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Investigation of New Forward Osmosis Draw Agents and Prioritization of Recent Developments of Draw Agents Using Multi-Criteria Decision AnalysisYu, Jodie Wei 01 June 2020 (has links) (PDF)
Forward osmosis (FO) is an emerging technology for water treatment due to their ability to draw freshwater using an osmotic pressure gradient across a semi-permeable membrane. However, the lack of draw agents that could both produce reasonable flux and be separated from the draw solution at a low cost stand in the way of widespread implementation. This study had two objectives: evaluate the performance of three materials — peptone, carboxymethyl cellulose (CMC), and magnetite nanoparticles (Fe3O4 NPs) — as potential draw agents, and to use multi-criteria decision matrices to systematically prioritize known draw agents from literature for research investigation. Peptone showed water flux and reverse solute flux values comparable to other organic draw agents. CMC’s high viscosity made it impractical to use and is not recommended as a draw agent. Fe3O4 NPs showed average low fluxes (e.g., 2.14 LMH) but discrete occurrences of high flux values (e.g., 14 LMH) were observed during FO tests. This result indicates that these nanoparticles have potential as draw agents but further work is needed to optimize the characteristics of the nanoparticle suspension. Separation of the nanoparticles from the product water using coagulation was shown to be theoretically possible if only electrostatic and van der Waals forces are taken into account, not steric repulsion. If coagulation is to be considered for separation, research efforts on development of nanoparticle suspensions as FO draw agents should focus on development of electrostatically stabilized nanoparticles. A combination of Fe3O4 NP and peptone showed a higher flux than Fe3O4 NPs alone, but did not produce additive or synergistic flux. This warrants further research to investigate more combinations of draw agents to achieve higher flux than that obtained by individual draw agents.
Potential draw agents were prioritized by conducting a literature review of draw agents, extracting data on evaluation criteria for draw agents developed over the past five years, using these data to rank the draw agents using the Analytical Hierarchy Process (AHP) and Technique for Order of Preference by Similarity to Ideal Solutions (TOPSIS). The evaluation criteria used in the ranking matrices were water flux, reverse solute flux, replenishment cost, regeneration cost, and regeneration efficacy. The results showed that the top five ranked draw agents were P-2SO3-2Na, TPHMP-Na, PEI-600P-Na, NaCl, and NH4-CO2. The impact of the assumption made during the multi-criteria decision analysis process was evaluated through sensitivity analyses altering criterion weighting and including more criteria. This ranking system provided recommendations for future research and development on draw agents by highlighting research gaps.
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<b>MULTI-CRITERIA ANALYSIS FOR </b><b>HUMAN-LIKE </b><b>DECISION MAKING IN AUTONOMOUS VEHICLE PERATIONS</b>Aishwarya Sharma (18429147) 25 April 2024 (has links)
<p dir="ltr">Highway safety continues to pose a serious challenge to the social sustainability of transportation systems, and initiatives are being pursued at all levels of government to reduce the high fatality count of 42,000. At the same time, it is sought to ensure higher travel efficiency in order to increase economic productivity. The emergence of automated transportation provides great promise to mitigate these ills of the transportation sector that have persisted for so many decades. With regards to safety, such promise is rooted in the capability of autonomous vehicles to self-drive some or all of the time, thus reducing the impact of inherently errant human driving to which 95% of all crashes have been attributed. With regards to mobility, such promise is guided by the capability of the autonomous vehicle to carry out path planning, navigation, and vehicle controls in ways that are far more efficient than the human brain, thereby facilitating mobility and reducing congestion-related issues such as delay, emissions, driver frustration, and so on.</p><p dir="ltr">Unfortunately, the two key outcomes (safety and mobility) are reciprocal in the sense that navigation solutions that enhance safety generally tend to reduce mobility, and vice versa. As such, there is a need to assign values explicit to these performance criteria in order to develop balanced solutions for AV decisions. Most existing machine-learning-based path planning algorithms derive these weights using a learning approach. Unfortunately, the stability of these weights across time, individuals, and trip types, is not guaranteed. It is necessary to develop weights and processes that are trip situation-specific. Secondly, user trust in automation remains a key issue, given the relatively recent emergence of this technology and a few highly-publicized crashes, which has led to reservations among potential users.</p><p dir="ltr">To address these research questions, this thesis identifies various situational contexts of the problem, identifies the alternatives (the viable trajectories by fitting curves between the vehicle maneuver’s initial and final positions), develops the decision criteria (safety, mobility, comfort), carries out weighting of the criteria to reflect their relative significance, and scales the criteria to develop dimensionless equivalents of their raw values. Finally, a process for amalgamating the overall impacts of each driving decision alternative is developed based on the weighted and scaled criteria, to identify the best decision (optimal trajectory path). This multi-criteria decision making (MCDM) problem involves the collection of data through questionnaire surveys.</p><p dir="ltr">The weights obtained early in the MCDM process could be integrated into any one of two types of planning algorithms. First, they could be incorporated into interpolating curve-based planning algorithms, to identify the optimal trajectory based on human preferences. Additionally, they can be integrated into optimization-based planning algorithms to allocate weights to the various functions used.</p><p dir="ltr">Overall, this research aims to align the behavior of autonomous vehicles closely with human-driven vehicles, serving two primary purposes: first, facilitating their seamless coexistence on mixed-traffic roads and second, enhancing public acceptance of autonomous vehicles.</p>
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Assessing the Landscape of EU Carbon Pricing Regulations on Suppliers Selection Process : A case study at H2GSJohansson, Albin, Hyllienmark, Tom January 2024 (has links)
This thesis investigates the regulatory impact of the EU ETS and CBAM regulations on supplier selection processes for procuring iron ore pellets, lime, and ferromanganese from 2025 to 2035. The study is set within the context of evolving EU environmental regulations, emphasizing the importance of understanding their effects on procurement practices in the steel industry. Employing quantitative multi-criteria decision-making (MCDM) through a TOPSIS analysis, the study evaluates suppliers over the specified timeframe based on market price, emissions, shipping cost, and regulatory cost. Additionally, a comprehensive review of current literature within the research area is provided. The methodology section details the research approach, design, data collection, and research quality. A case study conducted at H2 Green Steel, including company background and project execution, is also outlined. The results indicate potential changes over time due to the regulatory effects of the EU ETS and CBAM, with a sensitivity analysis exploring various weight scenarios of TOPSIS results to understand the relationship between the selected criteria. The analysis highlights advantages in integrating sustainability into procurement practices, driven by regulatory incentives. These findings suggest significant implications for procurement managers, emphasizing the importance of considering regulatory costs in supplier selection and adopting long-term monitoring of regulatory changes in the EU ETS and CBAM regulations. The study's implications are discussed in terms of validity, reliability, practical application, and future research directions.
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A multi-criteria decision support system using knowledge management and project life cycle approach : application to humanitarian supply chain management / La conception et l’implémentation d’un outil d’aide a la décision multicritères intégrant les concepts de la gestion des connaissances et du cycle de vie : application de la chaîne d'approvisionnement humanitaireSaksrisathaporn, Krittiya 25 September 2015 (has links)
Cette thèse vise à contribuer à la compréhension des cycle de vie d’une opération humanitaire (HOLC). Gestion de la chaîne d'approvisionnement humanitaire (HSCM) dans un contexte de mise en perspective et dans l’objectif de proposer un modèle décisionnel qui s'applique aux phases de HOLC lors d’une situation réelle. Cela inclut la mise en oeuvre du modèle proposé pour concevoir et développer un outil d'aide à la décision afin d'améliorer les performances de la logistique humanitaire tant dans les opérations de secours nationaux qu’internationaux.Cette recherche est divisée en trois phases. La première partie vise à présenter le sens de l'étude ; la zone de recherche prise en compte pour la gestion de la chaîne d'approvisionnement (SCM) doit être clairement définie. La première phase consiste à clarifier et définir le HSCM HL, la gestion de la chaîne d'approvisionnement commerciale (CSCM) et le SCM, ainsi que la relation entre ces différents éléments. La gestion du cycle de vie du projet (PLCM) et les différentes approches sont également présentés. La compréhension de la différence entre la gestion du cycle de vie du projet (PLM) et la PLCM est également nécessaire, cela ne peut être abordé dans la phase de cycle de vie de l'opération humanitaire. De plus, les modèles Multiple-Criteria Decision Making (MCDM) et l’aide à la décision concernant le HL sont analysés pour établir le fossé existant en matière de recherche. Les approches MCDM qui mettent en oeuvre le système d'aide à la décision (DSS) et la manière dont le MAS a été utilisé dans le contexte HSCM sont étudiées.La deuxième phase consiste en la proposition d’un modèle décisionnel fondé sur l’approche MCDM à l'appui de la décision du décideur avant qu'il/elle prenne des mesures. Ce modèle prévoit le classement des alternatives concernant l'entrepôt, le fournisseur et le transport au cours des phases de HOLC. Le modèle décisionnel proposé est réalisée en 3 scénarios. I. La décision en 4phases HOLC – opération de secours internationale de la Croix-Rouge Française (CRF). II. La décision en3phases HOLC – opération nationale dela Croix-Rouge thaïlandaise (TRC). III. La décision au niveau de la phase de réponse HOLC – opération internationale du TRC dans quatre pays. Dans cette phase, le scénario I et II sont réalisés étape par étape au travers de calculs numériques et formules mathématiques. Le scénario III sera présenté dans la troisième phase. Pour établir trois scénarios, les données internes recueillies lors des entretiens avec le chef de la logistique de la Croix-Rouge Française, et le vice-président de la fondation de la Coix-Rouge thaïlandaise, seront utilisées. Les données externes proviennent de chercheurs qui sont des experts dans le domaine HL ou le champ du HSCM, de la littérature, et de sources issues des organismes humanitaires (documents d’ateliers, rapports, informations publiées sur leurs sites officiels).Dans la troisième phase, une application Internet multi-critères (decision support system MCDSS WB) mettant en oeuvre le modèle proposé est élaborée. Afin d'atteindre une décision appropriée en temps réel, le WB-MCDSS est développé sur la base d’un protocole client-serveur et est simple à utiliser. Le dernier mais non le moindre ; une application de validation du modèle est réalisée à l'aide de l'approche de l'analyse de sensibilité. / This thesis aims to contribute to the understanding of HOLC in context of the HSCM and to propose a decision model which applies to the phases of HOLC the decision making regarding a real situation . This include the implementation of the proposed model to design and develop a decision support tool in order to improve the performance of humanitarian logistics in both national and international relief operations.This research is divided into three phases; the first phase is to clarify and define HL among HSCM, commercial supply chain management (CSCM) and SCM and their relationship. Project Life Cycle Management (PLCM) approaches are also presented. The difference between project life cycle management (PLM) and PLCM is also required to distinguish a clear understanding which can be addressed in the phase of humanitarian operation life cycle. Additionally, the literature of Multiple-Criteria Decision Making (MCDM) models and existing decision aid system for HL are analyzed to establish the research gap. The MCDM approaches which implement the decision support system (DSS) and lastly how DSS has been used in the HSCM context.The second phase is to propose a decision model based on MCDM approaches to support the decision of the decision maker before he/she takes action. This model provides the ranking alternatives to warehouse, supplier and transportation over the phases of HOLC. The proposed decision model is conducted in 3 scenarios; I. The decision in 4-phase HOLC, international relief operation of French Red Cross (FRC). II. The decision on 3-phase HOLC, national operation by the Thai Red Cross (TRC). III. The decision on response phase HOLC, international operation by the FRC in four countries. In this phase, the scenario I and II are performed step by step though numerical calculation and mathematical formulas. The scenario III will be presented in the third phase.In the third phase, an application of web-based multi-criteria decision support system (WB-MCDSS) which implement the proposed model is developed. The web-based multi-criteria decision support system is developed based on the integration of analytical hierarchy process (AHP) and TOPSIS approaches. In order to achieve an appropriate decision in a real time response, the WB-MCDSS is developed based on server-client protocol and is simple to operate. Last but not least, a validation application of the model is performed using the sensitivity analysis approach.
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Models and Algorithms for the Optimisation of Replenishment, Production and Distribution Plans in Industrial EnterprisesGuzmán Ortiz, Brunnel Eduardo 10 October 2022 (has links)
Tesis por compendio / [ES] La optimización en las empresas manufactureras es especialmente importante, debido a las grandes inversiones que realizan, ya que a veces estas inversiones no obtienen el rendimiento esperado porque los márgenes de beneficio de los productos son muy ajustados. Por ello, las empresas tratan de maximizar el uso de los recursos productivos y financieros minimizando el tiempo perdido y, al mismo tiempo, mejorando los flujos de los procesos y satisfaciendo las necesidades del mercado.
El proceso de planificación es una actividad crítica para las empresas. Esta tarea implica grandes retos debido a los cambios del mercado, las alteraciones en los procesos de producción dentro de la empresa y en la cadena de suministro, y los cambios en la legislación, entre otros.
La planificación del aprovisionamiento, la producción y la distribución desempeña un papel fundamental en el rendimiento de las empresas manufactureras, ya que una planificación ineficaz de los proveedores, los procesos de producción y los sistemas de distribución contribuye a aumentar los costes de los productos, a alargar los plazos de entrega y a reducir los beneficios. La planificación eficaz es un proceso complejo que abarca una amplia gama de actividades para garantizar que los equipos, los materiales y los recursos humanos estén disponibles en el momento y el lugar adecuados.
Motivados por la complejidad de la planificación en las empresas manufactureras, esta tesis estudia y desarrolla herramientas cuantitativas para ayudar a los planificadores en los procesos de la planificación del aprovisionamiento, producción y distribución. Desde esta perspectiva, se proponen modelos realistas y métodos eficientes para apoyar la toma de decisiones en las empresas industriales, principalmente en las pequeñas y medianas empresas (PYMES).
Las aportaciones de esta tesis suponen un avance científico basado en una exhaustiva revisión bibliográfica sobre la planificación del aprovisionamiento, la producción y la distribución que ayuda a comprender los principales modelos y algoritmos utilizados para resolver estos planes, y pone en relieve las tendencias y las futuras direcciones de investigación. También proporciona un marco holístico para caracterizar los modelos y algoritmos centrándose en la planificación de la producción, la programación y la secuenciación. Esta tesis también propone una herramienta de apoyo a la decisión para seleccionar un algoritmo o método de solución para resolver problemas concretos de la planificación del aprovisionamiento, producción y distribución en función de su complejidad, lo que permite a los planificadores no duplicar esfuerzos de modelización o programación de técnicas de solución. Por último, se desarrollan nuevos modelos matemáticos y enfoques de solución de última generación, como los algoritmos matheurísticos, que combinan la programación matemática y las técnicas metaheurísticas.
Los nuevos modelos y algoritmos comprenden mejoras en términos de rendimiento computacional, e incluyen características realistas de los problemas del mundo real a los que se enfrentan las empresas de fabricación. Los modelos matemáticos han sido validados con un caso de una importante empresa del sector de la automoción en España, lo que ha permitido evaluar la relevancia práctica de estos novedosos modelos utilizando instancias de gran tamaño, similares a las existentes en la empresa objeto de estudio. Además, los algoritmos matheurísticos han sido probados utilizando herramientas libres y de código abierto. Esto también contribuye a la práctica de la investigación operativa, y proporciona una visión de cómo desplegar estos métodos de solución y el tiempo de cálculo y rendimiento de la brecha que se puede obtener mediante el uso de software libre o de código abierto. / [CA] L'optimització a les empreses manufactureres és especialment important, a causa de les grans inversions que realitzen, ja que de vegades aquestes inversions no obtenen el rendiment esperat perquè els marges de benefici dels productes són molt ajustats. Per això, les empreses intenten maximitzar l'ús dels recursos productius i financers minimitzant el temps perdut i, alhora, millorant els fluxos dels processos i satisfent les necessitats del mercat.
El procés de planificació és una activitat crítica per a les empreses. Aquesta tasca implica grans reptes a causa dels canvis del mercat, les alteracions en els processos de producció dins de l'empresa i la cadena de subministrament, i els canvis en la legislació, entre altres.
La planificació de l'aprovisionament, la producció i la distribució té un paper fonamental en el rendiment de les empreses manufactureres, ja que una planificació ineficaç dels proveïdors, els processos de producció i els sistemes de distribució contribueix a augmentar els costos dels productes, allargar els terminis de lliurament i reduir els beneficis. La planificació eficaç és un procés complex que abasta una àmplia gamma d'activitats per garantir que els equips, els materials i els recursos humans estiguen disponibles al moment i al lloc adequats.
Motivats per la complexitat de la planificació a les empreses manufactureres, aquesta tesi estudia i desenvolupa eines quantitatives per ajudar als planificadors en els processos de la planificació de l'aprovisionament, producció i distribució. Des d'aquesta perspectiva, es proposen models realistes i mètodes eficients per donar suport a la presa de decisions a les empreses industrials, principalment a les petites i mitjanes empreses (PIMES).
Les aportacions d'aquesta tesi suposen un avenç científic basat en una exhaustiva revisió bibliogràfica sobre la planificació de l'aprovisionament, la producció i la distribució que ajuda a comprendre els principals models i algorismes utilitzats per resoldre aquests plans, i posa de relleu les tendències i les futures direccions de recerca. També proporciona un marc holístic per caracteritzar els models i algorismes centrant-se en la planificació de la producció, la programació i la seqüenciació. Aquesta tesi també proposa una eina de suport a la decisió per seleccionar un algorisme o mètode de solució per resoldre problemes concrets de la planificació de l'aprovisionament, producció i distribució en funció de la seua complexitat, cosa que permet als planificadors no duplicar esforços de modelització o programació de tècniques de solució. Finalment, es desenvolupen nous models matemàtics i enfocaments de solució d'última generació, com ara els algoritmes matheurístics, que combinen la programació matemàtica i les tècniques metaheurístiques.
Els nous models i algoritmes comprenen millores en termes de rendiment computacional, i inclouen característiques realistes dels problemes del món real a què s'enfronten les empreses de fabricació. Els models matemàtics han estat validats amb un cas d'una important empresa del sector de l'automoció a Espanya, cosa que ha permés avaluar la rellevància pràctica d'aquests nous models utilitzant instàncies grans, similars a les existents a l'empresa objecte d'estudi. A més, els algorismes matheurístics han estat provats utilitzant eines lliures i de codi obert. Això també contribueix a la pràctica de la investigació operativa, i proporciona una visió de com desplegar aquests mètodes de solució i el temps de càlcul i rendiment de la bretxa que es pot obtindre mitjançant l'ús de programari lliure o de codi obert. / [EN] Optimisation in manufacturing companies is especially important, due to the large investments they make, as sometimes these investments do not obtain the expected return because the profit margins of products are very tight. Therefore, companies seek to maximise the use of productive and financial resources by minimising lost time and, at the same time, improving process flows while meeting market needs.
The planning process is a critical activity for companies. This task involves great challenges due to market changes, alterations in production processes within the company and in the supply chain, and changes in legislation, among others.
Planning of replenishment, production and distribution plays a critical role in the performance of manufacturing companies because ineffective planning of suppliers, production processes and distribution systems contributes to higher product costs, longer lead times and less profits. Effective planning is a complex process that encompasses a wide range of activities to ensure that equipment, materials and human resources are available in the right time and the right place.
Motivated by the complexity of planning in manufacturing companies, this thesis studies and develops quantitative tools to help planners in the replenishment, production and delivery planning processes. From this perspective, realistic models and efficient methods are proposed to support decision making in industrial companies, mainly in small- and medium-sized enterprises (SMEs).
The contributions of this thesis represent a scientific breakthrough based on a comprehensive literature review about replenishment, production and distribution planning that helps to understand the main models and algorithms used to solve these plans, and highlights trends and future research directions. It also provides a holistic framework to characterise models and algorithms by focusing on production planning, scheduling and sequencing. This thesis also proposes a decision support tool for selecting an algorithm or solution method to solve concrete replenishment, production and distribution planning problems according to their complexity, which allows planners to not duplicate efforts modelling or programming solution techniques. Finally, new state-of-the-art mathematical models and solution approaches are developed, such as matheuristic algorithms, which combine mathematical programming and metaheuristic techniques.
The new models and algorithms comprise improvements in computational performance terms, and include realistic features of real-world problems faced by manufacturing companies. The mathematical models have been validated with a case of an important company in the automotive sector in Spain, which allowed to evaluate the practical relevance of these novel models using large instances, similarly to those existing in the company under study. In addition, the matheuristic algorithms have been tested using free and open-source tools. This also helps to contribute to the practice of operations research, and provides insight into how to deploy these solution methods and the computational time and gap performance that can be obtained by using free or open-source software. / This work would not have been possible without the following funding sources: Conselleria de Educación, Investigación, Cultura y Deporte, Generalitat Valenciana for hiring predoctoral research staff with Grant (ACIF/2018/170) and the European Social Fund with the Grant Operational Programme of FSE 2014-2020. Conselleria de Educación, Investigación, Cultura y Deporte, Generalitat Valenciana for predoctoral contract students to stay in research centers outside the research centers outside the Valencian Community (BEFPI/2021/040) and the European Social Fund. / Guzmán Ortiz, BE. (2022). Models and Algorithms for the Optimisation of Replenishment, Production and Distribution Plans in Industrial Enterprises [Tesis doctoral]. Universitat Politècnica de València. https://doi.org/10.4995/Thesis/10251/187461 / TESIS / Compendio
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Avaliação de desempenho em instituições de ensino técnico com apoio da técnica de similaridade com solução idealVieira, Marcello Silveira 30 May 2016 (has links)
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Previous issue date: 2016-05-30 / Os programas de excelência utilizados para avaliar instituições de ensino técnico profissionalizante, hoje não mais buscam somente a eficiência de uma gestão para objetivos pedagógicos. Atualmente, os critérios de excelência dos serviços educacionais têm foco multifuncional, buscando resultados em várias dimensões. Neste sentido, o objetivo da dissertação consiste em apresentar uma proposta metodológica que permita subsidiar as decisões no processo de avaliação de desempenho em uma instituição de ensino técnico, por meio da aplicação da técnica de similaridade com solução ideal (na língua inglesa, Technique for Order Preference by Similarity to Ideal Solution - TOPSIS). Como opção metodológica, foi desenvolvida uma pesquisa exploratória para levantamento de dados primários, seguida de aplicação da sistemática proposta e respectiva análise dos resultados obtidos. Como principal produto foi gerado um diagnóstico, por cada dimensão proposta, bem como foi possível à obtenção de um indicador global (SCORE TOPSIS) que contribuiu com um instrumento de análise comparativa do desempenho de 39 unidades operativas de uma instituição de ensino ofertante de cursos técnicos de nível médio profissionalizante. / Excellence programs used to evaluate vocational technical education institutions, today no longer seek only the efficiency of management for educational purposes. Currently, the criteria of excellence of educational services have multi-functional focus, seeking results in various dimensions. In this sense, the purpose of this work is to present a methodology that allows support the decisions in the performance evaluation process in a technical education institution by applying Technique for Order Preference by Similarity to Ideal Solution - TOPSIS. As a methodological option, an exploratory research was developed for primary data collection, followed by application of systematic proposal and its analysis of the results. As the main product has generated a diagnosis for each dimension proposal, and it was possible to obtain a global indicator (SCORE TOPSIS) which contributed a benchmarking instrument performance of 39 operating units of an educational institution offerer technical courses vocational high school.
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改善筆記型電腦抗耐摔性之研究黃煜尹, Huang,Yu-Yin Unknown Date (has links)
隨著資訊科技的發展,筆記型電腦已經愈來愈普及,且價格不再高不可攀,消費者在選購電腦時,會以筆記型電腦取代桌上型電腦,因此消費者的購買意願增加,如何吸引消費者的購買意願,是目前許多企業所面臨的問題。消費者在購買產品前所考慮因素以品質最為重要。電腦公司若能提供品質保證,勢必能增加消費者購買的意願。
筆記型電腦為高精密與高價值的產品,攜帶方便為此產品的特色。由於攜帶方便的特性,顧客可以攜帶著筆記型電腦工作,因此一時的疏忽常對筆記型電腦造成損害,其中以外力所造成之損害最為嚴重,包括衝擊碰撞與摔落碰撞。
本研究以北縣某筆記型電腦製造公司之客戶維修資料與公司摔落測試之統計,以液晶螢幕燈管和玻璃損壞之成本最高。所以本論文主要目的希望能研究出筆記型電腦摔落之最佳保護設計,減低摔落所造成之損壞。針對研究之筆記型電腦抗摔落問題規劃防摔角墊實驗以收集相關數據,並利用以下六種不同的分析方法,(1)變異數分析結合迴歸分析方法、(2)田口方法、(3)田口損失函數法、(4)倒傳遞類神經網路法、(5)模糊結合TOPSIS法與(6)模糊結合類神經網路法,分別決定最適防摔角墊組合,並比較其最適防摔角墊組合之異同。倘若這六種分析方法結果不盡相同,則再規劃實驗以求得最適角墊硬度與面積,得到最適防摔角墊組合。
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Praktické využití metod vícekriteriálního rozhodování pro zhodnocení obchodních řetězců, kategorie sýry, v České republice / Practical use of multiple criteria decision making methods to evaluate commercial chains, cheese category, in Czech RepublicSlavík, Vladimír January 2008 (has links)
The subject of diploma thesis is the evaluation of commercial chains, cheese category, in Czech Republic. The methodology is based on the multicriteria rating of alternatives. In the evaluation of commercial chains may take into account the large number of criteria are used, here are 26, which evaluates 14 alternatives (stores). To evaluate the commercial chains are used preferences of general public and experts. The main objective of the diploma thesis is to determine which store is the best for customers (general public) and for professionals, and then to compare the results.Secondary objective is to explore the possibility of using the multicriteria rating of alternatives methods in praxis.
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Residential Low Impact Development Practices: Literature Review and Multicriteria Decision Analysis Framework for Detached HousesSumaiya, Ummay January 2021 (has links)
Low Impact Development (LID) is a sustainable stormwater management approach that aims to control runoff close to its source, mimicking the natural hydrological processes such as infiltration and storage. It is being adopted by many cities, where its implementation is rapidly evolving. The LID practices are small-scale measures; therefore, they need to be widely implemented to impact significantly. The selection of LIDs depends on the land use and characteristics of the area of interest. This study focuses on residential LIDs. First, a systematic and bibliometric literature review is conducted on the residential LIDs articles published up to the year 2020; a total of 94 papers were found in the Web of Science. This review resulted that LID implementation in residential areas still needs to be investigated. To assist the City, engineers, and policy-makers in implementing the suitable LIDs for detached houses, a multi-criteria decision analysis framework incorporating a hydrological model is developed in this study. The commonly used LIDs were identified, which are rain gardens, permeable pavement, rain barrels, soakaways. Seven criteria were selected – runoff depth reduction rate, peak runoff reduction rate, installation cost, maintenance cost, retrofit cost, life cycle, and aesthetical view. For the properties of the single-detached house and LIDs, the standards of Credit Valley Conservation (CVC) and Toronto and Region Conservation Authority (TRCA) were followed. The proposed decision-making framework also was applied to a case study. This framework is still in the preliminary stage, thus holds the potential to convert into a tool that will be handy enough for the homeowners and consume less time. / Thesis / Master of Applied Science (MASc)
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PETIC Decision Making (PDM) : um modelo automatizado para apoio à tomada de decisão estratégica em TICRocha, Fabio Gomes 09 February 2017 (has links)
Strategic planning is essential for the management of Information and Communication
Technologies in organizations, providing more assertive decisions to establish the basic
purposes of improvement and implementation of new resources. The goal of this study was
the adaptation of the Technique for Order Preference by Similarity to Ideal Solution
(TOPSIS) in the creation of a new model to support decision making on the prioritization of
investments in strategic planning of Information and Communication Technologies as a
support to the methodology PETIC, called PETIC Decision Make (PDM), evaluating its
applicability in real case studies. The investigated institutions were a municipal public
administration body and a labor union entity, where the PDM was used in the prioritization of
investments for the period of five years, using the tool PDMSys created in this study. By
means of the proposed method was possible to select alternatives of actions considered
preferable and to analyze their dependencies, besides creating a continuous cycle for
classification. The results indicated the practicability of the method, avoiding an indication
that the dependencies would jeopardize the investment in technologies. In this way, it was
verified that the application of the PDM increases the predictability of expenditures, allows
the reduction of initial costs and contributes to the assertiveness in the decisions on the
management of the technological resources, implying in the global management of the
institutions. / O planejamento estratégico é essencial para a gestão das Tecnologias da Informação e
Comunicação nas organizações, proporcionando decisões mais assertivas para o
estabelecimento dos propósitos básicos de melhoria e implementação de novos recursos.
Abordando o tema, o objetivo deste estudo foi a adaptação do Technique for Order Preference
by Similarity to Ideal Solution (TOPSIS) na criação de um novo modelo de apoio à tomada de
decisão sobre a priorização de investimentos em planejamento estratégico de Tecnologias da
Informação e Comunicação como suporte à metodologia PETIC, denominado PETIC
Decision Make (PDM), avaliando sua aplicabilidade em estudos de caso real. As instituições
investigadas foram um órgão da administração pública municipal e uma entidade sindical,
onde se empregou o PDM na priorização de investimentos para o período de cinco anos,
utilizando-se a ferramenta PDMSys criada neste estudo. Por meio do método proposto foi
possível selecionar alternativas de ações consideradas preferíveis e analisar as suas
dependências, além de criar um ciclo contínuo para ordená-las. Os resultados indicaram a
praticabilidade do método, evitando indicação em que as dependências prejudicassem o
investimento em tecnologias. Dessa forma, constatou-se que a aplicação do PDM amplia a
previsibilidade sobre os gastos, possibilita a redução de custos iniciais e contribui para a
assertividade nas decisões sobre a gestão dos recursos tecnológicos, implicando na gestão
global das instituições.
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