全文获取类型
收费全文 | 1246篇 |
免费 | 39篇 |
专业分类
管理学 | 159篇 |
民族学 | 6篇 |
人口学 | 97篇 |
丛书文集 | 7篇 |
理论方法论 | 170篇 |
综合类 | 7篇 |
社会学 | 748篇 |
统计学 | 91篇 |
出版年
2023年 | 6篇 |
2022年 | 8篇 |
2021年 | 7篇 |
2020年 | 26篇 |
2019年 | 26篇 |
2018年 | 45篇 |
2017年 | 60篇 |
2016年 | 45篇 |
2015年 | 33篇 |
2014年 | 46篇 |
2013年 | 213篇 |
2012年 | 41篇 |
2011年 | 42篇 |
2010年 | 46篇 |
2009年 | 34篇 |
2008年 | 48篇 |
2007年 | 56篇 |
2006年 | 42篇 |
2005年 | 42篇 |
2004年 | 35篇 |
2003年 | 34篇 |
2002年 | 42篇 |
2001年 | 26篇 |
2000年 | 21篇 |
1999年 | 22篇 |
1998年 | 15篇 |
1997年 | 11篇 |
1996年 | 15篇 |
1995年 | 13篇 |
1994年 | 17篇 |
1993年 | 9篇 |
1992年 | 8篇 |
1991年 | 10篇 |
1990年 | 10篇 |
1989年 | 5篇 |
1988年 | 9篇 |
1987年 | 11篇 |
1986年 | 10篇 |
1985年 | 14篇 |
1984年 | 7篇 |
1983年 | 13篇 |
1982年 | 9篇 |
1981年 | 11篇 |
1980年 | 8篇 |
1979年 | 8篇 |
1978年 | 5篇 |
1977年 | 3篇 |
1976年 | 3篇 |
1975年 | 4篇 |
1974年 | 6篇 |
排序方式: 共有1285条查询结果,搜索用时 15 毫秒
71.
Idler E Leventhal H McLaughlin J Leventhal E 《Journal of health and social behavior》2004,45(3):336-356
Self-rated health as a predictor of mortality has been studied primarily in large, representative populations, with relatively little progress toward understanding the information processing that individuals use to arrive at these ratings. With subsamples of National Health and Nutrition Examination Survey (NHANES) Epidemiologic Follow-up Study (NHEFS) data for respondents with circulatory system disease (N = 3,709) and respondents with no diagnosable disorders (N = 1,127) at baseline, we test the idea that individuals with experience of chronic disease of the circulatory system will have more predictive self-ratings of health than healthy individuals. Poor or fair self-rated health increased the adjusted hazard of all-cause mortality for respondents with circulatory system disease, but not for respondents who were healthy. Additional analyses confirm that poor or fair self-rated health is particularly predictive for respondents with self-reported history of circulatory system diagnoses and perception of symptoms, but not for respondents without symptoms or diagnoses prior to the NHANES physical exam. 相似文献
72.
73.
Recent studies point to an emerging role for the TOR (target of rapamycin) pathway in the regulation of life span. In this Perspective, we discuss the possibility that this pathway is an important modulator of nutrient-dependent changes in life span. Additionally, we discuss the interactions between the TOR and insulin-like signaling pathways as well as the key downstream processes that TOR regulates. 相似文献
74.
Characteristics of effective providers of marital and family therapy in rural mental health settings
Characteristics of effective providers of marital and family therapy (MFT) in rural mental health settings were investigated. The survey sample included 74 members of the National Association for Rural Mental Health who, through a modified Delphi process, created a composite picture of effective MFT providers. The findings yielded six major rank-ordered characteristics of effective MFT providers in rural mental health settings, with effective skills in MFT ranked first. Rural community understanding, appreciation and participation ranked second. Specific competencies contributing to each major characteristic were also identified and are discussed. Recommendations for use of this information are provided. 相似文献
75.
Given the emerging interest among researchers, practitioners, and policymakers in youth participation, it is important to examine and assess carefully the promise and challenges of youth engagement. 相似文献
76.
The impact of childhood abuse and neglect on adult mental health: a prospective study 总被引:10,自引:0,他引:10
This paper examines the impact of three types of victimization in childhood--sexual abuse, physical abuse, and neglect--on lifetime measures of mental health among adults. In contrast to research that relies on retrospective recall of childhood victimization, this work uses a prospective sample gathered from records of documented court cases of childhood abuse and neglect in a midwestern city around 1970. These subjects were interviewed about twenty years later. In addition, this research compares outcomes of the 641 members of the abuse and neglect group with a matched control group of 510 persons who did not have documented cases of abuse or neglect. The results indicate that men who were abused and neglected as children have more dysthymia and antisocial personality disorder as adults than matched controls, but they did not have more alcohol problems. Abused and neglected women report more symptoms of dysthymia, antisocial personality disorder, and alcohol problems than controls. After controlling for stressful life events, however, childhood victimization had little direct impact on any lifetime mental health outcome. This research indicates the importance of adopting an approach that places childhood victimization in the context of other life stressors and of prospective changes over the life course. 相似文献
77.
Abstract This research had two primary objectives: 1) to broaden the sociological construct of community attachment to incorporate both social and natural environment dimensions of attachment, and 2) to examine how variations in attachment relate to two dimensions of well‐being in natural amenity‐rich rural communities. The specific dimensions of well‐being measured are two important factors identified in previous research—collective action and perceptions of open communication. Factor analysis of fourteen measures of attachment indicated social attachment and attachment to the natural environment are distinct dimensions of the broader concept of community attachment. Participation in collective action and perceptions of open communication within a respondent's community explained only a small portion of the variance in levels of both social and natural environment attachment. Religious affiliation and length of residence were strongly associated with social attachment, supporting findings from previous empirical work. However, length of residence and religious affiliation were not statistically associated with levels of attachment to the natural environment, further reinforcing the distinction between the two dimensions of attachment. 相似文献
78.
We describe a two-phase algorithm for MAX-SAT and weighted MAX-SAT problems. In the first phase, we use the GSAT heuristic to find a good solution to the problem. In the second phase, we use an enumeration procedure based on the Davis-Putnam-Loveland algorithm, to find a provably optimal solution. The first heuristic stage improves the performance of the algorithm by obtaining an upper bound on the minimum number of unsatisfied clauses that can be used in pruning branches of the search tree.We compare our algorithm with an integer programming branch-and-cut algorithm. Our implementation of the two-phase algorithm is faster than the integer programming approach on many problems. However, the integer programming approach is more effective than the two-phase algorithm on some classes of problems, including MAX-2-SAT problems. 相似文献
79.
The development of control systems and supporting software remains one of the greatest obstacles to the widespread implementation of highly adaptive reconfigurable automation technology. This paper will present the structure of a modular automation control system designed to support rapid reconfiguration and redeployment of automation components. The paper will first present the concept of a layered system architecture and the use of modular automation components to support the construction of a wide variety of automated systems. This layered system architecture is then applied to the proposed modular supervisory control system responsible for configuring and driving automated production resources. Each of the control components comprising this modular control system will be presented. 相似文献
80.
The use of government incentives tied to market prices as means of boosting corporate social responsibility (CSR) has expanded notably in recent decades. Enhanced business tax deductions for charitable donations and credits for conservation easements are notable cases. While providing incentives for socially desirable behavior to achieve legislative goals has intuitive appeal, the broader economic consequences are not always fully understood. In this study, we examine such wider consequences for supply chains when subsidies for CSR are offered. One effect we identify is that since incentives are typically tied to market value, firms have not only an added incentive to achieve societal objectives (say by donating inventory) but also an incentive to raise output (retail) market prices. A second consequence is that since firms forgo potential revenues by engaging in socially desired behavior, they become increasingly sensitive to supplier pricing; in an uncoordinated supply chain this leads to input (wholesale) price concessions. Among other things, the results underscore that incentives put in place to meet broader societal objectives also have notable ramifications for suppliers, retailers, and consumers in primary markets. 相似文献