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The Support Vector Machine (SVM) classification method has recently gained popularity due to the ease of implementing non-linear separating surfaces. SVM is an optimization problem with the two competing goals, minimizing misclassification on training data and maximizing a margin defined by the normal vector of a learned separating surface. We develop and implement new SVM models based on previously conceived SVM with L_1-Norm regularization with ramp loss error terms. The goal being a new SVM model that is both robust to outliers due to ramp loss, while also easy to implement in open source and off the shelf mathematical programming solvers and relatively efficient in finding solutions due to the mixed linear-integer form of the model. To show the effectiveness of the models we compare results of ramp loss SVM with L_1-Norm and L_2-Norm regularization on human organ microbial data and simulated data sets with outliers.

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This document, in conjunction with the body of work within the exhibition The Apparatus, challenges the dichotomy of practical and theoretical definitions of utility. Presented in two opposing formats, the work within this thesis attempts to re-examine the concept of utility as a spectrum, rather than in the binary structure of the practical (functional) and theoretical (aesthetical) methods of encounter. / October 2016

Submitted by Filipe dos Santos (fsantos@pucsp.br) on 2016-11-01T11:28:26Z No. of bitstreams: 1 Adelino de Castro Oliveira Simões Gala.pdf: 690615 bytes, checksum: b69f53d7454ee67a2ce7de053c466797 (MD5) / Made available in DSpace on 2016-11-01T11:28:26Z (GMT). No. of bitstreams: 1 Adelino de Castro Oliveira Simões Gala.pdf: 690615 bytes, checksum: b69f53d7454ee67a2ce7de053c466797 (MD5) Previous issue date: 2016-08-29 / Coordenação de Aperfeiçoamento de Pessoal de Nível Superior / In the context of an era where reality is permeated by machines, this work addresses the subject matter of machines from the standpoint of what are physical, semiotic and ontological machines. Such concepts of machine will be presented in chapters entirely dedicated to each one of these perspectives. The goal is to produce confrontations between these machine conceptions, applying them to the analysis of the computer as an object and to extract the continuities and discontinuities existing in this debate, in order to operationalize these understandings in the conclusion. Therefore, the start point is the research hypothesis that there are continuities and discontinuities in these discussions. The methodology employed is a deductive one, where the track followed is the detailed description of the concepts and ideas proposed, supported by authors who are recognized experts in the subject matter. As a result, the present work achieves a broader understanding of what are machines, both in depth and extension, beyond the usual principles found in the discussions of the physical machines / No contexto de uma era onde a realidade está permeada por máquinas, este trabalho aborda o tema das máquinas a partir da compreensão do que são máquinas físicas, máquinas semióticas e máquinas ontológicas. Cada concepção de máquina será apresentada em um capítulo inteiramente dedicado a cada uma dessas perspectivas. O objetivo é produzir confrontações dessas concepções de máquinas, analisando o objeto computador, e extrair as continuidades e descontinuidades nesse debate de modo a operacionalizar esses entendimentos na conclusão. Portanto, parte-se da hipótese de pesquisa de que existem continuidades e descontinuidades nessas discussões. A metodologia a ser empregada é a dedutiva, onde o caminho percorrido é o da descrição detalhada dos conceitos e ideias propostas com suporte em autores que são reconhecidamente especialistas no tema. Como resultado, se alcança uma compreensão ampliada do que são máquinas, tanto em profundidade como em extensão, para além dos preceitos usuais encontrados nas discussões sobre máquinas físicas

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The notion of structural effects in gaming machine play is increasingly gaining importance in the gambling literature. The development of gaming machines in Australia has seen a large number of machine characteristics become an inherent part of poker machine play. However, there is an absence of studies examining their effect. Two studies were undertaken examining the relationship between the structural characteristics of poker machines and player expenditure patterns. The first study examined aggregated player data from over 1000 poker machines. The results suggest that both measures of expenditure utilised, stake size and net profit, are related to structural characteristics. This finding provided a foundation for the theoretical discussion of individual player behaviour encompassing both learning and cognitive paradigms. The second study examined the expenditure patterns of 533 individual players in an ecologically valid setting. The results indicate that player stake size is related to certain structural characteristics but player net loss is not. These results failed to support the predictions of operant conditioning. A model of structural effects is proposed and the theoretical implications for future studies of gaming behaviour are discussed / Doctor of Philosophy (PhD)

Parallax is a distributed storage system that uses virtualization to provide storage facilities specifically for virtual environments. The system employs a novel archi-tecture in which storage features that have traditionally been implemented directly on high-end storage arrays and switches are relocated into a federation of storage VMs, sharing the same physical hosts as the VMs that they serve. This architecture retains the single administrative domain and OS agnosticism achieved by array- and switch-based approaches, while lowering the bar on hardware requirements and facilitating the development of new features. Parallax offers a comprehensive set of storage features including frequent, low-overhead snapshot of virtual disks, the “gold-mastering” of template images, and the ability to use local disks as a persistent cache to dampen burst demand on networked storage.

This study considers the dynamic pedestrian detection system and the static pedestrian detection system with a single camera. In the static detection system, this study reconstructs the static database. As to feature extraction, HOG combining with SVM classifier is used in this study. Experimental results show the database can detect people by this algorithm in several scenes. In the dynamic detection system, because the population of older persons and disabled persons increases gradually nowadays, cross the intersection is a challenge for older persons and disabled persons, so this study researches in dynamic pedestrian detection system by a single camera for assisting autonomous transport robots, and this system detects people at the intersection for assisting older persons and disabled persons when they cross the intersection. As to the algorithm this study uses the foot detection algorithm to detect dynamic pedestrians. According to the experimental results, the light and clothes effect on the experimental results both in the dynamic pedestrian system and the static pedestrian system. The dynamic pedestrian system still shows real-time performance not only in the longitudinal direction but also in the lateral direction.

Multi-phase motors have several advantages over the traditional three-phase motors. In this study, the additional degrees of freedom available in five-phase permanent magnet motors have been used for three purposes: 1) enhancing the torque producing capability of the motor, 2) improving the reliability of the system, and 3) better adjusting of the torque and flux linkages of the five-phase direct torque controlled system. 1) Due to the fact that space and time harmonics of the same orders will contribute positively to output torque, a five-phase permanent magnet motor with quasi-rectangular back-EMF waveform is supplied with combined fundamental and third harmonic of currents. For modeling and analysis of the motor a 0 3 3 1 1 q d q d frame of reference is defined where 1 1q d rotates at the synchronous speed and 3 3q d rotates at the three times synchronous speed. Based on the mathematical model in the 0 3 3 1 1 q d q d frame of reference, it is shown that this system while having a higher torque density with respect to a conventional permanent magnet synchronous machine, is also compatible with vector control algorithm. 2) A resilient current control of the five-phase permanent motor with both sinusoidal and trapezoidal back-EMF waveforms under asymmetrical fault condition is proposed. In this scheme, the stator MMF is kept unchanged during healthy and faulty condition. Therefore, the five-phase permanent magnet motor operates continuously and steadily without additional hardware and just by modifying the control algorithm in case of loss of up to two phases. The feature is of major importance in some specific applications where high reliability is required. 3) High torque and flux ripple are the major drawbacks of a three-phase direct torque controlled system. The number of space voltage vectors directly influences the performance of DTC system. A five-phase drive, while benefiting from other advantages of high order phase drives, has inherently 32 space voltage vectors which permits better flexibility in selecting the switching states and finer adjustment of flux and torque. A sensorless direct torque control of five-phase permanent magnet motor is implemented. Speed information is obtained based on the position of stator flux linkages and load angle. Experiments have been conducted on a 5kW five-phase surface mount permanent magnet motor and a 3kW five-phase interior permanent magnet motor by using TMS320C32 DSP. The results obtained are consistent with theoretical studies and simulation analysis, which further demonstrate the feasibility and practical significance of the five-phase permanent magnet motor drives.