首页 | 本学科首页   官方微博 | 高级检索  
文章检索
  按 检索   检索词:      
出版年份:   被引次数:   他引次数: 提示:输入*表示无穷大
  收费全文   3041篇
  免费   71篇
  国内免费   1篇
教育   2306篇
科学研究   148篇
各国文化   44篇
体育   171篇
综合类   3篇
文化理论   36篇
信息传播   405篇
  2023年   18篇
  2022年   30篇
  2021年   55篇
  2020年   88篇
  2019年   140篇
  2018年   150篇
  2017年   174篇
  2016年   136篇
  2015年   99篇
  2014年   109篇
  2013年   757篇
  2012年   87篇
  2011年   93篇
  2010年   95篇
  2009年   71篇
  2008年   86篇
  2007年   63篇
  2006年   63篇
  2005年   60篇
  2004年   52篇
  2003年   43篇
  2002年   40篇
  2001年   28篇
  2000年   41篇
  1999年   31篇
  1998年   28篇
  1997年   23篇
  1996年   22篇
  1995年   17篇
  1994年   23篇
  1993年   21篇
  1992年   18篇
  1991年   17篇
  1990年   16篇
  1989年   13篇
  1988年   13篇
  1987年   15篇
  1986年   15篇
  1985年   19篇
  1984年   14篇
  1983年   18篇
  1982年   16篇
  1981年   9篇
  1980年   13篇
  1979年   15篇
  1978年   14篇
  1977年   9篇
  1975年   9篇
  1940年   8篇
  1933年   8篇
排序方式: 共有3113条查询结果,搜索用时 15 毫秒
91.
Selling the Free Market: The Rhetoric of Economic Correctness. By James Arnt Aune. New York: Guilford, 2001; pp. 217. $30.00.

The War Against the Poor. By Herbert Gans. New York: Basic, 1995; pp. 195. $12.60.

Created Unequal. By James Galbraith. Chicago: University of Chicago Press, 2000; pp. 368. $26.00.

Rich Media, Poor Democracy: Communication Politics in Dubious Times. By Robert McChesney. Urbana: University of Illinois, 1999; pp. 427. $34.95.

The Working Class Majority: America's Best‐Kept Secret. By Michael Zweig. Ithaca: Cornell University Press, 2000; pp. 208. $14.95.

While‐Collar Sweatshop. By Jill Andresky Fraser. New York: Norton, 2001; pp. 352. $26.95.

Protest and Popular Culture: Women in the U.S. Labor Movement, 7894–7917. By Mary E. Triece. Boulder: Westview, 2001; pp. 320. $44.00.

The Cultural Front. By Michael Denning. London: Verso, 1998; pp. 556. $22.00.  相似文献   
92.
The final report of the Joint Task Force on Computing Curricula (CC2001) suggests that an updated computer science curricula must reflect the broadening nature of our discipline. Two areas that are included in the CC2001 are software engineering (SE) and human-computer interaction (HCI). While the first inclination might be to incorporate HCI concepts into a traditional SE course, we propose a different approach. This paper outlines a project-oriented HCI course in which we are able to emphasize some SE notions in the context of HCI concepts. Our course is also a maturation class for our students because they are exposed to a number of non-programming computer science activities, including project specification, software and interface design, user testing, prototyping and use of guidelines. We include an overview of course content that illustrates our approach. We also describe our coverage of specific CC2001 knowledge units and provide some feedback data for our course.  相似文献   
93.
Canary, D. J., & Dainton, M. (Eds.) (2003). Maintaining relationships through communication: Relational, contextual, and cultural variations. Mahwah, NJ: Lawrence Erlbaum.  相似文献   
94.
ABSTRACT

In a quasiregular orthography like English, children inevitably encounter irregular words during reading. Previous research suggests successful reading of an irregular word depends at least partially on a child’s ability to address the mismatch between decoded form and stored word pronunciation, referred to as a child’s set for variability, and the word’s relative transparency, measured here using a spelling to pronunciation transparency rating. Item-level analyses were used to explore the relationship between general child performance on the set for variability mispronunciation task, word specific set for variability (predicting reading of that word), spelling to pronunciation transparency rating, and irregular word reading. Significant predictors included general word reading, general set for variability performance, and item-specific set for variability performance; word frequency and spelling to pronunciation transparency rating; and an interaction between word reading and the transparency rating. Results underscore the importance of considering both general and item-specific factors affecting irregular word reading.  相似文献   
95.
In small businesses with no employees, learning environments have a low learning readiness. Consequently, learners need to rely on their own agency to shape their learning experiences. Results from a study of agricultural entrepreneurs indicated that the components of motivation and self-regulated learning strategies shape learner's agency and explain learning environment configuration in small businesses with no employees. Configuration of the learning environment was found to be a weak determinant of the learning performance of these learners. However, results showed that prior performance of learners in small businesses with no employees dictates how their agency operates and what learning effect is achieved; higher prior performance results in higher learning effects. We conclude that mechanisms that underlie learning in traditional learning environments work similarly in learning environments in small businesses with no employees.  相似文献   
96.

This is a selective bibliography of 89 references on recruitment of minority students and faculty for graduate and professional schools and programs. Education, social sciences, and law literature were scanned for the years 1981 to 1991. Resources on recruitment in graduate and professional education are included, as well as a few relevant references of somewhat broader scope on diversity in higher education. This bibliography is divided into two parts: Part 1 is on student recruitment, Part 2 on faculty recruitment. Each part is subdivided into three sections—general literature, strategies and programs, and literature pertaining to particular fields of study or professions.  相似文献   
97.
Cognitive theory suggests that a key to expert performance lies in the internal organization of the expert's knowledge. The authors contend that the type of technical illustration used during instruction influences knowledge organization and greatly impacts students' understanding of the content. This paper describes an experimental study that tested the impact of one type of conceptual illustration on students' understanding of the structure, function, and behavior of complex technical systems. The results show that supplementing traditional technical instruction with functional flow diagrams can improve overall system understanding. The functional flow diagrams were also found to be an effective instructional aid for enhancing students' conceptual understanding of the causal behavior of systems. In addition, the use of the functional flow diagram was found to significantly improve the subjects' ability to construct conceptual models that were similar to those of an expert. The implications of using conceptual diagrams for technical instruction are discussed and recommendations for future research in this area are provided.  相似文献   
98.
Disoriented, punitive, and caregiving/role‐confused attachment behaviors are associated with psychopathology in childhood, but have not been assessed in adolescence. A total of 120 low‐income late adolescents (aged 18–23 years) and parents were assessed in a conflict‐resolution paradigm. Their interactions were coded with the Goal‐Corrected Partnership in Adolescence Coding Scales. Confirmatory factor analysis demonstrated that the three disorganized constructs (punitive, caregiving, and disoriented interaction) were best represented as distinct factors and were separable from a fourth factor for collaboration. The four factors were then assessed in relation to measures of attachment disorganization, partner abuse, and psychopathology. Results indicate that forms of disorganized behavior first described in early childhood can also be reliably assessed in adolescence and are associated with maladaptive outcomes across multiple domains.  相似文献   
99.
Biosynthetic microspheres have the potential to address some of the limitations in cell microencapsulation; however, the generation of biosynthetic hydrogel microspheres has not been investigated or applied to cell encapsulation. Droplet microfluidics has the potential to produce more uniform microspheres under conditions compatible with cell encapsulation. Therefore, the aim of this study was to understand the effect of process parameters on biosynthetic microsphere formation, size, and morphology with a co-flow microfluidic method. Poly(vinyl alcohol) (PVA), a synthetic hydrogel and heparin, a glycosaminoglycan were chosen as the hydrogels for this study. A capillary-based microfluidic droplet generation device was used, and by varying the flow rates of both the polymer and oil phases, the viscosity of the continuous oil phase, and the interfacial surface tension, monodisperse spheres were produced from ∼200 to 800 μm. The size and morphology were unaffected by the addition of heparin. The modulus of spheres was 397 and 335 kPa for PVA and PVA/heparin, respectively, and this was not different from the bulk gel modulus (312 and 365 for PVA and PVA/heparin, respectively). Mammalian cells encapsulated in the spheres had over 90% viability after 24 h in both PVA and PVA/heparin microspheres. After 28 days, viability was still over 90% for PVA-heparin spheres and was significantly higher than in PVA only spheres. The use of biosynthetic hydrogels with microfluidic and UV polymerisation methods offers an improved approach to long-term cell encapsulation.  相似文献   
100.
After discussing the distinction between artifacts and natural entities, and the distinction between artifacts and technology, the conditions of the traditional account of moral agency are identified. While computer system behavior meets four of the five conditions, it does not and cannot meet a key condition. Computer systems do not have mental states, and even if they could be construed as having mental states, they do not have intendings to act, which arise from an agent’s freedom. On the other hand, computer systems have intentionality, and because of this, they should not be dismissed from the realm of morality in the same way that natural objects are dismissed. Natural objects behave from necessity; computer systems and other artifacts behave from necessity after they are created and deployed, but, unlike natural objects, they are intentionally created and deployed. Failure to recognize the intentionality of computer systems and their connection to human intentionality and action hides the moral character of computer systems. Computer systems are components in human moral action. When humans act with artifacts, their actions are constituted by the intentionality and efficacy of the artifact which, in turn, has been constituted by the intentionality and efficacy of the artifact designer. All three components – artifact designer, artifact, and artifact user – are at work when there is an action and all three should be the focus of moral evaluation.  相似文献   
设为首页 | 免责声明 | 关于勤云 | 加入收藏

Copyright©北京勤云科技发展有限公司  京ICP备09084417号