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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.
1

Seafloor Massive Sulphides: Assessment of Sustainable Mining Potential through an Iterative Decision-making Framework

AVERY, CHRISTOPHER SCOTT 12 December 2011 (has links)
Extraction of metals from the seafloor has been considered for decades, beginning with manganese nodules in the 1970s. Today, the targets are massive sulphide deposits rich in copper, zinc, gold, and silver that are associated with hydrothermal vents or black smoker chimneys that occur at divergent and convergent plate margins such as mid-ocean ridges and volcanic island arcs respectively. A recent objective of the mining industry is to develop industry practices that coincide with concepts of sustainability or sustainable development. This objective, known by some as sustainable mining, has indeed become an essential part of the commissioning of any new project, regardless of geographical location. While there has been much work on sustainable mining practice for terrestrial mining, these frameworks are not directly applicable to seafloor projects. There are two problems facing the development of a seabed mining industry. First, there is a regulatory vacuum when considering the mining of seabed deposits, leading to important policy issues. Second, the economic, environmental, and social impacts of a seabed mining project are theoretical, and the real impacts are unknown. Thus, the identification, characterization, and analysis of the sustainability issues facing a seabed mining project are essential steps. To assist with performing these three steps, this thesis provides a process model based on the IDEF0 (Integration DEFinition) standard to assess seafloor massive sulphide mining projects from sustainable mining perspectives. This adaptation of IDEF0 provides a clear, visual representation of a hierarchical framework that can be used to identify “go no-go” sustainability criteria to assist decision makers interested in the potential development of an ore body. / Thesis (Master, Mining Engineering) -- Queen's University, 2011-12-12 12:54:28.436
2

Análise de processos de engenharia do veículo de sondagem VSB-30 usando IDEF0 e CCMI

Fernando Amâncio dos Santos 19 December 2009 (has links)
Essa dissertação, motivada pelo relatório de investigação do acidente do Veículo Lançador de Satélites VLS-1 V03, nas falhas em programas espaciais estrangeiros avançados e com suas recomendações de melhoria, analisa os processos existentes e propõe processos adicionais para a engenharia de sistemas do Veículo de Sondagem VSB-30. O VSB-30 é desenvolvido pelo Instituto de Aeronáutica e Espaço. Os processos são: gerenciamento de requisitos, desenvolvimento de requisitos, soluções técnicas, verificação, integração do produto e validação. Todos os processos estão baseados na análise do atendimento às melhores práticas do CMMI (Modelo Integrado de Capabilidade e Maturidade) e da utilização da notação IDEF0. Os processos existentes foram analisados usando a notação IDEF0 com relação ao CMMI. Os processos adicionais estão baseados nas melhores práticas do CMMI usando a notação IDEF0. Melhorias foram propostas aos processos que atendiam ao CMMI, e processos adicionais e seus respectivos diagramas IDEF0 foram propostos para as áreas de processos que não são cobertas pelos processos existentes. Usando os diagramas IDEF0, métricas de produto e processo foram derivadas para serem utilizadas em desenvolvimentos futuros. A capabilidade de processos e a maturidade da organização foram avaliadas baseadas nos níveis estabelecidos pelo CMMI. As conclusões dessa dissertação são que o CMMI pode ser utilizado como um modelo de referência para avaliação do nível da capabilidade dos processos do VSB-30 e de outros veículos, bem como da maturidade da organização e, que a notação IDEF0 fornece a visibilidade necessária para identificar oportunidades para melhoria de processos como, por exemplo, um melhor gerenciamento de requisitos de sistemas e subsistemas, e a rastreabilidade dos requisitos no ciclo de vida de um programa espacial. / This thesis, based on VLS-1 V03 accident investigation report, advanced foreigner space programs faults and their improvements recommendations, analyses existing processes and proposes additional ones for the systems engineering of Sounding Rocket VSB-30. VSB-30 is developed by Instituto de Aeronáutica e Espaço. The processes are: requirements management, requirements development, technical solution, verification, product integration and validation. All processes are based on compliance with CMMI (Capability Maturity Model Integration) best practices and the use of IDEF0 notation. Existing processes were analysed in comparison with CMMI using IDEF0 notation. Processes proposed are based on CMMI best practices using the IDEF0 notation. Improvements were proposed to the process complying with CMMI and additional processes and their respective IDEF0 models were proposed to processes areas not covered by existing processes. Using IDEF0 models, product and process metrics were derived in order to serve as a reference for future developments. Process capability and organization maturity were assessed based on CMMI scale. Conclusions are that CMMI may be used as a reference model for assessing the status of current and other rocket processes capability as well as the organization maturity and that IDEF0 provides the necessary visibility for identifying opportunities for processes improvement as better systems and subsystems requirement management and the traceability of requirements during a space program life cycle.
3

Re-engineering the project procurement process through concurrent engineering

Bowron, John January 2002 (has links)
The construction industry in the United Kingdom is a multi-billion pound business that contributes, on average 10% of the UK Gross Domestic Product (GDP). However, it is seen by many to be underachieving in terms of service delivery and investment opportunities. Projects are frequently late and over budget much to the disappointment of those involved in the industry and especially clients. Many investigations have been commissioned and resulting reports have suggested improvements in the way the industry is organised. Procurement of construction projects in the main are undertaken using methods that support fragmentation and adversarial relationships. However, with the introduction of partnering and prime contracting some improvements have been made. Procurement of a construction project begins with the strategies developed during briefing and is only complete when the facility is handed over to the client, some contract strategies allow for the facility to be completed once it is in operation, has been maintained and eventually is demolished. Costings and programmes are then related to life-cycle issues and aspects such as maintenance have to be taken into account during the facility development stages. The adoption of Concurrent Engineering (CE) is seen to offer the construction industry a way forward. Having been adopted extensively by manufacturing in its product development stages a similar adoption by the construction industry would go some way to achieving the 30% improvement in real terms suggested by Latham [1994] and Egan [1998]. The research described in the thesis aims to develop a new procurement method for the delivery of construction projects. The approach adopted was to identify current methods of procurement and the problems associated with each method. Then using Concurrent Engineering as a basis, a new procurement model was developed that offered potential improvements in the construction process between the stages of Clients Briefing and Detailed Design. The resulting model was evaluated through the application of CE principles into the process and by the presentation and discussion of the method with a number of industry participants, followed by the completion and assessment of a questionnaire. The model was shown to fulfil the principles of CE and could be adopted into construction. It offers a new approach to procurement which in turn would save costs and time and potentially improve the quality of the final construction product.
4

An IDEF0 representation of a garment manufacturing system design process

Karim, Mohammed R. January 1994 (has links)
No description available.
5

透過ODS進行企業資訊系統整合之研究-以某企業為例 / Using ODS to integrate enterprise systems: A case study

黃琬婷, Huang,wan ting Unknown Date (has links)
由於科技快速進步,企業經營也隨著科技的進步而產生重大變化,不但需求變化快速,企業還要即時快速反應外在環境,於是企業對於資訊系統整合的議題越來越重視,希望將功能導向的系統轉變為流程導向的系統,將資訊有效的整合及標準化,讓企業能快速地與外在環境連結,進而提升整體營運績效。 整合的方法非常的多,大致上可分為四類。目前對於哪一種整合方法是最有效率、效益也無一定論。最主要的原因是不同的整合個案會有不同的整合需求,若只從理論方面來探討資訊系統整合所帶來的效用並無法具體地呈現其價值。 有鑑於此,本研究之目的是希望透過個案單位的作業模型,分析、建構出整合的資料模型。因此,本研究以階段性的方法設計資料整合模型及其運作方法。在第一、二階段當中,先針對個案單位的流程進行系統資料流程塑模及業務流程塑模,再從業務面及系統面找出資訊中斷的地方及因素,並將問題具體地描述出來。在第三階段中,本研究挑選了最適合此個案單位的整合方法,也就是使用資料層級(Data-Level)整合的方法,設計整合的資料模型將資訊流完整的串接起來以支援企業的決策需求。最後一階段則要利用ETL說明整合的系統運作模式,並說明此個案單位使用ETL時,可能會遇到的問題及初步的解決方法。 / Owing to rapid advances in technology, enterprises have a major change of the progress of science and technology. The enterprises not only change rapidly in demand, but also have to response to the external environment rapidly. Hence, enterprise information system integration issues get more attentions. Enterprises hope to improve their systems from function-oriented to process-oriented because the effective integration of information and standardization allows enterprises to quickly link with the external environment and to enhance the overall operating performance. However, there are many kinds of integrated approaches. At present, there is no substantive conclusion in approaches to integrate efficiently all systems in business. The main reason is that the integration of different cases has different integration requirements. Therefore, it cannot concretely show the value of system integration through the discussion of the theoretical aspects. In this thesis, this study aims to enhance the operation of a case to model, analyze, and construct an integrated data model. This research has 4 phases to construct integrated data model. In phase 1 and 2, this study builds the case data flow modeling and business process modeling and discovers information gap. In phase 3, the study selects the most suitable method for this case, that is, to use the data level integrated approach to design integrated data model. Finally, using ETL illustrates system operation mode and describes the case which may encounter problems and initial solutions follow in phase 4.
6

Modelovanje integralnog procesa zavarivanja i softverska podrška / Modeling of Integrated Welding Process and Software Support

Jovanić Dušan 29 September 2016 (has links)
<p>Doktorska disertacija razmatra modelovanje procesa zavarivanja i modelovanje podataka, koji omogućuje elektronski oblik dokumentovanih procedura, zapisa, specifikacija, planova kvaliteta i radnih uputstava. Model integralnog procesa zavarivanja je razvijen da bi se identifikovali svi faktori koji utiču na kvalitet zavarenog spoja, odnosno proizvoda od faze preispitivanja zahteva iz ugovora i tehničkog preispitivanja, podugovaranja, opreme i osoblja, procesa zavarivanja, rukovanja i skladi&scaron;tenja osnovnog i potro&scaron;nog materijala, ispitivanja, kontrole, verifikacije, kalibracije, neusagla&scaron;enosti, korektivnih mera, identifikacije i sledljivosti.<br />Predloženi model integralnog procesa zavarivanja je prototipski &scaron;to mu daje originalnost jer je jedinstven. Prototipski pristup omogućuje da se informacioni sistem prilagodi svakom pojedinačnom proizvodnom sistemu, odnosno kompaniji u skladu sa njenim potrebama i zahtevima.</p> / <p>The doctoral dissertation discusses the modeling of welding processes and data modeling, which allows electronic forms of documented procedures, records, specifications, quality plans and work instructions.<br />The model of integrated welding process was developed to identify all the factors that affect the quality of the weld, i.e. the product from the stage of the review required under the contract and technical review, subcontracting, equipment, personnel, processes, welding, handling and storage of basic supplies and materials, testing, control, verification, calibration, non-conformities, corrective actions, identification and traceability.<br />The proposed model of integrated welding process is a prototype which gives originality because it is unique and allows the information system adjusts each production system, and the company in accordance with its needs and requirements</p>
7

Проектирование системы информирования клиентов : магистерская диссертация / Design of a system for informing customers

Кашин, А. А., Kashin, A. A. January 2023 (has links)
Целью работы является моделирование существующего процесса информирования клиентов, оптимизация этого процесса, сравнительный анализ существующих систем информирования, проектирование архитектуры собственной системы. В ходе выполнения работы был проведен сравнительный анализ брокеров сообщений, выявлены достоинства и недостатки каждого из них. Для подключения к существующей корпоративной платформе был разработан план внедрения и выполнена миграция данных в целевую систему с помощью разработанной программы-синхронизатора. / The purpose of the work is to simulate the existing process of informing customers, to conduct a comparative analysis of existing informing systems, and to design the architecture of the same type system. In the course of the work, a comparative analysis of message broker programs was carried out and the advantages and disadvantages of each were identified. In order to connect to the existing corporate platform, an implementation plan was developed and data migration to the target system was performed with the help of the developed synchronization program.
8

Metodologia para modelagem do sistema agroindustrial visando identificar parâmetros de rastreabilidade e qualidade - aplicação na malacocultura continental. / A methodology for Agri-industrial system modeling in order to identify traceability and quality parameters - a continental malacoculture application.

Cunha, Gilberto José da 07 October 2008 (has links)
O trabalho apresenta como inovação, inclusive em nível internacional, a utilização de métodos e técnicas de engenharia de software e de sistemas aplicadas aos Sistemas Agroindustriais (SAG), definindo uma metodologia objetivando facilitar maior compreensão dos relacionamentos e atividades dos diversos agentes componentes de um SAG; modelar graficamente as atividades dos agentes e demais envolvidos em cada etapa de uma cadeia produtiva, através de IDEF0, BPMN e Casos de Uso; identificar informações para qualidade, rastreabilidade do produto e seus insumos ao longo da cadeia produtiva. Efetua, também com caráter inovador, a aplicação dessa metodologia na área de produtos exóticos através da modelagem de atividades pertencentes ao SAG da Malacocultura Continental (criação comercial de escargots), agronegócio inserido na política de incentivo à Agroindústria Familiar. As exigências dos consumidores de produtos agropecuários em relação a qualidade, segurança e rastreabilidade tem crescido ano após ano devido ao medo de problemas com saúde, como o mal da vaca louca. A modelagem do Sistema Agroindustrial (SAG) possibilita identificar necessidades de informação e automação em uma cadeia produtiva, explorar essas possibilidades de modo a permitir a especificação de sistemas de informação que suportem os negócios dos diversos agentes ao longo da cadeia produtiva satisfazendo os requisitos de qualidade e rastreabilidade dos consumidores. A aplicação de um modelo de caso de uso também é apresentada, descrevendo as atividades componentes de processos ao longo da cadeia produtiva, permitindo a identificação de requisitos e informações de rastreabilidade e qualidade. A técnica de casos de uso aplicada na cadeia produtiva ajuda na especificação de sistemas de informação de melhor qualidade e mais aderentes aos processos de negócio envolvidos. Como exemplo é a apresentada a modelagem (utilizando IDEF0, BPMN e casos de uso) de alguns processos de negócio e informação pertencentes à cadeia produtiva da malacocultura continental. A aqüicultura mundial tem se destacado pelo crescimento e sucessivo aumento de produtividade, conferindo, a este tipo de produção, posição de destaque dentro do setor pecuário internacional. Entre as várias modalidades de aqüicultura, nas duas últimas décadas, a criação de escargots (malacocultura) tem merecido atenção de empresários, órgãos de fomento governamentais e pesquisadores. Em águas continentais, a malacocultura continental especialmente a ampularicultura pode ser reconhecida como forma para produção de moluscos com baixo impacto ambiental, sob sistema de produção compatível com pequenas propriedades, o que contribui na maior oferta de alimento para as famílias rurais, aumento na disponibilidade de alimentos de alto valor nutricional e na renda familiar. / It is proposed the application of some Systems and Software Engeneering techniques to the modeling of agro-industrial systems, in an innovative way, defining a methodology in order to better understand the activities and relationships among the many agents within an specific supply chain. It also permits the productive chain graphical modeling using IDEF0, BPMN and Use Cases. The main goal is to identify information for product traceability and quality through the productive chain. There is also presented, another innovation, the application of this methodology to the Continental Malacoculture Agro-industrial System. Customers\' requirements for agro food products quality, safety and traceability have been rising year after year due to the fear of health problems, such as the mad cow disease. The Productive Chain Modeling helps identifying the information and automation needs of a production chain, exploring its possibilities in order to specify information systems that support the business of the many agents throughout the agro food chain and fulfills customers\' quality and traceability requirements. The application of Use Case Model is also presented for requirements and traceability identification and gathering throughout the productive chain. The Use Case technique applied to the productive chain helps to specify more quality and adherent information systems. As an example of those methods, some business and information processes modeling applied to the Continental Malacoculture Productive Chain are presented, using the IDEF0, BPMN and use case techniques. Worldwide aquaculture has increased in importance due to growth and successive increase in productivity, conferring this type of production an outstanding position in the international animal production sector. Amongst different modalities of aquaculture, in the last two decades, the production of escargots (malacoculture) has deserved attention from businessmen, government and researchers. In continental waters, Continental Malacoculture, especially ampullariculture can be seen as a way of producing low impact mollusks, using a system compatible with small farms production, contributing to a greater increase in the availability of high nutritional value food and also improving rural families\' income.
9

Metodologia para modelagem do sistema agroindustrial visando identificar parâmetros de rastreabilidade e qualidade - aplicação na malacocultura continental. / A methodology for Agri-industrial system modeling in order to identify traceability and quality parameters - a continental malacoculture application.

Gilberto José da Cunha 07 October 2008 (has links)
O trabalho apresenta como inovação, inclusive em nível internacional, a utilização de métodos e técnicas de engenharia de software e de sistemas aplicadas aos Sistemas Agroindustriais (SAG), definindo uma metodologia objetivando facilitar maior compreensão dos relacionamentos e atividades dos diversos agentes componentes de um SAG; modelar graficamente as atividades dos agentes e demais envolvidos em cada etapa de uma cadeia produtiva, através de IDEF0, BPMN e Casos de Uso; identificar informações para qualidade, rastreabilidade do produto e seus insumos ao longo da cadeia produtiva. Efetua, também com caráter inovador, a aplicação dessa metodologia na área de produtos exóticos através da modelagem de atividades pertencentes ao SAG da Malacocultura Continental (criação comercial de escargots), agronegócio inserido na política de incentivo à Agroindústria Familiar. As exigências dos consumidores de produtos agropecuários em relação a qualidade, segurança e rastreabilidade tem crescido ano após ano devido ao medo de problemas com saúde, como o mal da vaca louca. A modelagem do Sistema Agroindustrial (SAG) possibilita identificar necessidades de informação e automação em uma cadeia produtiva, explorar essas possibilidades de modo a permitir a especificação de sistemas de informação que suportem os negócios dos diversos agentes ao longo da cadeia produtiva satisfazendo os requisitos de qualidade e rastreabilidade dos consumidores. A aplicação de um modelo de caso de uso também é apresentada, descrevendo as atividades componentes de processos ao longo da cadeia produtiva, permitindo a identificação de requisitos e informações de rastreabilidade e qualidade. A técnica de casos de uso aplicada na cadeia produtiva ajuda na especificação de sistemas de informação de melhor qualidade e mais aderentes aos processos de negócio envolvidos. Como exemplo é a apresentada a modelagem (utilizando IDEF0, BPMN e casos de uso) de alguns processos de negócio e informação pertencentes à cadeia produtiva da malacocultura continental. A aqüicultura mundial tem se destacado pelo crescimento e sucessivo aumento de produtividade, conferindo, a este tipo de produção, posição de destaque dentro do setor pecuário internacional. Entre as várias modalidades de aqüicultura, nas duas últimas décadas, a criação de escargots (malacocultura) tem merecido atenção de empresários, órgãos de fomento governamentais e pesquisadores. Em águas continentais, a malacocultura continental especialmente a ampularicultura pode ser reconhecida como forma para produção de moluscos com baixo impacto ambiental, sob sistema de produção compatível com pequenas propriedades, o que contribui na maior oferta de alimento para as famílias rurais, aumento na disponibilidade de alimentos de alto valor nutricional e na renda familiar. / It is proposed the application of some Systems and Software Engeneering techniques to the modeling of agro-industrial systems, in an innovative way, defining a methodology in order to better understand the activities and relationships among the many agents within an specific supply chain. It also permits the productive chain graphical modeling using IDEF0, BPMN and Use Cases. The main goal is to identify information for product traceability and quality through the productive chain. There is also presented, another innovation, the application of this methodology to the Continental Malacoculture Agro-industrial System. Customers\' requirements for agro food products quality, safety and traceability have been rising year after year due to the fear of health problems, such as the mad cow disease. The Productive Chain Modeling helps identifying the information and automation needs of a production chain, exploring its possibilities in order to specify information systems that support the business of the many agents throughout the agro food chain and fulfills customers\' quality and traceability requirements. The application of Use Case Model is also presented for requirements and traceability identification and gathering throughout the productive chain. The Use Case technique applied to the productive chain helps to specify more quality and adherent information systems. As an example of those methods, some business and information processes modeling applied to the Continental Malacoculture Productive Chain are presented, using the IDEF0, BPMN and use case techniques. Worldwide aquaculture has increased in importance due to growth and successive increase in productivity, conferring this type of production an outstanding position in the international animal production sector. Amongst different modalities of aquaculture, in the last two decades, the production of escargots (malacoculture) has deserved attention from businessmen, government and researchers. In continental waters, Continental Malacoculture, especially ampullariculture can be seen as a way of producing low impact mollusks, using a system compatible with small farms production, contributing to a greater increase in the availability of high nutritional value food and also improving rural families\' income.
10

Modélisation et analyse de l'organisation et du fonctionnement des structures d'hospitalisation à domicile

Chahed - Jebalia, Salma 15 January 2008 (has links) (PDF)
En réponse aux contraintes économiques mais aussi aux évolutions démographique et technologique, le secteur de la santé a commencé à évoluer entraînant dans sa dynamique l'ensemble des établissements de santé les incitant à innover et à se réorganiser. <br />Dans ce travail de recherche, l'intérêt est porté sur les établissements d'hospitalisation à domicile (HAD) en raison du paradoxe qui les caractérisent : bien que créés il y a une cinquantaine d'années, ces établissements se sont révélées, durant cette dernière décennie, comme moyen possible de réduction des dépenses du domaine de la santé tout en satisfaisant une bonne qualité de service. En outre, à la différence des établissements hospitaliers, les problématiques existantes dans les établissements d'HAD n'aiguisent pas suffisamment la curiosité de la communauté du génie industriel en général et celle de la recherche opérationnelle en particulier.<br />Dans cette thèse, nous nous intéressons à trois problématiques distinctes issues du domaine d'HAD. La première concerne l'activité principale des professionnels de santé à savoir la gestion des projets thérapeutiques des patients. Une extension du projet thérapeutique est présentée permettant d'intégrer l'aspect organisationnel des prestations de soins fournissant ainsi un outil d'aide à la coordination des acteurs impliqués dans la prise en charge des patients. A partir de cette étape, il nous a été possible d'avoir une vision multi-projets, et de modéliser de la sorte l'ensemble des fonctions de type gestion des opérations propres à un établissement d'HAD. Cette modélisation émane en partie d'une étude comparative entre quatre établissements d'HAD. En se basant sur les principales fonctions identifiées, une cartographie des décisions est dressée adoptant différents niveaux d'horizons temporels. Cette visibilité sur le système décisionnel nous a éclairé quant aux problématiques critiques intéressant les établissements d'HAD. La dernière problématique porte sur la production et la distribution des médicaments anticancéreux dans le cadre d'une chimiothérapie à domicile. Le problème s'apparente à un problème du voyageur de commerce couplé à un problème d'ordonnancement.

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