To see the other types of publications on this topic, follow the link: Production system design.

Dissertations / Theses on the topic 'Production system design'

Create a spot-on reference in APA, MLA, Chicago, Harvard, and other styles

Select a source type:

Consult the top 50 dissertations / theses for your research on the topic 'Production system design.'

Next to every source in the list of references, there is an 'Add to bibliography' button. Press on it, and we will generate automatically the bibliographic reference to the chosen work in the citation style you need: APA, MLA, Harvard, Chicago, Vancouver, etc.

You can also download the full text of the academic publication as pdf and read online its abstract whenever available in the metadata.

Browse dissertations / theses on a wide variety of disciplines and organise your bibliography correctly.

1

Ali, Mohammad. "Production system design methodology with emphasis on sub-system and equipment design." Thesis, Massachusetts Institute of Technology, 1997. http://hdl.handle.net/1721.1/46085.

Full text
APA, Harvard, Vancouver, ISO, and other styles
2

Rösiö, Carin. "Supporting the design of reconfigurable production systems." Doctoral thesis, Tekniska Högskolan, Högskolan i Jönköping, JTH. Forskningsmiljö Industriell produktion, 2012. http://urn.kb.se/resolve?urn=urn:nbn:se:hj:diva-20306.

Full text
Abstract:
To compete, manufacturing companies need production systems that quickly can respond to changes. To handle change drivers such as volume variations or new product variants, reconfigurability is advocated as a competitive means. This implies an ability to add, remove, and/or rearrange the structure of the production system to be ready for future changes. Still, it is not clear how the production system design process can capture and support the de-sign of reconfigurable production systems. Therefore, the objective of this thesis is to increase the knowledge of how to support the design of reconfig-urable production systems. Reconfigurability could be defined by a number of reconfigurability char-acteristics including convertibility, scalability, automatibility, mobility, modularity, integrability, and diagnosability. In eight case studies, reconfigu-rability characteristics in production system design were studied in order to investigate reconfigurability needs, knowledge, and practice in manufactur-ing companies. In three of the case studies reconfigurable production sys-tems were studied to identify the links between change drivers and reconfig-urability characteristics. In the remaining five case studies, reconfigurability in the production system design processes was addressed in terms of needs, prerequisites, and consideration. Based on the literature review and the case studies, support for reconfigu-rable production system design is suggested including two parts. The first part comprises support for analyzing the need for reconfigurability. Based on relevant change drivers the need for reconfigurability must be identified to enable selection of right type and degree of reconfigurability for each specif-ic case of application. A comprehensive view of the reconfigurability charac-teristics is presented and links between change drivers and reconfigurability characteristics are described. The characteristics are divided into critical characteristics, that lead to a capacity or functionality change of the produc-tion system, and supporting characteristics, that reduce system reconfigura-tion time but do not necessarily lead to a modification of functionality or capacity of the production system. The second part provides support in how to consider reconfigurability in the production system design process. A holistic perspective is crucial to design reconfigurable production systems and therefore constituent parts of a production system are described. Accord-ing to their character physical, logical, and human reconfiguration must be considered through the whole production system design process.
APA, Harvard, Vancouver, ISO, and other styles
3

Schanzenberger, Anja. "System design for periodic data production management." Thesis, Middlesex University, 2006. http://eprints.mdx.ac.uk/10697/.

Full text
Abstract:
This research project introduces a new type of information system, the periodic data production management system, and proposes several innovative system design concepts for this application area. Periodic data production systems are common in the information industry for the production of information. These systems process large quantities of data in order to produce statistical reports in predefined intervals. The workflow of such a system is typically distributed world-wide and consists of several semi-computerized production steps which transform data packages. For example, market research companies apply these systems in order to sell marketing information over specified timelines. production of information. These systems process large quantities of data in order to produce statistical reports in predefined intervals. The workflow of such a system is typically distributed world-wide and consists of several semi-computerized production steps which transform data packages. For example, market research companies apply these systems in order to sell marketing information over specified timelines. There has been identified a lack of concepts for IT-aided management in this area. This thesis clearly defines the complex requirements of periodic data production management systems. It is shown that these systems can be defines as IT-support for planning, monitoring and controlling periodic data production processes. Their significant advantages are that information industry will be enabled to increase production performance, and to ease (and speed up) the identification of the production progress as well as the achievable optimisation potential in order to control rationalisation goals. In addition, this thesis provides solutions for he generic problem how to introduce such a management system on top of an unchangeable periodic data production system. Two promising system designs for periodic data production management are derived, analysed and compared in order to gain knowledge about appropriate concepts and this application area. Production planning systems are the metaphor models used for the so-called closely coupled approach. The metaphor model for the loosely coupled approach is project management. The latter approach is prototyped as an application in the market research industry and used as case study. Evaluation results are real-world experiences which demonstrate the extraordinary efficiency of systems based on the loosely coupled approach. Special is a scenario-based evaluation that accurately demonstrates the many improvements achievable with this approach. Main results are that production planning and process quality can vitally be improved. Finally, among other propositions, it is suggested to concentrate future work on the development of product lines for periodic data production management systems in order to increase their reuse.
APA, Harvard, Vancouver, ISO, and other styles
4

Bruch, Jessica. "Management of Design Information in the Production System Design Process." Doctoral thesis, Mälardalens högskola, Akademin för innovation, design och teknik, 2012. http://urn.kb.se/resolve?urn=urn:nbn:se:mdh:diva-14138.

Full text
Abstract:
For manufacturing companies active on the global market, high-performance production systems that contribute to the growth and competitiveness of the company are essential. Among a wide range of industries it is increasingly acknowledged that superior production system capabilities are crucial for competitive success. However, the process of designing the production system has received little attention, ignoring its potential for gaining a competitive edge. Designing production systems in an effective and efficient manner is advantageous as it supports the possibility to achieve the best possible production system in a shorter time. One way to facilitate the design of the production system is an effective management of design information. Without managing design information effectively in the production system design process the consequences may be devastating including delays, difficulties in production ramp-up, costly rework, and productivity losses. The objective of the research presented in this thesis is to develop knowledge that will contribute to an effective management of design information when designing production systems. The empirical data collection rests on a multiple-case study method and a survey in which the primary data derive from two industrialization projects at a supplier in the automotive industry. Each industrialization project involved the design of a new production system. The findings revealed ten categories of design information to be used throughout the process of designing production systems. The identified design information categories are grouped in the following way: (1) design information that minimizes the risk of sub-optimization; (2) design information that ensures an alignment with the requirements placed by the external context; (3) design information that ensures an alignment with the requirements placed by the internal context, and (4) design information that facilitates advancements in the design work. In order to improve the management of the broad variety of design information required, a framework is developed. The framework confirms the necessity to consider the management of design information as a multidimensional construct consisting of the acquiring, sharing, and using of information. Further, the framework is based on six characteristics that influence the management of design information. These characteristics are information type, source of information, communication medium, formalization, information quality, and pragmatic information. Supported by the findings, guidelines for the management of design information are outlined to facilitate an effective and efficient design of the production system and thus contribute to better production systems. The guidelines are of value to those responsible for or involved in the design of production systems.
APA, Harvard, Vancouver, ISO, and other styles
5

Leu, Yow-yuh. "Cellular manufacturing: applicability and system design." Diss., Virginia Tech, 1991. http://hdl.handle.net/10919/39922.

Full text
Abstract:
As competition has intensified, many American manufacturers have sought alternatives to rejuvenate their production systems. Cellular manufacturing systems have received considerable interest from both academics and practitioners. This research examines three major issues in cellular manufacturing that have not been adequately addressed: applicability, structural design, and operational design. Applicability, in this study, is concerned with discerning the circumstances in which cellular manufacturing is the system of choice. The methodology employed is simulation and two experimental studies are conducted. The objective of Experiment I, a 2 x 3 x 3 factorial design, is to investigate the role of setup time and move time on system performance and to gain insight into why and how one layout could outperform another. The results of Experiment I suggest that move time is a significant factor for job shops and that workload variation needs to be reduced if the performance of cellular manufacturing is to be improved. Experiment II evaluates the impact of setup time reduction and operational standardization on the performance of cellular manufacturing. The results of Experiment II suggest that cellular manufacturing is preferred if the following conditions exist: (1) well balanced workload, (2) standardized products, (3) standardized operations, and (4) setup times independent from processing times.
Ph. D.
APA, Harvard, Vancouver, ISO, and other styles
6

Karlsson, Kenneth. "Systematic design of competitive production systems : towards a decision model for manufacturing system flow design /." Stockholm, 2004. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-1757.

Full text
APA, Harvard, Vancouver, ISO, and other styles
7

Norman, Garrett Todd. "Pull Manufacturing System Design for Rough Mill Systems: A Case Study." Thesis, Virginia Tech, 2008. http://hdl.handle.net/10919/42732.

Full text
Abstract:
Domestic secondary wood products manufacturers are losing their competitive edge in the global economy. Foreign competition is steadily gaining market-share due to decreased labor costs. While domestic operations can not compete with labor costs available to foreign manufacturers, they may be able to remain competitive through product lead time reduction and on-time delivery to the final customer. Pull based manufacturing is one technique to reduce lead time increase on-time delivery. Value stream mapping was used in this project to evaluate a furniture rough mill located in Virginia to assess the current state, as well as develop 2 future state value streams. The current state evaluation found the system to be yield driven and production was based on a forecast. The lead time for internal nightstand components in the current state was found to be 15.1 hours. Using pull production and supermarket methodology in proposed future states, it was found that the lead time could be reduced to 7.5 hours. Lead times could be reduced by eliminating yield increasing non-value added activities currently in place which not only increase lead time, but also manufacturing waste as defined by lean manufacturing concepts. A cost analysis found that the labor and overhead costs associated with yield increasing activities in the current state outweighed the costs of a decreased yield measurement in the future state. While this project was limited to one rough mill and one product family of a lesser valued wood species it represents what is possible for assisting secondary manufacturers to remain competitive. The once successful traditional yield driven rough mill does not guarantee internal customer satisfaction and in this project is not cost effective. Future research should focus on the implications of the furniture rough mill's inability to meet downstream demand to internal customers.
Master of Science
APA, Harvard, Vancouver, ISO, and other styles
8

Arifeen, N. "Process design and optimization of bio-ethanol production system." Thesis, University of Manchester, 2007. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.509174.

Full text
APA, Harvard, Vancouver, ISO, and other styles
9

Kuest, Kristina Michelle 1973. "The development of the production system design decomposition framework." Thesis, Massachusetts Institute of Technology, 1999. http://hdl.handle.net/1721.1/80197.

Full text
APA, Harvard, Vancouver, ISO, and other styles
10

Shuster, Samuel Benjamin Fertel. "Design and Evaluation of a Tactile Texture Production System." ScholarWorks @ UVM, 2018. https://scholarworks.uvm.edu/graddis/910.

Full text
Abstract:
Students who are blind or have low-vision (BLV) do not have the same access to graphical curricular content as their sighted peers. This significantly affects their education, particularly in STEM subjects. Introduction of interactive tactile graphics is one of the only ways for BLV students to access graphical content, and is uniquely suited to teaching drawing skills. The goal of this engineering design project was to expand the capacity of printing technology that produces interactive raised-line graphics by creating a system to print textures that meet specific criteria for usefulness. The addition of textures to tactile graphics is essential for the graphics to be unambiguous and to communicate information about spaces and regions. Maps, geometric figures and graphs are prime examples. The system developed in this project for printing tactile textures was designed as an enhancement of an existing beta prototype printer for interactive tactile graphics co-developed at UVM and E.A.S.Y. LLC. Preliminary experimentation indicated that varying the size of the drawing stylus tip would afford the greatest range of printed textures. Based on this finding, the Texture Creation System (TCS) was designed with this new functionality. This thesis describes the process by which the categories of possible designs were refined and how the TCS - based on a system of interchangeable self-locking tapered tips - was designed, built, revised, and tested. We developed a set of six tactile textures (the Texture Set) as examples of the capabilities of the TCS. We then designed and performed an experiment in which six BLV subjects assessed the textures based on their Distinctness, Recognizability, and Variability in Degree. In all tests that mimic real-world use, the Texture Set was found to be successful in at least 75% of trials. The design also successfully addressed constraints for speed of operation, system cost, noise volume, and compatibility with the beta printer. The design also met standards for reliability and mechanical strength. Future engineering will be required to add sensors to monitor mechanical operation. Also, larger-scale user testing of the Texture Set (and other textures) will be needed for statistical significance and to provide insight into what objective properties of the textures elicit certain subjective responses, i.e. why certain textures meet design criteria better than others.
APA, Harvard, Vancouver, ISO, and other styles
11

Leonard, Henry Taylor. "Time-Based Manufacturing System Design for Softwood Lumber Production." Thesis, Virginia Tech, 2005. http://hdl.handle.net/10919/35860.

Full text
Abstract:
Manufacturing industries in the United States continue to experience increasing pressure from foreign competition. Through decreasing product lead time, U.S. manufacturers can achieve a sustainable competitive advantage. Southern yellow pine manufacturing is an example of an industry that can benefit from product lead time reduction. This project involved a case study of a southern yellow pine lumber manufacturer. Value stream mapping was used to evaluate the current lead time for the lumber manufacturer as well as design future state systems. Current state evaluation discovered an average lead time of 35.3 days according to six months of inventory data. Four future state systems were developed according to current demand and had lead times ranging from 10.8 to 14.9 days. Lead time reduction was achieved through more closely synchronizing and planing operations with sawmill output. To illustrate the impact of lead time on financial performance, the amount of capital invested in inventory was evaluated for the current state value stream as well as the future state value streams. All of the future state capital inventory requirements were less than 50 percent of the current state capital inventory requirement. Implementation of future state value streams would allow the manufacturer to benefit from having more available capital. This research project also investigated the use of pull production at the softwood lumber manufacturing operation. Effective implementation of pull production would require improving headrig optimization programs, presorting material by grade before drying, little or no drying degrade, and reducing both drying and cooling time. Due to the technological requirements of pull production in lumber manufacturing, the system was not currently feasible for the lumber manufacturer. Future research efforts should be directed towards creating the technology necessary to economically implement pull production in the softwood sawmill industry.
Master of Science
APA, Harvard, Vancouver, ISO, and other styles
12

Flores-García, Erik. "Supporting Production System Design Decisions through Discrete Event Simulation." Licentiate thesis, Mälardalens högskola, Inbyggda system, 2017. http://urn.kb.se/resolve?urn=urn:nbn:se:mdh:diva-34800.

Full text
Abstract:
Manufacturing companies are increasingly required to deal with and introduce significant changes in their production systems to gain a competitive advantage. The production system design process is widely considered a means of introducing such changes, and decisions made during design are viewed as critical to its characterization and performance. However, this presents a problem because committing to decisions that involve significant changes implies not only dealing with requirements, products, challenges, or expectations that are different from what currently exists, but also addressing uncertainties regarding both the information necessary for committing to a production system design decision and the actual benefits that can be achieved as a result of these changes. One way to support the production system design decisions in this context is through the use of Discrete Event Simulation (DES). However, understanding of DES use when supporting production system design decisions in this domain remains limited.     Therefore, the objective of this thesis is to explore the use of DES in support of production system design decisions when significant changes are introduced. Data are collected through a multiple case study method and DES from three real-time production system design projects at one manufacturing company. All production system design projects studied involved the introduction of significant production system changes for which limited experience existed. The cases and results are presented in three appended publications. The findings establish the purpose of DES use when supporting production system design decisions in this context. To this end three groups of DES model objectives are identified: communicating decisions and visualizing results, evaluating a production system design concept focused on operational performance, and experimenting with what-if scenarios while predicting production system outputs. The points of DES use when supporting production system design decisions are specified in relation to current theoretical understanding of a production system design process. Then, challenges and contributions of DES use supporting production system design decisions are identified. A framework is presented to facilitate the use of DES supporting production system design decisions when significant changes are introduced. The framework is based on the identification of high-level strategic objectives and relates these to production system design decisions. It defines DES use in support of these decisions and establishes milestones for DES use during production system design. Based on an analysis of the challenges and contributions of DES use, the framework helps formulate the purpose of DES use to achieve production system design decision support.
INNOFACTURE - innovative manufacturing development
APA, Harvard, Vancouver, ISO, and other styles
13

Wade, John Leconte. "The development of a design for manufacture expert system." Thesis, Georgia Institute of Technology, 1989. http://hdl.handle.net/1853/17600.

Full text
APA, Harvard, Vancouver, ISO, and other styles
14

Wong, Chi T. "Expert system design for cold form sections." Thesis, Aston University, 1991. http://publications.aston.ac.uk/11915/.

Full text
Abstract:
The concept of an Expert System (ES) has been acknowledged as a very useful tool, but few studies have been carried out in its application to the design of cold rolled sections. This study involves primarily the use of an ES as a tool to improve the design process and to capture the draughtsman's knowledge. Its main purpose is to reduce substantially the time taken to produce a section drawing, thereby facilitating a speedy feedback to the customer. In order to communicate with a draughtsman, it is necessary to use sketches, symbolic representations and numerical data. This increases the complexity of programming an ES, as it is necessary to use a combination of languages so that decisions, calculations, graphical drawings and control of the system can be effected. A production system approach is used and a further step has been taken by introducing an Activator which is an autoexecute operation set up by the ES to operate an external program automatically. To speed up the absorption of new knowledge into the knowledge base, a new Learning System has been constructed. In addition to developing the ES, other software has been written to assist the design process. The section properties software has been introduced to improve the speed and consistency of calculating the section properties. A method of selecting or comparing the most appropriate section for a given specification is also implemented. Simple loading facilities have been introduced to guide the designer as to the loading capacity of the section. This research has concluded that the application of an ES is beneficial and with the activator approach, automated designing can be achieved. On average a complex drawing can be displayed on the screen in about 100 seconds, where over 95% of the initial section design time for repetitive or similar profile can be saved.
APA, Harvard, Vancouver, ISO, and other styles
15

NIU, Zhanwen. "Lean Design and Management for Manufactoring." Economic Research Center, Graduate school of Economics, Nagoya University, 2009. http://hdl.handle.net/2237/11909.

Full text
APA, Harvard, Vancouver, ISO, and other styles
16

Båtelsson, Niklas, and Simon Alfredsson. "Assembly system design - : Case study of a mixed model production." Thesis, KTH, Industriell produktion, 2012. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-103276.

Full text
Abstract:
The report, which is a part of the course "MG202X Examensarbete", has been written for the institution Industrial Production at the Royal Institute of Technology (KTH) with guidance from Antonio Maffei. The work has been focused on creating an assembly system at a production facility for Schneider Electric in Nyköping. The Authors has divided the report into a literature review containing Lean production and assembly systems, an analysis of the initial state and a solution. The literature review presents three separate parts which creates the framework of our analysis. The first part regards assembly system and describes different types of design alternatives and which losses that can be found in an assembly system. Furthermore the second part contains Lean production where selected parts of the philosophy are described. The last part of the literature review treats the design of the workstation with regards to ergonomics and part presentation. The analysis at Schneider Electric has been conducted during a three month period and has included time studies, observations and interviews. To analyze the initial state a model for estimating assembly times and workload were needed. An in depth understanding of the initial state was the foundation to be able to create an adapted and accepted assembly system. The work resulted in two suggested assembly systems. One system contains only one workstation and was to be used for a simple assembly process. The second system is to be used for more complex products and has a higher capacity as it contains three workstations. As the assembly system contains three separate workstations it means that the assembly process has been divided which were done through a consideration between logical split and balancing of the system. Both systems used a continuous supply system for components.
Rapporten, som är en del av kursen "MG202X Examensarbete", har skrivits för institutionen Industriell Produktion på KTH under handledning av Antonio Maffei. Arbetet har inriktats på att utveckla ett monteringssystem hos Schneider Electrics produktionsanläggning i Nyköping. Författarna har delat upp rapporten mellan en litteraturstudie kring Lean produktion och monteringssystem, en analys av den aktuella situationen och en presentation av lösning. Litteraturstudien presenterar tre separata delar som bildar ramverket till vår analys. Den första delen är monteringssystem vilket beskriver olika typer av designalternativ samt vilka förluster som finns i ett monteringssystem. Vidare består den andra delen av Lean produktion där utvalda delar av filosofin har beskrivits. Den sista delen av studien behandlar utformandet av den enskilda arbetssituationen med hänsyn till ergonomi och komponentpresentation. Analysen av situationen hos Schneider Electric har gjorts under en tremånadersperiod inkluderat tidsanalyser, observationer och intervjuer. För att analysera dagens system krävdes en modell för uppskattning av monteringstider och arbetsbelastning. En djupgående förståelse av dagsläget var grunden för att skapa ett anpassat och accepterat monteringssystem. Arbetet resulterade i två förslag till monteringssystem. Det ena systemet bestod endast av en arbetsstation för enklare monteringsförfarande. Det andra systemet skall användas till mer komplexa produkter och har en högre kapacitet då den består av tre arbetsstationer. Då monteringssystemet består av tre skiljda arbetsstationer innebär detta att monteringsprocessen har delats vilket skedde genom att en avvägning mellan logisk delning och balansering. Båda systemen använde sig av ett kanbansystem för komponenttillförsel.
APA, Harvard, Vancouver, ISO, and other styles
17

Oropeza, Guillermo 1975. "Production system design and implementation in the automotive components industry." Thesis, Massachusetts Institute of Technology, 2001. http://hdl.handle.net/1721.1/89306.

Full text
APA, Harvard, Vancouver, ISO, and other styles
18

Mootoo, Dexter Myles. "Evaluation of design and operating criteria for production system design and it constituent levels." Thesis, Massachusetts Institute of Technology, 1997. http://hdl.handle.net/1721.1/43423.

Full text
APA, Harvard, Vancouver, ISO, and other styles
19

Rashidianfar, Rezvan. "System design of an evaluation aid for jobshop scheduling heuristics." Ohio : Ohio University, 1986. http://www.ohiolink.edu/etd/view.cgi?ohiou1183145803.

Full text
APA, Harvard, Vancouver, ISO, and other styles
20

Kim, Yong-Suk 1975. "A system complexity approach for the integration of product development and production system design." Thesis, Massachusetts Institute of Technology, 1999. http://hdl.handle.net/1721.1/9418.

Full text
Abstract:
Thesis (S.M.)--Massachusetts Institute of Technology, Dept. of Mechanical Engineering, 1999.
Includes bibliographical references (p. 123-129).
Complexity is generally believed to be one of the main causes of present difficulties in plant design and control. The complexity of a manufacturing system cannot be viewed without considering the products produced in the system. Lack of understanding in this relationship may lead to difficulties in product portfolio design and manufacturing system design. In this thesis, it is shown that by designing a manufacturing system properly, we can manage increased product variety while simultaneously eliminating system complexity. In addition, this thesis explains how 'lean' concepts eliminate system complexity. To see and compare complexity of manufacturing systems, complexity metrics are developed based on a complexity model provided by system theory. These metrics focus on sources of complexity to facilitate system improvements in terns of system complexity. With these metrics, a case study was carried out to apply these complexity metrics to a real industry case. In this case study, a lean manufacturing system that substitutes the existing mass-type manufacturing system is proposed and the impacts of this conversion on manufacturing system complexity are studied. According to this case study, the complexity of the proposed lean production system is much less than the complexity of the existing system in terns of proposed complexity metrics. Once the complexity of a manufacturing system is well understood, the manufacturing system can be designed to decrease complexity. In addition, product families can be designed for manufacturing systems and detailed product designs for manufacturing systems are possible.
by Yong-Suk Kim.
S.M.
APA, Harvard, Vancouver, ISO, and other styles
21

Masha, Bukola L. (Bukola Lewis) 1979. "Production system design and implementation in the European automotive components industry." Thesis, Massachusetts Institute of Technology, 2002. http://hdl.handle.net/1721.1/89886.

Full text
APA, Harvard, Vancouver, ISO, and other styles
22

Jennings, Brandon Douglas. "Leveraging smart system design to collect and analyze factory production data." Thesis, Massachusetts Institute of Technology, 2018. http://hdl.handle.net/1721.1/117969.

Full text
Abstract:
Thesis: M.B.A., Massachusetts Institute of Technology, Sloan School of Management, in conjunction with the Leaders for Global Operations Program at MIT, 2018.
Thesis: S.M., Massachusetts Institute of Technology, Department of Mechanical Engineering, in conjunction with the Leaders for Global Operations Program at MIT, 2018.
Cataloged from PDF version of thesis.
Includes bibliographical references (pages 54-55).
Li & Fung deals with many factories that are very geographically dispersed. These facilities generally do not have the capital available to invest in new technologies and processes, and the extremely manual nature of garment fabrication is the standard as a result. As customers continue to demand quicker product turn-arounds and higher levels of customization, factories need to better understand their current process limitations in an effort to optimize their internal operations. Since most of these factories collect virtually no process data, managers have a hard time focusing on areas in which to improve. This project is approaching the question of "how can we use technology in a responsible and sustainable way to better understand our process?" from the perspective of a factory manager, who cannot necessarily invest in sophisticated software and hardware systems that other industries have adopted to monitor quality. As a result, this project focuses heavily on the user experience of both the operator (quality inspector) and the manager, as both need to be able to interact with the proposed data system easily and reliably. The primary goal of this thesis is to detail the design and implementation of a data collection platform (built during internship) for use in low-tech garment factories that will: -- Enable the procurement of process data (specifically as it relates to quality) from operators in real-time. -- Allow factory management to easily view and analyze collected data. -- Employ an intuitive front-end user interface that allows operators to quickly and reliably collect data. Since a substantial portion of this internship was spent designing, building, and testing this data collection interface, the thesis will reflect the nuances associated with building and implementing factory data systems in low-tech factories where human interaction is the primary driver of system adoption. The design and deployment of this system was ultimately successful and resulted in a robust prototype that continues to provide Li & Fung with insights into how to achieve their ultimate goal of connecting their factory network to a centralized data platform.
by Brandon Douglas Jennings.
M.B.A.
S.M.
APA, Harvard, Vancouver, ISO, and other styles
23

Lee, Kaizhao. "Multiple-part-type systems in high volume manufacturing : Kanban System design for automatic production scheduling." Thesis, Massachusetts Institute of Technology, 2008. http://hdl.handle.net/1721.1/46151.

Full text
Abstract:
Thesis (M. Eng.)--Massachusetts Institute of Technology, Dept. of Mechanical Engineering, 2008.
Includes bibliographical references (leaf 71).
A Kanban Production System is designed to help a factory line meet fluctuating demands for multiple part types. Based on the parameter settings of the Control-Point Policy, the optimum Kanban levels are obtained. The simulation software Simul8 was used to model the factory line and the Kanban system. Using the optimum Kanban levels, the Kanban system will act as an automatic production scheduling system that will indicate clearly when and how much of each part-type should be produced. Use of this system will avoid unnecessary inventory and changeover cost incurred by the existing Kanban system used by the factory line. Key words: Kanban, Control-Point Policy, Optimization Disclaimer: The content of the thesis is modified to protect the real identity of the attachment company. Company name and confidential information are omitted.
by Kaizhao Lee.
M.Eng.
APA, Harvard, Vancouver, ISO, and other styles
24

Ziankevich, Maryia. "Local Roots : Celebrating sustainable methods of food production." Thesis, Umeå universitet, Institutionen Designhögskolan, 2013. http://urn.kb.se/resolve?urn=urn:nbn:se:umu:diva-72781.

Full text
Abstract:
Local Roots is a design of a system where local interest circles and study groups share their knowledge and interest in the context of an outdoor museum. Here, museum visitors can get inspired by a first glimpse into the local culture of traditional food production. This thesis project mainly focuses on the introduction experience to this system, on the outdoor museum plant tour "what's my flavor". Interactive plant audio installations of this tour are placed around the territory of the museum. By touching different parts of a plant, museum visitors trigger information about its nutritional and cultural values. They start to see food opportunities in natural ecosystems, gain experience and train watchfulness the same way they would do it for centuries before, by touching, smelling and reading the signs of nature together with the more experienced peers.
APA, Harvard, Vancouver, ISO, and other styles
25

Yang, Qinghao. "Design of an integrated CAD/CAPP system using spatial and graphic decomposition algorithm /." Hong Kong : University of Hong Kong, 1999. http://sunzi.lib.hku.hk/hkuto/record.jsp?B21129757.

Full text
APA, Harvard, Vancouver, ISO, and other styles
26

Bridge, Keith. "The application of computerised modelling techniques in manufacturing system design." Thesis, Aston University, 1990. http://publications.aston.ac.uk/11932/.

Full text
Abstract:
The absence of a definitive approach to the design of manufacturing systems signifies the importance of a control mechanism to ensure the timely application of relevant design techniques. To provide effective control, design development needs to be continually assessed in relation to the required system performance, which can only be achieved analytically through computer simulation. The technique providing the only method of accurately replicating the highly complex and dynamic interrelationships inherent within manufacturing facilities and realistically predicting system behaviour. Owing to the unique capabilities of computer simulation, its application should support and encourage a thorough investigation of all alternative designs. Allowing attention to focus specifically on critical design areas and enabling continuous assessment of system evolution. To achieve this system analysis needs to efficient, in terms of data requirements and both speed and accuracy of evaluation. To provide an effective control mechanism a hierarchical or multi-level modelling procedure has therefore been developed, specifying the appropriate degree of evaluation support necessary at each phase of design. An underlying assumption of the proposal being that evaluation is quick, easy and allows models to expand in line with design developments. However, current approaches to computer simulation are totally inappropriate to support the hierarchical evaluation. Implementation of computer simulation through traditional approaches is typically characterized by a requirement for very specialist expertise, a lengthy model development phase, and a correspondingly high expenditure. Resulting in very little and rather inappropriate use of the technique. Simulation, when used, is generally only applied to check or verify a final design proposal. Rarely is the full potential of computer simulation utilized to aid, support or complement the manufacturing system design procedure. To implement the proposed modelling procedure therefore the concept of a generic simulator was adopted, as such systems require no specialist expertise, instead facilitating quick and easy model creation, execution and modification, through simple data inputs. Previously generic simulators have tended to be too restricted, lacking the necessary flexibility to be generally applicable to manufacturing systems. Development of the ATOMS manufacturing simulator, however, has proven that such systems can be relevant to a wide range of applications, besides verifying the benefits of multi-level modelling.
APA, Harvard, Vancouver, ISO, and other styles
27

Attergren, Max, and Martin Lindwall. "Air Liquid Interface System." Thesis, KTH, Skolan för industriell teknik och management (ITM), 2021. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-299329.

Full text
Abstract:
The ALI-System is used to determine the toxicity of airborne nanoparticles to the human lungs. The following report seeks to describe the process of preparing an ALI-system built in a laboratory, for use outdoor. The project also involves preparing the existing ALI-system for manufacturing. The report mainly discusses the ALI-systems components, how these are constructed, demands and function. The ALI-system is very complex and needs many assisting systems to work. Some of these systems and problems with current solutions are discussed within this report. The main focus of the report is electrical systems, CAD and drafts. But also discussed are some thermal analyses.  The project generated a complete set of drafts of the exposure unit, a concept for all the electrical components and an evaluation of the heating system. The project departed from its main thesis since the available time to work on the thesis was cut short since all of the parts were not available from start, but also since there was a shortage of available workshop workers after June. Despite this the project could be regarded as successful since the client was happy with the end result.
Ett ALI-System används för att undersöka om luftburna nanopartiklar kan vara skadliga för människliga lungor. Nedan följer en rapport där ett ALI-System byggt i labb anpassas och förbereds för tillverkning. Tanken är att det skall konstrueras ett mobilt ALI-System som möjliggör mätningar i fält. Rapporten behandlar i huvudsak vilka komponenter som ingår, utformning av dessa samt krav och funktion. Systemet som skall konstrueras är komplext och kräver många delsystem för att klara av mätningar i fält. Delar av dessa system och lösningar på problem behandlas i rapporten. Huvudområden som behandlas är elektriska system, CAD och ritningar samt termiska analyser för att möta de krav som ställs. Projektet genererade ett komplett ritningsunderlag av exponeringsenhet, konceptframtagning för elektriska system samt dimensionering och analys av uppvärmningskällor. Projektets initiala mål att konstruera ett mobilt system, frångicks då upphandlingar av komponenter försenades samt att uppdragsgivaren behövde ritningsunderlag omgående på grund av tillgängligheten av verkstadspersonal under projektets gång. Trots detta anses projektet lyckat då uppdragsgivaren tillhandhölls det som önskades och arbetet som gjordes kan ligga till grund för vidareutveckling av ett mobilt system.
APA, Harvard, Vancouver, ISO, and other styles
28

Stricker, Karin E. "Design and development of an internal quality audit system for AWC." Menomonie, WI : University of Wisconsin--Stout, 2007. http://www.uwstout.edu/lib/thesis/2007/2007strickerk.pdf.

Full text
APA, Harvard, Vancouver, ISO, and other styles
29

Wan, Yen-Tai. "Material transport system design in manufacturing." Diss., Available online, Georgia Institute of Technology, 2006, 2006. http://etd.gatech.edu/theses/available/etd-03282006-231022/.

Full text
Abstract:
Thesis (Ph. D.)--Industrial and Systems Engineering, Georgia Institute of Technology, 2006.
Dr. Yih-Long Chang, Committee Member ; Dr. Martin Savelsbergh, Committee Member ; Dr. Leon McGinnis, Committee Co-Chair ; Dr. Gunter Sharp, Committee Chair ; Dr. Doug Bodner, Committee Member ; Dr. Joel Sokol, Committee Member.
APA, Harvard, Vancouver, ISO, and other styles
30

Zhang, Yuguo. "On coupling prolog to a database management system and an associated design method." Thesis, University of York, 1990. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.280520.

Full text
APA, Harvard, Vancouver, ISO, and other styles
31

Kabalan, Belal. "Design, implementation and control of microwave plasma gasification system for syngas production." Thesis, Liverpool John Moores University, 2012. https://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.589784.

Full text
Abstract:
This thesis provides a solution for sustainable energy production. It applies the newest technologies of microwave plasma on a traditional method known as gasification. The simulation of this system has been achieved through a high frequency structure simulator to decide the best design of the structure. Microwave radiation at the frequency of 2.45 GHz has been applied to ionise argon gas and convert it into plasma. It has been proven that plasma can be self-initiated with an appropriate electric field applied. This microwave-induced plasma is the heart and soul of the Liverpool John Moores University's gasification system. It is coupled to a gasification chamber to gasify the feedstock placed inside and extract its energy as synthesis gas (i.e. hydrogen and carbon monoxide). Feedstock used in this study is carbon based material including pieces of wood and palm date seeds. This work is novel as no other work upto the date of this thesis completion has studied the different variables affecting plasma creation, plus the automation and the fully control of the microwave plama gasification system. Results reveal that after improvement of the microwave-induced plasma by automated control, it was possible to increase the synthesis gas production to 25.7% hydrogen and more than 57.6% carbon monoxide. This study has included the effects of some parameters on the plasma created, thus on its efficiency. These parameters are; the power of the microwave radiation, the reflected power from the system, the flow rate of argon and the pressure inside the gasification chamber. Other effects were taken into consideration throughout the project such as the study of the sample's moisture levels on the gas production and the use of helium gas instead of argon for plasma creation. The system has proved the benefits of applying microwave-induced plasma technology on the gasification technology. These benefits can be summarised as the reduction of the input power needed for the procedure from the range of megawatts to 1 kilowatt, and the flexibility achieved through controlling the plasma jet for an improved process.
APA, Harvard, Vancouver, ISO, and other styles
32

Scheinman, David Eliot. "Discrete event simulation and production system design for Rockwell hardness test blocks." Thesis, Massachusetts Institute of Technology, 2009. http://hdl.handle.net/1721.1/55233.

Full text
Abstract:
Thesis (M. Eng.)--Massachusetts Institute of Technology, Dept. of Mechanical Engineering, 2009.
Cataloged from PDF version of thesis.
Includes bibliographical references (p. 41).
The research focuses on increasing production volume and decreasing costs at a hardness test block manufacturer. A discrete event simulation model is created to investigate potential system wide improvements. Using the results from the simulation a production work-cell is proposed that will allow a single worker to operate 7 machines at a rate that exceeds existing production rates. This results in the workforce being reduced by a factor of four while reducing product lead-time by 30% and increasing throughput by 50%.
by David Eliot Scheinman.
M.Eng.
APA, Harvard, Vancouver, ISO, and other styles
33

Donato, Brian (Brian Matthew) 1971. "Design of a manufacturing system for the production of flatwire wiring harnesses." Thesis, Massachusetts Institute of Technology, 1998. http://hdl.handle.net/1721.1/9884.

Full text
Abstract:
Thesis (S.M.)--Massachusetts Institute of Technology, Dept. of Mechanical Engineering; and, (S.M.)--Massachusetts Institute of Technology, Sloan School of Management, 1998.
Includes bibliographical references (p. 147-148).
by Brian Donato.
S.M.
APA, Harvard, Vancouver, ISO, and other styles
34

Reynal, Vicente A. 1974. "Production system design and its implementation in the automotive and aircraft industry." Thesis, Massachusetts Institute of Technology, 1998. http://hdl.handle.net/1721.1/9914.

Full text
Abstract:
Thesis (S.M.)--Massachusetts Institute of Technology, Dept. of Mechanical Engineering; and, (S.M.)--Massachusetts Institute of Technology, Technology and Policy Program, 1998.
Includes bibliographical references (leaves 197-198).
by Vicente A. Reynal.
S.M.
APA, Harvard, Vancouver, ISO, and other styles
35

Tapia, Carlos (Carlos Francisco) 1976. "Application of the production system design framework in the automotive components industry." Thesis, Massachusetts Institute of Technology, 2001. http://hdl.handle.net/1721.1/8553.

Full text
Abstract:
Thesis (S.M.)--Massachusetts Institute of Technology, Dept. of Mechanical Engineering, 2001.
Includes bibliographical references (p. 111-113).
The environment that companies face nowadays is increasingly competitive. In this setting firms must ensure that its Production System is aligned with its business objectives. However, Production Systems can be extremely complex and their design involves many different disciplines. The Manufacturing System Design Decomposition (MSDD) developed by the Production System Design Laboratory at MIT is useful to identify the objectives (Functional Requirements - FRs), and the corresponding implementation (Design Parameters - DPs) for the key decisions that must be made to design a manufacturing system. This work presents the Production System Design Framework, which is based on the MSDD, as a roadmap to approach the intricate design and implementation process. Special attention is placed on an important part of the framework: The Production System Design and Deployment Steps. This thesis exhibits the direct application of the PSD Framework to the design and implementation of an automotive components production system. The basis for this design is the MSDD and it is implemented through the Production System Design and Deployment Steps. Each step is described in detail and it is explained how it was adapted to the particular requirements of the project. Additionally, a manufacturing system of electronics components is examined. Two different system designs for the same product are studied. The analysis is performed using traditional performance metrics as the evaluating criteria. In addition, this analysis is contrasted to an analysis made using the MSDD. The similarities of the results validate the importance of the MSDD. Furthermore, the MSDD is used to identify potential areas for improvement.
by Carlos Tapia.
S.M.
APA, Harvard, Vancouver, ISO, and other styles
36

Singh, Minerva. "Design of a system to support policy formulation for sustainable biofuel production." Thesis, University of Oxford, 2010. http://ora.ox.ac.uk/objects/uuid:db054d43-6359-45cd-af82-a71abd2b288b.

Full text
Abstract:
The increased demand for biofuels is expected to put additional strain on the available agricultural resources while at the same time causing environmental degradation. Hence, new energy policies need to be formulated and implemented in order to meet global energy needs while reducing the impact of biofuels farming and production. This research focuses on proving a decision support system which can aid the formulation of policies for the sustainable biofuel production. The system seeks to address policy formulation that requires reconciliation of the qualitative aspects of decision making (such as stakeholder’s viewpoints) with quantitative data, which often may be imprecise. To allow this, based on: Fuzzy logic and Multi Criteria Decision Making (MCDM) in the form of Analytical Hierarchy Process (AHP). Using these concepts, three software functionalities, “Options vs. Fuzzy Criteria Matrix”, “Analytical Hierarchy Process” and “Fuzzy AHP” were developed. These were added within the framework of pre-existing base software, Compendium (developed by the Open University, UK). A number of case study based models have been investigated using the software. These models made use of data from the Philippines and India in order to pinpoint suitable land and crop options for these countries. The models based on AHP and Fuzzy AHP were very successful in identifying suitable crop options for India by capturing both the stakeholder viewpoints and quantitative data. The software functionalities are very effective in scenario planning and selection of policies that would be beneficial in achieving a desired future scenario. The models further revealed that the newly developed software correctly identified many of the important issues in a consistent manner.
APA, Harvard, Vancouver, ISO, and other styles
37

Cooley, Christiana Clark. "A Research Design for Assessing the Possibilities of Localized Food Production." Thesis, Virginia Tech, 2007. http://hdl.handle.net/10919/33662.

Full text
Abstract:
Local food production movements have claimed a central role in proposals to mitigate some of the negative effects of economic globalization. Although not meant to be a panacea for the ills of the neoliberal order, local food production is advocated as a sustainable solution to a portion of the environmental degradation caused by global capitalism, and as a mechanism by which to rebuild community networks undermined by the globalization of commerce and culture and create the type of sustainable development necessary to restore and preserve the carrying capacity of the planet. This study seeks to develop a conceptual framework for assessing the potential for communities to create and sustain local food production by addressing three major factors that influence a communityâ s ability to localize its food system: the physical capacity of the region or locality to produce enough food to feed its inhabitants, successful policy and trade adjustments by governments to create and enable the survival of local food production systems, and the willingness of consumers to participate in a localized food production system, which includes the communityâ s willingness and ability to bear the costs of instituting and maintaining the local system.
Master of Arts
APA, Harvard, Vancouver, ISO, and other styles
38

Mora-Camino, Félix. "Synthese de travaux sur l'analyse, la planification et la commande de systemes complexes de production et de transport." Toulouse 3, 1987. http://www.theses.fr/1987TOU30209.

Full text
APA, Harvard, Vancouver, ISO, and other styles
39

Wang, Xiaoxi. "Design of virtual cellular manufacturing systems using genetic algorithms." Click to view the E-thesis via HKUTO, 2003. http://sunzi.lib.hku.hk/hkuto/record/B42577305.

Full text
APA, Harvard, Vancouver, ISO, and other styles
40

Asadi, Narges. "Supporting flexibility in an assembly system through product design." Licentiate thesis, Mälardalens högskola, Innovation och produktrealisering, 2015. http://urn.kb.se/resolve?urn=urn:nbn:se:mdh:diva-27853.

Full text
Abstract:
Increasing customer demands for product variety in conjunction with the short lifecycle of products has caused manufacturing companies to introduce a wide range of products by accommodating flexibility. An assembly system is an essential part of the manufacturing system from both cost and time perspectives. Hence, the shift towards flexibility in manufacturing companies highlights the significance of establishing flexible assembly systems and designing products that are closely aligned with them. Despite its significance, however, the flexible assembly system concept and its requirements for product design have not been clearly defined in research and from a practical point of view. Most research on flexible assembly systems has mainly approached either the design or the balancing and scheduling issues of these systems, whereas only a few studies have briefly defined the flexible assembly system they focused on, without further specifying the characteristics of a flexible assembly system and its requirements for product design. Taking that into account, the objective of this work is to provide a framework to contribute to the understanding of the concept of flexibility in an assembly system and its requirements for product design. In order to fulfil the objective, four empirical studies combined with literature reviews have been conducted. The empirical studies, a multiple case study and three single case studies, investigate the definition of flexibility in an assembly system as well as the requirements that a flexible assembly system imposes on product design. Through its findings, this research provides a definition of flexibility in assembly systems that mainly revolves around volume, mix and new product flexibility. In addition, six constituents of a flexible assembly system have been identified: adaptable material supply, versatile workforce, increased commonality, standardised work content, integrated product properties and strategic planning. Furthermore, three requirements of a flexible assembly system for product design are defined, which, if fulfilled, reduce the complexity created by product variety and consequently support flexibility in the assembly system. Accordingly, to increase the understanding of the concept of flexibility in an assembly system and its requirements for product design, a four-staged framework is suggested. The proposed framework deals with the activities related to the concept and the development of a flexible assembly system and is expected to be received by assembly practitioners as a link between assembly and product design teams in the product realisation process. Future research can further validate the framework in practice.
INNOFACTURE - innovative manufacturing development
APA, Harvard, Vancouver, ISO, and other styles
41

楊淸好 and Qinghao Yang. "Design of an integrated CAD/CAPP system using spatial and graphic decomposition algorithm." Thesis, The University of Hong Kong (Pokfulam, Hong Kong), 1999. http://hub.hku.hk/bib/B31239602.

Full text
APA, Harvard, Vancouver, ISO, and other styles
42

Yazdianpour, Hamid. "Some aspects of system design for production management in the rolling-mill industry." Thesis, Aston University, 1989. http://publications.aston.ac.uk/11916/.

Full text
Abstract:
Case studies in copper-alloy rolling mill companies showed that existing planning systems suffer from numerous shortcomings. Where computerised systems are in use, these tend to simply emulate older manual systems and still rely heavily on modification by experienced planners on the shopfloor. As the size and number of orders increase, the task of process planners, while seeking to optimise the manufacturing objectives and keep within the production constraints, becomes extremely complicated because of the number of options for mixing or splitting the orders into batches. This thesis develops a modular approach to computerisation of the production management and planning functions. The full functional specification of each module is discussed, together with practical problems associated with their phased implementation. By adapting the Distributed Bill of Material concept from Material Requirements Planning (MRP) philosophy, the production routes generated by the planning system are broken down to identify the rolling stages required. Then to optimise the use of material at each rolling stage, the system generates an optimal cutting pattern using a new algorithm that produces practical solutions to the cutting stock problem. It is shown that the proposed system can be accommodated on a micro-computer, which brings it into the reach of typical companies in the copper-alloy rolling industry, where profit margins are traditionally low and the cost of widespread use of mainframe computers would be prohibitive.
APA, Harvard, Vancouver, ISO, and other styles
43

Patneaude, Steven M. "Transforming commercial aerospace supply chain management practices by utilizing Toyota production system principles, practices, and methodologies." Thesis, Massachusetts Institute of Technology, 2008. http://hdl.handle.net/1721.1/43112.

Full text
Abstract:
Thesis (S.M.)--Massachusetts Institute of Technology, System Design and Management Program, 2008.
Includes bibliographical references (leaves 132-133).
This thesis examines The Toyota Motor Corporation's core precepts, management principles, supply chain architecture, product development methods, leveraged practice of supplier partnerships and procurement practices, all of which are integral elements associated with the Toyota Production System, and assesses the scalability these elements for application in the commercial aerospace industry.The methodology used in this study includes an examination of basic concepts and practices that Toyota employs throughout its extended enterprise and which are being widely adopted throughout the automotive industry as well as other industries worldwide, based on a review of the open literature. The research also draws upon the author's first-hand exposure to Toyota's production system through field research involving benchmarking site-visits to Toyota plants, and makes use of extensive interviews conducted with both automotive and aerospace industry experts.The research reported in this thesis reveals that Toyota's Production System, as a mutually reinforcing set of principles, methods and practices, are indeed scalable to the aerospace industry and that one of the two commercial aerospace behemoths, Boeing and Airbus, has an opportunity to leverage them in order to obtain a clear and sustainable competitive advantage in the industry. This is possible, however, with an important caveat: the end-to-end enterprise transformation process would need to be based on adopting a long-term approach to renovating the current system, working closely with the supply chain partners, owning the change process, and holding steady over the longer-haul.
by Steven M. Patneaude.
S.M.
APA, Harvard, Vancouver, ISO, and other styles
44

Camacho, Gonzalez Daniel. "Techno-economic analysis of jet fuel production from waste vegetable oil in Mexico." Thesis, Massachusetts Institute of Technology, 2016. http://hdl.handle.net/1721.1/107372.

Full text
Abstract:
Thesis: S.M. in Engineering and Management, Massachusetts Institute of Technology, School of Engineering, System Design and Management Program, Engineering and Management Program, 2016.
Cataloged from PDF version of thesis.
Includes bibliographical references (pages 47-55).
This thesis quantifies the economic feasibility of building and operating a biorefinery that converts waste vegetable oils into transportation fuels in Mexico. The hydroprocessing technology selected produces predominately diesel and jet fuel that can be used and blended with the existing fossil fuel infrastructure. The analysis shows that a 4,000 BPD plant located in Mexico can reach a positive NPV of approximately $80 million over a 20-year operating period at an internal rate of return of 15% percent. The minimum selling price for reaching this internal rate of return is $2.21 per gallon for diesel and $2.36 per gallon for jet fuel. If sufficient and reliable feedstock supply exist for a scale-up of the biorefinery to 6500 bpd, NPV increases to approximately $180 million. Sensitivity analyses shows that the NPV for the 4000 bpd facility reaches zero at an internal rate of return of 24%, and that the maximum buying price of the waste vegetable oil at the baseline internal rate of return of 15% percent the plant can afford to procure is $0.73 per gallon, which is 36% higher than the average price for the feedstock in 2013. Finally, the thesis quantifies the commercial opportunity of exporting the produced transportation fuels to the United States where they might qualify for monetary incentives. After accounting for transportation costs the NPV of fuel production in the biorefmery increases to $294 million, 368% higher than if transportation fuels are sold in Mexico.
by Daniel Camacho Gonzalez.
S.M. in Engineering and Management
APA, Harvard, Vancouver, ISO, and other styles
45

Hitchins, Timothy Michael. "Assessing PPGIS Usability and its Relationship to Spatial Data Production: a Case Study." PDXScholar, 2018. https://pdxscholar.library.pdx.edu/open_access_etds/4521.

Full text
Abstract:
Modern Geoweb-enabled PPGIS methodologies incorporate interactive map applications as the main driver for public engagement and data collection. However, little research explores exactly how the public interact with these applications to produce spatial data, a fact that contributes to criticisms of final data quality. Usability evaluation offers a solution for developing better PPGIS data production systems by identifying problems in the application interface for which the public engage. Drawing on a case study example of a PPGIS application developed to collect socio-spatial data from members of a random public, this paper addresses usability in a three-stage approach. First, controlled experimentation methods capture performance, preference, and data production metrics. Second, visual and statistical analysis of the captured usability data identify problems in the interface. Results indicate that users learned, became efficient, and were generally satisfied with the application, but also committed errors that may have affected data quality. Third, a solution-oriented critique of the application interface suggests new design options to mitigate future problems in similar applications. The paper ends by providing a conceptual framework for usability as it relates to PPGIS data production and incorporates it into an informed discussion on data quality and future research needs for maintaining the viability of PPGIS projects.
APA, Harvard, Vancouver, ISO, and other styles
46

Cooke, Iain Carlyle. "Design of a production activity control system for the computer integrated manufacturing enviroment." Thesis, Cranfield University, 1990. http://dspace.lib.cranfield.ac.uk/handle/1826/4602.

Full text
Abstract:
This thesis describes the results of research into provision of Production Activity Control (PAC) in Computer Integrated Manufacturing Systems for manufacture of discrete parts. The role and environment of PAC systems is described, against the background of development of the discrete parts manufacturing industry. Strategies and architectures for building PAC systems are reviewed, in terms of the goals of PAC systems, and the categorisation of existing design approaches. A novel design for a PAC system is presented. A model of manufacturing is described upon which the system design is based, and which defines the applicability of the proposed system. The heterarchical, data-driven system architecture is explained, and the way in which the system's design supports the various aspect of PAC functionality is described. A simple example is presented to illustrate the workings of the system as it accepts production orders and controls production. An experimental implementation of the system is described, and the results discussed. Recommendations for future implementations are'made in further discussion, stemming from the experiences of this experimentation, and from consideration of wider issues in the development of manufacturing technology. The thesis concludes with a brief statement of achiever nts, an'' some recommendations for directions of further research.
APA, Harvard, Vancouver, ISO, and other styles
47

Phadnis, Vrushank S. (Vrushank Shripad). "Production line design and system analysis for new product introduction in electronics manufacturing." Thesis, Massachusetts Institute of Technology, 2013. http://hdl.handle.net/1721.1/85788.

Full text
Abstract:
Thesis: M. Eng. in Manufacturing, Massachusetts Institute of Technology, Department of Mechanical Engineering, 2013.
Cataloged from PDF version of thesis.
Includes bibliographical references (pages 99-100).
In this research, a system level analysis was performed on a one piece flow layout design for a factory manufacturing AC motor control drives. The requirement was to create a layout for a new product while integrating existing manufacturing lines. Analytical methods and simulation techniques were used to validate the performance of the proposed line. The thesis outlines the manufacturing processes required to make the new product and presents an approach used to predict the new line's performance. A hybrid approach was employed wherein analytical methods were used to create a baseline plan of the production line. The baseline requirements were refined by modeling the line in a discrete event simulation to emulate existing factory constraints. The use of simulation enabled definition of lower level details like shift breaks times, machine breakdown trends and product batching policies. The simulation model was used to predict the impact of factory scenarios that were determined as necessary milestones in transforming the factory layout from existing layout to the proposed layout. The concept of changing the layout from process based to one piece flow was validated through a Kaizen event. The event resulted in floor space savings of 500 sq. ft. and a reduction in work in progress inventory of 2160 drives. The Kaizen event facilitated in familiarizing with the existing factory processes which was essential in creating the new factory layout.
by Vrushank S. Phadnis.
M. Eng. in Manufacturing
APA, Harvard, Vancouver, ISO, and other styles
48

Huston, Todd W. (Todd Wendell). "Production system design and cycle time reduction in a fuel cell manufacturing operation." Thesis, Massachusetts Institute of Technology, 1996. http://hdl.handle.net/1721.1/10910.

Full text
Abstract:
Thesis (M.S.)--Massachusetts Institute of Technology, Sloan School of Management, 1996, and Thesis (M.S.)--Massachusetts Institute of Technology, Dept. of Mechanical Engineering, 1996.
Includes bibliographical references (leaves 104-105).
by Todd W. Huston.
M.S.
APA, Harvard, Vancouver, ISO, and other styles
49

Kowalski, Joseph S. (Joseph Stanley). "An evaluation of the design of manufacturing measureables for the Ford production system." Thesis, Massachusetts Institute of Technology, 1996. http://hdl.handle.net/1721.1/10672.

Full text
Abstract:
Thesis (M.S.)--Massachusetts Institute of Technology, Sloan School of Management, 1996, and Thesis (M.S.)--Massachusetts Institute of Technology, Dept. of Mechanical Engineering, 1996.
Includes bibliographical references (p. 103-105).
by Joseph Stanley Kowalski.
M.S.
APA, Harvard, Vancouver, ISO, and other styles
50

Swaan, Arons Henk de. "Delfi design, development and applicability of expert system shells /." Delft : Delft University Press, 1991. http://books.google.com/books?id=2NZQAAAAMAAJ.

Full text
Abstract:
Thesis (doctoral)--Technische Universiteit Delft, 1991.
Summary and vita in Dutch and English; "stellingen" in Dutch. "Stellingen" inserted. Includes bibliographical references (p. 227-252) and index.
APA, Harvard, Vancouver, ISO, and other styles
We offer discounts on all premium plans for authors whose works are included in thematic literature selections. Contact us to get a unique promo code!

To the bibliography