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527 results on '"Singer, Marc"'

56. Using Open Educational Resources and Open Educational Practices in PLA and Competency-Based Education

Author

Singer, Marc P.

Abstract

Since 2001, hundreds of colleges and universities in the United States and around the world have been utilizing and creating open educational resources (OER). Some institutions with support from consortia or foundations create their own resources applying them where appropriate; others simply adapt existing resources. OER exists and is distributed under licenses developed by the Creative Commons organization. This article examines the experiences of using OER for course development at Thomas Edison State University in Trenton, NJ.

Published
2018
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64. Experiments and Molecular Simulations to Study the Effect of Surface-Active Compounds in Mixtures of Model Oils on CO2Corrosion during Intermittent Oil–Water Wetting

Author

Norooziasl, Neda, Qadikolae, Abolfazl Faeli, Young, David, Brown, Bruce, Sharma, Sumit, and Singer, Marc

Abstract

Intermittent oil–water wetting can have a significant effect on the internal corrosion of steel pipelines. This paper presents a combined experimental and molecular modeling study of several influential factors on the surface properties and corrosion behavior of mild steel in CO2environments. The influence of different model oils (LVT-200 and Aromatic-200) and select surface-active compounds (myristic acid, cyclohexane butyric acid, and oleic acid) on the corrosion behavior of carbon steel during intermittent oil–water wetting was determined by measuring the corrosion rate after intermittent wetting cycles. The interfacial tension measurements were performed to study the incorporation of the oil phase along with surface-active molecules in the protective layer formed on the specimen surface. Results showed that the interfacial tension for an aromatic oil–water interface is lower than that for an aliphatic oil–water interface. To understand this result, molecular dynamics simulations of oil–water interfaces were performed in the presence of surface-active molecules and different oils to analyze the structure of the layer formed at the interface. The simulations supported the hypothesis that aromatic molecules are less structured at the interface, which results in the incorporation of more water molecules into the protective layer formed at the steel surface, causing a higher corrosion rate. On the other hand, the simulations revealed that myristic acid in an aliphatic oil forms a well-aligned structure at the interface, devoid of any water molecules. This is in agreement with the hypothesis that the linear molecular structure of myristic acid favors the alignment of molecules at an aliphatic oil–water interface, resulting in a lower interfacial tension and more effective corrosion mitigation as compared to the other two nonlinear compounds tested. It is concluded that an important factor controlling the corrosion behavior is the molecular structure of the oil–water interface, which is adopted by the steel surface layer through the Langmuir–Blodgett process.

Published
2024
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69. Hemorrhoids

Author

Singer, Marc A., Beck, David E., editor, Wexner, Steven D., editor, Hull, Tracy L., editor, Roberts, Patricia L., editor, Saclarides, Theodore J., editor, Senagore, Anthony J., editor, Stamos, Michael J., editor, and Steele, Scott R., editor

Published
2014
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86. Vorwort

Author

Hagel, John, III, Singer, Marc, Hagel, John, III, and Singer, Marc

Published
2000
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88. Hemorrhoids

Author

Singer, Marc, Beck, David E., editor, Roberts, Patricia L., editor, Saclarides, Theodore J., editor, Senagore, Anthony J., editor, Stamos, Michael J., editor, and Wexner, Steven D., editor

Published
2011
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90. Operations Management: Is There a Disconnect between Journal Article Content and Employer Needs?

Author

Singer, Marc G. and Welborn, Cliff A.

Abstract

The authors sought to determine whether topics researched by academicians in the field of operations management were aligned with the knowledge, skills, and abilities (KSAs) employers were seeking from potential employees. Twenty-eight research topics were identified in the operations management literature and were compared to the KSAs derived from 200 online job postings. Ultimately, six research topics were found to be aligned with the KSAs employers were seeking, 10 topics were underrepresented, and 12 topics were overrepresented.

Published
2014
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