Mate choice and male competition inOrchesella cincta (Collembola)

Summary Both male and femaleOrchesella cincta (Collembola) were able to discriminate between spermatophores of different origin. Females chose spermatophores deposited by closely related males while males preferentially destroyed spermatophores of other males.     

英语阅读测试常用题型特征分析

论述了阅读理解题的总体特征 ,然后分述了四种常用阅读理解题型即多项选择题、正误判断题、问答题和填空题各自的特征     

Photoshop对其他图形图像处理软件的支持

在电脑设计制作领域,需要我们对各种软件融会贯通,每一种软件在实现艺术的某一种功能方面都各有其长,然而,没有一种软件能够在某种独特风格的处理和复合实例中可以独立完成。本文通过一些实例,探讨Photoshop对其他图形图像处理软件的支持。     

基于资源观与风险观的中外联盟企业策略差异

阐述了资源观与风险观在国际战略联盟中的涵义,并以此为基础构建资源-风险二维分析框架,探讨了资源与风险两类关键因素对国际战略联盟中中外企业各自战略定位和策略选择的影响.研究结果表明:向联盟贡献技术和管理资源的国外企业当面临高关系风险时应当关注技术安全和联盟管理权,但当面临较高绩效风险时则应当关注技术与管理资源的产出效率;相反,向联盟贡献物质和关系资源的国内企业当面临高关系风险时应当关注联盟稳定,但当面临较高绩效风险时则应当关注联盟学习.     

鲁迅小说中觉醒知识分子的悲剧宿命

本文从知识分子的角度对鲁迅作品中首先觉醒的知识分子的悲剧结局进行了重新分析,并从知识分子的使命、社会立足点和话语资格以及文化选择上的困惑诸方面详细分析了这一批知识分子之所以不得不以悲剧结束的必然原因。     

Cell-to-cell coupling studied by diffusional methods in myocardial cells

Summary The diffusion of large molecular substances from cell to cell in multicellular and enzymatically isolated cell pairs is described. Permeability of the gap junctional membrane to these molecules and the critical diffusing diameter of the myocardial gap junctional channel are discussed.     

Diffusion of new products in risk-sensitive markets

Diffusion of new products may be deterred by consumers' uncertainties about how they will perform. This paper introduces a decision-theoretic framework for modeling the diffusion of consumables, in which consumers choose between a current and new product so as to maximize expected utility. Consumers that are sufficiently risk-averse delay adoption, and change their prior uncertainties in a Bayesian fashion using information generated by early adopters. Under certain assumptions about the underlying consumer choice process and the market dynamics, the result is logistic growth in the share of consumers that choose the new product. The model can be generalized by allowing for consumer heterogeneity with respect to performance of the new product. The paper concludes with a discussion of applications for market forecasting, design of market trials and other extensions.     

考虑家庭成员的早高峰出行行为分析

早高峰出行行为一般包括：通勤和通学.随着私家车拥有率的提高，在早高峰期间，家庭成员乘坐同一辆车，从居住地出发到达多个目的地的现象越来越普遍，如：通勤者开车先将小孩送到学校，继而前行去往工作地上班.本文基于Y型道路汇流网络，考虑个人通勤和家庭通勤两类出行者，构建高峰期出行选择均衡模型，分析通勤者的出发时间选择.在用户均衡状态下，每类通勤者都不能通过单方面改变自己的行为选择而使其出行成本变得更小.最后，通过数值算例对理论结论进行了验证和分析.     

应对期刊数字化的编辑策略

数字化传播成为当下学术期刊的主要传播方式。与纸质媒介时代相比,数字化传播具有网状结构,信息量更大,更准确,传播速度更快。期刊编辑为了适应数字化的传播方式,可以采取加快审稿和刊发速度,注重栏目和选题策划,突出标题和版式设计等策略,吸引读者阅读。