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Dissertations / Theses on the topic 'EMF method'

Author: Grafiati
Published: 4 June 2021
Last updated: 1 February 2022

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1

Abdul, Malek Norun F. "3-D antenna array analysis using the induced EMF method." Thesis, Loughborough University, 2013. https://dspace.lboro.ac.uk/2134/13385.

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The effect of mutual coupling between elements plays a crucial role to the performance of the antenna arrays. The radiation patterns of antenna arrays will be altered by the coupling effect from the adjacent elements thus reducing the accuracy and resolution in direction finding application. This research developed and validated the novel 3-D Algorithm to calculate the far-field pattern of dipole arrays arranged in three dimensions and in any configuration (both in straight and slanted position). The effect of mutual coupling has been accounted using the Induced EMF method. The computation is performed on 2x2 parallel dipoles and 12 dipoles arranged at the edge of a cube. The results are validated with other electromagnetic techniques such as Method of Moment (MoM) and Finite Difference Time-Domain (FDTD). Then, a 2x2 dipole array is chosen for beam steering and experiment validation due to its ease of implementation and feeding network. The array optimisation to control the pattern is performed using a genetic algorithm. The far-field pattern computed using the 3-D algorithm might be less accurate than other 3-D electromagnetic techniques but its array optimisation is faster and efficient. The simulation and measurement results are in good agreement with each other confirmed the validity of the 3-D algorithm.
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2

Shao, Jianwen. "Direct Back EMF Detection Method for Sensorless Brushless DC (BLDC) Motor Drives." Thesis, Virginia Tech, 2003. http://hdl.handle.net/10919/35065.

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Brushlesss dc (BLDC) motors and their drives are penetrating the market of home appliances, HVAC industry, and automotive applications in recent years because of their high efficiency, silent operation, compact form, reliability, and low maintenance. Traditionally, BLDC motors are commutated in six-step pattern with commutation controlled by position sensors. To reduce cost and complexity of the drive system, sensorless drive is preferred. The existing sensorless control scheme with the conventional back EMF sensing based on motor neutral voltage for BLDC has certain drawbacks, which limit its applications. In this thesis, a novel back EMF sensing scheme, direct back EMF detection, for sensorless BLDC drives is presented. For this scheme, the motor neutral voltage is not needed to measure the back EMFs. The true back EMF of the floating motor winding can be detected during off time of PWM because the terminal voltage of the motor is directly proportional to the phase back EMF during this interval. Also, the back EMF voltage is referenced to ground without any common mode noise. Therefore, this back EMF sensing method is immune to switching noise and common mode voltage. As a result, there are no attenuation and filtering necessary for the back EMFs sensing. This unique back EMF sensing method has superior performance to existing methods which rely on neutral voltage information, providing much wider motor speed range at low cost. Based on the fundamental concept of the direct Back EMF detection, improved circuitry for low speed /low voltage and high voltage applications are also proposed in the thesis, which will further expand the applications of the sensorless BLDC motor drives. Starting the motor is critical and sometime difficult for a BLDC sensorless system. A practical start-up tuning procedure for the sensorless system with the help of a dc tachometer is described in the thesis. This procedure has the maximum acceleration performance during the start-up and can be used for all different type applications. An advanced mixed-signal microcontroller is developed so that the EMF sensing scheme is embedded in this low cost 8-bit microcontroller. This device is truly SOC (system-on-chip) product, with high-throughput Micro core, precision-analog circuit, in-system programmable memory and motor control peripherals integrated on a single die. A microcontroller-based sensorless BLDC drive system has been developed as well, which is suitable for various applications, including hard disk drive, fans, pumps, blowers, and home appliances, etc.
Master of Science
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3

Anguiano, Sanjurjo David. "Investigation of Hybrid Simulation Methods for Evaluation of EMF Exposure in Close Proximity of 5G Millimeter-Wave Base Stations." Thesis, KTH, Skolan för elektroteknik och datavetenskap (EECS), 2020. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-284324.

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With the emergence of Fifth Generation (5G) mobile networks, the employment ofhigher frequencies in the millimeter-wave (mmWave) range and the realization of agreat number of beams in 5G radio base stations (RBS) make the electromagnetic (EM)simulation of RBS products very costly in terms of hardware and time requirements.In order to compute the electromagnetic field (EMF) exposure in close proximity of theRBS, more efficient simulation methods are required.The move to mmWave frequencies enables the use of the so-called high frequencymethods for EM simulation with RBS antennas. In this thesis, conventional fullwavesimulation solvers and different implementations of hybridization of highfrequency methods with conventional methods are used with different commercial EMsimulation tools, and their performance is evaluated for the purpose of EMF exposureassessment in close proximity of 5G mmWave RBS.Among all the investigated methods, the hybrid scheme with Finite IntegrationTechnique (FIT) and Shooting and Bouncing Rays (SBR) methods, e.g., thatimplemented in CST Studio Suite 2020, outperforms in terms of hardwarerequirements and time costs, although the accuracy is compromised on the side andbehind the mmWave RBS. The Multilevel Fast Multipole Method (MLFMM), e.g.,that implemented in Altair FEKO 2019, though not a hybrid method, also has goodperformance but requires very large Random Access Memory (RAM), and it cannothandle very exquisite details of RBS. The Finite Difference Time Domain (FDTD)method implemented in EMPIRE XPU can also handle the investigated problemseffciently, but for extremely large problems, its requirements on RAM may become thebottleneck. In the thesis, many other hybrid implementations are also investigated,but it is found that they are not suitable for the EMF exposure assessment in closeproximity of the mmWave RBS with evaluation on a planar area of 0.42 m × 1 m at 28 GHz due to various reasons.
För den femte generationens (5G) mobilnät kommer användningen av millimetervågoroch det stora antalet lober som en radiobasstation (RBS) kan hantera att betydaett kraftigt ökat behov av hårdvara och större tidsåtgång för att göra beräkningarav exponeringen för elektromagnetiska fält nära utrustningen. Därför behövs mereffektiva simuleringsmetoder.Eftersom systemen opererar på millimetervåg-frekvenser kan högfrekvensmetoderanvändas i simuleringen av simuleringen av en RBS. I den här avhandlingenutvärderas konventionella metoder, samt olika hybridmetoder för beräkningenav EMF-exponeringen av millimetervågor i närheten av en RBS. De utvärderadehybridmetoderna är implementerade i olika mjukvaror och blandar användandet avhögfrekvensmetoder och konventionella metoder.Av alla utvärderade metoder fungerar hybridmetoden implementerad med finitaintegralmetoden (FIT) och ”Shooting and Bouncing Rays”-metoden (SBR) i CST bästi termer av vilken hårdvara som behövs för beräkningarna och för tidsåtgången.Dock är noggrannheten i beräkningarna på sidan av och bakom RBSen mindrebra. Multilevel Fast Multipole Method (MLFMM)”-lösaren i Feko i FEKO använderingen hybridmetod men presterar bra, men den kräver mycket RAM-minne och kaninte ta hänsyn till små detaljer i RBSen. Finita differensmetoden i tidsdomänen(FDTD) i EMPIRE kan också användas men dess RAM-krav blir en flaskhals förstora simuleringar. Ytterligare hybridmetoder är undersökta i avhandlingen men medslutsatsen att de inte är användbara (av olika anledningar) för beräkningen av EMFexponeringenfrån en RBS opererandes på frekvensen 28 GHz och över en yta som är0.42 x 1 m.
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4

Gambetta, Daniele Morco. "Sensorless technique for BLDC motors." University of Southern Queensland, Faculty of Engineering and Surveying, 2006. http://eprints.usq.edu.au/archive/00001427/.

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Commutation is a fundamental feature of all DC machines. In conventional DC machines the commutation function is performed by the commutator and brushes. These act as both position sensors and switches. The mechanical commutator has obvious disadvantages. Overcoming those disadvantages has been a major reason behind the development of brushless DC (BLDC) machines. In brushless DC machines commutation is performed by power electronic devices forming part of an inverter bridge. However, switching of the power electronic devices has to be synchronised with rotor position. Position sensing is therefore an essential requirement. This can be done by using sensors such as Hall Effect devices or a sensorless approach may be adopted. Advantages of sensorless techniques include reduced cost and wiring. The most common sensorless method is based on detection of the zero crossing of back EMF signals. But this technique works only above a certain speed since back EMF is directly proportional to speed. As a result BLDC systems which rely solely on back EMF signals for commutation suffer from relatively poor starting performance characterised by back rotation of up to one hundred and eigthty electrical degrees and large fluctuations in electromagnetic torque resulting from non-ideal commutation instants. This may not be acceptable for some applications and many researchers have attempted to overcome those problems. The aim of this project has been to investigate the possibility of a sensorless technique which does not cost more than the back EMF method but with a performance at start-up comparable with that obtained when Hall sensors are used. Initial investigations led to a saliency based method. Detailed theoretical analysis is presented which shows that the method is insensitive to variations in operational parameters such as load current and circuit parameters such as power device voltage drops and winding resistances. There is a close parallel between it and the back EMF method and this makes it easy to swap to the latter method at high speed if necessary. A starting strategy, relying on saliency related measurements, is proposed which offers starting performance much better than the back EMF method and almost as good as Hall sensor based techniques. Experimental evidence is provided to confirm that commutation instants determined by the proposed method are practically coincident with those obtained when Hall sensors are used.
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5

Paula, Geyverson Teixeira de. "Cálculo da força contra eletromotriz em máquinas síncronas com ímãs na superfície do rotor." Universidade de São Paulo, 2016. http://www.teses.usp.br/teses/disponiveis/18/18153/tde-14062016-113636/.

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O presente trabalho trata do cálculo da força contra eletromotriz em carga de uma máquina síncrona com ímãs na superfície do rotor (cuja forma de onda de força contra eletromotriz é não senoidal) sendo esta alimentada por correntes de fase cujas forma de onda são quadradas. Para conduzir esta investigação e calcular a força contra eletromotriz da máquina em estudo, faz-se uma revisão sobre o Método da Permeabilidade Fixa, método este que permite a linearização do ponto de operação da máquina. Dessa forma, as simulações são conduzidas por meio do método dos elementos finitos e do Método da Permeabilidade Fixa, levando-se em conta a forma de onda da corrente de alimentação. Atenção especial é dada ao modo que se analisa o fluxo concatenado e a forma de obtenção da força contra eletromotriz uma vez que as formas de onda do fluxo concatenado sofrem variações abruptas a cada 60º elétricos. Além destes parâmetros, analisa-se também cada uma das parcelas do torque eletromagnético, i.e., torque mútuo, torque de relutância e torque de borda, sendo realizado ao final do trabalho, uma comparação entre a soma da estimativa de cada parâmetro com o valor do torque eletromagnético obtido por meio de uma simulação não linear.
This work deals with the assessment of a surface mounted magnet synchronous machine\'s parameters (whose back-EMF is approximately trapezoidal) and that is fed by an ideal square current waveform. In order to investigate and describe each machine\'s parameter, a review on Frozen Permeability Method is presented. Some simulation by means of finite element method with the aid of Frozen Permeability Method are carried out taking into account that the machine is fed by an ideal square current waveform. The results for flux-linkage wave-form and back-EMF waveform are shown and analyzed. A special attention is given to back-EMF calculation since the linkage flux of each phase has an abrupt change every sixty electrical degrees due to the phase commutation. In addition, an attention is given to each torque component on load condition, i.e., mutual torque, reluctance torque, cogging torque and a comparison between the electromagnetic torque and the summation of these components.
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6

Wiid, P. Gideon. "Investigating cost-effective EMC methods." Thesis, Stellenbosch : University of Stellenbosch, 2005. http://hdl.handle.net/10019.1/1520.

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Thesis (MScEng (Electrical and Electronic Engineering))--University of Stellenbosch, 2005.
Due to the expensive nature of high frequency measurements in the EMC (Electromagnetic Compatability) field, more affordable methods of measurement instrumentation and environments are investigated. Different calibration methods for an Automatic Network Analyser (ANA) are evaluated against each other to determine the most cost-effective method of calibration. The mathematics for all the calibration methods are used in MATLAB programs which perform the error-calculation and correction which is usually done by the ANA software. These programs can be used to develop a simplified homebuilt ANA at reduced cost. The MATLAB program calibrations are compared to actual ANA calibrations to determine accuracy. Different measurement environments are considered as well to decide on a best compromise between cost and accuracy. To achieve this a reverberation chamber was built in which measurements were done and compared to measurements done on an Open Area Test Site. The Device Under Test was a standard radiator constructed specifically for such measurements. The development of both the radiator and the reverberation chamber are discussed and all the measurement results are considered in this thesis.
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7

Klauda, Zbyněk. "Návrh sběrnice LVDS s vysokou odolností EMC." Master's thesis, Vysoké učení technické v Brně. Fakulta elektrotechniky a komunikačních technologií, 2008. http://www.nusl.cz/ntk/nusl-217695.

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My thesis deals with project of LVDS busbar with high resistivity with regard to disturbance from surroundings and radiation undesirable electromagnetic waves into its environment. Project of LVDS busbar was elaborated by numeric methods and it was suggested optimal solution of the shape and material of multiply technology DPS. The project was realized on desired driving-point impenance of busbar Z=100 ohm with frequency f1=100 MHz of the first harmonic component rectangular signal of defind modality, entering and diagonal edge.
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8

Baccherini, Simona. "Pattern recognition methods for EMG prosthetic control." Master's thesis, Alma Mater Studiorum - Università di Bologna, 2016. http://amslaurea.unibo.it/12033/.

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In this work we focus on pattern recognition methods related to EMG upper-limb prosthetic control. After giving a detailed review of the most widely used classification methods, we propose a new classification approach. It comes as a result of comparison in the Fourier analysis between able-bodied and trans-radial amputee subjects. We thus suggest a different classification method which considers each surface electrodes contribute separately, together with five time domain features, obtaining an average classification accuracy equals to 75% on a sample of trans-radial amputees. We propose an automatic feature selection procedure as a minimization problem in order to improve the method and its robustness.
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9

Balling, Stefan. "Numerische Berechnung elektromagnetischer Felder - Erweiterung einer Hybridmethode aus Momentenmethode und Einheitlicher Geometrischer Beugungstheorie um die Verallgemeinerte Multipoltechnik." Doctoral thesis, Göttingen Sierke, 2007. http://d-nb.info/987235559/04.

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10

Karlsson, Lisa, and Elin Stuhr. "Biomekanisk mätmetod och ergonomisk analys av träningsmaskiner." Thesis, Halmstad University, School of Business and Engineering (SET), 2008. http://urn.kb.se/resolve?urn=urn:nbn:se:hh:diva-1620.

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To get the maximal output of your exercise in gym machines, there are different factors

to be considered. For example the strength of the muscle varies dependent on the position

of the muscles. To get the best results of the exercise the load has to reduce and increase

at specific positions.

This study was made in cooperation with Caretaker Scandinavia AB, a company for

sales, marketing and development in health care. They are general agent for Nordic Gym

who works with manufacturing of equipment and machines for gym and fitness.

The aim of this study was to generate a method of measurement to evaluate and control

the biomechanics of Nordic Gym´s workout equipment. A protocol for an ergonomic

analysis on the equipment has also been elaborated.

One of the methods to measure the biomechanics was to measure the torque through the

whole movement. The other method was electromyography (EMG). The EMGequipment

registers electric signals that are generated in a working muscle, and makes it

possible to see when the maximum muscle activity achieves. The results of those

measurements will be compared to the muscles strengthprofile which describes how the

muscle generates power in different positions throughout the movement.

To measure the ergonomics an ergonomic protocol where produced, which was based on

ergonomics aspect, adapted to gym machines.

The method of measurement where tested on Nordic Gym´s training machine 101SE leg

extension and Free Motion´s machine Leg Extension GZF18013 and this machines where

controlled and evaluated. Two test persons tried out the machines and the machines

where analysed in an ergonomic and a biomechanical perspective. The result shows that

the biomechanics of Nordic Gym´s machine where a bit better than the biomechanics of

FreeMotion´s machine. But in the both case the difference between the values of torque is

marginal, to improve the biomechanics insistence a bigger different should be necessary

to use. The ergonomic analyse of the machines showed that the ergonomics where good

and well planed. Both machines had some small ergonomic lacks, which can be

improved.

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11

Zhou, Weiqian. "Platform for ergonomic steering methods nvestigation of quot Segway-style quot balancing scooters." The University of Waikato, 2008. http://hdl.handle.net/10289/2423.

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Segway has been a popular production as an alternative transporter since its invention at the end of 20th century. Millions of people like for its ergonomic design and high-tech elements. It is predicted to be an innovational product to change a person's life style. This thesis focuses on building a simple low cost, home-made Segway style scooter. This project uses two electric scooter motors, two 12V car batteries, one accelerometer and several microprocessors to build up the whole system. Significantly, this project also explains how to build a Brushed Direct Current (BDC) motor driver with a rated output power of more than 350W and the capability of coping with up to 120A transient peak current and up to 40A continuous current. Four-quadrant operation and eight modes of DC motor operation are discussed. A mathematical model of the Segway style scooter is also introduced in details. This including the modelling of a BDC motor, a two-wheeled inverted pendulum and their combination. The linearization of these models is used. At the end the linearized model is simulated in computer software.
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12

Joubert, Michelle. "A finite element model for the investigation of surface EMG signals during dynami contraction." Pretoria : [s.n.], 2007. http://upetd.up.ac.za/thesis/available/etd-09042008-105943/.

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13

Šeděnka, Vladimír. "Numerická řešení problematiky EMC malých letadel." Doctoral thesis, Vysoké učení technické v Brně. Fakulta elektrotechniky a komunikačních technologií, 2013. http://www.nusl.cz/ntk/nusl-233594.

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Disertace popisuje současné problémy v certifikaci malých letadel, které by se měly v budoucnu řešit numerickým modelováním. Tento postup má zefektivnit návrh a zlevnit certifikaci letadel. Práce je úzce spjata s projektem HIRF-SE, který se problematikou certifikace letadel numerickými metodami zabývá. Podstatná část práce je věnována popisu dvou modulů pro platformu HIRF-SE: řešič BUTFE založený na metodě konečných prvků v časové oblasti a budicí nástroj BUTFE_EXC. Práce popisuje řešení pohlcujících okrajových podmínek, modelování disperzních a anizotropních materiálů a aproximaci tenkých drátů. Speciální pozornost je věnována řešení aproximace tenkých drátů s ostrými ohyby, jejíž současná formulace způsobuje překryvy mezi jednotlivými segmenty drátu.
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14

Zitzmann, Martin Ludwig. "Fast and efficient methods for circuit-based automotive EMC simulation." [S.l.] : [s.n.], 2007. http://deposit.ddb.de/cgi-bin/dokserv?idn=983386749.

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15

Xu, JiaPeng. "A Novel Nanoparticle Manipulation Method Using Atomic Force Microscope." The Ohio State University, 2009. http://rave.ohiolink.edu/etdc/view?acc_num=osu1243987021.

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16

Santolaria, Lorenzo José Alfonso. "SSCG methods of EMI emissions reduction applied to switching power converters." Doctoral thesis, Universitat Politècnica de Catalunya, 2004. http://hdl.handle.net/10803/6325.

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Many methods for EMI suppression have been developed in the last fifty years, most of them, showing a hardly change in its implementation. Traditional tools for EMI suppression are related to the use of filters, shielding techniques and new methods for layout improvement. These hardware techniques are normally supported with waveform shapes having themselves a lower spectral content. This kind of signals makes part of a different concept of EMI suppression that consists of limiting the spectral content in the signal itself. When possible, just waveforms with a lower spectral content should be used, this way making easier, simpler and cheaper the use of filters and other suppression means. In this line, EMI-reduction techniques such a Spread Spectrum Clock Generation (SSCG) are contributing to eliminate or limit the problem at the root, that is, at the signal itself.
This thesis is developed in several parts, corresponding to different chapters. A summary of these chapters is presented onwards:

After introduction in chapter 1, a wide theoretical development of the modulation and related concepts are presented in chapter 2. It is explained generically all aspects related to the modulation and particularly, to the frequency modulation. Main parameters of frequency modulation are presented and explained in detail and how practical considerations may affect to the theoretical behaviour of these parameters. Because the theoretical part of this thesis is completely based on the fundamentals of Fourier Transform, a sufficient explanation was thought to include for its right understanding . Finally, all this knowledge is summarized in a computational algorithm (MATLAB environment), capable of generating any frequency modulation of a sinusoidal carrier and the corresponding spectral components resulting from the modulation process.

Chapter 3 takes profit of the results obtained in Chapter 2 where it is possible to obtain the theoretical behaviour of the different modulation profiles of interest: sinusoidal, triangular, exponential and mixed waveforms. This way, chapter 3 is intended to completely understand and analyze the theoretical behaviour of these modulation profiles and be quantified according to several significant measure parameters. Afterwards, a comparison of these modulation profiles is carried out by means of the measure parameters defined previously. A proposal of control for a real power converter and theoretical considerations to apply a certain SSCG method to switching power converters are also included in this chapter.

After all aspects of frequency modulation by means of SSCG methods have been theoretically developed, it is mandatory the verification of the theoretical conclusions through an experimental test plant. Chapter 4 starts with the description, theoretical calculation and physical implementation of this test plant. Most practical considerations are here dealt with, like the influence of the Spectrum Analyzer's Resolution Bandwidth (RBW) on the measured EMI, a proposal of a practical method to select a valuable SSCG technique applied to Switching Power Converters, comparative measurements of conducted EMI within the range of conducted emissions (0 Hz 30 MHz) and a proposal about SSCG as a method to avoid interfering a certain signal.

Chapter 5 summarizes the whole conclusions gathered through the previous chapters and, finally, chapter 6 lists references related to the thesis, separated into different thematic groups.
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17

Bayram, Yakup. "Hybrid methods for mixed signal circuits subject to on & off - board electromagnetic interference." Columbus, Ohio : Ohio State University, 2006. http://rave.ohiolink.edu/etdc/view?acc%5Fnum=osu1158616495.

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18

Wang, Yao. "Simulation Method Development for Vehicle Radiated Immunity Test." Thesis, KTH, Skolan för elektroteknik och datavetenskap (EECS), 2019. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-246026.

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In the past few decades, on-board electronic devices have been developingtremendously in automotive industry, and it is believed that the trendof electrication and autonomous driving will sustain in the near future.Thus, passenger cars are going to suer from more severe electromagneticenvironment, especially from an EMC's perspective.This thesis is an investigation and overview on a possible simulationmethod applied to vehicle radiated immunity test in accordance withISO 11451-2 standard. The preliminary work of geometry clean-up onthe model obtained from structural dynamics department and the overallmethod development have been discussed. The main contribution of thisthesis is to build up a feasible workow that is suitable for vehicle EMCsimulations based on FEM electromagnetic simulation software ANSYSHFSS. In addition, some potential future work within this area is alsosuggested by the author.
Under de senaste decenniernas gång har elektroniken inom bilindustrinsett en kraftig utveckling, och att trenden pekar på batteridrivna och självkörande bilar som en trolig verklighet inom en snar framtid. Den utvecklingen kan också leda till att personbilar kan drabbas i en alltmer elektro-magnetisk omgivning, speciellt från EMC’s perspektiv.Denna uppsats har som syfte att undersöka och skapa en överblick genom en simulering som utfärdar ett strålningsimmunitets-test på ett fordon i enlighet med standarden ISO 11451-2. Det preliminära arbetet med geometri rening på modellen som erhållits från avdelningen för strukturdynamik och den övergripande metodutvecklingen har diskuterats. Det som med denna uppsats avser att bidra med i huvud-del är att bygga upp ett möjlig arbetsflöde som lämpar sig för EMC-simuleringar för fordon med FEM elektro-magnetiska simulations-mjukvaran ANSYS HFSS. Vidareställs frågor för ytterligare arbete och forskning av uppsats-författaren.
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19

Liu, Xiaoyang. "Generation of Heptagon-Containing Fullerene Structures by Computational Methods." Thesis, Virginia Tech, 2016. http://hdl.handle.net/10919/83480.

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Since the discovery three decades ago, fullerenes as well as metallofullerenes have been extensively investigated. However, almost all known fullerenes follow the classical definition, that is, classic fullerenes are comprised of only pentagons and hexagons. Nowadays, more and more evidence, from both theoretical and experimental studies, suggests that non-classical fullerenes, especially heptagon-containing fullerenes, are important as intermediates in fullerene formation mechanisms. To obtain fundamental understandings of fullerenes and their formation mechanisms, new systematic studies should be undertaken. Although necessary tools, such as isomer generating programs, have been developed for classical fullerenes, none of them are able to solve problems related to non-classical fullerenes. In this thesis, existing theories and algorithms of classical fullerenes are generalized to accommodate non-classical fullerenes. A new program based on these generalized principles is provided for generating non-classical isomers. Along with this program, other tools are also attached for accelerating future investigations of non-classical fullerenes. In addition, research to date is also reviewed.
Master of Science
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20

Woodward, Steven T. "Springback Calibration of Sheet Metal Components Using Impulse Forming Methods." The Ohio State University, 2011. http://rave.ohiolink.edu/etdc/view?acc_num=osu1306683543.

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21

Kimera, Sharadhuli I. "Methods for the design and evaluation of East Coast fever (ECF) control strategies." Thesis, University of Reading, 1998. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.242338.

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22

Tarullo, Viviana. "Artificial Neural Networks for classification of EMG data in hand myoelectric control." Master's thesis, Alma Mater Studiorum - Università di Bologna, 2019. http://amslaurea.unibo.it/19195/.

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This thesis studies the state-of-the-art in myoelectric control of active hand prostheses for people with trans-radial amputation using pattern recognition and machine learning techniques. Our work is supported by Centro Protesi INAIL in Vigorso di Budrio (BO). We studied the control system developed by INAIL consisting in acquiring EMG signals from amputee subjects and using pattern recognition methods for the classifcation of acquired signals, associating them with specifc gestures and consequently commanding the prosthesis. Our work consisted in improving classifcation methods used in the learning phase. In particular, we proposed a classifer based on a neural network as a valid alternative to the INAIL one-versus-all approach to multiclass classifcation.
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KURAMOTO, RENATO Y. R. "Desenvolvimento de uma metodologia baseada no modelo de duas-regiões e em técnicas de análise de ruído microscópico para a medida absoluta dos parâmetros cinéticos Betasub(eff), Lambda e Betasub(eff/Lambda do reator IPEN/MB-01." reponame:Repositório Institucional do IPEN, 2007. http://repositorio.ipen.br:8080/xmlui/handle/123456789/11547.

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Made available in DSpace on 2014-10-09T12:53:07Z (GMT). No. of bitstreams: 0
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Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)
Tese (Doutoramento)
IPEN/T
Instituto de Pesquisas Energeticas e Nucleares - IPEN/CNEN-SP
FAPESP:03/01261-0
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Frank, Florian. "Effiziente Methoden zur netzwerkbasierten Modellbeschreibung für die EMV-Simulation im Automobilbereich /." Tönning ; Lübeck Marburg : Der Andere Verl, 2008. http://d-nb.info/990427889/04.

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25

Liu, Jingfang. "Adaptive iterative filtering methods for nonlinear signal analysis and applications." Diss., Georgia Institute of Technology, 2013. http://hdl.handle.net/1853/52169.

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Time-frequency analysis for non-linear and non-stationary signals is extraordinarily challenging. To capture the changes in these types of signals, it is necessary for the analysis methods to be local, adaptive and stable. In recent years, decomposition based analysis methods were developed by different researchers to deal with non-linear and non-stationary signals. These methods share the feature that a signal is decomposed into finite number of components on which the time-frequency analysis can be applied. Differences lie in the strategies to extract these components: by iteration or by optimization. However, considering the requirements of being local, adaptive and stable, neither of these decompositions are perfectly satisfactory. Motivated to find a local, adaptive and stable decomposition of a signal, this thesis presents Adaptive Local Iterative Filtering (ALIF) algorithm. The adaptivity is obtained having the filter lengths being determined by the signal itself. The locality is ensured by the filter we designed based on a PDE model. The stability of this algorithm is shown and the convergence is proved. Moreover, we also propose a local definition for the instantaneous frequency in order to achieve a completely local analysis for non-linear and non-stationary signals. Examples show that this decomposition really helps in both simulated data analysis and real world application.
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林依民 and Yi-min Lin. "Application of time-frequency method in venous air embolism detection and in the study of EMG fasciculation." Thesis, The University of Hong Kong (Pokfulam, Hong Kong), 1993. http://hub.hku.hk/bib/B3123379X.

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Lin, Yi-min. "Application of time-frequency method in venous air embolism detection and in the study of EMG fasciculation /." [Hong Kong : University of Hong Kong], 1993. http://sunzi.lib.hku.hk/hkuto/record.jsp?B13883859.

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28

Mei, Fang. "COATING OF SILVER FILM ONTO THE INNER PORE SURFACES OF THE RETICULATED ALUMINA BY AN ELECTROLESS PLATING METHOD." University of Cincinnati / OhioLINK, 2000. http://rave.ohiolink.edu/etdc/view?acc_num=ucin971276657.

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29

Gärskog, Gustav. "NUMERICAL CALCULATION METHOD FOR MAGNETIC FIELDS IN THE VICINITY OF CURRENT-CARRYING CONDUCTORS." Thesis, Uppsala universitet, Elektricitetslära, 2018. http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-353338.

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This thesis aims to develop a calculation method to determine themagnetic field magnitudes in the vicinity of power lines, i.e. bothburied cables and overhead lines. This is done through the numericaluse of Biot Savart's law where the conductors are approximated by aseries of straight segment elements that each contribute to the overallfield strength at the field point. The method is compared to two realcases and to the exact integral solution. Also, a review of some of theresearch material regarding electromagnetic fields from power lines andclaims of adverse health effects due to these fields is conducted.Results show that the numerical error is dependent on the segmentationdegree of the conductors and the mathematical model is inaccurate closeto the conductor. The calculations show slightly higher fieldmagnitudes than the previous survey done by WSP (Williams SalePartnership) far away from the source and slightly lower at the centerconductor. This may be due to the excluded induction in the shieldwires and differences in actual conductor coordinates.
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Schmidt, Martin [Verfasser]. "Methoden zur Messdatenverarbeitung und Erhöhung der Sensitivität für EMV-Nahfeldmessungen / Martin Schmidt." München : Verlag Dr. Hut, 2018. http://d-nb.info/1153253704/34.

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31

Benedetti, Andrea. "A new method for continuous quality control of nsm cfrp systems." Master's thesis, Alma Mater Studiorum - Università di Bologna, 2014. http://amslaurea.unibo.it/6835/.

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In the last decade the near-surface mounted (NSM) strengthening technique using carbon fibre reinforced polymers (CFRP) has been increasingly used to improve the load carrying capacity of concrete members. Compared to externally bonded reinforcement (EBR), the NSM system presents considerable advantages. This technique consists in the insertion of carbon fibre reinforced polymer laminate strips into pre-cut slits opened in the concrete cover of the elements to be strengthened. CFRP reinforcement is bonded to concrete with an appropriate groove filler, typically epoxy adhesive or cement grout. Up to now, research efforts have been mainly focused on several structural aspects, such as: bond behaviour, flexural and/or shear strengthening effectiveness, and energy dissipation capacity of beam-column joints. In such research works, as well as in field applications, the most widespread adhesives that are used to bond reinforcements to concrete are epoxy resins. It is largely accepted that the performance of the whole application of NSM systems strongly depends on the mechanical properties of the epoxy resins, for which proper curing conditions must be assured. Therefore, the existence of non-destructive methods that allow monitoring the curing process of epoxy resins in the NSM CFRP system is desirable, in view of obtaining continuous information that can provide indication in regard to the effectiveness of curing and the expectable bond behaviour of CFRP/adhesive/concrete systems. The experimental research was developed at the Laboratory of the Structural Division of the Civil Engineering Department of the University of Minho in Guimar\~aes, Portugal (LEST). The main objective was to develop and propose a new method for continuous quality control of the curing of epoxy resins applied in NSM CFRP strengthening systems. This objective is pursued through the adaptation of an existing technique, termed EMM-ARM (Elasticity Modulus Monitoring through Ambient Response Method) that has been developed for monitoring the early stiffness evolution of cement-based materials. The experimental program was composed of two parts: (i) direct pull-out tests on concrete specimens strengthened with NSM CFRP laminate strips were conducted to assess the evolution of bond behaviour between CFRP and concrete since early ages; and, (ii) EMM-ARM tests were carried out for monitoring the progressive stiffness development of the structural adhesive used in CFRP applications. In order to verify the capability of the proposed method for evaluating the elastic modulus of the epoxy, static E-Modulus was determined through tension tests. The results of the two series of tests were then combined and compared to evaluate the possibility of implementation of a new method for the continuous monitoring and quality control of NSM CFRP applications.
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Kimn, Edward Sun. "A parametric finite element analysis study of a lab-scale electromagnetic launcher." Thesis, Georgia Institute of Technology, 2011. http://hdl.handle.net/1853/39498.

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The purpose of the study is to better understand the factors that affect melt-wear in the armature-to-rail contact interface of an electromagnetic launcher (EML). In order to investigate the factors, the study uses finite element analysis (FEA) to vary parameters of a lab-scale EML at the Georgia Institute of Technology. FEA is used due to the complex nature of the system, which includes the geometry and various engineering aspects that the EML incorporates. The study focuses on an uncoupled analysis of the structural, electromagnetic (EMAG), thermal, and modal aspects. The reason for the uncoupled analysis was because the system was complex and there were computational limits. Also, by uncoupling the analysis fields, the way the parameters affected melt-wear could be viewed separately. The study varied the geometry of the armature, the stiffness of the rail system (compliance layer), and the material of the armature. The structural analysis was for the initial contact of the rail to the armature and found the von Mises stresses, contact area, and contact pressure. The EMAG analysis found the Lorentz forces in the system based on a current curve used in the lab-scale EML. The thermal analysis consisted of friction heating and Joule heating. The modal analysis was for the unstressed and pre-stressed armature. Based on the study conducted, it was found that aluminum would provide the best speeds due to its lighter mass, but lacked in the thermal resistance area. Tungsten provided the better thermal resistance, but lacked in the potential speed due to its heavier mass.
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Myers, Roberta Jo. "Attitudes and Beliefs of Registered Nurses about the Process of Changing to an Electronic Medical Record in a Community Hospital: A Mixed Method Investigation." Otterbein University / OhioLINK, 2014. http://rave.ohiolink.edu/etdc/view?acc_num=otbn1399663173.

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34

Weber, Stefan-Peter. "Effizienter Entwurf von EMV-Filtern für leistungselektronische Geräte unter Anwendung der Methode der partiellen Elemente." [S.l.] : [s.n.], 2007. http://opus.kobv.de/tuberlin/volltexte/2007/1625.

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35

Celik, Ertugrul. "Integrating EMS into SCM : A Case Study of Methods, Benefits and Barriers at Sandvik Tooling." Thesis, Högskolan i Gävle, Avdelningen för Industriell utveckling, IT och Samhällsbyggnad, 2011. http://urn.kb.se/resolve?urn=urn:nbn:se:hig:diva-21299.

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Purpose – The aim of this research is to explore the benefits and barriers of integrating EMS to SCM in Sandvik Tooling. While exploring that, it is intended to gain insights into the methods employed to integrate the systems and find out the type of integration used in practice. Design/methodology/approach – Explorative case study method is employed in this research paper. Primary data is obtained through semi-structured interviews and observations. Triangulation, respondent validation, peer review are the principal strategies employed to ensure validity and reliability of this study. Findings – Sandvik Tooling employed a composite view of integration in which verbal and documented forms of information exchanged together with novel solutions to provide integration throughout supply chain on the basis of common goals and vision, shared values and resources. Integration is provided with a balanced mixture of interactions and collaborations. Benefits of integration are categorized as environmental, economic, and organizational benefits. On the other side, barriers are presented as internal and external barriers. Practical Implications – This research paper has significant practical contributions to businesses with presenting the ways to integrate and analyze these two systems and demonstrate barriers to overcome and benefits to take advantage of. Originality/value – Environmental management systems and supply chain management topics received considerable interest among researchers in recent decades. However there is a lack of research about how these two systems can be integrated and what kind of integration will best define this integration type. Analyzing barriers and benefits of integration process will also advance and contribute our knowledge in this research area.
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Huss, Joar. "Optimizing the slag system for phosphorus removal in a DRI-based EAF-process using the dictionary attack method." Thesis, KTH, Materialvetenskap, 2018. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-229743.

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Abstract Carbon emissions pose a serious threat to the continued survival of this planet. All sectors of society must, therefore, lower their emissions, this includes the steel industry. The production of steel is based on iron ore reduction by carbon. In an attempt to relieve the steel industry from its inherent fossil dependence an initiative called HYBRIT has been started. It aims to supplant carbon reduction with hydrogen reduction. Currently, there is no economically viable industrial production of steel that uses fossil-free hydrogen as reduction agent. In order to create economic viability for such a process work has to be conducted to innovate and optimize. This study aims to be a part of that optimization process by creating a tool for optimizing the slag system with regards to phosphorus removal. 26843 slag compositions were evaluated using modules written in “Matlab” combined with “Thermo-Calc”. 1583 possible slag compositions were found to be suitable for phosphorus removal. These compositions were then optimized after slag weight in order to minimize slag associated cost. The compositions were tested against two theoretical raw materials with varying initial phosphorus content 250 ppm and 125 ppm. It was found that the initial phosphorus concentration of the raw material has a substantial impact not only on the slag costs but also the slag praxis that should be used.
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Dugas, Alain R. J. "A three-dimensional FEM method to predict current densities induced in conducting objects exposed to ELF magnetic fields." Thesis, University of Ottawa (Canada), 1993. http://hdl.handle.net/10393/6721.

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This thesis studies a numerical method to predict the current densities induced in conducting objects exposed to Extremely Low Frequency (ELF) magnetic fields. The Three Dimensional Finite Element Method (3-D FEM) was chosen to accomplish this task. The 3-D FEM numerical formulation is derived and presented as is the resulting algorithm written in FORTRAN code. The results are then presented and compared to other verified solutions to verify the validity of the formulation and the code. These results show that the 3-D FEM formulation works well for very simple objects. But, due to the fact that the developed algorithm requires much computer memory and that the governing coupled equations to solve produce matrices which are not always well conditioned, complex objects cannot yet be analyzed using this method.
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Värnqvist, Peter. "Reflexiv kontroll : evig metod som systematiserats?" Thesis, Försvarshögskolan, 2016. http://urn.kb.se/resolve?urn=urn:nbn:se:fhs:diva-6329.

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The desire to influence ones opponent without using violence, has probably existed in all times. Reflexive control is a method used historically without the user knowing about the concept, but through research during the 1900s, theories from psychology, behavioral science and cybernetics entered into the military application of modern influence operations. Reflexive control builds upon the fact that a stimulated organism responds with a reflex. Which, in the context of the essay, means that a controller transfers prepared information to a partner or a counterpart to bring him to single-handedly take one of the controller intended decision. This is expressed either by methods used intuitively by an intelligent user or systematically by a controller with knowledge and resources, creating a situation which voluntarily brings or forces the other part to make decisions as the controller wants for its own use. The methods are based on knowledge of the other part's self-image. A self-image that can be individual, for example, a president, or a group, such as a state leadership. The reflex may contain of a decision or of an action that are not well considered but that benefits the controller. The controller then exploits the new situation created by its preparations that may have been on going for a long time. The essay describes some of the methods that has been used by the Soviet Union and later integrated into the Russian warfare. The essay askes the questions; Can Bismarck's actions in 1870 and Russia's actions in the Georgia conflict in 2008 be explained by the theory of reflexive control? Is there a difference? If it is - how is the difference expressed? Yes, both cases reflect reflexive control. The differences between them are explained by the evolution from intuitive actions into systematic use.
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Yang, Qingsong. "MODEL-BASED AND DATA DRIVEN FAULT DIAGNOSIS METHODS WITH APPLICATIONS TO PROCESS MONITORING." Case Western Reserve University School of Graduate Studies / OhioLINK, 2004. http://rave.ohiolink.edu/etdc/view?acc_num=case1080246972.

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40

Jungkunz, Werner. "EMG-Biofeedback als Methode zur Muskelfunktionsdiagnostik in der neuro-orthopädischen Rehabilitation : retrospektive Analyse aus dem klinischen Alltag /." Erlangen, 2008. http://opac.nebis.ch/cgi-bin/showAbstract.pl?sys=000253120.

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41

Kuramoto, Renato Yoichi Ribeiro. "Desenvolvimento de uma metodologia baseada no modelo de Duas-Regiões e em técnicas de análise de ruído microscópico para a medida absoluta dos parâmetros cinéticos βeff, Λ e βeff/Λ do reator IPEN/MB-01." Universidade de São Paulo, 2007. http://www.teses.usp.br/teses/disponiveis/85/85133/tde-29032012-133723/.

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Uma nova metodologia para a medida absoluta da fração efetiva de nêutrons atrasados βeff, baseada em técnicas de análise de ruído microscópico e no modelo de Duas- Regiões, foi desenvolvida no reator IPEN/MB-01. Diferentemente das demais técnicas, tais como o Método de Bennet Modificado, o Método do Número de Nelson e o Método da fonte de 252Cf, a principal vantagem da metodologia proposta é a obtenção de βeff de um modo puramente experimental, sem a necessidade de quaisquer outros parâmetros, sejam estes calculados ou provenientes de outros experimentos. Com a finalidade de validar este novo método, uma série de experimentos Rossi-α e Feynman-α foram realizados no reator IPEN/MB-01. De acordo com a metodologia proposta, βeff foi estimado com uma incerteza de 0.67%, a qual atende aos requisitos de precisão almejados. Além disso, o tempo de geração de nêutrons prontos , dentre outros parâmetros, também foi obtido experimentalmente via esta metodologia. Em geral, os parâmetros medidos estão em acordo com resultados provenientes de experimentos de análise de ruído macroscópico. Nas comparações teoria-experimento, os valores de βeff medidos neste trabalho mostram que a biblioteca JENDL3.3 apresenta a melhor performance (dentro de 1%). Esta concordância justifica a redução no yield de fissão do 235U proposta por Sakurai e Okajima.
A new method for absolute measurement of the effective delayed neutron fraction, βeff , based on microscopic noise experiments and the Two-Region Model was developed at the IPEN/MB-01 Research Reactor facility. In contrast with other techniques like the Modified Bennet Method, Nelson-Number Method and 252Cf-Source Method, the main advantage of this new methodology is to obtain the effective delayed neutron parameters in a purely experimental way, eliminating all parameters that are difficult to measure or calculate. In this way, Rossi-α and Feynman-α experiments for validation of this method were performed at the IPEN/MB-01 facility, and adopting the present approach, βeff was measured with a 0.67% uncertainty. In addition, the prompt neutron generation time, , and other parameters were also obtained in an absolute experimental way. In general, the final results agree well with values from frequency analysis experiments. The theory-experiment comparison reveals that JENDL-3.3 shows deviation for βeff lower than 1% which meets the desired accuracy for the theoretical determination of this parameter. This work supports the reduction of the 235U thermal yield as proposed by Okajima and Sakurai.
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42

Schmidt, Martin [Verfasser], and Manfred [Gutachter] Albach. "Methoden zur Messdatenverarbeitung und Erhöhung der Sensitivität für EMV-Nahfeldmessungen / Martin Schmidt ; Gutachter: Manfred Albach." Erlangen : Friedrich-Alexander-Universität Erlangen-Nürnberg (FAU), 2018. http://d-nb.info/1152438263/34.

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43

Curto, Millet Fabien. "Inflation expectations, labour markets and EMU." Thesis, University of Oxford, 2007. http://ora.ox.ac.uk/objects/uuid:9187d2eb-2f93-4a5a-a7d6-0fb6556079bb.

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This thesis examines the measurement, applications and properties of consumer inflation expectations in the context of eight European Union countries: France, Germany, the UK, Spain, Italy, Belgium, the Netherlands and Sweden. The data proceed mainly from the European Commission's Consumer Survey and are qualitative in nature, therefore requiring quantification prior to use. This study first seeks to determine the optimal quantification methodology among a set of approaches spanning three traditions, associated with Carlson-Parkin (1975), Pesaran (1984) and Seitz (1988). The success of a quantification methodology is assessed on the basis of its ability to match quantitative expectations data and on its behaviour in an important economic application, namely the modelling of wages for our sample countries. The wage equation developed here draws on the theoretical background of the staggered contracts and the wage bargaining literature, and controls carefully for inflation expectations and institutional variables. The Carlson-Parkin variation proposed in Curto Millet (2004) was found to be the most satisfactory. This being established, the wage equations are used to test the hypothesis that the advent of EMU generated an increase in labour market flexibility, which would be reflected in structural breaks. The hypothesis is essentially rejected. Finally, the properties of inflation expectations and perceptions themselves are examined, especially in the context of EMU. Both the rational expectations and rational perceptions hypotheses are rejected. Popular expectations mechanisms, such as the "rule-of-thumb" model or Akerlof et al.'s (2000) "near-rationality hypothesis" are similarly unsupported. On the other hand, evidence is found for the transmission of expert forecasts to consumer expectations in the case of the UK, as in Carroll's (2003) model. The distribution of consumer expectations and perceptions is also considered, showing a tendency for gradual (as in Mankiw and Reis, 2002) but non-rational adjustment. Expectations formation is further shown to have important qualitative features.
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44

Michel, Vincent Valentin. "The effect of cultural control methods on tomato bacterial wilt caused by Pseudomonas solanacearum (E.F. Smith) in Southeast Asia /." Zürich, 1997. http://e-collection.ethbib.ethz.ch/show?type=diss&nr=11926.

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45

Leung, Woon Ching Jane. "Language problems experienced by S.4 students during the change from CMI to EMI in a secondary school in Hong Kong." HKBU Institutional Repository, 2003. http://repository.hkbu.edu.hk/etd_ra/490.

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46

Hansen, Matthew Martin Kenneth. "Optimization of Conformal Joints in Axial Tension." The Ohio State University, 2012. http://rave.ohiolink.edu/etdc/view?acc_num=osu1355847865.

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47

Cortesi, Matteo <1980&gt. "Effetti idrodinamici prodotti dal costume tecnico sul nuotatore." Doctoral thesis, Alma Mater Studiorum - Università di Bologna, 2012. http://amsdottorato.unibo.it/4869/.

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L’introduzione dei costumi tecnici nel nuoto ha portato miglioramenti senza precedenti sulla prestazione. I miglioramenti nella velocità di nuoto sono stati attribuiti dalla letteratura a riduzioni nelle resistenze idrodinamiche sul nuotatore. Tuttavia, gli effetti specifici dovuti all’utilizzo di questo tipo di costume non sono ancora completamente chiariti. Questa tesi aveva l’obiettivo di indagare gli effetti del costume tecnico sul galleggiamento statico, sulla posizione del corpo e sulla resistenza idrodinamica in avanzamento passivo. Nello studio preliminare sono stati misurati la spinta idrostatica, i volumi polmonari dinamici e la circonferenza toracica di 9 nuotatori che indossavano un costume tradizionale o un costume tecnico in gomma sintetica. Indossare il costume tecnico ha determinato una riduzione significativa del galleggiamento statico, e la compressione toracica causata da questo tipo di costume potrebbe avere una relazione con la significativa riduzione dei volumi polmonari misurati quando il nuotatore indossa questo tipo di costume. Un successiva analisi prevedeva il traino passivo di 14 nuotatori che mantenevano la miglior posizione idrodinamica di scivolamento indossando un costume tradizionale, tecnico in tessuto e tecnico in gomma. La posizione del corpo in avanzamento è stata misurata con un’analisi cinematica. La resistenza passiva indossando i costumi tecnici è risultata significativamente minore per entrambi i costumi tecnici rispetto alla prova con costume tradizionale. L’analisi condotta attraverso modelli di regressione lineari ha mostrato che una parte della riduzione della resistenza passiva era legata a proprietà intrinseche dei costumi tecnici. Tuttavia, anche l’area di impatto frontale determinata dall’inclinazione del tronco del soggetto in scivolamento e l’inclinazione degli arti inferiori hanno mostrato una marcata influenza sulla resistenza idrodinamica passiva. Pertanto, la riduzione di resistenza idrodinamica durante lo scivolamento passivo effettuato con costume tecnico da nuoto è attribuibile, oltre all’effetto del materiale di composizione del costume, ad una variazione della posizione del corpo del nuotatore.
The introduction of technical bodysuits have abruptly improved the swimming performance. In the literature, the improvements in swimming speed are attributed to the reduction of the hydrodynamic resistance acting on the swimmer. However, the specific effects due to wearing this kind of bodysuit are not yet completely clear. The aims of this thesis were to investigate the effects of wearing the technical bodysuits on the static buoyancy, on the body position, and on the passive drag. In a preliminary study the hydrostatic lift, the dynamic lung volumes and chest circumference were measure in 9 swimmers while wearing a traditional swimsuit or a bodysuit made of synthetic rubber. The technical bodysuit reduced significantly the static buoyancy. The chest compression produced by this bodysuit may have a relationship with the significant reduction in lung volumes measured when the swimmer wore the technical bodysuit. In a following analysis, 14 swimmers were passively towed in the best hydrodynamic position of gliding. The protocol was randomly repeated using a traditional swimsuit, a textile bodysuit, and a rubber bodysuit. The body position during gliding was measured with kinematic analysis. The passive drag was significantly lower in the trials with both the examined technical bodysuits, than in those performed using the traditional swimsuit. The analysis performed using linear regression models showed that a fraction in the drag reduction was due to the intrinsic properties of the technical swimsuit. However, also the frontal impact area determined by the trunk incline of the subject in gliding had a marked influence on passive drag, present in all the swimsuit conditions. Therefore, in addition to the low resistance due to the fabric of the swimsuit, the passive drag reduction of the swimmer when wearing a technical bodysuit is explainable by a change in the body position of the swimmer.
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Milani, Melissa Angela <1963&gt. "L'educazione fisica e lo sport quali strumenti d'inclusione sociale e scolastica, per giovani disabili e studenti B.E.S." Doctoral thesis, Alma Mater Studiorum - Università di Bologna, 2016. http://amsdottorato.unibo.it/7422/.

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Il progetto è in sintonia con i nuovi scenari di ricerca, sia in ambito nazionale che internazionale, per l’inclusione e l’attiva partecipazione all’interno della società delle persone con disabilità e delle loro famiglie. Sebbene le molte problematiche ancora da superare, negli ultimi anni il tema dell’inclusione (scolastica e sociale) delle persone che presentano delle disabilità sta’ attraendo l'attenzione di settori sempre più ampi di popolazione, quanto guadagnando sempre più spazio all'interno dei momenti di discussione circa le future politiche sociali. La ricerca analizza gli stakeholder primari e secondari responsabili dei processi di inclusione sociale e scolastica dei giovani disabili, supponendo, lo sport e l’educazione fisica quale strumento facilitatore di possibili azioni e cambiamenti volti a facilitare la vita delle persone disabili. L'adozione di questo approccio è presentato come denominatore comune di pratiche innovative sociali che a supporto dei processi inclusivi consentono il passaggio da un modello medico assistenziale a un approccio dei diritti civili alla disabilità. La base teorica di questa ipotesi trova sostegno in molti principi di Integrazione Scolastica e l'obiettivo principale delle ipotesi di ricerca è sulla partecipazione ed emancipazione come strategie volte ad affrontare i problemi esistenti relativi alla inclusione. Le esperienze studiate rappresentano esempi di promozione dell’inclusione nei sistemi scolastici : contribuendo al dibattito sull’ “inclusive education”, sostenendo processi di inclusione sociale rivolti a tutti coloro che si trovano in situazione di svantaggio psico-fisico e sensoriale. Nella seconda parte l’analisi di alcuni studi in materia di approcci partecipativi nelle aree di interesse come esempio del miglioramento dell'inclusione, attraverso il coinvolgimento degli stakeholder dell’inclusione. Proseguendo nella ricerca si tenta di indagare sul livello di pregiudizio dei giovani all’interno di ambienti scolastici e sportivi, partendo da questioni ancora aperte.
The project is in tune with the new research scenarios, both nationally and internationally, for the inclusion and active participation in society of people with disabilities and their families. Although many problems still to be overcome, in recent years the issue of inclusion (educational and social) of people with disabilities is' attracting the attention of increasingly broad sectors of the population, since gaining more and more space inside opportunities for discussion about future social policies. The research analyzes the primary and secondary stakeholders responsible for the processes of social inclusion and education of young people with disabilities, assuming, sport and physical education as a facilitator instrument of possible actions and changes aimed at making life easier for disabled people. The adoption of this approach is presented as a common denominator of social innovative practices in support of inclusive processes allow the transition from a welfare approach to a medical model of civil rights to disability. The theoretical basis of this hypothesis finds support in many principles of Scholastic Integration and the main objective of the research hypothesis is on participation and empowerment as strategies to address existing problems relating to inclusion. The experiences studied are examples of inclusion promotion in school systems: contributing to the debate on ' "inclusive education", supporting processes of social inclusion aimed at all those who are in a state of psycho-physical and sensory handicap. In the second part of the analysis of several studies in the field of participatory approaches in the areas of interest as an example of improving the inclusion, through the involvement of stakeholder inclusion. Continuing research will try to investigate the level of injury for young people within school and sporting circles, starting from open questions.
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Baldini, Marta <1980&gt. "Influenza della dieta e differenti tipologie di attività fisica sul peso, composizione corporea e prestazioni fisiche in donne sovrappeso." Doctoral thesis, Alma Mater Studiorum - Università di Bologna, 2007. http://amsdottorato.unibo.it/130/.

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50

Lobietti, Roberto <1965&gt. "Il muro nella pallavolo: modello biomeccanico ed esercizi speciali." Doctoral thesis, Alma Mater Studiorum - Università di Bologna, 2007. http://amsdottorato.unibo.it/132/.

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