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   516篇
  免费   32篇
各国政治   13篇
工人农民   79篇
世界政治   20篇
外交国际关系   15篇
法律   315篇
中国共产党   1篇
中国政治   9篇
政治理论   94篇
综合类   2篇
  2023年   5篇
  2022年   6篇
  2021年   6篇
  2020年   24篇
  2019年   18篇
  2018年   24篇
  2017年   22篇
  2016年   34篇
  2015年   19篇
  2014年   20篇
  2013年   64篇
  2012年   20篇
  2011年   24篇
  2010年   18篇
  2009年   30篇
  2008年   33篇
  2007年   26篇
  2006年   19篇
  2005年   20篇
  2004年   23篇
  2003年   22篇
  2002年   18篇
  2001年   6篇
  2000年   3篇
  1999年   6篇
  1998年   8篇
  1997年   2篇
  1996年   5篇
  1994年   3篇
  1993年   3篇
  1992年   1篇
  1991年   3篇
  1990年   1篇
  1989年   1篇
  1987年   2篇
  1986年   1篇
  1985年   1篇
  1984年   1篇
  1983年   1篇
  1982年   1篇
  1980年   2篇
  1978年   1篇
  1976年   1篇
排序方式: 共有548条查询结果,搜索用时 93 毫秒
21.
Few communities welcome federally subsidized rental housing, with one of the most commonly voiced fears being reductions in property values. Yet there is little empirical evidence that subsidized housing depresses neighborhood property values. This paper estimates and compares the neighborhood impacts of a broad range of federally subsidized rental housing programs, using rich data for New York City and a difference‐in‐difference specification of a hedonic regression model. We find that federally subsidized developments have not typically led to reductions in property values and have, in fact, led to increases in some cases. Impacts are highly sensitive to scale, though patterns vary across programs. © 2007 by the Association for Public Policy Analysis and Management  相似文献   
22.
Dickinson A 《Time》2002,159(15):F5-F6
  相似文献   
23.
An integrative, ecological model developed by Belsky (1980) implies that to understand child abuse researchers must examine factors at four levels: the individual, the family, the environment, and the culture. This study compared abusive and nonabusive parents at three of these four levels. At the individual level, abusers were found to have lower self-esteem than controls. Also, male abusers were likely to be relatively impulsive and hostile. At the level of the family, abusers described their children as more troublesome than control parents, but they did not perceive them as developmentally delayed. At the level of the environment, abusers identified more intense life stressors than nonabusers. Results of this investigation supported Belsky's argument that child abuse involved multiple factors and levels.  相似文献   
24.
25.
26.
A simple method for analyzing nitrite in urine has been developed to confirm and quantify the amount of nitrite in potentially adulterated urine samples. The method involved separation of nitrite by capillary electrophoresis and direct UV detection at 214 nm. Separation was performed using a bare fused silica capillary and a 25 mM phosphate run buffer at a pH of 7.5. Sample preparation consisted of diluting the urine samples 1:20 with run buffer and internal standard, and centrifuging for 5 min at 2500 rpm. The sample was hydrodynamically injected, then separated using -25 kV with the column maintained at 35 degrees C. The method had upper and lower limits of linearity of 1500 and 80 microg/mL nitrite, respectively, and a limit of detection of 20 microg/mL. The method was evaluated using the National Committee for Clinical Laboratory Standards (NCCLS) protocol (Document EP10-A2), and validated using controls, standards, and authentic urine samples. Ten anions, ClO-, CrO4(-2), NO3-, HCO3-, I-, CH3COO-, F-, SO4-, S2O8(-2), and Cl-, were tested for potential interference with the assay. Interferences with quantitation were noted for only CrO4(-2) and S2O8(-2). High concentrations of Cl- interfered with the chromatography. The method had acceptable accuracy, precision, and specificity.  相似文献   
27.
The present study is an initial examination of the extent to which the environmental characteristics of bars and social behaviors that women engage in when drinking in this setting are associated with bar-related aggression. As expected, several environmental characteristics (e.g., young patrons, pool playing) and social behaviors (e.g., alcohol consumption, leaving the bar with strangers) were associated with more severe bar-related aggression experienced by women during the past year. These results shed light on the significant problem of bar-related aggression against women and can potentially be used to develop prevention and educational programs.  相似文献   
28.
A 29-year old female with a history of depression was found dead in a hotel room. The death scene investigation found empty pill bottles and an empty liter bottle of wine. Metaxalone, a centrally acting muscle relaxant, along with citalopram, ethanol, and chlorpheniramine were identified in the postmortem samples and quantitated by gas chromatography-mass spectrometry. The concentration of metaxalone in femoral vein blood was 39 mg/L. The heart blood concentration was 54 mg/L. Femoral vein blood concentrations of citalopram and chlorpheniramine were 0.77 mg/L and 0.04 mg/L, respectively. Ethanol levels were 0.13 g/dL in vitreous and 0.08 g/dL in heart blood. Other tissue samples were also analyzed. The authors consider the metaxalone concentrations toxic and potentially fatal. The citalopram concentrations were lower than those reported in fatal cases for this drug alone. Death was ascribed to polydrug abuse/overdose with metaxalone a major contributor. This represents the first reported case to our knowledge in which a metaxalone overdose significantly contributed to death.  相似文献   
29.
30.
Amended final-offer arbitration (AFOA) has been developed asan attractive alternative mechanism to final-offer arbitration(FOA). Under AFOA, more reasonable offers win, but the outcomeis determined by the loser's offer and the arbitrator's value.In AFOA, disputants making extreme offers are penalized, therebyencouraging compromise. This article compares the theoreticaland behavioral properties of AFOA and FOA. Controlled laboratoryexperiments indicate that AFOA significantly outperforms FOA,generating substantially greater prearbitration settlement.Consistent with theoretical predictions, offers converge underAFOA; however, FOA offers neither converge nor are consistentwith theoretical predictions. This work suggests practitionersshould consider adopting AFOA over FOA.  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