Rozprawy doktorskie na temat „Systems disruption”
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Jun, Hyewon. "Power Management in Disruption Tolerant Networks". Diss., Georgia Institute of Technology, 2007. http://hdl.handle.net/1853/19879.
Pełny tekst źródłaMistak, Daniel. "Disruption an interrogation of the foundations of ethical systems /". Pullman, Wash. : Washington State University, 2010. http://www.dissertations.wsu.edu/Thesis/Spring2010/d_mistak_041910.pdf.
Pełny tekst źródłaPagani, Linda. "Children's coping with marital disruption : a family systems perspective". Thesis, McGill University, 1993. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=41234.
Pełny tekst źródłaHellström, Carolina. "Disruption i managementkonsultindustrin : Är det nu det händer?" Thesis, Linnéuniversitetet, Institutionen för informatik (IK), 2020. http://urn.kb.se/resolve?urn=urn:nbn:se:lnu:diva-98396.
Pełny tekst źródłaGiles, Hamilton. "Biotransformation potential of phytosterols in biological treatment systems under various redox conditions". Thesis, Georgia Institute of Technology, 2012. http://hdl.handle.net/1853/48993.
Pełny tekst źródłaLensing, Reshma P. (Reshma Pradhan) 1972. "Historical events and supply chain disruption : chemical, biological, radiological and cyber events". Thesis, Massachusetts Institute of Technology, 2003. http://hdl.handle.net/1721.1/28561.
Pełny tekst źródłaIncludes bibliographical references (leaves 98-113).
In the wake of the attacks of September 11, 2001, terrorism emerged as a legitimate threat not just to society, but to corporations as well. This new threat has challenged old business rules and prompted companies to rethink their supply chain operations. However, the events of September 11th were not the first or the only disruptions that the business world had experienced. This thesis reviews past historical events that simulate the effects of a terrorist attack and extracts lessons that can be applied by today's corporations to prepare for future attacks or disruptions. The types of events studied include Biological, Chemical, Radiological and Cyber disruptions. Through the analysis and synthesis of each event's impact, the following generalized recommendations emerged: Prior warnings and events should be acknowledged, studied and utilized. Government intervention may strain operations under disruptive stress. Alternate sourcing should be considered to ease supply issues. Disruptions should be approached in a comprehensive and forthright manner. A security and safety culture should be fostered to prevent disruptions and control their spread. Systems should be prepared to quickly operate in isolation during a disruption. Finally, impact is frequently less severe then initially predicted. Through the events described and these recommendations, this thesis aims to provide lessons for firms to manage their supply chains through future disruptions.
by Reshma P. Lensing.
M.Eng.in Logistics
Shefali, Shweta. "Disruption of the group health insurance in light of the Affordable Care Act - system approach". Thesis, Massachusetts Institute of Technology, 2014. http://hdl.handle.net/1721.1/90725.
Pełny tekst źródłaCataloged from PDF version of thesis.
Includes bibliographical references (page 127) and index.
Our current Healthcare system has multiple problems and it is widely perceived that it is not able to provide quality affordable healthcare to all Americans; millions of Americans are without Health Insurance. The Affordable Care Act (ACA) was signed into law to achieve goal of 'quality affordable care for all American'. The ACA has focus on Individual Health Insurance and the provision of Health Exchange Marketplaces to find and purchase Health Insurance. Disruptive Innovation is a phenomenon in which a new entrant company disrupts the existing established company. As ACA and Health Exchanges have provided level playing field for all companies - new entrants and established - will this lead to disruption of Healthcare? Disruptive Innovations is analyzed from System Approach point of view. Disruption is not limited to two companies; Disruptor System disrupts the existing system including incumbent company. Disruption will be spearheaded by new entrant Disruptor Company and disruption will take place at system level. The existing Healthcare System and Possible Disruptor Systems are defined and investigated. Relative advantage and disadvantages to these two systems with regard to ACA regulations are analyzed. Elements of the healthcare disruptor system are analyzed and information present in the public domain about Health Exchange enrolment after the end of first enrollment seasons is studied to find out who could be possible disruptor and whether disruptor system formation has started.
by Shweta Shefali.
S.M. in Engineering and Management
Fialkoff, Marc Richard. "Assessment of the Jones Act Waiver Process on Freight Transportation Networks Experiencing Disruption". Diss., Virginia Tech, 2017. http://hdl.handle.net/10919/89069.
Pełny tekst źródłaPHD
Kollmeier, Juna Ariele. "The intergalactic medium absorption, emission, disruption /". Columbus, Ohio : Ohio State University, 2006. http://rave.ohiolink.edu/etdc/view?acc%5Fnum=osu1153856075.
Pełny tekst źródłaShen, Su 1973. "Integrated real-time disruption recovery strategies : a model for rail transit systems". Thesis, Massachusetts Institute of Technology, 2000. http://hdl.handle.net/1721.1/9127.
Pełny tekst źródłaIncludes bibliographical references (leaves 125-126).
Rail transit systems are subject to frequent disruptions caused by a variety of random disturbances, signal problems and door problems, for example. Such disruptions usually last for 10 to 20 minutes, which degrades the level of service significantly. To improve service reliability, transit agencies employ various real time control strategies, such as holding, expressing and short turning, to deal with these disruptions. The effectiveness of these control strategies relies upon the bird's-eye-view of the whole system. Unfortunately, it is difficult for human dispatchers to assess the situation and make good decisions in real time, even with the aid of advanced information technologies such as automatic vehicle location systems. This thesis focuses upon the development of a real-time disruption control model for rail transit systems during disruptions. A deterministic model to representing the rail transit system is first introduced. In the model, the passenger flow rates and running time between stations are constant but station-specific. Assuming that the disruption duration is known, a formulation is developed that makes use of real time vehicle location information and considers holding, expressing and short turning strategies to reduce the impact of the disruption. The objective is to minimize the sum of total platform waiting time and weighted in-vehicle delay. The original formulation is transformed into a linear mixed integer problem, which can be solved by any linear optimizer. The formulation is applied to a disruption scenario on a simplified system based on the Massachusetts Bay Transportation Authority Red Line. The sensitivity of different control strategies to the disruption duration assumption is investigated. The results showed that holding strategies combined with short turning strategies can reduce the weighted waiting time (the sum of platform waiting time and weighted in vehicle delay) by about 10-60%, compared with not applying any control strategies. Expressing only provided modest additional benefits. For the deterministic disruption duration assumption, sensitivity analysis showed that holding and expressing strategies are fairly robust, but the effectiveness of short turning strategies is quite sensitive to the accuracy of the disruption duration estimate. Most problem instances of the formulation can be solved in real-time with the proposed branching sequence used in the branch-and bound algorithm to solve this mixed integer problem.
by Su Shen.
S.M.
Ogallo, Godfrey G. "Development of Remote Water Quality Monitoring System Using Disruption Tolerant Networking (DTN)". Ohio University / OhioLINK, 2016. http://rave.ohiolink.edu/etdc/view?acc_num=ohiou1452255796.
Pełny tekst źródłaDoering, Michael [Verfasser], i L. [Akademischer Betreuer] Wolf. "Disruption Tolerant Vehicular Communication in Public Transportation Systems / Michael Doering ; Betreuer: L. Wolf". Braunschweig : Technische Universität Braunschweig, 2012. http://d-nb.info/1175822663/34.
Pełny tekst źródłaMetzler, Florian. "Firms, industries, and technological change : a patent-based approach to studying disruption and disruptors". Thesis, Massachusetts Institute of Technology, 2019. https://hdl.handle.net/1721.1/122729.
Pełny tekst źródłaCataloged from PDF version of thesis.
Includes bibliographical references.
This thesis presents a new empirical approach as well as a new patent-based dataset for studying disruption and technology transition cases. At the core of this approach lies a novel engineering systems framework of technological change. The framework focuses on the relationship between changes in technological competencies and changes in product designs, and encompasses both firm-level and industry-level dynamics. The new framework and dataset are applied to the study of three cases of technology transition during the 1993- 2012 period. The cases include (1) disruption in the mobile phone industry with a focus on Apple, BlackBerry, and Nokia; (2) disruption in the photography industry with a focus on Fujifilm, Canon, and Kodak; and (3) technology transition in the automotive industry with a focus on Toyota, Volkswagen, and GM.
The former two industries comprise widely discussed disruption cases, allowing me to demonstrate advantages of the presented approach and develop novel insights into these cases. The third case, on the automotive industry, generates complementary insights by considering an industry with products comprising more integrated product architectures. The case selection allows for cross-case comparisons to begin endogenizing industry-specific factors. The thesis' main contributions are methodological and theoretical: First, I present a new dataset - and corresponding data assembly methods - of comprehensive corporate patent portfolios. The portfolios take into account each firm's corporate family tree structure as well as acquisitions. As such, the dataset reflects the actual range of firms' codified technological activities more closely than previous efforts and enables a more accurate view on how technological change manifests in firms and industries.
To connect the data to theory, I develop a set of novel metrics to operationalize semantic concepts such as technological diversification and concentration of portfolios as well as firms' technological core and growth competencies. These metrics are based on a newly developed variance measure for hierarchically structured networks. I define growth competencies as competencies that undergo rapid year-to-year growth outside of a firm's core competencies. By identifying incumbents' growth competencies from historical data before major transitions, I am able to successfully hindcast future new entrants in the cases presented. Further, I introduce the concepts of technology space and product space as mappings of compositions of technological competencies and of technological competencies required by compositions of products. Second, the thesis makes theoretical contributions to resource-based view (RBV) and disruption literatures.
Specifically, it presents a dynamic extension to the RBV, endogenizing technological change as well as firm-industry interconnections with regard to the emergence of technology convergences and the evolution of product designs. My findings suggest that a firm's relative position and movement in technology space needs to be considered separately from its position and movement in product space, i.e. its changing composition of competencies and its changing composition of products. Specifically, whereas firms' movements in product space can appear abrupt and even surprising - such as the sudden entry into new markets - my analysis shows that changes in technology space tend to be slower, more continuous, and more predictable.
I find that in disruption cases such as with Apple's sudden "entry" into the mobile phone industry, the new framework reveals that it was in fact the mobile phone industry that gradually "entered" Apple's position in technology space - as the technological requirements of phone industry products became more and more similar to Apple's preexisting, and highly stable, competencies. Moreover, I extend the concept of technology-product connections, as put forth statically by RBV theorists, by adding a time-dependent dimension. I argue that incumbent failure - such as Nokia's and Kodak's - can be explained by incumbents' inability to diagnose and respond to the gradual weakening of their technology-product connections; in other words, by neglecting to either adjust their technological competencies or to adjust their product offerings in response to technological change.
In turn, a firm with greater awareness of its own composition of technological competencies relative to its competitors as well as the changing technological requirements of prevalent product designs can deliberately incorporate such insights into strategic decision-making. In the empirical cases, I observe the ability to sense dynamics in technology and product spaces relative to the firm, and the ability to time the firm's actions accordingly, to be more present in some firms than in others. I term the existence of such abilities timing and sensing capabilities and propose them to be a concrete and operationalizable subset of Dynamic Capabilities.
by Florian Metzler.
Ph. D. in Engineering Systems
Ph.D.inEngineeringSystems Massachusetts Institute of Technology, School of Engineering, Institute for Data, Systems, and Society
Dehghani, Sanij Mohammad Saied. "Characterizing the Dynamics of Vulnerability for Roadway Infrastructure Systems". Diss., Virginia Tech, 2013. http://hdl.handle.net/10919/53507.
Pełny tekst źródłaPh. D.
Clarke, Neil. "Seasonal effects of treated sewage effluents upon the reproduction and development of European freshwater molluscs". Thesis, Brunel University, 2009. http://bura.brunel.ac.uk/handle/2438/4458.
Pełny tekst źródłaNordin, Syarifah Zyurina. "Task scheduling in parallel processor systems". Thesis, Curtin University, 2011. http://hdl.handle.net/20.500.11937/2510.
Pełny tekst źródłaHofmann, Christopher Michael. "Peptide-Based Systems for the Targeted Disruption and Treatment of Staphylococcus epidermidis Biofilms". Case Western Reserve University School of Graduate Studies / OhioLINK, 2012. http://rave.ohiolink.edu/etdc/view?acc_num=case1333559337.
Pełny tekst źródłaTorgerson, Leigh, Joseph Hutcherson i James McKelvey. "TCP PERFORMANCE ENHANCEMENT OVER IRIDIUM". International Foundation for Telemetering, 2007. http://hdl.handle.net/10150/604499.
Pełny tekst źródłaIn support of iNET maturation, NASA-JPL has collaborated with NASA-Dryden to develop, test and demonstrate an over-the-horizon vehicle-to-ground networking capability, using Iridium as the vehicle-to-ground communications link for relaying critical vehicle telemetry. To ensure reliability concerns are met, the Space Communications Protocol Standards (SCPS) transport protocol was investigated for its performance characteristics in this environment. In particular, the SCPS-TP software performance was compared to that of the standard Transmission Control Protocol (TCP) over the Internet Protocol (IP). This paper will report on the results of this work.
Simon, Samantha Mea. "Technological Disruption in Entertainment: Navigating the Film Industry's Dynamic Relationship to the Consumer". Scholarship @ Claremont, 2017. http://scholarship.claremont.edu/scripps_theses/1028.
Pełny tekst źródłaSchipper, Danny, i Lasse Gerrits. "Differences and similarities in European railway disruptionmanagement practices". Elsevier, 2018. https://publish.fid-move.qucosa.de/id/qucosa%3A72188.
Pełny tekst źródłaCampbell, Melissa English. "Structure and Disruption: A Detailed Study of Combining the Mechanics of Weaving with the Fluidity of Organic Forms". Kent State University / OhioLINK, 2013. http://rave.ohiolink.edu/etdc/view?acc_num=kent1385041550.
Pełny tekst źródłaHallin, Erik, i Mikael Fehrm. "Störningsinformation i tågtrafiken : Attityder bland resenärer och tågbolag till störningsinformation och tjänster för sådan information". Thesis, Högskolan Dalarna, Informatik, 2016. http://urn.kb.se/resolve?urn=urn:nbn:se:du-22601.
Pełny tekst źródłaVid bokandet av en resa längs med järnvägen via flera tågbolag så finns (i dagens läge) inte alltid information kring eventuella störningar längs med järnvägen som kan förändra eller ställa in den bokade resan. I dag är forskning kring bantrafiken i Sverige begränsad. Det är oklart hur nöjda resenärer är med kvalitén på den information de får kring sin resa (om de får den överhuvudtaget), bland annat med avseende på störningar. Vår samarbetspartner har identifierat vad de tror är ett behov hos tågbolag, vilket är en tjänst för information om tågtrafiken för resenärer. Utöver att bekräfta att det här behovet finns har vi även ett intresse att undersöka hur en sådan här tjänst skulle kunna se ut och vad användarna vill ha. Vår forskning har visat att resenärerna inte är nöjda med varken mängden information om störningar eller hur ofta de får den. Tillsammans med Knowit Borlänge har vi kommit fram till ett lösningsförslag som använder befintliga tekniker för att skapa en portal som på ett effektivt sätt levererar störningsinformation till resenärer.
Krikos, Alexis Christopher. "Disruptive technology business models in cloud computing". Thesis, Massachusetts Institute of Technology, 2010. http://hdl.handle.net/1721.1/59255.
Pełny tekst źródłaCataloged from PDF version of thesis.
Includes bibliographical references.
Cloud computing, a term whose origins have been in existence for more than a decade, has come into fruition due to technological capabilities and marketplace demands. Cloud computing can be defined as a scalable and flexible shared computing solution in which third-party suppliers use virtualization technologies to create and distribute computing resources to customers on-demand, via the Internet browser. Cloud computing is steadily replacing more rigid software and services licensing models in both small/medium business (SMB) and in the enterprise. This analysis poses a twofold examination of cloud computing as a disruptive technology. First, cloud computing has replaced existing software and services licensing business models, owing to its scalability, flexibility, and utility-based pricing. Second, as cloud computing takes hold as the prominent computing services business paradigm, other disruptive forces will surface to further integrate and differentiate the cloud computing landscape. These forces include the customer-driven need to create hybrid clouds between private and public cloud domains, vendor-agnostic solutions in the cloud, along with open standards to make cloud computing ubiquitous. Three criteria are assessed in characterizing cloud computing as a disruptive technology (Christensen, 2002).1 First, cloud computing as an innovation, must enable less-skilled and/or less-wealthy individuals to receive the same utility as only the more-skilled and/or more-wealthy intermediaries could formerly attain. Second, cloud computing must target customers at the low end of a market with modest demands on performance, but with a performance trajectory capable of exceeding those demands and thus taking over markets, tier by tier. As a corollary to this second criterion, the cloud computing business model allows the disruptive innovator to achieve attractive returns at prices that are unattractive to the incumbents. Third, an ecosystem in the form of a fully integrated single entity or a set of modular entities is required to successfully support the disruptive innovation. The analysis has shown that cloud computing is replacing traditional outsourcing and premise-based data centers for software applications and services delivery. Scalability, flexibility, virtualization, and cost are essential business drivers. However, current cloud computing solutions, especially in the enterprise, lack sufficient security and customer control. This gives rise to numerous subordinate disruptive business solutions which enable the enterprise and emerging demographics to develop and deploy their applications and services in a secure, controlled, profitable, and ubiquitous environment.
by Alexis Krikos.
S.M.in System Design and Management
Kean, Van Alexander. "The Petroleum Disruption Response System". Thesis, Virginia Tech, 1991. http://hdl.handle.net/10919/41502.
Pełny tekst źródłaAs a result of DoD "Supply Assurance" initiatives prompted by the 1979 disruption, numerous policy options have been developed to help the Office of the Secretary of Defense (OSD) more effectively deal with future shortage situations. The key to avoiding the problems of 1973 and 1979 is early identification of shortage situations and selection of appropriate policy options designed to ensure a steady supply of military fuels during energy emergencies.
The Petroleum Disruption Response System (PDRS) is a decision support system designed to assist DFSC energy analysts and planners in preparing recommendations for the Office of the Assistant Secretary of Defense (OASD) energy policy staff on appropriate policy options to ensure adequate petroleum supplies for the national defense.
This paper contains a conceptual model of PDRS that is
based on a network optimization distribution model. The model would optimize the resupply distribution network in terms of
minimum cost solution.
Master of Science
Ashworth, Geoffrey (Geoffrey John). "Architectural disruption in aerospace". Thesis, Massachusetts Institute of Technology, 2009. http://hdl.handle.net/1721.1/55202.
Pełny tekst źródłaCataloged from PDF version of thesis.
Includes bibliographical references (p. 70-71).
Distinctive technology and customer / supplier relationships are currently the primary sources of competitive advantage in the Aerospace industry. Modular Open System Architecture (MOSA) requirements represent a significant disruption to this mode of competition. The United States Department of Defense intends to accelerate the rate of aerospace innovation and inject additional competitiveness into the procurement process through the modularization of its products and effective intellectual property management. This combination of architectural disruption and new customer capabilities has the potential to reduce the industry's opportunity to capture value from innovative technologies or a position as first supplier. Historical examples such as Polaroid and IBM demonstrate the organizational paralysis that often results from disruptions in product architecture. The competitive formula becomes ingrained in the processes, resources, and culture of mature companies and is no longer explicit knowledge, which limits the company's ability to develop the capabilities required to compete in its new environment. Competing in a MOSA environment will require the development of new organizational capabilities such as rapid experimentation, fighting standards wars, and protecting system-level knowledge. Defining the disruptive threat and the foundations of current core competencies will enable firms to develop the organizational capabilities essential for this shift in competitive context.
(cont.) The author will present several historical examples of architectural disruption, a framework for evaluating the disruptive change, and an identification of organizational anchors that may hinder a particular competitor's ability to respond to MOSA. The goal of the thesis is to start a dialogue within an identified incumbent with in hopes of beginning the organizational transformation required to effectively compete in this new era.
by Geoffrey Ashworth.
S.M.
Kijewski, Richard Joseph. "The impact of disruptive technology trends on networking hardware vendors". Thesis, Massachusetts Institute of Technology, 2015. http://hdl.handle.net/1721.1/105310.
Pełny tekst źródłaCataloged from PDF version of thesis.
Includes bibliographical references (pages 78-80).
The creation of the Internet has enabled the modern day technology economy. A critical component of the Internet is the routing and switching products that enable and support the movement of data through the Internet. These routing and switching products have enabled a networking market dominated by vendors of proprietary networking equipment. However, the Internet continues to grow rapidly, and this is putting pressure on the current architecture of these router and switch products. Alternative technologies and business models are being introduced to customers, changing the value proposition of proprietary networking equipment. This thesis provides a holistic analysis of the impact of the changing technology and business environment on the architecture of the current router and switch products, and the business implications for the vendors of these products. Academic frameworks and scholarly articles are used to analyze the value of the current architecture, and its ability to maintain the dominance of the incumbent vendors of proprietary networking equipment in the new environment. This analysis found that the current router and switch architecture is not flexible enough to support the growing demands of the Internet and corporate intranets. The value components of the proprietary architecture will be replaced by open and common versions of the same components, and then reconfigured to provide a novel and flexible architecture. As a result, the existing proprietary solutions will decrease in significance and a larger open ecosystem of software and hardware vendors will share the profits of the networking market. The vendors of proprietary networking equipment will be forced to adopt less lucrative business strategies to compete effectively in the new environment. A once dominant architecture and a source of tremendous value for these networking equipment vendors and their stakeholders will be replaced by an open architecture, resulting in the networking equipment vendors losing dominance in the market they created.
by Richard Joseph Kijewski.
S.M. in Engineering and Management
Valente, João Filipe Torres. "Servo-system for controlled postural balance disruption". Master's thesis, Universidade de Aveiro, 2016. http://hdl.handle.net/10773/19139.
Pełny tekst źródłaO estudo do equilíbrio postural é uma preocupação que se aplica igualmente a seres humanos e robôs com pernas. Em relação a Humanos este problema foca-se na deteção de patologias, avaliação da capacidade de manter o equilíbrio e recolher dados acerca da forma como o equilíbrio é mantido. Por outro lado, o estudo da postura de um robô tem como objetivo avaliar e melhorar o seu controlo. Dada a necessidade de testar o equilíbrio do Projeto Humanóide da Universidade de Aveiro - PHUA, surgiu a ideia de criar um sistema de distúrbio do equilíbrio. A ideia é o sistema perturbar o equilíbrio utilizando forças de tração que poderão ser aplicadas em todas as direções do plano horizontal. Como primeira abordagem, o conceito é testado num pêndulo assistido por elásticos, com o objetivo de perceber qual a melhor forma de controlar o sistema e encontrar possíveis problemas para o seu controlo. Numa primeira fase, é desenhado um controlador para criar um estado de balanço em que as forças são iguais fazendo com que o pêndulo fique imóvel. Numa segunda fase, depois de atingir o estado descrito anteriormente, o pêndulo é brevemente puxado num sentido e são medidas as forças e o ângulo do pêndulo para se analisarem os efeitos do estímulo. Desta maneira, várias formas de aplicar estímulos são testadas assim como diferentes estímulos. Percebeu-se que: é possível aplicar estímulos repetíveis com este conceito; o facto de o sistema ser acoplado e não-linear causa dificuldades para o controlo, sendo necessário adoptar novas estratégias. Esta dissertação vai servir como suporte para o trabalho futuro, (que será construir o sistema à escala do PHUA) oferecendo um conjunto de informações e guias.
Postural balance is a concern that applies to both humans and bipedal robots. For Humans, this issue is focused on detecting some pathologies, evaluating individual balance capability, and gather data on how equilibrium is maintained. On the other hand the robot’s postural study aims to evaluate the machine’s control and help tune it. Given the need to test the equilibrium of University of Aveiro Humanoid Project - PHUA, the idea of creating a balance disruption system came up. The idea is that the system disrupts the balance using pull forces that can be applied in every direction of the horizontal plane. As a first approach, the concept is tested on a pendulum assisted by elastics, with the objective of understanding which is the best way to control the system and find possible problems to its control. On an initial phase, a controller is designed to create a state of balance where the pull forces are equal making the pendulum stand still. On a second phase, after achieving the state of balance described previously, the pendulum is briefly pulled in a direction and tensile forces and the pendulum’s angle are measured, with the purpose of analysing the effects of the stimulus. This way, different manners of applying stimuli and different types of stimuli are tested. It was realised that: it is possible to apply repeatable stimuli with this concept; the fact that the system is coupled and non-linear brings obstacles to its control, being necessary to adopt new control strategies. This dissertation will serve as a support for future work, (which is building the system at PHUA scale) offering a set of informations and guidelines.
Nilsson, Karin. "The Future of Print Subscribers : A Stable Resource or just Wishful Thinking?" Thesis, Linnéuniversitetet, Institutionen för informatik (IK), 2020. http://urn.kb.se/resolve?urn=urn:nbn:se:lnu:diva-97979.
Pełny tekst źródłaKiper, Halil 1976. "Disruptions in the sports content delivery value chain due to consuming sports content over the Internet". Thesis, Massachusetts Institute of Technology, 2013. http://hdl.handle.net/1721.1/105299.
Pełny tekst źródłaCataloged from PDF version of thesis. "November 2013."
Includes bibliographical references (pages 81-83).
A major component of the highly lucrative sports business is the content delivery value chain consisting of a number of players including the content creators - sports leagues; content aggregators - TV networks; content distributors - pay TV providers; advertisers - one of the main financiers in the value chain; and consumers. The relationships between the value chain players have been both cooperative and competitive, especially when the borders separating them became less defined due to backward and forward integration efforts of players. With the advancements in Internet content delivery and electronic devices, a new form of sports content consumption has emerged that has the potential to re-define the borders between the value chain players and to disrupt the industry. This new form of sports content consumption is Sports over IP (SpoIP, sports content consumption over the Internet). This thesis lays out four different scenarios about how the SpoIP disruption could play out in the value chain. It uses information from similar disruption in other industries and system dynamics modeling to present the ramification and likelihood of each scenario. This work predicts that the consumers will be the winner of SpoIP disruption because they will have access to good quality and cheaper sports content going forward.
by Halil Kiper.
S.M. in Engineering and Management
Lee, Garrett J. (Garrett James), i Chang Zen-Lee M. "Supply chain disruptions : managing risks vs. managing crises". Thesis, Massachusetts Institute of Technology, 2007. http://hdl.handle.net/1721.1/40096.
Pełny tekst źródłaThis electronic version was submitted by the student author. The certified thesis is available in the Institute Archives and Special Collections.
Includes bibliographical references (leaves 74-76).
This thesis looks at two back-to-back disruptive supply chain events, one due to a sole-supplier's bankruptcy and the other caused by Hurricane Rita, that occurred at a specialty chemical company, and uses these examples to demonstrate how managing crises is more costly than managing risks. In examining the events surrounding the sole-supplier bankruptcy, managing a crisis cost this specialty chemical company 45% more money than managing a risk. Through the findings of these two disruptive events, a framework, the Eye of Providence, is created to manage supply chain risks. First, an organization must determine how developed its risk-management protocol is. Next, by studying past disruptive events and determining the key impact factors, an organization could calculate and learn about the opportunity cost of managing crisis. Then, by continuously evaluating its suppliers and rigorously applying those key impact factors to the analysis of its supply chain practice, an organization could evaluate and identify its current vulnerabilities.
(cont.) Finally, by proactively monitoring event-based warning signals, or disruption indicators, an organization could assess its potential supply chain risks, and plan accordingly. Whether a company is low on the risk-maturity level or has already integrated risk management into its corporate culture, the process developed in this thesis serves as a versatile tool that can help businesses structure a more dynamic, resilient supply chain.
by Garrett J. Lee [and] Zen-Lee M. Chang.
M.Eng.in Logistics
Ruby, Christina L. "Ethanol Disruption of the Mammalian Circadian Timing System". Kent State University / OhioLINK, 2010. http://rave.ohiolink.edu/etdc/view?acc_num=kent1270053064.
Pełny tekst źródłaSaavedra, Román Jóse Guillermo. "Disruptive adaptability : a case study in a product development organization". Thesis, Massachusetts Institute of Technology, 2016. http://hdl.handle.net/1721.1/106265.
Pełny tekst źródłaCataloged from PDF version of thesis.
Includes bibliographical references (pages 94-100).
Enhancing the practice of Product Development has been addressed in multiple works and published in documents of all kind ranging from theses and consultancy studies to papers in specialized journals. Regardless of the focus, either on processes, tools, methods or organizational design what is common is a reactive -"gapflling"-approach. In this work I propose that enhancing the practice of product development is better achieved when it is addressed from a holistic perspective in which either the improvement, optimization or enhancement of the product development practice is in essence an adaptation of the product development organization. Seeing the practice of product development from the adaptability lens, allows us to create enhancements that go beyond the traditional "gap-filling" approach of fixing issues using information from the past, and opens up a broader -yet richer-set of alternatives to design improvements that not only prevent issues to occur but that also are meant to change the game. The main focus of this work is the design of a disruptive adaptation for Ford Motor Company Product Development Organization focused on its capabilities for the development of in-vehicle features which are instrumental in the customer experience that is delivered by Ford automobiles. This design was developed following a systems thinking approach for large complex systems and is aligned to Ford Motor Company objective of changing the way the world moves. The design concept for this disruptive adaptation focuses on elaborating a desired future state of the capabilities to develop an unparalleled customer experience in Ford vehicles. It also considers the future context of a platform-based business model where the automobile is the platform. As starting point, I researched the current state of Ford capabilities for the development of in-vehicle features and realized that the Electronic Control Units (ECUs) of the vehicle play a fundamental role. Then, I used systems modeling tools such as Domain Mapping Matrix (DMM) and Design Structure Matrix (DSM) to understand and quantify the patterns of interaction among vehicle features that occur across all Electronic Component Units (ECUs) of an automobile. Finally I developed a holistic proposal to adapt the strategy, methods, tools and organizational structure that is meant to support Ford Motor Company in its pursuit to disrupt the mobility paradigm.
by Jóse Guillermo Saavedra Román.
S.M. in Engineering and Management
Welton, Thomas. "Imaging markers of brain network disruption in multiple sclerosis". Thesis, University of Nottingham, 2017. http://eprints.nottingham.ac.uk/43634/.
Pełny tekst źródłaWilson, Bryan K. (Bryan Keith). "Risk from network disruptions in an aerospace supply chain". Thesis, Massachusetts Institute of Technology, 2010. http://hdl.handle.net/1721.1/61189.
Pełny tekst źródłaCataloged from PDF version of thesis.
Includes bibliographical references (p. 76-77).
This thesis presents methods for determining the effects of risk from disruptions using an aerospace supply chain as the example, primarily through the use of a computer simulation model. Uncertainty in the current marketplace requires managers to be cognizant of the adverse impact of risk on their company's performance. However, managers who lack formal procedures for dealing with the potential impact of risk often are caught not knowing how much to invest in risk mitigation strategies. A computer simulation model representing a supply chain for a space vehicle was used to test different disruption scenarios to determine their impact on total production duration time. Scenarios ranging from suppliers not providing parts on time to quality test failures to disease pandemics were all considered. Randomness was incorporated through use of a stochasticity factor that was applied uniformly throughout the model. Output of the model was used to develop confidence percentiles for the complete duration times. Through testing of the various scenarios using the model we learned that most disruptions will add a deterministic time to the total estimated duration time of the system, regardless of the location of the disruption in the supply chain. In addition, we showed that a thorough review must be performed when choosing the stochasticity factor due to its large influence in determining total duration times and performance percentiles. The creation of the confidence percentiles allows the aerospace company to use the model throughout the entire 3 to 4 year production process to continually update and evaluate their buffer times and likelihood of meeting target completion dates. This buffer time can then be turned into a key performance index to better manage this supply chain. This model was created for a real supply chain, and it is currently being used by the aerospace company to help them plan and make appropriate decisions in regards to risk mitigation strategies in preparation for production of the space vehicle. They hope to expand the use of computer simulation models throughout the rest of their division to help drive down costs by increasing efficiencies in their planning.
by Bryan K. Wilson.
M.Eng.in Logistics
Flaherty, Matthew (Matthew W. ). "A strategic framework using open innovation and platforms to embrace disruptive "Software as a Service" technology". Thesis, Massachusetts Institute of Technology, 2010. http://hdl.handle.net/1721.1/59242.
Pełny tekst źródłaCataloged from PDF version of thesis.
Includes bibliographical references (p. 114-116).
Over the past several decades, technology has become fundamental to the facilitation of communication, collaboration and productivity inside and between enterprises. Enterprises use numerous tools to reach their customers, manage increasingly decentralized and mobile workforces and to create digital assets critical to their daily operations. In the last several years, changes in the availability of internet access and the compatibility of internet browsers has resulted in massively scalable services available on the internet - delivered by models termed "Software as a Service" and "Cloud Computing". This delivery mechanism is vastly different from traditional models of enterprise software delivery where enterprise purchase, install and manage their own enterprise software packages. This thesis will evaluate a strategy for one of the market leaders in messaging, IBM Lotus, in the face of the disruptive forces of new internet enabled delivery mechanisms like Software as a Service and Cloud Computing. In doing so, it will integrate the topics of several researchers in the field of strategy and innovation. After a treatment of background topics and themes, it will present an evaluation of the enterprise software market in the face of the disruptive forces created by the internet. A framework for evaluating market strategies for established players will be developed using concepts of software platforms and open innovation. Finally, a case study of the established player will be viewed through the lens of this framework.
by Matthew Flaherty.
S.M.in System Design and Management
Warshawsky, David. "A system of systems flexibility framework: A method for evaluating designs that are subjected to disruptions". Diss., Georgia Institute of Technology, 2015. http://hdl.handle.net/1853/54277.
Pełny tekst źródłaDoucakis, Theodore. "Study of supply chain disruptions at a high tech corporation". Thesis, Massachusetts Institute of Technology, 2007. http://hdl.handle.net/1721.1/40097.
Pełny tekst źródłaThis electronic version was submitted by the student author. The certified thesis is available in the Institute Archives and Special Collections.
Includes bibliographical references (p. 61).
Although supply chain disruptions are inevitable, frameworks have been developed for addressing supply chain risks. These frameworks present methods on mitigating, reducing or managing the risks through different approaches such as multiple sourcing. The research presented here identified two factors that contribute to successful recovery from supply chain disruptions. One factor is efficient communication between stakeholders in a supply chain. The communication needs to be present before a disruption occurs to enable fast detection. After a disruption occurs efficient communications will help minimize confusion and provide clear understanding of the recovery effort between stakeholders. The other factor is the inventory position downstream of the disruption. In particular, the available days of supply downstream from the disruption relative to the length of the disruption are crucial to the ability of a supply chain to recover from the disruption without disturbing the continuity of supply. In response to the effect of the days of supply compared to the recovery time a simple model is developed for assessing supply chain risk for an enterprise that sells products defined through a bill-of-materials.
(cont.) The model takes into consideration the complexity of a product as more parts and more levels are added to the bill of material. The supply chain risk score metric permits comparison across products, companies and industries. The model is simple to apply by analyzing each part in bill-of-materials by a ranking system comparing the recovery time to the days of supply downstream from the disruption. The supply chain risk score is to be used in parallel with other supply chain metrics in order to determine the best approach in reducing risks to an enterprise.
by Theodore Doucakis.
M.Eng.in Logistics
Yip, Jennifer J. (Jennifer Jaclyn). "Evaluating upstream supply chain disruptions with partial availability". Thesis, Massachusetts Institute of Technology, 2015. http://hdl.handle.net/1721.1/98606.
Pełny tekst źródłaCataloged from student-submitted PDF version of thesis.
Includes bibliographical references (pages 138-140).
Globalization, outsourcing, and the emphasis on lean supply chains continue to shape the supply chain industry. These trends have increased the prevalence and severity of disruptions to upstream supply. Disruptions to upstream supply can delay and potentially halt the flow of necessary materials and/or services to purchasing firms, often resulting in severe operational and financial losses. This has created a growing need for effective risk assessment techniques to evaluate the impact of disruptions and inform risk mitigation policies. As a result, many methodologies have been developed to assess risk by estimating the likelihood and impact of disruptions. Given the inherent difficulty in estimating the likelihood of disruptions, this thesis focuses on assessing the risk of supply shortfall independent of the causes and likelihoods of such disruptions. This thesis presents an optimization-based framework to assess the risk of both complete and partial supply disruptions and comments on inventory and procurement mitigation strategies. The framework is used to compare two allocation policies (fair allocation and preferential product allocation) for the distribution of scarce inventory in times of disruption. The framework is then applied to data from a food products manufacturer to determine the impacts of a disruption in the supply of two components feeding dozens of products.
by Jennifer J. Yip.
S.M. in Technology and Policy
Tubilla, Kuri Fernando. "Dynamic scheduling of manufacturing systems with setups and random disruptions". Thesis, Massachusetts Institute of Technology, 2011. http://hdl.handle.net/1721.1/67606.
Pełny tekst źródłaCataloged from PDF version of thesis.
Includes bibliographical references (p. 249-256).
Manufacturing systems are often composed of machines that can produce a variety of items but that most undergo time-consuming (and possibly costly) setups when switching between product types. Scheduling these setups efficiently can have important economic effects on the performance of the plant and involves a tradeoff between throughput, inventory, and operating costs. In addition, the schedule must be robust to random disruptions such as failures or raw material shortages, which are common in production environments. In this thesis, we study policies that address the setup scheduling problem dynamically, in response to current conditions in the system. A new heuristic, called the Hedging Zone Policy (HZP), is introduced and developed. It is a dynamic-sequence policy that always produces the current part type at its maximum production rate until a fixed base stock level is reached. Then, before switching setups, the policy might produce the current part type at its demand rate for some additional time. When selecting changeovers, the HZP implements two types of decision rules. If the difference between base stock and surplus level is small for all part types, the item with the largest weighted difference is selected. Otherwise, the policy uses a fixed priority ranking to select between items that are far from their base stock value. In order to demonstrate the benefits of our policy, we also adapt and implement several other heuristics that have been proposed in the literature for related models. The policies are first analyzed in a purely deterministic setting. The stability of the HZP is addressed and it is shown that a poor selection of its parameters leads to a condition in which some low-priority parts are ignored, resulting in an unstable system. Using Lyapunov's direct method, we obtain an easy-to-evaluate and not-too-conservative condition that ensures production of all part types with bounded surplus. We then compare, through a series of extensive numerical experiments with three-part-type systems, the deterministic performance of the policies in both make-to-order and make-to-stock settings. We show that the HZP outperforms other policies within its class in both cases, a fact that is mainly attributed to its priority-based decisions. When compared to the approximate optimal cost of the problem, our policy performs very well in the make-to-order case, while the simplicity of its base stock structure makes it less competitive in the deterministic make-to-stock problem. The results are then leveraged for the study of a stochastic model, where we consider the effect of random disruptions in the form of machine failures. We prove that our model converges to a fluid limit under an appropriate scaling. This fact allows us to employ our deterministic stability conditions to verify the stochastic (rate) stability of the failure-prone system. We also extend our previous numerical experiments by characterizing the performance of the policies in the stochastic setting. The results show that the HZP still outperforms other policies in the same class. Furthermore, we find that except for cases where failures occur much less or much more frequently than changeovers, the HZP outperforms a fixed-sequence policy that is designed to track a pre-determined, near-optimal deterministic schedule.
by Fernando Tubilla.
Ph.D.
MELLO, JOSÉ ROBERTO de. "Regulamentação do sistema elétrico do reator IEA-R1". reponame:Repositório Institucional do IPEN, 2016. http://repositorio.ipen.br:8080/xmlui/handle/123456789/26928.
Pełny tekst źródłaMade available in DSpace on 2016-12-21T12:55:48Z (GMT). No. of bitstreams: 0
O reator IEA-R1 do Instituto de Pesquisas Energéticas e Nucleares (IPENCNEN/ SP) é um reator de pesquisa tipo piscina aberta, projetado e construído pela empresa norte-americana \"Babcock & Wilcox\", tendo, como refrigerante e moderador, água leve deionizada e berílio e grafite como refletores. Até cerca de 1988, os sistemas de segurança do reator recebiam alimentação de uma única fonte de energia. Nos anos de 1989 e 1990, uma reforma de modernização do sistema elétrico para aumentar a potência do reator e, também, para atender às normas técnicas da Comissão Nacional de Energia Nuclear (CNEN) e da Associação Brasileira de Normas Técnicas (ABNT) foi realizada. Este trabalho tem o objetivo de mostrar a relação entre o sistema de energia elétrica e a segurança do reator IEA-R1. Além disso, ele demonstra que, caso ocorra alguma interrupção de energia elétrica durante a operação do reator, esta ocorrência não irá começar um evento de acidente.
Dissertação (Mestrado em Tecnologia Nuclear)
IPEN/D
Instituto de Pesquisas Energéticas e Nucleares - IPEN-CNEN/SP
Belshaw, Simon. "Generative systems and disruptive processes in musical composition". Thesis, University of Hertfordshire, 2005. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.421281.
Pełny tekst źródłaLi, Jingquan. "Models and Algorithms of Real-Time Vehicle Rescheduling Problems under Schedule Disruptions". Diss., Tucson, Arizona : University of Arizona, 2006. http://etd.library.arizona.edu/etd/GetFileServlet?file=file:///data1/pdf/etd/azu%5Fetd%5F1652%5F1%5Fm.pdf&type=application/pdf.
Pełny tekst źródłaDuenas-Osorio, Leonardo Augusto. "Interdependent Response of Networked Systems to Natural Hazards and Intentional Disruptions". Diss., Georgia Institute of Technology, 2005. http://hdl.handle.net/1853/7546.
Pełny tekst źródłaMcKinlay, Rebecca. "Risk assessment of endocrine disrupting pesticides in biological systems". Thesis, Imperial College London, 2009. http://hdl.handle.net/10044/1/5585.
Pełny tekst źródłaMummery, Catherine Jane. "Neuroimaging studies of the distributed semantic system and its disruption in disease". Thesis, University College London (University of London), 2000. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.343897.
Pełny tekst źródłaHensler, Philipp A. "The Belief System and Behavior of Financial Advisors After a Market Disruption". Case Western Reserve University Doctor of Management / OhioLINK, 2013. http://rave.ohiolink.edu/etdc/view?acc_num=casedm1568710731430581.
Pełny tekst źródłaMurthy, Niren. "The design and synthesis of endosomal disruptive polymers /". Thesis, Connect to this title online; UW restricted, 2001. http://hdl.handle.net/1773/8113.
Pełny tekst źródłaRomine, Jessica D. "Business Continuity and Resilience Engineering: How Organizations Prepare to Survive Disruptions to Vital Digital Infrastructure". The Ohio State University, 2012. http://rave.ohiolink.edu/etdc/view?acc_num=osu1330986438.
Pełny tekst źródłaVaishnav, Chintan. "The end of core : should disruptive innovation in telecommunication invoke discontinuous regulation?" Thesis, Massachusetts Institute of Technology, 2010. http://hdl.handle.net/1721.1/62869.
Pełny tekst źródłaThis electronic version was submitted by the student author. The certified thesis is available in the Institute Archives and Special Collections.
Cataloged from student submitted PDF version of thesis. Page 247 blank.
Includes bibliographical references (p. 239-246).
This research analyzes how a telecommunications regulator can balance regulation with innovation, at a reasonable cost. This question has gained critical importance for telecom regulators as the unregulated Internet technologies such as voice and video over Internet disrupt the regulated traditional technologies such as telephony and television and the historical paradigm of the regulator. The existing U.S. telecommunications regulations were created in the integral age. In that paradigm, functional components that constitute a service compliant with regulation resided inside the network core; each operator was vertically integrated and controlled the total functionality necessary to deliver a service; a few such operators controlled the industry; they faced low competition and were under limited pressure to adopt innovation; and consumers had limited choice. The Internet has introduced a polar opposite paradigm-the modular age. In this paradigm, functional components that constitute a service are dispersed across the network core and edges; each firm controls only a subset of the total functionality necessary to constitute a service; many modular firms interoperate to deliver a service; firms compete fiercely and are under great pressure to innovate; and consumers enjoy far greater choice due to the multi-modal competition among multiple technologies. Although transitioning from an integral to a modular age dramatically flips the environment, the current regulatory response to this dramatic shift has been hesitant to shift its intellectual roots. Consequently, this thesis describes and analyzes the new telecommunications paradigm and explores its implications for an appropriate regulatory paradigm. The research uses the regulation of voice communications in the United States as a representative case. We analyze the new telecommunications paradigm as a dynamic complex system. Our research approach rests upon four principles of systems: two organizational principles (hierarchy and feedback) and two behavioral principles (emergent behavior and strategic and statistical behavior).The telecommunications system is viewed as one of the many subsystems that together fulfill the objectives of a society. The dynamics of the telecommunications system itself are conceptualized as those resulting from the interactions of four subsystems: regulatory dynamics, corporate strategy dynamics, consumer dynamics, and technology dynamics. The regulatory objectives to be fulfilled are conceived as an emergent property of such a system of systems. To carry out this research, we have developed a system-level dynamic feedback model and two case studies. As modular entrants of Internet-based technology disrupt integrated incumbents of traditional technology, bewildering dynamic complexity complicates decision-making by policymakers, managers, consumers, and technologists alike. Our model makes understandable the emergent behavior amidst the uncertainty that surrounds such a disruption phenomenon. The model formulations are behavioral. They are derived from the existing theories of technology and industry disruption, where possible. Alternatively, where theories have a gap, the decision processes of stakeholders, gleaned from unstructured interviews, are mathematised as the basis for the model formulations. The resulting structure is a fully endogenous systems model of regulation, competition, and innovation in telecommunications. In the first case study we analyze the regulatory environment of pre vs. post-Internet periods, both quantitatively and qualitatively. For the analysis, public comments in response to the Telecommunications Act of 1996 Notice for Proposed Rulemaking (NPRM) are compared with those in response to the IP-Enabled Services NPRM published in 2004. The analysis demonstrates how the differences in the integral and modular age are reflected in the regulatory record. The second case study analyzes how market, technology, organizational, and regulatory uncertainties affect technology and industry disruption. For this case, we use a combination of industrial statistics and content analysis of media publications. The analysis demonstrates the limits to technology and industry disruption. The case studies complement the model in two ways: first, they facilitate further refinement of the systems model; second, they empirically validate the arguments deduced from model analysis. Through this research we answer three questions: (1) Can the regulatory structure designed in an integral age-in its objectives, obligations (requirements), and enforcement mechanisms-work for a modular age? (2) How can regulators and managers improve decision making amidst the uncertainty surrounding the disruption of an integrated technology and industry by a modular one? (3) What is the new role of the telecommunications regulator and how can it be fulfilled in the modular age of the Internet? Our analysis shows that the current regulatory structure is inadequate for responding to the challenges the modular age poses. Firstly, the current objectives are appropriate but cannot be met unless regulators discontinue the merely efficiencycentered thinking and begin to address objectives at the societal level. Secondly, the current obligations may attain short-term goals, but have undesirable long-term consequences. Devising obligations that are appropriate in the long-term requires regulators to discontinue myopic measures such as incremental regulation of new technologies. Finally, the current enforcement mechanisms are blunted by the dynamic complexity of the modular age. Enforcing regulations effectively in the modular age necessitates adding to the regulatory quiver new mechanisms that are more versatile than the merely adversarial command-and-control mechanisms. Through model analysis, we demonstrate how a lack of understanding of the various uncertainties, and misperceptions of feedback in a complex system where regulators, firms, consumers, and technologists constantly interact, could lead to decisions that are costly for regulators as well as managers. Yet, as we demonstrate, with better grasp of the dynamic complexity involved, they can significantly improve decision-making to meet the challenges of the modular age. We argue that the most critical role for the telecommunications regulator in the new telecommunications paradigm is to sustain a balance between regulation and innovation, at a reasonable cost. Achieving such a balance in a modular structure is not trivial because of several natural tendencies. First, achieving high compliance at low cost is difficult because in highly modular architectures and industries, coordination costs, such as the time to build consensus, can be inordinately large. Second, keeping the innovationlevel high is difficult because it requires fighting the natural tendency of modular firms to gain and abuse market power. We propose a combination of two policy levers-Limiting Significant Market Power (SMP) Accumulation and Building Broad-based Consensus around Regulatory Issues-that most effectively achieve the desired balance and remain inadequately explored in the United States. We contend that implementing these policy levers will require, first, a more broadly construed antitrust regulation in the United States that will ensure higher modularity, and, second, a telecommunications regulatory agency that is empowered and organized to pursue objectives at the societal level and to build broad-based consensus among divergent interests in a highly modular structure.
by Chintan Vaishnav.
Ph.D.
Marshall, Curtis J. "Autonomous & Resilient Countermeasures for Emergent System Disruptions with Application to Air Traffic Management". Thesis, The George Washington University, 2020. http://pqdtopen.proquest.com/#viewpdf?dispub=27664716.
Pełny tekst źródła