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1
Withall, Caroline Louise. "Shipped out? : pauper apprentices of port towns during the Industrial Revolution, 1750-1870". Thesis, University of Oxford, 2014. http://ora.ox.ac.uk/objects/uuid:519153d8-336b-4dac-bf37-4d6388002214.
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The thesis challenges popular generalisations about the trades, occupations and locations to which pauper apprentices were consigned, shining the spotlight away from the familiar narrative of factory children, onto the fate of their destitute peers in port towns. A comparative investigation of Liverpool, Bristol and Southampton, it adopts a deliberately broad definition of the term pauper apprenticeship in its multi-sourced approach, using 1710 Poor Law and charity apprenticeship records and previously unexamined New Poor Law and charity correspondence to provide new insight into the chronology, mechanisms and experience of pauper apprenticeship. Not all port children were shipped out. Significantly more children than has hitherto been acknowledged were placed in traditional occupations, the dominant form of apprenticeship for port children. The survival and entrenchment of this type of work is striking, as are the locations in which children were placed; nearly half of those bound to traditional trades remained within the vicinity of the port. The thesis also sheds new light on a largely overlooked aspect of pauper apprenticeship, the binding of boys into the Merchant service. Furthermore, the availability of sea apprenticeships as well as traditional placements caused some children to be shipped in to the ports for apprenticeships. Of those who were still shipped out to the factories, the evidence shows that far from dying out, as previously thought, the practice of batch apprenticeship persisted under the New Poor Law. The most significant finding of the thesis is the survival and endurance of pauper apprenticeship as an institution involving both Poor Law and charity children. Poor children were still being apprenticed late into the third quarter of the nineteenth century. Pauper apprenticeship is shown to have been a robust, resilient and resurgent institution. The evidence from port towns offers significant revision to the existing historiography of pauper apprenticeship.
2
Ball, Cory BH. "The Apprentices' Tower of Hanoi". Digital Commons @ East Tennessee State University, 2015. https://dc.etsu.edu/etd/2512.
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The Apprentices' Tower of Hanoi is introduced in this thesis. Several bounds are found in regards to optimal algorithms which solve the puzzle. Graph theoretic properties of the associated state graphs are explored. A brief summary of other Tower of Hanoi variants is also presented.
3
Wood, Anthony. "Mentoring apprentices training Memphis Urban Ministry field supervisors /". Theological Research Exchange Network (TREN), 2002. http://www.tren.com.
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Caron, Jean-François. "Les apprentis à Québec de 1830 à 1849". Master's thesis, Université Laval, 1985. http://hdl.handle.net/20.500.11794/29110.
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Richards, Glenn. "A study of the recruitment of engineering apprentices in Coventry". Thesis, University of Warwick, 1988. http://wrap.warwick.ac.uk/4319/.
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This thesis conceptually, theoretically and empirically examines the needs of industry through a study of the recruitment of engineering apprentices in 107 firms. In recruitment employers are forced to consider what they look for in applicants - to concretely define their needs. The conceptual argument is that the needs that the concept 'needs of industry' refers to are labour power needs, but that the notion of needs in relation to labour power is incoherent. First, these needs cannot be specified in relation to the quality of labour power attributes to be socially produced or assessed in recruitment. Secondly, employers' statements of their needs are predicated on contradictions between aspects of labour power. For employers' needs to be met these contradictions require resolution, but there can be no ideal workers whose labour power is free of inherent contradictions. The theoretical argument starts from the question of why researchers and commentators have stressed that employers' statements of their needs are confused or contradictory. It is argued that contradictions in these statements reflect contradictions within labour power. The empirical argument starts from showing that engineering employers are not confused or contradictory in relation to the attributes sought in apprenticeship applicants. Furthermore, the relation between attributes sought in applicants and recruitment methods is generally consistent. Yet when attributes sought, other recruitment criteria (especially sex and race) and recruitment methods are scrutinised through the lens of recruitment channels - then the recruitment process becomes anarchic, as employers favour some applicants (sons of employees, owners and managers and clients/customers) and discriminate against others (especially female applicants) in relative disregard of the priorities established in their statements of attributes sought in applicants. The anarchy of the recruitment process rests on employers' social power, their power to discriminate, differentiate and give favour to applicants.
6
Beach, Jeremy R. "An epidemiological investigation of asthma in shipyard workers and apprentices". Thesis, University of Newcastle Upon Tyne, 1996. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.318177.
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Krull, Kari L. "Analysis of impact of youth apprenticeship programs on students enrolled in Manitowoc County Youth Apprenticeship Programs". Online version, 2009. http://www.uwstout.edu/lib/thesis/2009/2009krullk.pdf.
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Skirvin, Jerry D. "Benefits of teaching basic computer literacy skills to Naval Engineering Apprentices /". Available to subscribers only, 2007. http://proquest.umi.com/pqdweb?did=1402175801&sid=1&Fmt=2&clientId=1509&RQT=309&VName=PQD.
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Rharade, Abdelhag. "Itinéraires socio-éducatifs des apprentis dans les ateliers de production de biens et de services à Nairobi". Paris 1, 1999. http://www.theses.fr/1999PA010545.
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Au cours de cette thèse nous avons cherché à porter un regard critique sur les systèmes d'éducation et de formation au Kenya, à étudier les modes d'accès à l'apprentissage et à analyser les processus d'intégration professionnelle. Cette recherche nous a permis de fournir les propriétés sociales des individus, d'illustrer la représentation de leur parcours et de rendre compréhensible leur rapport à l'apprentissage en fonction du cadre de référence défini par un système de contraintes qui résulte des dysfonctions de l'éducation scolaire associées aux problèmes d'insertion professionnelle des jeunes sans qualifications. La reconstitution des étapes menant aux activités de production de biens et de service, appelés Jua Kali à Nairobi, révèle la forte dépendance des jeunes envers leur milieu d'appartenance. Les entretiens ont permis de mettre en relief des logiques d'action plus ou moins stables, en continuité ou en rupture par rapport aux facteurs déterminants et aux étapes marquantes des itinéraires des apprentis. Ces logiques rendent compte du procès de socialisation, selon le degré d'acceptation ou de refus soit de l'activité soit du milieu Jua Kali, et montrent que l'entrée en apprentissage n'est pas toujours un choix mais résulte d'un ensemble de contraintes socioéconomiques. Cela traduit en même temps les possibilités d'avenir en fonction de la représentation de soi et des projets envisages par les jeunes. Pendant qu'ils acquièrent des qualifications techniques et participent à la production, les jeunes anticipent leur avenir en intériorisant les références symboliques du statut d'artisan indépendant. Atteindre ce statut confère une reconnaissance sociale valorisante aux yeux des petits producteurs qui revendiquent l'identité Jua Kali à travers la symbolique de l'indépendance. Les individus intériorisent le modèle de l'artisan indépendant en raison des incertitudes du marché du travail ou pour marquer leur autonomie à l'égard du milieu d'appartenance.
10
Emms, Simone Maria. "The modern journeyman influences and controls of apprentice style learning in culinary education : a thesis submitted in partial fulfilment of the requirements for degree of Master of Education, Auckland University of Technology, 2005". Full thesis. Abstract, 2005.
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Scarcella, Joseph A. "Plastering competencies identified as important for 21st century contractors : a rotational delphi /". free to MU campus, to others for purchase, 1997. http://wwwlib.umi.com/cr/mo/fullcit?p9841180.
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Sandy, Kirsti A. Hesse Douglas Dean. "Learning by co-teaching mentors and apprentices in an intensive introductory writing class /". Normal, Ill. Illinois State University, 1999. http://wwwlib.umi.com/cr/ilstu/fullcit?p9960424.
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Thesis (Ph. D.)--Illinois State University, 1999.Title from title page screen, viewed July 28, 2006. Dissertation Committee: Douglas Hesse (chair), Janice Neuleib, Kenneth Lindblom. Includes bibliographical references (leaves 237-245) and abstract. Also available in print.
13
Karl, Ralph. "Perceptions of youth apprentices who transitioned from Fox Valley Technical College to UW-Stout". Menomonie, WI : University of Wisconsin--Stout, 2006. http://www.uwstout.edu/lib/thesis/2006/2006karlr.pdf.
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Griffith, John Clark. "The Effect of Study Skills Training Intervention on United States Air Force Aeromedical Apprentices". Thesis, University of North Texas, 1998. https://digital.library.unt.edu/ark:/67531/metadc278161/.
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The study examined the effects of a study skills training intervention course on U.S. Air Force Aeromedical Apprentices with five main purposes. The first was to examine the relationship between study skills training and the number of times students required academic interventions outside of normal class time. The second purpose was to examine the relationship between study skills training and end of course averages. The third was to determine the relationship between study skills training and the amount of additional instruction, measured in time, students required. The fourth purpose examined the relationship between study skills training and graduation rates. The final purpose was to recommend areas for further research.
15
Deis, David Allen. "The schizophrenic condition". Thesis, Georgia Institute of Technology, 1989. http://hdl.handle.net/1853/22376.
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Veldman, Jeroen. "The corporate condition". Thesis, University of Leicester, 2011. http://hdl.handle.net/2381/9309.
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In this dissertation I aim to establish that the contemporary theory of incorporation rests on incoherent assumptions. Using a historical approach, I distinguish three different historical discursive formations underlying the contemporary concept of incorporation. On the basis of a comparison of these three historical discursive formations I argue that the contemporary representation of incorporation is a result of the simultaneous use of these three formations, while the last discursive formation has become dominant. This leads to a description of two problems of justification. The first problem is that in the contemporary theory of incorporation the three historical discursive formations, with their mutually exclusive assumptions, are all maintained in order to retain their practical effects. The second problem is that the assumptions underlying the third discursive formation are dominant, although this discursive formation employs a theory of representation that rejects the fundamental assumptions of the previous discursive formations. Together, these two problems lead to a contemporary theory of incorporation that relates to three historical discursive formations for their effects, but relates incoherently and inconsistently to the historical justifications for these effects. I will argue that, as a result of this incoherence and inconsistency, the contemporary theory of incorporation introduces a singular reified representation, which leads to a reconceptualization of the basic concept of representation in the legal, economic, social and political systems of representations. Then, I will argue that this reconceptualization strongly favours incorporated reified singular legal representations over the legal, economic and political representation of natural persons. On this basis, I will conclude that the contemporary theory of incorporation leads to legal, economic, social and political theory that is based on fundamentally unequal types of representation with structural unequal attributions of agency, ownership and rights.
17
Thumu, Prashanth. "TIME CONDITION SYSTEMS". UKnowledge, 2005. http://uknowledge.uky.edu/gradschool_theses/374.
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The current thesis considers the issue of state estimation of condition systems, a form of petri net with signal inputs and outputs. In previous research the problem of unobservability due to progress confusion was identified, in the presence of which state estimation is not possible. Here we introduce the notion of Time Condition Systems", a class of condition systems that uses timing information from condition models to overcome state estimation problem caused by progress confusion. To make use of the timing information in the plant model, a procedure called Exploded Time Plant" is synthesized. This procedure makes the plant model an observable model. It is proved that this procedure does not alter the structural and temporal behavior of the plant model and the plant maintains its integrity. The time plant(s) and the corresponding Exploded time plant(s) are subsequently used to develop observer(s) and controller(s) for Time condition models.
18
Samouhos, Stephen V. (Stephen Vincent) 1982. "Building condition monitoring". Thesis, Massachusetts Institute of Technology, 2010. http://hdl.handle.net/1721.1/61611.
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Thesis (Ph. D.)--Massachusetts Institute of Technology, Dept. of Mechanical Engineering, 2010.Cataloged from PDF version of thesis.
Includes bibliographical references (p. 201-206).
The building sector of the United States currently consumes over 40% of the United States primary energy supply. Estimates suggest that between 5 and 30% of any building's annual energy consumption is unknowingly wasted due to pathologically malfunctioning lighting and comfort conditioning systems. This thesis is focused on developing analytical methods embodied within useful software tools to quickly identify and evaluate those building system faults that cause large building energy inefficiencies. The technical contributions of this work include expert rules that adapt to HVAC equipment scale and operation, a general framework for applying probabilistic inference to HVAC fault detection and evaluation, and methods for sorting fault signals according to userdefined interests such as annual cost of energy inefficiencies. These contributions are particularly unique in their treatment of model and measurement uncertainty within the fault inference, and the careful consideration of user interests in fault evaluation. As a first step to developing this general framework for fault detection, I targeted first order faults such as simultaneous heating and cooling and imbalanced air flows within several large air-handling units in three buildings on the MIT campus. Experiments included the purposeful implementation of mechanical and software control programming faults on otherwise fault-free equipment. Between the five pieces of equipment, the software system successfully identified all previously known and experimentally implemented faults, as well as additional faults that had not been previously identified or imposed during the experiment. User testing and experiments show that embracing uncertainty within HVAC fault detection and evaluation is not only paramount to judicious fault inference but it is also central to gaining the trust and buy-in of system users who ultimately can apply fault detection information to actually fix and improve building operations.
by Stephen Samouhos.
Ph.D.
19
Wilmot-Smith, Frederick J. "Failure of condition". Thesis, University of Oxford, 2013. http://ora.ox.ac.uk/objects/uuid:93ab182a-be71-489a-88e8-1479d9b8efb3.
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This thesis is an investigation of a doctrine generally known as ‘failure of consideration’, but which I term ‘failure of condition’. I have two principal aims. First, to clarify quite what the doctrine of failure of condition is. Secondly, to explain why it has the effects it does – in particular, why it justifies the response of restitution. The doctrine, at core, concerns conditional transfers: when a transfer is made conditionally, and the condition fails, the transfer can be recovered. For this reason, I term the doctrine ‘failure of condition.’ I investigate the nature of this relationship and argue that the reason why the transfer is conditional is that the agent’s intention to make the transfer was itself conditional. The justification of restitution is a more complex affair than is customarily accepted – but there is a valid justification lurking not far from the surface of orthodoxy. A secondary concern of the thesis is to re-examine an old theory in the field of common mistake, frustration and termination following a breach of contract. It used to be thought that these doctrines could be explained by failure of condition. That theory has fallen out of favour – it seems that no one accepts it today. This rejection rests upon a confusion over the nature of the doctrine of failure of condition. Once the nature of this doctrine has been clarified, we can see how closely the various doctrines align with one another; we can also see where the true difficulty with the failure of condition explanation lies.
20
Richards, Debra L. "Recruitment and retention of women in the steamfitter/refrigeration apprenticeships of Madison and southeastern Wisconsin". Online version, 2008. http://www.uwstout.edu/lib/thesis/2008/2008richardsd.pdf.
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Danielson, Hugo, i Schmuck Benjamin von. "Robot Condition Monitoring : A first step in Condition Monitoring for robotic applications". Thesis, Luleå tekniska universitet, Institutionen för teknikvetenskap och matematik, 2017. http://urn.kb.se/resolve?urn=urn:nbn:se:ltu:diva-66011.
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The industrial world is in constant demand for faster, cheaper and higher quality manufacturing. Robot utilisation and automation has evolved to become a necessary asset to master in order to stay competitive in the global market. With the growing dependency on robots, unexpected downtime and brakedowns can cause devastating loss of revenue. Consequently, this has lead to an increased importance for an accurate condition based way of performing robotic maintenance. As of writing, robots are predominantly maintained through time dependent maintenance. Part replacement is based on statistical models where maintenance is performed without taking the actual robot condition into consideration. As a result an overall level of uncertainty is ensued, where lacking the ability to properly diagnose the robot, also leads to superfluous repairs. Because of the costly impact this has on production, a condition based maintenance approach to robots would yield increased reliability at a lower cost of maintenance. This research focuses on trying to monitor vibrations in a robot, so as to infer about wear and to provide a first step in vibration based Robot Condition Monitoring. This research has been of multidisciplinary nature where robotics, tribology, mechanical component, signal analysis and diagnosis theory have overlapped in several areas throughout the project. The research has provided a vibration baseline and trends of the theoretical bearing defect frequencies for a hypocycloid gearbox installed on an ABB IRB6600 robot. The gearbox was not worn to a level that a severe gearbox degradation was irrefutably detectable and analysable. Accelerometers normally used on wind turbines were used for the project, and are believed to be sufficiently successful in capturing bearing related signals to accredit it for continued use at the preliminary stages of Robot Condition Monitoring development. A worn RV410F hypocycloid gearbox, was dismantled and analysed. Bearings found inside indicate high degrees of moisture corrosion and extensive surface wear. These findings had decisive roles in what future work recommendations where presented. Areas with great potential are condition monitoring through the use of Acoustic Emission and lubrication analysis. Further recommendations include investigating signal analysis techniques such as cepstrum pre-whitening and discrete wavelet transforms.
22
Ashley, Jeffrey. "DIAGNOSIS OF CONDITION SYSTEMS". UKnowledge, 2004. http://uknowledge.uky.edu/gradschool_diss/341.
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In this dissertation, we explore the problem of fault detection and fault diagnosis for systems modeled as condition systems. A condition system is a Petri net based framework of components which interact with each other and the external environment through the use of condition signals. First, a system FAULT is defined as an observed behavior which does not correspond to any expected behavior, where the expected behavior is defined through condition system models. A DETECTION is the determination that the system is not behaving as expected according to the model of the system. A DIAGNOSIS of this fault localizes the subsystem that is the source of the discrepancy between output and expected observations. We characterize faults as a behavior relaxation of model components. We then show that detection and diagnosis can be determined in a finite number of calculations. The exact solution can be computationally involved, so we also present methods to perform a rapid detection and diagnosis. We have also included a chapter on a conversion from the condition system framework into a linear-time temporal logic(LTL) framework.
23
Blakeley, Bruce. "Audio plant condition monitoring". Thesis, Swansea University, 2001. https://cronfa.swan.ac.uk/Record/cronfa42239.
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Accelerometers are widely used in plant condition monitoring (PCM) to diagnose faults in rotating machinery. This can be expensive, and is typically only used to monitor the condition of critical machines. The objective of this project is to develop a system, using microphones, that could screen less critical machines for faults. Microphones are non-contact sensors that can be placed away from the machines, to avoid damage. If the data gathered by the microphone is reduced to a single parameter, that increases with wear, then analysis would be greatly simplified. This system could be used to provide basic PCM screening for equipment not considered important enough for routine vibration monitoring. To achieve this objective, a test-rig was designed and constructed, consisting of a motor, gearbox and load. Various faults were introduced into the test-rig, and a microphone used to record the sound. These results were then compared to accelerometer readings. Time synchronous averaging (TSA) was employed to increase the signal to noise ratio. It was proven that Kurtosis and crestfactor of a microphone signal both increase, if used with a high pass filter, when an impacting fault such as a broken gearbox tooth was introduced into the test-rig. It proved harder to reduce the sound of other non-impacting faults, such as misalignment, into a single parameter. The technique was tested in an industrial environment with a 100 dB background noise level. It was shown that the technique was capable of detecting faults even with a signal to noise ratio of -15 dB. A one dimensional FEA model was created, with six degrees of freedom, modelling the test-rig's vibrational behaviour. This was used to investigate the affect of a broken tooth, and to explain the increase in noise as the tooth passing frequency coincided with a resonance.
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Nyer-Malbet, Angèle. "Migration et condition sanitaire". Paris 5, 1994. http://www.theses.fr/1994PA05H055.
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On peut explorer le parcours migratoire à travers le fait sanitaire inscrit au premier plan des préoccupations contemporaines collectives ou individuelles. Sa visibilité socio-culturelle ou physique confère au migrant une place ambiguë. Sa condition sanitaire le définit et permet de tester la société d'accueil. Le premier titre de notre travail précise les terminologies employées: condition sanitaire, processus migratoire, migritude, organisation sanitaire. Le second donne la position du migrant: nombre, statut juridico-administratif ne sont pas neutres. La troisième étudie les dispositions du migrant, compte tenu des paramètres: activités, sexe, Age, mode de vie, difficultés a se loyer, pratiques "consommatoires". Ainsi se tissent les éléments de sa condition sanitaire qui, jour après jour le démarquent de l'autochtone, en particulier au sujet du travail, du statut féminin, du devenir des "jeunes" et des "vieux". Le dernier titre fait un inventaire du "versus pathologique" au sens de l'opposition binaire entre "mal être et "bien-être", les versants de la condition sanitaire, dans une optique comparative allogène-indigène. Ainsi, le processus d'acculturation réciproque, véritable mixage, inéluctable en l'état des lieux constaté suscite-t-il bien des heurts. Le "creuset français" ne fonctionnerait-il plus?His socio-cultural or physical visibility confers on the migrant an ambiguous position. His sanitary condition definies his and allow a test of the host society. The first part of our work definies the terms: sanitary condition, migratory process," migritude" and migrant: number and juridical-administrative status are not neutral. The third part considered his dispositions, taking account of the parameters: activity, sex, way of life, difficulties in lodging, consummatory practices. Thus day by day, the elements of his sanitary condition are woven together, marking out the migrant from the native particulary in regard to work, the status of women, and the futur of the "young" and "old". The last part inventories the pathological aspects in the sense of the binary opposition between ill health and well-being, the sides of the sanitary condition from comparative perspectives of the natives and the migrants. So, the processes of receprocal acculturation, a real, inescapable mixing in the area of study, give tise to many conflicts. Does the French "melting pot" continues to function?
25
Shen, Chia-Hsuan. "Acoustic Based Condition Monitoring". University of Akron / OhioLINK, 2012. http://rave.ohiolink.edu/etdc/view?acc_num=akron1341797408.
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Peters, Cheryl Elizabeth. "Early changes in respiratory health in young apprentices and physician utilization for asthma and bronchitis later in life". Thesis, University of British Columbia, 2007. http://hdl.handle.net/2429/32226.
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Introduction: The main risk factors for the development of respiratory disease have
been largely established, however we still cannot predict which individuals will develop
respiratory morbidity later in life. This study had two main goals: 1) to examine early
working-life changes in respiratory health as risk factors for the development of asthma
and bronchitis, and 2) to assess the utility of healthcare utilization data for longitudinal
studies in respiratory epidemiology.
Methods: A cohort of young apprentices at entry to their trade (machining,
construction painting, insulating, and electrician) was enumerated in 1988 to study
prospectively the natural history of respiratory morbidity. This group (n=356) was
followed-up again two years later. Subjects were linked to a provincial database of all
healthcare encounters from 1991 to 2004 (linkage rate 98%). Two health outcomes
were studied using physician diagnosis codes: asthma and "bronchitis". Demographics,
smoking, spirometric variables, and respiratory symptoms were assessed as predictors
of both becoming a respiratory case (logistic regression), and of physician visit rate
(negative binomial regression) during the administrative follow-up.
Results: There were 281 subjects available for analysis (complete data from baseline,
first follow-up, administrative data). Sixteen met the case definition for asthma (2
physician visits in 1 year), and 20 met the case definition for "bronchitis" (3 visits in 1
year). Baseline bronchial responsiveness (BR), and especially a rapid increase in BR
over the first 2 years was a strong risk factor for both asthma and "bronchitis". Baseline
symptoms of chronic cough or phlegm were predictive of subsequent "bronchitis" visits,
and incident asthma-like symptoms were strongly related to subsequent asthma visits.
Lung function variables were not important in any models. Relationships were also
detected between type of physician, age, sex, job title, size of town, smoking status and
the type of respiratory diagnostic code assigned at each physician visit.
Conclusions: Early changes in respiratory health may be useful markers in a
surveillance program of workers who are susceptible to subsequent obstructive lung
disease. Health care utilization data is a unique and promising tool in respiratory
epidemiology.Medicine, Faculty of
Population and Public Health (SPPH), School of
Graduate
27
Lagnebäck, Robert. "Evaluation of wayside condition monitoring technologies for condition-based maintenance of railway vehicles". Licentiate thesis, Luleå tekniska universitet, Drift, underhåll och akustik, 2007. http://urn.kb.se/resolve?urn=urn:nbn:se:ltu:diva-18158.
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Luossavaara-Kiirunavaara AB (LKAB) is an iron ore mining company in Sweden that strives to be one of the leading suppliers of iron ore products. In the chain from mining to end customers, transportation efficiency plays a mayor role in the outcome of the company's total financial result. The transportation of the ore from the LKAB mines in Kiruna and Malmberget is made by trains to the harbors in Narvik and Luleå. The railway transportations are made by LKAB subsidiaries Malmtrafik i Kiruna AB (MTAB) on the Swedish side and Malmtrafikk AS (MTAS) on the Norwegian side. The efficiency of the railway transportation is therefore a key function in the LKAB mining operations. In a benchmarking, comparing the total operating efficiency, with other heavy haul railways around the world it became evident that the efficiency of the railway transportations at LKAB had potential for improvement. One of the factors with potential for improved efficiency was the maintenance strategy. There is an indication that a change from a time-based maintenance strategy to a condition-based maintenance strategy would increase the efficiency of the train operations. The purpose of this thesis is to study and analyze wayside condition monitoring equipment for railway vehicles, in order to support the implementation of a condition-based maintenance strategy. To fulfill the stated purpose, five case studies, supported by a literature study, have been performed. The five case studies have been conducted to increase the knowledge of the abilities of available wayside condition monitoring equipment as a support for condition-based maintenance of railway vehicles. The literature study focused on railway operations around the world with a particular focus on the development, deployment and use of wayside condition monitoring equipment. The literature study indicates that there is an increasing implementation and use of equipment for wayside condition monitoring of railway vehicles. Through the studies it has become evident that the direct interaction in the wheel and rail interface also creates a huge potential for savings on the infrastructure due to an implementation of wayside condition monitoring equipment for railway vehicles. The case studies highlight the need for different systems that complement each other by measuring different parameters. It is also important that the systems are integrated with existing systems and practices in order to exploit the potential benefits of the new technology. Furthermore, it is important to have a joint approach between both infrastructure owners and train operators in the deployment and use of wayside condition monitoring equipment, since the technology can support a condition-based maintenance strategy on both sides that could have a great impact on the efficiency of railway operations.Luossavaara-Kiirunavaara AB (LKAB) är ett Svenskt gruvbolag som bryter järnmalm. Man har som målsättning att bli en av de ledande leverantörerna i världen av järnmalmsprodukter. I kedjan från brytning till slutkund, spelar transporteffektivitet en avgörande roll i företagets totala ekonomiska resultat. Transporterna av malm från LKAB:s gruvor i Kiruna och Malmberget utförs med järnvägstransporter till utskeppningshamnar i Narvik och Luleå. Järnvägstransporterna utförs av LKAB:s dotterbolag Malmtrafik i Kiruna AB (MTAB) på den Svenska sidan och av Malmtrafikk AS (MTAS) på den Norska sidan. Järnvägs transporternas effektivitet är därför en nyckelfunktion i LKAB:s gruvbrytningsverksamhet. I en benchmarkingstudie utförd på den totala effektiviteten av verksamheten hos gruvverksamheter med tunga järnvägstransporter runt om i världen blev det uppdagat att det finns en potential att förbättra effektiviteten hos LKAB:s järnvägstransporter. En av faktorerna som har potential att förbättra effektiviteten är underhållsstrategin. Det finns tydliga indikationer på att en förändring från ett förutbestämt underhåll till ett tillståndsbaserat underhåll skulle kunna öka järnvägstransporternas effektivitet. Syftet med denna licentiat avhandling är att utvärdera tekniska system som kan placeras vid spåret och användas som tillstånds övervakande utrustning för järnvägsfordon för att stödja en implementering av en tillståndsbaserad underhållsstrategi.För att uppnå det utsatta syftet har fem fallstudier, samt en litteratur studie genomförts. De fem fallstudierna har utförts för att öka kunskapen om egenskaperna hos tillgänglig tillståndsövervakande utrustning för placering vid spåret som stöd för tillståndsbaserat underhåll av järnvägsfordon. Litteraturstudien har fokuserats på järnvägsverksamheter i runt om i världen med speciellt fokus på utveckling, utplacering och användande av spårbunden tillståndsövervakningsutrustning .Litteraturstudien indikerar att det pågår en ökande implementering och användning av tillståndsövervakande utrustning för järnvägsfordon. Genom studierna har det framkommit att den direkta interaktionen mellan hjul och räl också skapar en stor potential för besparingar på infrastrukturen med hjälp av en implementering av spårbunden tillståndsövervakande utrustning för järnvägsfordonen.Case studierna belyser nödvändigheten av att ha olika system som kan komplettera varandra genom att mäta olika parametrar. Det är också viktigt att systemen är integrerade med existerande system och metoder för att uppnå de potentiella fördelarna med den nya teknologin. Det är dessutom viktigt att ha ett gemensamt tillvägagångssätt mellan både infrastrukturägare och tågoperatörer i implementeringen och användandet av spårbunden tillståndsövervakande utrustning, eftersom teknologin kan stödja en tillståndsbaserad underhålls strategi för båda sidor, vilket kan ha stor positiv inverkan på järnvägsdriftens effektivitet.
Godkänd; 2007; 20070315 (ysko)
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Lagnebäck, Robert. "Evaluation of wayside condition monitoring technologies for condition-based maintenance of railway vehicles /". Luleå : Luleå University of Technology, 2007. http://epubl.ltu.se/1402-1757/2007/18/.
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Nyateka, Netsai. "An evaluation of the role and effectiveness of simulation-based learning in the occupational health training of construction apprentices". Thesis, Loughborough University, 2017. https://dspace.lboro.ac.uk/2134/24371.
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Occupational ill-health statistics have consistently placed construction as a high risk industry. Younger workers (aged 15-24) constituting 24% of the UK construction workforce are a high risk group for occupational illnesses from more exposure to physical work factors including noise, vibrations and the handling of dangerous substances. The provision of effective training to young people entering the workforce is crucial in preventing occupational illnesses and improving the industry s occupational health (OH) performance. However, whilst the delivery of training in industries such as healthcare and aviation has rapidly been shifting from pedagogical/instructional theoretical frameworks towards more learner-focused andragogical approaches rich in hands-on/experiential learning, training in the construction industry has not taken full advantage of new training approaches. This thesis aims to examine OH training methods for UK construction apprentices and evaluate the role and effectiveness of a simulation-based training strategy, in order to enhance the OH training for construction apprentices. It presents and adopts innovative wearable, hands on simulations that were designed and developed at Loughborough University, called LUSKInS (Loughborough University Sensory and Kinaesthetic Interactive Simulations), to assess their value and utility in the training of construction apprentices. In order to address the research aim and provide comprehensive answers to the research questions, the research adopted an inductive, multimethods approach, in which the collection and analysis of data combined quantitative and qualitative research methods. First, reviews of theories of learning and existing research utilising simulation learning tools in various educational settings were carried out, to gather insights into how people learn, the theoretical underpinning to the use of simulations as well as the efficacy of simulation-based training. This analysis indicated that use of simulations that is based on the review and application of relevant learning theories has significant potential in enhancing the learning of construction apprentices. Furthermore, the analysis identified a need to move from traditional direct instructional training methods towards more experiential and learner-centred methods in construction education and training. Accordingly, the subsequent use of wearable simulations in the study was guided by experiential and constructivist learning principles, meaning that the research participants were provided with interactive and engaging contextual experiences, which allowed them to actively construct their own understanding, as opposed to them passively acquiring OH information from external sources. Second, fieldwork data was gathered through survey questionnaires, participant observations, semi-structured interviews and photo-elicitation. This involved construction apprentices and instructors from three colleges located in London, Midlands and Norfolk. Together, the quantitative and qualitative data confirmed that a traditional instructor-centred approach, which places emphasis on the passive transmission of information and the use of standardised presentations, texts and workbooks dominates the delivery of OH training for construction apprentices, despite many of the trainees in the study expressing a preference for highly engaging, active or hands-on methods of learning to passive, information-based approaches. It was clear from the findings that by failing to take into consideration the diversity in learning preferences among the trainees and the crucial role of interaction and learner participation in the learning process, the existing instructional strategies do not effectively support the learning of construction apprentices. Notably, the findings revealed that the prevailing views of training amongst instructors and their leaders, which endorse direct instructional strategies and uniformity, create barriers for opportunities to create and utilise more progressive learner-centred training strategies for construction apprentices. The findings related to the impact of the wearable simulations indicated that the use of hands-on simulations can be beneficial to the learning of construction apprentices. The simulations were found to be effective in developing the apprentices understanding of OH illnesses, as well as in changing some of their attitudes, particularly towards prioritising their health at work and adopting correct work practices, for example, wearing appropriate protective clothing when carrying out their work. In addition, the findings also showed that the simulations were largely perceived to be enjoyable, engaging and easier to understand compared to traditional training methods. However, challenges associated with the use of simulations were also identified, including the relatively high costs in terms of both time and money required in their development and implementation as well as challenges associated with trainer competence and adapting curricula to the newer training approach. Based on the empirical evidence and the related theoretical explanations, the study develops a set of propositions which not only challenge the current training paradigm, but more importantly identify the factors that can optimise the OH training of construction apprentices and overcome some of the barriers that were identified. In addition, a conceptual framework and typology of trainees learning styles are developed, in order to provide some practical guidance on how appropriate training strategies can be selected, as well as assist the wider application and integration of simulation learning tools.
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Henton, Glen Wade. "Dating and the MARK apprentice program a study in the appropriateness of the no-dating rule for MARK apprentices /". Theological Research Exchange Network (TREN), 1995. http://www.tren.com.
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Barr, Cecelia Evelyn Greene. "Mentoring, the critical link in clergy development effective practices of identifying, mentoring, and elevating clergy apprentices into transformational leadership /". Online full text .pdf document, available to Fuller patrons only, 2002. http://www.tren.com.
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Du, Zhenjian Cheung H. Tak. "Febrile condition and lymphocyte proliferation". Normal, Ill. Illinois State University, 1991. http://wwwlib.umi.com/cr/ilstu/fullcit?p9203029.
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Thesis (Ph. D.)--Illinois State University, 1991.Title from title page screen, viewed December 8, 2005. Dissertation Committee: H. Tak Cheung (chair), Herman E. Brockman, Lynne A. Lucher, Anthony J. Otsuka, Alan J. Katz. Includes bibliographical references (leaves 99-110) and abstract. Also available in print.
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Pena, Nicholas. "Land of the American condition". Diss., Columbia, Mo. : University of Missouri-Columbia, 2005. http://hdl.handle.net/10355/5834.
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Thesis (M.F.A.)--University of Missouri-Columbia, 2005.The entire dissertation/thesis text is included in the research.pdf file; the official abstract appears in the short.pdf file (which also appears in the research.pdf); a non-technical general description, or public abstract, appears in the public.pdf file. Title from title screen of research.pdf file viewed on (January 24, 2007) Vita. Includes bibliographical references.
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Bayrak, Hakan. "Lifetime Condition Prediction For Bridges". Phd thesis, METU, 2011. http://etd.lib.metu.edu.tr/upload/12613793/index.pdf.
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Infrastructure systems are crucial facilities. They supply the necessary transportation, water and energy utilities for the public. However, while aging, these systems gradually deteriorate in time and approach the end of their lifespans. As a result, they require periodic maintenance and repair in order to function and be reliable throughout their lifetimes. Bridge infrastructure is an essential part of the transportation infrastructure. Bridge management systems (BMSs), used to monitor the condition and safety of the bridges in a bridge infrastructure, have evolved considerably in the past decades. The aim of BMSs is to use the resources in an optimal manner keeping the bridges out of risk of failure. The BMSs use the lifetime performance curves to predict the future condition of the bridge elements or bridges. The most widely implemented condition-based performance prediction and maintenance optimization model is the Markov Decision Process-based models (MDP). The importance of the Markov Decision Process-based model is that it defines the time-variant deterioration using the Markov Transition Probability Matrix and performs the lifetime cost optimization by finding the optimum maintenance policy. In this study, the Markov decision process-based model is examined and a computer program to find the optimal policy with discounted life-cycle cost is developed. The other performance prediction model investigated in this study is a probabilistic Bi-linear model which takes into account the uncertainties for the deterioration process and the application of maintenance actions by the use of random variables. As part of the study, in order to further analyze and develop the Bi-linear model, a Latin Hypercube Sampling-based (LHS) simulation program is also developed and integrated into the main computational algorithm which can produce condition, safety, and life-cycle cost profiles for bridge members with and without maintenance actions. Furthermore, a polynomial-based condition prediction is also examined as an alternative performance prediction model. This model is obtained from condition rating data by applying regression analysis. Regression-based performance curves are regenerated using the Latin Hypercube sampling method. Finally, the results from the Markov chain-based performance prediction are compared with Simulation-based Bi-linear prediction and the derivation of the transition probability matrix from simulated regression based condition profile is introduced as a newly developed approach. It has been observed that the results obtained from the Markov chain-based average condition rating profiles match well with those obtained from Simulation-based mean condition rating profiles. The result suggests that the Simulation-based condition prediction model may be considered as a potential model in future BMSs.
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Sæther, Jørgen Hagemo. "Choke condition and performance monitoring". Thesis, Norges teknisk-naturvitenskapelige universitet, Institutt for marin teknikk, 2010. http://urn.kb.se/resolve?urn=urn:nbn:no:ntnu:diva-11623.
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Sand production is a common complex problem in the oil and gas industry, and choke valves is typically suffering for this in form of erosive damage. The degree of erosive damage is decided by many different factors where the flow rate velocity and the sand rate are the most important ones. Much effort has been spent on ways of reducing the choke erosion to be able to maintain the oil and gas production at an optimal level with attention to increased profit, safety and availability. Use of Computational Fluid Dynamics (CFD) has been essential in this work by simulating flow through the choke valve for optimizing the choke design, choosing the optimal erosion resistant material, coming up with improved erosion-related models, and optimal operational procedures of the choke. Producing with Acceptable Sand Rate (ASR), which means allowing a certain degree of sand erosion in chokes, have proven to be a successful way of maintaining the oil and gas production at an optimal level. To satisfy ASR-production, demands are made on an optimal use of condition and performance monitoring equipment and tools. The use of the condition and performance monitoring tool INSIGHT (from ABB) has in general proven to be successful for satisfying the ASR-production on different Statoil fields, including Statfjord which is in this thesis the area of focus regarding the use of INSIGHT. Important condition monitoring data such as sand rate, flow rate and pressure necessary to say something about the choke erosion status in INSIGHT must be as good as possible, because the quality of the results are limited by quality of the input data. In this thesis, INSIGHT has been presented, discussed and tested to be able to come up with possible limitations and improvements with special attention to condition monitoring (input) data used in INSIGHT.
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Romanowska, Daria Krystyna. "Calculating condition of pavement structure". Thesis, Norges teknisk-naturvitenskapelige universitet, Institutt for bygg, anlegg og transport, 2012. http://urn.kb.se/resolve?urn=urn:nbn:no:ntnu:diva-18606.
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In XX century, Pavement Management System has became obligatory to be used by road agencies. Need of serviceable road system demands the proper maintenance and rehabilitation plans and at that point, Pavement Performance Models step in. They are used to predict the future condition of pavement structure, basing mostly on road, climate and traffic data.The following thesis describes the attempts to implement modern Pavement Performance Models in Norway. With their help, it would be possible to predict pavement’s deterioration in better way and therefore, perform better plan maintenance and rehabilitation of the road systems.First chapter of the thesis describes the theory of Pavement Management System. It explains what Pavement Management System is and what are its levels. Later in the chapter, some of the Pavement Performance Models are described. They were considered as potentially relevant for calibration to Norwegian conditions by NordFoU- the Scandinavian co-operation program. The work of NordFoU was also described here.The historical data from Nasjonal Vegdatabank (NVDB) are described in the Chapter 3. Graphs show the rutting in all subsections on two roads- E6 and Fv 704 in Sør- Trøndelag, in Norway. E6 represents the roads with big traffic and Fv704- regional roads with small traffic. The methods of gathering road data by Statens Vegvesen are also described.In Chapter 4, the equations for calculations are shown. All equations have been adopted from the papers published by NordFoU, which are based on the HDM-4 manuals. Some of the equations come from Swedish guidelines about back- calculating E- moduli of the pavement layers. This chapter also contains assumptions and values of the coefficients that were used in calculations within following thesis. Optimisation of calibration factors was done in Excel Solver. These calculations can be found in Appendixes 7, 8, 9 and 10.The results of the calculations are shown in Chapter 5. The measured and calculated results are compared. The model of rutting has shown good correlation with reality. For E6, over 90 % of data were covered with the model. For Fv 704, the correlation was a bit worse, but still satisfactory. Value of coefficient of determination (R2) was calculated to be 58 % using the roughness model. However, in order to get better value, it is possible to further calibrate the model by modifying length of the sections and by using a new measuring equipment (ViaPPS).Chapter 6 includes the conclusion for the performed calibration and HDM-4 models. The correlation between the models and reality has been discussed. The use of studded tyres is observed to be the main contributor to deepening of the mean rut depth, other factors have negligible effect on rutting.In the following thesis calibration of only two HDM-4 models was performed. The two models were rutting and roughness respectively. A good correlation was obtained, however it is recommended to work on roughness and climate models. The rest of the models in a program can be calibrated in the future, after gathering more detailed road data, such as edge- break and cracking.
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Moussa, Wael. "Thermography-Assisted Bearing Condition Monitoring". Thesis, Université d'Ottawa / University of Ottawa, 2014. http://hdl.handle.net/10393/31379.
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Abstract
Despite the large amount of research work in condition based maintenance and condition monitoring methods, there is still a need for more reliable and accurate methods.
The clear evidence of that need is the continued dependence on time based maintenance, especially for critical applications such as turbomachinery and airplane engines. The lack of accurate condition monitoring systems could lead to not only the unexpected failures as well as the resulting hazards and repair costs, but also a huge waste of material and time because of unnecessary replacement due to false alarms and unnecessary repair and maintenance.
Temperature change is a phenomenon that accompanies every dynamic activity in the universe. However, it has not been adequately exploited for mechanical system condition monitoring. The reason is the slow response of current temperature monitoring systems compared to other condition monitoring methods such as vibration analysis. Many references inferred that the change in temperature is not sensible until approaching the end of the monitored component life and even the whole system life (Kurfess, et al., 2006; Randall, 2011; Patrick, et al., March 7-14, 2009).
On the other hand, the most commonly used condition monitoring method, i.e., vibration analysis, is not free from pitfalls. Although vibration analysis has shown success in detecting some bearing faults, for other faults like lubrication problems and gradual wear it is much less effective. Also, it does not give a reliable indication of fault severity for many types of bearing faults.
The advancement of thermography as a temperature monitoring tool encourages the reconsideration of temperature monitoring for mechanical system fault detection. In addition to the improved accuracy and responsiveness, it has the advantage of non-contact monitoring which eliminates the need for complex sensor mounting and wiring especially for rotating components.
Therefore, in current studies the thermography-based monitoring method is often used either as a distinct method or as a complementary tool to vibration analysis in an integrated condition monitoring system. The main objectives of this study are hence to:
1. Define heat sources in the rolling element bearings and overview two of the most famous bearing temperature calculation methods.
2. Setup a bearing test rig that is equipped with both vibration and temperature monitoring systems.
3. Develop a temperature calculation analytical model for rolling element bearing that include both friction calculation and heat transfer models. The friction calculated by the model will be compared to that calculated using the pre-defined empirical methods. The heat transfer model is used for bearing temperature calculation that will be compared to the experimental measurement using different temperature monitoring devices.
4. Propose a new in-band signal enhancement technique, based on the synchronous averaging technique, Autonomous Time Synchronous Averaging (ATSA) that does not need an angular position measuring device. The proposed method, in addition to the Spectral Kurtosis based band selection, will be used to enhance the bearing envelope analysis.
5. Propose a new method for classification of the bearing faults based on the fault severity and the strength of impulsiveness in vibration signals. It will be used for planning different types of tests using both temperature and vibration methods.
6. Develop and experimentally test a new technique to stimulate the bearing temperature transient condition. The technique is supported by the results of finite element modeling and is used for bearing temperature condition monitoring when the bearing is already running at thermal equilibrium condition.
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Torberger, Fredrik. "MIND-WANDERING – A Human Condition". Thesis, Högskolan i Skövde, Institutionen för biovetenskap, 2014. http://urn.kb.se/resolve?urn=urn:nbn:se:his:diva-10388.
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Mind-wandering was until recently not a mainstream topic of research. The aim of this literature review is to present current views on the definition of mind-wandering and how the phenomenon is experienced. Furthermore, it gives an account of the implications of mind-wandering on cognitive performance, as well as its neurological correlates. In addition, the methods used to study mind-wandering are reviewed.The study of mind-wandering reveals a highly frequent phenomenon with practical consequences on a broad scale, both disruptive and supportive to goal-related behaviour and wellbeing in general. Originating from the default network, and its regions related to representations of self, memory, Theory of Mind, empathy and creativity, mind-wandering is hypothesized to be a function for planning one’s future life. Suggested further research concerns how mind-wandering can be countered, detected from the outside and whether it alters the physical feature of the brain.
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Horch, Alexander. "Condition Monitoring of Control Loops". Doctoral thesis, Stockholm : Tekniska högsk, 2000. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-3050.
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Tu, Yu-Chen. "Condition-based maintenance cost model". Diss., Online access via UMI:, 2006.
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Hawarny, Michael. "Adaptability, structural expression, tectonic condition". This title; PDF viewer required Home page for entire collection, 2008. http://archives.udmercy.edu:8080/dspace/handle/10429/9.
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Sandberg, Erik. "Condition monitoring in steel industry". Thesis, University of Manchester, 2008. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.489505.
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This thesis presents investigations about the applicability of different multivariate statistical methods (OLS, PCA, PCR, PLS) for condition monitoring of steel industry processes (electric arc furnaces and blast furnaces). The work has been focused on three main areas; condition monitoring of blast furnaces (BF), charge material mix optimisation for electric arc furnaces (EAF) and batch-monitoring of EAFs.
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Macintyre, John. "Condition monitoring and neural networks". Thesis, University of Sunderland, 1996. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.297129.
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Brown, S. A. "Condition monitoring using stable isotopes". Thesis, Imperial College London, 1987. http://hdl.handle.net/10044/1/38246.
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Huang, Zheng. "Integrated railway remote condition monitoring". Thesis, University of Birmingham, 2017. http://etheses.bham.ac.uk//id/eprint/7904/.
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The profound value of wayside monitoring in helping safeguard the RAMS of railway operations is undeniable. However, despite significant investments by the rail industry, the efficiency and reliability of wayside monitoring have not reached the desired level. Structural deterioration of the rail infrastructure and rolling stock faults still remain a significant problem which needs to be addressed as traffic density, train speeds and axle loads increase in rail networks around the world. The main objectives of this study were to develop and evaluate an advanced wayside monitoring system based on acoustic emission and vibration analysis that can detect various types of axle bearing defects in rolling stock and structural deterioration in cast manganese crossings. The potential architecture for different levels of system correlation has been proposed which can be further integrated with customised monitoring system. A novel signal processing technique based on spectral coherence has been developed. This particular method is based on the identification of suitable templates containing features of interest. It also features in identifying the severity of the defect. In addition, a suitable approach for data fusion from various sensors has been investigated. Successful tests have been carried out under simulated conditions and in the UK network.
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Zhao, Xiaoyu. "Condition Monitoring of Hydraulic Systems". Thesis, KTH, Maskinkonstruktion (Inst.), 2015. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-183005.
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The purpose of this project is to investigate and propose a system for condition monitoring and analysis of the hydraulic system of a forestry machine based on available on-board oil quality sensor data. The sample machine used was Scorpion King from Ponsse. This machine is equipped with an Icount PDR particle sensor from Parker. A two weeks long field test was conducted by Skogforsk. The data measured by the particle counter was collected, and breaks longer than five minutes were recorded as well as the reason for each break. The main results from the thesis are the relations between three factors: number of particles in the oil, machine operations, and machine breaks. The thesis also aims at proposing how the operator could use the Icount PDR data to manage the maintenance of the machine.Syftet för detta projekt är att utreda och föreslå ett system för tillståndsövervakning och analys av en skogsmaskins hydraulsystem baserat på tillgängliga data från ombordmonterade partikelsensorer. Den maskin som studerats är Ponsse Scorpion King, som är utrustad med partikelsensorn Icount PDR från Parker. Data samlades in under en två veckor lång fälttest. Maskinoperationerna och mätdata från partikelräknaren samlades in, och orsakerna till avbrott längre än fem minuter loggades manuellt. Resultatet av detta examensarbete presenterar relationerna mellan tre faktorer: partikelantal hos hydrauloljan, maskinens verksamhet och de avbrott som inträffade. Denna avhandling avser också föreslå hur informationen från Icount PDR skall presenteras för operatören och hur förebyggande maskinunderhåll skall kunna planeras.
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Zandberg, Hermanus Andries Jakobus. "Wireless transformer condition monitoring system". Thesis, Cape Peninsula University of Technology, 2013. http://hdl.handle.net/20.500.11838/1186.
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The Department of Electrical Engineering in fulfilment of the
requirements for the Magister Technologiae in Electrical
Engineering at the
Cape Peninsula University of Technology
November 2013Pole mounted transformers (PMT) in rural areas present an opportunity for local utilities to do current monitoring on these systems. These transformers are exposed to abnormal amounts of stress due to the vast power demand in these areas. The aim of this study is to develop a more cost-effective condition monitoring system. Transformer current monitoring can be a dangerous practice if not done by suitably trained utility electricians. Hence this study is partly aimed at the elimination of hazardous working environments associated with manual electrical measurements. An investigation to determine a safe and cost-effective way to obtain the electrical measurements required from PMTs is undertaken. Although current measurements can be done with a current clamp-on meter, these measurements still take place at the phases of the transformer and are unsafe. The possibility of implementing wireless data gathering on current clamp-on meters is therefore investigated. This is made possible by a wireless sensor node (WSN) which gathers information and transmits it wirelessly to a WSN base station. This wireless solution is battery powered, necessitating battery replacements, therefore leading to the investigation of magnetic fields, magnetic materials and magnetic induction. A current clamp able to generate a high voltage (HV) output with minimal magnetic field strength is developed. The magnetic fields produced by the transformer’s phase cables are used to generate an alternating voltage. With the help of a microcontroller and an energy harvesting circuit, this voltage is converted and used to charge supercapacitors. The magnetic fields are also used to determine the current flow in the transformer phase cables when the device is not in energy harvesting mode. The device will then undergo comprehensive laboratory testing to determine its accuracy and durability, and is then used to do ‘real life’ current measurements, the results of which are compared against an off-the-shelf current monitoring device.
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Falconnet, Agnès, i Florence Falconnet. "La condition juridique de l'animal". Lyon 3, 1992. http://www.theses.fr/1992LYO33001.
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Les rapports de l'homme et de l'animal sont complexes et contradictoires. Tantot l'homme exploite l'animal comme une chose inanimee, tantot il prend en consideration sa sensibilite. Ces attitudes se retrouvent dans le droit. Tout d'abord, puisque l'animal est un instrument aux mains des hommes, le droit retient une conception utilitaire de l'animal. Lui conferant un statut de bien, il le prend en compte comme element de la vie economique. Le droit en regit l'appropriation et organise la reparation des dommages qu'il peut causer. Quand il protege l'animal, c'est pour satisfaire les besoins de l'homme, que ces besoins soient d'ordre moral ou ecologique. Ensuite, l'animal etant un etre sensible comme l'homme, le droit adopte une conception humanitaire en considerant l'animal pour lui-meme. Il protege la sensibilite animale par l'existence d'incriminations generales (art. R. 38. 12 code penal: mauvais traitements; art. 453 code penal: actes de cruaute) mais aussi par la reglementation de nombreuses activites susceptibles d'occassionner ou occasionnant des souffrances a l'animal. Plus recemment, la prise en consideration de l'animal comme une fin en soi s'est traduite par une marche de l'animal vers la qualite de sujet de droit. Mais la personnalite animale est tres controversee et difficile a elaborerRelations between human and animal are complex and inconsistent. Either human uses animal as a thing without any life or he takes care of it on account of its sensitiveness. These behaviours appear in the substanctive law. First of all, since animal is an instrument in human's hands, the substantive law has an utilitarian conception. Giving to animal the legal position of things, of considers it as a part of economic life. The substantive law rules its appropriation and settles the compensation of animal's damages. When animal is protected, it is in order to satisfy human's needs (moral need or ecological need). Next, animal being a creature like human, the substantive law has a humanitarian conception when it considers animal for itself. It protects animal's sensitiveness through general criminal enactments (paragraph r. 38. 12 criminal code : ill-usages; paragraph 453 criminal code : cruel acts) and also through enactments about human activenesses which are dangerous for animals. Lately, the legal care for animal appears through emergency of an embryo of personality. But the animal's personality is a debated notion which is difficult to build
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Sicakyuz, Michael. "La condition juridique des mannequins". Paris 9, 1995. https://portail.bu.dauphine.fr/fileviewer/index.php?doc=1995PA090033.
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La profession de mannequin est depuis quelques temps au cœur de l'actualité. On ne s'intéresse presque jamais à ce genre de profession d'un point de vue juridique. Nombreux sont ceux qui pensent qu'aucune règlementation n'existe, y compris les mannequins eux-mêmes. En 1990, le législateur français a mis en place des dispositions tendant à éclairer la situation dans laquelle se trouve un mannequin lorsqu'il travaille. La loi du 12 juillet 1990 est codifiée sous les articles l 763 et suivants du code du travail. Elle impose aux agences de mannequins d'obtenir une licence et une garantie financière. Le mannequin qui travaille avec une agence devient son salarié. Grâce à l'existence d'une présomption de salariat quasi irréfragable au sein de ladite loi, le mannequin qui travaille sans agence est également salarié, mais du client utilisateur. La loi est d'ordre public. Ces dispositions sont donc incontournables, sous peine de sanctions. Le mannequin d'agence ou le mannequin "libre" exercent la même profession. Ils ont donc les mêmes droits professionnels ou personnelsModeling has been a space time lighted by the Medias, but no one cares about the law point of view and no one knows that it does exist, the models themselves. In 1990, the French legislation set up a system that helps the model when he is working. This law is registered under the articles l 763 of the working code, and obliged the models agencies to obtain a license and a financial guarantee. The model who works for a agency becomes a salaried, and the free lance is salaried of his client. This law is a public registration, and you are not allowed to deal with it. The free lance is salaried of his client. This law is a public registration, and you are not allowed to deal with it. The free lance model or the one who works for an agency have the same status and have the same individual and professional rights
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Cluchat, Thierry. "Validité de la condition d'impédance". Bordeaux 1, 1992. http://www.theses.fr/1992BOR10636.
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On étudie la diffraction d'une onde plane harmonique par des objets constitues de matériaux dissipatifs à fort indice relatif, cadre d'application de la condition d'impédance. Les configurations traitées sont le corps homogène et le noyau conducteur recouvert d'une ou plusieurs couches de matériaux. On mène une étude asymptotique à indice relatif grand du champ électromagnétique dans le matériau. On trouve des estimations et un résultat de décroissance locale rapide sur les champs par méthode variationnelle dans un cadre fonctionnel approprie. Puis on détermine une approximation des champs sous forme de développements asymptotiques double-échelle dans un système de coordonnées locales à la surface de l'objet; on en déduit un développement asymptotique de la section efficace radar et des estimations d'erreur par méthode variationnelle. Ces développements asymptotiques vérifient une condition d'impédance corrigée plus fine que la condition classique de Leontovitch. Une application numérique est effectuée dans le cas de la couche épaisse de matériaux purement dissipatifs, et montre l'amélioration obtenue grâce a la condition d'impédance corrigée, pourvu que la correction ne soit pas trop forte.