全文获取类型
收费全文 | 504篇 |
免费 | 2篇 |
国内免费 | 1篇 |
专业分类
教育 | 430篇 |
科学研究 | 15篇 |
各国文化 | 3篇 |
体育 | 15篇 |
综合类 | 2篇 |
文化理论 | 6篇 |
信息传播 | 36篇 |
出版年
2020年 | 5篇 |
2019年 | 8篇 |
2018年 | 7篇 |
2017年 | 9篇 |
2016年 | 13篇 |
2015年 | 12篇 |
2014年 | 15篇 |
2013年 | 132篇 |
2012年 | 8篇 |
2011年 | 6篇 |
2010年 | 7篇 |
2009年 | 5篇 |
2008年 | 6篇 |
2007年 | 4篇 |
2006年 | 7篇 |
2005年 | 9篇 |
2004年 | 7篇 |
2003年 | 7篇 |
2002年 | 4篇 |
2001年 | 4篇 |
2000年 | 10篇 |
1999年 | 5篇 |
1998年 | 11篇 |
1997年 | 7篇 |
1995年 | 13篇 |
1994年 | 5篇 |
1993年 | 6篇 |
1992年 | 14篇 |
1991年 | 4篇 |
1990年 | 11篇 |
1989年 | 7篇 |
1988年 | 7篇 |
1986年 | 4篇 |
1985年 | 6篇 |
1983年 | 5篇 |
1982年 | 9篇 |
1981年 | 5篇 |
1980年 | 5篇 |
1979年 | 9篇 |
1978年 | 8篇 |
1976年 | 4篇 |
1975年 | 4篇 |
1974年 | 5篇 |
1973年 | 5篇 |
1972年 | 5篇 |
1971年 | 6篇 |
1970年 | 10篇 |
1968年 | 6篇 |
1967年 | 3篇 |
1954年 | 3篇 |
排序方式: 共有507条查询结果,搜索用时 15 毫秒
411.
The literature concerning information flow and organizational design for technological innovation is summarized and a conceptual framework of the process of organized technological innovation within the firm is developed. The framework incorporates Rosenbloom's premise that corporate strategy can serve to cut across both internal and external boundaries of the firm and is shown to be consistent with the relevant organizational and planning literatures. The potential for using mathematical models to represent a firm's corporate strategy, budgeting and resource allocation activities is discussed. We argue that such models are needed to provide for policy analysis and could lead to a simulation capability that serves as a surrogate for real-life experimentation. 相似文献
412.
413.
414.
Current social and economic changes have created a challenging context for career counsellors. Within this context counsellors
are being asked to view their role from different perspectives. There is recognition of the importance of lifelong guidance
and also the need to view guidance from a broader social context with greater emphasis on social responsibility and ethics.
New forms of delivery are also emerging. These include an emphasis on client centred and holistic counselling, an affirmation
of narrative methods, and a more dynamic counselling approach. Lastly, there is the development of a number of new methods
of service delivery. Some examples include one stop counselling centres, virtual counselling services, mentoring, career coaching,
and the inclusion of social enterprises as part of the counselling process. The implementation of these changes has implications
for training, specialization and for accreditation. 相似文献
415.
Alasdair J.G. Gray Norman Gray Christopher W. Hall Iadh Ounis 《Information processing & management》2010
Astronomy, like many domains, already has several sets of terminology in general use, referred to as controlled vocabularies. For example, the keywords for tagging journal articles, or the taxonomy of terms used to label image files. These existing vocabularies can be encoded into skos, a W3C proposed recommendation for representing vocabularies on the Semantic Web, so that computer systems can help users to search for and discover resources tagged with vocabulary concepts. However, this requires a search mechanism to go from a user-supplied string to a vocabulary concept. 相似文献
416.
417.
Ethan R. Van Norman Peter M. Nelson David A. Klingbeil 《Psychology in the schools》2020,57(5):757-767
A fundamental assumption of multi-tiered systems of support is the bidirectional movement of students between tiers. In comparison to research on when to intensify instruction, less attention has been paid to the validity of decisions to exit students from supplemental supports. We used data from 554 third-grade students who met the criteria to be exited from a Tier 2 reading fluency intervention to answer two research questions. First, we used latent profile analysis to evaluate whether distinct profiles of student responding would emerge based upon initial skill level and intervention duration. Second, we evaluated whether the proportion of students who passed the end-of-year benchmark differed between profiles. Results favored a three-profile solution with a Below Average Start/Average Response; Average Start/Average Response; and an Above Average Start/Fast Response. The pooled mean proportion of students who did not achieve proficiency on the end-of-year benchmark assessment equaled 0.45, 0.33, and 0.13 across the three profiles, respectively. A series of χ2 tests indicated the between-profile differences were statistically significant (p < .05). The results of this study suggest that there may be distinct profiles amongst students who show positive response and exit Tier 2 reading fluency interventions. 相似文献
418.
Rolf Reber Hilde Hetland Weiqin Chen Elisabeth Norman Therese Kobbeltvedt 《学习科学杂志》2013,22(4):509-548
We investigated example choice as a new method for the teaching of formal theoretical principles. Formal principles are presented with several examples from different topics, and students choose the one that interests them most. Example choice might be related to prior knowledge, interest, or perceived control. In an experimental study, we examined the effects of degree of example choice and degree of prior knowledge on interest, perceived control, and learning outcomes in a presentation on confirmation bias. The main finding was that participants who could choose an example showed more interest in the presentation of the formal principle than participants who either were given an example by the experimenter or only saw the presentation. Control was lowest for the group without example choice and without prior knowledge. Finally, prior knowledge, but not example choice, increased performance on a transfer of knowledge task. Example choice thus offers a new approach for closing the gap between formal principles as presented at school and a student's interests. 相似文献
419.
Various surveys have documented widespread support among US parents, students, teachers and health professionals for school‐based comprehensive sexuality education. In many school districts, however, the sexuality education provided is minimal, incomplete or fragmented, and essential topics are often omitted or inaccurately presented. To help explain the discrepancy between support and accomplishment, this study develops a set of theory‐based research hypotheses regarding the potential motivational roles of stakeholders' goals, emotions and personal agency belief patterns in explaining this lack of achievement. A series of exploratory interviews and focus groups with 36 California parents, adolescents and professionals was conducted. A modified grounded‐theory approach was used to guide the collection and analysis of qualitative data, and the development of a theoretical framework anchored in Martin Ford's motivational systems theory. This framework suggests the complexity of the interacting factors involved, and provides a basis for specific hypotheses for further research. Potentially important goals, emotions and personal agency belief patterns are identified and discussed. 相似文献
420.
Zaid Khot Kaitlyn Quinlan Geoffrey R. Norman Bruce Wainman 《Anatomical sciences education》2013,6(4):211-215
There is increasing use of computer–based resources to teach anatomy, although no study has compared computer‐based learning to traditional. In this study, we examine the effectiveness of three formats of anatomy learning: (1) a virtual reality (VR) computer‐based module, (2) a static computer‐based module providing Key Views (KV), (3) a plastic model. We conducted a controlled trial in which 60 undergraduate students had ten minutes to study the names of 20 different pelvic structures. The outcome measure was a 25 item short answer test consisting of 15 nominal and 10 functional questions, based on a cadaveric pelvis. All subjects also took a brief mental rotations test (MRT) as a measure of spatial ability, used as a covariate in the analysis. Data were analyzed with repeated measures ANOVA. The group learning from the model performed significantly better than the other two groups on the nominal questions (Model 67%; KV 40%; VR 41%, Effect size 1.19 and 1.29, respectively). There was no difference between the KV and VR groups. There was no difference between the groups on the functional questions (Model 28%; KV, 23%, VR 25%). Computer‐based learning resources appear to have significant disadvantages compared to traditional specimens in learning nominal anatomy. Consistent with previous research, virtual reality shows no advantage over static presentation of key views. Anat Sci Educ 6: 211–215. © 2013 American Association of Anatomists. 相似文献