全文获取类型
收费全文 | 1942篇 |
免费 | 28篇 |
专业分类
教育 | 1511篇 |
科学研究 | 64篇 |
各国文化 | 19篇 |
体育 | 207篇 |
文化理论 | 26篇 |
信息传播 | 143篇 |
出版年
2023年 | 16篇 |
2022年 | 25篇 |
2021年 | 31篇 |
2020年 | 57篇 |
2019年 | 92篇 |
2018年 | 132篇 |
2017年 | 112篇 |
2016年 | 116篇 |
2015年 | 87篇 |
2014年 | 74篇 |
2013年 | 458篇 |
2012年 | 68篇 |
2011年 | 60篇 |
2010年 | 36篇 |
2009年 | 40篇 |
2008年 | 32篇 |
2007年 | 34篇 |
2006年 | 29篇 |
2005年 | 25篇 |
2004年 | 28篇 |
2003年 | 29篇 |
2002年 | 31篇 |
2001年 | 18篇 |
2000年 | 21篇 |
1999年 | 15篇 |
1998年 | 9篇 |
1997年 | 17篇 |
1996年 | 22篇 |
1995年 | 24篇 |
1994年 | 20篇 |
1993年 | 20篇 |
1992年 | 7篇 |
1991年 | 14篇 |
1990年 | 12篇 |
1989年 | 10篇 |
1988年 | 9篇 |
1987年 | 9篇 |
1986年 | 12篇 |
1985年 | 11篇 |
1984年 | 10篇 |
1983年 | 10篇 |
1982年 | 11篇 |
1981年 | 5篇 |
1979年 | 8篇 |
1978年 | 9篇 |
1977年 | 8篇 |
1976年 | 14篇 |
1974年 | 6篇 |
1970年 | 4篇 |
1960年 | 3篇 |
排序方式: 共有1970条查询结果,搜索用时 312 毫秒
1.
2.
Kristjana Kristinsdóttir 《Archival Science》2003,3(2):199-204
The article sets off with a brief summary of the history of appraisal and disposal of records as processed at the National Archives of Iceland (NAI) since its establishment in 1882 to present times. Rules on appraisal and disposal of records introduced in 1900, 1911, and 1916 were ignored and all records were kept. Status quo remained until 1985 when a new National Archives Act was passed. The appraisal and disposal process adopted then is described and explained. It included the publication of instructions on records management as well as forms relating to records management. The influence of acts of law on the appraisal and disposal process is explained. Finally the experience with the arrangement of organised appraisal in Iceland is described. 相似文献
3.
4.
A brief commentary from the Museum Association of New York (MANY) on the unprecedented gap posed by baby-boomer retirement. Based, in part, on MANY's white paper, “Who's Next? Questioning the Future of Museum Leadership in New York State,” this essay deals with questions of succession, leadership and general differences in New York's museum community. 相似文献
5.
Debasis?GangulyEmail authorView authors OrcID profile Gareth?J.?F.?Jones Aarón?Ramírez-de-la-Cruz Gabriela?Ramírez-de-la-Rosa Esaú?Villatoro-Tello 《Information Retrieval》2018,21(1):1-23
Automatic detection of source code plagiarism is an important research field for both the commercial software industry and within the research community. Existing methods of plagiarism detection primarily involve exhaustive pairwise document comparison, which does not scale well for large software collections. To achieve scalability, we approach the problem from an information retrieval (IR) perspective. We retrieve a ranked list of candidate documents in response to a pseudo-query representation constructed from each source code document in the collection. The challenge in source code document retrieval is that the standard bag-of-words (BoW) representation model for such documents is likely to result in many false positives being retrieved, because of the use of identical programming language specific constructs and keywords. To address this problem, we make use of an abstract syntax tree (AST) representation of the source code documents. While the IR approach is efficient, it is essentially unsupervised in nature. To further improve its effectiveness, we apply a supervised classifier (pre-trained with features extracted from sample plagiarized source code pairs) on the top ranked retrieved documents. We report experiments on the SOCO-2014 dataset comprising 12K Java source files with almost 1M lines of code. Our experiments confirm that the AST based approach produces significantly better retrieval effectiveness than a standard BoW representation, i.e., the AST based approach is able to identify a higher number of plagiarized source code documents at top ranks in response to a query source code document. The supervised classifier, trained on features extracted from sample plagiarized source code pairs, is shown to effectively filter and thus further improve the ranked list of retrieved candidate plagiarized documents. 相似文献
6.
Ju‐Joan Wong Po‐Yu Chen Chun‐Di Chen 《The International Journal of Art & Design Education》2016,35(1):140-153
Professional training for designers is crucial in the field of design studies. The characteristics of novices versus those of expert designers have been identified in the literature; however, studies exploring the issue of professional training processes in the actual workplace are not well developed. Our study addresses the topic by using qualitative research methods along with flexible design. Collected data from the interviewees with different work experience were analysed by open, axial and selective coding. Herein, we argue that the processes by which a designer transforms from a novice into an expert in the industry are constructed through the interaction of several complicated factors. The re‐learning inherent in design professions is implemented through knowledge transfer gained from participation in design projects, particularly regarding tacit knowledge. Also, the novice's process of learning and training yields the characteristics and skills that companies and firms require of designers; this process involves a series of disciplinary sub‐processes, from destructive to reconstructive, implemented by employers. In these sub‐processes, the subjectivity of designers is neglected, leading to the suppression of imaginative expression and feelings of alienation among these workers. 相似文献
7.
Joan Abbott-Chapman 《The Australian Educational Researcher》2011,38(1):57-71
Research studies of post-school education and training conducted in Australia and internationally have revealed a mosaic of students’ education and employment experiences, with a multiplicity of nonlinear pathways. These tend to be more fragmentary
for disadvantaged students, especially those of low socio-economic background, rural students, and mature aged students seeking
a ‘second chance’ education. Challenges faced by students in their transitions to higher education are made more complex because
of the intersection of vertical stratification created by institutional and sectoral status hierarchies and segmentation,
especially relating to ‘academic’ and ‘vocational’ education and training, and the horizontal stratification of regional,
rural and remote locations in which students live. If we are to achieve the equity goals set by the Bradley Review (Bradley
et al., Review of Australian Higher Education Final Report, 2008) we need to acknowledge and work with the complex realities of disadvantaged students’ situations, starting at the school
level. Interrelated factors at the individual, community and institutional level which continue to inhibit student take-up
of higher education places are discussed in the context of discursive constructions of ‘disadvantage’ and ‘choice’ in late
modernity. Research highlights the need to facilitate students’ post-school transitions by developing student resilience,
institutional responsiveness and policy reflexivity through transformative education. 相似文献
8.
Józsa Krisztián Kis Noémi Barrett Karen Caplovitz 《European Journal of Psychology of Education - EJPE》2019,34(2):317-339
European Journal of Psychology of Education - Children’s motivation to master challenging tasks is an important predictor of school success, and yet, such motivation declines during... 相似文献
9.
The N1 effect is an electrophysiological marker of visual specialization for print. The phonological mapping hypothesis (Maurer & McCandliss, 2007) posits that the left-lateralized effect reflects grapheme-phoneme integration. In this event-related potential study, first (age = 7.06 years, N = 32) and third-grade readers (age = 9.29 years, N = 28) were presented with pairs of pseudowords and Armenian character strings in a novel implicit same-different paradigm. To test the phonological mapping hypothesis, stimuli were presented in visual-only and audiovisual conditions. The results demonstrated that tuning for print already emerges in first grade. Moreover, the parallel presentation of auditory stimuli enhanced the N1 effect suggesting a role of orthographic-phonological mapping in the development of specialization for print. 相似文献
10.