Dissertations / Theses: 'Diagnostic parameters'

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Konala, Bhaskar Chandra. "Effect of Arterial Wall-Stenosis Compliance on Coronary Diagnostic Parameters." University of Cincinnati / OhioLINK, 2010. http://rave.ohiolink.edu/etdc/view?acc_num=ucin1291146768.

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Bencalík, Karol. "Diagnostika hydraulických soustav letadel." Doctoral thesis, Vysoké učení technické v Brně. Fakulta strojního inženýrství, 2014. http://www.nusl.cz/ntk/nusl-234202.

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In aviation, great emphasis is placed on aircraft safety. The current technical condition of the aircraft and its systems is an important parameter for its airworthiness. The technical condition of the elements measured during the flight should be compared to parameters specified by the manufacturer and measured in laboratory conditions. This thesis deal with the possibilities of the use of dimensionless numbers for the diagnostics of the hydrogenerator and deals with the diagnostics possibilities of selected elements.

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Lu, Ying 1968. "Bayesian estimation of diagnostic test parameters in the presence of verification bias." Thesis, McGill University, 2006. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=98755.

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The statistical evaluation of diagnostic tests may be affected by several potential biases. These biases include those caused by a study design that results in a non-representative sub-sample who are further verified by the reference test (verification bias), and those caused by the absence of a definitive diagnostic test (gold standard test) for many diseases and conditions. In practice, an imperfect reference test is often assumed to be a perfect gold standard, potentially resulting in a large bias. Both Bayesian and frequentist methods have been proposed to adjust for each of these biases independently. To our knowledge, there is no Bayesian solution for that adjusts for both of these biases simultaneously. The objective of this thesis is to present a Bayesian method for the evaluation of diagnostic tests when both of these potential biases may be operating simultaneously. We develop a likelihood function that models both sources of bias, and suggest convenient prior distributions that simplify deriving posterior distributions. The models are based on dichotomous test results and the parameters of interest are estimated using a Gibbs sampler. Using both simulated and real data examples, we demonstrate that the method presented here can correct the verification bias even when a perfect gold standard test does not exist.

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Peelukhana, Srikara Vishwanath. "Effect of coronary collateral flow on diagnostic parameters: An In vitro study." University of Cincinnati / OhioLINK, 2009. http://rave.ohiolink.edu/etdc/view?acc_num=ucin1258473630.

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Goswami, Ishan. "Influence of geometric and flow variations on coronary diagnostic parameters: An in-vitro study." University of Cincinnati / OhioLINK, 2013. http://rave.ohiolink.edu/etdc/view?acc_num=ucin1367937429.

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Nedanovska, E. N. "Thomson scattering from technological plasmas." Thesis, Queen's University Belfast, 2013. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.580125.

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Zanten, Anton Pieter van. "Central nervous system metastases from extracranial malignancies diagnostic value of clinical chemical parameters /." Amsterdam : Maastricht : Rodopi ; University Library, Maastricht University [Host], 1986. http://arno.unimaas.nl/show.cgi?fid=5309.

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Subramony, Anantha Krishna. "Efficacy of New Diagnostic Parameters for Determining Arteriovenous Fistula Functionality: A Numerical Study." University of Cincinnati / OhioLINK, 2016. http://rave.ohiolink.edu/etdc/view?acc_num=ucin1470753788.

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Gomez, Carrillo Andrea. "Low Frequency Oscillations of Hemodynamic Parameters as a Novel Diagnostic Measure for Traumatic Brain Injury." Wright State University / OhioLINK, 2021. http://rave.ohiolink.edu/etdc/view?acc_num=wright1627226821857103.

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Lienhardt, Stephanie Barbara. "Diagnostic criteria and follow-up parameters in Complex Regional Pain Syndrome type I : a Delphi survey /." [S.l.] : [s.n.], 2009. http://opac.nebis.ch/cgi-bin/showAbstract.pl?sys=000281140.

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Lança, Luís Jorge Oliveira Carrasco. "Radiological imaging in digital systems: the effect of exposure parameters in diagnostic quality and patient dose." Doctoral thesis, Universidade de Aveiro, 2011. http://hdl.handle.net/10773/3950.

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Doutoramento em Tecnologias da Saúde
Esta tese pretende contribuir para o estudo e análise dos factores relacionados com as técnicas de aquisição de imagens radiológicas digitais, a qualidade diagnóstica e a gestão da dose de radiação em sistema de radiologia digital. A metodologia encontra-se organizada em duas componentes. A componente observacional, baseada num desenho do estudo de natureza retrospectiva e transversal. Os dados recolhidos a partir de sistemas CR e DR permitiram a avaliação dos parâmetros técnicos de exposição utilizados em radiologia digital, a avaliação da dose absorvida e o índice de exposição no detector. No contexto desta classificação metodológica (retrospectiva e transversal), também foi possível desenvolver estudos da qualidade diagnóstica em sistemas digitais: estudos de observadores a partir de imagens arquivadas no sistema PACS. A componente experimental da tese baseou-se na realização de experiências em fantomas para avaliar a relação entre dose e qualidade de imagem. As experiências efectuadas permitiram caracterizar as propriedades físicas dos sistemas de radiologia digital, através da manipulação das variáveis relacionadas com os parâmetros de exposição e a avaliação da influência destas na dose e na qualidade da imagem. Utilizando um fantoma contrastedetalhe, fantomas antropomórficos e um fantoma de osso animal, foi possível objectivar medidas de quantificação da qualidade diagnóstica e medidas de detectabilidade de objectos. Da investigação efectuada, foi possível salientar algumas conclusões. As medidas quantitativas referentes à performance dos detectores são a base do processo de optimização, permitindo a medição e a determinação dos parâmetros físicos dos sistemas de radiologia digital. Os parâmetros de exposição utilizados na prática clínica mostram que a prática não está em conformidade com o referencial Europeu. Verifica-se a necessidade de avaliar, melhorar e implementar um padrão de referência para o processo de optimização, através de novos referenciais de boa prática ajustados aos sistemas digitais. Os parâmetros de exposição influenciam a dose no paciente, mas a percepção da qualidade de imagem digital não parece afectada com a variação da exposição. Os estudos que se realizaram envolvendo tanto imagens de fantomas como imagens de pacientes mostram que a sobreexposição é um risco potencial em radiologia digital. A avaliação da qualidade diagnóstica das imagens mostrou que com a variação da exposição não se observou degradação substancial da qualidade das imagens quando a redução de dose é efectuada. Propõe-se o estudo e a implementação de novos níveis de referência de diagnóstico ajustados aos sistemas de radiologia digital. Como contributo da tese, é proposto um modelo (STDI) para a optimização de sistemas de radiologia digital.
In the present study an attempt has been made to contribute for the analysis of the factors related with the technical acquisition, the quality of the diagnostic image and dose management in digital detector systems for projection radiography. The thesis methodology is organized in two components. The observational component is based on a retrospective and transversal design. The data collected from CR and DR systems allowed the evaluation of exposure parameters from digital images, absorbed dose and exposure index to the detector. Under this classification (retrospective and transversal design) it was also possible to develop diagnostic quality evaluations from digital radiographic images: observer performance studies from digital images stored in the PACS. Under the experimental component of this thesis several experiments using phantoms were performed in order to evaluate the relation between dose and image quality. The experiments allowed the characterization of physical properties of digital image systems and manipulation of variables such as those related to exposure parameters and evaluation of its influence in dose and image quality. Using a contrast-detail phantom, anthropomorphic phantoms and an animal bone phantom it was possible to provide objective measures concerning the quantification of diagnostic quality and measures of object detectability. According to the research undertaken several conclusions could be highlighted. Quantitative measures of DR and CR detectors performance provide a basis for optimization, allowing to measure and determinate the physical properties of digital radiology image systems. Exposure parameters being used in digital radiography shows that current routine radiographic practice does not comply with European guidelines concerning exposure techniques. There is a need to evaluate, improve and establish a baseline reference aiming exposure optimization and provide new guidelines for current digital systems. Exposure parameters influence patient dose in digital radiology but image quality perception seems not to be affected with exposure variation. Studies performed both with phantoms and patients showed that overexposure is a potential risk when working with digital systems. Evaluation of diagnostic quality of digital images when a variation of exposure parameters is provided showed no substantial decrease in image quality when dose reduction is achieved. New dose reference levels should be studied and implemented according to the digital system characteristics and performance. A conceptual framework (STDI) is proposed as an attempt to provide a practical method to optimize digital radiology systems.
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Rajabi, Jaghargh Ehsan. "Effects of hemodynamic stresses on the remodeling parameters in arteriovenous fistula." University of Cincinnati / OhioLINK, 2015. http://rave.ohiolink.edu/etdc/view?acc_num=ucin1427962400.

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Dyachuk, Eduard. "Load diagnostic of power lines to control and optimize the utilization of wind energy." Thesis, Mälardalens högskola, Akademin för hållbar samhälls- och teknikutveckling, 2010. http://urn.kb.se/resolve?urn=urn:nbn:se:mdh:diva-10090.

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Bai, Xueshi. "Laser-induced plasma as a function of the laser parameters and the ambient gas." Thesis, Lyon 1, 2014. http://www.theses.fr/2014LYO10333/document.

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La technique laser-induced breakdown spectroscopy (LIBS), qui consiste à exploiter le spectre du plasma induit par laser sur la surface de l'échantillon pour déterminer sa composition élémentaire, a été inventée il y a plus de 50 ans. Récemment, elle connaît un développement rapide, poussée par des besoins d'application dans différents domaines, citons par exemple, exploration océanique, détection de pollution environnementale, ou contrôle de procédés industriels. Cette technique utilise le plasma généré par ablation laser comme la source spectroscopique. La particularité de LIBS est que le plasma induit par laser présente un comportement transitoire et une distribution spatiale qui ne soit pas uniforme en général. Bien que la détection résolue en temps puisse améliorer considérablement la performance de LIBS, surtout pour le procédé de LIBS autocalibration avec une meilleure détermination de température, l'évolution temporelle du plasma est souvent corrélée avec sa morphologie et son inhomogénéité spatiale. L'étude de la morphologie ainsi que la structure interne du plasma avec l'évolution pendant l'expansion de celui-ci dans un gaz ambiant, représente donc un point crucial pour l'optimisation du plasma entant qu'une source spectroscopique. Suite à la thèse de Qianli Ma réalisée dans notre équipe et soutenue en décembre 2012, qui a été notamment consacrée à l'étude de l'effet de la longueur d'onde du laser d'ablation sur les propriétés et l'évolution du plasma dans un gaz ambiant d'argon, la présente thèse s'intéresse aux effets des autres paramètres, la fluence du laser d'ablation, la durée de l'impulsion, et les différents gaz ambiants (argon ou air), sur la morphologie et la structure du plasma. Par ailleurs, les mécanismes microscopiques conduisant à l'onde de détonation soutenue par laser dans argon ou dans l'air sont aussi étudiés. Lors du refroidissant du plasma dans l'air, des oxydes métalliques peuvent se former. L'étude de la formation de molécules, au-delà de l'intérêt pratique pour la LIBS, fournit également un aperçu de la cinétique chimique dans le plasma, ce qui est intéressant pour l'étude de la transformation du plasma en phase gazeuse à une phase recondensée de nanoparticules
Laser-induced breakdown spectroscopy (LIBS) has been invented for more than 50 years, which analyzes the spectrum of the laser-induced plasma to determine the elemental composition of the ablated sample. Recently, LIBS technique has been well developed and applied in different domains, for example oceanic exploration, pollution monitoring in the environment. LIBS uses the ablation plasma as a light source that contains the elemental composition information of the sample. However, the laser-induced plasma exhibits a transient behavior. Although time-resolved and gated detection can greatly improve the performance of the LIBS technique especially that of calibration-free LIBS (CF-LIBS) with a better determination of plasma temperature, the temporal evolution of the plasma is correlated to its morphology and its spatial inhomogeneity. The determination of the morphology as well as the internal structure of the plasma together with their evolution during plasma expansion into the ambient gas is therefore crucial for the optimization of the use of ablation plasma as a spectroscopic emission source. Evolutions of the morphology and the internal structure of the ablation plasma are considered as the consequence of its hydrodynamic expansion into the ambient gas. Following the thesis of Qianli Ma which has studied the effect of laser wavelength on the behavior of the plasma induced in an ambient gas of argon, the present thesis has used the same diagnostic techniques (time- and space-resolved emission spectroscopy and fast spectroscopic images) together with 1064 nm ns laser pulse ablation of a target of aluminum to investigate the effects of other parameters, such as the fluence and the duration of laser pulse, the effect of different ambient gases (argon and air), on the morphology and internal structure of the plasma. Furthermore, in order to understand the effects of these parameters on the properties of the plasma, the microscopic mechanisms during post ablation and the propagation of the plasma are also studied. While the plasma cools down in air, molecules are formed, AlO for instance. So the thesis also studied the condition for the formation of the molecules in the plasma. Beyond the practical interest of this study for LIBS, it provides also insights to the kinetics of the AlO molecule formation in laserinduced plasma

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D, Souza Gavin A. "Influence of Serial Coronary Stenoses on Diagnostic Parameters: An In-vitro Study with Numerical Validation." University of Cincinnati / OhioLINK, 2014. http://rave.ohiolink.edu/etdc/view?acc_num=ucin1397234083.

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Kumar, Hemant. "Software analytical tool for assessing cardiac blood flow parameters /." View thesis, 2001. http://library.uws.edu.au/adt-NUWS/public/adt-NUWS20030724.122149/index.html.

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胡夕春 and Xichun Hu. "Study on the use of potential prognostic parameters in breast cancer patients." Thesis, The University of Hong Kong (Pokfulam, Hong Kong), 2001. http://hub.hku.hk/bib/B30158138.

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D, Souza Gavin A. "Evaluation of Pulmonary Artery Dysfunction in Congenital Heart Disease Patients using Functional-Anatomical Diagnostic Parameters and 4D MRI." University of Cincinnati / OhioLINK, 2018. http://rave.ohiolink.edu/etdc/view?acc_num=ucin1544692345671142.

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Pham, Dinh Anh Khoi [Verfasser]. "A new method in determination of electrical parameters for failure diagnostic applicable to power transformers / Dinh Anh Khoi Pham." Hannover : Technische Informationsbibliothek und Universitätsbibliothek Hannover (TIB), 2013. http://d-nb.info/1047413752/34.

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Oumri, Mohamed. "Diagnostic des défauts de réseaux électriques filaires par la réflectométrie." Thesis, Paris 11, 2014. http://www.theses.fr/2014PA112090/document.

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Cette thèse s’intéresse au diagnostic de défauts de réseaux électriques filaires à l'aide de la réflectométrie. Pour concevoir des algorithmes de diagnostic, nous avons étudié le problème direct (simulations numériques des réseaux électriques) et le problème inverse (détermination de certaines propriétés d’un réseau à partir des mesures de réflectométrie). Concernant le problème direct, nous avons développé une méthode de calcul du coefficient de réflexion d’un réseau sous forme d’arbre qui est basée sur la résolution successive d’équations différentielles de Riccati. Nous avons également généralisé l’équation de BLT pour des réseaux électriques composés de branches non uniformes et automatisé la méthode de sa résolution. La thèse a apporté deux nouveaux résultats concernant le problème inverse. Le premier résultat porte sur l’estimation des longueurs et des coefficients de pertes des branches d'un réseau électrique sous forme d’étoiles via une méthode itérative. Le deuxième porte sur l’identification, au moins partiellement, des matrices d’admittance des branches d’un réseau électrique modélisé par l’équation de BLT. Les méthodologies et les formalismes proposés dans la thèse sont validés soit par des simulations numériques, soit par des mesures réelles
This thesis focuses on fault diagnosis of wired electric networks using reflectometry. To develop diagnostic algorithms, we studied the direct problem (numerical simulations of electrical networks) and the inverse problem (determination of certain properties of a network from reflectometry measurements). For the direct problem, we developed a method for the computation of reflection coefficients. This method is based on the successive solving for a Riccati differential equation. We also generalized the BLT equation for the nonuniform electric networks and automated the resolution of this method. The thesis has made two new results concerning the inverse problem. The first result concerns the estimation of lengths and loss coefficients of the branches of a star network via an iterative method. The second focuses on the identification, at least partially, of the branches admittance matrices of a electric network modeled by the equation of BLT. The methodologies and formalisms proposed in this thesis are validated either by numerical simulations or by real measurements

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KrishnankuttyRema, Resmi. "Quantification and Analysis of the Geometric Parameters of the Total Cavo Pulmonary Connection Using a Skeletonization Approach." Thesis, Georgia Institute of Technology, 2007. http://hdl.handle.net/1853/19742.

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The Fontan repair is a three-stage palliative surgical procedure for single ventricle congenital heart diseases, ultimately resulting in the right heart bypass. This is accomplished by routing the systemic venous return directly to the lungs. Although this procedure reduces the mortality rate, its long-term outcome is still considered far from optimal. Over the years several modifications have been suggested, ultimately leading to the total cavopulmonary connection (TCPC), which is the current procedure of choice. A better understanding of the hemodynamics in the TCPC is critical for further optimization of the TCPC design and surgical planning, which may lead to improved surgical outcome. Recent experimental and numerical studies have focused on characterizing the fluid dynamics of the TCPC but to date no study has attempted to relate the geometry of the TCPC anatomies with their hemodynamic parameters. The present study therefore proposes to quantify the complex geometrical characteristics of patient-specific TCPC anatomies and correlate these characteristics with their hemodynamic efficiency. A technique using skeletonization approach is thus developed to achieve this goal. The centerline approximation of the TCPC geometry is used to extract main geometric parameters such as vessel area, curvature and offset. The developed methodology is then applied to characterize the shape of various TCPC templates including extra-cardiac (EC) and intra-atrial (IA) TCPCs, TCPCs with bilateral Superior Vena Cavae and geometries before the third stage. The obtained geometric parameters are then related to the TCPC hemodynamics, particularly to the power loss.

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Harasim, Tomáš. "Návrh diagnostické soustavy pro malý dopravní letoun." Master's thesis, Vysoké učení technické v Brně. Fakulta strojního inženýrství, 2015. http://www.nusl.cz/ntk/nusl-231664.

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Due to the airliners and aircraft operators pressure on reducing the operating costs, the diagnostic systems are included in aircraft, so that the wearness of single functional elements of other functional systems can be monitored. This monitoring can save money, that are usually spent on maintenance and especially, it leads to an increase of the overall safety of aircraft operations. The task of this work is to design a diagnostic system for small transport aircraft. For the right and proper design, is the correct understanding of the functions of each part on aircraft systems needed. The part of this work is attended to the selection procedure of appropriate diagnostic parameters, next section deals with the suitable options of their scanning. I do mention the summary of the chosen diagnostic parameters for the scanning and the recomended ways of their measuring.

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Pedrosa, Ana Rita Ponce Álvares de Águeda. "Cólicas em equinos: tratamento médico vs cirúrgico - critérios de decisão." Bachelor's thesis, Universidade Técnica de Lisboa. Faculdade de Medicina Veterinária, 2008. http://hdl.handle.net/10400.5/939.

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Dissertação de Mestrado Integrado em Medicina Veterinária
A cólica, ou dor abdominal aguda, é um sinal inespecífico que pode ter origem em disfunções do tracto gastrointestinal ou outras que não envolvam o mesmo, sendo neste caso denominada “falsa cólica”. A cólica é responsável pelo maior número de mortes em equinos, à excepção de morte por idade avançada. A etiologia das doenças do tracto gastrointestinal dos equinos que levam à cólica é complexa e diversa. Ainda por explicar permanecem alguns deslocamentos intestinais ou torções e impactações. Na prática clínica diária a maioria dos casos de cólica tem causa desconhecida, mas em geral, resultam da distensão do intestino por ingesta, gás, fluidos ou devido a uma interrupção da motilidade normal do intestino (Íleo). Os casos mais severos podem também resultar de danos da parede intestinal por processos de isquémia, inflamação, edema ou enfarte. No diagnóstico desta afecção existem vários parâmetros que devem ser avaliados, tais como: grau de dor; distensão abdominal; frequência cardíaca, respiratória e características do pulso; coloração das membranas mucosas; tempo de repleção capilar; temperatura rectal; motilidade gastrointestinal; refluxo gástrico; achados à palpação rectal; hematócrito; concentração plasmática de proteínas totais; concentração plasmática de fibrinogénio; contagem de leucócitos; quantificação electrolítica; análise de gases sanguíneos; quantificação das enzimas séricas; concentração de lactato plasmático; características do fluido peritoneal recolhido por abdominocentése; achados ecográficos; achados radiográficos; achados à endoscopia; achados à laparoscopia; e análise fecal. O objectivo deste trabalho consistiu no estabelecimento de pontos orientadores na difícil decisão da terapêutica a adoptar na cólica equina, analisando os vários parâmetros de diagnóstico que, conjuntamente, permitem alcançar um diagnóstico mais preciso da afecção em causa e como tal, poder tomar-se uma decisão mais acertada quanto ao tratamento a seguir, seja ele médico ou cirúrgico. No estudo efectuado sobre 13 casos de cólica abdominal, verificou-se que os casos cirúrgicos foram acompanhados de uma dor mais violenta, e apresentaram frequências cardíacas e tempos de repleção capilar superiores aos dos pacientes que necessitaram apenas de tratamento médico, enquanto que a concentração plasmática de proteínas totais foi superior nos casos médicos. Dos resultados do estudo efectuado e de outros estudos já previamente existentes concluiu-se que quando existe um grau de dor severa, achados anormais à palpação rectal e ausência de resposta à terapêutica analgésica, deve-se referenciar o paciente para cirurgia, mesmo que a frequência cardíaca, coloração das membranas mucosas, tempo de repleção capilar, e análise do fluido peritoneal estejam dentro dos valores normais.
ABSTRACT The colic, or acute abdominal pain, is a non specific sign which can be originated by several disorders of the gastrointestinal tract or others that do not regard this last one, in which case the colic is named “false colic”. The true colic is responsible for the majority of deaths in horses, except those cases in which horses die due to advanced aging. The aetiology of the disorders of the gastrointestinal tract that lead to equine colic is complex and diverse. Still, with no explanation remain some gut displacements or twists and impactions. In the practical daily clinic the majority of colic cases have an unknown cause, but in general, they are a result of gut distention by ingesta, gas, fluids or due to an interruption of the normal motility (Íleus). The most severe cases can also result from damages of the intestinal wall by processes of isquemia, inflammation, edema or infarction. In the diagnosis of this pathology there are several parameters that must be evaluated, such as: pain degree; abdominal distention; the respiratory, heart and pulse rate; mucous membranes; membrane refill time; rectal temperature; gastrointestinal motility; gastric reflux; findings in rectal examination; packed cell volume; total plasma protein value; plasma fibrinogen value; white blood cell count; electrolytic quantification; analysis of blood gases; quantification of serum enzymes; plasma lactate value; characteristics of the peritoneal fluid collected by abdominal paracentesis; ultrasonographic findings; radiographic findings; endoscopic findings; laparoscopic findings; and fecal analysis. The goal of this work consisted on the establishment of guiding points in the difficult decision of the appropriate treatment, analyzing some parameters of diagnosis that, jointly, supply tracks to reach a more specific diagnosis of the disorder which is causing the abdominal pain, and as such to be able to make the right decision regarding the necessary treatment, being either surgical or medical. The study, which was carried on 13 cases of abdominal colic, has shown that surgical cases had a more violent pain, and had presented a higher heart rate and membrane refill time than the patients who only needed medical treatment, whereas the total plasma protein value was higher in medical cases. From these results and other previously existing studies, one can conclude that when exists a severe degree of pain, abnormal findings in the rectal examination and absence of response to the analgesic therapy, the colic case must be referred for surgery, even thought there are no significant changes in the heart rate, mucous membrane, membrane refill time and in the analysis of the peritoneal fluid.

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Alexander, George W. A. "Determination of parameters related to the output of diagnostic X-ray sets by calculations based on the results of direct measurement of the spectral output." Thesis, University of Ulster, 1993. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.357790.

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Pinto, Ferreira Philippe Daniel [Verfasser], and Andrés [Akademischer Betreuer] Kecskeméthy. "Development of Functional Numerical Scores for Improving the Diagnostic of Motion Impairment of Stroke Patients using Non-Traditional Gait Parameters / Philippe Daniel Pinto Ferreira ; Betreuer: Andrés Kecskeméthy." Duisburg, 2017. http://d-nb.info/1132510627/34.

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Holušová, Kateřina. "Standardizace a harmonizace znalecké metodiky pro potřeby Forenzní ekotechniky: les a dřeviny." Doctoral thesis, Vysoké učení technické v Brně. Ústav soudního inženýrství, 2012. http://www.nusl.cz/ntk/nusl-234301.

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In the presented thesis is an overview of the current state solved the problem, specifying the inclusion of Forensic Ecotechnique: forest and trees into the forensic sciences in the world and its description as part of special methods of forensic engineering. The results focus on the design of standardized and harmonized processes according to the type of expert opinions. As another of the key results of the work are designed functional biometric parameters for evaluating trees in the functional diagnosis of Methods of contact flora assessment (“CFA”). Application of some methods of measurement and selected functional biometric parameters are listed in the examples in the measurement of selected forest stands of beech in the National Nature Reserve Voděradské bučiny and in Chřiby hills. As a general supplement usable in Forensic ecotechnique: forest and trees are given the limits for functional diagnostics. In another series of work includes a discussion on the proposed standards and the measurement results. The work is concluded by summarizing the results and the benefits.

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Špatenka, Jan. "Palubní počítač s testovací jednotkou pro osobní automobily." Master's thesis, Vysoké učení technické v Brně. Fakulta elektrotechniky a komunikačních technologií, 2012. http://www.nusl.cz/ntk/nusl-219838.

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This thesis deals with the design and implementation of on-board computer unit with testing for cars. The first part focuses on circuit design concepts. Measurement data acquisition module uses standard OBD2. The module is designed based on the measuring circuit STN1110. Measuring module equipped with USB and JTAG communicates with the nearby devices. The control module is equipped with ARM microcontroller. The second part deals with the implementation of software for the microcontroller and the PC application. Finally, test results of the on-board computer implemented are presented.

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Цыплакова, Е. С., and E. S. Tsyplakova. "Исследование профессионального мышления студентов-психологов : магистерская диссертация." Master's thesis, б. и, 2021. http://hdl.handle.net/10995/100001.

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Объектом исследования является профессиональное мышление студентов-психологов. Предметом исследования являлись предикторы развития диагностического мышления. Магистерская диссертация состоит из введения, трех глав, заключения, списка литературы (61 источник) и приложения, включающего в себя результаты методик (в баллах) и содержание теста. Объем магистерской диссертации 94 страниц, на которых размещены 1 рисунок и 5 таблиц. Во введении раскрывается актуальность проблемы исследования, разработанность проблематики, ставятся цель и задачи исследования, определяются объект и предмет исследования, формулируются гипотезы, указываются методы и эмпирическая база, а также этапы проведения исследования, теоретическая и практическая значимость работы. Первая глава включает в себя обзор иностранной и отечественной литературы по теме исследования профессионального мышления психологов и студентов-психологов. Представлены разделы, раскрывающие структуру феномена, его параметры и механизмы. Выводы по первой главе представляют собой итоги по изучению теоретического материала. Вторая глава посвящена практической деятельности психолога. В ней выделяется психодиагностика, как главная практическая деятельность психолога. Рассматривается структура, механизмы и особенности написания диагностического заключения психологом. Определяются психолингвистические параметры для оценки итоговых заключений студентов. Раскрывать особенности интеллектуальных и личностных характеристик письменной речи психолога. Выводы по главе 2 включают в себя основные результаты. Третья глава посвящена эмпирической части исследования и включает в себя: описание организации и методов проведенного исследования и результатов, полученных по всем использованным методикам (16-факторный личностный опросник Р.Б.Кеттела, опросник «Уровень субъективного контроля» и профориентационный тест на определение склонности и интереса к профессии психолог). Также представлен корреляционный и сравнительный анализ результатов исследования. В заключении в обобщенном виде изложены результаты теоретической и эмпирической частей работы, а также выводы по выдвинутым гипотезам, обоснована практическая значимость исследования и описаны возможные перспективы дальнейшей разработки данной проблематики.
The object of the study is the professional thinking of psychology students. The subject of the study was predictors of the development of diagnostic thinking. The master's thesis consists of an introduction, three chapters, a conclusion, a list of references (61 sources) and an appendix that includes the results of the methods (in points) and the content of the test. The volume of the master's thesis is 94 pages, which contain 1 figure and 5 tables. The introduction reveals the relevance of the research problem, the development of the problem, sets the goal and objectives of the research, defines the object and subject of the research, formulates hypotheses, specifies methods and empirical base, as well as the stages of the research, the theoretical and practical significance of the work. The first chapter includes a review of foreign and domestic literature on the topic of research of professional thinking of psychologists and psychology students. The sections that reveal the structure of the phenomenon, its parameters and mechanisms are presented. The conclusions of the first chapter are the results of the study of the theoretical material. The second chapter is devoted to the practical work of a psychologist. It highlights psychodiagnostics as the main practical activity of a psychologist. The structure, mechanisms and features of writing a diagnostic conclusion by a psychologist are considered. Psycholinguistic parameters are determined for evaluating the final conclusions of students. To reveal the features of the intellectual and personal characteristics of the written speech of the psychologist. The conclusions of chapter 2 include the main results. The third chapter is devoted to the empirical part of the study and includes: a description of the organization and methods of the study and the results obtained by all the methods used (the 16-factor personal questionnaire of R. B. Kettel, the questionnaire "The level of subjective control" and the career guidance test to determine the propensity and interest in the profession of psychologist). A correlation and comparative analysis of the results of the study is also presented. In conclusion, the results of the theoretical and empirical parts of the work, as well as conclusions on the hypotheses put forward, are summarized, the practical significance of the study is justified and possible prospects for further development of this problem are described.

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Alamedine, Dima. "Selection of EHG parameter characteristics for the classification of uterine contractions." Thesis, Compiègne, 2015. http://www.theses.fr/2015COMP2201/document.

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Un des marqueurs biophysique le plus prometteur pour la détection des accouchements prématurés (AP) est l'activité électrique de l'utérus, enregistrée sur l’abdomen des femmes enceintes, l’électrohystérogramme (EHG). Plusieurs outils de traitement du signal (linéaires, non linéaires) ont déjà été utilisés pour l'analyse de l'excitabilité et de la propagation de l’EHG, afin de différencier les contractions de grossesse, qui sont inefficaces, des contractions efficaces d’accouchement, qui pourraient provoquer un AP. Dans ces études nombreuses, les paramètres sont calculés sur des bases de données de signaux différentes, obtenus avec des protocoles d'enregistrement différents. Il est donc difficile de comparer les résultats afin de choisir les «meilleurs» paramètres pour la détection de l’AP. En outre, ce grand nombre de paramètres augmente la complexité de calcul dans un but de diagnostic. Par conséquent, l'objectif principal de cette thèse est de tester, sur une population de femmes donnée, quels outils de traitement du signal EHG permettent une discrimination entre les deux types de contractions (grossesse/accouchement). Dans ce but plusieurs méthodes de sélection de paramètres sont testées afin de sélectionner les paramètres les plus discriminants. La première méthode, développée dans cette thèse, est basée sur la mesure de la distance entre les histogrammes des paramètres pour les différentes classes (grossesse et accouchement) en utilisant la méthode « Jeffrey divergence (JD)». Les autres sont des méthodes de fouille de données existantes issues de la littérature. Les EHG ont été enregistrés en utilisant un système multivoies posé sur l'abdomen de la femme enceinte, pour l'enregistrement simultané de 16 voies d'EHG. Une approche monovariée (caractérisation d’une seule voie) et bivariée (couplage entre deux voies) sont utilisées dans notre travail. Utiliser toutes les voies, analyse monovariée, ou toutes les combinaisons de voies, analyse bivariée, conduit à une grande dimension des paramètres. Par conséquent, un autre objectif de notre thèse est la sélection des voies, ou des combinaisons de voies, qui fournissent l'information la plus utile pour distinguer entre les contractions de grossesse et d’accouchement. Cette étape de sélection de voie est suivie par la sélection des paramètres, sur les voies ou les combinaisons de voies sélectionnées. De plus, nous avons développé cette approche en utilisant des signaux monopolaires et bipolaires.Les résultats de ce travail nous permettent de mettre en évidence, lors du traitement de l’EHG, les paramètres et les voies qui donnent la meilleure discrimination entre les contractions de grossesse et celles d’accouchement. Ces résultats pourront ensuite être utilisés pour la détection des menaces d’accouchement prématuré
One of the most promising biophysical markers of preterm labor is the electrical activity of the uterus, picked up on woman’s abdomen, the electrohysterogram (EHG). Several processing tools of the EHG signal (linear, nonlinear), allow the analysis of both excitability and propagation of the uterine electrical activity in order to differentiate between pregnancy contractions, which are ineffective, from labor effective contractions that might cause preterm birth. Therefore, on these multiple studies, the parameters being computed from different signal databases, obtained with different recording protocols, it is sometimes difficult to compare their results in order to choose the “best” parameter for preterm labor detection. Additionally, this large number of parameters increases the computational complexity for diagnostic purpose. Therefore, the main objective of this thesis is to select, among all the features of interest extracted from multiple studies, the most pertinent feature subsets in order to discriminate, on a given population, pregnancy and labor contractions. For this purpose, several methods for feature selection are tested. The first one, developed in this work, is based on the measurement of the Jeffrey divergence (JD) distance between the histograms of the parameters of the 2 classes, pregnancy and labor. The other are “Filter” and “Wrapper” Data Mining methods, extracted from the literature. In our work monovariate (in one given EHG channel) and bivariate analysis (propagation of EHG by measuring the coupling between channels) are used. The EHG signals are recorded using a multichannel system positioned on the woman’s abdomen for the simultaneous recording of 16 channels of EHG. Using all channels, for the monovariate, or all combinations of channels for the bivariate analysis, leads to a large dimension of parameters for each contraction. Therefore, another objective of our thesis is the selection of the best channels, for the monovariate, or best channel combinations, for the bivariate analysis, that provide the most useful information to discriminate between pregnancy and labor classes. This channel selection step is then followed by the feature selection for the channels or channel combinations selected. Additionally, we tested all our work using monopolar and bipolar signals.The results of this thesis permits us to evidence, when processing the EHG, which channels and features can be used with the best chance of success as inputs of a diagnosis system for discrimination between pregnancy and labor contractions. This could be further used for preterm labor diagnosis

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Al-Roubaie, Zahra. "Human breast images : segmentation, analysis and conversion to electrical parameter profiles for Semcad-X electromagnetic simulator." Thesis, McGill University, 2008. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=116044.

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Electrical parameter profiles of human breast images can be used to simulate and analyze the anticipated effects on tissue from its interaction with electromagnetic fields involved in the cancer treatment exposure. In part, the success of this approach depends on the accuracy and precision in identifying the different tissue types. In this work, we propose two methods of segmenting human breast images with malignant tumors. The first method of algorithmic partitioning of the image involves manual color-edge contouring of the tissues using a cursor and subsequent identification of the tissue types. For the second method, MRI T1 values and thresholds are used to perform segmentation and we investigate the potential of incorporating edge detection. The first method is effective, while the second lacks precision, but eliminates the need of manual contouring. The images are imported as BMP files into SEMCAD, an electromagnetic simulation tool based on finite-difference time-domain method, which recognizes the grouped tissues and creates a model of the image. The model allows the user to easily assign electrical parameter values to the grouped tissues, according to the measured values reported in the literature.

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Al-Ballaa, Hind Rasheed. "Diagnosis via Qualitative parameter estimation." Thesis, University of Aberdeen, 2008. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.493495.

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This thesis presents an approach for qualitative model based fault diagnosis via parameter estimation. Estimating parameters qualitatively in this research is based on the relationships among involved qualitative quantities. To maintain the consistency of ordinal relationships an inequality reasoner is developed. Existing inequality reasoners (or commonly in the AI community referred to as quantity lattices) infer relationships between quantities involved in a system (qualitative or quantitative) based on the real values associated with them. The novel feature of our inequality reasoner is that it infers and maintains relationships among pure qualitative quantities. Inferring ordinal relationships between sign based quantities removes the traditional drawback of qualitative domain, the lack of discriminating power.

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Benešl, Lukáš. "Vliv fyzických parametrů a stáří silnoproudého vedení na výkonnost a spolehlivost PLC/BPL." Master's thesis, Vysoké učení technické v Brně. Fakulta elektrotechniky a komunikačních technologií, 2020. http://www.nusl.cz/ntk/nusl-413002.

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BPL technology is quite widespread nowadays and the public is also somewhat aware of it. This technology can be used as a means of communication without the need to install additional media and thus use the existing infrastructure. In an effort to use the full potential of the technology, BPL communication began to be used to monitor the current state of cables in distribution networks online. Where the technology is already fully implemented, the distributor can use the data to evaluate the current situation. In this way, BPL technology can be used as a diagnostic tool to test the quality of a cable connection on which not only time but also humidity and other external influences could have a significant effect.

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Goitom, Asfaha Daniel. "Fundamental Studies on Direct Injection Nebulisers for Sample Introduction in ICP Spectrometry : Aerosol Properties, ICP Characteristics and Analytical Performance." Doctoral thesis, Umeå University, Chemistry, 2006. http://urn.kb.se/resolve?urn=urn:nbn:se:umu:diva-671.

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The performance of different types of nebulisers: Vulkan direct injection nebuliser (Vulkan DIN), direct injection high efficiency nebuliser (DIHEN), microconcentric nebuliser coupled to cyclonic or double pass spray chamber (MCN-C or MCN-DP, respectively) was investigated and compared when used for sample introduction to ICP-MS or ICP-OES. With ICP-OES, in axial viewing mode, intensity distributions across the radius of the plasma (radial intensity profiles) were determined for different spectral lines with Esum 1.85-15.41 eV to determine fundamental plasma properties for various matrices using Vulkan DIN and MCN-C. The results showed that with the MCN-C the ionisation temperature (Tion) was about the same across the measured region of the plasma (±3.0 mm) whereas with the Vulkan DIN the Tion was significantly lower in the centre of the plasma. A large deviation from local thermodynamic equilibrium, as well as deteriorated stability, was observed for the plasma when using the Vulkan DIN.

With ICP-MS noise power spectra (NPS) were generated to identify sources of noise. NPS showed that the magnitude of white noise for the tested sample introduction systems decreased in the following order: Vulkan DIN > DIHEN > MCN-C > MCN-DP. This order follows the decrease of mean droplet size and span of the size distribution, indicating that the white noise is caused by spatial and temporal non-uniform desolvation and ionisation. Another source of noise arose from the peristaltic pump and the magnitude of pump interference noise decreased in the following order: DIHEN > MCN-C/DP > Vulkan DIN. Mains power interference noise and 1/f noise were lower for the direct injection nebulisers compared to the spray chamber systems. The contribution or effects of these noise components on relative standard deviations of steady-state ion-count rate and isotope ratio measurements is discussed in this thesis.

Aerosols generated by the Vulkan DIN and the DIHEN were also directly characterised using Particle Dynamic Analysis. The Vulkan DIN produced particles with a mean diameter of ~30 µm and a size distribution between 2-80 µm. With the DIHEN the corresponding values were ~11 µm and 1-40 µm, respectively, with a few particles at 55-78 µm. The mean velocity of particles from the Vulkan DIN was ~10 m s-1 and from the DIHEN ~18 m s-1. The lower velocity allows longer residence time counteracting the effects of the larger droplet size.

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Lange, Yvonne. "Serologische Parameter in der Diagnostik der Post-ERCP-Pankreatitis." Doctoral thesis, Universitätsbibliothek Leipzig, 2011. http://nbn-resolving.de/urn:nbn:de:bsz:15-qucosa-64686.

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Silva, Leopoldo Magacho dos Santos. "Avaliação de parametros estruturais no diagnostico do glaucoma." [s.n.], 2004. http://repositorio.unicamp.br/jspui/handle/REPOSIP/310035.

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Orientadores: Vital Paulino Costa, Ana Maria Marcondes
Tese (doutorado) - Universidade Estadual de Campinas, Faculdade de Ciencias Medicas
Made available in DSpace on 2018-08-04T01:23:28Z (GMT). No. of bitstreams: 1 Silva_LeopoldoMagachodosSantos_D.pdf: 1066525 bytes, checksum: d1d302bd6421f23d5f4e474e23049056 (MD5) Previous issue date: 2004
Resumo: Objetivo: Avaliar a Sensibilidade e Especificidade de parâmetros estruturais (topografia de disco óptico e análise da camada de fibras nervosas da retina) no diagnóstico do glaucoma. Métodos: Pacientes com glaucoma primário de ângulo aberto foram selecionados do ambulatório de glaucoma da Unicamp. Indivíduos normais foram recrutados junto a voluntários dentro da equipe médica, amigos e parentes dos pacientes. Os participantes, após aprovação do Comitê de Ética da instituição, foram submetidos a exame oftalmológico completo, campimetria computadorizada (Humphrey Full Threshold, programa 24-2), topografia de disco óptico com o TOPSS e análise da camada de fibras nervosas da retina por meio da polarimetria de varredura a laser (GDx, versão 1.0.12). Curvas ROC foram criadas para se estabelecer novos pontos de corte para cada parâmetro individual de ambos os instrumentos. Em seguida, a análise de regressão multivariada foi empregada com parâmetros da topografia de disco óptico e polarimetria de varredura a laser separados e em conjunto para obter uma melhor relação sensibilidade/especificidade (Se/Es) no diagnóstico do glaucoma. Resultados: Cento e doze indivíduos com glaucoma e 88 normais foram incluídos. Os parâmetros individuais da polarimetria de varredura a laser com melhor capacidade em diferenciar olhos normais de glaucomatosos foram: The Number (Se: 79,5%, Es: 81,8%, área abaixo da curva ROC - aROC: 0,870), Maximum Modulation (Se: 83,0%, Es: 76,1%, aROC: 0,842) e Ellipse Modulation (Se: 65,2%, Es: 88,6%, aROC: 0,831), enquanto Average Disc Diameter (Se: 64%, Sp: 89%, aROC: 0.824), Total Disc Area (Se: 85%, Sp: 66%, aROC: 0.802) e Cup Area (Se: 69%, Sp: 85%, aROC: 0.797) foram os melhores parâmetros individuais da topografia de disco óptico. Entretanto, a análise discriminante apresentou melhores resultados que os parâmetros individuais, tanto para a polarimetria de varredura a laser (Se: 87,5%, Es: 86,4%, aROC: 0,900), topografia de disco óptico (Se: 90%, Sp: 81%, aROC: 0,910), quanto para a combinação de parâmetros derivados de ambos os instrumentos (Se: 93%, Es: 91%, aROC: 0,970). Conclusão: Parâmetros estruturais, avaliados pela topografia de disco óptico e pela polarimetria de varredura a laser apresentam boa capacidade na diferenciação entre olhos normais e glaucomatosos. Entretanto, os melhores resultados são obtidos ao combiná-los em uma função linear discriminante com parâmetros derivados de ambos os instrumentos
Abstract: Purpose: To test the ability of structural parameters (as measured by the Scanning Laser Polarimetry and Confocal Scanning Laser Ophthalmoscopy) to discriminate between normal and glaucomatous eyes. Methods: After approval of the Ethics Committee of the University of Campinas, primary open-angle glaucoma patients were selected from the glaucoma service. Normal individuals were recruited from volunteers among the medical staff, university members, family and friends of patients. All individuals underwent a thorough ophthalmic evaluation, a 24-2 full threshold Humphrey visual field, Scanning Laser Polarimetry with the GDx and Confocal Scanning Laser Ophthalmoscopy with the TOPSS. Cut-off points were selected and ROC curves were created for each individual Confocal Scanning Laser Ophthalmoscopy and Scanning Laser Polarimetry parameters. Finally, multivariate discriminant formulas were developed in order to achieve a better sensitivity (Se)/specificity (Sp) ratio for the diagnosis of glaucoma, initially separately for each device, and then combining parameters from Confocal Scanning Laser Ophthalmoscopy and Scanning Laser Polarimetry. Results: One-hundred and twelve patients with primary open-angle glaucoma and 88 normal individuals were enrolled in the study. The best Scanning Laser Polarimetry parameters in differentiating normal individuals from glaucoma patients were: The Number (Se: 79,5%, Es: 81,8%, area under the ROC curve- aROC: 0,870), Maximum Modulation (Se: 83,0%, Es: 76,1%, aROC: 0,842) and Ellipse Modulation (Se: 65,2%, Es: 88,6%, aROC: 0,831), while the best Confocal Scanning Laser Ophthalmoscopy individual parameters were: Average Disc Diameter (Se: 64%, Sp: 89%, aROC: 0,824), Total Disc Area (Se: 85%, Sp: 66%, aROC: 0,802) and Cup Area (Se: 69%, Sp: 85%, aROC: 0,797). However, the multivariate analysis resulted in better results for the Scanning Laser Polarimetry (Se: 87,5%, Es: 86,4%, aROC: 0,900), Confocal Scanning Laser Ophthalmoscopy (Se: 90%, Sp: 81%, aROC: 0,910), and for the combination of parameters from both devices (Se: 93%, Es: 91%, aROC: 0,970). Conclusion: Structural parameters, as measured by the Confocal Scanning Laser Ophthalmoscopy and Scanning Laser Polarimetry have good ability to differentiate normal individuals from glaucoma patients. However, better results are obtained combining parameters from both devices in a multivariate discriminant formula
Doutorado
Oftalmologia
Doutor em Ciências Médicas

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Thuillier, Philippe. "Optimisation des paramètres de quantification en imagerie TEP pour le diagnostic, l'évaluation thérapeuthique et le pronostic des cancers endocriniens Malignancy rate of focal thyroid incidentaloma detected by FDG PET–CT: results of a prospective cohort study, in Endocrine Connections 6(6), 2017 Diagnostic Value of FDG PET-CT Quantitative Parameters and Deauville-Like 5 Point-Scale in Predicting Malignancy of Focal Thyroid Incidentaloma, in Frontiers in Medicine 6(24), February 2019." Thesis, Brest, 2019. http://www.theses.fr/2019BRES0088.

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L’objectif de ce travail de thèse était de proposer une approche systématique et raisonnée des outils de quantification disponibles en routine clinique et du domaine de la recherche dans la prise en charge des patients atteints d’une tumeur endocrine. Nos résultats font état des limites des paramètres semi-quantitatifs pour faire le diagnostic de malignité d’un ITf fixant au 18FDG-TEP/TDM. Nos données sur l’intérêt des paramètres de textures dans le diagnostic de malignité des tumeurs surrénaliennes nous montrent des performances excellentes de ces indices mais qui n’apparaissent cependant pas supérieures en comparaison des paramètres semi-quantitatifs conventionnels. Notre approche soulève de nouvelles hypothèses quant à l’intérêt de l’analyse de texture dans la caractérisation de certaines tumeurs surrénaliennes rares (phéochromocytomes et corticosurrenalomes) qui devront faire l’objet de futurs travaux. Enfin, notre travail sur l’approche multi-paramétrique en imagerie 68Ga-DOTATOC-TEP/TDM met en évidence la faisabilité d’une acquisition dynamique corps entier en 68Ga-DOTATOC-TEP/TDM et les possibilités de quantification de la fixation tumorale des TNE traitées par RIV sur les acquisitions TEMP/TDM post-thérapeutiques. Nos résultats ouvrent des perspectives multiples quant à la prise en charge des TNE à différents étapes de la maladie (diagnostique, pronostique et évaluation thérapeutique)
The objective of this work was to propose a systematic and reasoned approach of the quantification tools available in clinical routine and in research in the management of patients with endocrine tumors. Our results report the limitations of semi-quantitative parameters to assess the malignancy of fTI detected by 18FDG-PET / CT. Our data on the interest of textural parameters in the diagnosis of malignancy of adrenal tumors show excellent performances of these indices. However these indices do not appear superior in comparison with conventional semi-quantitative parameters.Our approach raises new hypotheses regarding the interest of texture analysis in the characterization of some rare adrenal tumors (pheochromocytomas and adrenocortical carcinoma) that will be the subject of future work. Finally, our work on the multi-parametric 68Ga-DOTATOC-PET / CT imaging highlights the feasibility of a whole-body dynamic 68Ga-DOTATOC-PET / CT acquisition and the possibilities to perform quantification of NETs uptake treated with PRRT on post-therapeutic SPECT / CT acquisitions. Our results open up multiple perspectives for the management of NETs at different stages of the disease (diagnosis, prognosis and therapeutic evaluation)

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Sandink, Christopher Albert. "Screening diagnostics for parameter selection in extended Kalman filter implementations." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 2000. http://www.collectionscanada.ca/obj/s4/f2/dsk1/tape3/PQDD_0006/MQ45297.pdf.

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許自豪 and Chi-ho Geo Hui. "New laboratory parameters in the diagnosis of iron-restricted erythropoiesis." Thesis, The University of Hong Kong (Pokfulam, Hong Kong), 2008. http://hub.hku.hk/bib/B40722089.

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Hui, Chi-ho Geo. "New laboratory parameters in the diagnosis of iron-restricted erythropoiesis." Click to view the E-thesis via HKUTO, 2008. http://sunzi.lib.hku.hk/hkuto/record/B40722089.

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Ratushna, Vladyslava G. "Incorporation of Physico-Chemical Parameters Into Design of Microarray Experiments." Thesis, Virginia Tech, 2005. http://hdl.handle.net/10919/32989.

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Microarrays containing long oligonucleotides provide sensitive and specific detection of gene expression and are becoming a popular experimental platform. In the process of designing an oligonucleotide microarray for Brucella, we optimized the overall design of the array and created probes to distinguish among the known Brucella species. A 3-way genome comparison identified a set of genes which occur uniquely in only one or two of the sequenced Brucella genomes. Reverse transcriptase PCR assays of over one hundred unique and pairwise-differential regions identified in Brucella revealed several groups of genes that are transcribed in vivo with potential significance for virulence. The structural and thermodynamic properties of a set of 70mer oligonucleotide probes for a combined B. abortus, B. melitensis and B. suis microarray were modeled to help perform quantitative interpretation of the microarray data. Prediction and thermodynamic analysis of secondary structure formation in a genome-wide set of transcripts from Brucella suis 1330 demonstrated that properties of the target molecule have the potential to strongly influence the rate and extent of hybridization between transcript and an oligonucleotide probe in a microarray experiment. Despite relatively high hybridization temperatures used in the modeling process, parts of the target molecules are predicted to be inaccessible to intermolecular hybridization due to the formation of stable intramolecular secondary structure. Features in the Brucella genomes with potential diagnostic use were identified, and the extent to which target secondary structure, a molecular property which is not considered in the array design process, may influence the quality of results was characterized.
Master of Science

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Guo, Fei. "MULTI-PARAMETER PHYSIOLOGICAL TRACKING SYSTEM FOR DIAGNOSIS OF SEPSIS." Case Western Reserve University School of Graduate Studies / OhioLINK, 2021. http://rave.ohiolink.edu/etdc/view?acc_num=case1613129350013438.

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Schreier, Jan. "Vliv parametrů vazebného média a struktury povrchu na kvalitu snímaného signálu akustické emise." Master's thesis, Vysoké učení technické v Brně. Fakulta strojního inženýrství, 2012. http://www.nusl.cz/ntk/nusl-230124.

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This master’s thesis deals with the influence of different AE sensor couplants and surface roughness on the selected acoustic emission parameters. There are compared the amplitude of the signal measured using five different couplants at 20°C and 80°C. To monitor the effect of surface roughness on the AE parameters simple measuring product was constructed. Its functionality has been verified by implementation of basic experimental measurements.

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Browne, R. Edwin. "An evaluation of 'Coast Down Time' as a diagnostic parameter for condition monitoring." Thesis, Glasgow Caledonian University, 2008. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.486489.

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The behaviour of rotating machinery during deceleration when the power of the drive to the rotating machinery is stopped is known as Coast Down Phenomenon (CDP). The total time elapsed for the entire momentum due to sustained operation of the rotating machinery to dissipate is known as Coast Down Time (CDT). The characteristic profile of CDT (CDT-P) depends on inertia forces of the machinery components, tribological behaviour and environmental effects such as fluid drag. The aim of the research is to investigate the potential and the feasibiJity of using CDT as an effective tool for condition monitoring of machinery. A review of current literature has given a clear understanding to what extent the CDP has been explored with respect to utilising it as a diagnostic parameter. However no evidence for effective use of CDT in condition based monitoring programmes can be found. The main focus of this research is concentrated on ascertaining the validity of Coast Down Time as one of the condition monitoring parameters for a horizontal rotor system. Extensive experimental analysis is conducted on a rotor system consisting of a journal bearing using different lubricants under various mechanical and operating conditions An empirical formula is developed to determine the Coast Down Factor (CDF). Furthermore, the effect of rub on the motor has been studied with the aid of an electromagnetic clutch and isolating the rotor from the drive system. This research has shown a novel way to interpret the CDT-P to be used as a diagnostic parameter in condition monitoring by the formulation of Coast Down Factor. CDF gives a simple, but highly flexible tool for CDT analysis. COT monitoring through the trend of CDF can be used to analyse the performance of a journal bearing under given tribological conditions; to utilise as a tool for optimisation of selection of lubrication oil; to evaluate and understand. the tribological behaviour of lubrication and the performance of a journal bearing under different oil pressures; and to diagnose the mechanical degradation with simulated unbalance to the rotor system.

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Lemaréchal, Jean-Didier. "Estimation des propriétés dynamiques des réseaux cérébraux à large échelle par modèles de masse neurale de potentiels évoqués cortico-corticaux Comparison of two integration methods for dynamic causal modeling of electrophysiological data. NeuroImage An atlas of neural parameters based on dynamic causal modeling of cortico-cortical evoked potentials." Thesis, Université Grenoble Alpes, 2020. http://www.theses.fr/2020GRALS007.

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Ce travail de thèse porte sur la modélisation des potentiels évoqués cortico-corticaux (PECCs) induits par stimulation électrique intracérébrale lors de procédures de chirurgie de l’épilepsie en stéréo-électroencéphalographie. Nous utilisons pour cela des modèles de masse neurale de type modèles causaux dynamiques (Dynamic causal modeling, DCM).Dans un premier temps, nous démontrons l'importance d'utiliser une technique d'intégration précise pour résoudre le système d'équations différentielles formalisant la dynamique du modèle (Lemaréchal et al., 2018), en particulier pour une estimation précise des paramètres neuronaux du modèle.Dans une seconde étude, nous développons cette méthodologie pour l'appliquer aux PECCs de la base de données du projet F-TRACT. Les délais et les vitesses de propagation axonale entre régions cérébrales ainsi que les constantes de temps synaptiques locales sont estimés et projetés sur des parcellisations corticales validées par la communauté internationale en neuroimagerie. Le nombre important de jeux de données utilisés dans cette étude (>300) permet en particulier de mettre en évidence des différences de propriétés dynamiques de connectivité en fonction de l'âge des populations considérées (Lemaréchal et al., soumis).Enfin, le dernier travail montre comment, dans le contexte Bayésien de DCM, un atlas de connectivité peut servir à améliorer la spécification et l'estimation d'un modèle de masse neurale pour l’explication de données électrophysiologiques de surface de type électroencéphalographique ou magnétoencéphalographique, en fournissant des distributions a priori sur ses paramètres de connectivité.Dans l'ensemble, cette thèse propose de nouvelles estimations des propriétés dynamiques des interactions cortico-corticales. Grâce à la publication et à la mise à disposition de nouveaux atlas regroupant ces propriétés neuronales, les résultats générés peuvent dès à présent servir à une meilleure spécification et une estimation plus précise de modèles neuronaux de cerveau entier
This thesis work aims at modeling cortico-cortical evoked potentials (CCEPs) induced by intracortical direct electrical stimulation in epileptic patients being recorded with stereo-electroencephalography during epilepsy surgery. Neural mass models implemented within the dynamic causal modeling (DCM) framework are used for this purpose.We first demonstrate the importance of using an accurate integration scheme to solve the system of differential equations governing the global dynamics of the model, in particular to obtain precise estimates of the neuronal parameters of the model (Lemaréchal et al., 2018).In a second study, this methodology is applied to a large dataset from the F-TRACT project. The axonal conduction delays and speeds between brain regions, as well as the local synaptic time constants are estimated and their spatial mapping is obtained based on validated cortical parcellation schemes. Interestingly, the large amount of data included in this study allow to highlight brain dynamics differences between the young and the older populations (Lemaréchal et al., submitted).Finally, in the Bayesian context of DCM, we show that an atlas of connectivity can improve the specification and the estimation of a neural mass model, for electroencephalographic and magnetoencephalographic studies, by providing a priori distributions on the connectivity parameters of the model.To sum up, this work provides novel insights on dynamical properties of cortico-cortical interactions. The publication of our results in the form of an atlas of neuronal properties already provides an effective tool for a better specification of whole brain neuronal models

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Schostak, Martin Jürgen Wolfgang [Verfasser]. "Neue Parameter in der molekularen Diagnostik des Prostatakarzinoms / Martin Jürgen Wolfgang Schostak." Berlin : Medizinische Fakultät Charité - Universitätsmedizin Berlin, 2007. http://d-nb.info/1022577883/34.

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Chamuleau, Steven Anton Jozef. "Intracoronary derived physiological parameters for clinical decision-making in patients with multi-vessel coronary artery disease." [S.l. : Amsterdam : s.n.] ; Universiteit van Amsterdam [Host], 2001. http://dare.uva.nl/document/85068.

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Ali, Ali Alawi. "Real time fault diagnosis using observer and physical parameter estimation." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 1997. http://www.collectionscanada.ca/obj/s4/f2/dsk2/ftp01/MQ29966.pdf.

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Poshtan, Javad. "A geometric alignment approach to parameter-estimation-based fault diagnosis." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 1997. http://www.collectionscanada.ca/obj/s4/f2/dsk2/ftp02/NQ29470.pdf.

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Chen, Xiaoming. "The development of a parameter estimation tool towards fault diagnosis." The Ohio State University, 1997. http://rave.ohiolink.edu/etdc/view?acc_num=osu1399563299.

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Feng, Ming-Fa. "Fault diagnosis and prediction in reciprocating air compressors by quantifying operating parameters." Diss., Virginia Tech, 1992. http://hdl.handle.net/10919/39786.

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This research introduces a new method of diagnosing the internal condition of a reciprocating air compressor. Using only measured load torques and shaft dynamics, pressures, temperatures, flow rates, leakages, and heat transfer conditions are quantified to within 5%. The load torque acting on the rotor of the machine is shown to be a function of the dynamics (instantaneous position, velocity, and acceleration) of the driving shaft, the kinematic construction, and the internal condition of the machine. If the load torque, the kinematic construction of the machine, and the dynamics of the rotor are known, then the condition of the machine can be assessed. A theoretical model is developed to describe the physical behavior of the slider-crank mechanism and the shaft system. Solution techniques, which are based on the machine construction, crankshaft dynamics, and load torque measurements, are presented to determine the machine parameters. A personal computer based system used to measure the quantities necessary to solve for the machine parameters and the quantities used to compare with calculations is also documented. The solution algorithm for multi-stage compressors is verified by decoupling the load torque contributed by each cylinder. Pressure data for a four-stage two-cylinder high pressure air compressor (HPAC) is used. Also, the mathematical model is proven feasible by using measured angular velocity of the crankshaft and direct measurements of the load torque of a single stage, single cylinder air compressor to solve for the machine parameters. With this unintrusive and nondestructive method of quantifying the operating parameters, the cylinder pressures, operating temperatures, heat transfer conditions, leakage, and power consumption of a reciprocating air compressor can be evaluated.
Ph. D.

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Dissertations / Theses on the topic 'Diagnostic parameters'

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