全文获取类型
收费全文 | 4321篇 |
免费 | 119篇 |
国内免费 | 3篇 |
专业分类
管理学 | 490篇 |
民族学 | 26篇 |
人口学 | 386篇 |
丛书文集 | 26篇 |
理论方法论 | 314篇 |
综合类 | 86篇 |
社会学 | 1890篇 |
统计学 | 1225篇 |
出版年
2023年 | 29篇 |
2022年 | 20篇 |
2021年 | 24篇 |
2020年 | 72篇 |
2019年 | 132篇 |
2018年 | 114篇 |
2017年 | 196篇 |
2016年 | 116篇 |
2015年 | 100篇 |
2014年 | 119篇 |
2013年 | 915篇 |
2012年 | 145篇 |
2011年 | 114篇 |
2010年 | 79篇 |
2009年 | 102篇 |
2008年 | 96篇 |
2007年 | 84篇 |
2006年 | 73篇 |
2005年 | 75篇 |
2004年 | 68篇 |
2003年 | 57篇 |
2002年 | 85篇 |
2001年 | 90篇 |
2000年 | 76篇 |
1999年 | 89篇 |
1998年 | 76篇 |
1997年 | 66篇 |
1996年 | 56篇 |
1995年 | 76篇 |
1994年 | 55篇 |
1993年 | 58篇 |
1992年 | 68篇 |
1991年 | 68篇 |
1990年 | 74篇 |
1989年 | 61篇 |
1988年 | 43篇 |
1987年 | 44篇 |
1986年 | 50篇 |
1985年 | 55篇 |
1984年 | 56篇 |
1983年 | 41篇 |
1982年 | 37篇 |
1981年 | 33篇 |
1980年 | 40篇 |
1979年 | 45篇 |
1978年 | 37篇 |
1977年 | 26篇 |
1976年 | 21篇 |
1974年 | 21篇 |
1971年 | 21篇 |
排序方式: 共有4443条查询结果,搜索用时 156 毫秒
771.
Belstock SA Connolly GN Carpenter CM Tucker L 《Journal of American college health : J of ACH》2008,56(4):383-389
OBJECTIVE: Advertising influences the health-related behaviors of college-aged individuals. Cigarette manufacturers aggressively market to young adults and may exploit their affinity for alcohol when creating advertisements designed to increase cigarettes' appeal. Internal tobacco industry documents reveal that cigarette manufacturers understood the popularity of alcohol among young adults and sought to produce pertinent marketing strategies. METHODS: The authors conducted a content analysis of cigarette and alcohol advertisements in young adult-oriented magazines to investigate portrayed associations between cigarettes and alcohol. RESULTS: The content analysis revealed that 32 of 114 cigarette advertisements referenced alcohol and that those advertisements were more likely than others to portray active smoking. Conversely, 0 of 317 alcohol advertisements referenced cigarettes, and alcohol advertisements were only slightly more likely than cigarette advertisements to feature alcohol-related settings. CONCLUSIONS: Such advertising may detrimentally affect smoking patterns of college students. An understanding of these strategies can benefit on-campus tobacco control efforts. 相似文献
772.
Rasberry CN 《Journal of American college health : J of ACH》2008,56(4):423-426
As a college health educator, the author knows much about healthy behaviors. In spite of this, however, the author discusses finding herself struggling with the same problems of body image that her students express. With a variety of influences tied to negative body image, it is important that college health professionals create a plan of action for reducing the negative effects of such influences. The author proposes that health professionals take a more active role in combating body image problems by using 3 important strategies: incorporating body image into basic health curricula and classes, focusing research efforts on intervention, and exploring the use of advocacy to initiate change at the societal level. 相似文献
773.
Pantalon MV Maciejewski PK Desai RA Potenza MN 《Journal of gambling studies / co-sponsored by the National Council on Problem Gambling and Institute for the Study of Gambling and Commercial Gaming》2008,24(1):63-78
Excitement-seeking and related constructs have been associated with heavier gambling and negative health measures in problem
and/or pathological gamblers. Most adults gamble recreationally and an understanding of the relationship between excitement-seeking
as a motivation for gambling amongst subsyndromal gamblers has significant public health implications. Logistic regression
analyses were used to examine a national sample of past-year recreational gamblers (N = 1,476) to identify characteristics distinguishing gamblers acknowledging gambling for excitement (“Excitement-seeking Gamblers”
or EGs) and gamblers denying gambling for excitement (“Non-excitement-seeking Gamblers” or NEGs). EGs were more likely than
NEGs to report alcohol use and abuse/dependence, any substance abuse/dependence, incarceration, large gambling wins and losses,
more frequent and varied gambling, and symptoms of pathological gambling (i.e., at-risk gambling). Together, these findings
indicate that EGs are more likely than NEGs to demonstrate problems in multiple areas characterized by impaired impulse control. 相似文献
774.
Child abuse in the context of domestic violence: prevalence, explanations, and practice implications
This article addresses the following questions: (a) How common is child abuse among domestically violent families? (b) Are there specific patterns of child abuse among domestically violent families? (c) What may explain occurrences of child abuse in domestically violent families? (d) How might domestic violence affect treatment for child abuse? We review research on child abuse in the context of domestic violence. We discuss implications of this research for service-delivery programs for domestically violent families. 相似文献
775.
This study investigated the effects of a pregroup motivational intervention for domestic abuse perpetrators. Men presenting for treatment at a community domestic violence agency (N = 108) were assigned to receive either a two-session intake using the techniques of motivational interviewing (MI) or a structured intake (SI) control. All participants were then referred to a cognitive behavioral treatment (CBT) program in groups homogeneous with respect to intake condition. The motivational intake led to more constructive in-session behavior during the early phase of group CBT, greater compliance with group CBT homework assignments, higher late session therapist ratings of the working alliance, and more help seeking outside of the domestic violence program. No significant effects of intake condition were found on session attendance, self-reports of readiness to change abusive behavior, or client reports of the working alliance. Partner reports of abusive behavior outcomes during the 6 months after group CBT revealed a marginal effect favoring the MI condition on physical assault. The findings suggest that motivational interviewing can increase receptivity to partner violence interventions. 相似文献
776.
Konopka del N Shook RP Kohut ML Vos Tulp R Franke WD 《Journal of aging and physical activity》2008,16(3):355-361
The 6-min walk test (6MWT) is a common component of fitness assessments of older adults; however, differing course configurations might affect 6MWT performance. It is unclear how comparable 2 different configurations are. To determine the comparability of 2 courses, 35 adults >65 years of age completed two 6MWT, once walking around a 20- by 5-yd outdoor rectangle and once on an indoor oval track (circumference 144.3 yd). Scores for the 2 tests were internally consistent (intraclass correlation coefficient = .95). The participants walked farther on the oval track than around the rectangle (639 +/- 19 vs. 582 +/- 16 yd; p < .0001), but responses to the rectangular configuration could be readily estimated using the equation 66.7 yd + 0.807 x (oval walking distance), R2 = .85. Thus, within-participant responses are similar across both 6MWT, but the course configuration affects the distance walked. 相似文献
777.
It has long been recognized that women are at a higher risk than men to develop depression and that such risk is particularly associated with reproductive cycle events. Recent long-term, prospective studies have demonstrated that the transition to menopause is associated with higher risk for new onset and recurrent depression. A number of biological and environmental factors are independent predictors for depression in this population, including the presence of hot flushes, sleep disturbance, history of severe premenstrual syndrome or postpartum blues, ethnicity, history of stressful life events, past history of depression, body mass index, socioeconomic status and the use of hormones and antidepressants. Accumulated evidence suggests that ovarian hormones modulate serotonin and noradrenaline neurotransmission, a process that may be associated with underlying pathophysiological processes involved in the emergence of depressive symptoms during periods of hormonal fluctuation in biologically predisposed subpopulations. Transdermal estradiol and serotonergic and noradrenergic antidepressants are efficacious in the treatment of depression and vasomotor symptoms in symptomatic, midlife women. The identification of individuals whom might be at a higher risk for depression during menopausal transition could guide preventive strategies for this population. 相似文献
778.
N. Bourgeois A. Giannakos G. Lucarelli I. Milis V. T. Paschos O. Pottié 《Journal of Combinatorial Optimization》2012,23(1):94-117
In this paper, we deal with the problem of finding quasi-independent sets in graphs. This problem is formally defined in three
versions, which are shown to be polynomially equivalent. The one that looks most general, namely, f-max quasi-independent set, consists of, given a graph and a non-decreasing function f, finding a maximum size subset Q of the vertices of the graph, such that the number of edges in the induced subgraph is less than or equal to f(|Q|). For this problem, we show an exact solution method that runs within time
O*(2\fracd-27/23d+1n)O^{*}(2^{\frac{d-27/23}{d+1}n}) on graphs of average degree bounded by d. For the most specifically defined γ-max quasi-independent set and k-max quasi-independent set problems, several results on complexity and approximation are shown, and greedy algorithms are proposed, analyzed and tested. 相似文献
779.
780.
长三角地区节能减排演化情景分析及预测 总被引:2,自引:0,他引:2
以长三角地区经济发展为基础,综合考虑该地区能源环境现状。基于节能减排动态演化模型,结合情景分析法对长三角地区2015年经济产值、能源消耗及污染排放进行预测,并分析2009~2015年经济产值、能源消耗及污染排放演化情况。旨在为未来长三角地区实施节能减排策略,实现可持续发展提供理论依据。 相似文献