Applying TAM in B2C E-Commerce Research: An Extended Model

As one of the most widely accepted adoption models in information systems research, the technology acceptance model （TAM） focuses exclusively on cognition-oriented constructs such as perceived usefulness and perceived ease of use. This perspective may have limited the explanatory power of TAM when it is utilized in studying consumers’ adoption intentions of online shopping. Based on the contrasts between e-commerce systems and traditional workplace information systems as well as empirical findings from a variety of recent e-commerce research works, this paper analyzes an extended model which integrates three additional constructs： trust, social presence, and perceived enjoyment. The interrelationship between these constructs is also explained. Empirical validations of this extended model are expected in future research.     

3G技术接受模型主要影响因素分析

以Davis的技术接受模型为理论基础,根据移动市场的特点对其拓扑结构进行了修正.建立了3G技术接受模型,并把3G的3种通信标准作为影响其他外部变量的根本因素,预测中国移动市场的走势,为3家运营商吸纳3G用户的战略调整提供有参考价值的建议.通过访谈法与问卷调查法相结合,对影响消费者使用3G意向的因素进行了实证研究,初步结论表明影响消费者使用3G的主要因素包括需求、个性化、更换手机、更换手机号等.     

IDT-TAM Integrated Model for IT Adoption

Two classical theories, the technology acceptance model （TAM） and the innovation diffusion theory （IDT）, were integrated into a model for analyzing individual information technology （IT） adoption behavior. In this IDT-TAM framework, the perceived characteristics of innovation are categorized as subjective evaluation, objective conditions, and interaction factors. The cognitive mechanisms that drive user IT acceptance are analyzed based on the patterns through which these characteristics influence individual user IT adoption behavior. The model was tested using an empirical survey regarding the adoption and use of e-mail in China. Results from a structural equation model analysis illustrate that the model provides meaningful insights for understanding, explaining, and predicting the IT adoption behavior of Chinese users.     

ERP系统实施过程中的TAM-TOE整合模型

本文以TAM模型和TOE模型为基础,同时借鉴组织同化的制度理论,对ERP系统实施过程的组织采纳问题进行了探讨。从技术、组织和环境三个纬度归纳概括出影响ERP系统实施的因素,并分析各因素之间的关系,提出本文的概念模型及后续的研究计划。     

松砂直剪试验中的经典与非经典场量数值分析

采用改进的离散元商业软件PFC2D,通过大量的模拟分析了松散砂土直剪试验中的经典与非经典场量。经典场量包括应力、应变、速度场以及应力路径;非经典场量包括转动场、组构和配位数等。不仅分析了剪切过程中经典与非经典场量的变化规律,而且探讨了两种常量之间的联系。研究结果表明,应力应变状态等经典变量与配位数、组构以及颗粒运动状态之间是相互联系的,非经典变量是经典变量的微观本质体现。     

Extending TAM for Online Learning Systems: An Intrinsic Motivation Perspective

To get a better understanding of user behavior towards online learning systems, the technology acceptance model （TAM） was extended to include an intrinsic motivational factor. An online survey posted on a campus BBS was conducted to collect research data with a total of 121 usable responses. The results support the motivational model and show that the explained variance of online learning system use behavior is 71.3% higher than that of the original TAM explanation.     

区域产业结构演进与城市化发展关系研究——以关中地区为例

目的探讨产业结构演进与城市化相互作用问题,为区域经济发展提供重要的理论依据。方法以关中地区为例,采用回归分析和钱纳里模型,分析了1949—2009年间关中地区产业结构演进与城市化的时序关系、相关关系和协调关系。结果关中地区产业结构演进与城市化进程具有明显的时序关系,可划分为快速起步、缓慢发展、稳步上升和快速发展4个阶段;在不同的发展阶段,各产业与城市化的相关关系不同;并且产业结构演进与城市化发展的不协调程度在加剧。结论低工业化水平和低劳动吸纳力是导致产业结构演进与城市化发展不协调的根本原因。因此,做大工业规模、提升工业生产技术水平是促进二者协调发展的根本途径。     

浅析NGOSS5.0变革之——TAM

eTOM一直以来都是众多NGOSS专家学者研究的聚焦点,因为它为运营商提供了端到端业务流程自动化的解决方案,NGOSS5.0中有许多新的变化,其中一块就是新增的TAM,TAM的每一个模块都是功能点,从而使得许多厂家和运营商终于可以把自己的产品与系统和NGOSS中相应的理论对应起来。分析了TAM在NGOSS中的地位和作用,以及TAM在NGOSS方法论指导下的对电信运营的现实意义,在此基础上预测了TAM的下一步研究内容。     

社交网络交通信息出行者使用意向分析模型

为解决出行者对社交网络交通信息的使用意向缺少定量描述方法的问题,在技术接受模型的基础上,以感知有用性、感知易用性、感知风险性、使用意向等7个潜变量描述出行者的心理感受,构建社交网络交通信息使用意向分析模型,运用结构方程模型定量分析潜变量对使用意向的直接或间接影响效应。最后将模型应用于重庆市出行者实例分析中,结果表明：感知风险性(-0.41)对使用意向具有负向影响,其余变量对使用意向均为正向影响,其中感知易用性(0.48)、感知有用性(0.46)对使用意向的影响总效应最为显著。     

应用型本科高校课堂教学满意度测量及影响因素研究——基于CZ大学的调查数据

对课堂教学满意度进行评价并分析其影响因素有利于推动课堂教学质量的提升。利用顾客满意度指数模型和技术接受模型结合应用型本科高校教学活动情境构建,课堂教学满意度-学习投入研究概念模型,以CZ大学全日制在校本科生为调查对象开展调查,运用AMOS软件对概念模型进行实证检验。研究得出结论：感知有用性、感知易用性和师德师风能对课堂教学满意度产生显著的正向影响;师德师风、课堂管理和学习氛围能够显著正向影响学习投入。最后,围绕创新教学方式、提升教学技能,强化师德师风建设、营造学习氛围、加强课程规制与管理、完善考核体系等方面提出对策建议。     

随机变量序列的几个极限定理

利用停时技术的方法,研究了随机变量序列的一类极限定理。作为推论,得到了若干经典的独立随机变量序列的极限定理和一类鞅差序列的极限定理。     

电子商务研究中的行为理论基础

行为理论模型在电子商务的研究中越来越发挥重要的作用。分析了行为理论模型在电子商务研究中得到广泛应用的原因,介绍了合理行为模型、计划行为模型、技术接受模型在电子商务中的应用情况,对技术接受模型在电子商务中应用的最新模型进行了述评,总结了行为模型在电子商务研究中的应用趋势。     

跌倒防护机器人的用户接受度模型

跌倒防护机器人解决了老年群体由于跌倒造成伤亡的社会问题，为探究老年用户对其接受度问题，以基础技术接受模型为基础，将感知易用性、感知有用性、使用态度、行为意向、技术信任度、社会规范、个人创新意识、面子文化、舒适度9个变量纳入分析，提出12项假设，构建了跌倒防护机器人的接受度模型。通过李克特5点量表测量变量，并结合结构方程模型进行数学分析，探究变量间的相互作用关系。结果表明：9个变量之间的作用具有显著性，12项假设全部成立，跌倒防护机器人接受度模型具有较好的拟合性。可见，研究成果可以为进一步探讨跌倒防护机器人的设计、开发、推广和普及提供有效参考。     

古典与现代、学科与分支——人类学学者访谈录之二十六

中国人类学应该具备多元的研究方向 ,可以有非常古典的题目 ,也可以有非常现代的题目 ,古典与现代是相对 ,它们之间有内在的结合点 ,在学科建设上 ,完整的人类学应该包括 :考古学、语言学、体质人类学、文化人类学等四个分支。中国人类学应该朝着这个方向发展。     

Probabilistic SDG model description and fault inference for large-scale complex systems

Large-scale complex systems have the feature of including large amount of variables that have complex relationships, for which signed directed graph （SDG） model could serve as a significant tool by describing the causal relationships among variables. Although qualitative SDG expresses the causing effects between variables easily and clearly, it has many disadvantages or limitations. Probabilistic SDG proposed in the article describes deliver relationships among faults and variables by conditional probabilities, which contains more information and performs more applicability. The article introduces the concepts and con- struction approaches of probabilistic SDG, and presents the inference approaches aiming at fault diagnosis in this framework, i.e. Bayesian inference with graph elimination or junction tree algorithms to compute fault probabilities. Finally, the probabilistic SDG of a typical example of 65t/h boiler system is given.     

植被与环境关系的分析 Ⅰ:DCA排序

本文应用DCA排序方法对英国北威尔士Aber山谷植被与环境的关系进行了研究。结果表明排序是分析植被与环境关系的有效途径。在Aber山谷,土壤水分、pH值及土壤类型是影响植被分布的重要因子;海拔高度和坡度的作用也较明显。     

Difference in metapopulation structure and dynamics of two species of coexistent melitaeine butterflies

Habitat fragmentation has been considered to be the most important cause of the extinction and the loss of bio-diversity[1,2]. With the increase of human activities in re-cent years, natural habitat decreased rapidly and patches became smaller and more isolated[3,4]. This leads to an obvious change of population structure and dynamics of many species. However, some species may persist as metapopulations in seriously fragmented landscapes[5]. Metapopulation theory and methodology is estab-lish…     

An ancient nova shell around the dwarf nova Z Camelopardalis

Cataclysmic variables (classical novae and dwarf novae) are binary star systems in which a red dwarf transfers hydrogen-rich matter, by way of an accretion disk, to its white dwarf companion. In dwarf novae, an instability is believed to episodically dump much of the accretion disk onto the white dwarf. The liberation of gravitational potential energy then brightens these systems by up to 100-fold every few weeks or months. Thermonuclear-powered eruptions thousands of times more luminous occur in classical novae, accompanied by significant mass ejection and formation of clearly visible shells from the ejected material. Theory predicts that the white dwarfs in all dwarf novae must eventually accrete enough mass to undergo classical nova eruptions. Here we report a shell, an order of magnitude more extended than those detected around many classical novae, surrounding the prototypical dwarf nova Z Camelopardalis. The derived shell mass matches that of classical novae, and is inconsistent with the mass expected from a dwarf nova wind or a planetary nebula. The shell observationally links the prototypical dwarf nova Z Camelopardalis with an ancient nova eruption and the classical nova process.     

Research on status quo of global graphene technology based on bibliometrics

Innography patent database and Web of Science paper database are used to study the patent layouts and paper output results of global graphene technology,and the basic research and application research status of global graphene technology in recent five years are mainly analyzed.The research shows that China,the United States,Korea,Japan and India are the major graphene research and development(RD) countries;Chinese Academy of Sciences,Indian Institute of Technology,Tsinghua University,Samsung Electronics,LG Chem,and BOE are the main graphene RD institutions.Potential cooperative or competitive relationships exist between Chinese Academy of Sciences and Tsinghua University,and between Samsung Electronics and IBM,Semiconductor Energy Laboratory,the University of California,respectively.In addition,global graphene technology mainly focuses on graphene oxide,photocatalysis,hydrogen evolution reaction,adsorption,electrocatalysis,graphene electrode batteries,graphene electronic components,graphene preparation,etc.,and the pace of graphene industrialization is accelerating.     

B~2到B~4上的一族逆紧全纯多项式映照

不等维多元复欧式空间中单位球间的逆紧全纯映照问题是多元复分析研究领域的传统与经典问题,至今,仍有丰富的内容尚待研究.本文构造了一族二维单位球到四维单位球间的逆紧全纯多项式映照.