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1

Lee, James Shing Hin. "Going abroad : US legacy carriers' shift to international operations." Thesis, Massachusetts Institute of Technology, 2008. http://hdl.handle.net/1721.1/45238.

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Thesis (S.M.)--Massachusetts Institute of Technology, Dept. of Aeronautics and Astronautics, 2008.<br>Includes bibliographical references (p. 115-117).<br>In the recent few years, there has been an observed trend of US legacy carriers putting more emphasis on international traffic than domestic, i.e. expanding international capacity while decreasing their domestic capacity. It is generally understood that the reason for doing so is due to the lower level of competition in international markets. Compared with the highly deregulated domestic market, legacy carriers face less competition in international markets especially from low cost carriers, and thus should be able to generate a higher yield. The goal of this thesis is to examine how the operational strategies for legacy carriers have changed and how different factors affected the changes. More specifically, the evolution of operations of legacy carriers in different regions of the world from 1995 to 2006 was analyzed in order to understand quantitatively how these strategies evolved through time, the driving force behind the change, and the results of the changes. We looked at the relative traffic and capacity volumes in different regions, and compared the costs, revenues and profitability among them. This study showed that between 2003 and 2006, legacy carriers increased international capacity by 26% while decreasing domestic capacity by 5%, thereby increasing their proportion of international capacity from 30% to 36%. Two measures were found to be a good explanatory variable for this shift. This first was the relative change of profitability between domestic and international operations as derived from the change in gap between domestic and international unit cost (Ex Transport Related & Fuel) and the change in gap between domestic and international passenger unit revenue between 2000 and 2003, whereby the international profitability improved relative to domestic profitability in the period.<br>(cont.) The other was the yield premium that international operations have over domestic markets after average stage length was adjusted for. Both of these factors created the setting for US legacy carriers to aggressively shift operations internationally.<br>by James Shing Hin Lee.<br>S.M.
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2

Tajti, Norbert. "Enhancing Hungarian Special Forces through transformation--the shift to Special Operations Forces." Thesis, Monterey, California : Naval Postgraduate School, 2010. http://edocs.nps.edu/npspubs/scholarly/theses/2010/Jun/10Jun%5FTajti.pdf.

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Thesis (M.S. in Defense Analysis)--Naval Postgraduate School, June 2010.<br>Thesis Advisor(s): Lee. Doowan ; Second Reader: Greenshields, Brian H. ; Third Reader: Porkolab, Imre. "June 2010." Description based on title screen as viewed on July 14, 2010. Author(s) subject terms: Special Forces, Special Operations Forces, Hungary, organizational design, special operations, NATO. Includes bibliographical references (p. 103-108). Also available in print.
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3

Stockton, Tony J., and Joseph S. Jr John. "Medical planning for military operations other then [i.e. than] war: Is a paradigm shift required?" Monterey, California. Naval Postgraduate School, 2002. http://hdl.handle.net/10945/9791.

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Approved for public release; distribution is unlimited<br>Approved for public release; distribution is unlimited<br>Military operations other than war are increasing in frequency and, as one might surmise present unique challenges to the operational commander and the medical planner. Over time and by necessity the U.S. military has developed a logistical support system with unprecedented capability. This logistical system includes a medical system that is increasingly called upon to provide care to people outside the normal scope. Increased participation means Navy assets will be tasked to provide care to U.S. troops, U.N. troops, multinational troops, NGO personnel, and the civilians that precipitated the need for intervention in the first place. The current planning paradigm is rightfully focused on combat support. This thesis will investigate the necessity of breaking away from that paradigm when planning MOOTW.
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4

John, Joseph S. Jr. "Medical planning for military operations other then [i.e. than] war : Is a paradigm shift required?" Thesis, Monterey, California. Naval Postgraduate School, 2002. http://hdl.handle.net/10945/6049.

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Military operations other than war are increasing in frequency and, as one might surmise present unique challenges to the operational commander and the medical planner. Over time and by necessity the U.S. military has developed a logistical support system with unprecedented capability. This logistical system includes a medical system that is increasingly called upon to provide care to people outside the normal scope. Increased participation means Navy assets will be tasked to provide care to U.S. troops, U.N. troops, multinational troops, NGO personnel, and the civilians that precipitated the need for intervention in the first place. The current planning paradigm is rightfully focused on combat support. This thesis will investigate the necessity of breaking away from that paradigm when planning MOOTW.
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5

Kuchi, Jayasurya. "AN EFFICIENT APPROACH TO REDUCE TEST APPLICATION TIME THROUGH LIMITED SHIFT OPERATIONS IN SCAN CHAINS." OpenSIUC, 2017. https://opensiuc.lib.siu.edu/theses/2182.

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Scan Chains in DFT has gained more prominence in recent years due to the increase in the complexity of the sequential circuits. As the test time increases along with the number of memory elements in the circuit, new and improved methods came in to prominence. Even though scan chain increases observability and controllability, a big portion of the time is wasted while shifting in and shifting out the test patterns through the scan chain. This thesis focus on reducing the number of clock cycles that are needed to test the circuit. The proposed Algorithm uses modified shift procedures based on 1) Finding hard to detect faults in the circuit. 2) Productive way to generate test patterns for the combinational blocks in between the flip flops. 3) Rearranging test patterns and changing the shift procedures to achieve fault coverage in reduced number of clock cycles. In this model, the selection process is based on calculating the fault value of a fault and total fault value of the vector which is used to find the hard faults and the order in which the vectors are applied. This method reduces the required number of shifts for detecting the faults and thereby reducing the testing time. This thesis concentrates on appropriate utilization of scan chains for testing the sequential circuits. In this context, the proposed method shows promising results in reduction of the number of shifts, thereby reducing the test time. The experimental results are based on the widely cited ISCAS 89 benchmark circuits.
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6

Stroozas, B. A., D. Biroscak, M. Eckert, et al. "The NASA EUVE Satellite in Transition: From Staffed to Autonomous Science Payload Operations." International Foundation for Telemetering, 1996. http://hdl.handle.net/10150/611421.

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International Telemetering Conference Proceedings / October 28-31, 1996 / Town and Country Hotel and Convention Center, San Diego, California<br>The science payload for NASA's Extreme Ultraviolet Explorer (EUVE) satellite is controlled from the EUVE Science Operations Center (ESOC) at the Center for EUV Astrophysics (CEA), University of California, Berkeley (UCB). The ESOC is in the process of a transition from a single staffed shift to an autonomous, zero-shift, "lights out" science payload operations scenario (a.k.a., 1:0). The purpose of the 1:0 transition is to automate all of the remaining routine, daily, controller telemetry monitoring and associated "shift" work. Building on the ESOC's recent success moving from three-shift to one-shift operations (completed in Feb 1995), the 1:0 transition will further reduce payload operations costs and will be a "proof of concept" for future missions; it is also in line with NASA's goals of "cheaper, faster, better" operations and with its desire to out-source missions like EUVE to academe and industry. This paper describes the 1:0 transition for the EUVE science payload: the purpose, goals, and benefits; the relevant science payload instrument health and safety considerations; the requirements for, and implementation of, the multi-phased approach; a cost/benefit analysis; and the various lessons learned along the way.
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7

Marshall, Carol. "Modelling the shift in the balance of care in the NHS." Thesis, University of Stirling, 2013. http://hdl.handle.net/1893/20350.

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The concept of Shifting the Balance of Care was first introduced to NHS Scotland in 2005 through the Kerr Report. The key messages from the report were to: ensure sustainable and safe local services, which are supported by the right skills, change the emphasis of care into the community, provide preventative reactive care, and fully integrate the system to tackle the changes, use technology more effectively, and involve the public in finding solutions to change. Following the report, a framework was developed which highlighted and prioritised eight areas of improvement. These areas for improvement are the focus by which this research examines if Operational Research (OR), specifically OR models, can have a positive impact in Shifting the Balance of Care. The research utilises underlying OR methodologies and methods and provides evidence from the literature of the ability of nine selected models to facilitate the Shift in the Balance of Care. A contributing factor to the research is the barriers to implementation of OR models into the NHS. With reference to the literature, the common barriers to implementation of OR models are categorised and used to provide direction to modellers where implementation barriers are more prevalent in some models than in others. The research also provides empirical evidence of three selected models’ (the Lean Methodology, Process Mapping and Simulation, developed over two Case Studies) ability to address and influence the prioritised Improvement Areas, with the addition of a newly developed model: SoApt. The development of SoApt follows the Principles of Model Development derived as a guide to modellers who wish to develop a new model. SoApt is also empirically explored in a Case Study and provides some evidence of the models ability to aid Decision-makers, faced with limited budgets, to choose between options which will Shift the Balance of Care. OR methods and methodologies are examined to ascertain the Roles of Models for each model explored in the Case Studies. Examination of the Roles of Models against the Improvement Areas provided evidence of a models’ ability to address more than one of the priority areas and that models can be used together or sequentially. In addition, with reference to OR methods and methodologies, a theoretical Evaluation Framework is proposed which suggests the User and User Satisfaction is key to the evaluation of a model’s success; positive experiences of the User and Use of the model may help to eliminate some of the barriers to implementation.
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8

Kronberg, F., P. Ringrose, L. Losik, D. Biroscak, and R. F. Malina. "RE-ENGINEERING THE EUVE PAYLOAD OPERATIONS INFORMATION FLOW PROCESS TO SUPPORT AUTONOMOUS MONITORING OF PAYLOAD TELEMETRY." International Foundation for Telemetering, 1995. http://hdl.handle.net/10150/608529.

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International Telemetering Conference Proceedings / October 30-November 02, 1995 / Riviera Hotel, Las Vegas, Nevada<br>The UC Berkeley Extreme Ultraviolet Explorer (EUVE) Science Operations Center (ESOC) is developing and implementing knowledge-based software to automate the monitoring of satellite payload telemetry. Formerly, EUVE science payload data were received, archived, interpreted, and responded to during round-the-clock monitoring by human operators. Now, knowledge-based software will support, augment, and supplement human intervention. In response to and as a result of this re-engineering project, the creation, storage, revision, and communication of information (the information flow process) within the ESOC has been redesigned. We review the information flow process within the ESOC before, during, and after the re-engineering of telemetry monitoring. We identify six fundamental challenges we face in modifying the information flow process. (These modifications are necessary because of the shift from continuous human monitoring to a knowledge-based autonomous monitoring system with intermittent human response.) We describe the innovations we have implemented in the ESOC information systems, including innovations in each part of the information flow process for short-term or dynamic information (which changes or updates within a week) as well as for long-term or static information (which is valid for more than a week). We discuss our phased approach to these innovations, in which modifications were made in small increments and the lessons learned at each step were incorporated into subsequent modifications. We analyze some mistakes and present lessons learned from our experience.
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9

Excoffier, Mathilde. "Chance-Constrained Programming Approaches for Staffing and Shift-Scheduling Problems with Uncertain Forecasts : application to Call Centers." Thesis, Paris 11, 2015. http://www.theses.fr/2015PA112244/document.

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Le problème de dimensionnement et planification d'agents en centre d'appels consiste à déterminer sur une période le nombre d'interlocuteurs requis afin d'atteindre la qualité de service exigée et minimiser les coûts induits. Ce sujet fait l'objet d'un intérêt croissant pour son intérêt théorique mais aussi pour l'impact applicatif qu'il peut avoir. Le but de cette thèse est d'établir des approches en contraintes en probabilités en considérant l'incertitude de la demande.Tout d'abord, la thèse présente un modèle en problème d'optimisation stochastique avec contrainte en probabilité jointe traitant la problématique complète en une étape afin d'obtenir un programme facile à résoudre. Une approche basée sur l'idée de continuité est proposée grâce à des lois de probabilité continues, une nouvelle relation entre les taux d'arrivées et les besoins théoriques et la linéarisation de contraintes. La répartition du risque global est faite pendant le processus d'optimisation, permettant une solution au coût réduit. Ces solutions résultantes respectent le niveau de risque tout en diminuant le coût par rapport à d'autres approches.De plus, le modèle en une étape est étendu pour améliorer sa représentation de la réalité. D'une part, le modèle de file d'attente est amélioré et inclus la patience limitée des clients. D'autre part, une nouvelle expression de l'incertitude est proposée pour prendre la dépendance des périodes en compte.Enfin, une nouvelle représentation de l'incertitude est considérée. L'approche distributionally robust permet de modéliser le problème sous l'hypothèse que la loi de probabilité adéquate est inconnue et fait partie d'un ensemble de lois, défini par une moyenne et une variance données. Le problème est modélisé par une contrainte en probabilité jointe. Le risque à chaque période est définie par une variable à optimiser.Un problème déterministe équivalent est proposé et des approximations linéaires permettent d'obtenir une formulation d'optimisation linéaire<br>The staffing and shift-scheduling problems in call centers consist in deciding how many agents handling the calls should be assigned to work during a given period in order to reach the required Quality of Service and minimize the costs. These problems are subject to a growing interest, both for their interesting theoritical formulation and their possible applicative effects. This thesis aims at proposing chance-constrained approaches considering uncertainty on demand forecasts.First, this thesis proposes a model solving the problems in one step through a joint chance-constrained stochastic program, providing a cost-reducing solution. A continuous-based approach leading to an easily-tractable optimization program is formulated with random variables following continuous distributions, a new continuous relation between arrival rates and theoritical real agent numbers and constraint linearizations. The global risk level is dynamically shared among the periods during the optimization process, providing reduced-cost solution. The resulting solutions respect the targeted risk level while reducing the cost compared to other approaches.Moreover, this model is extended so that it provides a better representation of real situations. First, the queuing system model is improved and consider the limited patience of customers. Second, another formulation of uncertainty is proposed so that the period correlation is considered.Finally, another uncertainty representation is proposed. The distributionally robust approach provides a formulation while assuming that the correct probability distribution is unknown and belongs to a set of possible distributions defined by given mean and variance. The problem is formulated with a joint chance constraint. The risk at each period is a decision variable to be optimized. A deterministic equivalent problem is proposed. An easily-tractable mixed-integer linear formulation is obtained through piecewise linearizations
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10

Kutsenko, K. J., and D. O. Marchenko. "Hydrodynamic Effects of Shaft Surface Finish on Lip Seal Operation." Thesis, Видавництво СумДУ, 2011. http://essuir.sumdu.edu.ua/handle/123456789/13361.

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11

Sanchez, Santiago Pablo. "Rim-Jet - A Mechanical Design for a Shaft-less Propulsor." Thesis, KTH, Maskinkonstruktion (Avd.), 2019. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-259679.

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During sea rescue operations it is common for the rescue vessels to operate in water with high number of debris that can get stuck in the propulsor. In particular plastic ropes that can get tangled around the shaft and melt causing a complete stop or damage the motor. Currently rim driven shaft-less thrusters have proven to deal with debris in a better way than conventional motors, but they usually operate only at low speeds. The Swedish Sea Rescue Society along with Rolls-Royce and other partners such as Marna decided to start developing a motor combining the idea of the rim driven thrusters driven by a Permanent magnet motor and a water jet to increase the thrust. In this thesis a conceptual design for this motor is presented, in which bearings and seals have been chosen from standard components as well as the bolts and other components, and all the housing has been designed. In order to design the housing and choose the standard components, three main factors were taken into account: not using extra systems, modularity and being as compact as possible. By focusing on those three requirements different bearing and seals solutions were studied and analyzed to check their viability. Furthermore, in order to verify the design and components chosen, mathematical models through MATLAB and simulations with ANSYS were carried out. Finally the drawings of the non standard components were added including the tolerances defined by the standard components.<br>Under räddningsuppdrag är det vanligt att räddningsbåtar opererar i vatten med mycket skräp som kan sugas in i propulsorn. Speciellt plastrep kan trassla in sig runt axeln och smälta och orsaka driftstopp eller skada motorn. För närvarande finns periferi-drivna, axellösa propulsorer som har visat sig hantera skräp på ett bättre sätt än konventionella, men de är vanligen bara designade för låga farter. Sjöräddningssällskapet beslutade sig därför tillsammans med Rolls-Royce och andra partners som Marna att börja utveckla en motor som kombinerar en periferidriven propulsor med en vattenjet I detta arbete presenteras en konceptuell design för denna motor, där lager och tätningar såväl som bultar och andra komponenter har valts från standardkomponenter. För att utforma höljet och välja standardkomponenterna beaktades tre huvudfaktorer: att undvika extra system, modularitet och att vara så kompakt som möjligt. Genom att fokusera på dessa tre krav studerades och analyserades olika lager- och tätningslösningar. För att kontollera designen och komponenterna som valts genomfördes dessutom matematiska analyser med hjälp av Matlab och simuleringar med ANSYS. Slutligen togs ritningar av icke-standardkomponenter fram, inklusive toleranser definierade av standardkomponenterna.
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12

Carlson, Robin. "Clinical Significance of Response Shift in a Spine Interventional Clinical Trial." ScholarWorks, 2015. https://scholarworks.waldenu.edu/dissertations/231.

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The effectiveness of treatments for degenerative spine conditions, where the primary symptom is back pain, is typically determined using patient-reported quality of life (QoL) measures. However, patients may adjust their internal standards when scoring QoL based on factors other than their health. This response shift phenomenon could confound the interpretation of study data and impact effectiveness conclusions. In the current study, response shift was examined using structural equation modeling (SEM) and previously collected clinical trial data comparing 2 minimally invasive medical devices in lumbar spinal stenosis patients through 1 year postintervention. In subject QoL results, reprioritization shift between 3 months and 12 months that could confound standard analysis was identified. Treatment group did not influence response shift identified at 12 months. SEM provided an effective and practical tool for clinical investigators to assess response shift in available clinical study data. As response shift could lead to invalid conclusions when QoL measures are analyzed, clinical investigators should include response shift assessment in the design of clinical trials. This research into how response shift phenomenon can impact clinical trial results improves the ability of clinical investigators to interpret clinical trial data, potentially preventing erroneous conclusions. This research may also assist researchers and government regulators in the identification and reimbursement of beneficial, cost-effective medical treatments for patients worldwide. For clinical research designers, this study demonstrates a practical application of response shift assessment.
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Guler, Erdogan. "A Methodology For Lining Design Of Circular Mine Shafts In Different Rock Masses." Master's thesis, METU, 2013. http://etd.lib.metu.edu.tr/upload/12615662/index.pdf.

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The objective of this thesis is to predict lining thickness inside circular mine shafts. A numerical study with different rock mass strengths and different in-situ non-hydrostatic stresses are carried out in 2D shaft section models to predict pressures that develop on lining support. An iterative process of applying support pressure until observing no failure zone around shaft is used to simulate lining support pressure for each individual model. Later, regression and fuzzy logic analyses are carried out to find a pressure equation for all of the models. Finally, the pressure equation derived is used in elastic &ldquo<br>thick-walled cylinder&rdquo<br>equation to calculate the lining thickness required to prevent the development of a failure zone around shafts. At the end of this research, a computer program &ldquo<br>Shaft 2D&rdquo<br>is developed to simplify the lining thickness calculation process.
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Häggblom, Sofia. "Operationssjuksköterskors upplevelser av att arbeta nattskift : En intervjustudie." Thesis, Karlstads universitet, Institutionen för hälsovetenskaper, 2013. http://urn.kb.se/resolve?urn=urn:nbn:se:kau:diva-28505.

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Operationssjukvård krävs under natten för att säkerställa vården och hjälpa patienter inom rimlig tid.  Operationssjuksköterskan i operationsteamet arbetar tillsammans med opererande läkare med det kirurgiska tillvägagångssättet, samt ansvarar för patientens perioperativa vård. Syftet med denna intervjustudie var att belysa operationssjuksköterskornas upplevelser av att arbeta nattskift på en operationsavdelning. Halvstrukturerade intervjuer genomfördes med sex operationssjuksköterskor på ett medelstort sjukhus i Sverige, och efter en kvalitativ innehållsanalys av materialet framkom sex kategorier; Nattens ryggrad – teamarbetet, Natten – vårdandets tid, På Natten – alltid redo, Natten blir till dag, Natten – tidens tand samt Nattens charm. Studiens resultat speglade operationssjuksköterskornas upplevelser av att teamarbetet utgjorde grunden för ett patientsäkert arbete under nattskiftet samt att operationssjuksköterskorna fick en förbättrad möjlighet att fokusera på omvårdnaden och kommunikationen med patienten under natten. Det krävdes även konstant handlingsberedskap inför oväntade situationer, och arbetet under natten var under förändring då fler av dagskiftets operationer sköts över till natten. Operationssjuksköterskorna upplevde även att arbetet under natten blev svårare då de blev äldre, men att arbetet under nattskift ändå upplevdes som roligare än dagskiftet. Således kunde det tolkas att nattskiftet hade en inverkan på operationssjuksköterskornas arbete, då arbetet kunde vara fysiskt och psykiskt ansträngande vilket även kunde ha en inverkan på patientsäkerheten. Nattskiftets speciella karaktär och med ett närmare teamarbete resulterande ändå i att arbetet utfördes med kvalitet samt att operationssjuksköterskorna upplevde arbetet som roligare, vilket fick dem att välja att fortsätta arbeta nattskift.
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Perlman, David (David Lee). "Future vehicle types and characteristics : reducing fuel consumption through shifts in vehicle segments and operating characteristics." Thesis, Massachusetts Institute of Technology, 2015. http://hdl.handle.net/1721.1/98602.

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Thesis: S.M. in Technology and Policy, Massachusetts Institute of Technology, Engineering Systems Division, Technology and Policy Program, 2015.<br>"June 2015." Cataloged from PDF version of thesis.<br>Includes bibliographical references (pages 91-96).<br>Light duty vehicles represent a notable target of regulation in the United States due to their environmental, safety, and economic externalities. Fuel economy regulation represents one of the more prominent attempts to limit the environmental externalities of passenger vehicles entering the U.S. fleet, but focus intently on technology improvements rather than encouraging the sale of more fuel-efficient vehicle segments. More precisely, the current fuel economy standards, which will be phased in between 2012 and 2025, reflect an approach that is explicitly intended to be neutral with regard to the size and types of vehicles sold, with the stringency of the standard scaled to vehicle footprint, or the area between the four wheels. In light of this size-neutral approach to fuel economy regulation, as well as a lack of precedent in the automotive literature, the author examined the extent to which shifts in demand for different light duty vehicle segments can impact fleet-wide LDV fuel demand. Shifts in the demand for LDV segments have occurred in recent decades, with the market share of conventional passenger cars decreasing from more than 80 percent in the early 1980s to just over half today, replaced largely by sport utility vehicles (SUVs) and crossover utility vehicles (CUVs). Though many factors influenced this transition away from conventional passenger cars, available literature suggests that misalignment between fuel economy policy and prevailing market conditions, combined with some protectionist tax policies for the domestic auto industry, were the main culprits. Moreover, a fleet model analysis suggests that the impact in terms of fleet-wide fuel consumption was not trivial, with vehicles sold between 1985 and 2010 consuming, over their entire useful life, over 100 billion gallons of petroleum more than if 1985 LDV market segments have prevailed over that period. This historical analysis provided motivation and justification for exploring the potential for shifts between segments in the LDV market to influence LDV petroleum demand over the next several decades, in order to illustrate the potential missed opportunities of implementing fuel economy regulations that do not encourage the sale of smaller, more fuel-efficient vehicle segments. Using a spreadsheet-based accounting model of the vehicle fleet, the author's analysis suggests that plausible shifts in the market shares of different LDV segments could increase or decrease LDV petroleum demand by up to seven percent, relative to a reference case provided by the U.S. Energy Information Administration (which, in itself, suggests a modest decrease in the demand for SUVs and CUVs through 2040). The author also explored the potential of a more radical -yet still plausible - change to LDVs to impact fleet-wide fuel consumption over the next few decades. Automating passenger vehicle controls has long been imagined by futurists and tested in various forms by automotive manufacturers since the 1950s, but recent developments stemming from a series of competitions sponsored by the Defense Advanced Research Projects Agency between 2007 and 2011 suggest that increasingly automated vehicle features may soon become a production reality. Though intended primarily as a means of improving safety, automated vehicle systems have the potential to also decrease fuel consumption. Also using the fleet model, the author evaluated the potential of a highway-only partial automation system - akin to systems reportedly being introduced to the market by General Motors and Tesla, among others, within the next two years - to reduce fleetwide LDV fuel consumption. Results suggest that, depending on a wide range of variables, reductions in fleet-wide fuel consumption of up to two percent are possible by 2050 relative to the Energy Information Administration reference case. Though the results of the analysis explored in this thesis may seem modest, they are notable nonetheless. Most importantly, they represent reductions in fuel consumption that are possible to achieve in addition to those likely to be driven by current fuel economy regulations. Therefore, the changes to passenger vehicles explored in this thesis represent potential strategies for reducing LDV fuel consumption as manufacturers reach the limits of technological improvements to engines.<br>by David Perlman.<br>S.M. in Technology and Policy
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Žwak, Jakub. "Analýza strategických změn ve velké obchodní firmě." Master's thesis, Vysoká škola ekonomická v Praze, 2010. http://www.nusl.cz/ntk/nusl-75135.

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The thesis examine strategic shifts in big trading company. The company trades with steel. The strategic shifts are analysed and evaluated. The recommendations are made on the basis of analysis. The thesis is devided in two parts. First part is theoretical, second part is practical. The base of theoretical part is aimed at the theory of strategy and strategic operating. Practical part introduces the company and describes the shifts. In conclusion is the evaluation and the recommendations.
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Molaoa, Molaoa. "Development of a converter for grid-tied and isolated operation of an interior permanent magnet synchronous generator, coupled to a twin-shaft gas turbine." Master's thesis, University of Cape Town, 2018. http://hdl.handle.net/11427/29412.

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South Africa’s overreliance on coal fired power generation has led to the government’s commitment to diversifying the country’s energy mix. Gas turbine generators are poised to play a larger role in South Africa’s energy mix, due to the country’s abundance in natural gas reserves. Therefore, there is a need to developed gas turbine emulation systems to investigate how this transition is to be implemented and to discover new efficient ways to generate power through gas turbines. This thesis presents the development of a twin-shaft gas turbine emulator. A DC-machine that accepts both torque and speed references is used to emulate the behaviour of the gas turbine according to a modified Rowen gas turbine model. The emulator is coupled to a 1.5kW interior permanent magnet synchronous generator (IPM). The power density of a DC-machine is significantly lower than that of a gas turbine of the same rating. Thus, the DC-machine is rated at double the rating of the IPM to overcome the high inertia it has when compared to a gas turbine of the same rating. This means that the DC-machine can produce large toques to successfully emulated the dynamic behaviour of the gas turbine. A maximum error 2.5% in the emulation of the gas turbine’s speed is reported. A two-level active converter is used to compare control strategies for an IPM. Ninety-degree torque angle (NTA) control, maximum torque per ampere (MTPA) control and unity power factor (UPF) control are compared for performance. The UPF and MTPA control result in the lowest and second lowest DC-link utilisation respectively when compared to NTA control. This is due to a negative d-axis current component as opposed to a zero d-axis current component in the case of NTA control. It is also concluded that to achieve a high power factor and torque development, a negative d-axis current component is required. UPF and MTPA control perform well in both categories, with UPF control and MTPA control resulting in the highest power factor and developed torque respectively. A fourth control strategy that maximises the efficiency of the IPM is developed experimentally. The maximum efficiency (ME) control strategy minimises mechanical, core, windage and conduction losses. It also results in near unity power factor and near maximum developed torque. A nonconventional control structure that involves control of the DC-link from the generatorside converter is presented. This frees the outer-loop control of load-side converter to regulate voltage across the load when the system is supplying power to an isolated load. This control structure also allows the grid-side converter to employ reactive power compensation, without having to regulate the DC-link voltage at the same time. In doing so, large grid currents are avoided. A recursive least squares (RLS) algorithm is used to separate negative and positive sequence current components during grid voltage unbalance. A method to minimise the presence of negative sequence components in the load current is presented and implemented successfully in an experiment.
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18

Ard, Michael Colin. "On the origin of a response time underadditivity by means of cross-modal task switching, or the redundancy of operations in the configuration of task sets for cross-modal shifts." Diss., [La Jolla] : University of California, San Diego, 2009. http://wwwlib.umi.com/cr/ucsd/fullcit?p3366481.

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Thesis (Ph. D.)--University of California, San Diego, 2009.<br>Title from first page of PDF file (viewed August 20, 2009). Available via ProQuest Digital Dissertations. Vita. Includes bibliographical references (p. 178-184).
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19

Mudrák, Miroslav. "Modifikace plánu výstavby liniové stavby." Master's thesis, Vysoké učení technické v Brně. Fakulta stavební, 2017. http://www.nusl.cz/ntk/nusl-265380.

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Submitted thesis deals with planning of an implementation of a linear construction by using the contract conditions. The theoretical describes the topics of project management, engineering, procurement and traffic politics of Czech Republic. It also describes the history, status and development of the highway network. In the end there is introduced the modernized section of the D1 highway. The practical part deals with the application of the modified project Modernization solutions to the D1 highway - section 22 by introducing a shift operation during the construction. It solves the impact of shift work on phasing construction schedule, financial plan and compares the positive aspects of the solutions against the negative ones. In conclusion there is an evaluation effectiveness of the actual and modified variants of the construction.
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20

Єрмаков, А. О. "Удосконалення технологічного процесу виготовлення вала Н19.32.30.01 шляхом вибору раціональних режимів різання на токарній операції". Master's thesis, Сумський державний університет, 2021. https://essuir.sumdu.edu.ua/handle/123456789/86413.

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Пояснювальна записка містить 98 стр., табл.18, рис.14, джерел 16, додатка 2. Об’єкт дослідження: деталь Вал Н19.31.30.01. Мета роботи – аналіз та розробка вдосконалених операцій технологічного процесу механічної обробки деталі Вал Н19.31.30.01. У кваліфікаційній роботі магістра було проведено аналіз службового призначення машини, вузла і деталі; технічні вимоги до деталі, її технологічність і спосіб отримання заготовки – поковка штампована. В роботі розроблена операційна технологія для виготовлення деталі. На операції розраховані режими різання та проведене нормування часу. Обрані більш сучасні верстати, верстатні пристрої, ріжучий і вимірювальний інструмент для обробки деталі за сучасними стандартами та методиками обробки деталей. Спроектовано верстатний пристрій на операцію с базового технологічного процесу 105 – фрезерна. Науково-дослідна частина: розглянуто способи вимірювання та контролю температури різання у точці контакту ріжучого інструменту.<br>Пояснительная записка содержит 98 стр., табл.18, рис.14, источников 16, приложения 2. Объект исследования: деталь Вал Н19.31.30.01. Цель работы – анализ и разработка усовершенствованных операций технологического процесса механической обработки детали Вал Н19.31.30.01. В квалификационной работе магистра был произведен анализ служебного назначения машины, узла и детали; технические требования к детали, ее технологичность и способ получения заготовки – штампованная поковка. В работе разработана операционная разработка для производства детали. На операции рассчитаны режимы резания и проведено нормирование времени. Избраны более современные станки, станочные приспособления, режущий и измерительный инструмент для обработки детали по современным стандартам и методикам обработки деталей. Спроектировано станочное приспособление на операцию базового технологического процесса 105 – фрезерная. Научно-исследовательская часть: рассмотрены методы измерения и контроля температуры резания в точке контакта режущего инструмента.<br>The explanatory note contains 98 pages, table 18, fig. 14, sources 16, appendix 2. Object of research: detail Val N19.31.30.01. The purpose of the work is the analysis and development of improved operations of the technological process of machining the part Val N19.31.30.01. In the master's qualification work, an analysis was made of the service purpose of the machine, unit and part; technical requirements for a part, its manufacturability and a method of obtaining a workpiece - stamped forging. The work has developed an operational development for the production of a part. The cutting conditions were calculated for the operation and the time was normalized. More modern machine tools, machine tools, cutting and measuring tools for processing parts according to modern standards and methods of processing parts were selected. A machine tool was designed for the operation of the basic technological process 105 - milling. Research part: methods of measuring and controlling the cutting temperature at the point of contact of the cutting tool are considered.
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21

Tuška, Jiří. "Projekt výrobní linky na dílce motorů." Master's thesis, Vysoké učení technické v Brně. Fakulta strojního inženýrství, 2009. http://www.nusl.cz/ntk/nusl-228391.

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The topic of the thesis is counting the capacity calculations for two and three-shift operation of the four components of jet engines, deisgn layouts of each workstation of line, compare the cost of the two and three-shift operation and recommendation of appropriate option.
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22

Westling, Måns. "A Qualitative Descriptive Translation Study of Shakespeare's Romeo and Juliet." Thesis, Stockholm University, Department of English, 2008. http://urn.kb.se/resolve?urn=urn:nbn:se:su:diva-8055.

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<p>This essay is a qualitative descriptive translation study concerning two translations of Shakespeare’s Romeo and Juliet into Swedish. The purpose of the study is to investigate the translational behaviour of the translators and the translation norms that govern this behaviour.</p><p>By thoroughly analysing stretches of the play, the study will attempt to locate translation shifts (linguistic changes) that occur in the translation from the source text to the target text. These changes are connected with the translators’ fidelity towards e.g. the metre of the verse or the sense transfer of puns. The analysis also comprises a survey of the translation norms that the translators adhere to. These norms, stated by the translators themselves, are connected to their translation approach. Thus, the study will reveal the differences of translation behaviour and analyse them from a wider perspective. The translations were made around 1840 and in 1982, respectively. The considerable space in time in itself suggests that linguistic differences will occur. However, the study will also find differences as regards the purposes of the translations. The older translation appears to be performed in a tradition of fidelity to the written text and its literary qualities, whereas the modern translation clearly has the purpose of being used for the stage performance. The latter is stated by the translator himself, who also argues that Shakespeare is to be considered drama and not literature.</p>
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23

Отенко, В. Г. "Удосконалення технологічного процесу виготовлення вала-шестерні 1.1550-21.01-02 шляхом оптимізації конструкції верстатного пристрою для базування та закріплення заготовки на фрезерній операції". Master's thesis, Сумський державний університет, 2021. https://essuir.sumdu.edu.ua/handle/123456789/86447.

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Записка: 109 с., 25 рис., 7 табл., 13 джерел. «Вал-шестерня 1.1550-21.01-02» входить до складу мультиплікатора 1.1550-89.11-00 СК приводу диска 1.1550-89.05-00 СК сушарки розпилюючої. Сушіння розпиленням широко застосовується в хімічній промисловості для зневоднення концентрованих розчинів речовин. Тож удосконалення технологічних процесів виготовлення деталей сушарок є актуальним завданням, що потребує комплексних рішень. Метою дослідження є підвищення ефективності технологічного процесу виготовлення «вала-шестерні 1.1550-21.01-02» шляхом оптимізації конструкції верстатного пристрою для базування та закріплення заготовки на фрезерній з ЧПК операції. Об'єкт дослідження – технологічний процес виготовлення «вала-шестерні 1.1550-21.01-02», операція фрезерна з ЧПК. Предмет дослідження – верстатний пристрій для базування та закріплення заготовки на операції фрезерній з ЧПК, структура та параметри операції фрезерної з ЧПК. Наукова новизна: в результаті теоретичних та експериментальних досліджень виконаний статичний та динамічний аналіз пропонованої конструкції верстатного пристрою для установки заготовки «вала-шестерні» на операції фрезерній з ЧПК, що дозволило сформулювати рекомендації щодо вдосконалення конструкції пристрою з забезпечення його стійкої роботи під дією статичних та динамічних навантажень та структурно-параметричної оптимізації операції в цілому.<br>Paper: 109 p., 25 pict., 7 tabl., 13 sources. «Gear-shaft 1.1550-21.01-02» is a part of the multiplier 1.1550-89.11-00 СК of the disk drive 1.1550-89.05-00 СК of the spray dryer. Spray drying is widely used in the chemical industry for dehydration of concentrated solutions of substances. Therefore, the improvement of technological processes for the manufacture of dryer parts is an urgent task that requires comprehensive solutions. The aim of the study is increasing the efficiency of the technological process of manufacturing «gear-shaft 1.1550-21.01-02» by optimizing the design of the fixture for locating and clamping the workpiece on the milling with CNC operation. The object of the research is the technological process of manufacturing «gear-shaft 1.1550-21.01-02», milling operation with CNC. The subject of the research is the fixture for locating and clamping the workpiece for CNC milling operation, structure and parameters of CNC milling operation. Scientific novelty: as a result of theoretical and experimental studies, static and dynamic analysis of the proposed design of the fixture for the locating and clamping of the workpiece «gear-shaft» on the milling operation with CNC, which allowed to formulate recommendations for improving the design of the fixture to ensure its stable operation under static and dynamic loads and structure and parametric optimization of the operation as a whole.
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24

Каретін, Василь Миколайович. "Обґрунтування параметрів інерційного планетарного запобіжного механізму гвинтових конвеєрів". Diss., Тернопільський національний технічний університет ім. Івана Пулюя, 2021. http://elartu.tntu.edu.ua/handle/lib/34832.

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Дисертація на здобуття наукового ступеня кандидата технічних наук за спеціальністю 05.05.05 «Піднімально-транспортні машини». – Тернопільський національний технічний університет імені Івана Пулюя, Тернопіль, 2021. У дисертації на підставі сукупності узагальнених наукових результатів вирішено нове актуальне завдання підвищення технологічної ефективності процесу роботи гвинтових транспортних механізмів шляхом удосконалення конструкції та обґрунтування параметрів інерційної планетарної запобіжної муфти, яку виконано на основі біпланетарного інерційного механізму з рухомою реактивною ланкою. На основі проведених теоретично-експериментальних досліджень розроблено: аналітичні залежності, які дозволяють аналізувати переміщення точки дебалансу та механізму загалом; аналітичні залежності для визначення кінематичних і динамічних параметрів стопового режиму роботи гвинтового конвеєра з інерційною планетарною запобіжною муфтою; емпіричні рівняння, які характеризують зміну гальмівного обертового моменту стопового режиму роботи та коефіцієнта корисної дії передачі обертового моменту. На основі проведених теоретичних і експериментальних досліджень обґрунтовано основні раціональні параметри інерційної планетарної запобіжної муфти гвинтового конвеєра. Максимальний обертовий момент вихідного вала інерційної планетарної запобіжної муфти гвинтового конвеєра у стоповому режимі формується шляхом зростання енергії дебаланса за рахунок збільшення швидкостей обертання дебаланса навколо своєї осі та осі привода імпульсного модуля та змінюється в діапазоні 19,6 … 29,4 Н∙м за відповідного передаточного відношення приводу дебаланса, що дорівнює 2,2. Раціональне функціонування процесу роботи гвинтового конвеєра з метою забезпечення максимального гальмівного обертового моменту вихідного вала при виникненні перевантаження його робочих органів у межах від 20 Н∙м до 42 Н∙м, або початку стопового режиму роботи гвинтового конвеєра досягнуто за наступних параметрів: частота обертання вхідного вала ІПЗМ від 262,5 об/хв до 437,5 об/хв; передаточне відношення приводу верхнього дебалансу від 2,0 до 3,2; передаточне відношення приводу нижнього дебалансу рівне 1,0. Конструктивна новизна технічного рішення захищена патентом України на корисну модель.<br>The dissertation for obtaining a scientific degree of the Candidate of technical sciences on a specialty 05.05.05 "Lifting and transportation machinery". – Ternopil Ivan Puluj National Technical University, Ternopil, 2021. In the dissertation, on the basis of the set of generalized scientific results, the new actual problem of increasing the technological efficiency of screw transport mechanisms operation process is solved due to design improvement and substantiation of parameters of the inertial planetary safety clutch, which is produced on the basis of the biplanetary inertial mechanism with a mobile reactive link. On the basis of the conducted theoretical and experimental research the following has been developed: analytical dependences which allow to analyse the displacement of the imbalance point and the mechanism in general; analytical dependences for determination of kinematic and dynamic parameters of the operation stop mode of the screw conveyor with inertial planetary safety clutch; empirical equations that characterize the change in braking torque of the stop mode and the torque transmission efficiency. Grounded on the conducted theoretical and experimental research, the optimal parameters of the inertial planetary safety clutch of the screw conveyor are substantiated. The braking safety torque of the output shaft of the screw conveyor inertial planetary safety clutch in the stop mode is formed by means of increasing the imbalance energy due to acceleration of the imbalance rotation around its axis and the drive axis of the pulse module as well as range variation of 19.6 … 29.4 N∙m, when respective gear ratio of the imbalance drive equals to 2.2. Rational functioning of the process of the screw conveyor operation in terms of providing maximum braking torque of the output shaft in case of overload of its working parts in the range from 20 N∙m to 42 N∙m, or the beginning of the stop mode of the screw conveyor, is achieved by the following parameters: input shaft speed is from 262.5 rpm to 437.5 rpm; the gear ratio of the upper imbalance drive is from 2.0 to 3.2 and the lower imbalance drive is equal to 1.0. The annual economic effect achieved by increasing the technological capabilities of the screw conveyor is UAH 12,209.7. The research results were implemented at PJSC "TerA" (Ternopil), LLC "Ukraine" (Ternopil region, Pidvolochysk district) and PP "Ukraine-Agro-2C" (Khmelnytsky region, Chemerivtsi district) in technological lines, respectively, for transportation and dough formation and for transportation of bulk products and goods. Theoretical and practical results of the research were implemented in the educational process of Ternopil Ivan Puluj National Technical University during teaching the subject "Drives of Machines and Machine Complexes". The constructive novelty of the technical solution is protected by a patent of Ukraine for a utility model.
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25

Tsukayama, John K. "By any means necessary : an interpretive phenomenological analysis study of post 9/11 American abusive violence in Iraq." Thesis, University of St Andrews, 2014. http://hdl.handle.net/10023/4510.

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This study examines the phenomenon of abusive violence (AV) in the context of the American Post-9/11 Counter-terrorism and Counter-insurgency campaigns. Previous research into atrocities by states and their agents has largely come from examinations of totalitarian regimes with well-developed torture and assassination institutions. The mechanisms influencing willingness to do harm have been examined in experimental studies of obedience to authority and the influences of deindividuation, dehumanization, context and system. This study used Interpretive Phenomenological Analysis (IPA) to examine the lived experience of AV reported by fourteen American military and intelligence veterans. Participants were AV observers, objectors, or abusers. Subjects described why AV appeared sensible at the time, how methods of violence were selected, and what sense they made of their experiences after the fact. Accounts revealed the roles that frustration, fear, anger and mission pressure played to prompt acts of AV that ranged from the petty to heinous. Much of the AV was tied to a shift in mission view from macro strategic aims of CT and COIN to individual and small group survival. Routine hazing punishment soldiers received involving forced exercise and stress positions made similar acts inflicted on detainees unrecognizable as abusive. Overt and implied permissiveness from military superiors enabled AV extending to torture, and extra-judicial killings. Attempting to overcome feelings of vulnerability, powerlessness and rage, subjects enacted communal punishment through indiscriminate beatings and shooting. Participants committed AV to amuse themselves and humiliate their enemies; some killed detainees to force confessions from others, conceal misdeeds, and avoid routine paperwork. Participants realized that AV practices were unnecessary, counter-productive, and self-damaging. Several reduced or halted their AV as a result. The lived experience of AV left most respondents feeling guilt, shame, and inadequacy, whether they committed abuse or failed to stop it.
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Oliver, Gelabert Antoni. "Desarrollo y aceleración hardware de metodologías de descripción y comparación de compuestos orgánicos." Doctoral thesis, Universitat de les Illes Balears, 2018. http://hdl.handle.net/10803/462902.

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Introducción El acelerado ritmo al que se genera y crece la información en la sociedad actual y la posible llegada de la tecnología de transistor a sus límites de tamaño exige la puesta en marcha de soluciones para el procesado eficiente de datos en campos específicos de aplicación. Contenido Esta tesis doctoral de carácter transdisciplinar a medio camino entre la ingeniería electrónica y la química computacional presenta soluciones optimizadas en hardware y en software para la construcción y el procesado eficiente de bases de datos moleculares. En primer lugar se propone y se estudia el funcionamiento de bloques digitales que implementan funciones en lógica pulsante estocástica orientadas a tareas de reconocimiento de objetos. Especialmente se proponen y analizan diseños digitales para la construcción de generadores de números aleatorios (RNG) como base de estos sistemas que han sido implementados en dispositivos Field Programable Gate Array (FPGA). En segundo lugar se propone y se evalúa un conjunto reducido de descriptores moleculares para la caracterización de compuestos orgánicos y la generación de bases de datos moleculares. Estos descriptores recogen información sobre la distribución de la carga molecular en el espacio y la energía electrostática. Las bases de datos generadas con estos descriptores se han procesado utilizando sistemas de computación convencionales en software y mediante sistemas de computación estocástica implementados en hardware mediante el uso de circuitería digital programable. Finalmente se proponen optimizaciones para la estimación del potencial electrostático molecular (MEP) y para el cálculo de los puntos de interacción molecular derivados (SSIP). Conclusiones Por una parte, los resultados obtenidos ponen de manifiesto la importancia de la uniformidad de los RNG en el período de evaluación para poder implementar sistemas de computación estocástica de alta fiabilidad. Además, los RNG propuestos tienen una naturaleza aperiódica que minimiza las posibles correlaciones entre señales, haciendo que sean adecuados para la implementación de sistemas de computación estocástica. Por otra parte, el conjunto de descriptores moleculares propuestos PED han demostrado obtener muy buenos resultados en comparación con otros métodos presentes en la literatura. Este hecho se ha discutido mediante los parámetros Area Under The Curve (AUC) y Enrichment Factor (EF) obtenidos de las curvas promedio Receiving Operating Characteristic (ROC). Además, se ha mostrado como la eficacia de los descriptores aumenta cuando se implementan en sistemas de clasificación con aprendizaje supervisado, haciéndolos adecuados para la construcción de un sistema de predicción de dianas terapéuticas eficiente. En esta tesis, además, se ha determinado que los MEP calculados utilizando la teoría DFT y el conjunto de bases B3LYP/6-31*G en la superficie con densidad electrónica 0,01 au correlacionan bien con datos experimentales debido presumiblemente a la mayor contribución de las propiedades electrostáticas locales reflejadas en el MEP. Las parametrizaciones propuestas en función del tipo de hibridación atómica pueden haber contribuido también a esta mejora. Los cálculos realizados en dichas superficies suponen mejoras en un factor cinco en la velocidad de procesamiento del MEP. Dado el aceptable ajuste a datos experimentales del método propuesto para el cálculo del MEP aproximado y de los SSIP, éste se puede utilizar con el fin de obtener los SSIP para bases de datos moleculares extensas o en macromoléculas como proteínas de manera muy rápida (ya que la velocidad de procesamiento obtenida puede alcanzar del orden de cinco mil átomos procesados por segundo utilizando un solo procesador). Estas técnicas resultan de especial interés dadas las numerosas aplicaciones de los SSIP como por ejemplo el cribado virtual de cocristales o la predicción de energías libres en disolución.<br>Introducció El creixement accelerat de les dades en la societat actual i l'arribada de la tecnologia del transistor als límits físics exigeix la proposta de metodologies per al processament eficient de dades. Contingut Aquesta tesi doctoral, de caràcter transdisciplinària i a mig camí entre els camps de l'enginyeria electrònica i la química computacional presenta solucions optimitzades en maquinari i en programari per tal d’accelerar el processament de bases de dades moleculars. En primer lloc es proposa i s'estudia el funcionament de blocs digitals que implementen funcions de lògica polsant estocàstica aplicades a tasques de reconeixement d'objectes. En concret es proposen i analitzen dissenys específics per a la construcció de generadors de nombres aleatoris (RNG) com a sistemes bàsics per al funcionament dels sistemes de computació estocàstics implementats en dispositius programables com les Field Programable Gate Array (FPGA). En segon lloc es proposen i avaluen un conjunt reduït de descriptors moleculars especialment orientats a la caracterització de compostos orgànics. Aquests descriptors reuneixen la informació sobre la distribució de càrrega molecular i les energies electroestàtiques. Les bases de dades generades amb aquests descriptors s’han processat emprant sistemes de computació convencionals en programari i mitjançant sistemes basats en computació estocàstica implementats en maquinari programable. Finalment es proposen optimitzacions per al càlcul del potencial electroestàtic molecular (MEP) calculat mitjançant la teoria del funcional de la densitat (DFT) i dels punts d’interacció que se’n deriven (SSIP). Conclusions Per una banda, els resultats obtinguts posen de manifest la importància de la uniformitat del RNG en el període d’avaluació per a poder implementar sistemes de computació estocàstics d’alta fiabilitat. A més, els RNG proposats presenten una font d’aleatorietat aperiòdica que minimitza les correlacions entre senyals, fent-los adequats per a la implementació de sistemes de computació estocàstica. Per una altra banda, el conjunt de descriptors moleculars proposats PED, han demostrat obtenir molts bons resultats en comparació amb els mètodes presents a la literatura. Aquest fet ha estat discutit mitjançant l’anàlisi dels paràmetres Area Under The Curve (AUC) i Enrichment Factor (EF) de les curves Receiving Operating Characteristic (ROC) analitzades. A més, s’ha mostrat com l’eficàcia dels descriptors augmenta de manera significativa quan s’implementen en sistemes de classificació amb aprenentatge supervisat com les finestres de Parzen, fent-los adequats per a la construcció d’un sistema de predicció de dianes terapèutiques eficient. En aquesta tesi doctoral, a més, s’ha trobat que els MEP calculats mitjançant la teoria DFT i el conjunt de bases B3LYP/6-31*G en la superfície amb densitat electrònica 0,01 au correlacionen bé amb dades experimentals possiblement a causa de la contribució més gran de les propietats electroestàtiques locals reflectides en el MEP. Les parametritzacions proposades en funció del tipus d’hibridació atòmica han contribuït també a la millora dels resultats. Els càlculs realitzats en aquestes superfícies suposen un guany en un factor cinc en la velocitat de processament del MEP. Donat l’acceptable ajust a les dades experimentals del mètode proposat per al càlcul del MEP aproximat i dels SSIP que se’n deriven, aquest procediment es pot emprar per obtenir els SSIP en bases de dades moleculars extenses i en macromolècules (com ara proteïnes) d’una manera molt ràpida (ja que la velocitat de processament obtinguda arriba fins als cinc mil àtoms per segon amb un sol processador). Les tècniques proposades en aquesta tesi doctoral resulten d’interès donades les nombroses aplicacions que tenen els SSIP com per exemple, en el cribratge virtual de cocristalls o en la predicció d’energies lliures en dissolució.<br>Introduction Because of the generalized data growth in the nowadays digital era and due to the fact that we are possibly living on the last days of the Moore’s law, there exists a good reason for being focused on the development of technical solutions for efficient data processing. Contents In this transdisciplinary thesis between electronic engineering and computational chemistry, it's shown optimal solutions in hardware and software for molecular database processing. On the first hand, there's proposed and studied a set of stochastic computing systems in order to implement ultrafast pattern recognition applications. Specially, it’s proposed and analyzed specific digital designs in order to create digital Random Number Generators (RNG) as a base for stochastic functions. The digital platform used to generate the results is a Field Programmable Gate Array (FPGA). On the second hand, there's proposed and evaluated a set of molecular descriptors in order to create a compact molecular database. The proposed descriptors gather charge and molecular geometry information and they have been used as a database both in software conventional computing and in hardware stochastic computing. Finally, there's a proposed a set of optimizations for Molecular Electrostatic Potential (MEP) and Surface Site Interaction Points (SSIP). Conclusions Firstly, the results show the relevance of the uniformity of the RNG within the evaluation period in order to implement high precision stochastic computing systems. In addition, the proposed RNG have an aperiodic behavior which avoid some potential correlations between stochastic signals. This property makes the proposed RNG suitable for implementation of stochastic computing systems. Secondly, the proposed molecular descriptors PED have demonstrated to provide good results in comparison with other methods that are present in the literature. This has been discussed by the use of Area Under the Curve (AUC) and Enrichment Factor (EF) of averaged Receiving Operating Characteristic (ROC) curves. Furthermore, the performance of the proposed descriptors gets increased when they are implemented in supervised machine learning algorithms making them appropriate for therapeutic target predictions. Thirdly, the efficient molecular database characterization and the usage of stochastic computing circuitry can be used together in order to implement ultrafast information processing systems. On the other hand, in this thesis, it has been found that the MEP calculated by using DFT and B3LYP/6-31*G basis at 0.01 au density surface level has good correlation with experimental data. This fact may be due to the important contribution of local electrostatics and the refinement performed by the parameterization of the MEP as a function of the orbital atom type. Additionally, the proposed calculation over 0.01 au is five times faster than the calculation over 0.002 au. Finally, due to acceptable agreement between experimental data and theoretical results obtained by using the proposed calculation for MEP and SSIP, the proposed method is suitable for being applied in order to quickly process big molecular databases and macromolecules (the processing speed can achieve five thousand molecules per second using a single processor). The proposed techniques have special interest with the purpose of finding the SSIP because the big number of applications they have as for instance in virtual cocrystal screening and calculation of free energies in solution.
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27

Tzelepis, Vasileios. "Electromechanics of an Ocean Current Turbine." ScholarWorks@UNO, 2015. http://scholarworks.uno.edu/td/2112.

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The development of a numeric simulation for predicting the performance of an Ocean Current Energy Conversion System is presented in this thesis along with a control system development using a PID controller for the achievement of specified rotational velocity set-points. In the beginning, this numeric model is implemented in MATLAB/Simulink® and it is used to predict the performance of a three phase squirrel single-cage type induction motor/generator in two different cases. The first case is a small 3 meter rotor diameter, 20 kW ocean current turbine with fixed pitch blades, and the second case a 20 meter, 720 kW ocean current turbine with variable pitch blades. Furthermore, the second case is also used for the development of a Voltage Source Variable Frequency Drive for the induction motor/generator. Comparison among the Variable Frequency Drive and a simplified model is applied. Finally, the simulation is also used to estimate the average electric power generation from the 720 kW Ocean Current Energy Conversion System which consists of an induction generator and an ocean current turbine connected with a shaft which modeled as a mechanical vibration system.
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Huang, Chi-hua, and 黃琪樺. "Paradigm shift of new product operations model –A decision between self-manufacturing and outsourcing." Thesis, 2015. http://ndltd.ncl.edu.tw/handle/7625cv.

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碩士<br>國立臺灣科技大學<br>工業管理系<br>103<br>This study investigated the outsourcing solution for new product operation faced with the pressure of market demands and a lack of human resources for research and development (R&D). Based on many years of practical experiences, the author used a virtual company as a case to explain this solution. This case study provided an explanation of the purchasing decision between self-manufacturing or outsourcing, standards for supplier evaluation, and product strategy management in supplier chain management. It was expected to provide an effective solution to readers when dealing with similar situations.
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(9896135), BM Huang. "Computer model of the shaft kiln process at Queensland Magnesia (Operations) Pty. Ltd." Thesis, 1999. https://figshare.com/articles/thesis/Computer_model_of_the_shaft_kiln_process_at_Queensland_Magnesia_Operations_Pty_Ltd_/13459442.

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Chan, Wyean. "Optimisation des horaires des agents et du routage des appels dans les centres d’appels." Thèse, 2013. http://hdl.handle.net/1866/10801.

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Nous étudions la gestion de centres d'appels multi-compétences, ayant plusieurs types d'appels et groupes d'agents. Un centre d'appels est un système de files d'attente très complexe, où il faut généralement utiliser un simulateur pour évaluer ses performances. Tout d'abord, nous développons un simulateur de centres d'appels basé sur la simulation d'une chaîne de Markov en temps continu (CMTC), qui est plus rapide que la simulation conventionnelle par événements discrets. À l'aide d'une méthode d'uniformisation de la CMTC, le simulateur simule la chaîne de Markov en temps discret imbriquée de la CMTC. Nous proposons des stratégies pour utiliser efficacement ce simulateur dans l'optimisation de l'affectation des agents. En particulier, nous étudions l'utilisation des variables aléatoires communes. Deuxièmement, nous optimisons les horaires des agents sur plusieurs périodes en proposant un algorithme basé sur des coupes de sous-gradients et la simulation. Ce problème est généralement trop grand pour être optimisé par la programmation en nombres entiers. Alors, nous relaxons l'intégralité des variables et nous proposons des méthodes pour arrondir les solutions. Nous présentons une recherche locale pour améliorer la solution finale. Ensuite, nous étudions l'optimisation du routage des appels aux agents. Nous proposons une nouvelle politique de routage basé sur des poids, les temps d'attente des appels, et les temps d'inoccupation des agents ou le nombre d'agents libres. Nous développons un algorithme génétique modifié pour optimiser les paramètres de routage. Au lieu d'effectuer des mutations ou des croisements, cet algorithme optimise les paramètres des lois de probabilité qui génèrent la population de solutions. Par la suite, nous développons un algorithme d'affectation des agents basé sur l'agrégation, la théorie des files d'attente et la probabilité de délai. Cet algorithme heuristique est rapide, car il n'emploie pas la simulation. La contrainte sur le niveau de service est convertie en une contrainte sur la probabilité de délai. Par après, nous proposons une variante d'un modèle de CMTC basé sur le temps d'attente du client à la tête de la file. Et finalement, nous présentons une extension d'un algorithme de coupe pour l'optimisation stochastique avec recours de l'affectation des agents dans un centre d'appels multi-compétences.<br>We study the management of multi-skill call centers, with multiple call types and agent groups. A call center is a very complex queueing system, and we generally need to use simulation in order to evaluate its performances. First, we develop a call center simulator based on the simulation of a continuous-time Markov chain (CTMC) that is faster than traditional discrete-event simulation. Using an uniformization method, this simulator simulates the embedded discrete-time Markov chain of the CTMC. We propose strategies to use this simulator efficiently within a staffing optimization algorithm. In particular, we study the use of common random numbers. Secondly, we propose an algorithm, based on subgradient cuts and simulation, to optimize the shift scheduling problem. Since this problem is usually too big to be solved as an integer programming problem, we relax the integer variables and we propose methods to round the solutions. We also present a local search to improve the final solution. Next, we study the call routing optimization problem. We propose a new routing policy based on weights, call waiting times, and agent idle times or the number of idle agents. We develop a modified genetic algorithm to optimize all the routing parameters. Instead of doing mutations and crossovers, this algorithm refines the parametric distributions used to generate the population of solutions. We also develop a staffing algorithm based on aggregation, queueing theory and delay probability. This heuristic algorithm is fast, because it does not use simulation. The service level constraint is converted into a delay probability constraint. Moreover, we propose a variant of a CTMC model based on the waiting time of the customer at the head of the queue. Finally, we design an extension of a cutting-plane algorithm to optimize the stochastic version with recourse of the staffing problem for multi-skill call centers.
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"Distributed load balancing in a multiple server system by shift-invariant protocol sequences." 2013. http://library.cuhk.edu.hk/record=b5884389.

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Zhang, Yupeng.<br>Thesis (M.Phil.)--Chinese University of Hong Kong, 2013.<br>Includes bibliographical references (leaves 45-48).<br>Electronic reproduction. Hong Kong : Chinese University of Hong Kong, [2012] System requirements: Adobe Acrobat Reader. Available via World Wide Web.<br>Abstracts also in Chinese.
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Mattioli, Simone. "How luxury brands operating under the "creator´s light" approach manage the online shift? brand and consumer perspectives." Master's thesis, 2021. http://hdl.handle.net/10362/132603.

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As we live in times of extreme changes, Companies and brands are pushed to move in the online direction quickly. This is a difficult step for luxury brands, considering the importance of the experiential side of their offer. This work project explores how the luxury industry is managing the shift, focusing on brands addressing the "creator's light" approach, which exposes them particularly to the online challenges. We did it by confronting brands' strategies with consumers' opinion about them, drawing final conclusions from the comparison.
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Yu, Cheng-Ya, and 于振亞. "Pen Shaft and Knife Handle: Bureaucratic Co-operationon Human Rights Policies in the Chinese Party-state." Thesis, 2015. http://ndltd.ncl.edu.tw/handle/s82bx8.

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碩士<br>國立臺灣大學<br>政治學研究所<br>103<br>The delicate and sensitive nature of human rights issue sets its roots historically and politically, thus a more systematic approach must be applied in order to support the common-seen case-by-case inspections on human rights in China. This paper is innovated both in its approach and its methodology. For the new approach, this paper rather not to deploy International Regime theories on Chinese human rights issues, but to examine and provide explanations with the Fragmented Authoritarianism model (hereafter referred to as “FA”) --a theory in the realm of Comparative politics. Through the lens of FA, this paper is able to scrutinize the making of human rights policies at the bureaucracy level. This paper argues that: the Chinese central government does take up an inordinate amount of power when making human rights-related policies; however, when there comes a chance as a rather neutral stand posed by the power center, there comes a room for deploying bureaucracy politics. In order to validate this paper’s assertion, we will examine the co-operation relationships between the propaganda (宣傳) and political-legal (政法) systems on two issues: the freedom of press and the Internet, and the Letters and Visits system (信訪). In order to best utilize limited Chinese official resources for verifiable results, this paper applies a new methodology called Digital Humanities to study key words from three representative newspapers from year 2000 to 2008: People’s Daily (人民日報), Legal Daily (法制日報), and Guangming Daily (光明日報). Each newspapers defends viewpoints from the central government, the political-legal system, and the propaganda system. Results show that when the center government takes strong position on certain issue, such as the freedom of press and the Internet, there comes no room for bureaucracy politics; however, when the center government decides to take a weaker stand, such as the issue of Letters and Visits system, there is indeed a room for co-operation between departments at the bureaucracy level.
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Barrett, Betty. "Fostering Workplace Innovation and Labor-Management Partnership: The Challenge of Strategic Shifts in Business Operations at Pratt & Whitney (United Technologies)." 2001. http://hdl.handle.net/1721.1/1593.

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The closing of the military jet engine side of the facility and laying off of more than half of the workforce was an unanticipated form of instability faced in this case. The study had begun in order to document innovations between the IAM local and local area management centering on establishing a team-based work system and joint training systems. While important as innovations, these efforts did not convince Connecticut managers to maintain the work in this location. Ultimately, neither local union or local management efforts were sufficient to overcome the instability associated with broad corporate strategies around the movement of work.
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Lin, Shu-Ju, and 林淑如. "The study of the operating performance and mental workload for the shift workers at emergency response center: taking a gas management system as an example." Thesis, 2015. http://ndltd.ncl.edu.tw/handle/wzgc5p.

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碩士<br>國立中正大學<br>勞工關係學系暨研究所<br>103<br>With the economic globalization, employees are asked to take shifts keeping continuous operation in production to possess the international competitiveness of technical industry. It’s not only important to improve production capacity and process yield, but also important to keep the safety and health of employees. The research investigated the shift, display type and the number of alarms effect of monitoring staff performance and mental workload. In this study, simulation of gas monitoring system and adopts 4×2×4 independent variables combination, and then There are four level shift factors include four alarm levels of two display type. Participants must complete the primary and secondary operation at the same time. The dependent variables include the error rate of primary and secondary operation and NASA-TLX mental load scale. Results show that the four-shift-two-round employees when switching from night shifts to day shifts have a higher mental workload and a higher operation error rate. In addition, the display type shows that the single type of alarm display is less likely to distract participants, which leads to a better performance. The number of alarm should be designed to be less than 7 will have a better performance
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Chen, Chiu-Ming, and 陳秋明. "Users'' Perceptions of the Operational Space in the Shaft of Clean Rooms at a High-Tech Manufacturing Plant in Central Taiwan Science Park." Thesis, 2012. http://ndltd.ncl.edu.tw/handle/09511833619235227194.

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