914 resultados para Supply Chain Simulation, Incomplete Datasets, Variable Cycle Times


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Este análisis muestra detalladamente la línea de producción de la planta de Volkswagen, ubicada en México en el estado de Puebla. Se describe la capacidad operativa utilizada para satisfacer la demanda de la planta de producción de automóviles más grande de Latinoamérica, siendo clave para mantenerse en el mercado con estándares de calidad altos y contribuir al desarrollo de la economía del país. Asimismo, a nivel regional, esta planta se abastece de proveedores estratégicos ubicados en una zona cercana, ayudando a disminuir costos de transporte de piezas y tiempos de respuesta. Inicialmente se realiza una breve descripción del entorno económico de la empresa a nivel regional y del sector a nivel global para hacer énfasis en lo competitivo que es el mercado de la producción de automóviles. Posteriormente se describe la finalidad que tiene esta misión empresarial soportada por la Universidad del Rosario, donde se afianzan conocimientos importantes sobre un mercado de talla mundial. El siguiente aspecto es un diagnóstico de la empresa, donde se dan a conocer las marcas que hacen parte del grupo Volkswagen y la situación financiera que refleja la marca desde el 2012, revelando los ingresos obtenidos durante el período 2012-2014, gastos operacionales y factores que no se destacan positivamente como un flujo de caja negativo para el 2014. Posteriormente se plasman los conceptos teóricos necesarios para que el lector comprenda las variables inmersas en una planta de producción, destacando la teoría de colas y el diseño del layout de la empresa. Finalmente, se da una descripción detallada del proceso de producción en esta planta, donde se muestra la línea de producción, el ensamble y la importancia de un sistema operativo interno que depende principalmente de una alta inversión de tecnología e ingeniería que permite obtener un mayor beneficio en cada etapa del proceso.

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Objetivo: realizar un diagnóstico respecto a la oferta demanda de hemocomponentes, en el contexto epidemiológico colombiano para que sirva de base en la formulación de futuros modelos logísticos de cadena de suministro que permita responder eficientemente a las necesidades transfusionales del país Método: se realizó un estudio descriptivo retrospectivo basado en las fuentes oficiales de información colombiana respecto a condiciones epidemiológicas poblacionales y su relación respecto a captación y transfusión de sangre, así como las posibilidades de conexiones aéreas. Resultados: actualmente 62.3% de la captación es aportada principalmente por 19% de los bancos de sangre del país (16 / 82), ubicados en 8 ciudades del país las cuales evidencian mejores condiciones de salud e índices de densidad poblacional superiores al promedio nacional. Adicionalmente, desde estas ciudades se puede hacer cubrimiento de hemocomponentes en todo el territorio nacional dadas las condiciones de las conexiones aéreas. Conclusiones: es posible con base en el diagnostico presentado, plantear opciones que apunten a mejorar la eficiencia en la cadena de suministros de hemocomponentes, centralizando la captación de sangre en las áreas donde se cuenta con mejores condiciones de salud y mayores densidades poblacionales. Lo anterior permitiría minimizar los porcentajes de incineración de unidades de glóbulos rojos por vencimiento al mejorar las redes de distribución y de esta manera reducir costos de operación. Debe además fortalecerse la gestión de inventarios desde los servicios de transfusión para lograr minimizar las perdidas. Lo anterior requiere control gubernamental dado que al considerarse la sangre como un bien de interés público, su uso no puede ser indiscriminado.

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El concepto de administración ha venido cambiando constantemente a través del tiempo y de las ideologías de diferentes autores que han marcado dicho concepto, en donde se ha podido establecer de mejor forma el significado que ésta ciencia tiene con la innovación y la estrategia. El objetivo de este trabajo es mostrar los fundamentos teóricos de la administración, la innovación y la estrategia, para así mostrar los alcances e impactos que estos tienen en las organizaciones visitadas durante la misión empresarial al Silicon Valley, principalmente a YouTube y Google. Para cumplir con dicho objetivo se realizaron encuestas a diferentes trabajadores pertenecientes a las organizaciones, obteniendo así, información valiosa para el estudio realizado. Con la información obtenida de la entrevistas, se logró recopilar información pertinente que permitió concluir que la innovación es un pilar fundamental para el buen funcionamiento de las empresas pertenecientes al Silicon Valley y así mismo ser base indispensable para la creación y formulación de las principales estrategias de las empresas.

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El cambio es tan válida, como cuando se aplica al contexto logístico donde sus implicaciones sobre la efectividad de las empresas del cual se deben enfrentarse en un mercado global; hoy, no basta con tener un producto “estrella” y un precio competitivo, sino también prestar el mejor servicio al cliente, gerenciando los recursos involucrados en la cadena de abastecimiento. En el proyecto se expone la formulación viable para la logística en la cadena de abastecimiento en la empresa BIMBO, el cual efectúe la estrategia de “Autoventa”, métodos a partir de la administración de productos de alta rotación y controlar el manejo de información relacionada con el consumo, con el fin de satisfacer las necesidades de los clientes de manera rentable. El objetivo de este proceso es hacer llegar el producto correcto al cliente correcto en el lugar correcto y en el momento correcto. Por consiguiente este trabajo es el resultado del análisis de la cadena de Abastecimiento y el acercamiento a la creación de un plan estratégico de logística.

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La Misión empresarial a México 2015, tiene como propósito brindar a los estudiantes espacios para el crecimiento profesional, mediante la aplicación de los conceptos y los modelos estudiados en las diferentes visitas empresariales que se realizaron. Se pretende conocer cuáles son las nuevas tendencias en el manejo y administración de la cadena de abastecimiento de las empresas, de manera que estos conceptos puedan ser aplicados en diferentes tipos de empresas. Se realizó una investigación de cada una de las empresas que fueron visitadas realizando un análisis de un punto clave en cada una, por ejemplo, se describe la política “Think Blue” empleada por el grupo Volkswagen para el éxito y reconocimiento empresarial en la logística verde, y se analizan los principales procesos de producción de la planta productora del grupo Modelo, entre otras. Por otra parte, se analiza el modelo de gestión logística para pequeñas y medianas empresas, desarrollado en la Universidad Popular Autónoma del Estado de Puebla, el cual puede ser usado como base para el progreso y fortalecimiento de las pymes en nuestro país.

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The challenges of the current global food systems are often framed around feeding the world's growing population while meeting sustainable development for future generations. Globalization has brought to a fragmentation of food spaces, leading to a flexible and mutable supply chain. This poses a major challenge to food and nutrition security, affecting also rural-urban dynamics in territories. Furthermore, the recent crises have highlighted the vulnerability to shocks and disruptions of the food systems and the eco-system due to the intensive management of natural, human and economic capital. Hence, a sustainable and resilient transition of the food systems is required through a multi-faceted approach that tackles the causes of unsustainability and promotes sustainable practices at all levels of the food system. In this respect, a territorial approach becomes a relevant entry point of analysis for the food system’s multifunctionality and can support the evaluation of sustainability by quantifying impacts associated with quantitative methods and understanding the territorial responsibility of different actors with qualitative ones. Against this background the present research aims to i) investigate the environmental, costing and social indicators suitable for a scoring system able to measure the integrated sustainability performance of food initiatives within the City/Region territorial context; ii) develop a territorial assessment framework to measure sustainability impacts of agricultural systems; and iii) define an integrated methodology to match production and consumption at a territorial level to foster a long-term vision of short food supply chains. From a methodological perspective, the research proposes a mixed quantitative and qualitative research method. The outcomes provide an in-depth view into the environmental and socio-economic impacts of food systems at the territorial level, investigating possible indicators, frameworks, and business strategies to foster their future sustainable development.

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I vantaggi dell’Industria 4.0 hanno stravolto il manufacturing. Ma cosa vuol dire "Industria 4.0"? Essa è la nuova frontiera del manufacturing, basata su princìpi che seguono i passi avanti dei sistemi IT e della tecnologia. Dunque, i suoi pilastri sono: integrazione, verticale e orizzontale, digitalizzazione e automazione. L’Industria 4.0 coinvolge molte aree della supply chain, dai flussi informativi alla logistica. In essa e nell’intralogistica, la priorità è sviluppare dei sistemi di material handling flessibili, automatizzati e con alta prontezza di risposta. Il modello ideale è autonomo, in cui i veicoli fanno parte di una flotta le cui decisioni sono rese decentralizzate grazie all'alta connettività e alla loro abilità di collezionare dati e scambiarli rapidamente nel cloud aziendale.Tutto ciò non sarebbe raggiungibile se ci si affidasse a un comune sistema di trasporto AGV, troppo rigido e centralizzato. La tesi si focalizza su un tipo di material handlers più flessibile e intelligente: gli Autonomous Mobile Robots. Grazie alla loro intelligenza artificiale e alla digitalizzazione degli scambi di informazioni, interagiscono con l’ambiente per evitare ostacoli e calcolare il percorso ottimale. Gli scenari dell’ambiente lavorativo determinano perdite di tempo nel tragitto dei robot e sono queste che dovremo studiare. Nella tesi, i vantaggi apportati dagli AMR, come la loro decentralizzazione delle decisioni, saranno introdotti mediante una literature review e poi l’attenzione verterà sull’analisi di ogni scenario di lavoro. Fondamentali sono state le esperienze nel Logistics 4.0 Lab di NTNU, per ricreare fisicamente alcuni scenari. Inoltre, il software AnyLogic sarà usato per riprodurre e simulare tutti gli scenari rilevanti. I risultati delle simulazioni verranno infine usati per creare un modello che associ ad ogni scenario rilevante una perdita di tempo, attraverso una funzione. Per questo saranno usati software di data analysis come Minitab e MatLab.

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A partire dagli anni ’70, il modello di sviluppo legato alla crescita economica ha cominciato ad essere messo in discussione ed è iniziato ad emergere un nuovo modello basato sulla sostenibilità, nel quale lo sviluppo non è solo economico, ma anche sociale ed ambientale, e che tiene conto non solo dei bisogni attuali ma anche di quelli futuri. Al fine di analizzare in maniera scientifica queste problematiche, nel corso dei decenni successivi sono state create delle metodologie utili a quantificare l’impatto ambientale legato al ciclo di vita dei prodotti, in modo tale da individuare dei miglioramenti da implementare nelle fasi critiche individuate. Una delle metodologie più diffuse è quella del Life Cycle Assessment (LCA), la quale quantifica i flussi di materia ed energia appartenenti ad un ciclo di vita di un prodotto e ne valuta gli impatti ambientali. L’obiettivo dell’analisi LCA elaborata in questa tesi è valutare lo scenario as-is di produzione delle cassette a sponde abbattibili utilizzate nella filiera dell’ortofrutta di CPR System, ma anche valutare scenari alternativi ad esso ed identificare possibilità di migliorare il modo in cui vengono prodotte le cassette, in modo da facilitare il raggiungimento di specifici obiettivi di performance ambientali, sempre più necessari nell’attuale panorama industriale. Partendo dalla progettazione di un database e dalla raccolta dati del sistema aziendale analizzato, l’elaborato descrive la modellizzazione del ciclo di vita attraverso il software SimaPro e delle fasi eseguite per individuare le criticità principali e valutare scenari alternativi per ridurre l’impatto delle cassette a sponde abbattibili prodotte.

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Le criticità sorte in seguito alla diffusione della Pandemia da Covid-19, a partire dal 2020, sono numerose. In tal senso, all’interno della logistica, rivestono un ruolo molto rilevante i numerosi ritardi nelle consegne, che trovano maggiore evidenza nelle spedizioni via mare. Pertanto, l’adozione di strategie volte ad aumentare la resilienza delle catene di approvvigionamento, rendendole in grado di resistere alle criticità del presente e alle possibili evoluzioni del futuro, diventa sempre più importante. L’obiettivo del presente studio è l’individuazione di una strategia che permetta di rispondere alle criticità legate ai ritardi nelle consegne dei materiali, per ridurre i problemi da essi causati. L’azienda in cui questo studio è stato svolto è la Ducati Motor Holding S.p.A., produttrice di motocicli. Infatti, nelle aziende manifatturiere, il ritardo nell’arrivo dei componenti determina delle conseguenze nella produzione ed eventuali ritardi nella consegna del prodotto finito. Per fronteggiare queste difficoltà, il metodo individuato consiste nell’analisi dei dati storici relativi ai ritardi rilevati e nella previsione dei ritardi futuri, utilizzando le tecniche di previsione basate sulle serie storiche. L’individuazione del numero di giorni di ritardo previsti viene utilizzata per determinare ogni mese il margine di copertura ottimale con cui effettuare gli ordini ai fornitori, in modo da evitare problemi nella produzione. Questo margine di copertura è definito dinamico, poiché non è fissato tutto l’anno per un medesimo materiale, ma varia ogni mese in base alle previsioni effettuate, garantendo così la flessibilità necessaria per rispondere alle contingenze esterne. In questo modo, riducendo i ritardi nelle consegne e, di conseguenza, i ritardi nella produzione, si ottiene un risparmio economico in termini di costi da sostenere, considerando i costi di stoccaggio e i costi di recupero delle moto incomplete.

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The relationship between companies is an important issue in the management of supply chains. Several aspects relating to the flow and exchange of information along the chain are considered as having a decisive influence on the success of this relationship. The main objective of this work was to structured and test models that link aspects of this nature with performance and the purchaser-supplier relationship in the supply chain. Aspects relevant to communication and the use do IT in relationships between companies were investigated. The importance of performance in this relationship was also investigated. The research were based on empirical data obtained by means of structural equation modeling. The results show that some aspects contribute in a significant way to the success of this relationship while others that, a priori, are considered important make no contribution.

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Purpose - The purpose of this paper is to examine whether the level of logistics information systems (LIS) adoption in manufacturing companies is influenced by organizational profile variables, such as the company`s size, the nature of its operations and their subsectors. Design/methodology/approach - A review of the mainstream literature on US was carried out to identify the factors influencing the adoption of such information systems and also some research gaps. The empirical study`s strategy is based on a survey research in Brazilian manufacturing firms from the capital goods industry. Data collected were analyzed through Kruskall-Wallis and Mann Whitney`s non-parametric tests. Findings - The analysis indicates that characteristics such as the size of companies and the nature of their operations influence the levels of LIS adoption, whilst comparisons regarding the subsectors appeared to be of little influence. Originality/value - This is the first known study to examine the influence of organizational profiles such as size, nature of operations and subsector on the level of US adoption in manufacturing companies. Moreover, it is unique in portraying the Brazilian scenario on this topic and addressing the adoption of seven types of LIS in a single study.

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This paper presents the results from 92 cycles of an anaerobic sequencing batch biofilm reactor containing biomass immobilized on inert support (mineral coal) applied for the treatment of an industrial wastewater containing high sulfate concentration. The pilot-scale reactor, with a total volume of 1.2 m(3), was operated at sulfate loading rates ranging from 0.15 to 1.90 kgSO(4)(2-)/cycle (48 It - cycle) corresponding to sulfate concentrations of 0.25 to 3.0 gSO(4)(2-) l(-1). Domestic sewage and ethanol were utilized as electron donors for sulfate reduction. Influent sulfate concentrations were increased in order to evaluate the minimum COD/sulfate ratio at which high reactor performance could be maintained. The mean sulfate removal efficiency remained between the range of 88 to 92% at several sulfate concentrations. Temporal profiles along the 48 h cycles were carried out under stable operation at sulfate concentrations of 1.0, 2.0 and 3.0 gSO(4)(2-) l(-1). Sulfate removal reached 99% for cycle times of 15, 25, and 30 h, and the effluents sulfate concentrations were lower than 8 mgSO(4)(2-) l(-1). The results demonstrate the potential applicability of the anaerobic configuration for the biological treatment of sulfate-rich wastewaters. (C) 2009 Elsevier B.V. All rights reserved.

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Purpose - The purpose of this paper is to provide a framework for radio frequency identification (RFID) technology adoption considering company size and five dimensions of analysis: RFID applications, expected benefits business drivers or motivations barriers and inhibitors, and organizational factors. Design/methodology/approach - A framework for RFID adoption derived from literature and the practical experience on the subject is developed. This framework provides a conceptual basis for analyzing a survey conducted with 114 companies in Brazil. Findings - Many companies have been developing RFID initiatives in order to identify potential applications and map benefits associated with their implementation. The survey highlights the importance business drivers in the RFID implementation stage, and that companies implement RFID focusing on a few specific applications. However, there is a weak association between expected benefits and business challenges with the current level of RFID technology adoption in Brazil. Research limitations/implications - The paper is not exhaustive, since RFID adoption in Brazil is at early stages during the survey timeline. Originality/value - The main contribution of the paper is that it yields a framework for analyzing RFID technology adoption. The authors use this framework to analyze RFID adoption in Brazil, which proved to be a useful one for identifying key issues for technology adoption. The paper is useful to any researchers or practitioners who are focused on technology adoption, in particular, RFID technology.

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Purpose - The purpose of this paper is to verify if Brazilian companies are adopting environmental requirements in the supplier selection process. Further, this paper intends to analyze whether there is a relation between the level of environmental management maturity and the inclusion of environmental criteria in the companies` selection of suppliers. Design/methodology/approach - A review of mainstream literature on environmental management, traditional criteria in the supplier selection process and the incorporation of environmental requirements in this context. The empirical study`s strategy is based on five Brazilian case studies with industrial companies. Face-to-face interviews and informal conversations are to be held, explanations made by e-mail with representatives from the purchasing, environmental management, logistics and other areas, and observation and the collection of company documents are also employed. Findings - Based on the cases, it is concluded that companies still use traditional criteria to select suppliers, such as quality and cost, and do not adopt environmental requirements in the supplier selection process in a uniform manner. Evidence found shows that the level of environmental management maturity influences the depth with which companies adopt environmental criteria when selecting suppliers. Thus, a company with more advanced environmental management adopts more formal procedures for selecting environmentally appropriate suppliers than others. Originality/value - This is the first known study to verify if Brazilian companies are adopting environmental requirements in the supplier selection process.

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This article aims to analyse the introduction of environmental issues in the context of the production function, which has been referred to as the organisational area to lead corporate environmental management. With that purpose, the theoretical references for corporate environmental management and the necessary alterations in production function have been organised to include environmental aspects, especially in terms of product and process development, quality management, and logistics. Considering that this research field still lacks empirical evidence for Brazilian companies, four case studies were conducted using companies located in the country. The environmental management maturity level of those companies tends to follow the rate with which the environmental issue is introduced in production sub-areas, especially in the product development process. However, in most cases we found that the companies had difficulties in structuring the insertion of the environmental dimension in logistics. The final notes point out the distance observed between what is recommended by international literature and the reality of Brazilian companies in the challenge of making the production function environmentally friendly.