首页 | 本学科首页   官方微博 | 高级检索  
文章检索
  按 检索   检索词:      
出版年份:   被引次数:   他引次数: 提示:输入*表示无穷大
  收费全文   1527篇
  免费   52篇
各国政治   147篇
工人农民   42篇
世界政治   146篇
外交国际关系   74篇
法律   648篇
中国共产党   1篇
中国政治   11篇
政治理论   497篇
综合类   13篇
  2021年   7篇
  2020年   20篇
  2019年   21篇
  2018年   40篇
  2017年   42篇
  2016年   45篇
  2015年   34篇
  2014年   21篇
  2013年   221篇
  2012年   36篇
  2011年   33篇
  2010年   27篇
  2009年   32篇
  2008年   43篇
  2007年   47篇
  2006年   58篇
  2005年   40篇
  2004年   41篇
  2003年   47篇
  2002年   57篇
  2001年   36篇
  2000年   31篇
  1999年   26篇
  1998年   25篇
  1997年   27篇
  1996年   17篇
  1995年   22篇
  1994年   18篇
  1993年   24篇
  1992年   18篇
  1991年   22篇
  1990年   21篇
  1989年   26篇
  1988年   24篇
  1987年   27篇
  1986年   21篇
  1985年   27篇
  1984年   20篇
  1983年   30篇
  1982年   25篇
  1981年   30篇
  1980年   19篇
  1979年   11篇
  1978年   12篇
  1977年   20篇
  1976年   7篇
  1975年   12篇
  1973年   11篇
  1968年   7篇
  1965年   6篇
排序方式: 共有1579条查询结果,搜索用时 15 毫秒
951.
952.
We put forward a new approach to studying issue definition within the context of policy diffusion. Most studies of policy diffusion—which is the process by which policymaking in one government affects policymaking in other governments—have focused on policy adoptions. We shift the focus to an important but neglected aspect of this process: the issue‐definition stage. We use topic models to estimate how policies are framed during this stage and how these frames are predicted by prior policy adoptions. Focusing on smoking restriction in U.S. states, our analysis draws upon an original data set of over 52,000 paragraphs from newspapers covering 49 states between 1996 and 2013. We find that frames regarding the policy's concrete implications are predicted by prior adoptions in other states, whereas frames regarding its normative justifications are not. Our approach and findings open the way for a new perspective to studying policy diffusion in many different areas.  相似文献   
953.
In a previous study, 18 repeated exposures of anaesthetized swine to an electro-muscular incapacitating device (TASER International's ADVANCED TASER X26 electronic control device) resulted in acidosis and increases in blood electrolytes. In the current study, experiments were performed to investigate effects of a more typical scenario of repeated exposures of the device on muscle contraction and changes in blood factors. Ten swine were exposed for 5s, followed by a 5-s period of no exposure, three times. Selected blood factors were monitored for 3h following exposure. Transient increases in blood glucose, lactate, sodium, potassium, calcium, and pCO(2) were consistent with previous reports in the literature dealing with studies of muscle stimulation or exercise. Blood pH was decreased immediately following exposure, but subsequently returned toward a normal level. Oxygen saturation (measured by pulse oximetry) was not changed significantly. In conclusion, three repeated TASER device exposures had only transient effects on blood factors, which all returned to pre-exposure levels, with the exception of hematocrit (which remained elevated after 3h). Since the increase in this factor was less than that which may occur after short periods of exercise, it is unlikely that this would be an indicator of any serious harm.  相似文献   
954.
Evidence relevant to claims of self-control theory concerning the connection between social integration and crime/deviance is offered. Using data from a survey of the population of a southwestern city that permit measurement of two types of social integration, including socially supportive networks, we (1) investigate the association between self-control and social integration, and (2) attempt to ascertain if social integration is associated with misbehavior independently of self-control. Results suggest that self-control is a persistent predictor of misconduct that operates independently of social integration. Although interpersonal social integration appears to stand alone in its association with deviance, community integration shows no relationship with self-control or misbehavior.
Michael R. WelchEmail:
  相似文献   
955.
This article reviews the Full Federal Court decision in Grant v Commissioner of Patents (2006) 154 FCR 62; 69 IPR 221; [2006] FCAFC 120 denying patentability to a method for structuring a financial transaction so as to protect an individual's assets from a loss of ownership as a result of a legal liability. The article challenges the distinctions drawn by the Full Federal Court and argues that the decision marks a new development in setting a boundary for the Patents Act 1990 (Cth) "manner of manufacture". The article concludese that important questions now arise in assessing the possible application of the Patents Act 1990 (Cth) to promoting some inventions (and innovations) and not others, and whether there are other classes of inventions that also do not require the Patents Act 1990 (Cth) incentives.  相似文献   
956.
Partially in response to the increasing complexity of governance structures in the international environmental arena, international scholars have adopted a distinction between “Type 1” and “Type 2” international agreements. The former refer to agreements between governments, whereas the latter refer to agreements between governments and nonstate actors. While useful, this distinction offers only a partial taxonomy of the diversity of collaborative governance, and fails to incorporate “Type 3” dynamics among nonstate actors. As an initial attempt at sorting out the wide array of collaborative governance structures both domestically and across international borders, we propose a 3 × 3 matrix based on two typologies, one institutional (governmental, collaborative, nonstate), the other geopolitical (domestic, transborder, interstate/transnational). The result is a classification system of nine types of both domestic and international governance. In addition to identifying fundamental differences among the myriad forms of governance, the matrix reveals how the “softening of sovereignty” occurs in practice.
William R. MoomawEmail:
  相似文献   
957.
Although the construct of psychopathy is related to community violence and recidivism in various populations, empirical evidence suggests that its association with institutional aggression is weak at best. The current study examined, via both variable-level and group-level analyses, the relationship between standard violence risk instruments, which included a measure of psychopathy, and institutional violence. Additionally, the incremental validity of dynamic risk factors also was examined. The results suggest that PCL-R was only weakly related to institutional aggression and only then when the behavioral (Factor 2) aspects of the construct were examined. The clinical and risk management scales on the HCR-20, impulsivity, anger, and psychiatric symptoms all were useful in identifying patients at risk for exhibiting institutional aggression. These data suggest that factors other than psychopathy, including dynamic risk factors, may be most useful in identifying forensic patients at higher risk for exhibiting aggression.  相似文献   
958.
A total of 159 male inmates screened with the Psychological Inventory of Criminal Thinking Styles (PICTS) and Level of Service Inventory-Revised: Screening Version (LSI-R:SV) were followed for a period of 24 months for evidence of disciplinary infractions (incident reports). Eighty-three of these inmates also furnished a self-report of disciplinary infractions occurring during the 24-month follow-up. The PICTS General Criminal Thinking (GCT) score and LSI-R:SV total score correlated with and accurately identified the presence of an officially recorded disciplinary infraction, an officially recorded severe disciplinary infraction, and a self-reported disciplinary infraction but only age and the GCT score achieved incremental validity when age, GCT, and LSI-R:SV were included as predictors in the same probit regression or loglinear survival equation.  相似文献   
959.
This article compares three methods for estimating the medical cost burden of intimate partner violence against U.S. adult women (18 years and older), 1 year postvictimization. To compute the estimates, prevalence data from the National Violence Against Women Survey are combined with cost data from the Medical Expenditure Panel Survey, the Medicare 5% sample, and published studies and with relative risk estimates from published studies. Results are compared and reasons for difference are explored, including the advantages and disadvantages of each approach. Estimates of the medical cost burden of intimate partner violence within the first 12 months after victimization range from USD 2.3 billion to USD 7.0 billion, depending on the method used. Although limited to women victimized in the last year, each method reveals that intimate partner violence imposes a substantial burden on the health care system. Among the approaches, there is no clear gold standard nor any evidence of bias.  相似文献   
960.
After viewing or hearing a recorded simulated crime, participants were asked to identify the offender’s voice from a target-absent audio lineup. After making their voice identification, some participants were either given confirming feedback or no feedback. The feedback manipulation in experiment 1 led to higher ratings of participants’ identification certainty, as well as higher ratings on retrospective confidence reports, in both the immediate and delay groups. Earwitnesses who were asked about their identification certainty prior to the feedback manipulation (experiment 2) did not demonstrate the typical confidence-inflation associated with confirming feedback if they were questioned about the witnessing experience immediately; however, the effects returned after a week-long retention interval. The implications for the differential forgetting and internal-cues hypotheses are discussed.  相似文献   
设为首页 | 免责声明 | 关于勤云 | 加入收藏

Copyright©北京勤云科技发展有限公司  京ICP备09084417号