A distributed solution to software reuse

Reuse can be applied to all stages of the software lifecycle to enhance quality and to shorten time of completion for a project. During the phases of design and implementation are some examples of where reuse can be applied, but one frequent obstruction to development is the building of and the identifying of desirable components. This can be costly in the short term but an organisation can gain the profits of applying this scheme if they are seeking long-term goals. Web services are a recent development in distributed computing. This thesis combines the two research areas to produce a distributed solution to software reuse that displays the advantages of distributed computing within a reuse system. This resulted in a web application with access to web services that allowed two different formats of component to be inserted into a reuse repository. These components were searchable by keywords and the results are adjustable by the popularity of a component’s extraction from the system and by user ratings of it; this improved the accuracy of the search. This work displays the accuracy, usability, and speed of this system when tested with five undergraduate and five postgraduate students

Working Notes from the 1992 AAAI Workshop on Automating Software Design. Theme: Domain Specific Software Design

The goal of this workshop is to identify different architectural approaches to building domain-specific software design systems and to explore issues unique to domain-specific (vs. general-purpose) software design. Some general issues that cut across the particular software design domain include: (1) knowledge representation, acquisition, and maintenance; (2) specialized software design techniques; and (3) user interaction and user interface

Human machine interface performance and instrumentation for high availability systems

Trabalho de projecto de mestrado, Engenharia Informática (Sistemas de Informação), Universidade de Lisboa, Faculdade de Ciências, 2010Air Traffic Control (ATC) provides services whose objective is to manage aircrafts to ensure safely orderly and expeditious flows of traffic. The LISATM system has a number of Controller Working Positions equipped with surveillance display applications, the Operator Display System (ODS). Due to redundancy requirements, there are two equivalent applications developed with different technologies. This project focused on the Air Situation Display System (ASD), na application which provides a surveillance display with user-interaction capability and is developed in Java technology. The application integrates the Radar Fallback keeping the looks and feels from the ODS System, only being developed in a different programming language. Thus the present work focused on monitoring the performance of high availability Real-Time Human-Machine Interface applications. Recommendations were endorsed for quantifiable performance, being these activities accompanied by a corresponding demonstration of results suitability for the intended context. Modules were defined in order to instrument applications Human-Machine Interface High Performance and High Availability (HMI-HPHA) with features necessary and sufficient for the pursuit of Real- Time performance analysis. These modules were developed using JAVA technology using the Java Management eXtensions (JMX), to manage the created agents. All the monitoring services run in real-time so it can inform the managers of changes of the application state as soon as it happens. This implies that the information provided needs to be not only concise but also adequate to the context.O Controle de Tráfego Aéreo (ATC) presta serviços, cujo objectivo é direccionar o fluxo de aeronaves para garantir a ordem, rapidez e segurança do tráfego, bem como para dar informações aos pilotos. O sistema LISATM tem um número de postos de trabalho, para os controladores, equipado com aplicações de vigilância radar (Display System Operator - ODS). Devido a requisitos de redundância, existem duas aplicações equivalentes desenvolvidas com diferentes tecnologias. Este projecto focou-se no Air Display System (ASD). Aplicação que fornece vigilância radar com capacidade de interacção com o utilizador, sendo desenvolvido com tecnologia Java. A aplicação integra o Radar Fallback, mantendo o aspecto e mecânica de utilização igual ao Sistema ODS, com a diferença a residir na linguagem de programação. O foco do presente projecto incidiu sobre o desempenho de aplicações de Interface Homem-Máquina em Tempo-Real de elevada disponibilidade. Desta forma foram elaboradas propostas de recomendações de desempenho quantificáveis a serem incorporadas no ciclo de desenvolvimento de aplicações HMI-HPHA (Human-Machine Interface High Performance and High Availability). Estas foram acompanhadas da correspondente demonstração da adequabilidade ao contexto pretendido. Para isso foram definidos e desenvolvidos módulos de forma a instrumentar a aplicação HMIHPHA com as funcionalidades necessárias e suficientes para a persecução da análise de desempenho. Estes módulos foram desenvolvidos com recurso à tecnologia JAVA e às ferramentas de automatização dos mesmos, usando Java Management eXtensions (JMX) para gerir os agentes desenvolvidos. Todos os serviços de monitoria foram executados em Tempo-Real de modo a informar os gestores aquando de alguma mudança de estado da aplicação. Estas informações necessitam não só de ser concisas, mas também adequadas ao contexto

An XML-based framework for electronic business document integration with relational databases

Small and medium enterprises (SMEs) are becoming increasingly engaged in B2B interactions. The ubiquitousness of the Internet and the quasi-reliance on electronic document exchanges with larger trading partners have fostered this move. The main technical challenge that this brings to SMEs is that of business document integration: they need to exchange business documents with heterogeneous document formats and also integrate these documents with internal information systems. Often they can not afford using expensive, customized and proprietary solutions for document exchange and storage. Rather they need cost-effective approaches designed based on open standards and backed with easy-to-use information systems. In this dissertation, we investigate the problem of business document integration for SMEs following a design science methodology. We propose a framework and conceptual architecture for a business document integration system (BDIS). By studying existing business document formats, we recommend using the GS1 XML standard format as the intermediate format for business documents in BDIS. The GS1 standards are widely used in supply chains and logistics globally. We present an architecture for BDIS consisting of two layers: one for the design of internal information system based on relational databases, capable of storing XML business documents, and the other enabling the exchange of heterogeneous business documents at runtime. For the design layer, we leverage existing XML schema conversion approaches, and extend them, to propose a customized and novel approach for converting GS1 XML document schemas into relational schemas. For the runtime layer, we propose wrappers as architectural components for the conversion of various electronic documents formats into the GS1 XML format. We demonstrate our approach through a case study involving a GS1 XML business document. We have implemented a prototype BDIS. We have evaluated and compared it with existing research and commercial tools for XML to relational schema conversion. The results show that it generates operational and simpler relational schemas for GS1 XML documents. In conclusion, the proposed framework enables SMEs to engage effectively in electronic business

Process-Based Quality (PBQ) Tools Development

The objective of this effort is to benchmark the development of process-based quality tools for application in CAD (computer-aided design) model-based applications. The processes of interest are design, manufacturing, and quality process applications. A study was commissioned addressing the impact, current technologies, and known problem areas in application of 3D MCAD (3-dimensional mechanical computer-aided design) models and model integrity on downstream manufacturing and quality processes. The downstream manufacturing and product quality processes are profoundly influenced and dependent on model quality and modeling process integrity. The goal is to illustrate and expedite the modeling and downstream model-based technologies for available or conceptual methods and tools to achieve maximum economic advantage and advance process-based quality concepts

The engineering design integration (EDIN) system

A digital computer program complex for the evaluation of aerospace vehicle preliminary designs is described. The system consists of a Univac 1100 series computer and peripherals using the Exec 8 operating system, a set of demand access terminals of the alphanumeric and graphics types, and a library of independent computer programs. Modification of the partial run streams, data base maintenance and construction, and control of program sequencing are provided by a data manipulation program called the DLG processor. The executive control of library program execution is performed by the Univac Exec 8 operating system through a user established run stream. A combination of demand and batch operations is employed in the evaluation of preliminary designs. Applications accomplished with the EDIN system are described