全文获取类型
收费全文 | 3902篇 |
免费 | 1459篇 |
国内免费 | 113篇 |
出版年
2024年 | 3篇 |
2023年 | 13篇 |
2022年 | 18篇 |
2021年 | 91篇 |
2020年 | 106篇 |
2019年 | 397篇 |
2018年 | 294篇 |
2017年 | 407篇 |
2016年 | 380篇 |
2015年 | 348篇 |
2014年 | 326篇 |
2013年 | 546篇 |
2012年 | 302篇 |
2011年 | 251篇 |
2010年 | 282篇 |
2009年 | 251篇 |
2008年 | 246篇 |
2007年 | 184篇 |
2006年 | 161篇 |
2005年 | 176篇 |
2004年 | 125篇 |
2003年 | 120篇 |
2002年 | 116篇 |
2001年 | 95篇 |
2000年 | 79篇 |
1999年 | 48篇 |
1998年 | 13篇 |
1997年 | 10篇 |
1996年 | 10篇 |
1995年 | 10篇 |
1994年 | 10篇 |
1993年 | 7篇 |
1992年 | 10篇 |
1991年 | 7篇 |
1990年 | 4篇 |
1989年 | 2篇 |
1986年 | 4篇 |
1985年 | 2篇 |
1984年 | 4篇 |
1982年 | 2篇 |
1981年 | 1篇 |
1980年 | 1篇 |
1979年 | 2篇 |
1977年 | 1篇 |
1976年 | 1篇 |
1975年 | 2篇 |
1974年 | 2篇 |
1973年 | 1篇 |
1968年 | 1篇 |
1931年 | 1篇 |
排序方式: 共有5474条查询结果,搜索用时 15 毫秒
801.
农村初中留守儿童心理健康问题研究 总被引:9,自引:0,他引:9
采用心理健康诊断测验和青少年心理健康素质量表对湖南省祁阳县两所农村初级中学280名学生进行整群抽样调查,结果表明:(1)留守初中生与非留守初中生在心理健康水平上存在显著差异,留守初中生出现更多的孤独倾向、自责倾向、过敏倾向和身体症状;(2)不同性别留守儿童在心理健康状态上存在显著差异,女生的心理健康水平低于男生;(3)留守初中生与非留守初中生在心理健康素质上不存在显著差异,除应对分量表外,各分量表得分都低于全国常模水平。 相似文献
802.
803.
Jiin‐Huarng Guo Hubert J. Chen Wei‐Ming Luh 《The British journal of mathematical and statistical psychology》2011,64(3):439-461
The allocation of sufficient participants into different experimental groups for various research purposes under given constraints is an important practical problem faced by researchers. We address the problem of sample size determination between two independent groups for unequal and/or unknown variances when both the power and the differential cost are taken into consideration. We apply the well‐known Welch approximate test to derive various sample size allocation ratios by minimizing the total cost or, equivalently, maximizing the statistical power. Two types of hypotheses including superiority/non‐inferiority and equivalence of two means are each considered in the process of sample size planning. A simulation study is carried out and the proposed method is validated in terms of Type I error rate and statistical power. As a result, the simulation study reveals that the proposed sample size formulas are very satisfactory under various variances and sample size allocation ratios. Finally, a flowchart, tables, and figures of several sample size allocations are presented for practical reference. 相似文献
804.
Jiin‐Huarng Guo L. Billard Wei‐Ming Luh 《The British journal of mathematical and statistical psychology》2011,64(2):259-276
When the underlying variances are unknown or/and unequal, using the conventional F test is problematic in the two‐factor hierarchical data structure. Prompted by the approximate test statistics (Welch and Alexander–Govern methods), the authors develop four new heterogeneous test statistics to test factor A and factor B nested within A for the unbalanced fixed‐effect two‐stage nested design under variance heterogeneity. The actual significance levels and statistical power of the test statistics were compared in a simulation study. The results show that the proposed procedures maintain better Type I error rate control and have greater statistical power than those obtained by the conventional F test in various conditions. Therefore, the proposed test statistics are recommended in terms of robustness and easy implementation. 相似文献
805.
Jae‐Buhm Hwang 《The Ecumenical review》2011,63(2):200-210
The Twelve Articles of Faith, written by Western Presbyterian and Reformed missionaries in India around 1900, have arguably been the most important ecumenical confession of faith of many Asian Protestant churches (Indian, Korean and Chinese Protestant churches and beyond). The articles by and large adopt the spirit and content of the Westminster Confession and Catechisms, and have some apparently Calvinistic elements. But they also have some new Arminian, universalistic and ecumenical elements that include the unique historical and theological implications of the epochal Western missions in Asia of the 19th and the early 20th centuries: both Christ's atonement for all people and a non‐predestinarian order of salvation. These elements, however, seem to entail a weak, individualistic ecclesiology along with a Biblicist or fundamentalist interpretation of the Bible. Nonetheless, having influenced millions of Asian Christians, the articles have been and continue to be an important ecumenical confession of faith, and in this way can contribute to uniting Asian‐and world‐Christian churches. 相似文献
806.
807.
808.
809.
VERED RAFAELY ADI MANTSUR LIOR BAR‐DAVID JOACHIM MEYER 《Journal of applied social psychology》2011,41(5):1059-1082
This study examined young (n = 40) and middle‐aged (n = 30) adults' susceptibility to comparative optimism and comparative pessimism regarding disability in old age and their willingness to save for long‐term care. Participants rated their risk of diverse levels of disability in old age, compared to another similar person, and indicated the amount of money they would be willing to save for future long‐term care. While middle‐aged participants showed the same level of comparative optimism for diverse disability levels, younger participants showed increasing levels of comparative optimism with increasing disability. Participants' comparative optimism levels and age both predicted their intentions to save. The findings are discussed in terms of theories of judgment and behavioral decision making. 相似文献
810.
Both ongoing practice and the theory of interaction ritual chains imply the significance of the contribution that ritual makes to group solidarity, such as national identification. This contribution is in need of empirical examination as in this study, which surveyed 1,788 schoolchildren in Hong Kong, a special administrative region of China. The results show that, controlling for earlier national identification behavior (within the previous year) and other predictors, ritualized interaction in an activity for national cause (within the previous 6 months) manifested both linear and quadratic positive effects on current national identification sentiment. The effect was stronger for children who previously displayed lower national identification behavior. These results favor the use of ritual to promote national identification. 相似文献