User Satisfaction with Tablet PC Features

Previous studies of tablet personal computers have concentrated on their use in education and healthcare. The current study focused instead on personal usage, investigating how satisfied users are with their own tablets after having used them in their daily lives. The objective was to identify the major features for tablets and to investigate how form factors affect the preference of functions by performing a comparison of iPad1 and Galaxy Tab. Also, gender and ethnicity were analyzed to determine whether they influence satisfaction with the devices. For e‐mail and web browsing functions, users’ ratings showed more satisfaction with the iPad1 since it has a larger display; for the e‐book reader function, users indicated higher satisfaction with the Galaxy Tab. Male users evaluated their devices by the function itself, whereas female users were mainly concerned with aesthetic aspects. Koreans indicated that they were less satisfied with their tablets than were other ethnic groups.     

基于CSS和JavaScript的网页选项卡的设计和实现

在现今的网页设计中,网页选项卡的应用非常广泛。用HTML编写网页内容、CSS设计内容样式、JavaScript实现事件驱动,通过理论分析和代码结合,实现了网页选项卡的制作。该方法设计的网页选项卡,在页面中已装载了全部内容,只是有部分内容被隐藏起来,只有被激活的内容显示出来,并且切换过程中不用刷新页面,减少了服务器的负担,因此得到了广泛的应用。     

Performance comparisons and resistance modeling for multi-segment electrode designs of power-oriented lithium-ion batteries

This study investigates the influence of tab position and quantity as well as multi-segment electrodes in cell design for the performance of an 18650 power-oriented lithium-ion cell. The resistances of cells with traditional and center-tab designs are simulated by a simplified model. It shows that tab position significantly influences the cell resistance even when other components in the cell are fixed. The performances of both center-tab and traditional designs are compared by the cell direct-current resistance (DCR), body temperature, and 15 A cycling test to demonstrate the impact of cell design. The multi-tab design also shows better performance than the single-tab design for power cells; however there are diminishing returns for cells with three or more tabs as the additional tabs do not significantly reduce the cell resistance. The two-tab design is concluded to be the best choice for an 18650 power cell considering the process ability and overall high-rate performance. The difference in the waste power between the center-tab and the traditional designs, which is transformed into heat, is the main reason for the poor high-rate cycling performance as expected. Such modeling provides a quick design reference for a power cell with new size to get the most suitable electrode design.     

膜片联轴器的强度与刚度分析

膜片联轴器具有许多其它类型的联轴器所不具备的良好性能,它主要由两个半联轴器和几组膜片组成。本文将根据膜片联轴器的受力状况,对其进行应力分析和刚度分析。     

平底摆动从动件等宽圆弧凸轮机构运动分析

采用高副低的方法,首次对平底摆动从动件等宽圆弧凸轮机构进行运动分析。     

机械设计专家系统的实现

专家系统(ES)技术是实现计算机集成制造系统(CIMS)的重要基础技术之一。本文从机械设计专家系统研究现状入手,分析了设计类专家系统的特点及困难;探讨了有关设计类专家系统的选题问题;介绍了我们CAD中心智能科研小组研制的八个专家系统的特点;最后,讨论了ES技术在机械设计中应用的研究方向。     

Excel 2007数据输入时几种特殊情况的解决方法

Excel具有强大的数据处理能力,在日常办公中得到了广泛的应用。本文介绍了在行政办公中使用EXCEL2007在输入数据时经常遇到又比较特殊的几种情况,并介绍了相应的解决方法。     

仿昆飞行机器人的研究

通过拍翅运动实现飞行和控制的仿昆飞行机器人研究,是机器人领域备受关注的前沿课题。在目前仿昆飞行机器人相关研究基础上,对研究中所面临的空气动力学基础、仿昆翅、动力系统以及通信控制系统等关键技术问题进行了分析。     

启发式教学法在《Word制表》中的运用

启发式教育,可以调动学生思维,激发其学习热情,培养其独立思考能力,促进他们的个性发展。本文主要阐述了在《Word制表》教学中实施启发式教学法使课堂得到事半功倍效果的教学个案。     

机械可靠性分析方法评述

对目前机械可靠性分析方法进行了全面评述 ,以求更为合理地对现有的各类可靠性分析方法进行分类 ,并指出各类分析方法的特点、局限性以及适用范围。为可靠性工作者展示行之有效的分析方法和选用依据。