Dissertations / Theses on the topic 'Inspection qualité'
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Guermonprez, Philippe. "Inspection automatique des matériaux plans texturés." Valenciennes, 1994. https://ged.uphf.fr/nuxeo/site/esupversions/e4329f80-b368-4f43-a639-0f80c3bb838d.
Full textBarlet, Christophe. "Place et rôle de l’inspection-contrôle dans le champ des établissements et services sanitaires, sociaux et médico-sociaux." Thesis, Rennes 1, 2020. http://www.theses.fr/2020REN1G007.
Full textInspection-control has undergone several changes that question its place and role, particularly in the scope of this study. The multiplicity of actors and inspection-control procedures makes it complex to understand and questions the legal nature and legal regime applicable to the different types of controls. Furthermore, inspection and control now appears to be called into question by the standardization of professional practices and new approaches to support and continuously improve quality in the establishments and services in the field under study. These approaches, devolved to public authorities or private organizations, take the form of certification of health care institutions, accreditation of professionals in health care, evaluation of social and medico-social institutions and services, or auditing. They are largely based on licensing and contractualization law. It is thus necessary to investigate whether a good activity of the State is only rule-making or also regulation, whether control has changed in nature, whether it has diversified or whether it has regressed to the benefit of other, more flexible activities under the influence of competition law, Community law and the State's budgetary situation. The question of the legality of inspection as a particular control and its articulation with quality approaches guide this research
Tout, Karim. "Automatic Vision System for Surface Inspection and Monitoring : Application to Wheel Inspection." Thesis, Troyes, 2018. http://www.theses.fr/2018TROY0008.
Full textVisual inspection of finished products has always been one of the basic and most recognized applications of quality control in any industry. This inspection remains largely a manual process conducted by operators, and thus faces considerable limitations that make it unreliable. Therefore, it is necessary to automatize this inspection for better efficiency. The main goal of this thesis is to design an automatic visual inspection system for surface inspection and monitoring. The specific application of wheel inspection is considered to study the design and installation setup of the imaging system. Then, two inspection methods are developed: a defect detection method on the product’s surface and a change-point detection method in the parameters of the non-stationary inspection process. Because in an industrial context it is necessary to control the false alarm rate, the two proposed methods are cast into the framework of hypothesis testing theory. A parametric approach is proposed to model the non-anomalous part of the observations. The model parameters are estimated to design a statistical test whose performances are analytically known. Finally, the impact of illumination degradation on the defect detection performance is studied in order to predict the maintenance needs of the imaging system. Numerical results on a large set of real images highlight the relevance of the proposed approach
Macaire, Ludovic. "Inspection d'états de surfaces métalliques par vision linéaire : Application au contrôle qualité continu en sidérurgie." Lille 1, 1993. http://www.theses.fr/1993LIL10005.
Full textGama, Alves Isabel Teresa. "Le rôle de l'action publique pour la qualité dans l'agro-alimentaire en France : étude de cas de la filière lait." Toulouse 1, 1996. http://www.theses.fr/1996TOU10027.
Full textQuality has drawn more and more attention from governments in the 80's and public policies devoted to this point have been established in the 90's through specific laws and institutions. As quality of a product is related not only to its production but also to its marketing, we can define quality policies as a framework of "rules" related to this environment. From the points of views of public policies and quality, the foodstuff industry is in a special position as it is related both to agriculture and industry as well as to human health. Public policies cannot be defined independently of this framework including different kinds of production models. Therefore our central hypothesis was that quality is a social construction and results from compromises. The apparition of new actors as well as new values in the 80's and 90's has for consequences that public intervention used new channels and new mediations. Moreover, in order to analyze the evolution of public policies, one must take into account negotiations related to quality that concern different rules (and especially trademarks and other labels). Links between rules and mediators have also changed so that heterogeneity that has to be taken into account to get workable compromises has its counterpart in the public institutions specialized or not local and national level as well as the EU level. In conclusion, this dynamics and the new conception of the administration that delegate and negotiate more often than previously leads to place the analysis of quality policies as a multi-stage action
Guitton, Philippe. "Une méthode de contrôle statistique de la qualité en fabrication continue : Icare (fondements théoriques et mise en oeuvre)." Rouen, 1987. http://www.theses.fr/1987ROUES040.
Full textNurit, Marvin. "numérisation et caractérisation de la réflectancelocale des surfaces complexes pour l'inspection visuelle." Electronic Thesis or Diss., Bourgogne Franche-Comté, 2022. http://www.theses.fr/2022UBFCK112.
Full textMastering the visual perception of the surfaces of manufactured products is a central issue for industry. However, in industry, the quality of surfaces is often assessed by human inspectors. Only a few specific cases use an instrumental or photometric approach. Among the photometric approaches, one of them is experiencing significant growth: Reflectance Transformation Imaging (RTI). The RTI makes it possible to obtain a reduced and simplified estimate of the Bidirectional Reflectance Distribution Function (BRDF) and an estimate of the geometry of the surface. However, this technique has limitations in terms of data acquisition and processing. The objective is therefore to correct some of these limits in order to improve the RTI and, consequently, the visual quality control of surface conditions in industry.One of these limitations is the large amount of data, complex to analyze, obtained with an RTI acquisition. We propose a methodology to characterize the appearance of surfaces from RTI measurements. The characterization of surface states is based on the use of appearance, statistical and geometric descriptors. From the descriptors extracted from the RTI acquisitions, we propose a method to estimate the multi-scale and multi-level visual salience in each pixel and thus make it possible to discriminate surface anomalies. A methodology, to segment RTI data using salience, is then applied to an application case. The method makes it possible to determine the most relevant descriptors for segmentation. Distance calculation is extended to RTI acquisitions in order to compare surface states. These methods are based on the Mahalanobis distance using the descriptors.Another limitation of RTI is measurement bias. Some descriptors are invariant to these measurement biases except that of the exposure time for which no descriptor is insensitive. We then propose to use High Dynamic Range (HDR) coupled with RTI (HD-RTI). The coupling is done in such a way as to take into account the specificities of each of the techniques in order to optimize the RTI acquisition time while allowing the full measurement of the Dynamics of the scene in each angular position of the light source. With HD-RTI stereo-photometric data, we can virtually reconstruct the scene by simulating an arbitrary exposure time, but also better characterize and therefore discriminate surface anomalies
Megherbi, Mehdi. "Extraction et analyse de traces d'oligo- et polysaccharides - : application au contrôle qualité des miels." Lyon 1, 2006. http://www.theses.fr/2006LYO10285.
Full textThe fight against the fraud in the agro-alimentary field is a permanent problem to warrant quality products to the consumers. The limited production and the high price of honey provoke falsification practices which are difficult to detect on its origin (appellation) and its composition (by the deliberated addition of cheap sugar syrup). The analysis of sugars, major : In order to improve the current methods for the authentification and the quality control of honeys, the search of new probes was undertaken by solid phase extraction and chromatography of oligo- and polysaccharides. In spite of the great variability of the compositions in these natural products, chromatographic fingerprints allowed to discriminate some varieties of honey and to detect adulterations from an addition of 1 % of sugar syrup. This approach leads new solutions and perspectives to certify a variety of honey and to fight against the falsification techniques which exist on the market
Courvalin, Corinne. "Le rôle du contrôleur dans un réseau hybride à mandat public et la gestion du risque." Paris 10, 2005. http://www.theses.fr/2005PA100018.
Full textThis research, of exploratory nature, aims at understanding the role of the controller and the impact of his decisions, on the level of the risk management, in a hybrid network with public mandate. This role was apprehended starting from the analysis of food crises. Into final, it was proposed an exploratory model of epidemioprevention. The case-study method (six) was used. The bibliography related to control, the rule, and the risk. The results highlighted failures and internal deviances of internal control of the company, not highlighted by official controls. Failures were observed on the level of the external control exerted by the controller on the company. The regulation was observed inequitable, contradictory, derogatory and hypertrophic. The controllers resulting from the same Corps are characterized by a monoculture, a corporatism, and a situation of quasi-monopoly on the food control
Canivet, Michel. "Inspection de défauts verriers par vision artificielle : procédés de détection et d'identification des glaçures à la bague de bouteilles en verre transparent par analyse d'images." Saint-Etienne, 1995. http://www.theses.fr/1995STET4001.
Full textBettayeb, Belgacem. "Conception et évaluation des plans de surveillance basés sur le risque. Limitation des incertitudes qualité avec des ressources limitées de maîtrise." Phd thesis, Université de Grenoble, 2012. http://tel.archives-ouvertes.fr/tel-00859830.
Full textMalek, Abdel Salam. "Online fabric inspection by image processing technology." Phd thesis, Université de Haute Alsace - Mulhouse, 2012. http://tel.archives-ouvertes.fr/tel-00720041.
Full textBaudet, Nathalie. "Maîtrise de la qualité visuelle des produits - Formalisation du processus d'expertise et proposition d'une approche robuste de contrôle visuel humain." Phd thesis, Université de Grenoble, 2012. http://tel.archives-ouvertes.fr/tel-00807304.
Full textFéral, François. "L'État et les fraudes commerciales." Montpellier 1, 1991. http://www.theses.fr/1991MON10034.
Full textCommercial fraud to be linked to merchant societies but their social and judicial system is as varied as complex. Having put an end to corporative bodies, the state administration is directly engaged in the repression of fraud at the beginning of the twentieth century. These penal institutions still constitute today the essential legal basis of its intervention. Progressively, one can notice a modernisation and an improvement of this control through a multiplication of administrative procedures. European authorities reinforce this phenomenon by extending and intensifying the control of authorities on the market
Rezaeimalek, Mohammad. "Planification des activités d’inspection sous incertitude basée sur les conditions de maintenance préventive d’un système de production série." Thesis, Paris, ENSAM, 2019. http://www.theses.fr/2019ENAM0007.
Full textPart Quality Inspection Planning (PQIP) is a significant problem in multi-stage manufacturing systems. Because of an existing strong impact of Preventive Maintenance (PM) activities on the defective production rate (which is the main input of the PQIP), developing an integrated planning for the part quality inspection and PM protects system from a local optimum. This thesis presents mixed-integer linear programming models for the integrated planning problem of the part quality inspection and PM activities in a serial multi-stage manufacturing system. The models concurrently determine the right time and place for performing the above-mentioned activities while the stages are deteriorating. These two decisions are made while the models are to minimize the total cost (including the production, PM, inspection, scrap, repair, and the penalty of shipped defective items) and maximize system productivity. Notably, the system productivity is formulized as a non-linear measure, and then it is linearized by the piecewise linear approximation technique. In addition, the uncertainty about the estimation of cost components and demand is handled by a robust possibilistic approach. A numerical example and a real case study are investigated to validate and verify the proposed models. The most important result of this research is that the determination of inspection locations along a manufacturing line in different periods of time regarding the impact of preventive maintenance activities on defective production probability results in a more efficient system
Chamla, Marie-Laure. "Les établissements pharmaceutiques de la compétence de l'Agence du médicament." Paris 5, 1994. http://www.theses.fr/1994PA05P260.
Full textKlankamsorn, Sirang. "Quality economics of inspection system with inspection error : simulation approach." Thesis, University of Nottingham, 2006. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.434088.
Full textMehenni, B. "Fast visual inspection for quality control." Thesis, University of Nottingham, 1989. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.328421.
Full textGadyuchko, Andrey, and Sören Rosenbaum. "Nondestructive quality inspection of solenoid valves." Saechsische Landesbibliothek- Staats- und Universitaetsbibliothek Dresden, 2016. http://nbn-resolving.de/urn:nbn:de:bsz:14-qucosa-200756.
Full textSong, Hakjoon. "PCAOB INTERNATIONAL INSPECTION AND AUDIT QUALITY." Diss., Temple University Libraries, 2012. http://cdm16002.contentdm.oclc.org/cdm/ref/collection/p245801coll10/id/175332.
Full textPh.D.
The Public Company Accounting Oversight Board (PCAOB) has recently begun inspecting foreign audit firms. An important policy concern is that several foreign jurisdictions have refused to allow the PCAOB to conduct inspections of their audit firms. In this dissertation, I investigate (1) whether audit quality is higher for client firms (henceforth "complying" clients) whose foreign auditors have been inspected by the PCAOB, compared to client firms (henceforth "blacklisted" clients) of foreign auditors whose governments have refused inspections by the PCAOB, and (2) whether audit quality improves in the post inspection period for clients of inspected foreign auditors. I use abnormal accruals, total accruals, value relevance, and the likelihood of receiving a going concern opinion as proxies for audit quality. I conduct empirical tests on two samples, a cross-sectional sample consisting of blacklisted and complying clients, and a longitudinal sample of clients of inspected foreign auditors before and after PCAOB inspections. For the going-concern models, the samples are confined to financially distressed firms, which are either clients with negative net income or negative operating cash flows or clients in the top quartile in the bankruptcy probability distribution. The cross-sectional models indicate that blacklisted clients have significantly higher abnormal and total accruals, lower value relevance and a lower likelihood of receiving a going concern opinion, than complying clients, suggesting that clients of PCAOB-inspected auditors seem to have higher audit quality. Moreover, longitudinal analyses of clients of inspected foreign auditors show that abnormal accruals and total accruals are lower after PCAOB inspections than before inspections, and value relevance is greater after inspections than before. The likelihood of receiving a going concern opinion is higher after PCAOB inspections than before inspections for one of the two distressed-firm samples. Overall, the results are generally consistent with the PCAOB's claim that the clients of foreign audit firms that have undergone PCAOB inspections have benefited from the inspections. Further analyses indicate that the benefits are concentrated in jurisdictions where the PCAOB has conducted joint inspections with local authorities, in countries where legal traditions follow common law, and for clients of Big 4 auditors.
Temple University--Theses
Millman, Michael Peter. "Computer vision for yarn quality inspection." Thesis, Loughborough University, 2000. https://dspace.lboro.ac.uk/2134/34196.
Full textCondat-Ouillon, Claire. "Etude du comportement des constituants laitiers en milieu fortement sodique et de leurs interactions en filtration sur membrane : application à la régénération par filtration tangentielle des solutions alcalines de NEP de l'industrie laitière." Toulouse, INPT, 1995. http://www.theses.fr/1995INPT014G.
Full textTaseli, Aysun. "The Effects Of Inspection Error And Rework On Quality Loss For A Nominal-the-best Type Quality Characteristic." Master's thesis, METU, 2004. http://etd.lib.metu.edu.tr/upload/12605399/index.pdf.
Full textKwok, Tak Lung. "Quality improvement and inspection in supply chains /." View abstract or full-text, 2004. http://library.ust.hk/cgi/db/thesis.pl?IEEM%202004%20KWOK.
Full textLefley, M. "The automated inspection of knitted fabric." Thesis, De Montfort University, 1988. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.380643.
Full textAlexander, Adam Ross Washer Glenn A. "Guideline for implementing quality control and quality assurance for bridge inspection." Diss., Columbia, Mo. : University of Missouri--Columbia, 2009. http://hdl.handle.net/10355/6560.
Full textLindgren, Eric, and Thomas Stenberg. "Quality Inspection and Fatigue Assessment of Welded Structures." Thesis, KTH, Lättkonstruktioner, 2011. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-31700.
Full textCarpinetti, Luiz C. R. "Methods for computer aided inspection of geometric tolerances." Thesis, University of Warwick, 1993. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.387402.
Full textHooks, Kevin. "Enhancing quality inspection through the integration of quality control and computer aided design a framework." Ohio : Ohio University, 1994. http://www.ohiolink.edu/etd/view.cgi?ohiou1177100770.
Full textAlcock, Robert J. "Techniques for automated visual inspection of birch wood boards." Thesis, Cardiff University, 1996. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.323153.
Full textBoyer, Jacob, Janos C. Keresztes, Wouter Saeys, and John Koshel. "An automated imaging BRDF polarimeter for fruit quality inspection." SPIE-INT SOC OPTICAL ENGINEERING, 2016. http://hdl.handle.net/10150/622517.
Full textLiu, Xiaojie. "Quality Inspection of Screw Heads Using Memristor Neural Networks." OpenSIUC, 2019. https://opensiuc.lib.siu.edu/theses/2621.
Full textPiepmeier, Jenelle Armstrong. "Textural analysis for defect detection in automated inspection systems." Thesis, Georgia Institute of Technology, 1995. http://hdl.handle.net/1853/19108.
Full textPesante-Santana, José A. "The Effects of Multitasking on Quality Inspection in Advanced Manufacturing Systems." Diss., Virginia Tech, 1997. http://hdl.handle.net/10919/29296.
Full textPh. D.
Curram, J. B. "Computer-aided design in sampling inspection by attributes." Thesis, University of Kent, 1988. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.384480.
Full textSegal, Jo Ann. "The Effect of Decreasing Defect Probabilities on Quality Control Inspection." Thesis, University of North Texas, 1998. https://digital.library.unt.edu/ark:/67531/metadc278158/.
Full textPuntel, Luis. "Sampling Plan for Incoming Material Inspection at Sanden." Thesis, University of North Texas, 1995. https://digital.library.unt.edu/ark:/67531/metadc278774/.
Full textBoukouvalas, Constantinos R. "Colour shade grading and its applications to visual inspection." Thesis, University of Surrey, 1996. http://epubs.surrey.ac.uk/843494/.
Full textFreear, Nicholas David. "Automated visual inspection for the quality control of pad printing." Thesis, University of Birmingham, 2002. http://etheses.bham.ac.uk//id/eprint/890/.
Full textKnutson, Matthew D. "Qualification of inspection techniques for detecting leaks in pouched medical devices at Company XYZ." Online version, 2008. http://www.uwstout.edu/lib/thesis/2008/2008knutsonm.pdf.
Full textLankshear, Jane F. "Quality and diversity in Anglican primary schools : a study of denominational inspection." Thesis, University of Wales Trinity Saint David, 1999. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.683378.
Full textHarjumaa, L. (Lasse). "Improving the software inspection process with patterns." Doctoral thesis, University of Oulu, 2005. http://urn.fi/urn:isbn:9514278941.
Full textSeawright, Larry L. "Reducing learning object inspection/evaluation costs in instructional design /." Diss., CLICK HERE for online access, 2003. http://contentdm.lib.byu.edu/ETD/image/etd232.pdf.
Full textCockram, Trevor John. "The use of Bayesian networks to determine software inspection process efficiency." Thesis, Open University, 2001. http://oro.open.ac.uk/58170/.
Full textSnelling, Glynn. "Ofsted inspections : do they promote improvement in teaching quality?" Thesis, University of Leicester, 2002. http://hdl.handle.net/2381/31009.
Full textEkstrand, Henrik. "Quality of wildlife damage field inspections and necropsy forms." Thesis, Uppsala universitet, Institutionen för biologisk grundutbildning, 2020. http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-416183.
Full textJin, Fenghua. "Machine vision technology for food quality and safety inspections." College Park, Md.: University of Maryland, 2008. http://hdl.handle.net/1903/8772.
Full textThesis research directed by: Fischell Dept. of Bioengineering . Title from t.p. of PDF. Includes bibliographical references. Published by UMI Dissertation Services, Ann Arbor, Mich. Also available in paper.
Lamoreaux, Phillip T. "Does PCAOB Inspection Exposure Affect Auditor Reporting Decisions?" Diss., The University of Arizona, 2013. http://hdl.handle.net/10150/306135.
Full textZaklouta, Hadi. "Cost of quality tradeoffs in manufacturing process and inspection strategy selection." Thesis, Massachusetts Institute of Technology, 2011. http://hdl.handle.net/1721.1/76133.
Full textCataloged from PDF version of thesis.
Includes bibliographical references (p. 106-108).
In today's highly competitive markets manufacturers must provide high quality products to survive. Manufacturers can achieve higher levels of quality by changing their manufacturing process and/or by product inspection where a multitude of different strategies are often available. Each option has its own cost implications that must also be taken into account. By reconciling the competing objectives of quality maximization and cost minimization, a cost of quality approach serves as a useful framework for comparing available manufacturing process and inspection alternatives. Still, any rigorous comparison requires both a metric as well as a profound understanding of cost of quality tradeoffs. The cost of quality tradeoffs in manufacturing process and inspection strategy selection are examined through a probabilistic cost of quality model explored analytically using a sample set of fundamental inspection strategies (reinspect rejects, reinspect accepts and single inspection) and applied to the case of electric vehicle battery pack assembly. From an expected value point of view a series of parametric sensitivity analyses reveal that complex tradeoffs between manufacturing process, inspection, internal and external failure costs determine the optimal manufacturing process and inspection strategy combination. In general, reinspect rejects minimizes internal failure costs, reinspect accepts minimizes external failure costs and single inspection lies in between while minimizing inspection costs. This thesis illustrates the fact that results are scenario specific and depend on product cost-, manufacturing process and available inspection method attributes. It is also observed that manufacturing process improvement often coincides with a need to change inspection strategy choice, thereby indicating that manufacturing process and inspection strategy selection should not be performed independently of each other. This thesis demonstrates that the traditional expected value approach for evaluating cost of quality implications of manufacturing and inspection is often misleading. Decision tree formulations and discrete event simulations indicate that cost of quality distributions are asymmetric. High internal- and external failure costs, manufacturing process non-conformance rates and inspection method error rates are contributing factors. The alternative metric of expected utility captures decision makers risk aversion to high cost outliers and changes the criteria for optimality and favors inspection strategies and manufacturing processes that minimize external failure events with increasing risk intolerance. In the examined case of electric vehicle battery pack assembly both material- and external failure costs are very high. Analytical and discrete event simulation results indicate that for the given welding process the inspection strategy that minimizes external failure costs is optimal from an expected cost point of view as well as at high degrees of risk aversion. This result is shown to be sensitive to parameters driving the cost and probability of external failure events.
by Hadi Zaklouta.
S.M.
Valieva, Inna. "Photometric Methods for Autonomous Tree Species Classification and NIR Quality Inspection." Thesis, KTH, Maskinkonstruktion (Inst.), 2015. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-176266.
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