加权Bergman 空间到Bloch型空间的广义Cesàro算子

给定单位球B上的解析函数g,刻划了从加权Bergman空间到Bloch型空间及小Bloch型空间的广义Cesàro算子Lg的有界性和紧性特征.此处Lg定义为Lgf(z) =∫10g(tz)f(tz)dt/t.     

Extended teams in vocational education: collaboration on the border

ABSTRACT

Extended Teams (ETs), in which teachers and workplace supervisors are jointly responsible for the quality of education, were established to solve problems concerning school–workplace connections in vocational and professional education. Six ETs were investigated during their 1st year of collaboration. In addition to recordings of ET meetings, questionnaires, focus groups, and interviews yielded triangulation of data pertaining to dimensions of team work and professional growth of individual team members. Five of the 6 teams showed marked changes for team functioning, especially with regard to social ties and intellectual building as well as needs for new knowledge. Analysis of individual professional growth indicated that working in an ET contributed to understanding the other context, and altering views of what can be achieved by and for students. We conclude that ETs hold potential for strengthening school–workplace connections, but note that they did rely heavily on external support.     

限定延伸职能,强化核心职能——斯密动力视角下国家职能的调整

改革的深入不能简单等同于国家职能的退出。国家具有产权界定、保障与契约实施的核心职能,降低交易费用;通过权力重新分配资源直接获取收入的延伸职能,增加交易费用。延伸职能是支持核心职能履行的基础,一旦膨胀就会危害"斯密动力"的扩展。改革的目标是一种结构性变革,限定国家的延伸职能,提升履行核心职能的国家能力。改革的深化不应盲从于"小政府"抽象理念,应以"强政府"为标杆,果断从延伸职能退出。     

三网融合环境下图书馆服务延伸方式

三网融合为图书馆进一步延伸服务方式奠定了现实基础。如何抓住三网融合机遇,创新服务方式,成为图书馆服务领域的新课题。文章为了探索三网融合环境下延伸服务的现实基础和面临的挑战,从网络平台资源融合、跨媒体流通服务、融合平台下的参考咨询服务、个性化服务拓展和开展其他公共文化服务等方面提出了新环境下图书馆服务延伸的设想。     

从Bergman空间到Dirichlet空间的广义Cesàro算子

对α,β〉-1,0〈p,q〈∞和Cn中单位球上的全纯函数g,刻画了Bergman空间到Dirichlet空间的广义Cesàro算子Tg的有界性和紧性。此外,还讨论了Tg的本性模。     

生产者责任延伸制度研究

生产者责任延伸(EPR)制度是关于废弃物管理的重要制度之一,它将生产者的产品责任延伸到产品生命周期后的废物处理阶段,这对于促进循环经济的实现、保障个人和公众环境权益具有十分重要的意义。环境管理理念的转变是建立生产者责任延伸制度的前提,产品生命周期理论是建立生产者责任延伸制度的基础。我国《循环经济促进法》明确规定了生产者责任延伸制度,但还存在诸多疏漏,所以,应借鉴国外立法经验,明确实施主体和责任分担,建立监督机制,健全诉讼制度,尽快使我国的生产者责任延伸制度走向完善。     

Mysteries in the Night: An Exploratory Study of Student Use and Perceptions of 24/5 Hours

The Oregon State University Valley Library has been open 24 hours per day, five days per week, during regular academic terms since 2010. The authors collected survey data during 2012 to explore how students used the hours and whether they perceived that the provision of 24/5 hours contributes to their academic success. Nearly 90% of the respondents believed that their use of the overnight hours made a difference in their performance. The demographic, usage, and perception of value data collected provide a useful snapshot of overnight usage in this exploratory study.     

Old Problem for New Reasons

Summary

Evening staff members of the Research and Information Services Department (RISD) at the North Carolina State University (NCSU) Libraries have recently noticed an apparent increase in the use of the library by people perceived to be mentally ill. RISD staff members have found themselves in some ways unpreparedtorespond comfortably to this change. This paper, a case study, proposes reasons for this increased visibility of mentally ill people, and describes the challenges the staff members faced and how they overcame them. The RISD staff members acquired the knowledge and confidence they need to work with mentally ill people through communication among colleagues, review of the literature, and staff training.     

添加约束的EKF-SLAM算法

为了得到较高的估计精度,基于扩展卡尔曼滤波的同时定位与地图生成算法(EKF-SLAM)需要完成多次路径闭合.这不仅消耗大量的时间与能量,而且增大了机器人发生故障的概率.本文提出一种添加约束的EKF-SLAM算法.该算法通过分析协方差矩阵确定目标路标对,用测量信息与全局先验方向对原估计结果进行约束,能够极大改善估计效果,兼顾高效率与高精度.实验结果及其分析充分表明了算法的有效性.     

在调和映射空间上的Dressing作用

得到Dressing作用的一些性质,证明标准的nuniton扩张解在Dressing作用下仍然是标准的n uniton扩张解,因而Dressing作用保持有限调和映射的极小uniton数不变 (后面的结论已被Guest和Ohnita证明)。特别证明对于全纯映射,Dressing作用仅与群元素在零点值有关。此性质表明Loop群在全纯映射上的作用与复线性群在复Grassman nians上的标准作用是等价的。