Impacts of employee participation and trust on e-business readiness, benefits, and satisfaction

An increasing number of firms have invested large sums in implementing electronic business (e-business). Nowadays, while the e-businesses are fostering rapid industrial growth, employees are the one who factually engage with information exchange, communication and support e-business processes. However, prior literature has paid scant attention in determining e-business value and its drivers from employee perspective. Thus, the present study attempts to investigate how user participation and trust drives e-business value in terms of e-business readiness, e-business benefits, and e-business satisfaction. For this sake, data collected from 143 employees at Taiwanese IT related firms and analyzed with partial least square (PLS) structural equation approach reveal that trust and user participation were significant precursors of employee e-business satisfaction. The results strongly support the contention that trust directly affects e-business satisfaction, and indirectly affects it through e-business readiness and e-business benefits. The research model and findings will help managers implement e-business successfully and offer valuable references for researchers interested in developing related theories.     

块效应图像质量模糊评估标准

研究和讨论了图像质量评估方法,提出一种基于模糊推理的块效应评估标准。假设图像由平滑区域、边缘区域以及纹理区域等组成,而且不同的区域应采用不同的方法进行质量评估。在此基础上,给出了三个分别适用于不同区域的图像质量评估因子,并提出了一个灵活的模糊图像质量评估方法。此方法把块效应和图像本身具有的边缘分开,防止了边缘会被误认为是块效应。仿真结果表明,提出的标准对于不同的图像具有鲁棒性,有一般图像质量评价标准的性能。     

结合PVT模拟和排队模型的系统级主存性能分析

由于主存系统的性能受到多种因素的影响,现有方法不能快速地得到可靠的分析结果,从而影响芯片质量和上市时机.为解决此问题,提出将带时序的程序员视图(PVT)模拟和排队论相结合的方法--ComPQ.首先从PVT模拟中提取与访存相关的系统级实时参数,然后将主存系统抽象为非抢占优先的M/G/1排队模型,再结合实时参数进行性能分析,得到平均访存延迟结果.由于PVT的建模和模拟代价小,从中得到的实时参数弥补了静态理论分析的不足;同时,排队论也提高了纯PVT模拟的精度.实验结果表明,ComPQ与周期精确级模拟相比平均误差为6. 38%,最后用主存系统设计空间探索的实例验证了ComPQ的有效性.     

高校计算机课程实验教学浅议

实验教学是高校计算机教学的一项重要内容,本文针对当前大学计算机课程实验教学,从课前、课中、课后对教学进行了讨论,提出了一些建议.     

基于变结构控制碟形飞行器复合控制方法研究

针对多输入系统的自由递阶变结构控制方法对碟形飞行器的复合控制问题进行了研究,问题在于如何协调执行机构之间的关系.为了优化系统的稳定性,通过对碟形飞行器所受合外力和力矩的分析可以得到碟形飞行器动质心运动动力学方程、动质心运动学方程、绕动质心转动的动力学和运动学方程、以及角度关系方程等数学模型,再进行小偏差线性化,得到纵向通道变质量矩/推力矢量复合控制线性化方程.其次,针对碟形飞行器变质量矩/推力矢量复合控制系统,设计了关于双输入系统的自由递阶变结构控制器,并进行了仿真.结果证明,与传统的PD控制器的仿真结果进行了对比.自由递阶变结构控制器对于正弦波的跟踪效果更好.     

FPGA按键模式的研究与设计

对FPGA设计中使用按键的常见方式进行归纳概括,提出单键复键两类共5种典型的按键模式:琴键、脉冲、乒乓、连发和长键模式,并对每种按键模式进行了分析与设计,同时给出了设计综合的仿真结果。     

基于DSL的装备保障领域建模

基于领域专用语言构建了装备保障领域的元模型,描述了实体、关系、行为、约束、流程等基本要素,在该模型中,二次开发人员能够方便地对该领域的各类软件系统进行建模,并通过模型精化来自动生成最终的可执行系统。实验证明,该模型是有效的。     

保证数据流融合中处理一致性的事务机制

在分布式实时传感器网络应用中,主要目标之一是保证协作交互的数据流融合任务花费较少的能源代价,能够正确、实时、原子地外化监测区域信息.因此,本文重点研究了分布式传感器网络环境下对多数据流交互处理过程的事务控制机制.首先,定义了传感器网络数据融合过程的协作执行模型.其次,用运控制区域的概念,提出了一种基于系统时间戳的自适应的数据融合交互处理的事务模型及其ACID规则.最后,设计了一种适宜实时环境的数据融合事务的两阶段提交、回滚协议.测试结果分析表明,它能够显著提高采集数据进行事务处理的外化速率,降低了事务的失败率及网络能耗,特别适用于处理间歇、高速的传感器网络外部采集数据.     

油气工程师助手（PDA）移动代理平台的研究与实现

移动计算被认为是对未来最有影响的四大技术方向之一,它使得计算机或其他信息设备在没有与固定的物理连接设备相连的情况下能够传输数据,将有用、准确、及时的信息能提供给在任何时间、任何地点需要它的任何用户。而移动代理是唯一能满足移动计算全部要求的体系框架。为了更好地支持便携式设备上Microsoft的WinCE平台的移动计算,设计了一个基于C＋＋的支持Windows操作系统的企业用移动代理系统——WinMAS,首次提出了基于编译性语言上的新移动代理迁移机制——利用RPC的序列化和远线程插入机制。     

Incombustible Polymer Electrolyte Boosting Safety of Solid-State Lithium Batteries: A Review

Lithium-ion batteries with their portability, high energy density, and reusability are frequently used in today's world. Under extreme conditions, lithium-ion batteries leak, burn, and even explode. Therefore, improving the safety of lithium-ion batteries has become a focus of attention. Researchers believe using a solid electrolyte instead of a liquid one can solve the lithium battery safety issue. Due to the low price, good processability and high safety of the solid polymer electrolytes, increasing attention have been paid to them. However, polymer electrolytes can also decompose and burn under extreme conditions. Moreover, lithium dendrites are formed continuously due to the uneven charge distribution on the surface of the lithium metal anode. A short circuit caused by a lithium dendrite can cause the battery to thermal runaway. As a result, the safety of polymer solid-state batteries remains a challenge. In this review, the thermal runaway mechanism of the batteries is summarized, and the batteries abuse test standard is introduced. In addition, the recent works on the high-safety polymer electrolytes and the solution strategies of lithium anode problems in polymer batteries are reviewed. Finally, the development direction of safe polymer solid lithium batteries is prospected.