defining moment in national security and nuclear war preparation. The confrontation is often considered the closest the Cold War came to escalating into a full-scale nuclear war. In response to the presence of American Jupiter ballistic missiles in Italy and Turkey, the failed Bay of Pigs Invasion of 1961, and Soviet fears of a Cuban drift towards China, Soviet First Secretary Nikita Khrushchev agreed to Cuba's request to place nuclear missiles on the island t ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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