.Net+SQL Server图像存取的研究与实现

图像是管理信息系统中必不可少的数据,这类大容量数据的存取方式和普通数据有很大的区别。本文主要研究图像在SQL Server数据库中的存取方法。通过存取方法的研究,减少代码、简化算法、降低磁盘读写频率,提高执行效率。     

Changes in college students' perceptions of use of web-based resources for academic tasks with Wikipedia projects: a preliminary exploration

Motivated by the need to facilitate Net Generation students' information literacy (IL), or more specifically, to promote student understanding of legitimate, effective use of Web-based resources, this exploratory study investigated how analyzing, writing, posting, and monitoring Wikipedia entries might help students develop critical perspectives related to the legitimacy of Wikipedia and other publicly accessible Web-based resources for academic tasks. Results of survey and interview data analyses from two undergraduate courses indicated that undergraduate students typically prefer using publicly accessible Web-based resources to traditional academic resources, such as scholarly journal articles and books both in print and digital form; furthermore, they view the former as helpful academic tools with various utilities. Results also suggest that the Wikipedia activity, integrated into regular course curriculum, led students to gain knowledge about processes of Web-based information creation, become more critical of information on the Web, and evaluate the use of publicly accessible Web-based resources for academic purposes. Such changes appear more conspicuous with first year than with upper division students. The findings suggest that experiential opportunities to grapple with the validity of publicly accessible Web-based resources may prepare students better for their college and professional careers. The study results also indicate the need for integrating multiple existing frameworks for IL into one comprehensive framework to better understand various aspects of students' knowledge, use, and production of information from cognitive and technical perspectives and for a variety of purposes.     

GridView控件批量更新方法的改进研究与实现

在B/S结构软件开发过程中,经常会遇到批量插入、修改、删除数据的情况。但Visu-al Studio C#.Net GridView控件一般一次只能更新一行数据。为了优化GridView控件的数据更新功能,本文对GridView控件的批量更新方法进行了研究,给出了GridView控件通用批量更新方法的改进措施,并阐述了设计思想。     

It's All About Me: The User-Centered Approach as a Solution to the Challenges Posed by Information Literacy Instruction

The Future Voices in Public Services column is a forum for students in graduate library and information science programs to discuss key issues they see in academic library public services, to envision what they feel librarians in public service have to offer to academia, to tell us of their visions for the profession, or to tell us of research that is going on in library schools. We hope to provide fresh perspectives from those entering our field, in both the United States and other countries. Interested faculty of graduate library and information science programs, who would like their students’ ideas represented in these pages, are invited to contact Nancy H. Dewald at nxd7@psu.edu

Samantha Sinanan is an MLIS candidate in the School of Library, Archival and Information Studies at the University of British Columbia, Vancouver, BC, Canada. Here she proposes that librarians should seek to understand the Net Generation searcher's perspective in order to teach information literacy most effectively.

Accredited by the American Library Association with the Canadian Library Association, SLAIS is an internationally recognized graduate school at The University of British Columbia, in beautiful Vancouver. At SLAIS we are in the business of preparing professionals to exercise leadership in planning, implementing, and promoting the preservation, organization, and effective use of society's recorded information and ideas. We offer the master's degree in Library and Information Studies (MLIS) and the master's degree in Archival Studies (MAS). In addition, we sponsor a multidisciplinary Master of Arts in Children's Literature (MACL) with five other departments. Opportunities are also available for post-master's study, including a Ph.D. program in library, archival & information studies. For more information, visit www.slais.ubc.ca     

Reaching Out to the Net Generation on Campus

Abstract

The tremendous expansion of online information sources has prompted academic librarians to increase their outreach to undergraduates of the “Net Generation” in an effort to more effectively promote their libraries' resources to these students. Such outreach programs involve identifying library resources that support the information-seeking behaviors of Net Generation undergraduates, as well as establishing collaborative relationships with the individuals and groups affiliated with these students. This article describes an outreach initiative conducted by the Reference Department at the Mississippi State University Libraries, in which the Department worked with staff in residence halls to target undergraduates living on campus.     

农学专业植物病理学教学中存在的问题与建议

本文以江西农业大学为例,对农学专业的植物病理学在理论教学、实验教学以及实习教学过程中存在的一些问题进行简要阐述,并结合实际教学情况提出相关教学建议。     

IT类专业学院实验室硬件投资效益实证分析

该文为分析教育信息化投资效益,提出了基于净现值法和年限折旧法的分析方法,设计了货币计量的投资效益定量估算方法。以某本科院校IT类专业实验室硬件的建设项目为例,实证分析了该学院实验室硬件的投资"成本"和"效益",根据估算结果讨论了该投资的价值。分析表明,该投资的净现值为负,设备利用率以及设备效益的充分发挥均有改进的空间。     

基于zigbee技术的开放实验室信息化管理系统

旨在设计和开发出基于zigbee无线收发技术的开放实验室信息化管理系统,以满足高校内部开放实验室的管理和考勤的需要.该系统由3个子系统组成,集实验预约、信息查询、实验记录考勤、实验台电源控制等功能于一体,涉及到zigbee技术、Net编程、数据库管理等多个领域.它采用zigbee星状拓扑结构以及客户端/服务器机制,在避免了有线数据传输带来的布线困难等问题的同时,增强了系统的可操作性,并在一定程度上实现了实验室管理的无人化、智能化.     

NIC Express v4.0双网卡绑定实现以太网设备冗余的安装、配置与测试

服务器作为计算机网络信息平台的核心,稳定性、安全性和网络带宽至关重要.采用双网卡绑定是提高服务器网络链路(网卡、网线、交换机)热备份冗余、保障服务器链路通畅、降低故障率的重要技术方案.本文详尽分析了双网卡绑定软件NIC Express Enterprise Edition v4.0的安装与配置,并进行了网络传输速率的测试.     

自适应神经元PID控制器的设计

神经网络是单个并行处理元素的集合,可以通过改变连接点的权重来训练神经网络完成特定的功能.本文利用神经网络的模型,根据一般BP神经网络的设计原则,在传统的PID控制器的设计基础上,介绍了自适应神经元PID控制器的设计过程,与传统的PID控制器进行了比较,并进行了实验的仿真.