SCAN: A method of community collaboration     

Harriet G. Bennett  Susan Collins  Gordon David Fisher  Sue Evans Hughes  John B. Reinhart 《Child abuse & neglect》1982,6(1):81-85

Recent research has highlighted the complexity of the battered child syndrome. Clinical experience suggests that treatment of troubled families is a long-term process, draining financial resources of agencies and emotional resources of professionals. The need to provide support and case consultation to professionals working in the area of child abuse and neglect evolved in the establishment, in 1968, of the Suspected Child Abuse and Neglect (SCAN) Program at Children's Hospital, Pittsburgh, Pennsylvania. This program provides an effective method of intervention through identification, consultation, referral and follow-up of at-risk families. Weekly meetings offer multi-disciplinary case coordination, treatment recommendations, and a channel of communication for representatives of community agencies. This paper traces the history and present status of the SCAN Program, as well as the role of SCAN as a force for change of community attitudes.  相似文献   

教学中实时磁盘调度策略研究     

雷向东  刘陶 《当代教育论坛》2010,(12)

多媒体服务器需要一个实时磁盘调度算法来为实时流提供同步数据.传统的磁盘调度算法没有考虑磁盘请求的实时性,因此需要对传统的磁盘调度算法SCAN进行改进以使其能够应用于多媒体服务器的磁盘请求.本文提出一个新的实时磁盘调度DBA-SCAN(Dynamic-Bandwidth-Assignment-SCAN)算法,DBA-SCAN算法将实时流分为保证任务和可选任务.只有当一个流中的保证任务被满足时,接纳控制才会接纳这个流.DBA-SCAN采用一种积极策略在运行时动态回收未用的带宽.被回收的带宽被用于为可选任务或者更多的非实时任务服务.通过模拟实验对DBA-SCAN算法和SCAN算法进行对比,实验结果显示,DBA-SCAN明显为实时流提供了更好的质量,同时也大大缩短了非实时任务的响应时间.  相似文献