启发式教学初探

启发式教学 ,注重的是学生学习兴趣和目的的培养 ,不断增强课堂教学的趣味性 ,巧妙地提出问题 ,抓住重点 ,突破难点 ,精讲多练 ,使学生的学习变“被动”为“主动” ,从而达到启发式教学的目的     

Does offering an organic food menu help restaurants excel in competition? An examination of diners’ decision-making

This study aims to examine whether the presence of an organic food menu can positively influence diners’ decision-making. A 3 (restaurant segment: quick service vs. casual dining vs. fine dining) by 2 (price discrepancy between competing restaurants: small vs. large) scenario-based experiment was conducted with 405 U.S. consumers. MANCOVA results indicate that using organic ingredients offers a greater advantage for the quick-service segment regarding perceived food quality, attitudes towards the restaurant, and willingness to select, compared to casual and fine dining segments. The magnitude of a premium price of organic ingredients negatively influences such advantage in the process of consumers’ decision-making. When a large (vs. small) premium price is charged for using organic ingredients, customers’ preferences for the restaurant (over its rival) significantly drops to such an extent that customers are more willing to choose the competitor (i.e., rival restaurant with a conventional menu). Discussions and implications are further elaborated.     

基于层次分析法的企业循环经济发展模式选择模型研究

首先以企业产权边界、企业间联系两个维度为依据,归纳了企业发展循环经济的五种模式。随后运用层次分析法,在充分考虑了循环经济本身特有的稀缺性、外部性、稳定性、收益性等经济学特性后,提出企业选择循环经济发展模式决策模型。最后通过模型计算分析,指出企业集团循环经济发展模式应该是未来企业推进循环经济理论研究和实践重点。     

协同通信系统中差分调制在Rayleigh衰落信道中的误码性能分析

根据源-中继-目的节点链路的等效信噪比模型,推导了检测传送和选择检测传送两种 协议下目的节点瞬时信噪比的概率密度函数和特征函数,基于此推导了协同DMPSK调制近似 误符号率的闭合表达式。推导结果不含积分表达式,方便计算,为系统设计和功率分配提供 了理论基础。最后通过仿真验证了推导结果的正确性。     

基于节点企业优选的生态工业园构建研究

本文首先介绍了生态工业园的概念。在此基础上,对当今国内外生态工业园构建情况进行论述,得出生态工业园构建的两条关键因素是共生链的建立与废弃物的处理。本文围绕两条关键因素,对生态工业园构建进行分析。根据生态工业园所需要完成的功能,列出达到共生链所需要六个条件,应用向量内积公式的方法,按照六个条件对企业进行两两内积运算,找出传统工业园中存在的或者潜在的共生链。传统工业园内的企业经共生链相连,形成传统工业园网络,可通过网络有向图表示。对传统工业园中的各个节点企业进行中心性分析,得出各节点企业的共生链占有率。分析和论述传统工业园中的企业废弃物的可用性以及污染度,研究废弃物的处理方法。将生态工业园构建两条关键因素分析向结合,对传统工业园内的节点企业进行优选,并给出处理对策,进而完成生态工业园的初步构建。     

The importance of being earners: why women in South Africa need well-paid jobs

The ‘children fare better’ viewpoint claims that children tend to be better fed if their mother (as opposed to father) has sufficient income of her own for food. This paper assesses this claim for South Africa, using data from household surveys. It considers the possibility that this issue is related to domestic violence between husband and wife, and finds an apparent link between wife's earnings, child nutrition and domestic violence. Children's well-being seems more assured if mothers have an adequate income; but there is more risk of inadequate nutrition in households where there is domestic violence against wives.     

践行科学发展观创新选人用人标准

科学发展观为新世纪新阶段的干部管理工作指明了方向，也对干部队伍建设提出了新任务和新要求。要坚持在干部选拔任用工作中以政治先进、品德高尚、知识丰富、能力突出、业绩优秀、群众公认作为主要标准，促进大批优秀干部脱颖而出，为快速发展科学发展积聚起宏大的骨干力量，为实现社会主义现代化提供坚强的组织保证。     

On the finite sample behavior of testing whether new is better than used of a specified age

Hollander, Park and Proschan (1986) proposed a test of new is better than used of a specified age. It is based on large sample normality of the test statistic. There is, however, no study in the literature on its actual size for small and moderate sample sizes. To shed some lights on this, the results of a Monte Carlo simulation study as well as two real data examples are reported and these indicate that the test can have a quite liberal size, especially for small to moderate sample sizes. In order to improve on this weakness, a modified test is proposed and studied. It is noticed that this modified test seems to over-correct the original test to an extent that it becomes unduly conservative sometimes. Hence we propose another modification that combines the original test and the modified test turns out to have its size quite close to the nominal level and is therefore preferable to both the original and modified tests.     

跨国并购与我国资产评估法的完善

跨国并购促进了我国技术进步、市场完善和经济增长.由于相关法制的缺失,跨国并购也带来了国有资产流失问题.鉴于此,必须从企业产权主体的归位、资产评估机构的中立性以及资产评估方法的合理筛选等方面完善我国的资产评估法律制度.     

论课程改革的文化选择

文化选择是课程改革的核心话题。由于课程改革者难以摆脱文化主位意识的左右,课程改革的文化选择的中立与平衡的假设只能是一个不现实的神话。统治阶层占据主流文化地位,具有对课程知识的绝对选择权,会更多地倾向于主流文化。面对多样的社会文化,课程文化选择有探寻文化的普遍性与顺应文化的多元性两种思路,但都应以民主公平为原则,建构相互尊重、相互理解与信任的、和而不同的课程文化。