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Many widely publicized arrangements bearing the popular "public–private partnership" label are complex, long-term contracts between municipalities and private companies. In theory, these innovative contracts offer substantial public benefits, including improved service quality, risk sharing with the private sector, and cost savings. In practice, however, the challenges that long-term contracts pose can undermine their successful implementation at the local level. Drawing on illustrative cases, this article explores some practical impediments to achieving market-driven competition, equitable risk sharing, effective performance guarantees, and appropriate transparency in innovative long-term contracts. It examines the inapplicability of the partnership model to most commercial transactions between government and business, the risks of uncontrollable circumstances, the impact of local resource constraints, and barriers to transparency in long-term contracts. It concludes that local governments embarking on long-term contracts must invest in specialized expertise, effective contract management, and strong governance structures.  相似文献   
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Most of the literature on international dispute resolution emphasizes timing and ripeness when considering whether or not a dispute is suitable for mediation. In addition to this focus, the authors believe analysts should consider whether a particular mediator is ready for prime time. Their framework posits that one may gauge the appropriateness of a mediator for a particular dispute along three different types of considerations: operational and political; strategic and diplomatic; and relationship and cultural fit. They provide numerous case examples illustrating how the choice of a mediator might apply in each dimension.  相似文献   
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The DNA industry     
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Although research on dating violence is growing, little is known about the distinct developmental trajectories of dating violence during adolescence. The current study identifies trajectories of physical dating violence victimization and perpetration that boys and girls follow from sixth to twelfth grade, examines the overlap of these trajectories, and characterizes them by perceptions of a caring dating relationship and acceptability of dating aggression. The sample consisted of randomly selected sixth graders from nine schools in Northeast Georgia (n = 588; 52 % boys; 49 % White, 36 % African American, 12 % Latino) who completed yearly surveys from Grades 6–12. We used latent class mixture modeling to identify the trajectories and generalized estimating equations models to examine the acceptability of dating aggression by dating violence trajectories. Participants followed two trajectories of dating violence victimization (boys: low and high; girls: low and increasing) and two of perpetration (boys and girls: low and increasing). When examining the joint trajectories of victimization and perpetration, a similar proportion of boys (62 %) and girls (65 %) were in the low victimization and low perpetration group and reported the lowest acceptance of dating aggression. The same proportion of boys and girls (27 %) were in the high/increasing victimization and perpetration group, and reported the highest acceptance of dating aggression. However, acceptance of dating aggression decreased from Grade 6–12 for all groups, even for those whose trajectory of dating violence increased. Victimization and perpetration were associated with reporting a less caring dating relationship. Results highlight the importance of focusing prevention efforts early for adolescents who follow this increasing probability of physical dating violence.  相似文献   
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To date, little research has documented how teens might misuse technology to harass, control, and abuse their dating partners. This study examined the extent of cyber dating abuse—abuse via technology and new media—in youth relationships and how it relates to other forms of teen dating violence. A total of 5,647 youth from ten schools in three northeastern states participated in the survey, of which 3,745 reported currently being in a dating relationship or having been in one during the prior year (52 % were female; 74 % White). Just over a quarter of youth in a current or recent relationship said that they experienced some form of cyber dating abuse victimization in the prior year, with females reporting more cyber dating abuse victimization than males (particularly sexual cyber dating abuse). One out of ten youth said that they had perpetrated cyber dating abuse, with females reporting greater levels of non-sexual cyber dating abuse perpetration than males; by contrast, male youth were significantly more likely to report perpetrating sexual cyber dating abuse. Victims of sexual cyber dating abuse were seven times more likely to have also experienced sexual coercion (55 vs. 8 %) than were non-victims, and perpetrators of sexual cyber dating abuse were 17 times more likely to have also perpetrated sexual coercion (34 vs. 2 %) than were non-perpetrators. Implications for practice and future research are discussed.  相似文献   
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