基于.Net平台的Office技能考试系统的设计和实现

Office操作是计算机基础教育的技能要求。在自动化测评技术和.Net技术基础上,使用Visual Basic.Net编程语言和ADO.Net操作数据库,通过COM Interop来调用通用的Office组件模型设计实现了一个自动评测系统。系统实现了Word,Excel,PowerPoint的自动命题、组卷、考试功能,减少了阅卷的工作量,降低了手工阅卷中的主观因素的影响,提高了阅卷工作的准确性和公正性。进一步从系统的体系结构、数据库的设计、自动阅卷的设计等诸多方面,探讨了计算机技能教学自动化考试的设计和实现。     

Visual C#.Net数据库编程之一--数据库连接全接触

数据库连接应该是进行数据库编程第一步了.Visual C#.Net进行数据库编程利用的类库主要主要是ADO.NET.ADO.NET是.Net FrameWork SDK的一个子集,是.Net FrameWork SDK中专门用于数据库开发的类库总称.     

基于.Net平台的Office技能考试系统的设计和实现

Office操作是计算机基础教育的技能要求。在自动化测评技术和．Net技术基础上，使用Visual Basic．Net编程语言和ADO．Net操作数据库，通过COM Interop来调用通用的Office组件模型设计实现了一个自动评测系统。系统实现了word，Excel，PowerPoint的自动命题、组卷、考试功能，减少了阅卷的工作量，降低了手工阅卷中的主观因素的影响，提高了阅卷工作的准确性和公正性。进一步从系统的体系结构、数据库的设计、自动阅卷的设计等诸多方面，探讨了计算机技能教学自动化考试的设计和实现。     

.Net Remoting与分布式计算

探讨了.Net Remoting的体系结构和工作原理,介绍了.Net Remoting的相关对象和核心技术。研究如何运用.NetRemoting进行分布式计算,进而体现.Net Remoting功能的强大,可以跨多台计算机轻松进行分布计算,只需完成非常少的编程工作。最后运用.Net Remoting的相关技术去构建一个分布式超级计算机,在一个具体的应用中进行分布式计算。     

在.NET中嵌入Office Active控件的深度编程设计

如何在ASP.Net中嵌入Office Active控件,如同操作Microsoff Word、Excel、PowerPoint、Visio一样,在网页上操作Office Active控件,生成我们所需要的各种Office文档.在ASP.Net的代码中得以实现,就增强了B/S应用系统的可用性及可扩展性.     

如何使用Approach 97设计Net.Data Web页面

Lotus公司的DB2 Web Sizing Assistant是Approach 97中的SmartMaster应用程序,它可以将Approach 97的表格和报表转換到Net.Data的脚本文件。Web Sizing Assistant在Net.Data的编程功能方面前进了一大步。DB2已经包括了Approach,因此许多Net.Data的用户可能已经拥有了他们需要的这一工具。     

C#实现以Excel表格的的形式来显示数据

Excel表格是微软公司Office套件中专门用作电子表格处理的软件,在实际的办公中,Excel表格的用途是非常广的,由此许多办公人员喜欢以Excel表格的形式来存取数据.这就要求程序设计人员要掌握把已经得到数据集转换成Excel表格中.那么作为.Net程序开发语言中的一个重要组成部分的C#是如何来实现这个过程的转换的,本文就来探讨一下这个问题.     

基于VB.NET和SQL查询命令设计的模糊控制器

VB.NET是功能强大的编程语言，本文在VB.NET编程环境中，结合SQL查询语句设计模糊控制器。重点介绍了模糊控制器设计原理及过程，并给出了在VB.Net编程环境中实现的实例。     

用VBA开发基于Excel的数据统计

Excel是广泛应用的电子数据表格程序,如在Excel中使用VBA(Visual Basic for Application)编程将有很多机会开发出有价值的应用程序,本文介绍一种基于Excel的VBA编程方法,来扩展Excel的功能,以实现学生评优和奖学金评选的数据统计的计算功能.     

Excel2007 VBA文本格式处理编程一例

利用Excel中的VBA编程平台,可以编写出各种基于Excel的数据处理程序,不仅可以数值计算,还可以进行文本格式处理,本文阐明了一种文本格式处理编程方法,展示了利用Excel2007 VBA编程处理文本格式的基本原理与方法。     

日汉机器翻译中词的自动切分技术

本文阐述NDJCMT系统中词的自动切分技术, NDJCMT是我们实现的一个日汉机器翻译实验系统, 词的自动切分是日语词素分析、句法及语义分析的基础, 是一项日本语计算机信息处理的基础性研完课题, 它涉及对语言本身的研究。日语和汉语类似, 词及词之间无分隔符, 通常假名、汉字混写, 给词的切分造成了困难。作者根据日语的特点, 提出了一种“ 句节数最少” 词的自动切分方法, 使用语言编程且在一机上获得实现。     

Ergonomics evaluation of modified industrial helmets for use in tropical environments

Hotness, weight, fitting problems etc., have been found to be the chief causes of the unpopularity of industrial safety helmets in tropical environments in developing countries (DC). Some selected safety helmets manufactured in industrialized countries (IC) were modified to provide extra head ventilation and to reduce weight, in order to make them more acceptable to users in hot environments. The modified helmets were subjected to ergonomics evaluation both objectively and subjectively in the laboratory (in simulated tropical conditions) as well as in the field situation. There was evidence that white helmets had some advantages in comfort, viz. reduction of hotness, compared to the other colours, e.g. red, green etc., when worn in the presence of radiant heat in the laboratory. Ventilation holes provided at the top of the shell seemed to reduce the greenhouse effect within the helmet shell which therefore felt less uncomfortable than a fully covered helmet. Even with a small reduction of weight, such as 45 g in helmets weighing about 350g, the difference in weight was perceived by the wearers. In adapting helmets made in IC for use in tropical climates, head ventilation and low weight perception are important aspects in comfort which need to be considered. In addition to low cost, a harness material suitable for sweat absorption is required. Adjustability and sizing to fit 90% of the user population also needs to be considered in the design and manufacture of safety helmets for people in DC.     

Production control: Current developments and future trends

Manufacturing industry is going through a period of unprecedented change as a result of the developments in micro-electronic technology. This is bringing about a transformation not only in hardware, in the form of computer-aided manufacturing, but in the manner in which production is organised and controlled.It is in the latter connection that the present paper sets out to review current developments and future trends. In particular the machine readable bar-code is seen as a key element in extending computerised control to cover not only the machines, but tools, materials and parts and their movement in the development of fully integrated manufacturing systems.As the move towards automation gathers pace it is forecast that manufacturing industry will become more process industry like in form, with consequences for the way in which production is organised and controlled.Finally consideration is given to the manner in which these current developments in the field of production are giving rise to a structural alteration in industrial labour requirements in which, in the future, fewer people will be required but on highly enriched work tasks.     

Technical note: spine loading in automotive seating

For car manufacturers, seat comfort is becoming more important in distinguishing themselves from their competitors. Therefore, many studies on participative seat comfort are carried out. In this paper, an objective assessment approach is reported which evaluates the concept of "optimal load distribution", based on the identification of a close relationship between the pressure on the seat and the discomfort felt by the person sitting. An in vivo measurement of the pressure in the spinal disc, which is an indicator of the load in the spine, was performed. For this research, a pressure sensor was implanted with a canula in the middle of the disc intervertebralis of a participant. The local pressure on the disc was established for the participant in an automobile seat set in various seat positions. The results indicate that in the seat position with the pressure distribution corresponding to the most comfortable posture the pressure in the intervertebral disc is lowest. The pressure in this position is 0.5 bar, while in the upright seated position the pressure is 1.6 bar.     

An evaluation study of the use of a cognitive tool in a one-to-one classroom for promoting classroom-based dialogic interaction

An evaluation study was conducted to investigate the effect of the use of a computer-supported cognitive tool (CT) in the one-to-one classroom setting on student engagement, attainment and perceptions in learning common fractions. Two Primary 4 classes with 68 students participated in this study based on 11 teaching sessions lasting 455 min in total. The students in the experimental group learned the target topic with the use of CT in a one-to-one classroom, while the students in the control group learned the target topic under the traditional teaching approach. The results of a time allocation analysis showed that the use of CT in a one-to-one classroom enhanced student engagement in terms of time-on-task for learning exploration during class time. The results of the post-attainment test indicated that students in the experimental group performed better than those in the control group. Moreover, the questionnaire survey results indicated that students liked to learn the target topic with the use of CT in a one-to-one classroom. This study reveals the potential of the use of CT in a one-to-one classroom to promote classroom-based dialogic interaction in mathematics lessons. It also implies a need for a longitudinal study to investigate suitable pedagogical designs for the use of CT for promoting knowledge transfer in learning challenging mathematics topics.     

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.     

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.     

Mapping the vegetation changes in giant panda habitat using Landsat remotely sensed data

Since the 1950s, with national policy changes and socio-economic development, the habitat of the giant pandas has altered accordingly. This can also be inferred from the population changes of the giant pandas as reported in three national surveys. Thus, monitoring the changes in giant panda habitat and then taking appropriate action would be a valuable contribution to giant panda protection. In this paper, using existing habitats and potential habitats of the giant pandas as the study area, multitemporal remotely sensed data from the three national surveys are used as the data source. The land cover of the study area is mapped by the maximum likelihood classification (MLC) method. The overall accuracy and kappa statistics for the resulting classification are 0.8 and 90%, respectively. The results reveal that the current status of the giant panda habitat is very good. Between 1974 and 1989, because of deforestation in the area, the giant panda habitat deteriorated considerably; the total area of broadleaved forests, coniferous forests, mixed coniferous and deciduous broadleaved forests and shrubs decreased from 62.03% to 57.40% in the study area. However, from 1989 to 2002, due to the conservation policies put into action, the giant panda habitat recovered to some extent; the total area of broadleaved forests, coniferous forests, mixed coniferous and deciduous broadleaved forests and shrubs increased from 57.40% to 60.68% in the study area. However, conditions are different among the mountain systems. Taking into account only the total of broadleaved forests, coniferous forests, mixed coniferous and deciduous broadleaved forests and shrubs, in the Minshan mountain system, the forest cover changed from 57.70% in 1974 to 56.74% in 1989 and to 56.30% in 2002, which can be regarded as stable. In the Qinling mountain system, forested areas changed from 70.05% in 1974 to 66.93% in 1989 and to 67.17% in 2002, which reveals little change in this area. In the Qionglai mountain system, forested areas changed from 72.84% in 1974 to 71.53% in 1989 and to 73.22% in 2002; therefore, an increase can be noted in this area. In the Xiangling mountain system, forested areas also increased from 50.81% in 1974 to 50.20% in 1989 and to 53.15% in 2002. In the Liangshan mountain system, forested areas changed from 68.43% in 1974 to 55.81% in 1989 and to 60.07% in 2002. These results are in accordance with the giant panda population changes in different mountain systems. Thus, the best way to improve the threatened status of the panda population is to protect the current habitat and the potential habitat.     

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.     

The Old-Age Healthy Dependency Ratio in Europe

The aim of this study is to answer the question of whether improvements in the health of the elderly in European countries could compensate for population ageing on the supply side of the labour market. We propose a state-of-health-specific (additive) decomposition of the old-age dependency ratio into an old-age healthy dependency ratio and an old-age unhealthy dependency ratio in order to participate in a discussion of the significance of changes in population health to compensate for the ageing of the labour force. Applying the proposed indicators to the Eurostat's population projection for the years 2010-2050, and assuming there will be equal improvements in life expectancy and healthy life expectancy at birth, we discuss various scenarios concerning future of the European labour force. While improvements in population health are anticipated during the years 2010-2050, the growth in the number of elderly people in Europe may be expected to lead to a rise in both healthy and unhealthy dependency ratios. The healthy dependency ratio is, however, projected to make up the greater part of the old-age dependency ratio. In the European countries in 2006, the value of the old-age dependency ratio was 25. But in the year 2050, with a positive migration balance over the years 2010-2050, there would be 18 elderly people in poor health plus 34 in good health per 100 people in the current working age range of 15-64. In the scenarios developed in this study, we demonstrate that improvements in health and progress in preventing disability will not, by themselves, compensate for the ageing of the workforce. However, coupled with a positive migration balance, at the level and with the age structure assumed in the Eurostat's population projections, these developments could ease the effect of population ageing on the supply side of the European labour market.