Digital Commons Network^™

Some Project Manegement Challenges When Planning To Conduct Vertical Transportation Study, Magdelena Krstanoski

Early Career Technical Journal (ECTJ)

Section 9: Miscelleneous; pp. 236-240

Design And Development Of Air Powered Engine, Shalin Shah, Nisarg Patel, Kirtan Khajanchi, Vimal Savsani

Early Career Technical Journal (ECTJ)

Section 9: Miscelleneous; pp. 241-248

Adaptive Filtering For Heart Rate Signals, Samira Jaafari

Master's Theses

This work focused on the effects of suppressing the motion artifact of wrist photoplethysmographic heart rate signals. Monitoring of the heart can offer important insight with regard to health and wellness. The objective of the experiment conducted here was to recover the distorted signal resulting from body movement while measuring the heart rate signal non-invasively from the wrist.

The class of filters, known as adaptive filters, that can extract meaningful information from the distorted signal, used predetermined initial conditions to equalize the signal distortion due to motion. These filters do not require prior knowledge about the system.

Adaptive filters of …

Delay Flip-Flop (Dff) Metastability Impact On Clock And Data Recovery (Cdr) And Phase-Locked Loop (Pll) Circuits, Alfred Sargezisardrud

Master's Theses

Modeling delay flip-flops for binary (e.g., Alexander) phase detectors requires paying close attention to three important timing parameters: setup time, hold time, and clock edge-to-output (or briefly C2Q time). These parameters have a critical role in determining the status of the system on the circuit level. This study provided a guideline for designing an optimum DFF for an Alexander phase detector in a clock and data recovery circuit. Furthermore, it indicated DFF timing requirements for a high-speed phase detector in a clock and data recovery circuit. The CDR was also modeled by Verilog-A, and the results were compared with Simulink …

A Proposed Return Algorithm For Elastoplastic Constitutive Relations, David A. Cooper, David L. Littlefield

Early Career Technical Journal (ECTJ)

Section 5: Numerical Methods; pp. 121-125

High School Engineering/Technology Education Course Impact On Georgia Standardized Achievement Scores, Rodney N. Ragsdale

STEMPS Theses & Dissertations

This research explores whether a student completing a two course sequence in engineering/technology education is more successful on the Georgia High School Graduation Test (GHSGT) assessments in mathematics, science, social studies, and English/language arts. The findings provide additional insight into whether the current focus on STEM subjects (science, technology, engineering, and mathematics) could also improve student achievement in core academic areas. Student data were provided through the Georgia Department of Education database, from all public high schools in Georgia where engineering/technology education courses are taught. The school sizes ranged from the largest schools in the state (student population greater than …

An Approximation Of The Internal Rate Of Return Of Investment In Selected Undergraduate Degree Programs, Editha A. Lupdag–Padama, John Paolo R. Rivera, Rhory C. Fernandez–Go, Krista Danielle S. Yu, Francesca Dianne B. Solis, Rosanina A. Sayoc

DLSU Business & Economics Review

The situation of a typical Filipino household, overseas employment, and the culture of migration are deemed as determinants for investing in higher education such as in the specialized fields of accountancy, education science and teacher training, engineering, and nursing. We examine both local and international labor demand for accountants, teachers, engineers, and nurses as well as its underlying implications on the exodus of professionals. As such, the determination of the internal rate of return to investment is of crucial importance to households to fully maximize educational opportunities and for the government and other institutions to confront this globally-changing situation. Using …

Cracking The Code On Stem: A People Strategy For Nevada's Economy, Jessica A. Lee, Mark Muro, Jonathan Rothwell, Scott Andes, Siddharth Kulkarni

Brookings Mountain West Publications

Nevada has in place a plausible economic diversification strategy—and it’s beginning to work. Now, the state and its regions need to craft a people strategy. Specifically, the state needs to boost the number of Nevadans who possess at least some postsecondary training in the fields of science, technology, engineering, or math—the so-called “STEM” disciplines (to which some leaders add arts and design to make it “STEAM”).

The moment is urgent—and only heightened by the projected worker needs of Tesla Motors’ planned “gigafactory” for lithium-ion batteries in Storey County.

Even before the recent Tesla commitment, a number of the more high-tech …

Chemosensitive Neurons Of The Locus Coeruleus And The Nucleus Tractus Solitarius: Three Dimensional Morphology And Association With The Vasculature, Cathy D. Graham

Browse all Theses and Dissertations

We studied the 3 dimensional structure of LC and cNTS neurons from neonatal rats. Neurons were identified as either chemosensitive or nonchemosensitive based on their firing rate response to hypercapnia, using whole-cell patch clamping and were passively loaded with Lucifer Yellow. The identified, loaded neurons were reconstructed and analyzed using Neurolucida Neuron Tracing Software. Chemosensitive LC neurons have less rounded soma than nonchemosensitive neurons, and they have dendrites arising from two poles to produce a fusiform appearance. The dendritic branches extend a greater distance from the soma of chemosensitive than nonchemosensitive neurons. Conversely, chemosensitive cNTS neurons were found to have …

Mining And Understanding Regret Tweets, Lu Zhou

Browse all Theses and Dissertations

Inappropriate tweets may cause severe damages on the authors' reputation or privacy. However, many users do not realize until publishing them after a while. Once published, such tweets have lasting effects that may not be completely eliminated by simple deletion, because other users may have read them or third-party tweet analysis platforms have cached them. In this paper, we study the problem of identifying regret tweets for normal individual users, with the ultimate goal to reduce the occurrences of regret tweets. We develop a machine learning approach to extract a large collection of regret tweets from noisy deleted tweets. We …

Amyna: A Security Generator And Performance Estimator Framework Against Memory-Based Attacks, Anna Trikalinou

Browse all Theses and Dissertations

As we become more and more dependent on computer networks, using them for everything from banking and investing to shopping and communicating, computer security has emerged to be an increasingly important concern, due to undesirable cyber-security attacks. Thus, in response to this issue many efforts have been made towards accurate and robust computer security protection; however, the general problem is very challenging, diverse and ever-changing and remains still open. In this PhD dissertation we offer protection on one of these cyber-security attacks, the memory-based attacks, caused by one of the most critical software errors according to the MITRE ranking. When …

A Context-Driven Subgraph Model For Literature-Based Discovery, Delroy Huborn Cameron

Browse all Theses and Dissertations

Literature-Based Discovery (LBD) refers to the process of uncovering hidden connections that are implicit in scientific literature. Numerous hypotheses have been generated from scientific literature using the LBD paradigm, which influenced innovations in diagnosis, treatment, preventions and overall public health. However, much of the existing research on discovering hidden connections among concepts have used distributional statistics and graph-theoretic measures to capture implicit associations. Such metrics do not explicitly capture the semantics of hidden connections. Rather, they only allude to the existence of meaningful underlying associations. To gain in-depth insights into the meaning of hidden (and other) connections, complementary methods have …

3-D Scene Reconstruction From Line Correspondences Between Multiple Views, Michael Linger

Browse all Theses and Dissertations

Three-dimensional scene reconstruction from 2-D images has many applications, such as surveillance, mission planning, autonomous navigation systems, cartography, and target recognition. Of specific interest to this research is the reconstruction of urban scenes containing man-made structures, such as roads and buildings, to support the burgeoning surveillance industry. Using 3-D maps to augment existing mission planning cartography products (DTED/SRTM, CADRG, CIB), mission and event planners will be able to compute strategic line-of-sight coverage for threat avoidance or threat prosecution. Forensic video analysts can use these models to recreate crime scenes, while law enforcement can build flight plans to minimize occlusions from …

The Influence Of Mesa Activities On Underrepresented Students Nsf Dr K-12 Proposal 1020019, C. Hailey, Chandra Austin Stallworth, Cameron Denson, Daniel L. Householder

Mechanical and Aerospace Engineering Faculty Publications

Mathematics, Engineering, Science Achievement (MESA) outreach programs are partnerships between K-12 schools and higher education in nine states. MESA efforts introduce integrated experiences in science, mathematics and engineering to K-12 students from groups that are traditionally underrepresented in the STEM disciplines. This exploratory study examined the influence of selected MESA activities on students' self-efficacy, their perceptions of engineering, and their interest in engineering and other STEM fields. Field trips, guest lecturers, design competitions, hands-on activities and student career and academic advisement were of specific interest in this survey. The project also investigated the relationship between student engagement in MESA and …

What Role Does Mathematical Preparedness Play For Engineering Students Who Transfer From And Ordinary Degree Into An Honours Degree?, Michael Carr, Marisa Llorens, Susan O'Shaughnessy, Anne Marie Mccarrick, Domhnall Sheridan

Conference papers

Students who have not achieved a high level of mathematics at secondary school but have a pass in ordinary level mathematics have the option of entering onto a 3-year Ordinary degree (Level 7). Upon successful completion of this award students may apply to progress to the third year of the Honours degree. Up until relatively recently an upper merit (60%) was the minimum required to make this transition. In recent years this requirement has been reduced with many students with lower marks being offered the possibility of transferring.

Relatively little work has been done on the transition from an Ordinary …

2013 Fall Engr333 Project Final Report, 2013 Fall Engr333

ENGR 333

During the fall of 2013, the Engineering 333 class was asked the question, “what would it take for Calvin College to operate a biofuel vehicle from campus resources?” The three primary considerations included:

• Determining the optimal biofuel feedstock in terms of availability, transportation, and processing.
• Selecting a biofuel vehicle for conversion or purchase to operate on the selected feedstock.
• Designing the infrastructure and process required for operating the selected biofuel vehicle. The design and research described below proposes an environmentally sustainable and cost-effective method for integrating a biofuel vehicle into Calvin’s existing infrastructure.

2013 Fall Engr333 Student Seminar Presentation, Claire Philippi, Karl Bratt, Mike Houtman, Brandon Koster

ENGR 333

File for student presentation, given by students in the Fall 2013 class of ENGR333.

2013 Fall Engr333 Vehicle Poster, 2013 Fall Engr333

ENGR 333

Waste vegetable oil (WVO) was chosen by the class as the best fuel source for the Calvin Biofuel Vehicle Project. The class then considered vehicle options and selected a lawnmower to be powered by WVO.

2013 Fall Engr333 Fuel And Facilities Poster, 2013 Fall Engr333

ENGR 333

The objective of the project was to answer the question: “What would it take for Calvin College to operate a biofuel vehicle from campus resources.” The class split into 3 teams:

• Fuel/Feedstock
• Facilities/Infrastructure
• Vehicle

Synergy Of The Developed 6d Bim Framework And Conception Of The Nd Bim Framework And Nd Bim Process Ontology, Shawn Edward O'Keeffe

Dissertations

The author developed a unified nD framework and process ontology for Building Information Modeling (BIM). The research includes a framework developed for 6D BIM, nD BIM, and nD ontology that defines the domain and sub-domain constructs for future nD BIM dimensions. The nD ontology defines the relationships of kinds within any new proposed dimensional domain for BIM. The developed nD BIM framework and ontology takes into account the current 2D-5D BIM dimensions. There is a synergy between the 6D and nD framework that allows the nD framework and ontology to be utilized as a unified template for future dimensional development. …

Stem Literacy For Ells Through Service Learning, Sandra Rodriguez-Arroyo, Barbara Brimmerman, Olga Zeisler

Teacher Education Faculty Proceedings & Presentations

This presentation features: Rationale, Model of Academic Language Proficiency/ Jim Cummins’s Quadrant, STEM Literacy for ELLs, ELLS-OPS, Tall grasses and Wildflowers of Nebraska: A Service Learning Experience, UNO Students, Objectives, First Year: 2011-2012, Second Year: 2012-2013, Community Partner: Allwine Prairie, Support from Service Learning Academy, Research Presentations, Literacy Strategies, Service Learning Project Outcomes, Visit to the Prairie, and Future Research.

How Engineering Innovators Characterize Engineering Innovativeness: A Qualitative Study, Daniel Michael Ferguson

Open Access Dissertations

The use of science and engineering skills to address the problems of modern society is regarded as an economic strategy in developed countries across the world. However, business and political leaders in the United States feel that we, as a society, do not understand that new global competition can match and even outpace us on innovation. Many of the studies on innovators are not specific to engineers. This study filled a gap in the understanding of what characteristics constitute innovative behavior in engineers.

The purpose of this study was to explore engineers' views of innovation and innovators who create and …

Old Dominion University's Engineering Summer Camp's Effect On Students Interest In Engineering, Clair Dorsey

OTS Master's Level Projects & Papers

The problem of this study was to determine parents' perceptions of their child's experience in Old Dominion University's engineering summer camps to determine if their child generated an interest in engineering as a career choice.

The Hidden Stem Economy: The Surprising Diversity Of Jobs Requiring Science, Technology, Engineering, And Math Knowledge, Jonathan Rothwell

Brookings Scholar Lecture Series

Policy and businesses leaders have argued that there is a shortage of highly educated workers in professional occupations related to science, technology, engineering, and math (STEM). Critics have countered that Ph.D scientists often face a difficult academic labor market and do not necessarily earn higher wages than other professionals. Yet, both sides of the STEM debate have been relying on an ill-defined definition of STEM work. Using a detailed survey of worker knowledge requirements, this research project redefines STEM jobs based on the level of knowledge required in STEM fields to perform occupations. The results uncover two facts previously unrecognized …

2013 Fall Engr333 Project Assignment, Matthew K. Heun

ENGR 333

The Fall 2013 ENGR333 project focused on production and use of biofuels at Calvin University.

I asked the students “What would it take for Calvin College to operate a biofuel vehicle from campus resources?”

Customer

The customer for this project was Calvin’s Physical Plant director Phil Beezhold.

Uno Stem Strategic Plan, Uno Stem Leadership Team

Student Learning

The following document is a strategic plan for STEMeducation at UNO as of September 5, 2013. Thedocument represents nearly six months of strategicplanning discussions, meetings, and conversationsbetween those of us on the writing team and many ofyou, our colleagues and friends that share our passionfor excellence in STEM education at UNO. It is alsothe result of a review of our local STEM statistics, theprofessional literature on STEM learning, and a sampleof what other universities are doing to enhance STEMlearning on their campuses. The document is intended tobe a very dynamic one that will be revisited yearly as wecontinue to move …

If It Isn’T Tested, It Doesn’T Work: Automated Verification Of Sofia Data Handling Software, Garrett Holthaus, Brett Stroozas, Zaheer Ali

STAR Program Research Presentations

This project involves writing code to automate the verification testing of the Data Handling Working Group (DHWG) software tools for the Stratospheric Observatory for Infrared Astronomy (SOFIA). The DHWG tools extract engineering data from SOFIA missions. Engineering data includes a variety of information on the operations and status of SOFIA systems during a flight, including computer network traffic, user commands, and images acquired from cameras mounted on the telescope assembly. It is important to review engineering data because this data can lead to the discovery of any problems or inefficiencies in SOFIA hardware and software. Analysis of engineering data can …

Chance Favors Only The Prepared Mind:” The Proper Role For U.S. Department Of Defense Science And Engineering Workforce, Timothy Coffey

Defense and Technology Papers

This publication provides critical recommendations for managing the DoD’s 130,000 person Science and Technology workforce through a period of growing fiscal and geopolitical ambiguity. The report outlines a strategy that: prioritizes lessons learned through hands-on experience; cultivates practices that identify and support the most promising trends in technology and research; promotes advocacy for worthy programs, and; develops a process for ensuring competent “third parties” determine a fair price for acquisition and development. It concludes by urging the DoD return to a prudently managed, conservative S&T strategy that emphasizes workforce recruitment and training, adequate funding for research and development, and increased …

Women In Engineering: Identity Communication In Social Media, Dongni Wang

All Theses

This thesis examines women engineers' experience in social media with a focus on identity communication. Framing as a case study, this study attempts to explore women engineers' online presence and how they utilize social media in their daily activities. Using the concept of intersectionality, this study addresses the differences of social media usage among women engineers in terms of the use of social media by professional organizations of women engineers and the use of individual women engineers. Thematic analysis was conducted to analyze the public available data from a Facebook page maintain by a well-known women engineers' professional organization. Online …

Defining Characteristics Of An Integrated Stem Curriculum In K-12 Education, Vinson Robert Carter

Graduate Theses and Dissertations

The purpose of the study was to obtain consensus concerning the defining characteristics of integrated STEM (Science, Technology, Engineering, and Mathematics) curriculum. This study utilized a three round modified Delphi study to solicit recommendations from experts of STEM education in order to: 1) create a set of categorical and defining curricular components needed to develop and implement appropriate integrated STEM curriculum; 2) identify the characteristics that set integrated STEM education curriculum apart from single-discipline curricula; 3) discuss the components necessary to gauge whether an initiative, project, or curriculum should be referred to as integrated STEM education; and 4) examine whether …