Engineering Commons^™

Human Knee Joint Finite Element Model Using A Two Bundle Anterior Cruciate Ligament: Validation And Gait Analysis, Nicholas A. Czapla, Meghan K. Sylvia, Zachary F. Lerner, David J. Tuttle, Otto J. Schueckler, Scott J. Hazelwood, Stephen M. Klisch

Mechanical Engineering

No abstract provided.

Pseudo-Rigid Body Method For Reducing Soft Tissue Artifact: Validation And Application To Gait, Jake E. Deschamps, Karim C. Dudum, Eshan M. Dandekar, Scott Hazelwood, Stephen M. Klisch

Mechanical Engineering

No abstract provided.

Design And Implementation Of An Instrumented Pedal For Cycling Biomechanics Research, Luke I. Kraemer, Juan D. Gutierrez-Franco, Jake E. Deschamps, Karim C. Dudum, Eshan M. Dandekar, Scott Hazelwood, Hemanth V. Porumamilla, Stephen M. Klisch

Mechanical Engineering

No abstract provided.

Development Of A Human Knee Joint Finite Element Model To Investigate Cartilage Stress During Walking In Obese And Normal Weight Adults, Meghan K. Slyvia, Nicholas A. Czapla, Zachary F. Lerner, David J. Tuttle, Otto J. Schueckler, Scott Hazelwood, Stephen M. Klisch

Mechanical Engineering

No abstract provided.

Using Opensim To Predict Knee Joint Moments During Cycling, Karim C. Dudem, Jake E. Deschamps, Juan D. Gutierrez-Franco, Luke I. Kraemer, Alejandro M. Gonzalez-Smith, Eshan M. Dandekar, Scott Hazelwood, Stephen M. Klisch

Mechanical Engineering

No abstract provided.

Consumer Perceptions Towards Package Designs: A Cross Cultural Study, Romica Chandra Lal, Fritz Yambrach, Lucy Mcproud

Journal of Applied Packaging Research

The choice of one package or the other can be an economic decision or can be influenced by cultural acceptance or perception of individual convenience. Product package systems can be designed for one-time use or multiple-use purposes. Package perceptions in different countries typically develop from a variety of factors, including climate, lifestyle, and cultural acceptance with regard to particular products. In an increasingly global economy with multinational firms marketing products worldwide, it is important to understand the differences between consumer needs and consumer responses to product-package systems.

The objective of this research was to examine consumer perceptions of different product …

Mount Logan Middle School Students Test Electric Cart | Utah State University Power Electronics Lab, Usu College Of Engineering

College of Engineering News

On June 12th, students from Mount Logan Middle School test out their electric cart on the EVR (Electric Vehicle & Roadway) track. They will be participating this fall in a Green Power competition at the Bonneville Salt Flats to see how far their car can go on a charge using just two 12 volt batteries. Last we counted, they were over 40 laps and the cart was still going!

Information Technology News, Georgia Southern University

Information Technology: News & Publications (2012-2023)

• Data Science at Georgia Southern

Assessment Of Management And Documentation Systems For The Bowling Green State University American Society For Quality Student Branch, Sara Murphy

Master of Education in Instructional Design and Technology Plan II Graduate Projects

The Bowling Green State University (BGSU) American Society for Quality (ASQ) student branch seeks to provide current and prospective students the opportunity to expand or build upon current and evolving quality principles. This project seeks to provide the ASQ student branch the opportunity to develop documented systems of daily operations and other activities in relation to the defined BGSU ASQ student branch organizational objectives. The research associated with this project will provide detailed information related to the organizational requirements to aid in the development of documented systemic procedures. The information also indicates what practices should be in place to ensure …

Effects Of Various Extrapolation Techniques For Abbreviated Dynamic Modulus Test Data On The Mepdg Rutting Predictions, Minkyum Kim, Louay N. Mohammad, Mostafa A. Elseifi

Journal of Marine Science and Technology–Taiwan

Abbreviated dynamic modulus test protocols have been used to reduce the time and cost of running the test for routine uses. The abbreviated test results can then be extrapolated to estimate the complete array of the dynamic modulus values required for the Level 1 MEPDG analysis. Multiple approaches are available for the extrapolation depending on a master curve and shift factor functions chosen. The objective of this study was to identify the best practice of extrapolating the abbreviated dynamic modulus data by evaluating the accuracy of performance predictions through MEPDG pavement analysis. Two common sigmoid functional forms (i.e., the MEPDG …

Combined Effects Of Temperature And Moisture Content On Soil Suction Of Compacted Bentonite, Shu-Rong Yang, Wei-Hsing Huang, Shao-Hung Chung

Journal of Marine Science and Technology–Taiwan

Based on experimental determination of soil suctions of two clayey soils, this study investigated the combined effects of temperature and moisture content on soil suction. First, two clayey soils were statically compacted at target moisture contents ranging from 5% to 20%, such that a broad spectrum of compaction conditions can be evaluated. Then, filter paper method and thermocouple psychrometer were adopted to measure soil suction, including total and matric suctions, at temperatures ranging from 10°C to 60°C. It was found that soil suctions of expansive soils vary with compaction parameters such as compaction moisture content and compaction effort, and that …

Preliminary Study On The Correlation Between Two-Dimension Surface Texture And Friction, Shih-Huang Chen, Kuan-Lun Hsu, Pei Liu, Hung-Wen Chung

Journal of Marine Science and Technology–Taiwan

The friction of pavement is mainly determined by the microtexture of the surface layer. However, the finer degree of microtexture makes it impossible to observe with naked eye. The object of this study was to develop a High Definition Scan Texture Machine (HDSTM) with 2D Laser CCD to support previous research on the correlation between texture and friction. In addition, this study proposed seven different parameters and sought to find an index for an ideal correlation that could represent the entire pavement texture. By assessing the test results, the Segment of Average Profile Depth (SAPD) was selected as the texture …

The Feasibility Of Using Washed Municipal Solid Waste Incinerator Bottom Ash In Compressed Mortar Paving Units, Wen-Ten Kuo, Chih-Chien Liu, Chun-Ya Shu

Journal of Marine Science and Technology–Taiwan

This study replaced natural fine aggregate with a fine aggregate of washed municipal solid waste incinerator bottom ash (WMSWIBS) in the production of compressed mortar paving units to explore the feasibility of using WMSWIBS in this application. Cement-aggregate ratios (c/a) of 0.1, 0.2, 0.3, 0.4, and 0.5 and water-cement ratios (w/c) of 0.20, 0.25, and 0.30 were selected. The results yielded a specific gravity of 2.21, aggregate absorption of 9.6%, and a fineness modulus of 3.2. The WMSWIBS's toxicity characteristic leaching procedure (TCLP) values were much lower than the limit specified by the Environmental Protection Administration (EPA, Taiwan), and its …

Time-Variant Load Models Of Electric Vehicle Chargers, Nicole P. Zimmerman

Dissertations and Theses

In power distribution system planning, it is essential to understand the impacts that electric vehicles (EVs), and the non-linear, time-variant loading profiles associated with their charging units, may have on power distribution networks. This research presents a design methodology for the creation of both analytical and behavioral models for EV charging units within a VHDL-AMS simulation environment.

Voltage and current data collected from Electric Avenue, located on the Portland State University campus, were used to create harmonic profiles of the EV charging units at the site. From these profiles, generalized models for both single-phase (Level 2) and three-phase (Level 3) …

Assessment Of Rut Depth Measurement Accuracy Of Point-Based Rut Bar Systems Using Emerging 3d Line Laser Imaging Technology, Yichang (James) Tsai, Zhaohua Wang, Feng Li

Journal of Marine Science and Technology–Taiwan

Point-based rut bar systems are commonly used by transportation agencies. However, potential measurement errors exist in these systems because of the limited number of sample points (e.g. 3 to 31 points). Now, advanced sensing technology can acquire high-resolution transverse profiles of more than 4,000 points using 3D line laser imaging technology (termed the 3D line laser hereafter). This study, sponsored by the United States Department of Transportation (USDOT) Research and Innovative Technology Administration (RITA) program, is a) to explore the feasibility of using the 3D line laser to accurately and reliably measure rut depth, and b) to quantify the potential …

Application Of A Decision Tree Method With A Spatiotemporal Object Database For Pavement Maintenance And Management, Chien-Ta Chen, Chia-Tse Hung, Jyh-Dong Lin, Po-Hsun Sung

Journal of Marine Science and Technology–Taiwan

In recent years, pavement engineering has gradually shifted from new construction work to pavement maintenance and management. Since pavement engineers of the Taipei City Government change frequently, objective data is used to make decisions pertaining to road maintenance in Taipei City instead of relying on engineers' experience. In this study, three methods (ID3, C5.0 and SVM) have been chosen to test for use in the decision-making process related to road maintenance of Taipei City. The results show the correct classification rates of the decision trees are 76.67% (C5.0), 64.52% (ID3), and 66.67% (SVM). The decision tree of C5.0 was compared …

The In-Situ Temperature Evaluations Of Permeable Pavements In Summer, Chen-Yu Hsu, Shih-Huang Chen, Jyh-Dong Lin

Journal of Marine Science and Technology–Taiwan

In this paper, one traditional asphalt and three permeable pavements were constructed to evaluate the thermal characteristics of pavement temperature at different depths and heat output in the field. The data were collected from May to July, 2011 to analyze with six traditional Chinese summer solar terms. On July 23, 2011 or Ta-Shu (great heat), it was the hottest day among six summer solar terms, while peak temperature of asphalt pavements was more than 60°C and ambient temperature was 36°C occurring at 14:00. In addition, it was found that reflectivity was affected by the color of pavement materials, and the …

Innovative Asphalt Research Using Accelerated Pavement Testing, Manfred N. Partl, Christiane Raab, Martin Arraigada

Journal of Marine Science and Technology–Taiwan

Accelerated pavement testing is one key for innovations in the field of road pavement structures and materials due to its power of assessing mechanical performance in close to reality situations. This paper discusses two types of mobile load simulators for applying unidirectional wheel loads at comparatively high frequencies, the MMLS3, a one third scale device, and the MLS10, a full-scale device. Through examples it is demonstrated that these devices are suitable for testing complex systems, such as mechanical resistance of light reflectors on pavements, traffic resistance of bituminous plug expansion joints for bridges, performance of grid reinforced pavements as well …

Assessment Of Asphalt Concrete Pavement Quality By Using Infrared Thermal Imaging Technology, Lisa Y. Chen, Mei-Yun Wang, Chien-Chiao Chao, Wei Lo

Journal of Marine Science and Technology–Taiwan

Manholes cause uneven pavements, which affect the quality of pavement services, leading to public criticism in Taiwan. Many manholes are buried beneath pavements to ensure evenness and enhance the usability of pavements for pedestrians. The presence of manholes affects the quality of the asphalt concrete underneath the pavement because then conducting excavations using road construction equipment becomes difficult, ultimately leading to early deterioration of the pavement surfaces. Temperatures can also differ considerably between the manhole and non-manhole locations on asphalt concrete pavement. This study used infrared thermal imaging technology and an analysis of variances statistical method to investigate the differences …

Regression Modeling Of Resilient Modulus Of Unbound Aggregates, Zahid Hossain, Musharraf Zaman, Curtis Doiron

Journal of Marine Science and Technology–Taiwan

Resilient response of granular aggregate is a key input parameter in all three hierarchical levels of the new MechanisticEmpirical pavement Design Guide (MEPDG), which requires a comprehensive evaluation of resilient modulus (Mr) database(s) for local conditions. To this end, Mr data and other routine properties (gradation, LA Abrasion loss, standard Proctor, and unconfined compressive strength (UCS)) of 105 samples of two different types of aggregate (limestone and sandstone) were analyzed in this study. A total of four stressbased regression models were evaluated using a statistical software package (“SPSS”, Version 17), and material constants (k1, k2, and k3) for these aggregates …

Evaluation Of Steel Bridge Deck Ma Mixture Properties During Construction, Zou Guilian, Zhang Xiaoning, Chung Wu

Journal of Marine Science and Technology–Taiwan

Responses of steel bridge deck pavement to environmental and traffic loadings are much different from those of normal highway asphalt concrete pavement or concrete bridge deck. Steel bridge deck pavement generally deals with more challenging conditions, especially orthotropic steel bridges (Seim and Ingham, 2004; Medani et al., 2007; Battista et al., 2008; Cong et al., 2009; Kashefi et al., 2010). Therefore, materials used in constructing the steel deck bridges must possess excellent properties. Guss Asphalt (GA) and Mastic Asphalt (MA) are two types of asphalt concrete primarily used in steel deck bridge pavement construction (Eulitz et al., 2004; Ripke, 2009; …

The Application Of Hierarchical Linear Modeling For Barrier-Free Sidewalk Evaluation With The Basis Of Disability Organization Cognitive, Ching Tsung Hung

Journal of Marine Science and Technology–Taiwan

Organizations are hierarchical in nature. Specifically, individuals in the workplace are entrenched in work groups, which are entrenched in departments, which are entrenched in organizations, which are in turn entrenched in the larger environment. Hence, hierarchical linear modeling (HLM) is a statistical technique available to researchers that is ideally suited for the study of such cross-level issues. The purpose of this article is to provide market researchers with an overview and detailed description of HLM as well as a practical illustration of its usage. The long-term aim of the Americans with Disabilities Act (ADA) is for publicly available services along …

An Idealized Discrete Element Model For Pavement-Wheel Interaction, Yu Liu, Zhanping You, Hui Yao

Journal of Marine Science and Technology–Taiwan

In order to design a longer-lasting pavement, it is important for pavement designers to understand the mechanism of the vehicular loading. The main objective of this paper is to present an idealized discrete element modeling of pavementwheel interaction for better understanding traffic loading conditions. The idealized model consists of three parts: a smooth surface, a wheel, and a mass. The smooth surface simulates the pavement surface, while the wheel and mass represent a vehicle wheel and its corresponding mass, respectively. The mechanical behaviors at the interaction surface are simulated through an elastic contact model, a slip model, and a viscous …

The Service Quality Of Roads In Taiwan From The Point Of View Of Road Users And Drivers, Jia-Ruey Chang, Pei-Jun Liu, Guo-Chen Chen

Journal of Marine Science and Technology–Taiwan

This study uses an analytic hierarchy process (AHP) and structural equation modeling (SEM) to explore how respondents without engineering backgrounds view the road service quality in Taiwan. First, a first-stage questionnaire is conducted in Taiwan's Taoyuan County to develop an “Assessment Framework of Road Service Quality from the Point of View of Road Users”. The framework is used to assess the views of road users on road service quality. A second-stage questionnaire measures the priority placed by road users on the different aspects and assessment items of road service quality. The AHP results show that road users are most concerned …

Toughness Enhancement Of Airfield Concrete Pavement By Using Short Fiber, Muhammad Mubaraki

Journal of Marine Science and Technology–Taiwan

Few efforts have been made to understand the progressive failure of concrete pavements, especially the crack propagation in the concrete materials. More detailed information about concrete material, such as its fracture properties, is required along with the strength to better quantify crack propagation rates of varying concrete mixture proportions and constituents. The susceptibility of concrete pavements to crack growth may be eliminated by adding short steel or glass fibers. Therefore, an experimental study was carried out to investigate the effect of adding short fiber, steel or glass, in controlling the fracture energy of concrete. The analysis was conducted for a …

Critical Assessment Of Jointed Plain Concrete Pavement Performance Using 40-Years Of Condition Evaluation Data, Yichang (James) Tsai, Yiching Wu, James Lai

Journal of Marine Science and Technology–Taiwan

Georgia is considered to have one of the best concrete pavement design and materials in the U.S. Designs for joint plain concrete pavement (JPCP) have evolved over time. Analysis of long-term pavement condition data is still very necessary for evaluating the actual performance of different pavement designs and rehabilitation strategies to better understand the actual performance. Since the 1960s, various designs of jointed plain concrete pavement (JPCP), including non-doweled pavement on a soil or soil cement base (ND), non-doweled pavement on an improved base (ND-IB), and doweled pavement on an improved base (D-IB), have been constructed at different periods of …

Leading Large-Scale Change In An Engineering Program, Cheryl Allendoerfer, Rebecca Bates, Jennifer Karlin, Ron Ulseth, Dan Ewert

Integrated Engineering Department Publications

While many efforts have been made to improve technical and professional skills in engineering graduates, there has been little comprehensive change in the pedagogy of most engineering education institutions in the U.S. Many of these efforts involve changing only one or two aspects of the curriculum, and therefore are less likely to make significant changes in the student learning outcomes. For better success, engineering curricular changes will need to address the entire education system. In order to see real, sustainable improvement in engineering education practice, both the behaviors of the participants and the systems within which these participants act must …

Utilizing An Emporium Course Design To Improve Calculus Readiness Of Engineering Students, Virgil U. Pierce, Javier A. Kypuros

Mechanical Engineering Faculty Publications and Presentations

The intervention has targeted incoming students in Engineering and Computer Sciencedegrees. Participating students were selected who had a record of participation in Pre-Calculus classes in high school, but who had not demonstrated their readiness to take Calcu-lus, as measured by placement tests and existing credit. The course design uses an emporiummethod, specifically the Assessment and Learning in Knowledge Spaces (ALEKS) software,in a computer lab to deliver to students an intensive program of mathematical practice andexploration. The course design is meant to take advantage of students? existing knowledge,rewarding them for it in fact, and focus them on specific Algebra and Trigonometry …

Use Of Mobile Learning Strategies And Devices For E-Portfolio Content Creation In An Engineering Thermodynamics And Fluid Mechanics Classes: Student Perceptions, Devshikha Bose, Krishna Pakala

Mechanical and Biomedical Engineering Faculty Publications and Presentations

Use of mobile learning strategies and devices for e-portfolio content creation in an engineering Thermodynamics class: Student perceptions Mobile devices can be useful for creating educational content and to help students to learn better (Benedict & Pence, 2012; Tabor & Minch, 2013; Pereira, Echeazarra, Sanz-Santamaria, & Gutierrez, 2014). The purpose of this study is to determine student perceptions on the efficacy of using mobile learning strategies and devices to create electronic content for inclusion in an engineering individual e-portfolio. Students enrolled in an undergraduate 300-level engineering Thermodynamics class, created multimedia videos and produced content demonstrating course content summaries, problem solving …

Virtual Peer Teams: Connecting Students With The Online Work Environment, Thalia Anagnos, Alicia Lyman-Holt, Sean Brophy

Faculty Publications

This study examined the potential of online collaboration tools to develop team cohesiveness and research skills of undergraduates participating in Virtual Peer Teams (VPTs) in a geographically distributed research experience for undergraduates (REU). The VPTs mimic geographically dispersed virtual teams that are now common in industry. VPTs consisted of four to six students from multiple REU sites around the United States who were asked to experiment with various collaboration and social network technologies to complete specified research-based and social tasks. Surveys were used to collect formative and summative feedback. Students agreed their VPT experiences were significant in their professional development …