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Zhou, Lin. "Lorentz microscopy of MFM tips and related structures." Thesis, University of Glasgow, 1996. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.320296.
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Nickerson, James T. "Application of Multi-Frequency Modulation (MFM) to facsimile machines." Thesis, Monterey, California : Naval Postgraduate School, 1990. http://handle.dtic.mil/100.2/ADA241041.
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Thesis (M.S. in Electrical Engineering)--Naval Postgraduate School, September 1990.Thesis Advisor(s): Moose, P. H. Second Reader: Christi, R. "September 1990." Description based on title screen as viewed on March 22, 2010. DTIC Identifier(s): Amplitude Modulation. Author(s) subject terms: Facsimile, MFM, Communications. Includes bibliographical references (p. 43-44). Also available in print.
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Scott, Jamie. "Characterisation of MFM tip stray fields using Lorentz electron tomography." Thesis, University of Glasgow, 2002. http://theses.gla.ac.uk/3561/.
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The work presented in this thesis is a study of the magnetic properties of various magnetic force microscopy (MFM) tips using Lorentz electron microscopy and tomography. The implementation of tomography and differential phase contrast (DPC) microscopy allows the stray field distribution in the half space in front of MFM tips to be measured with a spatial resolution of <30 nm and a field resolution of <2 mT. This information will allow the development of better models for MFM imaging performance and, potentially, the quantification of MFM images.
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Huo, Suguo. "Micromagnetic simulation and MFM study of micromagnetic structures in ferromagnetic materials." Thesis, University of Sheffield, 1998. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.287631.
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Khandekar, Sameer Sudhakar. "Design and construction of a magnetic force microscope." Thesis, Texas A&M University, 2003. http://hdl.handle.net/1969.1/2435.
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A magnetic force microscope (MFM) is a special type of scanning force microscope which measures the stray field above a ferromagnetic sample with the help of a ferromagnetic cantilever. The aim of this project was to design and build a MFM head and interface it with a commercial scanning probe electronics controller with the help of an appropriate force sensor. The MFM head and the force sensor were to be designed to work at low temperatures (down to 4 K) and in high vacuum. During this work, a magnetic force microscope (MFM) head was designed. Its design is symmetrical and modular. Two dimensional views were prepared to ensure proper geometry and alignment for the various modules. Based on these views, individual parts in the various modules were manufactured and combined for the final assembly of the head. This MFM head has many essential and advanced features which were incorporated during the design process. Our MFM head has an outside diameter of 5 cm and thus has a low thermal mass. The head operates inside a 100 cm long vacuum can which is kept in a cold bath inside a superinsulated dewar. Other features of this MFM head include thermal compensation of the important parts, flexibility to use commercial MFM cantilevers and a large scan range compared to the previous designs. Some of the anticipated system specifications are: 1) room temperature scanning range of 175?? 175 ??m, 2) low temperature scanning range between 35-50 ??m, 3) smallest detectable magnetic force in the range of one pN and 4) smallest detectable magnetic force gradient in the range of 10-3 to 10 -5 N/m. This MFM head was interfaced to a commercial scanning probe electronics apparatus by designing a fiber-optic interferometer as the sensor for the detection of the cantilever deflection. The fiber-optic sensor also has features of its own such as stability, compactness and low susceptibility to noise because of all-fiber construction. With this MFM head, we hope to image many magnetic samples which were previously impossible to image at Texas A&M.
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Iwabe, Cristina. "Escala medida da função motora (MFM) : novo instrumento de avaliação em doenças neuromusculares." [s.n.], 2009. http://repositorio.unicamp.br/jspui/handle/REPOSIP/313861.
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Orientadores: Anamarli Nucci, Luis Alberto MagnaTese (doutorado) - Universidade Estadual de Campinas, Faculdade de Ciencias Medicas
Made available in DSpace on 2018-08-14T03:53:48Z (GMT). No. of bitstreams: 1 Iwabe_Cristina_D.pdf: 1754354 bytes, checksum: 4d6a8aa043ff9b54a822122861754044 (MD5) Previous issue date: 2009
Resumo: Os objetivos do estudo foram: traduzir a escala francesa Medida da Função Motora (MFM) para o português; identificar a confiabilidade de sua aplicação intra e interexaminador; validar a versão em português da MFM (MFM-P) em pacientes brasileiros com doenças neuromusculares; estudar a aplicabilidade da MFM-P na desproporção congênita de tipos de fibras (DCTF), em associação com ressonância magnética de músculo, e na distrofia miotônica (DM-1), correlacionando o grau de força. Métodos: tradução e retrotradução da escala foram realizadas, resultando em texto consensual. Na análise da confiabilidade, a aplicação da MFM-P foi documentada em vídeo em 58 pacientes de 6 a 60 anos, e diversos diagnósticos de doenças neuromusculares. O autor realizou o teste e re-teste e outros três fisioterapeutas analisaram os vídeos para avaliação estatística interexaminador dos resultados, através dos coeficientes de Kendall, kappa e Pearson. Para a validação da escala, 65 pacientes foram examinados pela escala MFM-P, Índice de Barthel (IB) e escala de Vignos. Na análise estatística utilizou-se o coeficiente de correlação de Spearman, com valor de p < 0,05. Para a aplicabilidade da MFM-P na DCTF, examinou-se pai e dois filhos da mesma família, submetidos a ressonância magnética de músculo. Na DM-1, verificou-se a correlação entre a MFM-P e a força muscular, através do coeficiente de correlação de Pearson. Resultados: os coeficientes de concordância de Kendall para a análise interexaminador e os coeficientes kappa e de Pearson para o teste e re-teste foram estatisticamente significativos (p-valor < 0.0001) nos 32 itens da escala e no escore total. Na validação da MFM-P observou-se alta correlação significativa com IB (r= 0,980; p <0,001) e com a escala de Vignos (r= -0,894; p<0,001). Os pacientes com DCTF apresentaram limitações nas atividades da dimensão 1 (em pé e transferências) da MFM-P, devido à fraqueza muscular mais acentuada em membros inferiores em concordância com os dados da ressonância magnética de músculo. No estudo dos pacientes com DM-1, obser-vou-se fraqueza simétrica dos membros inferiores, superiores e região axial, sendo que o segmento distal foi o mais deficitário. A correlação da força com as funções motoras na DM-1 demonstrou que a fraqueza muscular (grau igual ou inferior a 4) ocasiona prejuízo na execução das atividades funcionais, tornando o individuo dependente para suas atividades de vida diária. Concluiu-se pelo estudo da validade e confiabilidade, que a MFM-P mostrou-se eficaz como instrumento de avaliação em doenças neuromusculares
Abstract: The objective of this study were: to translate the French version of Motor Function Measure (MFM) into the Portuguese language; to describe the inter and intraexaminer reliability of the Portuguese MFM version (P-MFM); to validate the PMFM in Brazilian patients with neuromuscular disease; to analyzed the applicability of the P-MFM in congenital fibre type disproportion (CFTD), associated with muscle magnetic resonance image, and in Myotonic Dystrophy type 1 (MD-1), correlating with the strength. Methods: for the accomplishment of the Portuguese MFM version scale, two MFM translations were produced separately by proficient neurologists in French, resulting in a consensual text after evaluation by authors. For assessment of reliability of P-MFM, 58 patients, aged to 6 from 60 years, and several diagnostics neuromuscular disease were documented on video tape. The test-retest examiner (intrarater) and three other physiotherapists (interrater) analyzed the video tape, and the results were calculated by Kendall, kappa and Pearson coefficients. For validation of the scale, 65 patients were analyzed by the P-MFM, Barthel Index (BI) and Vignos scale. Statistical analyzes were conducted using Spearman correlation coefficients, p-value < 0,05. For the applicability of the P-MFM in CFTD it was evaluated from the same family, father and two sons, associated to the analysis of the muscle magnetic resonance. In the MD-1, it was analyzed the correlation between the P-MFM and muscle strength, using the Pearson correlation coefficient for statistical analysis. Results: the Kendall coefficients for the inter-examiner analysis and kappa and Pearson coefficients for the test-retest were statistically significant (p-value < 0,001) for the 32 items on the scale and total score. The P-MFM validation observed highly significant correlation with BI (r = 0,980; p < 0,001) and with the Vignos scale (r= - 0,894; p < 0,001). The patients with CFTD showed limitations in the activities of dimension 1 (standing and transfers) of the P-MFM, due more weakness in lower limbs, confirmed with those data in muscle magnetic resonance. In patients with MD-1, observed symmetrical weakness in the lower, upper limbs and axial region, with the most deficient in the distal segment. The correlation between strength and motor function in the MD-1 showed the strength reduction (score equal or less than 4) cause damage in the functional activities performance, reducing the independence for activities of daily living. In conclusion, with the reliability and validity of the PMFM, this scale can be used as useful tool in neuromuscular disease. The scale allowed monitoring the progress of the clinical in patients with CFTD. In patients with MD-1, observed the correlation between strength and motor function, mainly in distal segment
Doutorado
Ciencias Biomedicas
Doutor em Ciências Médicas
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Silva, Elaine Cristina da. "Análise da função motora de pacientes com distrofia muscular de Duchenne em corticoterapia através da escala MFM." Universidade de São Paulo, 2010. http://www.teses.usp.br/teses/disponiveis/5/5138/tde-11112010-093054/.
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A procura de novas escalas de simples utilização para mensurar a função motora é um objetivo comum aos centros de atendimento de doenças neuromusculares. A nova escala de avaliação MFM (Bèrard et al., 2005), validada no Brasil por Iwabe et al. (2008), foi aplicada em 33 pacientes com DMD, com idades entre seis e dezesseis anos, cadeirantes e deambulantes, que estavam em seguimento no ambulatório de doenças neuromusculares do HCFMUSP, recebendo corticoterapia. Os objetivos foram: verificar a aplicabilidade da escala e analisar a evolução da função motora dos pacientes com DMD em corticoterapia. Os pacientes foram avaliados em cinco visitas ao longo de um período de aproximadamente 18 meses (V0, V1, V2, V3, V4 e V5). A V0 correspondeu à avaliação inicial antes do início da corticoterapia, ocorrendo um intervalo de tempo de aproximadamente três meses até a V2. Entre V3, V4 e V5, o intervalo de tempo foi de quatro meses. A MFM avalia três dimensões: D1, relativa à posição ereta e transferências, com 13 itens; D2, relativa à motricidade proximal e axial, com 12 itens; D3 que refere-se à motricidade distal, com sete itens, e o escore total que engloba todas as três dimensões. A fim de analisar funções motoras especificas de acordo com a fase de evolução da doença, foram constituídos três grupos de pacientes: deambulantes, cadeirantes e pacientes que perderam a marcha ao longo do seguimento. Os resultados demonstraram que nos pacientes deambulantes ocorreu manutenção do quadro motor até 10 a 14 meses após início do tratamento na D1 e escore MFM total. Notou-se melhora da função motora de D2 nos primeiros seis meses, com conseqüente piora após 14 meses, e ganhos funcionais para D3 em todo o seguimento. Nos pacientes que perderam a marcha e cadeirantes ocorreram perdas funcionais nas últimas visitas, exceto para a motricidade distal (D3) que se manteve estável ao longo de todo o seguimento de 18 meses. Concluímos que a escala MFM demonstra-se eficaz para monitorar a evolução da doença, valorizando períodos de melhora, assim como de estabilidade funcional frente a tratamentos específicos, detectando alterações a curto prazo, e assim facilitando a adoção de intervenções adequadas ao momento da reavaliação do paciente. A D1 da escala MFM demonstra-se adequada no acompanhamento dos pacientes que mantêm a marcha, sendo útil para prever perdas futuras da função motora do paciente com DMDThe research for new simple evaluation scales has been a common aim among neuromuscular disease rehabilitation centers. We used the new MFM scale (Bèrard et al., 2005), which was validated in Brazil by Iwabe et al. (2008) to evaluate 33 patients with DMD aged 6-16 years, both ambulant and non-ambulant. All of them were receiving corticosteroid treatment in neuromuscular disorder center at HCFMUSP. Objectives: to verify the MFM scale applicability and to analyze the motor function evolution in DMD patients treated by corticosteroids. The patients were evaluated through five visits spread out over a period of about 18 months (V0, V1, V2, V3, V4 e V5). The V0 was related to evaluation before the beginning of corticosteroids treatment at intervals of about 3 months until V2. The interval time among V3, V4 and V5 was about 4 months. The MFM scale evaluates 3 dimensions: D1, relates to standing and transfers by 13 items; D2, related to axial and proximal motor capacity by 12 items; D3 related to distal motor capacity by 7 items and the total score which includes all of the three dimensions. In order to analyze the specific motor function according to the evaluation stage, the patients were divided into 3 groups: ambulatory, non-ambulatory and those who lost the ability to walk during the study. The results showed that there was stability in the ambulatory motor function patients about 10-14 months after the beginning of corticosteroids treatment in D1 and total score MFM. We saw improvements in D2 for the first six months followed by some loss after 14 months, and improvement for D3 during all the study. In those patients who lost the ability to walk and were non-ambulatory, there was functional loss in the last visits, except for distal motor capacity (D3), which kept stable during 18 months. We conclude that the MFM scale is an effective tool for detecting the disease progression showing some improvements periods as well as the stability moments due to specifics treatments. It is possible to detect changes in a short interval which helps the choices for the adequate management at the patients revaluation. The D1 subscore of MFM scale shows to be appropriate in monitoring ambulant patients, which is useful for predicting future loss of motor function of patients with DMD
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Salsman, Charles P. "Application of Multi-Frequency Modulation (MFM) for high-speed data communications to a voice frequency channel." Thesis, Monterey, California : Naval Postgraduate School, 1990. http://handle.dtic.mil/100.2/ADA238019.
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Thesis (M.S. in Electrical Engineering)--Naval Postgraduate School, June 1990.Thesis Advisor(s): Moose, P.H. Second Reader: Miller, J. H. "June 1990." Description based on title screen as viewed on October 20, 2009. DTIC Identifier(s): Voice Communications, Data Communications, Signal To Noise Ratio, Theses. Author(s) subject terms: Communications, Multi-Frequency Modulation, High-Speed Modems. Includes bibliographical references (p. 93-94). Also available in print.
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Crouïgneau, Guillaume. "Films de type Ni-Co-Mn-In : élaboration et étude de la transformation magnétostructurale." Thesis, Université Grenoble Alpes (ComUE), 2015. http://www.theses.fr/2015GREAY048/document.
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Les alliages Heusler de type Ni-Mn-X (X=In, Ga, Sn et Sb) possèdent d'intéressantes propriétés mécaniques, magnétiques et thermiques qui découlent de la transition structurale martensite-austénite. Le couplage de ces propriétés entraîne de potentielles applications dans le domaine des actionneurs, des capteurs ou des refroidisseurs. La fabrication de ces matériaux en films, d'un grand intérêt pour les microsystèmes, reste difficile à maitriser et fait l'objet de ce travail de thèse. Une partie du travail effectué durant cette thèse porte donc sur l'élaboration d'un film de type Ni-Co-Mn-In en utilisant un procédé de co-pulvérisation. L'objectif de la thèse a porté sur l'obtention d'un film présentant une transition structurale et magnétique à température ambiante. Après une étude de la structure et de la microstructure des phases martensite et austénite, les propriétés magnétiques ont été investiguées. Le changement d'état magnétique obtenu pour certains films lors de la transition du premier ordre a entrainé des propriétés magnétocaloriques et d'actionnement intéressantes. Les meilleurs résultats sont obtenus pour un film de composition Ni45,2Co4,7Mn36,2In13,9. La réalisation de mesures de résistivité sous champ magnétique intense constitue un sujet novateur sur des films de ce type. Grâce à ces mesures, une étude de l'irréversibilité et du blocage de la transformation structurale induit par le champ magnétique (kinetic arrest) a été réalisée. La compréhension des phénomènes intervenant dans l'hystérésis thermique et le blocage sous champ magnétique est en effet importante pour les applications basées sur ces matériaux à fort couplage mécanique, magnétique et thermiqueNi-Mn-X (X=In, Ga, Sn and Sb) Heusler type alloys present interesting mechanical, magnetical and thermal properties owing to the martensite-austenite structural transition. Combining these properties induce many potentials applications in the field of actuators, sensors and coolers. Processing these materials into films is of great interest for micro-devices but remains a challenge. It shall be the purpose of this thesis. Part of this thesis shall be dedicated to the development of a Ni-Co-Mn-In Heusler film using a co-sputtering process. The main achievement of the thesis is to have obtained a film exhibiting a structural and magnetic transformation at room temperature. After a study of the structure and microstructure of martensite and austenite phases, magnetic properties are investigated. The evolution of the magnetic state during the first order transformation observed in some films leads to interesting magnetocaloric and activating properties. Optimal results, both in terms of working temperature and functional properties, are obtained for a film with a composition of Ni45,2Co4,7Mn36,2In13,9. Resistivity measurements under high magnetic field are novel on such films. These new measurements have made it possible to study the irreversibility and phase transformation blocking induced by a magnetic field (kinetic arrest). Understanding the physical effect underlying the thermal irreversibility and the blocking by a magnetic field is indeed important for applications based on such materials with strongly coupled mechanical, magnetical and thermal properties
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Pokrovskiy, S., I. Rudnev, A. Podlivaev, and M. Osipov. "Method and Experimental Setup for the Study of the Local Current Distribution in Conducting Micro-and Nanostructures." Thesis, Sumy State University, 2012. http://essuir.sumdu.edu.ua/handle/123456789/35220.
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The method for the study of the spatial distribution of current in micro-and nanostructures on the
measured magnetic field is presented. The methods of studies the magnetic field distribution of conducting
nanostructures by passing a transport current are considered. The technique of current recovery from experimental
data is offered.
When you are citing the document, use the following link http://essuir.sumdu.edu.ua/handle/123456789/35220
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Jamet, Ségolène. "Etude des parois de domaines dans les nanofils magnétiques." Thesis, Université Grenoble Alpes (ComUE), 2015. http://www.theses.fr/2015GREAY068/document.
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Ce travail de thèse porte sur l'étude des parois de domaines dans des nanofils magnétiques. Nous avons étendu le diagramme de phase des parois de domainesdéjà connu pour des géométries allant des nanobandes aux nanofils. Les différents types de parois et des transitions de phases sont présentés.Nous avons introduit de nouveaux estimateurs s'appuyant sur des grandeurs physiques connues, pour mieux caractériser les configurations magnétiques des parois et prédire leur type en fonction de la géométrie.Pour valider notre approche théorique, nous nous sommes ensuite intéressés à les observer par microscopie.Nous avons choisi le Dichroisme Circulaire Magnétique des rayons X associé à la Microscopie par Emission de PhotoElectrons (XMCD-PEEM). Ce type de microscopie permet d'atteindre une résolution spatiale suffisante pour observer les parois de domaine. Les configurations expérimentales (échantillons et dispositif expérimental) permettent d'avoir accès à la fois à l'aimantation de surface maisaussi à l'ombre du fil projetée sur le substrat. Cette ombre contient l'information sur l'aimantation dans le volume, moyennée le long du chemin desrayons X dans le matériau. Cette configuration donne lieu à des contrastes magnétiques complexes. Nous avons donc développé un modèle permettant de simuler le contraste XMCD à partir de configurations micromagnétiques à l'équilibre. La comparaison entre les contrastes expérimentaux et les contrastes simulés donne lieu à un très bon accord quantitatif.De plus, les paramètres expérimentaux ont été étudiés afin d'obtenir le meilleur contraste réflétant au mieux la configuration micromagnétique de l'échantillon.La suite de ce travail consistera, notamment, à étudier la propagation de la paroi point de Bloch dans les nanofilsThe work performed during my thesis was based on magnetic domain walls in magnetic nanowires. We extended the phase diagram of domain walls already known to a geometry ranging from nanostrips to nanowires. The various types of domain wall and transition phase types are presented. We introduced new estimators based on physical known features, in order to better characterize domain walls magnetic configurations of domain walls and then to predict the type of domain wall according to the geometry.To validate our theoretical approach, we were interested in imaging these domain walls. We chose the X-ray Magnetic Circular Dichroism along with the PhotoEmission Electron Microscopy (XMCD PEEM). This microscopy method enables to reach spatial resolution required to observed domain wall configuration. The experimental conditions (sample and set up) enable to have access both the surface magnetization and also the shadow of the wire projected on to the substrate. This enable caries information about volume magnetization, averaged along the path of the X-ray through the wire. This experimental configuration gives rise to complex contrasts. Thus, we developped a model that enables to simulate the XMCD contrast from steady state micromagnetic configurations. Comparison between experimental and simulated contrasts gives rise to a good quantitative agreement. Moreover, experimental parameters were studied in order to get the best magnetic contrast, reflecting the true magnetic configuration of the sample.For the future, the work consists in the study of the domain wall propagation in nanowires, particularly the propagation of the Bloch point wall
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Warren, Jack. "Fabrication and characterisation of novel materials and devices for spintronics." Thesis, University of Manchester, 2018. https://www.research.manchester.ac.uk/portal/en/theses/fabrication-and-characterisation-of-novel-materials-and-devices-for-spintronics(ac352bea-9068-4642-9fa8-f7412881463b).html.
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The spintronic materials graphene and FeRh are of great scientific and technological interest due to their unique properties. Graphene's remarkable electronic transport and low spin interaction suggest it could be a near-perfect spin-transport material, while the equiatomic alloy FeRh undergoes a first-order antiferromagnetic (AF) to ferromagnetic (FM) phase transition when heated through a critical temperature ~370 K. Combining these materials could lead to a single multifunctional spin injection, transport and detection device in which a range of stimuli - heat, magnetic field, strain etc. - could be used to manipulate the device state. However, realisation of such a multifunctional device is extremely challenging. This thesis describes the progress made in developing a novel method of spin injection into graphene, and details a study of the metamagnetic phase transition in FeRh nanowires suitable for use as spin injection and detection electrodes. The measured values of spin lifetime and spin diffusion length in graphene are an order of magnitude lower than those predicted theoretically. In this project, a novel 1D contact geometry was investigated to determine whether the dwelling of spins underneath tunnel barrier contacts was the cause of the discrepancy. Although these devices exhibited very high charge carrier mobility - indicating successful device fabrication, defect-free graphene flakes and low levels of contamination - no spin signals were observed. Through a thorough investigation of this unexpected result it was determined that the quality of the graphene/- ferromagnetic interface was limiting the polarisation of injected spin current. The use of FeRh as a novel spin injection and detection material was investigated through magnetic force microscopy imaging of the AF and FM phases during heating and cooling sweeps. The results from FeRh full-films showed a strong dependence on surface morphology, as certain surface types were observed to favour the FM phase. These behaviours were confirmed in patterned nanowire devices, which indicated that the dependence on surface topology dominated over spatial confinement effects. In order to perform these studies a magneto-transport measurement system capable of performing measurements over a wide temperature range 2 K - 500 K in a rotatable magnetic field of up to 750 mT was developed. The noise base of the completed system was measured at just 10% above the theoretical minimum level.
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FIN, Samuele. "An insight into the role of magnetic anisotropies in the behavior of thin films and arrays of nanoparticles." Doctoral thesis, Università degli studi di Ferrara, 2015. http://hdl.handle.net/11392/2389120.
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In this thesis work we discussed the properties of magnetic materials derived by the reduction of at least one of the spatial dimensions under the micrometer scale: in particular we analyzed the origin of some magnetic behaviors in magnetic nanostructures like thin films and arrays of nanodots.
One of the important properties which is strongly affected by the size reduction and in which is contained most of the physical description of a magnetic system is the anisotropy energy term: a direction-dependent parameter which strongly contributes to the determination of the equilibrium state and magnetic behavior. We described various nanostructured systems concentrating prevalently on thin films and arrays of interacting nanoparticles and for each system the origin and the physical implications of magnetic anisotropy is discussed.
In thin magnetic films, two types of magnetic anisotropies are presented: Perpendicular Magnetic Anisotropy which has a crystalline origin and competes with the shape anisotropy of the thin film producing a singular type of magnetic domains called “stripes” and the Rotatable Anisotropy (the easy magnetic direction is not fixed but could be rotated by means of an external magnetic field). We tried to give a better explanation and modeling of the Rotatable Anisotropy, making a parallelism between the static and dynamic experimental evidences.
We performed also a description of the interaction of magnetic dots in arrays with different symmetry and with finite dimensions. In particular we discovered a peculiar space-dependent behavior that we called “Global Configurational Anisotropy”, that has a strong importance when the dimension of the array becomes comparable with the dimension of the nanoparticles.
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Vock, Silvia. "Resolving Local Magnetization Structures by Quantitative Magnetic Force Microscopy." Doctoral thesis, Saechsische Landesbibliothek- Staats- und Universitaetsbibliothek Dresden, 2014. http://nbn-resolving.de/urn:nbn:de:bsz:14-qucosa-148019.
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Zur Aufklärung der lokalen Magnetisierungs- und magnetischen Streufeldstruktur in ferromagnetischen und supraleitenden Materialien wurden magnetkraftmikroskopische (Magnetkraftmikroskopie-MFM) Untersuchungen durchgeführt und quantitativ ausgewertet. Für eine solch quantitative Auswertung muss der Einfluß der verwendeten MFM-Spitzen auf das MFM-Bild bestimmt und in geeigneter Weise subtrahiert werden. Hierzu wurden Spitzenkalibrierungsroutinen und ein Verfahren zur Entfaltung der gemessenen MFM-Daten implementiert, das auf der Wiener Dekonvolution basiert. Mit Hilfe dieser Prozedur können sowohl die räumliche Ausdehnung als auch die Größe der Streufelder direkt aus gemessenen MFM-Bildern bestimmt werden.
Gezeigt wurde diese Anwendung für die Durchmesserbestimmung von Blasendomänen in einer (Co/Pd)-Multilage und für die Bestimmung der temperaturabhängigen magnetischen Eindringtiefe in einem supraleitendem BaFe2(As0.24P0.76)2 Einkristall. Desweiteren konnte durch die Kombination von mikromagnetischen Rechnungen und der quantitativen MFM-Datenanalyse die Existenz einer dreidimensionalen Vortex-Struktur am Ende von Co48Fe52-Nanodrähten nachgewiesen
werden. Damit ist es gelungen die Tiefensensitivität der Magnetkraftmikroskopie erfolgreich in die Rekonstruktion der vermessenen Magnetisierungsstruktur einzubeziehen.
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Femenia, Marc. "Corrosion Behavior of Duplex Stainless Steels in Acidic-Chloride Solutions Studied with Micrometer Resolution." Doctoral thesis, KTH, Materials Science and Engineering, 2003. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-3484.
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The local corrosion behavior of duplex stainless steel (DSS)is affected by a wide variety of factors. Localized corrosionof DSS frequently starts at micrometer scale inclusions orprecipitates, which are often segregated in theaustenite-ferrite boundary regions. Moreover, due to thepartitioning of the key alloying elements of ferrite (Cr andMo) and austenite (N and Ni), the local interactions betweenthe phases must also be considered.
The aim of this doctoral study was to increase the knowledgeabout the local dissolution behavior of DSS in acidic-chlorideenvironments. The recent developments of new local probingtechniques have opened a new frontier in corrosion science,providing valuable local information not accessible in thepast. The local techniques used include electrochemicalscanning tunneling microscopy (EC-STM), scanning probe forcemicroscopy (SKPFM), magnetic force microscopy (MFM), andscanning Auger electron Spectroscopy (SAES), all withmicrometer or sub-micrometer resolution.
With EC-STM, it was possible to monitor local dissolutionprocesses on DSS in situ, and in real time. MFM was capable ofimaging the phase distribution in DSS without the need of thetraditional surface etching, while SKPFM revealed that theVolta potential difference between the two phases wasmeasurable and significant. SAES showed that the compositiongradient at the phase boundaries is narrower than 2µm.
Different types of DSSs have been studied, from low-alloyedDSS to superduplex. Higher contents of Cr, Mo and Nstrengthened both phases as well as the phase boundaries,resulting in phases having similar corrosion resistance thatshowed a more uniform dissolution behavior. However, the Voltapotential difference between the phases proved to be of thesame order for all the DSSs studied. Austenite was in generalassociated to regions displaying a more noble Volta potentialthan ferrite, resulting in a higher dissolution rate of theferrite next to the austenite phase.
Key words:In situ, local dissolution, electrochemical,STM, SKPFM, MFM, SAES, duplex stainless steel, acidic-chloridesolution.
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Scott, Kevin. "Fabrication and Characterization of Magnetic Nanostructures." Scholar Commons, 2014. https://scholarcommons.usf.edu/etd/5437.
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Magnetic permalloy nanostructures were fabricated onto a silicon wafer using electron beam lithography and a liftoff process. The lithography was performed with a Hitachi SU-70 SEM retrofitted with a Nabity NPGS lithography conversion kit. PMMA of 950kDa molecular weight was used as the photoresist. Features were either nanowires, nanodots, or elliptical or rectangular nanostructures. The nanowires had dimensions of 15µm x 200nm x 40nm, the nanodots had diameters of 145nm and thickness of 12nm, and the ellipses and rectangles had dimensions of 110nm x 50nm x 13nm. Characterization of the nanostructures was performed using the same Hitachi SEM as well as a Digital Instruments DI 3100 Nanoscope IIIa AFM used in magnetic force imaging mode. The SEM was used to measure lateral dimensions of the features and to capture images of features for proper documentation and for external simulation studies. The MFM was used to capture magnetic images of the samples to determine the magnetic state of the nanowires or arrays.
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Pedrosa, Ana Karla da Silva Moura. "Validação da versão brasileira da escala \"Medida da Função Motora - Versão Reduzida (MFM-20)\" para doenças neuromusculares em crianças de dois a sete anos de idade." Universidade de São Paulo, 2015. http://www.teses.usp.br/teses/disponiveis/5/5138/tde-11092015-145232/.
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Introdução: As doenças neuromusculares (DNM) abrangem diversas afecções que se caracterizam pela presença de fraqueza muscular. Idealmente, os instrumentos de medida da habilidade motora funcional devem ser validados para a faixa etária na qual o diagnóstico é realizado, ocorrendo escassez de medidas funcionais para avaliação da função motora em crianças pequenas com DNM. A Medida da Função Motora (MFM-32), no Brasil validada como MFM-P, é um instrumento desenhado para monitorar a gravidade e progressão da função motora em pacientes de seis a sessenta anos de idade com DNM. Como a mesma não foi validada em crianças menores de seis anos de idade, os pesquisadores do Serviço de Reeducação Pediátrica L\'Escale, (França) criadores da versão original, desenvolveram a versão reduzida desta escala, denominada \"Motor Function Measure - Short Form (MFM-20) \", adaptada à faixa etária de dois a sete anos de idade. Objetivos: Realizar o estudo de confiabilidade e validar a escala \"Medida da Função Motora - Versão Reduzida (MFM-20) \" na língua portuguesa do Brasil. Métodos: Foi realizada a tradução literária e conceitual da MFM-20. A versão em português foi denominada \"Medida da Função Motora- Versão Reduzida (MFM-20) \" e posteriormente foi realizada a tradução reversa. Um comitê revisou todas as versões. Após pré-teste numa amostra de cinco sujeitos, não houve necessidade de modificações, e a versão final da MFM-20 foi aplicada a vinte e seis crianças com diagnóstico de DNM. Para avaliar a reprodutibilidade intraexaminador, o Teste de Wilcoxon foi empregado para as duas aplicações da escala, as quais tiveram um intervalo de uma semana. A fim de avaliar a reprodutibilidade interexaminador na aplicação da escala por duas fisioterapeutas, no primeiro dia de avaliação, os escores foram comparados com o Teste t de Student. Para verificar as validades de constructos convergente entre a MFM-20 e a Escala Motora Funcional Hammersmith (EMFH), o Índice de Barthel (IB) bem como a Escala de Vignos e Brooke (EVB), e a validade de constructo discriminante, entre a MFM-20 e a escala MRC (força muscular), foi utilizado o Coeficiente de Correlação de Pearson. Resultados: Fizeram parte do estudo vinte e seis sujeitos, com média de idade de 4,6 ± 1,5 anos, com os seguintes diagnósticos: distrofia muscular de Duchenne (n=9), distrofia muscular congênita (n=5), miopatia congênita (n=6) e amiotrofia espinhal progressiva tipo II (n=6). Os itens da MFM-20 não necessitaram de nenhuma modificação em relação à adaptação cultural. A análise de confiabilidade demonstrou boa reprodutibilidade intraexaminador no dia 1 (35,88±8,80) e no dia 7 (36,96±8,99), p=0,065, além de boa reprodutibilidade interexaminador, sendo: examinador 1, 35,88±8,80 e examinador 2, 35,08±9,16, com p=0,747. A análise de validade convergente demonstrou boa correlação entre a MFM-20 e a EMFH (coeficiente de correlação =0,907), a EVB (coeficiente de correlação = - 0,918) e o IB (coeficiente de correlação =0,797), com p<= 0,05. A análise da validade discriminante demonstrou correlação positiva entre a MFM-20 e a escala MRC que avalia força muscular (coeficiente de correlação = 0,873), com p<= 0,05. Conclusões: A versão brasileira da MFM-20 foi devidamente validada, representando avanço na avaliação dos pacientes com DNM dos centros brasileiros, permitindo acompanhar a evolução motora a partir dos dois anos até os sessenta anos de idade (MFM-20 e MFM-P)Introduction: Neuromuscular diseases (NMD) include a large number of conditions, whose main characteristic is a loss of muscular strength. Ideally, measurement tools should be validated for the age at which the diagnosis is made. There is a lack of tools to assess motor functional abilities in young children with NMD. The Motor Function Measure (MFM-32), validated in Brazil as MFM-P, is a tool designed to monitor the severity and progression of motor function in patients with NMD, aged six to sixty years. As this version was not validated in children under six years of age, the authors of the original version, from the Pediatric Reeducation Service L\'Escale (France), developed the Motor Function Measure - Short Form (MFM-20), designed for children with two to seven years of age. Objectives: The aim of this study was to verify the reliability and validity of the \"Medida da Função Motora - Versão Reduzida (MFM-20)\" in Brazilian Portuguese language of Brazil. Method: The literal and conceptual translation of the MFM- 20 was performed. The Portuguese version was called \"Medida da Função Motora - Versão Reduzida (MFM-20)\", and then the reversal translation was made. A committee revised all these versions. After a pretest in a sample of five subjects, no modification was necessary, and the final version of MFM-20 was applied to twenty-six children with NMD. To verify the intra-rater reliability, the Wilcoxon Test was utilized for the two scale applications within one-week interval. To verify inter-rater reliability concerning the scale application by two physical therapists at the first day of assessment, Student\'s t-Test was applied. To verify the converging construct validity between MFM-20 and Hammersmith Motor Functional Scale (HMFS), Barthel\'s Index (BI) and Vignos and Brooke Scale (VBS), as well as the discriminating construction validity between MFM-20 and MRC Scale (muscular force), Pearson Correlation was applied. Results: Twenty six patients with mean age 4,6 ± 1,5 years old were included in the study, with the following clinical diagnosis: Duchenne\'s muscular dystrophy (n=9), congenital muscular dystrophy (n=5), congenital myopathy (n=6) and Type 2 spinal muscular atrophy (n=6).MFM-20\'s items did not need any cultural adaptation. The reliability analysis demonstrated good reproducibility for intra-rater on day 1 (35,88±8,80) and day 7 (36,96±8,99), p=0,065, and good inter-rater reproducibility, as follows: examiner 1, 35,88±8,80 and examiner 2, 35,08±9,16, ?=0,05 e p=0,747. The converging validity analysis demonstrated good correlation between MFM-20 and HMFS, VBS as well as BI, with correlation\'s coefficients of 0,907, - 0,918 and 0,797, respectively. The discriminating validity analysis demonstrated positive correlation between MFM-20 and MRC Scale (muscular force) with a correlation\'s coefficient 0,873. Conclusions: The Brazilian Portuguese version of the MFM-20 had a proper validation, representing advances for patients from Brazilian\'s centers, diagnosed with NMD, allowing the follow-up of the motor functional evolution in patients from two to sixty years of age (MFM-20 and MFM-P)
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Gomes, Lisboa de Souza Adriana. "Développement d'un outil d'aide à l'évaluation motrice d'enfants atteints de maladies neuromusculaires par des kinésithérapeutes." Thesis, Université Grenoble Alpes, 2020. http://www.theses.fr/2020GRALI045.
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La MFM est une échelle d'évaluation fonctionnelle validée pour le diagnostic et le suivi clinique des patients atteints une maladie neuromusculaire. Elle permet d’anticiper les besoins d'adaptation des patients, de fournir un langage commun à tous les professionnels et d’évaluer les effets des différents traitements thérapeutiques. Pour améliorer les performances des mesures, la reproductibilité des évaluations et la participation des patients, il est proposé de développer un outil d'assistance aux thérapeutes basé sur des technologies accessibles. Cette thèse est ainsi développée selon quatre axes de recherche: (1) le choix d'un capteur de mouvement 3D en remplacement du capteur KinectTM de Microsoft, (2) le développement un logiciel sur Tablette pour l'évaluation de la motricité fine, (3) la proposition d‘un environnement ludique pour motiver les jeunes patients lors des évaluations et (4) des propositions pour intégrer l'outil à la pratiques actuelle des thérapeutes. Ce contexte de travail suggère fortement l’utilisation d’une approche de conception centrée sur l'utilisateur (CCU), dans laquelle les thérapeutes et patients sont sollicités pour exprimer leurs besoins à chaque étape du processus de conception. Comme résultats, en remplacement de la Kinect, le capteur VicoVr a montré une meilleure performance dans le contexte de la MFM que le capteur Intel® RealSense™. Le logiciel développé de cotation automatique de la motricité fine TabMe2 a obtenu de très bons résultats pour 3 items considérés de la MFM. 7 animations ludiques pour la MFM ont été développées selon une approche issue du développement de Serious Games. Enfin, une d’intégration de tous les outils développés a été proposée par l’intermédiaire d’une interface sur mesure déjà familière des kinésithérapeutes, pour en faciliter leur adhésionThe MFM is a validated functional evaluation scale for the diagnosis and clinical monitoring of patients with neuromuscular disease. It anticipates the adaptation needs of patients, provides a common language for all professionals and assesses the effects of different therapeutic treatments. To improve the performance of measurements, the reproducibility of evaluations and patient participation, it is proposed to develop a tool, based on accessible technologies, for assisting therapists. Thus, this thesis is developed along four research axes: (1) the choice of a 3D motion sensor to replace the Microsoft KinectTM sensor, (2) the development of software on a Tablet for the assessment of fine motor skills, (3) the proposal of a playful environment to motivate the young patients during the evaluations and (4) proposals to integrate the tool into the current practices of the therapists. This working context strongly suggests the use of a user-centered design approach (UCD), in which therapists and patients are asked to express their needs at each stage of the design process. As results, replacing the Kinect, the VicoVr sensor showed better performance in the context of MFM than the Intel® RealSenseTM sensor. The automatic fine motor rating TabMe2 software developed obtained very good results for 3 items considered from the MFM. 7 fun animations for the MFM were developed according to an approach resulting from the development of Serious Games. Finally, an integration of all the tools developed has been proposed through a custom interface already familiar to physiotherapists, to facilitate their adherence
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Felton, Solveig. "Tunable Magnetic Properties of Transition Metal Compounds." Doctoral thesis, Uppsala : Acta Universitatis Upsaliensis : Univ.-bibl. [distributör], 2005. http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-5939.
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Wolny, Franziska. "Magnetic properties of individual iron filled carbon nanotubes and their application as probes for magnetic force microscopy." Doctoral thesis, Saechsische Landesbibliothek- Staats- und Universitaetsbibliothek Dresden, 2011. http://nbn-resolving.de/urn:nbn:de:bsz:14-qucosa-72457.
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Iron filled carbon nanotubes (FeCNT) can be described as carbon nanotubes which contain an iron nanowire of several micrometers length and a diameter of approximately 10-100 nm. The carbon shells protect the iron core from oxidation and mechanical damage thus enabling a wide range of applications that require a long-term stability. The magnetic properties of the enclosed nanowire are in part determined by its small size and elongated shape. Magnetic force microscopy (MFM) measurements show that the iron wire exhibits a single domain behavior. Due to the large shape anisotropy it is magnetized along the long wire axis in the remanent state. Two magnetic monopoles of opposing polarity are located at the wire extremities. Depending on the structure and geometry of the individual nanowire, switching fields in the range of 100-400 mT can be found when the external field is applied along the FeCNT’s easy axis. Cantilever magnetometry shows that the switching can be attributed to a thermally assisted magnetization reversal mechanism with the nucleation and propagation of a domain wall. The defined magnetic properties of individual FeCNT combined with their mechanical strength make them ideal candidates for an application as high resolution high stability MFM probes. The fabrication of such probes can be achieved with the help of a micromanipulation setup in a scanning electron microscope. FeCNT MFM probes achieve a sub 25 nm lateral magnetic resolution. MFM measurements with FeCNT MFM probes in external fields show that the magnetization of these probes is exceptionally stable compared to conventional coated MFM probes. This greatly simplifies the data evaluation of such applied field MFM measurements. The emphasis of this work was put on the calibration of FeCNT probes to enable straightforward quantitative MFM measurements. The defined shape of the magnetically active iron nanowire allows an application of a point monopole description. Microscale parallel current carrying lines that produce a defined magnetic field are used as calibration structures to determine the effective magnetic moment of different MFM probes. The line geometry is varied in order to produce multiple magnetic field decay lengths and investigate the influence on the effective probe moment. The results show that while the effective magnetic monopole moment of a conventional MFM probe increases with an increasing sample stray field decay length, the effective moment of a FeCNT MFM probe remains constant. This enables a MFM probe calibration that stays valid for a large variety of magnetic samples. Furthermore, the fitted monopole moment of a FeCNT probe (in the order of 10E-9 Am) is consistent with the moment calculated from the nanowire geometry and the saturation magnetization of iron.
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Roy, Pierre E. "On Some Properties and Applications of Patterned Ferromagnetic Thin Films." Doctoral thesis, Uppsala : Acta Universitatis Upsaliensis, 2006. http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-7091.
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Novaes, Carolina Duca. "Redes de redistribuição de sinais a partir de redes de freqüência única (SFN)." Universidade Presbiteriana Mackenzie, 2010. http://tede.mackenzie.br/jspui/handle/tede/2760.
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Previous issue date: 2010-02-10This dissertation presents details of a structure needed to create a Single Frequency Network (SFN) using low-power transmitters, and a comparison with a network composed of a single transmitter with high power. Among the difficulties to implement networks which distribute signals in SFN, has prioritized the synchronization issue and equalization techniques to achieve better performance of this system. Thus, there was a theoretical research comparing the different methods of timing of single frequency networks and simulations of coverage and performance in order to discuss the implementation of such a network system in the Brazilian digital TV (SBTVD).
Este trabalho apresenta um detalhamento da estrutura necessária para se criar uma rede Single Frequency Network (SFN) utilizando transmissores de baixa potência, bem como um comparativo com uma rede composta por um transmissor único de alta potência. Dentre as dificuldades de se implementar as redes de redistribuição de sinais em SFN foi priorizada a questão do sincronismo e técnicas de equalização que permitam um melhor desempenho desse sistema. Para isso foi realizada uma pesquisa teórica comparativa entre os diferentes métodos de sincronismo de redes de frequência única e simulações de cobertura e desempenho, visando discutir a implementação desse tipo de rede no sistema Brasileiro de TV digital (SBTVD).
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Thielsch, Juliane. "Wechselwirkungsdomänen in permanentmagnetischen Seltenerd-Übergangsmetall-Verbindungen." Doctoral thesis, Saechsische Landesbibliothek- Staats- und Universitaetsbibliothek Dresden, 2015. http://nbn-resolving.de/urn:nbn:de:bsz:14-qucosa-163196.
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Im Rahmen der Dissertation wurde das Phänomen der Wechselwirkungsdomänen sowohl experimentell als auch unter Zuhilfenahme mikromagnetischer Simulationen untersucht. Gegenstand der Untersuchungen waren einphasige NdFeB-Magnete, die durch Heißpressen und anschließender Warmumformung hergestellt wurden. Zusätzlich wurden über den gleichen Herstellungsweg Kompositproben aus NdFeB und Fe mit unterschiedlichen Partikelausgangsgrößen erhalten und studiert.
Korrelationsuntersuchungen verschiedener Messmethoden haben gezeigt, dass im thermisch entmagnetisierten Zustand die Grenzen der Wechselwirkungsdomänen an der Oberfläche größtenteils entlang von Korngrenzen verlaufen. Mittels in-situ MFM wurden erstmalig Untersuchungen von Wechselwirkungsdomänen an massiven NdFeB-Magneten im Magnetfeld durchgeführt. Die Ummagnetisierung erfolgt dabei über die Bewegung der Domänengrenze durch schrittweises Wandern von einer Korngrenze zur benachbarten. Die Beweglichkeit der Domänengrenzen ist durch das Haften an den Korngrenzen gehemmt, was sich in der geringeren Suszeptibilität der warmumgeformten Magnete im Vergleich zu Sintermagneten bemerkbar macht.
Aufgrund der eingestellten Mikrostruktur in den warmumgeformten Magneten kann folglich gesagt werden, dass die Ummagnetisierungsprozesse sowohl Merkmale von klassischen Nukleations-, als auch von klassischen Pinningmagneten aufweisen. Mit Hilfe von mikromagnetischen Simulationen konnte eine Eindomänenteilchengröße prismatischer Partikel mit quadratischer Grundfläche ermittelt werden. Außerdem konnte gezeigt werden, dass der Winkel des Streufeldvektors eine entscheidende Rolle bei Ummagnetisiserungsprozessen in solchen Partikeln spielt. Die Superposition des Streufeldvektors mit dem Vektor des angelegten Feldes führt zu einem Gesamtfeldvektor, dessen Winkelabhängigkeit ein Stoner-Wohlfarth ähnliches Verhalten zeigt.
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Salles, Benjamin. "Propriétés magnétiques, électriques et structurales et transport polarisé en spin dans des structures hybrides MnAs-GaAs." Phd thesis, Université Pierre et Marie Curie - Paris VI, 2010. http://tel.archives-ouvertes.fr/tel-00570216.
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Le couplage d'un métal ferromagnétique (MF) et d'un semiconducteur (SC) permettrait d'intégrer un nouveau degré de liberté - le spin - aux propriétés logiques et optiques des semiconducteurs. Cependant, l'élaboration de jonctions tunnel magnétiques (JTM) couplant ces deux types de matériaux (barrières MF/SC/MF) présente des difficultés majeures. En effet, à la température de croissance optimale de la barrière semiconductrice (∼580 ◦C), le métal de l'électrode inférieure diffuse à travers l'interface pour s'incorporer à la barrière et ainsi réduire les effets de magnétorésistance. Pour éviter l'interdiffusion, la barrière doit être élaborée à basse température. Ce procédé implique l'incorporation d'antisites d'As dans la barrière SC qui réduit, encore une fois, les effets magnétorésistifs. Le couple MnAs/GaAs est considéré comme un bon candidat pour la réalisation de jonction hybride MF/SC /MF à cause de la faible réactivité et de la forte polarisation à l'interface. Afin de faire croître des JTM de bonne qualité chimique et cristalline, nous avons étudié des jonctions tunnel originales où l'électrode inférieure est une couche de clusters de MnAs dans une matrice de GaAs (GaAs:MnAs). Cet électrode est couvert par une barrière de SC III-V et par une électrode supérieure composée par une couche continue de MnAs. Le protocole de croissance de l'électrode inférieure (recuit in situ d'une couche de GaMnAs à T>500řC) permet simultanément de recuire la barrière semiconductrice et d'augmenter considérablement la qualité structurale et chimique de la barrière. Ce travail a été réalisé en trois parties. Dans un premier temps, les conditions d'élaboration de couches de GaAs:MnAs/GaAs(001) et de MnAs/GaAs(001) ont été optimisées. Ensuite, nous avons mené des études originales de microscopie à gradient de force magnétique et de spectroscopie de photoémission (in situ et au synchrotron). Ces mesures ont permis de faire ressortir des informations pertinentes pour l'intégration de ces couches en tant qu'électrode magnétique pour l'électronique de spin. Enfin, une étude du transport tunnel polarisé en spin a été conduite sur des jonctions tunnel MnAs/SC III-V/GaAs:MnAs.
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Doupal, Antonín. "Studium vlastností kovových tenkých vrstev a nanostruktur pomocí rastrovací sondové mikroskopie." Master's thesis, Vysoké učení technické v Brně. Fakulta strojního inženýrství, 2010. http://www.nusl.cz/ntk/nusl-229111.
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This diploma thesis is focused on investigation of metallic thin films and nanostructures using scanning probe microscopy. Magnetic properties of these objects are studied by magnetic force microscopy, which is modification of scanning probe microscopy. In the theoretical part basic principles of scanning probe microscopy and magnetic force microscopy are summarized, and also principle of creation of magnetic domains and some special properties of ferromagnetic and antiferromagnetic materials. Further, two techniques of fabricating nanostructures are described. Experimental part is focused on imaging and simulating of magnetic domains. Further, exchange bias is revealed. This phenomenon is present in systems composed from ferromagnetic and antiferromagnetic materials. One part of this diploma thesis is also focused on discussion of problems with magnetic force microscopy.
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Vuillerot, Carole. "Métrologie et évaluation fonctionnelle motrice dans les maladies neuromusculaires de l’enfance : Illustrations à partir de la Mesure de Fonction Motrice (MFM) et d’une classification en grades de sévérité d’atteinte fonctionnelle motrice (NM-Score)." Thesis, Lyon 1, 2012. http://www.theses.fr/2012LYO10081/document.
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Les progrès de la recherche et de la prise en charge des maladies neuromusculaires de l’enfance ont prolongé la survie des patients. L’évaluation s’impose donc pour le suivi des patients et aussi en recherche clinique car les premiers essais cliniques tant attendus commencent à paraître. Une métrologie rigoureuse et adaptée est alors indispensable parce qu'il n'est possible ni de se contenter d’une quantification approximative ni d'utiliser des outils non adaptés à des pathologies évolutives. Nous résumons l’état des connaissances sur la métrologie appliquée à l’évaluation fonctionnelle motrice des patients atteints de maladies neuromusculaires et proposons une revue de la littérature sur les outils disponibles avec des analyses précises de leurs propriétés métrologiques. La Mesure de Fonction Motrice, développée à partir de 1998, présente des qualités intéressantes en termes de validité et de fiabilité. Nous avons analysé sa sensibilité au changement dans différentes populations de patients adultes et enfants. Nous proposons ensuite, une classification en grades de sévérité d’atteinte fonctionnelle motrice, le NM-score. Les études de validation ont confirmé son intérêt, sa facilité d'utilisation, sa validité et sareproductibilité. Le NM-Score permet de décrire précisément et de façon discriminante les patients en termes de fonction motrice pour la position debout et les transferts, la motricité axiale ou proximale et la motricité distale. S’intéresser à l’évaluation et à la mesure en médecine, c’est faire preuve d’une rigueur indispensable aux décisions de soins touchant des personnes vulnérables aux besoins spécifiquesAdvances in the research and treatment of childhood neuromuscular diseases have led to longer patient survivals. Evaluation is thus required not only in clinical practice for patient follow-up but also in medical research because the results of long-awaited clinical trials are beginning to emerge. A rigorous and appropriate metrology is then necessary because rough estimates or the use of improper assessment tools are no more satisfactory. We summarize here the current knowledge on the metrology applied to motor function assessment of patients with neuromuscular diseases. We propose a review of the literature on the tools available to monitor motor function with detailed analyses of their metrological properties. Developped since 1998, the Motor Function Measure presents interesting properties in terms of validity and reliability. We analyzed its sensitivity to change in different patient populations of adults and children. We then propose, the NM-Score, a classification in levels of severity of motor function decline.Validation studies have confirmed the interest of this score as well as its ease of use, validity,and reproducibility. The NM-Score is able to describe the patients precisely and discriminantly in terms of motor function for standing position and transfers, axial / proximal motor function and distal motor function. Being interested in evaluation and measurement in medicine is a sign of rigor necessary for decision-making regarding vulnerable persons with special need
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Novotný, Ondřej. "Korelovaná sondová a elektronová mikroskopie pro studium moderních magnetických nanomateriálů." Master's thesis, Vysoké učení technické v Brně. Fakulta strojního inženýrství, 2021. http://www.nusl.cz/ntk/nusl-443751.
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High pressure on the development of new magnetic materials and their miniaturization also emphasizes the development of new analytical techniques. This diploma thesis deals with the development and demonstration of correlated magnetic force and electron microscopy, which is a promising tool for the characterization of magnetic nanomaterials. The first part of this thesis describes the fundamental physics of micromagnetism with a focus on cylindrical nanofibers. The following pages describe optic, probe, electron, and synchrotron methods for mapping the magnetic properties of materials. The next part describes magnetic domain wall motion in cylindrical nanowires performed as a part of a more extensive material study. The last part of the thesis describes the development of correlated magnetic force and electron microscopy on LiteScope device. A production of magnetic probes was designed and successfully tested. Probes were fabricated by focused electron beam-induced deposition from the Co2(CO)8 precursor. Further, the developed correlated microscopy is demonstrated on a multilayer PtCo sample, magnetic cylindrical nanofibers, NiFe vortex structures, and FeRh metamagnetic nano-islands.
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Mechehoud, Fayçal. "Croissance par voie électrochimique et propriétés magnétiques et topographique de couches minces de Co sur Si(111)." Thesis, Mulhouse, 2016. http://www.theses.fr/2016MULH7833/document.
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Nous avons réalisé des couches minces de Co sur un substrat semi-conducteur (Si(111)) par voix électrochimique, en mode potentiostatique et en mode galvanostatique, et étudié leurs propriétés topographiques (AFM, MEB) et magnétique (RMN, effet Kerr, SQUID), afin de relier ces propriétés aux modes de croissance et aux conditions de dépôt à priori identiques conduisent à des morphologies et donc des propriétés magnétiques très différentes. Nous avons développé une approche rigoureuse avec un contrôle systématique de la qualité du substrat de départ pour clarifier les modes de nucléation et de croissance en fonction du potentiel appliqué en chronoampérométrie. Une transition d’un mode de nucléation instantanée vers un mode de nucléation progressive en fonction du potentiel appliqué est mise en évidence. La modélisation à l’aide du modèle de Scharifker-Hills des modes de nucléation et de croissance est cohérente avec les images de topographie AFM. La croissance est tridimensionnelle du type Volmer-Weber et l’aimantation est orientée dans le plan. Par RMN et également X-Ray Photoemission Spectroscopy (XPS), nous montrons qu’une couche d’hydroxyde de cobalt magnétiquement morte se forme à l’interface avec le Si. En mode galvanostatique, des grains avec des facettes parfaitement cristallisés présentent des domaines magnétiques localisés dans la plupart des ilots. Nous avons également effectué une étude très critique des techniques de dépôt/arrachage employées dans la littérature montrant que celle-ci sont inadaptées aux substrats semi-conducteur, un dépôt subsistant sur la surface quel que soit la technique d’arrachage choisieWe have deposited thin layers of Co on a semiconductor substrate Si(111), by electrochemical method, in potentiostatic and galvanostatic mode, and we have studied their topographic properties (AFM, MEB) and magnetic (RMN, effet Kerr, SQUID). Thanks to these different techniques, we could relate these properties to the growth modes and to the a priori identical deposition conditions, which lead to different morphologies and therefore different magnetic properties. We have developed a rigorous approach with a systematic control of the quality of the substrate in order to clarify the nucleation and growth modes as a function of the potential applied in chronoamperometry. A transition from an instantaneous nucleation mode to a progressive nucleation mode as a function of the applied potential is highlighted. Modeling with Scharifker-Hills model of nucleation and growth modes is consistent with AFM topography images. The growth is three-dimensional of a Volmer-Weber type and the magnetization is oriented in the plane. By NMR and also X-Ray Photoemission Spectroscopy (XPS), we could show that a layer of magnetically dead cobalt hydroxide layer forms at the interface with Si. In galvanostatic mode, grains with perfectly crystallized facets have magnetic domains located in most of the islands. We have also carried out a very critical study of the deposition / tearing techniques used in the literature showing that they are unsuitable for semiconductor substrates, a deposit remaining on the surface whatever the tearing technique chosen
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Vanhaverbeke, Antoine. "Corrélations entre hétérogénéités magnétiques ettransport électrique dans des nanostructures." Phd thesis, Université Pierre et Marie Curie - Paris VI, 2005. http://tel.archives-ouvertes.fr/tel-00121862.
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L'objectif de ce travail de thèse est de comprendre l'influence deshétérogénéités magnétiques sur les propriétés de transport de
nano-structures de la spintronique. Pour le mener à bien, on a développé un
Microscope à Force Magnétique (MFM) original qui fonctionne à la
température ambiante sur une large gamme de champ. Le
caractère innovant de notre approche a été de développer un MFM capable de
mesurer in-situ les propriétés de transport, ceci afin de les corréler avec
la visualisation des domaines et parois magnétiques.
L'étude d'une structure hybride métal/isolant (une bicouche grenat/nickel) a per
mis d'étudier le couplage à l'interface ainsi que la rigidité sur une dizaine de
microns du réseau de domaines dans le grenat.
Dans une deuxième phase, on s'est intéressé au déplacement d'une paroi
induit par un courant électrique. Nous avons développé un modèle classique
simple pour expliquer le transfert de spin d'un courant polarisé traversant une
paroi de domaines, ainsi qu'un nouveau mécanisme basé sur le chargement électriq
ue des parois par effet Hall. Nos études expérimentales sur l'injection de coura
nt dans des échantillons de cobalt ultra-fins à aimantation perpendiculaire, mon
trent que l'effet de dépiégeage des parois domine largement dans ce système. Nou
s expliquons ce phénomène par un effet de déformation de la structure interne de
la paroi induite par le courant.
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Nilsson, Per. "Conceptual Product Development in Small Corporations." Licentiate thesis, Högskolan Dalarna, Maskinteknik, 2010. http://urn.kb.se/resolve?urn=urn:nbn:se:du-4821.
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The main objective of the thesis “Conceptual Product Development in Small Corporations” is by the use of a case study test the MFD™-method (Erixon G. , 1998) combined with PMM in a product development project. (Henceforth called MFD™/PMM-method). The MFD™/PMM-method used for documenting and controlling a product development project has since it was introduced been used in several industries and projects. The method has been proved to be a good way of working with the early stages of product development, however, there are almost only projects carried out on large industries which means that there are very few references to how the MFD™/PMM-method works in a small corporation. Therefore, was the case study in the thesis “Conceptual Product Development in Small Corporations” carried out in a small corporation to find out whether the MFD™/PMM-method also can be applied and used in such a corporation.The PMM was proposed in a paper presented at Delft University of Technology in Holland 1998 by the author and Gunnar Erixon. (See appended paper C: The chart of modular function deployment.) The title “The chart of modular function deployment” was later renamed as PMM, Product Management Map. (Sweden PreCAD AB, 2000). The PMM consists of a QFD-matrix linked to MIM (Module Indication Matrix) via a coupling matrix which makes it possible to make an unbroken chain from the customer domain to the designed product/modules. The PMM makes it easy to correct omissions made in creating new products and modules.In the thesis “Conceptual Product Development in Small Corporations” the universal MFD™/PMM-method has been adapted by the author to three models of product development; original-, evolutionary- and incremental development.The evolutionary adapted MFD™/PMM-method was tested as a case study at Atlings AB in the community Ockelbo. Atlings AB is a small corporation with a total number of 50 employees and an annual turnover of 9 million €. The product studied at the corporation was a steady rest for supporting long shafts in turning. The project team consisted of management director, a sales promoter, a production engineer, a design engineer and a workshop technician, the author as team leader and a colleague from Dalarna University as discussion partner. The project team has had six meetings.The project team managed to use MFD™ and to make a complete PMM of the studied product. There were no real problems occurring in the project work, on the contrary the team members worked very well in the group, having ideas how to improve the product. Instead, the challenge for a small company is how to work with the MFD™/PMM-method in the long run! If the MFD™/PMM-method is to be a useful tool for the company it needs to be used continuously and that requires financial and personnel resources. One way for the company to overcome the probable lack of recourses regarding capital and personnel is to establish a good cooperation with a regional university or a development centre.
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Charbois, Vincent. "Détection mécanique de la résonance ferromagnétique." Phd thesis, Université Paris-Diderot - Paris VII, 2003. http://tel.archives-ouvertes.fr/tel-00003970.
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Cette thèse concerne l'étude d'un nouvel outil expérimental d'investigation de la dynamique de l'aimantation, adapté à la mesure de nanostructures magnétiques. Cette technique, la Microscopie par Résonance Ferromagnétique (f-MRFM), s'inspire des microscopies à sonde locale pour réaliser une détection mécanique de la Résonance Ferromagnétique (RFM). Un dispositif original a été mis au point. Ses performances sont caractérisées par l'étude d'un disque de grenat magnétique de 160 microm. de diamètre. Les résultats démontrent une sensibilité et une résolution spectrale adaptées à la mesure d'échantillons microscopiques individuels, et permettent de conclure quant à la configuration la plus judicieuse en terme d'intensité du signal ou de résolution spatiale pour l'imagerie des excitations magnétiques. Cette technique permet en outre de remonter à une information quantitative sur la RFM, capacité qui est utilisée pour obtenir une mesure directe du temps de relaxation longitudinal T1.
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Warnicke, Peter. "Tailored Properties of Ferromagnetic Thin Films." Doctoral thesis, Uppsala universitet, Institutionen för teknikvetenskaper, 2008. http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-9403.
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Magnetic thin films and patterned nanostructures have been studied with respect to their magnetic properties using SQUID-magnetometry, magnetic force microscopy, electrical measurements, and micromagnetic calculations. Properties of vortex domain walls, trapped in Permalloy nanowires with artificial constrictions, were investigated experimentally and by numerical calculations. In particular, the geometrical extent and strength of the pinning potential were evaluated. In these wires, long-range vortex domain wall displacement induced by spin polarized alternating currents was obtained numerically at reduced threshold current densities as compared with the direct current case. Due to the asymmetry of the energy potential, the long-range displacement direction is determined by the vortex chirality. Strained FeCo/Pt superlattices with strong perpendicular anisotropy were investigated experimentally. The strain was controlled by varying the thickness of each alternating layer with monolayer precision and was found to have a dominating effect on the total anisotropy. Epitaxial films of the diluted magnetic semiconductor (Ga,Mn)As were studied with focus on how the ferromagnetic transition temperature could be controlled by post-growth annealing. The ferromagnetic transition temperature was enhanced by approximately 85% for a Mn-doping concentration of 6% under certain conditions. A method to manipulate micrometer sized magnetic particles on patterned arrays of elliptical Permalloy microstructures was studied. Controlled motion and separation of the magnetic particles were obtained using applied rotating magnetic fields. The domain structure of the elliptical elements was studied numerically.
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Xu, Danhua. "A Study of magnetic thin film corrosion mechanisms with the development of a novel on-line coupling technique and with Microstructural and Magnetic Cross-Sectional Profiling Techniques." Full text open access at:, 2008. http://content.ohsu.edu/u?/etd,648.
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Furkin, Jennifer D. "MOM TO MOM: ONLINE BREASTFEEDING ADVICE." UKnowledge, 2018. https://uknowledge.uky.edu/comm_etds/64.
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Exploring online support groups has gained more and more popularity in the last decade. Investigating the type of support messages users send each other has broadened the already extensive social support framework built in the last forty years. Mothers utilize online support for various topics, and a very common topic is breastfeeding. The perception of breastfeeding has changed throughout history with shifting beliefs and societal norms coupled with solid facts about its importance in the sustaining of infants. Online breastfeeding support has been previously explored through the categorization of types of support and themes within the interactions. This study extended this by investigating deeper into the advice solicitation patterns and directness of advice patterns. Results indicated that informational support most commonly was responded to support seekers. Support seekers utilized the requesting an opinion or information solicitation type most often when posting to the discussion board. Mothers most commonly offered storytelling as responses to posts and embedded advice within the stories.
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Rein, Trine. "Mini-MAM." Thesis, Norges teknisk-naturvitenskapelige universitet, Institutt for elektronikk og telekommunikasjon, 2014. http://urn.kb.se/resolve?urn=urn:nbn:no:ntnu:diva-25967.
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As the amount of digital content outside the broadcasting industry increase, the need for Media Asset Management systems among this new wave of content owners has increased. An efficient, user friendly and cheap MAM system is required to satisfy their demands, a system we will denote as "Mini-MAM". A MAM system is the core component for a content owner in organizing their content and associated metadata. Traditionally, MAM systems are complex and expensive systems, where most features are unnecessary for the intended users of a Mini-MAM. The goal of this thesis, is to design, implement, and test a proposed Mini-MAM system, that fits the demands of these new content owners.The thesis will explain the basics of a MAM system, and explore the importance of metadata in terms of content management. The thesis will also indentify the primary requirements of the Mini-MAM system in order to meet the demands of small and non traditional content owners. This thesis highlights the important decisions made during the development of the system, as well as the obstacles that had to be overcome. The Mini-MAM is written using Python, relying primarily on the Tkinter library to create the interface. The Mini-MAM also relies on the SQLite database management system to store persistent data, and the ffmpeg media framework for transcoding.\\The system has also been compared to a commercial exhibition management system in subjective assessment of the two systems. The other system to be assessed was the Expoloy XMS system, designed to manage the content of exhibition centres and museums. The assessment had 14 subjects perform basic tasks on the two systems, before answering a questionnaire where the subjects rate the user friendliness and usability of each system. The results from the subjective assessment showed that the Mini-MAM was the more user friendly system.The participants rated the systems on a scale from 1-5, where 1 is bad, and 5 is excellent. The participants rated their general impression of the Mini-MAM's user friendliness a score within the 95\% confidence interval of 3.60-4.25. In comparison, the participans rating of the XMS System that fell inside the 95\% confidence interval of 1.64-2.51. 100\% of the users also reported that, as non-experts, they preferred the Mini-MAM system.From the results of the subjective assessment, is clear that the Mini-MAM fulfils its role as a user friendly and intuitive system. Despite the XMS system being a far more extensive and powerful system, the complexity of the system confused the untrained participants. The Mini-MAM fulfils the basic requirements outlined in the thesis, and is easy to for new users. Despite being a prototype, the Mini-MAM shows promise, and can with further development, become a commercially viable system.
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Weiss, Maria. "American Mom." Scholarship @ Claremont, 2017. http://scholarship.claremont.edu/scripps_theses/935.
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Wakrim, Tariq. "Commutation de capacitance dans les mémoires résistives (ReRAM), application aux mémoires d’impédance (ZRAM ou mem-capacitors)." Thesis, Université Grenoble Alpes (ComUE), 2018. http://www.theses.fr/2018GREAT085/document.
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Les mémoires résistives ReRAM (ou memristors) sont destinées à remplacer les mémoires non volatiles Flash. Les ReRAM utilisent le changement de résistance d’une structure MIM (Métal-Isolant-Métal) soumise à un stress en tension. Jusqu’à présent, l’attention était focalisée sur les mécanismes qui régissent la commutation de résistance dans les dispositifs ReRAM. Moins d’attention a été accordée à la variation de capacitance, c'est-à-dire à la variation de capacité des structures MIM lorsque ces dernières sont soumises à un stress en tension. C’est sur ce dernier point que notre travail porte. Nous étudions la variation d’impédance (conductance et capacitance dans le domaine RF) dans des structures MIM à base de HfO2. Au-delà d’une tension seuil (Set) une diminution de la capacitance est observée, conjointement à une augmentation de conductance. Des cycles mémoires capacité-tension (C-V) et conductance-tension (G-V) sont obtenus de manière reproductible. Des caractérisations en fréquence (C-f et G-f), sous différentes polarisations continues, sont effectuées pour mieux comprendre les mécanismes de commutation de l’impédance. La diminution de capacitance dans l’état conducteur (ON) est attribuée au caractère inductif des filaments conducteurs formés pendant l’étape de Set. Les mécanismes de transport conduisant à l’apparition de ce caractère inductif sont discutés. Nous montrons également l’influence du procédé de dépôt (ALD) de HfO2 sur les caractéristiques C-V et G-V, ainsi que les modifications apportées par l’emploi d’une structure bicouche. Ce travail ouvre la voie à la réalisation de dispositifs à mémoire de capacitance (mem-capacitors), et plus généralement de composants à mémoire d’impédance (ZRAM). Le potentiel de ces dispositifs pour réaliser un filtre reconfigurable (programmable en tension) est démontré d’une manière pratiqueResistive random access memories (ReRAM) hold great potential for replacing Flash memories. A ReRAM memory (or MEMRISTOR) uses a resistive switching phenomenon found in Metal-Insulator-Metal (MIM) structures under a voltage stress. Most researches were focused on the mechanisms governing the resistance switching in ReRAM devices and less attention has been paid to capacitance variation of MIM structures under a voltage stress. Our work is focused on that latter phenomenon. We study impedance variation (conductance and capacitance in the RF domain) in HfO2-based MIM structures. Above a threshold voltage (Set), concurrently to conductance increase, a decrease in the capacitance value is observed. Reproducible capacitance-voltage (C-V) and conductance-voltage (G-V) memory cycles are obtained. Frequency dependent characterizations (C-f and G-f), under different DC bias voltages, are performed with the aim of understanding the mechanisms of impedance switching. The capacitance decrease observed in the conducting (ON) state is attributed to the inductance of the filament created during the Set stage. Transport phenomena responsible for the filament inductive behavior are discussed. Impact of HfO2 deposition process (ALD), as well as the use of bi-layer structures, on C-V and G-V characteristics are shown. This work paves the way for the realization of new capacitance memory devices (mem-capacitors) and most generally for impedance memories (ZRAM). Potential of these devices to design reconfigurable filters (controlled by voltage bias) is demonstrated in a practical way
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Palma, Y?skara Arrial. "Mam?e e... mam?e? : apresentando as fam?lias homomaternais." Pontif?cia Universidade Cat?lica do Rio Grande do Sul, 2011. http://tede2.pucrs.br/tede2/handle/tede/742.
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Previous issue date: 2011-03-03A presente disserta??o refere-se ao estudo das fam?lias constitu?das por mulheres que se identificam como l?sbicas e possuem filhos e/ou filhas. Atrav?s de tr?s artigos, o objetivo de conhecer como essas mulheres est?o vivenciando a maternidade nas rela??es de conjugalidade l?sbica pode ser discutido e melhor compreendido. O primeiro artigo introduz o tema relacionado ?s fam?lias e ? sua diversidade, com ?nfase nas fam?lias homomaternais; o segundo artigo relaciona a linguagem com os estudos de g?nero e as quest?es legais da paternidade e maternidade associadas ? orienta??o sexual e o terceiro artigo apresenta as narrativas das m?es l?sbicas sobre suas fam?lias homomaternais. Atrav?s de perspectivas feministas de g?nero, ? poss?vel fazer entrela?amentos e tra?ar di?logos entre as tem?ticas estudadas e as teorias que referem-se ? elas. Levando em considera??o que os estudos feministas de g?nero utilizados neste estudo buscam uma rela??o igualit?ria entre homens e mulheres, onde o feminino n?o seja mais oprimido e subjugado pelo masculino e a heterossexualidade n?o seja tida como norma, as reflex?es que seguem perpassam esses assuntos e convidam outras ci?ncias a dialogarem tamb?m. Entendemos que ? preciso haver o conhecimento e compreens?o da diversidade das fam?lias existentes, neste caso, das fam?lias homomaternais, para que possam ter a sua cidadania respeitada em todos os seus aspectos, contribuindo para a exist?ncia de uma sociedade mais justa e solid?ria.
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Porobic, Damir Verona. "MFA thesis exhibition." Morgantown, W. Va. : [West Virginia University Libraries], 2005. https://eidr.wvu.edu/etd/documentdata.eTD?documentid=4189.
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Thesis (M.F.A.)--West Virginia University, 2005.Title from document title page. Document formatted into pages; contains vi, 30 p. : ill. (some col.). Includes a video file in the QuickTime format. Includes abstract. Includes bibliographical references (p. 30).
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Paulos, Emily Almeda. "The mom project." Thesis, The mom project website: Thesis summary:, 1999. http://ir.uiowa.edu/etd/193.
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Thesis (M.A.)--University of Iowa, 1999.Supervisor: Steve Thunder-McGuire. Title-page, preliminaries, Certificate of approval, and Thesis summary issued in paper (iii, 15 leaves, bound ; 28 cm.). Title-page, preliminaries, Certificate of approval, and Thesis summary also issued on CD-ROM (3 files, 62.7 kilobytes).
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Cuevas, Santamaría Sergio Axel. "My MFA Experience." The Ohio State University, 2018. http://rave.ohiolink.edu/etdc/view?acc_num=osu1524073680662621.
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Faria, Bruno Miguel Cunha. "M2M management platform." Master's thesis, Universidade de Aveiro, 2014. http://hdl.handle.net/10773/14715.
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Mestrado em Engenharia de Computadores e TelemáticaThe Internet of Things is still a fast growing area and topic of interest. New solutions and implementations keep emerging, both in service oriented solutions or device oriented solutions with M2M communications, therefore promoting the creation of new business models. Thus, as a natural evolution, came the possibility to abstract sensor management from service creation. Allowing a delegation of sensor management from the sensor providers, to focus on content creation through services. However, this delegation brings new concerns regarding access control. Consequently, this dissertation proposes a possible solution to this problem, enclosed in a service oriented platform interconnected with an ETSI M2M solution. Promoting interoperability between sensors and allowing a great elasticity in service creation.
A Internet das Coisas continua a ser uma área em grande crescimento e de grande interesse. Estão constantemente a surgir novas soluções e inplementações, tanto ao nível dos serviços como ao nível das comunicações Máquina-a-Máquina, promovendo assim o aparecimento de novos modelos de negócio. Desta forma surgiu naturalmente a possibilidade de abstrair a gestão de sensores da criação de serviços. Permitindo assim, uma delagação da gestão por parte de empresas detentoras de sensores, para se focarem no conteúdo com a criação de serviços. Contudo esta divisão acarreta algumas preocupações de segurança quanto ao controlo de acesso. Nesse sentido, esta dissertação propõe uma possível solução para o mesmo, englobada numa plataforma orientada ao serviços interligada com uma solução ETSI M2M. Promovendo a interoperabilidade entre sensores e permitindo assim uma grande elasticidade na criação de serviços.
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Torres, Vilma Farias. "O programa mem?ria viva e a mem?ria social da UFRN." Universidade Federal do Rio Grande do Norte, 2014. http://repositorio.ufrn.br:8080/jspui/handle/123456789/16429.
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Previous issue date: 2014-08-22O trabalho investiga que contribui??es o Programa Mem?ria Viva, exibido pela TV Universit?ria, fornece para a constru??o da mem?ria social audiovisual da Universidade Federal do Rio Grande do Norte UFRN, analisando as entrevistas realizadas com os reitores da institui??o entrevistados no programa. A pesquisa fundamenta-se em tr?s aportes te?ricos distintos: a abordagem narrativa de Joseph Campbell (1999), desenvolvida e adaptada ao jornalismo por Lima (2008) e Martinez (2008); a no??o de Mem?ria Social elaborada por Jacques Le Goff (2000); e, finalmente, a hermen?utica midi?tica de John Thompson, que permite uma s?ntese dessas refer?ncias anteriores e uma orienta??o metodol?gica integrada de diferentes t?cnicas de pesquisa. Analisamos o programa dentro da perspectiva da jornada do her?i m?todo de estrutura??o de narrativas que se utiliza da perspectiva mitol?gica de Joseph Campbell e da psicologia humanista de Carl Gustav Jung que seria utilizado, de maneira inconsciente, como recurso para a constru??o das hist?rias de vida expostas no programa. Os reitores entrevistados contam n?o apenas a pr?pria hist?ria, no formato autobiogr?fico e narratol?gico estabelecido pela produ??o, mas delineiam tamb?m de forma direta ou indireta tamb?m a hist?ria da institui??o
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Karlsson, Patrik. "Demonstrationsutrustning för M2M tillämpning." Thesis, Linköping University, Department of Science and Technology, 2004. http://urn.kb.se/resolve?urn=urn:nbn:se:liu:diva-2532.
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Detta examensarbete är ett utvecklingsarbete av demonstrationsutrustning för enkel visning av fördelarna med M2M-tekniken vid insamling av mätdata och automatisk övervakning. Arbetet består av en praktisk del, som utgörs av demonstrationsväskan, och en mer teoretisk del, som utgörs av demonstrationsprogrammet.
Programmet har utvecklats till att med ett mätkort kopplat till en PC samla in mätvärden (spänningar), dessa skickas sedan som ett SMS med ett GSM-modem till en mottagare. Mottagaren kan vara en serviceman som vill ha felmeddelanden från utrustning inom dennes ansvarsområde, mottagaren kan även vara en server som rymmer en databas vilken används för att spara viktiga mätvärden för längre tid, t.ex. loggning av elförbrukning hos något kraftbolags kund.
Det hela har alltså resulterat i ett färdigt och väl fungerande program, som utför just det som är uppdraget ovan. Mätresultatenhar tillräcklig noggrannhet för detta uppdrag om att demonstrera fördelarna med M2M-tekniken, och mätresultatet kommer även fram till mottagaren i sin rätta form.
Detta betyder att M2M Communication AB nu kan demonstrera vinsten med M2M-tekniken för potentiell kund på ett enkelt och förklarande sätt. Integrerat i demonstrationsutrustningen har nu också företaget fått en enkel och självklar utrusning för att i praktiken se hur nya givare och annan utrusning fungerar ihop med ComHost 300 som är företagets primära produkt.
The goal with this master thesis is to develop a simple equipment to show the advantage of using M2M-technic when collect measured data and when using automatic monitoring of alarm and sensors. The thesis is divided in two parts, a practical part that corresponds to a case with sensors and equipment. The case is used to collect measure data to be used when demonstrating the theoretical part, which corresponds to the software program. The software program is developed to measure voltage with the data acquisition card, and then send them as a SMS text message via the GSM network. For this tasks the software also have to control the GSM-modem. This text message is either sent to a computer for logging in a database, or to the service department who owns the equipment measured.
This work has ended up in well function software that can be installed on a PC-system with a Windows 2000(tm) operation system. The accuracy on the measured data is good enough for the task to demonstrate the function of the M2M-technic. The text message is also arrive to the receiver as expected.
The result of this master thesis ends up giving the company M2M Communication AB the possibility to demonstrate the M2M-technic on a simple and explaining manner for a potential customer. Integrated in the new equipment the company also has been given a possibility to test new sensors and signal sources in a real world M2M test.
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Čvančarová, Lenka. "MDM of Product Data." Master's thesis, Vysoká škola ekonomická v Praze, 2012. http://www.nusl.cz/ntk/nusl-150246.
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This thesis is focused on Master Data Management of Product Data. At present, most publications on the topic of MDM take into account customer data, and a very limited number of sources focus solely on product data. Some resources actually do attempt to cover MDM in full-depth. Even those publications are typically are very customer oriented. The lack of Product MDM oriented literature became one of the motivations for this thesis. Another motivation was to outline and analyze specifics of Product MDM in context of its implementation and software requirements for a vendor of MDM application software. For this I chose to create and describe a methodology for implementing MDM of product data. The methodology was derived from personal experience on projects focused on MDM of customer data, which was applied on findings from the theoretical part of this thesis. By analyzing product data characteristics and their impacts on MDM implementation as well as their requirements for application software, this thesis helps vendors of Customer MDM to understand the challenges of Product MDM and therefore to embark onto the product data MDM domain. Moreover this thesis can also serve as an information resource for enterprises considering adopting MDM of product data into their infrastructure.
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Sacerdote-Peronnet, Myriam. "Etude cristallochimique d'interactions adsorbant-adsorbat dans des zéolithes présentant la topologie MFI : applications aux systèmes MFI-P-xylène et MFI-benzène." Lyon 1, 1992. http://www.theses.fr/1992LYO10028.
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Ce travail porte sur la mise en evidence d'interactions adsorbant/adsorbat (adsorbat=p-xylene, benzene) dans des materiaux microporeux zeolithiques polycristallins presentant la topologie mfi (silicalite, zsm-5). Des etudes par diffraction x et neutronique sur poudres et par modelisation theorique (minimisation d'energie basee sur les modeles de buckingham et de lennard-jones) ont abouti aux resultats suivants: dans le cas du systeme mfi/n p-xylene, il existe trois composes definis pour n=2, 4 et 8 molecules/maille, deux domaines diphases (0 n 2 et 4 n 8) et une solution solide (2 n 4). Entre 0 et 4 molecules/maille, les especes adsorbees occupent les intersections des canaux droits et en zig-zag. Dans la phase saturee (n=8), les molecules remplissent l'ensemble des canaux. Dans le cas du systeme mfi/n benzene, il se forme au moins cinq composes definis pour n=4, 6, 7, 7. 2 et 8 molecules/maille, trois domaines diphases (4 n 6, 6 n 7 et 7 n 7. 2) et une solution solide (7. 2 n 8). Jusqu'a n=4, le benzene est situe aux intersections. Dans le complexe mfi/6 benzene, 4 molecules occupent les intersections et 2 les canaux en zig-zag. Dans la phase saturee (n=8), le benzene ne remplit que les intersections et les canaux droits
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Deforth, Uwe. "Beitrag zur trockenen Synthese von MFI-Zeolithen und zeolithanalogen Materialien mit MFI-Struktur." [S.l. : s.n.], 2000. http://ArchiMeD.uni-mainz.de/pub/2000/0028/diss.pdf.
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Taouli, Abderrahim [Verfasser]. "Aciditäts- und Adsorptionsuntersuchungen an mesoporösen MCM-41- und MCM-48-Materialien / Abderrahim Taouli." Aachen : Shaker, 2003. http://d-nb.info/1172613982/34.
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Ryberg, Johanna. "Putin - mem och åter mem : Från krabba till tsar, från stålmannen till duva." Thesis, Stockholms universitet, Slaviska språk, 2020. http://urn.kb.se/resolve?urn=urn:nbn:se:su:diva-178270.
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Kinage, A. K. "Synthesis and characterization of gallosilicate (MFI) and galloaluminosilicate (MFI) zeolites for propane aromatization." Thesis(Ph.D.), CSIR-National Chemical Laboratory, Pune, 1996. http://dspace.ncl.res.in:8080/xmlui/handle/20.500.12252/2977.
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