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141.
Faculty at research universities are evaluated on a number of productivity measures including their ability to conduct research, teach, and engage in service. Research outcomes include publishing research results and acquiring grants and contracts to conduct additional research. While it is assumed that researchers who are awarded grants are more likely to publish research results, there is little research investigating the ways in which grants affect outcomes or how principal investigators differ from researchers who do not hold research grants or those who are co-principal investigators. This research seeks to understand if principal investigators are more or less productive than co-principal investigators and those who do not have grants, and if so, what explains that variation in productivity. It also examines whether women PIs are more or less productive than men PIs. This research uses longitudinal data drawn from an NSF funded survey of academic scientists in Carnegie-designated Research I universities in six fields: biology, chemistry, computer science, earth and atmospheric sciences, electrical engineering, and physics. From this national random sample of men and women scientists and engineers we investigate whether there is variation in the production of outcomes (e.g. publications, teaching, and training graduate students) among PIs, co-PIs, and other researchers. Findings show that productivity and outcomes vary significantly for PIs, co-PIs and by sex. 相似文献
142.
Christine Frederickx Ph.D. François J. Verheggen Ph.D. Yves Brostaux Ph.D. Eric Haubruge Ph.D. 《Journal of forensic sciences》2014,59(2):413-416
Traditional methods of volatile detection used by police typically consist of reliance on canine olfaction. However, dogs have some limitations such as cost of training and time of conditioning. The possibility of using parasitic wasps for detecting explosives and narcotics has been developed. Moreover, wasps are cheap to produce and can be conditioned with impressive speed for a specific chemical detection task. We examined the ability of Nasonia vitripennis Walker to learn and respond to methyldisulfanylmethane (DMDS), a volatile discriminator of cadaver. The training aimed to form an association between an unconditioned stimulus (pupae) and the conditioned stimulus (odor source). After the training, the time spent by conditioned wasps in the DMDS chamber was measured. Statistical analysis showed that the increasing concentrations involved an increase in the time spent in the chamber containing DMDS. This study indicates that N. vitripennis can respond to DMDS, which provide further support for its development as a biological sensor. 相似文献
143.
Purpose
The link between maltreatment and offending has been well established in the literature, with research examining the etiology of criminal behavior consistently documenting the negative effects of experiencing trauma early in life. Theoretically, ideas behind the cycle of violence hypothesis have greatly contributed to our understanding of this connection; however, there is a lack of understanding of the mechanisms underlying this relationship. We address this research gap by examining the mediating role that adolescent mental health, particularly self-image, plays in the relationship between child maltreatment and subsequent adult sex offending.Methods
We utilize retrospective data from a sample of incarcerated sex offenders at a maximum security penitentiary located in Canada (N = 565).Results
Results indicate that poor self-image in adolescence partially mediates the relationship between child maltreatment and the extent of sex offending in adulthood.Conclusions
Implications for research, theory, and policy are discussed. 相似文献144.
Christina Mancini Amy Reckdenwald Eric Beauregard Jill S. Levenson 《Journal of criminal justice》2014
Purpose
Research has examined pornography use on the extent of offending. However, virtually no work has tested whether other sex industry experiences affect sex crime. By extension, the cumulative effect of these exposures is unknown. Social learning theory predicts that exposure should amplify offending. Separately, the developmental perspective highlights that the timing of exposure matters.Methods
Drawing on retrospective longitudinal data, we first test whether exposure during adolescence is associated with a younger age of onset; we also examine whether adulthood exposure is linked with greater frequency of offending.Results
Findings indicate that most types of adolescent exposures as well as total exposures were related to an earlier age of onset. Exposure during adulthood was also associated with an overall increase in sex offending, but effects were dependent on “type.”Conclusion
There are nuances in the effect of sex industry exposure on offending patterns. Implications of results are discussed. 相似文献145.
Purpose
Using the rational choice perspective, the current study investigates the impact that the environment and offending behavior have on serial sexual crime event outcomes.Methods
The effects of time and place factors, as well as offender modus operandi strategies, on sexual crime event outcomes are tested using Generalized Estimating Equations on a sample of 361 crime events committed by 72 serial sex offenders.Results
Time and place do impact serial stranger sexual offenders’ modus operandi strategies, but the place characteristics of the crime have more of an effect on the offender’s behavior than do the temporal conditions during which the event occurs. Subsequent analyses indicate that temporal and place factors, as well as offender modus operandi strategies, predict whether the offender completes the rape, his reaction to victim resistance, and the level of physical force that he inflicts on the victim, but not whether the victim is forced to commit sexual acts on the offender.Conclusions
Serial stranger sexual offenders are effective decision-makers who adapt their strategies to the physical environment in which they commit their crimes, but their degree of rationality can vary as some outcomes are more dependent on the context than the offender and his actions. 相似文献146.
Eric L. Piza Joel M. Caplan Leslie W. Kennedy 《Journal of Quantitative Criminology》2014,30(2):237-264
Objectives
Despite the popularity of closed circuit television (CCTV), evidence of its crime prevention capabilities is inconclusive. Research has largely reported CCTV effect as “mixed” without explaining this variance. The current study contributes to the literature by testing the influence of several micro-level factors on changes in crime levels within CCTV areas of Newark, NJ.Methods
Viewsheds, denoting the line-of-sight of CCTV cameras, were units of analysis (N = 117). Location quotients, controlling for viewshed size and control-area crime incidence, measured changes in the levels of six crime categories, from the pre-installation period to the post-installation period. Ordinary least squares regression models tested the influence of specific micro-level factors—environmental features, camera line-of-sight, enforcement activity, and camera design—on each crime category.Results
First, the influence of environmental features differed across crime categories, with specific environs being related to the reduction of certain crimes and the increase of others. Second, CCTV-generated enforcement was related to the reduction of overall crime, violent crime and theft-from-auto. Third, obstructions to CCTV line-of-sight caused by immovable objects were related to increased levels of auto theft and decreased levels of violent crime, theft from auto and robbery.Conclusions
The findings suggest that CCTV operations should be designed in a manner that heightens their deterrent effect. Specifically, police should account for the presence of crime generators/attractors and ground-level obstructions when selecting camera sites, and design the operational strategy in a manner that generates maximum levels of enforcement. 相似文献147.
148.
The tension between bureaucratic and democratic values has characterized significant debates in the field of public administration. In this article, we ask, does public managers' confidence in their organizational administrative capacity affect citizen participation? Using managerial confidence in organizational response capacity (ORC) during crises as a vehicle to investigate the tension between democratic and administrative values, we examine whether an administration-centric approach to management influences citizen participation. We posit that higher levels of managerial confidence in organizational administrative capacity can lessen the pressure from political stakeholders which, in turn, might allow managers the autonomy to isolate themselves from the general public. The empirical analysis uses a structural equation model (SEM) to examine survey data from senior managers in 500 US cities. We find that managerial confidence in ORC reduces citizen participation, but only indirectly through diminishing influence from other governmental actors or by allowing managers to win the trust of political principals. 相似文献
149.
The sharp increase in suppport for the North American Free Trade Agreement (NAFTA) poses a challenge to many of our conceptions of public opinion. Most large shifts in public opinion follow major events. Based on models estimated from the September to November NBC News/
Wall Street Journal
surveys, I show this was not the case with respect to public opinion on NAFTA. Instead, the increase in support for the pact reflected a slower response to a public debate over the merits of free trade versus protectionism. As the debate proceeded, large segments of the public— including the least interested—developed more highly constrained belief systems. By the end of the public discourse, the most and least interested citizens both linked attitudes on the merits of trade to their positions on NAFTA and to their evaluations of the elites on each side of the issue. People made up their minds on NAFTA on the basis of arguments about trade, not about their own self-interest. The NAFTA case suggests that there may be a rational public at the individual level after all, even among people who may not usually be interested in public affairs. 相似文献
150.