Procurement’s role in engineering and construction is changing. Procurement is evolving into a far more strategic discipline. Major equipment procurement in particular ties up a large proportion of construction cost, has long lead time, and is usually associated with the acquisition of complex or specialized technology. Selection of suppliers is a complex process which requires the evaluation of several suppliers and project targets. This analysis is usually performed manually, it is time consuming, and certain tradeoffs may be overlooked. This research advances state of the art to aid the commercial evaluation and selection of engineered equipment suppliers in the early stages of capital projects. A decision support system was developed in cooperation with several leading engineering-procurement-construction (EPC) and owner firms within industrial construction. The system integrates firms’ market and supplier performance data with a decision aid method to support rapid tradeoff analysis and evaluation of sourcing alternatives in the early stages of capital projects. The tool has been developed in Visual C#, in the form of simple and intuitive forms, with Microsoft Access as the back-end database. A supplier selection module uses the Aspiration Interactive Method (AIM) for providing rapid tradeoff analysis and points how each supplier is ranked in relation to the expected procurement targets. The system also includes a module for schedule analysis of the preferred supplier. Managers first need to assess unique project and supplier’s characteristics to estimate most likely durations. These durations are used to run a PERT analysis and provide initial feedback on probability of equipment delivery success. Therefore, managers are able to check whether their procurement master schedule milestones are feasible or not. Two actual selection cases were used to validate system’s usefulness, completeness, and deployability. According to experienced managers, this tool brings intelligence to the traditional selection process. The ability to quickly generate what-if scenarios and rapidly perform tradeoff analysis based on real data improves the quality of decision making, and supports commercial assessment and recommendation of suppliers in the early phases of capital projects. / text

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This thesis presents a further study on Dai and Zhang’s (2008) supply networks, which are Cost Saver, Adapter, and Multiple Driven. This concept is centred on hub or focal firm which is the core of the supply networks, built on Miles and Snow’s (2003) strategic typology. In Cost Saver supply network, the hub firm is ‘Defender’; for Adapter supply network it is ‘Prospector’, while in Multiple Driven supply network it is ‘Analyser’. This study explores the interrelationship between the hub and supplier’s configuration and its effect on organisational performance. A comprehensive literature review is carried out with reference to supply chain (SC), supply network (SN) and supply network management (SNM). It stretches to describing Dai and Zhang’s (2008) novel supply networks, its association with Miles and Snow’s theory, the supply network configuration concept, and further expatiates on the need for appropriate supplier configuration for improved performances within the supply networks. The key performance indicators (KPI) adopted for this work, the variables considered in the simulation modelling were evaluated. Usable data were collected from a sample of 630 suppliers, and 15 hub firms. This is accompanied by Hypotheses testing, Case study and Simulation experiments to fulfil the aims and objectives of this research. From the findings of this study, it is confirmed that organisations can be grouped as either the Defender, Prospector, Analyser or Reactor type according to the Miles and Snow typology. The investigation identified that for Multiple Driven, Adapter and Cost Saver supply networks, performances are most improved with an increase in the existence of suppliers of the same typology with the hub organisation within the supply network.

The thesis focuses on risk assessment of selection of chosen company suppliers. It evaluates the quality of suppliers using principles of fuzzy logic and the determining rules. The evaluation of suppliers is conducted using programs MS Office Excel and MATLAB. The thesis contains a comparison of results of these two programs.

This thesis examined the impact of the U.S-China trade war on the global, U.S, and China?s agricultural exports while considering the competing suppliers? effect using a highly disaggregated HS 6-digit trade flow data in the structural gravity model. The empirical results indicate that the trade war caused about 8.6% and 17% reduction in U.S and China?s agricultural exports, respectively. However, global agricultural export was not negatively impacted during the trade war. Finally, the results also showed that tariff increases by U.S caused an increased in U.S competing suppliers? exports to China. Similarly, China?s retaliatory tariffs caused an increase in China?s competing suppliers? exports to the U.S.

Submitted by Bruna Rodrigues (bruna92rodrigues@yahoo.com.br) on 2017-10-02T12:13:16Z No. of bitstreams: 1 DissLRR.pdf: 4462451 bytes, checksum: cd5651c604894410c0918ddc5d0b7551 (MD5) / Approved for entry into archive by Ronildo Prado (bco.producao.intelectual@gmail.com) on 2018-02-05T17:09:32Z (GMT) No. of bitstreams: 1 DissLRR.pdf: 4462451 bytes, checksum: cd5651c604894410c0918ddc5d0b7551 (MD5) / Approved for entry into archive by Ronildo Prado (bco.producao.intelectual@gmail.com) on 2018-02-05T17:09:45Z (GMT) No. of bitstreams: 1 DissLRR.pdf: 4462451 bytes, checksum: cd5651c604894410c0918ddc5d0b7551 (MD5) / Made available in DSpace on 2018-02-05T17:17:58Z (GMT). No. of bitstreams: 1 DissLRR.pdf: 4462451 bytes, checksum: cd5651c604894410c0918ddc5d0b7551 (MD5) Previous issue date: 2017-05-18 / Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES) / The issue of sustainability, which is an increasingly important consideration in the day-to-day operations of businesses, needs to be addressed in the context of supplier selection. The use of multi-criteria approaches in decisions concerning the selection of sustainable suppliers can be a valuable approach for helping to resolve the complexity of this process. A systematic review of the literature highlighted gaps in the research in this area, such as the lack of a detailed description of multi-criteria methods, as well as a scarcity of sustainability criteria that take into account the three main perspectives (Economic, Environmental, and Social). This work describes the development and real case application of a DEMATEL (Decision-Making Trial and Evaluation Laboratory) and ANP (Analytic Network Process) fuzzy modeling technique for the selection of sustainable suppliers. The methodological approach used in the research was quantitative, descriptive, and empirical. The modeling and simulations were performed using MATLAB®. Incorporation of the specificities of the process of selection of sustainable suppliers makes the model a useful tool for use by both businesses and researchers concerned with the issue of sustainability. A systematic review of the published research highlights the main state-of-art methods and criteria used for the selection of green and sustainable suppliers. The model is described in a framework highlighting each step of the application. It was subsequently applied by a major glass packaging company, where the supply chain coordinator agreed to assist in the research. The outputs of the second phase of the model showed that the Economic cluster was most important and interacted with the Environmental cluster, while the Social cluster remained practically inert, without interactions with the other clusters. For the three perspectives, the three most influential criteria were as follows: cost, compliance, and quality (Economic perspective); environmental certifications/ISO 14001, reuse/recovery, and pollution control (Environmental perspective); and stakeholder rights, respect for policies, and encouragement of the development of self-sustainable recycling programs (Social perspective). Finally, a supplier was selected using the framework presented, and the criteria that most influenced the decision were highlighted. The procedure developed here offers a tool to assist businesses searching for sustainable solutions, as well as researchers in the scientific community concerned with the development of knowledge in this area. / A temática sustentável, cada vez mais presente e atuante no cotidiano das operações das empresas precisa ser tratada no contexto da seleção de fornecedores. Aplicar abordagens de decisão multicritério para a seleção de fornecedores sustentáveis demonstra ser uma alternativa interessante a fim de lidar com a natureza complexa deste processo. Por meio de uma revisão sistemática da literatura foi possível destacar algumas lacunas de pesquisa, como a falta de uma visão detalhada dos métodos multicritérios e uma escassa abordagem de critérios sustentáveis, abordando as três perspectivas (Econômica, Ambiental e Social). Desta forma, o objetivo central da pesquisa é detalhar e aplicar em um caso real a modelagem fuzzy DEMATEL (Decision-making Trial and Evaluation Laboratory) e fuzzy ANP (Analytic Network Process) para a seleção de fornecedores sustentáveis. A abordagem metodológica empregada na pesquisa é quantitativa descritiva empírica, com aplicação de modelagem e simulação em MATLAB ®. Espera-se que o modelo possa internalizar as especificidades do processo de seleção de fornecedores sustentáveis de modo a tornar-se uma ferramenta útil às empresas e aos pesquisadores que estudam o método. A revisão sistemática da pesquisa pode destacar os principais métodos na literatura e os principais critérios utilizados pela seleção de fornecedores verdes e sustentáveis no estado da arte. O modelo foi detalhado em um framework, destacando-se cada passo da aplicação. Posteriormente foi aplicado em uma empresa de grande porte de embalagens vítreas, onde a coordenadora de Supply Chain se dispôs a auxiliar na pesquisa. Como saídas da segunda fase do modelo, o cluster Econômico revelou ser o mais importante e exerce influência sob o cluster Ambiental, já o cluster Social permanece praticamente inerte sem exercer ou receber influência. Também pode-se destacar que os três critérios mais influentes de cada perspectiva foram: ‘Custo’, ‘Compliance’ e ‘Qualidade’ na perspectiva Econômica; ‘Certificações Ambientais / ISO 14001’, Reuso / Recuperação e ‘Controle da Poluição’ na perspectiva Ambiental; e ‘Direitos dos Stakeholders’, ‘Respeito pelas políticas’ e ‘Incentivo ao desenvolvimento de programas de reciclagem auto-sustentáveis’ na perspectiva Social. Ao final, um fornecedor é escolhido com o framework apresentado, e os critérios mais influentes na decisão foram destacados. Esta discussão é válida para auxiliar empresas em busca de soluções sustentáveis e pesquisadores na área que desenvolvem o conhecimento para a comunidade científica.

Este trabalho estabelece um procedimento metodológico para padronizar a inspeção de recebimento, eliminar conflitos com os fornecedores e desencontros de informações, causados por processos e equipamentos incompatíveis com as especificações, propondo a inclusão de roteiros de inspeção no processo licitatório para auxiliar as especificações na contratação de serviços de fornecimento de peças usinadas para uso em veículos espaciais de sondagem e lançadores de satélites. Esta proposta tem por base a pesquisa e análise das necessidades do Instituto de Aeronáutica e Espaço (IAE), sobre as formas de inspeção de recebimento dos serviços de usinagem fornecidos por empresas do setor aeroespacial e revisão bibliográfica sobre o assunto. Espera-se obter como resultado, a eliminação de conflitos no recebimento de peças, a confiança na inspeção dos fornecedores e o recebimento de produtos com a qualidade necessária ao cumprimento dos requisitos especificados. / This work establishes a methodological procedure to standardize the reception inspection, to eliminate conflicts with the suppliers, and divergence of information, caused by processes and incompatible equipments with the specifications, proposing the inclusion of inspection itineraries in the acquisition process to aid the specifications in the recruiting of services of supply of manufactured pieces for use in space vehicles of survey and throwers of satellites. This proposal has for base the research and analysis of the needs of the Institute of Aeronautics and Space (IAE), on the forms to inspection of reception services of manufacture supplied by companies of the aerospace section and bibliographical revision on the subject. It is waited to obtain as result, the elimination of conflicts in the reception of pieces, the trust in the inspection of the suppliers and the reception of products with the necessary quality to the execution of the specified requirements.

This diploma thesis deals with the system of monitoring and evaluation of suppliers at the company RayService, a.s.. The aim is the implementation of an integrated procedural approach within the office work with suppliers. Assortment and quantity of suppliers is now so wide that the existing non-systemic solutions prevent more effective manufacturing and overall development of the company. Everything must be consistent with possible sources of the company, for example IS Helios. The basic condition is availability of data and by this also easy work with them. The main measurement of suppliers at the company RayService is the OTD (on time delivery) of suppliers, which value is 93% today. This work should set up a system of monitoring and evaluation of suppliers at the company so that the growing trend of OTD (from the current 63% to target 93%) can start.

In the Master’s thesis I am deal with the proposal of sophisticated method for suppliers rating. The thesis analyses the supply environment of business company and characterizes the problems related to suppliers rating and choosing. The object of my Master’s thesis is the elaboration of the models for suppliers rating on the basis of fuzzy logic. These models should successfully solve the questions of suppliers rating as suitable method for minimizing of risk of suppliers.