Computer-based reading and writing across the curriculum: Two case studies of L2 writers

Since the early 1980s, second language (L2) writing specialists have been examining possible roles for computers in L2 writing instruction. How, and to what extent, L2 students use computer for academic literacy purposes beyond the writing classroom, that is, across the curriculum, has not received much attention. Because a common goal of L2 college level writing courses is to prepare students to write in these other domains, an awareness of computer-based literacy activities in non-L2 writing courses is essential to the cause of helping L2 writing instructors connect what students learn in their courses to how they write (and read) in other courses. This paper describes research aimed at contributing to such awareness: a qualitative study of the computer-based reading and writing activity of two undergraduate English as a Second Language (ESL) students beyond ESL writing courses.     

Computer-mediated communication and the linking of students, text, and author on an ESL writing course listserv

This paper addresses an issue of interest to many first- (L1) and second-language (L2) writing theorists and teachers: the role(s) that computer-mediated communication (CMC) can play in making writing instruction more effective and more meaningful, particularly in the highly technological early years of the twenty-first century. This paper explores the use of CMC in the form of a writing course listserv on which L2 students and the author of an assigned novel interacted in an effort to strengthen students’ reading of and writing about the novel. Examples of the interaction between the novel's author and the students are presented and analyzed relative to the ways in which this interaction was intended to help students asynchronously construct understanding that could then inform their writing about the literary text.     

Robust stabilization of nonlinear plants—an L2 approach

This paper extends the theory of H_∞ control for linear plants to input affine nonlinear plants without special output structure. This result is used to develop solutions to the robust stabilization problem for several classes of uncertain nonlinear plants.     

L(2, 1)-labellings for direct products of a triangle and a cycle

An L(2, 1)-labelling of a graph G is a vertex labelling such that the difference of the labels of any two adjacent vertices is at least 2 and that of any two vertices of distance 2 is at least 1. The minimum span of all L(2, 1)-labellings of G is the λ-number of G and denoted by λ(G). Lin and Lam computed λ(G) for a direct product G=K _m ×P _n of a complete graph K _m and a path P _n . This is a natural lower bound of λ(K _m ×C _n ) for a cycle C _n . They also proved that when n≡ 0±od 5m, this bound is the exact value of λ(K _m ×C _n ) and computed the value when n=3, 5, 6. In this article, we compute the λ-number of G, where G is the direct product K ₃×C _n of the triangle and a cycle C _n for all the other n. In fact, we show that among these n, λ(K ₃×C _n )=7 for all n≠7, 11 and λ(K ₃×C _n )=8 when n=7, 11.     

Challenge and solutions of NAT traversal for ubiquitous and pervasive applications on the Internet

Network Address Translator (NAT) has brought up many changes and opportunities to the Internet. How do the ubiquitous and pervasive applications coexist with NAT and interoperate with each other? In this article, we discuss the essence of NAT sensitive applications as well as the challenge and response for various NAT traversal solutions. All questions pointed to redesign a new NAT framework with a major change to accommodate NAT problems all at once. We introduce a novel next generation NAT (NATng) framework, which consists of a Bi-directional NAT (BNAT) and a Domain Name System Application Level Gateway (DNS_ALG) with a Border Network Address Translator Control Protocol (BNATCP) function to control all BNATs. The above components coordinate and provide bidirectional access capability between intranet and Internet, so all private hosts can be addressed via Fully Qualified Domain Name (FQDN). Logistically, NATng extends the IPv4 address space from or even more. It features high potential to solve the problems for ubiquitous and pervasive applications which may encounter IPv4 address exhaustion on the current Internet.     

基于信道质量预测的L2-Trigger触发方法研究

为了使移动IP可满足实时应用,有文献提出采用二层触发器的方法提前触发三层切换,但是却未能提出明确可行的触发方法,文章通过对移动节点切换过程中信道质量的变换的研究,提出了基于信道质量预测的触发方案,并且通过计算机仿真进行了验证。     

基于(2D)2-KL变换的小波域图像融合算法

为使融合后的图像在尽可能保留源图像细节信息的同时,还能够有效提高源图像的对比度,提出基于(2D)2-KL((2D)2-Karhunen-Loeve)变换的小波域图像融合算法.首先用(2D) 2-KL变换直接对图像信息进行分析,并构建协方差阵,提取图像的重要特征,然后将其主要特征输入到小波域中.在此基础上,对小波变换分解得到各子带系数,用一定的融合策略进行融合.低频子带含有图像的轮廓信息,引入加权因子指导低频子带系数进行融合.实验结果表明,提出的算法有效提高了图像的对比度,并且很好地保留了图像的细节信息,无论在视觉角度上,还是在各种客观性能评价上都比其它传统方法取得了更佳的融合效果.     

基于L2TP无线局域网安全解决方案

为了使读者更加了解无线局域网L2TP隧道认证机制的工作原理,在无线局域网环境中部署L2TP的,方法是：LAC（L2TP访问集中器L2TP Access Concentrator）放置在与无线网络连接的PC上,LNS（L2TP网络服务器L2TP Network Server）放置在有线内部网内,用户则需要自己建立L2TP通道,同时也介绍了L2TP隧道认证在实际的运行环境中的运行情况,根据实验详细分析了L2TP认证机制原理,最后提出了基于L2TP协议的无线局域网安全解决方案。     

基于三层交换的校园网设计与建设

对民办高校的校园网络进行相关研究后,从传统的交换与路由入手,介绍了传统的二层交换技术和路由技术与现代三层交换技术的区别,结合SDYC学院的校园网建设介绍了三层交换技术在现代校园网建设中的应用方法。     

基于三层交换的校园网设计与建设

对民办高校的校园网络进行相关研究后，从传统的交换与路由入手．介绍了传统的二层交换技术和路由技术与现代三层交换技术的区别，结合SDYC学院的校园网建设介绍了三层交换技术在现代校园网建设中的应用方法。     

基于L2TP和IPSec集成的车载无线终端传输网络设计

在应对突发事件救援行动中,指挥中心能否通过互联网取得第一手资料,必要的条件是存在一个安全的连接。虚拟专用网(VPN)是应急现场组织、指挥的重要通信手段。但是,如果车载无线移动终端移动,由于IP的变化,安全连接将会消失,新的连接将会重新建立,造成应急现场与指挥中心之间通信不流畅。为克服以上不足,详细阐述了由L2TP和IPSec集成的一种新颖的隧道网络过程,并介绍了L2TP和IPSec的集成方案,最后完成了对本方案的测试。     

基于V4L2的视频驱动程序设计与实现

阐述了Linux设备驱动程序开发方法,介绍了V4L2驱动模型。以此为基础,在TMS320DM355开发平台下,研究开发TMS320DM355的视频前端模块(VPFE)的驱动,实现了对日立摄像头DI-SC110的支持。基于V4L2的视频采集程序验证了驱动的正确性。提出了基于V4L2的视频驱动程序开发一般方法。     

基于MapX桥梁数字化管养系统中电子地图的开发

组件式GIS开发是当前地理信息系统学界研究的热点。文中主要介绍了利用MapX控件,结合面向对象的可视化编程语言VC++开发电子地图的基本方法。     

XML在J2EE中的应用研究

在J2EE架构中集成XML技术是强大商务系统架构同灵活的数据管理方案的结合。文章通过分析J2EE架构的结构,讨论了J2EE架构中XML技术在数据描述和交换、数据显示以及面向消息的分布式计算等方面的应用。     

TiO_2-V_2O_5-K_2O系湿敏陶瓷材料的改性研究

研究了添加正硅酸酯[Si(OC_2H_s)_4]对TiO_2-V-2O_5-K_2O(Na_2O)湿敏陶瓷材料性能的影响.结果表明:材料是以金红石型TiO_2为主相,粒界生成含K~+(Na~+)离子的硅玻璃相.其中添加聚合度为3.0或2.5的Si(OC_2H_5)_4,经900℃烧结2h的材料具有较完善的微结构、较高的湿度灵敏度和稳定性.     

教育知识管理视域下的教师专业化发展

学校是知识的源生地,教育本身是一个知识管理领域,教师是学校的灵魂,因此将教育知识管理的理念与方法引入到教师专业化发展中,对教师的专业成长具有重要的现实意义。此研究主要讨论如何将教育知识管理的理念与方法融入到教师的专业化发展中,在此基础上提出教师专业化发展的对策,尤其是学习型组织的构建,对教师的专业化发展具有增智、增能的作用。     

The role of the internet in business-to-business network transformations: a novel case and theoretical analysis

It is widely accepted that the development of electronic commerce and Internet technology has lead to various new opportunities to transform the nature of business-to-business networks, for instance through disinter-mediation, reintermediation and formation of virtual enterprises. However, discussions of the role of the Internet in such transformations in the electronic commerce literature have predominantly focused on the potential of the Internet to reduce transaction costs, particularly search costs. It is now recognised within the strategic management literature that factors other than transaction costs, largely ignored in electronic commerce literature, are important in shaping business-to-business networks. Therefore, this paper seeks to uncover new roles that the Internet can play in the strategic choices for organisations wishing to utilise electronic commerce and Internet technologies. It does this through detailed analysis of the strategic choices of an actual case company, one of which involves Internet-enabled distributed manufacturing, using three widely known theories of strategic choice: Transaction Cost Economics, the Resource-Based View, and Network Theory. Our analysis shows that in addition to its impact on transaction costs, the Internet can also impact on asset specificity of transactions, the imitability of resources, knowledge sharing in relationship management, and the scalability of business strategies. The contribution of this paper is to articulate several novel research propositions concerning the potential of the Internet in the transformation of business-to-business networks.     

N(2)-乙酰基-9-[(2-乙酰氧乙氧基)甲基]鸟嘌呤的制备工艺条件的研究

人工神经网络由于其具有较好的自组织,自学习,多输入,多输出的能力,在预测方面已取得了广泛应用,本文将BP人工神经网络应用于N（2）－乙酰基－9－[2(2-乙酰氧乙氧基）甲基鸟嘌令的制备工艺条件快速 准确地确定工艺影响参数及其范围的问题。     

Pearson x^2检验在计算机自适应化测验中的应用研究

计算机化自应用测验（CAT）使用项目反应理论（IRT）,通过观察被试在项目上的反应,将能力和项目参数的关系用数学模型表达出来。如何有效地估计被试的能力,是计算机化自适应测验的一个关键问题。本文首先论述了Berkson的最小化x^2方法,但使用该方法的前提是已知被试的能力,且运用了Pearson x^2检验的思想。接着指出该方法中存在的缺陷,进而提出了一种新的解决方案,该新方案可弥补Berkson的最小化x^2方法的不足之处,可以作为该方法的一个改进。本文的研究表明,新的方案比Berkson的最小化x^2方法具有更加科学的解释能力。