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1 SDLC
1) Компьютерная техника: System Data And Language Construct, Systems Development Language Control2) Военный термин: Synchronous Data Link Control, Systems Development Life Cycle4) Математика: протокол передачи данных5) Телекоммуникации: Serial Data Link Control6) Университет: Student Diversity Leadership Conference7) Вычислительная техника: Synchronous Data Link Control (IBM), Synchronous Data Link Control (IBM, SNA)8) Сетевые технологии: протокол SDLC, протокол управления синхронной передачей данных, протокол управления синхронным каналом передачи данных, синхронная система управления линиями передачи данных, синхронное управление передачей данных, System Development Life Cycle9) Интернет: Протокол передачи битовых потоков, подобный HDLC10) Расширение файла: Synchronous Data Link Control (protocol)11) Программное обеспечение: Software Development Life Cycle12) Базы данных: System Development Logic Control -
2 Theory
Neurath has likened science to a boat which, if we are to rebuild it, we must rebuild plank by plank while staying afloat in it. The philosopher and the scientist are in the same boat....Analyze theory-building how we will, we all must start in the middle. Our conceptual firsts are middle-sized, middle-distanced objects, and our introduction to them and to everything comes midway in the cultural evolution of the race. In assimilating this cultural fare we are little more aware of a distinction between report and invention, substance and style, cues and conceptualization, than we are of a distinction between the proteins and the carbohydrates of our material intake. Retrospectively we may distinguish the components of theory-building, as we distinguish the proteins and carbohydrates while subsisting on them. (Quine, 1960, pp. 4-6)Theories are usually introduced when previous study of a class of phenomena has revealed a system of uniformities.... Theories then seek to explain those regularities and, generally, to afford a deeper and more accurate understanding of the phenomena in question. To this end, a theory construes those phenomena as manifestations of entities and processes that lie behind or beneath them, as it were. (Hempel, 1966, p. 70)A strong approach [to construct validation] looks on construct validation as tough-minded testing of specific hypotheses:heoretical concepts are defined conceptually or implicitly by their role in a network of nomological or statistical "laws." The meaning is partially given by the theoretical network, however tentative and as yet impoverished that network may be. Crudely put, you know what you mean by an entity to the extent that statements about it in the theoretical language are linked to statements in the observational language. These statements are about where it's found, what it does, what it's made of. Only a few of those properties are directly tied to observables [p. 136]. In [an early] theory sketch, based upon some experience and data, everything said is conjectural. We have tentative notions about some indicators of the construct with unknown validities [p. 144]. [When we check up empirically on predictions from the model] we are testing the crude theory sketch, we are tightening the network psychometrically, and we are validating the indicators. All of these are done simultaneously [p. 149]. [Extracted with elisions and some paraphrase from Meehl & Golden, 1982.] (Cronbach, 1990, p. 183)Historical dictionary of quotations in cognitive science > Theory
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