微波无线通讯系统在钢卷运输系统中的应用

在钢卷运输小车系统中应用微波管道传输通讯信号的无线系统,使该系统体现出传输稳定、可靠、维护工作量少等优点,具有较大的应用推广价值。     

On domain modelling of the service system with its application to enterprise information systems

Information systems are a kind of service systems and they are throughout every element of a modern industrial and business system, much like blood in our body. Types of information systems are heterogeneous because of extreme uncertainty in changes in modern industrial and business systems. To effectively manage information systems, modelling of the work domain (or domain) of information systems is necessary. In this paper, a domain modelling framework for the service system is proposed and its application to the enterprise information system is outlined. The framework is defined based on application of a general domain modelling tool called function-context-behaviour-principle-state-structure (FCBPSS). The FCBPSS is based on a set of core concepts, namely: function, context, behaviour, principle, state and structure and system decomposition. Different from many other applications of FCBPSS in systems engineering, the FCBPSS is applied to both infrastructure and substance systems, which is novel and effective to modelling of service systems including enterprise information systems. It is to be noted that domain modelling of systems (e.g. enterprise information systems) is a key to integration of heterogeneous systems and to coping with unanticipated situations facing to systems.     

浅谈光纤通信及SDH通信系统的发展和演变

文章论述了光纤通信系统的产生、演变及发展,并对SDH系统最终取代PDH系统进行了论述。同时,依据实际应用中出现的各种新型光通信技术进行了简要介绍,可根据各种网络的实际应用情况进行采用。     

计划排产在卷烟生产中的应用研究

文章针对卷烟厂混合型的卷烟生产,采用车间调度问题的方法,系统分析了卷烟生产中卷包和制丝不同生产环节的特点,得到了它们适用的计划模型以及相适应的算法。根据研究开发的计划排产信息系统,通过在武汉卷烟厂的实际应用表明,该计划排产信息系统具有优化排产、计划冲突避免的优点,取得了较好的应用效果。     

关于动力环境监控系统在通信电源中的应用

通信电源系统的正常运行对通信网络的稳定和安全有极大的影响。而通信动力环境监控系统又是保证通信电源系统正常工作的前提条件,也是不断更新技术的必然结果。本文论述了通信网络中采用先进的管理手段,构成的通信电源及动力环境监控系统为解决通信电源系统的可靠安全性以及为维护人员在管理上更为合理和高效率起到的重要作用。     

论岩土工程勘察在高铁建设中的应用

高速铁路作为未来最重要的区域交通工具,我国已经把高速铁路建设作为新世纪铁路工作者的首要课题。但是我国由于地域辽阔、地质复杂等特点,岩土工程勘察在高铁建设过程中显得尤为重要。文章就目前我国高铁建设中岩土工程勘察应用的重要性、存在的问题和应用情况进行探讨。     

城市发展战略规划中情景分析方法的运用——以临汾市分例

通过临汾城市发展战略规划的实践,提出将情景分析引入战略规划的思路,对具体步骤做了系统阐述,并将其应用于临汾城市空间发展战略规划之中。在分析现状和识别关键影响因素的基础上,设定城市未来发展的情景,对最有可能出现的情景进行分析与评价,并最终确定城市发展战略,从而有效地解决城市发展中的不确定性问题和人的能动性问题,为决策者提供科学合理的参考。     

生态和谐视角下的山地步行交通规划及指引

当前国内对城市步行交通规划的理论研究还比较薄弱,步行交通出行在山地城市有着重要的地位。本文提出在把握未来山地城市生态化发展的趋势基础上,结合山地城市生态化发展来分析其步行交通的特点,强调生态和谐的步行交通规划,将自然生态、人工生态、人文生态融为一体。通过进一步解析生态和谐的规划目标,结合重庆市步行交通体系规划研究案例,提出了山地步行交通规划的理论与方法,尝试构建山地步行环境与设施设计与管理的指引,从类型指引和细部设计指引两方面指导下阶段具体规划设计。     

Data configurations in railway signalling engineering - an application of enterprise systems techniques

Railway signalling system is a safety-critical system to ensure railway safety and its development cost is huge. It is of great economic value to apply the generic signalling systems in different environments through configuration of different application data. In this paper, a new method to configure the application data completely and accurately is illustrated; in particular, a technique called automatic generation technology is introduced to automatically configure the functional logic of safety-critical systems, i.e. computer-based interlocking (CBI) system and automatic train protection (ATP) system. All of the application data are collected from the workflow among various departments through the enterprise system (ES). Some application data are represented by models employing automatic generation technology, and the functional logic is then obtained through analysis using these models. A configuration platform based on the ES is developed in which both the efficiency and accuracy of the application data configuration are significantly improved. In addition, it is capable of reducing human errors to a maximal extent.     

A methodology for the assessment of ridesharing program benefits and impacts

Due to the increased cost and decreased availability of energy, many cities are developing experimental ridesharing programs. The evaluation of such public transportation programs often involves some form of benefit/cost analysis. In this paper we review a methodology proposed by Wagner for calculating ridesharing program benefits. We propose a modification for calculating vehicle-miles reduction and suggest a survey instrument for collecting the appropriate data. In addition, we present a surrogate measure which is simpler to compute and allows sensitivity analysis for incorporating certain intangible factors. Data from a survey conducted in the Greater Cincinnati area is used to illustrate the calculations. The results can be useful in evaluating other ridesharing programs.     

系统源项计算程序CPDS与VPE集成运用的研究

CPDS是一套用于压水堆核电厂放射性系统及设备源项的计算软件。目前,该程序所用到的设备数据和连接关系都是通过手动输入和建立。为了提高CPDS软件的利用效率,减少人工输入数据的出错率,通过对工厂设计管理系统(PDMS)中系统图软件VPE P&ID的研究,充分利用PDMS三维设计软件的数据库资源,开发了CPDS与VPE数据库集成运用程序。实践证明,该集成运用方式可靠,可以运用于放射性系统及设备源项的计算。     

An application of six sigma methodology to enhance leisure service quality

Thanks to flourishing development of the service industry for the past few years, its GDP output value is over 73%, which accounts for 58% of the employment population. The leisure service industry, in particular grows by multiple revealing its significant importance. As there is a feature of high homogeneity and substitution in the same trade, the core issue lies on enhancement of service quality in an environment of keen competition. As a result, six sigma (6σ) is applied in this research to improve service quality and increase competitiveness of the leisure industry. First, the service quality model proposed by Parasuraman, A., V. A. Zeithaml, and L. L. Berry (PZB model for short) is utilized to design the items in the service quality questionnaire. Importance and satisfaction of each service item perceived by customers are based for the scale, whose means are further converted to indexes. Thus, a scale-based service performance evaluation matrix with indices of importance as the Y-axis and those of satisfaction as the X-axis is defined. Then, service factors of high importance and low satisfaction are located and defined for improvement in accordance with the index location of each service factor. A measurement model based on the difference between customers’ importance and satisfaction is proposed and a measurement index is defined for an objective evaluation method and procedures. Next, factors of customer dissatisfaction are analyzed and improvement methods are devised. Finally, leisure service quality is monitored by the performance control model.     

An application of six sigma methodology to reduce shoplifting in bookstores

Recently, bookstores in Taiwan have been facing keen competition and the resultant impact. Most shopkeepers understand that when they sell one hundred dollars worth of merchandise, they may not even generate ten dollars worth of profits. However, when they lost one hundred dollars worth of merchandise by shoplifting, it means they lost 100% of cost and possible profits. For this reason, shopkeepers face a crucial task, determining how to construct a model with a set of evaluations, analysis and suggested improvements, in order to promote the management of shoplifting in bookstores. This article, therefore, applied Six Sigma methodology to help reduce the incidence of shoplifting in bookstores.     

A planning model for regional systems of CT scanners.

For the last couple of years the number of CT scanners has increased considerably in the Federal Republic of Germany. This development has led to regional disparities in the provision of CT scanner installations. For the purpose of evaluating additional locations for CT scanners a planning model is proposed. The model contains two planning options: the number of CT scanners and the regional distribution of scanner locations. It allows one to calculate overall operation costs and transportation costs, as well as additional criteria relevant to decisions about regional systems of CT scanners. The model has been applied to the northeast of Baden-Württemberg. One of the interesting findings is that an increase in the number of CT scanners may result in lower total costs for a regional system of CT scanners.     

论城市规划和管理中的规制和利导原则及其应用

论文认为由于城市中存在大量的负经济外部性,应建立与市场有机结合的一套规则或制度引导城市健康地成长和发展.像市场规制在其他领域一样,城市管理和规划中的市场规制原则为:使私人成本等于社会成本,私人收益等于社会收益.在社会主义市场经济条件下,城市规划者可以通过对自己掌控的、影响城市发展和空间配置的要素的规划来引导城市达到其合理结构.因势利导的原则除了系统性外,还有近远期相结合的原则.论文对规制和利导原则在交通结构和交通定价、土地合理定价与土地利用、城市空间战略、土地利用和交通系统、城市发展与土地供给等方面的应用进行了论述.     

透视运价指数——专访北京汇通天下信息技术有限公司总裁翟学魂

有一个误区是“货运企业一定要向第三方物流转型”。物流产业中,第三方物流企业仅仅是其中的一个种类,物流产业规模再大,也仅仅能够容纳少数提供整体解决方案的第三方物流企业,都去做整合资源的第三方,谁来发育发展现代化的公路运输产品及运输网络毋静     

Multi-level analysis in information systems research: the case of enterprise resource planning system usage in China

Information technology (IT) usage within organisations is a multi-level phenomenon that is influenced by individual-level and organisational-level variables. Yet, current theories, such as the unified theory of acceptance and use of technology, describe IT usage as solely an individual-level phenomenon. This article postulates a model of organisational IT usage that integrates salient organisational-level variables such as user training, top management support and technical support within an individual-level model to postulate a multi-level model of IT usage. The multi-level model was then empirically validated using multi-level data collected from 128 end users and 26 managers in 26 firms in China regarding their use of enterprise resource planning systems and analysed using the multi-level structural equation modelling (MSEM) technique. We demonstrate the utility of MSEM analysis of multi-level data relative to the more common structural equation modelling analysis of single-level data and show how single-level data can be aggregated to approximate multi-level analysis when multi-level data collection is not possible. We hope that this article will motivate future scholars to employ multi-level data and multi-level analysis for understanding organisational phenomena that are truly multi-level in nature.     

城市公共停车场规划评价指标体系解析

为了确定符合交通发展战略、技术先进和合理可行的停车场规划方案,从停车场使用者、经营者、周边居民和政府四个不同的角度,建立和解析了城市公共停车场规划评价指标体系,为停车场规划方案的科学选优提供了决策依据.     

Adapting football to the child: an application of the logistic regression model in observational methodology

Logistic regression is included into the analysis techniques which are valid for observational methodology. However, its presence at the heart of this methodology, and more specifically in physical activity and sports studies, is scarce. With a view to highlighting the possibilities this technique offers within the scope of observational methodology applied to physical activity and sports, an application of the logistic regression model is presented. The model is applied in the context of an observational design which aims to determine, from the analysis of use of the playing area, which football discipline (7 a side football, 9 a side football or 11 a side football) is best adapted to the child’s possibilities. A multiple logistic regression model can provide an effective prognosis regarding the probability of a move being successful (reaching the opposing goal area) depending on the sector in which the move commenced and the football discipline which is being played.