多媒体信息呈现方式、问题类型对阅读效果的影响研究

以某权威杂志上一片科普文章为实验材料,采用2×2混合设计,通过设置题目类型考察了多媒体呈现方式对阅读效果的影响,结果发现:①多媒体呈现方式对线索类问题的错误率有显著影响:被试回答线索类问题时,线性呈现方式下答题错误率高于网状呈现方式下大体错误率;②问题类型对线性呈现方式下被试回答问题用时有显著影响:线性文本呈现方式下,被试回答概念类问题所用时间多于回答线索类问题用时。     

"问题讨论式教学法"应用初探

本文通过对实验班采用问题讨论式教学法施教,对照班采用传统的注入式教学法施教。从两班学生测验成绩比较看,实验班测验成绩明显高于对照班,有高度显著性差异,表明问题讨论式教学法明显优于传统教学法,问题讨论式教学法有助于培养学生的智能。     

金融危机形势下催生着新型的物流服务业态

文中首先介绍了我国物流经济运行的基本态势,接下来对金融危机给我国物流业造成的影响进行了SWOT分析,在此基础上讨论了应对金融危机的策略并提出了基于网络信息技术的供应链服务模式。     

致密砂岩气藏开发阶段地层研究尺度

随着油气田开发的深入，油气藏描述需要更加精细的地层划分对比方案，但需要讨论研究尺度的合理性。以新召东区致密砂岩气藏为例，通过对地质特征、开采现状和地震条件的统计分析，认为需要分析地震资料品质、沉积相类型和砂体可分性等3方面因素。地震资料品质考查的是地震能够分辨的单砂体厚度，沉积相类型研究的是砂体发育程度及连续性，砂体可分性揭示的是小层内测井可识别的单砂体个数。研究成果可为开发阶段地层研究尺度确定提供借鉴。     

Asymmetric evolutionary games with non-linear pure strategy payoffs

In this paper, I extend the analytical framework of evolutionary game theory to games with two distinct types of players where the type-specific payoff functions are nonlinear on the right—bi-player-type nonlinear (BNL) evolutionary games. That is, asymmetric games where the payoffs for pairwise interactions are influenced by the ambient frequencies of the pertinent strategies of both types of players.While this paper is motivated by my interest in inter- and intra-gender conflicts of interest in sexual reproduction, BNL games also arise just as naturally in most two-species interactions. Thus, the methodology may provide a novel approach to investigating such classical ecological phenomena as prey–predator/host–parasite interactions and interspecies competition for resources.Finally, given the growing tendency to utilize evolutionary games in economic modeling, a case can be made for the current paper being of interest to traditional game-theoretic modelers in connection with situations such as buyer/seller or employer/employee interaction.     

两种积放式悬挂输送机机型的浅析

分析了“推杆式”和“推钩式”这两种积放式悬挂输送机机型，从原理、结构到功能，阐述了各自的优势和问题     

企业社会责任价值观研究——以山东省2200家企业调查为例

文章通过对山东省2200家企业的调查实证研究,得到中国企业社会责任的6个价值观因子,基于此将企业分成7个价值观群体,发现不同类型企业的社会责任价值观存在显著差异。不同类型的企业在社会责任方面应该互相取长补短,更好地参与企业社会责任运动。     

Nitrate pollution control under soil heterogeneity

This article presents results on measures to abate nitrogen pollution when soil heterogeneity is considered by using a dynamic model of corn production. Several policy options for the control of nitrate pollution are evaluated by their cost efficiency. While results show that a nitrogen standard or tax is a good second-best control instrument, neglecting dynamics may lead to the wrong choice of instrument. Other important findings for the design of nonpoint pollution policy measures are that water pricing, as advocated by the Water Framework Directive, is inefficient as a pollution abatement tool, and differentiating control measures by soil type enhances welfare, although welfare gains may be small.     

公司特征、行业特征和并购战略类型的实证研究

This paper studies 148 related and 169 unrelated acquisition cases conducted by Chinese listed firms from 2001 to 2004 and explores firm and industry characteristics of these firms prior to their acquisition. Results show that there are significant pre-acquisition differences between firms pursuing related acquisition and firms pursuing unrelated acquisition in terms of firm performance, business risk, firm size, proportion of state shares and degree of diversification profile. Except for differences in internal capital as represented by undistributed profit per share, there is no significant difference in other aspects of available resources and industry performance. Translated and revised from Guanli Shijie 管理世界 (Management World), 2007, (3): 130–137     

关于《汽车发动机产品名称和型号编制规则》的探讨

本文在对GB/T725-1991《内燃机产品名称和型号编制规则》技术分析的基础上,提出制定我国汽车工业《汽车发动机产品名称和型号编号规则》标准的全面的、探讨性的建议。