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1
Vaško, Martin. „Systém pro podporu sledování a řízení IT dle DCMM“. Master's thesis, Vysoké učení technické v Brně. Fakulta informačních technologií, 2021. http://www.nusl.cz/ntk/nusl-445477.
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Developeri v IT tíme vidia IT manažment ako vedúcich ich oddelenia a IT projektov. Úzkoprsosť manažmentu spoločnosti je často videná ako problém v riadení IT. Avšak v DCMM terminológii sa od vedúcich manažmentu vyžaduje rovnocenná diskusia medzi oboma účastníkmi. Pri rovnocennej diskusii to má za pozitívny dopad na pracovníkov IT a riešenia IT projektu, než pri nerovnocennej komunikácií. Navrhovaný systém umožňuje uživateľom (IT manažérom) manažovať a zobrazovať zdroje IT oddelenia, aktuálny stav projektu a aktuálny pohľad na manažment IT v DCMM perspektíve. Hlavné zameranie je kladené na extrakciu záznamov z rôznych nástrojov, ktoré sú spojené do príbehov. Tieto príbehy vytvárajú reťazec navzájom súvisiacich krokov, ktoré majú buď pozitívny alebo negatívny dopad na podnikanie. DCMM metriky boli realizované pre pomoc IT manažmentu aby sa vďaka ním vedel rozhodnúť ísť v smere nových myšlienok alebo sa držať ďaleko od inovácií. Pri použití nástroja, je manažmentu podniku ľahšie určiť, či DCMM pomôže danej spoločnosti byť inovatívna alebo či sa má rozhodnúť zostať v užívaní aktuálneho manažérskeho modelu. Na základe aktuálnych a predošlých udalostí odohraných vo firme, ktoré sa zobrazia je nutné vykonať manažérsku analýzu pre zistenie nových vedomostí.
2
Zhu, Lianyi. „DCMS, a digital certificate management system“. Thesis, National Library of Canada = Bibliothèque nationale du Canada, 1998. http://www.collectionscanada.ca/obj/s4/f2/dsk2/ftp01/MQ35863.pdf.
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Kraus, Edwin. „Interworking methodologies for DCOM and CORBA“. [Johnson City, Tenn. : East Tennessee State University], 2003. http://etd-submit.etsu.edu/etd/theses/available/etd-1104103-205221/unrestricted/KrausE110503b.pdf.
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Thesis (M.S.)--East Tennessee State University, 2003.Title from electronic submission form. ETSU ETD database URN: etd-1104103-205221. Includes bibliographical references. Also available via Internet at the UMI web site.
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Roque, Vitor Manuel Gomes. „Arquitecturas distribuídas cliente/servidor : CORBA, DCOM e JavaRMI“. Master's thesis, Universidade de Aveiro, 1999. http://hdl.handle.net/10773/13036.
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Mestrado em Engenharia Electrónica e TelecomunicaçõesNa era das comunicações e da multimédia, as Arquitecturas Distribuídas Cliente/Servidor têm vindo a ganhar cada vez mais representatividade no panorama actual do desenvolvimento de aplicações. Verbas avultadas têm sido investidas pelas empresas desenvolventes deste tipo de tecnologia de forma a melhorar o mais possível e no menor espaço de tempo as suas plataformas com o intuito de ganhar a maior representatividade possível na área da computação distribuída. A presente dissertação centra-se precisamente na análise de três das mais importantes arquitecturas distribuídas cliente/servidor disponíveis actualmente no mercado, nomeadamente as arquitecturas CORBA, DCOM e JavaRMI. A escolha destas arquitecturas não foi aleatória e teve como base a sua importância no mercado actual. A primeira - a CORBA - por ser fomentada pelo OMG, organização internacional formada por mais de 800 membros, a segunda - o DCOM - pela importância da empresa que a desenvolve, a Microsoft, devido ao peso desta no mundo da informática e a terceira - a JavaRMI - pela crescente popularidade da linguagem Java. Nesta análise são focados os pontos mais importantes de cada uma das arquitecturas e como é que estes pontos podem ser factores decisivos na escolha das plataformas por parte das organizações. Neste sentido, o segundo capítulo desta dissertação faz uma retrospectiva de tecnologias até se atingir o estado actual, as arquitecturas distribuídas cliente/servidor. Nos terceiro, quarto e quinto capítulos são abordados de forma sucinta as três arquitecturas CORBA, DCOM e JavaRMI respectivamente. No sexto capítulo é apresentada uma comparação das funcionalidades das três arquitecturas no que respeita a: Interoperabilidade. Fiabilidade. Maturidade da Plataforma. Finalmente no sétimo capítulo são apresentadas algumas das conclusões retiradas ao longo desta dissertação.
In the communication and multimedia era, Distributed Client/Server Architectures has come to have more and more representation in the current panorama of application development. Large amounts have been invested by companies that develop this kind of technology in order to improve their platforms as quickly and as much as possible with the objective of gaining as much representation as possible in the area of distributed computation. This dissertation is focussed precisely on the analysis of three of the largest distributed client/server architectures currently available on the market, namely CORBA, DCOM, and JavaRMI. The choice of these architectures was not random but, rather, based on their significance on the current market: the first, CORBA, for being supported by the OMG, an international organization of more than 800 members; the second, DCOM, for the significance of the company that is developing it, Microsoft, due to its weight in the computer world; and the third, JavaRMI, for the increasing popularity of Java language. In this analysis, the most important points of each of the architectures are focussed on, exploring how each of these points can be decisive factors in the choice of platforms on the part of organizations. Accordingly, the second chapter of this dissertation gives a retrospective view of technology up to the current state, distributed client/server architectures. In the third, fourth, and fifth chapters, the three architectures, CORBA, DCOM and JavaRMI, respectively, are dealt with succinctly. In the sixth chapter, a comparison of the functionality of the three architectures is presented with respect to: Interoperability. Reliability. Platform Maturity. Finally, in the seventh chapter, some of the conclusions drawn throughout the dissertation are presented.
5
Childs, Edward William. „The roles of the locust DCMD in collision detection“. Thesis, University of Newcastle Upon Tyne, 1999. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.300191.
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Sadowski, Grzegorz. „Multicomponent TiNbCrAl nitride films produced by DCMS and HiPIMS“. Thesis, Linköpings universitet, Tunnfilmsfysik, 2021. http://urn.kb.se/resolve?urn=urn:nbn:se:liu:diva-174701.
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High entropy alloys (HEAs) are made of at least five principal elements in near-equimolar proportions. The vast number of possible alloys and unconventional combinations of properties are the main benefits of HEAs. Ti, Nb, Cr, Al and N were chosen in order to create a hard, corrosion resistant coating with good thermal stability. TiNbCrAl multicomponent nitride thin films with Ti content between 0 to 14.4 at.% were deposited using multi-magnetron reactive high power impulse magnetron sputtering (R-HiPIMS) to investigate the feasibility of this method and to study how the Ti content affects the properties of the film. The samples deposited using reactive direct current magnetron sputtering (R-DCMS) were used as benchmarks. The settings required for near-equimolar composition were fixed, with Ti magnetron power as the only variable. Substrate was grounded and not intentionally heated. The composition of HiPIMS samples was more stable while the DCMS samples had significant fluctuations in Al and N content when varying the Ti target power, and were understoichiometric in nitrogen, (T iCrN bAl)1N1−δ, due to low degree of ionization of N. All crystalline samples had NaCl-type fcc structure. Crystalline DCMS samples were (111) textured, while the higher ionization characteristic for HiPIMS resulted in samples with competitive growth between two growth directions. The energetic particle bombardment caused the columnar structure of the film to be denser and less jagged, while DCMS samples containing Ti were significantly more porous. Denser, harder and stiffer films with significantly higher compressive stress were produced with HiPIMS. The hardness and stiffness were almost linearly dependent on Ti content, with density slightly decreasing as the Ti content increased. Higher Ti content increased the rate of corrosion of the films.
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Raza, Mohsin. „Synthesis of hydrogenated amorphous carbon (a-C:H) thin films by HiPIMS-based processes“. Thesis, Linköpings universitet, Plasma och beläggningsfysik, 2012. http://urn.kb.se/resolve?urn=urn:nbn:se:liu:diva-84320.
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This thesis explores the feasibility of high power impulse magnetron sputtering (HiPIMS) to synthesize hydrogenated amorphous carbon (a-C:H) thin films in Ar-hydrocarbon ambient and the relationship between process parameters, gas phase composition and film properties. To this purpose a stable process based on HiPIMS and direct current magnetron sputtering (DCMS) has been developed. Four series of amorphous carbon thin films were deposited by hybrid HiPIMS-DCMS and pure DCMS processes at 15 mTorr pressure using different Ar-acetylene compositions and a substrate bias from 0 to -350 V. The effect of Ar-acetylene compositions and depositions processes on the film properties was investigated by characterizing the films using scanning electron microscopy (SEM), x-ray reflectometry (XRR), nanoindentation and elastic recoil detection analysis (ERDA). Moreover the process characterization was done by recording the optical emission spectrum and current and voltage waveforms of the hybrid HiPIMS-DCMS discharge. The characterization of the films revealed that the hybrid HiPIMS-DCMS process is a powerful tool for controlling the amorphous carbon film properties such as density, deposition rate, hardness and hydrogen content.
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Berrada, Meryem. „DCMS: A Data Analytics and Management System for Molecular Simulation“. Scholar Commons, 2015. https://scholarcommons.usf.edu/etd/5453.
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Despite the fact that Molecular Simulation systems represent a major research tool in multiple scientific and engineering fields, there is still a lack of systems for effective data management and fast data retrieval and processing. This is mainly due to the nature of MS which generate a very large amount of data - a system usually encompass millions of data information, and one query usually runs for tens of thousands of time frames. For this purpose, we designed and developed a new application, DCMS (A data Analytics and Management System for molecular Simulation), that intends to speed up the process of new discovery in the medical/physics fields.
DCMS stores simulation data in a database; and provides users with a user-friendly interface to upload, retrieve, query, and analyze MS data without having to deal with any raw data. In addition, we also created a new indexing scheme, the Time-Parameterized Spatial (TPS) tree, to accelerate query processing through indexes that take advantage of the locality relationships between atoms. The tree was implemented directly inside the PostgreSQL kernel, on top of the SP-GiST platform. Along with this new tree, two new data types were also defined, as well as new algorithms for five data points' retrieval queries.
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Yvert, Gaëtan. „Modélisation de l'organisation fonctionnelle de la lecture chez le sujet sain : Etude en EEG-HR par reconstruction de sources et modèles causaux dynamiques. Applications aux patients épileptiques“. Thesis, Grenoble, 2012. http://www.theses.fr/2012GRENS044/document.
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L'écriture et donc a fortiori la lecture est une invention trop récente pour que le substrat neuronal sous tendant ce processus cognitif ait évolué pour se spécialiser dans la reconnaissance visuelle des mots. Ainsi les régions fonctionnelles de la lecture repose à la fois sur les aires corticales dédiées au langage et à la reconnaissance visuelle des objets. Cependant, l'identification complète nécessite au delà du décryptage orthographique, le décodage phonologique ainsi que la récupération de la sémantique. De très nombreuses études en neuroimagerie et en particulier l'IRM se sont intéressées à la localisation des différentes aires fonctionnelles sous tendant ces différentes taches cognitives. Cependant la faible résolution temporelle de l'IRM n'a pas permis de mettre en évidence la dynamique d'intégration au sein du réseau fonctionnel de la lecture. Les enregistrements électrophysiologiques, comme l'EEG, permettent la mise en évidence de la dynamique neuronale grâce à son excellente résolution temporelle. Cependant, la localisation des aires corticales ayant générés les courants de scalp est un problème méthodologique très complexe. Depuis une dizaine d'année, de nombreuses avancées majeures ont été effectuées dans la localisation de source en utilisant des méthodologies nouvelles permettant ainsi de mettre en évidence à la fois les régions fonctionnelles impliquées dans le traitement cognitif ainsi que la dynamique temporelle d'intégration au sein du réseau. Par ailleurs, d'une vision localisationniste, les recherches actuelles tendent vers une vision hodotopique où la fonction d'une région dépend plus de ses connections avec les autres régions du réseau que de sa localisation précise. De nouvelles méthodologies comme les modèles causaux dynamiques permettent de mettre en évidence la structure du réseau et de son fonctionnement. L'objectif de cette thèse a été d'utiliser les derniers outils méthodologiques mis au point afin non seulement de mettre en évidence le réseau de la reconnaissance visuelle des mots mais aussi de proposer un modèle théorique de l'intégration fonctionnelle. En particulier, nous avons mis en évidence l'importance des connexions feedback sur le traitement bottom up de la reconnaissance visuelle des mots à l'instar des objets. Par ailleurs, nous avons appliqué ces méthodologies chez le patient épileptique afin de mettre en évidence les réorganisations fonctionnelles induites par la présence d'un foyer au niveau des régions temporales gaucheWriting and then a fortiori reading is a too recent invention for evolution to develop a specialized neuronal substrate sustaining the visual word form recognition. Thereby functional region underlying reading process rest on cortical area dedicate to language and visual recognition of objects. However, complete identification of a word requires beyond the orthographic decryption, phonological decoding and semantic recovery. Numerous neuroimaging studies and in particular with fMRI have tried to localize the functional regions sustaining these different cognitive processes. Nonetheless, the weak temporal resolution of fMRI do not allowed revealing the dynamic of integration within the reading network. Electrophysiological recording as EEG permit to show the neuronal dynamic thanks to its excellent temporal resolution. However, localization of the cortical area having generate the scalp electrical field is a complex methodological issue. Since a decade, numerous breakthroughs in methodology allow not only to localize functional region but also the temporal dynamic of their interaction. Moreover, from a localisationnist point of view, current research have adopted an hodotopic vision supposing that the function of a region is more depend of its connectivity with the other region of the network than of its precise location. New methodologies as dynamic causal modeling permit to show the network structure and its dynamic integration. The goal of this thesis has been to use latest methodological development to reveal not only the network of the word recognition, but also to propose a functional model of the integration of the visual stimuli within this network. In particular, we have shown the importance of feedback connection on bottom up processing in word recognition as it has been shown for objects recognition. In addition, we have applied those methodologies to epileptic patients to reveal the influence of a left temporal lesion on the functional reorganization of the reading network
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Khalid, Shehla. „Towards Data Governance for International Dementia Care Mapping (DCM). A Study Proposing DCM Data Management through a Data Warehousing Approach“. Thesis, University of Bradford, 2010. http://hdl.handle.net/10454/5226.
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Information Technology (IT) plays a vital role in improving health care systems by enhancing the quality, efficiency, safety, security, collaboration and informing decision making. Dementia, a decline in mental ability which affects memory, concentration and perception, is a key issue in health and social care, given the current context of an aging population. The quality of dementia care is noted as an international area of concern.
Dementia Care Mapping (DCM) is a systematic observational framework for assessing and improving dementia care quality. DCM has been used as both a research and practice development tool internationally. However, despite the success of DCM and the annual generation of a huge amount of data on dementia care quality, it lacks a governance framework, based on modern IT solutions for data management, such a framework would provide the organisations using DCM a systematic way of storing, retrieving and comparing data over time, to monitor progress or trends in care quality.
Data Governance (DG) refers to the implications of policies and accountabilities to data management in an organisation. The data management procedure includes availability, usability, quality, integrity, and security of the organisation data according to their users and requirements.
This novel multidisciplinary study proposes a comprehensive solution for governing the DCM data by introducing a data management framework based on a data warehousing approach. Original contributions have been made through the design and development of a data management framework, describing the DCM international database design and DCM data warehouse architecture. These data repositories will provide the acquisition and storage solutions for DCM data. The designed DCM data warehouse facilitates various analytical applications to be applied for multidimensional analysis. Different queries are applied to demonstrate the DCM data warehouse functionality.
A case study is also presented to explain the clustering technique applied to the DCM data. The performance of the DCM data governance framework is demonstrated in this case study related to data clustering results. Results are encouraging and open up discussion for further analysis.
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Rohde, Maria [Verfasser]. „T-Zell-Rezeptor-Vβ-(TRBV)-Dominanz bei der inflammatorischen Kardiomyopathie (DCMi) / Maria Rohde“. Berlin : Freie Universität Berlin, 2009. http://d-nb.info/1023781670/34.
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Machala, Petr. „Optické snímání a analýza bytových měřidel“. Master's thesis, Vysoké učení technické v Brně. Fakulta elektrotechniky a komunikačních technologií, 2015. http://www.nusl.cz/ntk/nusl-221254.
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The topic of this master’s thesis is a study and solution of problems regarding an optical recognition and home metering analysis for the following recording and statistical processing. For this required application a STMicroelectronics 32F429IDISCOVERY development board with ARM Cortex-M4 microcontroller and OmniVision OV7670 camera module was used, where a required firmware was implemented. This thesis therefore generally represents a complex solution from acquisition of images by used camera module to final analysis and data processing and building a functional prototype of the proposed sensor system.
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Mojtahedi, Sina. „Analyzing Efective Connectivity Of Brain Using Fmri Data : Dcm And Ppi“. Master's thesis, METU, 2013. http://etd.lib.metu.edu.tr/upload/12615496/index.pdf.
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In neuroscience and biomedical engineering fields, one of the most important issues nowadays is finding a relationship between different brain regions when it is stimulated. Connectivity is an important research area in neuroscience which tries to determine the relationship between different brain region when the brain is stimulated externally or internally. Three main type of connectivity are discussed in this field: Anatomical, Functional and Effective connectivity. Importance of effective connectivity is its ability to detect brain disorders in early stages. Some brain disorders are Schizophrenia, MS and Major Depression disease. Comparing the effective connectivity between a healthy and unhealthy brain will help to diagnose brain disorder. In this master study, two methods named Dynamic Causal Modeling (DCM) and Psychophysiological Interaction (PPI) are used to compare effective connectivity and neuronal activity between different regions of brain when there are three different stimulations. Since the neural activity is latent in fMRI data, there is a need to a model which is able to transfer data from neuronal level to a visible data like Blood-Oxygen level dependent (BOLD) signal. DCM uses a haemodynamic balloon model (HD) to represent this data transfer. The hemodynamic model must be so that the parameters of neural and BOLD signal be the same. It should be noted that what is looked for is not the BOLD signal but the neuronal activity. In this study, as the first step, we did preprocessing of MR images and after ROI`s are created using the program MARSBAR. Ten ROIs, which are thought to have connections between them are selected by considering the stimulations used in the experiments in obtaining the data used in this thesis. The data used contains fMRI images of 11 healthy subjects. Stimulations of experiment are applied to images got from group analysis of 11 healthy subjects. These Stimulations are then used in preparing the design matrix and the parameters related to DCM. These parameters are the values related to connection matrices defining bilinear dynamic model on ROI. Bayesian method is used to select best model between all these models. Another method of PPI is also applied to analyze effective connectivity between 10 ROIs. This method considers two issues of physiological and psychological effects. Like DCM, the preprocessing steps and ROI selection is done for PPI and hemodynamic model is designed for this method. Neural and hemodynamic responses of ROIs are compared using this method.
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Pepper, Michael. „BI-DIRECTIONAL DCM DC-TO-DC CONVERTER FOR HYBRID ELECTRIC VEHICLES“. Master's thesis, University of Central Florida, 2008. http://digital.library.ucf.edu/cdm/ref/collection/ETD/id/2672.
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With the recent revival of the hybrid vehicle much advancement in power management has been made. The most popular hybrid vehicle, the hybrid electric vehicle, has many topologies developed to realize this hybrid vehicle. From these topologies, as sub set was created to define a particular group of vehicles where the converter discussed in this thesis has the most advantage. This sub set is defined by two electric sources of power coupled together at a common bus. This set up presents many unique operating conditions which can be handled seamlessly by the DC-to-DC converter when designed properly. The DC-to-DC converter discussed in this thesis is operated in Discontinuous Conduction Mode (DCM) of operation because of its unique advantages over the Continuous Conduction Mode (CCM) operated converter. The most relevant being the reduction of size of the magnetic components such as inductor, capacitor and transformers. However, the DC-to-DC converter operated in DCM does not have the inherent capability of bi-directional power flow. This problem can be overcome with a unique digital control technique developed here. The control is developed in a hierarchical fashion to separate the functions required for this sub set of hybrid electric vehicle topologies. This layered approach for the controller allows for the seamless integration of this converter into the vehicle. The first and lowest level of control includes a group of voltage and controller regulators. The average and small signal model of these controllers were developed here to be stable and have a relatively fast recovery time to handle the transient dynamics of the vehicle system. The second level of control commands and organizes the regulators from the first level of control to perform high level task that is more specific to the operation of the vehicle. This level of control is divided into three modes called hybrid boost, hybrid buck and electric vehicle mode. These modes are developed to handle the specific operating conditions found when the vehicle is operated in the specific mode. The third level of control is used to command the second level of control and is left opened via a communication area network (CAN) bus controller. This level of control is intended to come from the vehicle s system controller. Because the DC-to-DC converter is operated in DCM, this introduces added voltage ripple on the output voltage as well as higher current ripple demand from the input voltage. Since this is generally undesirable, the converter is split into three phases and properly interleaved. The interleaving operation is used to counteract the effects of the added voltage and current ripple. Finally, a level of protection is added to protect the converter and surrounding components from harm. All protection is designed and implemented digitally in DSP.M.S.E.E.
School of Electrical Engineering and Computer Science
Engineering and Computer Science
Electrical Engineering MSEE
15
Khan, M. (Md). „Impact of digital content marketing (DCM) on customers’ online purchasing behavior“. Master's thesis, University of Oulu, 2019. http://jultika.oulu.fi/Record/nbnfioulu-201905081642.
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Abstract. This study aims to understand how digital contents are acting as a motivating factor to influence on customers online purchasing behavior as well as online purchasing process. More clearly this study will understand and analyze the phenomenon closely on how digital contents are influencing customers into customers five stages of the online purchasing process.
The theoretical framework is formed during the study which is based on the findings of previous researches related to digital content marketing and online purchasing behavior.
The research is conducted on the qualitative method where semi-structured interview is applied for data collection. The target age group for data collection is 25 to 34 who purchase mostly electronic products from the online marketplace. The empirical analysis is done based on abductive reasoning approach.
The finding of the study shows that digital contents affect on customers online purchasing process. The research also found that the right structure and strategy should be applied to create and distribute digital content which engages customers towards digital contents and motivate them to rely on digital contents into the online purchasing decision-making process.
Finally, the study showed theoretical contributions, managerial implications, and suggestions for further research regarding digital contents.
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Carter, Matthew Edward. „Setting location priors using beamforming improves model comparison in MEG-DCM“. Thesis, Virginia Tech, 2014. http://hdl.handle.net/10919/50418.
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Modelling neuronal interactions using a directed network can be used to provide insight into
the activity of the brain during experimental tasks. Magnetoencephalography (MEG) allows
for the observation of the fast neuronal dynamics necessary to characterize the activity of
sources and their interactions. A network representation of these sources and their con-
nections can be formed by mapping them to nodes and their connection strengths to edge
weights. Dynamic Causal Modelling (DCM) presents a Bayesian framework to estimate the
parameters of these networks, as well as the ability to test hypotheses on the structure of
the network itself using Bayesian model comparison. DCM uses a neurologically-informed
representation of the active neural sources, which leads to an underdetermined system and
increased complexity in estimating the network parameters. This work shows that inform-
ing the MEG DCM source location with prior distributions defined using a MEG source
localization algorithm improves model selection accuracy. DCM inversion of a group of can-
didate models shows an enhanced ability to identify a ground-truth network structure when
source-localized prior means are used.Master of Science
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Santer, Roger D. „The role of the DCMD neuron in triggering emergency avoidance reactions in locusts and robots“. Thesis, University of Newcastle Upon Tyne, 2003. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.289095.
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Ducruet, Jean-Marc. „Contribution à l'étude du mécanisme d'action des herbicides inhibiteurs du photosystème II, de type DCMU“. Grenoble 2 : ANRT, 1986. http://catalogue.bnf.fr/ark:/12148/cb37597318n.
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Ducruet, Jean-Marc. „Contribution à l'étude du mécanisme d'action des herbicides inhibiteurs du photosystème II, de type DCMU“. Paris 11, 1986. http://www.theses.fr/1986PA112041.
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L'induction de fluorescence chlorophyllienne a été utilisée pour le dosage d'herbicide du type DCMU dans des feuilles entières. Les conditions de la mesure et l'analyse des cinétiques sont décrites. Cette technique a été également appliquée à l'étude des effets de chocs thermiques de quelques minutes entre 35°C et 50°C sur des feuilles de plantes résistantes et sensibles aux triazines. Pendant l'échauffement, une inhibition de type DCMU apparaît uniquement chez les résistants et montre que la mutation altère la structure de la protéine-cible B. Après l'échauffement, des modifications irréversibles complexes sont observées chez les résistants et les conséquences agronomiques possibles sont envisagées. L'analyse comparée des relations structure-activité chez les résistants et les sensibles aux triazines montre que la distinction entre inhibiteurs de type urées-amides et de type triazines n'est pas absolue. Les motifs -NH-CO- et -NH-CN- de ces deux groupes pourraient donc jouer un rôle homologue. Ils sont capables de former, notamment, une double liaison hydrogène pouvant rendre compte de l'énergie d'interaction au niveau du site d'action. Des différences entre les propriétés d'interaction de ces deux motifs apportent des éléments d'explication du phénomène de la résistance. Des modèles d'interaction des inhibiteurs et des quinones avec un site, éventuellement identique, de la protéine-cible B sont proposés à titre exploratoireChlorophyll fluorescence induction was used to titrate DCMU-like herbicides in whale leaves. The experimental conditions and the analysis of kinetics are described. This method was also applied in studying the effects of thermal shocks (35°C to 50°C for several minutes) on leaves of triazineresistant and -susceptible plants. During heating, a DCMU-like inhibition of electron transfer was observed in the resistant leaves, which shows that the mutation changes the shape of the B target-protein. After heating, complex irreversible damages were observed in resistant leaves and the possible agricultural consequences are considered. The comparative analysis of structure-activity relationships in triazineresistant and -susceptible chloroplasts demonstrated that there is not a clear cut difference in the behavior of urea-amide and triazine inhibitors towards resistance. The -NH-CO- and -NH-CN- moieties in these two groups could play an homologous role. In particular, they are able to form double hydrogen bonds, the strength of which is compatible with the interaction energy at the binding site. Differences in the interaction properties of these two moieties could provide some pieces of explanation of the resistance phenomenon. Tentative mechanisms of interaction of inhibitors and quinones with a binding site, possibly unique, on the B target-protein are proposed
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Rong, Alena [Verfasser]. „Mechanodynamics of cardiomyocytes in the context of dilated cardiomyopathy (DCM) / Alena Rong“. Greifswald : Universitätsbibliothek Greifswald, 2016. http://d-nb.info/1080935487/34.
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Souza, Juliana Alles de Camargo de. „O infográfico e a divulgação científica midiática (DCM): (entre) texto e discurso“. Universidade do Vale do Rio dos Sinos, 2012. http://www.repositorio.jesuita.org.br/handle/UNISINOS/4460.
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UNISINOS - Universidade do Vale do Rio dos Sinos
O infográfico tem sido amplamente utilizado em diversas situações comunicativas que envolvem diversos campos do conhecimento, em especial, no domínio midiático. No âmbito da Divulgação da Ciência na Mídia (DCM), destaca-se o infográfico que se orienta para as visadas do fazer-saber e fazer-compreender ciência, marcado pelo fazer-sentir promovido pela plasticidade das cores, das formas e das topografias utilizadas. Mesmo assim, são escassos os trabalhos de investigação sobre esse texto sincrético (em que imagem e palavra, simultaneamente, produzem o sentido). Consequentemente, foram encontrados, desde o início desta pesquisa, apenas estudos no campo do periodismo, na Comunicação. Por esse motivo, esta tese objetiva investigar o infográfico do ponto de vista discursivo-linguístico, fundamentando a ação nas teorias Semiolinguística e Linguística Textual, suplementadas pelos aportes epistêmicos da Semiótica Plástica. Esta possibilita analisar a imagem e integra a visão da Linguística focalizada nesse texto ancestral e contemporâneo da comunicação humana. Especificamente, objetiva-se analisar como se configuram os processos constitutivos da tessitura linguística da infografia, uma vez que os mecanismos de linguagem verbal e visual apontam para ações descritivas, narrativas e explicativas. Integram o percurso metodológico, primeiro, a constituição de um corpus de 58 textos infografados, isolados ou inseridos em matérias mais extensas, das revistas de divulgação científica midiática "Superinteressante", "Saúde! é vital" e "Mundo Estranho", selecionados entre agosto de 2008 e dezembro de 2009; segundo, o exame de aspectos discursivo-textuais de cada infográfico, compondo uma tabela de anotações revisada a cada semestre dos anos da elaboração da tese. Dessa observação e desses procedimentos, levantaram-se teorias que pudessem esclarecer a composição do infográfico DCM, o que implica assumir o caráter qualitativo da metodologia. Anotam-se os seguintes resultados: o infográfico da DCM se revela descritivo verbovisualmente; essa feição descritiva possibilita ancorar ações narrativas (em menor escala) e oportuniza, na grande maioria dos textos examinados, explicações sobre fenômenos, objetos e fatos, tanto em sequências explicativas quanto em fins ilocutórios dos textos, relacionados à ciência ou à tecnologia. Por consequência, a infografia tem um papel destacado nas explicações complexas, já que a verbovisualidade promove a otimização informativa (faz-saber e faz-compreender). Conclusivamente, é possível categorizar o infográfico como um texto relevante do letramento verbal, científico e visual e sustentar que as pesquisas sobre essa forma de produzir sentidos em texto são significativas para ações educativas, previstas, inclusive, nos Parâmetros Curriculares Nacionais (PCNs), e em projetos ou programas de letramento em diversas áreas de conhecimento humano.
Infographics have been largely used in several communicative situations that involve different knowledge areas, especially in the media domain. In the context of the Divulgation of Science in the Media (DSM), the infographic that contemplates the dimensions of the know-how and of the make-comprehend science, marked by the make-feel promoted by the plasticity of the colors, shapes and topography used in the diagram is highlighted. To the best of our knowledge, there are few studies about this syncretic text (in which image and word, simultaneously, produce the comprehension). Consequently, since the beginning of this research only studies in the field of journalism were found, related to Communication Sciences. For this reason, this thesis aims at investigating the infographic from a discursive-linguistic point of view based on the Semiolinguistic and Textual Linguistics theories supplemented by epistemic contributions of the Plastic Semiotics. The latter enables the analysis of the image and integrates the Linguistics perspective focused in this ancestral and contemporary text of the human communication. Specifically, the main aim of this study is to analyze what is the configuration of the processes that constitute the linguistic organization of the infographics taking into consideration that the mechanisms of the verbal and visual language point to descriptive, narrative and explanatory actions. As part of the methodological path, the first step was the collection of a corpus of 58 infographic texts, isolated or inserted in longer articles of scientific divulgation magazines in the media such as “Superinteressante”, “Saúde! é vital” and “Mundo Estranho”. The texts were selected between August 2008 and December 2009. In a second step, an analysis of the discursive-textual aspects of each infographic was performed, compounding an annotation table that was reviewed each semester during the thesis development period. From this observation and using these procedures, different theories that can clarify the composition of the DSM infographic were elaborated, which implies in assuming the qualitative characteristic of the methodology. The following results were noted: the DSM infographic reveals itself as a descriptive tool in the verbal dimension as well as in the visual dimension. Such descriptive feature enables the anchorage of narrative actions (to a lesser extent) and creates the possibility of explanations, in a greater number of the texts analyzed, about phenomena, objects and facts, both in explanatory sequences and in ilocutory aims of texts, related to science or technology. Consequently, infographics have an important role in complex explanations, as verbal and visual aspects promote an informative optimization (make-know and make-comprehend). In conclusion, it is possible to classifiy the in fographic as a relevant text of the verbal, scientific and visual literacy. Furthermore, it carries out that researches about this form of producing comprehension in a text are significant for educational actions, foreseen in the “Parâmetros Curriculares Nacionais” (PCNs) and in literacy projects or programs in several areas of the human knowledge.
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Chen, Rui. „Analysis and Design of a DCM SEPIC PFC with Adjustable Output Voltage“. Thesis, Virginia Tech, 2015. http://hdl.handle.net/10919/51664.
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Power Factor Correction rectifiers are widely adopted as the first stage in most grid-tied power conversion systems. Among all PFC converts for single phase system, Boost PFC is the most popular one due to simplicity of structure and high performance. Although the efficiency of Boost PFC keeps increasing with the evolution of semiconductor technology, the intrinsic feature of high output voltage may result cumbersome system structure with multiple power conversion stages and even diminished system efficiency. This disadvantage is aggravated especially in systems where resonant converters are selected as second stage.
Especially for domestic induction cooker application, step-down PFC with wide range output regulation capability would be a reasonable solution, Conventional induction cooker is composed by input filter, diode-bridge rectifier, and full bridge or half bridge series resonant circuit (SRC). High frequency magnetic field is induced through the switching action to heat the pan. The power level is usually controlled through pulse frequency modulation (PFM). In such configuration, first, a bulky input differential filter is required to filter out the high frequency operating current in SRC. Second, as the output power decreases, the operating point of SRC is moved away from the optimum point, which would result large amount circulating energy. Third, when the pan is made of well conducting and non-ferromagnetic material such as aluminum, due to the heating resistance become much smaller and peak output voltage of the switching bridge equals to the peak voltage of the grid, operating the SRC at the series resonant frequency can result excessive current flowing through the switch and the heating coil. Thus for pan with smaller heating resistance, even at maximum power, the operating frequency is pushed further away from the series resonant point, which also results efficiency loss.
To address these potential issues, a PFC circuit features continuous conducting input current, high power factor, step-down capability and wide range output regulation would be preferred. The Analysis and design work is present in this article for a non-isolated hard switching DCM SEPIC PFC. Due to DCM operation of SPEIC converter, wide adjustable step-down output voltage, continuous conduction of input current and elimination of reverse recovery loss can be achieved at same time.
The thesis begins with circuit operation analysis for both DC-DC and PFC operation. Based on averaged switching model, small signal model and corresponding transfer functions are derived. Especially, the impact from small intermediate capacitor on steady state value are discussed.
With the concept of ripple steering, theoretic analysis is applied to SEPIC converter with two coupled inductors. The results indicate if the coupling coefficient is well designed, the equivalent input inductance can be multiple times larger than the self-inductance. Because of this, while maintaining input current ripple same, the two inductors of SEPIC can be implemented with two smaller coupled inductors. Thus both the total volume of inductors and the total number of windings can be reduced, and the power density and efficiency can be improved. Based on magnetic reluctance model, a corresponding winding scheme to control the coupling coefficient between two coupled inductors is analyzed. Also the impact of coupled inductors on the small signal transfer function is discussed.
For the voltage follower control scheme of DCM PFC, single loop controller and notch filter design are discussed. With properly designed notch filter or the PR controller in another word, the closed loop bandwidth can be increased; simple PI controller is sufficient to achieve high power factor; THD of the input current can be greatly reduced.
Finally, to validate the analysis and design procedure, a 1 kW prototype is built. With 120 Vrms AC input, 60V to 100V output, experimental results demonstrate unity power factor, wide output voltage regulation can be achieved within a single stage, and the 1 kW efficiency is around 93%.Master of Science
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梁景雄 und King-hung Daniel Leung. „Investigation of metal-metal bonding interactions of initially excitedstate associated with d * p transitions in Pt2(P2O5H2)44-, M2(dcpm)2(M=Au,Ag,Cu) and M2(dmpm)3 (M=Au,Cu) (dcpm=bis(dicyclohexylphosphine)methane) inorganic complexes“. Thesis, The University of Hong Kong (Pokfulam, Hong Kong), 2000. http://hub.hku.hk/bib/B31240525.
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Eilers-König, Nina. „Ultrafast relaxation after photoexcitation of the dyes DCM and LDS-750 in solution“. [S.l. : s.n.], 1999. http://deposit.ddb.de/cgi-bin/dokserv?idn=959457828.
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Eilers-König, Nina. „Ultrafast relaxation after photoexcitation of the dyes DCM and LDS-750 in solution“. Doctoral thesis, Humboldt-Universität zu Berlin, Mathematisch-Naturwissenschaftliche Fakultät I, 1999. http://dx.doi.org/10.18452/14468.
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Die Relaxation der Styrylfarbstoffe DCM und LDS-750 nach Photoanregung in flüssiger Phase wurde mittels zeitaufgelöster optischer Spektroskopie untersucht. Dabei wurde die Breitband-Pump-Probe-Technik angewandt. Zur Charakterisierung der Relaxation von DCM im elektronischen Grundzustand wurde außerdem die Breitband-Dump-Probe-Technik (stimuliertes Emissionspumpen) eingesetzt. Für die beobachtete schnelle Relaxation von DCM wurde eine annähernd lösungsmittelunabhängige Zeitkonstante von 0.23 (( 0.04) ps im elektronisch angeregten und von 0.28 (( 0.07 ps) im elektronischen Grundzustand gefunden. Sie wurde als Konforma tionsänderung mit nur geringer Ladungsverschiebung charakterisiert. Die weitere spektrale Entwicklung wird in polarer Lösungsmittelumgebung vorwiegend von der Solvatation bestimmt. Für das ionische Polymethin LDS-750 wurden nach der Anregung solvensabhängige Kinetiken beobachtet, die sich durch die Annahme dreier möglicher Konformationen im S1 erklären lassen.Relaxation of the stryryl dyes DCM and LDS-750 after photoexcitation in the liquid phase has been investigated by means of time-resolved optical spectroscopy. For this purpose, the broadband pump-probe technique was used. To characterize the relaxation of DCM in the electronic ground state, additionally the broadband dump-probe technique (stimulated emission pumping) was applied. An approximately solvent-independent time constant was found typical for the observed fast relaxation of DCM, with values of 0.23 ((0.04) ps in the excited and 0.28 (( 0.07 ps) in the electronic ground state. The relaxation was characterized as conformational change with only a small amount of charge transferred. The further spectral evolution in polar solvents was dominated by solvation dynamics.For the ionic polymethine species LDS-750 solvent-dependent kinetics were found after photoexcitation. They could be accounted for by assuming the existence of three different conformers within the S1 state.
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Leung, King-hung Daniel. „Investigation of metal-metal bonding interactions of initially excited state associated with d * p transitions in Pt2(P2O5H2)44-, M2(dcpm)2 (M=Au, Ag, Cu) and M2(dmpm)3 (M=Au, Cu) (dcpm= bis(dicyclohexylphosphine)methane) inorganic complexes /“. Hong Kong : University of Hong Kong, 2000. http://sunzi.lib.hku.hk/hkuto/record.jsp?B21490272.
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Souza, Anamélia Contente de. „Implementando aplicações distribuídas utilizando CORBA e DCOM: um estudo de caso voltado à área de banco de dados“. Florianópolis, SC, 1999. http://repositorio.ufsc.br/xmlui/handle/123456789/80755.
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Dissertação (mestrado) - Universidade Federal de Santa Catarina, Centro TecnológicoMade available in DSpace on 2012-10-18T18:56:22Z (GMT). No. of bitstreams: 0Bitstream added on 2016-01-09T04:31:17Z : No. of bitstreams: 1 177491.pdf: 7142788 bytes, checksum: e40954b2aae4c3d0ca10a211dd1a2366 (MD5)
Este trabalho apresenta um estudo de plataformas para o desenvolvimento de aplicações distribuídas,em particular as arquiteturas CORBA e DCOM. O objetivo perseguido neste estudo é a realização de um aplicativo sobre ambas arquiteturas, visando observar os seus desenvolvimentos diante de uma situação real
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Bjørhei, Eivind. „Beregning av plastiske ledd og overstyrke i betongskiver ved dimensjonering for jordskjelv i DCM“. Thesis, Norges teknisk-naturvitenskapelige universitet, Institutt for konstruksjonsteknikk, 2012. http://urn.kb.se/resolve?urn=urn:nbn:no:ntnu:diva-18799.
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Med innføring av eurokodene som enerådende standarder i Norge fra 1. april 2010 har dimensjonering for jordskjelv blitt mer aktuelt, da Eurokode 8 gir mer utvidede, detaljerte og presise krav enn forgjengeren NS 3491-12. Eurokode 8 gir i Norge mulighet til å redusere de seismiske kreftene på konstruksjonen ved å dimensjonere for middels duktilitet i duktilitetsklasse M - DCM. For en enkeltstående veggskive i armert betong kan de seismiske kreftene halveres, men grunnet krav til overstyrke i den ikke-duktile delen av skiven blir besparelsene ved å beregne i DCM i en del tilfeller likevel små.Overstyrken i veggskiver ved dimensjonering i DCM styres av den såkalte forskyvningen av strekkkraftlinjen, a1, i omhyllingskurven for momentdiagrammet til veggskiven og er gitt i punkt 5.4.2.4 i Eurokode 8. Eurokode 8 sier at denne kan forenkles til kritisk høyde, hcr , som bestemmes av vegglengde eller vegghøyde og begrenses av etasjehøyden. Ved å følge Eurokode 8s anbefalinger for kritisk høyde fås overstyrker i størrelsesorden 50-100 % og derfor er det ønskelig å finne et mer nøyaktig mål for denne.Forskyvningen av strekkraftlinjen tilsvarer utstrekningen av det plastiske leddet som dannes i overkant av fundamentet. Et forslag til et bedre mål for hcr er ekvivalent lengde av plastisk ledd, Lpl , pluss en avstand for å sikre elastisk oppførsel over den kritiske høyden: hcr=Lpl+? . For å se på utstrekningen av det plastiske området langs veggskiven er det foretatt ikke-lineære statiske beregninger på armerte veggskiver med elementmetodeprogrammet Abaqus. Det er sett på ekvivalent lengde av plastisk ledd for veggskiver med ulik veggtykkelse t og med varierende horisontal vegglengde lw og lengdearmeringsforhold ρsl . Resultatene er sammenlignet med tidligere studier. Det er også sett på utstrekning av full flyt i vertikalarmeringen.Resultatene av ekvivalent lengde av plastisk ledd stemmer godt med tidligere studier, men det må presiseres at resultatene fra de tidligere studiene har stor statistisk varians. For veggskivene som er studert i denne oppgaven er det i alle tilfeller stor overstyrke ved bruk av Eurokode 8s betraktning, som bekrefter at anbefalingene til hcr i Eurokode 8 er større enn nødvendig. Det er funnet god korrelasjon mellom ekvivalent lengde av plastisk ledd og vegglengde, men ikke for varierende veggtykkelse eller lengdearmeringsforhold. Det samme gjelder for utstrekning av full flyt i vertikalarmeringen. Begge har et stigningstall på ca 0,3lw, men full flyt i armeringen strekker seg i underkant av en halv meter lengre opp i skiven. Ut i fra dette kan det gis et nytt forslag til kritisk høyde, nemlig ekvivalent lengde av plastisk ledd pluss ett tillegg for differanse til full flyt i vertikalarmering: hcr = Lpl + differanse i avstand til full flyt i vertikalarmering.Resultatene i denne oppgaven viser at spesielt for veggskiver i bygg på tre til fire etasjer vil overstyrken med bruk av hcr fra Eurokode 8 bli meget stor. Det kan her lønne seg å gjøre en ikke-lineær beregning for å kunne spare armering langs hele veggskivens høyde.
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Rivera, Marcela. „Reconfiguration and life-cycle distributed components : asynchrony, coherence and verification“. Nice, 2011. http://www.theses.fr/2011NICE4125.
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En programmation orientée à composants, mais particulièrement dans des environnements distribués, les composants ont besoin d’être adaptatifs. Une majeure partie de cette adaptation repose sur la reconfiguration dynamique. Dans cette thèse, nous introduisons une nouvelle approche pour la reconfiguration des modèles de composants distribués, avec l’objectif de faciliter le processus de reconfiguration et d’assurer la consistance et la cohérence du système. Avant d’exécuter une reconfiguration, il est nécessaire que les composants soient dans un état cohérent et stable, afin d’éviter des incohérences dans le processus de reconfiguration. Pour ceci, nous concevons un algorithme pour l’arrêt d’un composant d’une manière sécurisée et atteignant un état stable. Cela a été réalisé en mettant en œuvre un mécanisme de marquage et d’interception qui permet d’ajouter des informations aux requêtes et de manipuler leurs flux, afin de décider lesquelles doivent être servies avant d’arrêter le composant. Nous avons conçu un ensemble de primitives de reconfiguration de haut niveau qui permettent de réaliser des opérations de reconfiguration plus complexes. Nous fournissons un contrôleur supplémentaire à notre modèle de composant qui implémente ces primitives. Pour le déclenchement des tâches de reconfiguration, nous avons étendu le langage FScript pour lui permettre d’exécuter des reconfigurations distribuées, en déléguant certaines actions à des composants. Pour ceci, nous avons défini un contrôleur additionnel à l’intérieur de la membrane des composants. Nous avons testé notre approche sur deux applications basées sur GCM/ProActive : CoCoME et TurnTableFor component programming, but even more specifically in distributed and Grid environments, components need to be highly adaptive. A great part of adaptativeness relies on dynamic reconfiguration of component systems. We introduce a new approach for reconfiguring distributed components with the main objective to facilitate the reconfiguration process and ensure the consistency and coherence of the system. First, before executing a reconfiguration it’s necessary that the components are a coherent and quiescent state. This is done to avoid inconsistency in the reconfiguration process. To achieve this, we design an algorithm for stopping a component in a safe manner and reach this quiescent state. This was realized by implementing a tagging and interception mechanisms that adds information to the requests and manipulates their flow in order to decide which of them must be served before stopping the component. Next, we designed a set of high-level reconfiguration primitives to achieve more complex reconfiguration operations. These primitives include : add, remove, duplicate, replace, bind, and unbind. We provide an additional controller to our component model which implements these primitives. Additionally, for triggering the reconfiguration tasks, we extended the FScript language to give it the capability of executing distributed reconfiguration actions, by delegating some actions to specific components. To achieve this objective, we defined an additional controller inside the membrane of the components. We tested our implementation over two GCM/Pro Active based applications : the CoCoME example and the TurnTable example
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Parvatiyar, Michelle S. „Predicting Cardiomyopathic Phenotypes by Altering the Calcium Affinity of Cardiac Troponin C“. Scholarly Repository, 2009. http://scholarlyrepository.miami.edu/oa_dissertations/292.
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Cardiac diseases associated with mutations in Tn subunits include hypertrophic cardiomyopathy (HCM), dilated cardiomyopathy (DCM) and restrictive cardiomyopathy (RCM). Altered calcium handling in these diseases is evidenced by changes in the Ca2+ sensitivity of contraction. Mutations were generated to increase/ decrease the Ca2+ sensitivity of skinned fibers, and create the classified effects of DCM, HCM and RCM. This study mimicked the changes in Ca2+ sensitivity and relaxation properties of the muscle to determine if this was sufficient to recreate the disease. Four mutants (A23Q, S37G, V44Q, L48Q) were identified with RCM-like properties; a large increase in Ca2+ sensitivity, increased basal force and loss of ATPase inhibition. Two mutations were identified (E40A, I61Q) with DCM properties; decreased Ca2+ sensitivity in skinned fibers, decreased force recovery (%), and decreased activation of the ATPase at high Ca2+ levels (pCa 6-4). Also, the functional effects of four newly identified cTnC mutations associated with HCM were reported. Three of these HCM mutations A8V, C84Y, and D145E displayed HCM characteristics, increased Ca2+ sensitivity in skinned fibers and ATPase and A8V and D145E increased the force recovery. Only, D145E significantly increased the ATPase activation of the reconstituted thin filament. Also, Ca2+ affinity measurements using IAANS fluorescence were performed. No significant changes were found for E134D. The C84Y IAANS fluorescence measurements revealed that cTnC Ca2+ affinity of the cTn complex was unaltered. The Ca2+ affinity increased for D145E in isolated cTnC and the cTn complex, however in the regulated thin filament (RTF) with myosin subfragment-1 (S1) and rigor crossbridges the Ca2+ affinity values were similar to the fiber Ca2+ sensitivity. For A8V, the RTF significantly increased the Ca2+ affinity, and addition of S1 and rigor crossbridges caused the values to parallel the Ca2+ sensitivity values. In conclusion, direct and indirect protein-protein interactions contribute to the enhanced Ca2+ sensitivity of the HCM mutants. The cTnC mutant screen allowed selection of mutations that mimic the disease states: S37G (RCM) and, E40A (DCM); A8V (HCM) from the patient study for analysis in knock-in mice for futures studies to determine if these disease states can be recapitulated in vivo.
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Sucu, Mehmet. „Parametric average value modeling of flyback converters in ccm and dcm including parasitics and snubbers“. Thesis, University of British Columbia, 2011. http://hdl.handle.net/2429/38157.
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Modeling of switched-mode DC-DC converters has been receiving significant interest due to their widespread applications. Averaged modeling is the most common approach (and tool) that has been used to analyze dynamic performance of converter circuits. Specifically, state-space averaged models are widely used because of their simplicity and generality. However, as has been shown in the literature, the challenges of directly applying this approach to predict the discontinuous variables (states) and include the parasitics and losses have limited application of this approach to a wider range of converter circuits. The recently introduced parametric average value models (PAVM) has a potential to overcome this problem.
In this Thesis, first of all a second-order flyback converter has been investigated. An analytical solution of state-apace averaging and small-signal analysis of the flyback converter in continuous conduction mode (CCM) and discontinuous conduction mode (DCM) is given without and with parasitics. The PAVM methodology has been applied to the second-order model to overcome the problem of discontinuous state during the DCM.
The snubber circuits in flyback converter have also been investigated. Appearance of snubbers in the model introduces a problem on the output voltage besides improving the efficiency prediction. It is shown that with the snubbers the conventional state-space averaging cannot predict the output voltage correctly in CCM and DCM. To solve this problem the model is partitioned into two different sub-circuits: i) switching sub-circuit circuit; and ii) non-switching sub-circuit. Thereafter it becomes possible apply the averaging on the switching sub-circuit only.
Finally, a full-order flyback converter with two RC snubber circuits and all the basic parasitics is considered. The PAVM methodology has been extended to this class of switching converter for the first time. It is shown that including the snubbers and parasitics significantly improves the model accuracy in terms of predicting converter efficiency, which represents an appreciable improvement over all previously existing average models. The proposed model has been verified with detailed simulations and hardware measurements.
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Jones, Brian Lindley. „A Psychometric Analysis of the Precalculus Concept Assessment“. BYU ScholarsArchive, 2021. https://scholarsarchive.byu.edu/etd/8918.
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The purpose of this study was to examine the psychometric properties of the Precalculus Concept Assessment (PCA), a 25-item multiple-choice instrument designed to assess student reasoning abilities and understanding of foundational calculus concepts (Carlson et al., 2010). When this study was conducted, the extant research on the PCA and the PCA Taxonomy lacked in-depth investigations of the instruments' psychometric properties. Most notably was the lack of studies into the validity of the internal structure of PCA response data implied by the PCA Taxonomy. This study specifically investigated the psychometric properties of the three reasoning constructs found in the PCA taxonomy, namely, Process View of Function (R1), Covariational Reasoning (R2), and Computational Abilities (R3). Confirmatory Factor Analysis (CFA) was conducted using a total of 3,018 pretest administrations of the PCA. These data were collected in select College Algebra and Precalculus sections at a large private university in the mountain west and one public university in the Phoenix metropolitan area. Results showed that the three hypothesized reasoning factors were highly correlated. Rival statistical models were evaluated to explain the relationship between the three reasoning constructs. The bifactor model was the best fitting model and successfully partitioned the variance between a general reasoning ability factor and two specific reasoning ability factors. The general factor was the dominant factor accounting for 76% of the variance and accounted for 91% of the reliability. The omegaHS values were low, indicating that this model does not serve as a reliable measure of the two specific factors. PCA response data were retrofitted to diagnostic classification models (DCMs) to evaluate the extent to which individual mastery profiles could be generated to classify individuals as masters or non-masters of the three reasoning constructs. The retrofitting of PCA data to DCMs were unsuccessful. High attribute correlations and other model deficiencies limit the confidence in which these particular models could estimate student mastery. The results of this study have several key implications for future researchers and practitioners using the PCA. Researchers interested in using PCA scores in predictive models should use the General Reasoning Ability factor from the respecified bifactor model or the single-factor model in conjunction with structural equation modeling techniques. Practitioners using the PCA should avoid using PCA subscores for reasoning abilities and continue to follow the recommended practice of reporting a simple sum score (i.e., unit-weighted composite score).
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Seysen, Johanna. „Beurteilung der linksventrikulären Funktion nach partieller Ventrikulektomie mittels Stressechokardiographie“. Doctoral thesis, Humboldt-Universität zu Berlin, Medizinische Fakultät - Universitätsklinikum Charité, 2004. http://dx.doi.org/10.18452/15113.
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Ziel: Die partielle Ventrikulektomie (PLV) stellt eine chirurgische Therapieoption der terminalen Herzinsuffizienz dar. In dieser Arbeit wurde der Einfluss der PLV auf die kardiale Leistungsfähigkeit untersucht sowie eine Überlebensanalyse durchgeführt. Ferner sollte eine Aussage zum Verhalten der postoperativen linksventrikulären Funktion unter Belastung gemacht werden. Dabei wurden zwei Gruppen miteinander verglichen: 1. Patienten mit idiopathischer Kardiomyopathie (Gruppe ID) und 2. Patienten mit ischämischer Myopathie (Gruppe IS). Material und Methodik: Insgesamt wurden 75 Patienten, die sich im Zeitraum von 1995 bis 1999 in der Klinik für kardiovaskuläre Chirurgie der Charité einer PLV unterzogen hatten, berücksichtigt. Die postoperativen Untersuchungen erfolgten an 19 Patienten. Die linksventrikulären Funktionsparameter wurden mittels transthorakaler und transösophagealer Echokardiographie einschließlich Stressechokardiographie erhoben. Ergebnisse: In beiden Gruppen war postoperativ eine hochsignifikante Verbesserung der NYHA-Klassifikation zu registrieren. Die echokardiographischen Untersuchungen ergaben in beiden Gruppen eine Verbesserung der Ejektionsfraktion (EF) als Maß für die linksventrikuläre Funktion. Ferner war eine Verringerung des linksventrikulären enddiastolischen Durchmessers (LVEDD) und ein signifikanter Rückgang der Mitralinsuffizienz (MI) festzustellen. Die Stressechokardiographie zeigte für die Gruppe IS eine Steigerung der Kontraktilität unter Dobutamin mit tendenziell physiologischen Befunden. (signifikanter Anstieg von EF, cardiac index (CI), fractional area change (FAC) sowie Abnahme des linksventrikulären endsystolischen Volumenindex (LVESVI)). Für die Gruppe ID konnte dies nur bedingt gezeigt werden. Bei der Überlebensanalyse ergaben sich ebenfalls ein signifikant besseres Abschneiden der Gruppe IS, insgesamt lag die Überlebensrate hinsichtlich kardialer Todesursachen bei 69,9 % (1. Jahr) und 66,7 % (2. Jahr). Schlussfolgerungen: Beurteilend lässt sich feststellen, dass die überlebenden und zur Nachuntersuchung erschienenen Patienten mit einer Steigerung der körperlichen Belastbarkeit und Besserung der Ventrikelfunktionsparameter von der Operation profitieren konnten, wobei sich ein besseres Abschneiden der Gruppe IS zeigte. Dazu passend wies auch die stressechokardiographische Untersuchung vor allem für die Gruppe IS postoperativ auf myokardiale Reserven hin. Die hier aufgezeigten Unterschiede der Gruppen, die sich auch in den Überlebensraten widerspiegeln, machen die Bedeutung von guten Selektionskriterien deutlich, die in weiteren Studien noch differenzierter betrachtet werden müssen. Damit zusammenhängend kommt auch der Anpassung der mit der PLV kombinierten Eingriffe an die Ursachen der Myopathien besondere Wichtigkeit zu.Aim: Partial left ventriculectomy (PLV) represents a surgical option for the treatment of end-stage-heart failure. The aim of this thesis was an investigation of the influence of PLV on LV-function and on clinical outcome and to analyse survival in a group of patients submitted to PLV: Also, post surgical left ventricular function under stress conditions was determined. Two groups served as a basis for comparison: 1. patients with idiopathic dilated cardiomyopathy (ID group) and 2. patients with ischemic myopathy (IS group). Methods: 75 patients undergoing PLV at the clinic for cardiovascular surgery at the Charité Berlin between 1995 and 1999 were considered. LV-function was determined by transthoracic and transesophageal echocardiography including stress echocardiography. Results: The NYHA-classification improved in both groups significantly after the surgery. The echocardiography showed a significant increase in ejection fraction (EF), a reduction of left ventricular enddiastolic diameter (LVEDD) and a significant decrease in mitral insufficiency (MI). The post surgical stress-echocardiography indicated a rise of left ventricular contractility under dobutamine with a tendency to physiological results (significant increase in EF, cardiac index (CI), fractional area change (FAC) and decrease in left ventricular enddiastolic volume index (LVEDVI)) in the IS group. Concerning the ID group, these results were only partially valid. Looking at the survival rates it turned out that they are significantly higher for the IS group than for the ID group. All in all, 1-year-survival was at 69,9 % and 2-year-survival was at 66,7 %. Conclusion: It can be concluded that survivors profited from the surgery which is shown by the improvement of physical capacity and left ventricular parameters. This applies especially to patients from the IS group, which conforms to the fact that also the post surgical stress echocardiography revealed myocardial reserves for this group. The differences between the groups which have been demonstrated in these investigations and which are also reflected in survival rates stress the importance of carefully chosen selection criteria and the need for further subtly differentiated research in this special field. Considering this, also the correlation between the intervention combined with PLV and the cause of the myopathy is of great importance.
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Khalid, Shehla. „A Dementia Care Mapping (DCM) data warehouse as a resource for improving the quality of dementia care : exploring requirements for secondary use of DCM data using a user-driven approach and discussing their implications for a data warehouse“. Thesis, University of Bradford, 2016. http://hdl.handle.net/10454/14625.
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The secondary use of Dementia Care Mapping (DCM) data, if that data were held in a data warehouse, could contribute to global efforts in monitoring and improving dementia care quality. This qualitative study identifies requirements for the secondary use of DCM data within a data warehouse using a user-driven approach. The thesis critically analyses various technical methodologies and then argues the use and further demonstrates the applicability of a modified grounded theory as a user-driven methodology for a data warehouse. Interviews were conducted with 29 DCM researchers, trainers and practitioners in three phases. 19 interviews were face to face with the others on Skype and telephone with an average length of individual interview 45-60 minutes. The interview data was systematically analysed using open, axial and selective coding techniques and constant comparison methods. The study data highlighted benchmarking, mappers’ support and research as three perceived potential secondary uses of DCM data within a data warehouse. DCM researchers identified concerns regarding the quality and security of DCM data for secondary uses, which led to identifying the requirements for additional provenance, ethical and contextual data to be included in a warehouse alongside DCM data to meet requirements for secondary uses of this data for research. The study data was also used to extrapolate three main factors such as an individual mapper, the organization and an electronic data management that can influence the quality and availability of DCM data for secondary uses. The study makes further recommendations for designing a future DCM data warehouse.
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Alves, Ferreira Màrcia. „Prevalencia de signos y síntomas de DCM en un grupo de niños de 6 a 12 años“. Doctoral thesis, Universitat de València, 2008. http://hdl.handle.net/10803/9744.
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Este estudio tiene como objetivo estimar la prevalencia de signos y síntomas de disfuncióncraneomandibular (DCM) en un grupo de niños de 6 a 12 años de edad de Valencia.El método utilizado fue: anamnesis, cuestionario a los padres y examen clínico.Los resultados revelaron que:Un 54,6% de los niños y el 66% de las niñas presentaron al menos un síntoma de DCM:dolor de cabeza, dolor en los oídos, boca desencajada, ruidos al masticar, dificultad al masticar.Un 82,8% de los niños y el 87,5% de las niñas tenían al menos un hábito o parafunción:rechinar, morderse las uñas, chuparse los dedos, morder lápiz o bolígrafo, roncar, masticaciónunilateral, dormir con la boca abierta, empuje lingual, deglución atipica.Un 40,6% de los niños y 62,5% de las niñas presentaron al menos un signo de DCM:ruidos en la ATM (auscultados), dolor en la apertura de la boca, movimientos reducidos deapertura y/o de lateralidad de la mandíbula, desviación mandibular en apertura, dolor y/o rigidez ala palpación muscular.Según Farsi (2003), la diversidad de las cifras de prevalencia encontrada en los estudiossobre disfunción craneomandibular, podrían deberse a los diferentes grupos de edadesestudiados, al tamaño de la muestra, al entrenamiento del investigador y a los criterios dediagnóstico usados.Parece importante el estudio de parámetros para la identificación de medidas que puedanestar asociadas con movimientos disfuncionales de la ATM y que estos parámetros seanadecuados a las diferentes edades. También parece necesario complementar el cuestionario conpreguntas a los niños en entrevista.Las mujeres presentaron mayor prevalencia de síntomas y signos de DCM y deparafunciones, que puede ser debido a que las mujeres tienen más facilidad de exteriorizar lapercepción del dolor o debilidad.Se encontró relación estadísticamente significativa de la rigidez a la palpación muscularcon la presencia de corrector bucal. Sin embargo, no podemos afirmar que el uso de correctorbucal sea un factor etiológico de la DCM.A pesar de las altas prevalencias encontradas, podemos considerar bajo el riesgo dedesarrollo de DCM en los niños de la muestra, pues el factor tiempo es importante en ladesencadenación de un trastorno craneomandibular.Los estudios en niños pueden ayudar a conocer el proceso biológico de desarrollo de laDCM, y con este conocimiento poder desarrollar una mejor prevención en el futuro.Conclusiones:1- También los niños sufren alteraciones funcionales del sistema estomatognático. Sinembargo, no se puede afirmar que esto sea premonitorio de la aparición de una disfunciónarticular en el futuro y no requiere tratamiento.2- El dolor de cabeza, la desviación en la apertura y el hábito de morder lápices ybolígrafos fueron respectivamente el síntoma, el signo y la parafunción que presentaronprevalencias más altas en la muestra.3- No se encontró diferencia estadísticamente significativa entre los síntomas y signos deDCM con relación a edad y sexo. Sin embargo se observó un aumento de la prevalencia con laedad y mayor frecuencia en el sexo femenino.4- La exploración sistemática de la ATM debe formar parte de la rutina en la consulta deodontopediatría.5- Sería conveniente realizar estudios longitudinales sobre DCM en niños.This study was undertaken to record the prevalence of signs and symptoms ofcraniomandibular dysfunction (CMD) in one-hundred and twenty children (120) aged 6-12, in Valencia, Spain. A questionnaire answered by parents and a clinical examinationof the signs and symptoms of CMD were performed.The results of the study showed:54.6% of the boys and 66% of the girls with, at least, one symptom of CMD:headache; earache; mandible dislocation; sounds from the temporomandibular joints(TMJ) while chewing; difficult mastication.82.8% of de boys and 87.5% of the girls with at least one of the following oralparafunctions: grinding; nail-biting; thumb-sucking; pen/pencil-biting; snoring; openmouthsleeping; unilateral mastication; oral breathing; tongue thrust; atypicaldeglutition.40.6% of the boys and 62.5% of the girls with at least one sign of the CMD: TMJsounds (auscultation); pain at jaw opening; reduced opening and/or lateral movementsof the mandible; locking; jaw deviation on opening; pain and/or stiffness on palpation ofthe temporomandibular joint muscles.No statistically significant associations were found between sex or age in theprevalence of any sign or symptom. However, the prevalence of signs and symptomsof dysfunction occurred more frequently among older boys and girls.In spite of the high prevalences found, we can consider the risk of CMD in thechildren sampled to be low, since time is a determinant factor in the development of acraniomandibular disorder.It is concluded that children suffer functional disturbances of the stomatognathicsystem and a routine dental examination of the TMJ and the masticatory system shouldbe done to identify them. Nevertheless, it is not possible to be sure that thosepreliminary stages will develop into a dysfunction and, therefore, do not needtreatment.Studies in children can help to acquire more complete knowledge of thebiological process of development of the CMD and with this knowledge to be able todevelop a better prevention in the future. It would be suitable to realize longitudinalstudies of CMD in children.
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Wong, Kit Iong. „Chemical removal of dichloromethane (DCM) from contaminated water using advanced oxidation processes (AOPs) :Hydrogen Peroxide Ozone UV“. Thesis, University of Macau, 2018. http://umaclib3.umac.mo/record=b3868740.
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Tang, Wee-Hua. „EFFICIENT INTEGRAL EQUATION METHOD FOR 2.5D MICROWAVE CIRCUITS IN LAYERED MEDIA“. UKnowledge, 2005. http://uknowledge.uky.edu/gradschool_diss/345.
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An efficient integral equation method based on a method of moment (MoM) discretization of the Mixed-Potential Integral Equation (MPIE) for the analysis of 2.5D or 3D planar microwave circuits is presented. The robust Discrete Complex Image Method (DCIM) is employed to approximate the Greens functions in layered media for horizontal and vertical sources of fields, where closed-form formulations of the z-integrations are derived in the spectral domain. Meanwhile, an efficient and accurate numerical integration technique based on the Khayat-Wilton transform is used to integrate functions with 1/R singularities and near singularities. The fast iterative solver - Quadrature Sampled Pre-Corrected Fast Fourier Transform (QSPCFFT) - is associated with the MoM formulation to analyze electrically large, dense and complex microwave circuits.
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Amini, Akbarabadi Soroush. „Circuit averaging and numerical average value modeling of flyback converter in CCM and DCM including parasitics and snubbers“. Thesis, University of British Columbia, 2014. http://hdl.handle.net/2429/47052.
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Modeling and analysis of basic DC-DC converters is essential for enabling power-electronic solutions for the future energy systems and applications. Average-value modeling (AVM) provides a time-efficient tool for studying power electronic systems, including DC/DC converters. Many AVM techniques including the analytical and numerical state-space averaging and circuit averaging have been developed over the years and available in the literature. Average-value modeling of ideal PWM converters neglects parasitics (losses) to simplify the derivations and modeling procedures, and the resulting models may not be sufficiently accurate for practical converters.
In this work, first we consider a second-order Flyback converter, which has transformer isolation and additional parasitics such as conduction losses that have not been accurately included in the prior literature. We propose three new AVMs using the analytical state-space averaging, circuit averaging, and parametric AVM approaches, respectively. By taking into account conduction losses, the accuracy of the proposed average-value models is significantly improved. The derived (corrected) models show noticeable improvement over the traditional (un-corrected) models.
Next, we consider the Flyback converter including the snubbers and leakage inductances in the full-order model. Snubbers reduce electromagnetic interfaces (EMI) during transients and protect switching devices from high voltage, and therefore are necessary in many practical converter circuits. Including snubbers into the model improves accuracy in predicting the circuit variables during the time-domain transients as well as predicting the converter efficiency. It is shown that conventional analytical/numerical methods of averaging do not result in accurate AVM for the full-order Flyback converter. A new formulation for the state-space averaging methodology is proposed that is functional for higher-order converters with parasitics and result in highly accurate AVM. The new approach is justified mathematically and verified experimentally using hardware prototype and measurements. The new model is demonstrated to achieve accurate results in large signal time-domain transients, and small-signal frequency-domain analysis in continuous conduction mode (CCM) and discontinuous conduction mode (DCM), which represents advancement to the state-of-the-art in this field.
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Yamaguchi, Claudio Akira. „"Um estudo da etiologia das alterações dos ligamentos estilohióide (síndrome de Eagle) e estilomandibular ( síndrome de Ernest) e suas relações com as DCMs"“. Universidade de São Paulo, 2005. http://www.teses.usp.br/teses/disponiveis/23/23137/tde-16112005-092510/.
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Esta pesquisa teve como objetivo geral aprofundar os conhecimentos sobre a Síndrome de Eagle e a Síndrome de Ernest, a fim de obter dados clínicos e científicos que permitissem ao clínico um diagnóstico mais efetivo destas, suas relações com as desordens craniomandibulares (DCMs) e a possível conduta clínica frente a essas síndromes. Por se tratarem de patologias que apresentam sintomatologia dolorosa e sinais e sintomas semelhantes àqueles da disfunção temporomandibular, tornam-se fatores complicadores do diagnóstico e do tratamento em si. Fatores etiológicos como estresse, traumas na região de cabeça, injúrias mandibulares, acidentes automobilísticos, cirurgias ou tratamentos dentais, entubação, amidalectomia e bruxismo ou apertamento dental foram estudados e desenvolvidos no presente trabalho, que contribuiu ainda com a apresentação de um recurso semiotécnico simples e importante para avaliação de tais anormalidades, através da análise de radiografias panorâmicas. Das 1063 radiografias panorâmicas analisadas, constatou-se a presença de alterações na cadeia estilohióidea em 86 delas, as quais foram reavaliadas e os respectivos pacientes submetidos a um questionário de avaliação médica. Os resultados nos levaram à conclusão de que fatores como injúrias mandibulares e traumas na região de cabeça e pescoço podem ser os prováveis fatores causadores das alterações na cadeia estilohióidea, além da associação com o estresse. Além disso, um dado relevante foi observado 100% dos pacientes do estudo apresentaram distúrbios oclusais, o que nos levou a inferir que um novo fator etiológico poderia estar sendo proposto.The aim of the study at issue is to deepen the knowledge of Eagle Syndrome and Ernest Syndrome in order to get the practical and scientific directions providing the doctor with a more effective diagnosis, clearing the relationship between them and the TMJD (temporomandibular joint disorders). It might show the clinical procedure concerning the mentioned diseases. Once the aching syntomatology is similar to the signals and symptoms of the temporomandibular disorders, the differencial diagnosis and medical care of the disease get to be complicated. Etiological facts like stress, physical harm on the head, mandibular injuries, car accidents, dental care, surgeries, intubation, tonsillectomy, bruxism or dental tightness are studied and developed in this present study, which also contributes toward a presentation of a simple and important diagnosis technique resource to the evaluation of the cited abnormalities by analyzing panoramic radiographies. An alteration in the stylohyoid chain was testified in 86 from 1063 panoramic radiographies. They were all examined in detail and the patients were given a medical evaluation enquiry. The results made us conclude that factors like stress, mandibular injuries, head and neck traumas could be the causing factors of the alteration in the stylohyoid chain. Furthermore, an unexpected datum was achieved 100% 1of patients under the study suffered from occlusion disorder, which made us infer that a new etiological factor could be proposed.
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Metz, Lisa [Verfasser], Andreas [Akademischer Betreuer] Mügge und Cornelia [Akademischer Betreuer] Piper. „Beeinflussung der T-Zellaktivität durch körperliches Training bei Patienten mit postinflammatorischer DCM / Lisa Metz. Gutachter: Andreas Mügge ; Cornelia Piper“. Bochum : Ruhr-Universität Bochum, 2015. http://d-nb.info/108036160X/34.
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Dumas, Sophie. „Évaluation d'architectures à objets distribués“. Versailles-St Quentin en Yvelines, 1998. http://www.theses.fr/1998VERS0011.
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Cette thèse aborde le problème de l'évaluation de performances d'architectures à objets distribués, architectures devenues incontournables dans le développement d'un système d'information distribué (SID). Dans un monde en constante évolution, industriels et chercheurs définissent des standards et des technologies permettant aux différents composants d'un SID de communiquer. Parmi les candidats émergents de ces technologies dites médiatrices, figurent l'architecture CORBA (common object request broker architecture) de l'OMG (object management group) et DCOM (distributed component object model), la solution propriétaire de Microsoft. L'émergence de ces architectures nécessite des prévisions de performances efficaces permettant d'optimiser un nouveau type d'applications. Cette thèse propose une évaluation de ces architectures basée sur la modélisation de corba/orbix, dcom et ole-db (ole-data bases). Orbix est aujourd'hui l'un des médiateurs les plus utilisés et dcom est une solution incontournable dans le monde bureautique. Ole-db est l'api qui vient en complément à ces deux technologies afin d'avoir une architecture dite trois-strates. Un modèle générique pour CORBA et DCOM ainsi qu'un modèle pour OLE-DB sont spécifiés et implémentés. Ce travail a été realisé au sein du projet esprit hélios et a abouti à l'extension de SWAP, l'outil d'évaluation de performances développé par IFATEC.
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Ying, Hu. „Synthesis and Photophysical Properties of 3D Substituted Heterohelicenes and their Derivatives“. Bowling Green State University / OhioLINK, 2008. http://rave.ohiolink.edu/etdc/view?acc_num=bgsu1224602780.
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Dauvermann, Maria Regina. „Investigation into functional large-scale networks in individuals with schizophrenia using fMRI data and Dynamic Causal Modelling“. Thesis, University of Edinburgh, 2014. http://hdl.handle.net/1842/10022.
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Schizophrenia is a complex and severe psychiatric disorder with positive symptoms, negative symptoms and cognitive deficits. Preclinical neurobiological studies showed that alterations of dopaminergic and glutamatergic neurotransmitter circuits involving the prefrontal cortex resulted in cognitive impairment such as working memory. Functional activation and functional connectivity findings of functional Magnetic Resonance Imaging (fMRI) data provided support for prefrontal dysfunction during fMRI working memory tasks in individuals with schizophrenia. However, these findings do not offer a neurobiological interpretation of the fMRI data. Biophysical modelling of functional large-scale networks has been designed for the analysis of fMRI data, which can be interpreted in a mechanistic way. This approach may enable the interpretation of fMRI data in terms of altered synaptic plasticity processes found in schizophrenia. One such process is gating mechanism, which has been shown to be altered for the thalamo-cortical and meso-cortical connection in schizophrenia. The primary aim of the thesis was to investigate altered synaptic plasticity and gating mechanisms with Dynamic Causal Modelling (DCM) within functional large-scale networks during two fMRI tasks in individuals with schizophrenia. Applying nonlinear DCM to the verbal fluency fMRI task of the Edinburgh High Risk Study, we showed that the connection strengths with nonlinear modulation for the thalamo-cortical connection was reduced in subjects at high familial risk of schizophrenia when compared to healthy controls. These results suggest that nonlinear DCM enables the investigation of altered synaptic plasticity and gating mechanism from fMRI data. For the Scottish Family Mental Health Study, we reported two different optimal linear models for individuals with established schizophrenia (EST) and healthy controls during working memory function. We suggested that this result may indicate that EST and healthy controls used different functional large-scale networks. The results of nonlinear DCM analyses may suggest that gating mechanism was intact in EST and healthy controls. In conclusion, the results presented in this thesis give evidence for the role of synaptic plasticity processes as assessed in functional large-scale networks during cognitive tasks in individuals with schizophrenia.
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Winkler, Cathrin Elisabeth [Verfasser], und Christian [Akademischer Betreuer] Hengstenberg. „Indikation, Risikostratifizierung und adäquate Therapiemaßnahmen im Rahmen einer AICD-Implantation im Regensburger DCM-Kollektiv / Cathrin Elisabeth Winkler. Betreuer: Christian Hengstenberg“. Regensburg : Universitätsbibliothek Regensburg, 2013. http://d-nb.info/1043102140/34.
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Hachem, Sara. „Service oriented Middleware for the large scale Internet of things“. Versailles-St Quentin en Yvelines, 2014. http://www.theses.fr/2014VERS0003.
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L'Internet of Things (IoT) est caractérisé par l'introduction, auprès des utilisateurs, d'un nombre grandissant d'objets (ou things) capables d'acquérir des données depuis leur environnement et d'agir sur celui-ci, et dotés de capacités de calcul et de communication sophistiquées. Une grande partie de ces objets ont pour avantage d'être mobiles, mais cette particularitéprovoque aussi l'émergence de problèmes nouveaux. Les plus critiques d'entre eux découlent directement de l'Internet actuel, sous une forme amplifiée, et portent sur la gestion du grand nombre d'utilisateurs et d'objets connectés, l'interopérabilité entre des objets aux technologies hétérogènes et les changements d'environnement dus à la mobilité d'un très grand nombre d'objets. Cette thèse se propose d'étudier et de résoudre les problèmes susmentionnés en adaptant l’Architecture Orientée Service (SOA) pour que les capteurs et les actionneurs intégrés aux objets puissent être présentés comme des services et, de fait, réduire le couplage entre ces services et leurs hôtes de façon à abstraire leur nature hétérogène. Toutefois, en dépit de ses avantages, SOA n'a pas été conçue pour gérer une aussi grande échelle que celle de l'IoT mobile. En conséquence, la contribution principale de cette thèse porte sur la conception d'une Thing-based Service-Oriented Architecture repensant les fonctionnalités de SOA, et tout particulièrement les mécanismes de découverte et de composition de services. Cette nouvelle architecture a été mise en oeuvre au sein de MobIoT, un middleware spécifiquement conçu pour gérer et contrôler le très grand nombre d'objets mobiles impliqués dans les opérations propres à l'IoT. Dans le but d'évaluer cette nouvelle architecture, nous avons implémenté un prototype et analysé ses performances au travers de nombreuses expériences qui démontrent que les solutions que nous proposons sont viables et pertinentes, notamment en ce qui concerne le passage à l'échelleThe Internet of Things (IoT) is characterized by a wide penetration in the regular user’s life through an increasing number of Things embedding sensing, actuating, processing, and communication capacities. A considerable portion of those Things will be mobile Things, which come with several advantages yet lead to unprecedented challenges. The most critical challenges, that are directly inherited from, yet amplify, today’s Internet issues, lie in handling the large scale of users and mobile Things, providing interoperability across the heterogeneous Things, and overcoming the unknown dynamic nature of the environment, due to the mobility of an ultra-large number of Things. This thesis addresses the aforementioned challenges by revisiting the commonly employed Service-Oriented Architecture (SOA) which allows the functionalities of sensors/actuators embedded in Things to be provided as services, while ensuring loose-coupling between those services and their hosts, thus abstracting their heterogeneous nature. In spite of its benefits, SOA has not been designed to address the ultra-large scale of the mobile IoT. Consequently, our main contribution lies in conceiving a Thing-based Service-Oriented Architecture, that revisits SOA interactions and functionalities, service discovery and composition in particular. We concretize the novel architecture within MobIoT, a middleware solution that is specifically designed to manage and control the ultra-large number of mobile Things in partaking in IoT-related tasks. To assess the validity of our proposed architecture, we provide a prototype implementation of MobIoT and evaluate its performance through extensive experiments that demonstrate the correctness, viability, and scalability of our solution
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Johansson, Ulrika. „Logistisk tillämpning idag : en historisk återblick“. Thesis, University of Skövde, School of Technology and Society, 2007. http://urn.kb.se/resolve?urn=urn:nbn:se:his:diva-1327.
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In the rate of changes condition of the market in shape of increasing competitiveness situation, local as global, this leads to that logistics has to be developed in the same rate. Logistics has been developed from the military and after the war, logistics was figurative to the companies transport- and store problems. After this, logistics had been divided up into four different time phases (the seventies to the 21:th century). All these time phases have together develop the spectacle and focus of the logistics today. Afterward further developing of the logistics approach to Supply Chain Management (SCM) and afterward SCM, Demand Chain Management (DCM) was developed in aim to secure that the right products were manufactured on the basis of the end customers real requirement and wishes.
This paper is taking the aim and problem formulation as a starting point. The problem formulation that I will answer is:
DCM, a new concept or the Emperor New Clothes?
The aim with this paper is that I will examine how the historical developing has lead to the spectacle and application of logistics today. Further is the aim to see which difference and likeness the concept SCM and DCM has, in order to see if there is a further time phase of the logistics development that is in approaching. The aim is also to see how DCM practically can be applying. To be able to reach the aim of this paper, a qualitative procedure has been applied. Further I have done literary studies of theory around chosen problem area and I have done an interview.
Empirical information has been collected by Electrolux AB, which are a world’s leader within manufacturing domestic appliance and corresponding equipment for professional user. The reason why Electrolux were chosen was because they were an early adopter of DCM.
On the basis of the theory that was studyed around chosen problems area and the empirical information that has analysed, I have draught some conclusion to be able to answer the papers problem area and aim. Some of the conclusion I draught is that the historical development and the four time phrases that it includes, is that the four time phrases successive has formed the methods and tools that SCM constitute of. This developing has taken place under the years of the forties century until today, which makes SCM the result of a historical development rather then as a result of new revelationary ideas. Further I draught the conclusion that SCM should be implemented before DCM. I draught the conclusions that Electrolux apply DCM in a way that they has succeed too apply the theory that is described about DCM, but Electrolux has made an own interpretation of the concept. Via implement the analysis around the papers problem area and aim I consider that DCM is a variant of SCM, where the tool consumer insight is applying. On the basis of this I draught the conclusion that there isn’t sufficient that separate DCM from SCM to be able to approaching that DCM is a new time phrase in the logistical development.
Ändrade förhållanden på marknaden i form av ökande konkurrens har lett till att logistiken måste utvecklas i samma takt. Logistik utvecklades från det militära och har efter andra världskriget överförts och börjat tillämpas på företagens transport- och lagringsproblem. Logistik har därefter delats in i fyra olika tidsfaser (1960-2000-talet) och det är dessa tidsfaser som sedan har utvecklats till dagens synsätt och fokus inom logistik. Därefter utvecklades Supply Chain Management (SCM) och på senare tid även Demand Chain Management (DCM).
Denna uppsats tar sin utgångspunkt i uppsatsens syfte och problemformulering. Den problemformulering som jag vill besvara med denna uppsats är:
DCM, nytt koncept eller Kejsarens Nya Kläder?
Syftet med denna uppsats är att jag vill undersöka hur den historiska utvecklingen lett fram till dagens syn och tillämpning av logistik. Vidare är syftet att se vilka skillnader och likheter koncepten SCM och DCM har för att därigenom kunna se om ytterligare en fas i logistikens utveckling är i antågande samt se hur DCM praktiskt kan tillämpas. För att uppnå syftet med uppsatsen har ett kvalitativt tillvägagångssätt tillämpats. Litterära studier har genomförts av teori kring valt problemområde samt en intervju. Empiriska data har samlats in på Electrolux AB som är en världsledande tillverkare av hushållsmaskiner och motsvarande utrustning för professionell användning. Anledningen till att Electrolux valdes för att göra empiriska studier på, var för att de i ett tidigt skede tillämpade DCM. Utifrån den teori som studerats kring valt problemområde samt utifrån de empiriska data som samlats in och analyserats har även ett antal slutsatser kunnat dras för att kunna besvara uppsatsens problemformulering och syfte. Jag har bland annat dragit slutsatsen att det är logistikens utveckling och dess tidsfaser, som successivt format de metoder och verktyg som SCM utgörs av. Denna utveckling har skett under åren från 1940-talet fram till idag, vilket gör att SCM är resultatet av en successiv utveckling snarare än resultatet av nya revolutionerande idéer. Vidare drar jag slutsatsen att DCM bör föregås av SCM. Slutsatser kring hur Electrolux tillämpar DCM är att de lyckats med att tillämpa den teori som finns beskrivet om DCM, fastän företaget har gjort en egen version av konceptet. Via genomförd analys kring uppsatsens problemformulering och syfte anser jag att DCM är en variant av SCM, där verktyget consumer insight tillämpas. Utifrån detta drar jag slutsatsen att DCM inte skiljer sig tillräckligt mycket från SCM för att kunna utgöra en ny fas i den logistiska utvecklingen.
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McFaddin, Andrew S. „Psychosocial Concerns of Patients with Dilated Cardiomyopathy“. The Ohio State University, 2016. http://rave.ohiolink.edu/etdc/view?acc_num=osu1459584917.
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Marguet, Sylvie. „Etude theorique et experimentale de la relaxation des etats excites du colorant laser dcm. Transfert d'electron intramoleculaire et photoisomerisation. Effets de solvant“. Paris 11, 1992. http://www.theses.fr/1992PA112022.
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Cette etude du colorant laser styrenique 4-(dicyanomethylene)-2-methyl-6-p-(dimethylamino) styryl-4h-pyrane ou dcm nous a permis de caracteriser la nature des premiers etats electroniques et l'influence du solvant sur les efficacites des differents processus de relaxation du premier etat excite s1 du dcm. Le dcm qui possede un groupe donneur d'electron conjugue par une serie de doubles liaisons avec un groupe accepteur d'electron presente d'interessantes proprietes de transfert de charge intramoleculaire et de photoisomerisation qui dependent grandement de la polarite du solvant. Afin de caracteriser ces deux processus elementaires, nous avons utilise deux approches complementaires. 1) experimentalement, les constantes de vitesse des differentes voies de desactivation de l'etat s1 ont ete determinees en mesurant les rendements quantiques de fluorescence, les rendements quantiques de photoisomerisation et les durees de vie de fluorescence du dcm dans une vingtaine de solvants de polarite croissante; 2) des calculs de chimie quantique du type cs/indo/mrci nous ont permis d'obtenir les courbes d'energie potentielle, les repartitions de charge et les moments dipolaires des premiers etats electroniques du dcm en considerant tous les changements de conformation pouvant eventuellement etre impliques dans les differents processus de relaxation de l'etat excite s1
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„Interworking Methodologies for DCOM and CORBA“. East Tennessee State University, 2003. http://etd-submit.etsu.edu/etd/theses/available/etd-1104103-205221/.
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Brooker, Dawn J. R., und Claire A. Surr. „Dementia Care Mapping (DCM): initial validation of DCM 8 in UK field trials“. 2006. http://hdl.handle.net/10454/3947.
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NoObjectives This paper describes DCM 8 and reports on the initial validation study of DCM 8. Methods Between 2001-2003, a series of international expert working groups were established to examine various aspects of DCM with the intention of revising and refining it. During 2004-2005 the revised tool (DCM 8) was piloted in seven service settings in the UK and validated against DCM 7th edition. Results At a group score level, WIB scores and spread of Behavioural Category Codes were very similar, suggesting that group scores are comparable between DCM 7 and 8. Interviews with mappers and focus groups with staff teams suggested that DCM 8 was preferable to DCM 7th edition because of the clarification and simplification of codes; the addition of new codes relevant to person-centred care; and the replacement of Positive Events with a more structured recording of Personal Enhancers. Conclusions DCM 8 appears comparable with DCM 7th edition in terms of data produced and is well received by mappers and dementia care staff.