SQL数据库操作中的常用C~#语句

将常用到的、针对SQL数据库操作的C#语句进行汇集和讨论,便于相关人员参考。基于.Net平台下某软件的开发,测试这些代码的实用性和延伸性。实践证明,给出的代码可以成功地操作SQL数据库。测试表明,代码可结合具体的解决方案进行合理更改并使用。     

使用ADO.NET技术轻松访问数据库

该文描述了ADO.NET数据库访问结构、特点和方法。提出了在.Net环境下使用一种新的开发语言C#结合ADO.NET数据访问模型来开发数据库系统,并编写了一个完整的自定义数据库访问的类,该类编译成为动态连接库文件,可以在编写程序时直接调用,大大简化了开发过程。     

银行业务管理系统的设计与实现

文章采用Visual Studio 2005（简称VS2005）中的C#语言及VS2005中自带的数据库服务模型SQL Server Express Edition作为开发工具,实现了具有开户、销户、存款、取款等功能的银行业务管理系统。该系统的创建过程主要包括后台数据库的建立和前端应用程序的开发两方面,界面友好、易操作。     

Excel技术在大学生创新项目管理中的应用

在进行管理信息系统开发时往往有很多数据形式的报表需要制作,但报表一般不能形成单独的文件进行存储,更不能进行必要的修改。利用C#调用NPOI组件生成并控制Excel文档的操作,并在C#.NET平台上利用ADO.NET连接SQL Server数据库,使用SQL语句对数据进行操作,进而生成所需要的Excel报表文件,从而可以很好地制成信息系统所需要的报表,便于资料的存储及必要的修改。     

高职院校.NET课程实训教学研究

高职院校开设的.NET课程主要包含C#程序设计基础、使用C#开发数据库应用程序、ASP.NET、.NET企业级应用开发等,上述课程需结合一定的实训教学,让学生不仅掌握相关的理论知识,并能强化相应的实践操作能力。分析了高职院校.NET课程的教学现状,提出了.NET课程实训教学的依据以及实施条件,以《使用C#开发数据库应用程序》课程为例,阐述了实训教学的具体实施,并对教学效果进行了分析。     

在C#.net编程过程中的常用技巧

C#.NET是微软开发的一种面向对象的编程语言,是微软.NET开发环境的重要组成部分,列举了四个C#.NET编程中的常用操作技巧。     

基于COM技术的通用数据访问组件开发与实现

C#是.NET平台下的一种优秀的开发语言,ADO.NET是新一代数据库访问技术,利用C#与ADO.NET编程将访问各数据库的通用基本操作封装成DLL组件的形式,以提高代码的重用度,使程序简洁,运行时占用内存少,具有一定的实践意义。     

基于C#的高校排课管理系统的设计与实现

以高校课表编排工作为背景,介绍了基于C#的高校排课管理系统的开发过程.使用微软Visual Studio.Net下的C#语言作为开发平台,Access作为后台数据库.采用了回溯算法,并结合高复杂度优先的思路解决课程安排时出现的冲突问题.     

基于C#和XML数据库的工序卡生成与管理系统设计和开发

工序卡是车间生产现场加工的重要指导文件,其方便、有效的生成与管理是车间信息化的重要环节。本文利用C#语言和XML数据库设计和开发了一个简易型工序卡管理系统,通过对工序卡XML数据库的添加、删除、修改等编辑工作,完成了工序、工步的计算机辅助设计和工序卡的自动生成。系统操作方便、简捷,提高了设计质量,缩短了设计时间。     

浅谈医疗健康监护管理系统

医疗监护管理系统以C#作为开发工具,在Windows XP操作系统下,借助Visual Studio强大的界面设计功能而设计的一套高效、准确、结构化的医疗健康监护系统。本系统主要由使用C#.NET C#.Visual Studio2008以及SQL SEVER 2008开发的数据库实现对数据库的存取,基于Zigbee搭建的无线传输网络,包括网关、路由,负责将数据传输至监护部分,再由监护部分(后台管理平台)进行信息分析。     

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.