《大学语文》教学中的教师主体性研究

由于日益物质化、功利化的社会大环境的影响和课程自身的弱点等原因,作为大学人文素质教育的"先驱"和"主干"课程的大学语文濒临被弱化和边缘化的艰危处境,作为从教多年的大学语文教师,试结合自己的教学实践,从教师这一视角论述如何充分发挥教师的主体能动作用,为大学语文教学走出困境尽其绵薄之力。     

国外“三生教育”的探索与借鉴

国外的“三生教育”在实践探索中积累了丰富的成功经验,主要突出对人的生命关注,注重提高人的生存能力和重在促进人的身心健康。在对国外“三生教育”经验的借鉴中,需要结合我国实际,从树立理念、深化改革、突出实践和健全机制上下功夫。     

Almost optimal solutions for bin coloring problems

In this paper we study two interesting bin coloring problems: Minimum Bin Coloring Problem (MinBC) and Online Maximum Bin Coloring Problem (OMaxBC), motivated from several applications in networking. For the MinBC problem, we present two near linear time approximation algorithms to achieve almost optimal solutions, i.e., no more than OPT+2 and OPT+1 respectively, where OPT is the optimal solution. For the OMaxBC problem, we first introduce a deterministic 2-competitive greedy algorithm, and then give lower bounds for any deterministic and randomized (against adaptive offline adversary) online algorithms. The lower bounds show that our deterministic algorithm achieves the best possible competitive ratio. The research of this paper was partially supported by an NSF CAREER award CCF-0546509.     

Accountability in the Shadow of Hierarchy: The Horizontal Accountability of Agencies

In the Netherlands, new accountability arrangements are created as remedies for the accountability deficit of agencies. These arrangements are of a ‘horizontal’ nature, as the agencies account for their behaviour towards accountees that are not their hierarchical superiors: clients, stakeholders or peers. This paper provides an inventory and qualitative assessment of horizontal accountability arrangements. It is argued that they have added value because they stimulate learning. However, horizontal accountability is not a substitute for hierarchical accountability. Horizontal accountability arrangements operate ‘in the shadow of hierarchy’: they gain significance through complex interactions with traditional forms of accountability.

基于遗传算法的资源约束型项目调度优化

资源约束型项目调度的优化是一个NP-hard问题,其求解难度随着资源约束项的增多呈指数方式增长,传统的基于Excel表的手工优化方法不能及时计算出有效的资源配置方式,从而影响项目管理人员的资源调度.针对多资源约束型项目调度的优化问题提出基于遗传算法的资源约束型项目调度的优化方法,该算法采用基于活动优先权的十进制编码方式,结合活动的存储邻接矩阵,有效地解决活动调度违例现象;运用优先抢占模式的资源分配方式安排活动资源,避免资源分配中的冲突问题;并为该算法设计了启发式遗传算法的C语言程序,通过计算机的多次迭代运算得出满足资源约束的最优工期.实践结果表明,遗传算法可以快速有效地解决企业项目调度的优化问题,适合在企业项目进度管理中推广运用.     

The effect of alliance experience and intellectual capital on the value creation of international strategic alliances

This paper investigates the effects of intellectual capital (IC), alliance experience and their interaction on the value creation of international strategic alliances (ISAs). Based on a sample of ISAs formed by US firms, we find that firms with a higher level of IC receive greater announcement-period wealth gains. In addition, the empirical results suggest experience positively enhances the wealth effect of ISAs. Finally, we find a significant positive interaction effect between experience and IC on the wealth creation of ISAs. The results demonstrate the importance of considering the joint effects of IC and experience in assessing the value creation of ISAs.     

Hypothesis group testing for disjoint pairs

Classical group testing (CGT) is a widely applicable biotechnical technique used to identify a small number of distinguished objects from a population when the presence of any one of these distinguished objects among a group of others produces an observable result. This paper discusses a variant of CGT called group testing for disjoint pairs (GTAP). The difference between the two is that in GTDP, the distinguished items are pairs from, not individual objects in, the population. There are several biological examples of when this abstract model applies. One biological example is DNA hybridization. The presence of pairs of hybridized DNA strands can be detected in a pool of DNA strands. Another situation is the detection of binding interactions between prey and bait proteins. This paper gives a random pooling method, similar in spirit to hypothesis testing, which identifies pairs of objects from a population that collectively have an observable function. This method is simply to apply, achieves good results, is amenable to automation and can be easily modified to compensate for testing errors. M.A. Bishop is supported by AFOSR FA8750-06-C-0007. A.J. Macula is supported by NSF-0436298, AFOSR FA8750-06-C-0007.     

A survey on nonadaptive group testing algorithms through the angle of decoding

Group testing, sometimes called pooling design, has been applied to a variety of problems such as blood testing, multiple access communication, coding theory, among others. Recently, screening experiments in molecular biology has become the most important application. In this paper, we review several models in this application by focusing on decoding, namely, giving a comparative study of how the problem is solved in each of these models.     

合作学习的集体困境与解决策略——基于情境理论操作化的思考

情境学习理论提出"实践共同体"概念,关注群体学习互动如何置于复合的社会和文化环境当中。但是,当群体互动概念应用于中国本土的团队实践之时,却遭遇集体行动的困境。为此,笔者尝试提出回归教师权威和重建小组认同的两种修正路径,以探讨摆脱困境的操作策略。     

小组工作中的游戏解说——从“体验学习圈”到“游戏学习圈”

游戏是在一定规则下的生活体验,对于人类的学习意义重大。小组工作常会设置游戏,通过游戏提升小组动力、达成小组目标。在影响游戏学习效果的各种因素中,游戏解说尤为重要。本文参照库伯的体验学习圈,建构出适用于小组工作的游戏学习圈,并在游戏学习圈的理论基础上,提出小组游戏解说的具体三步骤。