Dissertationen zum Thema „Micro-Macro models“
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Dias, Fernandes Lucas. „From micro to macro : spatial models in molecular and evolutionary biology“. Thesis, University of Aberdeen, 2016. http://digitool.abdn.ac.uk:80/webclient/DeliveryManager?pid=229716.
Der volle Inhalt der QuelleGöktepe, Serdar. „Micro-macro approaches to rubbery and glassy polymers : predictive micromechanically-based models and simulations“. Stuttgart Institut für Mechanik (Bauwesen) der Universität Stuttgart, 2007. http://elib.uni-stuttgart.de/opus/volltexte/2007/3342/.
Der volle Inhalt der QuelleGauntt, Stephen Byron. „Micro-chamber filling experiments for validation of macro models with applications in capillary driven microfluidics“. [College Station, Tex. : Texas A&M University, 2007. http://hdl.handle.net/1969.1/ETD-TAMU-2538.
Der volle Inhalt der QuelleTian, Kun. „Essays on price rigidity in the UK : evidence from micro data and implications for macro models“. Thesis, Cardiff University, 2012. http://orca.cf.ac.uk/49986/.
Der volle Inhalt der QuelleGöktepe, Serdar [Verfasser]. „Micro-macro approaches to rubbery and glassy polymers : predictive micromechanically-based models and simulations / vorgelegt von Serdar Göktepe“. Stuttgart : Inst. für Mechanik (Bauwesen), 2007. http://d-nb.info/99705350X/34.
Der volle Inhalt der QuelleJonsson, Gabriel, Louise Fredriksson und Miljevic Rebecca Lööv. „Exploring how Barriers to Circular Business Models can be Overcome on a Macro and Micro Level : -a Swedish Textile Industry Perspective“. Thesis, Internationella Handelshögskolan, Jönköping University, IHH, Företagsekonomi, 2020. http://urn.kb.se/resolve?urn=urn:nbn:se:hj:diva-49143.
Der volle Inhalt der QuellePANSINI, ROSARIA VEGA. „Lo studio dell'impatto delle politiche sulla distribuzione del reddito in una prospettiva micro-macro. Il caso del Vietnam“. Doctoral thesis, Università Cattolica del Sacro Cuore, 2008. http://hdl.handle.net/10280/228.
Der volle Inhalt der QuelleThe aim of this work is to investigate the socio-economic factors that affect in income distribution changes caused by changes in the policy framework in Vietnam during the period of reforms. The adopted methodology analyzes policy induced changes in income distribution both at the micro and the macro level. At the micro level, the analysis of inequality can help identifying the socio-economic factors affecting the level of household expenditure and its distribution and evaluating direct effects of policies. The macro level identifies the structural characteristics of inequality and evaluates also the indirect effects of policies on the personal income distribution. The two analytical tools have been selected have been a supply driven model represented by the microsimulation model and a demand driven model, constituted by the Social Accounting Matrix. The microsimulation model allowed deriving a counterfactual distribution of income and disaggregating change in the Vietnamese income inequality into four effects: price effect, effect of a change in the unobservable component of wages, occupational choice effect and population effect. Using a new technique of decomposition of SAM-based multipliers in 'microscopic' detail, the macro model allowed deriving all the direct and indirect effects of an exogenous shock to personal income distribution.
PANSINI, ROSARIA VEGA. „Lo studio dell'impatto delle politiche sulla distribuzione del reddito in una prospettiva micro-macro. Il caso del Vietnam“. Doctoral thesis, Università Cattolica del Sacro Cuore, 2008. http://hdl.handle.net/10280/228.
Der volle Inhalt der QuelleThe aim of this work is to investigate the socio-economic factors that affect in income distribution changes caused by changes in the policy framework in Vietnam during the period of reforms. The adopted methodology analyzes policy induced changes in income distribution both at the micro and the macro level. At the micro level, the analysis of inequality can help identifying the socio-economic factors affecting the level of household expenditure and its distribution and evaluating direct effects of policies. The macro level identifies the structural characteristics of inequality and evaluates also the indirect effects of policies on the personal income distribution. The two analytical tools have been selected have been a supply driven model represented by the microsimulation model and a demand driven model, constituted by the Social Accounting Matrix. The microsimulation model allowed deriving a counterfactual distribution of income and disaggregating change in the Vietnamese income inequality into four effects: price effect, effect of a change in the unobservable component of wages, occupational choice effect and population effect. Using a new technique of decomposition of SAM-based multipliers in 'microscopic' detail, the macro model allowed deriving all the direct and indirect effects of an exogenous shock to personal income distribution.
Eisman, Elyktra. „GIS-integrated mathematical modeling of social phenomena at macro- and micro- levels—a multivariate geographically-weighted regression model for identifying locations vulnerable to hosting terrorist safe-houses: France as case study“. FIU Digital Commons, 2015. http://digitalcommons.fiu.edu/etd/2261.
Der volle Inhalt der QuelleŠvéda, Pavel. „Simulátor dopravy na pozemních komunikacích“. Master's thesis, Vysoké učení technické v Brně. Fakulta informačních technologií, 2010. http://www.nusl.cz/ntk/nusl-237189.
Der volle Inhalt der QuelleCaruel, Marie. „Thermomechanical characterization and modeling of shape memory alloys - application on 26at%Nb-Ti“. Electronic Thesis or Diss., université Paris-Saclay, 2023. http://www.theses.fr/2023UPAST146.
Der volle Inhalt der QuelleThe behaviour of shape memory alloys is driven by a first-order solid-solid phase transformation taking place at microscopic scales (grain or sub-grain scale). Thanks to their atypical behaviour (shape memory and pseudo-elastic capacities), they are the privileged candidate for many applications. The family most widely used today is that of binary nickel-titanium alloys in stoichiometric proportions. Their high pseudo-elastic capacity (reversible strain from 5% to 10%) has led to their widespread use in the medical field. Today, studies show that nickel is toxic to humans, with an increased risk of cancer. NiTi alloys exhibit a too high mechanical stiffness. Niobium-titanium binary alloys can be a promising alternative.Micro-macro thermo-mechanical characterisation tests need to be developed to gain a better understanding of their behaviour. The next objective is to propose a suitable model capable of reproducing the behaviour of these alloys as closely as possible, while ensuring simple identification of the material parameters
VIALE, NICOLA. „A new flat jack test for evaluating shear properties on unreinforced masonry“. Doctoral thesis, Politecnico di Torino, 2020. http://hdl.handle.net/11583/2846617.
Der volle Inhalt der QuelleJohansson, Annelie. „Claims Reserving on Macro- and Micro-Level“. Thesis, KTH, Matematisk statistik, 2015. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-173113.
Der volle Inhalt der QuelleTre reservsättningsmetoder jämförs på två dataset. De första två metoderna är den välkända chain ladder-metoden som använder sig av aggregerade utbetalningar samt den relativt nya metoden double chain ladder som förutom utbetalningarna använder sig av antalet anmälda skador. Den tredje metoden baseras på mikro-nivå och kräver information om varje enskild skada, såsom anmälningstid och antalet utbetalningsperioder. De två dataseten som används är ett som innehåller skador med typiskt kortare avvecklingstider och ett som innehåller skador med typiskt längre avvecklingstider. Frågorna som behandlas är om man vinner något på att använda en mer avancerad metod än chain ladder och om det skiljer sig åt mellan dataseten. Metoderna jämförs genom simulering av reserven, men också genom att jämföra punktskattningar med den verkliga reserven. Resultaten visar att man I detta fall inte vinner något på att använda mikro-metoden. Double chain ladder å andra sidan presterar bättre än chain ladder. Skillnaden mellan de två dataseten är att det är svårare att estimera reserven när avvecklingstiden är längre, men ingen skillnad ses när det gäller val av metod
Louis, Maryse. „Migration-development nexus : macro and micro empirical evidence“. Thesis, Aix-Marseille, 2013. http://www.theses.fr/2013AIXM1084/document.
Der volle Inhalt der QuelleThis thesis is concerned with the causal and complex relation between migration and development. A timely subject, especially with increasing flows of migrants and the remittances these migrants send home. Both the theoretical and empirical literature reviews address the complexity of this relation but consensuses on the causes and impacts of migration on development are generally inconclusive. On the causes of migration, our first empirical estimation shows that migration is part of the development process and not a simple result of its low levels: the increasing development level of the home countries increase the aspirations and capabilities of their populations and if these are faced with lack of opportunities at home, individuals seek migration provided they have the right capabilities (skills required, financial means, migration policies, etc.). On the impact of migration, our second empirical estimation gives evidence of a positive impact through remittances on the development of the home countries. The models show the positive contributions of remittances towards development through two main channels: capital investment and human capital (education and health). These two channels are believed to achieve long-term development of the home countries. At the micro level, we look at the mechanism of this impact at the household level, addressing the case study of Egypt. Our third models give evidence of the importance of these remittances in increasing both education and health status of the recipients’ households’. These findings are believed to make a contribution towards the understanding of this complex relation between migration and development
GAGLIARDINI, ELISA. „Essays on internal migration determinants. From a macro to a micro approach“. Doctoral thesis, Università degli Studi di Cagliari, 2016. http://hdl.handle.net/11584/266706.
Der volle Inhalt der QuelleDaqaq, Mohammed F. „Adaptation of Nontraditional Control Techniques to Nonlinear Micro and Macro Mechanical Systems“. Diss., Virginia Tech, 2006. http://hdl.handle.net/10919/28466.
Der volle Inhalt der QuellePh. D.
Lam, Louisa Mei Chun. „A micro-macro sense-making model for knowledge creation and utilization in healthcare organizations“. Thesis, Aberystwyth University, 2014. http://hdl.handle.net/2160/e883e736-b60e-408d-9dc4-c89095e97dce.
Der volle Inhalt der QuelleLyon, Scott M. „The pseudo-rigid-body model for dynamic predictions of macro and micro compliant mechanisms /“. Diss., CLICK HERE for online access, 2003. http://contentdm.lib.byu.edu/ETD/image/etd219.pdf.
Der volle Inhalt der QuelleLyon, Scott Marvin. „The Pseudo-Rigid-Body Model for Dynamic Predictions of Macro and Micro Compliant Mechanisms“. BYU ScholarsArchive, 2003. https://scholarsarchive.byu.edu/etd/82.
Der volle Inhalt der QuelleAzihary, Mahamoud. „Ajustement structurel, transformation socio-economique et pauvrete : un modele micro-macro applique a l'ile maurice“. Paris, EHESS, 1995. http://www.theses.fr/1995EHES0072.
Der volle Inhalt der QuelleA micro-macro model combining a macroeconomic sub-model with a computable general equilibrium microeconomic sub-model has been used to assess the effects of some counterfactual economic policies during the stabilization and structural adjustment period in mauritius (1981-1987). It is shown that on the one hand, selectivity in the implementation of the orthodox programmes enables one to adapt to the socio-economic structures in order to control the level of poverty while seeking to achieve financial balances, and on the other hand, human capital accumulation might be the key element that permitted to raise in mauritius the dichotomy observed in most of the subsaharan african countries between orthodox programmes and the long run objectives of a development based on socio-economic transformation
Gholami, Mohammad Sadegh. „Development of innovative passive polyurethane foam with higher absorption and/or insulation performance“. Thèse, Université de Sherbrooke, 2017. http://hdl.handle.net/11143/10532.
Der volle Inhalt der QuelleAbstract : Highly porous polyurethane (PU) foams are widely used in different industries to dissipate the energy of sound and vibration waves. Propagation of acoustic waves in such poroelastic materials is explained based on a set of physical parameters known as the Biot's parameters (for isotropic materials these are comprised of 5 non-acoustical parameters and 4 mechanical parameters). These macroscopic properties are inherently dependent on the microstructure properties of the foam. Hence, a clear understanding of correlations between the internal structure of PU foams and their Biot's parameters and the contribution of each parameter, either microscopic or macroscopic, to classical vibro-acoustic indicators is of utmost interest at the early stage of design and optimization of such poroelastic materials. In consequence, a micro macro model that correlates microstructure properties to macroscopic Biot's parameters is needed. Recently, a model that correlates the microstructure properties of highly porous PU foams to their non-acoustical properties was presented by~\citet{Doutres2011,Doutres2013}. In this study, micro-structure properties (strut length, strut thickness, and open pore content) are first characterized using a Scanning Electron Microscope (SEM). Then, a numerical study is performed to elucidate the effect of open pore content (known as reticulation rate), cell size, and relative density on the mechanical properties of polyurethane foam. Based on this study, an existing analytical model~\cite{Gong2005} that correlates fully reticulated unit cell microstructure properties of PU foams to its mechanical properties is corrected and updated to account for these important parameters. Combined with Doutres’ model, the proposed extension lead to a full micro-macro model for predicting the acoustic performance of PU foams from its microstructure. Using this model, the contribution of the unit cell parameters and effect of their variability on classical vibro-acoustic indicators (absorption and transmission loss) is investigated using a global sensitivity analysis method (FAST). The FAST method is used to identify the impact of microstructure role on, first, the Biot-Allard parameters and, second, on vibro-acoustical indicators of poroelastic polyurethane foams. Based on this sensitivity analysis study, the developed micro-macro model, is used to design both optimum homogeneous foam and functionally graded foams (properties optimally varnish along the thickness of the foam) targeting specific in absorption and/or transmission loss problems. This study opens thus a new door to design innovative PU foams with modified micro-structure and improved vibro-acoustical performance.
Mufti, Mohammed H. A. „An integrative model of macro and micro level factors affecting budgetary control : a cross-cultural study“. Thesis, University of Bristol, 1998. http://hdl.handle.net/1983/262c666c-c78c-4013-95f3-1630313f4d4c.
Der volle Inhalt der QuelleTabbah, Ghada. „L'adhésion du Liban à l'OMC : une évaluation d'impact ex ante macro et micro économique“. Thesis, Sorbonne Paris Cité, 2015. http://www.theses.fr/2015USPCD038/document.
Der volle Inhalt der QuelleAlthough the theoretical and empirical literature studying the effects of the WTO and trade liberalization on the economic performance of countries and the well-being is rich, it remains that there is a lack of consensus on the links trade-growth-poverty. The links are neither simple nor automatic and require to be treated with caution, and to take into account national specificities and the particular context of each country. Hence the special attention given to the Lebanese economy, characterized among others by a chronic trade deficit, and by the second longest WTO accession process, which dates from 1999 and seems far from over. To examine the impacts of Lebanon’s accession to the WTO on macroeconomic variables, a dynamic CGE model is used, and different scenarios are simulated. Using a sequential approach, the general equilibrium analysis is combined with a microsimulation analysis, evaluating the micro-economic impacts on different categories of households, poverty and inequality. The results suggest that the country's accession to the WTO leads to a more favorable economic performances compared to the baseline scenario (especially when the mechanism of the increase in total factor productivity is put into play). It also allows a reduction in poverty and inequality, by improving the situation of unskilled workers
Faure, Gérôme. „Couplage micro/hydro pour la simulation d’ondes de choc et de détonation“. Thesis, Paris Est, 2017. http://www.theses.fr/2017PESC1063/document.
Der volle Inhalt der QuelleThis thesis studies mesoscopic models adapted to the simulation of shock and detonation waves in fluids. These phenomena require systems sufficiently large to observe the complex processes occurring in this context. The aim is thus to increase the accessible time and length scales of microscopic methods, accurate but expensive, while preserving their essential properties. To this end, the multiscale coupling of methods at different resolutions allows to finely describe a specific region, limiting the computational cost. In particular, we study Smoothed Dissipative Particle Dynamics (SDPD) which couples a particle discretization of the Navier-Stokes equations and thermal fluctuations that scale consistently with the resolution. The SDPD equations are reformulated in terms of internal energies, which increases the structural similarity with Dissipative Particle Dynamics with Energy conservation (DPDE). We adapt numerical schemes for DPDE to the context of SDPD in order to ensure energy conservation and stability. We study the statistical properties of SDPD and determine estimators for temperature and pressure. The size consistency in SDPD is established for equilibrium and shock waves, which leads us to propose a multiscale coupling of SDPD at different resolutions. Finally, its physical relevance is illustrated by simulating micro-jetting and detonation waves
Gupta, Sujata. „Carbon dioxide abatement in an empirical model of the Indian economy : an integration of micro and macro analysis“. Thesis, London Business School (University of London), 1995. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.309510.
Der volle Inhalt der QuelleAl, chanti Dawood. „Analyse Automatique des Macro et Micro Expressions Faciales : Détection et Reconnaissance par Machine Learning“. Thesis, Université Grenoble Alpes (ComUE), 2019. http://www.theses.fr/2019GREAT058.
Der volle Inhalt der QuelleFacial expression analysis is an important problem in many biometric tasks, such as face recognition, face animation, affective computing and human computer interface. In this thesis, we aim at analyzing facial expressions of a face using images and video sequences. We divided the problem into three leading parts.First, we study Macro Facial Expressions for Emotion Recognition and we propose three different levels of feature representations. Low-level feature through a Bag of Visual Word model, mid-level feature through Sparse Representation and hierarchical features through a Deep Learning based method. The objective of doing this is to find the most effective and efficient representation that contains distinctive information of expressions and that overcomes various challenges coming from: 1) intrinsic factors such as appearance and expressiveness variability and 2) extrinsic factors such as illumination, pose, scale and imaging parameters, e.g., resolution, focus, imaging, noise. Then, we incorporate the time dimension to extract spatio-temporal features with the objective to describe subtle feature deformations to discriminate ambiguous classes.Second, we direct our research toward transfer learning, where we aim at Adapting Facial Expression Category Models to New Domains and Tasks. Thus we study domain adaptation and zero shot learning for developing a method that solves the two tasks jointly. Our method is suitable for unlabelled target datasets coming from different data distributions than the source domain and for unlabelled target datasets with different label distributions but sharing the same context as the source domain. Therefore, to permit knowledge transfer between domains and tasks, we use Euclidean learning and Convolutional Neural Networks to design a mapping function that map the visual information coming from facial expressions into a semantic space coming from a Natural Language model that encodes the visual attribute description or use the label information. The consistency between the two subspaces is maximized by aligning them using the visual feature distribution.Third, we study Micro Facial Expression Detection. We propose an algorithm to spot micro-expression segments including the onset and offset frames and to spatially pinpoint in each image space the regions involved in the micro-facial muscle movements. The problem is formulated into Anomaly Detection due to the fact that micro-expressions occur infrequently and thus leading to few data generation compared to natural facial behaviours. In this manner, first, we propose a deep Recurrent Convolutional Auto-Encoder to capture spatial and motion feature changes of natural facial behaviours. Then, a statistical based model for estimating the probability density function of normal facial behaviours while associating a discriminating score to spot micro-expressions is learned based on a Gaussian Mixture Model. Finally, an adaptive thresholding technique for identifying micro expressions from natural facial behaviour is proposed.Our algorithms are tested over deliberate and spontaneous facial expression benchmarks
Silva, Vera Lúcia da. „Um modelo para sistemas multiagentes baseado na teoria de sistemas sociais para o estudo do problema da ligação micro-macro“. Instituto Tecnológico de Aeronáutica, 2008. http://www.bd.bibl.ita.br/tde_busca/arquivo.php?codArquivo=594.
Der volle Inhalt der QuelleNyumuyo, Wisdom Winston. „The Environment to Invest in Marketing and Processing of Cocoa : The Case of Ghana; MBA-thesis in marketing“. Thesis, University of Gävle, Department of Business and Economic Studies, 2010. http://urn.kb.se/resolve?urn=urn:nbn:se:hig:diva-6764.
Der volle Inhalt der QuellePurpose: This research work is to discuss the various forces/ factors that affect the business environment of Ghana which impacts investing in marketing and processing of cocoa beans in Ghana. In order to determine or classify Ghana as an attractive destination or otherwise to invest in cocoa marketing and processing there is the need to discuss the prevailing macro business environmental forces which little is known about to investors, managers and policy makers in cocoa trade. These mentioned parties have been under increasing pressures to assess the various forces prevailing in Ghana before considering investing in cocoa marketing and processing in Ghana. The work therefore looks as the various macro environmental factors Political, Economic, Social, Technological, Physical Environment and Legal (PESTEL) forces in Ghana’s business environment which impacts cocoa marketing and processing which makes Ghana an attractive base or otherwise to invest in cocoa marketing and processing.
Research Questions: The specific questions that the research aims at solving are as follows: what are the external and environmental forces that will influence investing in cocoa marketing and processing in Ghana? Is Ghana a safe and attractive base to invest in cocoa marketing and processing?
Research method: In carrying this research I made use of both secondary and primary data. Primary data was gathered through face interviews and administrating questionnaires to illicit response from stakeholders in Ghana’s cocoa. The paper also presents a review of literature on PESTEL which has influence or features in Ghana’s business environment which are important in cocoa marketing and processing.
Research Findings: Empirical findings and review of PESTEL model reported in the work suggests that the PESTEL will impact on the strategy of organizations and policy makers who are into cocoa marketing and processing. Also gives suggestions on how the various environmental forces (PESTEL) will be applied to further improve upon the business environment which makes marketing and processing of cocoa in Ghana attractive.
Research Implications and Limitations: The discussions and analyses of the macro environmental forces prevailing in Ghana’s business environment which impacts cocoa marketing produces a frame work to analyze current threats and opportunities in Ghana’s business environment which impacts cocoa marketing and processing for people contemplating on investing in marketing and processing of cocoa in Ghana as well as other practical lessons for policy makers in cocoa. The work overlooks the micro environmental forces in Ghana that impacts cocoa marketing and processing. Further research into such area will help give an understanding of the micro factors that impact the business environment of Ghana. Also the work has a limited empirical data base as most information gathered were inconsistent and unreliable which raises concerns about investment information. These have been minimized thro3ugh cross checks with primary data.
De, Lauretis Simona. „Modélisation des impacts énergie/carbone de changements de modes de vie. Une prospective macro-micro fondée sur les emplois du temps“. Thesis, Université Paris-Saclay (ComUE), 2017. http://www.theses.fr/2017SACLA022/document.
Der volle Inhalt der QuelleHousehold energy consumption represents a significant share of final energy use, especially when both direct and embodied energy are taken into account. Several academic studies, as well as the recommendations of the United Nations and of non-governmental organisations, suggest that a shift in consumption patterns will be necessary to achieve sustainable development. The aim of our research is to analyse long-term scenarios of changes in lifestyle. We propose a methodology that allows to analyse the macro-economic impacts of these changes, as well as the impacts on energy use and CO2 emissions, while taking into account the heterogeneity of behaviours and energy consumptions among households. Consumption choices do not derive solely from monetary considerations but they are influenced by several factors. One binding constraint, never taken into account in macro-economic energy modelling, is the available time. For this reason, our analysis considers time use data in addition to expenditure and energy use data. We build a data base that combines time use, expenditure and energy consumption data for French households, which provides detailed information about household consumption patterns. Then, for scenario analyses, we link the data base with an Energy-EconomyEmissions model, using an iteration process based on a reweighting technique. We illustrate the methodology by exploring three areas of change in consumption patterns: cooking habits, ecommerce and shared transport (carpooling and car sharing). We obtain CO2 emissions reductions in all scenarios. As an example, emissions decrease by 2.3% by 2050 in the scenario focusing on transport
Williams, Richmond Paul Bowen. „Towards a strategic transcultural model of leadership that enhances Koinonia in urban Southern Africa“. Thesis, Full-text available online as a .pdf file, 2006. http://hdl.handle.net/2263/23874.
Der volle Inhalt der QuelleThesis (PhD (Science of Religion and Missiology))--University of Pretoria, 2007.
Science of Religion and Missiology
PhD
Unrestricted
Parker, Don James. „A study of the macro to micro process of persuasion for advertising in context towards a meso dominant logic model of consumer behaviour“. Thesis, University of South Wales, 2014. https://pure.southwales.ac.uk/en/studentthesis/a-study-of-the-macro-to-micro-process-of-persuasion-for-advertising-in-context-towards-a-meso-dominant-logic-model-of-consumer-behaviour(8a76c8ce-2301-4134-9d8b-489af0136500).html.
Der volle Inhalt der QuelleSissa, G. „FROM MICRO BEHAVIORS TO MACRO EFFECTS - AGENT BASED MODELING OF ENVIRONMENTAL AWARENESS SPREAD AND ITS EFFECTS ON THE CONSUMPTION OF A LIMITED RESOURCE“. Doctoral thesis, Università degli Studi di Milano, 2014. http://hdl.handle.net/2434/233328.
Der volle Inhalt der QuelleBenoit, David. „Divers problèmes théoriques et numériques liés à la simulation de fluides non newtoniens“. Thesis, Paris Est, 2014. http://www.theses.fr/2014PEST1004/document.
Der volle Inhalt der QuelleThis thesis is devoted to the modelling, the mathematical analysis and the simulation of non-Newtonian fluids. Some fluids in an intermediate liquid-solid phase are particularly considered: aging fluids. Modelling scales are macroscopic and mesoscopic. In Chapter 1, we introduce the models and give the main results obtained. In Chapter 2, we present numerical simulations of a macroscopic two-dimensional model. The finite element method used for discretization is described. For the flow past a cylinder test-case, phenomena at play in aging fluids are observed. The Chapter 3 contains a mathematical analysis of the one-dimensional version of the system of partial differential equations used for the simulations. We show well-posedness and investigate the longtime behaviour of the solution. In the last chapter, macroscopic equations are derived from a mesoscopic equation. The mathematical analysis of this mesoscopic equation is also carried out
Ewang, Bruce Ekane. „Estudo de fissuração em concreto armado com fibras e armadura convencional“. Universidade de São Paulo, 1999. http://www.teses.usp.br/teses/disponiveis/18/18134/tde-06122017-154223/.
Der volle Inhalt der QuelleDue to the brittleness of concrete, the control and prevention of cracking in reinforced concrete structures are of prime importance. One way of improving the tensile properties of concrete is by the addition of fibres. The present research is a trial to provide guidelines for the design of fibre reinforced concrete structures under service loads. First of all, a study of the tensile behaviour of the composite material is presented. A probabilistic/fracture mechanics based micromechanical model, capable of predicting the poscracking behaviour of the material is presented. The model predicts the tensile stress-crack width relationship, accounting for the following micromechanisms: fibre and aggregate bridging, fibre rupture, local snubbing, matrix spalling, the Cook-Gordon interface effect, and fibre prestressing. At the structural level, two macromechanical models are presented. One is founded on the classical theory of cracking, while the other, a shear lag model, is founded on the continuum damage mechanics. The first model is adjusted for application to the prevision of crack width and crack spacing in fibre reinforced concrete structures with short discrete and randomly dispersed fibres. It is shown that the micromechanical model fits very well in the macrostructural model. Tensile tests with mortar specimens reinforced with continuous steel wires or meshes and PVA or polypropylene fibres were carried out. The theoretical results predicted by the model were compared with results obtained from the experimental program, and show very good agreement, confirming the validity of the theoretical model.
Johannesson, Christian. „Framgångsfaktorer i en svensk talangutvecklingsmiljö : En kvalitativ fallstudie av handbollens talangutvecklingsmiljö ur ett holistiskt ekologiskt perspektiv“. Thesis, Linnéuniversitetet, Institutionen för idrottsvetenskap (ID), 2015. http://urn.kb.se/resolve?urn=urn:nbn:se:lnu:diva-45574.
Der volle Inhalt der QuelleBy using a case study design this a talent development environment in the team sport of handball. The aim of the study is to examine the interaction and dynamic process between players, coaches and significant others in a Swedish talent development environment. The theoretical framework is Henriksen (2010) working models for studying talent development environment. This study has a qualitative research strategy in the form of interviews and document analysis. The results show similarities with the environment in the handball club and successful talent development environment from other case studies.
Riera, Elisabeth. „Vers une construction raisonnée d’une nouvelle génération de récifs artificiels : Analyses comparatives des facteurs intrinsèques favorisant leur colonisation de la micro à la macro-échelle“. Thesis, Université Côte d'Azur, 2020. http://www.theses.fr/2020COAZ4001.
Der volle Inhalt der QuelleArtificial reefs are submerged structures deliberately placed on the seabed to mimic some characteristics of a natural habitat, they have been used for thousands of years by fishermen to improve their fishing practices and recently they are also used for the protection or even the restoration of certain marine habitats. Despite these various objectives, there is still a lack of scientific fundaments for determining the quality of these submerged structures in order to assess their effectiveness. The present works, focused on the study of their intrinsic characteristics, namely their materials and their structures. A combined monitoring of the biofilm and the macrofouling on different substrates, supplemented by an analysis of their heavy metal content allowed to highlight the quality of certain substrates used for the construction of artificial reefs. Simple monitoring of the biofilm has proven to be an efficient indicator for highlighting these differences to validate the use of a particular substrate.In addition, the development of a method to assess the complexity and heterogeneity of artificial reefs has enabled us to give a relevant classification of the various existing structures. This standardized method will allow to assess in situ the influence of structural parameters of artificial reefs on recruitment, abundance, distribution and/or diversity. A first study at the microscopic scale revealed the influence of substrate structure on both the abundance of biofilm and the photosynthetic activity of these communities.A more precise scientific framework is now available to guide the construction of artificial reefs on the choice of materials and the design of artificial reef structures in order to optimize the effectiveness of artificial reef immersion project
Caldini-Queiros, Céline. „Analyse mathématique et numérique de modèles gyrocinétiques“. Thesis, Besançon, 2013. http://www.theses.fr/2013BESA2013/document.
Der volle Inhalt der QuelleThe main subject of this thesis is the gyro-kinetic equation. We present a rigourousdeveloppement of the Vlasov equation limits with different collision operator in a strongmagnetic field and numerical methods.We start with a study of the gyro-average operator. The average operator has been introduced byM. Bostan in the case of an equation where part of the transport is highly penalised. Then weapply our results at the two approximation we study : the finite Larmor radius approximation andthe guiding-center approximation.We first focus on the precise and explicit computation of the Fokker-Planck-Landau operatoraverage in the finite Larmor radius approximation. The Fokker-Planck-Landau operator containsconvolution and diffusion terms, it is then reasonable to first compute the average of theBoltzmann relaxation operator.We then focus on the guiding-center approximation and present a numerical scheme based on amicro-macro decomposition of the particles distribution fonction which comes from a joint workwith N. Crouseilles and M. Lemou. We obtain a scheme which is uniformly consistant with thecontinuous model for any order of the magnetic field. Numerical simulation based on thisapproach are presented.The last chapter of this thesis presents a project which was realised during the Cemracs 2012concerning the modelisation of blood flow in cerebral veins
Košut, Martin. „Podnikatelský plán pro rozvoj malé společnosti“. Master's thesis, Vysoké učení technické v Brně. Fakulta podnikatelská, 2018. http://www.nusl.cz/ntk/nusl-377964.
Der volle Inhalt der QuelleWang, Yunli. „Etude expérimentale et numérique des oscillations hydrodynamiques en milieux poreux partiellement saturés“. Thesis, Toulouse, INPT, 2010. http://www.theses.fr/2010INPT0127/document.
Der volle Inhalt der QuelleThis thesis aims at investigating experimentally, analytically and numerically, the consequences of hydrodynamic variations and oscillations with high temporal variability in partially saturated porous media. The problems investigated in this work involve “free surfaces” both outside and inside the porous media, the free surface being defined as the “atmospheric” water pressure isosurface (Pwater = Patm). The laboratory experiments studied in this work are, respectively: Lateral imbibition in a dry sand box with significant capillary effects; Transmission of oscillations of the free surface through a vertical sand box placed in a small wave canal (IMFT, Toulouse); Dynamics of free surface oscillations and wave propagation in a large wave canal (HYDRALAB, Barcelona), partially covered with sand, with measurements of both open water and groundwater levels, and of sand topography (erosion / deposition). For theoretical studies, we have developed linearized analytical solutions. Here is a sample problem that was treated analytically in this work: The linearized equation of Dupuit-Boussinesq (DB) for transient free surface flow, assuming horizontal flow and instantaneous wetting/drainage of the unsaturated zone: forced oscillations, wave transmission and dissipation through a rectangular sandbox. We also developed a weakly nonlinear solution of the Dupuit-Boussinesq equation to study the sudden imbibition (temporal monitoring of the wetting front). We have studied the different types of transient flow problems related to the experiments cited above by numerical simulation. In particular, we have simulated unsaturated or partially saturated transient flows in vertical cross-section, using a computer code (BIGFLOW 3D) which solves a generalized version of Richards’ equation. Thus, using the Richards / BIGFLOW 3D model, we have studied numerically the experiment of unsaturated imbibition in a dry sand (IMFT sandbox), and then, with the same model, we have also studied the partially saturated wave propagation experiment in the large Barcelona wave canal (HYDRALAB laboratory), focusing on the sloping sandy beach, with coupling between the micro-porous zone (sand) and the “macro-porous” zone (open water). To interpret the results of the latter experiment and compare them to simulations, we use several methods of signal analyzis and signal processing, such as: Fourier analysis, discrete multi-resolution wavelets (Daubechies), auto and cross-correlation functions. These methods are combined with pre-filtering methods to estimate trends and residuals (moving averages; discrete wavelet analyses). This signal analyzis has allowed us to interpret and quantify water propagation phenomena through a sandy beach. To sum up, different modeling approaches, combined with model calibration procedures, were applied to transient nonlinear coupled flow problems. These approaches have allowed us to reproduce globally the water content distributions and water level propagation in the different configurations studied in this work
Shen, Wei-Ting, und 沈威廷. „A Macro-Micro Mixed Traffic Flow Models based on Cell Transmission Models and Cellular Automaton“. Thesis, 2017. http://ndltd.ncl.edu.tw/handle/97c668.
Der volle Inhalt der Quelle國立交通大學
運輸與物流管理學系
105
The macroscopic traffic flow models which account for the flow rate, density or speed of groups of vehicles on the roads, are advantageous to its high efficiency. On the contrary, the microscopic traffic flow models deal with the stimulation terms to spacing or relative speed between individual vehicles and respond to its acceleration or deceleration. The advantage of them lie in describing detailed vehicle behaviors and high accuracy. Therefore, it is necessary to be confronted with a trade-off between efficiency and accuracy when conducting mixed traffic flow models simulation. This study takes the prevailing mixed traffic of cars and motorcycles on urban streets as the background. Firstly, based on the mixed traffic cell transmission models (MCTM), proposed by C.W. Hsieh (2010), to simulate platoons of vehicles with traffic flow transference within segment cells to reduce simulation time. Secondly, based on the cellular automaton and microscopic lane changing principles in mixed traffic, proposed by Lan et al.(2009、2010), to simulate platoons of vehicles with parallel driving and lane changing behaviors in close proximity to the intersection. In order to make these two models stated above integrate properly, this study develops a macro-micro traffic flow models with a transmission interface design, which combines advantages over both models and takes characteristics of mixed traffic into consideration. Moreover, real data of mixed traffic on urban streets is collected. To obtain all the vehicle trajectories in the experimental segment and calculate numbers of vehicles in each cell at each time step through analyzing them. The proposed model in different scenarios is assumed and divided into seven kinds of macro-micro proportions. The efficiency index is measured by CPU time and accuracy index is by SMAPE values to validate the proposed model. This study puts emphasis on the simulation effectiveness of interfaces in different positions of the segment and tries to find out the best one. The results demonstrate that the macroscopic traffic flow models is conductive to reduce the simulation time and improve efficiency. The microscopic traffic flow models make for accuracy. Under a balanced of efficiency and accuracy, the best position of the interface measured by simulation effectiveness is thirty to sixty meters apart from the intersection. It is supposed to transfer the model from macroscopic to microscopic before the traffic flow is interrupted.
Chung, Chia-yuan, und 鍾嘉原. „The Application of Credit Risk Models on Asset Securitization-Considering the Micro and Macro Factors“. Thesis, 2005. http://ndltd.ncl.edu.tw/handle/11739277781400853437.
Der volle Inhalt der QuelleGajraj, Rhiad. „A Study of Drug Transport in the Vitreous Humor: Effect of Drug Size; Comparing Micro- and Macro-scale diffusion; Assessing Vitreous Models; and Obtaining In Vivo Data“. Thesis, 2012. http://hdl.handle.net/1807/33202.
Der volle Inhalt der QuelleBONFATTI, Andrea. „A micro-macro approach to commodity market analysis:risk, structural modelling and forecasting“. Doctoral thesis, 2012. http://hdl.handle.net/11562/396542.
Der volle Inhalt der QuelleThis work concerns the analysis of primary commodity markets from both a micro and macro perspective and is composed of three parts. In the first part, we investigate how rural households in poor countries, depending for their livelihood on crop production, cope ex-ante with risk through a strategy of a diversified portfolio of crops. To this end, a portfolio model of production is set up from which structural estimates of risk preference and technology parameters are derived. The model is fit to longitudinal data from a sample of coffee producers in Ethiopia. The second part is concerned with the modelling of commodity markets within a rational expectations approach. A special emphasis is placed on perennial crops and a world model for the cocoa market is specified, accounting for speculative stockholding. From the structural model a solved form in price and stocks is derived, using two constructed variables capturing excess supply in the short and long term. The derivation of restrictions stemming from the hypothesized rational expectations by stockholders is then illustrated. Furthermore, an equilibrium analysis of the model is carried out using the price rational expectations solution, in order to investigate the qualitative response of the system to shocks. In the third part, the reduced form in price and stocks previously derived from a short-run version of the model is estimated using annual data on the cocoa market and the rational expectations restrictions are tested. The estimates obtained using the generalized method of moments (GMM) are then compared with those obtained from a restricted vector autoregressive (VAR) model presenting a matching specification.
Sun, Chen-An, und 孫晟安. „A Macro-Micro Model of Mixed Traffic Flow of Cars and Motorcycles“. Thesis, 2013. http://ndltd.ncl.edu.tw/handle/38016193094323304329.
Der volle Inhalt der Quelle國立交通大學
運輸與物流管理學系
101
In light of the level of details, three categories of traffic flow models: macroscopic, mesoscopic, and microscopic, are independently adopted for the trade-off between simulation accuracy and efficiency. The macroscopic models accounting for the behaviors of a group of vehicles are obviously more efficient but less accurate than the microscopic models which replicate the movements of individual vehicles. However, to replicate the traffic movement behaviors along a corridor containing segments with simple traffic behaviors and intersections with complex queuing, weaving and turning behaviors, it is rationale to use of macroscopic models to simulate traffic behaviors moving along segments and use of microscopic models to replicate traffic behaviors approaching intersections for compromising simulation accuracy and efficiency. However, how to determine the optimal location of the interface of macro- and microscopic models and how to design the interfacing mechanism to convert macroscopic flows into microscopic flows are at the heart of the integrated models, namely, the macro-micro models. Furthermore, to acknowledge the prevailing mixed traffics of cars and motorcycles on Asian urban streets, mixed macroscopic and microscopic models are considered. Based on these, this study attempts to develop a macro-micro model which can account for the mixed traffic condition in Taiwan. The novelties of the proposed macro-micro model are threefold: 1) Ability to convert upstream macroscopic traffic flow into downstream microscopic flow. 2) Consideration of the lateral drifts and transverse crossings of motorcycles by determining the jam density and free flow speed according to car-motorcycle density ratio. 3) Consideration of lane changing behaviors at the roads with more than three lanes. To calibrate and validate the proposed models, a video-taking of a three-lane urban street was conducted. Trajectories of all cars and motorcycles within the study segment (300m in length) and intersection were then frame by frame traced and recorded. The performances of the proposed model under various locations of the interface are compared. Accuracy index is measured by the SMAPE values between real and simulated second-flows of cars and motorcycles at different lanes and distances to the intersection. Efficiency index is of course measured by the simulation times. As expected, the closer to the intersection of the interface is, the higher efficiency but the lower accuracy it has. However, the improvement in efficiency and deterioration in accuracy is diminishing as the distance to the intersection decreases. Both flow of cars and motorcycles are well simulated. It is also found that the error rates of simulated motorcycle flows at different lanes are higher than those of simulated car flows. One of the reasons for that may be the influence of turning flow and parallel illegal parking. Furthermore, the error rates at the mid-road section are higher than at the intersection because the traffic flows are restricted by the signal control. The error rates of traffic flows in inner lanes are lower than those of outer lanes because of the prohibition of motorcycles in using the inner lane. Overall, the performance of the proposed model is promising.
Yu, Song-Hua, und 余松樺. „A Probabilistic Approach for Image Categorized Based on Macro and Micro Classification Model“. Thesis, 2015. http://ndltd.ncl.edu.tw/handle/ddbjv3.
Der volle Inhalt der Quelle義守大學
資訊工程學系
103
This issue of image classification has received much attention recently; however, to classify huge amount of images into different categories is hard. For each category, classification system should first analyze features of image, which is described by visual words, and then the classification model is constructed. Finally, a probabilistic classifier is proposed to effectively category images. The proposed algorithm is first collected training samples from the database, and extract image feature by visual patch. In addition, the patch divided into macro words and micro words according to patch content and then macro and micro visual dictionary is constructed. We then build classification models with representative and effective. Finally, the MAP based classifier is developed to classification image correctly. Simulation results show that the categorization scheme achieve surprising performance.
Rodrigues, Rita Vanessa Gouveia. „Transport modelling: macro and micro simulation for the studied case of Funchal“. Master's thesis, 2014. http://hdl.handle.net/10400.13/1032.
Der volle Inhalt der QuelleChang, Hui hsun, und 張惠絢. „The Reaserch of motor influence to Micro-macro model of the Historic Preservation in Taiwan“. Thesis, 2005. http://ndltd.ncl.edu.tw/handle/06612046745136986998.
Der volle Inhalt der Quelle國立高雄應用科技大學
土木工程與防災科技研究所
93
At present Taiwan to correlation of law the Historic Preservation law is insufficient, but retention, the reconstruction regarding the historical site construction and uses again was already the social populace's universal mutual recognition, so the historical site recovering also one after another in accordance to lives. By reference, we know “motor “often use to build ancient construction, the motor which type is many, but the reference not to mentioned how to use and characteristic. Now we have to research about historical site repair, and have to understand how to use motor and it characteristics. We know glutinous rice used to military construction and official hall, and when often used soil to the mortar material on construction folk, and sludge output increase now in Taiwan, under a reject resources problem formulation research atmosphere, surges upward and the resources in the environmental protection consciousness is limited, only the water sludge high economic value resources and the again use is worth promoting. This research draws up take the mortar as the research object, records in the historical site mortar material from the literature, chooses the lime, the brook granulated substance, oyster shell powder, the red syrup and Rice husk ash(RHA) and so on five kind of materials, and the attempt increases after 800 ℃ high temperatures agglutinates only the water sludge, carries on the allocated proportion design, and carries on the compression-test, the endurance test and the microscopic analysis, expected can the affiliation by the experiment, understand six kind of materials best allocated proportion and characteristic, takes reference the historical site correlation recovering. Results of study indicate that both: 1. The syrup congeals the characteristic to cause the work enhancement 70~121%, the hydrated organization to be more compact, beneficial long-term intensity development. 2. Rice husk ash (RHA) characteristic promotion mortar early time compressive strength is 72% 56 th days intensities. 3. The water sludge circle spherical semblance is only similar to 【ball effect】, to increases the work and the plasticity has the help; C-S-H of colloid structure packing hole the continuous causes the hydro mass to be compact, promotion hydro mass later period intensity 508%. 4. The sugar mortar it creates the water-absorptive to be low 4%; The Rice husk ash (RHA) the water characteristic to enhance the water-absorptive; only the water sludge increases the mortar void volume, creates the water-absorptive rise 3%. 5. Maintains at air, the Rice husk ash (RHA) has good bears the alkali ability, the attrition rate compares other two to be low 1~4%, the sugar mortar tries the body to have very well bears the salty degree, the attrition rate reduces 1%; Was mad the dry only water sludge hydro mass resistance acid proof and bears the alkali ability all wet to raise tries the body to enhance 8~9%.
Azarsa, Peiman. „Determination of micro-meso-macro damage mechanisms in geopolymer concrete using non-destructive techniques“. Thesis, 2020. http://hdl.handle.net/1828/12561.
Der volle Inhalt der QuelleGraduate
2021-12-15
DI, TRAPANI FABIO. „Masonry infilled RC frames: Experimental results and development of predictive techniques for the assessment of seismic response“. Doctoral thesis, 2014. http://hdl.handle.net/11583/2673116.
Der volle Inhalt der QuelleMo, Jia-Hao, und 莫家豪. „Applying Hedonic Pricing Model on Housing Price from Both Micro and Macro Perspectives – In the Case of Taipei City“. Thesis, 2013. http://ndltd.ncl.edu.tw/handle/ww3fyw.
Der volle Inhalt der Quelle中華大學
建築與都市計畫學系碩士班
101
The hedonic pricing theory was established in 1974 and has been popularly used since. The wide computer access coverage and the discovery of potential variance that may be caused by using the traditional hedonic pricing method in recent years lead to a trend where the traditional hedonic pricing method is gradually being replaced by the multilevel modeling. The multilevel modeling is not only used in a wider range of applications, but can also proves analysis in terms of variables by level as well as interaction effects between these variables. An abundance of studies was carried out on house pricing using the hedonic pricing method in the past. The housing characteristics, however, were treated as independent and under homogeneous distributions in the past, where the characteristics on a micro level are in fact not independent to and may interfere with the characteristics on a macro level. In the case of auto-regression, the error may lead to biased evaluation results with an inaccurate conclusion drawn. This study applies hierarchical linear modeling on housing price in Taipei City to explore the relationship between dependent and independent variables by level, and the cross-level interaction effects. The results of testing show that the coefficient estimates of micro level explanatory variables of “floor area” and “housing age” both achieve outstanding performance of 5%. This means, for every 1 “Ping” (which is equivalent to approximately 3.305 square meter) increase in floor area, the housing price increases by NTD477,340; and for every 1 year increase in housing age, the housing price decreases by NTD71,860. The macro level variable of “disposable income of individuals” shows the cross-level interaction effect, indicating that this variable interacts with the micro level variable of “floor area”, where for every 1 Ping increase in floor area, the housing price increases by NTD477,340, but on a macro level, for every NTD1 increase in “disposable income of individuals”, the housing price changes increase to NTD799,430.