Teses / dissertações sobre o tema "Dynamic property"
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Xia, Yunkai. "Dynamic property evaluation of frother". Morgantown, W. Va. : [West Virginia University Libraries], 2000. http://etd.wvu.edu/templates/showETD.cfm?recnum=1743.
Texto completo da fonteTitle from document title page. Document formatted into pages; contains x, 89 p. : ill. Vita. Includes abstract. Includes bibliographical references (p. 62-64).
Tsui, King Yuen. "Experimental characterizations of the dynamic property changes in aged sands /". View abstract or full-text, 2007. http://library.ust.hk/cgi/db/thesis.pl?CIVL%202007%20TSUI.
Texto completo da fonteLAZOR, DANIEL R. Jr. "CONSIDERATIONS FOR USING THE DYNAMIC INERTIA METHOD IN ESTIMATING RIGID BODY INERTIA PROPERTY". University of Cincinnati / OhioLINK, 2004. http://rave.ohiolink.edu/etdc/view?acc_num=ucin1093047356.
Texto completo da fonteSpitzner, Matthew James. "Response of tin whiskers to dynamic input mathematical modeling and experimental property measurement /". [Ames, Iowa : Iowa State University], 2009. http://gateway.proquest.com/openurl?url_ver=Z39.88-2004&rft_val_fmt=info:ofi/fmt:kev:mtx:dissertation&res_dat=xri:pqdiss&rft_dat=xri:pqdiss:1464391.
Texto completo da fonteBoonpratatong, Amaraporn. "Motion prediction and dynamic stability analysis of human walking : the effect of leg property". Thesis, University of Manchester, 2013. https://www.research.manchester.ac.uk/portal/en/theses/motion-prediction-and-dynamic-stability-analysis-of-human-walking-the-effect-of-leg-property(f36922af-1231-4dac-a92f-a16cbed8d701).html.
Texto completo da fonteDuning, Madeline Marie. "Processing-Structure-Property Relationships of a Polymer-Templated Cholesteric Liquid Crystal Exhibiting Dynamic Selective Reflection". University of Dayton / OhioLINK, 2012. http://rave.ohiolink.edu/etdc/view?acc_num=dayton1354899969.
Texto completo da fonteCarsí, Rosique Marta. "Molecular mobility. Structure-property relationship of polymeric materials". Doctoral thesis, Universitat Politècnica de València, 2016. http://hdl.handle.net/10251/59460.
Texto completo da fonte[ES] En este trabajo se presenta un estudio de la influencia de la estructura química de los polímeros en su comportamiento térmico, mecánico y dieléctrico. Las técnicas experimentales empleadas para ello han sido la calorimetría diferencial de barrido, el análisis dinamo-mecánico y la espectroscopia dieléctrica. Adicionalmente, se han empleado otras técnicas como la difracción de rayos, con objeto de corroborar los resultados obtenidos por las primeras. En los Capítulos 1 y 2 se recoge la introducción y los objetivos, respectivamente. El Capítulo 3 presenta una breve descripción de las técnicas experimentales empleadas. En el Capítulo 4 se recogen los resultados obtenidos en el análisis comparativo de la respuesta a campos de perturbación eléctrica en un amplio rango de frecuencias y temperaturas para tres polimetacrilatos de bencilo con dos grupos dimetoxi en posiciones 2,5-, 2,3- y 3,4-. Los resultados obtenidos señalan el importante efecto de la posición de los grupos dimetoxi en el anillo aromático, sobre la dinámica molecular del polimetacrilato de bencilo. Los espectros obtenidos fueron muy complejos, por ello en orden a llevar a cabo un mejor análisis se emplearon métodos numéricos para la transformación tiempo-frecuencia que incluyeron el uso de técnicas de regularización paramétrica. Se ha estudiado el efecto que dicho cambio estructural ejerce tanto sobre los procesos de relajación secundaria como sobre el proceso de relajación α, relacionado con la transición vítrea. Así mismo, se ha analizado el efecto de la posición de los grupos dimetoxi en la formación de iii nanodominios en los que predominan las cadenas laterales, y su efecto en los procesos de conducción de los materiales analizados. En el Capítulo 5 se recoge el estudio de la conductividad de líquidos gomosos tomando como modelo el poli (metacrilato de 2,3-dimetoxibencilo), por su peculiar comportamiento. En este capítulo se ha realizado un análisis del principio de superposición tiempo-temperatura, empleando para ello diferentes variables relacionadas entre sí. En el Capítulo 6 se recoge el efecto de la presencia de entrecruzante en la movilidad molecular de polimetacrilatos que contienen residuos de éteres de alcoholes alifáticos. En este caso, se ha analizado el efecto de la presencia de entrecruzante tanto en los procesos de relajación secundarios, como en el proceso de relajación principal. También se llevó a cabo un análisis del efecto que la presencia de entrecruzante tiene sobre la creación de nanodominios gobernados por las cadenas laterales.
[CAT] En aquest treball es presenta un estudi de la influència de l'estructura química dels polímers en el seu comportament tèrmic, mecànic i dielèctric. Les tècniques experimentals utilitzades han sigut la calorimetria diferencial de rastreig, l'anàlisi dinamo-mecànic i l'espectroscòpia dielèctrica. Addicionalment, s'han empleat altres tècniques com la difracció de rajos X a fi de corroborar els resultats obtinguts per les primeres. En els Capítols 1 i 2 s'arreplega la introducció i els objectius, respectivament. Al Capítol 3 es presenta una breu descripció de les tècniques experimentals emprades. En el Capítol 4 es recull els resultats obtinguts en l'anàlisi comparativa de la resposta a camps de pertorbació elèctrica en un ampli rang de freqüències i temperatures de tres polimetacrilats de benzil amb dos grups metoxi en posicions 2,5-, 2,3- i 3,4-. Els resultats obtinguts assenyalen l'important efecte de la posició dels grups metoxi en l'anell aromàtic, sobre la dinàmica molecular del polimetacrilat de benzil. Els espectres obtinguts van ser molt complexos, per aquesta raó per a dur a terme un millor anàlisi es van emprar mètodes numèrics per a la transformació temps-freqüència que van incloure l'ús de tècniques de regularització paramètrica. S'ha estudiat l'efecte que el dit canvi estructural exerceix tant sobre els processos de relaxació secundària com sobre el procés de relaxació , relacionat amb la transició vítria. Així mateix, s'ha analitzat l'efecte de la posició dels grups metoxi en la formació de nanodominis en els que predominen les cadenes laterals, i el seu efecte en els processos de conducció dels materials analitzats. En el Capítol 5 s'arreplega l'estudi de la conductivitat de líquids gomosos prenent com a model el poli-(metacrilat de 2,3-dimetoxibencilo), pel seu peculiar comportament. En aquest capítol s'ha realitzat un anàlisi del principi de superposició temps-temperatura, emprant per a això diferents variables relacionades entre sí. En el Capítol 6 s'arreplega l'efecte de la presència d'entrecreuat en la mobilitat molecular de polimetacrilats que contenen residus d'èters d'alcohols alifàtics. En aquest cas, s'ha analitzat l'efecte de la presència d'entrecreuat tant en els processos de relaxació secundaris, com en el procés de relaxació principal. També es va dur a terme un anàlisi de l'efecte que la presència d'entrecreuat químic té sobre la creació de nanodominis governats per les cadenes laterals.
Carsí Rosique, M. (2015). Molecular mobility. Structure-property relationship of polymeric materials [Tesis doctoral no publicada]. Universitat Politècnica de València. https://doi.org/10.4995/Thesis/10251/59460
TESIS
Premiado
Pu, Ming. "Pricing in the actuarial market". Columbus, Ohio : Ohio State University, 2007. http://rave.ohiolink.edu/etdc/view?acc%5Fnum=osu1180097795.
Texto completo da fontePolat, Onur. "Dynamic Complex Hedging And Portfolio Optimization In Additive Markets". Master's thesis, METU, 2009. http://etd.lib.metu.edu.tr/upload/2/12610441/index.pdf.
Texto completo da fontepower-jump assets&rdquo
based on the power-jump processes of the underlying Additive process. Then, the hedging portfolio for claims whose payoff function depends on the prices of the stock and the power-jump assets at maturity is derived. In addition to the previous completion strategy, it is also shown that, using a static hedging formula, the market can also be completed by considering portfolios with a continuum of call options with different strikes and the same maturity. What is more, the portfolio optimization problem is considered in the enlarged market. The optimization problem consists of choosing an optimal portfolio in such a way that the largest expected utility of the terminal wealth is obtained. For particular choices of the equivalent martingale measure, it is shown that the optimal portfolio consists only of bonds and stocks.
Schmolke, Willi [Verfasser]. "Structure–Property Relationships in Polymer Systems: From Functional Microgels to Dynamic Polymer Solutions and Melts / Willi Schmolke". Mainz : Universitätsbibliothek der Johannes Gutenberg-Universität Mainz, 2020. http://d-nb.info/1224896394/34.
Texto completo da fonteTwier, Abdulhamied Moktar. "Microstructure/property relationships in three high strength wrought magnesium alloys based on elektron 675". Thesis, University of Manchester, 2011. https://www.research.manchester.ac.uk/portal/en/theses/microstructure--property-relationships-in-three-high-strength-wrought-magnesium-alloys-based-on-elektron-675(e7f4a6ba-dd07-4845-b2b7-2b2857665085).html.
Texto completo da fonteALGHAMDI, HASAN A. "Dynamic Cone Penetrometer (DCP) Based Evaluation of Sustainable Low Volume Road Rehabilitation Techniques". Ohio University / OhioLINK, 2016. http://rave.ohiolink.edu/etdc/view?acc_num=ohiou1470661119.
Texto completo da fontePetrova, Natalia. "Flexible working as an effective tool of organizational productivity increasing: perspectives of property and staff in Alcatel-Lucent Pte. Ltd". Thesis, KTH, Bygg- och fastighetsekonomi, 2011. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-77018.
Texto completo da fonteUr-Rashid, Md Masud. "Characterization of Dynamic Elastic Modulus and Damping Property of CNx Coating Material by Experimental Modal Analysis and Finite Element Approach". Thesis, KTH, Industriell produktion, 2013. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-138868.
Texto completo da fonteOgbomo, Sunny Minister. "Processing, structure property relationships in polymer layer double hydroxide multifunctional nanocomposites". Thesis, University of North Texas, 2009. https://digital.library.unt.edu/ark:/67531/metadc12174/.
Texto completo da fonteMlynarczyk, Paul John. "The nature and determination of the dynamic glass transition temperature in polymeric liquids". Kansas State University, 2014. http://hdl.handle.net/2097/17782.
Texto completo da fonteDepartment of Chemical Engineering
Jennifer L. Anthony
A polymer has drastically different physical properties above versus below some characteristic temperature. For this reason, the precise identification of this glass transition temperature, T[subscript]g, is critical in evaluating product feasibility for a given application. The objective of this report is to review the behavior of polymers near their T[subscript]g and assess the capability of predicting T[subscript]g using theoretical and empirical models. It was determined that all polymers begin to undergo structural relaxation at various temperatures both nearly above and below T[subscript]g, and that practical assessment of a single consistent T[subscript]g is successfully performed through consideration of only immediate thermal history and thermodynamic properties. It was found that the best quantitative structure-property relationship (QSPR) models accurately predict T[subscript]g of polymers of theoretically infinite chain length with an average error of less than 20 K or about 6%, while T[subscript]g prediction for shorter polymers must be done by supplementing these T[subscript]g (∞) values with configurational entropy or molecular weight relational models. These latter models were found to be reliable only for polymers of molecular weight greater than about 2,000 g/mol and possessing a T[subscript]g (∞) of less than about 400 K.
Kjellin, Mikael. "Structure-Property Relationships of Surfactants at Interfaces and Polyelectrolyte-Surfactant Aggregates". Doctoral thesis, KTH, Chemistry, 2002. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-3299.
Texto completo da fonteThe first part of this thesis is concerned with thestructure-property relationships in nonionic surfactantsystems. The main aim was to investigate how the surfactantstructure influences the adsorption at interfaces andinteractions between surfactant coated interfaces.Particularly, the effect of the structure of the surfactantheadgroups was investigated. These were sugar-based headgroupwith varying size and flexibility and poly(ethylene oxide)based headgroups with or without an additional amide or estergroup. The hydrophobic part of the surfactant consisted mostlyof straight alkyl chains, except for one type of poly(ethyleneoxide) based surfactant with a dehydroabietic hydrophobe.
The main technique that was used is the surface forcetechnique, with which the forces acting between two adsorbedsurfactant layers on hydrophilic or hydrophobic surfaces can bemeasured. These forces are important for e.g. the stability ofdispersions. The hydrophilic surfaces employed were glass andmica, whereas the hydrophobic surfaces were silanized glass andhydrophobized mica. The adsorption behavior on hydrophilicsurfaces is highly dependent on the type of headgroup andsurface, whereas similar results were obtained on the two typesof hydrophobic surfaces. To better understand how the surfaceforces are affected by the surfactant structure, measurementsof adsorbed amount and theoretical mean-field latticecalculations were carried out. The results show that the sugarsurfactant layers and poly(ethylene oxide) surfactant layersgive rise to very different surface forces, but that the forcesare more similar within each group. The structure-propertyrelationships for many other physical properties have beenstudied as well. These include equilibrium and dynamicadsorption at the liquid-vapor interface, micelle size, micelledynamics, and wetting.
The second part in this thesis is about the aggregationbetween cationic polyelectrolytes and an anionic surfactant.The surface force technique was used to study the adsorption ofa low charged cationic polyelectrolyte on mica, and theaggregation between the adsorbed polyelectrolyte with theanionic surfactant. The aggregation in bulk was studied withturbidimetry, small angle neutron scattering (SANS), and smallangle x-ray scattering (SAXS). An internal hexagonal aggregatestructure was found for some of the bulk aggregates.
Keywords:nonionic surfactant, sugar surfactant,poly(ethylene oxide), amide, ester, polyelectrolyte, SDS,hydrophobic surface, glass surface, mica, adsorption,aggregation, micelle size, surface forces, wetting, dynamicsurface tension, NMR, TRFQ, SANS, SAXS, mean-field latticecalculations.
Engström, Anders, e Toma Sumbasacu. "The length effect on Norway spruce boards : An investigation on indicating properties based on axial dynamic and edgewise bending MOEs". Thesis, Linnéuniversitetet, Institutionen för byggteknik (BY), 2015. http://urn.kb.se/resolve?urn=urn:nbn:se:lnu:diva-49099.
Texto completo da fonteShu, Jiangpeng, e Ziye Zhang. "Damage detection on railway bridges using Artificial Neural Network and train induced vibrations". Thesis, KTH, Bro- och stålbyggnad, 2012. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-99387.
Texto completo da fonteOruc, Sercan. "Modeling The Dynamics Of Creative Industries: The Case Of Film Industries". Master's thesis, METU, 2010. http://etd.lib.metu.edu.tr/upload/12611988/index.pdf.
Texto completo da fonteZhang, Daili. "Multi-agent based control of large-scale complex systems employing distributed dynamic inference engine". Diss., Georgia Institute of Technology, 2010. http://hdl.handle.net/1853/33963.
Texto completo da fonteHayes, Tanya M. "Forest governance in a frontier an analysis of the dynamic interplay between property rights, land-use norms, and agricultural expansion in the Mosquitia Forest corridor of Honduras and Nicaragua /". [Bloomington, Ind.] : Indiana University, 2007. http://gateway.proquest.com/openurl?url_ver=Z39.88-2004&rft_val_fmt=info:ofi/fmt:kev:mtx:dissertation&res_dat=xri:pqdiss&rft_dat=xri:pqdiss:3253638.
Texto completo da fonteTitle from PDF t.p. (viewed Nov. 19, 2008). Source: Dissertation Abstracts International, Volume: 68-02, Section: A, page: 0710. Adviser: Elinor Ostrom.
Bartoll, Arnau Salud. "The specification property in linear dynamics". Doctoral thesis, Universitat Politècnica de València, 2016. http://hdl.handle.net/10251/61633.
Texto completo da fonte[ES] La dinámica de operadores lineales, o simplemente dinámica lineal, estudia las órbitas generadas por las iteraciones de una transformación lineal. La hiperciclicidad es el estudio de los operadores lineales que poseen una órbita densa. Si bien G. D. Birkhoff (en 1929), G. R. MacLane (en 1952) y S. Rolewicz (en 1969) obtuvieron ejemplos de operadores lineales hipercíclicos, podemos fijar el nacimiento de la dinámica lineal en 1982 con la tesis de C. Kitai. Desde entonces muchos matemáticos han contribuido al desarrollo de esta floreciente área del análisis. La dinámica lineal conecta el análisis funcional y la dinámica. Al igual que en sistemas dinámicos clásicos, podemos estudiar la dinámica de operadores lineales desde un punto de vista topológico. En este contexto, hablamos de que un operador tiene la propiedad de especificación (SP). Precisamente, al estudio de la propiedad de especificación en sistemas dinámicos lineales está dedicada la presente tesis doctoral. Una aplicación continua en un espacio métrico satisface la propiedad de especificación si para cualquier familia de puntos podemos aproximar, con una cierta uniformidad, partes de sus órbitas por una sola órbita de un punto periódico. La tesis es un compendio de artículos sobre la propiedad de especificación. Se estructura en cuatro partes precedidas de un capítulo dedicado a introducir la notación, definir los conceptos y enunciar los resultados de ámbito general que van a ser utilizados en el resto de la memoria. Los operadores "shift" (desplazamiento) constituyen una de las clases más importantes, como campo de pruebas, en sistemas dinámicos lineales discretos. Debido a su estructura simple, siempre que se introduce un nuevo concepto en dinámica lineal es habitual comprobarlo sobre shifts ponderados. Por este motivo, en la primera parte de esta memoria, se estudia la propiedad de especificación para operadores desplazamiento unilaterales y bilaterales en espacios l^p ponderados y la relación con otras propiedades dinámicas. En el capítulo 3 se generalizan los resultados sobre la propiedad SP a operadores desplazamiento en F-espacios separables de sucesiones. Un F-espacio es un espacio vectorial, dotado de una F-norma, que es completo con la métrica inducida. La noción de F-norma tiene la ventaja de que permite trabajar como en un espacio de Banach llevando cuidado con la homogeneidad de la norma que ahora no se cumple Los sistemas dinámicos caóticos han recibido gran atención en los últimos años. Un operador lineal es caótico si admite un conjunto denso de puntos periódicos. La propiedad de especificación es una noción de caos (en el sentido topológico) más potente que la debida a Devaney. Otra variante más fuerte que la hiperciclicidad es la hiperciclicidad frequente. Este concepto fue introducido por Bayart y Grivaux motivados por el teorema ergódico de Birkhoff. Un operador es frecuentemente hipercíclico si algún elemento tiene una órbita que corta muy a menudo a cada conjunto abierto no vacío. En el capítulo 4 de esta tesis se estudia con profundidad la propiedad de especificación para operadores lineales y continuos definidos en F-espacios separables. Los resultados que presentamos han sido aceptados para su publicación en J. Math. Anal. Appl. Finalmente, en la cuarta parte de este trabajo, se extiende la propiedad de especificación a semigrupos de operadores fuertemente continuos en espacios de Banach, esto es, C_0-semigrupos. Estos operadores pueden verse como la versión continua del caso discreto correspondiente a las iteraciones de un único operador. Ahora, la labor de los operadores desplazamiento en espacios de sucesiones como clases de prueba la desempeñan los semigrupos de traslación. Al igual que en capítulos anteriores, se estudia la relación de la propiedad SP para C_0-semigrupos con otras propiedades dinámicas.
[CAT] La dinàmica d'operadors lineals, o simplement dinàmica lineal, estudie les òrbites generades per les iteracions d'una transformació lineal. La hiperciclicitat es el estudi dels operadors lineal que posseeixen una òrbita densa. Si bé G. D. Birkhoff (en 1929), G. R. MacLane (en 1952) y S. Rolewicz (en 1969) van obtenir exemples d'operadors lineals hipercíclics, podem fixar el naixement de la dinàmica lineal en 1982 amb la tesi de C. Kitai [68]. Des de llavors molts matemàtics han contribuït al desenvolupament d'esta florent area de l'anàlisi. La dinàmica lineal connecta el anàlisi funcional y la dinàmica. Igual que en sistemes dinàmics clàssics, podem estudiar la dinàmica d'operadors lineals des d'un punt de vista topològic. En eixe context, parlem que un operador té la propietat d'especificació (SP). Precisament, al estudi de la propietat d'especificació en sistemes dinàmics lineals està dedicada la present tesi doctoral. Una aplicació continua en un espai mètric compleix la propietat d'especificació si per a qualsevol família de punts podem aproximar, amb certa uniformitat, parts de les seues òrbites per una sola òrbita d'un punt periòdic. La tesi es un compendi de articles sobre la propietat d'especificació. S'estructura en quatre parts precedides d'un capítol dedicat a introduir la notació, definir els conceptes i enunciar els resultats d'àmbit general que seran utilitzats en la resta de la memòria. Els operadors "shifts" (desplaçaments) constitueixen una de les classes més importants, com a camp de proves, en sistemes dinàmics lineals discrets. Degut a la seua estructura simple, sempre que es introdueix un nou concepte en dinàmica lineal es habitual comprovar-ho sobre shifts ponderats. Per esta raó, en la primera part d'esta memòria, s'estudia la propietat d'especificació per a operadors desplaçament unilaterals i bilaterals en espais l^p ponderats i la relació amb altres propietats dinàmiques. En el capítol 3 es generalitzen els resultats sobre la propietat SP a operadors desplaçament en F-espais separables de successions. Un F-espai es un espai vectorial, dotat d'una F-norma, que és complet amb la mètrica induida. La noció de F-norma té l'avantatge que permet treballar com en un espai de Banach anant en compte amb l'homogeneitat de la norma que ara no es compleix. Els espais l^p amb 0 < p < 1 són exemples de F-espais. Els sistemes dinàmics caòtics han rebut gran atenció en els últims anys. Un operador lineal és caòtic si admet un conjunt dens de punts periòdics. La propietat d'especificació és una noció de caos (en el sentit topològic) més potent que la deguda a Devaney. Una altra variant més forta que la hiperciclicitat és la hiperciclicitat freqüent. Aquest concepte va ser introduït per Bayart i Grivaux motivats per el teorema ergòdic de Birkhoff. Un operador és freqüentment hipercíclic si algun element té una òrbita que talle molt sovint a cada conjunt obert no vuit. En el capítol 4 d'esta tesi se estudie amb profunditat la propietat d'especificació per a operadors lineals i continus definits en F-espais separables. També s'incideix en la connexió de dita propietat amb altres propietats dinàmiques. Els resultats que presentem han estat acceptats per a la seva publicació en J. Math. Anal. Appl. Finalment, en la quarta part d'aquest treball, s'estén la propietat d'especificació a semigrups d'operadors fortament continus en espais de Banach, això és, C_0-semigrups. Aquests operadors poden veure's com la versió continua del cas discret corresponen a les iteracions d'un únic operador; en altres paraules, el paper de les iteracions en el cas discret ho assumeix el paràmetre en el cas continu. Ara, la labor del operadors desplaçament en espais de successions com classes de prova l'exerceixen els semigrups de translació. Igual que en capítols anteriors, s'estudia la relació de la propietat SP per a C0-semigrups amb altres propie
Bartoll Arnau, S. (2016). The specification property in linear dynamics [Tesis doctoral no publicada]. Universitat Politècnica de València. https://doi.org/10.4995/Thesis/10251/61633
TESIS
Beyers, Frederik Johannes Conradie. "The Szemeredi property in noncommutative dynamical systems". Pretoria : [s.n.], 2009. http://upetd.up.ac.za/thesis/available/etd-05242009-145506.
Texto completo da fonteTadlaoui, Samir. "Influence de l'état de la réticulation de la matrice thermodurcissable (soc) sur les propriétés mécaniques des matériaux composites obtenus : expérimentation et modélisation". Saint-Etienne, 1994. http://www.theses.fr/1994STET4009.
Texto completo da fonteLee, Seung Geol. "Structure-property relationship of hydrogel: molecular dynamics simulation approach". Diss., Georgia Institute of Technology, 2011. http://hdl.handle.net/1853/44844.
Texto completo da fonteOgunmakin, Cyril A. "Dynamics of knowledge management practices in commercial property business". Thesis, Sheffield Hallam University, 2004. http://shura.shu.ac.uk/20136/.
Texto completo da fonteCheung, Chi-keung Derek. "The dynamics of rental values and prices of Hong Kong property /". Hong Kong : University of Hong Kong, 1998. http://sunzi.lib.hku.hk/hkuto/record.jsp?B19877717.
Texto completo da fonteRendu, Christel. "Studies in macroeconomic dynamics". Thesis, London Business School (University of London), 2000. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.313685.
Texto completo da fonteKatayama, Noriaki. "Studies on Dynamical Systems with Closed Orbit Property". Kyoto University, 1997. http://hdl.handle.net/2433/202341.
Texto completo da fonteSampath, Janani Hall. "Structure-Property Relationships in Model Ionomers from Molecular Dynamics Simulation". The Ohio State University, 2018. http://rave.ohiolink.edu/etdc/view?acc_num=osu152543418206124.
Texto completo da fonteDeng, Weibing. "On the ranking property and underlying dynamics of complex systems". Thesis, Le Mans, 2013. http://www.theses.fr/2013LEMA1010/document.
Texto completo da fonteRanking procedures are widely used to describe the phenomena in many differentfields of social and natural sciences, e.g., sociology, economics, linguistics, demography,physics, biology, etc. In this dissertation, we dedicated to study the ranking propertiesand underlying dynamics embedded in complex systems. In particular, we focused onthe scores/prizes ranking in sports systems and the words/characters usage ranking inhuman languages. The aim is to understand the mechanisms behind these issues byusing the methods of statistical physics, Bayesian statistics and agent-based modeling.The concrete results concern the following aspects.We took up an interesting topic on the scores/prizes ranking in sports systems, andanalyzed 40 data samples in 12 different sports fields. We found the striking similaritiesin different sports, i.e., the distributions of scores/prizes follow the universal powerlaws. We also showed that the data yielded the Pareto principle extensively observedin many social systems: 20% of the players accumulate 80% of the scores and money.For the tennis head-to-head data, we revealed that when two players compete, theprobability that the higher-ranked player will win is related to the rank difference ofthe two opponents. In order to understand the origins of the universal scaling, weproposed an agent-based model, which can simulate the competitions of players indifferent matches, and results from our simulations are consistent with the empiricalfindings. Extensive simulation studies indicate that the model is quite robust withrespect to the modifications of some parameters.Zipf’s law is the major regularity of statistical linguistics that served as a prototypefor the rank-frequency relations and scaling laws in natural sciences. We investigatedseveral English texts, clarified the valid range of Zipf’s law, and found this valid rangeincreases upon mixing different texts. Based on the latent semantic analysis, we proposeda probabilistic model, in which we assumed that the words are drawn into thetext with random probabilities, while their apriori density relates, via Bayesian statistics,to the general features of mental lexicon of the author who produced the text. Ourmodel explained the Zipf’s law together with the limits of its validity, its generalizationto high and low frequencies and hapax legomena. In another work, we specified the rank-frequency relations for Chinese characters. We chose to study the short texts first, since for the sake of the rank-frequency analysis,long texts are just mixtures of shorter, thematically homogenous pieces. Our resultsshowed that the Zipf’s law for Chinese characters perfectly holds for sufficiently shorttexts (few thousand different characters), and the scenario of its validity is similar tothat for short English texts. We argued long Chinese texts display a two-layer, hierarchicstructure: power-law rank-frequency characters (first layer) and the exponentialones (second layer). The previous results on the invalidity of the Zipf’s law for longtexts are accounted for by showing that in between of the Zipfian range and the regionof very rare characters (hapax legomena) there emerges a range of ranks, wherethe rank-frequency relation is approximately exponential. From comparative analysisof rank-frequency relations for Chinese and English, we suggested the characters playfor Chinese writers the same role as the words for those writing within alphabeticalsystems
Cheung, Chi-keung Derek, e 張志強. "The dynamics of rental values and prices of Hong Kong property". Thesis, The University of Hong Kong (Pokfulam, Hong Kong), 1998. http://hub.hku.hk/bib/B31268675.
Texto completo da fonteKurian, Sachin. "Process-Structure-Property Relationship Study of Selective Laser Melting using Molecular Dynamics". Thesis, Virginia Tech, 2020. http://hdl.handle.net/10919/104115.
Texto completo da fonteMaster of Science
Additive Manufacturing's (AM) rise as a modern manufacturing paradigm has led to the proliferation in the number of materials that can be processed, reduction in the cost and time of manufacturing, and realization of complicated part geometries that were beyond the capabilities of conventional manufacturing. Selective Laser Melting (SLM) is a laser-based AM technique which can produce metallic parts from the fusion of a powder-bed. The SLM processing parameters greatly influence the part's quality, microstructure, and properties. The process-structure-property relationship of the SLM process is not well-understood. In-situ experimental investigation of the physical phenomena taking place during the SLM process is limited because of the very small length and time scales. Computational methods are cost-effective alternatives to the challenging experimental techniques. But, the continuum-based computational models are ineffective in modeling some of the important physical processes such as melting, nucleation and growth of grains during solidification, and the deformation mechanisms at the atomistic scale. Atomistic simulation is a powerful method that can offset the limitations of the continuum models in elucidating the underlying physics of the SLM process. In this work, the influence of the SLM process parameters on the microstructure of the Aluminum nano-powder particles undergoing μ-SLM processing and the mechanical deformation characteristics of the unique cellular structures observed in the SLM-fabricated 316L stainless steel are studied using molecular dynamics simulations. Ten passes of the laser beam on three layers of Aluminum nano-powder particles have unfolded the formation mechanisms of a complex microstructure associated with the SLM process. The study on the deformation mechanisms of 316L stainless steel has revealed the contribution of the cellular structures to its superior mechanical properties.
Horne, Kyle S. "Nano-scale Thermal Property Prediction by Molecular Dynamics Simulation with Experimental Validation". DigitalCommons@USU, 2014. https://digitalcommons.usu.edu/etd/3089.
Texto completo da fonteZhu, Boyao. "Identification and metamodeling characterization of singularities in composite, highly dispersive media". Electronic Thesis or Diss., Ecully, Ecole centrale de Lyon, 2024. http://www.theses.fr/2024ECDL0006.
Texto completo da fonteStructural health monitoring (SHM) plays a crucial role in many industrial fields to ensure the safety, reliability, and performance of critical structures. The development of various types of sensors, data analysis, and wireless communication systems, enables the collection in situ of data attesting to the real-time state of structures within the framework of SHM modules helping for more accurate and automated decision-making processes. However, the SHM modules require data basis characterizing safe and damaged structures. Simulations based on numerical modelling such as finite element methods, are often used to construct this data basis. However, this approach is very time-consuming especially when the finite element model is complex, which is often the case due to the increasing complexity of structures. This thesis is within this framework. Indeed, it deals with the problem of efficiently obtaining damage-sensitive features of complex composite structures. More specifically, it aims to define and develop efficient numerical tools helping for SHM of complex composite structures. Hence, model reduction and metamodeling approaches based on the Wave-finite element (WFE) and Kriging methods respectively are proposed and investigated. So, the main objective of the present work is to assess the potential of the combination of the WFE and kriging metamodeling to be useful and efficient in predicting the structural and dynamic characteristics of complex composite structures. This efficiency is quantified by the prediction accuracy and the involved cost. Based on the predicted dynamic properties, some damage-sensitive indicators (such as amplitudes, natural frequencies, phase shifts) are defined and exploited to evaluate the health status of the considered structures.Based on the accomplished studies, it is shown that the proposed strategy, namely the Kriging-based WFEM, can ensure an interesting efficiency resulting in a suitable accuracy of predictions of the structural and dynamical properties while involving a smaller cost than the WFEM-based calculations. Moreover, the proposed strategy has kept the same sensitivity levels of dynamic properties to the considered damages (cracks and delamination) with the associated indexes. The strategy proved to be more efficient when using the adaptive sampling scheme with kriging
Retat, Françoise. "Proper generalized decomposition based dynamic data driven application systems". Ecole centrale de Nantes, 2013. http://www.theses.fr/2013ECDN0025.
Texto completo da fonteNowadays, in simulation-based engineering science, the need of real-time responses is felt more than ever. Dynamic Data-Driven Application systems -DDDAS, thanks to the linkage of the simulation tools with the measurement devices, enable us to achieve real-time computation. But to do so, DDDAS need accurate and fast simulation tools. The solution presented here consists in first computing once and for all, off-line the model's most general solution, introducing all the parameters as extra-coordinates. This abacus is then considered for the on-line purposes. But this, in turn, raises the issue of highly multidimensional spaces. The Proper Generalized Decomposition technique, thanks to its separated representation, allows circumventing this redoubtable curse. The focus of this work is to explore some possibilities in the context of parameter estimation, verification and control in real time. The application of this research is the development of a new boundary control method, i. E. Laminar-flow control over an airfoil. This new approach is associated with the unsteady surface heating regime using electrically resistant strips embedded in the wing skin. The control of the boundary layer separation and transition will provide a reduction in friction drag, and hence a reduction in the fuel consumption, which would comply with the ACARE 2020 requirements
Peng, Ti-Cheng. "Mainstream versus heterodox perspectives on the dynamics of the Brisbane residential property market, 1998-2003 /". St. Lucia, Qld, 2004. http://www.library.uq.edu.au/pdfserve.php?image=thesisabs/absthe18096.pdf.
Texto completo da fonteFalcão, Rui Pedro Preto Fernandes. "Cobertura de ativos imobiliários através de contratos futuros e taxa de inflação". Master's thesis, Instituto Superior de Economia e Gestão, 2013. http://hdl.handle.net/10400.5/6533.
Texto completo da fonteO presente estudo tem por objetivo avaliar a potencialidade de aplicar estratégias de cobertura de risco contra a desvalorização de ativos imobiliários de 4 diferentes tipos (industriais, comerciais, escritórios e de todo o tipo de imóveis), com a utilização de produtos derivados (contratos de futuros) e/ou com a utilização de produtos intimamente dependentes da taxa de inflação. O estudo foi realizado para o mercado inglês com dados de frequência mensal para um período de análise que vai desde 01 de janeiro de 1990 a 31 de dezembro de 2010. A medida utilizada nesta pesquisa para verificar a potencialidade de cobertura dos instrumentos enunciados anteriormente é o coeficiente de correlação condicional na forma constante ρ(CCC) e na forma dinâmica ρ(DCC) existente entre os valores dos retornos dos ativos imobiliários e os valores dos retornos dos contratos de futuros e/ou os valores da taxa de inflação. O coeficiente de correlação condicional dinâmico será calculado seguindo-se a metodologia desenvolvida por Robert F. Engle, ver Engle (2002). Mediante os resultados encontrados, onde o valor do coeficiente de correlação condicional na forma constante ρ(CCC) nunca ultrapassou o valor 0,021 para o caso dos contratos de futuros e 0,129 para a inflação e na forma dinâmica ρ(DCC) o valor máximo obtido foi de 0,272 para os contratos de futuros e para a taxa de inflação foi de 0,208, conclui-se que tanto os contratos de futuros analisados como a taxa de inflação, não apresentam o necessário potencial para o estabelecimento de estratégias de cobertura de risco contra a desvalorização dos preços dos diferentes tipos de imóveis estudados. O risco de correlação é muito elevado o que implica estratégias de cobertura muito pouco eficazes. Esta conclusão é válida e aplicável para o mercado Inglês em análise.
This study aims to evaluate the potential of implementing strategies for hedging against the devaluation of real estate assets of four different types (industrial, commercial, offices and all types) with the use of derivatives (plain vanilla futures contracts) and or the use of products who depend on the rate of inflation. The study was conducted for the English market with frequency monthly data analysis for a period ranging from 1 January 1990 to 31 December 2010. The measure used in this study to verify the potential coverage of the instruments listed above is the constant correlation coefficient conditional ρ(CCC) and the dynamic correlation coefficient conditional ρ(DCC) existing between the returns of real estate assets and the independent variables the returns of futures contracts and the value of inflation rate. The dynamic conditional correlation coefficient is calculated following the methodology developed by Robert F. Engle, see Engle (2002). From the results obtained, where the value of the constant correlation coefficient conditional never exceeded the value 0,021 for the case of futures contracts and 0,129 for inflation tax, and the dynamic coefficient the maximum value obtained was 0,272 for the futures contracts and for inflation rate was 0,208, it is concluded that both, futures contracts as the rate of inflation, do not exhibit the potential to establish strategies of hedging against the devaluation of the prices of different types of properties studied, because the correlation risk is very high. This conclusion is valid and applicable to the market examined that is English market.
Alamgir, Fariba. "Land politics in Chittagong Hill Tracts of Bangladesh : dynamics of property, identity and authority". Thesis, University of East Anglia, 2017. https://ueaeprints.uea.ac.uk/66964/.
Texto completo da fonteLee, Seung Han. "Material property estimation method using a thermoplastic pyrolysis model". Link to electronic thesis, 2005. http://www.wpi.edu/Pubs/ETD/Available/etd-121905-033150/.
Texto completo da fonteKeywords: material property; thermometer; cone calorimeter; finite difference method; thermoplastic; pyrolysis model; fire dynamics simulators Includes bibliographical references. (p.162-163)
Canestrari, Giovanni. "On the Kolmogorov property of a class of infinite measure hyperbolic dynamical systems". Master's thesis, Alma Mater Studiorum - Università di Bologna, 2021. http://amslaurea.unibo.it/22352/.
Texto completo da fonteFortin, Marie. "Expressivité de la logique du premier ordre, de la logique dynamique propositionnelle sans étoile et des automates communicants". Electronic Thesis or Diss., université Paris-Saclay, 2020. http://www.theses.fr/2020UPASG046.
Texto completo da fonteThis thesis is concerned with the expressive power of first-order logic and other formalisms over different classes of ordered structures, among which MSCs (Message Sequence Charts), a standard model for executions of message-passing systems. This study is motivated by two classic problems: the k-variable property, that is, the equivalence of first-order logic and its k-variable fragment over certain classes of structures, and the study of logic-automata connections, in the spirit of Büchi-Elgot-Trakhtenbrot theorem. Our approach relies on star-free propositional dynamic logic (star-free PDL), a variant of PDL with the same expressive power as the 3-variable fragment of first-order logic. We start by studying the expressive power of star-free PDL over linearly ordered structures with unary and binary predicates. We show that under certain monotonicity conditions, star-free PDL becomes as expressive as first-order logic. This implies that any first-order formula can then be rewritten into an equivalent formula with at most 3 variables. This result applies to various natural classes of structures, generalizing several known results and answering some open questions.We then focus on MSCs, to which this first result also applies. We use star-free PDL to address another important problem: the synthesis of communicating finite-state machines (CFMs) from first-order specifications. CFMs are a model of concurrent systems in which a fixed number of finite-state automata communicate through unbounded FIFO channels. They accept languages of MSCs. While logical characterizations of the expressive power of CFMs have been established under different restrictions (bounding the size of the communication channels, or removing the “happened-before” relation from the logic), the following question had remained open in the general case: can every first-order formula over MSCs be translated into an equivalent CFM? We prove that this is the case, using star-free PDL as an intermediate language
Xu, Tao. "The structure-property relation in nanocrystalline materials: a computational study on nanocrystalline copper by Monte Carlo and molecular dynamics simulations". Diss., Georgia Institute of Technology, 2009. http://hdl.handle.net/1853/37108.
Texto completo da fonteSamiloglu, Andac Tore. "Export Dynamics, Size And Productivity Of Firms". Master's thesis, METU, 2003. http://etd.lib.metu.edu.tr/upload/12609087/index.pdf.
Texto completo da fonteYang, Youhong. "The rationalities of irrational behaviours : the dynamics of the owner-occupied residential property process in Shenzhen, China". Thesis, University of Sheffield, 2014. http://etheses.whiterose.ac.uk/6925/.
Texto completo da fonteDavies, Gareth. "Tent-maps, two-point sets, and the self-Tietze property". Thesis, University of Oxford, 2011. http://ora.ox.ac.uk/objects/uuid:6aaa0726-062a-428c-8dbe-03754c4d5448.
Texto completo da fonteGauthier-Campbell, Catherine. "Regulation of filopodia dynamics is critical for proper synapse formation". Thesis, University of British Columbia, 2008. http://hdl.handle.net/2429/722.
Texto completo da fonteAlcaraz, Barrera Rafael. "Topological and symbolic dynamics of the doubling map with a hole". Thesis, University of Manchester, 2014. https://www.research.manchester.ac.uk/portal/en/theses/topological-and-symbolic-dynamics-of-the-doubling-map-with-a-hole(b6f17b43-5285-4e35-883a-baf4708993bc).html.
Texto completo da fonteRitter, Yvonne [Verfasser], Karsten [Akademischer Betreuer] Albe e Gerhard [Akademischer Betreuer] Wilde. "Molecular Dynamics Simulations of Structure-Property Relationships in Cu-Zr Metallic Glasses / Yvonne Ritter. Betreuer: Karsten Albe ; Gerhard Wilde". Darmstadt : Universitäts- und Landesbibliothek Darmstadt, 2012. http://d-nb.info/1106256514/34.
Texto completo da fonte