全文获取类型
收费全文 | 9293篇 |
免费 | 96篇 |
国内免费 | 18篇 |
专业分类
教育 | 6273篇 |
科学研究 | 1043篇 |
各国文化 | 90篇 |
体育 | 993篇 |
综合类 | 6篇 |
文化理论 | 96篇 |
信息传播 | 906篇 |
出版年
2021年 | 70篇 |
2020年 | 122篇 |
2019年 | 175篇 |
2018年 | 237篇 |
2017年 | 252篇 |
2016年 | 218篇 |
2015年 | 153篇 |
2014年 | 216篇 |
2013年 | 1689篇 |
2012年 | 199篇 |
2011年 | 196篇 |
2010年 | 170篇 |
2009年 | 152篇 |
2008年 | 169篇 |
2007年 | 193篇 |
2006年 | 160篇 |
2005年 | 150篇 |
2004年 | 141篇 |
2003年 | 168篇 |
2002年 | 138篇 |
2001年 | 157篇 |
2000年 | 157篇 |
1999年 | 155篇 |
1998年 | 72篇 |
1997年 | 74篇 |
1996年 | 109篇 |
1995年 | 77篇 |
1994年 | 95篇 |
1993年 | 87篇 |
1992年 | 153篇 |
1991年 | 146篇 |
1990年 | 137篇 |
1989年 | 136篇 |
1988年 | 114篇 |
1987年 | 116篇 |
1986年 | 138篇 |
1985年 | 134篇 |
1984年 | 107篇 |
1983年 | 129篇 |
1982年 | 110篇 |
1981年 | 104篇 |
1980年 | 93篇 |
1979年 | 165篇 |
1978年 | 110篇 |
1977年 | 108篇 |
1976年 | 104篇 |
1975年 | 79篇 |
1974年 | 89篇 |
1972年 | 70篇 |
1971年 | 70篇 |
排序方式: 共有9407条查询结果,搜索用时 15 毫秒
141.
William J. Meyer Patrick Morrison Anayansi Lombardero Kelsey Swingle Duncan G. Campbell 《Journal of College Student Psychotherapy》2016,30(3):197-205
Unwillingness to share depression experiences with primary care physicians contributes to the undertreatment of depression. This project examined college students’ reasons for depression nondisclosure to primary care providers (PCPs). Undergraduate participants read a vignette describing someone with depression and completed measures of disclosure barriers. Analyses indicated 26% of respondents would NOT disclose depression symptoms to PCPs. Reasons for nondisclosure included difficulty initiating the depression conversation, medication aversion, and fear of referral to a psychologist. Also, anger toward the vignette character varied with disclosure willingness, suggesting that nondisclosers feel more stigma than disclosers and are less likely to engage in psychotherapy. Because engagement in pharmacological and/or psychotherapeutic treatment requires identification of depression in healthcare settings, increased understanding of disclosure barriers could increase students’ access to depression treatment. 相似文献
142.
Foster , John , L. (Editor ). (1977). Reluctant to Read? Edinburgh Reading Tests - Stages 1 and 4 - Godfrey Thomson Unit. Dubin , F. and Olshtain , E. (1977). Facilitating Language Learning. Skitt , Frank . (1978). Themes for Language Learning. 相似文献
143.
144.
Antonio Gómez Skarmeta Pedro García López Jesús Egea Payá José Meseguer Navarro Tomás Jiménez García 《Academic Questions》1994,8(1):91-92
Books and articles of academic interest 相似文献
146.
Philip G. Altbach 《Prospects》1983,13(3):313-325
147.
A project in Sri Lanka sponsored by USAID AND the Overseas Education Fund (OEF) used nonformal training to prepare development workers to help women's groups orgnize income-generating projects. OEF and the Women's Bureau developed a 2-phase program for a toatl of 2 months training, which was separated by a 5-month period of field work. By the time the project came to an end in June 1982, development officers had helped rural women set up 2000 income-generating activities in Sri Lanka. their net profit was US $32,000 per month or an average of US $16 per woman. The profits from their activities surpassed the cost of the training project in less than a year. In the following year another 2000 activities were successfully started, so that beneficiaries, as of June, 1983 totalled over 22,000 people--4000 rural wmen and their families. The project, therefore, had a positive impact in a variety of areas: increased agricultural population, increased employment, increased participation of women in economic activities, development of institutional capability in rural areas, raised income of the rural poor and enhancement of health and nutrition. 相似文献
148.
Recent demographic trends and growth in the public sector of higher education have created severe strains for many private liberal arts colleges. The population ecology model, which explains the survival or demise of organizations in terms of their ability to negotiate for resources in their environment, provides a framework for assessing predictors of continued success among colleges. A three-way discriminant analysis based on the population ecology framework and other empirical research led to the successful classification of almost 72% of a sample of colleges in terms of their experiences during the 1970s. Number of departments, median state income, library holdings per enrollee, sectarian affiliation, annual tuition, Roman Catholic affiliation, and SAT composite score were found to be major predictors. 相似文献
149.
The effects of identical context on pattern recognition by pigeons for outline drawings of faces were investigated by training
pigeons to identify (Experiment 1) and categorize (Experiment 2) these stimuli according to the orientation of the mouth—an
upright U shape representing a smiling mouth or an inverted U shape representing a sad mouth. These target stimuli were presented
alone (Pair 1), with three dots in a triangular orientation to represent a nose and eyes (Pair 2), and with the face pattern
surrounded by an oval (Pair 3). In Experiment 1, the pigeons trained with Pair 1 were most accurate, those trained with Pair
2 were less so, and those trained with Pair 3 failed to acquire the discrimination within eighty 100-trial sessions. The same
ordering was found in Experiment 2 for pigeons trained on the three pairs simultaneously. The authors suggest that a contrasting
finding in humans, the face superiority effect, might be due to a gain in discriminability resulting from recognition of the
pattern as a face. An exemplar model of information processing that excludes linguistic coding accounts for the present results. 相似文献
150.
Kinetic knowledge is of great importance in achieving good control of the pyrolysis and gasification process and optimising
system design. An overall kinetic pyrolysis scheme is therefore addressed here. The kinetic modelling incorporates the following
basic steps: the degradation of the virgin biomass materials into primary products (tar, gas and semi-char), the decomposition
of primary tar into secondary products and the continuous interaction between primary gas and char. The last step is disregarded
completely by models in the literature. Analysis and comparison of predicted results from different kinetic schemes and experimental
data on our fixed bed pyrolyser yielded very positive evidence to support our kinetic scheme.
Project (No. 2001CB409600) Supported by the National Key Basic Research Program (973) of China 相似文献