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Tane, Julien. "Query-based multicontexts for knowledge base browsing." [S.l. : s.n.], 2007. http://digbib.ubka.uni-karlsruhe.de/volltexte/1000007530.
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Ren, Yajun. "Dual organocatalysis for the development of Michael-initiated enantioselective organocascades." Thesis, Ecole centrale de Marseille, 2015. http://www.theses.fr/2015ECDM0005.
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Les travaux de recherche fondamentale présentés ici sont ancrés au cœur de la chimie organique de synthèse moderne, et plus particulièrement dans le domaine de la multi-organocatalyse énantiosélective. Dans ce manuscrit, nous avons identifié deux organocascades originales et démontré la pertinence synthétique de l'une d'elle par des applications en synthèse totale de produits naturels. L’originalité de ce travail repose sur l’utilisation d’un NHC de la classe des 1,3-imidazol-2-ylidenes comme base de Brønsted ou base de Lewis organocatalytiqueThe basic research work presented herein is anchored at the core of modern synthetic organic chemistry, and more specifically in the field of enantioselective multi-organocatalysis. In this manuscript, we have identified two original organocascades and demonstrated the synthetic relevance of one of these through applications in total synthesis. The originality of the work lies on the use of a 1,3-imidazol-2-ylidene NHC as an organocatalytic Brønsted or Lewis base
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Rousseau, Thomas. "Modélisation multi-échelle de la modification de structure d'un alliage à base de nickel soumis à de très fortes déformations plastiques en surface." Thesis, Lyon, 2016. http://www.theses.fr/2016LYSEC016/document.
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La compréhension des effets du grenaillage ultrasonore sur l’intégrité de surface des composants métalliques représente un enjeu industriel important. Dans le cadre de cette thèse, une modélisation physique multi-échelle de la plasticité cristalline à la DEM (Discrete Element Model) a été développée. Le grenaillage ultrasonore consiste à mettre en mouvement des billes à l’intérieur d’une enceinte par vibration de la sonotrode. Les impacts répétés sur le matériau entraînent un écrouissage en surface, l’établissement de contraintes résiduelles de compression et la formation d’une couche nanostructurée. L’objectif de cette thèse est d’obtenir une meilleure compréhension des mécanismes conduisant à ces modifications sur un alliage à base nickel. Le mouvement des billes obtenu par DEM est relié aux modifications de la microstructure sous impacts via un modèle éléments finis utilisant une loi de plasticité cristalline. Après validation de chaque étape par des mesures expérimentales, le modèle a permis d’étudier l’effet de la quantité de billes utilisées dans le procédé. Ainsi, un nombre croissant de billes induit une augmentation d’impacts en biais de faible vitesse permettant de concentrer les contraintes résiduelles de compression en extrême surface. De plus, les simulations multi-impacts utilisant une loi de plasticité cristalline ont montré que ces impacts en biais engendraient une densité totale de dislocations et un niveau de désorientations élevées pouvant expliquer la fragmentation des grains et la nanostructuration de la surface. Enfin, ces modifications de la microstructure, visibles jusqu’à 300 µm de profondeur, sont en accord avec les profils de dureté obtenus par nano-indentation et les profils de désorientation issus de l’analyse EBSD (Electron BackScatter Diffraction)Ultrasonic shot peening is widely used to improve mechanical properties of metallic components. Mastering the effects of this surface treatment is a major industrial issue. A physical multi-scale modelling based on crystal plasticity and DEM (Discrete Element Model) was developed in this PhD thesis. This process is performed in a closed chamber where spherical balls are moved by sonotrode vibration. Thousands of impacts induce hardening, residual compressive stress and microstructure modification leading to a nanostructured layer. The aim of this work was to improve our understanding of the mechanisms occurring during this process on nickel-based alloys. Ball motion was computed by DEM and linked to microstructure modifications induced by impacts through a crystal plasticity finite element model. Experimental analyses were performed in order to validate each step of the multi-scale modelling. Then the model was applied to investigate ball quantity effects on peened surface modification. Increasing the number of balls created a larger quantity of low speed oblique impacts which concentrated the residual compressive stress near the surface. Furthermore multi-impacts performed with a crystal plasticity law showed oblique impacts enhanced dislocation storage and disorientations within grains, which could explain the nanostructuration of the peened surface. Moreover, the numerical microstructure modification, observed up to 300 µm in depth, was in agreement with hardness profiles obtained by nanoindentation and disorientation profiles measured by EBSD (Electron BackScatter Diffraction) analysis
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Léglise, Mélissa. "Amélioration des propriétés mécaniques et chimiques de superalliages base nickel et base cobalt de fonderie utilisés pour le fibrage du verre fondu à 1000°C - 1100°C." Thesis, Université de Lorraine, 2018. http://www.theses.fr/2018LORR0228.
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Les assiettes de fibrage utilisées pour la production de fibres de verre subissent d’importantes contraintes mécaniques, chimiques et thermiques. Par conséquent, cette pièce se dégrade et doit être périodiquement remplacée. Le but de ces travaux est d’augmenter la durée de vie des assiettes de fibrage en améliorant les propriétés mécaniques et chimiques des superalliages qui les constituent. Plus précisément, l’objectif de cette thèse est, dans un premier temps, d’améliorer les alliages utilisés pour le fibrage à 1000°C, puis dans un second temps, de trouver un superalliage pouvant fibrer à 1125°C. Ces travaux ont été menés sur deux familles de superalliages : base nickel et base cobalt. Les propriétés chimiques ont été caractérisées par des essais thermogravimétriques et les propriétés mécaniques par des essais de fluage flexion 3 points. Pour l’alliage base Ni, l’influence des éléments minoritaires subis, Mn et Si, a été étudiée. Les propriétés mécaniques de cet alliage ont fait, ensuite, l’objet d’essais d’amélioration par l’addition de titane, zirconium, tantale, hafnium et de niobium. L’addition d’aluminium a été aussi expérimentée mais ayant pour but d’améliorer les propriétés chimiques de l’alliage. Enfin, des études ont été aussi menées sur l’addition de métaux nobles (Pd et Ru) et de terres rares (Y, La et Ce). Concernant les superalliages base cobalt, l’étude s’est portée sur un alliage base Co qui a antérieurement montré de bonnes propriétés générales pour une utilisation à 1125°C et non à 1000°C. Des variantes avec une teneur abaissée en tantale, sans hafnium et sans tungstène ont été étudiées. Pour clore ces travaux, l’augmentation de la teneur en nickel et un traitement thermique ont été étudiés afin d’améliorer la résistance à l’oxydation de ce second alliageThe fiberizing spinners used to produce the glass fibers undergo sizable mechanical, chemical and thermal solicitations. Therefore, this piece is degraded and must be periodically replaced. The purpose of these works is to increase the lifetime of the fiberizing spinners by improving the mechanical and chemical properties of the superalloys that constitute them. More precisely, the objective of this thesis is, in the first time, to improve the alloys used to fiberize at 1000°C, and in a second time, to find a superalloy that can fiberize at 1125°C. These works are focused on two families of superalloys: nickel-based and cobalt-based. The chemical properties are characterized by the thermogravimetry tests and the mechanical properties by 3 points flexural creep tests. For the Ni-based alloy, the influences of unwanted minority elements, Mn and Si, were studied. The mechanical properties of this alloy are subject to improvement tests by the addition titanium, zirconium, tantalum, hafnium and niobium. The aluminium addition was also experimented but with the aim of improving the chemical properties of the alloy. Finally, the studies were also driven on the addition of noble metals (Pd and Ru) and of rare earths (Y, La and Ce). Concerning the cobalt-based superalloys, the study focused on an alloy which has previously shown good general properties to be used at 1125°C and no at 1000°C. The versius with a lowered content in tantalum, without tungsten and without hafnium were studied. To close this work, the increase of nickel and a heat treatment were studied in order to improve the oxidation resistance of this second alloy
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Pennala, J. (Joni). "Cloud-based testing of 4G base station software." Master's thesis, University of Oulu, 2017. http://urn.fi/URN:NBN:fi:oulu-201706022463.
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Executing test automation for large-scale software-intensive embedded systems requires a lot of hardware because tests must be executed for different hardware configurations. When there is not enough hardware for all kind of configurations, other solutions are developed to fill high test coverage with less hardware. Placing simulated configurations to the cloud makes the hardware usage more effective. The case company has developed a cloud-based testing service for embedded systems which are in this case 4G base stations. This study investigated how well the service fulfils the target team’s needs for testing. Testers have a different kind of requirements for cloud-based testing. Requirements were split into four categories from the qualitative data which was collected by interviewing testers of the target team. Requirement categories are test environments, test automation development, test execution and partly-simulated system under tests, more commonly known as SUTs. Four tests were implemented to the cloud with Robot Framework which is a test automation tool for developing automated tests. An empirical data showed that executing cloud-based tests is not always so fast due to long waiting times of getting a test environment from the cloud. However, when test environments were received they have initialised automatically with default settings and required testing tools. That reduces testers’ workload because locally built test environments require a lot of manual work like maintaining test environments. Beside other research questions, this study investigated fault detection capability of partly-simulated SUTs. 34 Cloud-based tests with partly-simulated SUTs were executed. 26 Tests passed and 8 tests failed. The simulator’s software caused only one failure and tested software caused other seven failures. From these statistics, we can at least say that the partly-simulated SUT can find some faults. The study also investigated a specific fault which was not found in the simulator even though it was found in the real SUT, which was a clear disadvantage.
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Mathews, Steffy Ann. "Optimization of an SDR Based Aerial Base Station." Thesis, University of North Texas, 2017. https://digital.library.unt.edu/ark:/67531/metadc1011834/.
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Most times people are unprepared to face natural disasters resulting in chaos, increased number of deaths, etc.Emergency responders need an efficiently working communication network to get in touch with the emergency services like hospitals, police, fire and rescue as well as people who are stranded. Such a network is also the need of the hour for survivors to contact their near and dear ones. One of the major barriers of communication during an emergency is the destruction of network elements. In case the communication devices survive the calamity, odds of the network getting congested are certainly high because almost everyone will be trying to use the same network resources. An important factor when dealing with emergency situations is the calls for an immediate response and an efficient Emergency Communication Systems (ECS). Currently there is a capability gap between existing ECS solutions and what we dream of achieving. Most current solutions do not meet cost or mobility constraints. An inexpensive, portable and mobile system will fulfill this capability gap. The main purpose of this research is to optimize the altitude and received signal strength of an aerial base station to provide maximum radio coverage on the ground as well as propose the best fit radio propagation channel model to carry out the experiment for the current scenario.
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Reed, Alan. "Site-Based Management, Knowledge Base of Kentucky Superintendents." TopSCHOLAR®, 1990. http://digitalcommons.wku.edu/theses/1990.
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Recent educational literature has stressed the benefits of site-based management as a valuable tool in school reorganization. Following a recent ruling of the state Supreme Court and legislative mandate for implementation of site-based management, a survey was designed for the purpose of ascertaining the knowledge base among superintendents of the Commonwealth of Kentucky on the topic “site-based management” The data revealed that while there was considerable interest in site-based management among superintendents, there was also considerable confusion on the topic. Superintendents were largely unaware of a rather large body of research which clearly demonstrated the merits of participatory management in business and industry, and more recently site-based management in United States schools. Furthermore, the data revealed the existence of role ambiguity, resistance of role ambiguity, resistance to immediate implementation of site-based management, doubt over the longevity of site-based management, and nearly universal desire for training in site based-management for the respondents and their staff members. A number of recommendations were cited including the call for the superintendents to familiarize themselves with the abundant literature, standardization of terminology and immediate implementation of intensive training programs in site-based management for superintendents and others.
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Rahman, Md Rashedur. "Knowledge Base Population based on Entity Graph Analysis." Thesis, Université Paris-Saclay (ComUE), 2018. http://www.theses.fr/2018SACLS092/document.
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Le peuplement de base de connaissance (KBP) est une tâche importante qui présente de nombreux défis pour le traitement automatique des langues. L'objectif de cette tâche est d'extraire des connaissances de textes et de les structurer afin de compléter une base de connaissances. Nous nous sommes intéressés à la reconnaissance de relations entre entités. L'extraction de relations (RE) entre une paire de mentions d'entités est une tâche difficile en particulier pour les relations en domaine ouvert. Généralement, ces relations sont extraites en fonction des informations lexicales et syntaxiques au niveau de la phrase. Cependant, l'exploitation d'informations globales sur les entités n'a pas encore été explorée. Nous proposons d'extraire un graphe d'entités du corpus global et de calculer des caractéristiques sur ce graphe afin de capturer des indices des relations entre paires d'entités. Pour évaluer la pertinence des fonctionnalités proposées, nous les avons testées sur une tâche de validation de relation dont le but est de décider l'exactitude de relations extraites par différents systèmes. Les résultats expérimentaux montrent que les caractéristiques proposées conduisent à améliorer les résultats de l'état de l'artKnowledge Base Population (KBP) is an important and challenging task specially when it has to be done automatically. The objective of KBP task is to make a collection of facts of the world. A Knowledge Base (KB) contains different entities, relationships among them and various properties of the entities. Relation extraction (RE) between a pair of entity mentions from text plays a vital role in KBP task. RE is also a challenging task specially for open domain relations. Generally, relations are extracted based on the lexical and syntactical information at the sentence level. However, global information about known entities has not been explored yet for RE task. We propose to extract a graph of entities from the overall corpus and to compute features on this graph that are able to capture some evidence of holding relationships between a pair of entities. In order to evaluate the relevance of the proposed features, we tested them on a task of relation validation which examines the correctness of relations that are extracted by different RE systems. Experimental results show that the proposed features lead to outperforming the state-of-the-art system
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NAVA, GABRIELE. "Instantaneous Momentum-Based Control of Floating Base Systems." Doctoral thesis, Università degli studi di Genova, 2020. http://hdl.handle.net/11567/1004907.
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In the last two decades a growing number of robotic applications such as autonomous drones, wheeled robots and industrial manipulators started to be employed in several human environments. However, these machines often possess limited locomotion and/or manipulation capabilities, thus reducing the number of achievable tasks and increasing the complexity of robot-environment interaction. Augmenting robots locomotion and manipulation abilities is a fundamental research topic, with a view to enhance robots participation in complex tasks involving safe interaction and cooperation with humans. To this purpose, humanoid robots, aerial manipulators and the novel design of flying humanoid robots are among the most promising platforms researchers are studying in the attempt to remove the existing technological barriers. These robots are often modeled as floating base systems, and have lost the assumption -- typical of fixed base robots -- of having one link always attached to the ground.
From the robot control side, contact forces regulation revealed to be fundamental for the execution of interaction tasks. Contact forces can be influenced by directly controlling the robot's momentum rate of change, and this fact gives rise to several momentum-based control strategies. Nevertheless, effective design of force and torque controllers still remains a complex challenge. The variability of sensor load during interaction, the inaccuracy of the force/torque sensing technology and the inherent nonlinearities of robot models are only a few complexities impairing efficient robot force control.
This research project focuses on the design of balancing and flight controllers for floating base robots interacting with the surrounding environment. More specifically, the research is built upon the state-of-the-art of momentum-based controllers and applied to three robotic platforms: the humanoid robot iCub, the aerial manipulator OTHex and the jet-powered humanoid robot iRonCub. The project enforces the existing literature with both theoretical and experimental results, aimed at achieving high robot performances and improved stability and robustness, in presence of different physical robot-environment interactions.
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Böris, Elin, and Vendela Hall. "Developing a Methodology for Supplier Base Reduction : A Case Study at Dynapac GmbH." Thesis, Linköpings universitet, Institutionen för ekonomisk och industriell utveckling, 2015. http://urn.kb.se/resolve?urn=urn:nbn:se:liu:diva-119334.
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Dynapac GmbH is a manufacturer of road construction equipment and has historically been acquired and merged with several companies, resulting in an expansion of their supplier base. Currently, they are experiencing a large supplier base within direct material causing a decrease in the effectiveness and efficiency in the management of the suppliers. Dynapac GmbH therefore wishes to lower the number of suppliers in order to obtain desired effects, such as cost savings, reduction of administrative workload, higher control, higher quality and improved communication with suppliers. The purpose of the study is therefore to develop a methodology that describes all the activities needed to successfully reduce the number of suppliers. At the moment, approximately 80 percent of the total purchasing budget is allocated to only 14 percent of the supplier base. The supplier base can therefore be assumed to consist of a high number of suppliers supplying only a few products with a low turnover. Based on this, it can be concluded that the supplier base includes several opportunities for supplier base reduction. The action of reducing the supplier base is perceived as being in line with the sourcing strategy as well as the business strategy and the needed support is therefore believed to be present in order to succeed with performing supplier base reduction. Based on existing research, a conceptual model for supplier base reduction was created. The current situation at Dynapac GmbH was thereafter analysed in order to enable a customization of the model. Interviews were held to obtain input regarding the model and the activities. The overall view on the model was positive and all activities were considered to be relevant to include. Possible customizations of the activities were discussed during the interviews, which resulted in a customized model consisting of activities with either two types of customizations: (1) defined variables or (2) developed processes. Lastly, the model was validated in a pilot test before it was reconfigured and handed over as a methodology. The finalized methodology included a thorough description on how to conduct supplier base reduction from beginning to end, consisting of 14 activities corresponding to five different phases. The first two phases intend to lay the basis for enabling a reduction of the supplier base and the third phase aims at implementing it in practice. The fourth phase consists of analysing the result of the implementation followed by the last phase with focus on continuous improvement of the supplier base.
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Stander, Roschenka. "The Tax base of South African individuals : an international comparison." Diss., University of Pretoria, 2013. http://hdl.handle.net/2263/41455.
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South Africa changed its tax system from a source-based to a resident-based
system in 2001. This change is in line with tax reforms worldwide. However,
over the last two decades, personal income tax reforms have not resulted in a
noticeable increase in tax revenue worldwide, even though governments find
themselves hard-pressed to maintain or increase their expenditure.
The aim of this study was to compare the South African tax base, which relies
on taxing individuals, with the tax base used in another developing country,
namely India, as well as to those applied in two developed countries, namely
the United Kingdom (UK) and the United States (US). This comparison
identified similarities and differences between the countries, and highlighted
possible improvements to South African tax legislation in order to broaden the
country‟s tax base and potentially increase tax revenues. For the purposes of
the study, a tax base can be defined as the total income of an individual, after
allowing for specified deductions, allowances and other adjustments, on which
tax is levied.
It was determined that the tax base used in South Africa is similar in some
respects to those used in India, the UK and the US. An improvement that South
Africa could adopt is the inclusion of the annual value of house property, as
specified in the Indian tax system. The employment abroad exclusion from
income could be replaced by a foreign-earned income exclusion, as applied in
the US tax system. It was also determined that permitting certain deductions
could in fact increase the tax base, as these deductions could entice taxpayers
to register for tax, therefore increasing tax compliance and ultimately increasing
tax revenue. By adopting any of the advantages of the other tax systems, South
Africa can broaden its tax base and generate additional tax revenue to support
the government‟s needs.Dissertation (MCom)--University of Pretoria, 2013.
gm2014
Taxation
unrestricted
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Lathan, Cary Alice. "Cloud base." Thesis, University of Hawaii at Manoa, 2005. http://hdl.handle.net/10125/6917.
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This is a two-part explanation of the M.F.A. thesis exhibition entitled "Cloud Base" by Cary Lathan. The first part reads as stream of consciousness, a poetic journey that the viewer may experience. The second is an explanation of the poetic journey. The idea from which "Cloud Base" was derived came from two things: the experience of paragliding just below the bases of the clouds and my own personal investigation to understand the core of who I am. "Cloud Base" is comprised of sculptural forms, hand built and made of porcelain. Porcelain in this work represents a symbol of purity, and references the ceramic traditions of the East and West. The story of porcelain is historically rich, and its development through time, space, and society continues. Its use has not come to a final conclusion.iv, 21 leaves
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Väänänen, Joe, and Jonas Ronnby. "Base Camp." Thesis, Högskolan i Borås, Institutionen Ingenjörshögskolan, 2008. http://urn.kb.se/resolve?urn=urn:nbn:se:hb:diva-18814.
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Syftet med detta examensarbete har varit att ta fram handlingar åt räddningsverkets internationella avdelning, så att de på ett mer effektivt och ekonomiskt sätt kan leverera 10 fots sanitetscontainrar på internationella uppdrag. Kravet som ställdes var att de skall ha en livslängd på minst tre år i extrema väderförhållanden samt att de skall vara lätta att bygga om och anpassas för de etniska behoven. I examensarbetet har vi arbetat med ett antal skisser på toalettcontainer och duschcontainer som räddningsverket har fått granska och lämna synpunkter på, ut ifrån dessa skisser har vi arbetat fram ritningar. Rapporten beskriver hur vi har arbetat och jämfört olika material. Hur beräkningar har gått till för att hitta optimala lösningar på isoleringen och ytskikt. Examensarbetet utgör en bra kunskapsdokumentation som bör ligga som grund för nyframställning av sanitetscontainrar. Rapporten innehåller en del terminologi som kräver ett visst byggtekniskt kunnande och vana från ritningsläsning.Uppsatsnivå: C
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Colombo, Sandro de Miranda. "Isolamento, purificação e caracterização de substâncias húmicas isoladas de vermicomposto. Propriedades ácido-base e de complexação com íons Cu(II)." Universidade de São Paulo, 2005. http://www.teses.usp.br/teses/disponiveis/46/46133/tde-23102006-135342/.
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Estudaram-se as propriedades ácido base e de complexação com íons Cu(II) dos ácidos húmico (AH) e fúlvico (AF) extraídos de vermicomposto. O isolamento e a purificação foram realizados de acordo com o método descrito pela Sociedade Internacional de Substâncias Húmicas (IHSS). Estudaram-se as propriedades ácido-base por titulação potenciométrica em meio de KNO3 0,10 mol L-1 utilizando-se funções de Gran modificadas. Caracterizaram-se cinco classes de grupos ionizáveis, constatando-se predominância de grupos carboxílicos sobre grupos fenólicos e amínicos, especialmente para o AF, cuja acidez total foi maior do que a do AH. Estudaram-se as propriedades complexantes com íons Cu(II) nos pH 4, 5 e 6 por titulação potenciométrica com um eletrodo íon-seletivo para Cu(II), adotando-se os métodos de Scatchard e de regressão não linear com a equação de Langmuir para tratamento de dados. Em pH 5 e 6 caracterizaram-se duas classes de sítios de complexação, enquanto em pH 4, apenas uma classe foi caracterizada. De maneira geral, a estabilidade e a capacidade de complexação aumentaram com o pH, indicando a competição de prótons pelos sítios de complexação. Os resultados indicam maior estabilidade e capacidade para a complexação com AH em relação ao AF. Esta tendência foi verificada por funções diferenciais de equilíbrio diferenciais aplicadas em baixos graus de ocupação de sítios.Acid base and complexation with Cu(II) ions were studied for humic (AH) and fulvic (AF) acids extracted from vermicompost. The isolation and purification was performed according the procedure described by the International Humic Substances Society (IHSS). The acid base properties were studied by potentiometric titration in 0,10 mol L-1 KNO3 using modified Gran functions. Five classes of ionizable sites were characterized, showing a predominance of carboxylic over phenolic and aminic groups, especially for AF, which has total acidity larger than the one determined for AH. Complexing properties with Cu(II) ions were studied by potentiometric titration at pH 4, 5 and 6 using Cu(II) ion-selective electrode. Data treatment was performed using the Scatchard method, as well as non-linear regression with the Langmuir equation. At pH 5 and 6, two classes of binding sites were characterized, but at pH 4 only a single complexing site was characterized. Stability and capacity increased with pH, suggesting competition of protons by the binding sites. The results indicate larger stability and capacity for complexation with AH in comparison with AF. This trend was also verified by differential equilibrium functions at low degree of site occupation.
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Choofong, Surakarn. "DNA damage induced by low energy electrons (LEEs)." Mémoire, Université de Sherbrooke, 2016. http://hdl.handle.net/11143/8873.
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Abstract : The major objective of our study is to investigate DNA damage induced by soft X-rays (1.5 keV) and low-energy electrons (˂ 30 eV) using a novel irradiation system created by Prof. Sanche’s group. Thin films of double-stranded DNA are deposited on either glass and tantalum substrates and irradiated under standard temperature and pressure surrounded by a N[subscript 2] environment. Base release (cytosine, thymine, adenine and guanine) and base modifications (8-oxo-7,8-dihydro -2’-deoxyguanosine, 5-hydroxymethyl-2’-deoxyuridine, 5-formyl-2’-deoxyuridine, 5,6-dihydrothymidine and 5,6-dihydro-2’-deoxy uridine) are analyzed and quantified by LC-MS/MS. Our results reveal larger damage yields in the sample deposited on tantalum than those on glass. This can be explained by an enhancement of damage due to low-energy electrons, which are emitted from the metal substrate. From a comparison of the yield of products, base release is the major type of damage especially for purine bases, which are 3-fold greater than base modifications. A proposed pathway leading to base release involves the formation of a transient negative ion (TNI) followed by dissociative electron attachment (DEA) at the N-g lycosidic bond. On the other hand, base modification products consist of two major types of chemical modifications, which include thymine methyl oxidation products that likely arises from DEA from the methyl group of thymine, and 5,6-dihydropyrimidine that can involve the initial addition of electrons, H atoms, or hydride ions to the 5,6-pyrimidine double bond.Résumé: L'objectif majeur de ce projet étude est d'étudier les lésions d'ADN induites par les rayons X mous (1,5 keV) et des électrons de faible énergie (˂ 30 eV) à partir d'un nouveau système d'irradiation créé par le groupe du Pr. Sanche. De minces couches d'ADN double brin sont déposées soit sur du verre ou sur les substrats de tantale. Celles-ci sont irradiées sous une température et pression environnante, mais dans une atmosphère de N[indice inférieur 2]. Les bases relâchées (cytosine, la thymine, l'adénine et la guanine) et les produits de modification de base (8-oxo-7,8-dihydro-2'-désoxyguanosine, 5-hydroxyméthyl-2'-désoxyuridine, 5-formyl-2'-désoxyuridine, 5,6-dihydrothymine et 5,6-dihydrouridine) sont analysés et quantifiés par LC-MS/MS. Nos résultats révèlent un plus grand rendement de dommages dans les échantillons déposés sur le tantale que celles sur le verre. Cette différence peut être expliquée par l’interaction des électrons de faible énergie qui sont photo émis des substrats métalliques. D'après les résultats obtenus, la libération de bases est un produit majeur en comparaison avec la modification de bases. Ceci provient, en particulier, surtout des purines qui libèrent la base a un niveau trois fois plus grand que la modification de la base. Une voie proposée, conduisant à la libération de base, implique la formation d'ions négatifs transitoires (TNI), suivie par l'attachement d'électrons dissociatifs (DEA) à la liaison N-glycosidique. En outre, les produits de modification de base sont composés en deux grands types de modifications chimiques. L’un des produits est l’oxydation du groupe méthyle de la thymine, qui probablement consiste de en d'hydrure (-H[indice supérieur -]) par l'intermédiaire de DEA. Alors que l’autre modification chimique est la formation de 5,6-dihydropyrimidine qui implique l'addition d'hydrure à la double liaison du 5,6-pyrimidine.
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Malik, Aneeqa. "Flexural strength, fracture toughness, and denture tooth adhesion of computer aided milled andprinted denture bases." The Ohio State University, 2019. http://rave.ohiolink.edu/etdc/view?acc_num=osu1563296646075298.
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Stone, Jana E. Petes Thomas D. "Repair of base-base mismatches and four-base loops formed during meiotic recombination in S. cerevisiae." Chapel Hill, N.C. : University of North Carolina at Chapel Hill, 2006. http://dc.lib.unc.edu/u?/etd,687.
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Thesis (Ph. D.)--University of North Carolina at Chapel Hill, 2006.Title from electronic title page (viewed Oct. 10, 2007). "... in partial fulfillment of the requirements for the degree of Doctor of Philosophy in the Curriculum in Genetics and Molecular Biology." Discipline: Genetics and Molecular Biology; Department/School: Medicine.
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Inturi, Rama Brahmam. "Structure, Composition and Pitting Behavior of Sputtered AI Base, Fe Base, and NI Base Alloy Films." The Ohio State University, 1993. http://rave.ohiolink.edu/etdc/view?acc_num=osu1392213869.
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Inturi, Rama Brahmam. "Structure, composition and pitting behavior of sputtered Al base, Fe base, and Ni base alloy films /." The Ohio State University, 1993. http://rave.ohiolink.edu/etdc/view?acc_num=osu1487841975356911.
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Stanley, James, Nicholas R. Perkins, Laura Zander, and James Stanley. "Implementation of activity based cost management aboard base installations." Monterey, California. Naval Postgraduate School, 2004. http://hdl.handle.net/10945/9957.
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Approved for public release; distribution is unlimited.MBA Professional Report
Approved for public release; distribution is unlimited.
This project is a comparative analysis of the implementation process of Activity Based Cost Management of Marine Corps Logistics Base, (MCLB), Albany, and the implementation procedures used aboard MCB Camp Lejeune. Interviews and data gathering were conducted to identify how the respective Business Performance Offices (BPO), plan, implement, monitor, and measure performance of their process to introduce ABCM at the base installation level. We studied the means by which the two organizations allocated resources to this change process and their cost objects. An analysis of benchmarking goals as well as relative barriers to the implementation was conducted to find commonalities between the two, or to determine if those goals and barriers were unique to each organization. It should be highlighted that this project is not intended to identify which, if either, process is superior or if inherent problems or impediments are attributable to internal issues within the respective organizations. The project describes and discusses environmental differences that facilitate or hinder the implementation and offers recommendations to aid in ABCM implementation process procedures.
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Rosengren, Hellman Jonas. "Modular Battery Base Unit : A Method-Based Design Approach." Thesis, KTH, Maskinkonstruktion (Inst.), 2013. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-183421.
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This thesis covers a product development process carried out in collaboration with Ericsson –Enclosure & Power and their development of Radio Base Stations (RBS). As Ericsson expands into new markets, the different customer demands on their support systems increases in number and variation. In order to improve their business structure and still provide a wide array of product solutions, they are currently developing a new modular product family. Today numerous methods for product modularization exist, but there is a lack of experience of using such methods at Ericsson – Enclosure & Power. This thesis is an exploration of what methods could be suitable to use in this context, and how to implement them in a beneficial way. The object of study is the Battery Base Unit (BBU), a mounting base for RBS cabinets that contains a compartment for backup batteries. A methodology is suggested for developing this product in a way that secures a proper modular structure. Part of the methodology consists of standard product development methods such as Quality Function Deployment (QFD), concept selection and prototyping. The other part consist of the modularization methods Function Structure Heuristics and Design Structure Matrix (DSM), that are employed first on functional level before developing concepts and secondly on component-based level while detailing the final concept. The thesis describes how these implementations have been made, how the product have been developed from idea to prototype and the resulting product modularity. The final design is evaluated against the product specification and the benefits and drawbacks of using a formalized modularization process for product development at Ericsson – Enclosure & Power are discussed.Detta arbete handlar om den produktutveckling som utförts i samarbete med Ericsson –Enclosure & Power och deras utveckling av kabinett för radiobasstationer (RBS). Ericssons expansion på nya marknader ökar mängden krav på deras olika supportsystem. För att kunna vidareutveckla sin verksamhet och samtidigt erbjuda ett stort antal produktlösningar utvecklar de för närvarande en ny modulbaserad produktfamilj. Idag finns ett flertal metoder för produktmodularisering men man saknar erfarenhet av att arbeta med sådana metoder på Ericsson– Enclosure & Power. Detta arbete undersöker vilka metoder som är lämpliga att använda i detta sammanhang, och hur man på bästa sätt ska implementera dem. Objektet för denna studie är Batteribasenheten (BBUn) som är ett fundament för montering av RBS kabinettet med ett utrymme för reservbatterier. Ett övergripande tillvägagångssätt föreslås för att säkerställa att utvecklingen av denna produkt inkluderar en bra modulär uppbyggnad. Delvis består tillvägagångssättet av vanliga produktutvecklingsmetoder såsom Quality Function Deployment (QFD), koncepturval och prototyper. I övrigt består det i modulariseringsmetoderna Function Structure Heuristics och Design Structure Matrix (DSM) som används först på funktionsnivå innan konceptgenereringsfasen och därefter på komponentnivå under detaljutvecklingen av det slutliga konceptet. Detta arbete beskriver hur dessa metoder har implementerats, hur produktenhar utvecklats från idé till prototyp samt den resulterande produktmodulariteten. Den slutliga utformningen utvärderas mot den angivna kravspecificeringen och fördelarna och nackdelarna med att använda en formaliserad metod för produktutveckling på Ericsson – Enclosure & Power diskuteras.
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Arnold, Martin. "Zero-Base Budgeting /." Lohmar ; Köln : Eul, 2005. http://deposit.ddb.de/cgi-bin/dokserv?id=2773210&prov=M&dokv̲ar=1&doke̲xt=htm.
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Krikcziokat, Jana Uta. "Peripartaler Säure-Basen-Status bei niedersächsischen Holstein Friesian- Milchkühen." Doctoral thesis, Universitätsbibliothek Leipzig, 2015. http://nbn-resolving.de/urn:nbn:de:bsz:15-qucosa-172844.
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Azidotische Belastungen des Pansens gelten bei Milchkühen besonders in der Frühlaktation als weit verbreitet. Sie werden als subakute Pansenazidosen (SARA) für die häufigen Produktionskrankheiten verantwortlich gemacht.
Ziele : dieser Untersuchungen waren a) die Kontrolle des Säure-Basen-Haushalt (SBH) bei HF- Hochleistungskühen im peripartalen Zeitraum zum Vorkommen von SARA, b) die Prüfung bewährter sowie neuer Methoden zur Pansensaftanalyse, c) die Analyse von SBH-Harnparametern sowie d) die Prüfung möglicher Beziehungen von Stoffwechselparametern im Blut zu SBH-Parametern im Pansensaft.
Versuchsanordnung : In 10 Betrieben Niedersachsens wurden an je 10 Kühen Verlaufsuntersuchungen mit vier Proben/Tier durchgeführt: 1. Trockenstehperiode/Färsen -30 Tage ante partum (d a.p.) bis zur Kalbung; 2. 2 bis 7 Tage post partum (d p.p.); 3. in der Frühlaktation 8 bis 30 d p.p. und 4. in der Mittellaktation 80 bis 150 d p.p. Pansensaft vormittags mit Geishauser- Sonde gewonnen, Blut aus der V. jugularis externa sowie Harn per Blasenkathederisierung. Analysiert wurden im Pansensaft der pH-Wert, die Pufferkapazität als Titrationsbilanz über die Titrationsazidität und - alkalität, die Methylenblauprobe sowie die Sedimentaktivitätszeit (SAT), im Harn der pH-Wert, die Netto-Säure-Basen-Ausscheidung (NSBA) sowie der Basen-Säure-Quotient (BSQ) und im Blutserum Glukose, freie Fettsäuren (FFS), Betahydroxybutyrat (BHB), L-Laktat, Cholesterol, Protein, Albumin, Bilirubin, Harnstoff, Kreatinin, Na, K, Cl, Ca, P, Mg, ALP, ASAT, GLDH sowie die CK.
Ergebnisse: Zwischen Kühen und Färsen wurden bei den gemessenen Parametern keine gesicherten Unterschiede festgestellt. Es gab auch keine Unterschiede zwischen den Betrieben. Die Pansen-pH-Werte bewegten sich von x= 6,8 (6,43/7,0;1./3. Quartil) zu Beginn des Trockenstehens über minimal x = 6,3 (5,9/6,7) 30 bis 60 d p.p. bis x = 6,6 (6,2/6,8) in der Mittellaktation. Sie lagen alle im physiologischen Bereich. 20 Kühe hatten Pansen-pH-Werte von < 5,8, 6 Kühe von < 5,5 und 21 Kühe von > 7,2. Damit kamen die Kühe der SARA-Definition, bezogen auf das einmalige Auftreten von pH-Werten < 5,8 bei einer Kuh, nahe; bezogen auf alle gemessenen Pansen-pH-Werte betrug der Anteil < 5,8 aber nur 9,8 %.
Die Titrationsbilanz war in der Trockensteherperiode ausgeglichen; bei allen drei Kontrollen p.p. bestand ein Basendefizit. Die Pufferkapazität war in der 1. Woche p.p. und in der Frühlaktation vermindert. Panse-pH-Werte und Titrationsbilanz korrelierten sehr eng (r=0,98,p<0,001).
Die Methylenblauprobe war a.p. mit x = 3:37 (2:22/4:59) Minuten am längsten, in der Mittellaktation mit 3:01 (2:25/4:30) Minuten am kürzesten und ingesamt physiologisch. Es gab keine signifikanten Unterschiede zwischen den einzelnen Kontollzeiträumen. Die SAT war physiologisch und schwankte zwischen zwei und fünf Minuten ohne signifikante Unterschiede zwischen den Entnahmezeiträumen.
Im Harn lagen die NSBA mit x = 70 mmol/l (20/122 = 1./3.Quartil) und der BSQ mit x = 2,2 (1,6/2,8) nur bei den Frischmelkern unter den unteren Grenzwerten und deuteten die Gefahr von SARA an. Der Harn-pH-Wert war mit x = 7,98 (7,7/8,2) physiologisch.
Von der Gesamtheit alle NSBA-Werte waren 37% < 83 mmol/l sowie 28,9% < 25 mmol/l; beim BSQ waren es 52,6% < 2,5 sowie 27,4% < 1,5. Die für die NSBA, den BSQ und den Harn-pH-Wert berechneten Sensivitäten und Spezifitäten für einen Pansen-pH-Wert < 5,8 liegen mit 44,8% und 64,5% (NSBA), 55,8% und 47,9% (BSQ) sowie 2,3% und 97% (Harn-pH-Wert) unter den diagnostischen Erfordernissen.Sie können somit keine sicheren Rückschlüsse auf den Pansenzustand geben.
Bei den Blutbefunden wurden Kühe mit Pansen-pH-Werten < 5,8 (SARA) und >5,8 gegenüber gestellt. Die Korrelationskoeffizienten, die Sensitivität und die mittels Receiver-Operating-Characteristics Analysen ermittelten Flächen unter der Kurve zwischen Pansen-pH-Wert und den Blutparametern waren niedrig ( p> 0,05).
Schlussfolgerung: Hochleistende HF-Kühe haben peripartal nicht zwangsläufig eine SARA. Die Titrationsbilanz ergänzt den Pansensaft-pH-Wert, ist routinemäßig aber nicht nötig. Im Harn liegen die NSBA und BSQ häufiger unter den Grenzwerten und korrelieren nicht gesichert mit dem Pansen-pH-Wert. Auch Blutparameter erlauben keine sichere Aussage über den Pansenzustand. Die Diagnose von SARA muss mit direkter Messung des Pansen-pH-Wertes gestellt werden.
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Hanna, Brandon Holbrook. "Modeling and Testing of Bistable Waterbomb Base Configurations." BYU ScholarsArchive, 2014. https://scholarsarchive.byu.edu/etd/4336.
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Origami is making an impact in engineering as solutions to problems are being found by applying origami principles (eg. flat-foldability) and using specific crease patterns as inspiration. This thesis presents an in-depth analysis of a particular origami fold -- the waterbomb base -- to facilitate its use in future engineering problems. The watebomb base is of interest due to its familiarity to the origami community, simple topology (can be made by folding a single sheet of paper four times), scalability, generalizability, and interesting kinetic behavior. It can behave as a nonlinear spring as well as a one- or two-way bistable mechanism. This thesis presents models of the kinetic behavior of the traditional waterbomb base as well as some non-traditional variants to be used as tools in future development of waterbomb-base-inspired mechanisms. In all cases considered here, developability as well as rotational symmetry in both the geometry and motion of the mechanisms are assumed. The thesis provides an introduction to origami and reviews some of the ways in which it has been studied and applied in engineering fields. The waterbomb base is also presented as a specific origami fold with practical application potential. Models for the behavior of the traditional waterbomb base are introduced and its potential usefulness as a testbed for actuation methods is discussed. Models are developed for its kinematic and bistable behavior, including the forces needed to transition between stable states. These models are validated by comparison to physical prototype testing and finite element analysis. The thesis introduces the generalized waterbomb base (WB) and generalized split-fold waterbomb base (SFWB). The WB maintains the pattern of alternating mountain and valley folds around the vertex but in this generalized case any even number of folds greater than or equal to 6 is allowed. An SFWB is created by splitting each fold of a WB into two “half folds”, effectively doubling the number of folds and links but halving the deflection at each fold. The same models that were developed for the traditional waterbomb base are developed for the WB and the SFWB and a few potential applications are discussed.
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Dehainsala, Hondjack. "Explicitation de la sémantique dans les bases de données : base de données à base ontologique et le modèle OntoDB." Poitiers, 2007. http://www.theses.fr/2007POIT2270.
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Une base de données à base ontologique (BDBO) est une base de données qui permet de représenter à la fois des données et l’ontologie qui en définit le sens. On propose dans cette thèse un modèle d’architecture de BDBO, appelé OntoDB, qui présente deux caractéristiques originales. D’une part, comme dans les bases de données usuelles, chaque entité est associée à un schéma logique qui définit la structure commune de toutes ses instances. Notre approche permet donc d’ajouter, a posteriori, une ontologie à une base de données existante pour indexer sémantiquement son contenu. D’autre part, le méta-modèle (réflexif) du modèle d’ontologie est lui-même représenté. Cela permet de supporter les évolutions du modèle d’ontologie. OntoDB a été validé par un prototype. Le prototype a fait l’objet d’une évaluation de performance qui a montré que l’approche proposée permettrait de gérer des données de grande taille et supporter beaucoup mieux le passage à l'échelle que les approches existantesAn Ontology–Based DataBase (OBDB) is a database which allows to store both data and ontologies that define data meaning. In this thesis, we propose a new architecture model for OBDB, called OntoDB. This model has two main original features. First, like usual databases, each stored entity is associated with a logical schema which define the structure of all its instances. Thus, our approach provides for adding ontology to existing database for semantic indexation of its content. Second, meta-model of the ontology model is also represented in the same database. This allows to support change and evolution of ontology models. The OntoDB model has been validated by a prototype. Performance evaluation of this prototype has been done and has shown that our approach allows to manage very large data and supports scalability much better than the previously proposed approaches
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Powers, Robert C. "Base Realignment and Closure (BRAC) 2005 : Congressional dialogue and decision." Thesis, Monterey, Calif. : Springfield, Va. : Naval Postgraduate School ; Available from National Technical Information Service, 2003. http://library.nps.navy.mil/uhtbin/hyperion-image/03Jun%5FPowers.pdf.
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Thesis (M.S. in Leadership and Human Resource Development)--Naval Postgraduate School, June 2003.Thesis advisor(s): Richard B. Doyle, Gail F. Thomas. Includes bibliographical references (p. 77-108). Also available online.
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Trimmel, Stefan. "Evaluation of Model-Based Testing on a Base Station Controller." Thesis, Linköping University, Department of Computer and Information Science, 2008. http://urn.kb.se/resolve?urn=urn:nbn:se:liu:diva-12059.
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This master thesis investigates how well suited the model-based testing process is for testing a new feature of a Base Station Controller. In model-based testing the tester designs a behavioral model of the system under test, or some part of the system. This model is then given to a test generation tool that will analyze the model and produce interesting test cases. These test cases can either be run on the system in an automatic or manual way depending on what type of setup there is.
In this report it is suggested that the behavioral model should be produced in as early a stage as possible and that it should be a collaboration between the test team and the design team.
The advantages with the model-based testing process are a better overview of the test cases, the test cases are always up to date, it helps in finding errors or contradictions in requirements and it performs closer collaboration between the test team and the design team. The disadvantages with model-based testing process are that it introduces more sources where an error can occur. The behavioral model can have errors, the layer between the model and the generated test cases can have errors and the layer between the test cases and the system under test can have errors. This report also indicates that the time needed for testing will be longer compared with manual testing.
During the pilot, when a part of a new feature was tested, of this master thesis a test generation tool called Qtronic was used. This tool solves a very challenging task which is generating test cases from a general behavioral model and with a good result. This tool provides many good things but it also has its shortages. One of the biggest shortages is the debugging of the model for finding errors. This step is very time consuming because it requires that a test case generation is performed on the whole model. When there is a fault in the model then this test generation can take very long time, before the tool decides that it is impossible to cover the model.
Under the circumstances that the Qtronic tool is improved on varies issues suggested in the thesis, one of the most important issues is to do something about the long debugging time needed, then the next step can be to use model-based testing in a larger evaluation project at BSC Design, Ericsson.
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Chamayou, Anne-Christine [Verfasser], and Christoph [Akademischer Betreuer] Janiak. "Chiral metal-Schiff base complexes = Chirale Metal-Schiff-Base-Komplexe." Freiburg : Universität, 2011. http://d-nb.info/1115490567/34.
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Muñoz-Baca, Guadalupe Adiba Michel. "Stockage et exploitation de dossiers médicaux multimedia au moyen d'une base de données généralisée Projet Tigre /." S.l. : Université Grenoble 1, 2008. http://tel.archives-ouvertes.fr/tel-00324082.
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Jensen, Svend Borup. "Schiff base calixarenes." Thesis, University of the West of Scotland, 2002. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.246345.
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Four different synthetic routes to the sub-target, the p-tert-butylcalix[4lethylamine (6a) from thep-tert-butylcalix[4]arene (1a) have been examined. The best one was a 5-step synthesis, which gave an overall yield of65%. p-tert-Butylcalix[6]ethylamine (6b) and p-tert-butylcalix[8]ethylamine (6c) were synthesised from their respective p-tertbutylcalixarenes by the same route as the p-tert-butylcalix[4]ethylamine (6a). The three different amines (compound (6a), (6b) and (6c)) were used in 14 different Schiff -base type reactions which resulted in six Schiff-base compounds which were fully characterised by NMR, IR, FAB-ms and UV-vis. Insertion studies of the Schiff-base compounds along with template synthesis of the Schiff-base compounds were also attempted. The uptake of solid metal salt by the Schiff-base compounds in solution was examined by UV-vis spectroscopy. One of the Schiff -base compounds synthesised was the ferrocenecarboxaldehyde Schiff-base calix[4]arene (22a). An electrochemical analysis of this compound was undertaken to assess whether if it could be used as a sensor for metal ions. Molecular modelling of the Schiff-base compound and a crystal structure ofp-tert-butylcalix[4]ethylnitrile (8) are also presented in the thesis
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Amghar, Youssef. "Base d'objets documentaires." Lyon, INSA, 1989. http://www.theses.fr/1989ISAL0070.
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Les Modèles Orientés Objets (MOO) ont permis d'aborder autrement les problèmes de conception et d'analyse des applications telles que la documentation. Dans ces modèles, l'objet est le concept unique représentant une "entité" du monde réel. Dans le domaine de la documentation on parle souvent d'objet complexe multi media. Il est muni de connaissances et d'un comportement appelés souvent "propriétés" (attributs et méthodes). Les objets ayant en commun plusieurs propriétés forment une classe d'objets. Tout objet réel possédant ces propriétés est une instance de classe. Le MOO développé dans cette thèse permet grâce à l'introduction d'un nouveau concept "le Méta-G-Objet", de modéliserune collection non finie de modèles de documents codés selon la norme ODA. Le Méta-G-Objet est vu comme l'unification du concept de classe et du concept de méta-classe de Smalltalk considérés chacun comme insuffisant et mal adapté au domaine de la documentation. Le partage d'objets induit dans le graphe des modèles est formalisé. La manipulation des objets documentaires s'est faite à l'aide de Smalltalk dont les principes permettent l'implantation du modèle sans grande difficulté. L'absence de gestion des objets persistants dans Smalltalk, a conduit à l'élaboration d'un modèle de stockage. Trois bases ont été nécessaires : la base des attributs d'objets, la base des méthodes et la base des contenus. L'architecture retenue, à savoir un serveur de documents et des postes de travail pour chaque image Smalltalk a nécessité l'étude de la gestion des accès concurrents.
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Hunter, Paul Carleton University Dissertation Engineering Electrical. "Knowledge base modification." Ottawa, 1991.
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Freire, Clarissa Dourado. "Análise dos recursos em incubadoras de empresas de base tecnológica." Universidade Federal de São Carlos, 2016. https://repositorio.ufscar.br/handle/ufscar/8485.
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This research aimed to identify and analyze what are the features supported by the incubators of technology-based companies for the incubated companies and analyze what is the importance of these resources for the operation and the incubators and TBCs. As theoretical guidelines were adopted prospects of Resource Based View, which addresses the survival of businesses based on their internal resources and Resource Dependence, which aims to understand the organizational interdependence considering the external environment of organizations. To this end, the triangulation of methods was adopted, with quantitative and qualitative approach, with the use of survey and multi case study. The case study was made with the implementation of semi structured interviews with Supera incubators, Softex and Cinet / Softnet, all in the state of São Paulo and the survey was made the basis of a questionnaire based on the Likert Scale applied to a sample 30 technology-based companies, drawn from a universe of 120 companies that are incubated by the interviewed incubators. For the processing of data were used the descriptive statistics and regression analysis based perspective of total factor productivity, which aims to identify which affects the income of a business and that is not directly related to production factors, with proposing two options, the first being that the resources do not affect the revenue of TBCs and the second is that affect revenue. Even for the case study was made the content analysis. From the survey data it was possible to identify five categories of resources, physical, financial, technological, organizational and human, and further confirm the hypothesis that resources affect the performance of TBCs, and the most representative are the physical resources. It was also observed that the incubators seek ways to provide the resources required for TBCs, are the improvement of its internal resources, as evaluates the resource-based view, are the relationships with other organizations, through the inter-organizational relationships, as recommended by the dependence resources. And TBCs seek in the incubation program a way to deal with the adversities of the environment and the market as well as additional resources.
Esta pesquisa teve como objetivo identificar e analisar quais são os recursos suportados pelas incubadoras de empresas de base tecnológica para as empresas incubadas bem como analisar qual a importância desses recursos para o funcionamento e das incubadoras e das EBTs. Como diretriz teórica foram adotadas as perspectivas da Visão Baseada em Recursos, que aborda a sobrevivência das empresas com base em seus recursos internos e da Dependência de Recursos, que tem como objetivo compreender a interdependência organizacional considerando o ambiente externo das organizações. Para tal, foi adotado a triangulação de métodos, com abordagem quantitativa e qualitativa, com a utilização de survey e multi estudo de caso. O estudo de caso foi feito com a realização de entrevista semi estruturada com as incubadoras Supera, Softex e Cinet/Softnet, todas no interior do Estado de São Paulo e o survey foi feito à partir de um questionário baseado na Escala Likert aplicado em um amostra de 30 empresas de base tecnológica, extraídas de um universo de 120 empresas que estão incubadas pelas incubadoras entrevistadas. Para o tratamento dos dados foram utilizadas as técnicas de estatística descritiva bem com análise de regressão baseada perspectiva da Produtividade Total dos Fatores, que visa identificar o que afeta a receita de uma empresa e que não está relacionado diretamente com os fatores de produção, com a proposição de duas hipóteses. Ainda para o estudo de caso foi feita a análise de conteúdo. À partir do levantamento dos dados foi possível identificar cinco categorias de recursos, físicos, financeiros, tecnológicos, organizacionais e humanos, e ainda confirmar a hipótese de que os recursos afetam no desempenho das EBTs, sendo que os mais representativos são os recursos físicos. Observou-se ainda que as incubadoras buscam formas de oferecer os recursos demandados pelas EBTs, sejam pela melhoria dos seus recursos internos, como avalia a visão baseada em recursos, sejam pelas relações com outras organizações, através das relações interorganizacionais, como preconiza a dependência de recursos. E as EBTs buscam no programa de incubação uma forma de lidar com as adversidades do ambiente e do mercado bem como complementar seus recursos.
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Mbaiossoum, Bery Leouro. "Conception physique des bases de données à base ontologique : le cas des vues matérialisées." Thesis, Chasseneuil-du-Poitou, Ecole nationale supérieure de mécanique et d'aérotechnique, 2014. http://www.theses.fr/2014ESMA0014/document.
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La forte volumétrie des données décrites par des ontologies a conduit à la naissance des basesde données à base ontologique (BDBO). Plusieurs communautés se sont intéressées à cette technologieet ont proposé des solutions pour persister les données sémantiques dans des SGBD.Parallèlement, la conception physique est devenue une étape primordiale dans le cycle de viede conception des bases de données (BD). Durant cette phase, des structures d’optimisation sontsélectionnées. Si de nombreux travaux ont été menés sur la conception physique dans le contexte desBD traditionnelles, peu se sont intéressés à la conception physique dans les BDBO qui est pluscomplexe. Cette complexité est due à la diversité des BDBO qui porte sur des formalismes supportés,des modèles de stockage et des architectures utilisés.Pour guider la sélection des structures d’optimisation et mesurer sa qualité, nous avonsdéveloppé un modèle de coût pour estimer le coût des requêtes dans les BDBO. Les résultatsthéoriques sont confrontés avec les résultats pratiques obtenus à partir de six BDBO dont troisindustrielles (Oracle et IBM SOR, DB2RDF) et trois académiques (Jena, Sesame et OntoDB du LIASde l'ISAE-ENSMA). Ce modèle de coût a été utilisé dans le processus de sélection des vuesmatérialisées. Nous avons proposé deux approches de matérialisation : une approche conceptuelle oùla sélection des vues matérialisées est faite sur les classes et les propriétés utilisées par les requêtes etune approche simulée où la sélection prend en compte la diversité des BDBO. Des expérimentationsont été conduites pour évaluer la qualité de nos approches en les confrontant avec les principauxtravaux existantsThe high volume of data described by ontologies led to the creation of Ontology-BasedDatabase (OBDB). Many communities are interested in this technology and have proposed solutionsto persist semantic data in DBMS.Meanwhile, the physical design has become an essential step in the life cycle of databasedesign, in which optimization structures are selected. While many studies have been conducted on thephysical design in the context of traditional databases, few have focused on the physical design inOBDB which is more complex. This complexity is due to the diversity of OBDB which focuses onformalisms supported, storage models and architectures used.To guide the selection of optimization structures, we have developed a cost model to estimatethe cost of queries in OBDB. The theoretical results are compared with the practical results obtainedfrom six OBDB including three industrial (Oracle, IBM SOR and DB2RDF) and three academic (Jena,Sesame and OntoDB of the LIAS Lab of ISAE-ENSMA). This cost model was used in thematerialized views selection process. We proposed two approaches of materialized views selection: aconceptual approach where the selection of materialized views is made on the classes and propertiesused by queries and a simulated approach where the selection takes into account the diversity ofOBDB. Experiments were conducted to evaluate the quality of our approaches and compare them withthe main existing work
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Lupiani, Ruiz Eduardo. "Mantenimiento de bases de casos temporales= Temporal case-base maintenance." Doctoral thesis, Universidad de Murcia, 2014. http://hdl.handle.net/10803/283550.
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El Razonamiento Basado en Casos (CBR de sus siglas en inglés, Case-Based Reasoning) es una metodología para la resolución de problemas por analogía con problemas ya resueltos. La base del CBR son los casos, piezas independientes de conocimiento donde queda representada la asociación entre un problema y su solución, donde los casos se agrupan en una base de conocimiento conocida como base de casos. La cantidad de casos puede ser una señal de la experiencia de un sistema CBR resolviendo problemas del dominio. Sin embargo, tener bases de casos grandes no garantiza que el sistema CBR los resuelva mejor. Al contrario, una acumulación de muchos casos podría deteriorar el tiempo de respuesta del proceso de razonamiento y, en ciertos escenarios, afectar negativamente la correcta resolución de ciertos tipos concretos de problemas. Las tareas de Mantenimiento de Base de Casos (CBM) tienen entre sus objetivos la reducción del número de casos dentro de la base de casos sin empeorar la capacidad de resolución de problemas de proceso de razonamiento CBR. El CBM es esencial cuando CBR es utilizado en dominios de problemas dependientes del tiempo, donde el CBR tiene que incluir técnicas de representación temporal en las descripciones de sus casos. No obstante, dichas representaciones temporales implican estructuras de casos más complejas y hacen más difícil y costoso cuantificar la similitud entre casos. Esto implica tener una base de casos lo más pequeña posible, de forma que no se degrade las capacidades de resolución de problemas. Sin embargo, hasta cuanto nosotros sabemos, no se han propuesto algoritmos CBM para realizar mantenimiento en bases de casos temporales. Por ello, en esta tesis nosotros proponemos: (i) un método de evaluación para estudiar los efectos de la utilización de los algoritmos CBM en el rendimiento del sistema CBR; (ii) un marco de trabajo temporal para ser utilizado en sistema CBR temporal; y (iii) un conjunto a de algoritmos CBM temporales. Además, también proponemos un algoritmo CBM basado en una optimización multiobjetivo. Por último, nuestras propuestas e hipótesis han sido probadas con datos de un sistema de monitorización de personas mayores en el hogar. En particular, los experimentos llevados a cabo apoyan la idoneidad de nuestras propuestas de evaluación para estudiar las consecuencias de utilizar CBM en un sistema CBR. Además, los experimentos también apoyan nuestra hipótesis inicial de que es posible utilizar exitosamente las tareas de mantenimiento a bases de casos temporales utilizando nuestras propuestas de algoritmos temporales.Case-Based Reasoning (CBR) is a problem-solving methodology that solves problems by analogy with previously solved problems. The basis of CBR is a case, an independent piece of knowledge that associates the description of a problem with its solution, where cases are retained in a knowledge-source known as a case-base. The amount of cases may be a sign of the expertise of the CBR system for solving the problem domain. However, having a large case-base does not guarantee an improvement of the problem-solving capability. On the contrary, an accumulation of many cases may lengthen the response time of the reasoning process and, in certain scenarios, negatively affect the correct solution of certain types of problem. Case-Base Maintenance (CBM) tasks reduce the number of cases within the case-base without affecting the problem-solving accuracy of the reasoning process. CBM is essential when CBR is used in time dependant domains where CBR has to include temporal representation techniques in case descriptions. Nevertheless, temporal representation implies more complex case structures and makes it more difficult and costly to quantify the similarity between cases. This means the case-base should be as small as possible without harming its problem solving capabilities. However, to our knowledge, no algorithm has been proposed to perform CBM in case-bases with temporal cases. In this thesis, we propose: (i) an evaluation method to study the effects of using CBM algorithms on CBR performance; (ii) a temporal framework for use in temporal CBR; and (iii) a set of temporal CBM algorithms. In addition, a new CBM algorithm based on a multiobjective optimization evolutionary approach is proposed. Lastly, our proposals and hypotheses are tested with data of elderly people monitored at home. In particular, the experiments conducted confirm the suitability of our proposed evaluation method to study the consequences of using CBM. Moreover, the experiments also support our initial hypothesis that it is possible to successfully perform a maintenance task on temporal case-bases with the proposed temporal CBM algorithms.
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Salviato, Julis Leonan. "Sistema de numeração binário: dos computadores à sala de aula." Universidade de São Paulo, 2018. http://www.teses.usp.br/teses/disponiveis/55/55136/tde-31072018-090732/.
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O objetivo deste trabalho é mostrar que variados cálculos tornam-se mais fáceis de ser efetuados realizando operações com números escritos na base dois, com o pressuposto de que se esteja habituado a números nessa base, promovendo um aprofundamento na compreensão das bases e das propriedades utilizadas nas operações. Retomaremos alguns dos principais sistemas de numeração e apresentamos os cálculos de adições, subtrações, multiplicações e divisões com números escritos na base binária. Resgataremos também um antigo, porém eficiente, algoritmo para a extração de raízes quadradas.The purpose of this work is to show that various calculations become easier to perform by performing operations with numbers written in base two, with the assumption that one is accustomed to numbers in this base, promoting a deeper understanding of the bases and properties used for these operations. We will return to some of the major numbering systems and present the calculations of sums, subtractions, multiplications, and divisions with numbers written on the binary basis. We will also rescue an old but efficient algorithm for the extraction of square roots.
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Kerhervé, Brigitte. "Vues relationnelles : implantation dans les systèmes de gestion de bases de données centralisés et répartis." Paris 6, 1986. http://www.theses.fr/1986PA066090.
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Nous décrivons les choix qui ont été faits dans le prototype SABRE. Nous analysons par la suite l'implantation de vues concrètes qui correspondent à la matérialisation des vues relationnelles. Nous montrons que ces vues concrètes permettent de définir un nouveau type de SGBD réparti où la définition et le stockage des données sont faits en fonction des interrogations sur les sites distants, de manière à maximiser les interrogations locales. Nous décrivons et analysons les mécanismes nécessaires à l'implantation d'un tel type de SGBD réparti par vues concrètes, notamment du point de vue des mises à jour.
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Moldestad, Dag Anders. "Some aspects of ski base sliding friction and ski base structure." Doctoral thesis, Online version, 1999. http://bibpurl.oclc.org/web/20254.
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Andrade, Jony. "Determinação dos parâmetros cinéticos para propelentes base simples e base dupla." Instituto Tecnológico de Aeronáutica, 2006. http://www.bd.bibl.ita.br/tde_busca/arquivo.php?codArquivo=322.
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Compostos como a nitrocelulose e a nitroglicerina são muito utilizados na obtenção de propelentes, devido ao alto poder energético e da baixa emissão de fumaça. Estes compostos deram origem aos propelentes conhecidos como base simples e base dupla, muito utilizados em sistemas de propulsão mísseis e foguetes. Em decorrência da alta sensibilidade destes compostos a estímulos térmicos, a utilização de agentes estabilizadores é necessário para resguardar suas propriedades químicas e prevenir a decomposição autocatalítica. Este trabalho visa a determinação dos parâmetros cinéticos de decomposição térmica, utilizando as técnicas termoanalíticas, e a avaliação da cinética de perda de estabilizante, por técnicas de envelhecimentos e análise cromatográfica. O modelo cinético do deslocamento de pico mostrou ser rápido e eficiente para a obtenção dos parâmetros de Arrhenius, porém os dados obtidos não permitem a avaliação do tempo de vida útil do propelente. A utilização da cinética de consumo de estabilizante oferece uma boa informação, por que permite prever a decomposição autocatalítica. Pode-se destacar também que a avaliação do tempo de vida útil de materiais energéticos quando realizada por um conjunto de técnica, tais como Bergman & Junk, de armazenamento, Alemã e as outros utilizadas neste trabalho, oferece uma maior base de dados para assegurar as propriedades químicas destes materiais ao longo de grandes períodos de armazenamento.
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Gautam, Biraj. "Guideline for using local material for roadway base and sub-base." To access this resource online via ProQuest Dissertations and Theses @ UTEP, 2008. http://0-proquest.umi.com.lib.utep.edu/login?COPT=REJTPTU0YmImSU5UPTAmVkVSPTI=&clientId=2515.
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Cabanillas, Rincón Elio Marcelo, and Regalado Víctor Enrique Chilque. "Sistema de control y asignación de aplicaciones automáticas en el proceso de matrícula." Universidad de San Martín de Porres. Programa Cybertesis PERÚ, 2010. http://cybertesis.usmp.edu.pe/usmp/2010/cabanillas_em/html/index-frames.html.
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Muestra como mejorar el servicio prestado por Microtec, garantizando la disponibilidad del hardware y software que se utiliza en el dictado de los cursos haciendo que se interactue con el sistema de matricula para reconocer y permitir el acceso al alumno a través de las computadoras del laboratorio de FIA - DATA a los programas que requiera según su especialidad.
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Ferreira, Manuel Joaquim Monteiro. "O DBA atual: desafios e soluções." Master's thesis, Universidade de Évora, 2018. http://hdl.handle.net/10174/25448.
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A área de sistemas da Liberty Seguros S.A., é responsável, entre tantas outras plataformas, pela gestão das bases de dados Oracle do negócio em todos os seus vetores de intervenção, desde a segurança ao desempenho.
Atualmente no mercado e não apenas na nossa estrutura é solicitada a disponibilidade do serviço em modo 24 horas por dia, 7 dias por semana. Apesar de existirem equipas que acompanham o funcionamento da plataforma em permanência, essas equipas não têm todas as competências necessárias nem as ferramentas para efetuarem uma série de operações à distância. No âmbito em questão e fazendo eu parte desta equipa, pretendi criar uma aplicação que responda aos desafios que esta gestão coloca no dia-a-dia à nossa equipa e simultaneamente introduzir a possibilidade de alargar a solução a outras plataformas de base de dados; Abstract:
The infrastructure team of Liberty Seguros S.A. is responsible, among many other platforms, for managing the Oracle databases supporting the business, in all its vectors of intervention, from security to performance.
Currently in the market, and not only in our structure, the demand for availability of the service requested is 24 hours a day, 7 days a week. Although there are teams that accompany the operation of the platform at all times, these teams do not have all the necessary skills nor the tools to perform a series of remote operations. In the scope in question and being part of this team, we intend to create an application that responds to the challenges that this management puts in our day-to-day basis and simultaneously introduce the possibility of extending the solution to other database platforms.
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Zduniak, Pawel Piotr. "Political change in Europe and the future of United States military presence in Germany." Thesis, Monterey, California. Naval Postgraduate School, 2005. http://hdl.handle.net/10945/1884.
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This thesis analyzes American basing structure in Germany, in a new political environment at the beginning of the 21st century. The end of the Cold War changed the political and strategic situation in Europe and the substance of American military presence in Europe. The War on Terrorism suggests that the current threats are dynamic and unpredictable and the idea of a permanent U.S. basing structure in the heart of Europe should be reconsidered. Specifically, this thesis describes the reasons for restructuring the large and expensive base structure in Germany and the impact of American withdrawal to the German society. Moreover, this thesis presents new challenges and opportunities for American military presence in other parts of European continent. Finally, this thesis reviews the development of U.S. policy concerning present and future base structure in Europe.
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Zolezzi, Alberto, and Percy Mayta-Tristan. "Sentando las bases para la indización: cambios en las instrucciones para los autores de Acta Médica Peruana." Colegio Médico del Perú (CMP), 2016. http://hdl.handle.net/10757/611312.
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Argumedo, Solorzano Luis Alberto. "Carpeta asfáltica reciclada y base granular reciclada para la conformación de una subbase granular óptima en la Av. Próceres del distrito de Chilca, provincia de Huancayo." Bachelor's thesis, Universidad Continental, 2019. http://repositorio.continental.edu.pe/handle/continental/5925.
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El presente estudio tiene como objetivo encontrar las ventajas de la utilización de carpeta
asfáltica reciclada y base granular reciclada para la conformación de una subbase
granular óptima, en la Av. Próceres del Distrito de Chilca, Provincia de Huancayo; esto
con el fin de mejorar el nivel de serviciabilidad de la avenida en mención la cual se
encuentra en condiciones sub estándares; a su vez este estudio pretende plantear una
alternativa que genere una reducción de costos en la construcción de un nuevo pavimento
flexible y un menor impacto ambiental.
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Webster, Sean T. "National Patterns and Community Impacts of Major Domestic U.S. Military Base Closures, 1988-present." Thesis, University of North Texas, 2004. https://digital.library.unt.edu/ark:/67531/metadc4560/.
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This thesis analyses major U.S. military bases closed by the Base Realignment and Closure (BRAC) Commission since 1988. The study focuses on geographic patterns of pre-existing versus BRAC bases, statistical attributes, environmental restoration, and reuse of bases. Comparative case studies supplement the analysis, highlighting rural versus urban location, success versus failure, politics, conflict, and local versus national goals. Thesis findings are that: 92 bases closed versus 97 commonly published; a fairly even national closure pattern occurred, indicating Commission efforts to achieve equity, except for three closure clusters indicating efforts to consolidate functions in some regions and leave others; base reuse, while commonly perceived negatively, has been positive in most cases; the BRAC process is becoming more efficient, such that allowed years between BRAC closure decisions and base closures should be reduced from six to three years to benefit both communities and the Defense Department.
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GALDINO, GABRIEL S. "Influência do PR na microestrutura e propriedades elétricas em ligas à base de LaPrMgAlMnCoNi utilizadas em baterias de Ni-HM." reponame:Repositório Institucional do IPEN, 2011. http://repositorio.ipen.br:8080/xmlui/handle/123456789/10080.
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Made available in DSpace on 2014-10-09T12:34:31Z (GMT). No. of bitstreams: 0Made available in DSpace on 2014-10-09T14:00:26Z (GMT). No. of bitstreams: 0
Dissertação (Mestrado)
IPEN/D
Instituto de Pesquisas Energeticas e Nucleares - IPEN-CNEN/SP
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Marotta, Angela. "Résines thermodurcissables et nanocomposites époxydes renouvelables à base de furanne pour les applications de revêtement." Thesis, Université Côte d'Azur (ComUE), 2019. http://www.theses.fr/2019AZUR4003/document.
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La recherche scientifique concernant les polymères biosourcés augmente rapidement pendant les dernières années, poussée par des croissantes préoccupations écologiques et économiques, ainsi que par l'incertitude sur la disponibilité future de ressources pétrochimiques limitées. Durabilité est un mot-clé de ce processus. Dans ce cadre, des produits respectueux de l'environnement, y compris des molécules et des additifs eco-compatibles, sont maintenant recherchés pour remplacer les polymères à base de pétrole par ceux dérivés de matières premières naturelles.Les résines époxydes sont des polymères thermodurcissables très polyvalents, extrêmement résistants à la corrosion, à l'humidité et aux produits chimiques, avec une bonne force d'adhérence à la plupart des matériaux et un faible retrait lors du durcissement. En raison de leurs températures de transition vitreuse élevées et de leur excellente résistance mécanique, les résines époxydes sont largement utilisées dans une large gamme d'applications, telles que l'électronique, les adhésifs structuraux, les composites pour l'aérospatiale et les revêtements protecteurs.Actuellement, plus des deux tiers des résines époxydes sont à base de diglycidyl éther de Bisphénol A. Dans cette industrie, la tendance à remplacer les matériaux dérivés du pétrole par des matériaux biosourcés est également liée à la nécessité de remplacer le bisphénol A (BPA), une molécule controversée, reconnu comme un perturbateur endocrinien et une substance reprotoxique. En particulier en application comme revêtement, l'utilisation de BPA présente un risque pour les utilisateurs d'aliments et de boissons conditionnés dans des récipients traités avec des résines époxydes. Les effets de la contamination du corps humain causée par le BPA sont le diabète, maladies cardiovasculaires, modification des enzymes hépatiques et les lésions de l'appareil reproducteur. Pour ces raisons, cette molécule a été interdite dans de nombreux pays pour la fabrication de produits pour enfants, ainsi qu'en France et au Canada de tous les matériaux en contact direct avec les aliments. La nécessité de développer de nouvelles résines époxy est donc urgente.Les molécules bio-dérivées développées depuis maintenant présentent des structures chimiques les plus diverses, chacune d’elles produisant des propriétés différentes des polymères finaux. Les caractéristiques particulières des résines époxydes sont liées à la structure aromatique de ses composants. Les molécules aromatiques présentes dans les matières premières naturelles proviennent principalement de la lignine, un des principaux constituants des parois cellulaires naturelles. Cependant, pour extraire des fragments aromatiques de la lignine, des procédés difficiles et consommateurs d’énergie sont nécessaires. Un substitut précieux des molécules aromatiques, facilement récupérables du glucose, sont les molécules furaniques ; leur validité a été étayée par plusieurs études.À la lumière de ce qui précède, les travaux présentés ici sont focalisés sur la production de résines époxyde à base de furane comme substitut potentiel de DGEBA dans l’industrie du revêtement de boîtes de conserve. Le cycle complet du matériau a été étudié : des synthèses de monomères époxydes furaniques ont été proposées, puis des thermodurcis époxydes ont été obtenus et caractérisés à la fois dans leurs propriétés chimiques et physiques (étude de la cinétique de durcissement, des propriétés mécaniques et thermiques). En outre, l’application des matériaux thermodurcissables époxydes proposés comme revêtement interne des boîtes de conserve a été testéeResearch on bio-based polymers is rapidly increasing in last years, pushed by growing environmental and economic concerns, as well as by the uncertainty about future availability of finite petrochemical resources. Sustainability is a keyword in this process. In this frame, products that are respectful towards the environment, including eco-compatible building blocks and additives, are now researched to replace petroleum-based polymers with those derived from naturally occurring feedstocks. Epoxy resins are very versatile thermosetting polymers, extremely resistant to corrosion, moisture and chemicals, with good adhesive strength toward most materials (wettability) and low shrinkage upon curing. Due to their high glass transition temperatures and excellent mechanical strength, epoxy resins are widely employed in a broad range of applications, such as electronics, structural adhesives, aerospace composites and protective coatings. More than two-thirds of epoxy resins nowadays are based on diglycidyl ether of bisphenol A. In this industry the trend to replace petrol-derived materials with bio-based ones is related also to the necessity to substitute the Bisphenol A (BPA), a controversial building block recognized as an endocrine disrupter and reprotoxic substance. In particular in application as coating, the use of BPA results in hazard for customers of food and beverage products packed into containers treated with epoxy resins. The effects of human body contamination caused by BPA are diabetes, cardiovascular diseases, altered liver enzymes and reproductive apparatus damages. For these reasons, this molecule has been banned in many countries for the manufacturing of child products, and in France and Canada from all the materials in direct contact with food. The necessity to develop new epoxy resins results therefore urgent.Bio-derived molecules since now developed show the most various chemical structure, each of them producing different properties of final polymers. Peculiar characteristic shown by epoxy resins are related to the aromatic structure of its components. Aromatic molecules present in natural feedstock are mainly derived from lignin, one of the principal constituents of natural cell walls. However, to extract aromatic moieties from lignin, difficult and energy consuming processes are required. A valuable replacement of aromatic molecules, easily recoverable from glucose, are furanic molecules; their validity has been supported by several studies. In the light of the above, the work here presented is focused on production of furanic bio-based epoxy resins as potential substitute of DGEBA in can coating industry. The complete cycle of the material has been studied: the synthesis of furanic epoxy monomers and epoxy thermosets, the characterization of their chemical and physical properties (study of curing kinetics, mechanical and thermal properties). Furthermore, the application of bio-based epoxy thermosets as cans internal lining has been evaluated. Experimental results demonstrated that the obtained resins have good potential to be proposed as good alternatives to the traditional BPA-containing epoxy resins
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Gonzalez, José. "Base-ball et dépendance le cas vénézuélien." Lille 3 : ANRT, 1987. http://catalogue.bnf.fr/ark:/12148/cb37594783g.
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Fechner, Harry H. E., University of Western Sydney, College of Law and Business, and School of Management. "Data base accuracy and integrity as a precondition for overhead allocations." THESIS_CLAB_MAN_Fechner_H.xml, 2004. http://handle.uws.edu.au:8081/1959.7/807.
Full textAbstract:
Interest in more accurate assignment of overhead costs to establish credible product/service cost profiles has assumed substantial prominence in much of the recent debates on management accounting practices. While the promotion of new cost management systems and in particular Activity Based Costing (ABC) has promised to address many of the perceived shortcomings of more traditional and long established techniques, the lack of its implementation success raises some concern as to the validity and value of these new system designs. A major purpose of this thesis is the development of a mathematical model that is capable of computing overhead allocations on the basis of organisational specific dimensions other than DLH.While almost all data bases suffer from data entry and omission errors, the information content contained in the data bases often forms the basis for management decisions without first confirming the accuracy of the data base content. The model has been successfully applied and tested to detect internal consistency and data element detail accuracy. Future research may test the applicability of the model with more diverse data bases to confirm its generalisability as an investigative as well as predictive model.Doctor of Philosophy (PhD)