全文获取类型
收费全文 | 6406篇 |
免费 | 141篇 |
专业分类
管理学 | 894篇 |
民族学 | 38篇 |
人口学 | 621篇 |
丛书文集 | 27篇 |
教育普及 | 1篇 |
理论方法论 | 672篇 |
综合类 | 69篇 |
社会学 | 3002篇 |
统计学 | 1223篇 |
出版年
2023年 | 46篇 |
2022年 | 32篇 |
2021年 | 58篇 |
2020年 | 126篇 |
2019年 | 163篇 |
2018年 | 175篇 |
2017年 | 261篇 |
2016年 | 193篇 |
2015年 | 128篇 |
2014年 | 188篇 |
2013年 | 973篇 |
2012年 | 217篇 |
2011年 | 206篇 |
2010年 | 169篇 |
2009年 | 158篇 |
2008年 | 189篇 |
2007年 | 160篇 |
2006年 | 188篇 |
2005年 | 153篇 |
2004年 | 156篇 |
2003年 | 109篇 |
2002年 | 139篇 |
2001年 | 153篇 |
2000年 | 140篇 |
1999年 | 157篇 |
1998年 | 113篇 |
1997年 | 96篇 |
1996年 | 110篇 |
1995年 | 78篇 |
1994年 | 74篇 |
1993年 | 96篇 |
1992年 | 99篇 |
1991年 | 106篇 |
1990年 | 88篇 |
1989年 | 85篇 |
1988年 | 68篇 |
1987年 | 73篇 |
1986年 | 64篇 |
1985年 | 82篇 |
1984年 | 71篇 |
1983年 | 72篇 |
1982年 | 47篇 |
1981年 | 42篇 |
1980年 | 42篇 |
1979年 | 52篇 |
1978年 | 40篇 |
1977年 | 34篇 |
1976年 | 35篇 |
1975年 | 34篇 |
1974年 | 43篇 |
排序方式: 共有6547条查询结果,搜索用时 0 毫秒
141.
This article examines the concept of career exploration in adult populations. In contrast to the prevailing positive view of career exploration, the authors present a more complex and balanced perspective of this process, addressing some of the barriers to career exploration and the applicability of this concept to different populations. They examine differences between voluntary exploration and forced or chance exploration, discuss how relationships may be barriers to exploration, consider various outcomes of career explorations, and call for a more holistic view of the individual in career counseling. 相似文献
142.
143.
Two new nonparametric common principal component model selection procedures based on bootstrap distributions of the vector correlations of all combinations of the eigenvectors from two groups are proposed. The performance of these methods is compared in a simulation study to the two parametric methods previously suggested by Flury in 1988, as well as modified versions of two nonparametric methods proposed by Klingenberg in 1996 and then by Klingenberg and McIntyre in 1998. The proposed bootstrap vector correlation distribution (BVD) method is shown to outperform all of the existing methods in most of the simulated situations considered. 相似文献
144.
T. Chen K. Knox J. Arora W. Tang J. Kowalski X.M. Tu 《Journal of applied statistics》2016,43(6):979-995
Power analysis for multi-center randomized control trials is quite difficult to perform for non-continuous responses when site differences are modeled by random effects using the generalized linear mixed-effects model (GLMM). First, it is not possible to construct power functions analytically, because of the extreme complexity of the sampling distribution of parameter estimates. Second, Monte Carlo (MC) simulation, a popular option for estimating power for complex models, does not work within the current context because of a lack of methods and software packages that would provide reliable estimates for fitting such GLMMs. For example, even statistical packages from software giants like SAS do not provide reliable estimates at the time of writing. Another major limitation of MC simulation is the lengthy running time, especially for complex models such as GLMM, especially when estimating power for multiple scenarios of interest. We present a new approach to address such limitations. The proposed approach defines a marginal model to approximate the GLMM and estimates power without relying on MC simulation. The approach is illustrated with both real and simulated data, with the simulation study demonstrating good performance of the method. 相似文献
145.
The present study examined heterosexual romantic partners' number of intercourse partners prior to the initiation of their relationship to determine if a significant positive correlation (matching) occurred between partners, and if this matching was associated with their level of love, satisfaction with, and commitment to the relationship. One hundred and six couples who were dating, cohabitating, or married participated in this study. Results indicated that, with the exception of cohabitating couples, romantic partners showed a significant level of matching in the prior number of intercourse partners. Further, among the married couples, a higher discrepancy between men's and women's number of previous intercourse partners was related to lower levels of love, satisfaction, and commitment in the relationship. 相似文献
146.
Much research suggests that political experts are more likelyto structure attitudes toward different issues in an ideologicallyconsistent fashion. Based on recent studies of motivationalinfluences on social cognition, we hypothesize that only expertswith a high need to evaluatea strong motivation to establishevaluations of social objectsmay "apply" ideology toa variety of issues. Data from the 1998 NES Pilot and 2000 NESare used to examine this hypothesis. While experts do show moreideological constraint, this relationship appears to be limitedto individuals with a high need to evaluate. Additional analysesindicated that this interactive effect extended to other indicesof the use of ideology as well. 相似文献
147.
This study examined whether the efficacy of keepin' it REAL, a model program for substance use prevention in schools, was moderated by gender, ethnicity, and acculturation. Gender differences in program efficacy may arise through boys' higher risk of drug use, inadequate attention to girls' developmental issues, or cultural factors like polarized gender expectations. Data came from a randomized trial in 35 Phoenix, Arizona, middle schools involving 4,622 mostly Latino 7th graders. Using multi-level mixed models and multiple imputation missing techniques, results for the total sample showed no gender differences in program effects on recent substance use, but the program was more effective in fostering boys' than girls' anti-drug norms. Subgroup analyses demonstrated several more beneficial program effects for boys than girls (less alcohol and cigarette use and stronger anti-drug norms), but only among less acculturated Latinos. There were no gender differences in program effects among more acculturated Latinos, nor among non-Latino whites. 相似文献
148.
Cubero CG 《Work (Reading, Mass.)》2007,29(4):351-356
Does situational leadership style impact workers with disabilities? Situational leadership as a model and style of organizational management is defined. With a concentration on workers with disabilities, employer and employee perceptions of the workplace environment are analyzed as a contributing factor to the choice of leadership styles. Leadership style and its potential impact on workers with disabilities are included. Advantages of situational leadership style as an organizational model for managers that matches the intricate needs of workers with disabilities are argued. Methods for increasing awareness of the needs of persons with disabilities in the workplace and improving leadership models are discussed. Implications and potential outcomes for workers with disabilities based on the use of situational leadership by managers are discussed. 相似文献
149.
Kushner MG Abrams K Donahue C Thuras P Frost R Kim SW 《Journal of gambling studies / co-sponsored by the National Council on Problem Gambling and Institute for the Study of Gambling and Commercial Gaming》2007,23(2):121-132
Cue-reactivity has received increased attention in addiction research, though not for gambling in particular. We examined
cue reactivity in 18 problem gamblers by accompanying them to a gaming casino and measuring their subjective urge to gamble
over a 1-h period. Half of the sample was additionally exposed to a gambling-specific negative mood induction (NMI) manipulation
via guided imagery. Overall, about two-thirds of the sample reported moderate to high-gambling urges during the casino exposure.
Additionally, the NMI reduced cue-reactivity. Finally, gambling urges in both groups decreased over the course of the exposure
sessions. These findings suggest that a majority of problem gamblers experience the urge to gamble when exposed to gambling
cues and that the intensity of these urges decrease with time, especially in the presence of a gambling-relevant NMI. Cue
exposure should be studied further as a potential tool in the treatment of problem gambling. 相似文献
150.
Cameron CL Birnie K Dharma-Wardene MW Raivio E Marriott B 《Journal of psychosocial nursing and mental health services》2007,45(10):24-30
Making the transition from the hospital to a community setting can be extremely challenging for patients with acute mental health conditions. Transitional services have been created to help patients overcome difficulties associated with this transition. Nurses frequently play an integral role in the success of these services. By providing patients with individualized support during such transitions, nurses act as clinical liaisons and directly contribute to an increase in positive patient and system-level outcomes. This article describes a transitional service called the Bridge Program, designed to help adolescents make a successful transition from the hospital to the community. An overview of the Bridge Program is provided, and the results of an evaluation of this program are presented. Results suggest that the Bridge Program contributes to a decrease in the length of hospital stays and improves continuity of care for patients and their families. 相似文献