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1. A Product Line Systems Engineering Process for Variability Identification and Reduction

Author

Li, Mole, Grigg, Alan, Dickerson, Charles, Guan, Lin, and Ji, Siyuan

Subjects
Computer Science - Software Engineering
Abstract

Software Product Line Engineering has attracted attention in the last two decades due to its promising capabilities to reduce costs and time to market through reuse of requirements and components. In practice, developing system level product lines in a large-scale company is not an easy task as there may be thousands of variants and multiple disciplines involved. The manual reuse of legacy system models at domain engineering to build reusable system libraries and configurations of variants to derive target products can be infeasible. To tackle this challenge, a Product Line Systems Engineering process is proposed. Specifically, the process extends research in the System Orthogonal Variability Model to support hierarchical variability modeling with formal definitions; utilizes Systems Engineering concepts and legacy system models to build the hierarchy for the variability model and to identify essential relations between variants; and finally, analyzes the identified relations to reduce the number of variation points. The process, which is automated by computational algorithms, is demonstrated through an illustrative example on generalized Rolls-Royce aircraft engine control systems. To evaluate the effectiveness of the process in the reduction of variation points, it is further applied to case studies in different engineering domains at different levels of complexity. Subject to system model availability, reduction of 14% to 40% in the number of variation points are demonstrated in the case studies., Comment: 12 pages, 6 figures, 2 tables; submitted to the IEEE Systems Journal on 3rd June 2018

Published
2018
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2. Integrating Existing Safety Analyses into SysML

Author

Clegg, Kester, Li, Mole, Stamp, David, Grigg, Alan, McDermid, John, Goos, Gerhard, Founding Editor, Hartmanis, Juris, Founding Editor, Bertino, Elisa, Editorial Board Member, Gao, Wen, Editorial Board Member, Steffen, Bernhard, Editorial Board Member, Woeginger, Gerhard, Editorial Board Member, Yung, Moti, Editorial Board Member, Papadopoulos, Yiannis, editor, Aslansefat, Koorosh, editor, Katsaros, Panagiotis, editor, and Bozzano, Marco, editor

Published
2019
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3. A SysML Profile for Fault Trees—Linking Safety Models to System Design

Author

Clegg, Kester, Li, Mole, Stamp, David, Grigg, Alan, McDermid, John, Goos, Gerhard, Founding Editor, Hartmanis, Juris, Founding Editor, Bertino, Elisa, Editorial Board Member, Gao, Wen, Editorial Board Member, Steffen, Bernhard, Editorial Board Member, Woeginger, Gerhard, Editorial Board Member, Yung, Moti, Editorial Board Member, Romanovsky, Alexander, editor, Troubitsyna, Elena, editor, and Bitsch, Friedemann, editor

Published
2019
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6. Chinese International Students' and Faculty Members' Views of Plagiarism in Higher Education

Author

Grigg, Alan

Abstract

As the enrollment of Chinese international students (CIS) increased at a private institution in the Midwest, so did suspected cases of plagiarism. This study addressed the problem of how faculty members grappled with CIS' interpretation and application of Western-based views of plagiarism. The purpose of the study was to identify similarities and differences in the views of these 2 groups. Social cognitive theory, intercultural adaptation theory, and neutralization theory framed this qualitative case study. The research questions focused on how these particular CIS interpreted and applied the Western concept of plagiarism to assignments and exams, the impact of classroom practices and instructional processes on their view and experience, how the faculty members experienced CIS' interpretation and use of Western concepts of plagiarism, and respectively the differences in perceptions of U.S. faculty and of CIS. Eight full-time CIS and 8 faculty members who taught or currently teach CIS were purposefully selected. Data were collected using individual interviews, course syllabi, and plagiarism-related institutional policies. The interview data were analyzed using an ecological perspective to reveal themes; these data were triangulated with the data from course syllabi and institutional policies to ensure research credibility. The results of the study indicated a disconnect between student and faculty perceptions of Western-based contextualized plagiarism, the plagiarism ethos, and academic cultural differences between faculty and CIS that led to the creation of a faculty professional development plan using blended learning focused on cultural differences and teaching methods to deter plagiarism. The results may advance positive social change by improving faculty understanding of CIS and educational practices about plagiarism to better service these students. [The dissertation citations contained here are published with the permission of ProQuest LLC. Further reproduction is prohibited without permission. Copies of dissertations may be obtained by Telephone (800) 1-800-521-0600. Web page: http://www.proquest.com/en-US/products/dissertations/individuals.shtml.]

Published
2016

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