Dissertationen zum Thema „Dynamique conjugale“
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Barrault, Marion. „Fluctuations émotionnelles, relation conjugale et consommation de substances : une étude en vie quotidienne chez un échantillon de femmes toxicomanes“. Thèse, Bordeaux 2, 2007. http://hdl.handle.net/1866/6345.
Der volle Inhalt der QuelleManceau, Charlotte. „Analyse des dynamiques et processus dyadiques sous-jacents à l'expérience du couple confronté à une maladie neuroévolutive“. Electronic Thesis or Diss., Université de Lille (2022-....), 2024. https://pepite-depot.univ-lille.fr/ToutIDP/EDSHS/2024/2024ULILH020.pdf.
Der volle Inhalt der QuelleNeurodegenerative diseases (NDDs) raise numerous implications for the health, well-being, and quality of life of both the partner with the disease and their caregiving spouses. In the face of these challenges, numerous studies have sought to understand the experiences of these individuals and evaluate the effectiveness of well-being-centered interventions. While individual approaches are important, the literature has underscored the significance of considering the dyad and the relational processes at play, particularly to optimize such interventions. However, while numerous models detail how couples adjust to chronic illness, NDDs are not integrated into these models, except for a few exceptions, indicating the need for further investigation of couple functioning in the context of NDDs. Therefore, the objectives of this thesis were to better understand the experiences of couples and the dyadic processes underlying their functioning, through a meta-synthesis centered on various NDDs (study 1) and two studies and functioning of couples facing Parkinson's disease (PD) (studies 2 and 3). Capturing changes in couple functioning across different stages of the disease was another objective. A thematic synthesis (study 1) and two qualitative empirical studies using Interpretative Phenomenological Analysis (study 2) were conducted. Study 2 explored the experiences of 15 couples at the specific stage known as the honeymoon period of PD. Study 3 involved a comparison of processes identified in three distinct samples of 15 couples, at three stages of PD, to identify prevalent functioning patterns and transitions in couple dynamics throughout the disease progression. Studies 2 and 3 identified five patterns of dyadic functioning, as well as transitions in dyadic dynamics, often linked to symptom progression. Some partners demonstrate mutual support and positive reinterpretation of their experience, evolving towards a dynamic where the caregiver provides subtle assistance to preserve this balance. For others, this discreet help, a subject of negotiation within the couple from the onset of the disease, abruptly transforms into control. While some spouses struggle against the disease from the early stages by exerting a form of control, their partner disengages. With symptom progression, it becomes impossible to avoid this control, which turns into intrusion. Additionally, some couples adopt a rigid hyperprotection against the distress induced by PD, with this avoidance strengthening over time. Finally, another pattern, characterized by difficulty in understanding the other's perspective and by a mutual disengagement shown by partners, also becomes more rigid over time, potentially leading to questioning the couple's relationship. These studies have highlighted different dyadic dynamics and their associated processes within the context of NDDs, specifically PD. The transitions identified in couple functioning throughout the disease progression indicate the importance of considering the couple's experience from the onset of the disease and throughout its evolution. These findings are significant, as they suggest several specificities of dyadic functioning in the face of NDDs. Furthermore, they reveal similarities in processes observed in the context of PD, Alzheimer's disease, or other chronic illnesses. These various aspects are thus important for the development of transdiagnostic interventions and future research aimed at exploring dyadic processes associated with couples' experience of other less studied diseases
Mercier, Emeric. „High-frequency nonlinear dynamics of a laser diode with phase-conjugate feedback“. Thesis, CentraleSupélec, 2016. http://www.theses.fr/2016SUPL0010/document.
Der volle Inhalt der QuelleWe study the influence of phase-conjugate feedback in a laser diode. This type of feedback has not been studied a lot and yet we show here that it can give interesting results. It unlocks oscillations at high frequencies. This could lead to an improvement in the performance of random number generators based on optical chaos
Guérin, François. „Commande conjuguée d'un robot mobile : modélisation dynamique et vision artificielle“. Le Havre, 2004. http://www.theses.fr/2004LEHA0003.
Der volle Inhalt der QuelleThis PhD. Thesis is the result of a research work aiming at looking further into the study of the dynamic behavior of a two-driving-wheel mobile robot whose mechanical characteristics are similar to those of a small car. The model that we propose rests on the application of the fundamental principle of dynamics and takes into account the majority of the mechanical characteristics of the mobile robot. Being closer to reality, this model advantageously replaces the kinematic model usually used in mobile robotics. In addition, its final formulation remains relatively simple which allows its use in real time applications. This model was then used for two different applications : the stabilization of fixed configurations and vision-based control. Concerning the stabilization of fixed configurations, the original solution developed consists in applying to the mobile robot three positioning reference values written in its own reference and calculated from the optimal control "bang-off-bang". Furthermore, the trajectory followed by the mobile robot were smoothed by replacing the arcs of circle by portions of clothoids. The second application rests on the use of the stereoscopic vision system embarked on the mobile robot which provides informations on the distance and the direction of the observed object compared to the mobile robot. The state feedback control law that we designed aims at maintaining the mobile robot in front of the observed object with an imposed distance
Bouchez, Guillaume. „High-frequency nonlinear dynamics and optical chaos in a laser diode with phase-conjugated optical feedback“. Electronic Thesis or Diss., CentraleSupélec, 2022. http://www.theses.fr/2022CSUP0002.
Der volle Inhalt der QuelleThis thesis studied the dynamics of a laser diode subjected to a phase conjugate feedback (PCF). I analyzed both numerically and experimentally the evolution of the laser power, with speeds of the order of a few tens of GHz. First, I studied the chaotic signal generated by such a system, both by simulations and by experiment. Three indicators were considered: the chaos bandwidth, i.e. the range of frequencies over which the energy of the signal is distributed, the spectral flatness, which verifies that the energy is not concentrated on a single frequency, and the permutation entropy, which studies whether patterns are repeated in the signal. I observed that the chaos generated by such a system was both broadband (bandwidth of about 30 GHz) and complex (permutation entropy up to 0.994). Such chaos was observed over a wide range of experimental parameters, including the feedback strength, the feedback delay, or the laser pump current. Then, I study the very fast periodic phenomena previously observed with the PCF, the external cavity modes (ECM). The ECMs are regular self-pulsations of the laser power, at a frequency equal to a multiple of the frequency associated with the feedback delay. We extend previous experimental studies by varying the feedback strength, the feedback delay and the laser pump current. In particular, we observe experimentally two results that had only been numerically predicted. First, the ECMs are bistable, i.e. under the same experimental parameters they can have different frequencies. Secondly, we show that the frequency of the ECMs does not change significantly if we change the delay without varying the other parameters of the experiment. Finally, we study numerically the generation of square waves with phase conjugate feedback. We observe that the resulting dynamics are similar to those obtained with non-phase conjugate optical feedback
Barbieri, Lemp Sebastián Andrés. „Shift spaces on groups : computability and dynamics“. Thesis, Lyon, 2017. http://www.theses.fr/2017LYSEN021/document.
Der volle Inhalt der QuelleShift spaces are sets of colorings of a group which avoid a set of forbidden patterns and are endowed with a shift action. These spaces appear naturally as discrete versions of dynamical systems: they are obtained by partitioning the phase space and mapping each element into the sequence of partitions visited by its orbit.Severa! breakthroughs in this domain have pointed out the intricate relationship between dynamics of shift spaces and their computability properties. One remarkable example is the classification of the entropies of multidimensional subshifts of finite type as the set of right recursively enumerable numbers. This work explores shift spaces with a dual approach: on the one hand we are interested in their dynamical properties and on the ether hand we studythese abjects as computational models.Four salient results have been obtained as a result of this approach: (1) a combinatorial condition ensuring non-emptiness of subshifts on arbitrary countable groups; (2) a simulation theorem which realizes effective actions of finitely generated groups as factors of a subaction of a subshift of finite type; (3) a characterization of effectiveness with oracles using generalized Turing machines and (4) the undecidability of the torsion problem for two group invariants of shift spaces.As byproducts of these results we obtain a simple proof of the existence of strongly aperiodic subshifts in countable groups. Furthermore, we realize them as subshifts of finite type in the case of a semidirect product of a d-dimensional integer lattice with a finitely generated group with decida ble word problem whenever d> 1
Wolf, Adrian. „Light-triggered self-assemblies of triarylamine-based conjugates“. Thesis, Strasbourg, 2014. http://www.theses.fr/2014STRAF003.
Der volle Inhalt der QuelleThe aim of this thesis was to self-assemble electron-donating triarylamine units, capable of aggregation into conducting fibers triggered by light, with electron-accepting entities to obtain supramolecular heterojunctions. These objectives were attained, that is in static versions (with constant distances between electron-donating and -accepting channels) and in a dynamicversion wherein the distance between the electroactive units changes owing to the controlled action of an integrated molecular muscle. These functional self-assembled systems showed very important changes in their optoelectronic properties in response to orthogonal stimuli such as light and pH
Courbois, Adrien. „Étude expérimentale du comportement dynamique d'une éolienne offshore flottante soumise à l'action conjuguée de la houle et du vent“. Phd thesis, Ecole centrale de nantes - ECN, 2013. http://tel.archives-ouvertes.fr/tel-00840511.
Der volle Inhalt der QuelleCourbois, Adrien. „Etude expérimentale du comportement dynamique d'une éolienne offshore flottante soumise à l'action conjuguée de la houle et du vent“. Ecole centrale de Nantes, 2013. https://tel.archives-ouvertes.fr/tel-00840511.
Der volle Inhalt der QuelleKarsaklian, dal Bosco Andreas. „Chaos and high-frequency self-pulsations in a laser diode with phase-conjugate feedback“. Phd thesis, Supélec, 2013. http://tel.archives-ouvertes.fr/tel-00963630.
Der volle Inhalt der QuelleLopes, Selvati Ana Carolina. „Confinement d’oligomères π-conjugués dans des nanotubes de carbone mono-feuillets : intéractions, dynamique et structure“. Thesis, Montpellier, 2016. http://www.theses.fr/2016MONTT262.
Der volle Inhalt der QuelleThis work is dedicated to the study of the encapsulation of photoactive molecules within single wall carbon nanotubes. The confinement effect on vibrational, structural and interactions between host and guest is studied as a function of nanotube size. The first part of the manuscript is dedicated to the confinement of dimethyl quaterthiophene within carbon nanotubes. Vibrational dynamics for the encapsulated molecules is studied coupling neutron scattering and DFT simulations. Interactions molecule/nanotube, in terms of energy transfer and charge transfer are studied combining photoluminescence and Raman spectroscopies. The nature of charge transfers depends on the size of the nanotube. For small diameters (>1,1nm) a photoinduced charge transfer is obtained when the excitation wavelength matches the absorption of the molecule. The second part of the manuscript focuses on the structural organization of encapsulated phthalocyanine molecules. This work combines neutron diffraction and Raman spectroscopy experimental studies at room and high pressures. Structural studies are discussed together with molecular dynamics simulations
Aviat, Félix. „Development of High Performance Molecular Dynamics : Fast Evaluation of Polarization Forces The truncated conjugate gradient (TCG), a non-iterative/fixed-cost strategy for computing polarization in molecular dynamics: Fast evaluation of analytical forces Truncated Conjugate Gradient: An Optimal Strategy for the Analytical Evaluation of the Many-Body Polarization Energy and Forces in Molecular Simulations“. Thesis, Sorbonne université, 2019. http://www.theses.fr/2019SORUS498.
Der volle Inhalt der QuelleClassical molecular dynamics is a precious tools to explore the infinitely small world, e.g. when considering biological systems (such as proteins). These simulations are based on physical models of various precision and complexity, where taking electrons into account is not easy. Polarizability allows one to take into account the mobility of the electronic density, while keeping the classical description framework. It can be described using induced dipoles, whose computation is done through a Self-Consistent procedure, which is costly in terms of computational time and can also cause instability. In this thesis, we introduce a new algorithm allowing a faster and more stable treatment of the induced dipoles, based on the truncation of the Conjugate Gradient. Accuracy, versatility, efficiency of the so-called Truncated Conjugate Gradient (TCG) are evaluated on various systems. Its applicability to free energy calculations is also tested. TCG is finally used in order to derive new molecular dynamics integrators allowing for considerable accelerations. To sum this up, TCG proves to be a polyvalent, adaptable, efficient tool, which allows for substantial acceleration of long polarizable dynamics
Bizzari, Romain. „Modélisation aérodynamique et thermique des plaques multiperforées en LES“. Thesis, Toulouse, INPT, 2018. http://www.theses.fr/2018INPT0101/document.
Der volle Inhalt der QuelleNumerical simulation is progressively taking importance in the design of an aero- nautical engine. However, concerning the particular case of cooling devices, the high number of sub-millimetric cooling holes is an obstacle for computational sim- ulations. A classical approach goes through the modelling of the effusion cooling by homogenisation. It allows to simulate a full combustor but failsin representing the jet penetration and mixing. A new approach named thickened-hole model was developed during this thesis to overcome this issue. A work on improving the mesh resolution onkey areas thanks to an automatic adaptive method is also presented, leading to a clear breakthrough. In parallel, as the flame tube temperature is a cornerstone for the combustor durability,a low-cost approach is proposed to predict it. To meet the time-constraints of design, it is based on thermal modelling instead of a direct thermal resolution
Alari, Anna. „Variations temporelles et géographiques des méningites à pneumocoque et effet du vaccin conjugué en France“. Thesis, Université Paris-Saclay (ComUE), 2018. http://www.theses.fr/2018SACLV070/document.
Der volle Inhalt der QuelleStreptococcus pneumoniae is a Gram-positive commensal bacterium of the oropharyngeal flora usually colonizing human’s rhino pharynx, of which almost 100 serotypes are known. Infants and young children constitute its main reservoir. Pneumococcus may cause serious infections, such as meningitis, bacteremia and pneumonia, or less serious but more common such as sinusitis and acute otitis media (AOM). Two conjugate pneumococcal vaccines have been introduced in France: PCV7 (covering 7 serotypes) in 2003 and PCV13 (covering 6 additional serotypes) in 2010. The overall objective of this thesis is to assess the impact of vaccination policy on invasive pneumococcal diseases in France, by focusing on temporal and geographical trends of the most serious of them: pneumococcal meningitis (PM). An initial study of PMs temporal dynamics over the 2011-2014 period assessed the impact of conjugate vaccines’ introduction. Statistical modeling techniques were used for time series analysis. The results confirm the effects found in literature: a reduction of vaccine serotypes PMs but at the same time an increase of PMs, due to non-vaccine serotypes (effect of “serotype replacement”). Therefore, the first benefit of vaccine introduction at population scale has been observed no less than 11 years after PCV7 introduction, and then principally after PCV13 was introduced in 2010, with a 25% decrease in PMs in 2014. The geographic component was then implemented to analyze the role of vaccine coverage in annual PM variability between geographic units over the 2001-2016 period. Results confirm the effectiveness of both vaccine compositions on vaccine serotypes PMs and suggest homogeneity of this effect among geographic units. Conversely the serotype replacement has been confirmed only after the first vaccine composition was introduced and presents a variable and heterogeneous geographical repartition. Variability in vaccine coverage among geographic units doesn’t explain the differences in PMs, which could suggest the role of others factors such as demographic density. Finally, a dynamic modeling capable of taking into consideration fundamental aspects of pneumococcus transmission and infection mechanisms not integrated in static modeling has been proposed in order to predict the impacts of different vaccination strategies for 65+ adults and therefore assess their cost-utility ratios
Wuilbaut, Thomas A. I. J. „Algorithmic developments for a multiphysics framework“. Doctoral thesis, Universite Libre de Bruxelles, 2008. http://hdl.handle.net/2013/ULB-DIPOT:oai:dipot.ulb.ac.be:2013/210407.
Der volle Inhalt der Quelleflutter for linear elastic structures in compressible fl
ows, conjugate heat transfer for re-entry vehicles including thermo-chemical reactions and finally, industrial electro-chemical plating processes which often include
stiff source terms. These problems are often solved using specifically developed
solvers, but these cannot easily be reused for different purposes. We have therefore considered the development of a
flexible and reusable software platform for the simulation of multi-physics problems. We have based this
development on the COOLFluiD framework developed at the von Karman Institute in collaboration with a group of partner institutions.
For the solution of fl
uid fl
ow problems involving compressible
flows, we have used the Finite Volume method and we have focused on the application of the method to moving and deforming computational domains using the Arbitrary Lagrangian Eulerian formulation. Validation on a series of testcases (including turbulent flows) is shown. In parallel, novel time integration
methods have been derived from two popular time discretization methods.
They allow to reduce the computational effort needed for unsteady fl
ow computations.
Good numerical properties have been obtained for both methods.
For the computations on deforming domains, a series of mesh deformation techniques are described and compared. In particular, the effect of the stiffness definition is analyzed for the Solid material analogy technique. Using
the techniques developed, large movements can be obtained while preserving a good mesh quality. In order to account for very large movements for which mesh deformation techniques lead to badly behaved meshes, remeshing is also considered.
We also focus on the numerical discretization of a class of physical models that are often associated with
fluid fl
ows in coupled problems. For the elliptic problems considered here (elasticity, heat conduction and electrochemical
potential problems), the implementation of a Finite Element solver is presented. Standard techniques are described and applied for a variety of problems, both steady and unsteady.
Finally, we discuss the coupling of the
fluid flow solver with the finite element solver for a series of applications. We concentrate only on loosely and strongly coupled algorithms and the issues associated with their use and implementation. The treatment of non-conformal meshes at the interface between two coupled computational domains is discussed and the problem
of the conservation of global quantities is analyzed. The software development of a
flexible multi-physics framework is also detailed. Then, several coupling algorithms are described and assessed for testcases in aeroelasticity and conjugate heat transfer showing the integration of the
fluid and solid solvers within a multi-physics framework. A novel strongly coupled algorithm, based on a Jacobian-Free Newton-Krylov method is also presented and applied to stiff coupled electrochemical potential problems.
Doctorat en Sciences de l'ingénieur
info:eu-repo/semantics/nonPublished
Hadad, Waseem Al. „Thermique des mini-canaux : comportement instationnaire et approche convolutive“. Thesis, Université de Lorraine, 2016. http://www.theses.fr/2016LORR0121/document.
Der volle Inhalt der QuelleA semi-analytical model allowing to simulate the transient conjugate heat transfer in mini/macro plane channel subject to a heat source(s) localized on the external face(s), was presented and verified. The developed model takes into account advection-diffusion in the fluid and conduction in the solid. As the hydraulic diameter of the channel becomes small, the internal experimental characterization (measurement of temperature and heat flux) using internal sensors become tricky because internal sensors located may compromise the structural integrity of the whole system. A non-intrusive method for estimating the internal conditions from infrared temperature measurements on the external faces using the semi-analytical model was performed. Since the classic convective heat transfer coefficient loses its meaning in transient state, an alternative approach based on a transfer function, valid for Linear Time-Invariant (LTI) systems, was highlighted. This function can be calculated analytically only for a simple geometry. For complex geometries it can be estimated experimentally. Thanks to intrinsic character of this function, two characterization methods were designed. The first to estimate the temperature at a point from a measurement at another point in the system (virtual temperature sensor). The second method concerns the detection of fouling layers that may appear in the heat exchanger from temperature measurements on the external faces
Costini, Pierre. „Applicabilité de la réduction de modèles à la conception aérothermique collaborative des systèmes d'air secondaire des turbomachines“. Thesis, Aix-Marseille, 2017. http://www.theses.fr/2017AIXM0109.
Der volle Inhalt der QuelleA non intrusive method to create surrogate models describing the flow in jet engines’ secondary air system is desired. The resulting model must be integrated in a thermal model describing the whole engine during a complete mission under the wing. This requires the model to use a high number of input and output parameters and to be valid on a broad domain of variation of its parameters. Several approches are explored in this thesis and applied to a simplified turbine cavity :— Surrogate modeling of terms of the ANOVA decomposition of wall fluxes.— Surrogate modeling of wall fluxes combined with an adaptive refinement method exploiting the trajectory followed by the input parameters during the coupling between the metamodel and the structural model.— Dimensionality reduction of the interface data exchanged during the coupling between flow and structure thermal model and surrogate modeling of the resulting reduced coordinate.This last approach leads to good results on the test case considered in this thesis with fixed inlet boundary conditions and then with variations of some of the inlet parameters
Felouat, Abdellah. „Synthèse et études photophysiques de matériaux PI-conjugés - Complexes de difluorure de Bore des ligands Beta-dicétone à conjugaison PI-étendue“. Thesis, Aix-Marseille, 2014. http://www.theses.fr/2014AIXM4036.
Der volle Inhalt der QuelleA new photosensitive family of boron difluoride complex is developed. It is based on π-conjugated molecular structures containing β-diketonates unit.The wide variety of aromatic groups and the nature of donor or electron acceptor of the different substituents allow the development of electron donor-acceptor-donor (DAD) and donor-acceptor (DA) electronic systems.The electronic absorption of this family of molecules is in the visible part of the electromagnetic spectrum and a portion of the ultraviolet spectrum, and is characterized by an intense π-π* absorption band with molar absorption coefficient greater than 50 000 M-1.cm-1.The fluorescence emission covers a spectral range going from visible to near infrared, with relatively high fluorescence quantum yields of up to 62 % in solution.This new material family is photochemically stable and, unlike some other families of boron difluoride complexes, chemically very stable in solution
Blondin, Odrée. „Les trajectoires de femmes victimes de violence conjugale : les facteurs qui expliquent la dynamique de la violence physique à travers le temps“. Thèse, 2015. http://hdl.handle.net/1866/13653.
Der volle Inhalt der QuelleAlary, Brigitte. „Profils individuels et dynamiques interactionnelles des parents et des enfants à risque d’aliénation parentale dans un contexte d’une rupture conjugale litigieuse“. Thèse, 2015. http://hdl.handle.net/1866/13733.
Der volle Inhalt der QuelleParental Alienation (PA) is a widespread phenomenon among socio-legal professionals working with conflictual separated families. This phenomenon is rarely studied empirically and its definition and markers remain poorly circumscribed and arouse confusion and controversy. We will attempt to stay away from this controversy by focusing on the phenomenon of Deterioration of the Parent-Child Relationship (DPCR), including PA. This thesis main objective is to expand our understanding of the various factors that interact and set in place a family situation of a DPCR. This work consists of four articles, three of which are empirical. The first article is a critical review of the literature that identifies various factors, conduct or individual and relational context associated with DPCR. It appears that very few papers have address this phenomenon in a systemic perspective who could bring an in-depth and comprehensive understanding of this multifactorial phenomenon. Several aspects need to be further investigated: individual characteristics, inappropriate behaviors and family dynamics. Finally, resilience factors need to be addressed. Articles 2, 3 and 4 present the results of a qualitative analysis of 17 psychosocial expertise performed on separated families in litigation around the custody and access to children. The second article intends to provide a refined psychoanalytic insight on the personality profiles of the parents and how it contributes distinctively to the family dynamics. Four parental profiles emerged and helped differentiate parents with alienating behaviors from denigrated ones and, those who maintained a relationship with their child or those who did not. Risk and protective factors associated with the personality profile are formulated. The third paper intends to analyse through a psychodynamic lens, the individual characteristics of children with the aim to understand why a child is resistant to a DPCR or is not. Various risk and protective factors of a DPCR associated with the characteristics of the children are provided. The fourth article seeks to model the different contributing or mitigating variables to a DPCR. Three trajectories denoting a DPCR emerged. A systemic model is proposed and incorporates different factors (personal and relational dynamics, family background, socio-legal system, third parties and time) and their specific deployment to each trajectory.