Dissertations / Theses on the topic 'Systems engineering'
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Thoms, Joanne. "Human centric systems engineering." Thesis, University of Bath, 2009. https://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.501636.
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This thesis is a study into an engineering technology that enables us to investigate the cognitive aspects of systems. Where previous techniques have focused on individual human roles undertaking defined tasks, this work develops engineering technologies to understand the cognitive contribution of the human team participating in the system and how the deployment of machine decision making technologies can influence and change the possible human contribution in that system. This work first develops a framework for understanding an individual’s cognitive focus and then an engineering process that enables us to model the individual human cognitive contribution to the system and by combining these models to create a rich system model. This model can then be used to consider the deployment of advanced machine technologies, to identify new human or machine interaction requirements that are focused on maintaining the effectiveness of the human contribution. It then operationalises and verifies these engineering techniques by applying them to two systems. The first study chosen took an existing system whose effectiveness had been changed by the deployment of machine automation which has known problems; the use of the framework enabled the prediction of these problems and the identification of potential solutions. The second study investigated an existing human system and the potential deployment of machine technology. This study used the framework to create models of the human cognitive focus and joined them together to form a rich system model, into which the deployment of the machine technology was considered. This resulted in the ability to identify the impact of the machine technology across the entire human team, enabling the identification of additional requirements to support the human cognition and to maintain human knowledge.
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Heng, Jiin Shyang. "On systems engineering processes in system-of-systems acquisition." Thesis, Monterey, California. Naval Postgraduate School, 2011. http://hdl.handle.net/10945/5689.
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Approved for public release; distribution is unlimited.S results show that a low-risk SoS acquisition could continue with the current SE process as the benefits derived from an extensive front-end SE process are limited. Conversely, a high-risk SoS acquisition should adopt the SoS SE process proposed herein to enhance the SoS acquisition program's chance of success. It is highrisk SoS acquisitions such as the US Army's Future Combat System, the US Coast Guard's Deep Water System, the Joint Tactical Radio System (JTRS), and Homeland Security's SBInet that would likely benefit from the proposed SoS SE process.
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Bjelkemyr, Marcus. "System of Systems Characteristics in Production System Engineering." Doctoral thesis, Stockholm : Skolan för industriell teknik och management, Kungliga Tekniska högskolan, 2009. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-10617.
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Michel, Erik. "Systems Engineering Final." Digital Commons at Loyola Marymount University and Loyola Law School, 2015. https://digitalcommons.lmu.edu/etd/326.
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Smith, Natasha Leigh. "Application of Systems Engineering Analysis Methods to Examine Engineering Transfer Student Persistence." Diss., Virginia Tech, 2020. http://hdl.handle.net/10919/96518.
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The demand for engineering graduates in the United States continues to grow, yet the number of students entering post-secondary education is declining, and graduation rates have seen little to no change over the last several decades. Engineering transfer students are a growing population and can help meet the nation's needs, however, there is little research on the persistence of this population after they transfer to the receiving institution.
Student persistence is dependent on a complex set of interactions over time. Management systems engineering provides a framework for working with complex systems through system analysis and design, with a focus on the interactions of the system components. This research includes multiple management systems engineering analysis methods used to define and develop a systems view of engineering transfer student persistence.
This work includes a comprehensive literature review to identify factors affecting engineering transfer student persistence, an empirical analysis of an institutional dataset, and development of a simulation model to demonstrate the throughput of engineering transfer student. Findings include 34 factors identified in the literature as affecting engineering student persistence. A review of the literature also highlighted two important gaps in the literature, including a focus on post-transfer success almost exclusively in the first post-transfer year and a significant interest in vertical transfer students, with little consideration given to lateral transfer students. The empirical analysis addressed the gaps found in the literature. Vertical and lateral engineering transfer students were found to experience different levels of transfer shock which also impacts their 4-year graduation rates. The analysis also found transfer shock was not unique to the first post-transfer term, it was also present in the second and third post-transfer terms, and reframed as transfer adjustment. The simulation model uncovers leaving patterns of engineering transfer students which include the students leaving engineering in the second year, as well as those graduating with an engineering degree in the third year.
Overall this research identifies explicit factors that affect engineering transfer student persistence and suggests a new systems engineering approach for understanding student persistence and how institutions can affect change.Doctor of Philosophy
The United States continues to need more students graduating with a bachelor's degree in engineering. To meet this demand, higher education institutions are investing more time to learn how to increase the number of engineering graduates. One method is through increasing the number of students that start and finish an engineering degree. There are two types of students enrolled in engineering degrees. The first type are students that begin a bachelor's degree at a 4year institution after completion of high school; these students are known as first-time, full-time (FTFT). The second type of student are transfer students who begin at one institution and move to another. The transfer students could have started at another 4-year institution, or they may begin at a 2-year community college. There has been a significant focus on increasing the number of FTFT students starting and finishing an engineering degree. However, there is little research on engineering transfer students and their ability to finish an engineering degree after transferring. The throughput of a student in the higher education system is a complex set of interaction over time that results in either the student earning a degree or not earning a degree. Systems engineering is a field of engineering that focuses of the design of complex system and is well-suited to be applied to better understanding student throughput. This purpose of this research is to introduce systems engineering methodologies to determine what affects the persistence of engineering transfer students, i.e., finishing an engineering degree. The research findings indicate more attention should be given to engineering transfer students in their second year of enrollment. Findings also suggest that engineering transfer students should not be considered as one population. There are several types of engineering transfer students and they each have different experiences during their transfer process which influence their ability to finish an engineering degree.
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Mudlapur, Shivakumar Ambika. "Exploration of System-of-Systems Engineering (SOSE) fundamentals." Thesis, California State University, Long Beach, 2016. http://pqdtopen.proquest.com/#viewpdf?dispub=10102601.
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Systems-of-Systems (SoS) is a set or arrangement of component systems that results when independent and useful systems are interoperated into a larger system that delivers unique capabilities. This system comprises many component systems and when combined together as one they tend to produce far more advanced results than they did individually. Although Systems Engineering has long established its base and has acquired multiple feathers to its cap, System-of-Systems Engineering (SOSE) is still at an infant stage and yet constantly gaining value and attention. As the current theories and methodologies are very diversified and un-organized, this thesis is an attempt to provide a basic classification in the form of a literature review, developed based on extensive research of these varied opinions. Proposed approaches are suggested for future research to pursue the understanding of SOSE fundamentals
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Adikari, Sisira. "Usability modelling for requirements engineering /." Canberra, 2008. http://erl.canberra.edu.au/public/adt-AUC20081204.145827/index.html.
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Igenbergs, Eduard Wilke Martin Schulz Armin Peter. "Systems engineering : 1995 - 2005." München Utz, 2006. http://deposit.d-nb.de/cgi-bin/dokserv?id=2844383&prov=M&dokv̲ar=1&doke̲xt=htm.
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Igenbergs, Eduard Wilke Martin Schulz Armin Peter. "Systems engineering 1995 - 2005." München Utz, 2002. http://deposit.d-nb.de/cgi-bin/dokserv?id=2844383&prov=M&dok_var=1&dok_ext=htm.
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Sharma, Pankaj Roy. "Integrating Systems Engineering Departments." Digital Commons at Loyola Marymount University and Loyola Law School, 2007. https://digitalcommons.lmu.edu/etd/453.
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The Business world is a place of constant change, what with all the mergers and acquisitions we hear about in the news everyday. Change is all around us and it is accelerating at an alarming pace; more and more organizations are having to introduce and then manage change; this due to constant pressures on costs, the relentless drive of new technologies and, increasingly the impacts of global markets. The need to consolidate departments and services while going through the merger and acquisitions must be recognized by all executives, functional management as well as the workforce.
The purpose of the research paper was to look at the integration of Systems Engineering departments of two companies purchased by the Boeing Company. Look at in detail the effect the integration has on the efficiency and management of the workforce. Find the issues the management and the workforce is facing during the integration process. The findings and proposed solutions from this research will be presented to management to assist with building a more cohesive Systems Engineering department across company.
Most of the information for this research paper was gathered from a survey conducted at two different sites of the Boeing Company. Various levels of the workforce were polled via interviews and discussions. Literature reviews were also done on the internet and various books written on the topic of managing change in the workplace. While performing this research I discovered that there was definitely a difference between what the management believed and what the workforce knew to be true. The management believed that the certain roles and responsibilities were defined, but the workforce felt that the information was not flowdown. The majority of the workforce has observed the effectiveness of the System Engineering function be limited by the lack of common SE practices.
Based upon the information gathered from this study, it is recommended that when considering integration of System Engineering departments we should benchmark processes and tools across sites; develop common standard processes and tools while allowing for tailoring for programs. Flow down the common standards to through training. Finally audits need to be performed on a regular basis to make sure that drifts have not occurred from the established standards. Common Processes and Systems will definitely enable us to improve cost efficiency, improve cycle time and increase quality of product, process and system. This will also allow to plug and play employees across the enterprise, give new programs fast startup with core set of processes and tools. Leverage site and program innovation across Boeing and finally become one enterprise.
All this should be done to provide our customers confidence in the way we do business.
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Mathieson, John T. J. "Towards Polymorphic Systems Engineering." Thesis, The George Washington University, 2021. http://pqdtopen.proquest.com/#viewpdf?dispub=28257912.
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Systems engineering is widely regarded as a full life cycle discipline and provides methodologies and processes to support the design, development, verification, sustainment, and disposal of systems. While this cradle-to-grave concept is well documented throughout literature, there has been recent and ever-increasing emphasis on evolving and digitally transforming systems engineering methodologies, practices, and tools to a model-based discipline, not only for advancing system development, but perhaps more importantly for extending agility and adaptability through the later stages of system life cycles – through system operations and sustainment. This research adopts principles from the software engineering domain DevOps concept (a collaborative merger of system development and system operations) into a Systems Engineering DevOps Lemniscate life cycle model. This progression on traditional life cycle models lays a foundation for the continuum of model-based systems engineering artifacts during the life of a system and promotes the coexistence and symbiosis of variants throughout. This is done by facilitating a merger of model-based systems engineering processes, tools, and products into a surrogate and common modeling environment in which the operations and sustainment of a system is tied closely to the curation of a descriptive system model. This model-based approach using descriptive system models, traditionally leveraged for system development, is now expanded to include the operational support elements necessary to operate and sustain the system (i.e. executable procedures, command scripts, maintenance manuals, etc. modeled as part of the core system). This evolution on traditional systems engineering implementation, focused on digitally transforming and enhancing system operations and sustainment, capitalizes on the ability of model-based systems engineering to embrace change to improve agility in the later life cycle stages and emphasizes the existence of polymorphic systems engineering (performing a variety of systems engineering roles in simultaneously occurring life cycle stages to increase system agility). A model-based framework for applying the Systems Engineering DevOps life cycle model is introduced as a new Systems Modeling Language profile. A use-case leveraging this “Model-Based System Operations” framework demonstrates how merging operational support elements into a spacecraft system model improves adaptability of support elements in response to faults, failures, and evolving environments during system operations, exemplifying elements of a DevOps approach to cyber-physical system sustainment.
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Lassiter, Chase C. "Systems engineering and management." View electronic thesis (PDF), 2009. http://dl.uncw.edu/etd/2009-3/r1/lassiterc/chaselassiter.pdf.
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Galal, Galal Hassan. "An interpretive approach to information systems engineering (using the grounded systems engineering methodology)." Thesis, Brunel University, 1996. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.285051.
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Devereaux, Jaime E. (Jaime Erin). "Obsolescence : a systems engineering and management approach for complex systems." Thesis, Massachusetts Institute of Technology, 2010. http://hdl.handle.net/1721.1/59233.
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Thesis (S.M. in System Design and Management)--Massachusetts Institute of Technology, Engineering Systems Division, Technology and Policy Program, 2010.Cataloged from PDF version of thesis.
Includes bibliographical references (p. 79-81).
Obsolescence mitigation is an increasingly important aspect of large systems development & maintenance that has often only been considered once obsolescence is imminent. For long lifecycle systems, this has become a major concern as the lifecycles of the components that are encompassed within these systems are often far shorter - up to ten times shorter - than the overall system lifecycle. Many defense systems can be characterized in this manner and therefore require obsolescence mitigation approaches to ensure the continuing ability for the system to perform and evolve. Current system-level obsolescence mitigation practices make recommendations for designing new systems to slow the onset of obsolescence and make the system more flexible when change for obsolescence is required. However, currently fielded systems were often not designed with this in mind. Other obsolescence mitigation techniques focus only on the approach to mitigating component-level obsolescence locally without examining the impact of the change on the system as a whole. This thesis combines the recommended approaches for obsolescence mitigation, the experience and lessons learned for obsolescence mitigation on a real-world case study system gained from interviews with key subject matter experts, along with systems engineering techniques for dealing with engineering change in systems to develop a robust systems engineering and management approach for obsolescence in large complex systems. The thesis provides the reader with a flow chart and a clustered DSM of the tasks along with a checklist that could be used with this obsolescence engineering and management approach.
by Jaime E. Devereaux.
S.M.in System Design and Management
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Ramos, Marcelo Augusto. "Bridging software engineering gaps towards system of systems development." Universidade de São Paulo, 2014. http://www.teses.usp.br/teses/disponiveis/55/55134/tde-13082014-103931/.
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While there is a growing recognition of the importance of System of Systems (SoS), there is still little agreement on just what they are or on by what principles they should be constructed. Actually, there are numerous SoS definitions in the literature. The difficulty in specifying what are the constituent systems, what they are supposed to do, and how they are going to do it frequently lead SoS initiatives to complete failures. Guided by a sample SoS that comprises all the distinguishing SoS characteristics and a generic SoS Engineering (SoSE) process, this thesis explores the SoS development from different Software Engineering (SE) perspectives that include requirements, analysis, design, and reengineering. For the Requirements Engineering (RE), we propose a scene-based RE approach to describe the SoS progressively as an arrangement of elementary but meaningful related behaviors named scenes. The objective is making easier the description and the understanding of the SoS dynamism. For the analysis, we propose extensions to statecharts to visually improve the modeling of systems interactions. They are symbolic notations that result from an analogy with multi-layer Printed Circuit Boards (PCB). The resulting diagrams are named PCBstatecharts. For the design, we propose an extension to the conventional SPLE process in such a way that SPL can become a natural source of SoS members. Domain engineering is extended to deliver components able to share abilities in SoS environments. Then, application engineers can design families of products that comply with different SoS requirements and still improve their products using the abilities of other SoS members. For the reengineering, we propose an approach extension to evolve legacy systems to SPL and then to SoS members. We demonstrate that when legacy systems are reengineered properly, they can share useful abilities, work cooperatively, and compose SoSApesar do crescente reconheciimento da importância de Sistemas de Sistemas (SoS) ainda não há um consenso sobre o que eles são um para que princípios devem ser construídos. De fato, existem várias definições de SoS na literatura. A dificuldade de especificar quais são os sistemas constituintes, as suas tarefas e como eles irão realizá-las frequentemente conduzem iniciativas de SoS ao completo fracasso. Guiados por um exemplo que inclui todas as características distintas de um SoS e um processo genérico de engenharia de SoS (SoSE), esta tese explora o desenvolvimento de SoS a partir de diferentes perspectivas da engenharia de software (SE), que incluem requisitos, análise, projeto e reengenharia. Para a engenharia de requisitos (RE) é proposta uma abordagem para descrever progressivamente um SoS como um arranjo de comportamentos mais simples, porém significativos, denominados \'cenas\'. O objetivo é facilitar a descrição e o entendimento do SoS e seu dinamismo. Para a análise, propõe-se as extensões de statecharts para melhorar a modelagem das interações entre sistemas. Elas são notações simbólicas que resultam de uma analogia com placas de circuito impresso multi camadas (PCB). Os diagramas resultantes são denominados PCB-statecharts. Para o projeto, é proposta uma extensão para o processo convencional de engenharia de linha de produtos (SPLE), de tal forma que linhas de produto (SPL) possam se tornar uma fonte natural de membros para SoS. A engenharia de domínio é estendida para prover componentes capazes de compartilhar habilidades em ambientes de SoS. Desta forma, engenheiros de aplicação podem projetar famílias de produtos complacentes com diferentes requisitos de SoS e ainda melhorar seus produtos usando habilidades de outros membros de um SoS. Para a reengenharia propõe-se extensão de uma abordagem existente para evoluir legados para SPL e depois para membros de um SoS. O objetivo é demonstrar que quando sistemas legados são tratados apropriadamente, eles podem compartilhar habilidades úteis, trabalhar de maneira cooperativa e compor SoS
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Unciano, Conrad Vance. "The systems engineering development of an intelligence information system." Master's thesis, Virginia Tech, 1996. http://hdl.handle.net/10919/46376.
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Hasegawa, Marnie Tardieu. "Systems engineering design for operations directorate administrative information system." Master's thesis, This resource online, 1994. http://scholar.lib.vt.edu/theses/available/etd-10242009-020024/.
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ZERO, ENRICO. "Systems engineering approaches to safety in transport systems." Doctoral thesis, Università degli studi di Genova, 2022. http://hdl.handle.net/11567/1064736.
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During driving, driver behavior monitoring may provide useful information to prevent road traffic accidents caused by driver distraction. It has been shown that 90% of road traffic accidents are due to human error and in 75% of these cases human error is the only cause. Car manufacturers have been interested in driver monitoring research for several years, aiming to enhance the general knowledge of driver behavior and to evaluate the functional state as it may drastically influence driving safety by distraction, fatigue, mental workload and attention. Fatigue and sleepiness at the wheel are well known risk factors for traffic accidents.
The Human Factor (HF) plays a fundamental role in modern transport systems. Drivers and transport operators control a vehicle towards its destination in according to their own sense, physical condition, experience and ability, and safety strongly relies on the HF which has to take the right decisions. On the other hand, we are experiencing a gradual shift towards increasingly autonomous vehicles where HF still constitutes an important component, but may in fact become the "weakest link of the chain", requiring strong and effective training feedback.
The studies that investigate the possibility to use biometrical or biophysical signals as data sources to evaluate the interaction between human brain activity and an electronic machine relate to the Human Machine Interface (HMI) framework. The HMI can acquire human signals to analyse the specific embedded structures and recognize the behavior of the subject during his/her interaction with the machine or with virtual interfaces as PCs or other communication systems. Based on my previous experience related to planning and monitoring of hazardous material transport, this work aims to create control models focused on driver behavior and changes of his/her physiological parameters. Three case studies have been considered using the interaction between an EEG system and external device, such as driving simulators or electronical components. A case study relates to the detection of the driver's behavior during a test driver. Another case study relates to the detection of driver's arm movements according to the data from the EEG during a driver test. The third case is the setting up of a Brain Computer Interface (BCI) model able to detect head movements in human participants by EEG signal and to control an electronic component according to the electrical brain activity due to head turning movements. Some videos showing the experimental results are available at https://www.youtube.com/channel/UCj55jjBwMTptBd2wcQMT2tg.
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Savage, Guy. "Holacratic Engineering Management| A Lean Enterprise System Engineering Innovation." Thesis, The George Washington University, 2018. http://pqdtopen.proquest.com/#viewpdf?dispub=10785338.
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Based on a belief that innovation is increased by Holacratic Engineering Management practices distributing authority to engaged, autonomous, decision makers versus traditional corporate, hierarchical, and delegated decision making, this research examines the relationship between holacratic engineering management and company innovative performance. This proposed new, chaordic, systems engineering and engineering management process, inherently disruptive and arising out of the agile software and lean systems engineering disciplines, is explored using systems thinking and model-based systems engineering principles. This research effort examining Holacratic Engineering Management, an adoptive innovation of lean and agile engineering concepts as a convergence of Holacracy and Lean Enterprise System Engineering includes case studies measuring the effects of Holacratic Engineering Management and Lean Enterprise Systems Engineering on performance. Using soft systems methodology, multiple linear regression is performed on 18 companies that design, develop, and deliver prepackaged software. The theoretical model consists of five component values comprising the holacracy measurements. Companies embracing Holacratic Engineering Management have significantly improved innovation performance.
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Brandstätter, Markus Franz. "Kompatibilitätsmodellierung im Systems-engineering-Umfeld." München Verl. Dr. Hut, 2009. http://d-nb.info/997426543/04.
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Saenz, Oscar Alejandro. "Framework for Enterprise Systems Engineering." FIU Digital Commons, 2005. http://digitalcommons.fiu.edu/etd/32.
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This research aimed at developing a research framework for the emerging field of enterprise systems engineering (ESE). The framework consists of an ESE definition, an ESE classification scheme, and an ESE process. This study views an enterprise as a system that creates value for its customers. Thus, developing the framework made use of system theory and IDEF methodologies. This study defined ESE as an engineering discipline that develops and applies systems theory and engineering techniques to specification, analysis, design, and implementation of an enterprise for its life cycle. The proposed ESE classification scheme breaks down an enterprise system into four elements. They are work, resources, decision, and information. Each enterprise element is specified with four system facets: strategy, competency, capacity, and structure. Each element-facet combination is subject to the engineering process of specification, analysis, design, and implementation, to achieve its pre-specified performance with respect to cost, time, quality, and benefit to the enterprise. This framework is intended for identifying research voids in the ESE discipline. It also helps to apply engineering and systems tools to this emerging field. It harnesses the relationships among various enterprise aspects and bridges the gap between engineering and management practices in an enterprise. The proposed ESE process is generic. It consists of a hierarchy of engineering activities presented in an IDEF0 model. Each activity is defined with its input, output, constraints, and mechanisms. The output of an ESE effort can be a partial or whole enterprise system design for its physical, managerial, and/or informational layers. The proposed ESE process is applicable to a new enterprise system design or an engineering change in an existing system. The long-term goal of this study aims at development of a scientific foundation for ESE research and development.
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Kamsah, M. Z. K. "Process engineering information management systems." Thesis, Swansea University, 1997. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.637752.
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The way engineers and engineering companies do their work has significantly changed over the past twenty years. This is mainly due to the simultaneous development of computers (particularly personal computers) and software. Most engineers are likely to use several engineering application programs and mainstream software packages. Hence, information from one application must be capable of being transferred into other packages for further processing or analysing and reporting or documentation purposes. This thesis aims to investigate aspects of data management and applications integration in process engineering design. It proposes a new method and model for data storage, manipulation and representation, on which new process design environments may be based. Several aspects of integrated process design database systems are examined, including data models, data handling, program control and integration. A system called PREMIS has been developed which uses an object-oriented approach to data management. It utilises templates which mimic specification sheets used in process industry for defining objects in a design environment. The use of methods promotes a consistent look and feel to the tools in the environment. The application of PREMIS to a real process engineering design example illustrates the benefits of object-oriented techniques to the process systems and design community. Templates can be manipulated as entities. They are displayed on the screen where they serve as the data input device for design information. Data on the templates and stored in the database can be shared and accessed directly by design programs. The dynamic nature of the object definitions encourages experimentation with the new data types and methods. The system also aims to demonstrate the advantages of employing advanced integration features of the Microsoft Windows operating system.
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Messom, Christopher H. "Engineering reliable neural network systems." Thesis, Loughborough University, 1992. https://dspace.lboro.ac.uk/2134/14137.
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This thesis presents a study of neural network representation and behaviour. The study places neural networks in the context of designing reliable systems. Several new results on network size and topology are presented. Knowledge based training of neural networks is examined. This is essential for designing reliable neural systems in which the subsymbolic reasoning processes are well defined. Sandwich nodes are introduced and studied as atomic knowledge elements in neural networks. Two new network architectures are introduced, the Loughborough Net and the Loughborough Control Net. These make use of the parallelism inherent in sandwich node representations. The interpretation of neural network representations as logical transformations and rule systems are presented. An equivalence of the rule systems and neural network representation is proposed and discussed. This equivalence is required in order that the total behaviour of the neural network can be understood. A new methodology for designing reliable neural network systems making use of knowledge based training is proposed. This is used to present a general design methodology for the construction of. reliable neural network control systems using the Loughborough Control Net architecture. A case study is discussed where the methodology was applied to the design of an adhesive dispensing controller.
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Ding, Qinghua. "Intelligent systems engineering in anaesthesia." Thesis, University of Sheffield, 1999. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.310761.
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AlMhana, Abdulrahman. "Lean Supply Chain Systems Engineering." Digital Commons at Loyola Marymount University and Loyola Law School, 2013. https://digitalcommons.lmu.edu/etd/336.
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Dickson, Caskey L. "Systems Engineering Applied to CycleSimulator." Digital Commons at Loyola Marymount University and Loyola Law School, 2007. https://digitalcommons.lmu.edu/etd/385.
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Kaiser, Jonathan. "Applying Systems Engineering to Life." Digital Commons at Loyola Marymount University and Loyola Law School, 2011. https://digitalcommons.lmu.edu/etd/413.
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This project treats life as a system of systems. As with all systems of systems, life can be vastly improved with the use of Systems Engineering tools. Architectures, Project Management, Quality, Lean Thinking, and Ethics play key roles in Systems Engineering. The tools of those practices can be easily manipulated to organize, simplify, and improve one's life.
The wants and needs of individuals can be translated into requirements and further derived into a full requirements document. Specifications can be made and requirements can be verified. The interactions between different aspects of life can be depicted and further understood through architectural diagrams.
Treating life as an already working system, Quality principles can be applied to make sure that one is producing a set of products that meet the stakeholder needs. Everyday recurring tasks can be analyzed and Lean techniques can be applied to increase throughput or just free up time. Complex tasks can be worked out through Project Management techniques. People in our lives can be associated as resources.
Ethics touches every aspect of our lives. A personal code of ethics is usually not written but comes from parents and/or faith in a higher power.
Through this project, I plan to use Systems Engineering techniques to organize, simplify, and improve my life.
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Conejeros, Raul. "Optimisation of biochemical engineering systems." Thesis, University of Cambridge, 2000. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.621770.
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Garcia, Marques Mª Emilia. "Engineering Regulated Open Multiagent Systems." Doctoral thesis, Universitat Politècnica de València, 2013. http://hdl.handle.net/10251/28588.
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Actualmente existe una creciente demanda de sistemas flexibles, adaptables y con gran escalabilidad para apoyar las interacciones de personas e instituciones distribuidas en entornos heterogéneos. Esto se debe principalmente al incremento en la necesidad de trabajo colaborativo y la descentralización de los procesos en muchos dominios de aplicación. Por lo general, estas aplicaciones de software deben seguir legislaciones y normativas específicas, es decir, las entidades que participan en el sistema tienen derechos, deberes y restricciones específicas. Al igual que en otros trabajos del área, en esta tesis se utiliza el término sistemas normativos abiertos para referirse a los sistemas de este tipo. El desarrollo de sistemas normativos abiertos puede producir importantes beneficios para las compañías que los usen, ya que permiten la comunicación de instituciones, entidades heterogéneas y diferentes dispositivos con el fin de lograr tanto los objetivos globales del sistema como los individuales de cada institución y entidad. Sin embargo, también hay algunas cuestiones importantes que potencialmente pueden complicar el análisis, diseño e implementación de estos sistemas. La mayoría de estos problemas están relacionados con la interoperabilidad de sus procesos, la privacidad, la combinación de los objetivos individuales y la combinación de las restricciones y la legislación de cada una de las entidades del sistema. Por lo tanto, es necesario el uso de métodos de ingeniería del software y herramientas de desarrollo para hacer frente a estos problemas y guiar a los desarrolladores durante el proceso de desarrollo.
La tecnología basada en sistemas multiagente (SMA) es considerada una buena candidata para el desarrollo de sistemas normativos abiertos. Durante los últimos años, el uso de las tecnologías SMA se ha incrementado no sólo en el ámbito académico, sino también en el desarrollo e implementación de aplicaciones industriales. Los SMA se han establecido como un paradigma de la ingeniería de software para la creación de sistemas adaptativos complejos, en
entornos distribuidos y heterogéneos. Esta tesis se centra en el análisis y diseño de sistemas normativos abiertos utilizando la tecnología SMA. Algunas metodologías SMA se dedican al desarrollo de sistemas de este tipo. Sin embargo, después de analizar en qué medida las metodologías SMA actuales soportan el análisis y el diseño de estos sistemas, podemos concluir que todavía hay importantes problemas a resolver en el área. Algunos de estos problemas son la integración del contexto normativo del sistema durante el proceso de desarrollo, la falta de directrices para identificar y formalizar este contexto normativo, la falta de técnicas de validación y verificación que garanticen la coherencia del diseño final respecto a los requisitos del sistema, la coherencia entre los objetivos individuales, y la coherencia de las restricciones de cada entidad respecto al contexto normativo del sistema global.
La principal aportación de esta tesis es una nueva metodología SMA llamada ROMAS (Sistemas Multiagente Regulados y Abiertos), que se centra en el análisis y diseño de procesos para el desarrollo de sistemas multiagente organizacionales, donde los agentes interactúan por medio de servicios estándares, y donde las relaciones sociales y contractuales se formalizan mediante normas y contratos. La metodología ROMAS define un proceso de desarrollo orientado a agentes y proporciona guías específicas para identificar y formalizar el marco normativo del sistema, así como las comunicaciones y los intercambios de servicios y recursos. ROMAS especifica tanto el comportamiento global del sistema como las características individuales de cada entidad. En la metodología ROMAS, agentes, roles y organizaciones se definen a través de una estructura social formal basada en un arquitectura orientada a servicios. Aquí, las organizaciones representan un conjunto de personas e instituciones que tienen que coorGarcia Marques, ME. (2013). Engineering Regulated Open Multiagent Systems [Tesis doctoral no publicada]. Universitat Politècnica de València. https://doi.org/10.4995/Thesis/10251/28588
TESIS
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de, Souza Roy Alphonso. "Maturity curve of Systems Engineering." Thesis, Monterey, Calif. : Naval Postgraduate School, 2008. http://edocs.nps.edu/npspubs/scholarly/theses/2008/Dec/08Dec%5FdeSouza.pdf.
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Thesis (M.S. in Systems Engineering)--Naval Postgraduate School, December 2008.Thesis Advisor(s): Langford, Gary Oliver "December 2008." Description based on title screen as viewed on January 29, 2009. Includes bibliographical references (p. 75-81). Also available in print.
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Van, Voorhees Franklin David. "Competitive control in systems engineering." Diss., The University of Arizona, 1995. http://hdl.handle.net/10150/187143.
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The three main difficulties of the product development process are non-convexity, uncertainty, and multiobjectivity. Because of these problems, the product development process is characterized using two metaphors. The first metaphor is navigating in uncharted waters. The second is the development process as a competition among the various objectives that must be satisfied, including the need to minimize costs and maximize performance. Both of these metaphors lead to the concept of 'good directions' for guiding the development process. Methods of obtaining 'good directions' are described, and fuzziness is recruited to deal with the uncertainties in the direction-finding process. The two main approaches to product development are the optimizing approach and the combinative approach. Experimental designs and genetic algorithms are suggested for efficiently investigating the design space through the correct use of models and prototypes. Experimental designs can be used as part of either the optimizing or the combinative approaches, while the genetic algorithm is more effective for the combinative approach. An innovative approach to robust design is introduced which emphasizes three-level factorial experimental designs. In addition, models of competition are examined as a means of understanding the concepts of competition which are applicable to system theory and systems engineering. Case studies describing the Manhattan Project and the Polaris Program help to illustrate the role of competition in product development.
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Thiers, George. "A model-based systems engineering methodology to make engineering analysis of discrete-event logistics systems more cost-accessible." Diss., Georgia Institute of Technology, 2014. http://hdl.handle.net/1853/52259.
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This dissertation supports human decision-making with a Model-Based Systems Engineering methodology enabling engineering analysis, and in particular Operations Research analysis of discrete-event logistics systems, to be more widely used in a cost-effective and correct manner. A methodology is a collection of related processes, methods, and tools, and the process of interest is posing a question about a system model and then identifying and building answering analysis models. Methods and tools are the novelty of this dissertation, which when applied to the process will enable the dissertation's goal.
One method which directly enables the goal is adding automation to analysis model-building. Another method is abstraction, to make explicit a frequently-used bridge to analysis and also expose analysis model-building repetition to justify automation. A third method is formalization, to capture knowledge for reuse and also enable automation without human interpreters. The methodology, which is itself a contribution, also includes two supporting tool contributions.
A tool to support the abstraction method is a definition of a token-flow network, an abstract concept which generalizes many aspects of discrete-event logistics systems and underlies many analyses of them. Another tool to support the formalization method is a definition of a well-formed question, the result of an initial study of semantics, categories, and patterns in questions about models which induce engineering analysis. This is more general than queries about models in any specific modeling language, and also more general than queries answerable by navigating through a model and retrieving recorded information.
A final contribution follows from investigating tools for the automation method. Analysis model-building is a model-to-model transformation, and languages and tools for model-to-model transformation already exist in Model-Driven Architecture of software. The contribution considers if and how these tools can be re-purposed by contrasting software object-oriented code generation and engineering analysis model-building. It is argued that both use cases share a common transformation paradigm but executed at different relative levels of abstraction, and the argument is supported by showing how several Operations Research analyses can be defined in an object-oriented way across multiple layered instance-of abstraction levels.
Enabling Operations Research analysis of discrete-event logistics systems to be more widely used in a cost-effective and correct manner requires considering fundamental questions about what knowledge is required to answer a question about a system, how to formally capture that knowledge, and what that capture enables. Developments here are promising, but provide only limited answers and leave much room for future work.
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Dogan, Huseyin. "Managing knowledge for capability engineering." Thesis, Loughborough University, 2013. https://dspace.lboro.ac.uk/2134/14098.
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The enterprises that deliver capability are trying to evolve into through-life businesses by shifting away from the traditional pattern of designing and manufacturing successive generations of products, towards a new paradigm centred on support, sustainability and the incremental enhancements of existing capabilities from technology insertions and changes to process. The provision of seamless through-life customer solutions depends heavily on management of information and knowledge between, and within the different parts of the supply chain enterprise. This research characterised and described Capability Engineering (CE) as applied in the defence enterprise and identified to BAE Systems important considerations for managing knowledge within that context. The terms Capability Engineering and Through Life Capability Management (TLCM), used synonymously in this thesis, denote a complex evolving domain that requires new approaches to better understand the different viewpoints, models and practices. The findings and novelty of this research is demonstrated through the following achievements: • Defined the problem space that Requirements Engineers can use in through-life management projects. • Made a contribution to the development of models for Systems Architects to enable them to incorporate 'soft' systems within their consideration. • Independently developed a TLCM activity model against which BAE Systems validated the BAE Systems TLCM activity model, which is now used by UK Ministry of Defence (MoD). • Developed, and published within INCOSE1, the INCOSE Capability Engineering ontology. • Through the novel analysis of a directly applicable case study, highlighted to Functional Delivery Managers the significance of avoiding the decoupling of information and knowledge in the context of TLCM. • Through experimentation and knowledge gained within this research, identified inadequacies in the TechniCall (rapid access to experts) service which led to the generation of requirements for an improved service which is now being implemented by BAE Systems. The results showed that managing knowledge is distinct when compared to information management. Over-reliance on information management in the absence of tacit knowledge can lead to a loss in the value of the information, which can result in unintended consequences. Capability is realised through a combination of component systems and Capability Engineering is equivalent to a holistic perspective of Systems Engineering. A sector-independent Capability Engineering ontology is developed to enable semantic interoperability between different domains i.e. defence, rail and information technology. This helped to better understand the dependencies of contributing component systems within defence, and supported collaboration across different domains. Although the evaluation of the ontology through expert review has been accomplished; the ontology, KM analysis framework and soft systems transitioning approach developed still need to undergo independent verification and validation. This requires application to other case studies to check and exploit their suitability. This Engineering Doctorate research has been disseminated through a number of peer reviewed publications.
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London, Brian (Brian N. ). "A model-based systems engineering framework for concept development." Thesis, Massachusetts Institute of Technology, 2012. http://hdl.handle.net/1721.1/70822.
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Thesis (S.M. in Engineering and Management)--Massachusetts Institute of Technology, Engineering Systems Division, 2012.Cataloged from PDF version of thesis.
Includes bibliographical references (p. 148-151).
The development of increasingly complex, innovative systems under greater constraints has been the trend over the past several decades. In order to be successful, organizations must develop products that meet customer needs more effectively than the competitors' alternatives. The development of these concepts is based on a broad set of stakeholder objectives, from which alternative designs are developed and compared. When properly performed, this process helps those involved understand the benefits and drawbacks of each option. This is crucial as firms need to effectively and quickly explore many concepts, and easily determine those most likely to succeed. It is generally accepted that a methodical design approach leads to the reduction in design flaws and cost over a product's life cycle. Several techniques have been developed to facilitate these efforts. However, the traditional tools and work products are isolated, and require diligent manual inspection. It is expected that the effectiveness of the high-level product design and development will improve dramatically through the adoption of computer based modeling and simulation. This emerging capability can mitigate the challenges and risks imposed by complex systems by enforcing rigor and precision. Model-based systems engineering (MBSE) is a methodology for designing systems using interconnected computer models. The recent proliferation of MBSE is evidence of its ability to improve the design fidelity and enhance communication among development teams. Existing descriptions of leveraging MBSE for deriving requirements and system design are prevalent. However, very few descriptions of model-based concept development have been presented. This may be due to the lack of MBSE methodologies for performing concept development. Teams that attempt a model-based approach without well defined, structured strategy are often unsuccessful. However, when MBSE is combined with a clear methodology, designs can be more efficiently generated and evaluated. While it may not be feasible to provide a "standard" methodology for concept development, a framework is envisioned that incorporates a variety of methods and techniques. This thesis proposes such a framework and presents an example based on a simulated concept development effort.
by Brian London.
S.M.in Engineering and Management
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Smith, Philip Hartley. "Electrical Distribution Modeling:An Integration of Engineering Analysis and Geographic Information Systems." Thesis, Virginia Tech, 2005. http://hdl.handle.net/10919/36158.
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This thesis demonstrates the value of integrating electrical distribution engineering analysis with Geographic Information Systems (GIS). The 37-Node IEEE Feeder model was used as the base distribution system in this study. It was modeled separately, both in software capable of unbalanced load-flow and in an industry-standard GIS environment. Both tools utilized were commercially available, off-the shelf products indicative of those used in academia and in basic GIS installations. The foundational data necessary to build these models is representative of information required by a variety of utility departments for a multitude of applications. It is inherent to most systems within an enterprise-level, business-wide data model and therefore can be used to support a variety of applications. In this instance, infrastructure information is assumed to be managed and housed with the GIS. This data provides the required information as input for load-flow calculations. The engineering analysis is performed within DistributionSystem 4.01 and its output is passed back to the GIS in tabular format for incorporation. This thesis investigates the transfer of information between GIS and DistributionSystem 4.01 and demonstrates the extended display capabilities in the GIS environment. This research is implemented on a small scale, but is intended to highlight the need for standardization and automatic integration of these systems as well as others that are fundamental to the effective management of electrical distribution systems.Master of Science
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Schwarz, Eric W. "System engineering trade studies : an enhanced technique for systems integration /." Master's thesis, This resource online, 1992. http://scholar.lib.vt.edu/theses/available/etd-12162009-020038/.
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Koubeissi, Ahmad. "Methodology for unified modeling of system of systems of engineering." Thesis, Lille 1, 2015. http://www.theses.fr/2015LIL10143/document.
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L'objectif principal de cette thèse est la contribution à la modélisation graphique multi-niveaux, à la fois comportementale et organisationnelle pour la conception d’un système de systèmes d’ingénierie. Dans le présent travail, nous avons modélisé l’échange d’information entre les composants des systèmes, en présence des imperfections, avec un outil de modélisation graphique Bond Graph, décrivant l’échange de puissance dans les systèmes multi-domaines. Ce modèle permet d'identifier mathématiquement, la qualité du signal reçu par un composant système, suivant les perturbations apparentes dans le canal de transmission. Nous avons mené une expérience sur le comportement coopératif entre deux humanoïdes dans le cadre d’un système de systèmes. Ensuite, nous avons élaboré une méthode qualitative pour identifier le niveau de tolérance aux fautes sur un lien de communication, permettant ainsi d'introduire le principe de liens redondants dans le système de systèmes. Ensuite, nous avons proposé une méthodologie de modélisation hiérarchisée et hybride, combinant à la fois l’hypergraphe et le Bond Graph. Le premier est utilisé pour l’analyse organisationnelle multi-niveaux, tandis que le second est utilisé pour l’analyse comportementale des composants systèmes élémentaires. Enfin, pour valider cette approche de modélisation, un système de systèmes a été réalisé, composé d’un véhicule aérien sans pilote (UAV) et un véhicule autonome intelligent, dans laquelle l’UAV fournit des informations de navigation redondantes au véhicule autonome intelligent, pour être en mesure de manœuvrer en toute sécurité dans un espace confiné, lors de pertes des informations liées à la navigation localeThe main focus of this thesis is on multilevel graphical modeling of behavior and organization of a set of component systems in a System of Systems concept. In the present work, we model the wireless communication link among component systems, with all its major effects, using a graphical modeling tool for describing flow of power in multi-physics domain called Bond Graph. This model permits identifying mathematically, the quality of signal received at information sink based on model parameter values. We conduct an experiment on cooperative behavior of two humanoids in a system of systems concept and demonstrate how we are able to experimentally measure the parameter values defined in our model.Next we justify how we are able to evaluate quantitatively, the fault tolerance level of a wireless communication link and introduce the need for redundant links in system of systems. Then we propose a methodology for coupling Hyper Graph, used for modeling the organization of component systems, and Bond Graph in multilevel graphical modeling of system of systems. Finally, we discuss another system of systems with two cooperating component systems, a Unmanned Aerial Vehicle (UAV) and an intelligent autonomous vehicle (robuTAINer), in which the UAV will supply navigation information to the intelligent autonomous vehicle to be able to safely maneuver in a confined space. We develop algorithms for robuTAINer detection and navigation from UAV. Then we practically test our algorithms and analyze the obtained results
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Sinclair, Kirsten Mhairi. "The impact of petri nets on system-of-systems engineering." Thesis, Durham University, 2009. http://etheses.dur.ac.uk/212/.
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The successful engineering of a large-scale system-of-systems project towards deterministic behaviour depends on integrating autonomous components using international communications standards in accordance with dynamic requirements. To-date, their engineering has been unsuccessful: no combination of top-down and bottom-up engineering perspectives is adopted, and information exchange protocol and interfaces between components are not being precisely specified. Various approaches such as modelling, and architecture frameworks make positive contributions to system-of-systems specification but their successful implementation is still a problem. One of the most popular modelling notations available for specifying systems, UML, is intuitive and graphical but also ambiguous and imprecise. Supplying a range of diagrams to represent a system under development, UML lacks simulation and exhaustive verification capability. This shortfall in UML has received little attention in the context of system-of-systems and there are two major research issues: 1. Where the dynamic, behavioural diagrams of UML can and cannot be used to model and analyse system-of-systems 2. Determining how Petri nets can be used to improve the specification and analysis of the dynamic model of a system-of-systems specified using UML This thesis presents the strengths and weaknesses of Petri nets in relation to the specification of system-of-systems and shows how Petri net models can be used instead of conventional UML Activity Diagrams. The model of the system-of-systems can then be analysed and verified using Petri net theory. The Petri net formalism of behaviour is demonstrated using two case studies from the military domain. The first case study uses Petri nets to specify and analyse a close air support mission. This case study concludes by indicating the strengths, weaknesses, and shortfalls of the proposed formalism in system-of-systems specification. The second case study considers specification of a military exchange network parameters problem and the results are compared with the strengths and weaknesses identified in the first case study. Finally, the results of the research are formulated in the form of a Petri net enhancement to UML (mapping existing activity diagram elements to Petri net elements) to meet the needs of system-of-systems specification, verification and validation.
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Ramos, Ana Luísa Ferreira Andrade. "Model-based systems engineering: a system for traffic & environment." Doctoral thesis, Universidade de Aveiro, 2011. http://hdl.handle.net/10773/7273.
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Doutoramento em Gestão IndustrialThe contemporary world is crowded of large, interdisciplinary, complex systems made of other systems, personnel, hardware, software, information, processes, and facilities. The Systems Engineering (SE) field proposes an integrated holistic approach to tackle these socio-technical systems that is crucial to take proper account of their multifaceted nature and numerous interrelationships, providing the means to enable their successful realization. Model-Based Systems Engineering (MBSE) is an emerging paradigm in the SE field and can be described as the formalized application of modelling principles, methods, languages, and tools to the entire lifecycle of those systems, enhancing communications and knowledge capture, shared understanding, improved design precision and integrity, better development traceability, and reduced development risks. This thesis is devoted to the application of the novel MBSE paradigm to the Urban Traffic & Environment domain. The proposed system, the GUILTE (Guiding Urban Intelligent Traffic & Environment), deals with a present-day real challenging problem “at the agenda” of world leaders, national governors, local authorities, research agencies, academia, and general public. The main purposes of the system are to provide an integrated development framework for the municipalities, and to support the (short-time and real-time) operations of the urban traffic through Intelligent Transportation Systems, highlighting two fundamental aspects: the evaluation of the related environmental impacts (in particular, the air pollution and the noise), and the dissemination of information to the citizens, endorsing their involvement and participation. These objectives are related with the high-level complex challenge of developing sustainable urban transportation networks. The development process of the GUILTE system is supported by a new methodology, the LITHE (Agile Systems Modelling Engineering), which aims to lightening the complexity and burdensome of the existing methodologies by emphasizing agile principles such as continuous communication, feedback, stakeholders involvement, short iterations and rapid response. These principles are accomplished through a universal and intuitive SE process, the SIMILAR process model (which was redefined at the light of the modern international standards), a lean MBSE method, and a coherent System Model developed through the benchmark graphical modeling languages SysML and OPDs/OPL. The main contributions of the work are, in their essence, models and can be settled as: a revised process model for the SE field, an agile methodology for MBSE development environments, a graphical tool to support the proposed methodology, and a System Model for the GUILTE system. The comprehensive literature reviews provided for the main scientific field of this research (SE/MBSE) and for the application domain (Traffic & Environment) can also be seen as a relevant contribution.
O mundo contemporâneo é caracterizado por sistemas de grande dimensão e de natureza marcadamente complexa, sócio-técnica e interdisciplinar. A Engenharia de Sistemas (ES) propõe uma abordagem holística e integrada para desenvolver tais sistemas, tendo em consideração a sua natureza multifacetada e as numerosas inter-relações que advêm de uma quantidade significativa de diferentes pontos de vista, competências, responsabilidades e interesses. A Engenharia de Sistemas Baseada em Modelos (ESBM) é um paradigma emergente na área da ES e pode ser descrito como a aplicação formal de princípios, métodos, linguagens e ferramentas de modelação ao ciclo de vida dos sistemas descritos. Espera-se que, na próxima década, a ESBM desempenhe um papel fundamental na prática da moderna Engenharia de Sistemas. Esta tese é dedicada à aplicação da ESBM a um desafio real que constitui uma preocupação do mundo actual, estando “na agenda” dos líderes mundiais, governantes nacionais, autoridades locais, agências de investigação, universidades e público em geral. O domínio de aplicação, o Tráfego & Ambiente, caracteriza-se por uma considerável complexidade e interdisciplinaridade, sendo representativo das áreas de interesse para a ES. Propõe-se um sistema (GUILTE) que visa dotar os municípios de um quadro de desenvolvimento integrado para adopção de Sistemas de Transporte Inteligentes e apoiar as suas operações de tráfego urbano, destacando dois aspectos fundamentais: a avaliação dos impactos ambientais associados (em especial, a poluição atmosférica e o ruído) e a divulgação de informação aos cidadãos, motivando o seu envolvimento e participação. Estes objectivos relacionam-se com o desafio mais abrangente de desenvolver redes de transporte urbano sustentáveis. O processo de desenvolvimento do sistema apoia-se numa nova metodologia (LITHE), mais ágil, que enfatiza os princípios de comunicação contínua, feedback, participação e envolvimento dos stakeholders, iterações curtas e resposta rápida. Estes princípios são concretizados através de um processo de ES universal e intuitivo (redefinido à luz dos padrões internacionais), de um método simples e de linguagens gráficas de modelação de referência (SysML e OPDs/OPL). As principais contribuições deste trabalho são, na sua essência, modelos: um modelo revisto para o processo da ES, uma metodologia ágil para ambientes de desenvolvimento baseados em modelos, uma ferramenta gráfica para suportar a metodologia proposta e o modelo de um sistema para as operações de tráfego & ambiente num contexto urbano. Contribui-se ainda com uma cuidada revisão bibliográfica para a principal área de investigação (ES/ESBM) e para o domínio de aplicação (Tráfego & Ambiente).
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Unciano, Conrad Vance. "The systems engineering development of a [sic] intelligence information system /." This resource online, 1996. http://scholar.lib.vt.edu/theses/available/etd-12232009-020313/.
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Venkatesh, Saligrama Ramaswamy. "System-identification for complex-systems." Thesis, Massachusetts Institute of Technology, 1997. http://hdl.handle.net/1721.1/10440.
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Aquaro, Matthew. "Systems engineering in practice : the application of systems engineering principles to the development of a hydraulic control system for an automatic transmission." Thesis, Massachusetts Institute of Technology, 2008. http://hdl.handle.net/1721.1/44701.
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Thesis (S.M.)--Massachusetts Institute of Technology, System Design and Management Program, 2008.Includes bibliographical references (p. 71).
Product development in the automotive industry has evolved around the design of components. The organization is established around components and people have a very component centric perspective on problem solving. This has led to local optimization of individual components, while the larger system spirals out of control. The penalty is often measured in terms of development time and cost. New programs are given autonomy to make independent choices without regard for what other programs are doing, which leads to a wide variety of architectures put into place. Program managers and functional managers have different prioritizations. Furthermore, new designs are provided by a separate organization from the group responsible for implementation. They have a very different value system and are unaware of the difficulties experienced in the implementation phase. This type of practice leads to programs nearing production deadlines with poorly optimized systems. Engineers must relearn due to the lack of standardization across program. The team absorbs additional resources from within to fix issues prior to launch. The robbing of resources leads to delays in subsequent programs and the cycle repeats itself. These issues are partly cultural, part organizational, part due to lack of understanding of systems engineering. A new organization is designed, which strengthen the systems perspective and give power to a new role in the organization, the Systems Engineer. The Systems Engineer is chartered with global optimization of the entire system, which includes both functional aspects as well as business aspects like resource availability, development cost and time. They are responsible for developing the complete system, from concept to final implementation. The Design Structure Matrix (DSM) shows the boundaries of the system and reveals new areas where the Systems Engineer can influence the design at lower cost to the organization.
(cont.) The Robustness Checklist, standardization and Systems Architecture provide Systems Engineers tools to change from a component mindset to a systems mindset and to optimize the system as a whole.
by Matthew J. Aquaro.
S.M.
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Case, Denise Marie. "Engineering complex systems with multigroup agents." Diss., Kansas State University, 2015. http://hdl.handle.net/2097/19045.
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Doctor of PhilosophyComputing and Information Sciences
Scott A. DeLoach
As sensor prices drop and computing devices continue to become more compact and powerful, computing capabilities are being embedded throughout our physical environment. Connecting these devices in cyber-physical systems (CPS) enables applications with significant societal impact and economic benefit. However, engineering CPS poses modeling, architecture, and engineering challenges and, to fully realize the desired benefits, many outstanding challenges must be addressed. For the cyber parts of CPS, two decades of work in the design of autonomous agents and multiagent systems (MAS) offers design principles for distributed intelligent systems and formalizations for agent-oriented software engineering (AOSE). MAS foundations offer a natural fit for enabling distributed interacting devices. In some cases, complex control structures such as holarchies can be advantageous. These can motivate complex organizational strategies when implementing such systems with a MAS, and some designs may require agents to act in multiple groups simultaneously. Such agents must be able to manage their multiple associations and assignments in a consistent and unambiguous way. This thesis shows how designing agents as systems of intelligent subagents offers a reusable and practical approach to designing complex systems. It presents a set of flexible, reusable components developed for OBAA++, an organization-based architecture for single-group MAS, and shows how these components were used to develop the Adaptive Architecture for Systems of Intelligent Systems (AASIS) to enable multigroup agents suitable for complex, multigroup MAS. This work illustrates the reusability and flexibility of the approach by using AASIS to simulate a CPS for an intelligent power distribution system (IPDS) operating two multigroup MAS concurrently: one providing continuous voltage control and a second conducting discrete power auctions near sources of distributed generation.
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Abundez, Victor. "Modern Risk Management for Systems Engineering." Digital Commons at Loyola Marymount University and Loyola Law School, 2014. https://digitalcommons.lmu.edu/etd/356.
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The purpose of this paper is to demonstrate the value of an effective risk management process in systems engineering. No engineering project, organization, or entity can be successful without a robust risk avoidance plan in place.
Traditionally, it has been taught that risk management and mitigation serve as a plan, process, or series of steps to avoid negative consequences. In complex organizations or projects, risk management is a large function of the system. Therefore, it is of high importance that the organization to uses this function most effectively and efficiently.
To be most effective, risk management should be considered as something beyond the avoidance of loss or negative consequences. The author of this paper makes the following recommendation: systems engineers should consider risk management as a means to create value and minimize waste. This is an inherently Lean approach, and the approach should be used to balance opportunities and failure. The author of this paper will show this principle to be of high value through case studies of well-known past programs. The document will examine the successes and failures of each and how effectively risk management was applied. Furthermore, it will demonstrate how the risk management team was or was not able to balance opportunity and failure, consequently creating either value or waste.
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Arikan, Merve. "Systems Engineering Process Modeling And Simulation." Master's thesis, METU, 2012. http://etd.lib.metu.edu.tr/upload/12615164/index.pdf.
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In this study, an approach is proposed to model and simulate the systems engineering process of design projects. One of the main aims is to model the systems engineering process, treating the process itself as a complex system. A conceptual model is developed as a result of a two-phase survey conducted with systems engineers. The conceptual model includes two levels of activity networks. Each first level systems engineering activity has its own network of second level activities. The model is then implemented in object oriented modeling language, namely SysML, using block definition diagrams and activity diagrams. Another aim is to generate a discrete event simulation model of the process for performance evaluation. For this purpose the SysML model is transformed to an Arena model using an Excel interface and VBA codes. Three deterministic and three stochastic cases are created to represent systems engineering process alternatives, which originate from the same conceptual model but possess different activity durations, resource availabilities and resource requirements. The scale of the project and the effect of uncertainty in activity durations are also considered. The proposed approach is applied to each of these six cases, developing the SysML models, transforming them to Arena models, and running the simulations. Project duration and resource utilization results are reported for these cases.
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Alim, Seema. "Fuzzy expert systems in civil engineering." Thesis, Imperial College London, 1985. http://hdl.handle.net/10044/1/7183.
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Koistinen, Jari. "Contributions in distributed object systems engineering /." Stockholm, 1998. http://www.lib.kth.se/abs98/kois1218.pdf.
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Camsund, Daniel. "Engineering Transcriptional Systems for Cyanobacterial Biotechnology." Doctoral thesis, Uppsala universitet, Molekylär biomimetik, 2014. http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-223599.
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Cyanobacteria are solar-powered cell factories that can be engineered to supply us with renewable fuels and chemicals. To do so robust and well-working biological parts and tools are necessary. Parts for controlling gene expression are of special importance in living systems, and specifically promoters are needed for enabling and simplifying rational design. Synthetic biology is an engineering science that incorporates principles such as decoupling, standardization and modularity to enable the design and construction of more advanced systems from simpler parts and the re-use of parts in new contexts. For these principles to work, cross-talk must be avoided and therefore orthogonal parts and systems are important as they are decoupled by definition. This work concerns the design and development of biological parts and tools that can enable synthetic biology in cyanobacteria. This encompasses parts necessary for the development of other systems, such as vectors and translational elements, but with a focus on transcriptional regulation. First, to enable the development and characterization of promoters in different cyanobacterial chassis, a broad-host-range BioBrick plasmid, pPMQAK1, was constructed and confirmed to function in several cyanobacterial strains. Then, ribosome binding sites, protease degradation tags and constitutive, orthogonal promoters were characterized in the model strain Synechocystis PCC 6803. These tools were then used to design LacI-regulated promoter libraries for studying DNA-looping and the behaviour of LacI-mediated loops in Synechocystis. Ultimately, this lead to the design of completely repressed LacI-regulated promoters that could be used for e.g. cyanobacterial genetic switches, and was used to design a destabilized version of the repressed promoter that could be induced to higher levels. Further, this promoter was used to implement an orthogonal transcriptional system based on T7 RNAP that was shown to drive different levels of T7 promoter transcription depending on regulation. Also, Gal4-repressed promoters for bacteria were engineered and examined in Escherichia coli as an initial step towards transferring them to cyanobacteria. Attempts were also made to implement a light-regulated one-component transcription factor based on Gal4. This work provides a background for engineering transcription and provides suggestions for how to develop the parts further.
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Karatasios, Labros G. "Software engineering with database management systems." Thesis, Monterey, California. Naval Postgraduate School, 1989. http://hdl.handle.net/10945/27272.
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Birkinshaw, Carl Ian. "Engineering communicative distributed safety-critical systems." Thesis, University of Sheffield, 1995. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.263801.
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