Dissertations / Theses on the topic 'Interrogation Technique'
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Hwang, Nick H. "The Need for Interrogation Reform in the United States." Scholarship @ Claremont, 2014. http://scholarship.claremont.edu/cmc_theses/907.
Full textEl, kanawati Wassila. "Caractérisation élémentaire par interrogation neutronique avec la technique de la particule associée." Phd thesis, Université de Grenoble, 2011. http://tel.archives-ouvertes.fr/tel-00769397.
Full textEl, Kanawati Wassila. "Caractérisation élémentaire par interrogation neutronique avec la technique de la particule associée." Thesis, Grenoble, 2011. http://www.theses.fr/2011GRENY024/document.
Full textThe EURITRACK inspection system, based on the associated particle technique, aims at detecting explosives and narcotics in cargo containers with 14 MeV neutrons produced by the D(T,)n reaction. Alpha particle and neutron are emitted almost back to back. Reactions induced by fast neutrons produce gamma rays which are detected in coincidence with the alpha particle to determine the neutron direction. Neutron time-of-flight allows to determine gamma-ray origin inside the container. Information concerning material composition is obtained by unfolding the gamma spectrum into elemental signatures using a database of elemental spectra (C, O, N, Fe…). Carbon, oxygen, and nitrogen count ratios are converted into chemical proportions to distinguish illicit and benign organic materials. Conversion factors based on Monte Carlo simulations have been calculated and validated experimentally, taking into account neutron slowing down and photon attenuation in cargo materials. Application to the elemental characterisation of radioactive wastes is also studied by numerical simulation, with shields and collimators to limit the background due to waste radiations
Deyglun, Clément. "Détection de matière nucléaire par interrogation neutronique avec la technique de la particule associée." Thesis, Grenoble, 2014. http://www.theses.fr/2014GRENY058.
Full textThis thesis investigates the detection of Special Nuclear Materials (SNM) by neutroninterrogation with the Associated Particle Technique (APT). 14 MeV neutrons areproduced from the 3H(2H,n)α fusion reaction in a sealed tube neutron generatorembedding a position-sensitive alpha detector. The alpha detector determines thedirection of the nearly opposite neutron and its time of flight. The detection of at leastthree prompt fission particles in coincidence with the tagged neutron signs the presenceof SNM. The acquisition system and simulation tools have been qualified in passive modewith radioactive sources and active mode with the generator and various targets,validating the simulation of inspection systems with MCNP-PoliMi. Calculations showthat the detection of a few kilograms of shielded SNM with the ATP is possible in ironcargo container, with the prompt fission neutrons signal. Detection is more difficult inorganic matrices due to tagged- and prompt fission neutrons scattering on hydrogennuclei. Furthermore, the use of plastic scintillators instead of 3He counters was studied tocharacterize the plutonium in the radioactive waste by passive coincidences measurement.Measurements at fast time scales of fast-neutrons instead of the long time scales ofthermal-neutrons reduce random coincidences that can occur with high (,n) reactionrate. The scintillators are however sensitive to gamma rays and cross-talk betweenadjacent detectors. Therefore, we used data-analysis algorithms to minimize cross-talkcontribution to measured three-fold coincidences
NUNES, LUIZ CARLOS DA SILVA. "ANALYSIS OF THE DEMODULATION TECHNIQUE BASED ON FIXED FILTERS IN THE INTERROGATION OF FIBER BRAGG GRATING SENSORS." PONTIFÍCIA UNIVERSIDADE CATÓLICA DO RIO DE JANEIRO, 2004. http://www.maxwell.vrac.puc-rio.br/Busca_etds.php?strSecao=resultado&nrSeq=5385@1.
Full textDEUTSCHER AKADEMISCHER AUSTAUSCHDIENST
A análise da técnica de demodulação usada para interrogar sensores a rede de Bragg em fibras ópticas baseadas em filtros fixos foi realizada teoricamente e experimentalmente. Diferentes configurações de sistemas foram analisadas modificando a posição espectral dos filtros, assim como os níveis de potência óptica obtidos nos fotodetectores. Foram realizadas medidas com o tempo de integração que variavam de 0.01 a 1s e estimado o limite de baixa freqüência. Comparação entre os resultados experimentais e simulados mostram boa concordância, e extrapolações indicam que seria possível chegar a uma faixa de medida da ordem de 7 nanômetros, com incertezas equivalentes menores que 2 picometros, na medida da posição de pico do sensor. Foi feita uma análise da possibilidade de utilização desta técnica para medida simultânea de pressão e temperatura com uma única rede sensora. Na realização experimental foi usado um transdutor de pressão que transferia uma força transversal à fibra, proporcional à pressão atuante, gerando birrefringência na região da rede de Bragg. Foi possível obter valores de pressão com a faixa dinâmica de 400 psi com incerteza máxima de 4 psi e simultaneamente temperaturas com variação de 28 a 50 graus Celsius com incerteza máxima de 0.1 graus Celsius. Adicionalmente, foram estudados os efeitos gerados em uma multiplexação temporal (TDM) de sensores a rede de Bragg quando os sensores se encontram superpostos na mesma posição espectral. Nesta análise é confrontada a técnica de demodulação utilizando dois filtros fixos com a técnica baseada na posição espectral. Os resultados indicam que a técnica baseada em filtros fixos apresenta vantagem, permitindo um número significativamente maior de sensores. E também, foi analisado o distúrbio provocado no espectro da rede sensora quando a fonte de luz usada para interrogar a rede tem uma modulação espectral que varia com a temperatura. Finalmente, foi apresentado um sistema de multiplexação (TDM/WDM), completamente polarizado, capaz de interrogar dezenas de sensores a rede de Bragg escrito em fibras de alta birrefringência. O sistema de multiplexação consistiu em uma chave óptica integrada, baseada em um interferômetro de Mach-Zehnder com configuração X-Y, e em um espectrômetro com um CCD linear como elemento de detecção.
The analysis of a demodulation system for fiber Bragg grating sensors based on two fixed spectral filters has been carried out both theoretically and experimentally. Different system configurations were analyzed by modifying the spectral position of the filters as well as the optical power-level of the signal reaching the two photo-detectors. Measurements with integration times that varied from 0.01 to 1 second have been compared with the low frequency limit predicted for long-term operation. Comparisons between simulated and experimental results show good agreement, and extrapolations indicate that it should be possible to achieve a dynamic range of the order of 7 nanometers, with uncertainties equivalent to less than 2 picometers, in measurements of the sensor peak position. Applications based on this system were carried out. An analysis of simultaneous measurement of temperature and pressure with only one FBG sensor using transducer of pressure to transfer a lateral force to the fiber, proportional to the applied pressure, generating birefringence at grating Bragg region has been realized. The proposed system allowed to measure pressure range of 400 psi with uncertain of 4 psi and simultaneously temperature range of 22 Celsius Degree with uncertain of 0.1 Celsius Degree. In addiction, generated effects in the temporal multiplexing (TDM) of fiber Bragg grating sensors when the sensor spectra are fully overlapped have been analyzed. In this study, it is compared the demodulation technique based on two fixed filters with the conventional technique based on the peak position. The results show that the technique based on fixed filters presents advantage to conventional, allowing a greatest sensor number. It was also analyzed the generated disturbance in the Bragg grating sensor spectrum when the source used to interrogate the sensor has a residual modulation which changes with the temperature. And finally, a polarized multiplexing system (TDM/WDM) able to interrogate a large number of Bragg grating sensors written in high-birefringent polarization-maintaining fibers has been realized. It is based on integrated-optic switch Mach- Zehnder interferometer in X-Y configuration and a CCD line array spectrometer.
Aceituno, Roberto. "Psychiatrie, psychanalyse, histoire : Eléments pour une discussion sur le discours psychiatrique et psychanalytique. Vers une interrogation critique sur l'actualité de leurs "limites"." Paris 7, 2000. http://www.theses.fr/2000PA070126.
Full textThe thesis discusses the discursive historicity of the psychiatric and psychoanalytic disciplines from two standpoints : the first, developed in the first section, refers to the history of psychiatry during the 19th century, from Pinel to Freud, and to the continuity/rupture introduced by psychoanalysis in that period. This section opens with a discussion on the options taken by Michel Foucault (History of madness in classic times) and by some of his critics (specifically, Gladys Swain and Marcel Gauchet) concerning the birth of modern psychiatry (Pinel). It is followed by an exposition on the "figures of altership" in the history of 19th century psychiatry, beginning in the problem of identity and difference. Both aspects are returned to at the end of this section in the discussion about the place of psychoanalytic clinical practice and theory as a discourse about the Subject and his historicity, as well as in a discussion of a status of speech in Freudian theory. In the second section, the "present" of psychiatric and psychoanalytic knowledge is analysed in its relation to the period described before. The place of "borderlines disorders" is analysed specifically, considered as an expression of both a disciplinary constancy and contemporary subjectivity in its social-cultural dimension. Specifically, the issue of the historicity of the subject in psychiatric and psychoanalytic clinical practice is returned to through a questioning of the views of American psychoanalysis - represented by O. Kernberg - and its counterpart in the Lacanian perspective on structure and history. The thesis ends with two concluding chapters on clinical practice as a contemporary discourse and the need of history in the present and future of psychoanalysis
Carrel, Frédérick. "Etude et développement d’une technique de dosage des actinides dans les colis de déchets radioactifs par interrogation photonique ou neutronique active et spectrométrie des gamma retardés." Caen, 2007. http://www.theses.fr/2007CAEN2022.
Full textAn accurate estimation of the alpha-activity of a nuclear waste package is necessary to select the best mode of storage. The main purpose of this work is to develop a non-destructive active method, based on the fission process and allowing the identification of actinides (235U, 238U, 239Pu). These three elements are the main alpha emitters contained inside a package. Our technique is based on the detection of delayed gammas emitted by fission products. These latter are created by irradiation with the help of a neutron or photon beam. Performances of this method have been investigated after an Active Photon or Neutron Interrogation (INA or IPA). Three main objectives were fixed in the framework of this thesis. First, we measured many yields of photofission products to compensate the lack of data in the literature. Then, we studied experimental performances of this method to identify a given actinide (239Pu in fission, 235U in photofission) present in an irradiated mixture. Finally, we assessed the application of this technique on different mock-up packages for both types of interrogation (118 l mock-up package containing EVA in fission, 220 l mock-up package with a wall of concrete in photofission)
Antoni, Rodolphe. "Optimisation des mesures d'interrogation neutronique active par couplage d'une méthode de correction des effets de matrice." Thesis, Grenoble, 2014. http://www.theses.fr/2014GRENY014.
Full textThe fissile mass in radioactive waste drums filled with compacted metallic residues (spent fuel hulls and nozzles) produced at AREVA La Hague reprocessing plant is measured by neutron interrogation with the Differential Die-away measurement Technique, on the waste compaction facility (ACC). In the future, old hulls and nozzles mixed with ion-exchange resins will be measured. The ion-exchange resins increase neutron moderation in the matrix, compared to the waste measured in the current process. In this context, a matrix effect correction method based on a drum monitor (3He proportional counter) has been studied. The feasibility of the method was first performed with the R&D measurement cell PROMETHEE 6, showing a good correlation between the monitor signal and the matrix effect correction, and the capability of MCNP simulations to reproduce experiments and to estimate the performances of the proposed correction. Therefore, the industrial implementation of the method and the assessment of its final performances have been studied by numerical simulation. Calculations demonstrate that the method allows keeping the highest error on the measured fissile mass below roughly a factor of 2, while the matrix effect without correction ranges on 2 orders of magnitude. In addition, the analysis of experimental data from the current process shows a good correlation between known physical properties of the matrix (moderation and absorption) and the monitor signal, demonstrating the reliability of the proposed approach. According to these satisfactory results, this correction method will be implemented on the industrial station. More generally, this method could be applied to similar waste measurement systems
Brady, Geoffrey Phillip. "Fibre Bragg grating sensors : interrogation and multiplexing techniques." Thesis, University of Kent, 1996. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.309781.
Full textWilson, Alan. "Interrogation techniques for short gauge length optical fibre sensors." Thesis, Cranfield University, 1998. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.266987.
Full textGuan, Yanlin. "Interactive and immersive surface interrogation techniques over triangulated surfaces." Diss., Mississippi State : Mississippi State University, 2003. http://library.msstate.edu/etd/show.asp?etd=etd-04142003-173417.
Full textHervás, Peralta Javier. "Design of photonic sensors based on cavities and new interrogation techniques." Doctoral thesis, Universitat Politècnica de València, 2019. http://hdl.handle.net/10251/119754.
Full text[CAT] Els sensors òptics son dispositius fotònics sensibles a determinades magnituds que s'usen precisament per a mesurar, ja siga de forma absoluta o relativa, aquestes magnituds. Mesurar la temperatura, la pressió, la tensió, la humitat o la presència d'un determinat gas són algunes de les funcionalitats que realitzen aquestos sensors. Al llarg de les últimes dècades multitud de sensors i tècniques d'interrogació han sigut desenvolupades, i això ha tingut un impacte increïble a multitud d'àrees. Un dels exemples més clar es l'arquitectura civil, on aquestos sensors juguen un paper fonamental en la monitoratge de l'estat de les estructures. Encara que els resultats aconseguits han sigut bons, les tècniques d'interrogació desenvolupades fins ara mostren alguns desavantatges. Temps de mesurament alt, baixa resolució o una gran complexitat són algun d'ells. A aquesta tesi doctoral es presenta el disseny i caracterització de diversos sensors fotònics basats en les ja conegudes xarxes de difracció de Bragg així com l'implementació de noves tècniques d'interrogació per a intentar eliminar o reduir aquestos inconvenients. Les tècniques d'interrogació desenvolupades en aquest treball es basen en la fotònica de microones, on l'interacció entre les senyals òptiques i elèctriques s'usa per a detectar en aquest cas els canvis en una determinada magnitud. Les tècniques desenvolupades en aquest treball busquen ser el més versàtils i escalables possibles per a poder adaptar-se als requeriments dels diferents escenaris. Trobem així tècniques que permeten interrogar milers de sensors amb una gran resolució i sensitivitat però també tècniques que permeten interrogar sensors puntuals amb una increïble sensitivitat mostrant una gran simplicitat en el seu disseny. També estan presents els resultats obtinguts mitjançant la col¿laboració amb l'institut d'investigació suec ACREO per al desenvolupament d'un sensor de camp eléctric basat en FBGs i en fibres polaritzades.
[EN] Optical sensors are photonic devices sensitive to different magnitudes that are used precisely to measure, in an absolute or a relative way, these magnitudes. These optical sensors are nowadays used to measure temperature, pressure, strain, humidity or the presence of a particular gas. In the past few decades a multitude of photonic sensors and different interrogation techniques have been developed, which had a great impact in dozens of different fields. One of the best examples is civil architecture, in which photonic sensors play a fundamental role in order to monitor the condition of the structures. Despite of the good results showed by photonic sensors, the interrogation techniques used show different drawbacks. A large measurement time, low resolution or great complexity are some of them. In this doctoral thesis the design and characterization of a set of different photonic sensors based on the already known fiber Bragg gratings, along with the implementation of new interrogation techniques, are used in order to eliminate or at least reduce these problems. The interrogation techniques developed in this work are based on Microwave Photonics techniques, in which the interaction between optical and electrical signals is used to detect in this case the changes in a particular magnitude. The techniques showed in this work have been designed in order to be as versatile and scalable as possible to have the opportunity to adapt to any requirement in different scenarios. In this work techniques that are able to interrogate hundreds or even thousands of sensors with great sensitivity and resolution can be found in addition to techniques that are developed to interrogate individual sensors with an enormous sensitivity. The work carried out in collaboration with the Swedish research institute ACREO, based on the development of an electric field sensor based on poled fibers together with FBGs is also present.
Hervás Peralta, J. (2019). Design of photonic sensors based on cavities and new interrogation techniques [Tesis doctoral no publicada]. Universitat Politècnica de València. https://doi.org/10.4995/Thesis/10251/119754
TESIS
Akbarinia, Reza. "Techniques d'accès aux données dans des systèmes pair-à-pair." Nantes, 2007. http://www.theses.fr/2007NANT2060.
Full textThe goal of this thesis is to contribute to the development of new data access techniques for query processing services in P2P environments. We focus on novel techniques for two important kinds of queries: queries with currency guarantees and top-k queries. To improve data availability, most P2P systems rely on data replication, but without currency guarantees. However, for many applications which could take advantage of a P2P system (e. G. Agenda management), the ability to get the current data is very important. To support these applications, the query processing service must be able to efficiently detect and retrieve a current, i. E. Up-to-date, replica in response to a user requesting a data. The second problem which we address is supporting top-k queries which are very useful in large scale P2P systems, e. G. They can reduce the network traffic significantly. However, efficient execution of these queries is very difficult in P2P systems because of their special characteristics, in particular in DHTs. In this thesis, we first survey the techniques which have been proposed for query processing in P2P systems. We give an overview of the existing P2P networks, and compare their properties from the perspective of query processing. Second, we propose a complete solution to the problem of current data retrieval in DHTs. We propose a service called Update Management Service (UMS) which deals with updating replicated data and efficient retrieval of current replicas based on timestamping. Third, we propose novel solutions for top-k query processing in structured, i. E. DHTs, and unstructured P2P systems. We also propose new algorithms for top-k query processing over sorted lists which is a general model for top-k queries in many centralized, distributed and P2P systems, especially in super-peer networks. We validated our solutions through a combination of implementation and simulation and the results show very good performance, in terms of communication and response time
Beyer, Bradford. "False Confessions from the Viewpoint of Federal Polygraph Examiners." ScholarWorks, 2016. https://scholarworks.waldenu.edu/dissertations/3085.
Full textRezgui, Yacine. "Intégration des systèmes d'informations techniques pour l'exploitation des ouvrages." Phd thesis, Ecole Nationale des Ponts et Chaussées, 1994. http://tel.archives-ouvertes.fr/tel-00523175.
Full textKouomou, Choupo Anicet. "Améliorer la recherche par similarité dans une grande base d'images fixes par des techniques de fouille de données." Rennes 1, 2006. https://tel.archives-ouvertes.fr/tel-00524418.
Full textBaker, Natasha Távora. "The Question of Torture in the Bush Administration's War on Terror." Thesis, Boston College, 2010. http://hdl.handle.net/2345/1347.
Full textThis thesis serves to clarify and concretize the controversy surrounding the debate on torture as it pertains to the War on Terror during the Bush Administration years. It argues that policy and rhetoric decisions made at the top of the political food chain contributed to the instances of abuse and torture that occurred in the various arenas of the war (i.e. Afghanistan, Iraq, Guantanamo, and CIA “black sites”). Such an argument is made through an analysis of what defines interrogation and torture, what techniques were in fact authorized, what factors went into determining which techniques to use, and what influence these techniques had on abuses that occurred. This thesis concludes with policy updates based on lessons learned and briefly addresses the efforts made by the Obama Administration in regards to torture, interrogation, and terrorism
Thesis (BA) — Boston College, 2010
Submitted to: Boston College. College of Arts and Sciences
Discipline: Political Science Honors Program
Discipline: College Honors Program
Discipline: Political Science Honors
Farooq, Omer. "The Effect of Elaborative Interrogation on the Synthesis of Ideas from Multiple Sources of Information." Kent State University / OhioLINK, 2018. http://rave.ohiolink.edu/etdc/view?acc_num=kent1523279186272151.
Full textGuarnieri, Ambra. "Interrogating cross-cultural dialogue : histories and techniques of representation in post-colonial literature (1954-2001)." Thesis, SOAS, University of London, 2017. http://eprints.soas.ac.uk/24960/.
Full textFaessel, Nicolas. "Indexation et interrogation de pages web décomposées en blocs visuels." Thesis, Aix-Marseille 3, 2011. http://www.theses.fr/2011AIX30014/document.
Full textThis thesis is about indexing and querying Web pages. We propose a new model called BlockWeb, based on the decomposition of Web pages into a hierarchy of visual blocks. This model takes in account the visual importance of each block as well as the permeability of block's content to their neighbor blocks on the page. Splitting up a page into blocks has several advantages in terms of indexing and querying. It allows to query the system with a finer granularity than the whole page: the most similar blocks to the query can be returned instead of the whole page. A page is modeled as a directed acyclic graph, the IP graph, where each node is associated with a block and is labeled by the coefficient of importance of this block and each arc is labeled by the coefficient of permeability of the target node content to the source node content. In order to build this graph from the bloc tree representation of a page, we propose a new language : XIML (acronym for XML Indexing Management Language), a rule based language like XSLT. The model has been assessed on two distinct dataset: finding the best entry point in a dataset of electronic newspaper articles, and images indexing and querying in a dataset drawn from web pages of the ImagEval 2006 campaign. We present the results of these experiments
Fankam, Nguemkam Chimène. "OntoDB2 : un système flexible et efficient de base de données à base ontologique pour le web sémantique et les données techniques." Chasseneuil-du-Poitou, Ecole nationale supérieure de mécanique et d'aéronautique, 2009. https://tel.archives-ouvertes.fr/tel-00452533.
Full textThe need to represent the semantics of data in various scientific fields (medicine, geography, engineering, etc…) has resulted in the definition of data referring to ontologies, also called ontology-based data. With the proliferation of domain ontologies, and the increasing volume of data to handle, has emerge the need to define systems capable of managing large size of ontology-based data. Such systems are called Ontology Based DataBase (OBDB) Management Systems. The main limitations of existing OBDB systems are (1) their rigidity, (2) lack of support for non standard data (spatial, temporal, etc…) and (3) their lack of effectiveness to manage large size data. In this thesis, we propose a new OBDB called OntoDB2, allowing (1) the support of ontologies based on different ontology models, (2) the extension of its model to meet specific applications requirements, and (3) an original management of ontology-based data facilitating scalability. Onto DB2 is based on the existence of a kernel ontology, and model-based techniques to enable a flexible extension of this kernel. We propose to represent only canonical data by transforming, under certain conditions, any given non-canonical data to its canonical representation. We propose to use the ontology query language to (1) to access non-canonical data thereby transform and, (2) index and pre-calculate the reasoning operations by using the mechanisms of the underlying DBMS
Manolescu, Goujot Ioana Gabriela. "Techniques d'optimisation pour l'interrogation des sources de données hétérogènes et distribuées." Versailles-St Quentin en Yvelines, 2001. http://www.theses.fr/2001VERS0027.
Full textPhilipsson, Anders. "Interrogative Clauses and Verb Morphology in L2 Swedish : Theoretical Interpretations of Grammatical Development and Effects of Different Elicitation Techniques." Doctoral thesis, Stockholm : Centre for Research on Bilingualism, Stockholm University, 2007. http://urn.kb.se/resolve?urn=urn:nbn:se:su:diva-6847.
Full textVoglozin, W. Amenel. "Le résumé linguistique de données structurées comme support pour l'interrogation." Phd thesis, Université de Nantes, 2007. http://tel.archives-ouvertes.fr/tel-00481049.
Full textDAUZET, LUCIEN. "La Formation technique en mécanique : 1975-1985 : interrogations complémentaires et contrastées sur les corrélations d'une formation professionnelle avec une culture générale et une correspondance à l'emploi." Lyon 2, 1989. http://www.theses.fr/1989LYO20055.
Full textComputerization of productive means in industries of the mechanics sector implies acquiring new qualifications by the workers. Such qualifications call upon a labour force whose training must permanently adjust to ever advancing technologies. Therefore the whole body of the teaching network, starting from initial training up to recurrent education, is questionned by training needs. Analyses conducted in a french technical school, and in various enterprises in japan and west germany provide for field observation. These are supported by an historical approach, itself widened conjoncturally by on the basis of unesco, ocde and the european council's recommandations and strategies on adult education
Stjärneblad, Sebastian. "Kriget mot terrorismen - Paradigmskifte av rättfärdiga metoder i modern krigföring?" Thesis, Malmö högskola, Fakulteten för kultur och samhälle (KS), 2013. http://urn.kb.se/resolve?urn=urn:nbn:se:mau:diva-21934.
Full textThe purpose of this study is to analytically review and examine the legal aspects arising in connection with the war on terrorism. The Bush-administration’s legal arguments on the practices indefinite detentions and enhanced interrogation techniques are in focus. By using a legal method it will be examined whether the arguments is consistent with international law to determine the practices legal status. Furthermore, it is ascertained thru this procedure whether the practices can achieve a legal codification internationally and in that way bring a paradigmatic shift of righteous methods in modern warfare. The legal analysis demonstrates that the practices are inconsistent with international law and in conflict with regulations in both humanitarian law and human rights. The conclusion is that the American legal reasoning regarding indefinite detentions and enhanced interrogation techniques cannot achieve any legal codification internationally and thus not bring any paradigmatic shift of righteous methods in modern warfare.
Delacroix, Quentin. "Un système pour la recherche plein texte et la consultation hypertexte de documents techniques." Clermont-Ferrand 2, 1999. http://www.theses.fr/1999CLF2A001.
Full textSilva, Junior Marco Aurélio Jucá da. "Interrogação de sensores a fibra óptica através de métodos computacionais." Universidade Federal de Juiz de Fora (UFJF), 2018. https://repositorio.ufjf.br/jspui/handle/ufjf/8002.
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Sensores a fibra óptica tornaram-se uma alternativa popular aos sensores eletrônicos tradicionais devido às suas inúmeras vantagens. Um desafio importante no emprego de sensores ópticos é a interrogação do sensor, isto é, recuperar o valor da medição a partir da saída do sensor. Este trabalho visa a apresentar uma forma simples e eficaz de interrogar um sensor baseado em grade de Bragg em fibra (FBG) utilizando filtros ópticos e métodos computacionais convenientes. Como exemplo, foi escolhido um sensor de temperatura, embora o sistema de interrogação possa lidar com qualquer medição, sendo calibrado adequadamente. Esse sistema de interrogação é capaz de fornecer o valor preciso da temperatura sem medir diretamente o deslocamento do comprimento de onda de ressonância ou realizar qualquer cálculo de Fourier. Os métodos foram implementados e o treinamento realizado utilizando dados simulados. Resultados de simulação são apresentados e comparados a um método tradicional de interrogação. O sistema proposto neste trabalho mostrou um desempenho excelente ao identificar a temperatura a partir da saída do sensor e mostrou maior precisão em relação ao método tradicional apresentado.
Optical fiber sensors have become a popular alternative to traditional electronic sensors due to their numerous advantages. An important challenge in deploying optical sensors is the interrogation of the sensor, that is, recovering the measurement value from the sensor output. This work aims to present a simple yet effective way of interrogating a fiber Bragg grating (FBG) sensor using optical filters and suitable computational methods. As an example, a temperature sensor was analyzed, although the interrogation system is able to deal with any measurement, by calibrating it suitably. This interrogation system is capable of giving the precise temperature value without directly measuring the resonance wavelength shift or performing any Fourier calculations. The methods were implemented and the training was accomplished using simulated data. Simulation results are presented and compared to a traditional method of interrogation. The system proposed in this work showed excellent performance in identifying the temperature from the sensor output and showed higher precision than the traditional method presented.
Dupuis, Arnaud. "Intégration et pondération d'indices visuels : application à la segmentation, au groupement et à la recherche d'images." Compiègne, 2004. http://www.theses.fr/2004COMP1516.
Full textThe purpose of the work presented in this thesis is to study an automated multimedia image segmentation system with a view to image retrieval. Thus, in a first time, we have studied the main segmentation algorithms available in the literature. This study led us to analyze the problems related to the multiplication of information useful for segmentation. Thus, the design of the multimedia image segmentation algorithm requires introducing much information such as colours, textures, contours, etc. However, this information presents different discriminating aspects depending on the image. Then, in a second time, we have studied some methods of information combination, likely to answer these problems. Then, we proposed an iterative system of visual cue combination based on a principal components analysis, the latter using a set of inter-region affinity matrices as initial data. Many tests enabled us to check the adaptation and selection capacities of our system depending on the image. So, to access our segmentation method, we have compared it with other algorithms by using the BCE error measure making it possible to compare the results provided automatically with human segmentations. To finish, the last part of this work, proposes to use the result of segmentation as a specific signature to each image which we integrate in an image retrieval system. This algorithm uses a principle similar to the one employed for segmentation to select and weight the relevant information. The tests carried out made it possible to have encouraging results
Camacho, Rodriguez Jesus. "Efficient techniques for large-scale Web data management." Thesis, Paris 11, 2014. http://www.theses.fr/2014PA112229/document.
Full textThe recent development of commercial cloud computing environments has strongly impacted research and development in distributed software platforms. Cloud providers offer a distributed, shared-nothing infrastructure, that may be used for data storage and processing.In parallel with the development of cloud platforms, programming models that seamlessly parallelize the execution of data-intensive tasks over large clusters of commodity machines have received significant attention, starting with the MapReduce model very well known by now, and continuing through other novel and more expressive frameworks. As these models are increasingly used to express analytical-style data processing tasks, the need for higher-level languages that ease the burden of writing complex queries for these systems arises.This thesis investigates the efficient management of Web data on large-scale infrastructures. In particular, we study the performance and cost of exploiting cloud services to build Web data warehouses, and the parallelization and optimization of query languages that are tailored towards querying Web data declaratively.First, we present AMADA, an architecture for warehousing large-scale Web data in commercial cloud platforms. AMADA operates in a Software as a Service (SaaS) approach, allowing users to upload, store, and query large volumes of Web data. Since cloud users support monetary costs directly connected to their consumption of resources, our focus is not only on query performance from an execution time perspective, but also on the monetary costs associated to this processing. In particular, we study the applicability of several content indexing strategies, and show that they lead not only to reducing query evaluation time, but also, importantly, to reducing the monetary costs associated with the exploitation of the cloud-based warehouse.Second, we consider the efficient parallelization of the execution of complex queries over XML documents, implemented within our system PAXQuery. We provide novel algorithms showing how to translate such queries into plans expressed in the PArallelization ConTracts (PACT) programming model. These plans are then optimized and executed in parallel by the Stratosphere system. We demonstrate the efficiency and scalability of our approach through experiments on hundreds of GB of XML data.Finally, we present a novel approach for identifying and reusing common subexpressions occurring in Pig Latin scripts. In particular, we lay the foundation of our reuse-based algorithms by formalizing the semantics of the Pig Latin query language with extended nested relational algebra for bags. Our algorithm, named PigReuse, operates on the algebraic representations of Pig Latin scripts, identifies subexpression merging opportunities, selects the best ones to execute based on a cost function, and merges other equivalent expressions to share its result. We bring several extensions to the algorithm to improve its performance. Our experiment results demonstrate the efficiency and effectiveness of our reuse-based algorithms and optimization strategies
Hernell, Maria, Lovisa Mettou, and Josefin Olsson. "Tala är silver, tiga är guld : Om målsägande flickors utrymme och möjlighet till fritt berättande i förhör om misstänkta sexuella brott. En jämförelsestudie av förhörsledares språk ur ett genusperspektiv." Thesis, Örebro University, School of Law, Psychology and Social Work, 2010. http://urn.kb.se/resolve?urn=urn:nbn:se:oru:diva-10885.
Full textThe purpose of this study is to analyze the interrogation transcripts of interviews with girls between the age of 11 and 16 who are alleged victims of sexual crimes. The examination is done from a gender perspective, by comparing six interrogations by male interrogators and eight interrogations by female interrogators. The study has used linguistic indicators relating to the interrogation methodological guidelines, in order to highlight how the interrogators give girls the opportunity and space to share their experience of the alleged sexual offense. Text material is categorized based on themes and analyzed in detail to find any gender-specific patterns of hearing leaders and if the girls are given space and opportunity for a free storytelling. The results show that in several themes, differences between the male and the female interrogators can be discerned. It has emerged that male interrogators in this study have a greater use of social support, that there are various techniques used by men and women between how the names of sexual words are created and that the female interrogation leaders questioning on average are longer and have a higher frequency of issues. In other dimensions, that has been investigated the differences are not significant.
Prevost, Raphaël. "Méthodes variationnelles pour la segmentation d'images à partir de modèles : applications en imagerie médicale." Phd thesis, Université Paris Dauphine - Paris IX, 2013. http://tel.archives-ouvertes.fr/tel-00932995.
Full textRaye, Julie Knowles. "An electromagnetic interrogation technique utilizing pressure-dependent polarization." 2002. http://www.lib.ncsu.edu/theses/available/etd-05242002-121956/unrestricted/etd.pdf.
Full textKotek, Tomáš. "Taktika výslechu." Master's thesis, 2018. http://www.nusl.cz/ntk/nusl-389091.
Full textRahimi, Somayyeh. "Free Spectral Range Matched Interrogation Technique for Wavelength Demodulation of Fiber Bragg Grating Sensors." Thesis, 2009. http://hdl.handle.net/10012/4232.
Full textCarvalho, Joel Pedro Peixoto de. "Optical sensing: fiber structures and interrogation techniques." Tese, 2013. https://repositorio-aberto.up.pt/handle/10216/71707.
Full textCarvalho, Joel Pedro Peixoto de. "Optical sensing: fiber structures and interrogation techniques." Doctoral thesis, 2013. https://repositorio-aberto.up.pt/handle/10216/71707.
Full textGibson, Nathan Louis. "Terahertz-based electromagnetic interrogation techniques for damage detection." 2004. http://www.lib.ncsu.edu/theses/available/etd-06232004-175831/unrestricted/etd.pdf.
Full textBrousilová, Klára. "Sugestibilita dětských svědků v rámci trestního řízení z pohledu psychologie." Master's thesis, 2019. http://www.nusl.cz/ntk/nusl-393583.
Full textKUAN, CHIA-YING, and 官家瑩. "A Study of Techniques and Limits in the Interrogation of Suspects - Focused on Police Practices." Thesis, 2019. http://ndltd.ncl.edu.tw/handle/dr7y5a.
Full text中央警察大學
刑事警察研究所
107
Articles 98 and 156 of Taiwan’s Code of Criminal Procedure forbid the use of illegitimate interrogation means to secure confession. Confession obtained by aforementioned means cannot accepted as sufficient evidence. Nowadays it is rare for investigators to initiate investigation with physical force such as torture; however, the “interrogation techniques” used in practice may constitute inducement, fraud or other improper means and put investigators at risk of violation of the laws. Some studies show that the current domestic interrogation practice is similar to the Reid Technique widely used in the United States. This paper attempts to evaluate the similarities and differences between two techniques, analyze the frequently used interrogation methods according to the domestic interrogatory records, thus expose the problems of current interrogation works in Taiwan. The finding in this study is that the improved model for police interrogation which advised by National Conference on Judicial Reform still requires the integration of practical operation and training. By connecting theory and practice, a systematized interrogation model exclusive to Taiwan may be established.
Regmi, Raju. "Light Sheet Based Microfluidic Flow Cytometry Techniques for High throughput Interrogation and High-resolution Imaging." Thesis, 2014. http://hdl.handle.net/2005/3108.
Full textKostelníková, Zuzana. "Psychologické aspekty vyslýchání dětí v rámci trestního řízení." Master's thesis, 2015. http://www.nusl.cz/ntk/nusl-350808.
Full textRodriguez, Lopez Joaquin 1983. "The use of scanning electrochemical microscopy for the detection and quantification of adsorbed intermediates at electrodes." Thesis, 2010. http://hdl.handle.net/2152/ETD-UT-2010-08-1717.
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Fankam, Chimène. "OntoDB2 : un système flexible et efficient de base de données à base ontologique pour le web sémantique et les données techniques." Phd thesis, 2009. http://tel.archives-ouvertes.fr/tel-00452533.
Full textManyarara, Barbara Chiedza. "Lost his voice? interrogating the representations of sexualities in selected novels by Gabriel Garcia Marquez." Thesis, 2013. http://hdl.handle.net/10500/18672.
Full textEnglish Studies
D. Litt. et Phil. (English)