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791.
    
Throughout the twentieth century, the city of Khartoum was the subject of analyses and knowledge produced by diverse actors, such as scholars, urban planners, government agents and institutions, urban dwellers and, more recently, actors from the humanitarian and private sectors. The aim of this article is to offer a critical analysis of Sudan urban studies from the 1970s onwards, and to illustrate their strengths and shortcomings. A revisitation of the work of anthropologist Richard Lobban on Tuti Island, where I recently conducted ethnographic fieldwork, will allow me to comment on Marxist anthropology as the theoretical framework used by Sudanist scholars in the early decades of urban studies, to focus on methodological strategies for data collection, and to analyse the use of concepts such as “urbanisation” and “community”. These reflections will be used to suggest a research agenda for urban studies in Sudan, as well as recent academic approaches to the treatment of the urban question.  相似文献   
792.
    
Many prisoners leaving custody are homeless, jobless and poor. They are given a discharge grant by the Home Office to meet their immediate needs on release. For many, it is their only source of income until they find a job or, more commonly, receive their first benefit cheque. This paper reviews the immediate needs of prisoners on release from custody and then examines how far the discharge grant is adequate in meeting these needs. In-depth interviews were conducted with prisoners both before and after release from custody. These included ten men in prison who were within two or three weeks of release and 14 men who had been released from prison within the previous month. Interviews suggested that the grant lasted only a few days, leaving ex-prisoners with very little to cover even basic needs in the two weeks before they were entitled to receive any income support.  相似文献   
793.
    
A total of 2443 male individuals, previously typed for the 13 CODIS STR loci, distributed across the five North American population groups African American, Asian, Caucasian, Hispanic, and Native American were typed for the Y-STR loci DYS19, DYS385a/b, DYS389I/II, DYS390, DYS391, DYS392, DYS393, DYS437, DYS438 and DYS439 using the PowerPlex Y System. All population samples were highly polymorphic for the 12 Y-STR loci with the marker DYS385a/b being the most polymorphic across all sample populations. The Native American population groups demonstrated the lowest genetic diversity, most notably at the DYS393 and DYS437 loci. Almost all of the 12-locus haplotypes observed in the sample populations were represented only once in the database. Haplotype diversities were greater than 99.6% for the African Americans, Caucasians, Hispanics, and Asians. The Native Americans had the lowest haplotype diversities (Apaches, 97.0%; Navajo, 98.1%). Population substructure effects were greater for Y-haplotypes, compared with that for the autosomal loci. For the apportionment of variance for the 12 Y-STRs, the within sample population variation was the largest component (>98% for each major population group and approximately 97% in Native Americans), and the variance component contributed by the major population groups was less than the individual component, but much greater than among sample populations within a major group (11.79% versus 1.02% for African Americans/Caucasians/Hispanics and 15.35% versus 1.25% for all five major populations). When each major population is analyzed individually, the R(ST) values were low but showed significant among group heterogeneity. In 692 confirmed father-son pairs, 14 mutation events were observed with the average rate of 1.57x10(-3)/locus/generation (a 95% confidence bound of 0.83x10(-3) to 2.69x10(-3)). Since the Y-STR loci reside on the non-recombining region of the Y chromosome, the counting method is one approach suggested for conveying an estimate of the rarity of the Y-haplotype. Because the Y-STR loci are not all in disequilibrium to the same extent, the counting method is a very conservative approach. The data also support that autosomal STR frequencies can be multiplied by the upper bound frequency estimate of a Y-haplotype in the individual population group or those pooled into major population groups (i.e., Caucasian, African American, Hispanic, and Asian). These analyses support use of the haplotype population data for estimating Y-STR profile frequencies for populations residing in North America.  相似文献   
794.
We assessed perceptions of vulnerability and the desire for personal safety/self-defense (PS/SD) training among 67 female veterans receiving outpatient mental health treatment, primarily for post-traumatic stress disorder (PTSD) from sexual and/or physical trauma. Consistent with the literature on the impact of such training on nonclinical populations and on individuals with visual impairments, the results of this study indicate that traumatized female veterans believe that PS/SD training would be an effective and powerful addition to more traditional treatments for PTSD. Study participants indicated they believe such training would positively affect their sense of personal safety; promote increased competence in thwarting future assaults; improve their self-esteem, confidence, and assertiveness; and reduce avoidant and agoraphobic behaviors. These pilot results support the development of an adjunct intervention to augment current PTSD treatments for women veterans with histories of sexual and physical trauma.  相似文献   
795.
796.
Classification of ignitable liquids in accordance with voluntary consensus-based standards published by ASTM International has become increasingly specific, relying upon both the chemical composition and the boiling point range of submitted ignitable liquids. This classification system includes among others, specific classes for distillates and dearomatized distillates. In this study, a variety of medium-range ignitable liquids were analyzed by gas chromatography-mass spectrometry. Several methods of data analysis were utilized to examine the relative aliphatic and aromatic contents in these liquids. Results show that commercially available products in the medium range exhibit a broad range of compositions with respect to the relative proportion of aliphatic and aromatic compounds and that some liquids may not be easily classified. This study demonstrates the importance of examining the proportion of aliphatics:aromatics for classifying such liquids and suggests guidelines for differentiating medium range distillates, dearomatized distillates, and blended products.  相似文献   
797.
The Internet opens a vast array of communication, entertainment, and educational resources for children; however, it also opens a gateway to home and school for offenders who wish to exploit children. A convenience sample of 225 cases published in the news media was examined. The cases were classified using law enforcement terminology to describe Internet offenders as traders, travelers, or combination trader-travelers. The media is seen as a critical source of information for the public to be aware of how the Internet is being used to commit sexual exploitation and sex crimes against children.  相似文献   
798.
799.
Two studies were conducted to investigate the relationship between several nonintellectual personal attributes and satisfaction with acceleration among intellectually gifted students. First, two cohorts of gifted students (top 1% in ability and separated in age by five years) who had utilized acceleration during the course of their education were surveyed at age 18 and again at age 23. Overall, no strong relationships were found between satisfaction with acceleration and the nonintellectual factors at either age. Second, similar analyses were conducted for a subgroup of subjects, using the Adjective Check List and the Study of Values. Again, few significant correlations were found; the correlations that were statistically significant were small. These findings indicate that some non-intellectual personal attributes, which are often assumed important to the selection of students for acceleration or to the evaluation of participants in accelerative programs, actually may not be appropriate for these purposes.This research was supported by grants to Camilla Benbow from the National Science Foundation (MDR-8651737 and MDR-8855625) and an anonymous service agency. Further support was provided by scholarships to Mary Ann Swiatek from Oberlin College and from the Kappa Kappa Gamma Fraternity.Received M.S. in counseling psychology from Iowa State University. Research interests include social and emotional aspects of giftedness, and social coping among gifted adolescents.Received Ed.D. in educational psychology from the Johns Hopkins University. Research focuses upon intellectual talent.  相似文献   
800.
A longitudinal study of 114 women, all having serious problems in intimate relationships, recruited from the community was undertaken in order to investigate relationship and battering status over time. In the original sample (N=193), 97 women were battered and 96 were not battered, as determined by an adaptation of the Conflict Tactics Scale. Of the 114 who returned approximately 2 and 1/2 years later, only 25% of the 51 originally battered women were still in that category. Discriminant function analysis using a combination of variables from established instruments (depression, self-esteem, physical symptoms, self-care agency) and in depth interview (education, relationship control, relationship duration, childhood abuse) failed to distinguish those battered from those not abused at Time 2. Results do not support a learned helplessness model for most women experiencing abuse, and they suggest that battered women seen in the health care and/or social services systems should be supported in a process of healthy decision making about their relationship status.  相似文献   
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