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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.
11

Proposta de um ambiente virtual de apoio à reabilitação funcional de membros superiores utilizando o sensor de captura de movimentos da microsoft kinect / Proposal of a virtual environment to support the functional upper limbs rehabilitation using the microsoft kinect movement sensor

Leopoldino, Fabrício Leonard 18 September 2013 (has links)
Submitted by Marlene Santos (marlene.bc.ufg@gmail.com) on 2014-10-15T21:29:54Z No. of bitstreams: 2 Dissertacao - Fabrício Leonardo Leopoldino - 2013.pdf: 15282157 bytes, checksum: d2e674ff7b57f0a88c10f3ee9a9b248d (MD5) license_rdf: 23148 bytes, checksum: 9da0b6dfac957114c6a7714714b86306 (MD5) / Approved for entry into archive by Jaqueline Silva (jtas29@gmail.com) on 2014-10-16T17:22:45Z (GMT) No. of bitstreams: 2 Dissertacao - Fabrício Leonardo Leopoldino - 2013.pdf: 15282157 bytes, checksum: d2e674ff7b57f0a88c10f3ee9a9b248d (MD5) license_rdf: 23148 bytes, checksum: 9da0b6dfac957114c6a7714714b86306 (MD5) / Made available in DSpace on 2014-10-16T17:22:45Z (GMT). No. of bitstreams: 2 Dissertacao - Fabrício Leonardo Leopoldino - 2013.pdf: 15282157 bytes, checksum: d2e674ff7b57f0a88c10f3ee9a9b248d (MD5) license_rdf: 23148 bytes, checksum: 9da0b6dfac957114c6a7714714b86306 (MD5) Previous issue date: 2013-09-18 / This study proposes a Virtual Environment to support the functional rehabilitation of the upper limbs, using the Microsoft Kinect sensor motion capture. It is organized in five chapters: 1) Use of Virtual Environments in the process of functional rehabilitation of people affected by an Encephalic Vascular Accident; 2) Technologies used, 3) AVARFMS development; 4) Discussion; 5) Conclusions. Sequelae of Encephalic Vascular Accident impair the development of the Activities of Daily Living. Rehabilitation does not consist in a process that seeks only the adaptation of the patient, but in a real effort with the goal of promoting the development of people creative and inclusive functionality. With the emergence of Virtual Environments and greater integration between the areas of rehabilitation medicine and information systems as well as the appearance of low cost motion sensors (Microsoft Kinect, for example), a new paradigm begins to be postulated between researchers in these two areas: the study and development of virtual environments to assist in the rehabilitation process. With the goal of providing a fun tool to patients who have been affected by an encephalic vascular accident and offering therapists ways to measure (qualitatively and quantitatively) the evolution of the patient treatment, it is proposed a virtual environment that uses the motion sensor Kinect, created by Microsoft. The findings presented in this study show that the proposed objectives were achieved. / O presente trabalho propõe um ambiente virtual de apoio à reabilitação funcional de membros superiores, utilizando o sensor de captura de movimento da Microsoft, Kinect. Está dividido em cinco capítulos: 1) Utilização de Ambientes Virtuais no Processo de Reabilitação Funcional de Pessoas Acometidas por um Acidente Vascular Encefálico; 2) Tecnologias Utilizadas; 3) Desenvolvimento do AVARFMS; 4) Discussão e 5) Conclusões. O Acidente Vascular Encefálico (AVE) deixa sequelas que comprometem o desenvolvimento das Atividades de Vida Diária. A reabilitação não consiste em um processo que busca apenas a adaptação do paciente, mas em um esforço concreto, com o objetivo de promover o desenvolvimento máximo da funcionalidade criadora e inclusiva das pessoas. Com o surgimento dos Ambientes Virtuais (AVs) e a maior integração entre as áreas da medicina de reabilitação e sistemas de informação, bem como o aparecimento de Sensores de Movimento (Microsoft Kinect, por exemplo) de baixo custo, um novo paradigma começa a ser postulado entre pesquisadores destas duas áreas: o estudo e desenvolvimento de AVs para auxiliar no processo de reabilitação. Com o objetivo de fornecer uma ferramenta divertida aos pacientes que foram acometidos por um AVE e oferecer aos terapeutas maneiras de medir (qualitativamente e quantitativamente) a evolução do tratamento de um paciente, é proposto um Ambiente Virtual que utiliza o sensor de movimentos Kinect, criado pela Microsoft. As conclusões apresentadas neste trabalho mostram que os objetivos propostos pelo ambiente foram atingidos
12

The Feasibility of Using a Markerless Motion Capture Sensor (Leap Motion<sup>TM</sup> Controller) forQuantitative Motor Assessment Intended for a Clinical Setting

Kincaid, Clay Jordan 01 December 2016 (has links)
Although upper limb motor impairments are common, the primary tools for assessing and tracking these impairments in a clinical setting are subjective, qualitative rating scales that lack resolution and repeatability. Markerless motion capture technology has the potential to greatly improve clinical assessment by providing quick, low-cost, and accurate tools to objectively quantify motor deficits. Here we lay some of the groundwork necessary to enable markerless motion capture systems to be used in clinical settings. First, we adapted five motor tests common in clinical assessments so they can be administered via markerless motion capture. We implemented these modified tests using a particular motion capture sensor (Leap MotionTM Controller, hereafter referred to as the Leap Motion sensor) and administered the tests to 100 healthy subjects to evaluate the feasibility of administrating these tests via markerless motion capture. Second, to determine the ability of the Leap Motion sensor to accurately measure tremor, we characterized the frequency response of the Leap Motion sensor. During the administration of the five modified motor tests on 100 healthy subjects, the subjects had little trouble interfacing with the Leap Motion sensor and graphical user interface, performing the tasks with ease. The Leap Motion sensor maintained an average sampling rate above 106 Hz across all subjects during each of the five tests. The rate of adverse events caused by the Leap Motion sensor (mainly jumps in time or space) was generally below 1%. In characterizing the frequency response of the Leap Motion sensor, we found its bandwidth to vary between 1.7 and 5.5 Hz for actual tremor amplitudes above 1.5 mm, with larger bandwidth for larger amplitudes. To improve the accuracy of tremor measurements, we provide the magnitude ratios that can be used to estimate the actual amplitude of the oscillations from the measurements by the Leap Motion sensor. These results suggest that markerless motion capture systems are on the verge of becoming suitable for routine clinical use, but more work is necessary to further improve the motor tests before they can be administered via markerless motion capture with sufficient robustness for clinical settings.
13

Metodika využití dat digitálních tachografů v soudním inženýrství / The methodology of using digital tachograph data for forensic engineering purposes

Zeman, Petr January 2018 (has links)
Control authorities and experts in their practice come across digital tachographs. Digital data is an important source of relevant input data and informations needed for in depth road accident analysis. In practice, it is possible to encounter an existing negative phenomenon, an unauthorised access to and fraudulent manipulation of the tachograph´s data. False data has a major impact on the results of the accident investigation and analysis. Control authorities and experts should be prepared for such cases. This thesis describes the different types of manipulation of Digital Tachograph records and the ways of their detection. Tachograph manipulation is a nowaday issue. It is very important to deal with this problem. For the reasons mentioned above I have set up a Data Control Procedure Standard for control authorities and experts and drafted technical requirements for future generation of tachographs.
14

Speciální bezpečnostní systém / Special security system

Náhlík, Ondřej January 2015 (has links)
This master’s thesis is focused on design and realisation of special security system for space and property protection. System is devided into two parts, transmitting and receiving. Transmitting part is formed by Raspberry Pi Model B+, motion sensor, webcam and USB LTE modem Huawei E398. Receiving part consists of computer with suitable application for communication with FTP server. Data transfer in mobile systems is described in the first part of this thesis, transmitting part is designed in the second part. There is one transmitting option chosen in the third part and there are also described applications of the transmitting part. The last part of this thesis is focused on the receiving part and its application.
15

Investigating the impact of nudging on customers’ behavior : A retail store experiment with IoT devices

Ferm, Robert January 2021 (has links)
Between 4000-10 000 ads each day every day. That is how many ads we as customers are exposed to individually, each and every day. To reach a higher efficiency in marketing, marketing managers and store owners nowadays aiming to increase the customer satisfaction by striving to understand the customer behavior and their decisioning-making. For the aim of this thesis, we investigated if coloring cues in the retail environment had an impact on customers’ behavior in a specific retail store environment. This experiment was taken place in a small town within Sweden, named Karlstad. The retail store belongs to the electronic sector and the participants included in the experiment were randomly visiting customers of this electronical retail store. In the experiment we used IoT devices from Texas Instruments, a sensor device, called CC2650, enabled us to collect data from interactions by customers and products. In our experiment we compared three periods of data with the help from the analysis method of one-way ANOVA. The result was showing that there is a significant variance between at least two of our three periods of measurements, and by the results of this thesis we could reject the Null Hypothesis (H0). As the H0, were telling that there would not be any differences between any of the three measured periods of time. Further, with insights from our one-way ANOVA, we could determine with help from a complementary analysis method, the Tukey’s HSD, we could point out which periods that were significant different from one another. This made us come into conclusions that there is a possibility to predict the customer behavior and the customer’s Need for Touch (NFT), a part of the nudging theory, and can give the marketing managers and store owners in retail an increase of understanding of the customer’s behavior. Future research could look into how customer’s behavior can change within different type of retail stores, and also if coloring cues in retail stores within bigger cities will have another impact on customer’s behavior.
16

The suitability of LoRaWAN for battery powered security solutions

Galiulina, Irina, Karlstén, Patrik January 2018 (has links)
Many conventional forms of communication technology, such as Wi-Fi, 3G/4G or cable, require a lot of power. For battery powered devices that need to last a long time on a single charge, one alternative is the low-power, long range technology LoRaWAN. This thesis tries to answer the question how well do the properties of LoRaWAN meet the requirements for a battery powered security solution? Two identical prototype remote motion detectors were implemented for this purpose. The results show that while the prototypes do not meet the requirements for energy efficiency, LoRaWAN as a technology easily does. The results shows that if a solution to the reliability issues can be found, LoRaWAN would be well suited for battery powered security solutions. / Många vanliga teknologier som används för kommunikation, så som Wi-Fi, 3G/4G eller fiber, kan vara väldigt strömkrävande. Ett alternativ för batteridrivna enheter som behöver kunna klara sig på en laddning under lång tid, är att använda en lågenergiteknologi med lång räckvidd LoRaWAN. Den här rapporten försöker att besvara frågan om hur väl LoRaWANs egenskaper tillgodoser de krav som ställs på batteridrivna säkerhetslösningar. För detta ändamål utvecklades två identiska prototyper av en batteridriven rörelsesensor. Resultaten visar på att även om prototyperna inte möter energikonsumptionskraven, så gör själva LoRaWAN-tekniken detta. Resultaten visar att om man kan hitta lösningar på problemen med pålitligheten hos LoRaWAN, så kan LoRaWAN mycket väl vara lämpligt för batteridrivna säkerhetslösningar.
17

Habitudes de vie et contrôle glycémique chez des adultes atteints de diabète de type 1 : des barrières envers l’activité physique au calcul des glucides.

Brazeau, Anne-Sophie 12 1900 (has links)
Le diabète de type 1 (DT1) est une maladie complexe qui requiert une implication importante des patients pour contrôler leur glycémie et ainsi prévenir les complications et comorbidités. L’activité physique (AP) régulière et une attention constante pour les glucides ingérés sont des adjuvants essentiels au traitement insulinique. Nous avons démontré que le questionnaire BAPAD-1, spécifiquement développé pour des adultes atteints de DT1, est un outil valide (validité prédictive, fiabilité interne et reproductibilité) pour définir des barrières associées à l’AP. Bien que le niveau de barrières envers l’AP soit faible, la crainte de l’hypoglycémie est la barrière la plus importante chez cette population. L’adoption d’un mode de vie actif est associée à un profil corporel favorable. Les adultes, avec un DT1 et non diabétique, qui maintiennent un bon niveau d’AP, soit un ratio entre la dépense énergétique totale et celle au repos ≥ 1.7, ont une masse grasse, un indice de masse corporelle et un tour de taille significativement inférieurs à ceux d’adultes moins actifs. Le niveau d’AP peut être estimé au moyen d’un moniteur d’AP comme le SenseWear Armband™. Afin de compléter les études de validation de cet outil, nous avons évalué et démontré la reproductibilité des mesures. Toutefois, la dépense énergétique est sous-estimée durant les 10 premières minutes d’une AP d’intensité modérée sur ergocycle. L’utilisation de cet appareil est donc justifiée pour une évaluation de la dépense énergétique sur de longues périodes. Le calcul des glucides est une méthode largement utilisée pour évaluer la quantité d’insuline à injecter lors des repas. Nous avons évalué dans un contexte de vie courante, sans révision de la technique, la précision des patients pour ce calcul. L’erreur moyenne est de 15,4 ± 7,8 g par repas, soit 20,9 ± 9,7 % du contenu glucidique. L’erreur moyenne est positivement associée à de plus grandes fluctuations glycémiques mesurées via un lecteur de glucose en continu. Une révision régulière du calcul des glucides est probablement nécessaire pour permettre un meilleur contrôle glycémique. Nous avons développé et testé lors d’un essai clinique randomisé contrôlé un programme de promotion de l’AP (PEP-1). Ce programme de 12 semaines inclut une séance hebdomadaire en groupe ayant pour but d’initier l’AP, d’établir des objectifs et d’outiller les adultes atteints de DT1 quant à la gestion de la glycémie à l’AP. Bien que n’ayant pas permis d’augmenter la dépense énergétique, le programme a permis un maintien du niveau d’AP et une amélioration de la condition cardio-respiratoire et de la pression artérielle. À la fin du programme, une plus grande proportion de patients connaissait la pharmacocinétique de l’insuline et une plus grande variété de méthodes pour contrer l’hypoglycémie associée à l’AP était utilisée. En conclusion, le diabète de type 1 engendre des défis quotidiens particuliers. D’une part, le calcul des glucides est une tâche complexe et son imprécision est associée aux fluctuations glycémiques quotidiennes. D’autre part, l’adoption d’un mode de vie actif, qui est associée à un meilleur profil de composition corporelle, est limitée par la crainte des hypoglycémies. Le programme PEP-1 offre un support pour intégrer l’AP dans les habitudes de vie des adultes avec un DT1 et ainsi améliorer certains facteurs de risque cardio-vasculaire. / Type 1 diabetes (T1D) is a complex disease requiring continuous self-management. Physical activity (PA) and carbohydrate counting are essential counterparts to insulin therapy for blood glucose control in order to prevent complications and comorbidities. We have demonstrated the validity (predictive validity, internal validity and reproducibility) of the BAPAD-1 scale to assess perceived barriers associated with PA practice. Fear of hypoglycemia is the strongest perceived barrier among adults with T1D. An active lifestyle, as described by a physical activity level (ratio of total over resting energy expenditure) ≥ 1.7, is associated with a better body composition compared to less active adults. Adults who are more active show significantly less fat mass, smaller body mass index and smaller waist circumference. Motion sensors, like the SenseWear Armband™, are useful to estimate PA level. To complement prior validation studies, we evaluated and confirmed the reproducibility of the SenseWear Armband™ measurements. However, we also observed that energy expenditure is underestimated at the onset of moderate intensity ergocycling. Thus, this motion sensor should be used to evaluate energy expenditure over long periods of time rather than short length exercise. Carbohydrate counting is a widely used method to evaluate prandial insulin doses. We evaluated, in a real-life setting without prior method revision, the accuracy of adults with T1D for carbohydrate estimation. The mean meal error was 15.4 ± 7.8 g or 20.9 ± 9.7 % of total carbohydrate content. The mean meal error was positively associated with larger daily glucose fluctuations measured by a continuous glucose monitoring system. Regular educational tips regarding carbohydrate counting may be necessary to improve glycemic control. In order to improve PA practice, we developed and tested in a randomized controlled trial a PA promotion program (PAP-1). This 12-week program includes a weekly group session designed for PA initiation, goal setting and improving knowledge about glycemic control during PA. Even if the program failed to improve total energy expenditure, participants improved their cardiorespiratory fitness and blood pressure. At the end of the program, a larger proportion of the participants were knowledgeable of insulin pharmacokinetics and they used more various methods to prevent hypoglycemia related to PA. In conclusion, type 1 diabetes obtrudes many daily challenges. On one hand, carbohydrate counting is a complex job and its inaccuracy is associated with glycemic fluctuations. On the other hand, even if having an active lifestyle is associated with a better body composition, fear of hypoglycaemia may impede PA practice. The PAP-1 program offers support to adults with T1D to adopt an active lifestyle and thus improve some cardivascular risk factors.
18

Habitudes de vie et contrôle glycémique chez des adultes atteints de diabète de type 1 : des barrières envers l’activité physique au calcul des glucides

Brazeau, Anne-Sophie 12 1900 (has links)
No description available.
19

Methods and technologies for the analysis and interactive use of body movements in instrumental music performance

Visi, Federico January 2017 (has links)
A constantly growing corpus of interdisciplinary studies support the idea that music is a complex multimodal medium that is experienced not only by means of sounds but also through body movement. From this perspective, musical instruments can be seen as technological objects coupled with a repertoire of performance gestures. This repertoire is part of an ecological knowledge shared by musicians and listeners alike. It is part of the engine that guides musical experience and has a considerable expressive potential. This thesis explores technical and conceptual issues related to the analysis and creative use of music-related body movements in instrumental music performance. The complexity of this subject required an interdisciplinary approach, which includes the review of multiple theoretical accounts, quantitative and qualitative analysis of data collected in motion capture laboratories, the development and implementation of technologies for the interpretation and interactive use of motion data, and the creation of short musical pieces that actively employ the movement of the performers as an expressive musical feature. The theoretical framework is informed by embodied and enactive accounts of music cognition as well as by systematic studies of music-related movement and expressive music performance. The assumption that the movements of a musician are part of a shared knowledge is empirically explored through an experiment aimed at analysing the motion capture data of a violinist performing a selection of short musical excerpts. A group of subjects with no prior experience playing the violin is then asked to mime a performance following the audio excerpts recorded by the violinist. Motion data is recorded, analysed, and compared with the expert’s data. This is done both quantitatively through data analysis xii as well as qualitatively by relating the motion data to other high-level features and structures of the musical excerpts. Solutions to issues regarding capturing and storing movement data and its use in real-time scenarios are proposed. For the interactive use of motion-sensing technologies in music performance, various wearable sensors have been employed, along with different approaches for mapping control data to sound synthesis and signal processing parameters. In particular, novel approaches for the extraction of meaningful features from raw sensor data and the use of machine learning techniques for mapping movement to live electronics are described. To complete the framework, an essential element of this research project is the com- position and performance of études that explore the creative use of body movement in instrumental music from a Practice-as-Research perspective. This works as a test bed for the proposed concepts and techniques. Mapping concepts and technologies are challenged in a scenario constrained by the use of musical instruments, and different mapping ap- proaches are implemented and compared. In addition, techniques for notating movement in the score, and the impact of interactive motion sensor systems in instrumental music practice from the performer’s perspective are discussed. Finally, the chapter concluding the part of the thesis dedicated to practical implementations describes a novel method for mapping movement data to sound synthesis. This technique is based on the analysis of multimodal motion data collected from multiple subjects and its design draws from the theoretical, analytical, and practical works described throughout the dissertation. Overall, the parts and the diverse approaches that constitute this thesis work in synergy, contributing to the ongoing discourses on the study of musical gestures and the design of interactive music systems from multiple angles.

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