ASP．NET2．0中数据验证控件的应用

本文针对ASP．NET中几种常用的数据验证控件的使用方法进行比较和总结,并结合实例介绍了在ASP．NET中页面中几种据验证控件的组合应用使用。     

运用ASP.NET的数据模板控件开发数据报表

在ASP.NET中,无须使用第三方控件,直接使用数据模板控件即可实现Web报表,本文通过一个报表案例阐述了这种方法的原理、页面设计和代码实现过程。     

ASP.NET页面向Silverlight控件传递数据研究

在ASPNET Web应用程序中使用Silverlight时,往往需要把Silverlight控件嵌入到页面中,就像SharePoint实现的那样。比如当需要在Silverlight控件中显示数据表格,而应用架构又不允许Silverlight控件直接访问数据库时,实现ASP.NET页面向Silverlight控件传递数据的功能就显得尤为重要了。对此进行了研究。     

浅析ASP．NET页面间传值的几种方式

随着计算机网络的普及,的静态网页早已经不能满足用户日益增长的需求。静态网页只能实现页面信息的显示,无法实现与用户之间进行交互的功能,网站的功能非常单一,为此动态网页应运而生。．NET Framework是微软推出的一个用于Web开发的全新框架,而ASP．NET技术是基于．NETFmmework框架的,ASP．NET以诸多的特性而深受Web程序员的青睐,是至今为止运用最广泛的实现动态网页的技术。网页中各个页面间值的传递是最为常见,本文讲解了．NET几种常见的页面间值的传递方式。     

基于ASP．NET和OWC组件的Web图表实现

图表是将数据直观形象地呈现在Web页面中的一种形式,OWC是与MicrosoftOffice一起安装的一纽Ac—tiveX控件。基于ASP．NET平台,在网站中引用OWC组件完成图表的创建,在实际使用中达到了较好的效果。     

ASP．NET DropDownList控件的研究与应用

随着互联网技术的快速发展,出现了大量的基于Web应用程序。ASP．NET是当前开发Web网络应用系统的主流技术之一。在开发实际的Web用户界面时,要用到多种用户数据输入控件,DropDownList就是最常用的控件之一。概述了ASP．NET技术以及DropDownList控件特性,结合实例对DropDownList控件应用进行了探讨,阐述了DropDownList控件的动态绑定数据库、联动功能、自动刷新问题的解决以及可输入选项的实现方法,对于开发Web应用系统有较高的实用价值。     

ASP.NET数据验证机制研究

数据验证是Web程序设计的重要环节,本文针对ASP.NET中验证控件的使用方法进行详细阐述,并结合实例说明在ASP.NET中数据验证的方便性与灵活性.     

基于Cookie的复杂数据类型在信息系统中研究

通过实例给出常见的页面传值方法,分析它们的优缺点。同时指出在ASP.NET平台下采用Cookie方法传递复杂数据类型时存在的不足。通过改造Cookie传递参数方法,提出ASP.NET平台下Cookie传递参数的新方法。本文的研究是对基于ASP.NET平台的Cookie传递参数进一步完善,有助于开发出高性能B/S动态Web应用程序。     

ASP.NET 2.0导航控件的用法

网站的导航功能是给浏览该网站的用户起一个指示的作用,让用户能清楚了解网站结构和当前所处页面,并能快速在各Web页间进行切换。ASP.NET2.0提供了三个导航控件S,iteMapPath、TreeView、Menu,主要介绍了站点地图和三个导航控件的用法和区别。     

移动Web应用程序

介绍ASP.NET移动控件添加到ASP.NET Web窗体的扩展过程。ASP.NET为移动设备提供的Web应用程序模型与为面向桌面浏览器的ASP.NET应用程序提供的模型一样丰富。     

Students' Reactions to the Introduction of Videoconferencing for Classroom Instruction

This study examined how students who had no prior experience with videoconferencing would react to the use of videoconferencing as an instructional medium. Students enrolled in seven different courses completed a questionnaire at the beginning of the semester and again at the end of the semester. Students at the origination and remote sites did not differ in their reactions toward videoconferencing but there was a significant difference for gender. Women reacted less favorably to videoconferencing. Compared to the beginning of the semester, students reported significantly less positive attitudes toward taking a course through videoconferencing at the end of the semester. There were no significant differences in students' attitudes toward videoconferencing across courses at the beginning of the semester but there were significant differences across the courses at the end of the semester. The results suggest the need for better preparation for both students and instructors.     

Cooler temperatures inductive to locust outbreaks

Ajoint study by Prof. ZHANG Zhibin from the CAS Institute of Zoology and his co-workers from Norway, US and Swiss have indicated that historical outbreaks of migratory locusts in China were associated with cold spells, suggesting that China＇s projected climate warming could decrease the pest＇s numbers. The study was published in Proceedings of theNational Academy of Sciences on 17 September, 2007.     

Exploring Multiplexity: Social Network Structures in a Computer-Supported Distance Learning Class

A computer-mediated group is a complex entity whose members exchange many types of information via multiple means of communication in pursuit of goals specific to their environment. Over time, they coordinate technical features of media with locally enacted use to achieve a viable working arrangement. To explore this complex interaction, a case study is presented of the social networks of interactions and media use among members of a class of computer-supported distance learners. Results show how group structures associated with project teams dominated who communicated with whom, about what, and via which media over the term, and how media came to occupy their own communication niches: Webboard for diffuse class-wide communication; Internet Relay Chat more to named others but still for general communication across the class; and e-mail primarily for intrateam communication. Face-to-face interaction, occurring only during a short on-campus session, appears to have had a catalytic effect on social and emotional exchanges. Results suggest the need to structure exchanges to balance class-wide sharing of ideas with subgroup interactions that facilitate project completion, and to provide media that support these two modes of interaction.     

The Role of Intermediating Institutions in the Diffusion of Electronic Data Interchange (EDI): How Industry Associations Intervened in Denmark, Finland, and Hong Kong

Electronic data interchange (EDI) provides means for interorganizational communication, creates network externalities, requires an advanced information technology (IT) infrastructure, and relies on standards. In the diffusion of such innovations, institutional involvement is imperative. Such institutions contain governmental agencies, national and global standardization organizations, local government, and nonprofit private organizations like industry associations. The last type of organizations we call intermediating institutions. They intermediate or coordinate ("inscribe") the activities of a group of would-be adopters. Unfortunately, little is known of how these organizations shape the EDI diffusion trajectory. In this article we examine one specific type of intermediating organizations?industry associations?and how they advanced the EDI diffusion process in the grocery sectors of Hong Kong, Denmark and Finland. We identify six institutional measures, placed into a matrix formed by the mode of involvement (influence vs. regulation) and the type of diffusion force (supply push vs. demand pull), that can be mobilized to further the EDI diffusion. Industry associations were found to be active users of all these measures to varying degrees. Their role was critical especially in knowledge building, knowledge deployment, and standard setting. Furthermore, institutional involvement varied due to policy and cultural contingencies and power dependencies.     

How Electronic Publishers are Protecting Against Piracy: Doubts About Technical Systems of Protection

The increasing prospects of digital piracy has prompted the perceived need by electronic publishers to adopt technical systems of protection, and governments to reform their copyright laws. This article is a preliminary study of the management of intellectual property by electronic publishers, defined as those involved in the production of online databases, and CD-ROMs. It focuses on three main issues: (1) how electronic publishers view the increasing threat of piracy; (2) the methods of protection employed to protect intellectual property in digital format; and (3) the importance of technological protection of intellectual property in electronic publications. The analysis is based on a sample of 23 UK electronic publishers. The interviews revealed an interesting assortment of protection methods and did not show that technological protection was a preferred way. Instead, the means of protection, in addition to copyright law, comprised niche markets, pricing, trust, bad publicity, and nontechnical and technical means.     

Rough Justice: A Statistical Assessment of ICANN's Uniform Dispute Resolution Policy

Long-standing conflict between domain name registrants and trademark holders prompted the Internet Corporation for Assigned Names and Numbers (ICANN) to create a global, mandatory arbitration procedure known as the Uniform Dispute Resolution Policy (UDRP). The UDRP has been used in 2166 cases involving 3938 domain names as of 1 November 2000. The policy gives the initiator of a complaint, generally a trademark holder, the right to choose which ICANN-accredited dispute resolution service provider (RSP) will handle the case. During the preparation of the UDRP,some feared that complainant selection would lead to "forum shopping" that might bias the results. This article performs a statistical assessment of the forum-shopping thesis and finds support for it. There are statistically significant differences in the various RSPs' propensity to take away names from defendants; there are also major differences in the number of cases brought to each RSP. RSPs who take away names have the larger share of cases. The study examines other variables that might explain differences in market share, such as price, the plaintiff's nationality, or the time taken to decide a case. It finds that nationality and time also are correlated with market share. The study concludes that shopping for a favorable outcome is an important factor in the UDRP.     

Prevalence of soft neurological signs in Chinese people

Prof. Raymond C.K. Chen, a neuropsychologist with the CAS Institute of Psychology, has made novel progress in his studies of schizophrenia. His work has been reported by a recent issue of Behavioural Neurology.     

Monoculture Rubber Plantations Have Negative Ef ects on Controlling Splash Erosion

<正>In Xishuangbanna,one of China’s most biodiverse regions,landscape has changed dramatically during the past three decades due to the conversion of tropical rainforest to rubber plantations.In steep areas,terraces are often constructed before planting rubber trees,which causes two important changes in the soil:the destabilization of soil in the bench terraces and the increased vulnerability of unvegetated riser faces to erosion.Few studies have documented the nature and intensity of erosion on bench terraces.Prof.LIU Wenjie and his colleagues from the Xishuangbanna Tropical Botanical Garden(XTBG)conducted a study in Menglun County(21°5′39″N,101°15′55″E),Xishuangbanna to evaluate the influence     

Chinese Scientists Use Earth Observation Technologies to Study and Protect Wild Camels

<正>Chinese scientists plan to apply Earth Observation technologies to protect the critically endangered wild camels(Camelus ferus).With the help of remote sensing,satellite positioning,geographical information system and wireless sensors networks,they will be able to access the distribution and population of the wild camels and protect their habitats.The project will be carried out by the International Research Center for Wild Camel Conservation,which was jointly established earlier this year by the Institute of Remote Sensing and Digital Earth(RADI)of the Chinese     

More than Skin Deep – Understand Skin Biology by Means of Dermatogenomics

<正>The Paul Gerson Unna Research Group on Dermatogenomics was founded in October 2012 at the Partner Institute for Computational Biology.The ultimate goal of the group is to understand the biology of skin and skin appendages.