WDS技术在企业网中实现跨网远程部署的应用研究

随着计算机和网络技术的飞速发展,信息化建设越来越受到人们的重视,众多大中型企业纷纷利用企业网来管理部署所有的计算机,提高工作效率,提升管理水平,促进企业的快速发展。本文分析了大中型企业在部署大批量新计算机和重装客户端,以及批量管理计算机过程中存在的主要问题,通过利用WDS技术的特点和优势,实现企业网中跨网远程部署管理计算机,探索WDS技术在大中型企业网中的应用研究。     

一种远程自动安装中标麒麟操作系统的方法

随着软件国产化的逐步推进,中标麒麟操作系统获得了越来越广泛的应用。针对目前中标麒麟无法大批量自动安装的问题,首次提出了一种基于网络的远程安装方法。该方法通过在局域网上搭建系统安装服务器实现。系统安装服务器首先利用WOL技术远程唤醒待安装计算机,然后利用PXE技术自动启动安装过程,最后利用KickStart技术实现安装过程的自动交互。实际应用结果表明,利用该方法可以在30分钟内实现100台计算机的自动安装。     

高校公共网络机房系统维护效率探讨

针对高校公共机房软件维护的特点,讨论了PC机软件系统整体复制和应用软件批量安装的效率问题,给出了解决方法。实践表明,充分利用基于组播模式的数据传输技术可以大幅度节省网络复制的时间;灵活运用一些自动化脚本技术,也能够极大地提高软件的批量安装效率。     

新常态下计算机实验室硬件和软件管理方法分析

1.1软件与系统的批量安装在管理实验室机房上,软件与系统的安装工作非常必要。通常在实验室当中的计算机配置基本相同,为此,计算机在安装硬盘保护卡之后就可以安装大量的软件与系统,管理工作者仅仅需要将平时的教学软件和操作系统进行安装就行,再实施相应的管理设置,最后的时候进行测试就可以正常地应用,就能够以这台计算机作为核心,借助硬盘保护卡的在实验室的其它联网的计算机上进行复制。并且,倘若将来更新软件,那么也仅仅是拷贝出现改变的数据,进而能够适应教学软件的应用需要。     

用微软官方工具批量安装更新补丁

如果你没有激活自动更新而是习惯使用手工更新方式,那么在大多数情况下,我们每安装一个系统更新或补丁程序,都需要重新启动操作系统,其麻烦可想而知。现在,如果利用微软官方发布的QChain.exe工具,就可以在只重新启动一次的情况下批量安装。我们安装的更新程序越多,就越节省时间,这对于服务器来说是非常重要的,而且在Windows 2000、Windows NT 4.0上都可以运行。     

利用VB开发机房管理软件控制网络计算机硬盘分区的显示与隐藏

计算机网络技术的发展的简化了人们管理批量计算机的劳动量,通过网络来解决我们实际工作中出现的问题成为摆在每一个从事计算机管理人员的课题,本文就是解决公共机房批量计算机中的资料保密的问题。     

基于VB的远程唤醒软件的设计与实现

远程唤醒是通过向网卡发送特定数据包,实现计算机自动开启的技术.阐述了远程唤醒的原理,设计并实现了基于VB的远程唤醒软件.该软件能批量唤醒局域网中的计算机,从而提高计算机房的管理效率.     

利用虚拟机搭建Linux操作系统的实践环境

为了更好地让学生充分掌握网络安全技术课程,采用理论课与实践课相结合的教学模式.为了避免病毒攻击对机房主机产生危险,充分利用已有的计算机资源,利用虚拟机VMware软件在一台计算机上安装多个虚拟操作系统,搭建网络安全技术课程实践环境,不用对原有的计算机操作系统进行重装,提高了资源使用率.     

利用VB开发机房管理软件控制网络计算机硬盘分区的显示与隐藏

计算机网络技术的发展的简化了人们管理批量计算机的劳动量．通过网络来解决我们实际工作中出现的问题成为摆在每一个从事计算机管理人员的课题，本文就是解决公共机房批量计算机中的资料保密的问题。     

用VBA生成批处理文件实现按列批量重命名

利用VBA技术建立命令按钮,实现了批处理文件的自动生成,从而使计算机知识欠缺的普通工作人员,也能很容易的完成批量重命名文件的工作。在实际运用中,效果较好,显著提高了工作效率和准确性。     

Combined effects of fabric air permeability and moisture absorption on clothing microclimate and subjective sensation during intermittent exercise at 27 degrees C.

The present paper aimed at determining the combined effects of two different levels of air permeability and moisture absorption, in terms of clothing microclimate and subjective sensation, in resting and exercising subjects at an ambient temperature of 27 degrees C, a relative humidity of 50% and an air velocity of 0.14 m s-1. Three kinds of clothing ensemble were investigated: (1) polyester clothing with low moisture absorption and low air permeability (A), (2) polyester clothing with low moisture absorption and high air permeability (B), and (3) cotton clothing with high moisture absorption and high air permeability (C). The subjects exercised for 10 min on a cycle ergometer at an intensity of 30% maximal oxygen uptake and then had a 10 min rest. This sequence was repeated four times. The main findings are summarized as follows: (1) The clothing microclimate humidity in the back area was significantly higher in A than in B, and in C than in B. (2) The clothing microclimate temperature in the chest area was significantly higher in B than in A, and in B than in C. (3) The clothing microclimate temperature in the back area was significantly higher in C than in B. (4) The clothing surface temperature was significantly higher in C than in B. (5) Although the positive relationships between the microclimate humidity and forearm sweat rate was significantly confirmed in all three kinds of clothing, the microclimate humidity at chest for the same sweat rate was lower in C than in A and B. (6) Although the positive relationships between subjective sensation and forearm sweat rates were significantly confirmed in all three kinds of clothing, the subjective discomfort seemed to be reduced more effectively in C than in A and B for the same sweat rate. These results were discussed in terms of thermal physiology and combined effects of air permeability and moisture absorbency of the fabrics.     

Modelling long-memory volatilities with leverage effect: A-LMSV versus FIEGARCH

A new stochastic volatility model, called A-LMSV, is proposed to cope simultaneously with leverage effect and long-memory in volatility. Its statistical properties are derived and compared with the properties of the FIEGARCH model. It is shown that the dependence of the autocorrelations of squares on the parameters measuring the asymmetry and the persistence is different in both models. The kurtosis and autocorrelations of squares do not depend on the asymmetry in the A-LMSV model while they increase with the asymmetry in the FIEGARCH model. Furthermore, the autocorrelations of squares increase with the persistence in the A-LMSV model and decrease in the FIEGARCH model. On the other hand, if the correlation between returns and future volatilities is negative, the autocorrelations of absolute returns increase with the magnitude of the asymmetry in the FIEGARCH model while they decrease in the A-LMSV model. Finally, the cross-correlations between squares and original observations are, in general, larger in absolute value in the FIEGARCH model than in the A-LMSV model. The results are illustrated by fitting both models to represent the dynamic evolution of volatilities of daily returns of the S&P500 and DAX indexes.     

Methods of system development in Finland

Interest in the use of different methodologies, methods and tools for information systems analysis and design has been increasing for the last decade in Finland. This has resulted in the founding of a special interest group in systems analysis and design within the Finnish Data Procesing Association and in its making a survey of the methods and tools in use in Finland in 1980. This survey was in the form of a questionnaire mailed to the company members of the association. The results of the survey show a wide use of different tools in the design and implementation of information systems. In the analysis phase, there seems to be a need for more and better methods and tools. In 1980 several companies began to use new methodologies, methods and tools in the field; the most common are: the Swedish ISAC, Jackson's JSP, and the data dictionary.     

Contour tracking on ultrasound sequences of vascular images

Simple vascular measurements on sequences of echographic images can be used to quantify important indexes of cardiovascular risk. The measurement of the intima-media thickness and the characterization of the endothelial function are but two examples. Real-time image processing systems would be helpful to automatically track, locate, and discriminate vascular structures through image sequences. Many algorithms have been developed to accomplish this task and they are generally based on the application of a mathematical operator at the points of a starting contour and on an iterative procedure that brings the starting contour to the final contour. In this paper, the performances of a mathematical operator that exploits both temporal and spatial information are compared to those of an operator that only exploits spatial information. The paper shows that, in general, when tracking contours on image sequences and when two or more gray-level discontinuities are present and close to each other, as in the case of arteries, both operators should be used in sequence. The text was submitted by the authors in English. Marcello Demi was born in Cecina, Italy, in 1956. He graduated in Electronic Engineering from the University of Florence, Italy in 1985. He is currently head of the Computer Vision Group at the CNR Institute of Clinical Physiology in Pisa and he teaches a course on Medical Image Processing at the faculty of Applied Physics, University of Pisa. His research interests are image processing systems and filtering schemes inspired by the early stages of biological vision systems. He has 80 scientific publications and his objective is the development of common projects with people who work in the area of biological vision for the purpose of both understanding biological vision and developing image processing systems. Elisabetta Bianchini was born in Lucca, Italy, in 1975. She received the degree in Electronic Engineering from the University of Pisa, Italy, in 2004. Since 2004 she is junior research at CNR, the Italian National Research Council, at the DSP lab in IFC (Institute of Clinical Physiology). Her field of interest is image processing and in particular development of methods for the assessment of indices of cardiovascular risk from ultrasound images. She is author or co-author of 14 scientific publications in international journals and conference proceedings. Francesco Faita was born in 1973 in La Spezia (Italy). In 2001 he graduated from Università degli Studi di Pisa obtaining the degree of Electronic Engineer. Since 2001, he has been working as a research fellow at the Institute of Clinical Physiology of the Italian National Research Council. His main research interests lie in Computer Vision, in particular in the field of ultrasound image motion estimation. A major focus of his research in the last years has been development of clinically applicable automated techniques for cardiovascular analysis and prediction of disease progression. He is author or co-author of 58 scientific publications in international journals and conference proceedings. Viencenzo Gemignani was born in 1969, in Viareggio (Italy). In 1995, he graduated in Electronic Engineering from the University of Pisa. Since 1996, he has been working at the Institute of Clinical Physiology of the Italian National Research Council. His main research interests are in diagnostic ultrasound, realtime image analysis and non-invasive patient monitoring systems. He teaches a course on DSP processors at the Faculty of Engineering, University of Pisa. He is author or coauthor of 40 scientific publications in international journals and conference proceedings and is co-inventor of 4 patents in the field of ultrasonic image processing.     

基于多时相遥感数据的徐州市植被净初级生产力估算及相关性分析

以遥感数据和气象数据为主要数据源,应用改进的光能利用率模型估算徐州市2006、2008和2010年3年间6月份的植被净初级生产力(Net Primary Productivity,NPP),研究了该区域6月份NPP的时空变化及其与气象因子的相关性。结果表明：时间上,受气候和环境等因素综合变化的影响,研究区域6月份NPP呈逐年下降趋势;空间上,NPP的分布表现为在林地、草地和农田相对集中的区域偏高,且不同植被类型6月份的NPP大小关系在不同年份可能不同,其中在2006和2008年为农田>草地>林地,而2010年为农田>林地>草地。通过分析与气象因子的相关性和偏相关性,限制NPP的主要气象因子不是固定不变的,其中2006和2008年,限制NPP的主要气象因子为太阳辐射,而2010年为降雨量和温度。不同植被类型下NPP与气象因子相关性和偏相关性差异反映了不同类型植被生长对光、热、水条件要求的差异。
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Evolution of Emergency Management in Malaysia

Various types of disaster ranging from biological, structural collapse, fire and explosion, landslides and meteorological incidents have struck Malaysia. Safety and emergency laws and regulations in Malaysia had evolved in pace with the development and industrialisation of the country. Some of these disasters were land‐marked disasters whereby various safety and emergency acts and regulations were amended or introduced. In this article, the history of the evolution of various Safety and Emergency Laws, Regulations and Acts in the country since independence in 1957 until the establishment of the Permanent Guidelines for Disaster Management and Relief Operations in 1997 is presented. Lessons from past disasters and the rapid expansion of industrialisation have greatly influenced the evolution of safety and emergency management in Malaysia. However, this intermediary phase in the pursuit of development is often accompanied by an increase in vulnerability (McEntire, 1997). This paper discusses reasons that are attributed to the increase in vulnerability as well as the challenges faced by the nation in the area of safety and emergency planning.     

Computer networks and interfirm relationships in the automobile industry: A comparative study of Japan and Korea

This paper presents the results of comparative research between the Japanese and Korean automobile industries through empirical research on applications in the interfirm network and the effects on management. Almost all Japanese automobile parts suppliers installed an interfirm network in the latter half of the 1980s. In the case of Korea, it was in the middle 1990s. The type of interfirm networks both in Japan and Korea are vertical networks in which the assembler takes leadership for the construction and maintenance of their interfirm network. The kind of interchanged data on the network reflects the interfirm relationship between the assembler and the parts suppliers. Data in the design and technology field are interchanged via the interfirm network more in Japan than in Korea. This result demonstrates that the assembler and the parts suppliers have a closer relationship, such as “design-in”, in Japan than in Korea.     

Industry–academia collaborations in software testing: experience and success stories from Canada and Turkey

Collaboration between industry and academia supports improvement and innovation in industry and helps to ensure industrial relevance in academic research. However, many researchers and practitioners believe that the level of joint industry–academia collaborations (IAC) in software engineering (SE) is still relatively very low, compared to the amount of activity in each of the two communities. The goal of the empirical study reported in this paper is to characterize a set of collaborative industry–academia R&D projects in the area of software testing conducted by the authors (based in Canada and Turkey) with respect to a set of challenges, patterns and anti-patterns identified by a recent Systematic Literature Review study, with the aim of contributing to the body of evidence in the area of IAC, for the benefit of SE researchers and practitioners in conducting successful IAC projects in software testing and in software engineering in general. To address the above goal, a pool of ten IAC projects (six completed, two failed and two ongoing) all in the area of software testing, which the authors have led or have had active roles in, were selected as objects of study and were analyzed (both quantitatively and qualitatively) with respect to the set of selected challenges, patterns and anti-patterns. As outputs, the study presents a set of empirical findings and evidence-based recommendations, e.g.: it has been observed that even if an IAC project may seem perfect from many aspects, one single major challenge (e.g., disagreement in confidentiality agreements) can lead to its failure. Thus, we recommend that both parties (academics and practitioners) consider all the challenges early on and proactively work together to eliminate the risk of challenges in IAC projects. We furthermore report correlation and interrelationship of challenges, patterns and anti-patterns with project success measures. This study hopes to encourage and benefit other SE researchers and practitioners in conducting successful IAC projects in software testing and in software engineering in general in the future.     

Crisis Management and Strategic Orientation in Small and Medium‐Sized Enterprises (SMEs) in Peru,Mexico and the United States

This study addresses the link between management concern for organizational crises and competitive strategy in small and medium‐sized enterprises in Peru, Mexico and the United States. Surveys were completed by 270 Peruvian, 218 Mexican and 256 American managers. Strategic orientation in Peru did not mirror the broad pattern found in Mexico and in the United States. Levels of concern for crises were significantly higher in both Mexico and Peru than in the United States for 12 of 21 crises. The level of concern for crises tended to increase with management level more in Mexico and Peru than in the United States. Correlations between competitive strategy and crisis concern were significant in 26 of 126 instances.     

Spatio-temporal distribution of rice phenology and cropping systems in the Mekong Delta with special reference to the seasonal water flow of the Mekong and Bassac rivers

Multi-temporal Moderate Resolution Imaging Spectroradiometer (MODIS) data was used to estimate the spatial distribution of heading date and rice-cropping system employed in the Mekong Delta relative to seasonal changes in water resources in 2002 and 2003. We improved a Wavelet-based Filter for determining Crop Phenology (WFCP) and developed a Wavelet-based Filter for evaluating the spatial distribution of Cropping Systems (WFCS) to the interpretation of MODIS time-series data to determine the spatial distribution of rice phenology and various rice-cropping systems from the seasonal Enhanced Vegetation Index (EVI) data. The findings correspond well the physical characteristics of the cropping system in the Mekong Delta, which have changed over time in response to localized and seasonal changes in water resources. One such example is the double-irrigated rice-cropping system commonly employed in the upper Mekong Delta in the dry season to avoid damage due to the subsequent floods. The shortage of suitable irrigation water and intrusion of saline water in the coastal regions during the dry season has constrained the practice dry-season cropping and has meant that the double- and single-rainfed rice-cropping systems are employed in the rainy season. A triple-irrigated rice-cropping system is used in the central part of the Mekong Delta which is located midway between the flood-prone and salinity intrusion areas. Analysis of annual changes in the rice cropping systems between 2002 and 2003 showed that the triple-cropped rice expanded to the flood- and salinity-intrusion areas. This expansion indicates that the implementation of measures to limit the extent of flooding and salinity intrusion by improved farming technologies and improvements in land management. The heading dates in the upper Mekong Delta in 2003 were earlier than in 2002 by approximately 20 to 30 days. The reasons for this would be due to decreased flood runoff in 2002 compared to 2001, and implementation of government policies regarding early sowing of dry-season crops. Subsequent analysis of the MODIS data confirmed that the spatial distribution of rice-cropping systems was closely related to seasonal changes in river runoff regime in the Mekong Delta.