基于政务网构建“省—市—县远程可视会商系统”

本文介绍了如何在现有硬件方式的"省-市远程可视会商系统"基础上,构建基于政务网平台的纯软件方式的"市-县远程可视会商系统",并合并形成"省-市-县远程可视会商系统".通过该系统平台,可举行省-市、市-县或省-市-县三级远程可视会商、人影远程可视指挥、远程教育培训、远程业务指导等.     

论南阳气象通讯网络规划与设计原则

随着我国气象事业的不断发展和社会对气象信息需求的不断增长,河南省气象局近几年先后建成了千兆高速局域网、省-市-县三级宽带广域网、省-市远程视频会商系统、全省自动气象站网、全省气象短信分级制作平台以及宽带上互联网、气象网站、天气通网站等业务和服务系统,网络规模日益扩大,网络上传送的信息大大增加。而开放互联网又成为气象业务网络安全的主要隐患,因此气象信息网络系统建设在现代气象业务发展中占有重要地位。本文从设计原则、建设目标、系统设计与规划内容等方面介绍了南阳市气象局通讯网络系统的设计与规划,为气象服务工作的开展提供保障。     

地市级气象高清视频会商系统的构建与应用

本文介绍了地市级气象高清视频会商系统的结构、组成及主要应用。在气象信息网络平台的基础上,通过MCU级联,实现了区一地一县三级视频会商,画面的分辨率达到了1080P的高清标准。该系统在日常天气会商、业务会议及远程培训中已发挥了重要作用,在实际应用中取得了良好的效果。     

东北区域气象信息共享平台设计与实现

以省、市、县三级气象部门管理、业务、服务和科研等工作的气象信息需求为牵引,构建"结构合理、界面美观、功能齐全、操作方便"的气象信息共享平台,在东北区域内主要气象业务单位的技术支持下,实现气象信息在区域内范围内的充分共享。     

伊犁州预报会商系统简介

伊犁局气象局通过租用中国电信SDH宽带专用线,建立了省-州-县三级天气预报会商系统,通过该系统可以实现全疆区地县三级的天气会商,同时还可以方便快捷的召开省内、区内电视电话会议、举办业务培训、进行学术报告会等;也可以通过级联设备连接国家局电视电话会议。该文主要介绍伊犁州预报会商系统的架构和功能。     

安徽省气象信息共享平台

针对省、市、县三级气象部门对气象信息共享服务的需求,开发建立了安徽省气象信息共享平台．该平台实现了对全省气象信息的有效管理,能够提供气象信息的高效定位、快速检索、多样展示以及数据下载服务等功能．平台采用后台管理方式,大大增加了系统的灵活性和可扩展性．该平台的业务应用,将弥补安徽省气象部门缺少统一的气象信息共享平台的不足,大大提高安徽省的气象信息共享水平,为全省气象业务提供信息支撑．     

预警气象信息发布系统的网络设计与实现

预警气象信息发布平台网络系统是充分利用省级电子政务外网平台,建设一套面向省级-地市级-区县级的突发公共事件预警信息发布管理平台的网络系统。包括以电子政务外网为主干通信网络,连接省、市、县三级发布管理平台和预警信息发布单位;以气象业务网为系统备份网络,对省、市、县三级发布管理平台之间的通信链路进行备份,保证三级发布管理平台之间通信的可靠性,旨在将此设计提升为一种通用模型,提供业界借鉴与参考。     

预警气象信息发布系统的网络设计与实现

预警气象信息发布平台网络系统是充分利用省级电子政务外网平台,建设一套面向省级-地市级-区县级的突发公共事件预警信息发布管理平台的网络系统。包括以电子政务外网为主干通信网络,连接省、市、县三级发布管理平台和预警信息发布单位;以气象业务网为系统备份网络,对省、市、县三级发布管理平台之间的通信链路进行备份,保证三级发布管理平台之间通信的可靠性,旨在将此设计提升为一种通用模型,提供业界借鉴与参考。     

云南省气象探测资料上行实时监控系统的设计与实现

由于气象探测资料种类较多,且收集、发送的频次较多,因此需要一个气象通信业务实时监控平台,通过网络在线提供自动、实时的全省气象信息传输质量监控信息反馈,实现省、市(州)、县三级管理部门的实时动态管理.本章将对云南省气象探测资料上行实时监控系统进行详细的设计开发研究,包括:系统体系结构设计、后台自动化软件设计、数据库设计、WEB服务器设计等内容.     

基于虚拟化技术构建省级气象信息网络系统

针对四川省地形复杂、台站众多的特点,以及气象信息网络系统多次在各类自然灾害中受到严重破坏的情况,介绍了将IRF虚拟化技术应用到全新的省级气象信息网络系统升级改造中的方法.通过资源整合并采用BFD MAD检测提高整个网络系统的可靠性和稳定性,保障各类气象业务的高效率.在设备升级的同时,对整个网络系统的链路带宽及QoS等方面也进行了全新的设计,实现了全新的省、市、县三级气象信息网络系统整合.建设完成后的正常运行结果表明:该系统稳定可靠,体现了虚拟化架构的优势,能够满足今后一段时间内气象业务对网络的需求.     

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.