全文获取类型
收费全文 | 12145篇 |
免费 | 1290篇 |
专业分类
各国政治 | 442篇 |
工人农民 | 400篇 |
世界政治 | 932篇 |
外交国际关系 | 339篇 |
法律 | 9165篇 |
中国共产党 | 1篇 |
中国政治 | 89篇 |
政治理论 | 1991篇 |
综合类 | 76篇 |
出版年
2020年 | 356篇 |
2019年 | 364篇 |
2018年 | 430篇 |
2017年 | 496篇 |
2016年 | 487篇 |
2015年 | 453篇 |
2014年 | 441篇 |
2013年 | 1240篇 |
2012年 | 296篇 |
2011年 | 377篇 |
2010年 | 541篇 |
2009年 | 497篇 |
2008年 | 299篇 |
2007年 | 268篇 |
2006年 | 361篇 |
2005年 | 253篇 |
2004年 | 239篇 |
2003年 | 237篇 |
2002年 | 216篇 |
2001年 | 453篇 |
2000年 | 352篇 |
1999年 | 305篇 |
1998年 | 149篇 |
1997年 | 134篇 |
1996年 | 107篇 |
1995年 | 138篇 |
1994年 | 145篇 |
1993年 | 122篇 |
1992年 | 220篇 |
1991年 | 237篇 |
1990年 | 218篇 |
1989年 | 230篇 |
1988年 | 210篇 |
1987年 | 179篇 |
1986年 | 209篇 |
1985年 | 225篇 |
1984年 | 224篇 |
1983年 | 187篇 |
1982年 | 147篇 |
1981年 | 131篇 |
1980年 | 130篇 |
1979年 | 150篇 |
1978年 | 94篇 |
1977年 | 81篇 |
1976年 | 68篇 |
1975年 | 72篇 |
1974年 | 79篇 |
1973年 | 65篇 |
1972年 | 55篇 |
1971年 | 59篇 |
排序方式: 共有10000条查询结果,搜索用时 27 毫秒
911.
912.
913.
Jeffrey A. Goldman Charles M. Rosenzweig Ann D. Lutter 《Journal of youth and adolescence》1980,9(2):153-162
Similarity of ego identity status, assessed by Marcia's four-category classification system, was related to interpersonal attraction. Using male and female college students as subjects, this study found that (1) while all judges preferred targets who had or who are undergoing a crisis to those who have not had a crisis, (2) diffuse judges preferred targets with no commitments to those with commitments, and (3) judges with commitments preferred a foreclosure target more than judges without commitments. Differential evaluations of the targets' intelligence, knowledge of current events, adjustment, and morality were also found. Results are discussed both in terms of previous research positively relating personality similarity to attraction and Erikson's theory of the relationship between ego identity development and intimacy in interpersonal relations. 相似文献
914.
Robert D. Enright Daniel K. Lapsley Ann E. Drivas Lawrence A. Fehr 《Journal of youth and adolescence》1980,9(6):529-545
Two studies were undertaken to examine parental influences on autonomy and identity development. In Study 1, 262 adolescents in seventh and eleventh grades were given Kurtines's autonomy measure, Simmons's identity measure, and Elder's questions regarding the adolescents' perceptions of their parents' autocratic, democratic, or permissive parenting styles. Study 2 was a replication with 168 subjects. Across both studies it was found that sex-role socialization is more influential for automony development than is either level of parental power or age. Both age and father's use of democracy were the most influential variables on identity development.Received Ph.D. from the University of Minnesota. Major interests are adolescent social cognition and social development.Major interests are adolescent social cognition and social development.Major interests are adolescent social cognition and social development.Received Ph.D. from the University of Cincinnati. Major interests are cognitive development and theories of personality. 相似文献
915.
Adam Crawford 《European Journal on Criminal Policy and Research》1999,7(4):509-530
This article casts a critical eye over some of the (often ignored) assumptions which underlie recent appeals to community in crime prevention and control. The article considers the philosophical origins, ambiguities and tensions within such appeals. In so doing, it draws explicitly upon the growth of community safety and to a lesser extent restorative justice in Britain and considers some of the implications to which this shift may give rise. In particular, it focuses upon the manner in which appeals to community converge and collide with changing social relations which may undermine their progressive potential. Specific attention is given to the implications of: increasing social and spatial dislocation; the commodification of security; and policy debates about a growing underclass. It is argued that there is much confusion as to how, and to what extent, communities can contribute to the construction of social order. Within the dynamics of community safety and crime control practices there are dangers that security differentials may become increasingly significant characteristics of wealth and status with implications for social exclusion. This questions the extent to which crime is an appropriate vehicle around which to (re)construct open and tolerant communities. 相似文献
916.
917.
Morgan D 《Journal of health law》1999,32(2):269-306
Alzheimer's Disease presents extreme challenges not only to the individuals afflicted with it and their families, but also to both our legal and healthcare systems. The nature of the disease is such that current legal standards and requirements simply fail to function in an appropriate manner. So too, the health system currently is not in a position to handle the anticipated influx of Alzheimer's patients over the next several decades. This Article examines some of the challenges presented by this disease, and suggests several possible methods to improve our response to it. 相似文献
918.
H Brown D M Cauchi J L Holden F C Allen S Cordner P Thatcher 《Forensic science international》1999,100(3):179-186
A statistical investigation of the relationship between firing range and the amount and distribution of gunshot residue (GSR), used automated image analysis (IA) to quantify GSR deposit resulting from firings into pig skin, from distances ranging between contact and 45 cm. Overall, for a Ruger .22 semi-automatic rifle using CCI solid point, high velocity ammunition, the total area of GSR deposit on the skin sections decreased in a non-linear fashion with firing range. More specifically there were significant differences in the amount of GSR deposited from shots fired at contact compared with shots fired from distances between 2.5 and 45 cm; and between shots fired from a distance of 20 cm or less, with shots fired at a distance of 30 cm or more. In addition, GSR particles were heavily concentrated in the wound tract only for contact and close range shots at 2.5 cm, while the particle distribution was more uniform between the wound tract and the skin surfaces for shots fired from distances greater than 2.5 cm. Consequently, for future scientific investigations of gunshot fatalities, once standards have been established for the weapon and ammunition type in question, image analysis quantification of GSR deposited in and around the gunshot wound may be capable of providing a reliable, statistical basis for estimating firing range. 相似文献
919.
Wilkinson D 《Forensic science international》1999,99(1):5-23
This paper describes the development of a one-step fluorescent lipid reagent that involves europium chelates whose generic formula can be represented as europium(organic ligand)3.2(synergic reagent). An optimized formulation is presented and a comparison with physical developer was conducted which showed the new technique to be very good when fresh fingerprints were recovered but inferior to physical developer on aged prints (over a week). In addition, the compatibility of the technique with sequential methods such as ninhydrin and DFO is reported. The experimentation, results and chemical formulation of this study were presented to delegates of the International Symposium on Fingerprint Detection and Identification held in Israel in June 1995. Prior to that a patent application had been made. 相似文献
920.
Khokhlov VD 《Forensic science international》1999,104(2-3):147-162
The article presents the analysis of knitted trauma to the hyoid bone and laryngeal cartilages, revealed while searching for fresh fractures of the laryngopharynx skeleton for medico-legal purposes. Neck organocomplexes (n = 440) were completely prepared after fixation in formalin. Old injuries were found in 17.3% of cases, and in 3.2% of cases two elements of the complex were formerly broken. More often there was consolidated trauma to the thyroid (11.4% of cases) and cricoid cartilages (7.3%) and, rarely, to the hyoid bone (1.6%) and cervical part of the trachea (0.2%). These injuries occurred twice as often in men (20.3% of cases) than in women (P < 0.01). Substantiated conclusions are: (1) people of working age are most prone to neck trauma; and (2) from the 1960s the percentage of such traumas in the St. Petersburg region has grown due to urbanization. This article presents data on the localization and morphology of the injuries, as well as a review of symptoms and the course of blunt neck trauma. Despite the difficulties associated with the complete regeneration of injured tissues, forensic pathologists can obtain certain information which police officials may be interested in. 相似文献