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61.
62.
Hall JA Sarrazin MS Huber DL Vaughn T Block RI Reedy AR Jang M 《Research on social work practice》2009,19(4):407-422
OBJECTIVE: The purpose of this research was to evaluate the effectiveness of a comprehensive, strengths-based model of case management for clients in drug abuse treatment. METHOD: 503 volunteers from residential or intensive outpatient treatment were randomly assigned to one of three conditions of Iowa Case Management (ICM) plus treatment as usual (TAU), or to a fourth condition of TAU only. All were assessed at intake and followed at 3, 6, and 12 months. RESULTS: Clients in all four conditions significantly decreased substance use by 3 months after intake and maintained most gains over time. However, the addition of ICM to TAU did not improve substance use outcomes. CONCLUSION: Overall, the addition of case management did not significantly improve drug treatment as hypothesized by both researchers and clinicians. Some results were mixed, possibly due to the heterogeneous sample, wide range of case management activities, or difficulty retaining participants over time. 相似文献
63.
Tail Behavior of the Failure Rate Functions of Mixtures 总被引:2,自引:0,他引:2
The tail behavior of the failure rate of mixtures of lifetime distributions is studied. A typical result is that if the failure
rate of the strongest component of the mixture decreases to a limit, then the failure rate of the mixture decreases to the
same limit. For a class of distributions containing the gamma distributions this result can be improved in the sense that
the behavior of the failure rate of the mixture asymptotically mirrors that of the strongest component in whether it decreases
or increases to a limit.
This revised version was published online in July 2006 with corrections to the Cover Date. 相似文献
64.
Walter Block 《International Journal of Value-Based Management》1997,10(3):221-235
If advocates of bans on tobacco advertising had their complete way, most would prohibit this product outright. But this is
not (yet) politically feasible. Instead, they have focussed their efforts on restricting information flows about this product.
They rely on the doctrine that free speech rights apply only indirectly, if at all, to such matters of commerce. In this paper
several arguments in behalf of bans on tobacco advertising are considered, and all are found invalid.
This revised version was published online in August 2006 with corrections to the Cover Date. 相似文献
65.
As dynamic collaborations between networks of specialists have become more central to developing cutting-edge innovations, designing and sustaining innovation policies that foster them has become an increasingly central concern. This article reviews the characteristics of the “developmental network” or “neo-developmental” states that have been shown to foster innovations at the technological horizon. It then analyzes the US case to suggest why some developmental network approaches to governance have proven relatively durable, while others have not. We conclude with a discussion of what can – and cannot – be learned from the US case, and suggest the importance of comparative work on the sustainability of effective innovation-centered approaches to governance. 相似文献