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This paper attempts to explore recent efforts of American state legislatures to improve the quality of public schools. Which state legislatures have passed school reform legislation? At what aspects of public education is this reform legislation aimed? Are there significant variations across states in such reform legislation? What has contributed most to the passage of such legislation? Is it the socioeconomic characteristics of individual states or the structural and procedural characteristics of their legislative branch that better explain school reform legislation? Analysis of data from the 50 states reveals greater variation in legislative results that reform public schools. The regional locus of most reform was the south. Most importantly, school reform legislation was found to be influenced by the interaction of a multitude of divergent forces. This finding suggests that researchers interested in the determinants of legislative action must move beyond analysis of whether economic or political forces shape legislative outcomes to inquire how economic, political and other forces interact when a given reform effort reaches the legislative halls of the states. 相似文献
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美国地方政府实行高度自治的政治制度,这是美国联邦制政治体制的重要组成部分.这种体制的形成经历了漫长的发展和演变过程.美国地方政府自治要受到联邦宪法和法律、州宪法和法律的控制.州与地方政府之间的关系受到狄伦原则的影响,该原则在不同历史时期和不同的州有不同的理解.这些共同构成美国特色的地方自治政治和法律制度. 相似文献
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Depending upon specific situations, some victims of sexual assault provide vaginal samples more than 36-48 h after the incident. We have tested the ability of commercial and in-house Y-STR systems to provide DNA profiles from extended interval (> or =3 days) postcoital samples. The commercial Y-STR systems tested included the AmpFlSTR Yfiler (Applied Biosystems), PowerPlex Y (Promega) and Y-PLEX 12 (Reliagene) products whereas the in-house systems comprised Multiplex I (MPI) and Multiplex B (MPB). Three donor couples were recruited for the study. Postcoital cervicovaginal swabs (x2) were recovered by each of the three females at specified intervals after sexual intercourse (3-7 days). Each time point sample was collected after a separate act of sexual intercourse and was preceded by a 7-day abstention period. As a negative control, a precoital swab was also recovered prior to coitus for each sampling and only data from postcoital samples that demonstrated a lack of male DNA in the associated precoital sample was used. A number of DNA profile enhancement strategies were employed including sampling by cervical brushing, nondifferential DNA extraction methodology, and post-PCR purification. Full Y-STR profiles from cervicovaginal samples recovered 3-4 days after intercourse were routinely obtained. Profiles were also obtainable 5-6 days postcoitus although by this stage partial profiles rather than full profiles were a more likely outcome. The DNA profiles from the sperm fraction of a differential lysis were superior to that obtained when a nondifferential method was employed in that the allelic signal intensities were generally higher and more balanced and exhibited less baseline noise. The incorporation of a simple post-PCR purification process significantly increased the ability to obtain Y-STR profiles, particularly from 5- to 6-day postcoital samples. Remarkably an 8 locus Y-STR profile was obtained from a 7-day postcoital sample, which is approaching the reported time limit for sperm detection in the cervix. 相似文献
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David Terburg Barak Morgan Jack van Honk 《International journal of law and psychiatry》2009,32(4):216-223
Social aggression is an escalating hazard for individuals and society. It is most frequently observed as impulsive–reactive aggression in antisocial personality disorder (APD), but in psychopathic aggressive personalities instrumental social aggression is more prominent. However, the psychobiological mechanisms underlying human social aggression are still poorly understood. Here we propose a psychobiological mechanism that may explain human social aggression wherein the steroid hormones cortisol and testosterone play a critical role. High levels of testosterone and low levels of cortisol have been associated with social aggression in several species but it seems that in those individuals wherein these hormonal markers combine social aggression is most violent. In this review we discuss fundamental and clinical research which underscores the potential of the testosterone–cortisol ratio as a possible marker for criminal aggressive tendencies. 相似文献