全文获取类型
收费全文 | 7973篇 |
免费 | 201篇 |
国内免费 | 1篇 |
专业分类
管理学 | 1089篇 |
民族学 | 35篇 |
人口学 | 818篇 |
丛书文集 | 34篇 |
理论方法论 | 738篇 |
综合类 | 93篇 |
社会学 | 3897篇 |
统计学 | 1471篇 |
出版年
2023年 | 48篇 |
2020年 | 111篇 |
2019年 | 159篇 |
2018年 | 181篇 |
2017年 | 279篇 |
2016年 | 203篇 |
2015年 | 145篇 |
2014年 | 187篇 |
2013年 | 1411篇 |
2012年 | 252篇 |
2011年 | 234篇 |
2010年 | 166篇 |
2009年 | 150篇 |
2008年 | 163篇 |
2007年 | 153篇 |
2006年 | 179篇 |
2005年 | 169篇 |
2004年 | 164篇 |
2003年 | 146篇 |
2002年 | 175篇 |
2001年 | 176篇 |
2000年 | 176篇 |
1999年 | 187篇 |
1998年 | 143篇 |
1997年 | 140篇 |
1996年 | 130篇 |
1995年 | 116篇 |
1994年 | 111篇 |
1993年 | 119篇 |
1992年 | 127篇 |
1991年 | 135篇 |
1990年 | 133篇 |
1989年 | 147篇 |
1988年 | 89篇 |
1987年 | 114篇 |
1986年 | 94篇 |
1985年 | 118篇 |
1984年 | 100篇 |
1983年 | 113篇 |
1982年 | 87篇 |
1981年 | 86篇 |
1980年 | 82篇 |
1979年 | 83篇 |
1978年 | 86篇 |
1977年 | 65篇 |
1976年 | 69篇 |
1975年 | 63篇 |
1974年 | 59篇 |
1973年 | 48篇 |
1971年 | 43篇 |
排序方式: 共有8175条查询结果,搜索用时 31 毫秒
821.
Beverly B. Koerin Marcia P. Harrigan Jane W. Reeves 《Journal of Social Work Education》2013,49(2):199-207
Abstract The transition from student to social worker is a process which social work educators cannot control but can facilitate. Through classroom and field instruction faculty assumer responsibility of preparing students' professional knowledge, skills, and values; however, our responsibilities should extend beyond curriculum delivery. Drawing on Schlossberg's (1984) model of transitions, this article discusses two primary factors which affect the younger student in transition—developmental needs and the external environment—and strategies for assisting in the transition through intervention in academic advising and teaching roles. 相似文献
822.
Historically, organizational politics and political leader behavior have been framed and characterized negatively, as self-serving and counter-productive. However, scholars have noted that political acts can achieve positive ends, and have called for further discussions of positive forms of political leadership. Continuing in this recent stream of research on positive perspectives on organizational politics, a framework of leader political support is proposed, suggesting that the positive features of leader political behavior, and testable propositions are developed. The leader political support construct is defined and its antecedents are explicated utilizing a social capital perspective. Additionally, social exchange theory is used to explain the consequences of leader political support. Contributions to both leadership and organizational politics literatures and directions for future research are discussed. 相似文献
823.
D. B. Holiday 《统计学通讯:理论与方法》2013,42(8):2387-2406
Nonparametric smoothing, such as kernel or spline estimation, has been examined extensively under the assumption of uncorrelated errors. This paper addresses the effects of potential correlation on consistency and other asymptotic properties in a repeated-measures model, using directly optimized linear smoothers of the replicate means. Unrestricted optimal weights, with respect to squared error loss, are used to confirm a lack of consistency for all linear estimators in an autocorrelated errors model. The results indicate kernel methods that work well for an uncorrelated errors model may not have the ability to perform satisfactorily when correlation is introduced, due to an asymmetry in the optimal weights, which disappears for an uncorrelated errors model. These would include data-driven bandwidth selection methods, adjustments of the bandwidth to accommodate correlation, higher-order kernels, and related bias reduction techniques. The analytic results suggest alternative approaches, not considered here in detail, which have shown merit. 相似文献
824.
In this paper we have proposed chain ratio type estimators for ratio of two population means using two auxiliary characters. The expressions for bias and mean square error of these estimators have been derived. A comparison of the proposed estimator with that of double sampling estimator has been made in terms of mean square error. An emperical study has also been made. 相似文献
825.
We consider a semi-Markov compartroental system with branching particles, Me study the total sojourn time of all the particles and obtain the asymptotic behaviour of its mean. We also discuss some special systems. 相似文献
826.
Sarah B. Woods Jacob B. Priest Wayne H. Denton 《Journal of marital and family therapy》2013,39(2):261-267
Follow‐up data collection presents many challenges for longitudinal research. Validating paper‐and‐pencil assessments for use via telephone may alleviate these issues. This study evaluates psychometric properties of the Quality of Marriage Index (QMI; Norton, 1983, Journal of Marriage and the Family, 45, 141) when administered by telephone and compares scores with the paper‐and‐pencil version. Participants included women with major depressive disorder and dyadic discord and their male spouses (n = 24 couples). Results suggest excellent scale reliability for the verbal QMI. However, a significant mean difference was found: participants scored on average 3 points higher on the telephone‐administered QMI than on the written QMI. Recommendations for future research and clinical implications are discussed. 相似文献
827.
Oonagh B. Breen 《Voluntas: International Journal of Voluntary and Nonprofit Organizations》2013,24(3):852-880
This article examines the charity financial reporting regimes of three common law jurisdictions: Ireland, the UK and the US. It assesses whether these respective disclosure models improve either nonprofit behaviour or enforcement odds. Three core aspects of the regimes are reviewed: the reliability of the disclosed information, the consistency of such information and its ability to facilitate comparison between charities, and the level of enforcement arising from disclosure. Particular attention is paid to oversight mechanisms, including audits, and their rates of effectiveness in the regulation of charities. The article examines ongoing efforts to reform broader international accounting standards and considers the impact such moves are likely to have at both regional and national level for charity accountability. It concludes that given the markedly different spheres in which for-profits and nonprofits operate, care should be taken in modelling charity disclosure regimes on those developed for for-profit entities. 相似文献
828.
829.
Allan W. Gregory 《商业与经济统计学杂志》2013,31(1):107-115
In this article we propose a nonparametric test for autoregressive conditional heteroscedasticity based on finite-state Markov chains. A simple Monte Carlo experiment suggests that in finite samples it performs comparably to the Lagrange multiplier test under conditional normality and is superior for the t, lognormal, and exponential distributions. As an illustration, we apply both tests to Canadian/U.S. forward foreign exchange data. 相似文献
830.
Abstract In a national study of the work environment, physical, and mental well-being of more than 2600 Swedish nurses, 30% reported having experienced violence at work. Possible association between violence and a range of occupational, demographic, and lifestyle characteristics were studied. Stepwise multiple linear and logistic regressions were used to further examine risk factors for violence. Occupational factors with significant correlations to workplace violence were nursing discipline (type of ward or facility), years of work experience, supervisory responsibilities, night work, work dissatisfaction, work-related musculoskeletal injury, and frequency of patient handling. Demographic/lifestyle factors related to violence were age, gender, smoking, coffee consumption at work, and use of alcohol to relax after work. The best fit linear regression model explained 17% of the variance in violence, 13%, of the variance in threat of violence. The logistic regression model confirmed an increased risk of violence and threats in psychiatric and geriatric settings. However, much remains unexplained about the aetiology of violencc in health carc settings. This report provides the basis for a pilot intervention study currently in progress. 相似文献