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1

Максименко, В. С. "Напрями підвищення ефективності роботи туристистичних підприємств на ринку ділового туризму (на прикладі туроператора «Форсаж-Тур»)." Thesis, Одеський національний економічний університет, 2021. http://local.lib/diploma/Maksimenko.pdf.

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Доступ до роботи тільки на території бібліотеки ОНЕУ, для переходу натисніть на посилання нижче
У роботі розглядаються теоретичні аспекти забезпечення ефективності діяльності туристичних підприємств на ринку ділового туризму. Висвітлено сутність та особливості розвитку ділового туризму. Проаналізовано перелік об’єктів ділового туризму у світі та на території України. Надано загальну характеристику туристичного оператора «Форсаж-Тур»». Проаналізовано фінансову-господарську діяльність туроператора «Форсаж-Тур» за 2018-2020 роки. Запропоновано проектування та впровадження нового туристичного продукту «Назад у майбутнє», який відповідає критеріям ділового туризму. Проведено калькуляцію майбутнього туру. Обґрунтовано економічна доцільність впровадження нового туру для туристичного підприємства.
The work deals with the theoretical aspects ensuring the efficiency of economic activity of the tourism industry in the market of business tourism. The essence and features of development of business tourism are highlighted. The list of objects of business tourism on the territory of Ukraine is analyzed. The general description of the tourist operator "Forsage-Tour" is given. The financial-economic activity of tour operator «Forsage-Tour» for 2018-2020 has been analyzed. The design and implementation of the new tourist product "Rotterdam. Back to the future", which meets the criteria of business tourism, is proposed. The calculation of the forthcoming tour is carried out. The economic expediency of introducing a new tour for a tourist enterprise is substantiated.
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Сорока, Ю. В. "Напрями підвищення ефективності туроператорської діяльності у сфері подієвого туризму (на прикладі ТОВ «Макінтур»)." Thesis, Одеський національний економічний університет, 2021. http://local.lib/diploma/Sopoka1.pdf.

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Доступ до роботи тільки на території бібліотеки ОНЕУ, для переходу натисніть на посилання нижче
У роботі розглядаються теоретичні засади забезпечення ефективної діяльності туристичних підприємств у сфері подієвого туризму. Досліджено значення різноманітних видів подій для організації туристичної діяльності в світі та в Україні. Розглянуто напрямки державної підтримки подієвого туризму. Проаналізовано фінансово-господарську діяльність туристичного оператора «Макінтур» за 2018-2020 рр. Винайдено резерви підвищення ефективності діяльності підприємства за рахунок диверсифікації послуг. Запропоновано розробка нового подієвого туру, що передбачає відвідання туристами з м. Київ Одеського міжнародного кінофестивалю. Обґрунтована економічна доцільність впровадження до асортименту підприємства вказаного туристичного продукту.
The work deals with the theoretical aspects of ensuring the effective activity of tourism enterprises in the market of event tourism. The importance of various types of events for organizing tourist activity in the world and in Ukraine is highlighted. The directions of state support for event tourism are considered. Author analysis the financial-economic activity of the tourist operator «Macintur» for 2018-2020. Provisions were made for increasing the efficiency of the enterprise through diversification of services. Author proposed the introduction of a new event tour, which involves visiting the Kiev tourists of the Odessa International Film Festival. The economic expediency of the development of event tours for a tourist enterprise is substantiated.
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3

Lund, Simon. "Good cop, bad cop? : A corpus analysis on the semantic prosody of the noun cop." Thesis, Karlstads universitet, Fakulteten för humaniora och samhällsvetenskap (from 2013), 2018. http://urn.kb.se/resolve?urn=urn:nbn:se:kau:diva-71622.

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The public opinion on the favourability towards the police varies greatly in the different populations in the United States. This is a corpus linguistic study that investigates a possible change in semantic prosody of the word cop. The study also investigates the distribution of the keyword in the different subcorpora to see if it has driven an overall change in the semantic prosody. The source is the Corpus of Historical American English, dating from 1800 to 2009. The Corpus of Historical American English is divided into four subcategories that have a median of 51% fictional material throughout the corpus. The four subcategories in the corpus are fiction, news, popular magazines, and non-fictional books. The data are divided into two categories, the first one being the positive/neutral category and the second category being the negative category. Neutral/positive is when cop is used with neutral or positive connotations and the negative is when cop is used with negative connotations. The period studied is that of 1859 to 2009 and this time span is divided into four periods to be more manageable. The distribution of the word in the subcorpora shows that the cop is used mostly in fictional material. The results show that the use of cop in contextual positive or neutral situations increase during the time span. To further this matter additional studies on cop in other corpora from America and other parts of the speaking world would benefit the knowledge on the noun’s semantic prosody and to further knowledge in the public opinion on the police.
Befolkningens attityd i de Förenta staterna varierar kraftigt mellan olika grupperingarna inom landet. Detta är en korpuslingvistisk studie som undersöker en möjlig semantisk prosodisk förändring hos ordet cop. Studien utgår ifrån Corpus of Historical American English som dateras mellan 1800 – 2009. Den semantiska prosodin undersöks genom att dela in träffarna i två kategorier, användning i neutral/positiv semantisk prosodi och användning i negativ semantisk prosodi. Studien undersöker även distributionen av ordet i korpusens underkorpus för att se om distributionen kan ha en koppling till semantisk prosodi. Underkorpusen är skönlitteratur, nyheter, populärmagasin och icke skönlitterära böcker. Tidsperioden som undersöks är 1859 – 2009 och denna period delas in i fyra mindre, mer hanterbara perioder. Resultatet visar att cop använts i en majoritet av skönlitterära texter i korpusen. Undersökningen visar att det finns en majoritet av negativ semantisk prosodisk användning under period 1 och 2. Period 3 skiftar lite mellan kategorierna men från 1940 hamnar cop i neutrala/positiv majoritet och Period 4 har en stark positiv semantisk prosodisk trend. Studien visar att cop har genomgått en förändring i ordets semantiska prosodi från negativ till neutral/positiv. För att utöka kunskapen kring detta ämne skulle fler undersökningar i fler korpus från de Förenta staterna och resten av den engelsktalande världen behöva göras. Detta skulle öka kunskapen kring ordets semantiska prosodi och kunna ge viss insikt i den offentliga attityden gentemot polisväsendet.
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4

Flogvall, Carl, and Stefan Nordenskjöld. "A regression analysis of NHL cap hits." Thesis, KTH, Matematik (Inst.), 2014. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-155194.

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This report is a study if a multi linear regression could be used to predict the cap hit of hockey forwards from the NHL. Data was collected during the 2010-2011, 2011-2012, and 2012-2013 seasons. The chosen variables were common hockey statistics and a few none hockey-related, like origin and age. The initial model was improved by removing insignicant covariates, detected by BIC-test and p-values. The final model consisted of 291 players and had an adjusted R2-value of 0,7820. Of the covariates, goals, assists and ice time had the biggest impact on a player's cap hit.
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5

Kungsman, Jimmy. "Semiclassical approximation of Dirac resonances using the CAP method." Licentiate thesis, Uppsala universitet, Analys och tillämpad matematik, 2012. http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-172750.

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6

Sudwell, Mark Ian. "Chronic back pain : a narrative analysis." Thesis, University of Exeter, 1998. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.367457.

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7

Pearson, Simon Nathaniel. "America’s Cup sailing: Biomechanics and conditioning for performance in grinding." AUT University, 2009. http://hdl.handle.net/10292/924.

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Grinding is integral to tacking and gybing manoeuvres in America’s Cup sailing. Grinding is a standing position cyclic upper body task requiring manual arm cranking of winches, which control movement of the mast and sails. Limited information exists on biomechanical factors involved in grinding performance. This thesis determined technique and muscular performance characteristics of sailors related to grinding performance, and effects of a training intervention on grinding performance. Reliability of grinding ergometer performance testing was evaluated across direction, load and heel conditions. In all conditions relative performance between individuals was consistent (r = 0.84-0.99) and the grinding performance test differentiated well between individuals. External work had lower overall variation (1.6-3.9%) than peak power (1.3-5.4%), especially when grinding against greater loads. Grinding performance was less consistent in heeled conditions (4.6-6.9%) than on the flat, but grinding direction did not affect reliability. Performance changes over 4% could be interpreted with confidence. Peak torque occurred at 95° (77 N m) and 35° (69 N m) for forward and backward grinding respectively (0° = grinding crank vertically up). Torque of >50 N m was maintained through 72% of the cycle during forward grinding but only 47% for backward grinding. Differences were attributed to a greater spread of active muscles throughout the cycle for forward grinding, and contrasting movements contributing most to torque – upper body push for forward grinding and pull for backward grinding. Variant characteristics of the two grinding directions provide some explanation for the significant advantage (+8.0%, p<0.001) when grinding in pairs with an anterior-posterior heel compared to a medio-lateral heel. Movement characteristics did not readily explain why an anterior-posterior heel may be more advantageous under higher grinding loads (1.0%, p = 0.254), while medio-lateral heel is better at lower loads (2.0%, p = 0.017). Muscular performance of sailors, examined using an instrumented Smith machine, showed force and 1RM strength were greater in the bench press by ~17%. Velocity and power output were greater for the bench pull across the range of loads with the difference increasing exponentially as load increased to over 400% higher at 1RM load. Bench press 1RM and maximum force capability demonstrated strongest correlations with forward grinding performance (r = 0.88-0.99 and 0.87-0.99 respectively) with the relationship increasing with grinding load. There was a strong relationship for backward grinding with bench pull maximum power (r = 0.85-0.98) in addition to 1RM (r = 0.90-0.95) and maximum force (r = 0.87-0.95). Backward grinding performance showed greater improvements in the power-focussed training group than the control group for moderate (+1.8%) and heavy load (+6.0%) grinding in the intervention study. Changes in maximum power output and power at 1RM had large correlations (r = 0.56-0.61) with changes in both moderate and heavy load grinding performance. Time to peak force explained 70% of the change in heavy load grinding performance. Performance benefits from the training intervention were not entirely clear, but the likelihood of a detrimental effect was low (<5%), therefore further training intervention was recommended.
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8

Malak, Ramez. "2D gel analysis on CNP-overexpressing mouse brain." Thesis, McGill University, 2002. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=79041.

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2',3'-Cyclic nucleotide 3 '-phosphodiesterase (CNP) is an early marker for oligodendrocytes, and it is suspected to be implicated in the expansion of membranes during myelination. We have previously generated transgenic mice that overexpress CNP. These mice showed altered oligodendroyte development, produced aberrant myelination, and had less MBP accumulated in myelin. More interestingly, ODCs isolated from those mice had a tremendous increase in the process extension formation. The purpose of the present study is to compare the protein expression pattern in the myelin isolated from control and CNP overexpressing mice (L191), using two-dimensional gel electrophoresis. We found that CNP overexpression increases HSC70, and HSP70, and decreases MAG expression in myelin. We also found that the mRNA for MAG, in L191 brain was identical to control brain during all stages of development. These findings suggest that CNP may be implicated with HSC70 in vesicular transport, and this may explain the mechanism of process extension mediated by CNP.
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9

Mi, Jian. "SiC Growth by Laser CVD and Process Analysis." Diss., Available online, Georgia Institute of Technology, 2006, 2006. http://etd.gatech.edu/theses/available/etd-04062006-135055/.

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Thesis (Ph. D.)--Mechanical Engineering, Georgia Institute of Technology, 2006.
Lackey, W. Jack, Committee Chair ; Cochran, Joe K., Committee Member ; Danyluk, Steven, Committee Member ; Fedorov, Andrei G., Committee Member ; Rosen, David W., Committee Member ; Wang, Zhonglin, Committee Member.
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10

Eriksson, Olof. "Techno Economic Analysis of Reverse Osmosis Combined with CSP + PV in Kuwait." Thesis, Högskolan Dalarna, Energiteknik, 2020. http://urn.kb.se/resolve?urn=urn:nbn:se:du-34521.

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Seawater desalination plays an important role when fighting the freshwater scarcity that many places around the world are currently facing. The increasing need for desalinated water is followed by a high energy demand. It is therefore essential that an expansion of desalination capacity is accompanied by a parallel use of renewable energy sources in this process. This thesis presents a techno-economic study on a reverse osmosis (RO) desalination plant, with a nominal power consumption of 15 MW, that is powered by a concentrated solar power (CSP) plant combined with a photovoltaic (PV) power plant, in Kuwait. The main aim of this thesis was to find which system designs would give the lowest global warming potential and levelized cost of the desalinated water. In addition, it has been investigated how electricity price and emission allowance cost could make a solar power plant competitive to the grid. For this purpose, some components in the whole system were simulated using System Advisor Model and Engineering Equation Solver. With the results obtained from the simulations, a dynamic model of the whole system was developed in MATLAB, Simulink where simulations were done for a typical meteorological year in Shagaya, Kuwait. Both on-grid and off-grid systems were considered.   In the on-grid case, the lowest cost of water was obtained with only PV (ca 0.65 USD/m3) and this could reduce carbon emissions by 30 % compared to only using the grid. Combining CSP and PV could reduce the carbon emissions by 85 % but with a 35 % increase in water cost. It was found that an electricity price of 0.1 USD/kWh or an emission allowance cost of 70 USD/tCO2-eq would make a CSP + PV plant competitive to the grid. These results indicate that the choice of which system is best for powering an on-grid RO plant depends on how the environmental and economic factors are prioritised. In the case of the off-grid system, both the lowest cost of water (ca 0.9 USD/m3) and the highest capacity factor were obtained with a CSP + PV plant with 16 h of storage, a solar multiple of 3 and a PV capacity of 28 MW.
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Jiang, Yunlian. "Analysis and Approximation of Optimal Co-Scheduling on CMP." W&M ScholarWorks, 2011. https://scholarworks.wm.edu/etd/1539623351.

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In recent years, the increasing design complexity and the problems of power and heat dissipation have caused a shift in processor technology to favor Chip Multiprocessors. In Chip Multiprocessors (CMP) architecture, it is common that multiple cores share some on-chip cache. The sharing may cause cache thrashing and contention among co-running jobs. Job co-scheduling is an approach to tackling the problem by assigning jobs to cores appropriately so that the contention and consequent performance degradations are minimized. This dissertation aims to tackle two of the most prominent challenges in job co-scheduling.;The first challenge is in the computational complexity for determining optimal job co-schedules. This dissertation presents one of the first systematic analyses on the complexity of job co-scheduling. Besides proving the NP completeness of job co-scheduling, it introduces a set of algorithms, based on graph theory and Integer/Linear Programming, for computing optimal co-schedules or their lower bounds in scenarios with or without job migrations. For complex cases, it empirically demonstrates the feasibility for approximating the optimal schedules effectively by proposing several heuristics-based algorithms. These discoveries facilitate the assessment of job co-schedulers by providing necessary baselines, and shed insights to the development of practical co-scheduling systems.;The second challenge resides in the prediction of the performance of processes co-running on a shared cache. This dissertation explores the influence on co-run performance prediction imposed by co-runners, program inputs, and cache configurations. Through a sequence of formal analysis, we derive an analytical co-run locality model, uncovering the inherent statistical connections between the data references of programs single-runs and their co-run locality. The model offers theoretical insights on co-run locality analysis and leads to a lightweight approach for fast prediction of shared cache performance. We demonstrate the effectiveness of the model in enabling proactive job co-scheduling.;Together, the two-dimensional findings open up many new opportunities for cache management on modern CMP by laying the foundation for job co-scheduling, and enhancing the understanding to data locality and cache sharing significantly.
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12

Nagai, Masaki. "Analysis of a diamond CVD process using computer simulation." Thesis, Massachusetts Institute of Technology, 1996. http://hdl.handle.net/1721.1/38416.

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13

Vecci, Roberta <1978&gt. "Theoretical and Experimental Analysis of micro-CHP Energy Systems." Doctoral thesis, Alma Mater Studiorum - Università di Bologna, 2013. http://amsdottorato.unibo.it/5814/.

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In the framework of the micro-CHP (Combined Heat and Power) energy systems and the Distributed Generation (GD) concept, an Integrated Energy System (IES) able to meet the energy and thermal requirements of specific users, using different types of fuel to feed several micro-CHP energy sources, with the integration of electric generators of renewable energy sources (RES), electrical and thermal storage systems and the control system was conceived and built. A 5 kWel Polymer Electrolyte Membrane Fuel Cell (PEMFC) has been studied. Using experimental data obtained from various measurement campaign, the electrical and CHP PEMFC system performance have been determinate. The analysis of the effect of the water management of the anodic exhaust at variable FC loads has been carried out, and the purge process programming logic was optimized, leading also to the determination of the optimal flooding times by varying the AC FC power delivered by the cell. Furthermore, the degradation mechanisms of the PEMFC system, in particular due to the flooding of the anodic side, have been assessed using an algorithm that considers the FC like a black box, and it is able to determine the amount of not-reacted H2 and, therefore, the causes which produce that. Using experimental data that cover a two-year time span, the ageing suffered by the FC system has been tested and analyzed.
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14

Hui, Mei Lin. "A CSP approach to the analysis of security protocols." Thesis, University of Leicester, 2001. http://hdl.handle.net/2381/30516.

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Security protocols involve an exchange of messages in order to achieve a goal such as authentication of a user or secrecy of a session key. Many established protocols have been found to be flawed using protocol analysis techniques. In this thesis we will be extending current CSP-based protocol modelling techniques. Recent techniques for analyzing security protocols have tended to concentrate upon the small protocols that are typically found in the academic literature. However, there is a huge gulf between these and most large commercial protocols. As a result, existing techniques are difficult to apply directly to these large protocols. In this thesis we develop the notion of safe simplifying transformations: transformations that have the property of preserving insecurities; the effect of such transformations is that if we can verify the transformed protocol, then we will have verified the original protocol. We identify a number of safe simplifying transformations, and use them in the analysis of two commercial protocols, the CyberCash Main Sequence protocol and SET. We extend the CSP-based analysis technique to model the property of non-repudiation and give a formal generalized definition. Our definition of non-repudiation is tested against our two case studies. Another property we model is that of key compromise: the reuse of a compromised session key that might lead to an authentication or secrecy attack. We look at how to model the intruder learning the value of a key and then using it in an attack. We apply this technique to our case studies, looking for key compromise attacks using the session keys.
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Gacic, Natasha. "Metodjämförelse mellan instrumenten Vitros 5,1 FS och QuikRead CRP för analysen P-CRP." Thesis, Linnéuniversitetet, Institutionen för kemi och biomedicin (KOB), 2013. http://urn.kb.se/resolve?urn=urn:nbn:se:lnu:diva-24054.

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In studies of serum, in the early 1930s, from patients with pneumonia, a factor was found. It could agglutinate certain pneumococcal species. This factor, which later became known as C-reactive protein (CRP), increased sharply during the early and middle stages of the disease. CRP was identified as an acute phase protein and found especially in bacterial infections. CRP is synthesized in the liver by stimulation of interleukin 6 (IL-6), which is produced by the monocytes, and consists of five non-covalently bound subunits. The aim of this study was to compare two different analytical instruments (Vitros 5.1 FS Ortho-Clinical Diagnostics and QuikRead CRP Orion Diagnostica) for CRP analysis. In this study, Vitros 5.1 FS is used as a reference instrument. QuikRead CRP is a small instrument intended for patient-near testing. Vitros 5.1 FS (Ortho-Clinical Diagnostics a Johmon-Johmon Company, Rochester, NY, U.S.A) is a fully automated instrument for measuring various analytes of clinical importance in body fluids. For analysis of CRP, plasma is used. The amount of CRP is obtained by measuring turbidity at a specific wavelength in an Immuno-turbidimetric reaction. QuikRead CRP (Orion Diagnostica, Espoo, Finland) is an immuno-turbidimetric test in which micro-particles coated with anti-human CRP are used to measure the amount of CRP in whole blood, plasma or serum. Comparison between Vitros 5.1 FS and QuikRead CRP for the P-CRP analysis shows a good correlation (R= 0.997) of the mean value from the analysis I, II and III.  An intercept of -8.52 shows a decrease in the values of CRP for QuikRead comparatively Vitros 5.1 FS.  Bland-Altman-plot shows a slightly increased spread of results. Paired T-test shows that Vitros 5.1 FS and QuikRead CRP does not produces the same results. This study shows that QuikRead CRP is a user-friendly instrument that fits well in near patient testing. QuikRead CRP and Vitros 5.1 FS did not give the same results of P-CRP. This does not affect the results in regards to distinguish a viral infection (10-50 mg / L) from a bacterial infection (> 100 mg / L).
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LIMA, Lucas Albertins de. "Formalisation of SysML design models and an analysis strategy using refinement." Universidade Federal de Pernambuco, 2016. https://repositorio.ufpe.br/handle/123456789/17636.

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The increasing complexity of systems has led to increasing difficulty in design. Thestandard approach to development, based on trial and error, with testing used at later stages toidentify errors, is costly and leads to unpredictable delivery times. In addition, for critical systems,for which safety is a major concern, early verification and validation (V&V) is recognised asa valuable approach to promote dependability. In this context, we identify three important anddesirable features of a V&V technique: (i) a graphical modelling language; (ii) formal andrigorous reasoning, and (iii) automated support for modelling and reasoning. We address these points with a refinement technique for SysML supported by tools. SysML is a UML-based language for systems design; it has itself become a de facto standard in the area. There is wide availability of tool support from vendors like IBM, Atego, and Sparx Systems. Our work is distinctive in two ways: a semantics for refinement and for a representative collection of elements from the UML4SysML profile (blocks, state machines, activities, and interactions) used in combination. We provide a means to analyse design models specified using SysML. This facilitates the discovery of problems earlier in the system development lifecycle, reducing time and costs of production. In this work we describe our semantics, which is defined using a state-rich process algebra called CML and implemented in a tool for automatic generation of formal models. We also show how the semantics can be used for refinement-based analysis and development. Our case studies are a leadership-election protocol, a critical component of an industrial application, and a dwarf signal, a device used to control rail traffic. Our contributions are: a set of guidelines that provide meaning to the different modelling elements of SysML used during the design of systems; the individual formal semantics for SysML activities, blocks and interactions; an integrated semantics that combines these semantics with another defined for state machines; and a framework for reasoning using refinement about systems specified by collections of SysML diagrams.
O aumento da complexidade dos sistemas tem levado a um aumento na dificuldade da atividade de projeto. A abordagem padrão para desenvolvimento, baseada em tentativa e erro, com testes usados em estágios avançados para identificar erros, é custosa e leva a prazos de entrega imprevisíveis. Além disto, para sistemas críticos, para os quais segurança é um conceito chave, Verificação e Validação (V&V) com antecedência é reconhecida como uma abordagem valiosa para promover confiança. Neste contexto, nós identificamos três características importantes e desejáveis de uma técnica de V&V: (i) uma linguagem de modelagem gráfica; (ii) raciocínio formal e rigoroso, e (iii) suporte automático para modelagem e raciocínio. Nós tratamos estes pontos com uma técnica de refinamento para SysML apoiada por ferramentas. SysML é uma linguagem baseada na UML para o projeto de sistemas. Ela tem se tornado um padrão de facto na área. Há uma grande disponibilidade de ferramentas de fornecedores como IBM, Atego, e Sparx Systems. Nosso trabalho se destaca de duas maneiras: ao fornecer uma semântica para refinamento e considerar uma coleção representativa de elementos do perfil UML4SysML (blocos, máquina de estados, atividades, e interações) usados de forma combinada. Nós fornecemos uma estratégia para analisar modelos de projeto especificados em SysML. Isto facilita a descoberta de problemas mais cedo durante o ciclo de vida de desenvolvimento de sistemas, reduzindo tempo e custos de produção. Neste trabalho nós descrevemos nossa semântica a qual é definida usando uma álgebra de processo rica em estado chamada CML e implementada em uma ferramenta para geração automática de modelos formais. Nós também mostramos como esta semântica pode ser usada para análise baseada em refinamento. Nossos estudos de caso são um protocolo de eleição de líder, o qual é um componente crítico de uma aplicação industrial, e um sinal anão, o qual é um dispositivo para controlar tráfego em linhas férreas. Nossas contribuições são: um conjunto de orientações que fornecem significado para os diferentes elementos de modelagem de SysML usados durante o projeto de sistemas; as semânticas formais individuais para atividades, blocos e interações de SysML; uma semântica integrada que combina estas semânticas com outra definida para máquina de estados; e um arcabouço que usa refinamento para raciocínio de sistemas especificados por coleções de diagramas SysML.
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Nebaneh, Nixon, and Shella Ndobe. "An Analysis of Exchange Rate Variability and Stock Returns : A Swedish Perspective." Thesis, Umeå universitet, Handelshögskolan vid Umeå universitet, 2010. http://urn.kb.se/resolve?urn=urn:nbn:se:umu:diva-38390.

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The emergence of capital markets in Asia and South America, the relaxation of foreign capital controls and the adoption of flexible exchange rate regimes has prompted heavy cross-border investments in recent years.  Simultaneously, volatility in these foreign exchange markets has increased, leading to increased risk following the adoption of these flexible exchange regimes.  As such, investors have become more interested in knowing what impact the volatile markets have on their investments.  This, they seek to know, through the returns on their stock investments as stock prices are said to be a representation of firm value.   This thesis uses firm size as a parameter to analyse the role of macroeconomic variables with emphasis on  exchange rate variability on stock returns using data from 67 Swedish companies listed on the Stockholm stock exchange and selected from all the three market capitalization segments (large cap, mid cap and small cap) according to the OMX index classification. We used returns from all the non-financial firms listed on the Stockholm stock exchange between the years 1997 to 2009.  Based on the Arbitrage Pricing Theory, and using multiple regression model, we sought to ascertain  if the effect of movements in the SEK/USD and SEK/Euro exchange rates are different for companies of the small, mid and large capitalizations segments of the OMX Stockholm stock exchange and which other control variables will influence these returns more than the exchange rate movements.   Using bilateral monthly exchange rates for the USD and Euro, we find that 55 out of the 67 companies are significantly exposed to exchange rate changes within all the segments.  These are almost evenly distributed relatively across all the capitalization segments though the absolute numbers may differ considerably.  We further use one-way ANOVA to find out if there are any differences in the means of the exposures of the companies in the respective segments.  Still, we find no significant difference in their means.  These therefore give little evidence to conclude that there is actually a difference in the exposure of firms in the respective capitalisation segments to exchange variations.  We also discover that apart from exchange rate variations, other macroeconomic variables also play a big role in determining the returns of the stocks of firms.
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Willis, Christopher Ryan. "A Kinematic Analysis and Design of a Continuously Variable Transmission." Thesis, Virginia Tech, 2006. http://hdl.handle.net/10919/79677.

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This thesis describes a method for analyzing and designing a continuously variable transmission (CVT). The analysis process is implemented in a software package that can be used to tune a CVT for a given application. The analysis is accomplished through the use of kinematic principles as well as equations developed from basic energy balances. Although the theory developed can be applied to any CVT, this thesis focuses on a case study using the Team Industries brand CVT applied to the Virginia Tech Mini Baja Team. The work was motivated by the team's need to have a reliable and inexpensive method for CVT tuning. Previous approaches to CVT tuning were strictly empirical and involved mechanical component replacement in a slow and expensive trialand- error optimization loop. The tuning software is intended to be a first step in the process of properly tuning a CVT for a specific application and not a complete replacement for the empirical methods employed previously.
Master of Science
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Oglethorpe, David Richard. "Farm level land use and environmental management decisions : a modelling approach to the analysis of policy change." Thesis, University of Newcastle Upon Tyne, 1996. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.318518.

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Bertrand, Jacob Joseph. "Genetic analysis of the Chp chemosensory system of Pseudomonas aeruginosa." Diss., Search in ProQuest Dissertations & Theses. UC Only, 2009. http://gateway.proquest.com/openurl?url_ver=Z39.88-2004&rft_val_fmt=info:ofi/fmt:kev:mtx:dissertation&res_dat=xri:pqdiss&rft_dat=xri:pqdiss:3378483.

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Peralta, Estrada Julio C. "Analysis and specialisation of imperative programs : an approach using CLP." Thesis, University of Bristol, 2000. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.322591.

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Gorleku, Oforiwa Afi. "Analysis of the expression and function of mammalian CSP isoforms." Thesis, University of Edinburgh, 2011. http://hdl.handle.net/1842/5918.

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Exocytosis, the fusion of intracellular vesicles with the plasma membrane, is fundamental to intercellular communication in multicellular organisms. This pathway facilitates the release or secretion of molecules from the cell. In addition, exocytosis is essential for delivery of resident proteins to the plasma membrane. There are two different pathways of exocytosis, constitutive and regulated exocytosis. Constitutive exocytosis occurs without regulation, e.g. pathways regulating the delivery of lipids and ‘house-keeping’ proteins to the plasma membrane or the secretion of antibodies and extra-cellular matrix components from the cell. In contrast, regulated exocytosis facilitates the controlled release of extra-cellular molecules or insertion of new membrane components only in response to a physiological signal. The most common signal for regulated exocytosis is an increase in intracellular Ca2+ concentration. Several proteins function in exocytosis, and the membrane fusion step is widely believed to result from an interaction between SNARE (SNAP receptor) proteins on the vesicle membrane and plasma membrane. In neuroendocrine cells, these SNARE proteins are VAMP2, which is bound to vesicle membranes and syntaxin1A and SNAP25, which are associated with the plasma membrane. Several proteins have been implicated as SNARE regulators, such as NSF (N-ethylmaleimide-sensitive factor) and its cofactor α-SNAP, Munc18 and synaptotagmin. Another possible SNARE regulator is the cysteine string protein (CSP). CSPα was first identified in Drosophila melanogaster and was later identified in Torpedo as a possible Ca2+-channel regulator. Inactivation of the CSPα gene in Drosophila is lethal at an embryonic stage and in embryos synaptic vesicle exocytosis was decreased by ~50% at 22°C and was abolished at higher temperatures. These results provided strong evidence that CSPα has an important role in presynaptic neurotransmission. However, more recent work on CSPα null mice uncovered an important neuroprotective function for CSPα in brain, but also challenged the proposed function of CSPα in neuronal exocytosis, as no defect in this pathway was evident, at least in young animals. The only reported developmental abnormality of CSPα null mice was bilateral cryptorchidism, a failure of testicular descent during development. Interestingly, two additional CSP isoforms were recently identified in mouse and human testis, CSPβ and CSPγ. One consequence of the identification of CSPβ and CSPγ is that they may complicate analysis of CSPα knockout mice. Here, we have used a combination of techniques, cell systems and human brain samples to examine the function of CSPα in exocytosis, the expression of novel CSPα isoforms in testis, and expression changes of CSPα and its partner proteins in neurological disorders. Furthermore, we have initiated studies to examine how CSPα function is linked to cryptorchidism at the molecular level. My results show that CSPα depletion perturbs regulated exocytosis in neuroendocrine cells, but has no consistent effect on constitutive exocytosis. CSPα has been reported to have an important neuroprotective function; however, no significant changes in CSPα expression were detected in brain samples for schizophrenia, depression and bipolar disorder. Nevertheless the expression of specific CSPα binding partners was found to be significantly changed in some of these disorders. In addition to these studies focussing on CSPα function and expression in neuronal and neuroendocrine cells, studies were undertaken to analyse expression profiles of CSP isoforms in testis. This analysis found that CSPβ and CSPγ are exclusively expressed in testis, and that mRNA transcription of both isoforms is initiated with sexual maturation. Furthermore expression of both isoforms is restricted to germ cells, whereas CSPα is expressed throughout testes. Previous work has shown that the secretory hormone INSL3, which is exclusively expressed in testicular Leydig cells, is involved in the development of cryptorchidism. Confocal microscopic analysis revealed that CSPα and INSL3 colocalise on vesicles in Leydig cells, suggesting the intriguing possibility that CSPα inactivation might cause cryptorchidism due to a loss of INSL3 secretion.
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Bustamante, Montoya Mariana. "Genomic analyses of the cup-shaped cotyledoni 1 network." Doctoral thesis, Universitat Autònoma de Barcelona, 2017. http://hdl.handle.net/10803/461296.

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El desarrollo de la flor ha sido un importante campo de investigación por muchos años y el análisis extensivo de interacciones genéticas resultó en un marco de referencia que permitió entender cómo se produce la especificación de los órganos florales. Recientemente, la introducción de tecnologías de nivel genómico permitió confrimar y expandir los modelos existentes sobre el establecimiento de la identidad de los órganos florales y otros eventos importantes que ocurren durante la formación de la flor. A pesar de esto, hay otros aspectos del desarrollo floral para los cuales no existen modelos generales, como el caso de la formación de los límites entre los órganos de la flor. El gen CUP-SHAPED COTYLEDON1 (CUC1) Arabidopsis thaliana es un factor de transcripción clave involucrado en la regulación del desarrollo floral mediante el control de la formación de estos límites o fronteras. En las plantas, la separación correcta entre distintos tejidos es fundamental para el mantenimiento de los meristemos y para coordinar la formación de nuevos órganos. Esto ocurre a través de todo el desarrollo de la planta, desde la separación temprana de cotiledones en las dicotiledóneas, hasta la fromación de límites entre óvulos durante la fase reproductiva. CUC1 reprime el crecimiento en la zona de los límites que contribuye a establecer y se propuso que lo hace afectando la división celular. A pesar de este rol crucial de CUC1, los mecanismos moleculares a través de los cuales controla la formación de límites no están descriptos de manera extensiva. Aquí, la red regulatoria de CUC1 es caracterizada a nivel genómico, usando tecnologías de última generación. En este trabajo, varios aspectos de la función de CUC1 fueron analizados por primera vez mediante la combinación de enfoques complementarios que incluyen la transcriptómica, el perfil de unión al DNA del factor de transcripción y el análisis de interacción entre proteínas. Los resultados obtenidos por estas técnicas permitieron dilucidar un set de dianas transcripcionales, vías moleculares e interactores proteicos de CUC1 que ayudan a delinear los mecanismos por los cuales este factor de transcipción del tipo NAC contribuye al establecimiento de los límites entre órganos florales. Estos resultados representan un avance sustancial para la comprensión de los eventos moleculares controlados por CUC1 en esta etapa fundamental del desarrollo de una planta. En este sentido, esta Tesis provee un cuerpo de trabajo fundacional que puede utilizarse para explorar la red regulatoria de CUC1 más profundamente.
Flower development has been an active field of research for many years and the thorough analysis of genetic interactions provided a general framework to understand how floral organs are specified. More recently, the introduction of genome-wide technologies helped confirm and expand the existing models about organ identity establishment and other important events during flower formation. Still, there are other aspects of flower development for which general models are lacking, such as the formation of floral organ boundaries. The Arabidopsis thaliana CUP-SHAPED COTYLEDON1 (CUC1) gene is a key transcription factor involved in the regulation of flower development by controlling boundary formation. In plants, proper boundaries are fundamental for meristem maintenance and to coordinate organogenesis. This occurs throughout plant development, from the early separation of cotyledons in dicots to the formation of boundaries between ovules during the reproductive phase. CUC1 suppresses growth in the boundary regions that it helps to delimit, and it has been proposed that it does so by affecting cell division. Despite the crucial role of CUC1, the molecular mechanisms by which it controls boundary formation are still poorly understood. Here, CUC1 regulatory network is characterized at the genome-wide level, using state-of-the-art genomic technologies. In this work, several aspects of CUC1 function were analyzed for the first time through the combination of complementary genome-wide approaches including transcriptomics, transcription factor binding profiles and protein interactome analyses. The results obtained from such techniques allowed to elucidate a set of transcriptional targets, molecular pathways and CUC1 interactors that help delineate the mechanisms by which this NAC transcription factor contributes to the establishment of floral organ boundaries. These results represent a substantial advance in the understanding of the molecular events that are controlled by CUC1 in this key developmental stage of plant development. In this regard, this Thesis provides a foundational body of work that can be used to further explore CUC1's regulatory network.
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Pak, Sŏng-jun. "An investigation of the mechanical performance of diamond coated materials by finite element analysis." Thesis, University of Hull, 2000. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.322459.

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25

Brand, Hilmarie. "PCA and CVA biplots : a study of their underlying theory and quality measures." Thesis, Stellenbosch : Stellenbosch University, 2013. http://hdl.handle.net/10019.1/80363.

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Thesis (MComm)--Stellenbosch University, 2013.
ENGLISH ABSTRACT: The main topics of study in this thesis are the Principal Component Analysis (PCA) and Canonical Variate Analysis (CVA) biplots, with the primary focus falling on the quality measures associated with these biplots. A detailed study of different routes along which PCA and CVA can be derived precedes the study of the PCA biplot and CVA biplot respectively. Different perspectives on PCA and CVA highlight different aspects of the theory that underlie PCA and CVA biplots respectively and so contribute to a more solid understanding of these biplots and their interpretation. PCA is studied via the routes followed by Pearson (1901) and Hotelling (1933). CVA is studied from the perspectives of Linear Discriminant Analysis, Canonical Correlation Analysis as well as a two-step approach introduced in Gower et al. (2011). The close relationship between CVA and Multivariate Analysis of Variance (MANOVA) also receives some attention. An explanation of the construction of the PCA biplot is provided subsequent to the study of PCA. Thereafter follows an in depth investigation of quality measures of the PCA biplot as well as the relationships between these quality measures. Specific attention is given to the effect of standardisation on the PCA biplot and its quality measures. Following the study of CVA is an explanation of the construction of the weighted CVA biplot as well as two different unweighted CVA biplots based on the two-step approach to CVA. Specific attention is given to the effect of accounting for group sizes in the construction of the CVA biplot on the representation of the group structure underlying a data set. It was found that larger groups tend to be better separated from other groups in the weighted CVA biplot than in the corresponding unweighted CVA biplots. Similarly it was found that smaller groups tend to be separated to a greater extent from other groups in the unweighted CVA biplots than in the corresponding weighted CVA biplot. A detailed investigation of previously defined quality measures of the CVA biplot follows the study of the CVA biplot. It was found that the accuracy with which the group centroids of larger groups are approximated in the weighted CVA biplot is usually higher than that in the corresponding unweighted CVA biplots. Three new quality measures that assess that accuracy of the Pythagorean distances in the CVA biplot are also defined. These quality measures assess the accuracy of the Pythagorean distances between the group centroids, the Pythagorean distances between the individual samples and the Pythagorean distances between the individual samples and group centroids in the CVA biplot respectively.
AFRIKAANSE OPSOMMING: Die hoofonderwerpe van studie in hierdie tesis is die Hoofkomponent Analise (HKA) bistipping asook die Kanoniese Veranderlike Analise (KVA) bistipping met die primêre fokus op die kwaliteitsmaatstawwe wat daarmee geassosieer word. ’n Gedetailleerde studie van verskillende roetes waarlangs HKA en KVA afgelei kan word, gaan die studie van die HKA en KVA bistippings respektiewelik vooraf. Verskillende perspektiewe op HKA en KVA belig verskillende aspekte van die teorie wat onderliggend is tot die HKA en KVA bistippings respektiewelik en dra sodoende by tot ’n meer breedvoerige begrip van hierdie bistippings en hulle interpretasies. HKA word bestudeer volgens die roetes wat gevolg is deur Pearson (1901) en Hotelling (1933). KVA word bestudeer vanuit die perspektiewe van Linieêre Diskriminantanalise, Kanoniese Korrelasie-analise sowel as ’n twee-stap-benadering soos voorgestel in Gower et al. (2011). Die noue verwantskap tussen KVA en Meerveranderlike Analise van Variansie (MANOVA) kry ook aandag. ’n Verduideliking van die konstruksie van die HKA bistipping word voorsien na afloop van die studie van HKA. Daarna volg ’n indiepte-ondersoek van die HKA bistipping kwaliteitsmaatstawwe sowel as die onderlinge verhoudings tussen hierdie kwaliteitsmaatstawe. Spesifieke aandag word gegee aan die effek van die standaardisasie op die HKA bistipping en sy kwaliteitsmaatstawe. Opvolgend op die studie van KVA is ’n verduideliking van die konstruksie van die geweegde KVA bistipping sowel as twee veskillende ongeweegde KVA bistippings gebaseer op die twee-stap-benadering tot KVA. Spesifieke aandag word gegee aan die effek wat die inagneming van die groepsgroottes in die konstruksie van die KVA bistipping op die voorstelling van die groepstruktuur onderliggend aan ’n datastel het. Daar is gevind dat groter groepe beter geskei is van ander groepe in die geweegde KVA bistipping as in die oorstemmende ongeweegde KVA bistipping. Soortgelyk daaraan is gevind dat kleiner groepe tot ’n groter mate geskei is van ander groepe in die ongeweegde KVA bistipping as in die oorstemmende geweegde KVA bistipping. ’n Gedetailleerde ondersoek van voorheen gedefinieerde kwaliteitsmaatstawe van die KVA bistipping volg op die studie van die KVA bistipping. Daar is gevind dat die akkuraatheid waarmee die groepsgemiddeldes van groter groepe benader word in die geweegde KVA bistipping, gewoonlik hoër is as in die ooreenstemmende ongeweegde KVA bistippings. Drie nuwe kwaliteitsmaatstawe wat die akkuraatheid van die Pythagoras-afstande in die KVA bistipping meet, word gedefinieer. Hierdie kwaliteitsmaatstawe beskryf onderskeidelik die akkuraatheid van die voorstelling van die Pythagoras-afstande tussen die groepsgemiddeldes, die Pythagoras-afstande tussen die individuele observasies en die Pythagoras-afstande tussen die individuele observasies en groepsgemiddeldes in die KVA bistipping.
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26

Grewal, Harpreet Singh. "FINITE ELEMENT ANALYSIS OF THE POWDER METAL AUTOMOTIVE MAIN BEARING CAP." MSSTATE, 2009. http://sun.library.msstate.edu/ETD-db/theses/available/etd-04032009-104622/.

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In order to produce crack free metal powder compacts, the critical region of failure should be detected, so that the particular region can be strengthened during the compaction process. The finite element method, through the use of an appropriate constitutive model of the powder medium, has recently been used as an efficient design tool. The accuracy of this method highly depends on the faithfulness of the constitutive model and the quality of the material parameter set. Furthermore, in order for the simulation results to be reliable, they should be experimentally validated on real parts featuring density variations. Hence, the main concerns are the development of a standard calibration procedure for the cap material model as well as the development of a reliable technique for the experimental validation of the powder compaction simulation results. A FC-0208 automotive main bearing cap was compacted to investigate the microstructure changes at different locations within the parts. Measurements of the pore volume fraction, pore size, pore nearest neighbor, pore aspect ratio, and grain size were performed after compaction and sintering for the MBC. A finite element model for the compaction and monotonic performance of the bearing cap was developed to study the density distribution and the performance of the bearing cap during monotonic loading respectively. The image analysis methodology and monotonic load testing was created to measure density in the main bearing cap and to predict the critical location of failure respectively, and to validate the finite element model results. A comparison between the experiment and model for determining the performance of the bearing cap was carried out such that the model predicts the damage state during loading of the bearing cap.
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Rocha, Patricio. "Cap-and-Trade Modeling and Analysis for Electric Power Generation Systems." Scholar Commons, 2011. http://scholarcommons.usf.edu/etd/3316.

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Cap-and-trade is the most discussed CO2 emissions control scheme in the U.S. It is a market-based mechanism that has been used previously to successfully reduce the levels of SO2 and NOx emitted by power generators. Since electricity generators are responsible for about 40% of the CO2 emissions in the U.S., the implementation of CO2 cap-and-trade will have a significant impact on electric power generation systems. In particular, cap-and-trade will influence the investment decisions made by power generators. These decisions in turn, will affect electricity prices and demand. If the allowances (or emission permits) created by a cap-and-trade program are auctioned, the government will collect a significant amount of money that can be redistributed back to the electricity market participants to mitigate increases on electricity prices due to cap-and-trade and also, to increase the market share of low-emission generators. In this dissertation, we develop two models to analyze the impact of CO2 cap-and-trade on electric power generation systems. The first model is intended to be used by power generators in a restructured market to evaluate investment decisions under different CO2 cap-and-trade programs for a given time horizon and a given forecast in demand growth. The second model is intended to aid policymakers in developing optimal CO2 revenue redistribution policies via subsidies for low-emission generators. Through the development of these two models, our underlying objective is to provide analysis tools for policymakers and market participants so that they can make informed decisions about the design of cap-and-trade programs and about the market actions they can take if such programs are implemented.
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Hernandez, Alex. "A Customer Value Assessment Process (CVAP) for Ballistic Missile Defense." DigitalCommons@CalPoly, 2015. https://digitalcommons.calpoly.edu/theses/1473.

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A systematic customer value assessment process (CVAP) was developed to give system engineering teams the capability to qualitatively and quantitatively assess customer values. It also provides processes and techniques used to create and identify alternatives, evaluate alternatives in terms of effectiveness, cost, and risk. The ultimate goal is to provide customers (or decision makers) with objective and traceable procurement recommendations. The creation of CVAP was driven by an industry need to provide ballistic missile defense (BMD) customers with a value proposition of contractors’ BMD systems. The information that outputs from CVAP can be used to guide BMD contractors in formulating a value proposition, which is used to steer customers to procure their BMD system(s) instead of competing system(s). The outputs from CVAP also illuminate areas where systems can be improved to stay relevant with customer values by identifying capability gaps. CVAP incorporates proven approaches and techniques appropriate for military applications. However, CVAP is adaptable and may be applied to business, engineering, and even personal every-day decision problems and opportunities. CVAP is based on the systems decision process (SDP) developed by Gregory S. Parnell and other systems engineering faculty at the Unites States Military Academy (USMA). SDP combines Value-Focused Thinking (VFT) decision analysis philosophy with Multi-Objective Decision Analysis (MODA) quantitative analysis of alternatives. CVAP improves SDP’s qualitative value model by implementing Quality Function Deployment (QFD), solution design implements creative problem solving techniques, and the qualitative value model by adding cost analysis and risk assessment processes practiced by the U.S DoD and industry. CVAP and SDP fundamentally differ from other decision making approaches, like the Analytic Hierarchy Process (AHP) and the Technique for Order of Preference by Similarity to Ideal Solution (TOPSIS), by distinctly separating the value/utility function assessment process with the ranking of alternatives. This explicit value assessment allows for straightforward traceability of the specific factors that influence decisions, which illuminates the tradeoffs involved in making decisions with multiple objectives. CVAP is intended to be a decision support tool with the ultimate purpose of helping decision makers attain the best solution and understanding the differences between the alternatives. CVAP does not include any processes for implementation of the alternative that the customer selects. CVAP is applied to ballistic missile defense (BMD) to give contractors ideas on how to use it. An introduction of BMD, unique BMD challenges, and how CVAP can improve the BMD decision making process is presented. Each phase of CVAP is applied to the BMD decision environment. CVAP is applied to a fictitious BMD example.
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Bode, Andreas. "D-cap modules on rigid analytic spaces." Thesis, University of Cambridge, 2018. https://www.repository.cam.ac.uk/handle/1810/277510.

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Following the notion of $p$-adic analytic differential operators introduced by Ardakov--Wadsley, we establish a number of properties for coadmissible $\wideparen{\mathcal{D}}$-modules on rigid analytic spaces. Our main result is a $\wideparen{\mathcal{D}}$-module analogue of Kiehl's Proper Mapping Theorem, considering the 'naive' pushforward from $\wideparen{\mathcal{D}}_X$-modules to $f_*\wideparen{\mathcal{D}}_X$-modules for proper morphisms $f: X\to Y$. Under assumptions which can be naturally interpreted as a certain properness condition on the cotangent bundle, we show that any coadmissible $\wideparen{\mathcal{D}}_X$-module has coadmissible higher direct images. This implies among other things a purely geometric justification of the fact that the global sections functor in the rigid analytic Beilinson--Bernstein correspondence preserves coadmissibility, and we are able to extend this result to arbitrary twisted $\wideparen{\mathcal{D}}$-modules on analytified partial flag varieties. Our results rely heavily on the study of completed tensor products for $p$-adic Banach modules, for which we provide several new exactness criteria. We also show that the main results of Ardakov--Wadsley on the algebraic structure of $\wideparen{\mathcal{D}}$ still hold without assuming the existence of a smooth Lie lattice. For instance, we prove that the global sections $\wideparen{\mathcal{D}}_X(X)$ form a Frechet--Stein algebra for any smooth affinoid $X$.
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Dapic, Ignacio. "Numerical Model for the Lateral Compression Response of a Plastic Cup." Thesis, Virginia Tech, 2003. http://hdl.handle.net/10919/34750.

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A numerical analysis based on the finite element method is developed to simulate the mechanical response of a typical sixteen-ounce plastic drink cup subjected to a lateral compressive load. The aim of the analysis is to simulate a test in which the cup is supported horizontally in a fixture on a testing machine platen, and a loading nose attached to the actuator is displaced downward into the cup. The numerical model is developed using the software packages MSC.Patran, ABAQUS/CAE, and ABAQUS/Standard. The high impact polystyrene material of the cup is modeled as linear elastic, considering isotropic and orthotropic material behavior. The structural model of the cup is a truncated conical shell including a ring at the open end of the cup and circumferential stiffening ribs. The analysis is based on small strain, large rotation shell kinematics, and the loading apparatus of the test is simulated with a rigid, circular cylinder contacting the cup. Coupons cut from the wall of a cup are subjected to tension to determine the ranges of the meridional and circumferential moduli of elasticity. Rings cut from the open end of the cup were tested in diametrical tension to aid in validating the finite element modeling. Reasonable correlation of the simulation to available cup compression test data is achieved. Parametric studies are conducted for several meridional thickness distributions of the cup wall, and for a range of orthotropic material properties.
Master of Science
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31

Adhikari, Roshan. "ANALYSIS AND MODELING OF NON-DARCIAN FLOW IN GROUNDWATER WITH MODFLOW CFP." OpenSIUC, 2014. https://opensiuc.lib.siu.edu/theses/1550.

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Conventional methods of groundwater modeling are based on applying laminar flow condition in the aquifer and assuming primary porosity to be present in the aquifer. But in cases where conduits, caves, springs and sinks characterize the aquifer as in karst, this assumption is inappropriate. In addition to Darcian flow condition in matrix portion of aquifer there should be consideration for dealing with non-Darcian flow in the conduits where high velocity of flow occurs. Presence of conduit network in the aquifer greatly affects the potentiometric heads within the aquifer. Hence the necessity of different modeling method has long been realized for karst aquifers. MODFLOW-Conduit Flow Process (CFP) has the capability to simulate both turbulent and laminar groundwater flow condition present in caves and conduits portion of karst aquifers. This study examined the cases where a sub-regional model was used to simulate discharge of springs and heads both with and without considering the presence of conduit network in the aquifer using MODFLOW-CFP 2005 and MODFLOW 2005 respectively. Comparison of results showed that the potentiometric head in the area consisting conduit network were unrealistically low when conduit network was not considered to be present in the matrix. This study also introduces and uses a program called CONGEN to generate conduit flow process file for CFP Mode 1. Furthermore this study also carried out the benchmark testing to examine the capability of MODFLOW-CFP to simulate both laminar and turbulent pipe flow in the conduits for a sub-regional scale. Results from transient state simulation indicate that, although MODFLOW-CFP considers both laminar and turbulent flow conditions in the pipe like conduits in the karst, it underestimated the peak discharge of the springs in this study.
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32

Peltier, Caroline. "L'analyse statistique du profil sensoriel revisitée par une approche base de données." Thesis, Dijon, 2015. http://www.theses.fr/2015DIJOS084/document.

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Lors d’une épreuve d’analyse sensorielle, des sujets préalablement entrainés dégustent desproduits et les notent à l’aide de différents descripteurs afin d’établir des profils descriptifs.De nombreuses méthodes statistiques (ACP, ANOVA…) permettent d’analyser les donnéesobtenues, afin notamment d’obtenir des résultats sur les performances des sujets, et dereprésenter les produits sur des cartes.Durant ce travail de thèse, ces méthodes statistiques ont été revisitées par l’exploitationd’un grand nombre de jeux de données issus de la SensoBase (base de données contenantplus de 1000 jeux de données de profil sensoriel). Différentes méthodes de cartographie etd’analyse des performances des sujets ont ainsi été comparées, puis des améliorations ontété proposées. La prise en compte du scaling (tendance d’un sujet à disperser ses notes plus–ou moins- que le panel) et l’adaptation de cartes à des modèles statistiques spécifiques ontété tout particulièrement étudiées.Ce travail a abouti à la documentation de certaines pratiques de l’analyse sensorielle et àl’établissement de recommandations à destination des animateurs de panel. Les différentesméthodes proposées dans cette thèse ont été implémentées sous R (librairies CVAPack,MAMCAP, MultiMAM), et sont donc directement utilisables par tout animateur de panel.Tous ces outils sont transposables dans d’autres domaines scientifiques utilisant l’êtrehumain comme instrument de mesure (psychologie, économie..)
During a sensory evaluation, trained subjects taste and score products on differentdescriptors in order to obtain a descriptive profile of these products. The data are thenanalyzed by several statistical methods (PCA, ANOVA…) in order to monitor the subjectperformances and map the product space.This work aims to revisit these statistical methods thanks to the analysis of a large number ofdatasets of sensory profiling data from the SensoBase (a database containing more than athousand of datasets). Different statistical methods of mapping and analysis ofperformances were compared, then improved. We mainly focused on the so-called scalingeffect (tendency of the subject to spread his scores more or less than the panel) and onmaps related to specific statistical models.This works led to some findings about sensory analysis and recommendations for panelleaders. Furthermore, different statistical tools (R packages such as CVAPack, MAMCAP andMultiMAM) were offered. These tools could also be useful in other scientific fields usinghuman beings as a measurement instrument (psychology, economics, marketing,… )
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33

Choi, Munkang. "Modeling of Deterministic Within-Die Variation in Timing Analysis, Leakage current Analysis, and Delay Fault Diagnosis." Diss., Georgia Institute of Technology, 2007. http://hdl.handle.net/1853/14544.

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As semiconductor technology advances into the nano-scale era and more functional blocks are added into systems on chip (SoC), the interface between circuit design and manufacturing is becoming blurred. An increasing number of features, traditionally ignored by designers are influencing both circuit performance and yield. As a result, design tools need to incorporate new factors. One important source of circuit performance degradation comes from deterministic within-die variation from lithography imperfections and Cu interconnect chemical mechanical polishing (CMP). To determine how these within-die variations impact circuit performance, a new analysis tool is required. Thus a methodology has been proposed to involve layout-dependent within-die variations in static timing analysis. The methodology combines a set of scripts and commercial tools to analyze a full chip. The tool has been applied to analyze delay of ISCAS85 benchmark circuits in the presence of imperfect lithography and CMP variation. Also, this thesis presents a methodology to generate test sets to diagnose the sources of within-die variation. Specifically, a delay fault diagnosis algorithm is developed to link failing signatures to physical mechanisms and to distinguish among different sources of within-die variation. The algorithm relies on layout-dependent timing analysis, path enumeration, test pattern generation, and correlation of pass/fail signatures to diagnose lithography-caused delay faults. The effectiveness in diagnosis is evaluated for ISCAS85 benchmark circuits.
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34

Cyders, Timothy J. "Analysis and Experimental Comparison of Models of a New Form of Continuously Variable Transmission." Ohio University / OhioLINK, 2012. http://rave.ohiolink.edu/etdc/view?acc_num=ohiou1354807440.

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35

Bautz, David James. "Genomic Analysis of Human and Mouse Guanine-7-Methyltransferase with Active Site Characterization." Thesis, Virginia Tech, 2001. http://hdl.handle.net/10919/33369.

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The 5' end of eukaryotic and viral mRNAs contain a "cap" structure with the sequence m7G(5')pppN(5'). The methylation of the 7-position on the guanine cap is very important to proper mRNA processing and initiation of translation. The enzyme responsible for this methylation, RNA guanine-7-methyltransferase, has been cloned and studied from a number of different species, including human, X. laevis, yeast, and C. elegans. The sequences for mouse guanine-7-methyltransferase cDNA and protein have been deduced based upon identity of mouse ESTs to the cDNA of the human enzyme. The deduced mouse cDNA encodes an ORF of 465 amino acids and is 76.4% identical to the human enzyme, or 86.5% within the C-terminal domain. Active site characterization of mouse and human guanine-7-methyltransferase indicates a cysteine residue is important to proper enzyme activity. Enzyme activity was completely eliminated when N-ethylmaleimide (NEM) was added to the assay mixture. When the product of the reaction, S-adenosyl-L-homocysteine (SAH), was added at a concentration of 40uM the mouse enzyme retained 60% activity while enzyme isolated from Human Osteosarcoma (HOS) cells retained 100% of the original activity. SAH demonstrated no protective effects on the cloned human enzyme. Factors that affect binding of RNA to the active site were also investigated. UV-cross-linking of RNA to the active site of the mouse enzyme was inhibited 35% by NEM. Cap analog, GpppG, at a concentration of 1mM, inhibited cross-linking, but the similar nucleotide GMP, at a concentration of 1mM, did not inhibit cross-linking. These analyses have given a clearer understanding of this very important enzyme.
Master of Science
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36

Cunha, Arlindo Marques. "A political economy analysis of the 1992, 1999 and 2003 CAP reforms." Thesis, University of Reading, 2007. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.486317.

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The implementation of the Common Agricultural Policy (CAP)-started in the early 1960s and soon became the object of a large array of criticisms. However, it was not until 1992 t~at a substantial reform was adopted, even th~ugh some sectorial me~sures had been undertaken before, in order to overcome surplus production and sharp budgetary crises. From 1992 to 2003, the CAP experienced three multi-sector wide-scope reforms, which implied a substantial shift in its policy instruments: the 199iMac Sharry reform, the 1999 Agenda 2000 reform and the 2003 Fischler reform. The aim of this study is to contribute to a better understanding of those CAP _reform processes, attempting to respond to three key questions: why did the reforms come to the political agenda at a given time; which factors were more determinant in influencing their final configurations; and why was the CAP mostly unchanged for thirty years, and then underwent almost a revolution in a short period ofless than fifteen years? Two different, and complementary, approaches will be adopted. t- The first consists of an eclectic political economy inspired analysis of the CAP reform processes on the basis of a structured framework. It is based on factual historic reports, published literature, and personal experience. Coherently with that framework, the analysis of each reform will consider three major points: the economic and social context; an overview of the reform process; and an assessment of the different factors that motivated the reform proposal and ofthose that influenced and determined its final configuration. The second approach consists of launching a two round Delphi process to gather the views of a panel of experienced players who took active part in the three reforms considered. As in the former approach, the aim is to get a live, first-hand, evaluation of what were the more influential factors in the two steps of the CAP policy-making process: the presentation of the proposals and the negotiation. The study concludes that CAP refonns occurred either in response to strong economic and political pressures taking place at a given time, or as a result of the reformist agenda of the ED Commission; and that the Agricultural Council is in general reluctant to accept reform but, once negotiations are underway, the active bargaining games taking place in the Council nonnally result in a weakening of the refonn proposals in order to accommodate the interests of the member states.
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37

Marshall, Dayle Lyn. "An analysis of cricket umpiring decisions during the 2007 Cricket World Cup." Pretoria : [S.n.], 2010. http://upetd.up.ac.za/thesis/available/etd-02232010-132922.

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38

Tsai, Jyun-Yu, and 蔡峻宇. "Efficiency Analysis and Controller Design of CVP in a Pneumatic Wind Energy Storage System." Thesis, 2011. http://ndltd.ncl.edu.tw/handle/46729042464675212635.

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碩士
國立清華大學
動力機械工程學系
99
The purpose of this research is to design a controller of a continuously variable planetary transmission(CVP). The controller can adjust the gear ratio based on wind speeds and the rotational speed of a flywheel. With this controller, the flywheel can rapidly reach the rotational speed which is suitable for compressing the air into a tank. Also, a wind turbine can be operated at the best efficiency point with this controller. Therefore, the efficiency of transforming wind energy into compressed air improves. Structure of pneumatic storage system with the turbine as well as the flywheel and how each part functions will be introduced. How the wind energy transforms into the compressed air in the system will also be illustrated. The process of designing the controller is followed in the research. A mechanical controller is a priority to design, and the efficiency and the availability are analyzed after the design of mechanical controller. If the result is not as good as estimated, the design of an electronic one will be adopted. After the design of the controller is finished, an efficiency comparison will be proceeded as a reference to improve. The two systems compared are one which punches the air directly driven by the turbine and another, we design, which punches the air by the energy stored in the flywheel.
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39

Haung, Hung-Shen, and 黃弘盛. "The Analysis of Bancassurance’s Influence On Business Performance of the Property Insurance Company -- Evidence Analysis of CVP Model." Thesis, 2009. http://ndltd.ncl.edu.tw/handle/05213245798406803991.

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碩士
銘傳大學
風險管理與保險學系碩士在職專班
97
Accompanying with financial liberalization, it is necessary that the financial industry is going to diversification. Bancassurance not only increasing both banks and property insurance companies’ profitability but also reducing property insurance companies’ risk is the best alliance model. The major objective of this study is to Analysis whether there is the correlation between the bancassurance and the operating performance of a property insurance company by Cost-Volume-Profit Analysis of Premium Income. The study provides following evidences: 1.Business ratio in Bancassurance increase year by year. Under the operation of cross-selling, strategic alliance and diversified marketing in Financial Holding Company, the business ratio from Bancassurance is increasing year by year. 2.Selling integrated commodities is a major business for Bancassurance. 3.Profit contribution of the Bancassurance is steadily on the increase. There is a significantly positive relationship between the business of Bancassurance and the profit. It could be inferred that the profit of the property insurance company will rise if increasing the business of Bancassurance.
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40

Кузьміних, К. В. "Управління конкурентоспроможністю туристичних підприємств у сфері екологічного туризму." Thesis, 2018. http://dspace.oneu.edu.ua/jspui/handle/123456789/8106.

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Дипломна робота складається із вступу, трьох розділів основної частини, висновків, списку використаних джерел та додатків. Об’єктом дослідження є процес забезпечення сталого рівня конкурентоспроможності підприємств, що надають послугу у сфері екологічного туризму. Предметом дослідження виступають теоретичні, методологічні та практичні питання управління конкурентоспроможністю послуг у сфері екологічного туризму на прикладі ТОВ «Тартус-тур». У роботі досліджуються теоретичні основи ефективності операційної діяльності підприємств на ринку туристичних послуг. Аналізується стан фінансово-господарської діяльності ТОВ «Тартус-тур» за 2014-2016 роки. Обґрунтовуються пропозиції із впровадження трьох нових екологічних турів. За результатами дослідження підрахована економічна доцільність впровадження вказаних продуктових інновацій, проаналізовано структуру та обсяг необхідних витрат, за допомогою CVP-аналізу визначено критичні обсяги реалізації нових екологічних турів. Наведені результати аналізу й рекомендації можуть застосовуватися вітчизняними туристичними підприємствами, що на нашу думку, обумовлює практичну цінність роботи.
Thesis consists of an introduction, three sections of the main part, conclusions, list of sources used and applications. The object of research is the process of ensuring a sustainable level of competitiveness of enterprises providing services in the field of environmental tourism. In this work the theoretical bases of the operational activity of enterprises in the market of tourist services are investigated. The state of financial-economic activity of LLC "Tartus-Tour" for 2014-2016 is analyzed. The proposals for the implementation of three new environmental tours are substantiated. According to the results of the study, the economic expediency of introducing these product innovations has been calculated, the structure and amount of necessary expenditures have been analyzed, with the help of CVP analysis the critical volumes of implementation of new ecological tours are determined. The given results of the analysis and recommendations can be used by domestic tourist enterprises, which, in our opinion, determines the practical value of the work. The subject of the research is theoretical, methodological and practical issues of managing the competitiveness of services in the field of ecological tourism, for example, LLC Tartus-Tour.
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41

Андрєйченко, О. Є. "Напрями удосконалення діяльності на ринку подієвого туризму (на прикладі туроператора «Бумеранг Тур»." Thesis, 2020. http://dspace.oneu.edu.ua/jspui/handle/123456789/12093.

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У роботі розглядаються теоретичні аспекти формування сучасного стану подієвого туризму. Висвітлено роль та значення фестивалів у формуванні конкурентоспроможного продукту на туристичному ринку України. Проаналізовано рівень кількості фестивальних заходів, що проводяться на території України. Надано загальну характеристику туристичного підприємства ТОВ «Бумеранг Тур». Проаналізовано фінансову-господарську діяльність ТОВ «Бумеранг Тур» за 2017-2019 роки. Запропоновано проектування та впровадження нових туристичних продуктів «Вгору до мрій» та «Музичний атлас», які присвячені певним фестивалям. Проведено калькуляція даних турів. Обґрунтована економічна доцільність впровадження даних турів до асортименту ТОВ «Бумеранг Тур».
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42

Huang, Yu-Chih, and 黃毓智. "Thermal Analysis for CSP Package." Thesis, 2000. http://ndltd.ncl.edu.tw/handle/59072337292498895597.

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碩士
國立成功大學
工程科學系
88
Due to that the electronic products will be smaller and smaller ,heat problems has been happened. High temperature would damage components of the packages and decreases the reliability of the electronic products. And temperature of CSP packages also has the relation with solder ball grid array and chip size etc. We use thermal network method analyzing the thermal performance of the CSP package. And we also find out the total thermal resistance and center temperature of the package. Then we changed some of the original parameter, material property, solder ball number etc. The results help us to prevent the failure of the package, and increase the reliability of the products.
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43

Sha, Shih-Hsuan, and 夏時軒. "Anisotropic Analysis of Cylindrical Cup Drawing." Thesis, 2001. http://ndltd.ncl.edu.tw/handle/71253547678182370738.

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碩士
淡江大學
機械工程學系
89
A methodology for formulating an elasto-plastic three-dimensional finite element model, which is based on Prandl-Reuss flow rule and Hill''s yield criterion respectively, associated with an Updated Lagrangian Formulation, is developed to simulate isotropic and anisotropic sheet metal forming process. An extended algorithm is proposed to formulate the boundary condition, such as nodal penetration and separation, strain increment and rotation increment, and altered elasto-plastic state of material. Under the model of three-dimensions, the numerical simulation results include relationship between the punch load and punch displacement, CPU time, the earing contour, the variation of sheet thickness, deformation diagrams in different forming stages, the distribution of stress and strain and so on. Then, comparison between the simulation and experimental data can be used to verify the reliability and accuracy of the finite element program developed in this thesis. The shape function derived from a four-node quadrilateral degenerated shell element is associated into the stiffness matrix to constitute the finite element model. This study examined the numerical simulation on cylindrical cup drawing of anisotropic circular blank; and the experiments on the relationship between punch load and punch displacement; and the thickness distribution of work pieces. The findings of numerical simulation and experimental data indicated consistence. Therefore, the elasto-plastic large deformation finite element program can reasonably simulate cylindrical cup drawing process.
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44

Chang, Sheng-Ping, and 張生平. "Penalty Kick Analysis on 2006 World Cup." Thesis, 2007. http://ndltd.ncl.edu.tw/handle/74996623655551214890.

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碩士
國立體育學院
教練研究所
95
Due to the modification of football match regulation, the penalty kick has become a critical point of the final match-outcome when two national teams have shown the highest equivalent performance and have resolve in a tie. In recent years, this has become a recurring phenomenon. This research focused on the penalty kicks in the 2006 World Cup (WC2006). The objective was to identify the possible determining factors influencing the performance of goalkeepers and strikers. Discussion on penalty strategies and other penalty kick researches in the international field were also brought into consideration. Notational analysis and SILOCON COACH, a 2D motion analysis system, were used to analyze data. The results were as below: the places where the ball passed the goalmouth were recorded with a tendency to fall in the two far sides of the goal. This mapping of places has shown great accordance with the result of WC2002. Results also showed the scoring rate, scoring count, and an evident strategy adoption of the GB strategy (early strategy) which conflicts with the results of WC2002, which the GA strategy (late strategy) was adopted more often(WC2002 GA:15, GB:22; WC2006 GA:13, GB:37). Compared to the findings of WC2002, in which GA was better, the results of scoring strategy in WC2006 showed better performance of the GB strategy (WC2002 GA: 41%, GB: 59%; WC2006 GA: 26%, GB: 74%). From the data gathered and analyzed, the GB strategy seemed to be the current trend in terms of adoption and scoring rate. (WC2002 GA: 36%; GB: 11%; WC2006 GA: 8%; GB: 22%). Hence, the GA strategy would likely not be as advantageous as what Kuhn had urged in the 1980s.
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45

李欣怡. "A Strategic Analysis for the CSP Industry." Thesis, 2010. http://ndltd.ncl.edu.tw/handle/76918211387901988300.

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46

Chang, Ho-shun, and 張和順. "Synthesis of CNT using CVD and Characterization Analysis." Thesis, 2006. http://ndltd.ncl.edu.tw/handle/55311821507749074857.

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碩士
國立聯合大學
化學工程學系碩士班
94
This thsis reports the synthesizing of carbon nanotube(CNT).Catalysts of iron,cobalt,and nickel,were evenly distributed on each of substrates of SiO2 and MgO by sol-gel method and solution method.Methane was the carbon source for synthesizing CNTs on each of various catalysts.Then the synthesized CNTs were purified and activated under suitable conditions.Specific area,SEM,RAMAN,TGA and TEM were measured to understand the physical and chemical properties of CNT.Cyclic voltammerter was employed to measure specific capacitance.Futhermore,co-catalyst CoMo/MgO and NiMo/MgO were employed to synthesize CNTs with smaller diameter,higher specific surface area and higher specific capacitance.Its electrochemical capacitance performance is close to that of ideal capacitor.Its applicability will be futher assessed.
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47

Yeh, Shiao-Chian, and 葉曉謙. "Thermal Stress Analysis of Flip Chip in CSP." Thesis, 2001. http://ndltd.ncl.edu.tw/handle/64085546230673201152.

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碩士
國立中山大學
機械工程學系研究所
89
Abstract The thesis is aimed to analyze the flip chip in chip scale package (CSP) by finite element method incorporated with software ANSYS due to thermally cyclic loading. The coefficient of thermal expansion (CTE) of underfill and different mechanical properties of four kinds underfill-A, B, C, D and with/without metal cap are considered as parameters. The effects of above-mentioned parameters on package’s displacement, strain and stress fields are studied. The results show that the maximum equivalent strain and stress take place at the interface between chip and underfill far away from the center of the whole package and on the top of the most outside solder bump in the solder joint. The larger the CTE of underfill is, the larger the maximum equivalent strain and stress are. Package with metal cap can reduce the displacement to almost half or more of that without cap, but increase the values of maximum equivalent strain and stress. No matter with metal cap or not, the underfill D is the best choice. Hence, the underfill material properties possess lower CTE and larger Young’s modulus than those of solder bump.
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48

Chan, Shih-Hao, and 詹世豪. "Synthesis and Analysis of Transparent Conductive CVD Graphene." Thesis, 2016. http://ndltd.ncl.edu.tw/handle/vbcqa8.

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博士
國立中央大學
光電科學與工程學系
104
Graphene, a sp2-hybridized carbon film with unique physical and chemical properties. Geim and Novoselov are first discovered the single layer graphene by using tape method in 2004, and became the hottest topic in various research area decade. This dissertation first focuses on the growth model of graphene crystal in order to pursue the precision growth time for graphene thin film. The graphene grain size was reached to 100 μm, the sheet resistance was 310 Ω/□ and the optical transmittance at 550 nm was 97.7%. Numerous samples were verified the growth model. Second, in order to get the large-scale graphene film which endued with single crystal properties, the single orientation of hexagonal graphene crystals have been fabricated on Cu (111) substrate. Moreover, Fourier Transformation was used as a notion to calculate the orientation of hexagonal graphene crystals, the result of the orientation was about 2 ~ 3o when graphene been synthesized on Cu (111). Graphene has been transferred to a BK7 glass substrate from Cu (111) for the sheet resistance and the average optical transmittance measurements, were 354 Ω/□ and 97.52%. Last part of this study is low temperature synthesis of graphene. We applied plasma-assisted CVD growing graphene film at operated temperature of 600oC on Cu foil. Pursuing the mechanism of low temperature synthesis of graphene, we measured the atomic spectra after hydrogen and methane ionized by electric field. In the experiment, the hydrogen flow rate was varied from 10 to 50 sccm, the 2D peak of Raman spectrum was increased with increasing the hydrogen flow rate, and this result was corresponded to the atomic spectra of hydrogen. In addition, we noticed that the content sources of plasma including hydrogen and by-products, meaning the additional hydrogen gas is not necessary. Finally, the high quality of graphene film was certified by using Raman spectroscopy.
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49

Lu, Tun-Chang, and 呂墩棖. "The Application of Micro-Cap in Numerical Analysis." Thesis, 2011. http://ndltd.ncl.edu.tw/handle/42542884337110562524.

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碩士
淡江大學
電機工程學系碩士班
99
Computer-aided numerical analysis by the circuit simulator Micro-Cap is presented. Micro-Cap is designed primarily for analog circuit analysis. It has an interactive schematic editor in conjunction with SPICE2 numerical algorithms to form a powerful program that can perform transient, AC, DC and Fourier analyses of electronic circuits. Now the program is used to do numerical analysis of differential equations, algebraic and transcendental equations, and numerical integration. The differential equations and algebraic equations may be linear or nonlinear, and in particular, the differential equations may be integral differential equations which can be solved directly, without taking derivatives first. Circuits are setup, and transient or DC analysis is performed to carry out the numerical analysis. The processes can be extended to solve sets of differential and algebraic equations. It is very easy to enter circuits into a personal computer because the schematic editor is menu-driven. The solution is available as high-resolution curves and numeric output in tabulated form on the screen and as a printer output.
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50

Chang, Tsung-Hsien, and 張淙賢. "Analysis on Insert Molding of LED Encapulation Cap." Thesis, 2008. http://ndltd.ncl.edu.tw/handle/50158089347451826194.

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碩士
國立臺灣科技大學
自動化及控制研究所
96
Currently injection molding is the most popular method to fabricate precise plastics parts for mass production. As LED being widely used in many applications, the insert molding of LED encapulation caps is gaining more attention. This research is to use Moldflow MPI 5.0 moldflow analysis software to simulate LED insert molding and to compare with experimental short shot, selective injection velocity and melt temperature for molding window experiment. By variant mold temperature with and without insert molding, the melt temperature of polymer and mold temperature are obtained as significant injection factors for better filling effect. Finally the packing pressure is changed to check the Z-deflection simulation. Results of LED insert molding experiments found that the lower melt temperature caused short shot. When the packing pressure is close to 89kg/cm2, the minimum warpage for average LED encapulation caps height is close to the LED mold height. This research can be used for developing injection molding for more precise and stable insert molding of LED encapulation caps to achieve better quality of LED parts.
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