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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.
41

Developing a conceptual framework to analyse supply chain design practices

Nel, Jacobus Daniel 11 1900 (has links)
Analysis of the supply chain is necessary to improve performance. For this reason, supply chain management (SCM) has received a lot of attention recently and supply chain design (SCD) is a concept that forms an integral part of the adoption and implementation of SCM. Effective SCD contributes towards better supply chain integration (SCI) which, in turn, contributes towards improved supply chain performance. The focus of this study is on the analysis of SCD practices. Designing the supply chain structure is a complex and demanding undertaking that needs to be aligned with the needs of the supply chain’s end customers, because their needs ultimately have to be satisfied. This study proposes a conceptual framework that has been developed from literature to assist organisations in the analysis of their SCD practices, with the aim of improving supply chain performance. The conceptual framework was exploratively tested by means of empirical research to determine whether it can be used as an assessment tool to assess the SCD practices of organisations. The study concluded that the conceptual framework that was developed in this study can be used as an assessment tool with which organisations can analyse their SCD practices. / Business Management / D. Com. (Business Management)
42

Development of Multiple Linear Regression Model and Rule Based Decision Support System to Improve Supply Chain Management of Road Construction Projects in Disaster Regions

Anwar, Waqas January 2019 (has links)
Supply chain operations of construction industry including road projects in disaster regions results in exceeding project budget and timelines. In road construction projects, supply chain with poor performance can affect efficiency and completion time of the project. This is also the case of the road projects in disaster areas. Disaster areas consider both natural and man-made disasters. Few examples of disaster zones are; Pakistan, Afghanistan, Iraq, Sri Lanka, India, Japan, Haiti and many other countries with similar environments. The key factors affecting project performance and execution are insecurity, uncertainties in demand and supply, poor communication and technology, poor infrastructure, lack of political and government will, unmotivated organizational staff, restricted accessibility to construction materials, legal hitches, multiple challenges of hiring labour force and exponential construction rates due to high risk environment along with multiple other factors. The managers at all tiers are facing challenges of overrunning time and budget of supply chain operations during planning as well as execution phase of development projects. The aim of research is to develop a Multiple Linear Regression Model (MLRM) and a Rule Based Decision Support System by incorporating various factors affecting supply chain management of road projects in disaster areas in the order of importance. This knowledge base (KB) (importance / coefficient of each factor) will assist infrastructure managers (road projects) and practitioners in disaster regions in decision making to minimize the effect of each factor which will further help them in project improvement. Conduct of Literature Review in the fields of disaster areas, supply chain operational environments of road project, statistical techniques, Artificial Intelligence (AI) and types of research approaches has provided deep insights to the researchers. An initial questionnaire was developed and distributed amongst participants as pilot project and consequently results were analysed. The results’ analysis enabled the researcher to extract key variables impacting supply chain performance of road project. The results of questionnaire analysis will facilitate development of Multiple Linear Regression Model, which will eventually be verified and validated with real data from actual environments. The development of Multiple Linear Regression Model and Rule Based Decision Support System incorporating all factors which affect supply chain performance of road projects in disastrous regions is the most vital contribution to the research. The significance and novelty of this research is the methodology developed that is the integration of those different methods which will be employed to measure the SCM performance of road projects in disaster areas.
43

Innovations in South African Public Service Procurement Policy : 1999-2005

Van der Walt, Elizabeth Magdalena 09 May 2013 (has links)
This dissertation has shown that public procurement regulation takes place through regulatory documents that mainly underwent a name change and that the only changes are found in the reporting framework. The South African government identified public procurement as an active instrument to achieve social and economic goals. To provide substance to this realisation, public procurement was taken up in the Constitution of the Republic of South Africa 1996. The constitution prescribes a procurement system that is fair, equitable, transparent, competitive and cost-effective. / Public Administration & Management / M. Admin. (Public Administration)
44

考量供應鏈整體上下游廠商之供應商評選模式 / A supplier evaluation model for considering upstream and downstream companies of the supplier in supply chain

林崑裕, Lin, Kun Yu Unknown Date (has links)
關於供應商評選模式的探討與研究,是現今於供應鏈管理中非常重要的議題,而對於國內外供應商評選的相關性研究中,往往只考量供應商本身績效,而缺乏整體性的考量,有鑑於此,當企業在評選供應商時,不僅是針對單一供應商績效的考量,而對於供應商本身上下游廠商的整體績效的考量,也是相當重要的評選因素。本研究運用資料包絡分析法(Data Envelopment Analysis, DEA)與簡易多屬性評等技術(Simple Multi-Attribute Rating, SMART),以建構較完整的供應商評選模式,協助企業的決策者選擇最適的供應商。 在進行供應商與供應商所屬的供應鏈之績效評估時,利用資料包絡分析法中的交叉模式計算供應商與供應商所屬的供應鏈之平均效率,再藉由平均效率值以排序供應商與供應商所屬的供應鏈之優先順位,但因兩者之順序會產生不一致的情形,利用SMART法中的排序加總法計算兩者之權重值,最後以加總法計算綜合效率值,依據綜合效率值加以排序以評選最適的供應商,而此兩種方法的結合, 則需透過驗證的方式以確定運用之正確性,利用系統動力學(System Dynamics, SD)以建構供應鏈之整體廠商的經營環境,模擬供應鏈整體廠商之績效評估模式,以產生模擬驗證排序,最後再將綜合排序與驗證排序,利用Spearman等級相關係數驗證其相關性,而最終證明兩排序具有高度相關性,也證實本研究所提出的供應商評選模式富有參考價值。 / The research of supplier selection model is a very important issue in supply chain management (SCM). Even though the research on supplier selection is abundant, the most works usually only consider the performance of the supplier. This situation can result in a lack of integral deliberation. Therefore, the decision-maker wants to select his vendor in the company, it is important that the decision-maker not only focus on the business unit but also add to the overall organization of the supply chain. In this paper the Data Envelopment Analysis (DEA) and the Simple Multi-Attribute Rating (SMART) are developed to construct the effective supplier evaluation model depends upon the constituent parts of the supply chain, which may be helpful for selecting the appropriate vendor. When evaluating the performance of the supplier and the supplier’s supply chain, the cross-efficiency model of DEA is applied to compute average efficiency both the supplier and the supply chain. According to average efficiency, we can arrange the priority order that may be have the inconsistent order for the suppliers and their supply chains. The rank sum weighting of SMART is employed to determine the weights of suppliers and their chains and then the weighted method is used to calculate overall efficiency that ranking of the suppliers is obtained. Above of two methods, we must be verify the model. The System Dynamics (SD) is designed to implement the whole components of the supply chain for business environment and simulate the performance model. Based on this performance model, we can acquire a confirmation list. In the end, the Spearman’s rank correlation coefficient is provided to testify the correlation between the overall order and the confirmation list. The result of the statistic analysis is illustrated the strength of the association. The model can be tailored and applied by firms that are making decisions on supplier selection.
45

Innovations in South African Public Service Procurement Policy : 1999-2005

Van der Walt, Elizabeth Magdalena 09 May 2013 (has links)
This dissertation has shown that public procurement regulation takes place through regulatory documents that mainly underwent a name change and that the only changes are found in the reporting framework. The South African government identified public procurement as an active instrument to achieve social and economic goals. To provide substance to this realisation, public procurement was taken up in the Constitution of the Republic of South Africa 1996. The constitution prescribes a procurement system that is fair, equitable, transparent, competitive and cost-effective. / Public Administration and Management / M. Admin. (Public Administration)
46

Diseño de un modelo para mejorar la competitividad de la cadena de suministro del sector florícola ecuatoriano

Rodríguez Mañay, Luis Oswaldo 19 June 2023 (has links)
[ES] Las exportaciones de Ecuador han estado caracterizadas por productos primarios (Petróleo crudo, banano y plátano, café, camarón, cacao, abacá, madera, atún, pescado, flores naturales) y por productos industrializados (derivados de petróleo, café elaborado, elaborados de cacao, harina de pescado, otros elaborados del producto del mar, químicos y fármacos, manufacturas de metales, sombreros, manufacturas de textiles). Las exportaciones de Ecuador en el período 2017-2021 han estado sobre los 20 mil millones de dólares, de los cuales el 80% corresponde a productos primarios y el 20% a productos industrializados. Dentro de los productos primarios la participación del petróleo crudo ha ido disminuyendo al pasar del 42% en el 2017 a 34% en el 2021, en cambio el resto de productos primarios ha pasado del 58% en el 2017 al 66% en el 2021. Estas cifras significan que la especialización de Ecuador es netamente agrícola. En este contexto la presente investigación titulada "Diseño de un modelo para mejorar la competitividad del sector florícola ecuatoriano" apunta a contribuir el sector agrícola ecuatoriano. Para el efecto el estudio contempló las siguientes investigaciones: a) Competitividad del sector florícola ecuatoriano, para lo cual se aplicó la metodología de Balassa, que determinó que Ecuador y Colombia tienen una fuerte ventaja comparativa en comparación con los países exportadores estudiados como son: Países Bajos, Kenia y Etiopía. Se concluye que Ecuador debe aplicar estrategias de marketing, como es el desarrollo del mercado, para lograr el posicionamiento de su exportación en la Unión Europea que en la actualidad es el principal mercado de flores cortadas del mundo. Otra estrategia que debe aplicar Ecuador es la diversificación relacionada que especifica que se debe aplicar la producción de flores cortadas hacia otras variedades como son crisantemos, claveles, flores y capullos, lirios y orquídeas, que actualmente forman parte del mercado mundial. b) Análisis comparativo de los modelos de la cadena de suministro: ABC, BSC y SCOR, se aplicó una revisión de la literatura, se encontró que el modelo SCOR es una herramienta muy poderosa para estructura, evaluar y comparar las prácticas y el desempeño de la cadena de suministro. El modelo SCOR propone un enfoque integrado que se basa en la concepción de una estructura interconectada que une procesos, incluye métricas de desempeño, mejores prácticas y tecnología con el objeto de la mejora continua de la cadena de suministro. c) Análisis de desempeño de la cadena de suministro del sector florícola ecuatoriano, por métricas, aplicando SCOR y AHP. Para este estudio se aplicó la metodología SCOR y AHP y dio como resultado que los procesos Devolución y Gestión registran las puntuaciones más bajas, y por lo tanto los agentes del sector florícola deberían trabajar más sobre estos procesos para su mejora. Del estudio realizado a la cadena de suministro del sector florícola ecuatoriano se concluye que el modelo SCOR junto con AHP constituyen una adecuada metodología para el análisis de la cadena de suministro del sector florícola, y particularmente del sector florícola ecuatoriano. Los resultados de este estudio muestran las posibilidades tan interesantes que se abren con la aplicación conjunta, para identificar los aspectos más críticos en la SC de un sector con el objeto de introducir mejoras. d) Análisis del desempeño de la cadena de suministro del sector florícola ecuatoriano, por procesos, subprocesos, actividades y tareas, aplicando SCOR y AHP. Se aplicó la metodología SCOR y AHP. Se determinó que de las 29 empresas estudiadas el desempeño tuvo como resultado el 85% de rendimiento calificándose como "bueno". La investigación contribuye a la literatura científica con una propuesta metodológica que utiliza el modelo SCOR con AHP para medir el rendimiento de la cadena de suministro. El modelo propuesto permite analizar el desempeño de la cadena de suministro a nivel sectorial. / [CA] Les exportacions de l'Equador han estat caracteritzades per productes primaris (Petroli cru, bananer i plàtan, café, gambeta, cacau, *abacá, fusta, tonyina, peix, flors naturals) i per productes industrialitzats (derivats de petroli, café elaborat, elaborats de cacau, farina de peix, altres elaborats del producte de la mar, químics i fàrmacs, manufactures de metalls, barrets, manufactures de tèxtils). Les exportacions de l'Equador en el període 2017-2021 han estat sobre els 20 mil milions de dòlars, dels quals el 80% correspon a productes primaris i el 20% a productes industrialitzats. Dins dels productes primaris la participació del petroli cru ha anat disminuint en passar del 42% en el 2017 a 34% en el 2021, en canvi la resta de productes primaris ha passat del 58% en el 2017 al 66% en el 2021. Aquestes xifres signifiquen que l'especialització de l'Equador és netament agrícola. En aquest context la present investigació titulada "Disseny d'un model per a millorar la competitivitat del sector *florícola equatorià" apunta a contribuir el sector agrícola equatorià. Per a l'efecte l'estudi va contemplar les següents investigacions: a) Competitivitat del sector *florícola equatorià, per a això es va aplicar la metodologia de *Balassa, que va determinar que l'Equador i Colòmbia tenen un fort avantatge comparatiu en comparació amb els països exportadors estudiats com són: Països Baixos, Kenya i Etiòpia. Es conclou que l'Equador ha d'aplicar estratègies de màrqueting, com és el desenvolupament del mercat, per a aconseguir el posicionament de la seua exportació a la Unió Europea que en l'actualitat és el principal mercat de flors tallades del món. Una altra estratègia que ha d'aplicar l'Equador és la diversificació relacionada que especifica que s'ha d'aplicar la producció de flors tallades cap a altres varietats com són crisantems, clavells, flors i capolls, lliris i orquídies, que actualment formen part del mercat mundial. b) Anàlisi comparativa dels models de la cadena de subministrament: ABC, *BSC i *SCOR, es va aplicar una revisió de la literatura, es va trobar que el model *SCOR és una eina molt poderosa per a estructura, avaluar i comparar les pràctiques i l'acompliment de la cadena de subministrament. El model *SCOR proposa un enfocament integrat que es basa en la concepció d'una estructura interconnectada que uneix processos, inclou mètriques d'acompliment, millors pràctiques i tecnologia amb l'objecte de la millora contínua de la cadena de subministrament. c) Anàlisi d'acompliment de la cadena de subministrament del sector *florícola equatorià, per mètriques, aplicant *SCOR i *AHP. Per a aquest estudi es va aplicar la metodologia *SCOR i *AHP i va donar com a resultat que els processos Devolució i Gestió registren les puntuacions més baixes, i per tant els agents del sector *florícola haurien de treballar més sobre aquests processos per a la seua millora. De l'estudi realitzat a la cadena de subministrament del sector *florícola equatorià es conclou que el model *SCOR juntament amb *AHP constitueixen una adequada metodologia per a l'anàlisi de la cadena de subministrament del sector *florícola, i particularment del sector *florícola equatorià. Els resultats d'aquest estudi mostren les possibilitats tan interessants que s'obrin amb l'aplicació conjunta, per a identificar els aspectes més crítics en la *SC d'un sector a fi d'introduir millores. d) Anàlisi de l'acompliment de la cadena de subministrament del sector *florícola equatorià, per processos, *subprocesos, activitats i tasques, aplicant *SCOR i *AHP. Es va aplicar la metodologia *SCOR i *AHP. Es va determinar que de les 29 empreses estudiades l'acompliment va tindre com a resultat el 85% de rendiment qualificant-se com a "bo". La investigació contribueix a la literatura científica amb una proposta metodològica que utilitza el model *SCOR amb *AHP per a mesurar el rendiment de la cadena de subministrament. El model proposat permet analitzar l'acompliment de la c / [EN] Ecuador's exports have been characterized by primary products (crude oil, bananas and plantains, coffee, shrimp, cocoa, cocoa, abaca, wood, tuna, fish, natural flowers) and industrialized products (petroleum derivatives, processed coffee, processed cocoa, fishmeal, other processed seafood, chemicals and pharmaceuticals, manufactured metals, hats, manufactured textiles). Ecuador's exports in the period 2017-2021 have been over US$20 billion, of which 80% corresponds to primary products and 20% to industrialized products. Within primary products the participation of crude oil has been decreasing going from 42% in 2017 to 34% in 2021, on the other hand the rest of primary products has gone from 58% in 2017 to 66% in 2021. These figures mean that Ecuador's specialization is purely agricultural. In this context, the present research entitled "Design of a model to improve the competitiveness of the Ecuadorian flower sector" aims to contribute to the Ecuadorian agricultural sector. For this purpose, the study contemplated the following research: a) Competitiveness of the Ecuadorian flower sector, for which the Balassa methodology was applied, which determined that Ecuador and Colombia have a strong comparative advantage compared to the exporting countries studied such as: Netherlands, Kenya and Ethiopia. It is concluded that Ecuador should apply marketing strategies, such as market development, to achieve export positioning in the European Union, which is currently the main market for cut flowers in the world. Another strategy that Ecuador should apply is related diversification, which specifies that it should apply the production of cut flowers to other varieties such as chrysanthemums, carnations, flowers and buds, lilies and orchids, which are currently part of the world market. b) Comparative analysis of supply chain models: ABC, BSC and SCOR, a literature review was applied, and it was found that the SCOR model is a very powerful tool for structuring, evaluating and comparing supply chain practices and performance. The SCOR model proposes an integrated approach based on the concept of an interconnected structure that links processes, includes performance metrics, best practices and technology for the purpose of continuous improvement of the supply chain. c) Performance analysis of the supply chain of the Ecuadorian flower sector, by metrics, applying SCOR and AHP. For this study, the SCOR and AHP methodology was applied and resulted in the Return and Management processes registering the lowest scores, and therefore the floriculture sector agents should work more on these processes for their improvement. From the study of the supply chain of the Ecuadorian flower sector, it is concluded that the SCOR model together with AHP is an adequate methodology for the analysis of the supply chain of the flower sector, and particularly of the Ecuadorian flower sector. The results of this study show the interesting possibilities opened up by their joint application to identify the most critical aspects of a sector's SC in order to introduce improvements. d) Analysis of the performance of the Ecuadorian flower supply chain, by processes, sub-processes, activities and tasks, applying SCOR and AHP. The SCOR and AHP methodology was applied. It was determined that of the 29 companies studied, the performance resulted in 85% of performance, qualifying as "good". The research contributes to the scientific literature with a methodological proposal that uses the SCOR model with AHP to measure supply chain performance. The proposed model allows the analysis of supply chain performance at the sector level. / Rodríguez Mañay, LO. (2023). Diseño de un modelo para mejorar la competitividad de la cadena de suministro del sector florícola ecuatoriano [Tesis doctoral]. Universitat Politècnica de València. https://doi.org/10.4995/Thesis/10251/194338

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