全文获取类型
收费全文 | 10696篇 |
免费 | 133篇 |
专业分类
各国政治 | 485篇 |
工人农民 | 470篇 |
世界政治 | 600篇 |
外交国际关系 | 873篇 |
法律 | 6189篇 |
中国共产党 | 3篇 |
中国政治 | 74篇 |
政治理论 | 2051篇 |
综合类 | 84篇 |
出版年
2021年 | 62篇 |
2020年 | 144篇 |
2019年 | 194篇 |
2018年 | 249篇 |
2017年 | 265篇 |
2016年 | 264篇 |
2015年 | 196篇 |
2014年 | 234篇 |
2013年 | 1144篇 |
2012年 | 326篇 |
2011年 | 357篇 |
2010年 | 274篇 |
2009年 | 299篇 |
2008年 | 323篇 |
2007年 | 300篇 |
2006年 | 318篇 |
2005年 | 285篇 |
2004年 | 296篇 |
2003年 | 264篇 |
2002年 | 270篇 |
2001年 | 279篇 |
2000年 | 290篇 |
1999年 | 202篇 |
1998年 | 135篇 |
1997年 | 140篇 |
1996年 | 120篇 |
1995年 | 117篇 |
1994年 | 108篇 |
1993年 | 121篇 |
1992年 | 194篇 |
1991年 | 207篇 |
1990年 | 189篇 |
1989年 | 186篇 |
1988年 | 171篇 |
1987年 | 188篇 |
1986年 | 180篇 |
1985年 | 171篇 |
1984年 | 167篇 |
1983年 | 175篇 |
1982年 | 101篇 |
1981年 | 110篇 |
1980年 | 90篇 |
1979年 | 114篇 |
1978年 | 78篇 |
1977年 | 81篇 |
1976年 | 68篇 |
1975年 | 69篇 |
1974年 | 66篇 |
1973年 | 83篇 |
1972年 | 65篇 |
排序方式: 共有10000条查询结果,搜索用时 0 毫秒
831.
Julia M. Whealin Stephenie Davies Anne E. Shaffer Joan L. Jackson Leslie C. Love 《Journal of family violence》2002,17(2):151-165
Unwanted sexual attention (UWSA) encompasses unsolicited verbal comments, gestures, stares, and other noncontact behaviors made regarding one's sexuality and physical appearance. The present study examined the correlates and impact of such UWSA perpetrated toward girls by family members. The first objective of the study was to explore whether family climate is associated with intrafamilial UWSA. This included looking at three types of dysfunctional parenting styles (unaffectionate, unavailable, and patriarchal) as well as exploring the co-occurrence of UWSA by adult and child relatives. The second objective was to then measure the impact of such intrafamilial UWSA on childhood emotional health, after controlling for parenting style and the experience of more traditional forms of child sexual abuse (CSA). Of the 296 university women (mean age = 19) who participated in the study, 70% (N = 206) reported UWSA from a family member prior to age 18. Whereas each dysfunctional parenting style was related to presence of UWSA, a simultaneous multiple regression analysis indicated that two of the parenting styles, patriarchal and parental unavailability, also predicted frequency of nonphysical UWSA within the family. Presence of UWSA from a child relative was significantly correlated with presence of UWSA from an adult relative. Additionally, a hierarchical multiple regression, entering the three parenting styles simultaneously in the first step, childhood sexual abuse in the second step, and familial UWSA in the last step, indicated that the frequency of UWSA by family members significantly predicted poorer childhood mental health when controlling for the other variables. Overall, results indicate that while the specific parenting styles which co-occur with UWSA may be detrimental in their own right, the impact of UWSA on girls appears to be above and beyond that of either parenting styles or CSA. Clinical implications are discussed. 相似文献
832.
On the basis of the uncertainty management model, we argue here that when people are uncertain about an organization's trustworthiness, they may resolve the question how they should react toward the organization by relying on their perceptions of the organization's procedures. As a consequence, we predicted that the reactions of parents whose child was in a day care center would be strongly influenced by their perceptions of the procedures used by the organization that was responsible for their children's day care when the parents would be uncertain about the organization's trustworthiness. However, when parents would be certain that the organization could be trusted they would be less in need of procedural information, yielding less strong effects of perceived procedure on parents' reactions. The findings of a survey study corroborate this line of reasoning. In the discussion it is argued that these findings suggest that people especially rely on their perceptions of procedures when they are uncertain about important aspects of their lives, such as the trustworthiness of organizations that are responsible for their children's day care. 相似文献
833.
A modification of quantitative absorption and absorption elution tests with blood stain washing before the absorption phase is presented. Due to washing, the effect of carrier object on anti-Le(a) and anti-Le(b) sera is decreased and the sensitivity of the method is increased. Additional adsorption of the sera and elution into test erythrocytes treated with protease C is suggested for increasing the number of standard sera fit for the absorption-elution test. A new technology for preparing anti-Le(a) and anti-Le(b) immunoreagents is described. 相似文献
834.
This study provided some new empirical evidence relating to the hypothesis that there was convergence between certain male and female offenses over time. Using time-series data for adults charged with offenses in Canada over the period 1983 to 2000, several formal statistical tests of this convergence hypothesis were conducted. This study allowed for the particular characteristics of the data, such as various types of structural breaks and changes over time in the process that generated the data. A number of new tests that had not previously been applied to this problem were employed, and the results that were obtained provided the first strong evidence in favor of gender-convergence for a range of offenses in Canada. 相似文献
835.
This brief report explores dating violence by comparing three groups of male college students (nonabusive, psychologically abusive only, and physically abusive). These men were compared on measures of impulsivity, problems with alcohol, life satisfaction, anger management skills, history of witnessing abuse, history of experiencing abuse, and relationship satisfaction. Data for this analysis were obtained from a sample of 115 male college students. Differences between the three groups of men were found in the levels of problems with alcohol, relationship satisfaction, and anger management skills. Anger management skills best differentiated the three groups of men leading to the conclusion that dating violence prevention and intervention strategies with male college students should address anger management skills. 相似文献
836.
The nature and extent of the use of blank pistols in Hamburg (according to the Hamburg crime statistics about 300 to 400 such cases per year; 34 cases involving head and neck wounds from 1989 to 1999 were investigated at our institute; among these 8 suicides, no homicide) as well as patterns of injuries caused by close distance blank pistol shots were analysed. 7 of these cases are described in detail. The results of our studies corroborate the warning statements made by many criminological and medico-legal experts regarding the danger inherent in these allegedly harmless weapons. Blank cartridge pistols can, when shot from a close distance, cause most severe injuries involving penetration into body cavities and bodily organs (especially in the head and neck), and even perforation of the skull. Therefore, we call for a much stricter control of weapons of this kind. 相似文献
837.
Grattapaglia D Schmidt AB Costa e Silva C Stringher C Fernandes AP Ferreira ME 《Forensic science international》2001,118(1):91-94
Allele frequencies for the 13 STR core loci (D3S1358, VWA, FGA, D8S1179, D21S11, D18S51, D5S818, D13S317, D7S820, CSF1PO, TPOX, THO1 and D16S539) included in the AmpFlSTR((R)) Profiler Plus and AmpFlSTR((R)) Cofiler kits were obtained for a sample of 700-800 genetically unrelated Brazilians. The expected performance of these loci for personal identification and paternity testing in the Brazilian population was estimated. 相似文献
838.
Scanning electron microscopy (SEM) has occasionally been used by anthropologists and forensic scientists to look at morphological characteristics that certain implements leave on bone. However, few studies have addressed techniques or protocols for assessing quantitative differences between tool marks on bone made by different bladed implements. In this study, the statistical variation in cut mark width was examined between control and test samples on bone using a scalpel blade, paring knife, and kitchen utility knife. Statistically significant differences (p < .0005) were found between cut marks made by the same knife under control and test conditions for all three knife types used in the study. When the control sample and test samples were examined individually for differences in mean variation between knife types, significant differences were also found (p < .0005). While significant differences in cut mark width were found, caution should be used in trying to classify individual cut marks as being inflicted by a particular implement, due to the overlap in cut mark width that exists between different knife types. When combined, both quantitative and qualitative analyses of cut marks should prove to be more useful in trying to identify a suspect weapon. Furthermore, the application of SEM can be particularly useful for assessing many of these features. 相似文献
839.
840.