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  • About
  • The Global ETD Search service is a free service for researchers to find electronic theses and dissertations. This service is provided by the Networked Digital Library of Theses and Dissertations.
    Our metadata is collected from universities around the world. If you manage a university/consortium/country archive and want to be added, details can be found on the NDLTD website.
221

Gestion des risques liés au transport des matières dangereuses / Risk management related to the transport of dangerous goods

Najib, Mehdi 31 October 2014 (has links)
L’évolution du commerce international et la croissance des échanges intercontinentaux ont créé un besoin constant pour le transport de marchandises. Dans ce contexte, le transport maritime a connu un grand engouement vu son efficience pour la mobilité de grande quantité de marchandises. Ce mode de transport a été révolutionné par l’introduction des conteneurs, et le développement de nouvelles plateformes multimodales : les terminaux à conteneurs (TC), spécialisés dans la manutention des conteneurs. Ces derniers sont souvent soumis à des contraintes et des exigences qu'ils doivent satisfaire en termes d'efficience, de sécurité et de sûreté de fonctionnement. L’objectif de cette thèse est de gérer les risques liés au transport des conteneurs dans un TC tout en prenant en compte l’aspect collaboratif au niveau d’une chaîne logistique et les activités qui pourraient être réalisées en amont de la livraison des conteneurs. Ceci en garantissant une réconciliation des aspects gestion des risques et performance dans un TC. La mise en œuvre est basée sur une approche multi-paradigme permettant l’urbanisation du système de traçabilité GOST (Géo-localisation Optimisation et Sécurité de Transport) et le développement d’un Système de Gestion d’un Terminal à Conteneurs (SGTC). Concernant la gestion des risques liés au transport des conteneurs, une solution a été proposée en se basant sur la traçabilité et la géo-localisation en s’appuyant sur le système GOST moyennant son urbanisation, le concept de produit intelligent et des architectures orientées services. Le but de cette solution est d’améliorer la collecte des informations relatives à la gestion des risques fournies par les acteurs de la chaîne logistique. Pour ce faire, nous avons tout d’abord procédé à une urbanisation du système GOST afin de l’adapter aux nouvelles exigences. Ensuite, nous avons proposé un enrichissement du concept de produit intelligent afin de développer un modèle du conteneur intelligent approprié. Enfin, nous avons employé les architectures dirigées par les modèles afin d’automatiser la génération du code des services web pour la collecte des données de traçabilité. A cet effet, deux approches pour l’interfaçage du conteneur intelligent aux différents services web ont été proposées. La première est basée sur l’orchestration des services selon la logique des processus métiers. Quant à la seconde, elle est fondée sur l’utilisation d’un bus de communication l’ESB : Entreprise Service Bus.Toutes ces solutions sont intégrées dans le système SGTC qui s’appui sur la technologie Agent. Ce système intègre une approche de gestion des risques et l’évaluation de la performance du TC. L’approche de gestion des risques est basée sur deux processus. Le premier traite le ciblage des conteneurs suspects et est bâti autour d’un système expert enrichi par une méthode d’apprentissage forcé : l’algorithme Apriori. Le second prend en charge la vérification de la ségrégation spatiale durant l’entreposage. Enfin, une étude de cas a été réalisée afin de valider la solution proposée ainsi qu’une simulation pour l’évaluation de la performance. / The international trade evolution and the growth of intercontinental commercial exchanges have created an ongoing need for goods’ transport. In this context, maritime transport knew an enormous craze due to its efficiency for shipping large quantities of goods. This mode of transport has been revolutionized by the introduction of containers and the development of new multimodal platforms specialized in container handling: Container Terminals (CT). These CTs are subject to a set of constraints and requirements that must be satisfied in terms of efficiency, safety, and dependability. This thesis aims to manage the risks related to containers transport in a CT taking into account the collaborative aspect of the supply chain and the activities carried out before the containers’ delivery. Furthermore, it tackles reconciliation of the risk management aspect and performance aspect in CT. The implementation is based on a multi-paradigm approach for the urbanization of GOST traceability system (Geo-localization, Optimization, Securing, and Transport) and the development of a Container Terminal Management System (CTMS). For the risk management related to containers transport, we proposed a tracking and tracing solution based on the urbanization of GOST system, intelligent product concept and service-oriented architectures. This solution aims to improve the collection of information needed for risk management, which are provided by the supply chain actors. For this purpose, first of all, we propose an urbanization of the GOST system to fit t risk management requirements. In a second step, we define an improved intelligent product concept to develop an appropriate intelligent container model. Finally, we used the model driven architectures to automate code generation of web services needed to collect traceability data. For this purpose, two approaches for interfacing the intelligent container to different web services have been proposed. The first is based on services orchestration using business process. The second is founded on the configuration of an Enterprise Service Bus (ESB). All these solutions are integrated in the CTMS system. This system is developed using the Agent technology and aims to integrate risk management approach and the evaluation of the CT performance. Our risk management approach is based on two processes. The first deals with the suspicious containers targeting and it is based on an expert system enriched by a forced learning method: the Apriori algorithm. The second supports the verification of spatial segregation during storage. Finally, a case study was carried out to validate the proposed solution as well as a simulation to evaluate the performance.
222

Rapid-Chase Theory: The Influence of the Time of Invisible Stimulus Presentation on Movement Control

Flannigan, Jenna Catherine January 2015 (has links)
In the response priming paradigm, a small briefly presented visual stimulus (i.e., prime) is followed by a larger visible stimulus (i.e., mask) that renders the prime invisible and specifies the target location. According to the rapid-chase theory, the initial portion of the movement is dictated by the prime (initiation criterion) while the later portion is dictated by the mask (takeover criterion) and the prime is initially processed independently from the mask (independence criterion). The purpose of the first experiment was to determine if the processing of the prime and mask fit the predictions of the rapid-chase theory when the prime and mask are presented during an ongoing movement. The second experiment was designed to examine the impact of the prime when it is presented at various times throughout the execution of the movement. Participants initiated rapid pointing movements to a center target. On 1/3 of the trials, participants had to correct their movements to the left (or right) target in response to a left-pointing (or right-pointing) mask arrow, which was preceded by a neutral, left-, or right-pointing prime arrow. In Experiment 1, the prime was presented at movement onset and the mask randomly appeared 33, 50, or 67 ms after prime onset. In Experiment 2, the prime followed movement onset with a delay of 17, 33, or 50 ms and the mask was presented 50 ms after prime onset. In both experiments, participants first modified their movements in the direction indicated by the prime before completing their movements to the correct target in the majority of trials; thus, supporting the initiation and takeover criteria. However, the spatial priming effects did not follow the time course predicted by the independence criterion. Overall, the rapid-chase theory does not seem to apply to movement execution, but the prime is still able to influence the movement despite being presented later in the pointing trajectory.
223

Problémy on-line integrace systémů v bankovním prostředí při aplikaci SOA principů / Problems of on-line banking systems integration using SOA principles

Koten, Jiří January 2007 (has links)
This diploma thesis adresses on-line banking systems integration using SOA principles. The objective of this work is to define difficulties of integration and offer and analyze their possible solutions. Integration problems mostly pertain to the areas of service design and management, from both the service design and service run-time point of view. The work tries to combine SOA theoretical principles and author's work experience. The diploma thesis is divided into several chapters. First two chapters establish theoretical framework of the thesis and concentrate on describing the banking sector environment and defining banking IS characteristics impacting system integration endeavours. Moreover they try to define SOA and analyze banking SOA specifics. Next chapter describes actual IS architecture of the enterprise, whose problems will be analyzed in the practical part of the diploma thesis. Main part of the work goes into defining particular SOA integration issues. Every issue is analyzed and possible solutions are then offered with emphasis of impact on IS architecture. Main asset of the diploma thesis should be author's extensive work experience with systems integration using SOA principles.
224

Analýza a návrh integrační platformy v podminkách společnosti DATART International a.s. / Analysis and design of integration platform in environment of DATART International a.s.

Volkmer, René January 2008 (has links)
The master thesis deals with system integration in the company DATART International a.s. focusing on analysis of current information system and descriptions of the integration of applications. The first part is theoretical and the main attention is paid to definition of system integration and related subjects. Explanation of these terms is essential for understanding subsequent chapters. The following section is devoted to analyzing and mapping of current technical solution of company's integration of applications. The last part comprises of designed proposal of company's new possible IS/ICT architecture with its main technical elements and their functionality. Moreover, the portfolio of projects which are necessary for implementation of the proposed solution is designed in this part. The main goal of this work is to map and assess the current situation in the DATART company. Sub-goal is to design a new architecture IS/ICT and to design company portfolio of projects related to proposed architecture of IS/ICT in company DATART International a.s. These goals were fulfilled through deep analysis of the company's environment. This analysis was performed in the cooperation with colleagues, experts from related branches and thanks to high-quality literature and information sources used. The contribution of this work consists of mapping of possible solutions of system integration in DATART and their evaluation. Another benefit is the proposal of new architecture of IS/ICT.
225

Přístupy k transformaci popisu procesů do BPEL / Approaches to transformation of process description to BPEL

Císař, Daniel January 2009 (has links)
In this work, I dealt with the field of Business Process Managent and Service Oriented Architecture. First I tried a comprehensive conceptual view of both through the definition of important principles. In BPM as a disciline I identified "life-cycle" as the most important principle for process optimization tools. For service-oriented architecture, I had to reduce the view to important principles related to composition of services. An important starting point in my work are the definitions of processes and services and their roles in BPM systems. It is a simplified view that helps connect modeled processes to Web services. Web services and orchestration is the most popular and most common usage of the service-oriented architecture. Composition is another important building block of SOA and is the basis for more realistic goals of SOA, such as greater enterprise agility, more efficient utilization of resources in the enterprise, etc. BPM discipline combines multiple elements and as it is typicaly multidisciplinary it combines process management and optimization through tools. These tools historically perform their roles well, but companies are now in a very competitive linked environment and must to behave differently. In my work I have stated firstly why would these areas could be beneficial to each other. The next part focused, what is the relationship with the life-cycle process for BPM and how it fits into the life-cycle services in SOA. Finally, I analyzed the current state mapping of BPMN, the most common notation for expressing processes in BPM, to BPEL. BPEL describes a process, but it is expressed as a programmatic sequential process, which is also executed in digital form. At work I have examined the role of the new version of the BPMN notation 2.0.
226

Zhodnocení potenciálu BPM a SOA v organizaci za účelem zjištění vhodného integračního přístupu / Assessment of organisations BPM and SOA capabilities in order to determine an appropriate integration approach

Hnilička, Václav January 2011 (has links)
This thesis is focused on exploring the integration of BPM/SOA in order to identify the key aspects for successful integration. At the same time utilizing these aspects to evaluate organization's BPM/SOA integration initiative not only to determine how the organization is in this behavior but also to help design their own development plan. The thesis is based on an extensive literature study. In combination experts interviews analyzing various aspects of the integration of BPM/SOA. The main areas which have been examined and analyzed were the differences between BPM and SOA, challenges to integration, maturity models and proposed various approaches to achieve successful integration. The most important results and benefits of this thesis are critical success factors for integration BPM/SOA, integration approach and the assessment method integration. Critical success factors are derived from comprehensive analysis of best practices and common pitfalls practice. They included an assessment method that classifies organizations and determine the level of readiness for successful integration.
227

Efficient Web Services for End-To-End Interoperability of Embedded Systems

Kyusakov, Rumen January 2014 (has links)
As the number of Internet-connected devices rapidly grows, it has become ever more challenging to develop and maintain purpose-made tightly integrated distributed embedded systems. Instead, the Internet of Things (IoT) approach, based on standardized interfaces and open communication protocols, enables support for various applications with the possibility of extension to provide additional services that were not necessarily available at the initial deployment.This thesis presents methods and tools for the development of standard-based Web services for the Internet of Things. Some of the key challenges in using Web services on resource-constrained devices are due to the overhead of the communication protocols, which leads to the need for greater network bandwidth, processing power, and memory usage. A common solution to these problems is to use gateways that translate between the protocols used on one end of the connection (i.e. low-capability devices) and those on the other end (i.e. powerful Web servers). However, this increases the overall complexity of the system. The work presented herein answers the following research questions: 1) Is it feasible to deploy standard Web services on IoT systems without using application layer gateways? 2) What are the trade-offs in using Web services for end-to-end interoperability of resource-constrained embedded systems? 3) What levels of efficiency and functionality can be achieved using binary coding schemes for XML data exchange?The research questions are tested by building and evaluating several prototype IoT systems. These evaluations show that the use of Web services requires more powerful hardware (i.e. CPU and RAM) and a larger form factor in exchange for better interoperability compared to the use of ad hoc application protocols. The main challenge in employing embedded Web services is the large size of the messages, which is due to the use of verbose data formats such as XML. Although it is shown that it is possible to deploy XML-based Web services on low-capability devices without application layer gateways, this approach has severe performance limitations. Using the Efficient XML Interchange (EXI) binary coding scheme overcomes some of these limitations by substantially reducing the size of the XML messages. The main outcome of this thesis is the design and implementation of a software toolkit, called EXIP, for building EXI-based embedded Web services.The trade-offs in the use of embedded Web services are likely to change in the near future as the importance of application layer interoperability increases and IoT devices become faster, more energy efficient, and equipped with more memory. The dominating importance of interoperability can be seen in highly heterogeneous systems such as energy management systems (i.e. smart grids), where embedded Web services are already in use today. With this in mind, future research directions and extensions of this work include the development of performance optimization strategies for the EXIP toolkit to foster the expansion of embedded Web services to an even wider range of IoT applications. / Godkänd; 2014; 20140909 (rumkyu); Nedanstående person kommer att disputera för avläggande av teknologie doktorsexamen. Namn: Rumen Kyusakov Ämne: Industriell elektronik/Industrial Electronics Avhandling: Efficient Web Services for End-To-End Interoperability of Embedded Systems Opponent: Dr Frank Golatowski, Institute of Applied Microelements and CE, University of Rostock, Rostock-Warnemüende, Germany Ordförande: Biträdande professor Jens Eliasson, EISLAB, Institutionen för system- och rymdteknik, Luleå tekniska universitetet, Luleå Tid: Tisdag den 4 november 2014, kl. 13:00 Plats: A109, Luleå tekniska universitet / Embeddable EXI implementation in C, Architecture for Service-Oriented Process – Monitoring and Control, Arrowhead
228

Photonic-assisted RF Signal Processing based on Slow and Fast Light Technological Platforms

Sancho Durá, Juan 09 July 2012 (has links)
Los efectos de la luz lenta y luz rápida (SFL) han mostrado unas capacidades excepcionales sobre el control dinámico de la velocidad de la luz en diferentes medios. Una de las motivaciones más estimulantes redica en la potente aplicación de estos sistemas en el marco del procesado fotónico de señales de radio frecuencia (RF). En esta tesis doctoral, se evalúan las prestaciones de las plataformas de SFL actuales para desarrollar múltiples tareas que se requieren en el campo de la fotónica de microondas (MWP) con el valor añadido de sintonizabilidad y operación en banda ancha. En esta contexto, el scattering de Brillouin estimulado (SBS) tanto en fibra estándar como en fibra mantenedora de polarización (PMF), de redes Bragg (FBG), amplificadores ópticos de semiconductor (SOA) y cristales fotónicos (PhC) han sido las tecnologías bajo estudio. Desde escalas del orden de km hata mm, estas plataformas de SFL representan la evolución hacia la consolidación de componentes y subsistemas de MWP en circuitos fotónicos integrados (PIC). Diversos modelos analíticos y numéricos se han desarrollado con el objetivo de entender los procesos físicos que goboernan la porpagación a través de las diferentes plataformas de SFL, así como para describir los enfoques de MWP propuestos. Además, a través de las plataformas presentadas se ha llevado a cabo el análisis de las prestaciones de dos de las funcionalidades clave que se requieren para el procesado fotónico de señales de microondas, desfasadores sintonizables y retardos verdaderos (TTD). Se ha propuesto un sistema de TTD basado en la llamada técnica de sintonización separada de la portadora (SCT) a través de los efectos de SBS en fibrras estándr. Se ha evaluado la interacción del SBS en PMF con el propósito de desarrollar redes de Brillouin dinámicas (DBG), cuya fase generada ha sido fruto de estudio. Por otro lado, también se ha demostrado un sistema de densado distribuido basado en la reflexión continua de un pulso estrecho a lo la / Sancho Durá, J. (2012). Photonic-assisted RF Signal Processing based on Slow and Fast Light Technological Platforms [Tesis doctoral no publicada]. Universitat Politècnica de València. https://doi.org/10.4995/Thesis/10251/16471 / Palancia
229

Optické zesilovače pro metropolitní a přístupové sítě / Optical amplifiers for metropolitan and access networks

Čech, Martin January 2011 (has links)
Aim of this Master´s thesis is to describe and compare most common types of optical amplifiers used in today’s networks. The first section focuses on problematic of optical transmissions and phenomenon which cause degradation of transmitted signal. It is also explained in this section why there is a need to deploy optical amplifiers. Next section describes basic principles, structure and properties of individual types of optical amplifiers. Following section describes simulations which were made to compare the performance of transmission systems with each individual type of optical amplifier. The last section contains a design of optical metropolitan network with wavelength multiplex. Based on simulations from preceding part best amplifier type and optimal amplifier placement was selected. Functionality of the design was tested and simulations described in final section.
230

Konstrukce polovodičového optického zesilovače / Design of semiconductor optical amplifier

Somora, Rastislav January 2013 (has links)
Diploma thesis deals with the construction of a moder semiconductor optical amplifier SOA. In the first chapter optical comunication and the use of optical amplifiers is described. In the next chapter some types of optical fibers, their chemical composition and properties are described in detail. The third chapter overviews optical amplifiers, their use today, describes their advantages and disadvantages and their proper use in optical comunications. The fourth chapter describes the solution of the objective, the right layout of separate blocks and connections used in measurements. Fifth chapter describes used components, describes their basic parameters and proper use in circuit. The last chapter evaluates outputs of measurements and their impact on the objective.

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