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21.
The social development model (SDM) is a theory of behavior that has proven useful in explaining the etiology of delinquency, violence, and substance use among adolescents as well as early antisocial behavior among pre-adolescents. A further test of the model is its generalizability across population groups. A section of the SDM representing prosocial influences in the etiology of problem behavior was compared for boys and girls and for children from low- and non low-income families using three waves of child, parent and teacher survey data on a sample of 851 elementary school students. Multiple group structural equation modeling was used to assess differences across groups in both measurement of model constructs and hypothesized structural paths between constructs. The results indicate overall similarity in the reliability of measurement models and validity of structural models.  相似文献   
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Criminal justice policies may be enacted, but the actual implementation of those policies depends upon those working on the frontline. Policies that affect how cases are processed in the courtroom can be thwarted by the efforts of courtroom workgroup members. The present study analyzed how courtroom workgroups adjusted to a new juvenile justice policy. Qualitative interviews demonstrated that while there was widespread agreement on the basic tenets of the reform, perceptions of the reform varied by confidence in workgroup membership. Further, the reform inherently increased the workload for some and decreased the workload for others. Those whose workload increased discussed subverting the reform effort in order to continue with business as usual. These findings demonstrated that effective policies must consider the needs of workgroups as adaptation of policies in actual practice depend upon workgroup members' support.  相似文献   
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The fingernail ridge patterns of a pair of identical twins were compared to each other, their parents, and an unrelated subject. The patterns of the twins' nails showed regions of strong similarity but were distinguishable from one another. Fewer similarities were found when comparing the nails to those of the parents and the unrelated control. The twins were shown to be monozygotic by means of DNA profiling. This therefore represents the first demonstration of unique fingernail ridge patterns in subjects shown conclusively to be identical twins. When the fingernail ridge patterns were examined with a scanning electron microscope, the backscattered electron (BEI) images were found to have superior contrast when compared to the secondary electron (SEI) images.  相似文献   
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The author discusses whether a state agent who applies tortureagainst a suspect in order to prevent the death of one or moreinnocent persons can successfully plead a ground for excludinghis or her criminal responsibility under national (in particular,German) law as well as international law. The author examinesthe judgment of a German court, which recently found two policeofficers guilty of threatening to use violence against a suspectedkidnapper, but refrained from punishing them on account of theirmotivation to save the life of the hostage. The author maintainsthat the court's ‘guilty, but not to be punished’verdict could provide guidance for the resolution of comparablecases under international criminal law. He submits that thetension between the absolute ban on torture under internationalhuman rights law and the availability of defences even to crimesof torture under international criminal law should be resolvedthrough a human rights-oriented interpretation of the latter.The author concludes that criminal responsibility for tortureunder international criminal law cannot be excluded by the factthat the torturer acts to save innocent life; however, his orher altruistic motivation may be taken into account in determiningthe sentence.  相似文献   
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Quadratic pieces of fleece measuring 16 mm2 were soaked with 10 different blood-samples in the dilution steps of 1:1, 1:10, 1:100, 1:1000, respectively, and were tested in blood group typing and identification tests of forensic serology. The above spezified dilutions correspond with 5 microliters, 0.5 microliter, 0.05 microliter and 0.005 microliter of blood, respectively. The detection limit of the microspectrometric test for blood was the dilution 1:10, of the porphyrine test a dilution above 1:100, whereas the preliminary test for blood (peroxidase) succeeded always up to a dilution of 1:1000 and the species determination by the radial immunodiffusion test in agar gels succeeded in most cases op to a dilution of 1:1000. The detection limit of the anti-human globulin inhibition test was between the dilution steps 1:10 and 1:100 when non-titrated and undiluted anti-human globulin serum was used. Gc- and ABO-grouping were possible up to a dilution of 1:100 and were thus the most sensitive grouping systems. Phenotyping of the enzyme-systems and the Gm/Km-system usually required stains with considerably higher blood concentrations i.e. stains of undiluted blood.  相似文献   
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Telecommunications regulation has experienced a fundamentalshift from rate regulation to increased reliance on compelledaccess, perhaps best exemplified by the Telecommunications Actof 1996's imposition of no fewer than four new access requirements.Unfortunately, each access requirement is governed by a separateset of rules for determining both the scope and the price ofaccess. The resulting ad hoc regime has created difficult definitionalproblems and opportunities for regulatory arbitrage. In thisarticle we propose a system inspired by the discipline of mathematicsknown as graph theory that integrates all of the different formsof access into a single analytical framework. This system separatesdifferent access regimes into five categories: (1) retail access,(2) wholesale access, (3) interconnection access, (4) platformaccess, and (5) unbundled access. It also provides insightsinto how each type of access complicates the already difficultproblems of network configuration and management and introducesinefficient biases into decisions about network capacity anddesign. The approach we propose also provides insights intothe transaction cost implications of the different types ofaccess. Drawing on the Coasean theory of the firm, our approachexamines the tradeoffs between internal governance costs andthe external transaction costs of providing access to offera theory of network boundaries. This framework shows how accessregulation distorts networks' natural boundaries and providesa basis for evaluating whether private ordering through marketswould lead to more efficient network design.  相似文献   
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