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1
Lanke, Amol. „Mine Production Assurance Program- Development and Application“. Doctoral thesis, Luleå tekniska universitet, Drift, underhåll och akustik, 2016. http://urn.kb.se/resolve?urn=urn:nbn:se:ltu:diva-61123.
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ssuring production forms a crucial part of mining business profitability. Factors related to various mine operations, activities and business processes can threaten required/planned mine production. To address problems and ensure production level in mining, it is necessary to implement a mine production assurance program (MPA). In order to propose a guideline and its component, this study started by reviewing four such techniques used in process industries. Comparing the tools, techniques and focus with mining productivity and production factors, it was observed that applicability of these methods for mining is limited due to lack of focus on equipment focus, cost focus and other parameters. Similarity of objectives and requirements of equipment focus lead to conclusion that PAP from oil and gas industry seems to be method which can guide MPA.\parAs a basis of MPA, an index is required to create a clear relationship between different situations which can occur in mining operation and production loss. A literature review on mining productivity improvement methods shows availability, utilisation and production performance of equipment are the key factors in determining overall production. A single index applicable for chain operation in mining is needed. A Mine Production index (MPi) is thus proposed. This index involves all three parameters for equipment productivity mentioned above. Weights associated with MPi calculation for bottleneck equipment can point out critical factors in equipment operation. Once bottleneck equipment and relevant critical factors are known, further analysis can be carried out to determine the possible causes of production loss. By using MPi for machine operations, it is possible to rank machines in terms of production effectiveness. When the study applied MPi to chain operations in a mining case study, a crusher was determined as bottleneck equipment.\parMining operation is heavily influenced by internal and external uncertainties. Operational uncertainties related to equipment includes its key factors leading to production i.e. availability, utilisation and performance. These factors are in turn dependent upon downtime, idle time, rated capacities. External parameters related to weather are based upon location of mining operation. Influence of these factors on production volume, could be used for better decision making during mining operations optimization. To effectively propose a method for correlating internal and external parameters with production volume, case studies in an open pit mine were conducted. During these case studies a multi-regression modelling methodology is used. It was found that at system level availability is important criteria for increasing production. At level of shovel and truck fleet, availability and utilisation are most important characteristics to be focused for reduction in production uncertainty. Environmental factors are although correlate to less variation in production volume compared to operational factors. Amongst considered environmental factors snowfall is highly influencing followed by rainfall. At system level use of maximum capacities of equipment and availability are key point for increasing production. Based on analysis of internal operational factors, it was concluded that capacity of shovel and trucks is underutilised. For shovels availability and idle time are influential factors. For trucks utilisation is highly correlated to production volume generated. Analysis of environmental factors concluded that, period of zero snowfall and rainfall are perfect condition for equipment production increase. Period when either snowfall or rainfall stabilisation are also equivalent to achieve higher production. Although these production levels are significantly less than period without snow and rain
2
Greenham, Jeffrey S. „West Virginia University ceramic arts Production Studio program“. Morgantown, W. Va. : [West Virginia University Libraries], 2002. http://etd.wvu.edu/templates/showETD.cfm?recnum=2357.
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Thesis (M.F.A.)--West Virginia University, 2002.Title from document title page. Document formatted into pages; contains iv, 49 p. Vita. Includes abstract. Includes bibliographical references (p. 48-49).
3
McGinley, Susan. „From Conception to Consumer: A Comprehensive Beef Production Program“. College of Agriculture and Life Sciences, University of Arizona (Tucson, AZ), 2001. http://hdl.handle.net/10150/622257.
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McHenry, Bruce Alan 1959. „RIPE--rapid instruction production environment“. Thesis, Massachusetts Institute of Technology, 1997. http://hdl.handle.net/1721.1/62626.
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Resnick, Richard J. (Richard Jay) 1971. „The economics of biological methods of hydrogen production“. Thesis, Massachusetts Institute of Technology, 2004. http://hdl.handle.net/1721.1/17885.
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Thesis (S.M.M.O.T.)--Massachusetts Institute of Technology, Sloan School of Management, Management of Technology Program, 2004.Includes bibliographical references (p. 98-108).
The costs to produce and utilize hydrogen are extremely high per unit of energy when compared to fossil fuel energy sources such as natural gas or gasoline. The cheapest hydrogen production approaches today are also the most polluting, as they use fossil fuels in even more inefficient ways than cars do. Renewable approaches to hydrogen production are- at best- three times more expensive per unit energy than the cost to produce the same amount of natural gas. The production of hydrogen through biological systems is one area of particularly promising research. There are countless biological systems that produce energy from sunlight, and countless others that produce energy from the metabolism of organic molecules such as glucose. Many microbial organisms produce hydrogen under certain conditions. Optimizing their innate ability to produce hydrogen and developing biohydrogen plants whose economics compete with current commercial plants are key hurdles that must be overcome. Economic models for the production of hydrogen through biological systems are examined in detail in this thesis. The key technical hurdles which drive the capital and production costs are identified. Fruitful areas of potential research are suggested to bring biological hydrogen production to commercial scale as rapidly as possible.
by Richard J. Resnick.
S.M.M.O.T.
6
Ileso, Bamidele S. „Structural adjustment program and agricultural production in Nigeria (1970-1996)“. Thesis, National Library of Canada = Bibliothèque nationale du Canada, 2000. http://www.collectionscanada.ca/obj/s4/f2/dsk1/tape3/PQDD_0020/MQ57254.pdf.
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Littlefield, Joanne. „The Desert Vegetable Crop Production Program: Assistance for Arizona's Growers“. College of Agriculture and Life Sciences, University of Arizona (Tucson, AZ), 2000. http://hdl.handle.net/10150/622279.
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8
Sherburne, Morgan (Morgan L. ). „Distant harvest : the production and price of organic food“. Thesis, Massachusetts Institute of Technology, 2010. http://hdl.handle.net/1721.1/60843.
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Thesis (S.M. in Science Writing)--Massachusetts Institute of Technology, Dept. of Humanities, Graduate Program in Science Writing, 2010."September 2010." Cataloged from PDF version of thesis.
Includes bibliographical references (p. 35-37).
Organic food is growing in popularity, enjoying a 15 to 20% increase in sales, yearly, since about 1997, according to the Organic Trade Association. Organic produce makes up about 2% of the United States' total food sales - and because it doesn't rely on synthetic pesticides or herbicides, some view it as more environmentally friendly than its conventionally grown counterpart. But it's a complicated way to farm. A truly organic method of farming, according to Sir Albert Howard, the British grandfather of organic methods, uses crop rotation, compost as fertilizers, and grows a plethora of produce. Organic produce is expensive to grow in this way, and it hits consumer pocketbooks with a wallop. Produce from large-scale organic farms is less expensive, but those large-scale farms do not challenge the way food has been grown, says University of California - Santa Cruz professor Julie Guthman. They grow in monocultures, like conventional farms, and use large amounts of organic fertilizer and pesticides. They also take advantage of migrant labor. And after this, customers can expect to pay up to 50% more for an organic diet compared to a conventional one, according to Consumer Reports. If we eventually switch over to a more sustainable way of growing our food, we could, says MIT agricultural historian Deborah Fitzgerald, experience the gentrification of our food system.
by Morgan Sherburne.
S.M.in Science Writing
9
Sheldon-Coulson, Garth Alexander. „Production of levulinic acid in urban biorefineries“. Thesis, Massachusetts Institute of Technology, 2011. http://hdl.handle.net/1721.1/68450.
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Thesis (S.M. in Technology and Policy)--Massachusetts Institute of Technology, Engineering Systems Division, Technology and Policy Program, 2011.Cataloged from PDF version of thesis.
Includes bibliographical references (p. 81-84).
The energy security of the United States depends, most experts agree, on the development of substitute sources of energy for the transportation sector, which accounts for over 93% of the nation's petroleum consumption. Although great strides have been made in the development of electric vehicles and associated generation and transmission platforms, technical and economic considerations dictate that the transportation sector will rely preponderately on organic fuels for the foreseeable future. The U.S. Department of Energy and U.S. Department of Agriculture have therefore indicated that integrated cellulosic biorefineries, whose feedstock is abundant lignocellulosic plant matter rather than scarce starch, are a vital area for research, development, and commercialization. This thesis evaluates the commercial viability of cellulosic biorefineries in and near the nation's urban centers, where significant volumes of carbohydrate feedstock are already concentrated, collected, and hauled as municipal and commercial wastes and therefore available to commercial users at negative cost. The case evaluated is a prospective demonstration-scale facility located in the urban corridor linking New York and Philadelphia, where "tipping fees" received for redirecting urban waste from landfills are the highest in the nation. The chosen conversion platform, a mature technology called the Biofine Process that has not previously been commercialized, uses acid-catalyzed hydrolysis of the carbohydrate feedstock to produce levulinic acid, a noted "platform chemical" that provides three main benefits: (1) convertibility from diverse and heterogeneous carbohydrate feedstocks containing the high moisture levels characteristic of putrescible wastes, (2) high conversion yields using the chosen conversion platform, and (3) a wide variety of downstream synthetic transformations to valuable derivatives, including fuels. Co-products include formic acid and furfural. In order to evaluate the economic underpinnings of such a facility, the chosen conversion platform is described on the basis of publicly available documents and modeled using a novel domain-specific language (DSL) and symbolic solution library developed for this thesis. This software tool is used to determine the dynamic equilibrium conditions of the process flow of the chemical plant, including net throughput and energy consumption. Such a tool is required because the process flow of the chosen conversion platform feeds back on itself by recycling hydrolysate and acid catalyst, mandating simultaneous solution. A financial model is presented on the basis of the equilibrium process model showing that public support for such a project is required at the vital demonstration scale. The significant public policy benefits associated with urban biorefineries that can divert putrescible wastes from landfills are therefore shown in this case to depend on public support. In order to estimate the appropriate level of subsidy, external environmental and security benefits are quantified. A study of past federal funding patterns ultimately shows that this level of funding is unlikely to accrue to urban projects without changes in the rural emphasis of current policy and public administration.
by Garth Alexander Sheldon-Coulson.
S.M.in Technology and Policy
10
Sansaloni, Talens Javier. „Building a Production Module for a Telecommunications Company“. Thesis, Norwegian University of Science and Technology, Department of Computer and Information Science, 2009. http://urn.kb.se/resolve?urn=urn:nbn:no:ntnu:diva-9049.
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Nowadays the computer science is extremely important in business; thanks to it you can automate tasks, streamline processes and obtain information. The best resource for the new companies is the information. I mean, today the information is very necessary with the new technologies. Employers who are responsible to decide in their companies, have begun to understand that the information helps their business and also can be one of the best critical factors that can show us if the company work is successfully or not. (1) In recent years organizations have recognized the importance of managing key resources such as the working hours and the raw materials. ERP applications are often used to standardize business processes and unify data; the importance of that software in the companies is growing every day. Although we also can say that in some cases the ERP software doesn´t solve some business problems because there are processes that aren´t standard or common. Moreover, if we would create a module for our company it has to be usable .The usability is very important because that and the automation will help to increase the performance of coordinators. This project is a study of a particular case of a telecommunications company in which it has found a problem with the production process; In This Project we will be able to solve each problem that will appear in various stages of construction our module. These steps include: a study about if there are problems in the selected area of business, whether buying or building a new module, heuristic techniques and methods to improve the usability, quality of build module using polls, usability guidelines, use case... The results have improved the production of the company and the system provides the necessary information to the coordinators but the coordinators want further improvement. The study of the usability helps users to be ready to use the software correctly.
11
Chouinard, Natalie 1979. „China production equipment sourcing strategy“. Thesis, Massachusetts Institute of Technology, 2009. http://hdl.handle.net/1721.1/51664.
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Thesis (S.M.)--Massachusetts Institute of Technology, Dept. of Mechanical Engineering; and, (M.B.A.)--Massachusetts Institute of Technology, Sloan School of Management; in conjunction with the Leaders for Manufacturing Program at MIT, 2009.Includes bibliographical references (p. 61-62).
This thesis recommends a China business and equipment strategy for the Controls Conveyor Robotics Welding (CCRW) group at General Motors. The current strategy is to use globally common equipment through predetermined global suppliers. The GM facilities in China, which are jointly owned with non-GM entities, believe that a local sourcing strategy would reduce lead times, transportation costs and increase the level of nearby service and support. These factors are catalyst for GM to reevaluate the current global common strategy. This thesis will provide an overview of the CCRW organization and discuss how the sourcing strategy has evolved through globalization. Due to the large variety of production tooling, this thesis will narrow the focus to two case studies: the first being a Main Control Panel (MCP) and the second being a weld controller. These case studies are used as a method to determine the pros and cons of the current sourcing strategy, where the MCP is a highly integrated design maintained by CCRW HQ and the weld controller is a "blackbox" which CCRW defines the functional specifications and procures "off the shelf' from a predetermined global supplier. Through local China visits, literature review and preliminary cost assessments, it was determined that while local sourcing may be a viable option for both the MCP and weld controller, there is not enough determinate information to commit to a sourcing change in the case of the Main Control Panel. From onsite visits to potential MCP option suppliers in China, it appears that likely "local" arrangements exists, however, further company analysis and validation will need to be conducted to adopt the change.
(cont.) As for the weld controller, the local product variation with the current global supplier (based locally) is recommended and was validated by CCRW weld engineers by the completion of this internship. I The term "Local" will be used throughout this thesis to refer to "China," meaning solutions that are derived from internal to China.
by Natalie Chouinard.
M.B.A.
S.M.
12
Sousa, Rennaly Patricio. „Impact assessment of incentive program to castor production in Cearà state“. Universidade Federal do CearÃ, 2014. http://www.teses.ufc.br/tde_busca/arquivo.php?codArquivo=13031.
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Conselho Nacional de Desenvolvimento CientÃfico e TecnolÃgicoThe present study aimed to evaluate the level of technological adoption in castor production in Cearà and the impact of the incentive offered to produce castor on the generation of employment and income of family farmers included in that program. To this end, we selected a sample with a group of producers of castor and a second group of non-producing of castor in order to make comparisons. The research was based on primary data, obtained through the application of semi-structured interviews in the municipalities of Santa QuitÃria, Monsenhor Tabosa and Boa Viagem. As methodology, the following techniques were used descriptive statistics, the construction of the Technology Adoption Index (INATEC), analysis of variance, analysis of logistic regression and propensity score matching. The main results showed a low level of technology adoption by producers. They also revealed that the incentive to produce castor generated significant impact on total farm income, farm income per hectare and total employment of the producers of this cultivar. However, are not observable impacts on the level of employment per hectare.
O estudo aqui apresentado teve como objetivo principal avaliar o nÃvel de adoÃÃo tecnolÃgica na produÃÃo de mamona no Estado do Cearà e os impactos do programa de incentivo à produÃÃo de mamona sobre a geraÃÃo de emprego e renda dos agricultores familiares. Para tanto, selecionou-se uma amostra composta por dois grupos: um primeiro grupo de produtores de mamona e um segundo grupo de nÃo produtores de mamona, a fim de estabelecer comparaÃÃes e anÃlises de impacto. A pesquisa baseou-se em dados primÃrios, por meio da aplicaÃÃo de entrevistas semiestruturadas nos municÃpios de Santa QuitÃria, Monsenhor Tabosa e Boa Viagem. Como metodologia, o estudo fez uso de mÃtodos de estatÃsticas descritivas, construÃÃo do Ãndice de AdoÃÃo de Tecnologias (INATEC), anÃlises de variaÃÃo, anÃlise de regressÃo logÃstica e mÃtodo Propensity Score Matching. Os principais resultados obtidos revelam um baixo nÃvel de adoÃÃo de tecnologias por parte dos produtores. Revelam ainda que o programa de incentivo à produÃÃo de mamona gerou impacto significativo sobre a renda agrÃcola total, renda agrÃcola por hectare e emprego total dos produtores desta cultivar. Contudo, nÃo sÃo observÃveis os impactos sobre o nÃvel de emprego por hectare.
13
Malherbe, Johannes Louw. „Scheduling program based on the theory of constraints“. Thesis, Stellenbosch : Stellenbosch University, 2003. http://hdl.handle.net/10019.1/53581.
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Thesis (MEng)--Stellenbosch University, 2003.ENGLISH ABSTRACT: The goal of this thesis is to provide a stepping-stone for the design and development of a software package that implements the Goal System Algorithm, based on the Theory of Constraints (TOC). This includes the complete description and explanation of the Goal System Algorithm (GS), as well as the partial implementation of this algorithm using Microsoft Access as a Database Management System (DBMS) and Microsoft Visual C++ as programming language. The main development effort was put into the development of a scheduling algorithm and the implementation of a data structure that lies at the core of this algorithm. The reason for the development of such a package is that it will aid a production manager, working in a small to medium size job-shop, in generating a schedule for production that will increase throughput, while simultaneously reducing both inventory and operating expense thereby generating profits and cash flow. With regard to this thesis and the overall project goal the following have been achieved. 1. The complete project has been researched, scoped and each step has been explained. 2. The complete program structure has been defined and broken into two separate modules; the Data Mining and Conversion Module and the TOC Scheduling Algorithm. 3. The database containing all the MRP data necessary for scheduling has been designed and implemented using a MS Access database with an ODBC connection. An ODBC connection to the database was used so that a smooth transmission to other database management systems can be made. 4. The TOC Scheduling Algorithm has been developed and the following have been implemented: • A basic user interface has been created for the insertion of all the user input and to display the constraint schedule. • A data structure called a linked list has been developed and used to store the scheduling data in memory. • The complete GS algorithm had been researched and explained. • The GS algorithm has been and implemented and tested up to the point where it schedules the constraint. • The pseudo code for the part of the GS algorithm that was not implemented has been documented and included in this report. More development needs to be done and a proper Graphical User Interface must also be created to complete this project, but after completion a Toe software package will exist that is completely unique in South Africa and the market potential for this package will be considerable.
AFRIKAANSE OPSOMMING: Die doel van hierdie tesis is om die grondslag te skep vir die ontwerp en ontwikkeling van 'n sagteware pakket wat Goldratt se Doel Sisteem Algoritme, gebasseer op die 'Theory of Constraints', implementeer. Dit sluit die gedetaileerde beskrywing van die Doel Sisteem Algoritme in en 'n gedeeltelike implementasie van die algortime, deur gebruik te maak van 'n Microsoft Access databasis as databasis bestuur sisteem en Microsoft Visual C++ as 'n programerings taal. Die hoof klem is gelê op die ontwikkeling van die skedulerings algortime en die implementasie van die strukture wat deel van die kern uitmaak van die algoritme. Die hoof rede vir die ontwikkeling van so 'n pakket is sodat dit 'n produksie bestuurder van 'n klein to medium grootte vervaardigings besigheid sal help om 'n skedule vir produksie the genereer wat die vloer se deurset sal verhoog, terwyl dit voorraad en operasionele kostes sal verlaag. Met ander woorde dit sal die besigheid help om meer geld te maak huidiglik en in die toekoms. Met betrekking tot die tesis en die algehele projek doel is die volgende bereik: 1. Die hele projek is nagevors, uit een gesit en verduidelik. 2. Die hele program struktuur is gedefinieer en opgebreek in twee aparte modules; nl. die 'Data Mining and Conversion Module' en die 'TOC Scheduling Algorithm'. 3. Die databasis wat al die nodige MRP inligting bevat wat benodig word vir skedulering is ontwerp en geimplementeer deur gebruil te maak van 'n MS Access databasis met 'n ODBC konneksie. Daar is van 'n ODBC konneksie gebruik gemaak sodat as die nodig is, daar sonder enige moeite na ander databasis bestuurs sisteme oorgeskakel kan word. 4. Die 'TOC Scheduling Algorithm' is onwikkel en die volgende is geimplementeer. • A basisse gebruikers vlak is ontwikkel sodat al die nodig invoer data in die program ingevoer kan word. • 'n Geskakelde lys is ontwikkel en gebruik as die data struktuur om al die skedulerings informasie in geheue te stoor. • Die Doel Sisteem algorimte is in sy geheel verduidelik en gedokumenteer. Die Doel Sisteem algoritme is geïmplementeer tot op die punt waar dit die primêre bottelnek skeduleer. • Die pseudo kode vir die deel van die GS algoritme wat nie geimplementeer is nie is uitgelê in ingesluit as deel van die verslag. Verdere ontwikkeling word nog benodig en 'n beter gebruikers vlak moet nog geskep word om die projek te finaal afte handel, maar na dit gedoen is sal daar 'n TOe skedulering pakket bestaan wat heeltemal uniek is tot Suid-Afrika en 'n groot mark potensiaal sal hê.
14
Chew, Ryan W. (Ryan Wayne). „Process improvements during production ramp-up“. Thesis, Massachusetts Institute of Technology, 2007. http://hdl.handle.net/1721.1/39589.
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Thesis (M.B.A.)--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, 2007.Includes bibliographical references (p. 62-63).
Raytheon Company is currently ramping up production radars for a fighter aircraft. This product is doubling production in the next year to meet customer demand; however, the program has not been able to meet the current demand schedule for the radar. In addition, the cost of producing this radar is over the budgeted amount. Management is pushing cost and cycle time reductions on every piece of the radar, a task the team is diligently working to accomplish. The main focus of this project is one sub-assembly of the AESA radar system, the "coldwall", a heat sink that also provides the base structure by which all of the radar sensing equipment is connect to. The coldwall also acts as a heat sink, reducing the internal temperature of the radar assembly, thereby improving the fidelity of the radio frequency signal and longevity of the system itself. Currently, the cycle time to manufacture the coldwall is on average twice the planned cycle time and the cost is three times the budgeted amount. This thesis provides a case in which a process improvement investigation takes place under tight budgetary and time constraints in ramp-up mode.
(cont.) The goal of this thesis is to develop a case for accurate and complete data collection to help future process improvement decisions. The act of focusing this investigation was cumbersome due to the lack of data available on the process. In addition, the case study shows a situation where proactive issue resolution and active waste elimination could alleviate the stress incurred by cost over runs and delayed product shipments.
by Ryan W. Chew.
S.M.
M.B.A.
15
Marcondes, Carlos Henrique Tiezzi 1965. „E-procurement : non-production purchase : an industry analysis & an implementation plan“. Thesis, Massachusetts Institute of Technology, 2000. http://hdl.handle.net/1721.1/9148.
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Thesis (S.M.M.O.T.)--Massachusetts Institute of Technology, Sloan School of Management, Management of Technology Program, 2000.Includes bibliographical references (leaf 104) and index.
My thesis covers the electronic procurement currently existing, mainly the nonproduction purchase part of it. Since all companies make non-production purchase, this thesis reaches different sectors of the industry. Non-production procurement includes maintenance, repair, and operation, common called MRO, as well as service and outsource purchase. This work is also recommended for those who are interested in a general e-procurement, in an integrated supply-chain management over the Internet, in a Just in Time application, in a vertical and virtual integration, and in a business-to-business e-commerce application. My main goal is to help those who are interested in using e-procurement understand what the industry is doing, what kind of technology is available, and provide a model for implementation. In order to achieve those goals this work is divided into two main parts: An Industry Analysis and an Implementation Plan. The industry analysis covers the three major software providers in the actual US market: Ariba, Commerce One, and Oracle. The work is illustrated with a case study in order to provide a better understanding of the benefits and challenges faced by those who are deploying e-procurement. The implementation plan focuses on a strategy to be followed in order to install eprocurement in the service industry. A Brazilian bank, Itau, is used as an example to develop the plan, since Itau is a large corporation with national presence in South America.
by Carlos Henrique Tiezzi Marcondes.
S.M.M.O.T.
16
Schragger, Benjamin Jay. „Producing a commercially viable video feature production in an academic setting“. Instructions for remote access. Click here to access this electronic resource. Access available to Kutztown University faculty, staff, and students only, 1988. http://www.kutztown.edu/library/services/remote_access.asp.
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Gaustad, Gabrielle G. „Stochastic methods for improving secondary production decisions under compositional uncertainty“. Thesis, Massachusetts Institute of Technology, 2009. http://hdl.handle.net/1721.1/55075.
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Thesis (S.M.)--Massachusetts Institute of Technology, Computation for Design and Optimization Program, 2009.Cataloged from PDF version of thesis.
Includes bibliographical references (p. 77-80).
A key element for realizing long term sustainable use of any metal will be a robust secondary recovery industry. Secondary recovery forestalls depletion of non-renewable resources and avoids the deleterious effects of extraction and winning (albeit by substituting some effects of its own). For most metals, the latter provides strong motivation for recycling; for light metals, like aluminum, the motivation is compelling. Along aluminum's life-cycle there are a variety of leverage points for increasing the usage of secondary or recycled materials. This thesis aims to improve materials decision making in two of these key areas: 1) blending decisions in manufacturing, and 2) alloy design decisions in product development. The usage of recycled aluminum in alloy blends is greatly hindered by variation in the raw material composition. Currently, to accommodate compositional variation, firms commonly set production targets well inside the window of compositional specification required for performance reasons. Window narrowing, while effective, does not make use of statistical sampling data, leading to sub-optimal usage of recycled materials. This work explores the use of stochastic programming techniques which allow explicit consideration of statistical information on composition. The computational complexity of several methods is quantified in order to select a single method for comparison to deterministic models, in this case, a chance-constrained model was optimal. The framework and a case study of cast and wrought production with available scrap materials are presented.
(cont.) Results show that it is possible to increase the use of recycled material without compromising the likelihood of batch errors, when using this method compared to conventional window narrowing. The chance-constrained framework was then extended to improving the alloy design process. Currently, few systematic methods exist to measure and direct the metallurgical alloy design process to create alloys that are most able to be produced from scrap. This is due, in part, to the difficulty in evaluating such a context-dependent property as recyclability of an alloy, which will depend on the types of scraps available to producers, the compositional characteristics of those scraps, their yield, and the alloy itself. Results show that this method is effective in, a) characterizing the challenge of developing recycling-friendly alloys due to the contextual sensitivity of that property; b) demonstrating how such models can be used to evaluate the potential scrap usage of alloys; and (c) exploring the value of sensitivity analysis information to proactively identify effective alloy modifications that can drive increased potential scrap use.
by Gabrielle G. Gaustad.
S.M.
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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.
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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
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Lynch-Dalgleish, Tamara. „The design, production and evaluation of a computer-based multimedia learning program“. Thesis, National Library of Canada = Bibliothèque nationale du Canada, 2000. http://www.collectionscanada.ca/obj/s4/f2/dsk1/tape3/PQDD_0020/MQ54251.pdf.
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Pearce, William S. „Management of microcircuit obsolescence in a pre-production ACAT-ID missile program“. Thesis, Monterey, Calif. : Springfield, Va. : Naval Postgraduate School ; Available from National Technical Information Service, 2002. http://library.nps.navy.mil/uhtbin/hyperion-image/02Dec%5FPearce.pdf.
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Thesis (M.S. in Program Management)--Naval Postgraduate School, December 2002.Thesis advisor(s): David F. Matthews, Amy J. Grover. Includes bibliographical references (p. 81-86). Also available online.
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SILVEIRA, MAIRA LEAO DA. „THE (IN) SUSTAINABILITIES OF THE NATIONAL PROGRAM OF BIODIESEL PRODUCTION AND USE“. PONTIFÍCIA UNIVERSIDADE CATÓLICA DO RIO DE JANEIRO, 2012. http://www.maxwell.vrac.puc-rio.br/Busca_etds.php?strSecao=resultado&nrSeq=20944@1.
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PONTIFÍCIA UNIVERSIDADE CATÓLICA DO RIO DE JANEIROCOORDENAÇÃO DE APERFEIÇOAMENTO DO PESSOAL DE ENSINO SUPERIOR
PROGRAMA DE SUPORTE À PÓS-GRADUAÇÃO DE INSTS. DE ENSINO
Esta pesquisa busca fazer uma caracterização e análise do Programa Nacional de Produção e Uso de Biodiesel (PNPB), enfocando seu aspecto ambiental e sobretudo social através do Selo Combustível Social, ressaltando o questionamento do discurso da sustentabilidade sobre o qual se baseia o programa, percebendo até que ponto este combustível é sustentável ambientalmente e socialmente. Para dar conta analisa a construção do imaginário social de desenvolvimento e desenvolvimento sustentável presentes no Programa e as exigências e adaptações exigidas no espaço no qual esta produção está inserida, parte assim para análise de como vem se estruturando a produção no espaço agrário tanto na realidade do agronegócio como na realidade da agricultura familiar através do Selo Combustível Social, percebendo a matéria prima que vem sobressaindo e os reflexos no espaço frutos de sua produção levando ao questionamento da sustentabilidade ambiental. Quanto à questão da sustentabilidade social do programa, a região de Irecê, na Bahia, foi escolhida por representar uma das áreas de investimento da Petrobras, empresa que mais vem investindo na questão social do PNPB e por estar localizada no Semi Árido, localidade onde a agricultura familiar ainda tem grande peso. Objetiva assim embasar a discussão das repercussões do tipo de desenvolvimento atual no espaço que se expressa na contradição da produção de Biodiesel com o discurso da sustentabilidade, apontando alguns limites e dificuldades encontradas.
This research seeks to make a characterization and analysis of the National Program for Production and Use of Biodiesel (PNPB), focusing its environmental aspect and social aspect through the Social Fuel Seal, emphasizing questioning the sustainability discourse upon which the program is based, realizing the extent to which this fuel is environmentally and socially sustainable. Analyzes to account for the construction of the social imaginary of development and sustainable development in the Program and present the requirements and adjustments required in the space in which this production is included, so for the analysis of how the production is being structured in agrarian space in both the reality of agribusiness as the reality of family farming through the Social Fuel Seal, realizing the raw material that is protruding and reflections within the fruits of their production leading to questions of environmental sustainability. On the issue of social sustainability of the program, the region of Irecê, Bahia, was chosen because it represents an investment in the areas of Petrobras, a company that is investing more in social issues PNPB and for being located in the semi arid region, where the location family farms still have great weight. Objective as well base the discussion of the implications of the type of current development in space that is expressed in the production of Biodiesel contradiction with the sustainability discourse, pointing out some limitations and difficulties.
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Lakzadeh, Pardis. „Economic evaluation of a novel homestead food production program in rural Cambodia“. Thesis, University of British Columbia, 2016. http://hdl.handle.net/2429/57982.
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Background: For over 20 years Helen Keller International has implemented homestead food production (HFP) programs in developing countries to improve the nutritional status of women and children, household food security and income. The HFP model encourages year-round food production through home gardens and animal husbandry. Although, HFP has been successful in increasing household food production, economic assessment of this program has been limited. In order for program implementers to allocate limited resources efficiently, there is a need for a rigorous economic assessment of HFP programs.
Objective: To (1) identify factors associated with household income in rural, Cambodia, (2) to systematically measure and monetize food production from gardens and fishponds, and explore the cost-effectiveness of HFP in Cambodia in a cost-benefit analysis (CBA), using data from a randomized control trial (RCT), (3) explore the sensitivity of the CBA results and alternative scenarios for program implementation.
Methods: Factors associated with household income, were examined using a generalized linear mixed model at a univariate and multivariate level. Food production was estimated from multiple longitudinal data sources. The program benefits (food production) were monetized using local village market values, while costs were determined through a micro-costing analysis. A CBA was carried out from the project perspective and the net monetary benefit in each study arm was estimated and compared to control households. Lastly, the sensitivity of the CBA results was tested in a one-way sensitivity and scenario analysis.
Results: Assessment of baseline household income revealed that in rural Cambodia fishponds and pigs were associated with income. Households in the HFP program produced more food, relative to the control. The results from CBA show that home gardens are a cost-effective HFP intervention. The results from the scenario analysis suggest that the addition of fishponds to gardens may also be cost-effective if implemented outside a RCT.
Conclusion: This study has developed tools to systematically measure and monetize food production from HFP, while finding that establishment of home gardens is a cost-effective use of resources.Medicine, Faculty of
Population and Public Health (SPPH), School of
Graduate
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Schuchman, Nina Shayne. „Environmental and economic tradeoffs in building materials production in India“. Thesis, Massachusetts Institute of Technology, 2014. http://hdl.handle.net/1721.1/90061.
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Thesis: S.M. in Technology and Policy, Massachusetts Institute of Technology, Engineering Systems Division, Technology and Policy Program, 2014.Cataloged from PDF version of thesis.
Includes bibliographical references (pages 87-91).
The current and projected growth of India's economy and population will continue to lead to increased demand for buildings and infrastructure, and there is a real need to consider what this increase means in terms of natural resource depletion, air pollution, contributions to global warming through greenhouse gas emissions during production and transport, and energy demands to be placed on an already strained energy network. Fired-clay bricks are the most commonly used building material in India, but recently, masonry units that don't require firing (stabilized bricks) have penetrated the market. There has been an exploration of the amalgamation of traditional earthen building materials combined with chemical binders. While these masonry materials are often considered superior in terms of environmental impact due to their lack of firing in visceral, black smoke-producing kilns, as well as their typically local (even on-site) production, there has been limited research into their actual environmental footprint. This thesis establishes models for robust analysis, and analyzes the environmental and cost tradeoffs associated with various building materials' choices to evaluate the hypothesis that the optimal materials choice is heavily dependent on the local soil composition and industrial ecosystem. That is, there is likely not one answer to the question of which is better: traditional fired clay bricks (red bricks) or alternative, cementitious materials, and instead, decision making must be assisted by analysis of the overall environmental impact of the upstream production and transportation of each material. Because of the variety of conditions throughout India, there is a need for this sort of tool to perform these analyses to determine the conditions under which different building materials have better environmental and/or economic outcomes. The analyses performed in this thesis conclude that there is the potential for alternative materials to break into the market, particularly in areas where red bricks are not produced on an industrial scale.
by Nina Shayne Schuchman.
S.M. in Technology and Policy
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Yu, Zhao (Zhao Amy). „Pantheon : visualizing the structure and dynamics of global cultural production“. Thesis, Massachusetts Institute of Technology, 2014. http://hdl.handle.net/1721.1/91405.
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Thesis: S.M., Massachusetts Institute of Technology, School of Architecture and Planning, Program in Media Arts and Sciences, 2014.53
Cataloged from PDF version of thesis.
Includes bibliographical references (pages 72-75).
Introduction: In this thesis, I address the challenge of measuring and visualizing global cultural production by presenting a carefully curated dataset containing more than eleven thousand culturally relevant biographies including all countries in the world and much of recorded history. All of these biographies are mapped to a cultural domain using a normalized three level hierarchical classification that we introduce (see Appendix). Also, 95% of all biographies are mapped to a country of birth and 100% to a year of birth. The biographies in this dataset represent the entire set of biographies with a presence in more than 25 language editions of Wikipedia (as of May 2013), representing the largest curated dataset of global cultural production available to date. To quantify the relative importance of each biography, the dataset also incorporates information on the number of languages in which each biography has a presence and the number of page views received by each Wikipedia page in each language. Using this dataset, we developed a visualization engine, Pantheon, to reveal the patterns within the data and open the data for exploration by audiences around the globe. This work aims to motivate future research exploring the quantitative study of historical cultural patterns by allowing audiences to visualize cultural production and highlighting the potential of human achievements.
by Amy (Zhao) Yu.
S.M.
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Fensterheim, Devin Robert. „Knowledge production at the global frontier : the case of China“. Thesis, Massachusetts Institute of Technology, 2009. http://hdl.handle.net/1721.1/53057.
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Thesis (S.M. in Technology and Policy)--Massachusetts Institute of Technology, Engineering Systems Division, Technology and Policy Program, 2009.Includes bibliographical references (p. 127-132).
China is increasingly seen as a participant in the global knowledge economy, with recent studies have highlighted the rising number of scientists and engineers educated in Chinese institutions of higher education, and the growing funding allocated to the production of knowledge. Question remains as to whether China is producing scientific knowledge at the global frontier, and whether the production of scientific research in China is globally competitive. Since the end of the Cultural Revolution in 1976, Chinese policymakers have distinguished scientific modernization as essential to long-term economic prosperity and endogenous growth, and, more recently, to addressing the modern socioeconomic and environmental challenges confronting China. The State Council, largely through the Ministry of Science and Technology and Ministry of Education, have invested heavily in universities and research institutes to promote the development of world-class research. To evaluate the state of scientific innovation in China, three bibliometric analyses are conducted. First, United States patents with full or partial Chinese ownership are used to provide a measure of high-impact industrial and applied innovation. Second, all SCI-indexed articles affiliated with at least one Chinese institution are evaluated. Finally, articles published in the journal Nature and subject-specific Nature journals are used as a proxy for high-impact scientific research. The results suggest that while the majority of Chinese scientific research is of low impact, that frontier research is becoming increasingly common in a growing number of Chinese institutions.
(cont.) There is evidence of a learning effect, suggesting that China engages in international consortia to participate in frontier research and uses the resulting experience to independently produce frontier knowledge, particularly in the fields of genetics and nanotechnology.
by Devin Robert Fensterheim.
S.M.in Technology and Policy
26
Tsai, Mimi L. „Decoding the secret to faster drug production through simulation modeling“. Thesis, Massachusetts Institute of Technology, 2016. http://hdl.handle.net/1721.1/107506.
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Thesis: M. Eng. in Logistics, Massachusetts Institute of Technology, Supply Chain Management Program, 2016.Cataloged from PDF version of thesis.
Includes bibliographical references (page 40).
For many manufacturing facilities, process improvement efforts are a luxury when faced with heightened competitive pressures and a fast-paced work environment where fires are constantly being fought. This need for speed is even more important for startup companies who are racing against time to get their product to the market. Continuous improvement and Lean projects typically span from trial-and-error experiments to changes based on lengthy analyses. Biotech startup Company XYZ has felt the effects of these forces and launched a new effort to improve its operations via continuous improvement and Lean, ultimately reducing costs and improving productivity of operations. This thesis examines one example of a process improvement effort at Company XYZ's pre-clinical manufacturing facility. This project involved characterizing the cycle time and process flow, leading to targeted actions to increase the throughput and reduce the amount of time and effort to manufacture their drugs. Tools and ideas from Lean and Six Sigma were applied and a recommendation and next steps were presented to the company. This thesis also provides a broader demonstration of how such continuous improvement efforts can fit into the pharmaceutical and biotechnology industries.
by Mimi L. Tsai.
M. Eng. in Logistics
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Engert, Christoph G. „A C. elegans histone methyltransferase promotes spermatocyte gene expression, spermatid production and fertility“. Thesis, Massachusetts Institute of Technology, 2017. http://hdl.handle.net/1721.1/112432.
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Thesis: Ph. D., Massachusetts Institute of Technology, Computational and Systems Biology Program, 2017.Cataloged from PDF version of thesis.
Includes bibliographical references.
To better understand the tissue-specific regulation of chromatin state in cell-fate determination and development, we defined the tissue-specific expression of all 36 lysine methyltransferase (KMT) genes by endogenous mRNA detection in C. elegans. We found that most KMTs are expressed in only one or two tissues and that the germline is the tissue with the most general KMT expression. We discovered that the germline-expressed C. elegans ortholog of mammalian PRDM9, SET-1 7, promotes fertility through gene regulation in primary spermatocytes. SET-17 drives transcription of spermatocyte-specific genes from four genomic clusters to promote spermatid production. SET-1 7 is concentrated in stable, chromatin-associated nuclear foci at actively transcribed gene clusters, which we term spermatocyte transcription bodies. Our results identify the spatially restricted function of a PRDM9 ortholog in spermatocyte transcription and we propose that the spatial organization of chromatin factors might be a conserved mechanism in tissue-specific control of transcription.
by Christoph G. Engert.
Ph. D.
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Chen, Emily M. Eng Massachusetts Institute of Technology. „Manufacturing risk assessment and uncertainty analysis for early stage (Pre-phase III) pharmaceutical drug production“. Thesis, Massachusetts Institute of Technology, 2017. http://hdl.handle.net/1721.1/112872.
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Thesis: M. Eng. in Supply Chain Management, Massachusetts Institute of Technology, Supply Chain Management Program, 2017.Cataloged from PDF version of thesis.
Includes bibliographical references (pages 40-41).
Supply chains in the pharmaceutical industry are growing increasingly more complex and expanding their geographic reach both in manufacturing production and to the end consumer, the patient. Physical development, manufacturing and distribution of these drugs, both of biologics and small molecules, is extremely technical in science and processes. Additionally, the industry is highly regulated with nuanced requirements that vary by country of origin and consumption, adding complexity to the drug development process. For these reasons, companies are pushing for longer range planning and forecasting of their drug pipelines, beginning the process earlier for drugs that are in pre-clinical phases of production in order to adequately plan for capacity in manufacturing and distribution. Working with data on a number of small molecules across different lines of treatment in the drug development pipeline, a discrete event simulation model was developed to simulate production quantity outputs given varying levels of stochastic parameters such as drug dosage, treatment duration, patient population, patient compliance, and competitive market share. Results from the simulations were used to assess manufacturing capacity risk given capacity and resource capabilities. The outputs of the model built in this thesis can be used to better inform capacity planning decisions for these early stage molecules.
by Emily Chen.
M. Eng. in Supply Chain Management
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Lennox, Kevin Michael. „Implementing pull production within an aerospace assembly operation“. Thesis, Massachusetts Institute of Technology, 2006. http://hdl.handle.net/1721.1/37241.
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Thesis (M.B.A.)--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, 2006.Includes bibliographical references (leaf 42).
This thesis presents a detailed analysis of lean implementation at Hamilton Sundstrand, a global supplier of technologically advanced aerospace and industrial products. The main objective of the internship was to convert from a push system, where orders are expedited and scheduled at multiple points in the process, to a pull system driven by a bin size or finished goods supermarket. Some of the key issues addressed include system design for highly variable processes, experimentation with various forms of Kanban, and the use of value stream mapping as a change management tool. This thesis is divided into two separate projects, both directly related to pull production. The first assignment was to redesign a subassembly process to improve fulfillment at the downstream assembly operation. Broader in scope, the second task involved implementation of a constant work-in-process scheduling system or CONWIP. Each project was designed and executed through value stream mapping and continuous improvement. The following discussion focuses on both strategic and tactical challenges of lean transformation because analysis and implementation were equally important throughout the internship.
by Kevin Michael Lennox.
S.M.
M.B.A.
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Subramanian, Nima. „Lean manufacturing in a semiconductor environment : production leveling“. Thesis, Massachusetts Institute of Technology, 2007. http://hdl.handle.net/1721.1/39686.
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Thesis (M.B.A.)--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, 2007.Includes bibliographical references (p. 60-61).
Intel Corporation's Fab17 located at Hudson, MA underwent a large scale manufacturing ramp-up, increasing its production volume by over 50%. As a result of this manufacturing ramp-up, the factory is faced with various capacity issues. These capacity issues along with current work-in-progress inventory (WIP) management strategies lead to an unbalanced inventory flow within the factory. The unbalanced WIP flow results in wafers accumulating in front of certain operations/areas. This WIP accumulation or "WIP bubbles" creates unexpected demand for the various resources on the shop floor, putting an undue strain on them. This strain is felt the most in the bottleneck area. The objective of this project is to develop a sustainable solution methodology to alleviate the strain on the bottleneck. The scope of this project falls under Fab 17's lean manufacturing organization, known as the manufacturing excellence (mX) group, and, the analysis used in this internship utilizes lean manufacturing concepts and principles. The solution methodology analyzes the wafer fabrication process in layers rather than in segments. This approach clarifies WIP movement and identifies problem areas that cause WIP bubbles. Further, the thesis applies the concept of production leveling to wafer fabrication in order to alleviate (and eliminate) the pressure on the bottleneck.
by Nima Subramanian.
S.M.
M.B.A.
31
Lindsey, Christine M. (Christine Marie) 1977. „Critical process parameter determination during production start-up“. Thesis, Massachusetts Institute of Technology, 2004. http://hdl.handle.net/1721.1/34741.
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Thesis (S.M.)--Massachusetts Institute of Technology, Dept. of Chemical Engineering; and, (M.B.A.)--Massachusetts Institute of Technology, Sloan School of Management; in conjunction with the Leaders for Manufacturing Program at MIT, 2004.Includes bibliographical references (p. 83-84).
Production start-up data is consistently utilized in a reactive manner during the initial stages of a product's lifecycle. However, if proactive information systems are created before full scale production starts, ramp-up cycles can be shortened considerably. This project attempts to develop a framework for analyzing process data quickly and efficiently during a new product start-up in order to provide information for the short term goals relating to attaining stable processes as well as provide guidance on long term handles for process improvement. First, a summary of previous literature regarding start-up process data as well as typical stable process data usage will be presented. This will provide adequate background for evaluating typical gaps present during production ramp-up. Then, solutions to these gaps will be discussed in order to develop tools for better data analysis in shorter periods of time. These methods will then be applied to a case study involving the. new production of Kodak's DCS Pro 14N digital camera. The Kodak Professional DCS Pro 14N was an amazing leap in technology: a camera with double the resolution for roughly half the price of any product available. Unfortunately, it soon became apparent that the original demand estimates were grossly underestimated, straining original resource allocations. Manufacturing struggled to start and was already a year behind in backorders. With over 1.500 process attributes collected on each camera, the key drivers of quality had yet to be determined. The surrounding circumstances made the quick analysis of start-up data vital to effective resource management and yield improvement of the camera.
(cont.) After using the new process modeling framework and modified control techniques on the example Kodak case, two additional topics will be discussed. First, the many classifications of return on investment in proactive start-up data analysis will be presented. Ranging from waste minimization to higher customer satisfaction, these incentives justify early preparation for start- up data analysis. Finally, future areas of study will be recommended to augment the findings within the thesis.
by Christine M. Lindsey.
M.B.A.
S.M.
32
Fajkus, Marek. „Návrh změn výrobního systému a inovací produktu pro zvýšení konkurenceschopnosti podniku“. Master's thesis, Vysoké učení technické v Brně. Fakulta podnikatelská, 2021. http://www.nusl.cz/ntk/nusl-442898.
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The diploma thesis deals with the issue of increasing the competitiveness of the company with a focus on product and production. It compares theoretical knowledge, analyzes the current situation of the selected company, identifies the possibility of introducing innovation within the product portfolio and production system and proposes changes.
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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.
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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.
34
Montgomery, Justin B. (Justin Bruce). „Characterizing shale gas and tight oil drilling and production performance variability“. Thesis, Massachusetts Institute of Technology, 2015. http://hdl.handle.net/1721.1/98600.
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Thesis: S.M. in Technology and Policy, Massachusetts Institute of Technology, Engineering Systems Division, Technology and Policy Program, 2015.Cataloged from PDF version of thesis.
Includes bibliographical references (pages 137-147).
Shale gas and tight oil are energy resources of growing importance to the U.S. and the world. The combination of horizontal drilling and hydraulic fracturing has enabled economically feasible production from these resources, leading to a surge in domestic oil and gas production. This is providing an economic boon and reducing reliance on foreign sources of energy in the U.S., but there are still a number of environmental, economic, and technical challenges that must be overcome to unlock the resource's full potential. One key challenge is understanding variability in individual well performance-in terms of both drilling time (a key driver of well cost) and well productivity-which has led to greater than anticipated economic risk associated with shale gas and tight oil development. Thus far, more reliable forecasting has remained elusive due to its prohibitive cost and the poorly understood nature of the resource. There is an opportunity to make use of available drilling and production data to improve the characterization of variability. For my analysis, I use publicly-available well production data and drilling reports from a development campaign. In order to characterize variability, I use a combination of graphical, statistical, and data analytics methods. For well productivity, I use probability plots to demonstrate a universality to the distribution shape, which can accurately be described as lognormal. Building on this distributional assumption, I demonstrate the utility of Bayesian statistical inference for improving estimates of the distribution parameters, which will allow companies to better anticipate resource variability and make better decisions under this uncertainty. For drilling, I characterize variability in operations by using approximate string matching to compare drilling activity sequences, leading to a metric for operational variability. Activity sequences become more similar over time, consistent with the notion of standardization. Finally, I investigate variability of drilling times as they progress along the learning curve, using probability plots again. I find some indication of lognormality, with implications for how learning in drilling should be measured and predicted. This thesis emphasizes the relevance of data analytics to characterizing performance variability across the spectrum in shale gas and tight oil. The findings also demonstrate the value of such an approach for identifying patterns of behavior, estimating future variability, and guiding development strategies.
by Justin B. Montgomery.
S.M. in Technology and Policy
35
Barr, Thomas W. „Development of a graphics interface for the Savannah River control program "Savres"“. Thesis, Georgia Institute of Technology, 1992. http://hdl.handle.net/1853/20978.
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36
Alexander, Louis Cadmon. „PROSIM VII an enhanced production simulation model“. Ohio : Ohio University, 1992. http://www.ohiolink.edu/etd/view.cgi?ohiou1171474745.
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Smith, Stephen E. „Process management applications in biopharmaceutical drug production“. Thesis, Massachusetts Institute of Technology, 2011. http://hdl.handle.net/1721.1/66048.
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Thesis (M.B.A.)--Massachusetts Institute of Technology, Sloan School of Management; and, (S.M.)--Massachusetts Institute of Technology, Engineering Systems Division; in conjunction with the Leaders for Global Operations Program at MIT, 2011.Cataloged from PDF version of thesis.
Includes bibliographical references (p. 71-73).
Genzyme's manufacturing and supply chain organization is responsible for the production and delivery of medically necessary medicines for patients with rare diseases around the world. Because of the nature of the products produced at Genzyme, a lapse in operational performance has societal as well as economic impacts. Therefore increased understanding of the complex production systems at Genzyme is helpful to reduce risk and improve performance. This thesis is an analysis of a system of two critical production processes at Genzyme. These processes are studied collectively because shared resources make them a tightly coupled system. The research is presented in three sections. The first section explores the current state of the system and explains general performance trends. The second section examines the impact of scheduling complexity arising from shared resources. The third section discusses how process improvement methodologies could be applied at Genzyme. The following conclusions arise from the work conducted for this thesis. First, the performance of the system has declined due to an increase in utilization and an already high level of variability. Second, variability caused by shared resource conflicts can be minimized using new scheduling techniques. And finally, continuous improvement methods are recommended to further reduce variability and increase overall process performance.
by Stephen Smith.
S.M.
M.B.A.
38
Gauthier, Laurent. „Development and use of a database and program package for farm production management“. Thesis, McGill University, 1986. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=74030.
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39
Maeng, Honjae. „An application of technological maturity assessment to ROKAF T-50 aircraft production program“. Thesis, Monterey, Calif. : Springfield, Va. : Naval Postgraduate School ; Available from National Technical Information Service, 2005. http://library.nps.navy.mil/uhtbin/hyperion/05Dec%5FMaeng.pdf.
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40
Raut, Yogendra Y. „Sustainable Bioenergy Feedstock Production Using Long-Term (1999-2014) Conservation Reserve Program Land“. The Ohio State University, 2017. http://rave.ohiolink.edu/etdc/view?acc_num=osu148344789416295.
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Rautenbach, Jeremy Brian. „Improving production yields in bio-pharmaceutical filter media“. Thesis, Massachusetts Institute of Technology, 2017. http://hdl.handle.net/1721.1/111937.
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Thesis: S.M., Massachusetts Institute of Technology, Department of Mechanical Engineering, in conjunction with the Leaders for Global Operations Program at MIT, 2017.Thesis: M.B.A., Massachusetts Institute of Technology, Sloan School of Management, in conjunction with the Leaders for Global Operations Program at MIT, 2017.
Cataloged from PDF version of thesis.
Includes bibliographical references (pages 89-91).
This thesis presents methods to identify sources of variation in rolled goods manufacturing by defining the critical input process parameters, and the application of statistical process control. Sources of variation are prioritized according to a process control hierarchy, and reduced or eliminated through iterative cycles of rapid experimentation. This work emphasizes the value of team work, breaking down the organizational barriers between departments, knowledge sharing and the importance of a scientific approach to problem solving. FilterCo manufactures and assembles filter media catering to the ultrafiltration market growing at ~12% over the next five years. In a high growth scenario, production yield variability presents on-time delivery complications while below target yields drive significant scrap value. As FilterCo seeks to improve product lead time for its customers, while reducing WIP inventory, it must seek to maximize OEE with respect to product yield, equipment performance and availability. The variation identification, reduction and process control methodologies presented in this thesis are demonstrated to advance the goal of reducing production yield variation. The impact of the work has been verified on three filter media grades and have shown ~40% reduction in production yield variation, and rolled throughput yield improvements of ~30%. These improvements on the three membrane grades alone have resulted in an annualized saving equivalent to 60% of the total 2015 scrapped membrane value.
by Jeremy Brian Rautenbach.
S.M.
M.B.A.
42
Feliciano, David Michael. „Exploring barriers, enablers,jJustification and planning methods for total productive maintenance implementation in automated production of commercial airplanes“. Thesis, Massachusetts Institute of Technology, 2015. http://hdl.handle.net/1721.1/98998.
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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 87-90).
The 737 program is currently producing 42 airplanes per month and will increase that production rate to 47 per month by 2017 and 52 per month in 2018 [1] [2]. In order to help meet these rates Boeing plans to increase the amount of automation in the shop that produces front and rear spars for all 737 variants. To mitigate risks associated with increased automation, the automation design team would like to implement an approach to equipment maintenance and operation known as Total Productive Maintenance (TPM). However the justification for TPM was not clear and an implementation strategy did not exist. The focus of this thesis therefore, is to clarify the justification for TPM, understand how TPM could impact the production system, identify the barriers and enablers of TPM implementation at Boeing, and present a TPM implementation plan that will be appropriate and effective for the particular context in which it will be executed. An analysis of current maintenance data and practices, case studies within the current factory, and a qualitative analysis of the future production system suggest that TPM could provide many quantitative and qualitative benefits and that the new production system is a good candidate for TPM. Results from a discrete event model show that TPM poses minimal risk of disrupting the future production system. Results of an employee survey show that the most important factors to successful TPM implementation are related to planning and building support prior to implementation. These findings influenced the design of the TPM implementation plan presented in this thesis, which focuses initially on building support, planning, and training. As the airline industry adopts automated equipment in response to increased competition, TPM may become an important strategy for staying competitive. The multi-pronged analyses demonstrated in this thesis for justifying TPM, the survey method used to understand the company-specific barriers and enablers of TPM, and the method of designing a customized TPM implementation plan based on the insights from these analyses can serve as a general model for implementing TPM within Boeing and within the broader airline industry.
by David Michael Feliciano.
M.B.A.
S.M.
43
Bloomberg, Benjamin Arthur Philips. „Making musical magic live : inventing modern production technology for human-centric music performance“. Thesis, Massachusetts Institute of Technology, 2020. https://hdl.handle.net/1721.1/129893.
Der volle Inhalt der QuelleAnnotation:
Thesis: Ph. D., Massachusetts Institute of Technology, School of Architecture and Planning, Program in Media Arts and Sciences, February, 2020Cataloged from student-submitted PDF of thesis.
Includes bibliographical references (pages 277-285).
Fifty-two years ago, Sergeant Pepper's Lonely Hearts Club Band redefined what it meant to make a record album. The Beatles revolutionized the recording process using technology to achieve completely unprecedented sounds and arrangements. Until then, popular music recordings were simply faithful reproductions of a live performance. Over the past fifty years, recording and production techniques have advanced so far that another challenge has arisen: it is now very difficult for performing artists to give a live performance that has the same impact, complexity and nuance as a produced studio recording. Live performance production technology is now used almost exclusively to recreate studio albums exactly as they were recorded. Recently, this approach has dominated the entertainment industry. In an attempt to reach superhuman levels of perfection and complexity, many elements that make live performances emotionally meaningful for audiences have been given less priority --
or lost altogether. The mission of the work described in this dissertation is to reverse this trend by investigating methods of integrating technology and live music performance in such a way that the technology allows for flexible musical expression, sound and connection to the audience, while still enabling exciting, sophisticated and "magical" production values. This dissertation identifies six objectives for the human-centric design and integration of technology in musical performance, and a methodology to support each objective. These have been developed, refined and tested with artists and performers through a series of ten large-scale projects and approximately 300 individual performances. Through this work, I demonstrate that it is possible to combine high-value production with interactive musical performance.
We are now on the cusp of redefining live musical performance production as an art form just as Sergeant Pepper's Lonely Hearts Club Band redefined studio album production as an art form fifty years ago.
by Benjamin Arthur Philips Bloomberg.
Ph. D.
Ph.D. Massachusetts Institute of Technology, School of Architecture and Planning, Program in Media Arts and Sciences
44
Blake, Thomas B. (Thomas Brock) 1969. „An analysis of engine assembly and component production behavior“. Thesis, Massachusetts Institute of Technology, 1999. http://hdl.handle.net/1721.1/44601.
Der volle Inhalt der QuelleAnnotation:
Thesis (M.B.A.)--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, 1999.Includes bibliographical references (p. 79).
This study analyses the information and material flow through a component manufacturing and turbine engine assembly system. The intent of this work was to understand the inefficiencies associated with the current system, and to propose solutions which would prove valuable to the entire value chain, not only to one manufacturing site. This work was accomplished by identifying a significant problem in the system, developing a model to replicate historical behavior, then developing solutions to improve material and information flow. The shipment rate of engines from the assembly facility was found to follow a "hockey stick" pattern throughout each production quarter (a three-month cycle), meaning that shipments increased exponentially toward the end of each quarter. Shipments were traced back through the component manufacturing facilities, and the exponential increase of component shipments was shown to follow that of assembly shipments. Interviews were primarily used to establish critical variables in the system, and a system dynamics modeling technique was used to generate a model that mirrored historical shipment data. The model was then manipulated to test the sensitivity of specific production variables, and suggestions were made to improve material and information flow. Finally, a component kit plan was developed that added value to the assembly facility by delivering gear products by order number rather than as separate components. Also, the component production facilities benefit by shortening the existing information feedback loop between component manufacturing and assembly and allowing more level production with less variability amplification from the bullwhip effect. Demand Flow Technology is introduced as a means to then affect the entire supply chain, including supporting functions not directly related to manufacturing.
by Thomas M. Blake.
S.M.
M.B.A.
45
Chua, Ian (Ian Hong Leong), und Thomas Heyward. „How to integrate your production and logistics strategy : a new CLSP formulation for a CPG supply chain“. Thesis, Massachusetts Institute of Technology, 2017. http://hdl.handle.net/1721.1/112871.
Der volle Inhalt der QuelleAnnotation:
Thesis: M. Eng. in Supply Chain Management, Massachusetts Institute of Technology, Supply Chain Management Program, 2017.Cataloged from PDF version of thesis.
Includes bibliographical references (pages 47-51).
In manufacturing companies, production strategies prioritize maximizing line efficiency which favors large lot sizes and few setups. On the other hand, logistics strategies prioritize minimizing inventory costs which favors smaller lot sizes and more setups. This thesis provides a new mixed integer linear model formulation that optimizes lot sizes such that both manufacturing efficiency and inventory costs are considered simultaneously. The model solves a multi-machine capacitated lot sizing problem with novel extensions for multi-echelon inventory, transfer costs between inventory echelons, and a multi-echelon product setup hierarchy. The model includes extensions for setuptimes and multiple non-identical machine capabilities. The multi-echelon inventory extension is applicable to firms that contract a third party logistics provider's warehouse to handle seasonal inventory. In this situation, the firm has two inventory holding cost structures and desires to optimize usage of the contracted warehouse. The multi-echelon setup extension is applicable to firms that manufacture products with similar characteristics such that they share a common machine setup cost at a category or aggregated level and a unique setup cost at an item or disaggregated level. When applied to benchmarking manufacturing data, the model demonstrates improved production plans that reduce inventory and setup costs by 30% in some scenarios. This thesis emphasizes how integrating production and logistics strategies can offer significant improvement to any firm's supply chain. In particular, firms with a multi-echelon inventory or setup cost structure can benefit from a model that accounts for these important cost drivers in planning its production.
by Ian Chua and Thomas Heyward.
M. Eng. in Supply Chain Management
46
McIntosh, Timothy Jr (Timothy P. ). „A process for improving long-term production planning“. Thesis, Massachusetts Institute of Technology, 2011. http://hdl.handle.net/1721.1/66058.
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Thesis (M.B.A.)--Massachusetts Institute of Technology, Sloan School of Management; and, (S.M.)--Massachusetts Institute of Technology, Dept. of Aeronautics and Astronautics; in conjunction with the Leaders for Global Operations Program at MIT, 2011.Cataloged from PDF version of thesis.
Includes bibliographical references (p. 67).
This project presents improvements to the business process used to generate the Sikorsky five-year production scheduling plan that is a central coordinating process for company operations. Recommendations will improve the speed and quality of the planning process. The current production planning method leaves Sikorsky at risk of reserving too little capacity to satisfy demand for its most important customers. Additionally, the current method can lead to overproduction of rotorcraft. Both scenarios are very costly to Sikorsky. In the absence of a more data-driven planning approach, shortcomings of the current planning method will only be exacerbated as Sikorsky continues to pursue new customers in emerging markets. Sikorsky may struggle to continue applying judgment-based planning methods to a customer base for which there is little historical information. To investigate the problem, we used interviews, surveys, and lean techniques to study the current state of the five-year planning process. As part of the solution, we developed and applied statistical demand forecasting methods and a more formal process definition. We documented and communicated the new planning process using standard work templates and instructions. New methods were disseminated to stakeholders through a variety of showcase exercises that featured demonstrations and hands-on exercises. In general, Sikorsky production planning stakeholders were receptive to a more formal and datadriven planning process. We expect that the new methods will enable an overall planning process time of two weeks, compared to current process time of several months. Furthermore, the new methods improve forecasting accuracy by integrating and synthesizing previously unused forward-looking sales and marketing data. Going forward, a small pilot team will continue to apply and improve new planning methods. The team will engage in a preliminary pilot exercise during an upcoming revision to the five-year plan, which will occur in early 2011.
by Timothy McIntosh.
S.M.
M.B.A.
47
Underwood, Curtis J. (Curtis James), und Jacob R. Wood. „Applying an analytical framework to production process improvement“. Thesis, Massachusetts Institute of Technology, 2007. http://hdl.handle.net/1721.1/39694.
Der volle Inhalt der QuelleAnnotation:
Thesis (M.B.A.)--Massachusetts Institute of Technology, Sloan School of Management; and, (S.M.)--Massachusetts Institute of Technology, Dept. of Civil and Environmental Engineering; in conjunction with the Leaders for Manufacturing Program at MIT, 2007.Includes bibliographical references (p. 74).
As the medium voltage switchgear industry moves from air insulated to gas insulated technology, Siemens Frankfurt factory is introducing a new gas insulated product line that will improve their relative market position. It is their intent to design a product and supporting production system that will enable substantial cost and lead time reduction over existing Siemens gas insulated switchgear products. This thesis outlines a framework for analyzing the existing production process from 'customer order to customer delivery', identifying areas of opportunity, valuing projects aimed at achieving these opportunities, and prioritizing highest value projects for implementation. To provide a rigorous analytical approach to project selection, it was important to rethink existing ways of valuing inventory holding costs, material handling costs, and lead time. By uncovering hidden costs and benefits for each, projects that otherwise seemed unattractive become important to achieving overall factory objectives. Conversely, other projects that had been historically pushed by factory leadership were shown to generate little overall return on investment.
(cont.) By using the approach outlined in this thesis, improved alignment was achieved across departments on several high value projects. This alignment positioned the factory to move forward with plans for successful implementation. It is the authors' hope that Frankfurt not only finalizes implementation of high value projects identified during this analysis, but also use the framework provided for future analysis and continued improvement.
by Curtis J. Underwood & Jacob R. Wood.
S.M.
M.B.A.
48
Yuan, Rong Ph D. Massachusetts Institute of Technology. „Setting optimal production lot sizes and planned lead times in a job shop system“. Thesis, Massachusetts Institute of Technology, 2013. http://hdl.handle.net/1721.1/82419.
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Thesis (S.M.)--Massachusetts Institute of Technology, Computation for Design and Optimization Program, 2013.Cataloged from PDF version of thesis.
Includes bibliographical references (p. 73-75).
In this research we model a job shop that produces a set of discrete parts in a make-to-stock setting. The intent of the research is to develop a planning model to determine the optimal operating tactics that minimize the relevant manufacturing costs subject to workload variability and capacity limits. We model the interplay of three key components in the job shop, namely, the production frequency for each part, the variability of production at each work station, and the level of parts inventory. We consider two operating tactics (decision variables): the production lot size for each part and the planned lead time for each work station. We model the relevant manufacturing costs, entailing production overtime costs and inventory-related costs (finished parts, work-in-process, and raw materials), as functions of these decision variables. We formulate a non-linear optimization model and implement it in the Excel Spreadsheet. We solve the model with the premium Excel Solver to determine the minimum-cost operating tactics. We test the model with both hypothetical and actual factory data from our research sponsor. The target factory processes 133 product parts on 59 work stations. The results are consistent with our intuition and demonstrate the potential value from optimizing over these tactics; these tests also provide some managerial insights on the application of these operating tactics.
by Rong Yuan.
S.M.
49
Bedri, Hisham. „Spatial News : exploring augmented reality as a format for content production, organization, and consumption“. Thesis, Massachusetts Institute of Technology, 2018. http://hdl.handle.net/1721.1/120688.
Der volle Inhalt der QuelleAnnotation:
Thesis: S.M., Massachusetts Institute of Technology, School of Architecture and Planning, Program in Media Arts and Sciences, 2018.Cataloged from PDF version of thesis. "September 2018."
Includes bibliographical references.
News has been criticised for being fake and promoting echo-chambers. At the same time, spatial technologies have become more accessible, enabling affordable virtual reality (VR) and augmented reality (AR) systems. These systems enable a new channel for interfaces and content. Can these technologies establish a connection between space and news, resulting in a stronger connection between viewers and the news? We address these questions by building tools for news production and content consumption that use spatial technology. Through user-tests we show that spatial-organization of news information can result in greater news exposure. We evaluate spatial production tools by creating three live-broadcasts in VR and comparing them to broadcasts done by a production team. We also show that users have a bimodal response to 2.5D videos shown in AR. This thesis presents and evaluates a series of interactive spatial experiences to address the potential for spatial technologies for media-based journalism.
by Hisham Bedri.
S.M.
50
Dudnik, Sara A. „Mitigating the impact of a time-dependent production process“. Thesis, Massachusetts Institute of Technology, 2007. http://hdl.handle.net/1721.1/39330.
Der volle Inhalt der QuelleAnnotation:
Thesis (S.M.)--Massachusetts Institute of Technology, Engineering Systems Division; and, (S.M.) -- Massachusetts Institute of Technology, Sloan School of Management; in conjunction with the Leaders for Manufacturing Program at MIT, 2007.Includes bibliographical references (p. 61).
Value-added processes that bear associated wait times occur frequently during production manufacturing and increase cycle time. Since the wait time is integral to the value created by the process, it can be difficult to reduce the cycle time impact. The use of adhesives and the impact of their associated cure times is an example of such a time-dependent process and one that appears frequently on products made at Raytheon Space and Airborne Systems (SAS). Using a typical Raytheon pod system (RPS) as a case study, this thesis examines various ways to mitigate the impact of these value-added associated wait times (VAAWT) on cycle time. Adhesives with long cure and/or set times are used extensively throughout the design of this RPS in both structural and non-structural applications. Now that the RPS is well into full-rate production, the cycle time impact of these adhesives' VAAWT has become a burden, accounting for over 60% of the cycle time on the three assemblies studied on during the case study. Both short-term and long-term solutions were developed as a result of this project, which enabled a 23% reduction in cycle time exclusive of changes in design.
(cont.) Based upon the lessons learned during this case study, a set of guidelines is presented for application to other time-dependent processes and Raytheon products. This thesis also discusses some of the barriers encountered during the implementation of this project and suggestions for overcoming them. These guidelines and lessons have already been applied successfully to reducing the impact of adhesive cure times on a second SAS product line, resulting in a cycle time reduction of 80%.
by Sara A. Dudnik.
S.M.