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901.
A gas chromatographic (GC) fingerprint method, based on the presence or absence of six congeners, was developed for illicit cocaine samples. The fingerprint utilizes the relative abundances of these congeners towards each other, disregarding cocaine as the main constituent, and can be expressed numerically or graphically in the form of pictograms for rapid visual comparison. The method can be applied directly to a solution of the sample in chloroform, without previous workup procedures. More than 70 unrelated samples were analyzed and a great variation was observed in the parameter composition. On the other hand, a remarkable similarity could be seen between related samples. The GC fingerprint method may be considered an important contribution for sample comparison, as is exemplified by a subdivision of the analyzed samples in different categories, based on the number and types of congeners found. 相似文献
902.
Cheryl Gore-Felton Seth C. Kalichman Michael J. Brondino Eric G. Benotsch Marjorie Cage Kari DiFonzo 《Journal of family violence》2006,21(4):263-270
Childhood sexual abuse has been associated with HIV transmission risk behavior in men who have sex with men. This study examined an adapted model that was originally developed to explain the relationship between childhood sexual abuse and HIV risk behavior among women in a sample of men who have sex with men. Men attending a large gay pride event (n=647) completed anonymous surveys that assessed demographic characteristics, childhood sexual abuse, symptoms of dissociation, trauma-related anxiety, borderline personality characteristics, hopelessness, substance use, and sexual risk behavior. A latent variable partial least squares analysis was conducted to test the interrelationships between childhood sexual abuse, exchanging sex for money or drugs, emotional disturbances, drug use, substance use in the context of sexual behavior, and sexual risk behavior. The model fit the data well and accounted for 10% of the total variance in sexual risk behavior. History of childhood sexual abuse predicted exchanging sex for money or drugs and this relationship was partly accounted for by active drug use. Substance use proximal to sexual behavior also emerged as a key factor in predicting sexual risk behavior. Findings from this study, therefore, indicate a direct association between history of child sexual abuse and high risk for HIV infection related to engaging in sex trade. 相似文献
903.
Incarceration rates in the United States dramatically increased over the past several decades. This trend has drawn significant academic attention to prison overcrowding and its potential effect on inmate misconduct. The empirical relationship between inmate misconduct and overcrowding, however, is less than clear. To be sure, studies indicating positive, negative, and null relationships can all be found in the literature. The current research subjects this body of literature to a meta-analysis in an effort to: (1) clarify the direction and strength of the relationship between overcrowding and rates of prison misconduct across all studies, and (2) to uncover the degree to which variation in research outcomes can be attributed to methodological differences across studies. Results indicate that prison crowding has little substantive impact on inmate misconduct. Implications of the findings are discussed in detail. 相似文献
904.
DAVID WEISBURD LAURA A. WYCKOFF JUSTIN READY JOHN E. ECK JOSHUA C. HINKLE FRANK GAJEWSKI 《犯罪学》2006,44(3):549-592
Recent studies point to the potential theoretical and practical benefits of focusing police resources on crime hot spots. However, many scholars have noted that such approaches risk displacing crime or disorder to other places where programs are not in place. Although much attention has been paid to the idea of displacement, methodological problems associated with measuring it have often been overlooked. We try to fill these gaps in measurement and understanding of displacement and the related phenomenon of diffusion of crime control benefits. Our main focus is on immediate spatial displacement or diffusion of crime to areas near the targeted sites of an intervention. Do focused crime prevention efforts at places simply result in a movement of offenders to areas nearby targeted sites—“do they simply move crime around the corner”? Or, conversely, will a crime prevention effort focusing on specific places lead to improvement in areas nearby—what has come to be termed a diffusion of crime control benefits? Our data are drawn from a controlled study of displacement and diffusion in Jersey City, New Jersey. Two sites with substantial street‐level crime and disorder were targeted and carefully monitored during an experimental period. Two neighboring areas were selected as “catchment areas” from which to assess immediate spatial displacement or diffusion. Intensive police interventions were applied to each target site but not to the catchment areas. More than 6,000 20‐minute social observations were conducted in the target and catchment areas. They were supplemented by interviews and ethnographic field observations. Our findings indicate that, at least for crime markets involving drugs and prostitution, crime does not simply move around the corner. Indeed, this study supports the position that the most likely outcome of such focused crime prevention efforts is a diffusion of crime control benefits to nearby areas. 相似文献
905.
906.
Linda C. McClain 《Family Court Review》2006,44(2):200-208
The debate over legalizing same‐sex marriage implicates the question of whether doing so would signal the end—or destruction—of the institution of marriage. The appeal to preserving a millennia‐old tradition of marriage against change fails to reckon with the evolution that has already occurred. Invocations of gender complementarity between parents as essential to child well‐being also conflict with growing recognition in family law that children's best interests can be served by gay and lesbian parents. Canada's path toward same‐sex marriage suggests that impasse need not be inevitable. In the United States, this impasse stems in part from the problem that same‐sex marriage serves as an emblem of everything that threatens marriage. 相似文献
907.
The aim of this study was to determine whether polyurethane (PU) foam fragments from different sources could be discriminated from each other. Low and high power microscopy was used to determine whether or not foam fragments were distinguishable from each other under various lighting conditions. Once similar foam fragments were declared microscopically indistinguishable, the visible range microspectrophotometer was highly competent in further distinguishing the spectral characteristics in various fragments from each other. Foam fragments from the same source were shown to display no microscopical or chemical variation. Conversely, it was possible to make clear distinctions between foam fragments from different sources. 相似文献
908.
909.
A synoptic study of six cases of self-inflicted sharp force injuries is presented, where young, mostly female people had simulated assaults to gain sympathy or other personal advantage. The morphological distinctives of simulated assault wounds from such of real assault are worked out and the common situative and motivative background is cleared up. 相似文献
910.
Historically, disease scares reveal contradictions in the social order. We postulate that courts focus on depoliticizing social tensions revealed by AIDS, legitimating the routines of dominant parties in the AIDS sociolegal network. At the same time, courts deviate from their normal practices try upholding the claims of subordinate parties in this network, particularly people living with AIDS (PWAs) and their allies. Our analysis of 36 AlDS-related court rulings, published during the formative years of AIDS litigation in the United States, supports the notion that courts operate as "double-edged" institutions. To explain the duality of judicial decision making, we concentrate on the powers of social and cultural factors rather than on the doctrinal judgments of the courts. We trace how relational attributes, evident in contestants' characteristics (e.g., plaintiff/defendant, status differentials) and the nature of claims (i.e., restrictive/expansive), combine to account for wins for dominant parties and how other combinations of these attributes define wins for subordinate parties. We also show how judges combine specific interpretational attributes in the text of their rulings (e.g., use of divisive AIDS metaphors, deference to medical authority) to justify wins. We consolidate these findings to discuss how PWAs and their allies might use the courts to their advantage and point out the ways in which the changing epidemiology of AIDS in the United States limits the use of courts. 相似文献