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401.
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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   
403.
Because states have primary responsibility for the implementation of public health insurance programs, states need timely, good quality data to evaluate programs, monitor trends in the number and characteristics of the uninsured, and better understand the dynamics of health insurance coverage. This article provides a synthesis of the data sources available to states for monitoring rates of health insurance coverage. Information was collected through a comprehensive review of state and national health surveys and in-depth interviews with state analysts in all fifty states. Our findings suggest that national surveys do not meet states' needs for data, and in response, states have initiated their own household surveys. We provide information on thirty-six household surveys that are used to estimate state levels of health insurance coverage. We recommend that national and state efforts be better coordinated to facilitate efficient use of resources to achieve good state-level date.  相似文献   
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This article examines the relationship between self-designated political ideology, opinions on twenty-one issues, and campaign activity at local, state, and national levels. The samples examined include delegates to the 1984 Party Conventions in eleven states. Generally, the findings indicate that ideology and issue position are most strongly associated with activity in national campaigns. Among Democrats liberalism is associated with national activity, whereas among Republicans those who are conservative are most active in national campaigns. Some important intraparty differences are found between local campaign activists and national activists. For example, among Democrats local campaign activists are much more conservative than national activists on several issues.  相似文献   
406.
This paper examines the industrial organization of the federal sector by measuring the variation of bureau market shares of appropriations. The two measures employed are rank-shift analysis (turnover) and the Hymer-Pashigian index of market share instability which have been used to indicate the level of competitiveness within private sector industries. The results of both the rank-shift and market share instability analyses strongly suggest that there is considerable competition among bureaus within the federal sector. These results are consistent with the hypothesis and existing evidence that bureaus engage in nonprice competitive strategies.  相似文献   
407.
Fifty-seven parents, usually mothers, rated their adolescent sons and daughters on the Walker Checklist at the time of their initial clinic appointment. Parents perceived this group of adolescents as more disturbed than the elementary school age normative group on three of the scales, Immaturity, Acting Out, and Distractibility. The results support an increase in behavior problems at adolescence which is more marked for the younger females and younger males. Neither gender nor age, separately, determines the degree of behavioral disturbance, with one exception. The scores of both the younger and older male groups are significantly higher than the scores of their corresponding female groups on the school-related Distractibility scale.Received her Ph.D. from University of Washington 1959. Interests are adolescent development, personality, and evaluative research.Community Practice student in the Adolescent Clinic.  相似文献   
408.
Findings from an exploratory study of 48 children sexually abused in daycare centers and daycare homes are presented. About two thirds were female and one third male. Approximately half of victims were maltreated by a single perpetrator and about half by more than one perpetrator, in the latter instance almost always by both men and women. On average, the children were subjected to 5.3 types of sexual abuse, experienced 2.1 different sorts of threats to obtain their cooperation or prevent disclosure of their victimization, and suffered from 3.7 symptoms regarded as sequelae of sexual abuse. Differences in the characteristics of offenders, victims, the sexual abuse, threats, and sequelae were found based upon the daycare context, that is, whether children were victimized in a center with multiple perpetrators, a center with a single perpetrator, or a daycare home.  相似文献   
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This article reviews recent findings in the developmental neurophysiology of children subjected to psychological trauma. Studies link extreme neglect and abuse with long-term changes in the nervous and endocrine systems. A growing body of research literature indicates that individuals with severe trauma histories are at higher risk of behaving violently than those without such histories. This article links these two research areas by discussing how severe and protracted child abuse and/or neglect can lead to biological changes, putting these individuals at greater risk for committing homicide and other forms of violence than those without child maltreatment histories. The implications of these biological findings for forensic evaluations are discussed. Based on new understanding of the effects of child maltreatment, the authors invite law and mental health professionals to rethink their notions of justice and offender accountability, and they challenge policymakers to allocate funds for research into effective treatment and for service delivery.  相似文献   
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