Submitted by Samira Prince (prince@ufpa.br) on 2012-05-08T13:08:21Z No. of bitstreams: 2 Tese_MetodoDeterminacaoPontos.pdf: 650213 bytes, checksum: 32d05afe62a4a147ceaf368c9838222b (MD5) license_rdf: 23898 bytes, checksum: e363e809996cf46ada20da1accfcd9c7 (MD5) / Approved for entry into archive by Samira Prince(prince@ufpa.br) on 2012-05-08T13:10:29Z (GMT) No. of bitstreams: 2 Tese_MetodoDeterminacaoPontos.pdf: 650213 bytes, checksum: 32d05afe62a4a147ceaf368c9838222b (MD5) license_rdf: 23898 bytes, checksum: e363e809996cf46ada20da1accfcd9c7 (MD5) / Made available in DSpace on 2012-05-08T13:10:29Z (GMT). No. of bitstreams: 2 Tese_MetodoDeterminacaoPontos.pdf: 650213 bytes, checksum: 32d05afe62a4a147ceaf368c9838222b (MD5) license_rdf: 23898 bytes, checksum: e363e809996cf46ada20da1accfcd9c7 (MD5) Previous issue date: 2011 / ERICSSON Telecomunicações S.A. / Este trabalho apresenta um método para encontrar um conjunto de pontos de operação, os quais são ótimos de Pareto com diversidade, para linhas digitais de assinante (DSL - digital subscriber line). Em diversos trabalhos encontrados na literatura, têm sido propostos algoritmos para otimização da transmissão de dados em linhas DSL, que fornecem como resultado apenas um ponto de operação para os modems. Esses trabalhos utilizam, em geral, algoritmos de balanceamento de espectro para resolver um problema de alocação de potência, o que difere da abordagem apresentada neste trabalho. O método proposto, chamado de diverseSB , utiliza um processo híbrido composto de um algoritmo evolucionário multiobjetivo (MOEA - multi-objective evolutionary algorithm), mais precisamente, um algoritmo genético com ordenamento por não-dominância (NSGA-II - Non-Dominated Sorting Genetic Algorithm II), e usando ainda, um algoritmo de balanceamento de espectro. Os resultados obtidos por simulações mostram que, para uma dada diversidade, o custo computacional para determinar os pontos de operação com diversidade usando o algoritmo diverseSB proposto é muito menor que métodos de busca de “força bruta”. No método proposto, o NSGA-II executa chamadas ao algoritmo de balanceamento de espectro adotado, por isso, diversos testes envolvendo o mesmo número de chamadas ao algoritmo foram realizadas com o método diverseSB proposto e o método de busca por força bruta, onde os resultados obtidos pelo método diverseSB proposto foram bem superiores do que os resultados do método de busca por força bruta. Por exemplo, o método de força bruta realizando 1600 chamadas ao algoritmo de balanceamento de espectro, obtém um conjunto de pontos de operação com diversidade semelhante ao do método diverseSB proposto com 535 chamadas. / This work presents a method for finding diversity set operating points, which are Pareto optimal and diverse, to digital subscriber lines (DSL). Several works presented in the literature have proposed algorithms for optimizing data transmission in DSL lines, which results in a unique operating point for the modems. These works use spectrum balancing algorithms to solve the power allocation problem, which differs from the approach presented in this work. The proposed method, called diverseSB, uses a hybrid solution that consists of the non-dominated sorting genetic algorithm-II(NSGA-II), based on a multi-objective optimization, and a spectrum balancing algorithm. The simulation results showed that, for a given diversity, the computational cost for find the operating points with diversity using the diverseSB proposed algorithm is much smaller than “brute-force” search methods. In the proposed method, NSGA-II perform calls to the spectrum balancing algorithm adopted, so many tests involving the same number of calls to the algorithm were performed with the diverseSB proposed and with the brute-force search method, and the results of diverseSB proposed were better than brute-force search method. For example, to obtain a diverse set operating points the brute-force method performs 1,600 calls to the spectrum balancing algorithm and the diverseSB proposed performed 535 calls.

The purpose of this thesis is to describe and analyse the institutionalized Swedish Psychiatric practice during the period 1850 and 1970 - the era of the large mental hospitals - in terms of a modem disciplinary project. Point of departure relates to the meeting between the admitted patient and the educational work of the mental hospital and its everyday practice. The main sources of information for this study consists among other things of case sheets and texts closely related to the work of the mental hospitals. The study has two important aspects. The first deals with the normalized procedures in the practice of mental care, and draws the attention to the relation between social and cultural standards and the way the mental hospitals reviews, treats and handles the patient. The second aspect deals with the actual administration and the techniques of the hospital to correct the patient and his/her actions in a desirable direction. An overarching discussion deals with the relation between liberating and Controlling practitioners, and how the Controlling power of the hospital relates to the modem society's conception of a independent man. At the same time as the physical coercion of the mental hospital diminished, controlling methods were required which were not merely based on obedience and Submission, but also on the participation and will of the patient. Informal system of rewards, confession-techniques as well as various forms of a conditionalised and regulated freedom is combined with a more concealed potential of coercion of the institution. The compulsory work is being analysed as the most important educational therapy - both socially and ethically. Work is being described as a liberal Controlling technique. By connecting work to the system of rewards as well as increased physical freedom enables the hospital to exercise control and predictability without resorting to coercion. How the hospital looked upon and handled the sexual body, and how cultural conceptions regarding sexual normality dominated the practical care-taking is being analysed with the starting point in case sheets. The sexual behaviour, especially concerning women, resulted in a meeting of different opinions between restraining and testing practitioners where moral reliability was a condition for physical freedom. The thesis describes a movement over time towards increased physical freedoms for the patients of the mental hospitals. This did not imply that the control or the normalization decreased in intensity. But rather that the forms and the conditions for these processes changed. The freedom that was placed in sight was always connected with the well behaviour of the patient. / digitalisering@umu

Le sujet de cette thèse est la conception et la réalisation d'un modem radio COFDM et pouvant être utilisé dans le cadre des applications de la société ADVANTEN.<br />Le premier chapitre est consacré à l'étude des canaux de propagation et aux caractéristiques de la modulation OFDM.<br />Dans le second chapitre, des techniques de synchronisation du récepteur et d'estimation de canal sont présentées. La sélection et le dimensionnement d'une solution adaptée au besoin spécifique sont effectués dans ce chapitre.<br />Dans la suite de l'étude, des algorithmes de codage de canal sont comparés. Nous montrons comment ils permettent une amélioration notable de la qualité de la liaison radio. Des résultats de simulation convaincants sont présentés.<br />Le problème du rapport puissance instantanée à puissance moyenne des signaux OFDM est exposé. Une solution innovante pour réduire ce rapport est proposée.<br />Enfin, les résultats de la phase de réalisation du modem sont donnés dans le chapitre cinq.

Ett företag utvecklar en hisstelefon som är tänkt att användas av nödställda personer i en hiss. Hisstelefonen kan programmeras ute i fält av kund via ett antal olika gränssnitt. När nya mjukvaror utvecklas för hisstelefonen är test av de nya mjukvarorna i dagsläget väldigt tidskrävande då det krävs att en person manuellt testar hisstelefonens programmerbara funktioner. Detta projekt hade i syfte att verifiera och analysera den nuvarande manuella testrutinen för att sedan implementera ett automatiskt test. Detta skulle i sin tur ha i syfte att minska tidsåtgången för testansvarige och underlätta för utvecklingen av nya mjukvaror till hisstelefonen. Projektets mål var att implementera ett automatiskt test som skulle vara enkelt att använda och presentera resultat av testkörningar på ett övergripande sätt. Metoden för testprogrammet bygger på att ringa upp hisstelefonen via ett modem och med hjälp av modemet simulera telefonknapptryckningar över en dators serieport. Hur hisstelefonen reagerar på de simulerade telefonknapptryckningarna läses sedan av via en annan serieport på datorn.  För att underlätta för personen som testar loggas även all relevant utdata i en textfil som är enkel att följa för testansvarige. All fysisk utrustning för att kunna ringa och läsa från serieportarna tillhandahålls av företaget. Testprogrammet är utvecklat i Visual Studio 2017, skrivet i C/C++ och kan bara köras på en dator som kör Windows som operativsystem då specifika Windowsanrop används. Testkörningar av programmet har utförts och visar att testprogrammet kan testa de mjukvaror som finns tillgängliga för hisstelefonen. Trots att programmets exekveringstid är ungefär 40 minuter kan det ändå anses uppfylla syftet med att dra ner tidsåtgången och underlätta utvecklingen av nya mjukvaror då det presenterar om en viss programmeringssekvens kan programmeras eller inte på ett tydligt sätt. / A company develops an elevator phone that is intended to be used by distressed people in an elevator. The elevator phone can be programmed out in the field by customers through a number of different interfaces. When new software is developed for the elevator phone, testing of the new software is very time consuming, as it is necessary for a person to manually test the elevator phones programmable features. The aim of this project was to verify and analyze the current manual test routine and then implement an automated test. This would in turn be aimed at reducing the time required for the person responsible for testing and facilitating the development of new software for the elevatorphone. The goal of the project was to implement an automated test that would be easy to use and present results of test runs in a comprehensive manner. The test program method is based on dialing an elevator phone through a modem and use the modem to simulate phone button pressures over a computer serial port. How the elevator phone responds on the simulated  phone button pressures is then read through another serial port on the computer. To facilitate for the person who runs the test, all relevant output is logged in a text file that is easy to follow for the person that runs the test. All physical equipment for the project is provided by the company. The test program is developed in Visual Studio 2017, written in C/C++ and can only be run on a computer running Windows as an operating system, since specific Windows calls are used. Test runs of the program has been made and shows that the test program can test the available software for the elevator phone. Even though the execution time of the program is about 40 minutes, it still can be considered to fulfill the purpose of reducing time and facilitating the development of new software as it presents wheter a certain programming sequence can be programmed or not clearly.

Une modélisation de rugosité de faible amplitude d’une rugosité d’interface, à l’aide de méthodes ultrasonores, est proposée. On examine le cas d’une plaque élastique immergée dont l’une des faces est rugueuse. L’étude de la rugosité dont la géométrie est triangulaire et périodique repose sur l’analyse du coefficient de transmission par la plaque. Une simulation numérique basée sur la Méthode des Éléments Finis est réalisée. D’un autre côté, la théorie de Fiorito, Madigosky et Überall (FMU) de la plaque sans rugosité montre que le coefficient de transmission peut être compris comme une somme de résonances, chacune étant associée à un modèle de Breit et Wigner (BW). La position des pics de résonance, que ceux-ci soient relatifs aux modes symétriques ou antisymétriques sont peu affectées par la présence de la rugosité. Seules les largeurs et les amplitudes varient notablement. Les expériences numériques ont montré que ces pics sont interprétables comme des résonances BW. Une nouvelle modélisation basée sur un modèle rhéologique est établie pour le coefficient de transmission. A partir de celle-ci, un nouveau modèle BW a été développé et validé par la simulation numérique. Celui-ci modèle permet de remplacer avantageusement les simulations numériques coûteuses en temps, par un modèle analytique simple. / The modelling of roughness of small amplitude a rough interface, by using ultrasound methods is proposed. One investigates the case of an immersed elastic plate with only one corrugated face. The study of the roughness, the shape of which is triangular and periodic is based upon the analysis of the transmission coefficient. A numerical simulation using the Finite Element Method (FEM) is carried out. On the other hand, the Fiorito, Madigosky et Überall (FMU) theory of the flat plate shows that the transmission coefficient may be seen as a sum of resonances, each being associated with a Breit-Wigner (BW) resonance shape. The location of the resonance spikes peaks, which are related to either symmetric or antisymmetric modes, are not significantly affected by the roughness ; only the half widths and the magnitudes vary notably. The numerical experiments led with FEM on the corrugated plate showed that the spikes peaks can be interpreted as BW resonances.

This thesis investigates the appropriateness of a simplified, open-source digital image correlation (DIC) software for use in quasi-static, structural testing utilizing two-dimensional (2D) DIC measurements. DIC is a non-contact optical measurement technique that uses computer vision to track unique attributes on the surface of an object. For structural testing, traditional instrumentation such as displacement sensors and strain gages are impractical for full field measurements due their limited ability to capture large amounts of data. However, over the past decade, DIC has proven a successful method for full-field kinematics measurements, making it an appealing tool for collecting high densities of accurate data. This thesis specifically studies the accuracy and limitations of the DIC software, MODEM, for various test specimens and loading conditions. This research work is part of an experimental program comprised of three phases. The first stage was conducted by another investigator on aluminum coupons tested in pure tension. These results were used to calibrate parameters (speckle pattern density, lighting, and camera settings) used with the DIC software. The second stage included pure compression tests on concrete cubes and concrete cylinders to compare the difference in results between: (i) surface curvature, (ii) camera distance, (iii) surface treatment, and (iv) speckle pattern color. The final stage involved analysis of a tension test of a concrete prism completed at the University of Auckland in an effort to assess how MODEM could be utilized to accurately detect onset and propagation of concrete cracking. Results showed the most accurate DIC strains were within 5% error when compared to traditional instrumentation for aluminum loaded in tension and within 6% error for concrete loaded in compression/tension. This level of accuracy is comparable to existing open source and commercial DIC software utilizing 2D DIC analysis. Therefore, MODEM can be used to provide accurate 2D DIC strain measurements for small and medium scale structural test specimens when using the following parameters: (i) the surface of the specimen is planar, (ii) the camera is placed accordingly so the maximum amount of zoom can be used, (iii) the surface of a test specimen is free of debris or imperfections, and (iv) a high contrast and evenly distributed speckle pattern is used. Computational analysis of the results showed that known material properties can be used to calibrate, or remove errors from, the DIC results when traditional instrumentation is not available. Additionally, results showed MODEM strain contours can be used for initial detection of cracks in concrete loaded in tension while MODEM tracking performance can be used to characterize the centerline and orientation of cracks. The experimental tests provide critical information on how to set up, run, and analyze DIC results when using MODEM. The full field measurements are of value in providing accurate data for structural testing to develop a better understanding of material response and structural performance, since large-scale tests are typically limited by a sparse number of data points when using traditional instrumentation.

This diploma thesis deals with the design and testing of a system for powerline communication, enabling control of LED lights. The work first describes the basic principles of powerline communication, specifies the communication bands and summarizes the basic functional requirements for communication within the system for LED lighting control. It also describes the method of selecting a modem for powerline communication, the design of a test module with this modem and also the method of testing real communication between two test modules, including test results. The most comprehensive part of the work describes the design of hardware and software of the universal PLC module and how to use it. In addition, it referes to the development tools used as an example of implementation in LED lighting. At the end of the work are summarized the results of testing the proposed system.

This document describes a design procedure of interface between VGA camera and GSM/GPRS modem for displaying JPEG pictures captured by camera on website. Interface is realized by eight-bit micricontroller ATMEL with application written in C language. For picture transfer to server a TCP/IP stack is implemented into modem. The document is divided into two main parts. The first part describes architecture of the system, used components (camera, modem, microcontroller) and electronic circuit design. The second part of the document is focused on the software for the system. Firstly operating system of modem is desribed, OpenAT development environment for modem application design and WIPsoft library, which is used to implement TCP/IP stack. Next is described application for microcontroller which controlls camera and modem. Last part of this document describes server application and web interface.

The aim of this thesis is to innovate NCL 07 unit made by NAM system a.s. The new device is intended to have improved parameters and diminished dimensions. It should be fully comparable to similar products on market. In the first part there are described features and individual circuits of NCL07 unit. Further there is done an analysis to suggest modifications leading to reduce proportions of DPS and to enhance other parameters including SW design improvement. Theoretical part deals with selection of main measured values and methods of verification of measurement accuracy. There is also described theoretical basis used in the oncoming sections of the thesis. In the practical part there are presented procedures of designs of innovated product. In the conclusion there will be made testing of new unit and results will be compared to competitive commodities.

This semestral thesis contains information about a construction of a senzor network over power line systems. Those are divided with the reference to bandwidth. After the general description of the network there is the whole realisation of a drive unit and a sensor unit described and the design of data and power circuits is solved separately. The description of both units programs written in the ANSI C language is presented in the next chapter. The description of the network control by PC and a quantitative evaluation of the network reliability are also included.