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  • About
  • The Global ETD Search service is a free service for researchers to find electronic theses and dissertations. This service is provided by the Networked Digital Library of Theses and Dissertations.
    Our metadata is collected from universities around the world. If you manage a university/consortium/country archive and want to be added, details can be found on the NDLTD website.
281

Optimal Scheduling of Converter Aisle Operation in a Nickel Smelting Plant

Ewaschuk, Christopher January 2014 (has links)
The scheduling of the converter aisle of a nickel smelting plant is a non-trivial task with significant consequences to plant profitability and production. An optimization-based scheduling formulation is developed using a continuous-time paradigm to accurately represent event timings. The formulation accounts for environmental restrictions on sulfur dioxide emissions using event timing constraints. The formulation includes novel semi-continuous modeling to represent flash furnaces which operate with a continuous inlet flow and intermittent discrete material removal, as well as, a novel sequencing and symmetry-breaking scheme to account for identical units operating in parallel. A rolling horizon feature is included in the formulation to accommodate multi-period optimization. Tightening constraints are developed and used to improve the computational performance of the optimization and demonstrate the capacity of the proposed methodology to function as a real-time decision-support tool. A solution procedure is presented where an aggregate model is used to bound the objective function of the master problem in a two layer optimization scheme. Finally, a novel multi-tiered procedure is presented to enhance the optimization solution by re-optimizing for objectives of decreasing priority in order to minimize task start times and penalize deviations in the furnace flow rate. To address the closed-loop properties of scheduling, a reactive scheduling mechanism is included to allow for rescheduling to account the impact of process disturbances on the operating schedule. A methodology for reducing radical scheduling changes due to the optimization during reactive scheduling is presented. The reactive scheduling algorithm utilizes a tiered optimization approach that progressively increases the degrees of freedom available, as required, in order to achieve a feasible production schedule. The use of the reactive scheduling algorithm demonstrates the ability to reject disturbances and transition plant operation in an agile manner. / Thesis / Master of Applied Science (MASc)
282

Dramaturg as Artistic Instigator

Mcclain, Megan J 01 January 2012 (has links) (PDF)
Dramaturgs have been struggling to define themselves and assert their raison d'être in the American theatre for the past four decades. In an evolving theatrical landscape that includes expanding new play development processes and new modes of collaborative interdisciplinary theatre-making, the role of the dramaturg must be reexamined in order for it to stake a new artistic claim in the field. Devised theatre-making processes rely on dramaturgical practice as an integral part of generating, editing, and structuring performance material and offer a fertile artistic avenue for dramaturgs to utilize their skills. To explore the role of the dramaturg in devised theatre, I chose to curate a festival of three new devised works entitled Beyond the Horizon. This thesis describes in detail my role as curator in the planning, creation, and execution of the festival, as well as my role as a dramaturg within the devising process of one of the three works. To encompass both the idea of the dramaturg as an active co-creator of performance and an empowered facilitator of change, I proposed a new title for the role: artistic instigator. Drawn from my conclusions and discoveries while working on the Beyond the Horizon festival, I have formed a description about how the dramaturg-as-artistic-instigator might function within devising ensembles, propose changes to current new play development practices, and advocate for expanded methods of play-making.
283

Subsystem Failure Analysis Within the Horizon Simulation Framework

Lunsford, Ian M 01 June 2016 (has links) (PDF)
System design is an inherently expensive and time consuming process. Engineers are constantly tasked to investigate new solutions for various programs. Model-based systems engineering (MBSE) is an up and coming successful method used to reduce the time spent during the design process. By utilizing simulations, model-based systems engineering can verify high-level system requirements quickly and at low cost early in the design process. The Horizon Simulation Framework, or HSF, provides the capability of simulating a system and verifying the system performance. This paper outlines an improvement to the Horizon Simulation Framework by providing information to the user regarding schedule failures due to subsystem failures and constraint violations. Using the C# language, constraint violation rates and subsystem failure rates are organized by magnitude and written to .csv files. Also, proper subsystem failure and constraint violation checking orders were stored for HSF to use as new evaluation sequences. The functionalities of the systemEval framework were verified by five test cases. The output information can be used for the user to improve their system and possibly reduce the total run-time of the Horizon Simulation Framework.
284

Gray-box modeling and model-based control of Czochralski process producing 300 mm diameter Silicon ingots / 直径300mmのシリコンインゴットを製造するチョクラルスキープロセスのグレーボックスモデリング及びグレーボックスモデルに基づく予測制御

Kato, Shota 23 March 2022 (has links)
京都大学 / 新制・課程博士 / 博士(情報学) / 甲第24040号 / 情博第796号 / 新制||情||135(附属図書館) / 京都大学大学院情報学研究科システム科学専攻 / (主査)教授 加納 学, 教授 大塚 敏之, 教授 下平 英寿 / 学位規則第4条第1項該当 / Doctor of Informatics / Kyoto University / DGAM
285

To Come Alive in Our Experience: The Sounds of Listening in Sigurd F. Olson

Fulton, Allison 16 June 2016 (has links)
No description available.
286

General Game Playing Within Modern TabletopGames Through Rolling Horizon EvolutionaryAlgorithms

Smedman, Mattias January 2022 (has links)
Tabletop games have within recent years evolvedto become more and more complex, such as through the useof dynamic rules, permanently changing how the game worksafter a playthrough, and players playing different roles in thegame. This leads to unique challenges for Artificial Intelligence.A Tabletop Games Framework (TAG) is a framework intended topromote research within general AI for modern tabletop games.Rolling Horizon Evolutionary Algorithms (RHEA) are a typeof algorithms that have been applied to games with successin the past. By implementing a RHEA agent we can studyhow it compares to other types of agents such as Monte CarloTree Search and Random Mutation Hill Climbing agents. Ofparticular interest is the game Pandemic (2008), as the existingagents are unable to win at it.
287

Modelos y Algoritmos de Coordinación para la Planificación de Operaciones basadas en el concepto Stroke en Redes de Suministro distribuidas y con alternativas

Rius Sorolla, Gregorio Vicente 07 January 2020 (has links)
[ES] Con la globalización de los mercados y el aumento de la competitividad, la coordinación se ha convertido en un punto estratégico en la gestión de la cadena de suministro. De hecho, cada actor de la cadena de suministro ya no debe tomar decisiones sin considerar todos los eslabones, sean proveedores, proveedores de proveedores o clientes y estos internos o externos a la organización. Las cadenas de suministro son cada vez más complejas y distribuidas, compuestas por múltiples organizaciones con diferentes objetivos y políticas. La coordinación se puede lograr utilizando uno de estos dos enfoques para la toma de decisiones coordinadas: centralizada o descentralizada con un mecanismo de coordinación. Pero, las empresas son reacias a compartir información, ya sea por la confidencialidad de los datos o porque los modelos centralizados resultantes son de gran complejidad que dificultan su manejo y actualización. Además, aquellas empresas que buscan tomar decisiones en tiempo real requieren de modelos ligeros y ágiles, que, con toda la información local y coordinada con el resto, permitan tomar decisiones rápidas. Las empresas interesadas en la coordinación descentralizada con un mecanismo de coordinación esperan obtener mejores resultados con respecto a la no coordinación, aunque deberían asumir tener peores resultados que con la coordinación centralizada. Para ello en esta tesis, se han estudiado los distintos mecanismos de coordinación para la toma de decisiones descentralizada, dentro de un entorno del procedimiento de horizontes rodantes y con herramienta de planificación y programación de las operaciones basada en el concepto de stroke, que extiende el concepto de lista de materiales más allá de las estructuras tradicionales. Estos permiten desarrollar la formulación de la programación matemática y los mecanismos de coordinación necesarios para resolver los problemas de planificación de operaciones. Esta tesis se presenta como una secuencia de capítulos, con el objeto de analizar y presentar la propuesta de mecanismo de coordinación distribuido con unos recursos compartidos. Los distintos capítulos han servido de base para la preparación de artículos científicos. Estos artículos han sido presentados en congresos de la materia y remitidos a revistas científicas. / [CA] Amb la globalització dels mercats i l'augment de la competitivitat, la coordinació s'ha convertit en un punt estratègic en la gestió de la cadena de subministrament. De fet, cada actor de la cadena de subministrament ja no ha de prendre decisions sense considerar totes les baules, siguen proveïdors, sub-proveïdors o clients i aquests interns o externs a l'organització. Les cadenes de subministrament són cada vegada més complexes i distribuïdes, compostes per múltiples organitzacions amb diferents objectius i polítiques. La coordinació es pot aconseguir utilitzant un d'aquests dos enfocaments per a la presa de decisions coordinades: centralitzat o descentralitzat amb un mecanisme de coordinació. Però, les empreses són poc inclinades a compartir informació, ja siga per la confidencialitat de les dades o perquè els models centralitzats resultants són de gran complexitat que dificulten el seu maneig i actualització. A més, aquelles empresa que busquen prendre decisions en temps real requereixen de models lleugers i àgils, que, amb tota la informació local i coordinada amb la resta, permeten prendre decisions ràpides. Les empreses interessades en la coordinació descentralitzada amb un mecanisme de coordinació esperen obtindre millors resultats respecte de la no coordinació encara que haurien d'assumir tindre pitjors resultats que amb la coordinació centralitzada. Per a això en aquesta tesi, s'han estudiat els diferents mecanismes de coordinació per a la presa de decisions descentralitzada, dins d'un entorn d'horitzons rodant i amb eines de planificació i programació de les operacions basada en el concepte de stroke, que estén el concepte de llista de materials més enllà de les estructures tradicionals. Aquests permeten desenvolupar la formulació de la programació matemàtica i els mecanismes de coordinació necessaris per a resoldre els problemes de planificació d'operacions. Aquesta tesi es presenta com una seqüència de capítols, a fi d'analitzar i presentar la proposta de mecanisme de coordinació distribuït amb uns recursos compartits. Els diferents capítols han servit de base per a la preparació d'articles científics. Aquests articles han sigut presentats en congressos de la matèria i remesos a revistes científiques. / [EN] With the globalization of markets and the increase of competitiveness, coordination has become a strategic point in the management of the supply chain. In fact, each actor in the supply chain must no longer make decisions without considering all the links, whether suppliers, sub-suppliers or customers and those internal or external to the organization. Supply chains are increasingly complex and distributed, composed of multiple organizations with different objectives and policies. Coordination can be achieved using one of these two approaches to coordinate decision making: centralized or decentralized with a coordination mechanism. However, companies are reluctant to share information, either because of the confidentiality of the data or because the resulting centralized models are of great complexity that make their management and update them. In addition, those companies that seek to make decisions in real time require lightweight and agile models, which, with all the local information and coordinated with the rest, allow quick decisions. Companies interested in decentralized coordination with a coordination mechanism expect to obtain better results regarding non-coordination although they should assume to have worse results than with centralized coordination. To this end, in this thesis, the different coordination mechanisms for decentralized decision making have been studied, within an environment of rolling horizons and with tools for planning and scheduling operations based on the concept of stroke, which extends the concept of list of materials beyond traditional structures. These allow to develop the formulation of the mathematical programming and the coordination mechanisms necessary to solve the operations planning problems. This thesis is presented as a sequence of chapters, in order to analyse and present the proposal of distributed coordination mechanism with shared resources. The different chapters have served as the basis for the preparation of scientific articles. These articles have been presented at congresses of the subject and submitted to scientific journals. / Rius Sorolla, GV. (2019). Modelos y Algoritmos de Coordinación para la Planificación de Operaciones basadas en el concepto Stroke en Redes de Suministro distribuidas y con alternativas [Tesis doctoral]. Universitat Politècnica de València. https://doi.org/10.4995/Thesis/10251/134017
288

Ambulance Service 2030 : the future of paramedics

Newton, Andrew January 2014 (has links)
Some innovations are termed ‘disruptive’, a designation that is normally applied to technology; examples include computers, digital cameras, and mobile phones. The term can also be applied to groups of workers, particularly if they are able to offer specific technical capabilities within a market at lower cost, but broadly equal and effective to that offered by traditional products or services. Paramedics could be described in this way and are a newly professionalised group, with distinctive capabilities in terms of responding to the needs of not just the acutely ill and injured, but increasingly those patients with undifferentiated non-life- threatening conditions, which increasingly make up the bulk of 999 call demand. The key to their transition from an artisan, skilled worker to professional status is the acquisition of certain ‘hallmarks’. Perhaps the most important of these is the completion of more prolonged education that affords the opportunity to graduate with enhanced decision-making and other clinical skills in order to meet the needs of the full spectrum of patients in the pre-hospital setting. Paramedics were surveyed to determine how they rated their ‘traditional’ preparation and to establish what their attitudes were to a more educationally based approach. Paramedics themselves proved to be realistic regarding shortcomings in established training and education systems, while also being strongly motivated to learn more within a higher education setting, particularly if this additional effort would result in being able to offer a wider range of care to their patients. During the study, major changes in the health care environment and the role of the Ambulance Service took place, leading to a requirement to undertake a second phase of research. This took the form of ‘Horizon Scanning’ in an attempt to detect ‘signals’, themes and trends in relation to newly emerging ‘competitors’ to the paramedic role. These included nursing, new practitioners and most critically, the rapidly emerging medical sub-speciality of pre-hospital care, staffed by medical personnel on a pattern found specifically in some European countries, sometimes termed the ‘Franco-German’ model/System (FGM/S). Hitherto, the model of provision in the UK had followed the ‘Anglo-American’ model/System (AAM/S), approach, with paramedics providing direct patient care in the field and medical staff largely involved in medical oversight, teaching, clinical governance and other higher level roles. As part of this research, the evidence base for change was examined and consideration given to the factors that might help clarify what the likely situation could be in 2030 in respect of ambulance services, pre-hospital care and paramedics. This future is uncertain, but factors have been identified that would militate in favour of one or other model prevailing, with close links established between educational preparation, system design, career structure and the continuance of the professionalisation process favouring paramedic progression. However, other factors, most specifically professional power, the absence of a clear evidence base and an apparent reluctance to clearly acknowledge this in some respects, lead to the conclusion that the future of pre-hospital care remains uncertain and contested, but also potentially amenable to a well-directed influencing strategy.
289

此在的時間性與存有的超越界域──對《存有與時間》的一個探究

陳昀鍾 Unknown Date (has links)
本論文作為對《存有與時間》的一個探究,其研究焦點主要是針對《存有與時間》第一部的寫作計畫──藉由時間性詮釋此在,解說時間之為存有問題的超越界域──探究為何任何一種存有理解皆必須以時間為其可能界域?我首先闡釋了存有理解的可能性條件──此在的時間性,而其所綻出的超越界域,乃是存有的時間狀態,此在理解投設存有之所在。不過,在海德格的前期思路中,尚未超出界域思維,徹底達致存有自身,對於這部分我將從後期思維加以補充說明。
290

讀者理解與文本結構之交流過程──以閱讀金庸武俠小說之「美感體驗」為例 / Readers' aesthetic experience in reading Jing Yong's swordplay fictions: A reception-theory approach

賴玉釵, Lai, Yu-Chai Unknown Date (has links)
本文考察「美感體驗」意涵及發展脈絡,從審美哲學取經並依「接收美學」典範為思辨對象。該典範先賢Jauss等人認為「美感體驗」乃是「審美視域」與「文本結構」交流之產物,故「美感傳播」涉及「審美視域」、「文本結構」、「交流層次」與「美感體驗」等四者。慮及Jauss及其業師Gadamer盼望從華人文化角度了解詮釋過程又如何涵育出特定「美感體驗」,本研究訪談了16位文史科班出身之華人讀者,並選取武俠類型為讀本以理解賞析歷程。 研究發現如下: 就「審美視域」言之,華人讀者審美期待受效果歷史之約制,亦受「使用媒體經驗」、「五感聯想」、「生命週期」與「閱讀史」引導。 就讀者與文本交流之層次言之,華人讀者之創造、渲洩與否定等交流方式多少受在地文化影響。以「渲洩」為例,華人讀者可基於儒家文化或崇尚集群價值觀而「認同」角色,或因期待「皆大歡喜」結局故難接納悲劇而影響「淨化」之交流歷程,再若民族情感與集體記憶等亦扮演關鍵角色。 就「美感體驗」意涵言之,「美感」之本質實與特定社群相關,為當時語境與歷史脈絡所化育之產物。另「美感」之剖析角度亦與在地文化相繫,如華人讀者可從儒、釋、道等基底論及「美」具無常等成份,異於基督教文明強調「沐浴神恩」之感。就「美感」之功用言之,相異社群之讀者亦持不同觀點,如儒家文化涵育下讀者肯定美與「維繫倫常」及「提昇個人修為」相繫,基督教文明陶養之讀者則認為美具「社會整合」或「救贖」之效。 總體言之,本研究以華人讀者之審美歷程為省思起點,從在地角度探索接收美學可再發展之理論、研究方法與實務意涵。本研究認為,閱聽人之情感、生命階段與閱讀史均在審美歷程扮演要角,此為先前接收美學典範較少著墨之處。

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