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Using design structure matrices to improve decentralization urban transportation systems; Using DSMs to improve decentralization urban transportation systems

Dunn, Travis P
Fonte: Massachusetts Institute of Technology Publicador: Massachusetts Institute of Technology
Tipo: Tese de Doutorado Formato: 133 p.; 7444773 bytes; 7462072 bytes; application/pdf; application/pdf
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Management of large, complex, urban transportation systems involves numerous stakeholders due to the decentralized ownership and operation of distinct pieces of the physical network. In order to deliver better service to users, many urban regions are adopting technological and operational solutions, both of which necessitate interaction among the decentralized actors. This research applies a systems engineering analysis technique-the design structure matrix (DSM)-in order to improve the efficiency and effectiveness of decentralized organizations involved in urban transportation as they deploy technology and attempt to integrate their operations. DSMs alone provide advantageous, straightforward system representation platforms. Furthermore, clustering algorithms can be applied to DSMs in order to identify potential opportunities to improve the institutional structure of the decentralized system of organizations. We propose DSM representation and clustering as valuable methods for urban regions to identify organizational structures that facilitate both technology deployment through efficient utilization of resources and more effective operations through re-characterizaton of organizational linkages.; by Travis P. Dunn.; Thesis (S.M.)--Massachusetts Institute of Technology...

Framework for enterprise systems engineering

Saenz, Oscar Alejandro
Fonte: FIU Digital Commons Publicador: FIU Digital Commons
Tipo: Artigo de Revista Científica
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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...

Three Approaches to Space Systems Acquisitions and their Application to the Defense Departments Weather Satellite Program

Phillips, Wellington V.G.
Fonte: Monterey, California. Naval Postgraduate School Publicador: Monterey, California. Naval Postgraduate School
Tipo: Tese de Doutorado
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For more than a half century, the United States government has been acquiring and launching satellites. However, throughout these years, there has been a shift in the space systems acquisitions model, from acquiring greater quantities but less complex satellites, to fewer quantities but drastically more complex individualized satellites. Within the past two decades, when a new satellite was to be built, whether as part of an existing generation of satellites or the first of its kind, it appeared that the acquisition process starts over from the beginning as if it was the first time building a satellite. This shift in the model has resulted in these individualized systems being extremely costly and taking a long time to be produced. The acquisition of the Defense Departments Weather Satellites is one such example. This author asserts that effective systems acquisition requires a system engineering-inspired approach. The result of systems engineering guidance is to synthesize general principles from case studies. Therefore, this thesis researched the history of some Air Force Space acquisitions programs, current factors affecting the way systems are acquired, and new approaches (Fast, Inexpensive, Simple, Tiny [FIST], and Evolutionary Acquisition for Space Efficiency [EASE]) that are intended to remedy the aforementioned problems. In addition...

Exploring the use of Model-based Systems Engineering (MBSE) to develop systems architectures in naval ship design

Tepper, Nadia A.
Fonte: Escola de Pós-Graduação Naval Publicador: Escola de Pós-Graduação Naval
Tipo: Tese de Doutorado
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CIVINS; The U.S. Navy designs and operates the most technologically advanced ships in the world. These ships incorporate the latest in weapons technology, phased array antennas, composite structures, signature reduction, survivability, modularity, power systems, computing systems, and automation. The modern day warship is an exceptionally complex system and the design process is long and intricate, spanning several years from feasibility studies to detailed design. Model-Based Systems Engineering (MBSE) has been a recent initiative in the systems engineering community to enhance the systems engineering process by streamlining requirements traceability and improving communication amongst the various stakeholders. MBSE methods have been used in industry to develop systems architecture in a robust and comprehensive manner. In the ship design process, there is a significant need to ensure that the architecture is not only well-defined, but also addresses the needs of the stakeholders. This thesis explores the use of MBSE to develop systems architecture with application to Navy ship design and acquisition.

The maritime preposition force ship 2010

Calvano, Charles N; Harney, Robert C.; Anderson, Thomas; Arrington, Jess; Kan, Joseph; McKerrow, Gary; Vaidyanathan, Rajan; Weekly, Randolph R.
Fonte: Naval Postgraduate School Publicador: Naval Postgraduate School
Tipo: Relatório
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Systems Engineering and Design capstone project.; A systems engineering approach to the design of a ship that will satisfy the requirements for a Maritime Prepositioning Force (MPF) for the year 2010 and beyond is presented. This ship, the MPF 2010, will provide the means by which the United States Marine Corps will be able to successfully employ the tenets of Operational Maneuver From the Sea (OMFTS) and the Ship-to-Objective Maneuver (STOM) against an objective. The current Marine Prepositioning Ship (MPS) suqadrons are used to preposition supplies, vehicles, and equipment throughout the world for use by a Marine Air-Ground Task Force (MAGTF) of Marine Expeditionary Force - Forward, MEF (FWD) size, in times of crisis. However, these squadrons presently require that a secure airfield and port (or beachhead) be available so that the prepositioned MPS assets can be offloaded and married with arriving MAGTF personnel ashore. As such, the current MPS squadrons do not support the concepts of OMFTS and STOM. The MPF 2010 will provide the capability to embark a MEF (FWD), marry the MEF (FWD) with its prepositioned equipment while en route to the objective, and then act as sea base from which it will be able to employ air, ground and amphibious assets to project power ashore.

Space Systems Academic Group Brochure / 2009

Panholzer, Rudolf
Fonte: Monterey, California; Naval Postgraduate School Publicador: Monterey, California; Naval Postgraduate School
Tipo: Brochure
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The Space Systems Academic Group (SSAG) along with eight academic departments is an integral part of the Graduate School of Engineering and Applied Sciences. As an interdisciplinary association of professors it provides direction and guidance for two in-residence curricula: Space Systems Engineering and Space Systems Operations and for the Space Systems Distance Learning program.

System of systems analysis of the global peace operations initiative in U.S. Southern Command

Oh, Daniel
Fonte: Monterey, California. Naval Postgraduate School Publicador: Monterey, California. Naval Postgraduate School
Tipo: Tese de Doutorado
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Approved for public release; distribution is unlimited; In order to improve the operational assessments process of Global Peace Operations Initiative (GPOI) in U.S. Southern Command, this thesis provides a system of systems analysis of the GPOI program. Using systems of systems engineering concepts described by the U.S. Department of Defense and following a systems of systems engineering and integration process model, an operational architecture of GPOI as a system of systems is developed from an analysis of stakeholders, an exploration of the operational concept, an examination of capabilities, a creation of event and interaction models, and an evaluation of governance. The architecture is used to identify friction points and recommend improvements in both process and organization of GPOI. This thesis serves as a foundation for providing appropriate metrics for an effective operational assessment of the GPOI program to a decision maker.

Integrated Instrumentation and Sensor Systems Enabling Condition-Based Maintenance of Aerospace Equipment

Millar, Richard C.
Fonte: Escola de Pós-Graduação Naval Publicador: Escola de Pós-Graduação Naval
Tipo: Artigo de Revista Científica
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The article of record as published may be located at http://dx.doi.org/10.1155/2012/804747; The objective of the work reported herein was to use a systems engineering approach to guide development of integrated instrumentation/sensor systems (IISS) incorporating communications, interconnections, and signal acquisition. These require enhanced suitability and effectiveness for diagnostics and health management of aerospace equipment governed by the principles of Condition-based maintenance (CBM). It is concluded that the systems engineering approach to IISS definition provided clear benefits in identifying overall system requirements and an architectural framework for categorizing and evaluating alternative architectures, relative to a bottom up focus on sensor technology blind to system level user needs. CBM IISS imperatives identified include factors such as tolerance of the bulk of aerospace equipment operational environments, low intrusiveness, rapid reconfiguration, and affordable life cycle costs. The functional features identified include interrogation of the variety of sensor types and interfaces common in aerospace equipment applications over multiplexed communication media with flexibility to allow rapid system reconfiguration to adapt to evolving sensor needs. This implies standardized interfaces at the sensor location (preferably to open standards)...

Converting a manned LCU into an unmanned surface vehicle (USV): an open systems architecture (OSA) case study

Smith, Montrell F.
Fonte: Monterey, California: Naval Postgraduate School Publicador: Monterey, California: Naval Postgraduate School
Tipo: Tese de Doutorado
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Approved for public release; distribution is unlimited; This thesis demonstrates the process by which the concepts of open systems architecture (OSA) might be applied within the context of an existing systems engineering methodology to result in a flexible system. This is accomplished by combining an existing systems engineering process model with OSA management and business principles to execute a successful asset-repurposing program. To demonstrate utility of this OSA approach to systems engineering management, this thesis analyzes an atypical asset-repurposing program: the conversion of a 1610 Class Landing Craft Utility to an unmanned surface vehicle. This thesis shows that OSA technical architecture is best implemented by defining high-level, business and technical flexibility requirements. This thesis argues that proper up-front architecting can balance non-recurring acquisition costs with future recurring lifecycle and modernization costs. A reference model and open standards are used to show the value of interface flexibility. This analysis makes the case for extending the useful service life of a Naval asset via repurposing rather than disposing of the asset, as is traditional. Furthermore, this analysis shows that strategic reuse or repurposing of assets represents an innovative alternative to the traditional sense of new-product acquisition...

System engineering health and visualization

Alonzo, Chester; Besco, Michael; Inman, Theresa; Jourdain, Michael; McNeil, Regina; Sugama, Clive
Fonte: Monterey, California: Naval Postgraduate School Publicador: Monterey, California: Naval Postgraduate School
Tipo: Tese de Doutorado
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Approved for public release; distribution is unlimited; Includes supplementary materials.; Complex warfighter systems are increasingly required for continuing United States dominance, which drives a need for high quality Systems Engineering (SE) processes. A System Engineering Health and Visualization (SEHV) capability is needed so that leadership can gain insight into potential SE risk areas, allowing them to be proactive instead of reactive to issues leading to program failures, thus saving time, effort, and costs. This capstone’s purpose was to determine if an automated means of collecting and displaying SE data trends is feasible and effective. To accomplish this, the team analyzed stakeholder’s requirements and performed a literature study on SE leading indicators. Modeling and simulation was performed to further analyze these requirements and provide the best means to obtain SE health data from Space and Naval Warfare System Center Atlantic (SSC-A). This developed the SEHV architecture to include data integration strategy. A conceptual model for the SEHV capability was produced along with acquisition strategies and cost estimates. The research shows a need to incorporate an automated SEHV system into SSC-A’s organization to improve efficiencies in data calls and management insight into the SE health of a program. Additionally...

Development of a System Engineering Competency Career Development Model: an analytical approach using Bloom’s Taxonomy

Whitcomb, Clifford; Khan, Rabia; White, Corina; Whitcomb, Clifford; Khan, Rabia; White, Corina
Fonte: Monterey, California. Naval Postgraduate School Publicador: Monterey, California. Naval Postgraduate School
Tipo: Relatório
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(FY2014) Technical Report; (FY2014) Technical Report; The Systems Engineering Competency Career Model (SECCM) was designed to assist with career development modeling and in the creation of position descriptions for the Department of Defense (DoD) (Whitcomb, Khan, & White, 2013). To achieve this, thousands of knowledge, skills and abilities (KSAs) were mapped and analyzed using the Bloom’s taxonomic classification schema. Doing so allowed the NPS SECCM researchers to highlight the cognitive and affective learning domains requisite of competent System Engineers (SE). The competency modeling approach resulted in an interactive model, which identifies the KSAs required for DoD systems engineers to be considered competent at various career experience levels. As such, training levels and competency sources are also identified within the model.; The Systems Engineering Competency Career Model (SECCM) was designed to assist with career development modeling and in the creation of position descriptions for the Department of Defense (DoD) (Whitcomb, Khan, & White, 2013). To achieve this, thousands of knowledge, skills and abilities (KSAs) were mapped and analyzed using the Bloom’s taxonomic classification schema. Doing so allowed the NPS SECCM researchers to highlight the cognitive and affective learning domains requisite of competent System Engineers (SE). The competency modeling approach resulted in an interactive model...

Connections in System of Systems

Osmundson, John S.; Langford, Gary O.
Fonte: Published and used by INCOSE with permission. Publicador: Published and used by INCOSE with permission.
Tipo: Artigo de Revista Científica
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Systems of systems are becoming more important in today’s global endeavors. In this paper use of model-based systems engineering is examined from the viewpoint of understanding connections, that is the transfer of items between system of systems. The conclusion is that systems engineering models must include executable models in order to best understand the effects of transfer of items in system of systems.

Total Ship Systems Engineering (TSSE) Program, web page capture

Fonte: Monterey, California: Naval Postgraduate School Publicador: Monterey, California: Naval Postgraduate School
Tipo: Web Page Capture
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Web page capture includes information about the Total Ship Systems Engineering program at NPS such as purpose, eligibility, program requirements, etc.; Purpose:The TSSE program provides a broad-based, systems engineering and design oriented curriculum that focuses on the warship as a total engineering system including hull, mechanical, electrical (HM&E), and combat systems.

A systems approach to modeling drivers of conflict and convergence in the Asia-Pacific region in the next 5-25 years

Whitcomb, Clifford A.; Abdel-Hamid, Tarek; Porter, Wayne; Beery, Paul T.; Wolfgeher, Christopher; Parker, Gary W.; Szczerbinski, Michael
Fonte: Escola de Pós-Graduação Naval Publicador: Escola de Pós-Graduação Naval
Tipo: Relatório
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This project is part of a Strategic Multi-Layer Assessment (SMA) for the U.S. Pacific Command (PACOM). This SMA provides planning support for complex operational imperatives requiring multi-agency, multi-disciplinary solutions that are not currently within core PACOM competencies. The Naval Postgraduate School’s (NPS) contribution overcomes the current conceptualization limitations by using a Systems Dynamics (SD) viewpoint to examine U.S.–China relations. This approach employs systems thinking and systems dynamics methodologies to analyze the policy structures of major issues of concern common to U.S. and China which result in non-linear and dynamic behavior over time. The SD model developed is composed of four sectors of common concern: energy demand and resources, demographics and stability, economics, and military actions. These sector models are used to model tension between the U.S. and China over the next 25 years. Tension was chosen as an underlying surrogate to overall U.S.–China relations. A simulation tool was developed assist policy makers in better understanding how the system's variables are related, how they influence one another, and how they are influenced by the system's external environment. The simulation tool also supports decision / policy making by allowing analysts to explore the effects of these variables on potential futures.; Assistant Secretary of Defense for Research & Engineering/Rapid Fielding Directorate/Rapid Reaction Technology Office; Assistant Secretary of Defense for Research & Engineering/Rapid Fielding Directorate/Rapid Reaction Technology Office (ASD R&E/RFD/RRTO).

Requirements analysis and course improvements for EO3502 telecommunications systems engineering

Turner, Nathan L.; Wagner, Michael D.
Fonte: Monterey, California. Naval Postgraduate School Publicador: Monterey, California. Naval Postgraduate School
Tipo: Tese de Doutorado Formato: xiv, 99 p. : ill. (chiefly col.)
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This thesis evaluated the requirement and provides course improvement recommendations forTelecommunications Systems Engineering EO3502 taught at the Naval Postgraduate School Other graduate programs in Information Technology Management were evaluated to determine the standard for telecommunications engineering expected from some of the most respected academic institutions. Graduates of NPS's Information Technology Management (ITM) and Information Systems andOperations (ISO) curriculums were surveyed to determine how important telecommunicationsengineering is for their follow-on assignments. In addition, lesson topic vignettes were developed toprovide fleet/field examples to reinforce the relevance if individual topics. Finally, recommendationswere provided for improving EO3502 and the ITM curriculum in general.; Approved for public release; distribution is unlimited

Software product line engineering in automotive systems engineering

Thiel, Steffen; O'Brien, Liam; Ali Babar, Muhammad; Botterweck, Goetz
Fonte: SAE Publicador: SAE
Tipo: info:eu-repo/semantics/conferenceObject; all_ul_research; ul_published_reviewed
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peer-reviewed; Product line approaches are well-known in many manufacturing industries, such as consumer electronics, medical systems and automotive [1]. In recent years, approaches with a similar background have rapidly emerged within Software Engineering, so called Software Product Line (SPL) approaches [2], [3]. As automotive manufacturers and suppliers design and implement complex applications, such as driver assistance [4], they strive for mechanisms that allow them to implement such functionality on integrated platforms. This offers the opportunity to build a variety of similar systems with a minimum of technical diversity and thus allows for strategic reuse of components. This has resulted in a growing interest in SPL approaches both in the software engineering and the automotive systems domain. This paper discusses the increasing importance that SPL approaches could play within the context of Automotive Systems Engineering. To accomplish this, we first provide an overview of the major challenges faced by Automotive Systems Engineering [5]. We then present a selection of SPL approaches, which could provide solutions for the described challenges. To complement this we make the case for empirical evaluation as a basis for well-founded decisions and selection of techniques. Finally...

Revisiting the similar process to engineer the contemporary systems

Ramos, Ana Luisa; Ferreira, Jose Vasconcelos; Barcelo, Jaume
Fonte: Springer Verlag Publicador: Springer Verlag
Tipo: Artigo de Revista Científica
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This paper addresses the present-day context of Systems Engineering, revisiting and setting up an updated framework for the SIMILAR process in order to use it to engineer the contemporary systems. The contemporary world is crowded of large interdisciplinary complex systems made of other systems, personnel, hardware, software, information, processes, and facilities. An integrated holistic approach is crucial to develop these systems and take proper account of their multifaceted nature and numerous interrelationships. As the system's complexity and extent grow, the number of parties involved (stakeholders and shareholders) usually also raises, bringing to the interaction a considerable amount of points of view, skills, responsibilities, and interests. The Systems Engineering approach aims to tackle the complex and interdisciplinary whole of those socio-technical systems, providing the means to enable their successful realization. Its exploitation in our modern world is assuming an increasing relevance noticeable by emergent standards, academic papers, international conferences, and post-graduate programmes in the field. This work aims to provide "the picture" of modern Systems Engineering, and to update the context of the SIMILAR process model in order to use this renewed framework to engineer the challenging contemporary systems. The emerging trends in the field are also pointed-out with particular reference to the Model-Based Systems Engineering approach.

Teaching embedded systems engineering in a software-oriented computing degree

Fernandes, João M.; Machado, Ricardo J.
Fonte: IEEE Computer Society Press Publicador: IEEE Computer Society Press
Tipo: Conferência ou Objeto de Conferência
Publicado em /10/2007 Português
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Traditional software-oriented computing degrees do not include courses on embedded systems design in their syllabus, since in the past embedded applications were seen as small-sized solutions developed without the need of engineering approaches. This reality has dramatically changed in the last decade and nowadays several embedded systems are quite complex. Embedded systems present several idiosyncrasies that make their development more difficult and complex than desktop solutions, namely when considering non-functional requirements, time-related deadlines, or the correctness of the solution. To be well prepared for their professions, students of software-oriented computing degrees must acquire skills and competencies in embedded systems engineering. Being able to master high-level programming languages and to develop solutions only for desktop computers means that the students cannot consider numerous opportunities, after graduation. This paper discusses which topics in embedded software design to include in a second cycle degree on Software Engineering that was structured to consider the Bologna Declaration that is now being used in Europe to recast all university degrees. The syllabus of a 15-ECTS module dedicated to teach the fundamental concepts of embedded systems engineering and embedded software development is also described.

Towards a Systems Engineering Essence

Levenchuk, Anatoly
Fonte: Universidade Cornell Publicador: Universidade Cornell
Tipo: Artigo de Revista Científica
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SEMAT/OMG Essence provides a powerful Language and a Kernel for describing software development processes. How can it be tweaked to apply it to systems engineering methods description? We must harmonize Essence and various systems engineering standards in order to provide a more formal system approach to obtaining a Systems Engineering Essence. In this paper, an approach of using Essence for systems engineering is presented. In this approach we partly modified a Kernel only within engineering solution area of concerns and completely preserved Language as an excellent situational method engineering foundation.; Comment: 28 pages. Recommended as an INCOSE Russian chapter product at 99th INCOSE Russian chapter meeting, 28-Jan-2015

System of systems engineering: the link between operational needs and system requirements

Smith,C.J.; Oosthuizen,R.; Harris,H.; Venter,J.P.; Combrink,C.; Roodt,J.H.S.
Fonte: South African Journal of Industrial Engineering Publicador: South African Journal of Industrial Engineering
Tipo: Artigo de Revista Científica Formato: text/html
Publicado em 01/01/2012 Português
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Recently, defence capability development practices have moved towards approaches that include capability-based planning and traditional systems engineering methodologies. Internationally, defence force capability development efforts struggle to bring together intended capability &planning and actual systems on the ground [15], [18]. Smith & Oosthuizen [1] showed that the Capability Life Cycle and System Life Cycle can be unified through the use of System of Systems Engineering methodologies that include Joint Concept Development and Experimentation, Joint Architecture Management, Joint Knowledge Management, and Joint Operational Force Employment. The challenge is to ensure that the actual systems fielded accurately reflect the intended capability; requirements for traceability between the intended capability and the fielded systems must be preserved in the capability decomposition process. This paper proposes a capability decomposition approach that addresses this challenge.