Digital Commons Network^™

Strengthening Of Corroded Steel Structures Using Cfrp – An Experimental Review, Ghada El-Mahdy Ph.D., P.Eng, Abdallah H. Yassin, Abdel El Rahman Khaled

Civil Engineering

Fibre reinforced polymers (FRP) have been widely used to strengthen reinforced concrete structures, however, nowadays their use to strengthen steel structures is under investigation. In particular, the need to strengthen corroded steel structures found in aggressive environments, such as marine environments, which have undergone a reduction in cross-sectional area and hence a reduction in their load-carrying capacity is in need of studying. The main problems that arise when using carbon fibre reinforced polymer (CFRP) sheets to strengthen steel structures is the weakness in the interfacial bond between the CFRP and the steel surface, the thinness of CFRP sheet, and the …

Sway And No-Sway Behaviour Of Pitched Roof Portal Frames Composed Of Cold-Formed Steel Sections, Ghada El-Mahdy Ph.D, P.Eng., Maged Tawfick Hanna Ph.D

Civil Engineering

Cold-formed sections buckle locally and distortionally in combination with overall buckling of the member. When these sections are incorporated into a portal frame structure, this combination of buckling modes affects the overall buckling behaviour of the portal frame. The objective of this paper is to study the effect of local and distortional buckling on the overall behaviour of portal frames. The portal frames studied have a span of 10 m and an eave height of 3 m with a roof pitch of 1:10. Two frames are studied the first with one intermediate interconnector at the midpoints of the column and …

The Scaffolds To Guide Fast Angiogenesis, Tianhong Zhou

McKelvey School of Engineering Graduate Student Theses & Dissertations

Angiogenesis is one of the most challenging problems in bone structure repair. The different types of 3D fibrous morphology structure of the extracellular matrix for fasting angiogenesis have been studied. Due to the densely packed constructs and limited porosity of scaffold, the challenge still remains for scaffold fabrication. In this study, we fabricated PCL scaffold with growth factors and cells to guide fast angiogenesis by electro-spinning and electro-spray simultaneously. We developed a technique that electro-spinning encapsulates growth factors OPN(Recombinant Human Osteopontin) and SDF-1α(CXCL12) in poly(lactide-co-glycolide) (PLGA) microspheres into PCL 3D structures scaffold fibers. We also developed a new technique to …

Effect Of The Dielectric Barrier Discharge Plasma On The Optical Properties Of Cds Thin Film, Eman Kadum Jebur

Baghdad Science Journal

Cadmium sulphide CdS films with 200 nm have been prepared by thermal evaporation technique on glass substrate at substrate room temperature under vacuum of 10-5mbar.In this paper, the effect of Dielectric Barrier Discharge plasma on the optical properties of the CdS film. The prepared films were exposed to different time intervals (0, 3, 5, 8) min. For every sample, the Absorption A, absorption coefficient α , energy gap Eg ,extinction coefficient K and dielectric constant ε were studied. It is found that the energy gap were decreased with exposure time, and absorption , Absorption coefficient, refractive index, extinction coefficient, dielectric …

Eye Detection Using Helmholtz Principle, Hanaa M. Ahmed, Shrooq R. Hameed

Baghdad Science Journal

Eye Detection is used in many applications like pattern recognition, biometric, surveillance system and many other systems. In this paper, a new method is presented to detect and extract the overall shape of one eye from image depending on two principles Helmholtz & Gestalt. According to the principle of perception by Helmholz, any observed geometric shape is perceptually "meaningful" if its repetition number is very small in image with random distribution. To achieve this goal, Gestalt Principle states that humans see things either through grouping its similar elements or recognize patterns. In general, according to Gestalt Principle, humans see things …

Widen People’S Career Opportunities With Ar Technology, Yuedan Shi

Theses

According to some existing research, a lot of people regret about their career selection due to the lack of sufficient knowledge and research when they made the decisions. By exploring the reasons, process, and factors that influence people’s decision-making, I designed an mobile application that help people find more career opportunities beyond their own living experience by leveraging AR recognition technology, and provided a platform for people to get sufficient information so that they could make a better choice for their future career.

Utilizing The College-Level Community Engagement Assessment Rubric To Identify Strengths, Weaknesses And Opportunities For Growth In Drexel University’S College Of Arts And Sciences, Cyndi R. Rickards, Jennifer Kebea, Brian Daley, Lawrence Souder

eJournal of Public Affairs

The College of Arts and Sciences (CoAS), one of Drexel’s largest colleges, has intentionally aimed to grow and deepen its commitment to civic engagement across the last decade. CoAS has significantly demonstrated a commitment to community engagement by making it a funding priority and creating a leadership position to support engagement. Because of the varying levels and formats of the college’s efforts towards civic engagement, a process of assessment was needed. To channel our assessment efforts we adopted Saltmarsh and Middleton’s pilot assessment rubric. A group of seven engaged faculty from across the college and the Executive Director of the …

On Eagle’S Wings: A Caregiver’S Story, Heather J. Carlson

Counseling and Family Therapy Scholarship Review

Increased attention is being focused on the Sandwich Generation, a rapidly growing subset of the adult population usually in their 40’s to 60’s who are the primary caregiver for children under the age of 18, as well an aging parent(s). The pull between the two generations is one of the greatest struggles facing mid-life adults ‘sandwiched’ between caring for their developing children and their aging parents. The delicacies of balancing logistical and emotional resources among the generations can be overwhelming for sandwich generation caregivers. The resulting stress on caregivers is related to higher absenteeism from work, levels of depression, …

Machine Learning And Deep Learning Applications For International Ocean Discovery Program Geoscience Research, Brandon De La Houssaye, Peter Flaming, Quinton Nixon, Gary Acton

SMU Data Science Review

In this paper, we present the use of a machine learning-based architecture for use in regression tasks with image data collected by the International Ocean Discovery Program (IODP) – in part funded by the U.S. National Science Foundation (NSF) – for scientific use during seago- ing operations aboard the JOIDES Resolution scientific drillship as well as onshore at the Texas A&M University IODP Headquarters. Our data science-driven approach integrates modern programming techniques in Python, computer vision, machine learning, and deep learning applica- tions with the traditional geoscience linear regression architecture such that the modeling of high-resolution spectral data with the …

Review Of Making Things And Drawing Boundaries, Greta K. Suiter

Journal of Contemporary Archival Studies

Jentery Sayers’s edited volume moves forward long-standing debates within the Digital Humanities. This collection of essays increase the reader’s general understanding of what the digital humanities are and will leave the reader with more questions around who the digital humanities are. Many of these essays work against expected disciplinary norms and assumptions and the reader is given multiple viewpoints to consider. Topics such as invisible labor and the value of labor, collaboration and inverting expertise expectations, and digital artifacts and how humanists study and/or create them, are given ample room for exploration and are examined from multiple perspectives with many …

Identifying Customer Churn In After-Market Operations Using Machine Learning Algorithms, Vitaly Briker, Richard Farrow, William Trevino, Brent Allen

SMU Data Science Review

This paper presents a comparative study on machine learning methods as they are applied to product associations, future purchase predictions, and predictions of customer churn in aftermarket operations. Association rules are used help to identify patterns across products and find correlations in customer purchase behaviour. Studying customer behaviour as it pertains to Recency, Frequency, and Monetary Value (RFM) helps inform customer segmentation and identifies customers with propensity to churn. Lastly, Flowserve’s customer purchase history enables the establishment of churn thresholds for each customer group and assists in constructing a model to predict future churners. The aim of this model is …

A Data Science Approach To Defining A Data Scientist, Andy Ho, An Nguyen, Jodi L. Pafford, Robert Slater

SMU Data Science Review

In this paper, we present a common definition and list of skills for a Data Scientist using online job postings. The overlap and ambiguity of various roles such as data scientist, data engineer, data analyst, software engineer, database administrator, and statistician motivate the problem. To arrive at a single Data Scientist definition, we collect over 8,000 job postings from Indeed.com for the six job titles. Each corpus contains text on job qualifications, skills, responsibilities, educational preferences, and requirements. Our data science methodology and analysis rendered the single definition of a data scientist: A data scientist codes, collaborates, and communicates – …

Predict Missed Ship Date Occurrence And Determine Root Cause Of Missed Ship Dates For Xyz Furniture Company, Selwyn Samuel, Shon Mohsin, Rida Moustafa

SMU Data Science Review

In this paper we analyze sales data from 2016-2018 consisting of 5,547,066 records and 30 categorical variables for XYZ Furniture company (XYZ) and answer two questions of interest. The first is given the sales order data, can we predict if the shipment will miss the estimated delivery date that is generated from XYZ's internal shipment delivery date estimator. We run the data through Support Gradient Descent Boost, Random Forest, Shallow Neural Net, and Deep Neural Net models. The Deep Neural Net model provides the highest accuracy at 84.74% of predicting if a given record will miss the estimated ship date. …

Fluorinated Coal Derived Carbons And Electrodes For Use In Battery Systems And Similar, Stephen M. Lipka, Christopher R. Swartz

Center for Applied Energy Research Faculty Patents

An electrode including fluorinated and surface defluorinated coal is described, as well as methods of producing such and employing such within an electrical system. The coal in the electrodes is fluorinated at an amount of between 0.3 and 1 .4. The resulting coal products can be further surface defluorinated and maintain functionality within an electrical system.

Fall Commencement Program, December 17, 2019, Coastal Carolina University

Commencement Programs

Program of Commencement Exercises at Coastal Carolina University.

Editorial: Fostering Creative Organizations: Antecedents, Processes, And Consequences Of Individual And Team Creativity, Sujin Lee, Mary C. Kern, Sukanlaya Sawang

Publications and Research

No abstract provided.

Stanford Program Inspiring Ohio Students To Be The Change (December 17, 2019), University Communications And Marketing

OHIO News Articles Archive

No abstract provided.

Rideshare Issues And Implications For Curb Management, Brandon Leonard Utterback

Landscape Architecture Masters & Design Theses - Archive

As autonomous vehicles continue to prove themselves on our roads today, a look at the considerations of implementation will be necessary. The potential for rethinking our infrastructure requirements, as a result of this new technology, could be a significant benefit to everyday life in terms of safety, congestion, and travel behavior. We must also consider the potential impact on the environment, which is often overlooked. If automobile infrastructure such as roads and parking lots are reduced in urban areas, how will this rediscovered urban space be used? How will planners, designers, and policymakers adapt our infrastructure needs when less pressure …

Enabling Data-Driven Transportation Safety Improvements In Rural Alaska, F. Lawrence Bennett, Jonathan B. Metzgar, Robert A. Perkins

CSET Project Reports

Safety improvements require funding. A clear need must be demonstrated to secure funding. For transportation safety, data, especially data about past crashes, is the usual method of demonstrating need. However, in rural locations, such data is often not available, or is not in a form amenable to use in funding applications. This research aids rural entities, often federally recognized tribes and small villages acquire data needed for funding applications. Two aspects of work product are the development of a traffic counting application for an iPad or similar device, and a review of the data requirements of the major transportation funding …

Mechanical Connection For Concrete Structures, George Morcous, Raed Tawadrous

Durham School of Architectural Engineering and Construction: Faculty Publications

A system and method for connecting precast concrete structures includes anchoring a sleeve within a pocket formed in one of the concrete structures , and placing the concrete structures in contact with one another such that the pocket is diposed around a protruding end of a shear connector embedded in the other concrete structure . A bridge is inserted around the protruding end of the shear connector and a fastener is installed onto the protruding end of the shear connector to engage the bridge and urge the bridge in abutting relation with a lip of the sleeve . The pocket …

Pediatric Brain Tumor Treatment At Uab Awarded Fda Grant For First-In-Human Study, Alicia Rohan

Browse All News

No abstract provided.

Low Temperature Liquid Metal Batteries For Energy Storage Applications, Cameron A. Lippert, Kunlei Liu, James Landon, Susan A. Odom, Nicolas E. Holubowitch

Center for Applied Energy Research Faculty Patents

The present invention relates to a molten metal battery of liquid bismuth and liquid tin electrodes and a eutectic electrolyte. The electrodes may be coaxial and coplanar. The eutectic electrolyte may be in contact with a surface of each electrode. The eutectic electrolyte may comprise ZnC1₂:KCI.

Individual Based Modeling And Analysis Of Pathogen Levels In Poultry Chilling Process, Zachary Mccarthy, Ben Smith, Aamir Fazil, Jianhong Wu, Shawn D. Ryan, Daniel Munther

Mathematics and Statistics Faculty Publications

Pathogen control during poultry processing critically depends on more enhanced insight into contamination dynamics. In this study we build an individual based model (IBM) of the chilling process. Quantifying the relationships between typical Canadian processing specifications, water chemistry dynamics and pathogen levels both in the chiller water and on individual carcasses, the IBM is shown to provide a useful tool for risk management as it can inform risk assessment models. We apply the IBM to Campylobacter spp. contamination on broiler carcasses, illustrating how free chlorine (FC) sanitization, organic load in the water, and pre-chill carcass pathogen levels affect pathogen levels …

To Freeze Or Not To Freeze: That Is The Question: A Look At Freezeback Landfills And Final Cover Designs, Sarah Durand

Engineering

Freezeback landfills are an exciting concept but challenging in execution. There is not a single variable that leads to the success of a freezeback landfills but multiple variables in balance with each other that allow for freezeback to occur. Freezeback landfills should be engineered to the site-specific environment at the initial design stage for a better chance of success rather than following the generalized regulatory requirements. This project looked at three freezeback landfills as case studies and evaluated the final cover design of the first two in identifying parameters that lead to success in reaching and maintaining freezeback status. The …

A Study Of Overpressure In The Navarin Basin, Alaska, Matthew Robison

Engineering

The Navarin basin is a region to the west of Alaska between the Aleutian Islands and Russia. It has been identified as a potential Petroleum prospect, and exploration wells have been drilled under the ocean up to depths of 17,000 feet. The exploration of the basin was started by Russia and the United States with several exploratory wells drilled in the 1980’s. The geology of the region consists of tertiary sedimentary rock deposited during the Eocene age with mudstone and siltstone from Paleogenic deposition. When dealing with such depths, it is expected that the pressure will increase beyond the hydrostatic …

General Education Subcommittee Minutes, December 17, 2019, Utah State University

Educational Policies Committee

• Course approvals
• Reviewing and Approving General Education Designation Proposals
• Update from the Composition Assessment Working Group

Attitudes Towards Teaching Computational Thinking And Computer Science: Insights From Educator Interviews And Focus Groups, Jorge Valenzuela

Journal of Computer Science Integration

In the last three years, integration of both computational thinking (CT) and computer science (CS) into K-12 instruction has become a focus of many schools throughout the Commonwealth of Virginia and the United States. With this new widespread demand, educational leaders and educators are focusing efforts on understanding the core concepts and practices of CT and CS, looking for logical connections for integrating across curriculum, and seeking strategies for implementing a wide variety of educational technology tools (apps and devices). This phenomenological research study was designed to gather depth information from 14 K-16 educators through both semi-structured interviews and two …

Detecting Myocardial Infarctions Using Machine Learning Methods, Aniruddh Mathur

Master's Projects

Myocardial Infarction (MI), commonly known as a heart attack, occurs when one of the three major blood vessels carrying blood to the heart get blocked, causing the death of myocardial (heart) cells. If not treated immediately, MI may cause cardiac arrest, which can ultimately cause death. Risk factors for MI include diabetes, family history, unhealthy diet and lifestyle. Medical treatments include various types of drugs and surgeries which can prove very expensive for patients due to high healthcare costs. Therefore, it is imperative that MI is diagnosed at the right time. Electrocardiography (ECG) is commonly used to detect MI. ECG …

Modeling Volcanic Ash And Sulfur Dioxide With The Weather Research Forecasting With Chemistry (Wrf-Chem) Model, Sean D. Egan

Chemistry and Biochemistry

The Weather Research Forecasting with Chemistry (WRF-Chem) model is capable of modeling volcanic emissions of ash, sulfur dioxide and water vapor. Here, it is applied to eruptions from three volcanoes: the 2008 eruption of Kasatochi Volcano in Alaska, the 2010 eruption of Eyjafjallajökull in Iceland and the 2019 eruption of Raikoke in the Kurile Islands. WRF-Chem's ability to model volcanic emissions dispersion is validated through comparison of model output to remote sensing, in situ and field measurements. A sensitivity of the model to modeled plume height is discussed. This work also modifies the base WRF-Chem code in three ways and …

Effects Of Wind Energy Utilization On Long-Run Fuel Consumption In Remote Alaska Microgrids, Laura K. Vaught

Economics

This paper presents an empirical analysis of the long-run reduction in diesel fuel consumption driven by wind energy utilization in remote Alaska electrical grids. Models control for other fuel consumption determinants including customer base and transmission and distribution system efficiency. Fourteen rural communities that integrated wind energy into their diesel powered electrical grids are analyzed within a dynamic panel framework using monthly utility data spanning sixteen years, from 2001 to 2017. An auto-regressive distributed lag approach is taken to address cointegration and presence of a unit root in the data. Long-run parameters are estimated for the full dataset as well …