全文获取类型
收费全文 | 1308篇 |
免费 | 77篇 |
专业分类
各国政治 | 67篇 |
工人农民 | 63篇 |
世界政治 | 124篇 |
外交国际关系 | 147篇 |
法律 | 592篇 |
中国政治 | 5篇 |
政治理论 | 376篇 |
综合类 | 11篇 |
出版年
2023年 | 10篇 |
2021年 | 10篇 |
2020年 | 37篇 |
2019年 | 41篇 |
2018年 | 48篇 |
2017年 | 66篇 |
2016年 | 68篇 |
2015年 | 45篇 |
2014年 | 43篇 |
2013年 | 186篇 |
2012年 | 41篇 |
2011年 | 66篇 |
2010年 | 44篇 |
2009年 | 46篇 |
2008年 | 41篇 |
2007年 | 34篇 |
2006年 | 40篇 |
2005年 | 42篇 |
2004年 | 49篇 |
2003年 | 47篇 |
2002年 | 35篇 |
2001年 | 20篇 |
2000年 | 32篇 |
1999年 | 21篇 |
1998年 | 21篇 |
1997年 | 22篇 |
1996年 | 15篇 |
1995年 | 12篇 |
1994年 | 14篇 |
1993年 | 20篇 |
1992年 | 12篇 |
1991年 | 18篇 |
1990年 | 15篇 |
1989年 | 11篇 |
1988年 | 8篇 |
1987年 | 12篇 |
1986年 | 4篇 |
1985年 | 13篇 |
1984年 | 6篇 |
1983年 | 12篇 |
1982年 | 9篇 |
1981年 | 3篇 |
1980年 | 6篇 |
1979年 | 3篇 |
1978年 | 6篇 |
1977年 | 5篇 |
1975年 | 6篇 |
1974年 | 4篇 |
1973年 | 3篇 |
1972年 | 3篇 |
排序方式: 共有1385条查询结果,搜索用时 265 毫秒
821.
822.
The Boston Gun Project is a problem-solving policing initiativeaimed at reducing homicide victimization among young peoplein the city of Boston. It represented an innovative partnershipbetween researchers and practitioners to assess the city's youthhomicide problem and implement an intervention intended to havepowerful impacts in the near term. In early 1996, a workinggroup representing a variety of law enforcement and social serviceagencies implemented an intervention that strategically respondedto gang violence, focused enforcement efforts on gun trafficking,and emphasized communication of the strategy to generate deterrence.The intervention is associated with a 60% decline in youth homicidevictimization (i.e., two fewer victims per month). There aresmaller declines in other measures of violence. The declinein youth homicide is sharp and occurs coincident with the introductionof the intervention. Competing hypotheses appear unable to accountfor the decline. 相似文献
823.
Actions by state prisoners have comprised a large and growing body of litigation in the U.S. federal courts over the past thirty years. State prisoners can challenge the validity of their state trial court convictions (habeas corpus petitions) and the constitutionality of the conditions of their confinement to state prisons and jails (Section 1983 lawsuits). Currently, one out of every five civil cases filed in the federal system is brought by a jail or prison inmate. When in the past did these cases begin to arise? What is the present trend? What does the future hold concerning the number of cases likely to be filed? These questions are at the heart of the current research. Care is needed in addressing these queries because it is neither easy nor obvious to know what propels the volume of litigation. Moreover, the future is especially difficult to predict in light of recent legislation adopted by the United States Congress to limit the number of habeas corpus petitions and the number of Section 1983 lawsuits filed each year. The unique contribution of the current research is threefold. First, an improved methodology is used to describe past patterns and to forecast future trends. Simply stated, prisoner litigation is hypothesized to be related to the number of prisoners. As the number of prisoners increases, the volume of litigation increases proportionately. What is not obvious about this relationship is that it has persisted over the past decades despite substantial changes in legal doctrines designed to affect the filing of the litigation. Second, the effects of two major congressional actions passed in 1996 to limit prisoner litigation are examined and assessed for their success in achieving their intended objectives. The first of these, the Antiterrorism and Effective Death Penalty Act, which sought to restrict habeas corpus petitions, is judged to have virtually no impact. The second piece of legislation, the Prisoner Litigation Reform Act, which sought to curtail lawsuits against correctional officials, appears to have lowered the volume of litigation in the short‐term, but has not disrupted the underlying link between the number of prisoners and the number of lawsuits. Finally, estimates are made of the future volume of litigation and the corresponding number of federal judges needed to resolve prisoner litigation. These estimates have the advantage of being based on significant statistical relationships and accounting for the effects of recent congressional action. 相似文献
824.
Theim KR Sinton MM Stein RI Saelens BE Thekkedam SC Welch RR Epstein LH Wilfley DE 《Journal of youth and adolescence》2012,41(1):86-97
Developmentally relevant high-risk dietary situations (e.g., parties where tempting foods are available) may influence overweight
youth’s weight control, as they increase risk for overeating. Better self-efficacy for coping with these situations—which
preadolescents may learn from their parents—could foster successful weight control. Overweight preadolescents (N = 204) ages 7–12 years (67% female), each with one parent, separately completed the Hypothetical High-Risk Situation Inventory
(HHRSI) pre- and post-weight loss treatment. The HHRSI assesses temptation to overeat and confidence in refraining from overeating
in response to four high-risk dietary scenarios. Participants generated coping strategies for each scenario. Coping strategies
and confidence increased and temptation decreased from pre- to post-weight loss treatment. Parents’ increase in confidence
from pre- to post-treatment was associated with preadolescents’ and parents’ weight loss. Tailoring treatments to enhance
parents’ coping skills (e.g., building strategies, targeting high temptation/low confidence scenarios) may maximize preadolescents’
weight control. 相似文献
825.
Sinton MM Goldschmidt AB Aspen V Theim KR Stein RI Saelens BE Epstein LH Wilfley DE 《Journal of youth and adolescence》2012,41(1):67-75
Shape and weight concerns among overweight pre-adolescents heighten risk for eating disorders and weight gain. Treatment and
prevention efforts require consideration of psychosocial factors that co-occur with these concerns. This study involved 200
overweight pre-adolescents, aged 7–12 years (M age = 9.8; SD = 1.4), presenting for family-based weight control treatment. Hierarchical regression was used to examine the
influence of pre-adolescents’ individual characteristics and social experiences, and their parents’ psychological symptoms,
on shape and weight concerns as assessed by the Child Eating Disorder Examination. Findings revealed that higher levels of
dietary restraint, greater feelings of loneliness, elevated experiences with weight-related teasing, and higher levels of
parents’ eating disorder symptoms predicted higher shape and weight concerns among overweight pre-adolescents. Interventions
addressing overweight pre-adolescents’ disordered eating behaviors and social functioning, as well as their parents’ disordered
eating behaviors and attitudes, may be indicated for those endorsing shape and weight concerns. 相似文献
826.
Christopher P. Salas-Wright Michael G. Vaughn David R. Hodge Brian E. Perron 《Journal of youth and adolescence》2012,41(12):1560-1575
Relatively little is known in terms of the relationship between religiosity profiles and adolescents’ involvement in substance use, violence, and delinquency. Using a diverse sample of 17,705 (49?% female) adolescents from the 2008 National Survey on Drug Use and Health, latent profile analysis and multinomial regression are employed to examine the relationships between latent religiosity classes and substance use, violence, and delinquency. Results revealed a five class solution. Classes were identified as religiously disengaged (10.76?%), religiously infrequent (23.59?%), privately religious (6.55?%), religious regulars (40.85?%), and religiously devoted (18.25?%). Membership in the religiously devoted class was associated with the decreased likelihood of participation in a variety of substance use behaviors as well as decreases in the likelihood of fighting and theft. To a lesser extent, membership in the religious regulars class was also associated with the decreased likelihood of substance use and fighting. However, membership in the religiously infrequent and privately religious classes was only associated with the decreased likelihood of marijuana use. Findings suggest that private religiosity alone does not serve to buffer youth effectively against involvement in problem behavior, but rather that it is the combination of intrinsic and extrinsic adolescent religiosity factors that is associated with participation in fewer problem behaviors. 相似文献
827.
828.
Brian W. Conz 《The Journal of peasant studies》2013,40(2):479-490
This paper examines the significance of historically sedimented military practices for conservation in contemporary Guatemala. During a 36-year civil war, the military represented the lowlands as dangerous jungle that had to be tamed to justify its counterinsurgency campaigns, thus positioning the jungle's inhabitants as suspect citizens or potential insurgents. Also during the war, international conservationists coalesced to successfully lobby for a protected areas system that enclosed one-third of Guatemala's territory. This paper argues that this transnational conservation alliance, comprised of international conservation agencies and national elites, evokes the violence of scorched earth counterinsurgency. The use of jungle and forest discourses in successive territorial projects produces a racialized landscape that connects a violent past to a violent present. In recent years, jungle discourses have articulated advocacy for increased militarization to fight the ‘war on drugs’ in protected areas. As such, I argue thatconservation agencies and the military are complicit in reproducing social inequalities, often through violent exclusions. 相似文献
829.
Local government classification systems are employed in many countries for regulation, grant transfers and other public policy purposes. Given the pivotal role these classification systems play in public policy, their accuracy is a matter of some importance. Classification systems take several forms typically consisting of groupings of municipalities based on factors such as degree of urbanisation, population size and the like. However, to date none of these classification systems have been tested for homogeneity with respect to environmental constraints or validated against external data. This paper employs the classification system for New South Wales (NSW) local authorities as a representative case study to demonstrate that a wider range of external constraints should be considered for the robust classification of local councils. 相似文献
830.