可信赖的路由器——实达电脑STAR-SE4504(4+1 Internet宽带路由器)

随着校校通工程和电子政务在全国的展开,实达电脑于2003年年初推出了网络产品,同时提供“中小学校园网综合解决方案”、“大型证券营业部网络解决方案”、“大型企业网络解决方案”、“政府网络解决方案”等一系列应用解决方案。以其全面解决教     

通用网络管理系统的一种解决方案的研究

本文以西安交通大学直属党委人事评估系统为背景,探讨通用网络管理系统的解决方案,分别研究C/S结构和B/S结构的网络管理系统的系统结构、网络环境及其实现方法,分析了网络管理系统的应用特点,分别给出了一种通用网络管理系统的C/S解决方案和B/S解决方案,给出两种解决方案的特点、应用场合。     

WebJetAdmin 5.5不同凡响的打印管理软件

惠普公司近日发布了新的网络打印管理软件WebJetAdmin 5.5,这一产品是惠普公司一直倡导的网络打印解决方案的重要组成部分。惠普公司提倡的网络打印解决方案是一个整体的解决方案,包括网络激光打印机、打印服务器、打印管理软件     

推四融合方案——北电网络启动五城市巡展

7月5日～16日,北电网络在北京、上海、广州、青岛和福州等五个城市举办题为“通信变革融合为先”企业网络解决方案巡展。该巡展将通过向企业和合作伙伴全面、系统地介绍北电网络融合新技术,以帮助大型和中小企业运用融合网络解决方案来创新安全的移动远程协同办公。据北电网络大中华区企业网络总裁徐成达先生介绍,北电网络的移动和远程办公解决方案包括有总部融合解决方案、分支机构融合解决方案、应用融合解决方案和移动融合解决方案四个方面。在总部融合解决方案中,北电网络通过将高可用的网络基础设施与成熟、多功能的业务电话和其他应用…     

运营商 LTE 语音解决方案研究

LTE(Long Term Evolution)网络现已在全球迅猛发展,LTE 的语音解决方案也是 LTE 网络及终端发展中业界重点 关注的一个问题。LTE 网络是完全基于统一分组域架构的,无法提供像 3G 和 2G 那样基于电路域的语音通话,而要实 现全网 VoLTE 的语音解决方案,需要全网部署 IMS 网络,这在网络部署前期无法实现的。本文主要介绍了 LTE 网络的 各种语音解决方案,分析其优劣,并对运营商不同时期部署怎样的语音解决方案进行深入分析。     

美国康普企业解决方案部门推出创新SYSTIMAX 360解决方案

美国康普旗下的企业解决方案部门日前推出其新一代SYSTIMAX 360解决方案。借助这一全面解决方案,康普从各个角度重新定义了企业网络基础设施的性能标准。在SYSTIMAX 360创新设计理念的指导下,工艺与美学、速度与智能、铜缆与光缆在这项一体化解决方案中得到了完美的统一,从而超越了网络基础设施解决方案的原有标准。     

锐捷网络推出“简网络、云体验”2015产品及解决方案

2015年3月,中国网络解决方案品牌锐捷网络在京召开了"简网络云体验"2015产品及解决方案发布会,"简网络、云体验"被赋予了新的内涵和生命力,深入场景重塑"极简网络"带来的业务创新、扎根行业使"云体验"快速落地、以国家政策为背景让信息安全等级保护解决方案真正落实。所有这些充满创新能量的产品战略,     

2/3企业5年内移至融合网——北电谈信息化发展前景

政府信息化和企业信息化是目前中国信息化建设的重点,北电网络审时度势,为政府和企业推出了融合网络的系列解决方案,支持中国企业信息化和各省市电子政务的开展。根据Economist Intelligence Unit最近进行的全球性调查,有2/3的公司计划在未来5年内把大多数或所有业务应用转移到融合网络上。在10月份举办的2004年中国国际通信设备技术展览会上,北电网络现场展示了校园网和校园通信解决方案、针对中央办公室的多媒体通信解决方案、针对远程办公室的IP电话和视频解决方案及针对移动办公用户的无线局域网和新一代智能网络接入解决方案。融合网…     

网络视频监控系统解决方案的比较研究

网络视频监控是一项有巨大市场潜力的多媒体宽带增值业务,由于监控系统只要求单向视频流的技术特点,解决方案中可以运用的协议很多,给系统的互联互通带来极大的困难。对市场上有代表性的网络视频监控产品的典型解决方案作了简要介绍,着重分析了各种解决方案所采用的协议、具备的性能特点,适合的应用场合,提出了能够解决互联互通障碍的新的网络视频监控解决方案的系统要求。     

大型企业应该选择什么样的安全解决方案？

企业网络随着企业规模的不断扩大而变得越来越复杂,复杂的网络结构也为病毒和恶意代码的入侵创造了条件。据统计,80%的病毒是通过互联网侵入到企业网络当中的,由此可见,电子邮件是传播病毒的主要来源。因此,对于复杂的企业网络而言,如何做好互联网与内部网之间的防护就显得尤其重要,只有把好了这一关,才有可能最大化地把病毒拒之网外。那么,大型企业应该选择什么样的防护解决方案才能确保网络安然无恙呢?全球领先的入侵防护解决方案供应商网络联盟指出网关防护解决方案和入侵防护解决方案是确保企业网络的两大法宝。如果企业能够正确地使用…     

Only connect: teaching, technology and telesis

Abstract This paper describes an approach to the design of interactive multimedia materials being developed in a European Community project. The developmental process is seen as a dialogue between technologists and teachers. This dialogue is often problematic because of the differences in training, experience and culture between them. Conditions needed for fruitful dialogue are described and the generic model for learning design used in the project is explained.     

European Community policy and the market

Abstract This paper starts with some reflections on the policy considerations and priorities which are shaping European Commission (EC) research programmes. Then it attempts to position the current projects which seek to capitalise on information and communications technologies for learning in relation to these priorities and the apparent realities of the marketplace. It concludes that while there are grounds to be optimistic about the contribution EC programmes can make to the efficiency and standard of education and training, they are still too technology driven.     

一种自适应子融合集成多分类器方法

融合集成方法已经广泛应用在模式识别领域,然而一些基分类器实时性能稳定性较差,导致多分类器融合性能差,针对上述问题本文提出了一种新的基于多分类器的子融合集成分类器系统。该方法考虑在度量层融合层次之上通过对各类基多分类器进行动态选择,票数最多的类别作为融合系统中对特征向量识别的类别,构成一种新的自适应子融合集成分类器方法。实验表明,该方法比传统的分类器以及分类融合方法识别准确率明显更高,具有更好的鲁棒性。     

Avoiding semantic and temporal gaps in developing software intensive systems

Development of software intensive systems (systems) in practice involves a series of self-contained phases for the lifecycle of a system. Semantic and temporal gaps, which occur among phases and among developer disciplines within and across phases, hinder the ongoing development of a system because of the interdependencies among phases and among disciplines. Such gaps are magnified among systems that are developed at different times by different development teams, which may limit reuse of artifacts of systems development and interoperability among the systems. This article discusses such gaps and a systems development process for avoiding them.     

Designing economic np control charts: A programmed simulation approach

This paper presents control charts models and the necessary simulation software for the location of economic values of the control parameters. The simulation program is written in FORTRAN, requires only 10K of main storage, and can run on most mini and micro computers. Two models are presented - one describes the process when it is operating at full capacity and the other when the process is operating under capacity. The models allow the product quality to deteriorate to a further level before an existing out-of-control state is detected, and they can also be used in situations where no prior knowledge exists of the out-of-control causes and the resulting proportion defectives.     

The development of robot art

Going through a few examples of robot artists who are recognized worldwide, we try to analyze the deepest meaning of what is called “robot art” and the related art field definition. We also try to highlight its well-marked borders, such as kinetic sculptures, kinetic art, cyber art, and cyberpunk. A brief excursion into the importance of the context, the message, and its semiotics is also provided, case by case, together with a few hints on the history of this discipline in the light of an artistic perspective. Therefore, the aim of this article is to try to summarize the main characteristics that might classify robot art as a unique and innovative discipline, and to track down some of the principles by which a robotic artifact can or cannot be considered an art piece in terms of social, cultural, and strictly artistic interest. This work was presented in part at the 13th International Symposium on Artificial Life and Robotics, Oita, Japan, January 31–February 2, 2008     

Explanation and prediction: an architecture for default and abductive reasoning

Although there are many arguments that logic is an appropriate tool for artificial intelligence, there has been a perceived problem with the monotonicity of classical logic. This paper elaborates on the idea that reasoning should be viewed as theory formation where logic tells us the consequences of our assumptions. The two activities of predicting what is expected to be true and explaining observations are considered in a simple theory formation framework. Properties of each activity are discussed, along with a number of proposals as to what should be predicted or accepted as reasonable explanations. An architecture is proposed to combine explanation and prediction into one coherent framework. Algorithms used to implement the system as well as examples from a running implementation are given.     

Three Process Perspectives: Organizations, Teams, and People

This paper provides the author's personal views and perspectives on software process improvement. Starting with his first work on technology assessment in IBM over 20 years ago, Watts Humphrey describes the process improvement work he has been directly involved in. This includes the development of the early process assessment methods, the original design of the CMM, and the introduction of the Personal Software Process (PSP)^SM and Team Software Process (TSP){^SM}. In addition to describing the original motivation for this work, the author also reviews many of the problems he and his associates encountered and why they solved them the way they did. He also comments on the outstanding issues and likely directions for future work. Finally, this work has built on the experiences and contributions of many people. Mr. Humphrey only describes work that he was personally involved in and he names many of the key contributors. However, so many people have been involved in this work that a full list of the important participants would be impractical.     

基于复小波噪声方差显著修正的SAR图像去噪

提出了一种基于复小波域统计建模与噪声方差估计显著性修正相结合的合成孔径雷达(Synthetic Aperture Radar,SAR)图像斑点噪声滤波方法。该方法首先通过对数变换将乘性噪声模型转化为加性噪声模型,然后对变换后的图像进行双树复小波变换(Dualtree Complex Wavelet Transform,DCWT),并对复数小波系数的统计分布进行建模。在此先验分布的基础上,通过运用贝叶斯估计方法从含噪系数中恢复原始系数,达到滤除噪声的目的。实验结果表明该方法在去除噪声的同时保留了图像的细节信息,取得了很好的降噪效果。     

How do children do mathematics with LOGO?

Abstract  This paper considers some results of a study designed to investigate the kinds of mathematical activity undertaken by children (aged between 8 and 11) as they learned to program in LOGO. A model of learning modes is proposed, which attempts to describe the ways in which children used and acquired understanding of the programming/mathematical concepts involved. The remainder of the paper is concerned with discussing the validity and limitations of the model, and its implications for further research and curriculum development.