Tesis sobre el tema "Muscle Information"
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Grönlund, Christer. "Spatio-temporal processing of surface electromyographic signals : information on neuromuscular function and control /". Umeå : Umeå universitet, 2006. http://urn.kb.se/resolve?urn=urn:nbn:se:umu:diva-958.
Texto completoNassif, Christina. "Delineating the role of caspase-mediated cleavage of HuR during muscle fiber information". Thesis, McGill University, 2011. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=103597.
Texto completoDurant la formation des muscles, des stimulis endogènes et exogènes induisent la différentiation de cellules mononuclées en cellules de la lignée myogénique qui vont ensuite fusionner pour former des fibres musculaires multinuclées. Les mécanismes moléculaires entourant ce processus mettent en jeu des facteurs régulateurs de la myogenèse, les MRFs, qui sont eux-mêmes très finement contrôlés. Bien que la transcription joue un rôle très important dans ce processus, seule, elle ne peut pas maintenir le niveau élevé d'expression des MRFs. Dans ce mémoire j'étudie un aspect de la régulation post-transcriptionnelle, notamment le rôle de HuR, une protéine qui se lie spécifiquement aux éléments riches en AU (ARE) dans les régions 3’non traduites (3’UTRs) des ARN messagers comme MyoD et myogenin. Mes expériences démontrent que durant la différentiation musculaire, HuR est clivée par les caspases au niveau de l'acide aminé aspartate (D) 226 qui se situe dans un domaine important pour le mouvement de HuR du noyau au cytoplasme et l'inverse, avec l'aide de l'importine Transportin 2 (Trn2). Le déclenchement de la différentiation suscite le mouvement de HuR vers le cytoplasme, un évènement suivi par son clivage qui génère deux produits HuR CP2 et HuR-CP1. Ce dernier ayant une affinité pour Trn2, rentre en compétition avec HuR et prévient ainsi son mouvement vers le noyau. L'accumulation de HuR dans le cytoplasme permet donc de stabiliser les ARNm pro-myogéniques plus longtemps et de favoriser la différentiation. L'association de HuR-CP1 avec Trn2 m'a aussi menée à étudier les partenaires potentiels des produits de clivage par rapport à HuR. Mes expériences de Pull down ont généré de longues listes que j'ai pu comparer. Dans le but de voir si les protéines qui s'associent aux messages MyoD et myogenin se lient à HuR ou aux produits de clivage j'ai fait une expérience de biotinylation du 3’UTR des messages mentionnés. Malgrès le fait de ne pas avoir eu le temps de vérifier ces associations, j'ai pu repérer une protéine hnRNPK qui a était étudiée dans la neurogenèse et qui antagonise l'effet de protéines Hu dans ce processus. Cette protéine semble s'associer à HuR, les produits de clivages et les messages. Cela étant donné, je pense que ce serait intéressant de valider cette association en plus des autres mentionnées dans mon mémoire et d'étudier leurs importances dans la myogenèse.
Grönlund, Christer. "Spatio-temporal processing of surface electromyographic signals : information on neuromuscular function and control". Doctoral thesis, Umeå universitet, Institutionen för strålningsvetenskaper, 2006. http://urn.kb.se/resolve?urn=urn:nbn:se:umu:diva-958.
Texto completoKHALIL, ULLAH XXX. "Extraction of Muscle Anatomical and Physiological Information from Multi-Channel Surface EMG Signals: Applications in Obstetrics". Doctoral thesis, Politecnico di Torino, 2016. http://hdl.handle.net/11583/2642318.
Texto completoMasuda, Shinya. "Adaptation of cytoskeletal and sarcolemmal proteins for functional requirements - new information for the development of fatigue resistance in skeletal muscle -". Kyoto University, 2009. http://hdl.handle.net/2433/123932.
Texto completo0048
新制・課程博士
博士(人間・環境学)
甲第14717号
人博第453号
新制||人||111(附属図書館)
20||人博||453(吉田南総合図書館)
UT51-2009-D429
京都大学大学院人間・環境学研究科共生人間学専攻
(主査)准教授 林 達也, 教授 森谷 敏夫, 教授 小田 伸午, 教授 田口 貞善
学位規則第4条第1項該当
Rahman, Md Arifur. "A comparative study to explore the advantages of passive exoskeletons by monitoring the muscle activity of workers". Thesis, Högskolan i Gävle, Avdelningen för elektroteknik, matematik och naturvetenskap, 2021. http://urn.kb.se/resolve?urn=urn:nbn:se:hig:diva-35150.
Texto completoYang, Yujie. "Sensorial Pads: Awareness of muscle and skin movements on the breast through looking and feeling". Thesis, KTH, Skolan för elektroteknik och datavetenskap (EECS), 2020. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-281755.
Texto completoAtt förstå bröst är ett ämne relaterat till kvinnors dagliga liv. Syftet med detta projektär att utforska beteendet med bröstigenkänning ur kvinnors perspektiv och är avsett att utforma en fysisk upplevelse som hjälper till att förstå bröstmuskel- och hudrörelser. Denna avhandling undersöker betydelsen och metoderna för bröstigenkänning från ett tidigt skede och förklarar hela processen från preliminär forskning till prototypprocedurer. Med hjälp av konceptet och designmetoden för soma design, ta reda på vilken typ av interaktion som kan beskrivas i medvetenhet om brösten. Forskningsprocessen och designresultaten syftar till att föreslå en ny interaktiv designmetod för bröstkognition och utforska tillämpningen av nya materialegenskaper i soma design och ökad kunskap om brösten. Som ett resultat är sensorkudden gjord av silikon, som är avsedd att betona hudens brösttaktilitet och visuell interaktion.
Wang, Xueke. "Does visual access when lifting unstable objects affect the biomechanical loads experienced by the spine and shoulders". The Ohio State University, 2017. http://rave.ohiolink.edu/etdc/view?acc_num=osu1492722421190945.
Texto completoSilva, Marcos Camargo da. "Efeitos da fadiga muscular e da informação sensorial tátil no controle postural de ginastas acrobáticos". Universidade de São Paulo, 2017. http://www.teses.usp.br/teses/disponiveis/100/100139/tde-21092017-113923/.
Texto completoAlthough Acrobatic Gymnastics practice has been considered effective in generating neuromuscular adaptations associated with postural control improvements, to date no study has investigated the behavior of postural sway of gymnasts of Acrobatics Gymnastics in response to the manipulation of sensory information such as the addition of tactile sensory cues. Moreover, a large number of studies have shown increased postural oscillations in response to muscle fatigue. However, no investigation has addressed the effects of muscle fatigue on the postural control of gymnasts of Acrobatics Gymnastics. As postural control is improved by different types of physical training, particularly those requiring skilled and fast actions, the hypothesis saised in this study was that gymnasts of Acrobatics Gymnastics would be less prone to fatigue-induced postural instabilities, thereby showing a smaller effect of muscle fatigue on postural sway. Therefore, the aim of this study was to compare the effects of plantar flexor muscle fatigue on the control of single leg stance between gymnasts of Acrobatics Gymnastics (GYN group) and non-gymnasts (CTRL group), during postural tasks performed with and without additional tactile information due to contact of the index finger with an external surface. Additionally, surface EMG of the lower limb and trunk muscles was used to further evaluate the fatigue-induced adaptations on the neuromuscular system. The results indicated that, for both GYN and CTRL groups, muscle fatigue caused an increase in postural sway, while the touching an external surface decreased it. However, for the CTRL group (but not for the GYN group) the effect of fatigue seems to be dependent on the touch condition, as the effect of fatigue on postural sway was attenuated in the presence of additional tactile information. Although postural sway parameters were similar between the GYN and CTRL groups, analysis of the EMG signals indicated that the GYN group used lower levels of tibialis anterior muscle activation (or less frequent activations), as well as different spectral distributions of the EMG signals from gastocnemius medialis, biceps femoris and rectus abdominis during the unipodal postural task, regardless of the fatigue or touch condition
Lacape, Geneviève. "Contribution à l'étude d'un mécanisme d'information transcellulaire : le métabolisme d'acides gras hydroxyles par les cellules musculaires lisses vasculaires". Bordeaux 2, 1992. http://www.theses.fr/1992BOR2B001.
Texto completoTolley-Stokes, Rebecca. "Around and Around She Goes: Roller Derby in Appalachia". Digital Commons @ East Tennessee State University, 2011. https://dc.etsu.edu/etsu-works/5761.
Texto completoROSSI, FABIO. "A Bio-Inspired Processing Unit for Surface Electromyography Applications". Doctoral thesis, Politecnico di Torino, 2022. https://hdl.handle.net/11583/2972787.
Texto completoMUGNOSSO, MADDALENA. "Coupling Robot-aided assessment and surface electromyography to evaluate wrist and forearm muscles activity, muscle fatigue and its effect on proprioception". Doctoral thesis, Università degli studi di Genova, 2020. http://hdl.handle.net/11567/995904.
Texto completoDunca, Andreas y Hoang Anh Quoc Nguyen. "Wireless electromyogram system". Thesis, KTH, Skolan för elektroteknik och datavetenskap (EECS), 2020. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-281817.
Texto completoVenös tromboemboli (VTE) är en av de vanligaste kardiovaskulära sjukdomarna. KTH och dess akademiska och industriella partner avser att utveckla ett system med uppdrag att bekämpa VTE genom att stimulera inaktiva muskler. Elektromyografi (EMG) används för att mäta musklernas aktiveringspotential. Syftet med denna avhandling är att utveckla en EMG-enhet som kan mäta bioelektriska signaler och överföra denna data till andra enheter. Ett fungerande EMG system kräver en lämplig förstärkning för att resultatet ska vara läsbart och kräver filtrering samt utförlig kretskortdesign för att eliminera brus/störningar som kan påverka resultatet negativt.Projektet använde en Top-Down strategi. En arkitektur av EMG-systemet genomfördes och sedan delades upp i funktionella block. Varje block implementerades separat och hela lösningen testades experimentellt för att säkerställa att alla specifikationer uppfylldes. För att validera EMG- enheten användes referensbilder tillsammans med att direkt observera sambandet mellan muskelaktivering och dess signal via ett oscilloskop.Resultatet var en helt funktionell EMG-enhet som bestod av två PCB: en PCB med EMG funktionalitet (analog krets) och en PCB med digital processering för kommunikation (digital krets). EMG mätningarna var konsistenta mellan testpersoner och kunde lätt korreleras med muskelrörelse och spänningskraft. Referensbilderna indikerade att den fungerade som avsedd. Det fanns fortfarande 50 Hz common mode brus i EMG-enheten, vilket kan ha orsakas av dess breda bandbredd och dåliga lågfrekvensegenskaper.Målen och kraven uppfylldes: en fullt funktionell trådlös, modulär, liten och batteridriven EMG- enhet. Brusnivån för EMG kunde ha varit lägre och skulle behöva ytterligare förbättringar. Ett integrerat batteri kunde implementeras för att eliminera användarnas behov av att tillhandahålla ett batteri. En applikation kunde ha utvecklats för EMG-enheten, med ett användarvänligt användargränssnitt, för vårdpersonal.Examensarbetarna strävade efter att minimera användning av komponenter och strömförbrukning under arbetsprocessen. Alla komponenter var RoHS-certifierade och kasserade komponenter insamlades för korrekt avfallshantering. Energiförbrukning kunde ha minimerats ytterligare i det digitala kretskortet genom att implementera sleep mode och en watchdog timer. I detta examensarbete var det önskvärt att implemnetera de 17 globala hållbarhetsmålen uppsatta av FN (Förenta Nationerna). Sammanfattningsvis uppfylldes huvudsakligen “3 – Good Health and well-being”. Hållbarhetsmålen ”12 - Ansvarig konsumtion och produktion”, ”13 – Klimatåtgärder”, ”15 - Liv på land” anses även att ha beaktas i denna avhandling.
Djilas, Milan. "Interprétation des informations sensorielles des récepteurs du muscle squelettique pour le contrôle externe". Phd thesis, Université Montpellier II - Sciences et Techniques du Languedoc, 2008. http://tel.archives-ouvertes.fr/tel-00333530.
Texto completoPour que le modèle ci-dessus puisse être utilisé pour l'estimation de l'état du muscle, le taux de variation de la longueur du muscle pendant le mouvement doit avoir un effet négligeable sur les paramètres du modèle. Nous avons proposé dans cette thèse une approche pour la détection et la classification de pics dans l'enregisrement neural dans l'objectif d'isoler les activités neurales sensorielles des récepteurs musculaires ayant une sensibilité minimale à la vitesse de l'élongation musculaire. L'algorithme est basé sur la transformée en ondelettes continue multi-échelle utilisant des ondelettes complexes. Le système de détection utilise une simple détection par seuillage, couramment utilisée, particulièrement avec les enregistrements ayant un faible rapport signal sur bruit. Les résultats de classification des unités montrent que la classification développée est capable d'isoler l'activité ayant une relation linéaire avec la longueur du muscle. Ceci constitue une étape vers une estimation, en ligne basée modèle, de la longueur du muscle qui pourra être utilisée dans un système FES en boucle fermée utilisant des informations sensorielles naturelles.
Un des principaux problèmes limitant l'interprétation des données ENG est le faible niveau du signal neural par rapport à celui du bruit dans l'enregistrement. Nos hypothèses ont été que le blindage de l'implant aiderait à améliorer le rapport signal sur bruit. Des résultats expérimentaux, issus d'une étude préliminaire que nous avons réalisée, montrent que le placement d'électrodes standards à manchon placées autour du site d'implantation de la tfLIFE augmentait le niveau du signal ENG dans les enregistrements.
Lopes, Pedro [Verfasser], Patrick Akademischer Betreuer] Baudisch y Felix [Akademischer Betreuer] [Naumann. "Interactive Systems Based on Electrical Muscle Stimulation / Pedro Lopes ; Patrick Baudisch, Felix Naumann". Potsdam : Universität Potsdam, 2018. http://nbn-resolving.de/urn:nbn:de:kobv:517-opus4-421165.
Texto completoLopes, Pedro [Verfasser], Patrick [Akademischer Betreuer] Baudisch y Felix [Akademischer Betreuer] Naumann. "Interactive Systems Based on Electrical Muscle Stimulation / Pedro Lopes ; Patrick Baudisch, Felix Naumann". Potsdam : Universität Potsdam, 2018. http://d-nb.info/1217717897/34.
Texto completoContessa, Paola. "A muscle-force model with physiological bases". Doctoral thesis, Università degli studi di Padova, 2010. http://hdl.handle.net/11577/3426891.
Texto completoIl controllo della forza muscolare si basa principalmente su due fenomeni: il reclutamento di unità motorie e la regolazione della loro frequenza di scarica. Molti aspetti riguardanti i meccanismi coinvolti nel controllo delle unità motorie e nella generazione di forza muscolare restano ancora da investigare. Parte del lavoro di questa tesi ha riguardato lo studio del comportamento della frequenza di scarica delle unità motorie e dei parametri alla base dell’incremento delle fluttuazioni dell’output di forza durante l’esecuzione di contrazioni muscolari sostenute fino all’affaticamento. Inoltre, è stato analizzato il comportamento della frequenza di scarica delle unità motorie durante lo svolgimento di contrazioni muscolari a livelli di forza crescente fino alla massima forza di contrazione volontaria (a diverse velocità di incremento della forza); ed è stata messa a punto una equazione in grado di modellare il comportamento della frequenza di scarica in funzione dell’eccitazione ricevuta dal pool di unità motorie. I risultati di questa prima analisi sono serviti per creare un modello di produzione della forza muscolare basato su dati fisiologici verificabili. Il modello include il concetto di “common drive”, ovvero di un input oscillatorio comune ricevuto da tutte le unità motorie del pool; la dipendenza temporale dei “twitch” di forza delle unità motorie; ed un “feedback loop” per simulare la generazione di forza in contrazioni in “target-force tracking mode”. Si è dimostrato come il modello sviluppato sia in grado di simulare il pattern di forza e il comportamento delle unità motorie sperimentalmente osservati durante l’esecuzione di contrazioni prolungate e sostenute fino all’affaticamento. In particolare, si è potuto osservare come l’eccitazione ricevuta dal pool di unità motorie si modifichi in seguito ad un aumento o ad una diminuzione della capacità di produrre forza delle fibre muscolari e come la variazione dell’eccitazione comporti di conseguenza una diminuzione o un aumento della frequenza di scarica delle unità motorie e del numero di unità motorie attive. La simulazione di contrazioni muscolari prolungate ha anche evidenziato come la crescente variabilità della forza muscolare sia da attribuire al reclutamento di unità motorie caratterizzate da “twitch” di ampiezza maggiore e da un maggiore grado di cross-correlazione tra la frequenza di scarica delle unità motorie attive, mentre la variabilità della frequenza di scarica non sembra influire sull’output di forza.
Pfeiffer, Max Florian [Verfasser]. "Ubiquitous haptic feedback in human-computer interaction through electrical muscle stimulation / Max Florian Pfeiffer". Hannover : Technische Informationsbibliothek (TIB), 2016. http://d-nb.info/1126667951/34.
Texto completoPesare, Daniele. "Musitique: Informatica ed evoluzione del linguaggio musicale". Bachelor's thesis, Alma Mater Studiorum - Università di Bologna, 2013. http://amslaurea.unibo.it/6220/.
Texto completoBOTTER, ALBERTO. "Investigation of the neuromuscular system during involuntary muscle contractions - Methodological issues and clinical applications". Doctoral thesis, Politecnico di Torino, 2011. http://hdl.handle.net/11583/2504699.
Texto completoGuichaoua, Corentin. "Modèles de compression et critères de complexité pour la description et l'inférence de structure musicale". Thesis, Rennes 1, 2017. http://www.theses.fr/2017REN1S053/document.
Texto completoA very broad definition of music structure is to consider what distinguishes music from random noise as part of its structure. In this thesis, we take interest in the macroscopic aspects of music structure, especially the decomposition of musical pieces into autonomous segments (typically, sections) and their characterisation as the result of the grouping process of jointly compressible units. An important assumption of this work is to establish a link between the inference of music structure and information theory concepts such as complexity and entropy. We thus build upon the hypothesis that structural segments can be inferred through compression schemes. In a first part of this work, we study Straight-Line Grammars (SLGs), a family of formal grammars originally used for structure discovery in biological sequences (Gallé, 2011), and we explore their use for the modelisation of musical sequences. The SLG approach enables the compression of sequences, depending on their occurrence frequencies, resulting in a tree-based modelisation of their hierarchical organisation. We develop several adaptations of this method for the modelisation of approximate repetitions and we develop several regularity criteria aimed at improving the efficiency of the method. The second part of this thesis develops and explores a novel approach for the inference of music structure, based on the optimisation of a tensorial compression criterion. This approach aims to compress the musical information on several simultaneous time-scales by exploiting the similarity relations, the logical progressions and the analogy systems which are embedded in musical segments. The proposed method is first introduced from a formal point of view, then presented as a compression scheme rooted in a multi-scale extension of the System & Contrast model (Bimbot et al., 2012) to hypercubic tensorial patterns. Furthermore, we generalise the approach to other, irregular, tensorial patterns, in order to account for the great variety of structural organisations observed in musical segments. The methods presented in this thesis are tested on a structural segmentation task using symbolic data, chords sequences from pop music (RWC-Pop). The methods are evaluated and compared on several sets of chord sequences, and the results establish an experimental advantage for the approaches based on a complexity criterion for the analysis of structure in music information retrieval, with the best variants offering F-measure scores around 70%. To conclude this work, we recapitulate its main contributions and we discuss possible extensions of the studied paradigms, through their application to other musical dimensions, the inclusion of musicological knowledge, and their possible use on audio data
CASTAGNERI, CRISTINA. "Machine Learning approaches applied to the analysis of muscle activation patterns". Doctoral thesis, Politecnico di Torino, 2020. http://hdl.handle.net/11583/2839853.
Texto completoZHANG, YIFANG. "The Development and Control of a Novel Bio-Inspired Semi-Rigid Device (Exo-Muscle) for the Knee". Doctoral thesis, Università degli studi di Genova, 2023. https://hdl.handle.net/11567/1108033.
Texto completoDevanne, Hervé. "Coordinations entre muscles abaisseurs et elevateurs de la mandibule dans les mouvements simples : role des informations sensorielles". Paris 11, 1994. http://www.theses.fr/1994PA112395.
Texto completoCARNOVALINI, FILIPPO. "Creatività Computazionale Musicale Basata su Analisi Musicologiche e Statistiche". Doctoral thesis, Università degli studi di Padova, 2022. http://hdl.handle.net/11577/3454660.
Texto completoThe field of Computational Creativity tries to obtain creative behaviours from computers, to further the understanding of what regulates creativity and what is possible to obtain from computational systems. One common effort within this field is that to have computers write music, as this is an activity that is recognized to require creativity. In this thesis I review some of the main approaches to music generation as well as some questions that remain unanswered within the field. In the work described here, I focus on two of these, namely, the role of emotion and sociality in music, and long-term structure,trying to understand the role these two aspects can have in music generation. A serious game for social interaction is presented. This game allows two players to freely create a rhythm by interacting via MIDI drum pads. The software detects the tempo and meter they are playing, and adds a musical augmentation to their interaction, increasing the aesthetic value of their gaming and social experience. This is shown to be an effective way of creating a captivating experience for users. A system for the analysis of musical structure is also presented. This algorithm uses ad hoc representations of musical content, based on tree representations used by musicologists. Starting from the basic representations that were known in literature, this algorithm builds further abstracted representations that summarize the structural aspects of an entire piece and then of an entire corpus. Some example applications are shown, including an algorithm for music generation that leverages these representations and Information Theory concepts to create novel music that shows a structure similar to the ones found in the example corpus. While the method for generating the melodic material used for these novel pieces is not fully capable of generating realistic melodies, the algorithm manages to create satisfactory long-term structure, thanks to the implemented representations.
Li, Yuanbo. "Therapeutic Decision Making by Muscle Invasive Bladder Cancer Patients| The Role of Informational and Emotional Needs and Care Provider Support". Thesis, Icahn School of Medicine at Mount Sinai, 2019. http://pqdtopen.proquest.com/#viewpdf?dispub=13814283.
Texto completoObjective: To explore patient factors that influence patients’ decisions about Neoadjuvant chemotherapy (NC) including patient unmet needs, challenges in decision making, and the role of family and caregiver involvement in treatment decision making. Our goal is to elucidate patient factors including their beliefs, values, expectations, worries about NC and MIBC, emotional challenges, and the importance of caregivers’ involvement in decision making and selection of treatment procedures.
Design: A qualitative study with semi-structured single interviews and focus groups. Atlas.ti software was used to analyze the qualitative data collected.
Settings: Icahn School of Medicine at Mount Sinai (ISMMS) and Northwell Health (NH), New York, USA.
Methods and Materials: 20 MIBC survivors from the ISMMS (n = 10) and NH (n = 10) were enrolled in this study from September 2015 and August 2016. 17 of them finished a semi-structured single interview and 3 of them joined a focus group interview to share their decision-making process about their treatment plans. Three ISMMS health care providers were interviewed to understand physicians’ standpoints on the challenges, barriers, and potential facilitators for MIBC patients to make a decision about their treatment plans.
Results: Patients decisions on whether or not to go through NC were influenced by three major parts: physician’s opinion or suggestion, family and spouses’ opinion, and patients’ own value and preferences. Sufficient information about treatment efficacy (i.e. treatment options, survival rates, experience sharing from former patients) would benefit patients’ decision-making process. Therefore ensuring information available for patients is important Results also showed that having a second opinion, experience shared by other patients, and caregivers’ help with information search helped address some of the patients’ reported informational needs. Physicians’ recommendations and advice were reported as influential factors in patients’ treatment decision making. Physicians’ challenges confirmed by interviewed patients suggested several areas await improvement including more help with daily activities from healthcare professionals, good bedside manners and professional figures, and opportunity to communicate with former patients.
Conclusions: Meeting patients’ informational and emotional needs is imperative to facilitate their decision-making process. Caregivers play significant roles in treatment decision making and recovery. Preparing caregivers for treatment decision making and patient care can maximize support received from the patient’s social network.
Hoover, Mark A. "Analysis of water quality in Lake Erie using GIS methods". Ohio : Ohio University, 1997. http://www.ohiolink.edu/etd/view.cgi?ohiou1177438679.
Texto completoDe, Luca Alberto. "Moving beyond DTI: non-gaussian diffusion in the brain and skeletal muscle". Doctoral thesis, Università degli studi di Padova, 2017. http://hdl.handle.net/11577/3424776.
Texto completoL’Imaging mediante Risonanza Magnetica pesata in diffusione (diffusion-weighted Magnetic Resonance Imaging, dMRI) è una tecnica diagnostica in grado di fornire metriche correlate alla microstruttura dei tessuti. L’imaging pesato in diffusione (Diffusion Weigted Imaging, DWI) e tecniche derivate, quali il coefficiente di diffusione apparente (Apparent Diffusion Coefficient, ADC), in virtù della loro sensibilità ai cambiamenti microstrutturali nei tessuti, possono essere considerate lo stato dell’arte nella diagnosi di ictus ed ischemia cerebrale dai primi anni 90. Nel 1994 Basser e colleghi hanno introdotto l’imaging basato sul tensor di diffusione (Diffusion Tensor Imaging, DTI), la prima tecnica di quantificazione in grado di descrivere l’anisotropia del processo diffusivo nei tessuti biologici. Nel capitolo II sono illustrati i risultati di uno studio effettuato sulla sostanza bianca di pazienti affetti da Atassia di Friedreich con il modello DTI. Dopo oltre 20 anni dalla sua presentazione il modello DTI è ancora ampiamente utilizzato, tuttavia molteplici limitazioni sono state dimostrate spingendo verso un suo superamento, con particolare riferimento alla bassa specificità del modello e alla coesistenza di molteplici tessuti caratterizzati da architetture differenti. Inoltre, il modello tensoriale può essere applicato solo a dati acquisiti in uno specifico intervallo di pesature in diffusione, al di fuori del quale l’effetto delle membrane biologiche è non trascurabile originando fenomeni detti di diffusione non-gaussiana, che violano gli assunti del modello. Su questi argomenti vertono i capitoli III e IV, proponendo due differenti approcci per superare le limitazioni del DTI. Un’altra tecnica molto diffusa per analizzare il segnale dMRI è la deconvoluzione sferica (Spherical Deconvolution, SD), presentata nel capitolo IV in una formulazione tessuto-specifica ed applicata a soggetti di controllo e un paziente affetto da sclerosi multipla per derivare metriche specifiche a sostanza bianca, grigia e fluido cerebro-spinale. Storicamente, la dMRI è stata applicata non solo all’encefalo ma a diversi distretti periferici, incluso il muscolo scheletrico. Nel 1986 Le Bihan e colleghi osservarono come il segnale proveniente dall’acqua fluente nei vasi periferici e nella rete micro vascolare contribuissero al segnale dMRI acquisito con piccolo pesatura in diffusione, proponendo il modello “Intra- Voxel Incoherent Motion” (IVIM) per spiegarlo. IVIM può essere visto come un modello per ottenere misure di pseudo-diffusione o come una tecnica per ottenere misure di ADC ripulite dall’effetto della perfusione, categorizzandola come un artefatto. Nonostante la dMRI e il DTI siano stati applicati al muscolo scheletrico sin dalle origini, solo in tempi recenti evoluzioni quali il Diffusion Kurtosis Imaging sono state sperimentate con successo su dati muscolari acquisiti a forte pesatura in diffusione. I concetti di IVIM e DKI sono sviluppati nel capitolo V, dove gli effetti del primo su DTI e DKI, nonchè la relazione tra DTI e DKI sono analizzate mediante simulazioni e dati MRI della gamba inferiore. In linea con l’attuale letteratura dMRI, i primi 5 capitoli di questa tesi mostrano il segnale in diffusione come misura eterogenea. Il capitolo VI propone l’analisi di un metodo di deconvoluzione multi-compartimentale e pseudo-continuo, tecnica che non richiede di modellizzare esplicitamente il segnale dMRI. Infine, il capitolo VII presenta un sommario di altri argomenti di ricerca sviluppati nel corso degli studi di dottorato.
Kruk, Dominika. "Multimodal Imaging of the heart muscle - Analysis and visualization to aided diagnosis". Thesis, Bourgogne Franche-Comté, 2019. http://www.theses.fr/2019UBFCK070.
Texto completoThe heart plays a vital role in the functioning of the human body. The function of the human heart is pumping blood throughout the body, supplying oxygen and nutrients to the tissues and removing carbon dioxide and other wastes. Cardiovascular diseases are the first cause of death worldwide. Heart diseases are mainly related to a process called atherosclerosis. This process caused harder blood flow through arteries and finally it can stop the blood flow. It can lead to heart attack and stroke. Early and accurate diagnosis of cardiovascular diseases plays an important role in improving the life of population afflicted heart diseases. Medical imaging is widely used in the diagnosis and monitoring of cardiovascular diseases. Medical imaging is a process of collecting information about a place of interest in the body using a predefined characteristic property that is displayed in the form of an image. Imaging techniques allow clinicians and scientist to see inside the body and provide a wealth of information.Recent advances in medical imaging with meaningful contributions from many fields of science, such us medical physic, chemistry, electrical and computer engineering, and computer science have a large impact on diagnostic radiology. The development of engineering and computer science has given the possibility to obtain high-resolution multidimensional images of the place of interest in the body. This kind of images gives a complex information to analyze the structure and function of the organs for computer-aided diagnosis, more accurate diagnosis or to develop or to direct new therapeutic strategies. The aim of this thesis is to develop a new method, which will allow to obtain more complex and accurate information about myocardial disease by using a computer science's and image processing methods.The main objective of this thesis is to develop a complete method allowing Positron Emission Tomography (PET) and Magnetic Resonance Images (MRI) registration of cardiac images. The main difficulties of the PET-MRI registration are the differences between these two modalities. To decrease these differences, the segmentation method were applied to PET and MRI images. Segmentation of the images can help to extract myocardium from the background and focus just on the registration of the myocardium without the impact of the structure around
Paradzinets, Aliaksandr V. "Variable resolution transform-based music feature extraction and their applications for music information retrieval". Ecully, Ecole centrale de Lyon, 2007. http://www.theses.fr/2007ECDL0047.
Texto completoAs a major product for entertainment, there is a huge amount of digital musical content produced, broadcasted, distributed and exchanged. There is a rising demand for content-based music search services. Similarity-based music navigation is becoming crucial for enabling easy access to the evergrowing amount of digital music available to professionals and amateurs alike. This work presents new musical content descriptors and similarity measures which allow automatic musical content organizing (search by similarity, automatic playlist generating) and labeling (automatic genre classification). The work considers the problem of content descriptor building from the musical point of view in complement of low-level spectral similarity measures. Several aspects of music analysis are considered such as music signal analysis where a novel variable resolution transform is presented and described. Higher level processing touches upon the musical knowledge extraction. The thesis presents algorithms of beat detection and multiple fundamental frequency estimation which are based on the variable resolution transform. The information issued from these algorithms is then used for building musical descriptors, represented in form of histograms (novel 2D beat histogram which enables a direct tempo estimation, note succession and note profile histograms etc. ). Two major music information retrieval applications, namely music genre classification and music retrieval by similarity, which use aforementioned musical features are described and evaluated in this thesis
Yvart, Willy. "Qualification (a)verbale de l'humeur musicale : nouvelles perspectives pour la synchronisation dans l'audiovisuel". Thesis, Valenciennes, Université Polytechnique Hauts-de-France, 2019. http://www.theses.fr/2019UPHF0016.
Texto completoThe music is part of all films produced within the audiovisual and cinematographic industries. It can preexist the film, be destined to be part of the traditional music industry or to be especially synchronized with pictures. In this case, the music excerpt sought after is usually lost in endless media bases providing their own Information Retrieval Systems (IRS). Whereas in the Anglo-Saxon world Music Supervisors (MS) are genuine experts in the use of these systems, it is not the same across Continental Europe. Per accidens MS are asked to translate the desired musical mood into queries for these IRSs, systems that they are sometimes using for the first time. In order to make this task easier for these non-specialists, we explored two approaches. The first led us to explore the possibilities offered by semantic proxemics in order to clean tag clouds mixing taxonomies and folksonomies to trace new relationships between media or to reject qualitatively aberrant qualifications. The second consisted in finding a way to do so without verbalisation. After a review of extant solutions developed for the needs of many other disciplines (experimental psychology, sciences of education, marketing, etc.), we managed to prototype SYM (Spot Your Mood). Instead of relying on verbalisations, SYM makes it possible to provide relatively intuitive spatial coordinates out of a valence-arousal space. Also, SYM has been put to use for many other adaptations in order to qualify user or spectator experience as well as to help elicit the mood with audiences suffering from various verbal or communicational impairments
Celada, Pierfrancesco. "Perception of musculo-skeletal size information from motion for visual effects applications in two and three-dimensions". Thesis, University of Newcastle Upon Tyne, 2010. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.519577.
Texto completoAFSHARIPOUR, BABAK. "Estimation of load sharing among muscles acting on the same joint and Applications of surface electromyography". Doctoral thesis, Politecnico di Torino, 2014. http://hdl.handle.net/11583/2535698.
Texto completoAnjos, Fabio Vieira Dos. "High-density surface EMG to investigate muscle activity during standing: implications for the training of postural control with EMG biofeedback in the elderly". Doctoral thesis, Politecnico di Torino, 2017. http://hdl.handle.net/11583/2690493.
Texto completoLasagni, Nicola. "Reti neuronali artificiali e composizione musicale". Bachelor's thesis, Alma Mater Studiorum - Università di Bologna, 2015. http://amslaurea.unibo.it/9615/.
Texto completoThyrion, Chloé. "Imagerie motrice chez l'homme : contribution des informations proprioceptives et de l'intention motrice à la perception kinesthésique". Thesis, Aix-Marseille 1, 2011. http://www.theses.fr/2011AIX10225.
Texto completoThis thesis deals with the neural mechanisms involved in body movement perception. We contributed to developing a "propriomimetic" method based on neurosensory data and drawn from the population vector model for predicting the afferent proprioceptive patterns evoked during complex movements.The main contribution of this work is that it extends the scope of the method to include the whole set of possible human actions by showing that it can be used to accurately predict the proprioceptive patterns and to generate the kinaesthetic experiences associated with movements involving one or more joints, performed in 2- or 3-dimensional space, regardless of which muscles are involved.Other motor images were intentionally generated by the subjects in subsequent experiments and combined with those imposed by the vibratory stimulation. The results obtained here show that the images of both kinds were completely integrated when evoked simultaneously and that they gave rise to a unique and original perceptual experience, in which their spatio-temporal characteristics were combined. From the theoretical point of view, these findings confirm that proprioceptive afferents play an important role, along with the motor intention itself, in the elaboration of kinaesthetic perception. From the clinical point of view, the possibility of evoking motor images quite "naturally" using the method presented here to activate the peripheral receptors and/or the command centers, and thus the whole sensorimotor loop in the absence of any real movements, opens some promising perspectives for rehabilitation purposes
Mollica, Francesco. "Share Art: Reti neurali convoluzionali in ambito museale". Bachelor's thesis, Alma Mater Studiorum - Università di Bologna, 2021.
Buscar texto completoDang, Thi-Hai-Ha. "D'émotion et de GRACE : vers un modèle computationnel unifié des émotions : application à l'écoute musicale d'un robot danseur". Thesis, Evry-Val d'Essonne, 2012. http://www.theses.fr/2011EVRY0023/document.
Texto completoEmotion, as psychologists argue (like A. Damasio, K. R. Scherer, P. Ekman), is an essential factor for human beings in making decision, learning, inventing things, and interacting with others. Based on this statement, researchers in Human-Machine Interaction have been interested in adding emotional abilities to their applications. With the same goal of studying emotional abilities, we propose, in our work, a model of emotions named GRACE, which helps in modelling emotions in computational applications. We based our model on the work of psychologist Klaus R. Scherer, who intensively searches to form a generic model of emotion applicable to computational domain (like informatics, robotics, etc.). We demonstrate the pertinence of our model by comparing it to other existing models of emotions in the field of informatics and robotics. In this thesis, we also worked on the instantiation of GRACE, in particular the components Cognitive Interpretation and Expression. These two components have been developed to be applied in the context of interacting with users using music. To develop Cognitive Interpretation, we worked on the extraction of emotional content in musical excerpts. Our contribution consists in proposing a reduced number of musical features to efficiently extract the emotional content in music, and in validating them via a learning system with a large database designed by a musicologist. For Expression, we have worked on the design of emotional moves of a mobile robot. Through very limited moves (moves in space, camera moves), we have shown that with dance-inspired motions, the robot could efficiently convey basic emotions (i.e. happiness, sadness, anger, serenity) to people
Ianni, Andrea. "Applicazioni di realtà aumentata in ambito museale". Master's thesis, Alma Mater Studiorum - Università di Bologna, 2015. http://amslaurea.unibo.it/9679/.
Texto completoRIMINI, DANIELE. "Nonlinear and factorization methods for the non-invasive investigation of the central nervous system". Doctoral thesis, Politecnico di Torino, 2018. http://hdl.handle.net/11583/2710971.
Texto completoHögberg, Jan-Olov. "Can GIS be used to identify streams with successful recruitment of freshwater pearlmussels (Margaritifera margaritifera)?" Thesis, Karlstad University, Faculty of Social and Life Sciences, 2009. http://urn.kb.se/resolve?urn=urn:nbn:se:kau:diva-4696.
Texto completoThe freshwater pearl mussel (Margaritifera margaritifera) has declined dramatically throughout its range and is faced with recruitment problems in most of the streams where populations still persist. Human activities, such as forestry and agriculture, are thought to be the main reason for these problems. In this study, spatial information on landscape features along 38 streams with known recruitment status were analyzed in an effort to determine if GIS-tools could be used to identify streams with successful recruitment. Differences in the distribution of various landscape features, measured in stream corridors of 50 and 150 m, and differences in several water chemical factors between streams with and without recruitment were investigated. The distribution of landscape features was also compared with host fish (brown trout) density and any statistically significant water chemical factor. Both mussel recruitment and trout density were found to be negatively related to clear-cuts, and mussel recruitment was also negatively related to high water color, which has been shown to be correlated with high nutrient content, one of several adverse effects of clear-cutting close to streams. Recruitment was expected to be negatively affected by roads, but no such relationship could be found. Instead, mussel recruitment was found to be positively related to the number of road crossings per kilometer, but the strength of this relationship was questionable. In addition, even though it was somewhat unclear, high proportions of lakes and ponds were found to be positive for both recruitment and high trout density. The results of the study indicate that GIS-tools can be used to find landscape features that affect recruitment of freshwater pearl mussel and they support the belief that forestry activities are an important cause for the decline of the species in Sweden. In addition, the results indicate that leaving protective zones of forest between streams and clear-cuts can be a possible conservation method for the freshwater pearl mussel.
Flodpärlmusslan (Margaritifera margaritifera) har minskat kraftigt i hela sitt utbredningsområde och i de flesta vattendrag där populationer finns kvar sker ingen rekrytering. Mänskliga aktiviteter, exempelvis skogsbruk och jordbruk, anses vara huvudorsaken för dessa problem. Syftet med den här studien var att undersöka om GIS-verktyg kan användas för att identifiera vattendrag med fungerande rekrytering. För att uppnå det analyserades geografisk information om landskapet längs 38 vattendrag med känd rekryteringsstatus. Skillnader i fördelningen av olika landskapsföreteelser, uppmätt i 50 och 150 meters buffertzoner, och skillnader i flera vattenkemiska faktorer mellan vattendrag med eller utan rekrytering undersöktes. Dessutom undersöktes även om det fanns något förhållande mellan landskapsföreteelser och tätheten av värdfisk (öring) och mellan landskapsföreteelser och signifikanta vattenkemiska faktorer. Både rekrytering av flodpärlmusslor och öringstäthet var negativt relaterad till kalhyggen. Rekrytering var också negativt relaterad till hög vattenfärg, som har visats vara korrelerat med högt näringsinnehåll, en av flera effekter kalhyggen nära vattendrag har. Rekrytering förväntades påverkas negativt av vägar, men inget negativt förhållande hittades. Istället hittades ett positivt förhållande mellan rekrytering och antalet vägkorsningar per kilometer, men styrkan av det förhållandet var ifrågasättbar. Dessutom var, om än något otydligt, andelen sjö och damm positivt för både rekrytering och hög öringtäthet. Studien indikerar att GIS-verktyg kan användas för att hitta landskapsföreteelser som påverkar rekryteringen av flodpärlmusslor och den stödjer bedömningen att skogsbruk är en av de viktigaste anledningarna till artens nedgång i Sverige. Dessutom indikerar resultaten att skyddszoner mellan kalhyggen och vattendrag kan vara en möjlig skyddsåtgärd för flodpärlmusslan.
Prescott, Trevor Jake-David. "Assessment of Freshwater Mussel Communities of Small Stream Mouths Along Lake Erie". Cleveland State University / OhioLINK, 2014. http://rave.ohiolink.edu/etdc/view?acc_num=csu1395489064.
Texto completoChiappetta, Marco. "Composizione musicale e streaming peer-to-peer con web audio e webrtc". Bachelor's thesis, Alma Mater Studiorum - Università di Bologna, 2013. http://amslaurea.unibo.it/6200/.
Texto completoVillemin, Danièle. "Réécouter, réécrire. Évolutions du discours descriptif en classe de troisième. Didactique du lexique en éducation musicale". Thesis, Paris 4, 2011. http://www.theses.fr/2011PA040112.
Texto completoWriting a commentary after a listening exercise mobilizes several skills linked to perception and drafting. This thesis, aiming at an interdisciplinary approach, attempts to describe the influence of autonomous revision and of the piece of music heard on commentaries written by pupils in the fourth form. Its theoretical foundations are found in audition psychology and linguistics. The primary role attributed to language skills gives way to a systematic and holistic description of the compiled vocabulary. For this thesis, original content analysis tools have been designed, based on the corpus. Its contribution is thus essentially methodological. The selected indicators enable us to assess the disparities in informative density according to the piece heard and the drafting register of the commentary. Based on a synthesis of the results obtained, it is thus possible to establish a typology of written commentaries and bring to light some stylistic and formal aspects of the selected pieces of music through a reasoned analysis of lexical intensification areas
Cattabriga, Samuele. "Aumentare la realta' aumentata: il caso del First-Person Shooter Game sul Conte Luigi Ferdinando Marsili". Master's thesis, Alma Mater Studiorum - Università di Bologna, 2012. http://amslaurea.unibo.it/3152/.
Texto completoCovarrubias, Acosta Sabina. "Pour une écriture multimédia dans la composition musicale". Thesis, Paris 8, 2016. http://www.theses.fr/2016PA080116/document.
Texto completoThe main goal of this work is to solve some of the difficulties that composers encounter when notating music. Firstly, we describe how the Western musical notation (WMN) is limited when attempting to write specific musical elements. Secondly, we show the possible advantages that multimedia writing (MW) could offer on the notation of such elements. To address these issues, we used MW in six “experiments/composition projects” that were conceived to answer specific notation questions. The results obtained thereof allowed us to demonstrate the efficacy of MW for overcoming current limitations in music notation. More specifically, MW constitutes a group of procedures that allows to simultaneously represent information in different ways. This information could be either text, sounds, still or moving images, among others. Such procedures can be used to note down a message to further save it and transfer it from the composer to the performer. In the context of our experimental paradigms, MW has proven to be efficient for: the notation of timber, the integration of musicians from oral tradition in mixed music works, the incorporation of instrumental techniques drawn from oral tradition music into written music, the integration of a tonal language in a music score, the notation of new instrumental and vocal techniques, the guidance at using new software, and the incorporation of expressiveness associated to music styles of oral tradition into written works. We consider that two types of notation that proved to be efficient in this research could be added to the body of already existing MW, namely auditive notation and the notation of a know-how by the means of video
Foscarin, Francesco. "The musical score : a challenging goal for automatic music transcription". Electronic Thesis or Diss., Paris, CNAM, 2020. http://www.theses.fr/2020CNAM1285.
Texto completoA musical score is a complex semiotic object that excels at conveying musical information in a human readable format. Nowadays, a lot of music is available exclusively as recorded performances, so systems which can automatically transform those performances into musical scores would be extremely beneficial for performers and musicologists. This task, called automatic music transcription (AMT), comprises a large number of subtasks which generically transform the performance input into higher level representations, such as unquantized and quantized MIDI files. We believe that a clear model of the information contained in a musical score would help the development and the evaluation of AMT systems. In particular we advocate for a clear separation between the music which the score encodes and the set of notation symbols which is employed to represent it
LAFLEUR, JOCELYN. "Traitement des informations proprioceptives musculaires dans la moelle epiniere du chat : effets de la contraction d'un muscle extenseur de la cheville sur les motoneurones et sur les cellules d'origine du faisceau spino-cerebelleux dorsal". Paris 6, 1992. http://www.theses.fr/1992PA066530.
Texto completoLouboutin, Corentin. "Modélisation multi-échelle et multi-dimensionnelle de la structure musicale par graphes polytopiques". Thesis, Rennes 1, 2019. http://www.theses.fr/2019REN1S012/document.
Texto completoIn this thesis, we approach these questions by defining and implementing a multi-scale model for music segment structure description, called Polytopic Graph of Latent Relations (PGLR). In our work, a segment is the macroscopic constituent of the global piece. In pop songs, which is the main focus here, segments usually correspond to a chorus or a verse, lasting approximately 15 seconds and exhibiting a clear beginning and end. Under the PGLR scheme, relationships between musical elements within a musical segment are assumed to be developing predominantly between homologous elements within the metrical grid at different scales simultaneously. This approach generalises to the multi-scale case the System&Contrast framework which aims at describing, as a 2×2 square matrix, the logical system of expectation within a segment and the surprise resulting from that expectation. For regular segments of 2^n events, the PGLR lives on a n-dimensional cube (square, cube, tesseract, etc...), n being the number of scales considered simultaneously in the multi-scale model. Each vertex in the polytope corresponds to a low-scale musical element, each edge represents a relationship between two vertices and each face forms an elementary system of relationships. The estimation of the PGLR structure of a musical segment can then be obtained computationally as the joint estimation of : the description of the polytope (as a more or less regular n-polytope) ; the nesting configuration of the graph over the polytope, reflecting the flow of dependencies and interactions as elementary implication systems within the musical segment, the set of relations between the nodes of the graph. The aim of the PGLR model is to both describe the time dependencies between the elements of a segment and model the logical expectation and surprise that can be built on the observation and perception of the similarities and differences between elements with strong relationships. The approach is presented conceptually and algorithmically, together with an extensive evaluation of the ability of different models to predict unseen data, measured using the cross-perplexity value. These experiments have been conducted both on chords sequences, rhythmic and melodic segments extracted from the RWC POP corpus. Our results illustrate the efficiency of the proposed model in capturing structural information within such data