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Articles 91 - 97 of 97
Full-Text Articles in Engineering
Motivation While Designing In Engineering And Technology Education Impacted By Academic Preparation, Nathan Mentzer, Kurt Becker
Motivation While Designing In Engineering And Technology Education Impacted By Academic Preparation, Nathan Mentzer, Kurt Becker
Publications
The purpose of this study was to determine if high school students’ academic preparation was correlated with change in motivation during an engineering design challenge. The research was conducted in a high school classroom in which elements of engineering design were taught in a technology education context to eleventh-grade student from diverse academic backgrounds (measured by grade point average [GPA]). Participant motivation was assessed by the California Measure of Mental Motivation (CM3). The CM3 measures student motivation to apply critical thinking skills and reasoning to solve problems in five subscales: mental focus, learning orientation, creative problem solving, cognitive integrity, and …
Delivering Core Engineering Concepts To Secondary Level Students, Chris Merrill, Rodney L. Custer, Jenny Daugherty, Martin Westrick, Yong Zeng
Delivering Core Engineering Concepts To Secondary Level Students, Chris Merrill, Rodney L. Custer, Jenny Daugherty, Martin Westrick, Yong Zeng
Publications
Within primary and secondary school technology education, engineering has been proposed as an avenue to bring about technological literacy (Lewis, 2005; Dearing & Daugherty, 2004). Different initiatives such as curriculum development projects (i.e., Project ProBase and Project Lead The Way) and National Science Foundation funded projects such as the National Center for Engineering and Technology Education (NCETE) have been developed to infuse engineering into primary and secondary education. For example, one key goal of the technology teacher education component of NCETE is to impact the focus and content of the technology education field at the secondary level (National Center for …
Essential Concepts Of Engineering Design Curriculum In Secondary Technology Education, Robert G. Wicklein, Phillip C. Smith Jr., Soo Jung Kim
Essential Concepts Of Engineering Design Curriculum In Secondary Technology Education, Robert G. Wicklein, Phillip C. Smith Jr., Soo Jung Kim
Publications
Technology education is a field of study that seeks to promote technological literacy for all students. According to a recent study, in the United States, technology education is part of the state framework for 38 states, there are approximately 35,909 middle or high school technology teachers, and technology education is most frequently an elective course (Meade & Dugger, 2004). Indeed, students have an opportunity to learn about the processes and knowledge related to technology that are needed to solve problems and extend human capabilities through technology education. Wright and Lauda (1993) defined technology education as a program designed to help …
Modeling Integrated Decisions For A Municipal Water System With Recourse And Uncertainties: Amman, Jordan, David E. Rosenberg, Jay Lund
Modeling Integrated Decisions For A Municipal Water System With Recourse And Uncertainties: Amman, Jordan, David E. Rosenberg, Jay Lund
Civil and Environmental Engineering Faculty Publications
Stochastic mixed-integer optimization is used to identify a portfolio of long- and short-term supply and conservation actions for a municipal water system to cost-effectively accommodate a distribution of water shortages. Alternative robust, grey-number, and best/worst case formulations systematically explore implications of uncertainties in action costs, life spans, water volumes gained or saved, shortage levels, and shortage probabilities. A detailed example for Amman, Jordan considers 23 potential actions. Results show: (1) remarkable consistency occurs across the different modeling approaches. (2) Conserving water—reducing leakage and targeting select customers to install water efficient appliances—plays an important and growing role over time. (3) A …
Shades Of Grey: A Critical Review Of Grey-Number Optimization, David E. Rosenberg
Shades Of Grey: A Critical Review Of Grey-Number Optimization, David E. Rosenberg
Civil and Environmental Engineering Faculty Publications
A grey number is an uncertain number with fixed lower and upper bounds but unknown distribution. Grey numbers find use in optimization to systematically and proactively incorporate uncertainties expressed as intervals plus communicate resulting stable, feasible ranges for the objective function and decision variables. This article critically reviews their use in linear and stochastic programs with recourse. It summarizes grey model formulation and solution algorithms. It advances multiple counter-examples that yield risk-prone grey solutions that perform worse than a worst-case analysis and do not span the stable feasible range of the decision space. The article suggests reasons for the poor …
A Novel Capacitance Sensor For Fireside Corrosion Measurement, Heng Ban, Zuoping Li
A Novel Capacitance Sensor For Fireside Corrosion Measurement, Heng Ban, Zuoping Li
Mechanical and Aerospace Engineering Faculty Publications
Fireside corrosion in coal-fired power plants is a leading mechanism for boiler tube failures. Online monitoring of fireside corrosion can provide timely data to plant operators for mitigation implementation. This paper presents a novel sensor concept for measuring metal loss based on electrical capacitance. Laboratory-scale experiments demonstrated the feasibility of design, fabrication, and operation of the sensor. The fabrication of the prototype sensor involved sputtering deposition of a thin metal coating with varying thickness on a ceramic substrate. Corrosion metal loss resulted in a proportional decrease in electrical capacitance of the sensor. Laboratory experiments using a muffle furnace with an …
Aglite Lidar: A Portable Elastic Lidar System For Investivating Aerosol And Wind Motions At Or Around Agricultural Production Facilities, Christian C. Marchant, Thomas Wilkerson, Gail E. Bingham, Vladimir V. Zavyalov, Jan M. Andersen, Cordell B. Wright, Scott S. Cornelsen, Randy S. Martin, Philip J. Silva, Jerry L. Hatfield
Aglite Lidar: A Portable Elastic Lidar System For Investivating Aerosol And Wind Motions At Or Around Agricultural Production Facilities, Christian C. Marchant, Thomas Wilkerson, Gail E. Bingham, Vladimir V. Zavyalov, Jan M. Andersen, Cordell B. Wright, Scott S. Cornelsen, Randy S. Martin, Philip J. Silva, Jerry L. Hatfield
Civil and Environmental Engineering Faculty Publications
The Aglite Lidar is a portable scanning lidar that can be quickly deployed at agricultural and other air quality study sites. The purpose of Aglite is to map the concentration of PM10 and PM2.5 in aerosol plumes from agricultural and other sources. Aglite uses a high-repetition rate low-pulse energy 3-wavelength YAG laser with photon-counting detection together with a steerable pointing mirror to measure aerosol concentration with high spatial and temporal resolution. Aglite has been used in field campaigns in Iowa, Utah and California. The instrument is described, and performance and lidar sensitivity data are presented. The value of the lidar …