排序方式: 共有4条查询结果,搜索用时 250 毫秒
1
1.
Child protective services (CPS) case records of 639 children placed in out-of-home care due to maltreatment were reviewed, and substance abuse by the child's caregiver prior to the child's placement was evaluated systematically. Based on several different sources of information, 79% of the caregivers were found to meet the criteria for caregiver substance abuse (CSA). Children with and without evidence of CSA differed on age, ethnicity, family composition, and type of maltreatment. The importance of operational specificity in defining CSA and implications for policy and service delivery are discussed. 相似文献
2.
This paper describes a model which may be used in the evaluation of the relative effectiveness of policies used in the areas of ship chartering and the switching of combined carriers between the dry cargo market and the tanker market. The policies for chartering and market switching are expressed in the form of ‘desired proportions’ of the fleet operating in a particular charter-mode or a particular market. Graphical illustration of this form of expression of policies can be easily understood, so that alternative policies can be designed with relative ease. The effectiveness of a particular form of policy under various freight market conditions can be determined from the model, the use of which is illustrated by its application to the deployment of the fleet of an hypothetical shipping company. It is assumed that the feedback connection between the company's actions and the marketplace is negligible. 相似文献
3.
The influence of disabilities on placement outcomes was examined for 277 children who were removed from their biological parents due to substantiated maltreatment. Results indicated that children with a disability were less likely to reunify and more likely to reside in nonkin foster care two years later than typical children. Children with cognitive, emotional /behavioral, and physical disabilities were over four times more likely to be permanently living in nonkin foster care than to be reunified. 相似文献
4.
The problem considered is that of choosing batch quantities to minimize costs, subject to the constraints that neither overall set-up costs nor overall set-up time can be increased beyond certain limits. Theoretical and graphical solutions are obtained for two possible formulations of the problem, and a simple practical procedure is suggested. 相似文献
1