Made available in DSpace on 2014-06-12T15:52:27Z (GMT). No. of bitstreams: 2 arquivo3299_1.pdf: 8413271 bytes, checksum: f7e2f7602fa26d4744d748c1d3ff2002 (MD5) license.txt: 1748 bytes, checksum: 8a4605be74aa9ea9d79846c1fba20a33 (MD5) Previous issue date: 2009 / Conselho Nacional de Desenvolvimento Científico e Tecnológico / Documentos de requisitos tendem a ser inundados por requisitos tais como: descrições sem semântica, desnecessariamente longas e confusas, informações duplicadas, entre outros problemas. Estes problemas sintáticos diminuem a facilidade de entendimento de todo o documento de requisitos e podem prejudicar outras fases do processo de desenvolvimento do software. Avaliações de qualidade não ajudam muito se somente são baseadas em listas com qualidades desejadas. Elas devem também incorporar diretrizes para auxiliar na avaliação e melhoria dos documentos de requisitos. O processo AIRDoc surge como uma solução para avaliar e melhorar documentos de requisitos que foram descritos usando casos de uso. O processo proposto é baseado na definição de objetivos e questões que devem ser avaliadas por métricas. A qualidade dos modelos de casos de uso é melhorada com a utilização de refatorações

<p>Software metrics are a useful tool for assessing software quality and for making predictions. But currently the interpretation of the measured values is based on personal experience and gut feeling. Not much information is available about thresholds and possible ranges of the metric values. In order to be able to define thresholds on which general recommendations could be based, quantitative data has to be obtain for allowing statistical evaluations and further investigations. So far the collection of test projects requires significant manual interaction for downloading and describing metadata.</p><p>This thesis describes a process for automatically obtaining, storing and maintaining a large number of open software projects from SourceForge.NET [1]. The projects are stored in a local folder structure; the meta-data is stored in a local database. The process is automated as far as possible, repeatable, transparent, extendible and flexible.</p>

Mūsų dienomis informacinės sistemos tampa vis sudėtingesnės ir verslo procesams aprašyti seniai nebeužtenka paprastų tekstų ar schemų. Kompiuterizuotų IS reikalavimams aprašyti ir modeliuoti geriausiai tinka specialiai tam skirti modeliai. Modeliavimas tapo būtinas kuriant dideles, sudėtingas ar su kitomis sistemomis sąveikaujančias informacines sistemas, nors daugelis programuotojų siekia minimizuoti modeliavimo pastangas. Modeliuojami ne tik vartotojo poreikiai, dalykinė sritis, programinė įranga, bet ir organizacijos veikla - pastaraisiais metais ši modeliavimo fazė tapo daugelio projektavimo procesų dalimi. Todėl specialūs kompiuterizuoti modeliavimo įrankiai tapo neatskiriama sudėtingų IS kūrimo ir projektavimo dalimi. Modernėjant technologijoms vis labiau orientuojamasi į reikalavimų specifikavimo fazę IS kūrimo projektuose – reikalavimai turi lemiamą reikšmę projektuojant modernias ir sudėtingas informacines sistemas. Todėl vis didėja projektavimo įrankių įtaka IS kūrimo procese, jų pagalba kartais generuojant ir kodą. Taigi, kad tinkamai būtų sukurta ir vystoma nauja sistema, būtina tinkamai apsibrėžti viziją, veiklos modelį ir tiksliai specifikuoti reikalavimus. Šis procesas, bei veiklos modelio transformavimas į vartotojo reikalavimų sistemai modelį aptariamas šiame darbe. / In nowadays information systems are becoming more and more sophisticated and for business process definition it is not enough to use simple schemas and text. For information systems requirements there are created special models. Systems modeling became a must for creating big, sophisticated, difficult systems. User’s requirements, subject matter and specialty domain, software architecture and even organizations activities are being modeled in modern software development companies during systems design process. Special modeling tools are used to create information systems. During last few years software and business developers are focusing more to requirements specification phase. In information systems development projects strict and simply understandable requirements have critical meaning creating big sophisticated information systems. So usage of design and modeling tools is more and more popular. Using such tools sometimes program code is generated to. To develop stable system is crucial to have a vision, make good activity model and specify requirements for future system. This work covers the method of the formation of transformation between activity and use-case models. This transformation is based developing business vision and requirements to future system. The algorithm of transformation described is this work, formally defines the described models elements relations between each other. Solution, based on described algorithm was made on MagicDraw UML tool platform... [to full text]

Software metrics are a useful tool for assessing software quality and for making predictions. But currently the interpretation of the measured values is based on personal experience and gut feeling. Not much information is available about thresholds and possible ranges of the metric values. In order to be able to define thresholds on which general recommendations could be based, quantitative data has to be obtain for allowing statistical evaluations and further investigations. So far the collection of test projects requires significant manual interaction for downloading and describing metadata. This thesis describes a process for automatically obtaining, storing and maintaining a large number of open software projects from SourceForge.NET [1]. The projects are stored in a local folder structure; the meta-data is stored in a local database. The process is automated as far as possible, repeatable, transparent, extendible and flexible.

Summary Subject of this paper is workplace of employee of municipal department of economy. Main product of this paper is informational system (IS) intended for long term control of property of municipality and is related to preparation of documents concerning use of that property. Analysis and specifications concerning informational needs of municipal department of economy has been carried out. Similar systems (Sistema “BIUDŽETAS”, “Turtas”, “DEBETAS”, “ForFUND/Gov”) and methods of creating IS (creation of IS using cycle of existence of “waterfall”, method of prothotypes, JAD method, creating of IS using means of CASE) were analysed. Product was designed and realized using the following means: 1. MS Visio 2003 – designing 2. ProVision Workbench TM V 3.1 – designing 3. MS Access 2000 – DBMS for keeping data of property and use Product was introduced to employees of municipal department of economy.

Les applications du calcul fractionnaire en automatique se sont considérablement développées ces dernières années, surtout en commande robuste. Ce mémoire est une contribution à la commande robuste des systèmes d'ordre entier à l'aide d'un correcteur PID d'ordre fractionnaire.Le conventionnel régulateur PID, unanimement apprécié pour le contrôle des processus industriels, a été adapté au cas fractionnaire sous la forme PInDf grâce à l'introduction d'un modèle de référence d'ordre non entier, réputé pour sa robustesse vis-à-vis des variations du gain statique.Cette nouvelle structure a été étendue aux systèmes à retard sous la forme d'un Prédicteur de SMITH fractionnaire. Dans leur forme standard, ces correcteurs sont adaptés à la commande des systèmes du premier et du second ordre, avec ou sans retard pur.Pour des systèmes plus complexes, deux méthodologies de synthèse du correcteur ont été proposées, grâce à la méthode des moments et à l'approche retour de sortie.Pour les systèmes dont le modèle est obtenu à partir d'une identification, la boucle fermée doit en outre être robuste aux erreurs d'estimation. Un modèle pire-cas, déduit de la matrice de covariance de l'estimateur et des domaines d'incertitudes fréquentielles, a été proposé pour la synthèse du correcteur.Les différentes simulations numériques montrent l'efficacité de cette méthodologie pour l'obtention d'une boucle fermée robuste aux variations du gain statique et aux incertitudes d'identification. / The application of fractional calculus in automatic control have received much attention these last years, mainly in robust control. This PhD dissertation is a contribution to the control of integer order systems using a fractional order PID controller.The classical PID, well known for its applications to industrial plants, has been adapted to the fractional case as a PInDf controller, thanks to a fractional order reference model, characterized by its robustness to static gain variations.This new controller has been generalized to time delay systems as a fractional SMITH Predictor. In standard case, these controllers are adapted to first and second order systems, with or without a time delay. For more complex systems, two design methodologies have been proposed, based on the method of moments and on output feedback approach.For systems whose model is obtained by an identification procedure, the closed loop has to be robust to estimation errors. So, a worst-case model, derived from the covariance matrix of the estimator and the frequency uncertainty domains, has been proposed for the design of the controller.The different numerical simulations demonstrate that this methodology is able to provide robustness to static gain variations and to identification uncertainties.