任务驱动式电子商务教学模拟系统的设计

"任务驱动"教学法强调学生在真实场景中的任务驱动下,在探究完成任务或解决问题的过程中,在自主和协作的环境中,在讨论和会话的氛围中进行学习活动,最终达到使学生有效地实现对当前所学知识的意义建构的目的;电子商务教学模拟系统正是基于这一思想的探索与尝试,建立电子商务的网上学习、交流、测试的环境,学生通过具体操作来理解、掌握商务实践的方法、手段、技术要点,熟悉电子商务的运作流程;同时通过在线交流、自测、考试等形式检验学生对知识的掌握情况,力求使学生最终掌握这门新兴学科,能够运用所学的理论和方法构建一个符合需求的电子商务系统。     

输油管的优化布置模型

通过对输油管的布置进行深入研究,根据两炼油厂到铁路线距离和两炼油厂间距离的各种不同情形,考虑共用管线费和非共用管线费相同(或不同),以及A、B两炼油厂的生产能力不相同时,选用相适合的油管,利用几何知识和函数极值解的知识,建立以总铺设费用为目标函数的优化模型。     

我国体育资源优化配置实现机制的理论探索

运用帕累托优化原理,对我国目前体育资源优化配置障碍以及体育资源优化配置等进行了分析。结果表明：转换政府职能,发挥市场配置作用;完善体育市场机制和体制;引入社会监督机制;发挥地方政府优势提高体育资源配置效率等四项措施。     

变压器铁芯柱截面优化模型与设计

本文建立了变压器铁芯柱截面形状和油道位置的普遍性、通用性优化模型,该模型考虑了铁芯柱截面阶梯的初级最小厚度和末级最小宽度,可允许一定的圆形线圈半径误差,并且非常有利于数学优化软件开展规范化求解。文中给出了优化算例,设计并绘制了各类铁芯柱截面图。     

Customer acceptance of IPTV service quality

The purpose of this article is to provide insights into the effects of Internet Protocol Television (IPTV) service quality and reveal mediation effects in the process of forming the repurchase intention. This study incorporates additional theoretical construct, perceived enjoyment, to reflect IPTV characteristics using extended technology acceptance model (TAM). This study empirically investigated a research model and conducted a survey of IPTV service users. The results of this study are as follows. First, IPTV service quality is summarized as design, security, and customer service, which is supported by second-order factor analysis. Service quality had an influence on perceived usefulness, perceived ease of use, and perceived enjoyment. Second, perceived ease of use had a significant effect on perceived enjoyment, and perceived usefulness also had an effect on repurchase intention. Third, attitude, trust, and satisfaction had a positive effect on repurchase intention. To reveal the impact on repurchase intention of the IPTV service quality, this study proposes customer acceptance on IPTV service based on a modified TAM.     

Collaborative management of business metadata

Legal provisions, cross-company data exchange and intra-company reporting or planning procedures require comprehensively, timely, unambiguously and understandably specified business objects (e.g. materials, customers, and suppliers). On the one hand, this business metadata has to cover miscellaneous regional peculiarities in order to enable business activities anywhere in the world. On the other hand, data structures need to be standardized throughout the entire company in order to be able to perform global spend analysis, for example. In addition, business objects should adapt to new market conditions or regulatory requirements as quickly and consistently as possible. Centrally organized corporate metadata managers (e.g. within a central IT department) are hardly able to meet all these demands. They should be supported by key users from several business divisions and regions, who contribute expert knowledge. However, despite the advantages regarding high metadata quality on a corporate level, a collaborative metadata management approach of this kind has to ensure low effort for knowledge contributors as in most cases these regional or divisional experts do not benefit from metadata quality themselves. Therefore, the paper at hand identifies requirements to be met by a business metadata repository, which is a tool that can effectively support collaborative management of business metadata. In addition, the paper presents the results of an evaluation of these requirements with business experts from various companies and of scenario tests with a wiki-based prototype at the company Bayer CropScience AG. The evaluation shows two things: First, collaboration is a success factor when it comes to establishing effective business metadata management and integrating metadata with enterprise systems, and second, semantic wikis are well suited to realizing business metadata repositories.     

浅谈颠覆性技术

主导性设计和颠覆性技术是技术、产品和服务业务的两种商业模式。本文主要通过颠覆性技术与维持性技术之间的比较介绍了什么是颠覆性技术,并讨论了在辨别颠覆性技术时可能遇到的问题。     

桌面型虚拟现实系统场景优化问题研究

桌面型虚拟现实系统的应用慢慢开始普及,特别是在网络上,有很多虚拟旅游、虚拟博物馆、虚拟学习环境,让人们在计算机前就能得到较为真实的直观感受。但是,虚拟现实场景的显示是由计算机的显卡和中央处理器实时运算产生的,对于小场景的虚拟现实问题不会很大,但对于大场景,如果不对虚拟场景模型进行优化处理,将大大影响其运行速度,降低虚拟现实场景的表现力。     

基于顾客满意度的改进设计决策模型

由于科学技术发展越来越快,产品生命周期缩短,生产成本降低空间缩小,技术创新空间降低,各企业对顾客满意度的关注度越来越高,但是随着产品生命周期的缩短,产品更新换代速度的加快,企业对于产品改计的切入点寻找难度增加,改进成本也随之提高,本文从顾客满意度的角度,对卡诺(Kano)模型进行改进,引入优先指数,将待改进指标进行排序,使企业的改进方向更为明确,为改进决策起导向作用。     

优化建筑工程施工现场管理研究

建筑工程施工现场管理应加强施工项目管理,遵循各种原则,采取各种有效的措施,以有效控制施工现场。针对提高建筑工程项目施工现场管理成效的途径与措施,笔者阐述了自己的观点。