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   774篇
  免费   38篇
各国政治   64篇
工人农民   56篇
世界政治   54篇
外交国际关系   47篇
法律   380篇
中国共产党   1篇
中国政治   6篇
政治理论   197篇
综合类   7篇
  2023年   8篇
  2022年   9篇
  2021年   10篇
  2020年   20篇
  2019年   22篇
  2018年   47篇
  2017年   51篇
  2016年   45篇
  2015年   29篇
  2014年   37篇
  2013年   120篇
  2012年   35篇
  2011年   36篇
  2010年   31篇
  2009年   27篇
  2008年   22篇
  2007年   38篇
  2006年   20篇
  2005年   20篇
  2004年   25篇
  2003年   23篇
  2002年   13篇
  2001年   19篇
  2000年   21篇
  1999年   12篇
  1998年   7篇
  1997年   9篇
  1995年   2篇
  1994年   5篇
  1993年   3篇
  1992年   2篇
  1991年   1篇
  1990年   3篇
  1989年   4篇
  1988年   2篇
  1986年   1篇
  1985年   4篇
  1984年   4篇
  1983年   8篇
  1981年   3篇
  1980年   1篇
  1979年   1篇
  1978年   1篇
  1977年   2篇
  1976年   2篇
  1972年   1篇
  1970年   1篇
  1967年   1篇
  1966年   2篇
  1957年   1篇
排序方式: 共有812条查询结果,搜索用时 0 毫秒
111.
This paper studies firm entries and exits in Estonian urban areas, urban hinterlands, and rural peripheries following EU accession, and it analyzes the effects of changes in population density, employee income level, unemployment, and economic climate on firm entries and exits. It concludes that the firm entry rate exceeded the exit rate in all of the years between 2005 and 2012. The urban hinterland is characterized by the highest level of both entries and exits. The fixed-effect regression models show that income and recession, which are the most significant factors to impact on local entrepreneurship, have a similar effect on different municipality types.  相似文献   
112.
Kirchgässner  Gebhard 《Public Choice》2000,103(1-2):35-48
The introduction of voters' uncertainty alone is in no way sufficient to guarantee an equilibrium outcome of a voting process. What is needed in addition is the assumption that the voting probabilities depend strictly convex respectively concave of the utility losses caused by the proposed policies of the different parties. This assumption is, however, not compatible with an unrestricted policy space, and it has to be rejected for theoretical as well as empirical reasons. Thus, using models of probabilistic voting we still have to accept that cycles can arise and electoral outcomes are prone to manipulation via agenda setting.  相似文献   
113.
Abstract. This paper posits that countries with a constitutional right to social security that can be enforced by courts via judicial review will show patterns of spending on social security that are distinct from countries with other constitutional and judicial arrangements. Governments in countries with enforceable rights will be constrained to spend more on transfer programs to avoid censure from the courts. The hypotheses are tested using data from 22 OECD countries using time–series cross–section analysis. The results show that enforceable rights are associated with higher growth rates in social security spending and lower fluctuation in expenditures on social programs, although the amount of GDP spent on social transfers is unaffected by rights. These results are consistent with the idea that governments' spending habits are constrained by positive rights, but rebut the argument that rights lead to economic distortions.  相似文献   
114.
Behavioral interventions appealing to taxpayers’ reciprocity often leave tax compliance unaffected. We provide evidence that a “fiscal exchange nudge” increased tax compliance in a setting where one might not expect it: crisis-ridden Argentina. In a randomized controlled trial with over 20,000 taxpayers, a tax bill visually celebrating realized public works benefiting children increased payment rates of tax delinquents by about 20 percent, or almost 40 percent when the bills were delivered in person. Without the appeal, the new bill design generated significantly fewer payments. Changes in the design of the tax bill also increased arrears cancellation. We estimate the ratio of marginal revenues to costs for the fiscal exchange bill to be 18. The factors we associate with the unexpectedly positive impacts are consistent with strengthening an affective response. We find persistent effects of the experiment two years later. The results suggest that communities have more scope to increase tax revenues through non-threatening interventions.  相似文献   
115.
We investigated the specific impact of major depressive disorder (MDD) on the self-image of adolescent boys and girls seeking outpatient treatment. We used the Offer Self-Image Questionnaire (OSIQ) to compare 68 adolescents with MDD and 39 adolescents with no diagnosis of psychiatric illness according to the Structural Clinical Interview for DSM-III-R (SCID). Self-image among MDD patients was in general poorer than in the comparison group and was particularly expressed as dissatisfaction with life and an impaired mastery of the environment. Logistic regression analysis showed S2 (Emotional Tone) to be an independent factor associated with MDD (OR 1.15). In girls S2 was also independently associated with MDD (OR 1.14). The effect of MDD on self-image was more negative in girls than in boys and the self-image pattern differed between the sexes.  相似文献   
116.
目的 :观察清宫汤协助药物流产 (药流 )的作用 ,并探讨其机制。方法 :将 36 0例药流者随机分成单纯药流组 (不用其他任何中西药 )、催产素组 (待孕囊排出后用催产素 )、清宫汤组 (在药流当天服清宫汤 ) ,临床观察 3组出血情况 ,并进行动物实验。结果 :流产效果 :清宫汤组不全流产率明显低于单纯药流组 (P <0 .0 5 ) ;阴道出血疗效 :清宫汤组显效率及总有效率明显高于另两组 (P<0 .0 5 ) ;阴道出血量 :清宫汤组出血量少者明显多于单纯药流组 (P <0 .0 5 )。动物实验证实 ,清宫汤能增强动情小鼠体外子宫平滑肌的收缩功能 ,增加收缩频率和活动力 ,并能减轻小鼠耳郭肿胀及抑制冰醋酸所致的腹腔血管通透性增高 ,与对照组比较 ,差异有显著性 (P <0 .0 5或P <0 .0 1)。结论 :清宫汤可配合药流提高流产效果 ,减少不全流产 ,缩短出血时间 ,减少出血量 ,安全有效  相似文献   
117.
Research on child‐related risk factors for filicide is scant. We investigated whether prior healthcare use for injury (including poisoning) influences filicide risk. Victims (0–14 years; n = 71) were identified in a national autopsy database for the years 1994–2012 and compared to matched, general population controls (n = 355). Healthcare use data were retrieved from a national patient registry. Risks were estimated using odds ratios (ORs) and 95% confidence intervals (CIs). For females, prior inpatient care for injury conferred a statistically significant sevenfold risk (OR = 6.67 [95% CI: 1.49–29.79]), and any prior injury‐related healthcare use conferred a statistically significant fourfold risk (OR = 3.57 [95% CI: 1.13–11.25]), of filicide victimization. No statistically significant risks were found for males. Healthcare personnel should be aware that children treated for injuries, especially females, may be at an elevated risk of filicide victimization. Nevertheless, the filicide base rate remains low, and parents may be stigmatized by unfounded alerts; thus, prudent reflection should precede reports to the authorities.  相似文献   
118.
This study aimed to develop an aquatic decomposition scoring (ADS) method and investigated the predictive value of this method in estimating the postmortem submersion interval (PMSI) of bodies recovered from the North Sea. This method, consisting of an ADS item list and a pictorial reference atlas, showed a high interobserver agreement (Krippendorff's alpha ≥ 0.93) and hence proved to be valid. This scoring method was applied to data, collected from closed cases—cases in which the postmortal submersion interval (PMSI) was known—concerning bodies recovered from the North Sea from 1990 to 2013. Thirty‐eight cases met the inclusion criteria and were scored by quantifying the observed total aquatic decomposition score (TADS). Statistical analysis demonstrated that TADS accurately predicts the PMSI (p < 0.001), confirming that the decomposition process in the North Sea is strongly correlated to time.  相似文献   
119.
Neurocognitive deficits and psychiatric disorders are often brought up as risk factors of recidivism. In this study, we investigated how neurocognitive and academic deficits and psychiatric disorders (including substance dependence) are associated with criminal recidivism and prison career among male offenders. In a health survey of Finnish prisoners, 72 sentenced male prisoners were examined in Turku prison using a neurocognitive test battery and psychiatric assessment including a standardized psychiatric interview (SCID-I, II). The neurocognitive and academic tests were chosen to assess domains of cognitive functioning and reading, spelling and mathematical skills. Our results showed that the combination of neurocognitive deficits and substance dependence was connected to recidivism. Axis I diagnosis (major mental disorders) and substance dependence were connected with neurocognitive and academic deficits. Moreover, first-time offenders had fewer neurocognitive deficits and Axis I disorders, less substance dependence and fewer personality disorders than those with several convictions. Rehabilitation of cognitive functions and academic skills, along with intervention for mental health problems and substance dependence could help to prevent the unfavourable circle of criminal career.  相似文献   
120.
Abstract: Surveys are sometimes used to assess preferences towards policy issues that are remote from experience and that have never been publicly discussed. How do these preferences of isolated survey respondents compare with preferences expressed by voters who have access to advice from competing political parties? I address this question by conducting a field experiment with a sample of the general public in which I experimentally control the subjects’ access to the actual positions of competing parties and interest groups on specific novel policy propositions. Access to party positions decreased approval of the proposed environmental policy among right‐wing voters by over fifty percent, and this effect was similar for different educational groups. When voters had access to party positions, their policy preferences were more consistent with their general political orientation. I conclude by discussing implications of these results for the debate about voter competence and for preference elicitation using surveys.  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