全文获取类型
收费全文 | 2191篇 |
免费 | 38篇 |
国内免费 | 2篇 |
专业分类
教育 | 1732篇 |
科学研究 | 76篇 |
各国文化 | 25篇 |
体育 | 102篇 |
综合类 | 1篇 |
文化理论 | 13篇 |
信息传播 | 282篇 |
出版年
2023年 | 14篇 |
2022年 | 18篇 |
2021年 | 24篇 |
2020年 | 46篇 |
2019年 | 86篇 |
2018年 | 92篇 |
2017年 | 93篇 |
2016年 | 95篇 |
2015年 | 49篇 |
2014年 | 92篇 |
2013年 | 512篇 |
2012年 | 61篇 |
2011年 | 70篇 |
2010年 | 52篇 |
2009年 | 53篇 |
2008年 | 92篇 |
2007年 | 60篇 |
2006年 | 62篇 |
2005年 | 52篇 |
2004年 | 48篇 |
2003年 | 56篇 |
2002年 | 29篇 |
2001年 | 30篇 |
2000年 | 30篇 |
1999年 | 28篇 |
1998年 | 26篇 |
1997年 | 25篇 |
1996年 | 32篇 |
1995年 | 23篇 |
1994年 | 29篇 |
1993年 | 18篇 |
1992年 | 22篇 |
1991年 | 13篇 |
1990年 | 17篇 |
1989年 | 20篇 |
1988年 | 15篇 |
1987年 | 8篇 |
1986年 | 8篇 |
1985年 | 12篇 |
1984年 | 10篇 |
1982年 | 8篇 |
1981年 | 7篇 |
1980年 | 8篇 |
1979年 | 8篇 |
1978年 | 7篇 |
1977年 | 7篇 |
1975年 | 7篇 |
1974年 | 7篇 |
1973年 | 6篇 |
1968年 | 6篇 |
排序方式: 共有2231条查询结果,搜索用时 15 毫秒
121.
Karen Burstein Craig J. Forsyth Raymond W. Biggar Sonya Hsu Steven Dick Paula Zeanah 《Journal of Criminal Justice Education》2017,28(3):411-427
Most youth in juvenile delinquent systems end up incarcerated due in part to poor decision-making skills. This study describes a theoretical framework undergirding the relationships across delinquency, learning climate, decision-making, and computational logic. This framework will inform a team of educators, criminologists, and psychologists, and their peers in computer science and mathematics, instructional software design, and content experts as they build and test an innovative instructional model for youth in secure care settings. The goal of the system is to improve human decision-making skills, while preparing youth for further education potentially leading to careers in STEM fields. 相似文献
122.
Karen G. Hales 《CBE life sciences education》2013,12(4):604-605
This edited volume of essays presents a countermainstream view against genetic underpinnings for cancer, behavior, and psychiatric conditions.This edited volume is a project from the Council of Responsible Genetics, a private organization based in Cambridge, Massachusetts, whose mission, as stated on its website, includes as one of several goals to “expose oversimplified and distorted scientific claims regarding the role of genetics in human disease, development and behavior.” This book represents such an effort. Editors Krimsky and Gruber are chair and president/executive director, respectively, of the organization and appear to have solicited contributions to the book from affiliates and other colleagues. Fewer than half of the 16 chapters are written by active laboratory scientists, however, and as a result, the book suffers from arguments clouded by imprecise use of terminology and preconceptions about genes and their functions. One might consider this book, or parts thereof, for an advanced undergraduate genetics class in which positions counter to the mainstream scientific view are presented and evaluated, and in which students are challenged to critically assess the quality of support for all arguments.The general theme of this book is to question the role of genes (and reproducible molecular mechanisms, more broadly) in cancer, behavior, psychiatric disorders, evolution, and other phenomena. One chapter promotes the tissue organization field theory (TOFT) against the somatic mutation theory of cancer. TOFT was proposed by the chapter authors in 2011 (Soto and Sonnenschein, 2011 ) but has not found traction and has garnered little attention beyond an initial refutation (Vaux, 2011 ). The authors assert that cancer is a disease of development and tissue repair primarily from environmental exposures and independent of genetic changes. Most cancer researchers agree that environmental factors can trigger cell growth but that ensuing mutations complete the picture in the genesis of malignancies. This chapter would be a good starting point from which one could assign students to explore papers cited in the Cancer Genome Atlas database, a growing resource compiling cancer genome data and subsequent validation in other systems of the effects of mutations found. In another chapter, a nonscientist author asserts that “in only a small percentage of cases are genes notable contributors to breast cancer,” implying imprecisely that only rare inherited cancer predisposition is genetic, when in fact cancer stemming from somatic mutations is also gene based. To assert that cancer stems only from environmental effects, to the exclusion of genes, overlooks the intertwining of the two arenas—radiation induces somatic mutations, for example, and estrogen mimics trigger cell division, which sets the stage for additional new mutations during DNA replication.
Open in a separate windowOther sections of the book argue a lack of evidence for genetic influence on behaviors and psychiatric conditions. One chapter centers on several refuted ideas of biology and behavior (for example XYY and monoamine oxidase genotypes associated with aggression), with the intended implication that all other biological connections to behavior must be suspect. A chapter on autism accepts but downplays a partial role of genetics in the disorder, while emphasizing environmental exposures. Students exploring this topic could examine the growing literature on de novo mutations found in autism patients (Huguet et al., 2013 ), among other autism studies, to see how interlocking causes of the disorder might best explained by the available data. In the context of disorders such as schizophrenia, the book does not acknowledge or address the literature reporting genetic associations with psychiatric predispositions. In a troubling instance, a cited reference is misrepresented as refuting a genetic connection to schizophrenia; the reference in question (Collins et al., 2012 ) actually reports genome-wide association studies showing linkage of schizophrenia to particular loci (just not to the genes originally suspected). The same research group the previous month reported copy number variations associated with schizophrenia (Kirov et al., 2012 ), but this finding was not cited. Psychiatric genetics is a rich area for students to explore, and the contrarian viewpoint of the book can provide a starting point to trigger students’ delving into the literature.Genetic Explanations: Sense and Nonsense includes two chapters with assertions counter to the neo-Darwinian synthesis of evolution. One claims, fairly misleadingly, that “a growing number of evolutionary biologists … believe that macroevolution was the result of mechanisms other than natural selection.” Another states that “not genomic DNA but epigenetic environmental influences … overwhelmingly affect our health and well being.” The idea that gene regulation via environmental and epigenetic effects is somehow not reducible to genes (and that genes are therefore not central to evolution) would be an interesting subject for students to explore in the literature to see what the data actually support.This book is recommended only for use in advanced classes centered on weighing evidence and dissecting arguments in scientific controversies. The book''s countermainstream assertion of a lack of significant genetic connection to cancer, autism, schizophrenia, and other phenomena provides multiple opportunities for students to explore the scientific literature surrounding such genetic connections. 相似文献
123.
Karen E. Broomhead 《Education 3-13》2013,41(8):877-888
ABSTRACTThis article details a study which investigated the social acceptance and friendships of children with SEND, and their typically developing peers, at a mainstream primary school in the North West of England. Participants were 29 children aged five and six years old, separated into three groups; typically developing children, children who were being monitored for SEND, and children with formally identified SENDs. With the use of a peer nomination sociometric technique, findings revealed that children with SEND had less promising peer relations and friendships compared to children tracked for SEND and their typically developing peers, consequently questioning the mainstream ‘ideal’. 相似文献
124.
When public catalog users enter queries that exactly match the catalog's controlled vocabulary, online systems should respond with browsing lists of alphabetically arranged subject headings, because such displays guide users to retrievals based on the assignment of the matched subject headings to bibliographic records. Unfortunately, studies of online catalog searching demonstrate that alphabetical displays are no longer capable of managing large numbers of subdivided forms of subject headings, because searchers exhibit low levels of perseverance when faced with large numbers of retrievals. This paper introduces a new approach to displaying retrieved subject headings in subject searching—the exact-display approach—designed to encourage users to browse bibliographic information. The purpose of this paper is to emphasize the importance of the exact-display approach by showing how many user queries would be candidates for this approach, demonstrate an implementation of the exact-display approach in an experimental online catalog, and feature end-user experiences with this approach as implemented in the experimental catalog. End-user experiences gave the authors the opportunity to make several recommendations for enhancing the original design of the exact-display approach so that future implementations of this approach in operational online catalogs are responsive to the needs of online catalog users. 相似文献
125.
126.
This article examines the significance of context in university students' development of (meta)cognitions related to a specific group assignment. For this purpose context was conceptualised at two levels: class (Business, Science) and small groups within class (culturally diverse, non-diverse). Diverging trends in (meta)cognitions emerged at class and small group levels, which reflected affordances and constraints of the learning contexts. The value of incorporating a cultural angle in research on group work was confirmed. Overall, the findings highlight the usefulness of a multi-layered learning contexts design for enhancing our understanding of the developing nature of students' multi-dimensional experiences of group work. 相似文献
127.
128.
In recent years, there has been an increase in students with refugee experience in the UK, the US, Europe and Australia. These
students face many barriers to education, and appropriately educating this diverse student population presents many challenges
to schools and education departments. We argue that a whole of school approach that includes school structures, culture and
pedagogy is needed to provide equity for students with refugee experience. This approach to reform requires that the ‘structures
and programs [that] are designed for a dominant group’ (DETE, South Australian Curriculum Standards and Accountability Framework,
South Australia 2001), and which disadvantage minority groups, are challenged and changed. Implementing such change raises many practical difficulties,
and there are few documented examples of good practice. This prompted the authors’ ethnographic study of a South Australian
primary school, with a New Arrivals Program, which positions itself as taking a whole of school approach to educational reform
for refugees. This paper reports on the structural changes the school has implemented in its class organisation, staff roles
and curriculum. We consider the effects of government funding and neoliberal education policy on these reforms. 相似文献
129.
130.