一种新型的WiMAX网络控制框架研究

提出一个安全和面向服务的WiMAX网络控制框架,主要目的是在保证安全性的同时尽量满足WiMAX网络应用的潜在需求.该框架包含了两个重要的组成部分:服务感知控制框架与统一路由机制.此外,还探讨了若干对此框架非常重要的关键技术,从而为设计一个更安全、更切合实际应用的WiMAX网络提供一些参考.     

浅谈计算机网络在教学中的应用

随着Internet的发展，普及，越来越多的学校组建了网络老家，在校园内实现了教学资源的共享，为教师的教学和学生的学习提供了充足的网上教学资源，从而真正实现了网上辅导，答疑，自学，作业发布，批阅等。     

A Framework for Evaluating and Planning Assessments Intended to Improve Student Achievement

Assessments labeled as formative have been offered as a means to improve student achievement. But labels can be a powerful way to miscommunicate. For an assessment use to be appropriately labeled formative, both empirical evidence and reasoned arguments must be offered to support the claim that improvements in student achievement can be linked to the use of assessment information. Our goal in this article is to support the construction of such an argument by offering a framework within which to consider evidence-based claims that assessment information can be used to improve student achievement. We describe this framework and then illustrate its use with an example of one-on-one tutoring. Finally, we explore the framework's implications for understanding when the use of assessment information is likely to improve student achievement and for advising test developers on how to develop assessments that are intended to offer information that can be used to improve student achievement.     

Using Computer Networks

Two different kinds of communication which can be helped by computers are described here by Andrew Fluck, director of the Redbridge Special Education Microelectronics Resource Centre (SEMERC) in Essex. Both are being increasingly used with children who have special educational needs and have potential for changing styles of living and education.     

计算机网络综合练习

】 填空题 (1)计算机网络=__—+——。 (2)根据网络的地理覆盖范围进行分类,计算机网络可以分为以下三大类型:一——,MAN和～() (3)网络具有以下拓扑结构类型,分别是 、 、 以及树型和网状型。 (4)TCP/IP的中文名称是 ,英文全称是 。 (5)SMrrP的中文名称是 ,英文全称是——....—O (6)ISo组织的中文名称是 ,英文全称是 。 (7)ICMP的中文名称是 ,英文全称是一0(8)IGMP的中文名称是——0(9)UDP的中文名称是,英文全称是,英文全称是——0(10)面向连接服务的三个过程是 和 (11)防止高速的发送方的数据“淹没”低速的接收方数据的功能,…     

Ethical Challenges for Student Design Projects in Health Care Settings in New Zealand

Student‐led design projects undertaken within healthcare settings raise considerable ethical challenges, primarily resulting from collaboration with service users. This article emerged out of the experiences of design from a New Zealand university undertaking real world projects in acute health care contexts. A human‐centred approach to design is underpinned by a requirement for students to immerse themselves in the user context to optimise design outcomes. Several issues exist in relation to the management of the ethical complexities arising from these projects. Multiple formal ethical review processes were triggered when students’ projects were defined as research. These processes were perceived as onerous and disproportionate to the scale of the projects, and students were ill equipped to identify ethical issues and engage with formal review processes. This resulted in either abandoned projects or the use of compromised methods. A review of codes of practice and design industry approaches identifies a gap in guidance for both students and qualified designers. Some designers describe their projects as service improvement, and not subject to formal ethical review. This article argues for embedding consideration of ethics in all design projects to enhance the process, to be true to the underpinning philosophy of human centred design and to produce ethically aware graduates. To achieve this, a multi‐pronged pedagogical approach which encompasses both hypothetical, class‐based and real‐world learning experiences is described, with the ultimate goal of normalising the consideration and development of ethical standards for students and best practice across the industry.     

计算机网络复习指南

1 课程特点 作为一门教学课程,每一门课程都有“共性”和“个性”。“共性”就是每一门课程首先都会讲解一些对学员来说是新概念、新术语、新名词、定理、思路、结论;其次是有关实现的方法、技巧、算法、评述等;而“个性”才是课程具体学科领域内容,学员通过听讲、自学、联想、对比和归纳,更重要的是通过安排的实验或实践训练掌握本课程所要求的技能。 本课程是以目前常用的网络操作系统（例如:美国Novell公司的NetWare、美国微软（MicroSoft）公司的Windows NT和通用多用户计算机操作系统UNIX（或Linux）等普遍使用的网络操作系统）和各种类型组网技术为知识点,将技能训练实践穿插在有关知识包中,宏观上展示计算机网络的整体结构,讲解原理性概念、名词和术语,微观上插入有层次的组网应用技术和实用的网络管理技术等。     

SIMD计算机单级互连网络的模拟

对两种典型的单级互连网络———PM 2I网络和立方体网络进行了模拟 ,每种模拟都给出了模拟算法以及精确的上界和下界值 .这些模拟上、下界值可用来分析一个互连网络对某些具体应用场合的适应能力和连接特性 .     

Professional Development in Student Assessment for Educational Administrators: An Instructional Framework

What assessment tasks do administrators perform? What knowledge and skills do they need for these tasks? How is this information useful for professional development?     

Student Strategies for Learning Computer Programming: Implications for Pedagogy in Informatics

In the context of the debate about the extent to which secondary school Informatics curricula should include specifically vocational content, this paper explores the possibility that in Informatics teaching, there is value in adopting pedagogical approaches, rather than curriculum content, based on practice in industry and business settings. This paper reports research findings that raise questions about the widely held assumption that students will gain their programming knowledge and skills predominantly from classroom activities undertaken at the instigation of the Informatics teacher. Investigation of sources of students' information about programming skills and knowledge indicates that such an assumption is not well founded, and leads to the suggestion that innovative approaches to pedagogy in this area should be explored.Two studies, each a part of a larger project, are reported here. The first showed that a group of Grade 5 students, skilled programmers in the MicroWorlds multimedia programming environment, sought and acquired programming skills and techniques from a wide variety of sources, many of which were not classroom based. The second reports a formalisation of this model of student initiated seeking among a range of resource people for immediately needed expert advice. This was observed in a deliberately constructionist learning environment in an after-school Computer Clubhouse where students are supported by mentors with different specialist areas of expertise as well as by a teacher.The importance of these issues for Informatics teaching, assessment, course design and evaluation, and for the preparation of Informatics teachers is considered, and the need for further research in this area is outlined.     

计算机网络期末复习1

1 计算机网络导论1.1计算机网络系统的组成 应该掌握网络的拓朴结构,即包括星形结构、环状结构、树状结构、全连接结构、不规则结构这几种类型。1.2 计算机网络的组成结构 主要掌握通信子网,网络高层和网上应用的概念。 1）通信子网是用来保证整个计算机网络通信的基本传输的部分。通信子网由物理信道,信道链路的通信控制软件组成。可以向高层提供尽力而为的通信支持。 2）网络的高层服务的内容也是传输服务,即网络节点到对方的网络节点之间的端到端的完整通信服务。计算机网络高层服务的目的是要完成将网上的应用和网络的数据通信彻底分开。 3）计算机网络的应用非常广,几乎各个方面都可以应用。计算机网络应用的支撑环境主要由网络目录服务、网络域名服务、网络数据库服务所组成。1.3 网络的标准体系     

计算机网络安全技术浅析

本文在介绍计算机网络安全概述的基础上,分析了计算机网络安全威胁产生的原因及方式,提出了计算机网络安全的防范措施。     

计算机网络期末复习1

1　计算机网络导论1 1　考核要求(1)熟练掌握 :计算机网络系统的基本构成。(2 )掌握 :计算机网络提供共享的硬件、软件、信息三类资源。网络的基本拓扑结构。(3)了解 :计算机网络的发展历史 ,计算机网络和互连的技术新进展。1 2　复习内容1 2 1　计算机网络系统的组成网络的拓扑结构 ,包括星形结构、环状结构、树状结构、全连接结构、不规则结构等类型。1 2 2　计算机网络的组成结构通信子网、网络高层和网上应用的概念。(1)通信子网是用来保证整个计算机网络通信的基本传输的部分。通信子网由物理信道、信道链路的通信控制软件组成。可以…     

试析网络高等教育

网络高等教育内容主要包括：什么是网络高等教育;网络高等教育的平台既有传统高校校园网络教育平台和网络远程教育平台,也有企业或社区等创办的网络大学平台;网络高等教育的基础是计算机互联网络,关键是网络课程、教育软件等资源建设,采用的学习方式是在线学习——E-learning。从互联网的发展、从教育信息化和产业化的要求、从人们对教育的需求等各方面都可以看到网络高等教育的巨大发展空间。     

本科学员毕业论文(设计)的几点思考

为了适应海军现代发展需要 ,培养高素质的军事人才 ,结合近几年指导本科毕业论文 (设计 )的实践 ,阐述了其在人才培训中的地位和作用 ,并就学员在进行毕业论文 (设计 )过程中的选题、导师指导及论文评定等方面提出了几点建议     

地方性本科院校计算机网络的实践教学

计算机网络实践教学是提高学生实践动手能力的重要手段,构建应用型本科计算机网络实践教学体系,将实践教学应用于计算机网络课程的各个教学环节,是培养合格的计算机网络应用型人才的有效途径.针对目前计算机网络实践教学的现状和特点,从实践教学体系和教学方法的提高和改进等方面,结合地方性本科院校的实际情况,提出了一套适合各个层次学生的计算机网络实践教学方案.     

中美高校学生事务管理架构的差异与启示——以美国公立高校和中国矿业大学为例

我国高校以学生全面发展为核心的发展型学生工作模式与美国高校注重以人为本的"扁平化"组织架构相比,国内高校需注重在工作意识、工作架构、学生工作队伍等方面加以改进。提出构建以学工干部和两课教师为教育管理主体,以校院两级"一站式"学生事务大厅为服务主体的新模式,并对整个学生工作模式架构进行再设计。     

校园网升级改造的技术方案探讨

本文从发展的角度出发,坚持应用性和先进性的统一,提出校园网建设是一个持续的建设过程,论证校园网改造升级目前采用的最佳技术方案和网络设备。