全文获取类型
收费全文 | 18332篇 |
免费 | 1735篇 |
国内免费 | 1120篇 |
出版年
2023年 | 232篇 |
2022年 | 223篇 |
2021年 | 323篇 |
2020年 | 612篇 |
2019年 | 703篇 |
2018年 | 662篇 |
2017年 | 789篇 |
2016年 | 774篇 |
2015年 | 519篇 |
2014年 | 618篇 |
2013年 | 2204篇 |
2012年 | 411篇 |
2011年 | 543篇 |
2010年 | 424篇 |
2009年 | 637篇 |
2008年 | 808篇 |
2007年 | 852篇 |
2006年 | 791篇 |
2005年 | 673篇 |
2004年 | 586篇 |
2003年 | 486篇 |
2002年 | 454篇 |
2001年 | 284篇 |
2000年 | 270篇 |
1999年 | 224篇 |
1998年 | 187篇 |
1997年 | 157篇 |
1996年 | 128篇 |
1995年 | 118篇 |
1994年 | 108篇 |
1993年 | 99篇 |
1992年 | 71篇 |
1991年 | 56篇 |
1990年 | 54篇 |
1989年 | 38篇 |
1988年 | 46篇 |
1987年 | 34篇 |
1985年 | 382篇 |
1984年 | 428篇 |
1983年 | 351篇 |
1982年 | 458篇 |
1981年 | 454篇 |
1980年 | 456篇 |
1979年 | 409篇 |
1978年 | 458篇 |
1977年 | 374篇 |
1976年 | 367篇 |
1975年 | 280篇 |
1974年 | 278篇 |
1973年 | 236篇 |
排序方式: 共有10000条查询结果,搜索用时 15 毫秒
281.
Although choices of required textbooks are important decisions in developing a course curriculum, faculty in marriage and family therapy training programs have few convenient resources to guide curriculum development. This article presents results of a survey of textbook selections of accredited marriage and family therapy programs within a regional affiliate of AAMFT. The five programs surveyed listed 108 different titles used in their curriculum. Only 12 texts were used by two programs, and only one text was used by more than two programs. This article presents the textbook selections by the six curricular areas of COAMFTE accreditation standards. The wide variety of textbooks used by programs leads us to conclude that no consensus exists about what textbooks best represent the core knowledge of marriage and family therapy. The body of knowledge taught in accredited marriage and family training programs reflects a distinct and autonomous body of knowledge. 相似文献
282.
The thesis of this paper is that even some of the most fundamental concepts of Marxism have been used and abused to fit their advocates' purposes. More specifically, the interpretation of the concept of the "dictatorship of the proletariat" has been subject to a dual development. First, the dictatorship of the proletariat has come to denote an increasingly violent regime. Second, the term has been used to refer to a rule exercised by an ever smaller segment of society. This paper seeks to analyze and elucidate this much disputed and frequently misunderstood Marxist concept. In the first part Marx's use of the term is examined. The second section explores how the same concept was explicated in the writings of some of the most important first generation Marxist thinkers and "practitioners" like Engels, Lenin, Kautsky, Bukharin, and Stalin. Following the summary of my findings I attempt to formulate some meaningful generalizations about the usage of the concept by Marxist thinkers. 相似文献
283.
Although societal need for behavioral science research is enormous, current research practices seem to be inefficient vehicles for producing knowledge that guides practical action. Many of our most popular theories provide little direct guidance for application. They focus on the development of models of the relationships among organismic events such as attitudes, self-efficacy expectations, and behavior, but pay little or no attention to the contextual influences on behavior. Such research is in keeping with a long-standing mechanistic tradition in psychology. We propose a version of contextualism as an alternative paradigm for the behavioral sciences. According to this paradigm, theories and research are evaluated in terms of their contribution to the prediction and influence of behavior. Basic research organized to pursue this goal has a direct bearing on how behavioral phenomena can be changed for practical purposes. Conversely, applied research contributes to basic understanding of the determinants of psychological phenomena. 相似文献
284.
Brian K. Martens Tracy A. Bradley Tanya L. Eckert 《Journal of applied behavior analysis》1997,30(3):569-572
We examined the effects of three reinforcement histories on the persistence of task engagement by 2 fourth-grade students using a partially counterbalanced ABCDBCD design. In each condition, an experimenter made four student contacts during the first 2 min of each session (reinforcement baseline), followed by an 8-min extinction period. The reinforcement history that contained an instructional control component produced the greatest persistence in student engagement. The applied relevance of instructional control is discussed. 相似文献
285.
Wayne W. Fisher Cathleen C. Piazza Lynn G. Bowman Gregory P. Hanley John D. Adelinis 《Journal of applied behavior analysis》1997,30(1):105-120
Mechanical restraints are commonly used to reduce the risks associated with severe self-injurious behavior (SIB), but may result in movement restriction and adverse side effects (e.g., bone demineralization). Restraint fading may provide a method for decreasing SIB while increasing movement and reducing these side effects. In the current investigation, rigid arm sleeves and restraint fading (gradually reducing the rigidity of the sleeves) were used with 3 clients who engaged in hand-to-head SIB. Restraints and fading reduced the hand-to-head SIB of all clients. However, for 1 client, the addition of a water mist procedure further reduced SIB to near-zero levels. For a 2nd client, another form of SIB developed that was not prevented by the rigid sleeves. For a 3rd client, a topography of SIB that was not physically prevented by the rigid sleeves was also reduced when restraints and fading were introduced. 相似文献
286.
Three students with moderate disabilities were taught to read and match-to-sample sight words comprising stimulus sets based upon the four food groups. We taught students conditional discriminations within four four-member sets using a single-sample/four-comparison procedure. Students were taught A-B, B-C, and C-D conditional discriminations for each of the four potential stimulus classes. Subsequent probes tested for relations based upon symmetry and one-node and two-node transitivity. The performances for all students indicated that symmetric relations emerged before one-node transitive relations, and that one-node transitive relations emerged before two-node transitive relations. These results are consistent with a pattern of responding, referred to as a "nodality effect," in which relations with fewer nodes are demonstrated prior to the demonstration of relations with a greater number of nodes. These results extend this area of research to sight-word reading for students with moderate disabilities. 相似文献
287.
Abstract. The recently suggested reformulation of Darwinian evolutionary theory, based on the thermodynamics of self-organizing processes, has strong philosophical implications. My claim is that the main philosophical merit of the thermodynamic approach, made especially clear in J.S. Wicken's work, is its insistence on the law-governed, continuous nature of evolution. I attempt to substantiate this claim following a historical analysis of beginning-of-the-century ideas on evolution and matter-life relationship, in particular, the fitness-of-the-environment-for-life theory of the Harvard physiologist L.J. Henderson. In addition, I point to an epistemological common ground underlying the studies of the “thermodynamics school” and other currently active research groups focusing on the emergence and evolution of biological organization. 相似文献
288.
Joel E. Haugen 《Zygon》1995,30(4):553-572
Abstract. A central aim of Ralph Wendell Burhoe's scientific theology is to define and interpret the meaning of human existence in relation to “ultimate reality.” As such, it can be understood as an exercise in theological anthropology. For Burhoe, this ultimate reality is “nature,” understood as the total reality system which is studied by the sciences and which the sciences are showing to be the sole determiner of the way things are. This article discusses various aspects of Burhoe's theological anthropology, as well as its value and credibility, and raises questions concerning his understanding of the value of the individual and the problems of evil and human sinfulness. 相似文献
289.
K. Helmut Reich 《Zygon》1995,30(3):383-405
Abstract. A strategy for deeding systematically with such complex relationships as those between science and theology is presented after a brief overview of the historical record and illustrated in terms of the concept of divinity. The application of that strategy to the title relationships yields a multilogical/multilevel solution which presents certain analogies to or isomorphisms with the doctrine of the Trinity. These concern mainly the multilogical/multilevel character of both conceptualizations and the relational and contextual reasoning required to conceive them. Furthermore, certain characteristics of the doctrine facilitate the dialogue between theologians and scientists on account of their similarity with such scientific concepts as diversity in unity, multiplicity of relationships, nonseparability, and nonclassical logic. 相似文献
290.
William A. Rottschaefer 《Zygon》1995,30(3):407-433
Abstract. B.F. Skinner allures us with the possibilities of turning the stones of materialistic rewards into the bread of human values. He tempts us by assuring success in achieving our goals through behavioral science, if only we give up our autonomy. He offers the power of complete control over our behaviors, on condition that we relinquish responsibility for our lives to a technological elite. Is B. F. Skinner a flesh-and-blood Grand Inquisitor? This essay tries to persuade the reader that Skinner's offers are worth considering. 相似文献