No description available.

More and more business processes are moved to the web to have all information easily accessible to everyone. High requirements are raised for business process automation – software systems should be easy to use, multilingual, expandable, and flexible. They should do the major part of organizational tasks. In the current work, the conference system model is proposed and implemented using Tapestry framework, which gives conceptual clarity and possibilities to expand system in the future. Much attention is devoted to process automation – sending of messages at predefined time moments, calculations, process stages management is executed by software agents. Only parameters are set by the administrator. The system enables executing of several conferences simultaneously and saves their history.

No description available.

L’utilisation de robots collaboratifs dans l’industrie de production est en plein essor. Ces robots, dont la puissance est limitée, sont dotés de capteurs leur permettant de détecter la présence d’obstacles, afin de garantir la sécurité des humains se trouvant aux alentours. On s’intéresse dans cette thèse à l’utilisation de systèmes redondants, collaboratifs et mobiles (bras articulés montés sur plateformes mobiles), dans un environnement de production aéronautique peuplé d’humains, pour la réalisation d’opérations d’assemblage. Du point de vue des process, l’utilisation de ces systèmes, souvent beaucoup moins imposants et rigides que leurs homologues non collaboratifs, est jalonnée de défis. La grande souplesse mécanique et les faibles couples qui les caractérisent peuvent induire des imprécisions de positionnement et une incapacité à soutenir l’intensité d’une interaction physique. Ce contexte induit également un besoin d’autonomie de ces systèmes, qui sont amenés à travailler dans des environnements en perpétuelle évolution. Dans cette thèse, une formulation de la redondance cinématique est d’abord présentée. Le formalisme associé permet de simplifier l’exploitation de la liberté que ces systèmes possèdent sur le choix des postures à utiliser pour réaliser des tâches de placement statique de l’effecteur. Ce formalisme est ensuite exploité pour améliorer et caractériser le comportement en déformation et la capacité d’application d’efforts des systèmes redondants sériels. Enfin, le sujet de la planification des mouvements de systèmes robotisés dans un environnement dynamique et encombré est considéré. La solution présentée adapte l’algorithme bien connu des Probabilistic RoadMaps pour y inclure une anticipation des trajectoires des obstacles dynamiques. Cette solution permet de planifier des mouvements sécuritaires, peu intrusifs et efficaces, jusqu’à la destination. / Industrial applications involving collaborative robots are regarded with a growing interest. These power-limited systems are embedded with additional sensing capabilities, which allow them to safely work around humans and conquer new industrial grounds. The subject of managing redundant, collaborative and mobile systems, for assembly operations within a human-populated aircraft production environment, is addressed in this thesis. From a process perspective, the use of these smaller and less stiff counterparts of the non-collaborative robots comes with new challenges. Their high mechanical flexibility and weak actuation can cause shortcomings in positioning accuracy or for interaction force sustainment. The ever-changing nature of human-populated environments also requires highly autonomous solutions. In this thesis, a formulation of positional redundancy is presented. It aims at simplifying the exploitation of the freedom redundant manipulators have on static-task-fulfilling postures. The associated formalism is then exploited to characterise and improve the deformational behaviour and the force capacity of redundant serial systems. Finally, the subject of planning motions within cluttered and dynamic environments is addressed. An adaptation of the well-known Probabilistic RoadMaps method is presented – to which obstacles trajectories anticipation has been included. This solution allows to plan safe, efficient and non-intrusive motions to a given destination.

This text deals with computer network security using honeypot technology, as a tool of intentional trap for attackers. It closely describes basic thoughts, together with advantages and disadvantages of this concept. The main aim is a low interaction honeypot Honeyd, its functionality and possible extensional features. As a practical part of the text there is a description of principles of implementation Honeyd service scripts, which are represented as a simulation of behavior of computer worm Conficker. Further it describes creation of automated script used for analysis and processing of gathered data, captured during actual deployment of Honeyd in Internet network.

Semi-automated processes are becoming more common within the field of waste management. They are often more efficient and improves the waste operators’ work environment in terms of security and health factors. The French company Veolia, engaged in waste management, has for these reasons developed the Tri Télé-Opéré (TTO) - a system where the direct contact between operator and waste is removed, and the waste is separated via a touch screen. The waste line is currently shown with a series of images in the system. This explorative study investigated how a representation of the line was perceived when using dynamic images on the screen. Diverse sequences with various parameters (viewpoint, direction and pace) were studied in order to observe how they supported the recognition and designation of the operators working with the system. Qualitative results from user tests performed with both novices and waste operators identified parameters that should be considered when using dynamic images of the waste line. The study shows that assembled images captured with an angle of 90°, shown in a slideshow mode are preferred. The viewpoint should furthermore be clear and detailed and the information should be displayed in a direction that corresponds to the long side of the screen, while having a size that make use of the screen surface. Moreover, the results suggest that the pace of the waste line could be increased if parameters allowing good recognition are used simultaneously. This study provides a first insight in how users perceive the TTO with dynamic images and which parameters that could facilitate the work. It is furthermore believed that a further development of this representation of information could ameliorate the future work situation for the waste operators, and thus also the efficiency of the sorting process. / Halvautomatiserade processer blir allt vanligare inom området avfallshantering. Det är ofta mer effektiva och förbättrar avfallsoperatörernas arbetsmiljö när det kommer till säkerhet- och hälsoaspekter. Det franska företaget Veolia, som arbetar med insamling och hantering av avfall, har på grund utav detta utvecklat Tri Télé-Opéré (TTO) – ett system där direktkontakten mellan sorterare och avfall har avlägsnats och avfallet istället sorteras via en pekskärm. Systemet visar för tillfället upp avfallslinan med en serie stillbilder. Denna explorativa studie har undersökt hur linan uppfattades med dynamiska bilder på skärmen. Diverse sekvenser med olika parametrar (synvinkel, riktning och hastighet) studerades för att se hur de stödde avfallsoperatörernas igenkänning och klassificering i sorteringen vid skärmen. Kvalitativa resultat från användartest utförda med både nybörjare och avfallsoperatörer identifierade parametrar som bör beaktas när en presentation av avfallslinan med dynamiska bilder används. Studien visar att ett bildspel bestående av bilder tagna med en 90° vinkel föredrogs. Synvinkeln bör vara tydlig och informationen bör visas i en riktning som överensstämmer med skärmens långsida, samt ha en storlek som tar vara på bildskärmens yta. Hastigheten på avfallslinan kan ökas om parametrar som möjliggör ett bra igenkännande används simultant. Denna studie ger en första inblick i hur användarna upplever TTO med dynamiska bilder, och vilka parametrar som skulle kunna underlätta arbetet. En vidareutveckling av denna informationspresentation kan förbättra den framtida arbetssituationen för avfallsoperatörer, och därmed också effektiviteten i sorteringsprocessen.

The subject of this diploma thesis is the design of a single-purpose machine for automatic testing of pneumatic fittings. Pneumatic fittings used in brake systems are subject to high technical requirements and 100% tightness control in production. In this case, manual testing is not effective and the goal is to automate the process. The theoretical part presents pneumatic mechanisms, analysis of the tested pneumatic fitting with technical parameters, the possibility of tightness testing, use of sensors, and rotary tables. In the practical part, a systematic analysis of the problem was performed, according to which the overall design proceeded. Subsequently, the design of the complete machine containing individual nodes is processed, supplemented by the necessary calculations. The conclusion of the thesis contains an evaluation of the whole project.

The diploma thesis focuses on optical fiber sensors with detailed preview of the turbidity sensor, its design and testing. The introduction deals with the general theory of fiber sensors and measurement methodology of physical variables. This part is followed by a charter focusing on the possible ways of measuring turbidity. Furthermore, the diploma thesis introduces design of the new turbidity sensor which is realized with consideration of the industrial usage and future application to the automated process of beer production. It also includes a detailed description of the hardware and software sensors created within this thesis. The last section is devoted to a calibration and testing functionality of turbidity sensor.

Una de las primeras etapas en la Planificación de Procesos asistida por ordenador, para procesos de mecanizado por arranque de material, consiste en identificar las zonas de material a eliminar en el bruto de partida para generar la pieza. El resultado es un conjunto de entidades llamadas: Elementos Característicos de Mecanizado, que tienen una clara relación con las operaciones de mecanizado. Al procedimiento de obtención automática de estas entidades se le denomina: reconocimiento automático de Elementos Característicos de Mecanizado (AFR, Automatic Feature Recognition), en el que partiendo del modelo 3D del bruto y de la pieza se establecen las entidades de trabajo adecuadas (Elementos Característicos de Mecanizado). Estas entidades contienen la información necesaria para poder llevar a cabo una Planificación de Procesos automática. A su vez, la información se va completando y ampliando a medida que se avanza en las etapas de la Planificación. En la Tesis se plantea el reconocimiento automático de Elementos Característicos de Mecanizado como una de las primeras etapas de la Planificación de Procesos, y que permite el enlace con el diseño asistido por ordenador. Este reconocimiento debe tener un planteamiento dinámico, ofreciendo distintas opciones. Su solución no debe ser una entrada estática, prefijada, para el resto de etapas de la Planificación. El proceso de reconocimiento está fuertemente influenciado por conceptos y decisiones de índole tecnológico (tipos de herramientas, movimientos característicos de los procesos, influencia del corte vinculado, ), que lo guían y que permiten obtener resultados válidos en la aplicación destino: el mecanizado. Atendiendo a este planteamiento, la Tesis ofrece una solución general y completa al proceso de reconocimiento automático de Elementos Característicos de Mecanizado, teniendo en cuenta a los llamados procesos convencionales (torneado, fresado, limado, rectificado, etc.). La solución propuesta no se restringe a piezas / Gutiérrez Rubert, SC. (2007). Análisis y procesado tecnológico del modelo sólido de una pieza para determinar sus elementos característicos de mecanizado [Tesis doctoral]. Universitat Politècnica de València. https://doi.org/10.4995/Thesis/10251/1963