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   13423篇
  免费   719篇
各国政治   797篇
工人农民   421篇
世界政治   1110篇
外交国际关系   688篇
法律   7593篇
中国政治   87篇
政治理论   3313篇
综合类   133篇
  2023年   76篇
  2021年   92篇
  2020年   254篇
  2019年   316篇
  2018年   350篇
  2017年   409篇
  2016年   418篇
  2015年   321篇
  2014年   358篇
  2013年   1798篇
  2012年   323篇
  2011年   349篇
  2010年   375篇
  2009年   405篇
  2008年   331篇
  2007年   388篇
  2006年   371篇
  2005年   402篇
  2004年   411篇
  2003年   364篇
  2002年   370篇
  2001年   436篇
  2000年   370篇
  1999年   329篇
  1998年   193篇
  1997年   155篇
  1996年   160篇
  1995年   172篇
  1994年   183篇
  1993年   173篇
  1992年   236篇
  1991年   251篇
  1990年   212篇
  1989年   228篇
  1988年   190篇
  1987年   204篇
  1986年   193篇
  1985年   201篇
  1984年   153篇
  1983年   183篇
  1982年   128篇
  1981年   133篇
  1980年   93篇
  1979年   145篇
  1978年   105篇
  1977年   94篇
  1976年   84篇
  1975年   60篇
  1974年   70篇
  1973年   70篇
排序方式: 共有10000条查询结果,搜索用时 15 毫秒
941.
942.
943.
Three experiments were conducted to explore whether children's recall of an occurrence of a repeated event could be improved by encouraging them to consider various details that occurred across a series of events prior to making a judgement about which details were included in the target (to-be-recalled) occurrence. Experiment 1 explored whether children's recall of the target occurrence was better after the interviewer presented all the items from the series prior to the child identifying the final item. Experiment 2 explored whether having the children generate all the items facilitated their subsequent recall of the target occurrence. Finally, Experiment 3 directly compared the effectiveness of the above 2 procedures. Regardless of the children's age, the retention interval, or the type of item, children's capacity to identify which details were included in a target occurrence was enhanced when they were initially provided with all the possible details from the series of events. However, without relying on the interviewer to generate the options, the benefit of the technique was directly contingent on the children's ability to generate content details; this was a distinct source of difficulty for the children. Indeed, having children generate options had no beneficial effect on decisions about the temporal position of items unless performance was made conditional on the children's ability to remember the relevant details in the first place. The implications of the findings for the legal setting and for future research are discussed.  相似文献   
944.
945.
946.
Allele frequencies for eight tetranucleotide short tandem repeat (STR) loci-CSF1PO, TPOX, TH01, F13A01, FESFPS, vWA, F13B, LPL-were obtained from a population sample of 105-122 unrelated individuals born in Transylvania and Banat (Romania).  相似文献   
947.
Gunshot wounds in suicide cases are self-inflicted wounds. Self-inflicted wounds in suicide cases are usually caused by contact firing and are of great forensic significance. Evaluation of contact wound may be associated with difficulties if the bore gets obstruction prior to firing. This paper investigates the phenomenon and interprets the results of test firing conducted on 20% gelatine block at 10 degrees C, using .38 Special revolver with obstruction of a bullet in the bore. Test firings were conducted in three different muzzle-target contact conditions keeping the muzzle pressed against the gel block in each case. The physical evidence and the wound ballistic parameter namely bullet track, remaining velocity of the bullets and volume of permanent cavity have been studied. When compared with the results of contact firing conducted with the same firearm without having any bore obstruction under similar conditions, it has been found that the physical evidence and the wound ballistic parameters would be helpful for interpretation of such unusual incidents for forensic inference.  相似文献   
948.
A 30-year-old male died in Thailand after a scuffle. The corpse was embalmed and repatriated to France where an autopsy was performed. As usual in cases of embalmment, fluids such as blood and urine were unavailable and the toxicological analyses was performed on the bile and the liver. An overdose of heroin was determined as the cause of death. A review of the literature indicates that several drugs can be detected in fluids and tissues that contain formaldehyde. This case demonstrates that in embalmed corpses, toxicological assessment is still possible, e.g. after heroin fatalities.  相似文献   
949.
This is a 5-year follow-up study of recidivism among 601 male graduates of a boot camp for adults in a southern state. Cox's proportional hazard analysis is used to determine the hazard rate of recidivism (arrest or parole violation) of several elements of general and developmental models. Analyses are conducted according to age of onset of unlawful behavior (10 years old or younger and older than 10 years). Findings indicate that caregiving factors have inverse relations with the hazard of recidivism, whereas low self-control, deficits in social skills, peer association with criminals, gang membership, drug use and sales, and carrying weapons have positive relationships with this hazard. These findings are observed irrespective of the age when persons begin committing offenses. Implications of the findings for theoretical models is discussed.  相似文献   
950.
Consistent with previous research, almost half of a sample of 41 pet-owning battered women reported that their partners had threatened or actually harmed their pets, and over a fourth reported that concern for their pets had affected their decisions about leaving or staying with the batterer. Differences between rural and urban women were not significant, although higher proportions of rural than urban women reported that their partners had threatened or harmed their pets and that concern for their pets had affected their decisions. For the sample as a whole, logistic regression analyses showed that women whose pets had been threatened or harmed were significantly more likely to report that concern for their pets had affected their decisions about leaving or staying. The findings suggest that service providers should inquire about battered women's concern for their pets and should include arrangements for animals in safety planning.  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