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Miloševski, Jakub. "Systémové pojetí ocenění nemovitosti v Brně Židenicích." Master's thesis, Vysoké učení technické v Brně. Ústav soudního inženýrství, 2012. http://www.nusl.cz/ntk/nusl-232663.
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The aim of this master´s thesis is to evaluate the real value of the apartment building and to apply the attributes of the system approach for all operations associated with that particular evaluation. The thesis is mainly focused on the creation of the essential system parameters and the aplication of system methodology on solution of specific expert opinion. As a sample for aplication of system aproach for processing expert opinion was used real estate in Brno-Židenice, on which was used evaluation according to assignment.
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Kumpanová, Simona. "Aplikace systémového přístupu na ocenění nemovitosti s využitím porovnávací metody." Master's thesis, Vysoké učení technické v Brně. Ústav soudního inženýrství, 2014. http://www.nusl.cz/ntk/nusl-233041.
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This thesis deals with assessing market value of a particular real estate based on the analysis of a problematic situation. Simultaneously, the author defines and describes the necessary steps in the valuation process, the implementation of these steps, and their application to the given property valuation. The property valuation is based on the method of direct comparison of actual property with various properties in the database and on a comparison according to the law regulation for property valuation. At the same time, the characteristics of the regulation for property valuation were compared with the individual system of essential parameters created for the property. The emphasis was taken on the correct choice of properties for the database. Last but not least, the thesis defines the concepts not only in the field of forensic engineering but also in the system methodology.
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Markgren, Hanna. "Fatigue analysis - system parameters optimization." Thesis, Umeå universitet, Institutionen för fysik, 2018. http://urn.kb.se/resolve?urn=urn:nbn:se:umu:diva-151755.
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For a mechanical system exposed to repeated cyclic loads fatigue is one of the most common reasons for the system to fail. However fatigue failure calculations are not that well developed. Often when fatigue calculations are made they are done with standard loads and simplified cases. The fatigue life is the time from start of use until the system fails due to fatigue and there does exist some building blocks to calculate the fatigue life. The aim for this project was to put these building blocks together in a workflow that ca be used for calculations of the fatigue life. The workflow was built so that it should be easy to follow for any type of me- chanical system. The start of the workflow is the load history of the system. This is then converted into a stress history that is used for the calculations of the fatigue life. Finally the workflow was tested with two test cases to see if it was possible to use. In Algoryx Momentum the model for each case was set up and then the load history was extracted for each time step during the simulation. To convert the load history to stress history FEM calculations was needed, this was however not a part of this project so the constants to convert loads to stress was given. Then with the stress history in place it was possible to calculate the fatigue life. The results from both test cases were that it was possible to follow every step of the workflow and by this use the workflow to calculate the fatigue life. The second test also showed that with an optimization the system was improved and this resulted in a longer lifetime. To conclude the workflow seems to work as expected and is quite easy to follow. The result given by using the workflow shows the fatigue life, which was the target for the project. However, to be able to evaluate the workflow fully and understand how well the resluts can be trusted a comparison with empiric data would be needed. Still the results from the tests are that the workflow seem to give reasonable results when calculating fatigue life.
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Harrison, Claire Nicola. "Biological studies of the haemopoietic system in essential thrombocythaemia." Thesis, University of Oxford, 1999. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.312452.
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Barnes, Andrew D. "System parameters of X-ray binaries." Thesis, University of Southampton, 2006. https://eprints.soton.ac.uk/420068/.
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Kelly, William Joubert. "Use of a Group Support System to identify essential skills." Diss., The University of Arizona, 1995. http://hdl.handle.net/10150/187121.
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This study used Group Support Systems software tools to determine whether they can be used to develop or improve essential writing skills for learning disabled students at the third grade level. The research study used two processes to evaluate whether these outcomes could be achieved. Using the same group, participants initially were tested without any specific knowledge regarding written language disorders. The second series of testing was done after the same group had read three chapters on "Handwriting Disorders" (Bain, 1991). In both processes the participants used the same testing procedures to determine their responses to questions presented. In each session responses were evaluated to determine similarity to each other and whether this tool could provide evidence that Group Support Systems could be used successfully to develop essential writing skills for learning disabled students. In the initial testing, the no-knowledge group developed broad essential skills that, when compared with the knowledge group, served as general categories. When the participants were tested after having gained knowledge, their responses, while comparable to the no-knowledge group, were more specific. This influx of knowledge provides support for using Group Support systems and its software tools to develop effective essential skills.
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Vaikakkara, Chithran Aarya. "Axon guidance genes are essential in the adult nervous system." Thesis, University of British Columbia, 2016. http://hdl.handle.net/2429/57654.
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Axon guidance cues are extracellular signals that direct the growth and steering of neuronal growth cones. Both attractive and repulsive cues are required to guide developing axons to their targets. Nonetheless, after axons have reached their targets and established functional circuits, many neurons continue to express these developmental cues. The expression of these genes in the adult indicates that there are likely additional roles for guidance cues beyond the initial phase of neuronal process outgrowth, growth cone navigation, and target innervation. The central goal of my work is to determine the functions of these cues in the mature nervous system. I hypothesize that axon guidance genes expressed in the adult nervous system have functional roles in the maintenance of neural circuits. Work in the past few decades has led to the discovery of numerous axon guidance genes and identified their functions during development. This study is the first to perform an RNA-mediated interference (RNAi) screen for axon guidance genes that have functional roles in the mature nervous system. Axon guidance genes expressed in the adult Drosophila melanogaster nervous system were identified using bio-informatics tools. In Drosophila, more than 96% of embryonic cues continue to be expressed in the adult. The axon guidance genes were knocked down in adult neurons using RNAi via spatial and temporal control of GAL4-UAS system. I have identified 15 axon guidance genes that are essential for survival and normal behavior (climbing, mobility, activity/rest cycle) in adult Drosophila. The results suggests that axon guidance genes are functional in the adult nervous system and may be involved in the maintenance of neural circuits underlying these phenotypes. Further studies on circuit morphology are required to understand better how axon guidance genes contribute to the maintenance of neuronal structure in adult brains.Medicine, Faculty of
Graduate
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Carden, Frank. "DESIGN PARAMETERS FOR A FM/FM SYSTEM." International Foundation for Telemetering, 1991. http://hdl.handle.net/10150/612916.
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International Telemetering Conference Proceedings / November 04-07, 1991 / Riviera Hotel and Convention Center, Las Vegas, NevadaDesign parameters for a FM/FM telemetry system are determined in terms of the IRIG specifications for proportional bandwidth channels. Three mathematical models used by designers of the above processes are extended and compared. That is, FM multitone models are used to establish the relationship between frequency deviations, modulation indices, signal-to-noise and IF bandwidth for the IRIG channels. Since spectral efficiency and signal quality are of major importance, a goal of the design is to have a minimum IF bandwidth, while fixing as large as possible the values of the modulation indices for the subcarriers modulating the carrier in order to achieve as large as needed output signal-to-noise ratio.
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Jones, Catherine Louise. "Molecular characterisation of an essential membrane transporter system of 'Streptococcus uberis'." Thesis, University of Sussex, 2005. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.424206.
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Karim, Kh Nafis. "INTELLIGENT SYSTEM FOR MONITORING PHYSIOLOGICAL PARAMETERS USING CAMERA." Thesis, Mälardalens högskola, Inbyggda system, 2015. http://urn.kb.se/resolve?urn=urn:nbn:se:mdh:diva-29834.
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Measuring physiological parameters or vital sign using camera has become popular in recent years. Contact-less monitoring and extraction of vital signs can be important source of information in situations like medical care system and safety control system. This paper presents the implementation of real-time, non-contact method for extraction of vital signs, heart rate in this case. A better face tracking method is used for efficient face detection. This study extends some of the previous works done and have a comparison study with several methods. The developed system used filtering with window over the green channel of the signal and then Converted to frequency domain to analyze the signal to detect heart rate. The developed system achieved high correlation and showed small error while referencing with actual heart signal from ECG. This method delivers better result in better light condition but gives fairly good result on lower light as well.
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North, Rachel Caroline. "Probing the system parameters of cataclysmic variable stars." Thesis, University of Southampton, 2001. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.390623.
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Fairthorne, Marianne. "The supermarket model with system-size dependent parameters." Thesis, London School of Economics and Political Science (University of London), 2010. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.538738.
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Bennia, Abdelhak. "Mimo systems parameters identification." Thesis, Virginia Tech, 1986. http://hdl.handle.net/10919/41579.
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In this thesis, a presentation of a new canonical representation of multi-input multioutput systems is given. The new characterization covers the full range of practical situations in linear systems according to the structural properties and model of the perturbations which are known. Its direct link to ARMA processes as well as to classical state space representation ls also given.
The importance of the new representation lies in the fact that all unknown parameters and state variables appear linearly multlplied by either external variables (inputs and outputs) that appear in the data record, or by matrices that are only composed of ieroes and ones. This property enables us to perform a joint state and parameters estimation. Moreover, if the noises are gaussian and their statistics are known, an on-line algorithm that involves a standard dlscrete-time time-varying Kalman filter is proposed and used successfully in the estimation of unknown parameters for simulated examples.
Master of Science
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SCHAEFFER, KAREN RUTH. "COLLABORATIVE DECISION MAKING ACROSS SYSTEM BOUNDARIES: ESSENTIAL ELEMENTS AND YOUTH-SPECIFIC OUTCOMES." University of Cincinnati / OhioLINK, 2001. http://rave.ohiolink.edu/etdc/view?acc_num=ucin991159010.
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Ge, Ma. "Structural damage detection and identification using system dynamic parameters." Related electronic resource: Current Research at SU : database of SU dissertations, recent titles available full text, 2005. http://wwwlib.umi.com/cr/syr/main.
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Szczepanski, Michał. "Online stereo camera calibration on embedded systems." Thesis, Université Clermont Auvergne (2017-2020), 2019. http://www.theses.fr/2019CLFAC095.
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Cette thèse décrit une approche de calibration en ligne des caméras stéréo pour des systèmes embarqués. Le manuscrit introduit une nouvelle mesure de la qualité du service de cette fonctionnalité dans les systèmes cyber physiques. Ainsi, le suivi et le calcul des paramètres internes du capteur (requis pour de nombreuses tâches de vision par ordinateur) est réalisé dynamiquement. La méthode permet à la fois d'augmenter la sécurité et d'améliorer les performances des systèmes utilisant des caméras stéréo. Elle prolonge la durée de vie des appareils grâce à cette procédure d'auto-réparation, et peut accroître l'autonomie. Des systèmes tels que les robots mobiles ou les lunettes intelligentes en particulier peuvent directement bénéficier de cette technique.La caméra stéréo est un capteur capable de fournir un large spectre de données. Au préalable, le capteur doit être calibré extrinsèquement, c'est à dire que les positions relatives des deux caméras doivent être déterminées. Cependant, cette calibration extrinsèque peut varier au cours du temps à cause d'interactions avec l'environnement extérieur par exemple (chocs, vibrations...). Ainsi, une opération de recalibration permet de corriger ces effets. En effet, des données mal comprises peuvent entraîner des erreurs et le mauvais fonctionnement des applications. Afin de contrer un tel scénario, le système doit disposer d'un mécanisme interne, la qualité des services, pour décider si les paramètres actuels sont corrects et/ou en calculer des nouveaux, si nécessaire. L'approche proposée dans cette thèse est une méthode d'auto-calibration basée sur l'utilisation de données issues uniquement de la scène observée (sans modèles contrôlés). Tout d'abord, nous considérons la calibration comme un processus système s'exécutant en arrière-plan devant fonctionner en continu et en temps réel. Cette calibration interne n'est pas la tâche principale du système, mais la procédure sur laquelle s'appuient les applications de haut niveau. Pour cette raison, les contraintes systèmes limitent considérablement l'algorithme en termes de complexité, de mémoire et de temps. La méthode de calibration proposée nécessite peu de ressources et utilise des données standards provenant d'applications de vision par ordinateur, de sorte qu'elle est masquée à l'intérieur du pipeline applicatif. Dans ce manuscrit, de nombreuses discussions sont consacrées aux sujets liés à la calibration de caméras en ligne pour des systèmes embarqués, tels que des problématiques sur l'extraction de points d'intérêts robustes et au calcul du facteur d'échelle, les aspects d’implémentation matérielle, les applications de haut niveau nécessitant cette approche, etc.Enfin, cette thèse décrit et explique une méthodologie pour la constitution d'un nouveau type d'ensemble de données, permettant de représenter un changement de position d'une caméra,pour valider l’approche. Le manuscrit explique également les différents environnements de travail utilisés dans la réalisation des jeux de données et la procédure de calibration de la caméra. De plus, il présente un premier prototype de casque intelligent, sur lequel s’exécute dynamiquement le service d’auto-calibration proposé. Enfin, une caractérisation en temps réel sur un processeur embarqué ARM Cortex A7 est réaliséeThis thesis describes an approach for online calibration of stereo cameras on embeddedsystems. It introduces a new functionality for cyber physical systems by measuring the qualityof service of the calibration. Thus, the manuscript proposes a dynamic monitoring andcalculation of the internal sensor parameters required for many computer vision tasks. Themethod improves both security and system efficiency using stereo cameras. It prolongs the lifeof the devices thanks to this self-repair capability, which increases autonomy. Systems such asmobile robots or smart glasses in particular can directly benefit from this technique.The stereo camera is a sensor capable of providing a wide spectrum of data. Beforehand, thissensor must be extrinsically calibrated, i.e. the relative positions of the two cameras must bedetermined.. However, camera extrinsic calibration can change over time due to interactionswith the external environment for example (shocks, vibrations...). Thus, a recalibrationoperation allow correcting these effects. Indeed, misunderstood data can lead to errors andmalfunction of applications. In order to counter such a scenario, the system must have aninternal mechanism, a quality of service, to decide whether the current parameters are correctand/or calculate new ones, if necessary.The approach proposed in this thesis is a self-calibration method based on the use of data coming only from the observed scene, without controlled models. First of all, we consider calibration as a system process running in the background and having to run continuously in real time. This internal calibration is not the main task of the system, but the procedure on which high-level applications rely. For this reason, system constraints severely limit the algorithm in terms of complexity, memory and time. The proposed calibration method requires few resources and uses standard data from computer vision applications, so it is hidden within the application pipeline. In this manuscript, we present many discussions to topics related to the online stereocalibration on embedded systems, such as problems on the extraction of robust points ofinterest, the calculation of the scale factor, hardware implementation aspects, high-levelapplications requiring this approach, etc. Finally, this thesis describes and explains amethodology for the building of a new type of dataset to represent the change of the cameraposition to validate the approach. The manuscript also explains the different workenvironments used in the realization of the datasets and the camera calibration procedure. Inaddition, it presents the first prototype of a smart helmet, on which the proposed self-calibration service is dynamically executed. Finally, this thesis characterizes the real-timecalibration on an embedded ARM Cortex A7 processor
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Inatani, Masaru. "Heparan sulfate is essential for morphogenesis and axon guidance in central nervous system." Kyoto University, 2005. http://hdl.handle.net/2433/145296.
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Paiva, Daniel S. "Using stylistic parameters to control a natural language generation system." Thesis, University of Brighton, 2004. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.418576.
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Raoult, Nina. "Calibration of plant functional type parameters using the adJULES system." Thesis, University of Exeter, 2017. http://hdl.handle.net/10871/29837.
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Land-surface models (LSMs) are crucial components of the Earth system models (ESMs) that are used to make coupled climate-carbon cycle projections for the 21st century. The Joint UK Land Environment Simulator (JULES) is the land-surface model used in the climate and weather forecast models of the UK Met Office. JULES is also extensively used offline as a land-surface impacts tool, forced with climatologies into the future. In this study, JULES is automatically differentiated with respect to JULES parameters using commercial software from FastOpt, resulting in an analytical gradient, or adjoint, of the model. Using this adjoint, the adJULES parameter estimation system has been developed to search for locally optimum parameters by calibrating against observations. This thesis describes adJULES in a data assimilation framework and demonstrates its ability to improve the model-data fit using eddy-covariance measurements of gross primary productivity (GPP) and latent heat (LE) fluxes. The adJULES system is extended to have the ability to calibrate over multiple sites simultaneously. This feature is used to define new optimised parameter values for the five plant functional types (PFTs) in JULES. The optimised PFT-specific parameters improve the performance of JULES at over 85% of the sites used in the study, at both the calibration and evaluation stages. The new improved parameters for JULES are presented along with the associated uncertainties for each parameter. The results of the calibrations are compared to structural changes and used in a cluster analysis in order to challenge the PFT definitions in JULES. This thesis concludes with simple sensitivity studies which assess how the calibration of JULES has affected the sensitivity of the model to CO2-induced climate change.
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Rowe, Andy (Andy Harold). "Managing a crisis : leadership and organizational elements essential for success." Thesis, Massachusetts Institute of Technology, 2016. http://hdl.handle.net/1721.1/107363.
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Thesis: S.M. in Engineering and Management, Massachusetts Institute of Technology, School of Engineering, System Design and Management Program, Engineering and Management Program, 2016.Cataloged from PDF version of thesis.
Includes bibliographical references (pages 89-91).
Every organization will face a crisis at some point in its history. How well an organization handles the preparation, response and recovery from a crisis is highly dependent on the strength of its leadership and overall design. This thesis develops a framework of five leadership and seven organizational elements necessary for the evaluation of an organization's response during a crisis. Utilizing this framework, interviews were conducted with senior leaders of businesses that successfully navigated tremendous crisis situations. As a result of these interviews, I determined the leadership elements of a strong foundation of support, realistic analysis and a propensity to act had the greatest impact on the success or failure of a leader during a crisis. The organizational elements of leadership support, a strong shared vision, and the ability to think systemically were also determined essential to the effective handling of a crisis. Organizations should dedicate time and resources to cultivate the robust development of these elements as part of their crisis preparation.
by Andy Rowe.
S.M. in Engineering and Management
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Obuaku-Igwe, Chinwe Christopher. "The Nigerian healthcare system: A study of access to affordable essential medicines and healthcare." University of the Western Cape, 2015. http://hdl.handle.net/11394/4845.
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Philosophiae Doctor - PhDThe concepts of availability, affordability, accessibility and acceptability otherwise known as the 4As of ATM are key factors that influence access to essential medicines in any given health system. However, the exact scale and extent to which these 4As affect various populations in Nigeria remains unknown. This study investigates the Nigerian healthcare system with special focus on access to quality and affordable essential medicines in three Nigerian States; Abuja, Kaduna and Nassarawa, by drawing upon primary data, using qualitative and quantitative research methods.
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SEIXAS, TERCIA GUEDES. "INFLUENCE OF ECOLOGICAL AND BIOLOGICAL PARAMETERS ON THE ACCUMULATION OF ESSENTIAL (SE, AS, CU) AND NON-ESSENTIAL ELEMENTS (HG, CD, AG, PB) BY THE LIVER AND KIDNEY OF CETACEANS FROM THE WESTERN SOUTH ATLANTIC OCEAN." PONTIFÍCIA UNIVERSIDADE CATÓLICA DO RIO DE JANEIRO, 2008. http://www.maxwell.vrac.puc-rio.br/Busca_etds.php?strSecao=resultado&nrSeq=12974@1.
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PONTIFÍCIA UNIVERSIDADE CATÓLICA DO RIO DE JANEIROCOORDENAÇÃO DE APERFEIÇOAMENTO DO PESSOAL DE ENSINO SUPERIOR
CONSELHO NACIONAL DE DESENVOLVIMENTO CIENTÍFICO E TECNOLÓGICO
Neste estudo, avaliou-se a influência de alguns parâmetros ecológicos e biológicos sobre a acumulação dos elementos- traço e mercúrio orgânico (HgOrg)no fígado e rins de espécies de cetáceos de hábitos costeiros (Pontoporia blainvillei, N = 31; Sotalia guianensis, N = 21) e oceânicos (Stenella coeruleoalba, N = 3; Stenella frontalis, N = 4), acidentalmente capturados em duas áreas distintas da costa brasileira (tropical - litoral do norte do estado do Rio de Janeiro e subtropical - litoral do estado do Rio Grande do Sul). Assim, foram gerados novos dados a respeito das concentrações destes elementos em órgãos de cetáceos marinhos ainda pouco estudados, especialmente em uma região com pouca informação como a porção oeste do Oceano Atlântico Sul. Para tal, foram aplicados métodos analíticos baseados na técnica da espectrometria de absorção atômica (AAS), utilizando a espectrometria de absorção atômica com forno de grafite (GF-AAS) e a espectrometria de absorção atômica com vapor frio (CVAAS), as mais frequentemente aplicadas para a determinação de elementos-traço e mercúrio respectivamente, em amostras biológicas. Estas técnicas apresentaram ótima precisão e exatidão comprovadas através da análise de materiais de referência certificados (CRM) do National Research Council - Canadá (DORM-2, DOLT-2 e TORT-2). Foram observadas diferenças regionais (região tropical e subtropical) e inter-específicas (golfinhos de hábitos costeiro e oceânico) sobre a acumulação dos elementos- traço e HgOrg nos órgãos estudados. As espécies de hábito oceânico apresentaram as maiores concentrações destes elementos em seus órgãos. O sexo dos indivíduos não influiu na bioacumulação dos elementos e HgOrg. Os parâmetros população, comprimento total, e maturidade sexual, influenciaram na acumulação dos elementos-traço e HgOrg em ambos os órgãos, de acordo com a espécie e a área de captura. S. guianensis, co- habita o mesmo ambiente que P. blainvillei, e preferencialmente se alimenta de peixes maiores e predadores, neste estudo, apresentou a razão molar de 1:1 entre o Se e o Hg,mostrando assim, que provavelmente o processo de destoxificação de metilmercúrio hepático esteja ocorrendo. A espécie P. blainvillei se alimenta preferencialmente de cefalópodes e peixes pequenos, e apresentou uma razão molar de 4:1 entre o Se e o Hg no fígado. Os metais de transição Cd e Ag, que também interagem com o Se hepático nos mamíferos, apresentaram correlações significativas no fígado dos cetáceos marinhos estudados. A espécie S. guianensis apresentou correlações significativas entre as concentrações molares de Se e Cd (p = 0,01) e Se e Ag (p < 0,001) no fígado. Para a espécie P. blainvillei, os indivíduos provenientes de ambas as regiões (tropical e subtropical) apresentaram correlações significativas entre as concentrações molares de Se e Hg (p < 0,001) no fígado. Somente os indivíduos de P. blainvillei capturados na região tropical apresentaram correlações significativas entre as concentrações molares de Se e Cd (p < 0,001). Não só as diferentes condições ambientais, mas também, o tempo de vida, o estágio de crescimento e, principalmente a preferência alimentar, influenciaram fortemente sobre a acumulação de elementos- traço e HgOrg nos tecidos dos cetáceos assim como, sobre suas inter-relações.
The present work tested whether ecological and biological parameters have an influence on the accumulation of trace elements and organic mercury (HgOrg) by the liver and kidney of coastal (Pontoporia blainvillei, N = 31; Sotalia guianensis, N = 21) and oceanic (Stenella coeruleoalba, N = 3; Stenella frontalis, N = 4) cetaceans species incidentally caught in fishing nets along two Brazilian coastal areas (tropical - northern Rio de Janeiro State and subtropical -Rio Grande do Sul State). This research added new insight to the existing studies with trace element concentrations in internal organs of marine cetaceans from the southwestern Atlantic Ocean. Few studies have documented trace element concentrations in marine mammals in this area. Analytical methodologies based on atomic absorption spectrometry (AAS), using the graphite furnace (GF-AAS) and cold vapor (CV-AAS) techniques were applied for this purpose. They are the most popular analytical techniques applied for trace element and mercury determination, respectively, in biological samples. Precision and accuracy of the analytical methods were determined and monitored using certified material from National Research Council - Canada (DORM-2, DOLT-2 and TORT- 2). Interspecies (coastal and oceanic cetacean species) and regional (tropical and subtropical regions) differences were observed in the accumulation of trace elements and organic mercury in organs, liver and kidney. The highest concentrations of these elements were observed in the liver of the oceanic cetacean species. However, no gender differences were found on the bioaccumulation of trace elements and also organic mercury. Biological parameters such as, population, body length and sexual maturity influenced on the trace element and organic mercury accumulation by both organs, according to the cetacean species and caught area. S. guianensis, which co- habits the same coastal marine environment that P. blainvillei species, was the only dolphin species that presented a Se:Hg molar ratio close to 1:1, showing that a probable detoxification process can be occurring in the liver of S. guianensis. This dolphin species feeds mainly on predatory fish, while P. blainvillei feeds mainly on fish and cephalopods. P. blainvillei presented a Se:Hg molar ratio close to 4:1. It`s known that transition metals, such as Hg, Cd and Ag, have an interaction with Se in the liver of marine mammals. The molar concentrations of Cd (p = 0.01) and Ag (p < 0.001) presented significant correlations with the hepatic molar Se in the liver of S. guianensis. P. blainvillei from both sampling areas presented a high significant correlation for molar Se to Hg concentrations (p < 0.001) in liver. Meanwhile, only individuals of P. blainvillei from tropical region showed a significant correlation with hepatic Se and Cd (p < 0.001). Based on the results present here, it is possible to conclude that, not only the different environmental conditions, but also life span, growth stage but mainly the feeding habit influenced the accumulation of trace elements and organic mercury by cetacean tissues. These ecological and biological parameters influenced on the inter-element relationships.
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Oguzmert, Metin. "Displacement-based seismic design of structures using equivalent linear system parameters." Related electronic resource: Current Research at SU : database of SU dissertations, recent titles available full text, 2006. http://proquest.umi.com/login?COPT=REJTPTU0NWQmSU5UPTAmVkVSPTI=&clientId=3739.
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Mat, Hanapi bin. "Protein extraction using reverse micelles : system parameters and mass transfer studies." Thesis, Imperial College London, 1994. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.434439.
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Benedetti, Lorenzo. "Substructuring approache in state space models for dynamic system parameters identification." Master's thesis, Alma Mater Studiorum - Università di Bologna, 2011. http://amslaurea.unibo.it/2325/.
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In the recent decade, the request for structural health monitoring expertise increased exponentially in the United States. The aging issues that most of the transportation structures are experiencing can put in serious jeopardy the
economic system of a region as well as of a country. At the same time, the monitoring of structures is a central topic of discussion in Europe, where the preservation of historical buildings has been addressed over the last four
centuries. More recently, various concerns arose about security performance of civil structures after tragic events such the 9/11 or the 2011 Japan earthquake: engineers looks for a design able to resist exceptional loadings due to
earthquakes, hurricanes and terrorist attacks. After events of such a kind, the assessment of the remaining life of the structure is at least as important as the initial performance design. Consequently, it appears very clear that the introduction of reliable and accessible damage assessment techniques is crucial for the localization of issues and for a correct and immediate rehabilitation.
The System Identification is a branch of the more general Control Theory. In Civil Engineering, this field addresses the techniques needed to find mechanical characteristics as the stiffness or the mass starting from the signals captured by sensors.
The objective of the Dynamic Structural Identification (DSI) is to define, starting from experimental measurements, the modal fundamental parameters of a generic structure in order to characterize, via a mathematical model, the dynamic behavior.
The knowledge of these parameters is helpful in the Model Updating procedure, that permits to define corrected theoretical models through experimental validation. The main aim of this technique is to minimize the differences between the theoretical model results and in situ measurements of
dynamic data.
Therefore, the new model becomes a very effective control practice when it comes to rehabilitation of structures or damage assessment.
The instrumentation of a whole structure is an unfeasible procedure sometimes because of the high cost involved or, sometimes, because it’s not possible to physically reach each point of the structure. Therefore, numerous scholars
have been trying to address this problem. In general two are the main involved methods.
Since the limited number of sensors, in a first case, it’s possible to gather time histories only for some locations, then to move the instruments to another location and replay the procedure. Otherwise, if the number of sensors is
enough and the structure does not present a complicate geometry, it’s usually sufficient to detect only the principal first modes. This two problems are well presented in the works of Balsamo [1] for the application to a simple system and Jun [2] for the analysis of system with a
limited number of sensors.
Once the system identification has been carried, it is possible to access the actual system characteristics. A frequent practice is to create an updated FEM model and assess whether the structure fulfills or not the requested functions.
Once again the objective of this work is to present a general methodology to analyze big structure using a limited number of instrumentation and at the same time, obtaining the most information about an identified structure without
recalling methodologies of difficult interpretation. A general framework of the state space identification procedure via OKID/ERA algorithm is developed and
implemented in Matlab. Then, some simple examples are proposed to highlight the principal characteristics and advantage of this methodology. A new algebraic manipulation for a prolific use of substructuring results is developed
and implemented.
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Perea, Fabián Carlos Antonio. "Physical parameters identification for a prototype of active magnetic bearing system." Master's thesis, Pontificia Universidad Católica del Perú, 2017. http://tesis.pucp.edu.pe/repositorio/handle/123456789/8623.
Full textAbstract:
In this thesis the algorithms and strategies for active magnetic bearing should be analysed, implemented and simulated in Matlab as well as experimentally tested in the real-time computation system for a prototype of active magnetic bearing. Develop a general method and algorithm identi cation for active magnetic bearings prototype and get real system parameters that allow generate the equation of state
of the system to control its further development. The specific objectives in this Thesis are:
Develop a data acquisition system for the AMBs. Analyse the mathematical model of the system from the real system. Conduct experiments of a physical model for data collection. Develop an identification algorithm for the parameters of the real AMBs. Validate system developed by testing the prototype.Tesis
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Vanhaitsma, Amanda Joy. "Methods for Evaluating Aquifer-System Parameters from a Cumulative Compaction Record." Thesis, Virginia Tech, 2016. http://hdl.handle.net/10919/72245.
Full textAbstract:
Although many efforts and strategies have been implemented to reduce over-pumping of aquifer-systems, land subsidence is still a serious issue worldwide. Accurate aquifer characterization is critical to understand the response of an aquifer-system to prolonged pumping but is often difficult and expensive to conduct. The purpose of this thesis is to determine the validity of estimating aquifer-system parameters from a single cumulative compaction record and corresponding nested water-level data deconvolved into temporal components.
Over a decade of compaction and water-level data were collected from an extensometer and multi-level piezometer at the Lorenzi site in Las Vegas Valley and when graphed yearly, seasonal, and daily signals are observed. Each temporal signal reflects different characteristics of the aquifer-system, including the distinction between aquifer and aquitard parameters, as the three temporal stresses influence the compaction record uniquely. Maximum cross-correlation was used to determine the hydrodynamic lag between changing water-levels and subsidence within the seasonal signal while principal components analysis was used to statistically verify the presence of the three temporal signals.
Assumptions had to be made but nearly all estimated Lorenzi site aquifer-system parameters fell either within the reasonable range or were similar in magnitude to parameter values estimated in previous studies. Unfortunately, principal components analysis was unable to detect the three temporal signals. A cumulative compaction record may be difficult to obtain but analyzing the precision measurements of an extensometer results in precise aquifer-system parameters and as the precision of aquifer-system parameters increase so does the ability to sustainably manage groundwater.Master of Science
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Acker, Frank. "Use of Entropy for Feature Selection with Intrusion Detection System Parameters." NSUWorks, 2015. http://nsuworks.nova.edu/gscis_etd/370.
Full textAbstract:
The metric of entropy provides a measure about the randomness of data and a measure of information gained by comparing different attributes. Intrusion detection systems can collect very large amounts of data, which are not necessarily manageable by manual means. Collected intrusion detection data often contains redundant, duplicate, and irrelevant entries, which makes analysis computationally intensive likely leading to unreliable results. Reducing the data to what is relevant and pertinent to the analysis requires the use of data mining techniques and statistics. Identifying patterns in the data is part of analysis for intrusion detections in which the patterns are categorized as normal or anomalous. Anomalous data needs to be further characterized to determine if representative attacks to the network are in progress. Often time subtleties in the data may be too muted to identify certain types of attacks. Many statistics including entropy are used in a number of analysis techniques for identifying attacks, but these analyzes can be improved upon. This research expands the use of Approximate entropy and Sample entropy for feature selection and attack analysis to identify specific types of subtle attacks to network systems. Through enhanced analysis techniques using entropy, the granularity of feature selection and attack identification is improved.
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Crone, Steven A. "ErbB2 is essential for maintenance of the enteric nervous system and prevention of dilated cardiomyopathy /." Diss., Connect to a 24 p. preview or request complete full text in PDF formate. Access restricted to UC campuses, 2002. http://wwwlib.umi.com/cr/ucsd/fullcit?p3071016.
Full text
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Hidano, Shinya, Louise M. Randall, Lucas Dawson, Hans K. Dietrich, Christoph Konradt, Peter J. Klover, Beena John, et al. "STAT1 Signaling in Astrocytes Is Essential for Control of Infection in the Central Nervous System." AMER SOC MICROBIOLOGY, 2016. http://hdl.handle.net/10150/622765.
Full textAbstract:
The local production of gamma interferon (IFN-gamma) is important to control Toxoplasma gondii in the brain, but the basis for these protective effects is not fully understood. The studies presented here reveal that the ability of IFN-gamma to inhibit parasite replication in astrocytes in vitro is dependent on signal transducer and activator of transcription 1 (STAT1) and that mice that specifically lack STAT1 in astrocytes are unable to limit parasite replication in the central nervous system (CNS). This susceptibility is associated with a loss of antimicrobial pathways and increased cyst formation in astrocytes. These results identify a critical role for astrocytes in limiting the replication of an important opportunistic pathogen. IMPORTANCE Astrocytes are the most numerous cell type in the brain, and they are activated in response to many types of neuroinflammation, but their function in the control of CNS-specific infection is unclear. The parasite Toxoplasma gondii is one of the few clinically relevant microorganisms that naturally infects astrocytes, and the studies presented here establish that the ability of astrocytes to inhibit parasite replication is essential for the local control of this opportunistic pathogen. Together, these studies establish a key role for astrocytes as effector cells and in the coordination of many aspects of the protective immune response that operates in the brain.
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Chui, Nelson Loong Chik. "Subspace methods and informative experiments for system identification." Thesis, University of Cambridge, 1997. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.298794.
Full text
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Kabuba, John Tshilenge. "Steam extraction of essential oils : investigation of process parameters." Thesis, 2012. http://hdl.handle.net/10210/7577.
Full textAbstract:
M.Tech.Essential oils are volatile oils, generally odorous, which occur in certain plants or specified parts of plants, and are recovered by accepted procedures, such that the nature and composition of the product is, as nearly as practicable, unchanged by such procedures (ISO, 1968). The principal uses are as: flavouring agent, medicinal and aromatherapy application. Today, the essential oils are sought-after for innumerable applications starting from markers for plant identifications to bases for semi-synthesis of highly complex molecules. The extraction of highly delicate essential oils from plants remains a crucial step in all these applications. By using steam to mediate the extraction, it is possible to maintain mild conditions and effect superior extraction. In the current work, an integrated procedure for steam extraction followed by volatiles sampling and analysis from the leaves of the Eucalyptus tree was explored. There are two problems to overcome in the extraction from solid plant materials: that of releasing the essential oils from solid matrix and letting it diffuse out successfully in a manner that can be scaled-up to industrial volumes. Towards this end, the effect of different parameters, such as temperature, pressure and extraction time on the extraction yield was investigated and the experimental results show that all of these temperatures (90 °C, 97°C, and 99°C), were significant parameters affecting yield. Increase in yield was observed as pressure was increased and the use of high pressure (150 kPa) in steam extraction units permits much more rapid and complete distillation of essential oils over atmospheric pressure. The yield was calculated from the relation between the essential oil mass extracted and the raw material mass used in the extraction. The volatiles, Eucalyptus oil in vapour form released from the leaves were condensed and analyzed using Gas chromatography, and eight major components were found to be contained in this species. A mathematical model based on diffusion of essential oil from the leaves was developed. Using a numerical method, the best diffusion coefficient was established for different operating conditions by comparing the model concentration of oil remaining in the leaves with the experimental amount of oil recovered; hence minimizing the sum of squared errors. It was found that one cannot simply assume that the oil leached and recovered was the same as that originally present in the leaves. The initial mass of oil was determined by fitting the diffusion model to the data. An Arrhenius model was used to account for the effect of temperature. The resulting expression for the diffusion coefficient as a function of temperature can now be used to model the large scale extraction of the essential oils from Eucalyptus leaves.
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Zhuo, Ye-Qi, and 卓也琦. "Optimization of Hadoop System Configuration Parameters." Thesis, 2015. http://ndltd.ncl.edu.tw/handle/29088821473196350661.
Full textAbstract:
碩士國立臺灣大學
資訊工程學研究所
103
Hadoop system is very popular recent year, which is a software framework with distributed processing large-scale data-sets by using a cluster of machines with MapReduce programming model. However, there are still two essential challenges for Hadoop users to manage the Hadoop system. (1) To tune the parameters appropriately; (2) To deal with dozens of configuration parameters which are involved to its performance. This paper will focus on optimizing the Hadoop MapReduce job performance. Our approach has two key model: Prediction and Optimization. The Prediction model is to estimate execution time of a MapReduce job and the Optimization model is to search the approximately optimal configuration parameters by invoking the prediction part repeatedly. By using an analytical method to choose approximately optimal configuration parameters to improve users’ job performance . Besides the configuration parameter tuning, the relevance of each parameters and the evaluation of our methods will also be discussed in this paper. Our paper may provide users a better method to improve the Hadoop system performance and save the hardware resource.
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Lin, Shin-Jiun, and 林欣駿. "Inspection system utilized for axial motion parameters." Thesis, 2008. http://ndltd.ncl.edu.tw/handle/34663695254577659752.
Full textAbstract:
碩士雲林科技大學
機械工程系碩士班
96
The cutters’ precision depends on that of the applied cutter grinders. And the cutters’ precision will influence the products’ quality. Therefore, elimination of error sources will be beneficial for the improvement of cutter grinders. The axial motion mechanism, e.g. ball screw and linear guide, is one of the major error sources in cutter grinders. The precisions of positioning, straightness and angle will result from the errors of axial motion module. For error elimination and precision enhancement of cutter grinders, the inspection system for axial motion module is desirable. The inspection system utilized for axial motion module parameters includes miniature laser interferometers, inspections of geometrical errors, integration of inspection signals, development of systematic program and uncertainty analysis. The main inspections are parallelism of linear guider, positioning and angle inspections of motion stage and final axial positioning and angle inspections. In the investigation, modulized and self- developed inspection system for axial motion parameters of 5 axes CNC cutter grinder has been established. With this research, reference standard for axial installation can be provided. Some modules and programs can be also extensively applied to inspection of precision machine tools.
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Yang, Chia-Ming, and 楊家鳴. "Design of Analysis System for Arteriosclerosis Parameters." Thesis, 2008. http://ndltd.ncl.edu.tw/handle/17689893827963872518.
Full textAbstract:
碩士南台科技大學
資訊工程系
96
Cardiovascular diseases are always listed in ten major causes of death according to the statistical data of the Department of Health in recent years. There is a tendency towards increase each year. The pathological changes of Arteries are the major causes of the cardiovascular diseases. However, cardiovascular diseases are also listed in ten major causes of death according to the statistical data of the Department of Health about middle-aged people, which there is a tendency towards increase each year. Not only have the aged people suffered from cardiovascular diseases, but also middle-aged people should prevent the symptoms. The interface of the designed system includes the storage interface of physiological signal and the analysis interface of physiological signal. The storage interface of physiological signal can display and record the physiological signal that there are ECG, PCG and 4-channel PPG. Heart rate (HR) and pulse wave velocity (PWV) can be real-time calculated. The analysis interface of physiological signal can choose bilateral analysis, left-sided analysis or right-sided analysis in the optional mode. There are four advanced analysis mode can be setup. HR, PWV, Stiffness Index and Reflection Index can be analyzed by using the designed computer functions. The system can be used to evaluate the sclerosis characteristic of full-body arteries with a long-term record.
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Wang, Shin-Yu, and 汪昰佑. "Steering system geometry design and parameters analysis." Thesis, 2013. http://ndltd.ncl.edu.tw/handle/52874346394958251279.
Full textAbstract:
碩士國立屏東科技大學
車輛工程系所
101
The purpose of this study is to propose a procedure for designing the steering system of LEV. First, we collect the designs parameters from the same level vehicle, and plan out the design process and application, then determine the best hard point design position of steering system by using Ackermann steering theory, Dixon theory, and Kennedy’s theorem. After that the model of suspension including the steering system have been created by using ADAMS/CAR, and the motion of parallel wheel travel and steering then be executed for explore its motion movement parameter variations. The computer simulation can be used to modify points for finding the ideal steering system geometry .By modified the hard points including knuckle, knuckle arm contacts point, the tie rod inner and tie rod outer, steering box position, etc., in the steering motion parameters can meet the expected range of motion parameters and effectively applied to suspension geometry institutions calibration and correction.
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Kapsis, Ilias. "Blockchain and cryptocurrencies: essential tools in a two-tier financial system." 2019. http://hdl.handle.net/10454/17221.
Full textAbstract:
Yes• This article discusses the current situation in the market of cryptocurrencies and joins the debate about the regulation of these financial innovations. • It argues that the appearance of cryptocurrencies was a response to market demand for more affordable and more inclusive banking. • It also argues that distributed ledger technology (DLT) which supports cryptocurrencies and has different characteristics than the technology used by traditional banking could help to create with cryptocurrencies a new, lower cost, more inclusive financial ecosystem separate from the traditional one. • The two ecosystems (traditional and new one) would form a larger two-tier financial ecosystem, which, overall would be more inclusive and more affordable. Also, it would be more effective in containing contagion and major economic disruption during future financial crises. • The current reliance on a single, ever growing, and immensely complex financial ecosystem is not sustainable longer term as systemic risks grow with the system and there are no mechanisms available to fully eliminate these risks. The costs of regulating the current market architecture are also excessively high.
The full-text of this article will be released for public view at the end of the publisher embargo - 2 years after publication.
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Yang, Chuang-Fang, and 楊創方. "Excitation System Model Parameters Validation Based on PSSE." Thesis, 2013. http://ndltd.ncl.edu.tw/handle/98505461983250419180.
Full textAbstract:
碩士義守大學
電機工程學系
101
Excitation System is composed of exciter and automatic voltage regulator, and by adjusting the field voltage of the synchronous machine, it then controls generator terminal voltage. Excitation system model shows the characteristics of excitation system by mathematics. So far, some excitation systems are too old to find the record of the parameters. Also, some synchronous generators have upgraded parts of their system, resulting in a large difference in its parameters. Therefore, the correctness of the excitation system parameters is questionable. Using incorrect parameters lead to an incorrect simulation result, so revalidation of the excitation system is crucial. This paper uses PSSE (Power System Simulator for Engineering), a simulation software with international credibility. Because of the built-in function not meeting the research requirement, GMB(Graphical Model Builder) self-made model is used to replace PSSE built-in model. In this paper, we observed the consistency of GMB self-made model and PSSE built-in model. The method of validation is to do the comparison of field tests data and simulated data. Step response test is the basis for excitation model parameters estimation. Then, we verified the estimation parameters by using load-shedding (Mvar) test.
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Yang, Jia-Ren, and 楊嘉仁. "Automatic Characteristic Parameters Identification System for Photovoltaic Modules." Thesis, 2008. http://ndltd.ncl.edu.tw/handle/00635025411794817803.
Full textAbstract:
碩士龍華科技大學
電機工程研究所
96
Field-test of PV module’s performance is expensive, time consuming and depends deeply on the dominant weather condition. Accurate knowledge of the output characteristics of PV modules is necessary for the design and derivation of high-performance PV inverter and maximum power point tracking (MPPT) algorithm in PV system. A computer-aided automated measurement and verification system for characterizing the solar modules is proposed in this thesis to create the environment factor model (EFM) of PV modules as functions of incident irradiances, cell temperatures, and module tilt-and-azimuth angles. The hardware and software configuration of the system are described. Test results of a commercial panel (HIP-210NHE1) are included to evaluate the proposed system availability and effectiveness.
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Hsu, Wei-Chih, and 徐維志. "Development of a LED Luminous Parameters Measurement System." Thesis, 2012. http://ndltd.ncl.edu.tw/handle/wb993s.
Full textAbstract:
碩士國立臺灣科技大學
機械工程系
100
The objective of this thesis is to develop a LED luminous parameters measurement system, including the main part of a three-dimensional intensity measurement of LED luminescence, and the other part of a self-made spectrometer to do the analysis of the LED spectrum. This system utilizes mainly the LabVIEW virtual control software to do the system integration, through a combination of motors, motion control card and the terminal block to achieve the mechanisms that are necessary for motion control and position of three-dimensional luminous intensity measurement. The phototransistors and a CCD linear sensor are connected to a data acquisition card, to measure the three-dimensional luminous intensity and the spectrum of a LED, respectively. A set of human-machine has been developed software to form a set of LED luminous parameter measurement system.
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Tseng, Hung-Chin, and 曾泓嘉. "Research for parameters of E-beam evaporator system." Thesis, 2008. http://ndltd.ncl.edu.tw/handle/fuup4k.
Full textAbstract:
碩士國立虎尾科技大學
光電與材料科技研究所
96
Photonic and semiconductor industry are grown up flourishing in Taiwan, and E-beam evaporator has been used generally in all of relative field. Now, it become major equipment in Taiwan sunrise and high technology industry, and establishes its necessity there. Due to the industry requesting and requirement of process, throughput and deposition rate become more and more important in the future in order to match this issue, the higher power supply has been made for marketing requirement. But, there has no paper or document studying for maximum utility rate in the same capacity. The paper will focus on evaporator system for optimized parameter of deposition rate improving. We will use different brand of e-gun system in comprehensive analysis of metal (Al) and TCO (ITO) deposition, study the relativity of process deposition and parameter. And programmable sweep method and variable of crucible cooling water temperature also will be observed in this experiment. Looking for an optimized process condition, and make a comparison between the E-beam sweep methods. After experiment researching, we got the optimized parameter of metal and oxide evaporation application in three different brand of evaporator. In metal deposition, current and deposition is direct proportion. Beside that, Max. Current generation is between 930mA to 860mA, and deposition rate is from 28 to 20.5 Å/SEC. The experiment, first priority, is deposition rate stability keeping while making nonmetal film in order to reach the purpose of increasing target utilizing rate and keep the deposition rate upon 80%.
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Jhan, Bo-Chen, and 詹博丞. "Parameters of levitated objects in acoustic levitation system." Thesis, 2019. http://ndltd.ncl.edu.tw/handle/7qjpjz.
Full textAbstract:
碩士國立臺灣大學
機械工程學研究所
107
In this research, we established a non-resonant acoustic levitation system. We also discussed the effects of thicknesses, areas, densities, and shapes of planar objects on the difficulty of levitation. The experimental results show that sound pressure required to levitate the objects increases as their thicknesses or densities increase. As for the objects’ areas, the difficulty of levitation decreases with the increasing areas of the objects when the areas are lower than a critical value. Otherwise, the larger the areas of the objects are, the harder they are to be levitated. We defined a shape factor by results of sound field measurement. This factor can describe the extent of acoustic radiation forces that the objects received in the same sound field. Then we got the area formula and the shape formula by curve fitting. However, the prediction of the shape formula is contrary to the experimental data for the objects of low areas. We thought it is because the sound field inside the levitator was not axisymmetric and the centroids of the levitated objects were not located on the central axis of the levitator. Finally, by the area formula and the shape formula, we predicted the sound pressure required to levitate a sphere or an ellipsoid of arbitrary density.
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Ye, Jing-Jhao, and 葉青釗. "A Pain Ranking System Based on Physiological Parameters." Thesis, 2017. http://ndltd.ncl.edu.tw/handle/47831422752610821890.
Full textAbstract:
博士中原大學
生物醫學工程研究所
105
Pain is a prominent problem and has proved to be increasingly important. In 2001, the Joint Commission on Accreditation of Healthcare Organizations (JCAHO) declared “pain assessment” to be a new assessment program, and emphasized that “pain” should be considered as one of the five vital signs along with blood pressure, respiration, pulse, and body temperature, and that it must be monitored and recorded. The World Health Organization (WHO) advanced a three-step ladder for pain therapy in 1990. In recent years, pain control is being considered as a basic right, and the awareness of pain care has gradually risen among the global medical community, and has even become an evaluation project. A nociception level index (NoL) system has been developed to continuously monitor the nociceptive response in patients under anesthesia. However, as NoL system is only applicable to patients under anesthesia, it cannot be used to evaluate pain in conscious patients. In the clinical setting, subjective scale or questionnaires are the major methods of pain assessment for general pain patients. These assessment methods are only suitable for recording the status of the patient’s pain at a particular moment. They cannot monitor the pain continuously, and may lack accuracy if the patient cannot understand the questionnaire or if the physician and patient have different subjective awareness. Therefore, the accurate assessment and monitor of pain is an important prerequisite for pain care. According to pain physiology, pain affects the sympathetic (SNS) and parasympathetic (PNS) nervous activities, and is reflected in the body’s physiological performance, such as heartbeat, blood pressure, breathing, sweat gland secretion, etc. Moreover, previous studies have pointed out that the heart rate variability (HRV) may be used to assess the neurological activity of SNS and PNS, which could be related with pain. Photoplethysmography (PPG) can detect nociceptive stimuli and analyze the pulse rate variability (PRV) which may be related to HRV. In addition, R. Treister et al. indicated that a combination of multiple physiological parameters could be more effective in assessing pain. Therefore, the purpose of this study was to establish a real-time physiological system to reflect variability in pain intensity that could be used as a pain monitoring. We selected suitable parameters that could accurately reflect fluctuations in pain form the HRV and PPG parameters, and used them to create a real-time pain-monitoring system. In 2013, a prototype system based on electrocardiogram (ECG) and PPG signal measurement was developed, and analyzed with LabVIEW. We collaborated with the Taipei Municipal Wanfang Hospital and the Ten-Chen Medical Group to collect data on patients with chronic pain, and compared these parameters between different pain intensities (between pre- and post-pain therapy). Additionally, an acute pain stimulation system was developed for testing healthy volunteers to find parameters that could indicate pain production and relief. We also suggested that the real-time analysis system may be more convenient if HRV parameters were replaced by PRV for pain monitoring. Therefore, we also explored the correlation between PRV and HRV. The results showed that the heart rate (HR), R-R interval (RRI), high-frequency spectrum (HF), and low-frequency spectrum (LF) of HRV had significant and opposite changes when pain was induced and relieved. The PRV parameters showed a high correlation with the HRV parameters; however, in both the pain-producing and relief states, the change of PPG parameters had the same trend. Based on above results, a real-time analysis system was established using a micro-control system (Raspberry Pi 3) along with a micro-LED sensing element (MAX 30101) to calculate PRV parameters (HR, PPI, HF, and LF) using the Python 2.7. We verified the programing of our real-time analysis system using the time domain of HRV calculation in our prototype system and the built-in FFT in MATLAB. Verification results confirmed that the system could accurately calculate the PRV parameters every of 30 sec. Therefore, continuous PRV parameter analysis can be used to reflect changes in pain intensity of patients with consciousness. We expect that the production of this system will enable real-time pain monitoring in clinical settings, thus helping physicians to assess pain more effectively.
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Fan, Chin-Yu, and 范今瑀. "Optimization of Operating Parameters for Stripper Recycle System." Thesis, 2017. http://ndltd.ncl.edu.tw/handle/59699603733174246425.
Full textAbstract:
碩士國立中興大學
化學工程學系所
105
The purpose of this research is to find out the major controllable factors for the Stripper Recycle System of an opto-electronic fab. According to the result of the full factorial experiments, the optimization of operating can be estimated. The experiments included parameter adjustment as well as the cost-effectiveness analysis. The results pointed out that flow rate of feed, steam pressure, rotation speed are the major controllable factors. Based on Thin Film Evaporator of SRS, the results of the eighteen groups of experiments revealed that the significance of influence is in the order of rotation speed＞steam pressure＞feed flow. As for the full factorial experiment, the optimal values of controllable factors are feed flow kept at 160 L/hr, steam pressure kept at 5 kg/cm2 and rotation speed kept at 50rpm. It has the cost-effectiveness of increasing stripper recycle rate by 1.55%, decreasing waste production rate by 19.46 ton/yr and saving the stripper purchase cost of NTD$1,322,600.
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Huang, Chia-Te, and 黃家德. "The Parameters Monitoring System of Rubber Vulcanization Equipment." Thesis, 2014. http://ndltd.ncl.edu.tw/handle/22389959355381828369.
Full textAbstract:
碩士國立雲林科技大學
電機工程系
102
This thesis presents a design and implementation of extending current equipment to gather and report temperature-related readings of vulcanizing machines in operation to backend centers whereby the administrative staff can instantly know the working conditions of machines online. The collection of such information is of significant use to enable the factory to achieve automation. The environment under consideration is a workplace of twenty vulcanizing machines in a production line at Cheng Shin Rubber Ind. Co., Ltd. The model of vulcanizing machines is OC-704. Presently, an apparatus named temperature-pressure gather is tasked to collect operational data from twenty machines and output these data onto record paper. Current workflow tends to waste resources and raise production costs, because operators can hardly know the occurrence of errors or exceptional events in time, at expense of more troubleshooting and maintenance. Thanks to the convenience and accessibility of network technology, we use the human-machine interface to record working time, temperature and pressure readings of machines and then transmit these records to Pro-server through the network. The introduction of this new mechanism can efficiently lower the damage or productivity loss caused by machine malfunctions. In this light, we propose to empower the machine with an additional PLC (Programmable Logic Controller) module and an associated converter. This thesis elaborates on how we modify the human-machine interface to achieve the designated functions over networks. This thesis discusses an example case of setting the platform balance as well, to explain how machines are interacted via PLC with the Management Information department that supports programs to record the collected readings in databases and show captured results on intranet websites online. Our development also reports error messages with warning signals in the human-machine interface and on operators’ consoles. Therefore, our mechanism can serve monitoring purposes. Additionally, the operator can download operational schedules and working parameters to reduce the damages or costs out of manual setting errors In advanced manufacturing, barcode can be used to as an identity of products. The operator can use it to identify the item and its associated production profiles. Accordingly, when operators record temperature and pressure data, they can also set the barcode in the human-machine interface with some integrated program. If any flawed products are found by customers in the future, operators can easily trace back the original manufacturing process, deal with problems, or revise production procedures, so as to improve products quality system-wide.
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Zhou, Jian-hong, and 周建宏. "Sliding Mode Control System and Optimal Parameters Design." Thesis, 2011. http://ndltd.ncl.edu.tw/handle/00920161104884063144.
Full textAbstract:
碩士逢甲大學
化學工程學所
99
This research designs sliding mode controller and optimize parameters of the controller. Due to the advantages of fast response, good transient performance, insensitiveness to the matching parameter variations and external disturbances, the sliding mode controller has a good ability to handle chemical processes. This research will be divided three parts and the sliding mode control technology, applies in FOPDT and in the integral chemical procedure. In the first part, i will design the sliding mode controller in two different process, FOPDT and integral chemical procedure. In the second part, i will use an enlargement parameters in continuous part and an attenuated parameters in discontinuous part to solve the problem which is chattering. In the third part, i will use real code genetic algorithm(RCGA) to design that is optimize parameters of the controller. From examples of chemical engineering, the simulation proves that my way can attenuate the chattering.
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Chen, Wei-Chi, and 陳韋圻. "Automatic Parameters Identification of Groundwater Model using Expert System." Thesis, 2008. http://ndltd.ncl.edu.tw/handle/91961603798405589532.
Full textAbstract:
碩士國立交通大學
土木工程系所
97
Conventionally, parameters identification of groundwater model can be classified into manual parameters identification and automatic parameters identification using optimization method. Parameter searching in manual parameters identification requires heavily interaction with the modeler. Therefore, the identified parameters value is interpretable by the modeler. However, manual method is a complicated and time-consuming work and requires groundwater modeling practice and parameters identification experiences to performing the task. Optimization-based identification is more efficient and convenient comparing to the manual one. Nevertheless, the parameters search in the optimization approach can not directly interactive with modeler and one can only examine the final results. Moreover, because of the simplification of the optimization model, the parameters value obtained by optimization-based identification may not be feasible in reality. In light of previous discussion, this study integrates a rule-based expert system and a groundwater simulation model, MODFLOW 96, to develop an automatic groundwater parameters identification system. The hydraulic conductivity and specific yield are the parameters to be calibrated in the system. Since the parameter value is automatic searched according the rules that are specified by modeler, it is efficient and the identified parameters value is more interpretable than that by optimized based approach. Beside, since the rules are easy to modify and adding, the system is flexible and can accumulate the expertise experiences. Several hypothesized cases were used to examine the system validity and capability. The result shows a good agreement between the identified and given parameter values and also demonstrates a great potential for extending the system to a fully function and practical field application system.
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Ho, Wei-Po, and 何維柏. "Multi Parameters Sensing Circuit Design for Electronic Tongue System." Thesis, 2010. http://ndltd.ncl.edu.tw/handle/46779040658371609190.
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碩士中原大學
電子工程研究所
98
In recent years, the environment and quality of life has become an important issue. Environmental and livelihood related water quality monitoring has become a topic of interest for research. The target is to be able to integrate a sensor that detects a variety of ion with wireless transmission to form a long term monitoring system. This study prepared a sodium sensor based on ion-sensitive field-effect transistor combined with a commercial differential electrode to achieve multi parameters sensing circuit. The system is an integrated circuit design of a readout circuit for hydrogen ion, sodium ion, and temperature parameters. This research includes design of an ion-selective electrode readout circuit, bandgap reference voltage circuit, a low dropout linear regulator. The system was designed using the TSMC 0.35um 2P4M Mixed-Signal 3.3/5V process technology. Experimental results shows that the sodium ion sensor, at pNa = 1 ~ 4, has a sensitivity of -58.3mV/pNa. The linearity is at 99.5% and the detection is limited at pNa = 3.6 (5.7ppm). It has a wide sensing range, good linearity and good reproducibility that is suitable for water quality monitoring system. The readout circuit part has achieved readout for the hydrogen ions, sodium ions, temperature and many other parameters.
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Tu, Cheng-Liang, and 涂政良. "Computer Aided Characteristic Parameters Identification System for Industrial Motors." Thesis, 2009. http://ndltd.ncl.edu.tw/handle/11082894619854912814.
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黃柏峰. "Development of a Digital Cycling Posture Parameters Measurement System." Thesis, 2011. http://ndltd.ncl.edu.tw/handle/50600763233810221774.
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碩士建國科技大學
自動化工程系暨機電光系統研究所
99
A group of people who ardently like riding bike vigorously advocacy that biking sport is healthy for body and make more people join this fashion, leisurable and healthy sport. They often discuss the problem about comfortable, right riding posture and hurt to ones body in blog or provide professional knowledge on web site. Particularly, incorrect riding posture for long time often cause serious hurt to ones’joint and spine. Therefore, this paper aims at developing a digital cycling posture parameters measurement system capable of measuring the head tube height, the head tube angle, the stand tube height, the stand tube angle and the adjustable distance in the frame of a bike. Based on the computer measurement platform consists of PC and Labview software, the study integrates six axis driven by six stepping motors, load cells, amplifier and self-designed frame and employs Labview software to design control program and human interface, With the help of the digital cycling posture parameters measurement system, the cyclist can decide appropriate cycling posture parameters and choose suitable bicycle frame, meanwhile, the cycling injury can be prevent and the cycling fitness can be promoted.