现阶段农村初中新课程实施情况调查

通过对100多位农村初中校长就新课程培训、对新课改的认识、教学行为的改变、综合实践活动的开展、评价和考试改革等方面进行的调查,发现课程改革给农村初中带来了一些积极的变化,但也存在许多有待解决的问题,进而分析这些问题存在的原因,并提出了相应的改革建议。     

基于模仿者动力学模型的外在制度实施过程研究

外在制度在大群体组织中的实施是个复杂的过程.这一过程中,组织成员的理性程度较低而且行为相似,较适合用对称的模仿者动力学模型来分析.外在制度虽具有一定的自实施功能,但实施过程中实施者的主动性和创造性也很重要.借助于模型和案例分析,实施者可在现实中通过适当操作来控制实施环境,增强外在制度的实施效果.     

社会信任、法律环境与企业社会责任绩效

社会信任作为一种重要的非正式制度,对企业履行社会责任的行为具有深远影响。以2010—2019年沪深A股上市公司为样本,检验了社会信任对企业社会责任绩效的影响。研究结果表明:社会信任水平越高的地区,企业的社会责任绩效越好;这种促进作用在法律环境相对不完善的地区更为显著。进一步研究发现,社会信任还有效提高了企业社会责任的信息披露质量,并显著改善了企业履行社会责任效率。上述研究结果表明,社会信任作为一种重要的非正式制度,对促进企业社会责任履行产生了积极影响,并能弥补诸如法律环境等的不足来提升社会责任绩效。因此,监管部门在不断完善法律环境的同时,也应关注地区社会信任等非正式制度对企业社会责任履行的促进作用,提升企业社会责任绩效。     

Sample selection in radiocarbon dating

Archaeologists working on the island of O'ahu, Hawai'i, use radiocarbon dating of samples of organic matter found trapped in fish-pond sediments to help them to learn about the chronology of the construction and use of the aquicultural systems created by the Polynesians. At one particular site, Loko Kuwili, 25 organic samples were obtained and funds were available to date an initial nine. However, on calibration to the calendar scale, the radiocarbon determinations provided date estimates that had very large variances. As a result, major issues of chronology remained unresolved and the archaeologists were faced with the prospect of another expensive programme of radiocarbon dating. This paper presents results of research that tackles the problems associated with selecting samples from those which are still available. Building on considerable recent research that utilizes Markov chain Monte Carlo methods to aid archaeologists in their radiocarbon calibration and interpretation, we adopt the standard Bayesian framework of risk functions, which allows us to assess the optimal samples to be sent for dating. Although rather computer intensive, our algorithms are simple to implement within the Bayesian radiocarbon framework that is already in place and produce results that are capable of direct interpretation by the archaeologists. By dating just three more samples from Loko Kuwili the expected variance on the date of greatest interest could be substantially reduced.     

One-dimensional optimal bounded-shape partitions for Schur convex sum objective functions

Consider the problem of partitioning n nonnegative numbers into p parts, where part i can be assigned n_i numbers with n_i lying in a given range. The goal is to maximize a Schur convex function F whose ith argument is the sum of numbers assigned to part i. The shape of a partition is the vector consisting of the sizes of its parts, further, a shape (without referring to a particular partition) is a vector of nonnegative integers (n₁,..., n_p) which sum to n. A partition is called size-consecutive if there is a ranking of the parts which is consistent with their sizes, and all elements in a higher-ranked part exceed all elements in the lower-ranked part. We demonstrate that one can restrict attention to size-consecutive partitions with shapes that are nonmajorized, we study these shapes, bound their numbers and develop algorithms to enumerate them. Our study extends the analysis of a previous paper by Hwang and Rothblum which discussed the above problem assuming the existence of a majorizing shape. This research is partially supported by ROC National Science grant NSC 92-2115-M-009-014.     

台湾地区家庭教育政策法规制订实施特点及其对大陆的启示

台湾是目前世界上唯一通过正式颁布“家庭教育法”来推动家庭教育事业发展的地区。台湾地区家庭教育政策法规的制订实施对大陆地区具有重要的借鉴意义。台湾地区家庭教育政策法规的制订体系完整,并经过多次修订。台湾地区家庭教育政策法规有稳定的实施机构,有力的经费支持,整合的政府资源以及配套的活动课程。大陆地区应加快家庭教育法治化进程,成立家庭教育立法小组,立体化家庭教育服务网络,建立家庭教育经费保障机制,配套有地方特色的活动课程并重视培养家庭教育专业人才。     

Layouts for ocean wave energy farms: Models,properties, and optimization

Renewable energy, such as wave energy, plays a significant role in sustainable energy development. Wave energy represents a large untapped source of energy worldwide and potentially offers a vast source of sustainable energy. We present models and a heuristic algorithm for choosing optimal locations of wave energy conversion (WEC) devices within an array, or wave farm. The location problem can have a significant impact on the total power of the farm due to the interactions among the incident ocean waves and the scattered and radiated waves produced by the WECs. Depending on the nature of the interference (constructive or destructive) among these waves, the wave energy entering multiple devices, and thus the power output of the farm, may be significantly larger or smaller than the energy that would be seen if the devices were operating in isolation. Our algorithm chooses WEC locations to maximize the performance of a wave farm as measured by a well known performance measure called the q-factor, which is the ratio of the power from an array of N WECs to the power from N WECs operating independently, under the point absorber approximation. We prove an analytical optimal solution for the 2-WEC problem and, based on the properties of the 2-WEC solution, we propose an iterative heuristic optimization algorithm for the general problem.     

校企合作构建第二课堂的实施效果分析及评价——基于圣奥班(家具设计专业)毕业生跟踪问卷的调查

南京林业大学与浙江圣奥(木业)集团联合创建的“圣奥班”是校企合作联合培养创新型家具设计工程专业人才的成功平台之一.基于圣奥班毕业生的问卷调查,对学生进班动机与目标定位、比较优势、获得的帮助、专业能力提升,以及今后办班建议等方面内容进行了分析.统计结果表明,学校和企业共同搭建的圣奥班平台对学生创新意识,专业能力、就业竞争力等诸多方面都有显著的提升.     

HR systems and leadership attachment affecting idea generation and implementation: An experiment and two-source multi-level study

This paper focuses on the direct and interactive influence of leadership attachment styles (secure, anxious, and avoidant) and commitment HR system on two distinct stages of the individual innovation process—idea generation and implementation. We test our hypotheses in two studies. An experimental study of undergraduate students establishes a positive effect of secure attachment on idea implementation. The interplay between commitment HR system and avoidant attachment marginally predict idea generation; commitment HR system and neither secure nor anxious attachment predict implementation. A multisource multi-level field study in three EU-based private firms replicates the direct role of commitment HR system in stimulating idea implementation (but not generation) and suggests that secure attachment fosters both generation and implementation, whereas anxious attachment hinders both. Moderation analyses support only a marginal interaction between commitment HR system and secure attachment in fostering idea generation. We discuss theoretical, practical, and future research implications.     

Optimal quantization applied to sliced inverse regression

In this paper we consider a semiparametric regression model involving a d-dimensional quantitative explanatory variable X and including a dimension reduction of X via an index β′X. In this model, the main goal is to estimate the Euclidean parameter β and to predict the real response variable Y conditionally to X. Our approach is based on sliced inverse regression (SIR) method and optimal quantization in L^p-norm. We obtain the convergence of the proposed estimators of β and of the conditional distribution. Simulation studies show the good numerical behavior of the proposed estimators for finite sample size.