Thèses : « Simulation Process Management »

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Runge, Torsten, et Kondragunda Narendra. « Teamcenter Simulation Process Management ». Technische Universität Chemnitz, 2018. https://monarch.qucosa.de/id/qucosa%3A21532.

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Manage your simulation processes, data, tools and workflows The pressure to shorten time-to-market while improving product performance and quality is driving the increased use of simulation throughout the product lifecycle. However, without some form of simulation data management, simulation itself can become a process bottleneck. The Teamcenter simulation process management solution has been specifically designed to help you get control of your simulation data and processes in the context of an overall product lifecycle management (PLM) system. With Teamcenter, you can avoid common problems such as analyses being performed on obsolete data, poor visibility to simulation results, and results arriving too late to influence design direction. You can efficiently manage and share complex product simulations so they are available to all product decision-makers across your business.

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Ettefaghian, Alireza. « Automated input data management in manufacturing process simulation ». Thesis, University of Greenwich, 2015. http://gala.gre.ac.uk/14122/.

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Input Data Management (IDM) is a time consuming and costly process for Discrete Event Simulation (DES) projects. Input Data Management is considered as the basis of real-time process simulation (Bergmann, Stelzer and Strassburger, 2011). According to Bengtsson et al. (2009), data input phase constitutes on the average about 31% of the time of an entire simulation project. Moreover, the lack of interoperability between manufacturing applications and simulation software leads to a high cost to users in developing custom-built interfaces (NIST, 2011). Therefore, a standard structure is needed to facilitate data exchange within different manufacturing data from various sources and simulation packages (Harari, 2012). This work aims to develop an IDM system in order to enhance automatic data exchange within manufacturing process simulation projects. The approach is to use a Business Intelligence (BI) package to extract and collect simulation data from various sources, and then import to a DES application. Thus, a simulation model can be automatically updated in DES application by real-time system data. The prototype system is currently implemented in pilot-scale, and results are based on sample data files retrieved from the Simulation Engineering Department at Ford Motor Company. In addition to automatic data management, the system also generates an interoperable data file, which is compatible with most DES packages for simulation experiments. For the first time, a Business Intelligence system is applied to simulation data management projects, and is introduced as a novel solution for this context. The results of pilot-implementation indicated the possibility of direct connection between raw data sources and model database. The direct connection allows DES applications to integrate with different business systems without the need of plug-in translators for interpreting the exchanged data file. The system developed also reduces the number of human-driven processes through model update procedures. Also, it is found that the BI package can be integrated with existing middleware used in a company, to maintain an “as-is” simulation procedure, and minimise the possibility of process change in systematic model update.

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Polyakov, Denis, et Willi Gründer. « Design Process Management ». Saechsische Landesbibliothek- Staats- und Universitaetsbibliothek Dresden, 2017. http://nbn-resolving.de/urn:nbn:de:bsz:14-qucosa-228289.

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Aus der Einleitung: "Arbeitsabläufe werden in der Regel durch eine jahrzehntelange Praxis geprägt. Eine Vielzahl von individuellen Gewohnheiten und Aspekten bildet oft eine hermetische Abgrenzung gegenüber allen Versuchen, organisatorische Veränderungen herbeizuführen. Dies gilt in besonderem Maße für die Konstruktion. Die unvoreingenommene Betrachtung heutiger Konstruktionsabläufe lässt uns feststellen, dass der Arbeitsprozess an sich seit Anbeginn vor vielen tausend Jahren fast unverändert geblieben ist. Abgesehen von einer Reihe mehr oder weniger voneinander isolierter Computer-Aided Software-Tools, die den Konstrukteur bei der Modellierung, Simulation und Datenspeicherung unterstützen, bekommt er keine weiteren Hilfestellungen. Eine Ausnahme bilden hier automatisierte Verfahrensketten, die auf der Basis fest definierter Produktmodelle in parametrisierten Verfahren Fertigungsunterlagen automatisch erstellen können. Prozessorientiert sind auch neuere Benutzeroberflächen zur Kopplung von Simulationsanwendungen. Hiermit können Anwendungen über mehrere Softwareapplikationen hinweg geschaffen werden (ModelCenter, modeFrontier). Das Wissensmanagement hingegen ist so gut wie gar nicht in die Abläufe integriert, lässt man die Fülle der Freigabeprozeduren einmal außen vor."

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Von, Raubenheimer Albert Ludwich. « Strategic supply chain management using simulation ». Pretoria : [s.n.], 2005. http://upetd.up.ac.za/thesis/available/etd-12012005-092956/.

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Polyakov, Denis, et Willi Gründer. « Design Process Management ». TUDpress - Verlag der Wissenschaften GmbH, 2012. https://tud.qucosa.de/id/qucosa%3A29486.

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Aus der Einleitung: "Arbeitsabläufe werden in der Regel durch eine jahrzehntelange Praxis geprägt. Eine Vielzahl von individuellen Gewohnheiten und Aspekten bildet oft eine hermetische Abgrenzung gegenüber allen Versuchen, organisatorische Veränderungen herbeizuführen. Dies gilt in besonderem Maße für die Konstruktion. Die unvoreingenommene Betrachtung heutiger Konstruktionsabläufe lässt uns feststellen, dass der Arbeitsprozess an sich seit Anbeginn vor vielen tausend Jahren fast unverändert geblieben ist. Abgesehen von einer Reihe mehr oder weniger voneinander isolierter Computer-Aided Software-Tools, die den Konstrukteur bei der Modellierung, Simulation und Datenspeicherung unterstützen, bekommt er keine weiteren Hilfestellungen. Eine Ausnahme bilden hier automatisierte Verfahrensketten, die auf der Basis fest definierter Produktmodelle in parametrisierten Verfahren Fertigungsunterlagen automatisch erstellen können. Prozessorientiert sind auch neuere Benutzeroberflächen zur Kopplung von Simulationsanwendungen. Hiermit können Anwendungen über mehrere Softwareapplikationen hinweg geschaffen werden (ModelCenter, modeFrontier). Das Wissensmanagement hingegen ist so gut wie gar nicht in die Abläufe integriert, lässt man die Fülle der Freigabeprozeduren einmal außen vor."

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Arikan, Merve. « Systems Engineering Process Modeling And Simulation ». Master's thesis, METU, 2012. http://etd.lib.metu.edu.tr/upload/12615164/index.pdf.

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In this study, an approach is proposed to model and simulate the systems engineering process of design projects. One of the main aims is to model the systems engineering process, treating the process itself as a complex system. A conceptual model is developed as a result of a two-phase survey conducted with systems engineers. The conceptual model includes two levels of activity networks. Each first level systems engineering activity has its own network of second level activities. The model is then implemented in object oriented modeling language, namely SysML, using block definition diagrams and activity diagrams. Another aim is to generate a discrete event simulation model of the process for performance evaluation. For this purpose the SysML model is transformed to an Arena model using an Excel interface and VBA codes. Three deterministic and three stochastic cases are created to represent systems engineering process alternatives, which originate from the same conceptual model but possess different activity durations, resource availabilities and resource requirements. The scale of the project and the effect of uncertainty in activity durations are also considered. The proposed approach is applied to each of these six cases, developing the SysML models, transforming them to Arena models, and running the simulations. Project duration and resource utilization results are reported for these cases.

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Evenson, Grey Rogers. « A Process-Comprehensive Simulation-Optimization Framework for Watershed Scale Wetland Restoration Planning ». The Ohio State University, 2014. http://rave.ohiolink.edu/etdc/view?acc_num=osu1406213250.

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Masood, Uzzafer. « Simulation of strategic management process of software projects : a dynamic approach ». Thesis, University of Nottingham, 2014. http://eprints.nottingham.ac.uk/14039/.

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This research presents and validates a simulation model for the strategic management process of software projects. The proposed simulation model maps strategic decisions with parameters of strategic importance and links them to project management plans. Hence, the proposed simulation model is a complete framework for the analysis and the selection of strategic decisions for the development of software projects. The proposed framework integrates critical elements of software development projects, i.e. risk assessment, cost estimation and project management planning, for the analysis of strategic decisions which helps in choosing a strategic decision, among various strategic alternatives for the project, that suits the requirement of an organization the best. The simulation model captures the effects of strategic decisions on parameters of software projects in dynamic settings during the simulation of different phases of the development. The dynamic variations in project parameters affect project management plans. Capturing these variations of strategic parameters in dynamic settings brings out critical information about strategic decisions for the effective project management planning. This research work explains that the measure of risk and contingency estimates are fundamental, in-addition to risk assessment and cost estimation, for the strategic management of software development projects. Therefore, risk measure and contingency estimation models are developed for software projects. The proposed simulation model is generic, i.e. having generic components with plug-and-play interfaces; hence, it is independent of any risk assessment, cost estimation, risk measurement and contingency estimation models and project management tools for software development projects. This research presents a successful case study which shows that different strategic management decisions produce different sets of risk and cost options, as well as different project management plans for the development of software projects.

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Hughes, Nina(Nina Yuchen). « Reverse logistics supply chain process modeling and simulation ». Thesis, Massachusetts Institute of Technology, 2019. https://hdl.handle.net/1721.1/122581.

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Thesis: M.B.A., Massachusetts Institute of Technology, Sloan School of Management, 2019, In conjunction with the Leaders for Global Operations Program at MIT
Thesis: S.M., Massachusetts Institute of Technology, Department of Civil and Environmental Engineering, 2019, In conjunction with the Leaders for Global Operations Program at MIT
Cataloged from PDF version of thesis.
Includes bibliographical references (page 67).
As consumer preferences shift towards online shopping and utilizing their homes as fitting rooms, traditional brick and mortar retailers are faced with the challenge to adapt. Many retailers are experiencing a growing number of returned merchandize, many of which cannot be easily resold to consumers due to various supply chain challenges. This thesis explores the opportunities to improve the consumer returns process and presents methods for modeling the supply chain process for reverse logistics in the retail industry derived from case studies. The model then allows for hypothesis testing. By changing parameters in the model, this thesis further explores the scenarios in which the supply chain process may be improved to increase margin and decrease cost. The primary recommendations include specific modifications to the current reverse supply chain flow, enabling new channels that improve speed and margin, as well as developing the decision tool further for better accuracy and integration into the supply chain.
by Nina Hughes.
M.B.A.
S.M.
M.B.A. Massachusetts Institute of Technology, Sloan School of Management
S.M. Massachusetts Institute of Technology, Department of Civil and Environmental Engineering

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Ekman, Mats. « Urban water management : Modelling, simulation and control of the activated sludge process ». Licentiate thesis, Uppsala universitet, Avdelningen för systemteknik, 2003. http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-86143.

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During the last few decades, wastewater treatment processes in urban water management have become more and more efficient and complex. Several factors such as urbanization, stricter legislations on effluent quality, economics, increased knowledge of the involved biological, chemical and physical processes as well as technical achievements have been important incentives for the development of more efficient procedures for wastewater treatment plants. Future requirements on more sustainable urban water systems, in combination with increasing wastewater loads, will most probably further increase the need for optimization and control of both existing and emerging wastewater treatment processes. In this thesis estimation, modelling and control strategies are developed in order to improve the efficiency of the activated sludge process. The first part of the thesis presents a JAVA based simulator of the activated sludge process. An overview of its features, with some emphasis on implemented control strategies, is given. In particular, a new control strategy for the internal recycling flow rate is described. A summary of experiences from using the simulator as a teaching and training tool is also given. The second part of the thesis includes a derivation of reduced order models for the activated sludge process. The resulting models, a time-varying linear state-space model for the anoxic part and a time-varying bilinear state-space model for the aerobic part, are intended to be used for control applications. In the third part, an adaptive control strategy for control of the nitrate level using an external carbon source is presented. The controller adapts and compensates for changes in the system dynamics since important system parameters are estimated adaptively and incorporated on-line in the control design. The estimated system parameters and model states also give guidance about the state of the process and the characteristics of the wastewater. Several simulation examples are used to illustrate the control law. Finally, a new suboptimal control law for the bilinear quadratic regulator problem with infinite final time is presented. The control strategy is evaluated in a simulation study, where special concern is devoted to controlling the activated sludge process, using the bilinear model developed in the second part of this thesis.

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Karanwal, Anup. « Implementation of Simulation Techniques for Supply Chain Risk Management in Process Industry ». Thesis, KTH, Industriell produktion, 2017. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-218019.

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Ladeinde, Olurotimi Adeboye. « An Empirical Study on User Acceptance of Simulation Techniques for Business Process ». ScholarWorks, 2011. https://scholarworks.waldenu.edu/dissertations/911.

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Non acceptance of technology may result in serious damages to organizations. For example, non acceptance of simulation technology cost Merrill Lynch Bank over {dollar}50 billion in 2008, while statistics in 2 separate studies showed that non acceptance of technology was responsible for a 57% decrease in performance level for physicians practicing in public tertiary hospitals in Hong Kong, and a 39% decrease in productivity for hotel workers in Seoul, Korea. The problem addressed in this research was non acceptance of simulation technology by project managers. This research investigated the correlation among personal innovativeness, organizational innovativeness, perceived usefulness, perceived ease of use, and intention to use simulation techniques by members of the Project Management Institute (PMI). The theory of reasoned action (TRA) and the extended technology acceptance model (TAM) served as the theoretical foundations for the study. In this quantitative, correlational survey study, data were obtained from a random sample of the PMI membership. Simple regression analysis was used to address research questions. Results indicate significant correlations of moderate strength among usefulness, innovativeness, ease of use, and intention to use simulation technology. The study contributes to positive social change by identifying factors that help companies to improve their business processes, generate more profits, create jobs, and make positive contributions to the communities in which they are located.

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Yamac, Pinar Isil. « Improvement Proposal For A Software Requirements Management Process ». Master's thesis, METU, 2006. http://etd.lib.metu.edu.tr/upload/12607268/index.pdf.

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This thesis focuses on measurement based software process improvement, especially improvement of requirements change management process. The literature on software measurement is investigated, software process improvement methodologies are studied and requirements change management metrics are examined. Requirements change management process at a private company working in the defense industry is observed and metrics obtained from various tools have been aggregated. Moreover, an improvement proposal, which also simplifies collecting metrics, is presented for the requirements change management process. A tool is developed for evaluating the performance of the improvement proposal using event driven simulation method.

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Scullin, Michelle E. « Integrating Value Stream Mapping and Simulation ». Diss., CLICK HERE for online access, 2005. http://contentdm.lib.byu.edu/ETD/image/etd898.pdf.

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Baca, Cristen C. (Cristen Camille) 1970. « Simulation tool for the improvement of the coating development process ». Thesis, Massachusetts Institute of Technology, 2002. http://hdl.handle.net/1721.1/84332.

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Thesis (S.M.)--Massachusetts Institute of Technology, Sloan School of Management; and, (S.M.)--Massachusetts Institute of Technology, Dept. of Mechanical Engineering; in conjunction with the Leaders for Manufacturing Program at MIT, 2002.
Includes bibliographical references.
by Cristen C. Baca.
S.M.

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Becerra, Carrasco Adriana Maria, et Parasi Alessandro Rafael Villanueva. « Propuesta de reducción de tiempo de entrega de pedidos en una Mype del sector gráfico en Lima, mediante la utilización de herramientas Lean Manufacturing como VSM, SMED y KANBAN ». Bachelor's thesis, Universidad Peruana de Ciencias Aplicadas (UPC), 2020. http://hdl.handle.net/10757/652562.

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El sector gráfico en Perú se encuentra constantemente con la necesidad de reducir tiempos de producción al intentar mantenerse dentro del entorno competitivo porque las entregas tardías al cliente ocasionados por el elevado tiempo de fabricación son problemas críticos. Estudios previos han propuesto utilizar la filosofía de Lean Manufacturing para reducir los tiempos de inactividad mejorando el flujo de información dentro de los procesos de producción. Estos estudios se basan en las grandes empresas manufactureras, pero no en las MYPES del sector gráfico que utilizan un entorno de fabricación bajo pedido. Por lo cual, este documento se centra en el uso de la herramienta Lean Manufacturing ajustada en una empresa MYPE con un entorno de fabricación bajo pedido para reducir sus tiempos de fabricación. Por lo tanto, los procesos Kanban, Single Minute Exchange of Dies (SMED) y Value Stream mapping (VSM) se adaptarán para su implementación en este tipo de empresas. Luego, el modelo se valida mediante su aplicación con el programa ARENA basándose en un caso de estudio. Esta simulación de procesos permitió que los tiempos de producción se redujeran en un 24%, entregando todos los pedidos a tiempo y eliminando el 100% de los costos de penalización por pedidos retrasados.
The printing sector in Peru constantly faces the need to reduce production time because late deliveries to the customer owing to high manufacturing time are critical problems. Previous studies have proposed using the lean manufacturing philosophy to reduce idle times by improving the flow of information within the production processes in large manufacturing companies but not printing SMEs using these tools in a make-to-order environment. This document focuses on implementing an affordable lean manufacturing model in an SME company with a make-to-order environment to reduce its manufacturing times. Therefore, the Kanban, Single Minute Exchange of Dies (SMED), and value stream mapping (VSM) processes will be adapted for implementation in these companies. Then, the model is validated through its application in a case study; through process simulation, production times were reduced by 24% for an SME, delivering all orders on time, and eliminating 100% penalty costs for late orders.
Trabajo de Suficiencia Profesional

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Agarwal, Ravikant. « A flexible model for multi-agent based simulation of software development process ». Auburn, Ala., 2007. http://repo.lib.auburn.edu/2007%20Fall%20Dissertations/Agarwal_Ravikant_38.pdf.

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Mayer, Natalie [Verfasser]. « Integrated simulation approach from process simulation to structural analysis for composite components considering manufacturing effects / Natalie Mayer ». München : Verlag Dr. Hut, 2017. http://d-nb.info/1149579730/34.

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Snell, Tim, et Pontus Persson. « Application of discrete event simulation for assembly process optimization : Buffer and takt time management ». Thesis, Luleå tekniska universitet, Institutionen för teknikvetenskap och matematik, 2020. http://urn.kb.se/resolve?urn=urn:nbn:se:ltu:diva-78959.

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A master thesis within mechanical engineering performed by two student has been conducted at Scania in Oskarshamn. The purpose has been to investigate if Discrete Event Simulation using ExtendSim can be applied to increase Scanias assembly productivity. The projectiles was to investigate how the buffer systems could be managed by vary the amount of buffers and their transport speed. The assembly line takt times with regard of their availability was also investigated. The method of approach was to build a simulation model to gaining valid decision making information regarding these aspects. Process stop data was extracted and imported to ExtendSim where the reliability library was used to generate shutdowns. Comparing 24 sets over 100 runs to each other a median standard deviation of 0,91 % was achieved. Comparing the total amount of assembled cabs over a time period of five weeks with the real timedata a difference of 4,77 % was achieved. A difference of 1,85 % in total amount of shutdown time was also achieved for the same conditions. The biggest effect of varying buffer spaces was for system 6A. An increasement of up to 20 more assembled cabs over a time period of five weeks could then be achieved. By increasing all the buffertransports speeds by 40 % up to 20 more assembled cabs over a time period of ve weeks could be achieved. A push and pull system was also investigated where the push generated the best results. A 22 hour decreasement of total shutdown time and an increasement of 113 more assembled cabs over a time period of ve weeks could be achieved.

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Young, Eric S. M. Massachusetts Institute of Technology. « Amazon UK transshipment stow process analysis through discrete event simulation ». Thesis, Massachusetts Institute of Technology, 2016. http://hdl.handle.net/1721.1/106075.

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S.M. Massachusetts Institute of Technology, Department of Electrical Engineering and Computer Science 2016 In conjunction with the Leaders for Global Operations Program at MIT.
Thesis: M.B.A., Massachusetts Institute of Technology, Sloan School of Management, 2016. In conjunction with the Leaders for Global Operations Program at MIT..
Cataloged from PDF version of thesis.
Includes bibliographical references (pages 62-63).
This thesis investigated Amazon's implementation of transshipment, the act of moving inventory between fulfillment centers to facilitate order fulfillment, inventory rebalancing, and operational cost reduction. The role of transshipment in Amazon's fulfillment center network was explored and a proposed transshipment stow process is modelled to examine potential reductions in transshipment cycle time. As Amazon's fulfillment network has grown in size, the function of individual fulfillment center has evolved from shipping customer orders to providing a network-level, low-cost fulfillment option through transshipment. The complexity of this process, from the source fulfillment center to transportation and finally to the destination fulfillment center is examined in-depth to provide insight into transshipment processes that are typically not considered or modelled in research. One particular process-transshipment stow-was determined to have a large impact on transshipment cycle time. A proposed transshipment tote stow process was envisioned and modeled using discrete event simulation in order to determine cycle time savings versus volume efficiency tradeoffs. While the proposed transshipment tote stow process simulation was able to reduce transshipment cycle time by more than 80%, the tote stow process required an additional 7.5x amount of space compared to the current stow process. Based on initial simulations, the benefits of transshipment tote stow cycle time reduction does not outweigh the costs in space utilization. Transshipment-specific item stowing areas with periodic inventory consolidation may be the best tradeoff between cycle time, additional processes, and space.
by Eric Young.
S.M.
M.B.A.

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Ovesson, Elin, et Niklas Stadler. « Creation of a Simulation Model based upon Process Mapping within Pipeline Management at Scania ». Thesis, Linköpings universitet, Logistik, 2013. http://urn.kb.se/resolve?urn=urn:nbn:se:liu:diva-96797.

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This is a Master’s Thesis that has been carried out at the Global Outbound Logistics department at Scania. Scania manufactures trucks, buses and engines. Some trucks and buses are delivered to markets where it, due to reduced customs duties and cheaper manpower, is more profitable to do the assembly locally at so called Regional Product Centres (RPCs). Since the components are produced far away from the RPC markets the lead times become long. In addition, the customers’ buying behaviour at the RPC markets is often not comparable to the European culture were a customer can accept to wait for weeks for a unit to be delivered. The long lead time in combination with the customer behaviour implies that the RPCs need to keep a certain selection of standard models of buses and trucks in stock. It has turned out to be difficult for the pipeline managers at the RPCs to place order volumes that correspond well to what will be delivered to the business units or distributors later on. The result of this is high stock levels at the RPCs, which leads to an important amount of tied up capital. Due to what is explained above, the purpose of this study is “to create a simulation model, based upon a process mapping, that visualises future volume levels in the pipeline due to different demand and ordering scenarios”. The short term target, which is also the target of this study, is to increase the RPCs understanding for how different demand and ordering scenarios influence the future volume levels in the pipeline. The long term target is to reduce tied up capital by adjusting buffer levels and lead times, while still ensuring a certain service level. The model should contribute to more accurate decision making with respect to the previous mentioned aspects. First, a high level process mapping was made in order to select which flows that were suitable for being subject for a detailed mapping. Second, a detailed mapping was made during which several RPC-, process- and function responsible were interviewed. After the detailed mapping, common denominators between the flows were identified and all activities were clustered into a solution that could be generalised and suitable for all flows. Factors such as lead times, deviation risks and capacity limitations were taken into account during the aggregation of activities. When a common view of the different RPC flows had been created, the mathematical relationships for how the goods can move throughout the process could be established. Then, the development and validation of the simulation model, which was an iterative process, could start. A directive was to build the simulation model in Microsoft Excel. Interviews were made with experienced model creators in order to find out how to create a user-friendly and robust model. The creation of the simulation model started with the development of a structure and then the content of each part was defined. A final validation, which consisted of sensitivity analysis and user trials, was finally done in order to ensure the simulation models functioning and accuracy. To conclude, a simulation model that will serve as a helpful tool for the RPCs when they are to decide which order volumes to place has been created. By clearly visualising the simulation results, the simulation model will hopefully increase the RPCs’ comprehension for how the pipeline works with respect to different ordering and demand scenarios. On top of this, the method used, the process mapping and the mathematical relationships that have been defined are important input for a possible future development of a more permanent and robust non-Microsoft Excel solution. This solution could probably be even more precise, automatically updated and have an even higher granularity.

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Pydynkowski, Kara (Kara J. ). « Using process analysis and simulation to evaluate the process capability of an order processing and fulfillment system ». Thesis, Massachusetts Institute of Technology, 2015. http://hdl.handle.net/1721.1/99016.

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Thesis: M.B.A., Massachusetts Institute of Technology, Sloan School of Management, 2015. In conjunction with the Leaders for Global Operations Program at MIT.
Thesis: S.M., Massachusetts Institute of Technology, Engineering Systems Division, 2015. In conjunction with the Leaders for Global Operations Program at MIT.
Cataloged from PDF version of thesis.
Includes bibliographical references (pages 63-64).
In order to compete with online retailers that offer same-day shipping', Dell is looking to implement a Same Day Ship (SDS) program for their SmartSelection products (in-stock, build-to-stock products) in the US. Currently, Dell offers Next Business Day shipping (NBDS) for these products and wants to assess the capability of the existing processes to reliably execute the faster cycle times required for sameday shipping. Ship date commitments to customers are made based on specific order characteristics (such as payment type and in-stock availability) and on-time performance is evaluated based on whether these commitments were met. Historically, "on-time" was considered orders that were shipped on their estimated ship date or earlier and consequently processes and systems evolved around these goals. Current metrics indicate a significant opportunity to offer an earlier ship date to customers but a detailed process assessment was necessary to enable fact-based decision-making. This thesis examines the process capability of Dell's payment processing and order fulfillment processes in order to assess the risks and make informed decisions related to expanding a Same Day Ship (SDS) program. Research was conducted by observing current processes, analyzing historical data and participating on a Same Day Ship pilot launch. Simulation modeling was then used to evaluate and understand how changes to the individual processes would affect overall performance. Analysis of historical data shows high volatility in Dell's current processes, indicating that a full-scale Same Day Ship program would not be successful without process improvements. Results and observations from the Same Day Ship pilot, however reveal that under certain conditions, a same-day ship commitment can be met with over 95% reliability. The differences in these results can be attributed to process improvements that reduced variation as well as focused commitment on behalf of the pilot team. Finally, simulation and scenario modelling show that on the full volume of product offerings, improvements greater than 75% to the mean and standard deviation in both payment and fulfillment will be necessary in order to ensure a consistent same-day ship performance of over 95% without substantial prioritization. This framework can be extended to other areas of business in which cycle time is a key metric for process performance. Using a multi-dimensional approach to evaluate process capability can offer insights into highly variable systems that traditional process capability analysis will not allow.
by Kara Pydynkowski.
M.B.A.
S.M.

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Xin, Chen Hilario Lorenzo. « Modelling resources in simulation engineering design processes ». Thesis, University of Cambridge, 2017. https://www.repository.cam.ac.uk/handle/1810/269709.

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The planning and scheduling of appropriate resources is essential in engineering design for delivering quality products on time, within cost and at acceptable risk. There is an inherent complexity in deciding what resources should perform which tasks taking into account their effectiveness towards completing the task, whilst adjusting to their availabilities. The right resources must be applied to the right tasks in the correct order. In this context, process modelling and simulation could aid in resource management decision making. However, most approaches define resources as elements needed to perform the activities without defining their characteristics, or use a single classification such as human designers. Other resources such as computational and testing resources, amongst others have been overlooked during process planning stages. In order to achieve this, literature and empirical investigations were conducted. Firstly, literature investigations focused on what elements have been considered design resources by current modelling approaches. Secondly, empirical studies characterised key design resources, which included designers, computational, testing and prototyping resources. The findings advocated for an approach that allows allocation flexibility to balance different resource instances within the process. In addition, capabilities to diagnose the impact of attaining specific performance to search for a preferred resource allocation were also required. Therefore, the thesis presents a new method to model different resource types with their attributes and studies the impact of using different instances of those resources by simulating the model and analysing the results. The method, which extends a task network model, Applied Signposting Model (ASM), with Bayesian Networks (BN), allows testing the influence of using different resources combinations on process performance. The model uses BN within each task to model different instances of resources that carries out the design activities (computational, designers and testing) along with its configurable attributes (time, risk, learning curve etc.), and tasks requirements. The model was embedded in an approach and was evaluated by applying it to two aerospace case studies. The results identified insights to improve process performance such as the best performing resource combinations, resource utilisation, resource sensitive activities, the impact of different variables, and the probability of reaching set performance targets by the different resource instances.

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Mizell, Carolyn. « QUANTITATIVE ASSESSMENT OF SOFTWARE DEVELOPMENT PROJECT MANAGEMENT ISSUES USING PROCESS SIMULATION WITH SYSTEM DYNAMICS ELEMENTS ». Doctoral diss., University of Central Florida, 2006. http://digital.library.ucf.edu/cdm/ref/collection/ETD/id/4291.

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The complexity of software development projects makes estimation and management very difficult. There is a need for improved cost estimation methods and new models of lifecycle processes other than the common waterfall process. This work has developed a new simulation model of the spiral development lifecycle as well as an approach for using simulation for cost and schedule estimation. The goal is to provide a tool that can analyze the effects of a spiral development process as well as a tool that illustrates the difficulties management faces in forecasting budgets at the beginning of a project which may encourage more realistic approaches to budgetary planning. A new discrete event process model of the incremental spiral development lifecycle approach was developed in order to analyze the effects this development approach has on the estimation process as well as cost and schedule for a project. The input data for the key variables of size, productivity, and defect injection rates in the model was based on analysis of Software Engineering Laboratory data and provided for analysis of the effects of uncertainty in early project estimates. The benefits of combining a separate system dynamics model with a discrete event process models was demonstrated as was the effects of turnover on the cost and schedule for a project. This work includes a major case study of a cancelled NASA software development project that experienced cost and schedule problems throughout its history. Analysis was performed using stochastic simulation with derived probability distributions for key software development factors. A system dynamics model of human resource issues was also combined with the process model to more thoroughly analyze the effects of turnover on a project. This research has demonstrated the benefits of using a simulation model when estimating to allow for more realistic budget and schedule determination including an interval estimate to help focus on the uncertainty of early estimates.
Ph.D.
Department of Industrial Engineering and Management Systems
Engineering and Computer Science
Industrial Engineering and Management Systems

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Široká, Zuzana. « Optimalizace výrobního procesu pomocí diskrétní simulace ». Master's thesis, Vysoké učení technické v Brně. Fakulta podnikatelská, 2010. http://www.nusl.cz/ntk/nusl-222677.

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Diploma thesis describes using discrete simulation using with help Witness simulation software as a tool to support decision-making process and the company ECKELMANN l.l.c. This work briefly introduces business processes modeling and simulation problems. Creating a model of real production process and its subsequent optimization will help us map out the processes that take place in the company, enabling discovery of strengths and weaknesses.

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Naeem, Qaiser. « Impact of Meetings in Software Process Improvement ». Thesis, Linköpings universitet, PELAB - Laboratoriet för programmeringsomgivningar, 2012. http://urn.kb.se/resolve?urn=urn:nbn:se:liu:diva-76685.

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In this thesis we have described the role of meetings in software development and their impact on process improvement. We have investigated some factors; which could be used to improve organization process e.g. strategic management, understanding of business and its processes, learning and evaluation of resources. A survey has been conducted with the help of a questionnaire to analyze the meeting practices in the small and medium scale software companies. A process model and a simulation have been designed to measure the impacts of meetings on the productivity of organizations which claim the utilization of agile process. The designed model is an extension of Hamid & Madnick’s process model and the simulation is a newly developed web based application that performs meeting scheduling. The application is developed with the concept of Software As A Service (SAAS) by using the Framework Symfony and programming languages PHP and MySQL.

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Taskinen, Leo Tapani. « Measuring change management in manufacturing processes : a measurement method for simulation-game-based process development / ». Espoo [Finland] : Technical Research Centre of Finland, 2002. http://www.vtt.fi/inf/pdf/publications/2002/P474.pdf.

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Zhang, Hong. « Process design, verification, and simulation an implementation in a visual modeling tool for a workflow management system / ». [S.l. : s.n.], 2001. http://deposit.ddb.de/cgi-bin/dokserv?idn=964848910.

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Proctor, Clinton Lee. « Improving operational effectiveness in the job-shop environment through discrete event simulation and innovative process design ». Thesis, Massachusetts Institute of Technology, 2018. https://hdl.handle.net/1721.1/122281.

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Thesis: M.B.A., Massachusetts Institute of Technology, Sloan School of Management, 2018, In conjunction with the Leaders for Global Operations Program at MIT
Thesis: S.M., Massachusetts Institute of Technology, Department of Mechanical Engineering, 2018, In conjunction with the Leaders for Global Operations Program at MIT
Cataloged from PDF version of thesis.
Includes bibliographical references (page 63).
A key value stream for Company X is a manufacturing area dedicated to production of precision electro-mechanical systems, of which they are contracted to service during the complete lifecycle. Currently, the production system is dedicated to the refurbishment of these electro-mechanical systems; it could be characterized as a high-mix low volume production system with a-job-shop layout. The operations team is being pressured to increase both production volumes and the product mix, while maintaining a competitive cost structure in a highly constrained environment, in terms of both space and resources. This thesis proposes two distinct projects to address the challenges faced. First, develop a framework to analyze the value stream, utilizing a discrete event simulation (DES) tool to characterize the production system.
The method will validate the DES tool against the current state production system and key performance indicators (KPI's) then conduct what-if analyses and studies based upon anticipated contractual obligations. This effort will identify risks within the value stream related to the transition from current state to future state, while studying the impact of changes in shipment volumes, product mix, direct labor, and capital equipment. This model supported conclusions and recommendations drawn, based upon the results of the DES, to build confidence in the production system and enable the value stream to meet the requirements of the increased volumes and complexity through making informed operational decisions. Second, to improve a key subassembly within the value stream identified as problematic with respect to labor content, cycle time, and ergonomics. A project has been identified to develop a new process to join two components with a tightly controlled radial bond.
Currently, the components are bonded, and the bond material must cure for several days. Upon curing, the joint contains excess bond material that must be removed for several reasons. The excess material is removed through a manual cutting process that is physically taxing on operators. After cutting, a cleanup process is initiated where an operator fills the void left from cutting with additional material; this additional bond material needs several additional days to cure. The new process utilizes an inflatable vessel that will apply pressure during the bond process to direct excess material away from the joint, eliminating the need for secondary processing in the joint, favorably impacting labor content, cycle time, and the ergonomics of operators. To speed validation and adoption, this project leveraged the 3D printing capabilities of the manufacturer.
Both the testing fixture and test articles were 3D printed in order to accelerate development and reduce risk associated with investment in the development process. Testing of the new process has indicated that the new method produces bonds of acceptable quality with markedly reduced labor content, resulting in a projected annual savings of $950k.
by Clinton Lee Proctor.
M.B.A.
S.M.
M.B.A. Massachusetts Institute of Technology, Sloan School of Management
S.M. Massachusetts Institute of Technology, Department of Mechanical Engineering

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Nattanmai, Ganesh Babu Goushik. « Assembly flow design and process data digitalization for Process Industries : Flow and Line balancing with Simulation for Paper and Pulp Instruments with digital Information management ». Thesis, KTH, Industriell produktion, 2020. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-286008.

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The ABB Lorentzen and Wettre in Kista produces Paper and Pulp Testing Instruments for Paper Mills worldwide. The unit has product range of over 140 instruments. In the production there is significantly longer throughput times compared to the demand takt in the assembly of instruments since they are working in a Fixed position layout. The problem with order control and production planning strategies have been focused on the company. The Project focuses on the assembly design with line and flow balancing of the Paper and pulp Instruments. It has been performed for 4 Instruments with various types of Assembly methodologies, layouts and determine feasible work content balancing. The second objective is the Lead Time analysis and Throughput time optimization for the above-mentioned Products and recommendation for reduction. And further aligning with the challenges within sourcing and net-working capital for the instruments. The third objective is in the Shop floor Information data analysis. The fourth objective is the digitalization of process information through work Instructions of process data used by Assembly and integrating vertically with the ERP system. Several assembly design strategies were evaluated as traditional U-shaped line, Mixed product lines, Two-sided assembly as well as the Rabbit chasing cell layout using simulation with input regarding assembly precedence, order flow and resource routing were studied. The strategies were evaluated based on the operator utilization, throughput, and lead times for the Instruments with the Line balancing. Furthermore, validating in flow simulation for the dynamic scenario of the product routing, scheduling, and resource allocation in the Assembly. This means that the assembly design was chosen as the strategy with the shortest lead time, throughput time for the products. The process data digitalization has been performed for one of the instruments as a pilot project and vertical integration has been proposed as an information model. The results from the assembly balancing shows that the proposed assembly strategies have influence in the assembly in terms of the operator utilization and the Product routing in ABBs manual assembly. The process data digitalization has been aligned closely with assembly design since the transformation from the fixed position layout to the Assembly cells or lines have significant influence in the product knowledge across the resources in the assembly. The Lead times can be reduced by 32% in average from 12 weeks to 8 weeks by implementing the proposals of the instruments that are evaluated in the production system. The conclusion of the research shows that it will be more beneficial to implement the methodologies and deploy them across the other instruments for a more effective and smarter production process.
ABB Lorentzen and Wettre i Kista tillverkar pappers- och massatestningsinstrument för pappersindustrin världen över. Enheten har ett produktsortiment med över 140 instrument. På grund av att monteringen av instrument utförs i en fixed position layout förekommer i nuläget lång genomloppstid jämförelse med den efterfrågade takten. Problemet med strategier för orderkontroll och produktionsplanering har fokuserats på företaget. Projektet fokuserar på monteringsupplägg med linje- och flödesbalansering för pappers- och massainstrumenten. Det ska utföras på fyra olika instrument med monteringsmetoder, layouter och sedan bestämma möjlig balansering av arbetsinnehåll. Det andra målet är analys av ledtider och Optimering av genomloppstid för ovannämnda produkter och rekommendation för reduktion, samt ytterligare anpassning till utmaningarna inom inköp och nettokapital för instrumenten. Det tredje målet innefattar informations- och dataflödesanalys för produktionen. Det fjärde målet är digitalisering av processinformation genom arbetsinstruktioner för data som används av montering och integreras vertikalt med ERP-systemet. Olika monteringsupplägg och strategier har utvärderats bland annat som traditionell U-shaped line, Mixed Product lines, Two-sided assembly och därefter the Rabbit chasing cell layout vid simulering med input data av monteringsprioritet, orderflöde och resursdistribution studerades. Analysen av utvärderingen baserades på operatörsuttnyttjande, genomloppstid och ledtider för instrumenten med lean balansering och bekräftar i flödesimuleringen för det dynamiska scenariot för planering av operationsföljd, schemaläggning och resursallokering i monteringen. Ledtiderna har optimerats med den nya strategin som valts som upplägg för monteringen. Digitaliseringen av Processdata har utförts på ett av instrumenten som ett pilotprojekt. Vertikal integration har föreslagits som en informationsmodell. Resultaten från monteringens balansering visar att de föreslagna monteringsstrategierna påverkar resultatet i monteringen vad gäller resurseffektivitet och produkt routing i ABBs manuella montering. Digitaliseringen av Processdata har anpassats nära till monteringsupplägg sedan omvandlingen från den Fixed position layout till monteringscellerna eller linjerna har betydande inflytande på produktkunskapen för resurserna i monteringen. Ledtiderna kan minskas med 32% i genomsnitt från 12 veckor till 8 veckor om man genomför de förslag som denna avhandling har påvisat av de instrument som utvärderats. Slutledningen av avhandlingen visar att det kommer att vara fördelaktigt att implementera utvärderingsmetoderna och gruppera dem över de andra instrumenten för ett mer effektivt och smartare produktion process.

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Gandhari, Revanth Kumar Reddy. « Obstetric Unit Capacity Optimization and Consolidation Analysis Using Simulation Modeling and Using Analytical Hierarchy Process ». University of Akron / OhioLINK, 2015. http://rave.ohiolink.edu/etdc/view?acc_num=akron1435590411.

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Oškrdal, Václav. « Využití principů, postupů a nástrojů procesního řízení při vedení projektů softwarového vývoje ». Doctoral thesis, Vysoká škola ekonomická v Praze, 2009. http://www.nusl.cz/ntk/nusl-142137.

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The main goal of this dissertation thesis is to design and verify a new concept of process management principles, procedures and tools application, utilizable in the software development project management field. Emphasis is placed on creating a general (i.e. generally usable) concept, derived from solid theoretical background and suitable for further expansion and modifications. The theoretical part of the thesis has two main chapters. In the "Process management" chapter, the individual derived principles (Effectiveness, Added value, Coherence, Portability, Adequate standardization, Measurability, Clarity, Integration, Accountability, Continuous improvement) and procedures (Initiation, Identification, Definition, Validation, Implementation, Revision) are described and interconnected into an integrated concept, usable for the introduction and development of process management in the organization, supported by appropriate ICT tools (mainly from four selected areas -- Modeling and Simulation, Performance measurement, Change management, Administration). In the "Project Management" chapter, the project management area is embedded in the broader context of a process-driven organization in line with modern models of strategic ICT governance and ICT services management. The main dimensions of project management as well as the process approach to project management, which helps to bridge the gap between unique/temporary projects and repeatable/stable processes, are described. Basis for the normative project processes design in the following part of the thesis is set by the evaluation of selected models of the project life cycle and project management methodologies. The practical part of this thesis is basically a verification of the concept, described in the theoretical chapters. Firstly, an original project management methodology, suitable for deriving process model of the subject area, is presented. On this basis -- and by using the previously described principles, procedures and process management tools -- the major artifacts of a reference project processes model are elaborated (such as Conceptual model of the subject area, List of events and natural processes, Process pyramid, Process model, Organization model, Indicators pyramid or RACI matrix of roles and processes/indicators /SLAs; setup of selected process model is also verified experimentally by simulations). Critical evaluation of the presented model is an important input for the final assessment of the thesis goals' achievement and proposal of further research fields.

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Regele, Oliver Brian. « Applied discrete event simulation for root cause analysis and evaluation of corrective process change Efficacy within vaccine manufacturing ». Thesis, Massachusetts Institute of Technology, 2020. https://hdl.handle.net/1721.1/126896.

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Thesis: M.B.A., Massachusetts Institute of Technology, Sloan School of Management, May, 2020
Thesis: S.M., Massachusetts Institute of Technology, Department of Electrical Engineering and Computer Science, May, 2020
Cataloged from the official PDF of thesis.
Includes bibliographical references (pages 137-141).
Digital Transformation of the Biopharmaceutical industry is enabling improved operations through smart manufacturing. One area of interest is the application of advanced data analytics techniques to supplement traditional workflows. The focus of this research was developing a process simulation model to address a defect observed at a manufacturing line at the Sanofi Pasteur Lyon site. This defect entailed a series of Out-of-Trend batches with abnormally low content of a certain attribute, at the end of a two-year process with complex product batch genealogy, which complicated the use of a traditional approaches to Root Cause Analysis. This study performed a statistical analysis of the defect batch attribute content through production stages to determine which contained a Root Cause. Once this analysis identified the Valence Assembly process as a stage of origin, a Discrete Event Simulator for this process was developed based on historical process data and specifications. This simulator was able to model the current process and replicate the defect in-silico. The simulator identified a specific Root Cause in the batch testing protocol as well as the expected incidence rate of the defect over future campaigns. Finally, the simulator evaluated the efficacy of two potential Corrective Process Changes. This work functions as a practical exploration of integrating novel data analysis and simulation techniques into traditional vaccine manufacturing activities.
by Oliver Brian Regele.
M.B.A.
S.M.
M.B.A. Massachusetts Institute of Technology, Sloan School of Management
S.M. Massachusetts Institute of Technology, Department of Electrical Engineering and Computer Science

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Rosenberg, Zuzana [Verfasser], Helmut [Akademischer Betreuer] [Gutachter] Krcmar, Michael [Gutachter] Schermann et Martin [Gutachter] Leucker. « Simulation Approach for Managing and Analyzing Dynamic Complexities in Business Process Change Projects / Zuzana Rosenberg ; Gutachter : Helmut Krcmar, Michael Schermann, Martin Leucker ; Betreuer : Helmut Krcmar ». München : Universitätsbibliothek der TU München, 2016. http://d-nb.info/1123729212/34.

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Hui, Maggie Ting Ting. « Risk management by trainee translators : a study of translation procedures and justifications in peer-group interaction ». Doctoral thesis, Universitat Rovira i Virgili, 2012. http://hdl.handle.net/10803/83497.

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The thesis deals with the way student groups translate when simulating interactions between translators and clients, using risk management concepts as tools for describing their decisions. The research aims are: 1) to explore how the use of peer-group interaction in a simulated setting affects students’ ways of managing risk while translating, and 2) to study whether translators have any identifiable pattern of behavior of risk management and effort distribution. A two-cycle experiment involving two roles, the translator and the simulated client, was carried out with a class of translation students to test the effects of the main variable of peer-group interaction. Performance data were collected with screen recordings and think-aloud protocols. Additional data are collected through pre-and-post-experiment questionnaires and interviews with student subjects. The research analyzes of the translators’ rendition processes, codes the problems they face, observe the translation procedures they consider and finally adopt, and looks into the justifications for their procedures, in order to interpret their risk management.
La presente investigación analiza cómo los estudiantes de traducción gestionan el riesgo mientras traducen en un entorno simulado en el que se representa la relación traductor-cliente. Los objetivos de la investigación son: 1) analizar cómo la interacción de grupo de pares en un entorno simulado altera la forma en que los estudiantes gestionan el riesgo durante la traducción, y 2) averiguar si los traductores individuales tienen un patrón de comportamiento identificable en lo que respecta a la gestión de riesgo y a la distribución del esfuerzo. Se realizó un experimento de dos ciclos que incluyó dos roles (el traductor y el cliente simulado) con un grupo de estudiantes de traducción para evaluar los efectos de la interacción en un grupo de pares. Se recolectaron datos adicionales por medio de cuestionarios previos y posteriores al experimento, así como también por medio de entrevistas con los sujetos. Con el fin de interpretar su gestión del riesgo, la investigación analiza los procesos de traducción de los traductores, clasifica los problemas que enfrentaron, considera los procedimientos de traducción que tuvieron en cuenta y los que, finalmente, decidieron usar, y busca la razón por la que usaron dichos procedimientos.

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Ballam, Gamal Abdel Hussein. « An investigation into the methodologies of value-at -risk and a simulation process of a portfolio of financial instruments ». University of the Western Cape, 2004. http://hdl.handle.net/11394/7774.

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>Magister Scientiae - MSc
Financial companies such as investment and commercial banks as well as insurance companies, mutual and pension funds hold assets in the form of financial instruments in portfolios. Nowadays, financial instruments have proliferated so much that there are so many forms of them namely: derivatives, common stock, corporate and government bonds, foreign exchange and contracts. With so many financial instruments, companies can have very large and diversified portfolios for which they must quantify the risk. With high profile calamities that have rocked the financial world lately, the need for better risk management has never been so in demand as before. Value-at-Risk (VaR) is the latest addition in the investor's toolkit as far as measurements of risk is concerned. This new measure of risk complements well the existing risk measures that exist.Unfortunately, VaR is not unanimous and it has attracted a lot of critics over the years. This research thesis is threefold: to introduce the reader to the VaR concept; to discuss the different methods that exist to calculate VaR; and, finally, to simulate the VaR of a portfolio of government bonds. The first part of this research is to introduce the reader to the general idea of risk forms and its management, the role that the existing risk measures have played so far and the coming up of the new technique, which is VaR. The pros and cons that accompany a new technique are discussed as well as the history of VaR. The second part is about the different methods that exist to compute the VaR of a portfolio. Usually, VaR methodologies fall into three categories namely: Parametric; Historical; and Monte Carlo. In this research, the advantages and disadvantages of these three methods are discussed together with a step-wise method on how to proceed to calculate the VaR of a portfolio using any of the three methods. The practical side of this thesis deals about the VaR simulation of a portfolio of financial instruments. The chosen financial instruments are four South African government bonds with different characteristics. VaR for this particular portfolio will then be simulated by the three main methods. Eleven different simulations are run and they are compared against a Control Simulation (Benchmark Portfolio) to see how factors influencing VaR measure cope under different conditions. The main idea here was to check how VaR measures can change under different portfolio characteristics and to interpret these changes. Moreover, the VaR estimates under the three different methods will be compared

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Zoll, Brian M. « Evaluating the E-consult Process for Diabetes Care Delivery at an Outpatient Care Clinic ». Wright State University / OhioLINK, 2013. http://rave.ohiolink.edu/etdc/view?acc_num=wright1369051267.

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Guzman, Pamela, Franklin Montalvo, Edgardo Carvallo et Carlos Raymundo. « Implementation of a process management model and inventory control to increase the level of service in the after-sales area of industrial equipment ». Latin American and Caribbean Consortium of Engineering Institutions, 2019. http://hdl.handle.net/10757/656260.

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Currently, many industrial companies generate many losses in their after sales this is generated to an error in the control of inventories and in turn in a mishandling of their assets through their processes, therefore the present research proposes a management model of processes and control of inventories in order to reduce customer losses due to the large number of existing complaints and thus increase sales. Therefore, the process management model, which will contribute to the standardization, optimization and control of its critical processes, and for which indicators, procedures and policies will be proposed for each stage of the process in order to measure its efficiency and effectiveness for correct decision making. With respect to the control of inventories, it is proposed to make a segmentation of the products, which allows the identification of the most important products for the company, to then design a demand forecast model for families of products that will later be individualized considering their factors initial and finally using an inventory management model will obtain the optimal quantity of spare parts order to use in the technical service of the equipment reducing the annual costs related to the inventory.

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Shih, Yung Chin. « Simulação do processo de retirada de itens em CDP : um estudo de caso em empresa do ramo automotivo ». Universidade de São Paulo, 2005. http://www.teses.usp.br/teses/disponiveis/18/18135/tde-30112005-103752/.

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Este trabalho cria um modelo, em simulação a eventos discretos, utilizando o software ARENA 5.0, do centro de distribuição de peças de uma empresa do ramo automotivo, para geração de informações relacionadas ao deslocamento dos funcionários nos corredores. Existem diversas variáveis que estão diretamente relacionadas à movimentação no processo de retirada de itens, tais como capacidade e velocidade do transportador manual, influência do peso dos itens na coleta, dentre outras, que dificultam o processo de tomada de decisão. As técnicas propostas na bibliografia apresentam dificuldades em fornecer soluções já que não são capazes de trabalhar simultaneamente com estas variáveis, apresentando, assim, resultados discrepantes com a realidade. A simulação permite lidar com tais variáveis e fornecer resultados que servirão de suporte aos decisores para a tomada de decisão e assim gerenciar melhor os funcionários para completar a coleta de itens dos pedidos sem atrasos
This work builds a model, by the discrete event simulation, using the software ARENA 5.0, of a parts distribution centre of an automotive company, to generate information related to employees routing in aisles. There are several variables related to the movement in the retrieving process, such as capacity and velocity of the manual trolley, influence of the mass of items in the collecting process, among others, which make the decision process difficult. The techniques found in the literature demonstrate certain difficulties in providing solutions because they are not capable of dealing with those variables simultaneously, presenting, consequently, discrepancy results to the reality. The simulation permits to deal with those variables simultaneously and proving results to support managers in decisions and, therefore, to improve employees management in order to finalize the collecting of items without delay

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Klann, Dirk. « The Role of Information Technology in the Airport Business : A Retail-Weighted Resource Management Approach for Capacity-Constrained Airports ». Thesis, Cranfield University, 2009. http://hdl.handle.net/1826/4474.

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Much research has been undertaken to gain insight into business alignment of IT. This alignment basically aims to improve a firm’s performance by an improved harmonization of the business function and the IT function within a firm. The thesis discusses previous approaches and constructs an overall framework, which a potential approach needs to fit in. Being in a highly regulated industry, for airports there is little space left to increase revenues. However, the retailing business has proven to be an area that may contribute towards higher income for airport operators. Consequently, airport management should focus on supporting this business segment. Nevertheless, it needs to be taken into account that smooth airport operations are a precondition for successful retailing business at an airport. Applying the concept of information intensity, the processes of gate allocation and airport retailing have been determined to appraise the potential that may be realized upon (improved) synchronization of the two. It has been found that the lever is largest in the planning phase (i.e. prior to operations), and thus support by means of information technology (for information distribution and improved planning) may help to enable an improved overall retail performance. In order to determine potential variables, which might influence the output, a process decomposition has been conducted along with the development of an appropriate information model. The derived research model has been tested in different scenarios. For this purpose an adequate gate allocation algorithm has been developed and implemented in a purposewritten piece of software. To calibrate the model, actual data (several hundred thousand data items from Frankfurt Airport) from two flight plan seasons has been used. Key findings: The results show that under the conditions described it seems feasible to increase retail sales in the magnitude of 9% to 21%. The most influential factors (besides the constraining rule set and a retail area’s specific performance) proved to be a flight’s minimum and maximum time at a gate as well as its buffer time at gate. However, as some of the preconditions may not be accepted by airport management or national regulators, the results may be taken as an indication for cost incurred, in case the suggested approach is not considered. The transferability to other airport business models and limitations of the research approach are discussed at the end along with suggestions for future areas of research.

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Lolková, Stanislava. « Návrh zlepšení výrobních procesů koupelnového otopného tělesa pomocí simulace ». Master's thesis, Vysoké učení technické v Brně. Fakulta podnikatelská, 2015. http://www.nusl.cz/ntk/nusl-225079.

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This thesis analyzes the current situation in company Očenášek. On the basis of the process maps, chronometrical results and computer simulations is compiled value stream mapping current status, which highlights the trouble spots of the process. The proposed solution is drawn up a new value stream mapping, which serves as the basis for evaluation of the proposed solution.

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Tashtoush, Tariq Husni. « Using lean principles and simulation to enhance the effectiveness of a failure analysis laboratory in a manufacturing environment ». Diss., Online access via UMI:, 2009.

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Thesis (M.S.)--State University of New York at Binghamton, Thomas J. Watson School of Engineering and Applied Science, Department of Systems Science and Industrial Engineering, 2009.
Includes bibliographical references.

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Chin, Joanne. « Using the Delta-Model for End-Stage Liver Disease to Improve the Decision-making Process for the Donor Liver System ». ScholarWorks, 2015. https://scholarworks.waldenu.edu/dissertations/1436.

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The purpose of this experimental research was to determine whether using delta-MELD as a criterion for the liver transplant patient selection process could improve the U.S. liver allocation system. This research closed a gap in current literature on the utility of delta-MELD for liver transplant patient selection. The frameworks of systems theory, the analytic hierarchy process, and the Kalman filter contributed to the development of 2 simulation models of the liver allocation system: one that used delta-MELD and one that did not use delta-MELD. The research question examined whether using delta-MELD could improve the liver allocation system by reducing the number of patients dropping off the wait list and lowering the average MELD score. Statistical t tests of 2 independent scenarios (allocation with and without delta-MELD), each with 70 runs of 180 simulated days on the liver allocation wait list, did not indicate a significant improvement to the liver allocation system by using delta-MELD for liver allocation. However, observations made from the simulation experiment, such as the median patient wait time being 11 months and delta-MELD being more variable at the end-stage of liver diseases, provided insights into how to improve the model of the liver allocation process. In addition, observations made from the status 1 patient subgroup (patients in ICU with about 7 days to live), which were excluded from this research, suggested including status 1 patients and expanding the simulation timespan from 180 to 360 days to better capture the delta-MELD variability from patients at the end-stage of liver disease. This research provides empirical evidence on the applicability of the delta-MELD criterion for non-status 1 patients, and yields recommendations to include status 1 patients in an improved simulation of the donor liver system while using delta-MELD as criterion.

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Franěk, Lukáš. « Flight Management System Model ». Master's thesis, Vysoké učení technické v Brně. Fakulta elektrotechniky a komunikačních technologií, 2011. http://www.nusl.cz/ntk/nusl-219075.

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Diplomová práce shrnuje nejdůležitější informace o letectví, jako například základní používané termíny, popis letových fází apod. V této práci je popsán flight management system, jeho funkce a schopnosti vytvořit cenově příznivý a současně absolutně spolehlivý letový plán. V další části práce je nastíněna důležitost předpovědi počasí pro bezpečnou a současně cenově příznivou leteckou dopravu. Tato práce je vytvořena v programu Matlab a všechny bloky jsou naprogramovány jako m-funkce. Důležité části kódu jsou z důvodu názornosti zobrazeny jako vývojové diagramy. Praktická část práce je rozdělena do několika podkapitol, kde každá podkapitola popisuje jeden blok z blokového schématu pro výpočet nejistoty odhadované doby příletu. Současně je zde vysvětlena funkce ostatních bloků pro plánování letu, předpověď počasí, kombinování větrů a výpočet odhadnuté doby příletu a její nejistoty.

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Janius, Camilla, et Sahel Mir. « Using discrete event simulation : Improving efficiency and eliminating nonvalue added work ». Thesis, Mälardalens högskola, Akademin för innovation, design och teknik, 2016. http://urn.kb.se/resolve?urn=urn:nbn:se:mdh:diva-35065.

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Process improvement is one of the challenging tasks within manufacturing companies. This study has been focused on analysing a packaging station by using a discrete event simulation tool. Packaging is an important part of the production and logistics process, but it is seldom considered when analysing non-value added activities. Discrete event simulation has been used in the analysis of non-value added activities in production systems, but noted by the low number of articles related to the usage of discrete event simulation within packaging, there exists a limited understanding of discrete event simulation use in this area. The authors divided the scope of the research into the following research questions, which are presented below: RQ1: How can discrete event simulation be used as a tool to identify time wastes and create efficiency in a packaging station? RQ2: What method is suitable when creating a simulation project? These questions were to be answered by performing a literature review and a case study in ABB AB Control Products Vasteras, mentioned as ABB in later in the thesis, where the packaging station were in need of improvements. The results from theoretical and empirical finding were analysed, they highlight the importance of packaging and its impact on logistics and supply chain management performance. By creating discrete event simulation models for both current and future stage, the authors were able to provide analysed improvements of the packaging station. The result of the models illustrated by implementing the improvements it could generate in less pressure on the operators as well as an approximated improvement of 125% more packed product. The improvements of the model involve a better material handling and a more optimized packaging station in order to create a more efficient workstation. The conclusion of the study is that the company should develop the product simultaneously as the production, were every activity and process should be included. They should also consider what impacts the development has on the entire supply chain. This could be a way to eliminate non-value activities from the start. Discrete event simulation is a tool that could be of help when visualizing the process and it allows the developers to see the impact of a change or improvement on the other processes.

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Eyjólfsson, Hrafn. « Simulation as a decision support tool for hospitals' surgery planning : A case study for process improvement at a major hospital in Sweden ». Thesis, Uppsala universitet, Industriell teknik, 2019. http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-395967.

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Healthcare systems, driven by increased demand due to growth in chronic diseases and population, suffer from lack of staffing and facility resources. Many major hospitals have long waiting lists and have subsequently pushed their production close to maximum capacity due to the high demand for services. The consequences are lack of overview of the operations and lack of coordination between healthcare staff, which leads to treatment delays. Surgery planning or scheduling is an important part of production planning in hospitals, which is considered highly complex due to high variability and many decisions variables that need to be considered. Those responsible for surgery planning are often considered to lack the right tools to support them in evaluating the many different decision factors. Simulation is a technology within the field of operations research which has been applied to aid with surgery planning problems and to look for process improvements. Many studies however use a simplified approach to the surgery planning, due to the complexities of the planning problem. Studies have further argued that surgery planning fails to consider downstream resources and the negative effects it has on utilization of those resources. This thesis is based on a case study at one of Sweden’s major hospitals and aims to explore how simulation could become a decision support to help with surgery planning and identifying what process improvements such a tool could be aimed at. The surgery planning decision making process is first analyzed using a hierarchical framework for hospitals’ production planning. The results were that the decision making process regarding patient flows needs to be improved by taking both a top-down and bottom-up strategy for better information flow and coordination. The study further concludes that improved coordination and information sharing are important factors to improve patient flow through the hospital, which could be supported by the usage of Discrete Event Simulation for decision making. The ideal decision support tool is however considered the simulation tool embedded with an online system to support bed management decisions which could increase patient throughput. Such a tool could help to decrease the demand for the hospital’s beds by discharging patients quicker. In addition, it could support the bottom-up strategy for coordination, while implementing a multi-method or hybrid simulation could further support the top-down part of the strategy.

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Grill, Tomas, et Håkan Östberg. « A Financial Optimization Approach to Quantitative Analysis of Long Term Government Debt Management in Sweden ». Thesis, Linköping University, Department of Mathematics, 2003. http://urn.kb.se/resolve?urn=urn:nbn:se:liu:diva-2223.

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The Swedish National Debt Office (SNDO) is the Swedish Government’s financial administration. It has several tasks and the main one is to manage the central government’s debt in a way that minimizes the cost with due regard to risk. The debt management problem is to choose currency composition and maturity profile - a problem made difficult because of the many stochastic factors involved.

The SNDO has created a simulation model to quantitatively analyze different aspects of this problem by evaluating a set of static strategies in a great number of simulated futures. This approach has a number of drawbacks, which might be handled by using a financial optimization approach based on Stochastic Programming.

The objective of this master’s thesis is thus to apply financial optimization on the Swedish government’s strategic debt management problem, using the SNDO’s simulation model to generate scenarios, and to evaluate this approach against a set of static strategies in fictitious future macroeconomic developments.

In this report we describe how the SNDO’s simulation model is used along with a clustering algorithm to form future scenarios, which are then used by an optimization model to find an optimal decision regarding the debt management problem.

Results of the evaluations show that our optimization approach is expected to have a lower average annual real cost, but with somewhat higher risk, than a set of static comparison strategies in a simulated future. These evaluation results are based on a risk preference set by ourselves, since the government has not expressed its risk preference quantitatively. We also conclude that financial optimization is applicable on the government debt management problem, although some work remains before the method can be incorporated into the strategic work of the SNDO.

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Mareth, Taciana. « Mapeamento de processos e simulação como procedimentos de apoio à gestão de custos : uma aplicação para o processo de registros e matrículas da universidade de Cruz Alta ». Universidade do Vale do Rio do Sinos, 2008. http://www.repositorio.jesuita.org.br/handle/UNISINOS/2830.

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Made available in DSpace on 2015-03-05T19:13:44Z (GMT). No. of bitstreams: 0 Previous issue date: 25
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O tema desta dissertação consiste em associar a gestão de custos com duas ferramentas de análise que são: mapeamento de processos e simulação. Neste sentido, o objetivo principal foi de verificar a contribuição do mapeamento de processos e da simulação como procedimentos de apoio à gestão de custos no processo de registros e matrículas da Universidade de Cruz Alta - UNICRUZ. Trata-se de um estudo aplicado e quantitativo, pois foram coletados dados, como por exemplo, taxa de atendimento e taxa de chegada, analisados estatisticamente e, posteriormente, foram construídos os modelos de simulação e dois cenários de cada modelo para a análise final. Ao final se comprova a contribuição do mapeamento de processos e da simulação como ferramenta de apoio à gestão de custos, na medida em que a metodologia utilizada contribuiu na melhoria da qualidade, no alinhamento dos processos e na gestão dos custos.
The theme of this dissertation consists of associating the costs management with two tools of analysis: processes mapping and simulation. In this sense, the main objective was to verify the contribution of the processes mapping and simulation as support procedures to the costs management on the registrations and enrollments of the Cruz Alta University – UNICRUZ. This was an applied and quantitative study once there was collection of data, such as service rate and students’ arrival rate, both analyzed under statistical procedures and later originated simulation models and two scenarios of each model for the final analysis. At the end of the study, it is proved the contribution of the process mapping and simulations as important support tools to the costs management, since the used methodology contributed in the improvement of the quality, in the alignment of the processes and in the costs management.

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Santorum, Gaibor Marco Oswaldo. « Iesa : une méthode ludique et participative pour la représentation et l'amélioration des processus métiers ». Thesis, Grenoble, 2011. http://www.theses.fr/2011GRENM054/document.

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Toute organisation doit aujourd'hui être capable de s'adapter de plus en plus vite aux évolutions stratégiques, organisationnelles et techniques. Pour cela, elle doit pouvoir identifier, modéliser, simuler, exécuter, optimiser et faire évoluer ses processus métier en fonction de ces changements. L'approche BPM (Business Process Management) propose des langages, des méthodes et des outils pour la modélisation, l'exécution et l'optimisation des processus. Mais l'étape de modélisation reste lourde à mettre en œuvre, couteuse, souvent effectuée par un expert analyste métier et donc peu consensuelle. Par opposition, la méthode ISEA est une approche participative dans laquelle les différents acteurs fonctionnels d'un processus métier conçoivent ensemble, de façon simple, ludique et rapide, une représentation des processus consensuelle et évolutive. Cette méthode est basée sur le cycle de vie traditionnel de gestion des processus métier, mais introduit 4 phases originales : l'identification, la simulation, l'évaluation et l'amélioration. Ces phases sont basées sur des outils de gestion de la qualité et utilisent un jeu de rôles (serious game) pour rendre la modélisation de processus plus attractive et collaborative. Le résultat est un modèle de processus simple et organisationnellement optimisé que nous transformons ensuite dans un modèle BPMN par une approche de type IDM
Nowadays, organizations have to be flexible enough to allow adjustments to new circumstances, users' requirements, respecting environmental constraints and technological evolution. Business process management (BPM) technologies provides the base that enables to adapt, optimize and evolve the business. However modeling can be hard and costly, often done by business analyst experts. In contrast, ISEA Method is a collaborative approach that lets functional actors of a process design together in a fun, fast and simple way a consensual and evolved process representation. ISEA Method is based on the traditional BPM life cycle, but introduces four original phases: Identification, Simulation, Evaluation, Amelioration These phases are supported by quality process improvement tools and use a role-playing game (serious game) in order to stimulate people and modeling in a collaborative way. The result is a “basic” and optimized process representation that we convert in a BPMN model by using the IDM approach

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Jayamaha, Ranee. « The monetary transmission mechanism in Sri Lanka 1977-1985 : a macro simulation approach to the modelling of the money supply process and the construction of an analytical framework for monetary management ». Thesis, University of Bradford, 1989. http://hdl.handle.net/10454/4341.

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The primary objective of this thesis is to analyse the relationship between money and the macro-economy in Sri Lanka between 1977 and 1985, in order to identify the paths through which monetary policy impulses are transmitted over this period. In doing so, - we also hope to highlight the use of macro-simulation as a tool for the analysis of the monetary transmission mechanism and to emphasise the importance of formulating monetary policy within an explicit monetary control framework. This is especially important in Sri Lanka since monetary policy has been a key instrument of demand management since 1977 and historically there has been a noticeable absence of an explicit monetary control framework. Empirical research on the monetary transmission mechanism has been very limited as far as developing countries are concerned. An exception here is the SEACEN (1981) study which simulates the effects of monetary shocks on a number of South East Asian countries, including Sri Lanka, using a flexible monetarist approach. Our research is based upon a revision of the specification of this model for Sri Lanka and a more comprehensive disaggregation of the monetary transmission channels. Our empirical model produces statistical results which are generally acceptable and conform to a Priori expectations. This model is then simulated dynamically, both, to validate the equations in the context of a complete model and to quantify the impact of alternative policy scenarios relating to the monetary transmission mechanism in Sri Lanka. We believe that our results will help to shed light on the nature of the monetary transmission mechanism in developing countries as well as provide the basis for an on-going analysis of monetary management in Sri Lanka.

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