Teses / dissertações sobre o tema "Surveillance de l'état de santé"
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Makdessi, Maawad. "Modélisation, vieillissement et surveillance de l'état de santé des condensateurs films utilisés dans des applications avioniques". Phd thesis, Université Claude Bernard - Lyon I, 2014. http://tel.archives-ouvertes.fr/tel-01058227.
Texto completo da fonteGaffard, Agathe. "(Sur) Vivre en milieu agricole : approche systémique des effets sublétaux des pesticides sur l'état de santé de la perdrix grise (Perdix Perdix)". Electronic Thesis or Diss., La Rochelle, 2023. http://www.theses.fr/2023LAROS001.
Texto completo da fonteFor several decades, the farmland bird decline has been the subject of much scientific attention, with a large body of literature on the causes and consequences of this phenomenon. One of the major issue is whether pesticides are responsible for this trend, as studies conducted so far indicate cause and effect relationships without clearly identifying the underlying mechanisms. A major challenge is thus to provide biologically relevant evidences for a better assessment of pesticide-related risks to farmland birds. The aim of this thesis was to study the sublethal effects of pesticides on the life history traits of the grey partridge (Perdix perdix) using both experiments under controlled conditions and monitoring of free-living birds. In combination with survival and reproduction, the multi-trait approach carried out here allowed us to understand (1) the deleterious effects of pesticides on several life history traits of partridges, both in captivity and in natura, (2) the ubiquity of pesticide cocktails in the blood of birds and their links with sublethal effects, (3) the importance of considering evolutionary processes in the long-term effects of pesticides by considering parental effects and phenotypic plasticity of individuals and finally (4) the need to use biomonitoring of sentinel species for a better monitoring of the contamination of agroecosystems at the local scale but also as a tool for the development and implementation of refuge areas to pesticide exposure
Clement, Pierre. "Solutions aux limites des interrogateurs B-OTDR pour la surveillance d'infrastructures : augmentation de la portée de mesure et décorrélation des paramètres de température et de déformation". Electronic Thesis or Diss., Institut polytechnique de Paris, 2020. http://www.theses.fr/2020IPPAT042.
Texto completo da fonteThis thesis deals with distributed optical fiber sensors, especially Brillouin sensors called B-OTDR that are sensitive both to temperature and strain. Some actual limitations due to the scattering phenomenon avoid deployment of this technology for some specific applications. These limitations are about the maximum length measured by the sensor but also the double sensitivity to strain and temperature. From our current B-OTDR sensor, we propose solutions to address these issues.A new re-amplification module using EDFA has been developed and characterized associated to a B-OTDR system. A 150 km distributed temperature measurement with 1,5 °C repeatability has been reached. This record performance let us consider a deployment for very long infrastructure monitoring for the energy transport. In another hand, we developed a new sensing device using Brillouin scattering and able to separate temperature and strain. This patented device has been characterized and used on a specific cable inserted in a well drilling. Results have shown a combination of strain and temperature variations on the cable that give very useful information to the well operator. We have reached a temperature repeatability of 1 °C and a strain repeatability of 20 μm/m for 1 km fiber. At 10 km, temperature repeatability has been evaluated to be 3 °C and strain to 75 μm/m. These results are to the state of art for temperature/strain separation using B-OTDR.These works have led to a new distributed measurement prototype that could address simultaneously temperature, strain, acoustic vibrations, and pressure sensing. Some interesting perspectives could result from these works to address a complete infrastructure monitoring using fiber optic sensing
Zhu, 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
Habib, Carol. "Energy-efficient data collection and fusion in wireless body sensor networks for continuous health monitoring". Thesis, Bourgogne Franche-Comté, 2018. http://www.theses.fr/2018UBFCD046.
Texto completo da fonteSeveral challenges exist in Wireless Body Sensor Networks such as the data collection and fusion especially that (1) wireless sensor nodes have limited energy, processing and memory resources, (2) the amount of periodically gathered data is huge, (3) the gathered data are characterized by a heterogeneous nature and (4) the data interpretation to ensure decision-support is influenced byseveral external factors such as the provided context information of the monitored person.In this thesis, the aforementioned challenges were tackled by proposing scientific aproaches. Firstly, an energy-efficient data collection technique is proposed. This technique targets the energy consumed by biosensor nodes for sensing and transmitting vital signs. It consists of a real-timesampling rate adaptation mechanism and a local detection system which are provided at the level of the nodes. Second, in order to perform a health assessment based on the collected data, a multisensor data fusion model is proposed. In this approach, the coordinator of the network performs anassessment of the patient's health condition based on the collected measurements of his/her vital signs. Such data is interpreted in a human-reasoning way and are characterized by ambiguity and imprecision. Thus, we propose to use a Fuzzy Inference System. Then, given that vital signs are highly correlated to the context of the monitored person, a context-aware multi-sensor data fusionmodel for health assessment is proposed. The person's context include his/her physical activity status, medical record and personal information. This information highly influences the interpretation of vital signs. Hesitant fuzzy sets are used to subjectively evaluate the intensity of the person's physical activities based on his/her personal information and the activity's characteristics. Finally, a specific healthcare monitoring application is targeted. A real-time stress detection and evaluation framework is proposed while taking into consideration the energy consumption constraint. Shimmer 3 GSR+ is used as a wireless sensor node to sense the Photoplethysmogram (PPG) signal and the skin conductance. An android mobile application is developed to extract from the PPG signal stress correlated vital signs such as the heart rate, the respiration rate and the blood pressure
Cusson, Valérie. "Évaluation du lien entre l'état de santé dentaire et l'état nutritionnel chez les personnes âgées". Mémoire, Université de Sherbrooke, 2014. http://hdl.handle.net/11143/5993.
Texto completo da fonteMachikou, Ngameni Nadine. "Les chemins de l'état observateur : contribution des observatoires régionaux de santé". Amiens, 2010. http://www.theses.fr/2010AMIE0050.
Texto completo da fonteJorquera, A. Paola. "L'influence du régime public d'assurance santé sur l'état de santé périnatale et infantile au Chili". Thesis, National Library of Canada = Bibliothèque nationale du Canada, 1999. http://www.collectionscanada.ca/obj/s4/f2/dsk1/tape9/PQDD_0002/MQ44698.pdf.
Texto completo da fonteMokrani, Sabrina. "L'évolution du contrôle de l'état sur les établissements de santé". Thesis, Aix-Marseille, 2017. http://www.theses.fr/2017AIXM0302/document.
Texto completo da fonteA study about the regulation of the health facilities is essential regarding the many evolutions in the matter. This activity’s oddity allowed to introduce legal processes disturbing the application of public law. The necessity to maintain a right of inspection on every health’s facility has favored the overtake of a regulation based on the organic standard to introduce a new way of control based on a primarily functional approach of the health system. The care offer’s perception allows, on the one hand, to harmonize the rules applicable to the entirety of health’s facilities, on the other hand, to exceed the divide between public and private law. Besides, the study broached as part of this work allows to reveal that the traditional conceptions of regulation are progressing. Consequently, the latter seems to extend in the way to slip inside a new kind of regulation inspired by Anglo-Saxon’s model based on guidance. This new approach is not without consequences, because it gradually brings about a reassessment of autonomy and freedoms known to privates and publics health’s facilities
Cury, Alexandre. "Techniques d'anormalité appliquées à la surveillance de santé structurale". Phd thesis, Université Paris-Est, 2010. http://tel.archives-ouvertes.fr/tel-00581772.
Texto completo da fonteHerida, Madjid. "Méthodes d’évaluation des systèmes de surveillance en santé publique". Thesis, Université Paris-Saclay (ComUE), 2016. http://www.theses.fr/2016SACLS279/document.
Texto completo da fonteEconomic evaluations approach in the public health surveillance systems evaluationsKey word: public health surveillance system evaluation, economic evaluation, discrete choice experimentsPublic health surveillance is closely linked to action as it provides accurate and validated information to health authorities in order that these same authorities can implement appropriate prevention measures and control strategies. In a context of emerging infectious diseases and of new health threats occurring, priorities for public health surveillance need to be reviewed and adapted regularly. This need of constant adaptation is facing limited resources and an increasing social demand of health security and protection against all health risks. Assessing the usefulness and the technical performance of surveillance systems are the main objectives of public health surveillance system evaluations and this has been recognized for many years through international guidelines. The efficiency of a surveillance system is a more recent question and takes a particular dimension in the context of budgetary constraints that all national agencies are facing.This work aimed to underline the interest and the added value of an external and formal evaluation process of surveillance systems in a national public health agency. Based on a generic evaluation protocol drawn up in accordance with international recommendations, this evaluation process has improved the surveillance strategy of the institution and has brought new questions up about the estimations of benefits of surveillance systems and their impact in the surveillances prioritizing process. A systematic literature review has drawn a clear picture of the state of the art and the knowledges in the field of public health surveillance system benefits estimation and evaluation this systematic review indicates that, to date, very few economic evaluations of public health surveillance systems have been performed worldwide. It also shows that the benefits of surveillance are mainly assessed by the costs of the number of cases or deaths prevented by the response and control measures. This approach has certain limits. It cannot be applied when the primary objective of the surveillance activities is not linked to immediate response. It does not take into account the existence value of a Public health surveillance system. In order to take the dimensions of a public health surveillance system, we have conducted a pilot study using discrete choice experiments applied to different emerging infectious diseases surveillance systems. This study, novel in the field of public health surveillance, was performed among a convenient sample and shows the importance of certain criteria such as the prevalence and the case fatality ratio. For the first time, marginal willingness to pay for these criteria have been estimated and these results give some insights into the question of the benefits, a public health surveillance system can bring.Economic evaluations of public health surveillance system remain an area where little has been carried out to date. Updating international recommendations for public health surveillance systems would be useful and should include an economic approach. The potential interest of the discrete choice experiments for valuing benefits of a public health system used in this pilot study need to be confirmed in a larger scale
Roux, Julien. "Conception d'un capteur distribué pour la surveillance de l'état hydrique des sols". Thesis, Toulouse, INSA, 2017. http://www.theses.fr/2017ISAT0031/document.
Texto completo da fonteOwing to the development of the smart farming, some new studies need to be lead on a distributed instrumentation to measure soil moisture to control the irrigation.In the project IRRIS context, we realize a smart soil moisture sensor. First, we have to realize the sensing element of this sensor. We choose a capacitive detection to get a reactive sensor despite low cost. The body is a cylinder to be easily buried in the soil. The electrodes are made by electrochemical deposition on the plastic tube. Then, we design the measurement electronic. We compare two solutions, one with discrete components and the other software on embedded microcontroller. We submit those electronics at thermic variations to observe their comportment to create the law of compensation. Next we assemble the sensor according to two ways. The first, the multi sensor, forces the depths of sensing but reduces the costs by pooling the measurement electronic. The second, the mono sensor, frees the choice of depth but multiplies the number of sensors. We create at this step the sensor network thanks a wireless communication placed on 868MHz, an ISM band that we characterize in terms of range depending on the flow rate to optimize this communication. Finally, we observe the results of three measurement campaigns to validate the operating for different soil and cultures.This study ends in the realization of a sensor to measure soil moisture with a reduced cost relative to the industrial sensor on the market. Experiments prove its ease of use as well as its proper functioning
Cinquin, Marie. "Suivi par ondes guidées de l'état de santé de réservoirs composites". Bordeaux 1, 2004. http://www.theses.fr/2004BOR12934.
Texto completo da fonteDevreux, Lise. "Outils d'évaluation de l'état de santé des hydrosystèmes en tresses restaurés". Electronic Thesis or Diss., Université Côte d'Azur, 2023. http://www.theses.fr/2023COAZ2015.
Texto completo da fonteBraided rivers have been harnessed for their natural resources and modified profoundly through decades of human activity, sometimes to the point where major ongoing management issues and risks to society have arisen. Restoration is then a process that aims to return functionality to these hydrosystems, especially in order to reach good ecological status according to the Water Framework Directive. This thesis, based on four hydromorphological restoration operations on Alpine braided rivers, aims to adapt and develop analysis tools to evaluate and quantify the success of restoration operations in order to produce restoration feedback. Key considerations for the effective management and understanding of these hydrosystems are also presented and discussed within the evolutive trajectories of the studied sites along with a systemic and transdiciplinary perspective
Gimbert, Virginie. "L'état sanitaire en question : les administrations à l'épreuve des risques". Cachan, Ecole normale supérieure, 2006. http://www.theses.fr/2006DENSA004.
Texto completo da fonteDavid, Pierre. "Surveillance des tuberculoses bactériologiquement documentées : évaluation d'un logiciel". Bordeaux 2, 1995. http://www.theses.fr/1995BOR23003.
Texto completo da fonteMarchildon, Jacques. "Détermination de l'état de charge et l'état de santé d'une batterie plomb acide par la méthode de deux impulsions". Thèse, Université du Québec à Trois-Rivières, 2014. http://depot-e.uqtr.ca/7367/1/030673974.pdf.
Texto completo da fonteMoren, Alain. "Evaluation de l'état de santé des populations déplacées et refugiées : méthodes épidémiologiques". Bordeaux 2, 1995. http://www.theses.fr/1995BOR28327.
Texto completo da fonteDelaille, Arnaud. "Développement de méthodes d'évaluation de l'état de charge et de l'état de santé des batteries utilisées dans les systèmes photovoltaïques". Paris 6, 2006. http://www.theses.fr/2006PA066251.
Texto completo da fonteThe energy-storage is of major importance in stand alone photovoltaic (PV) systems, to adapt the energy need to its furniture. For that, the lead-acid battery (LAB) is the most often used technology because of its low investment cost, robustness, and maturity. However, its low service life compared with that of the other components of PV systems, and consequently its high life-cycle cost, makes the LAB a critical point of these systems. The evaluation of the state-of-charge (SOC) and state-of-health (SOH) of LABs appears then as a necessary step to increase their lifespan with an improved management, and finally to reduce the energy-storage cost. Unfortunately, this evaluation is an ambitious task with regard to the complexity of LABs. Three approaches are presented and discussed in this manuscript. The first one is based on the development of a novel ampere-hour algorithm. The second one consists in the measurement of impedance parameters, especially at high frequencies. Finally, the third one consists in the study of a phenomenon proper to LABs and known in the literature as the “coup de fouet”
Belazi, Nader. "Estimation de l'état de charge (SOC) et de l'état de santé (SOH) d'une batterie Lithium-Ion utilisée pour les voitures électriques". Mémoire, École de technologie supérieure, 2012. http://espace.etsmtl.ca/967/1/BELAZI_Nader.pdf.
Texto completo da fonteBreuneval, Romain. "Surveillance de l’état de santé des actionneurs électromécaniques : application à l'aéronautique". Thesis, Lyon, 2017. http://www.theses.fr/2017LYSE1313.
Texto completo da fonteThe aeronautics industry is facing three major challenges: the reduction of its environmental impact, the absorption to the air traffic increase and a high level of safety for increasing complex systems, for equivalent costs. Predictive maintenance allows answering to these issues. Systems, for which the life can be predicted, can be used for a longer time. This reduces the number of components used in the lifetime of an aircraft. To predict failures also allow increasing the availability of aircrafts by avoiding unplanned downtime. Finally, monitoring the ageing of the aircraft allows to optimize maintenance and so to reduce costs. In the 2000s, these methodologies were applied to turbojets. It starts, now, to be generalized to others avionics systems. Therefore, this work deal with predictive maintenance methodologies for electromechanical actuator (EMA) for flight controls systems. Problems and constraints (computation time, memory quantities…) related to this subject are detailed. In a first part, fault feature computation methodologies are investigated. A first method is proposed for screw/nut systems. This method is based on the identification of a friction model. A second method, based on current analysis, is presented. This method uses a combination of empirical mode decomposition and independent component analysis. The two methods are tested on data from a non-operational profile. This data are from a simulation model which represents the EMA in the aircraft environment. The simulations performed represent virtual trials on a population of EMA. From these simulations, fault features are computed. Then, performances metrics are evaluated. Diagnosis by pattern recognition is then studied. An algorithm based on support vector machine and fuzzy membership functions is proposed. This algorithm can estimate the severity of a fault. It can also detect unknown observations, which can represent unknown faults or combined faults. The architecture of a global diagnosis system, based on the proposed algorithm, is detailed. Experimental validation of fault features computation and diagnosis algorithm is performed. These validations are based on three data bases. The first one is based on trials performed on a healthy EMA on a representative bench. The second consists in an induction motor at constant speed for different types of faults. The last one is from trials on a permanent magnet synchronous machine, of aeronautics type, for different kinds of short – circuit fault severities. The respect of the aeronautics constraints is verified. At last, elements for prognosis process are given. This process is detailed. Only a part of this process is treated, on a roller bearings benchmark database. First, the clustering for prognosis is studied. A metric, which allows verifying that the obtained clusters are coherent regarding time, and thus, checks the constraints for prognosis, is given. Then the proposed diagnosis algorithm is validated on the clustered data. This brought to perform two kinds of validation, a diagnosis oriented one and a prognosis oriented one. A method to normalize data for the prognosis oriented validation, based on sigmoid function, is given. The prediction of the features in the future is studied. A regression algorithm based on support vector regression is used. Finally, the diagnosis algorithm is applied to the predicted data. This allows to estimate the end of life, and so the remaining useful life for a given time. These estimations are evaluated regarding different kinds of performance metrics and regarding the constraints of the aeronautics applicative field
Or, Zeynep. "Les déterminants de l'état de santé dans les pays industrialisés : une analyse économétrique". Paris 1, 1997. http://www.theses.fr/1997PA010020.
Texto completo da fonteThe main objective of this study is to provide some new insights into the determinants of health outcomes in industrialised countries. We examine the relative impact of the medical system (organisation of health services, differences in medical practices, social security coverage) and environmental factors (life style, physical and socio-economic environment) on health outcomes based on annual, national data for 21 countries over the period 1970 to 1992. Potential life years lost are used as a synthetic measure of the health status of each country's population. A considerable effort has been undertaken to develop long data series that are comparable across countries. The large number of countries included in this study and the long period covered by the data result in a large number of observations compared with previous international studies. A number of indicators have been specially constructed and some original variables, such as for social status and air pollution, are introduced in the health equations for the first time. In the estimations, a large number of explanatory variables (9 to 13) are jointly controlled for which improves the precision of the results. Finally the estimation methods used in the regression analysis allow for the impact of country specific factors and omitted variables, which reduces the potential biases in most cross-country or time-series analyses. Based on a relatively rich array of specifications, the results of this study strongly confirm the role of environmental factors in explaining differences in premature mortality across industrialised countries. At the same time, the importance of medical factors is established. Contrary to most other macro-economic studies, total health expenditure seems to have a significant impact on reducing premature female mortality although this relation is less significant for males. Moreover, the way health expenditures are financed is also shown to be important in reducing premature deaths
Fendzi, Claude. "Contrôle Santé des Structures Composites : application à la Surveillance des Nacelles Aéronautiques". Thesis, Paris, ENSAM, 2015. http://www.theses.fr/2015ENAM0048/document.
Texto completo da fonteThis work aims at designing a Structural Health Monitoring (SHM) system for complex composite structures, with an application to elements of aeronautical nacelles. This work is original and is in the framework of a project, coordinated by AIRBUS Operations SAS and headed by AIRCELLE (SAFRAN Group). The main parts of the nacelle concerned with our approach are the fan cowl (composite monolithic) and the inner fixed structure (IFS, sandwich structure with honeycomb core) of the thrust reverser. These structures made from composite materials are subjected to many damages types which can affect nacelle’s useful life (fiber breaking, delamination, crack, etc…). Furthermore these structures are exposed to many environmental constraints which are for instance important thermal variations (from -55°C to +120°C). The objective of this work is to develop a SHM system aimed at detecting and localizing these damages, before the degradation of the whole structureoccurs. Piezoelectric (PZT) actuators and sensors are bonded on the structure and they are used to generate Lamb wave signals and perform measurements. The proposed SHM approach is based on successive measurements starting from an initial state, considered as healthy and regularly conducting follow-up. The difference in signals measured between two states is analyzed in order to extract some damages-sensitivesfeatures. After validation, PZT elements were glued to the fan cowl and to the IFS as well as on representative coupons and a suitable test bench is designed in order to validate our approach. Since one has to work on difference in signals, damage detection algorithms based on statistical hypothesis testing and PrincipalComponent Analysis (PCA) have been developed and validated. This was first tested for the detection of controlled damages introduced in coupons, and thereafter on the fan cowl and IFS. Robust damage localization algorithms (including with temperature variations) based on Time-of-flight (ToF) extraction from difference in signals, were developed and validated for these structures. A Bayesian approach for uncertainties quantification in the damage localization is also developed, leading to more accuracy in the damage localization results
Najm, Désirée. "Quels capteurs de vibrations pour la surveillance de santé des structures mécaniques ?" Thesis, Paris Est, 2015. http://www.theses.fr/2015PEST1072/document.
Texto completo da fonteThe aim of the thesis is to define principles and approaches of a practical implementation of vibration sensors for dynamic monitoring of structures, specially damage detection. The general idea is to study the combinations instrumentation /detection method. Thus, a numerical sensitivity study of different damage detection and localization methods using modal parameters (mainly natural frequencies and mode shapes) was performed according to the type of sensor used, to the number of sensors, to the severity of the damage, and to dispersion of modal parameters. The case-study is conducted on an aluminium clamped-clamped beam. A panorama of the capacity of each method for dynamic assessment of structures has been presented. Overall, long base strain gauges provide better results for damage detection methods. A method developed in the Dynamic group applied to numerical and experimental data, is able to locate mass and/or flexural rigidity modifications and to quantify these perturbations
Aranzazu, Ana isabel. "Le réseau de surveillance de la grippe de l’OMS : circulation, innovation et santé publique". Thesis, Sorbonne Paris Cité, 2015. http://www.theses.fr/2015USPCD047.
Texto completo da fonteThis dissertation traces the history of the WHO global influenza surveillance network between 1947 and 1997. This international public health system is responsible for the continuous monitoring of influenza virus mutations and the transfer of strains to the pharmaceutical industry for the production of vaccines. This story explores the various strategies employed by WHO in order to ensure the constitution and the globalization of the influenza network: development, standardization and dissemination of laboratory techniques and epidemiological surveillance methods; production and free distribution of reagents; certification and dissemination of scientific and epidemiological information on influenza; development of regulatory standards concerning the circulation and sharing of strains, epidemiological information and knowledge inside and outside of the influenza surveillance network. This analysis addresses the relationship between science, economics and international politics involved in the creation and the growth of this program. Furthermore, this story examines the challenges posed by the globalization of the influenza surveillance system, including the difficulties faced by developing countries – not producing influenza vaccine – to collaborate in the influenza surveillance. The involvement of WHO into the regulation of the production and the control of influenza vaccine and the relationship established by WHO with the industries producing the vaccine is also considered in the present study
Fournier, Marie-Cecile. "Pronostic dynamique de l'évolution de l'état de santé de patients atteints d'une maladie chronique". Thesis, Nantes, 2016. http://www.theses.fr/2016NANT1004/document.
Texto completo da fonteFor many chronic diseases, the monitoring of patients can be improved by a better understanding of disease growth and the ability to predict the occurrence of major events. Health status evolution can be measured by repeated measurements of a longitudinal marker, as serumcreatinine in renal transplantation.This thesis work in epidemiology and biostatistics applied to renal transplantation focuses on jointmodels for longitudinal and time-to-event data.These models have various benefits but their use is still uncommon in practice. In a first part, we use this methodology to identify the specific role of risk factors on serum creatinine evolution and/or graftfailure risk. We give a rich epidemiological overview and highlights some features which deserve additional attention as they seemassociated with graft failure risk without previousmodification of the longitudinal marker, the serumcreatinine. In a second part, we focus on dynamic predictions, which can be estimated from a jointmodel. They are called dynamic because of an update performed at each new measurement of the longitudinal marker. The clinical usefulness of this type of predictions has to be evaluated and should be based on good accuracy in terms of discrimination and calibration. To assess the prognostic capacities, the Brier Score or the ROCcurve have already been developed. To complete them, we propose an R² type indicator in order to complement some limitations of previous tools
Clément, Andrée-Anne, e Andrée-Anne Clément. "Santé cardiométabolique chez la femme obèse : importance de l'état fonctionnel de différents dépôts adipeux". Master's thesis, Université Laval, 2019. http://hdl.handle.net/20.500.11794/37081.
Texto completo da fonteL’épidémie d’obésité est maintenant bien répandue à l’échelle mondiale. Toutefois, il existerait une relation distincte entre les différents dépôts adipeux et la santé cardiométabolique des individus. Celle-ci pourrait expliquer l’hétérogénéité observée au sein de la population avec une obésité et le fait que certains individus ne présentent pas les complications associées à l'obésité et sont qualifiés de metabolically healthy obese (MHO). Dans le cadre de ma maitrise, je me suis intéressée aux différences entre certains dépôts adipeux, mais également à la dysfonction du tissu adipeux (TA) dans sa globalité, et ce, en situation d’obésité. Dans un premier temps, nous avons étudié chez des femmes avec une obésité sévère, les différences régionales relatives à l’expression de plusieurs gènes impliqués dans certaines fonctions métaboliques et sécrétoires de trois dépôts adipeux intra-abdominaux ainsi que leurs associations respectives avec plusieurs marqueurs du profil cardiométabolique. Les trois dépôts adipeux étudiés ne présentent pas les mêmes caractéristiques fonctionnelles relativement aux différents gènes évalués. De plus, les relations entre l’expression de ces gènes et la résistance à l’insuline et certains biomarqueurs inflammatoires ne sont pas semblables dans les trois dépôts évalués. Dans un deuxième temps, nous avons vérifié si l’adiposopathie, évaluée par le rapport adiponectine/leptine (A/L) et reflétant la santé globale du TA, influence la résistance à l’insuline, chez des femmes sédentaires et avec une obésité modérée, avant et après un programme d'activité physique aérobie de 16 semaines. Nous avons observé que le rapport A/L n’est pas modifié à la suite du programme d’entrainement, bien que l’homéostasie du glucose et de l’insuline le soit avant et après notre intervention. À la lumière de nos résultats, il serait pertinent de considérer l’importance des différents dépôts adipeux et plus particulièrement la répercussion de leur état fonctionnel sur la santé cardiométabolique de femmes avec une obésité.
It is well established that obesity has reached epidemic proportions throughout the world. However, it appears that a distinctive relationship exists between each fat depot and the cardiometabolic profile of individuals with obesity. This relationship might explain the presence of different phenotypes within the obese population and the fact that some individuals do not display the cardiometabolic complications associated with this condition which corresponds to the metabolically healthy obese profile named MHO. In this context, the primary aim of this thesis was to investigate different intra-abdominal fat depots and adipose tissue (AT), in terms of their dysfunctions and their respective associations with adverse cardiometabolic complications. Firstly, we compared regional variations in gene expression involved in some AT metabolic and secretory functions and their respective associations with cardiometabolic markers, in women with severe obesity. Our results indicate that the three intra-abdominal fat depots are characterized by different functional characteristics. Moreover, relationships between AT gene expression and insulin resistance as well inflammatory biomarkers differ within each fat depot. Secondly, we investigated the relationship between adiposopathy assessed as the adiponectin/leptin (A/L) ratio and glucose-insulin homeostasis in sedentary women with moderate obesity, before and after an aerobic training program of 16 weeks. Adiposopathy was not modified by aerobic training, despite changes in glucose-insulin homeostasis. However, the A/L ratio was an independent and significant predictor of glucose-insulin homeostasis indices, at pre- and postintervention. Our results suggest that it would be relevant to examine the contribution of various fat depots and more particularly the impact of their functional status on the cardiometabolic health of women with obesity
It is well established that obesity has reached epidemic proportions throughout the world. However, it appears that a distinctive relationship exists between each fat depot and the cardiometabolic profile of individuals with obesity. This relationship might explain the presence of different phenotypes within the obese population and the fact that some individuals do not display the cardiometabolic complications associated with this condition which corresponds to the metabolically healthy obese profile named MHO. In this context, the primary aim of this thesis was to investigate different intra-abdominal fat depots and adipose tissue (AT), in terms of their dysfunctions and their respective associations with adverse cardiometabolic complications. Firstly, we compared regional variations in gene expression involved in some AT metabolic and secretory functions and their respective associations with cardiometabolic markers, in women with severe obesity. Our results indicate that the three intra-abdominal fat depots are characterized by different functional characteristics. Moreover, relationships between AT gene expression and insulin resistance as well inflammatory biomarkers differ within each fat depot. Secondly, we investigated the relationship between adiposopathy assessed as the adiponectin/leptin (A/L) ratio and glucose-insulin homeostasis in sedentary women with moderate obesity, before and after an aerobic training program of 16 weeks. Adiposopathy was not modified by aerobic training, despite changes in glucose-insulin homeostasis. However, the A/L ratio was an independent and significant predictor of glucose-insulin homeostasis indices, at pre- and postintervention. Our results suggest that it would be relevant to examine the contribution of various fat depots and more particularly the impact of their functional status on the cardiometabolic health of women with obesity
Clampitt, Megan. "Indexation de l'état de santé des coraux par une approche basée sur l'intelligence artificielle". Electronic Thesis or Diss., Université Côte d'Azur, 2023. http://www.theses.fr/2023COAZ6019.
Texto completo da fonteCoral reefs are deteriorating at a startling rate and the development of fast and efficient monitoring schemas that attempt to evaluate coral health without only focusing on the absence or presence of disease or bleaching is essential. My Ph.D. research aims to combine the fields of Coral Biology, Computer Science, and Marine Conservation with the main question of my thesis being: how can artificial intelligence tools be used to assess coral health states from colony photographs? Since the assessment of individual coral colony health state remains poorly defined, our approach is to use AI tools to assess visual cues such as physically damaging conditions (boring organisms & predation), contact with other organisms (algae, sediment), and color changes that could correlate with health states. This was achieved by utilizing photographic data from the Tara Pacific Expedition to build the first version of AI machines capable of automatically recognizing these visual cues and then applying this tool to two types of field studies i). A longitudinal study set up in Moorea, French Polynesia aimed to investigate coral health as assessed by mortality/partial mortality events. ii). A comparative study between damaged, pristine, and restoration sites in Raja Ampat, Indonesia. The objective of these studies is to extract the visual cues that distinguish healthy from unhealthy corals. Thus, I was able to create an AI Model capable of automatically annotating coral colony photographs for visual cues relevant to the current health state of the colony
Sacko, Massambou. "La surveillance prénatale dans le district de Bamako (Mali)". Paris 6, 1998. http://www.theses.fr/1998PA066726.
Texto completo da fonteRiviere, Elie. "Détermination in-situ de l'état de santé de batteries lithium-ion pour un véhicule électrique". Thesis, Université Grenoble Alpes (ComUE), 2016. http://www.theses.fr/2016GREAI048/document.
Texto completo da fonteAccurate lithium-ion battery State of Charge (SoC) and State of Health (SoH) estimations are nowadays a crucial point, especially when considering an industrial use. These estimations enable to improve robustness and reliability of hardware using such batteries. This thesis focuses on researching lithium-ion batteries state of health estimators, in particular considering Lithium Iron Phosphate (LFP) and Lithium Manganese Oxide (LMO) chemistries.Researches have been targeted towards SoH estimators straight embeddable into electric vehicles (EV) computers. Cost and reliability constraints are thus the main guideline for this work.Although existing literature offers various SoH estimators, those who are embedded or embeddable are still little studied. A complete literature review about SoH estimators, embedded or not, is therefore proposed. Lithium-ion batteries detailed operation and ageing mechanisms are also presented.The main part of this work is dedicated to Incremental Capacity Analysis (ICA) use with electric vehicle constraints, such as current levels available with a typical EV mission profile or existing measurements on the Battery Management System (BMS). Incremental Capacity Analysis is implemented in an innovative way and leads to a remaining capacity estimator with a high robustness to conditions of use variations, including an extended temperature range.A second method, dedicated to LMO chemistry, take advantage of the fact that the battery potential is representative of its state of charge. Partial Coulomb counting is thus performed, with a dynamic management of integration limits, depending on the battery state.Outcomes of this work are two complete and accurate SoH estimators, one for each chemistry, leading to a remaining capacity estimation accurate within 4 %
Charlon, Yoann. "Conception de dispositifs électroniques portés pour le suivi de l'état de santé des personnes âgées". Toulouse 3, 2014. http://thesesups.ups-tlse.fr/2440/.
Texto completo da fonteThe aging population has emerged as a major societal issue. Generally, the activity measurement is used as an indicator of the elderly health. The objective of this work is to develop a medical instrumentation to monitor person's activity at home. These technical solutions combine: wearable and ambient sensors, processing software, and user interfaces. This work is associated with two clinical applications: Monitoring of dependent people in a care unit with a wearable electronic patch and monitoring of frail older people at home with a smart shoe insole. The development of technical solutions is realized in several stages: engineering design, characterization and testing in conditions of uses. The results of these experiments include recommendations in terms of uses and improvements of the technical solution
Sallin, Mathieu. "Approche probabiliste du diagnostic de l'état de santé des véhicules militaires terrestres en environnement incertain". Thesis, Université Clermont Auvergne (2017-2020), 2018. http://www.theses.fr/2018CLFAC099.
Texto completo da fonteThis thesis is a contribution to the structural health analysis of the body of ground military vehicles. Belonging to the 20 - 30 tons range, such vehicles are deployed in a variety of operational contexts where driving conditions are severe and difficult to characterize. In addition, due to a growing industrial competition, the mobility function of vehicles is acquired from suppliers and is no longer developed by Nexter Systems. As a result, the complete definition of this function is unknown. Based on this context, the main objective of this thesis is to analyze the health of the vehicle body using a probabilistic approach in order to control the calculation techniques allowing to take into account the random nature of loads related to the use of ground military vehicles. In particular, the most relevant strategies for propagating uncertainties due to the terrain within a vehicle dynamics model are defined. This work describes how it is possible to manage an observation data measured in the vehicle for the purpose of assessing the reliability with respect to a given damage criterion. An application on a demonstrator entirely designed by Nexter Systems illustrates the proposed approach
Zenati, Ali. "Gestion haut niveau et suivi en ligne de l'état de santé des batteries lithium-ion". Thesis, Université de Lorraine, 2012. http://www.theses.fr/2012LORR0391/document.
Texto completo da fonteLithium-ion batteries are considered nowadays as the optimal issue for the energy storage systems, it is mainly due to their high energy and power density. Their performances, lifetime, and reliability are related and depend on the operating conditions such as the temperature and requested current by the application. And in order to track the evolution of the ageing of the battery, the determination of its State-Of-Health -SOH- is a major function to consider. This thesis presents both methodologies and techniques developed for the management of the lifetime of lithium-ion battery, and more particularly the assessment of its state-of-health, based on its own main parameters which are the capacity and the ohmic resistance. This approach allows to switch from a static SOH (based on a predefined ageing model, which take into account the calendar and cycling ageing of the battery, according to some characteristics such as the temperature and the courant of the battery tracked in real time) to a dynamic SOH (self-adaptive) using an online assessment of the previous parameters according to the operating conditions. The first chapter is an overview about the lithium-ion technology: characteristics, performances, cell design, choice and nature of the electrodes... The operating principle with the general equations are also developed. The second chapter is a state of the art of the lifetime prediction methodologies with the different kinds of classification of models and prediction techniques. Then in the third chapter, we will discuss our methodologies and the developed techniques, such as the use of statistics, fuzzy logic and rules of ageing to assess a dynamic state of health of the battery, which not only does take into account the static SOH (calendar and cycling ageing), but also considers the evolution of the ohmic resistance and the capacity of the battery, depending on the time and the operating conditions. This allows taking into consideration unlikely phenomena. Finally, in the last chapter, we will expose obtained results from validation tests. These tests were done under a power electrical testbench and a rapid prototyping testbench with real cells
Zenati, Ali. "Gestion haut niveau et suivi en ligne de l'état de santé des batteries lithium-ion". Electronic Thesis or Diss., Université de Lorraine, 2012. http://www.theses.fr/2012LORR0391.
Texto completo da fonteLithium-ion batteries are considered nowadays as the optimal issue for the energy storage systems, it is mainly due to their high energy and power density. Their performances, lifetime, and reliability are related and depend on the operating conditions such as the temperature and requested current by the application. And in order to track the evolution of the ageing of the battery, the determination of its State-Of-Health -SOH- is a major function to consider. This thesis presents both methodologies and techniques developed for the management of the lifetime of lithium-ion battery, and more particularly the assessment of its state-of-health, based on its own main parameters which are the capacity and the ohmic resistance. This approach allows to switch from a static SOH (based on a predefined ageing model, which take into account the calendar and cycling ageing of the battery, according to some characteristics such as the temperature and the courant of the battery tracked in real time) to a dynamic SOH (self-adaptive) using an online assessment of the previous parameters according to the operating conditions. The first chapter is an overview about the lithium-ion technology: characteristics, performances, cell design, choice and nature of the electrodes... The operating principle with the general equations are also developed. The second chapter is a state of the art of the lifetime prediction methodologies with the different kinds of classification of models and prediction techniques. Then in the third chapter, we will discuss our methodologies and the developed techniques, such as the use of statistics, fuzzy logic and rules of ageing to assess a dynamic state of health of the battery, which not only does take into account the static SOH (calendar and cycling ageing), but also considers the evolution of the ohmic resistance and the capacity of the battery, depending on the time and the operating conditions. This allows taking into consideration unlikely phenomena. Finally, in the last chapter, we will expose obtained results from validation tests. These tests were done under a power electrical testbench and a rapid prototyping testbench with real cells
Naud, François-Xavier. "L'État et la prévention sanitaire au dix-neuvième siècle". Bordeaux 4, 2004. http://www.theses.fr/2004BOR40003.
Texto completo da fonteDaniau, Côme. "Surveillance épidémiologique fondée sur des indicateurs de santé déclarée : pertinence et faisabilité d’un dispositif à l’échelle locale en santé environnement". Thesis, Paris, CNAM, 2014. http://www.theses.fr/2014CNAM0923/document.
Texto completo da fonteThis work presents an innovative epidemiological surveillance system in environmental health based on self-reported health indicators, closer to the complaints of the local population leaving around a source of environmental pollution: symptoms and loss of the quality of life. This approach is built up from a conceptual framework based on the psychometric theory and the transactional model of stress. A field application of this approach was carried out the population neighboring (n=1 495) the chemical industrial area of Salindres, Gard. This study verifies that self-reported health indicators measured with MOS SF-36 and SCL-90-R can be used to study populations exposed to multifactorial environmental risks. This study confirms that these indicators are relevant and sensitive when applied to environmental risk factors referring to the cognitive representations of risks, such as the sensorial perception of stimuli emitted by the industries. This work shows, besides, that the availability of national references for these indicators confers interpretability to these indicators, an essential quality criterion. This work discusses qualitatively the acceptability of measuring indicators of self-reported health in the population, proposes recommendations on communication for the setting of that kind of approach, and opens up avenues on management orientations
Tonglet, René. "Surveillance de la croissance et prévention de la morbidité du jeune enfant en milieu rural africain: éléments d'évaluation épidémiologique". Doctoral thesis, Universite Libre de Bruxelles, 1994. http://hdl.handle.net/2013/ULB-DIPOT:oai:dipot.ulb.ac.be:2013/212633.
Texto completo da fonteLecuyer, Luc. "Surveillance épidémiologique de la grippe dans les armées". Bordeaux 2, 1989. http://www.theses.fr/1989BOR25316.
Texto completo da fonteDab, William. "La décision en santé publique : valeur décisionnelle de la surveillance épidémiologique dans les situations d'urgence et de crise de santé publique". Montpellier 1, 1992. http://www.theses.fr/1992MON1T002.
Texto completo da fonteWang, Xin. "Online health monitoring of photovoltaic panels by converter-based impedance spectroscopy". Electronic Thesis or Diss., Université de Lorraine, 2024. https://docnum.univ-lorraine.fr/ulprive/DDOC_T_2024_0039_WANG.pdf.
Texto completo da fonteTo meet the world's growing energy needs and with a view to sustainable development, the use of solar energy is leading a significant increase in the installation of photovoltaic (PV) panels, enabling the production of clean and renewable electricity. However, the PV panels are susceptible to faults during operating. These faults can result in power losses, low efficiency, system instability, even pose a risk of security. Health monitoring can mitigate these issues and improve the overall operating reliability and efficiency of PV panels. Among existing health monitoring tools for PV panels, impedance spectroscopy (IS) provides a powerful, non-destructive way to acquire PV panels' internal impedance over a wide frequency range. Compared with specific workstation-based IS, converter-based IS can help reduce overall system costs and facilitate online applications, as no additional equipment is required. However, the control strategy of the power converter needs to be specifically designed. Firstly, the bandwidth of the converter will limit the maximum frequency of the perturbation signal. Obtaining a complete IS spectrum with sufficient accuracy can thus be challenging. Secondly, to ensure a quasi-maximum output power of PV panels even during IS implementation, a cooperative control scheme between maximum power point tracking (MPPT) and IS modes should be considered. The major objectives of this research are twofold: (1) to propose a systematic design guideline for control strategies of converter-based IS implementation; (2) to establish an appropriate AC equivalent circuit model (AC-ECM) for PV panels and extract valuable health indicators for online health monitoring of PV panels. In one aspect, a bi-level control strategy of the power converter including an upper-level and a lower-level control is proposed. The upper-level control achieves the cooperative control of different operating modes, including MPPT, injection point tracking (IPT) and IS modes. The lower-level control includes the separate control of each mode. Particularly, for the IS mode, both open-loop control and closed-loop control have been systematically studied and compared. Under open-loop control, an analysis of the intrinsic resonance of the converter and the frequency limitation of the perturbation signal is performed. Furthermore, an adaptive configuration method for the amplitude of the AC duty cycle is proposed to eliminate the influence of the resonance and enhance the accuracy of IS measurement. Under closed-loop control, based on three commonly used compensation controllers, two control methods, named unified control and separated control, are designed and compared. In the unified control, a single proportional-integral (PI) controller controls the DC and AC components together to meet the control objectives. Meanwhile, in the separated control, a segmented lower pass filter (LPF) with a variable cut-off frequency is designed to effectively separate the DC component of the PV panel current from the AC perturbation signal. A proportional (P) and a quasi-proportional resonant (QPR) are further applied separately to control the AC component. In the other aspect, based on the acquired IS measurements, a simplified AC-ECM of the PV panel is proposed. This AC-ECM offers a fitting approach for the incomplete spectrum obtained through converter-based IS. Additionally, four health features are extracted and defined for monitoring the health states of the PV panel under various operating conditions. Finally, an experimental platform has been developed for online IS implementation. An experimental study has been conducted to verify that under the proposed control strategies, reliable and accurate IS measurements can be achieved. Under various operating conditions, the effectiveness of the online IS monitoring method based on the extracted features of the PV panel is verified as well
Algarra, Mireya. "La protection sociale de la santé à l'état vénézuélien : Le cas de la ville de Maracaibo". Caen, 2010. http://www.theses.fr/2010CAEN1591.
Texto completo da fonteThis work proposes scan configuration, and coverage of social protection in health in Venezuela and its compatibility with the social representation exists on this aspect. The method used is based on analysis of its characteristics by contrasting it with the results of the field work was this title on a performs Internet population of Maracaibo, city which constitutes illustrative case from the present study. From hypothesis enunciated is established between the representation of social protection in health seen through opportunities for medical attention and effective coverage. Results show an incompatibility between these aspects because nearly 59% of the population is not provided by the State of health and 80% is measured against a standard d "help. However, two thirds of the respondents think the Mision Barrio inside is not bad and even when it was found that 51% of the surveyed pet not fallen this Mision centers where they have been needed and only 36% are going. More 100% pet interviewee visited popular firms do not found their health, which demonstrates that this policy does not protect the vénézuéliens in the health field
Gariépy, Marie-Claude. "Surveillance de la sécurité de la vaccination H1N1 chez les travailleurs de la santé". Thesis, Université Laval, 2011. http://www.theses.ulaval.ca/2011/28528/28528.pdf.
Texto completo da fonteRichard, Théo. "Capteur sans électronique pour la surveillance sans fil de la santé des infrastructures maritimes". Thesis, Nantes, 2020. http://www.theses.fr/2020NANT4064.
Texto completo da fonteThe natural evolution of hydraulic concrete as well as the effect generated by pathogens (i.e. chloride ions) have a direct impact on the durability of reinforced concrete structures. This thesis project aims at implementing a new SHM approach to engineering structures. This approach is based on the development of a passive, autonomous and low-cost sensor, directly integrated into the concrete coating of the structures and communicating wirelessly with external interrogators. This technological solution aims at establishing a predictive maintenance process based on the monitoring of chloride penetration fronts and therefore of reinforcement corrosion. A preliminary phase of digital modelling and experiments allowed us to optimize the choice of the sensor topology. The first prototypes of drowned antennas insensitive to changes in the dielectric states of healthy and degraded concrete were produced. These antennas were then coupled to loads on the periphery of their radiating surfaces. These fillers are sensitive to chlorides. The combination of these two elements defines the architecture of the passive and autonomous sensor. The operating principle of the sensor is related to the length reduction of its load, which is in direct contact with chlorides due to corrosion. his degradation induces a change in the resonance frequency of the sensor, which acts as an indicator of degradation of the concrete coating. By reflecting the EM waves emitted from an antenna on the surface of the structure, it is possible to recover information about the corrosion state of the load. This defines the principle of our technological solution, without power supply and without integrated electronics. Finally, extensive experimental campaigns on laboratory-controlled concrete test bodies which represent the regional fleet of structures, enabled us to validate our approach
Sirois, Marie-Josée. "Impact des barrières à l'accessibilité aux soins de réadaptation sur l'état de santé des victimes de traumatismes". Thesis, Université Laval, 2006. http://www.theses.ulaval.ca/2006/24102/24102.pdf.
Texto completo da fonteAnneville, Orlane. "Diagnostic sur l'évolution de l'état de santé écologique du Léman par l'analyse des séries chronologiques du phytoplancton". Lyon 1, 2001. http://www.theses.fr/2001LYO10107.
Texto completo da fonteBencheikh, Ghita. "Planification conjointe des activités de production et de maintenance en fonction de l'état de santé des ressources". Thesis, Toulouse, INPT, 2020. http://www.theses.fr/2020INPT0005.
Texto completo da fonteAs production systems have become highly developed, they use more complex processes and more sophisticated machines. However, despite how powerful the machines may be, their health status deteriorates over time and through their use. Maintenance processes are therefore unavoidable for a production system, because planning production without taking maintenance into account can lead to costly re-scheduling. In order to increase the productivity of companies, waiting for production equipment failures to occur before maintaining them is no longer an appropriate maintenance policy because production schedules are often disrupted due to unexpected machine downtime. In addition, corrective maintenance operations, often carried out on an emergency basis, take longer than preventive maintenance operations for which logistics is anticipated. For this reason, as part of conditional maintenance (CBM), predictive maintenance policies are attracting increasing interest from researchers because they make it possible to anticipate failures by scheduling maintenance tasks on equipment components according to their health status and their expected remaining useful life. Indeed, recently developed prognostic and health management (PHM) methods process the data provided by monitoring sensors that can be installed in equipment to provide a decision support tool that allows optimal use of resources. However, these proposed methods are only used for maintenance planning without taking into consideration future resource uses for production. Generally, production and maintenance tasks are planned separately in real manufacturing systems. This often leads to conflicts between these two functions, because the operations of each are perceived as a source of disruption by the other. These conflicts affect the overall productivity of companies, hence the importance of cooperation between production and maintenance managers to ensure punctuality and quality of production to improve the company's profits. Joint production planning and maintenance thus seems more appropriate. However, the implementation of such planning requires prior knowledge of the availability of the machines. It seems that the fusion of concepts from scheduling, CBM and PHM has the potential to allow joint planning of production and maintenance tasks based on the health status of the machines. The joint planning method we propose is based on Multi-Agent Systems (MAS) which have allowed us to model each entity of the problem as an autonomous agent. The MAS proposed in this work is composed of agents responsible for manufacturing orders (customer agents), machines (production agents) and maintenance resources (maintenance agents) who communicate with each other through a blackboard (environment). Producer agents schedule production operations based on the current and future health status of their machines, estimated using PHM techniques, and plan for maintenance activities when the health status of the machines becomes critical. Through a communication protocol between the agents, they manage to converge to a solution that satisfies all decision-makers. Our model, which we have called SCEMP, is a flexible, generic and distributed model that can be used in a wide variety of systems
Gilbert, Marie-Line. "Utilisation du système téléphonique Info-Santé CLSC pour la surveillance des gastro-entérites d'origine hydrique". Thesis, Université Laval, 2004. http://www.theses.ulaval.ca/2004/22346/22346.pdf.
Texto completo da fonteTchéré, séka Iphigénie marie-laure. "Surveillance de la santé bucco-dentaire en Afrique : recommandations méthodologiques pour le recueil standard d’informations". Thesis, Lyon 1, 2009. http://www.theses.fr/2009LYO10278.
Texto completo da fonteThis work is a contribution to the activities of the World Health Organization relative to the implementation and the distribution of standard tools in the African countries to reach an efficient integration of the essential oral health indicators in surveillance in African countries. These essentials indicators fit into the objectives of the new millennium and exceed the idea according to which " the social problems have to be developed in an isolated way. To be in phase with this new paradigm, African countries have to face these new approaches which require that efforts be realized in all development sectors. Twenty two indicators recommended by the World Health Organization for the African region give opportunities to improve oral health activities on the national level and develop an integrated community approach which is the more operational for surveillance and prevention of oral diseases. The collect of the indicators in Ivory Coast motivates this study, which results are recorded in this document. The findings are the result of many years of research and practice related to the implementation and development of oral health activities in Côte d'Ivoire. Two questionnaires were evaluated and measure respectively oral health indicators for general population, and for children and teenagers. Analyses conclude in relatively good psychometrics properties, but imply the taking account of many recommendations which aim to increase the validity and the feasibility of these questionnaires in the context of the Côte d'Ivoire. Their generalization in the African region requires future researches in a way of their optimization in an integrated operational community based-approach, and a redefinition of the role of local actors in sanitary district
Gilbert, Marie-Line. "Utilisation du système téléphonique Info-Santé CLSC pour la surveillance des gastro-entérites d'origine hydrique". Master's thesis, Université Laval, 2006. http://hdl.handle.net/20.500.11794/18224.
Texto completo da fonteQuénel, Philippe. "La surveillance épidémiologique des épidémies de grippe : validation d'un critère d'alerte épidémique". Paris 11, 1993. http://www.theses.fr/1993PA11T005.
Texto completo da fonte