全文获取类型
收费全文 | 514篇 |
免费 | 14篇 |
国内免费 | 1篇 |
专业分类
教育 | 319篇 |
科学研究 | 129篇 |
各国文化 | 4篇 |
体育 | 29篇 |
综合类 | 4篇 |
文化理论 | 5篇 |
信息传播 | 39篇 |
出版年
2023年 | 9篇 |
2022年 | 10篇 |
2021年 | 22篇 |
2020年 | 11篇 |
2019年 | 30篇 |
2018年 | 30篇 |
2017年 | 43篇 |
2016年 | 23篇 |
2015年 | 22篇 |
2014年 | 33篇 |
2013年 | 63篇 |
2012年 | 37篇 |
2011年 | 20篇 |
2010年 | 26篇 |
2009年 | 22篇 |
2008年 | 25篇 |
2007年 | 14篇 |
2006年 | 9篇 |
2005年 | 11篇 |
2004年 | 10篇 |
2003年 | 9篇 |
2002年 | 11篇 |
2001年 | 6篇 |
2000年 | 7篇 |
1999年 | 1篇 |
1997年 | 1篇 |
1996年 | 2篇 |
1995年 | 1篇 |
1993年 | 2篇 |
1992年 | 2篇 |
1991年 | 3篇 |
1990年 | 2篇 |
1989年 | 2篇 |
1988年 | 1篇 |
1987年 | 1篇 |
1985年 | 1篇 |
1984年 | 1篇 |
1980年 | 1篇 |
1978年 | 1篇 |
1976年 | 1篇 |
1975年 | 1篇 |
1970年 | 1篇 |
1967年 | 1篇 |
排序方式: 共有529条查询结果,搜索用时 0 毫秒
71.
Anthoni Durage Asoka De Silva Ali Khatibi S. M. Ferdous Azam 《International Journal of Science and Mathematics Education》2018,16(1):47-67
The present study examined whether gender, ethnicity, instructional medium and school category differences manifest in science performance and motivation to learn science among secondary school students in Sri Lanka. The mean of five successive term test scores was used as the measure of science performance. Level of motivation in terms of six dimensions was measured by using the Science Motivation Questionnaire. A sample of 1316 grade 11 students representing Sinhala, Tamil, and Muslim ethnic groups from the three categories of public schools, which provide instructions in the vernacular languages of Sinhala or Tamil, participated in the study. Girls showed significantly higher performance in science compared to boys, and there was a significant gender difference in the levels of motivational dimensions in favor of girls. Although Tamil medium students possessed a higher level of motivation to learn science, Sinhala medium students outperformed their Tamil medium counterparts in science performance. Significant differences in science performance between Sinhala, Tamil, and Muslim students were also observed. However, motivation towards learning science between Tamils and Muslims was not significantly different. Highly significant differences in both motivation to learn science and performance in science were found between three categories of schools. The present study provides information to education officials who have to achieve equity across gender, ethnicity, medium of instruction, and school category, teachers who deliver the subject and school principals who design academic support programs. 相似文献
72.
Gholamhossein Mehralian Hamid Reza Rasekh Peyman Akhavan Ali Rajabzadeh Ghatari 《International Journal of Information Management》2013
During the last decade, intellectual capital (IC) and intangible assets have been widely considered as critical tool to deliver successful business in an intensive-knowledge environment. Accordingly, the main goal of this paper is therefore to develop and prioritize the most important indicators of intellectual capital in knowledge-based industries. Based on an extensive literature review, a valid and reliable questionnaire was designed. In order to data gathering, it was sent out to participants from both academic and university who qualified well in pharmaceutical practice. In order to exact prioritization of indicators, fuzzy TOPSIS technique as a MADM model was used. The fuzzy TOPSIS results revealed participants remark high concerns especially about knowledge and skills of managers and employees regarding to human capital, high concerns particularly about positive climate, ratio of investment in R&D and numbers of R&D projects according to structural capital, while considering the relational capital, more attention was paid to customers and strategic cooperation such as alliances and licensing. 相似文献
73.
local government authorities (LGAs) are organised around operational structures with business processes spanning within departments and across other government organisations. In such an organisational setting, the harmonisation of Information Technology (IT) operations, integration of cross-departmental processes and the underlying Information Systems (IS) signifies a challenge in delivering integrated services. This paper attempts to explore enterprise application integration (EAI) adoption in the UK local government authorities (LGAs). Despite the hype of EAI adoption in private domain, its application in LGAs is inadequate as there is a lack of adoption models/frameworks that can be used by the public sector. The context of the study is to consider the transformation of IT infrastructure management and operations with EAI technologies. The empirical findings, generated through a detailed case analysis, manifestly exemplify that EAI predominantly acts as a ‘back-office’ technology that facilitates operations by developing a flexible and maintainable integrated IT infrastructure. Our proposed framework is believed to be imperative and unique as it provides a more systematic way to examine the adoption of integration technologies, extends the established norms for EAI adoption by utilising a prioritisation technique to classify the importance of factors. The contribution of the research extends the literature on EAI and identifies theoretical and practical opportunities that facilitate LGAs in their decision-making process to produce more robust proposals for EAI adoption. 相似文献
74.
This paper seeks to trace the development of graduate studies in basic sciences in Turkish universities from origins to the present day. The study includes a sketch of the historical background of higher education from its start in medieval madrasahs and Istanbul Darulfunun (The House of Sciences), to the transition into present-day university education, i.e., to the beginnings of modern graduate study and the emergence of new universities. Empirical statistics are given to substantiate the rapid growth of graduate study and of the number of degrees produced since the 1980s. The mean number of Ph.D. Degrees per year has increased from a few in a single university in the 1930s to nearly a hundred in today's twenty seven universities in Turkey in the 1980s. Finally, a quantitative overview of the growth trends in graduate study in basic sciences as well as an assessment of the present degree productivity of Turkish universities are presented. 相似文献
75.
Although group project concepts and skills have become a major component in most information systems (IS) academic programs, very little research has attempted to examine factors that may improve or undermine effectiveness of IS group projects. Accordingly, based on relevant literatures, this study develops and empirically tests a model of factors affecting IS group project effectiveness. The research model posits that group cohesion and group efficacy will have positive effects on group effectiveness (project success and expected impact), whereas perceived loafing is expected to have a negative effect on IS group effectiveness. Data collected from 104 students working in 29 groups to complete semester‐long projects in two IS courses revealed that group efficacy had positive impact on group effectiveness and perceived loafing demonstrated a partial effect. Contrary to expectations, the impact of group cohesion was nonsignificant. These results could be useful in evaluating groups' potential for success and creating conditions conducive to enhancing effectiveness and success of IS student group projects. 相似文献
76.
The purpose of this article is to provide a brief analysis of the Japanese educational system and to give a somewhat detailed discussion of Japanese higher education. Its main conclusions are: although the bulk of higher education is catered for privately, the prestige institutions tend to be public ones; the character of the system as a whole seems to reflect Japanese society very clearly indeed since it supports high growth industries, reinforces the traditionally accepted distinction between the sexes, and determines both the structure of wages and salaries in general and its sex variance in particular; and that there are very serious problems currently confronting Japanese educationalists - these relate to the official inspection of textbooks, the emergence of anti-teacher violence within schools and the reduction in the size of the public subsidy to private education.The authors are extremely grateful for helpful comments and suggestions from Margaret B. Sutherland, Professor of Education, University of Leeds and Dr. Penny Francks, specialist on modern Japanese history at the Department of Chinese Studies, University of Leeds. However, the usual disclaimer applies.Ali M. El-Agraa is a Senior Lecturer in Economics, School of Economic Studies, University of Leeds, England and is the Visiting Professor in charge of International Economics and Middle Eastern Studies, Graduate School of International Relations, International University of Japan, Niigata for the period September 1984–August 1985. Akira Ichii is Professor of Economics, University of Chuo in Tokyo and is currently (April 1982–March 1984) a Visiting Fellow in the School of Economic Studies, University of Leeds. 相似文献
77.
A chaotic dynamical system is characterized by a positive averaged exponential separation of two neighboring trajectories over a chaotic attractor. Knowledge of the Largest Lyapunov Exponent λ1 of a dynamical system over a bounded attractor is necessary and sufficient for determining whether it is chaotic (λ1>0) or not (λ1≤0). We intended in this work to elaborate the connection between Local Lyapunov Exponents and the Largest Lyapunov Exponent where an altemative method to calculate λ1has emerged. Finally, we investigated some characteristics of the fixed points and periodic orbits embedded within a chaotic attractor which led to the conclusion of the existence of chaotic attractors that may not embed in any fixed point or periodic orbit within it. 相似文献
78.
79.
Within a transnational educational programme, students residing in the Czech Republic obtain baccalaureate degrees from an accredited American college. The college has a distinctive approach towards learning, co‐creation of knowledge and the use of mentors. Part of the degree assessment is an undergraduate dissertation, which serves as a capstone experience. The Czech partner instituted a policy whereby students could obtain a second local degree by, among other things, using the same dissertation. This study examines the situation confronting mentors from the American college. It considers assessment as an integral component of a constellation of educational assumptions and pedagogic values: a paradigm. It analyses the competing/conflicting, paradigms involved and discusses ways in which educational practice was reconsidered and changed to allow a single work product to be authentically and meaningfully assessed under both approaches. 相似文献
80.
Farzad Ashrafi Hafez Mohammadhassanzadeh Farhad Shokraneh Ali Valinejadi Karim Johari Nazanin Saemi Alireza Zali Niloofar Mohaghegh Hassan Ashayeri 《Health information and libraries journal》2012,29(4):323-332
Objective: The purpose of this study is to analyse Iranian scientific publications in the neuroscience subfields by librarians and neuroscientists, using Science Citation Index Expanded (SCIE) via Web of Science data over the period, 2002–2008. Methods: Data were retrieved from the SCIE. Data were collected from the ‘subject area’ of the database and classified by neuroscience experts into 14 subfields. To identify the citation patterns, we applied the ‘impact factor’ and the ‘number of publication’. Data were also analysed using HISTCITE, Excel 2007 and SPSS. Results: Seven hundred and thirty‐four papers have been published by Iranian between 2002 and 2008. Findings showed a growing trend of neuroscience papers in the last 3 years with most papers (264) classified in the neuropharmacology subfield. There were fewer papers in neurohistory, psychopharmacology and artificial intelligence. International contributions of authors were mostly in the neurology subfield, and ‘Collaboration Coefficient’ for the neuroscience subfields in Iran was 0.686 which is acceptable. Most international collaboration between Iranians and developed countries was from USA. Eighty‐seven percent of the published papers were in journals with the impact factor between 0 and 4; 25% of papers were published by the researchers affiliated to Tehran University of Medical Sciences. Conclusion: Progress of neuroscience in Iran is mostly seen in the neuropharmacology and the neurology subfields. Other subfields should also be considered as a research priority by health policymakers. As this study was carried out by the collaboration of librarians and neuroscientists, it has been proved valuable for both librarians and policymakers. This study may be encouraging for librarians from other developing countries. 相似文献