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Despite the significant role of oral presentation in the academic context, many university students evade opportunities for participation due to low self-efficacy. The present study has been conducted to compare oral presentation self-efficacy of English as a Foreign Language (EFL) learners with undergraduates and postgraduates of Non-EFL majors, and to investigate the relationship of this construct with their teaching and prior academic oral presentation experiences as two modes of Bandura’s [(1995). Exercise of personal and collective efficacy in changing societies. In A. Bandura (Ed.), Self-efficacy in changing societies (pp. 1–45). New York: Cambridge University Press] mastery experience. Extracting the oral presentation sub-skills from the literature, an oral presentation self-efficacy questionnaire with 38 five-Likert scale items was constructed. A two-way between-group ANOVA was run on the responses of a total 48 postgraduates (25 EFL and 23 Non-EFL) and 63 undergraduates (28 EFL and 35 Non-EFL) selected randomly from two of the universities in Iran. The results indicated no difference between EFL and Non-EFL students, whether at undergraduate or postgraduate level, in terms of their oral presentation self-efficacy. Spearman’s correlation coefficient, however, showed a strong positive correlation between the two modes of mastery experience and oral presentation self-efficacy (r?=?.44, n?=?111, P?.01; r?=?.42, n?=?111, P?.01). With no difference in oral presentation self-efficacy of university students at various academic disciplines and levels, it seems that oral courses in the EFL curriculum have not contributed to the benefit of EFL students’ oral presentation self-efficacy. Teaching and academic experiences, however, have played a key role in enhancing self-efficacy particularly in EFL postgraduate students who have a higher chance of gaining teaching experience. The results suggest the need for curriculum developers and lecturers to introduce more courses on oral presentation skills at universities. 相似文献
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Adopting an intradisciplinary perspective, this article evaluates the information-seeking behavior of academics from different subfields of physics and astronomy. It investigates the effect of interdisciplinarity (reliance on the literature of other subjects) and the scatter of literature on two aspects of the information-seeking behavior: methods used for keeping up-to-date and for identifying articles. To this end a survey of 114 PhD students and staff at the Department of Physics and Astronomy at the University College London was carried out. The findings showed that the subfields that are more interdisciplinary or have a more scattered literature are more likely to use general search facilities for finding information. The study also showed that cross-disciplinary use of the literature is not necessarily an indicator of scattered literature. The study reveals intradisciplinary differences among physicists and astronomers in terms of their information-seeking behavior and highlights the risk of overlooking the characteristics of information-seeking behavior of specialized subject communities by focusing on very broad subject categories. 相似文献
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European Journal of Psychology of Education - Theoretical developments in second or foreign language motivation research have led to a better understanding of the convoluted nature of motivation in... 相似文献
127.
Reza Gharibi Amir Hossein Rasekh Mohammad Hadi Sadreddini Seyed Mostafa Fakhrahmad 《Information processing & management》2018,54(6):1058-1076
Bug reports are an essential part of a software project's life cycle since resolving them improves the project's quality. When a new bug report is received, developers usually need to reproduce the bug and perform code review to locate the bug and assign it to be fixed. However, the huge number of bug reports and the increasing size of software projects make this process tedious and time-consuming. To solve this issue, bug localization techniques try to rank all the source files of a project with respect to how likely they are to contain a bug. This process reduces the search space of source files and helps developers to find relevant source files quicker. In this paper, we propose a multi-component bug localization approach that leverages different textual properties of bug reports and source files as well as the relations between previously fixed bug reports and a newly received one. Our approach uses information retrieval, textual matching, stack trace analysis, and multi-label classification to improve the performance of bug localization. We evaluate the performance of the proposed approach on three open source software projects (i.e., AspectJ, SWT, and ZXing) and the results show that it can rank appropriate source files for more than 52% of bugs by recommending only one source file and 78% by recommending ten files. It also improves the MRR and MAP values compared to several existing state-of-the-art bug localization approaches. 相似文献
128.
This study explored the impact of explicit teaching of reading strategies on English-as-a-foreign-language (EFL) students?? reading performance in Iran. The study employed a questionnaire adapted from Chamot and O??Malley??s (1994) cognitive and metacognitive strategies framework. To test the effects of explicit teaching of cognitive and metacognitive reading strategies on reading performance and strategy transfer, the study has a quasi-experimental design involving a contrast group and a treatment group, with whom an intervention program was implemented. The treatment group achieved significantly better results than the contrast group after four months of strategy-based instruction. Results of paired-sample t-tests and independent t-tests and effect size showed that reading comprehension and reading strategy use improved with strategy instruction. Moreover, SPANOVA analyses showed that the participants in the treatment group performed better than those in the contrast group in reading comprehension and reading strategy transfer. Results also showed that strategy instruction contributed to autonomous reading behaviors. Recommendations for further research are discussed. 相似文献
129.
Zariyantey Abdul Hamid Siti Balkis Budin Ng Wen Jie Asmah Hamid Khairana Husain Jamaludin Mohamed 《Journal of Zhejiang University. Science. B》2012,13(3):176-185
Paracetamol (PCM) overdose can cause nephrotoxicity with oxidative stress as one of the possible mechanisms mediating the
event. In this study, the effects of ethyl acetate extract of Zingiber zerumbet rhizome [200 mg per kg of body weight (mg/kg) and 400 mg/kg] on PCM-induced nephrotoxicity were examined. Rats were divided
into five groups containing 10 rats each. The control group received distilled water while other groups were treated with
extract alone (400 mg/kg), PCM alone (750 mg/kg), 750 mg/kg PCM+200 mg/kg extract (PCM+ 200-extract), and 750 mg/kg PCM+400
mg/kg extract (PCM+400-extract), respectively, for seven consecutive days. The Z. zerumbet extract was given intraperitoneally concurrent with oral administration of PCM. Treatment with Z. zerumbet extract at doses of 200 and 400 mg/kg prevented the PCM-induced nephrotoxicity and oxidative impairments of the kidney, as
evidenced by a significantly reduced (P<0.05) level of plasma creatinine, plasma and renal malondialdehyde (MDA), plasma protein carbonyl, and renal advanced oxidation
protein product (AOPP). Furthermore, both doses were also able to induce a significant increment (P<0.05) of plasma and renal levels of glutathione (GSH) and plasma superoxide dismutase (SOD) activity. The nephroprotective
effects of Z. zerumbet extract were confirmed by a reduced intensity of renal cellular damage, as evidenced by histological findings. Moreover,
Z. zerumbet extract administered at 400 mg/kg was found to show greater protective effects than that at 200 mg/kg. In conclusion, ethyl
acetate extract of Z. zerumbet rhizome has a protective role against PCM-induced nephrotoxicity and the process is probably mediated through its antioxidant
properties. 相似文献
130.
The present study investigates English language teaching (ELT) curriculum planning in Iran's Ministry of Education and its implementation by teachers. We studied programme evaluation; needs analysis; the ELT-specific documents; communication channels between planning and practice levels; teacher evaluation and student assessment; interpretation and re-examination of national policies within the Ministry; and the criteria set for ELT material development. Instrumentation included: curriculum documents; interviews with Ministry officials, material developers and headteachers; and teacher questionnaires. Results attested to the lack of any ELT-specific document for material development and absence of research-based needs assessment as the foundation of the programmes. Also, there are no pre-defined linguistic and professional criteria for evaluating teachers, and planning for students' assessment is limited to a set of general guidelines. Moreover, there is neither a programme evaluation nor an ELT evaluation model and national-level policies are not re-examined at planning level. Results also indicate that politico-ideological beliefs of material developers are as important as their expertise and communication channels between planning and practice levels are of a top-down nature. It is argued that the gap between planning and practice results from a highly centralised policymaking process in which local policymakers (i.e. teachers) are not involved. 相似文献