Engineering Commons^™

Toward Controllable And Robust Surface Reconstruction From Spatial Curves, Zhiyang Huang

McKelvey School of Engineering Graduate Student Theses & Dissertations

Reconstructing surface from a set of spatial curves is a fundamental problem in computer graphics and computational geometry. It often arises in many applications across various disciplines, such as industrial prototyping, artistic design and biomedical imaging. While the problem has been widely studied for years, challenges remain for handling different type of curve inputs while satisfying various constraints. We study studied three related computational tasks in this thesis. First, we propose an algorithm for reconstructing multi-labeled material interfaces from cross-sectional curves that allows for explicit topology control. Second, we addressed the consistency restoration, a critical but overlooked problem in applying …

Recent Advances In Low-Cost Particulate Matter Sensor: Calibration And Application, Jiayu Li

McKelvey School of Engineering Graduate Student Theses & Dissertations

Particulate matter (PM) has been monitored routinely due to its negative effects on human health and atmospheric visibility. Standard gravimetric measurements and current commercial instruments for field measurements are still expensive and laborious. The high cost of conventional instruments typically limits the number of monitoring sites, which in turn undermines the accuracy of real-time mapping of sources and hotspots of air pollutants with insufficient spatial resolution. The new trends of PM concentration measurement are personalized portable devices for individual customers and networking of large quantity sensors to meet the demand of Big Data. Therefore, low-cost PM sensors have been studied …

Elucidating The Roles Of Astrocyte-Derived Factors In Recovery And Regeneration Following Spinal Cord Injury, Russell E. Thompson

McKelvey School of Engineering Graduate Student Theses & Dissertations

Central nervous system (CNS) injury often causes some level of long-term functional deficit, due to the limited regenerative potential of the CNS, that results in a decreased quality of life for patients. CNS regeneration is inhibited partly by the development of a glial scar following insult that is inhibitory to axonal growth. The major cell population responsible for the formation this glial scar are astrocytes, which has led to the belief that astrocytes are primarily inhibitory following injury. Recent work has challenged this conclusion, finding that astrocyte reactivity is heterogeneous and that some astrocytes are pro-regenerative following injury. Astrocyte transplantation …

Exploring Methodologies To Improve Lignin Utilization In Biorefineries, James Meyer

McKelvey School of Engineering Graduate Student Theses & Dissertations

The increasing world population, coupled with an improving quality of life, has driven a rapidly increasing demand for fuels, chemicals, and materials. Fossil carbon feedstocks, such as petroleum, are currently being consumed to meet these demands. The utilization of these feedstocks has negative impacts on human and environmental health, which are undoubtedly intensifying as a result of the increased reliance required to meet these demands. As an alternative way to meet these demands, biorefineries generate a wide range of fuels, chemicals, and materials from biomass, a renewable and sustainable resource. Current second-generation biorefineries use a plant-based feedstock, lignocellulosic biomass, comprised …

Ultrasound-Guided Optical Techniques For Cancer Diagnosis: System And Algorithm Development, Atahar Kamal Mostafa

McKelvey School of Engineering Graduate Student Theses & Dissertations

Worldwide, breast cancer is the most common cancer among women. In the United States alone, the American cancer society has estimated there will be 271,270 new breast cancer cases in 2019, and 42,260 lives will be lost to the disease. Ultrasound (US), mammography, and magnetic resonance imaging (MRI) are regularly used for breast cancer diagnosis and therapy monitoring. However, they sometimes fail to diagnose breast cancer effectively. These shortcomings have motivated researchers to explore new modalities. One of these modalities, diffuse optical tomography (DOT), utilizes near-infrared (NIR) light to reveal the optical properties of tissue. NIR-based DOT images the contrast …

Improved Orthopaedic Repairs Through Mechanically Optimized, Adhesive Biomaterials, Stephen Wheeler Linderman

McKelvey School of Engineering Graduate Student Theses & Dissertations

Despite countless surgical advances over the last several decades refining surgical approaches, repair techniques, and tools to treat tendon and tendon-to-bone injuries, we are still left with repair solutions that rely on fairly crude underlying mechanical principles. Musculoskeletal soft tissues have evolved to transfer high loads by optimizing stress distribution profiles across the tissue at each length scale. However, instead of mimicking these natural load transfer mechanisms, conventional suture approaches are limited by high load transfer across only a small number of anchor points within tissue. This leads to stress concentrations at anchor points that often cause repair failure as …

Defect Chemistry And Ion Intercalation During The Growth And Solid-State Transformation Of Metal Halide Nanocrystals, Bo Yin

McKelvey School of Engineering Graduate Student Theses & Dissertations

Abstract of the Dissertation

Defect Chemistry and Ion Intercalation During the Growth and Solid-State Transformation of Metal Halide Nanocrystals

Semiconductor metal halides as light-sensitive materials have applications in multiple areas, such as photographic film, antibacterial agents and photocatalysts. One focus of this dissertation is to achieve novel morphologies of ternary silver bromoiodide (AgBr1-xIx, 0

For the silver halide system, we demonstrate that the anion composition of AgBr1-xIx nanocrystals determines their shape through the introduction of twin defects as the nanocrystals are made more iodide-rich. AgBr1-xIx nanocrystals grow as single-phase, solid solutions with the rock salt crystal structure for anions compositions …

Real-Time Reliable Middleware For Industrial Internet-Of-Things, Chao Wang

McKelvey School of Engineering Graduate Student Theses & Dissertations

This dissertation contributes to the area of adaptive real-time and fault-tolerant systems research, applied to Industrial Internet-of-Things (IIoT) systems. Heterogeneous timing and reliability requirements arising from IIoT applications have posed challenges for IIoT services to efficiently differentiate and meet such requirements. Specifically, IIoT services must both differentiate processing according to applications' timing requirements (including latency, event freshness, and relative consistency of each other) and enforce the needed levels of assurance for data delivery (even as far as ensuring zero data loss). It is nontrivial for an IIoT service to efficiently differentiate such heterogeneous IIoT timing/reliability requirements to fit each application, …

Investigation Of The Optical Properties Of Insb Thin Films Grown On Gaas By Temperature-Dependent Spectroscopic Ellipsometry, Yuanlan Liang, Fangze Wang, Xuguang Luo, Qingxuan Li, Tao Lin, Ian T. Ferguson, Qingyi Yang, Lingyu Wan, Zhe Chuan Feng

Electrical and Computer Engineering Faculty Research & Creative Works

InSb thin films were grown on GaAs substrates by metal organic chemical vapor deposition (MOCVD) and investigated by temperature-dependent spectroscopic ellipsometry (TD-SE). The refractive index, extinction coefficient, and dielectric function of the InSb films were extracted. The variation of critical point energies (E 1 , E 1 +Δ 1 , E 2 , E1') related to the excited state transitions of InSb and the second energy derivatives of the dielectric function at different temperatures showed that the InSb thin film had high electrical and optical stability at the evaluated temperatures. TD-SE analysis revealed a temperature range suitable for the use …

Top 10 Mistakes In Environmental Data Management, Stephanie Lein, Matthew Miller, Deanna Aungst

World of Coal Ash Proceedings

No abstract provided.

The Future Of Geomembrane Installation: Utilizing Smart Technology & Data Acquisition To Enhance Installation Standards, Project Qc/Qa And Reporting, Allen Bullock

World of Coal Ash Proceedings

No abstract provided.

Evaluation Of 'Off-Spec' Biomass, Co-Fired And Reclaimed Ashes For Use In Concrete, Daniel Benkeser, Xenia Wirth, N.N. Nortey Yeboah, Chris Shearer

World of Coal Ash Proceedings

No abstract provided.

Nu-Rock Process To Make Nu-Concrete Products And Concrete Replacement., Maroun George Rahme

World of Coal Ash Proceedings

No abstract provided.

Synthesis Of Coal Bottom Ash (Cba)-Based Geopolymer With Microwave Energy Appended To Conventional Dry-Oven Curing Process, Hyo Kim, Cheol-Woo Park, Jun-Seong Park

World of Coal Ash Proceedings

No abstract provided.

Evaluation Of The Application Of Bottom Ashes From Thermoelectric In Concrete Blocks For Pavements, Webert Silva, Suelly Barroso, Antonio Cabral

World of Coal Ash Proceedings

No abstract provided.

Recovery Of Carbonaceous Solid Residue (Char) From Coal Ash To Use As Possible Substitute Graphite-Based Materials In Green Energy Applications, Ana C. Santos, Charlotte J. Badenhorst, Barbara Białecka, Joanna Całus-Moszko

World of Coal Ash Proceedings

No abstract provided.

Use Of Supplementary Cementitious Materials In Full-Depth Reclamation Of Asphalt Pavements, Omar Amer, Prasad Rangaraju

World of Coal Ash Proceedings

No abstract provided.

Demonstration Of A Dredge-Fed Fly Ash Hydraulic Classifier/Thickener At The Cardinal Power Plant Pond, Tom Robl, Anne Oberlink

World of Coal Ash Proceedings

No abstract provided.

Closed Loop System For Coal Combustion Residual Dredging And Dewatering From A Recycle Pond With Landfill Placement, Jerry Vetter, Eric Zeigler

World of Coal Ash Proceedings

No abstract provided.

How Clean? A Methodology To Assess Progress Of Ccr Cleanup In Real Time, Laura Powers, Victoria Jennings

World of Coal Ash Proceedings

No abstract provided.

Dam Repair & Rehabilitation At An Active Coal Ash Pond, Chris Colangelo

World of Coal Ash Proceedings

No abstract provided.

Passive Treatment Of Acid Mine Drainage Using South African Coal Fly Ash, Column Leaching Study, Etienne Beya Nkongolo, Vinny Ndjate Katambwe, Methode Rosicky Kalombe, John Kevern

World of Coal Ash Proceedings

No abstract provided.

Sulfate-Activated Class C Fly Ash Based Cements, Tristana Duvallet

World of Coal Ash Proceedings

No abstract provided.

Center For Coal-Derived Low Energy Materials For Sustainable Construction, Bob Jewell, Tom Robl, Anne Oberlink, Tristana Duvallet

World of Coal Ash Proceedings

No abstract provided.

Preliminary Study Of The Potential Of A Beneficiated Ultrafine Class F Fly Ash, L. K. Crouch, Alex Kelley

World of Coal Ash Proceedings

No abstract provided.

Use Of Multi-Linear Drainage Geocomposites For Ccp Disposal Units Final Cover, Stephan Fourmont, Pascal Saunier

World of Coal Ash Proceedings

No abstract provided.

Utilizing Ccp's As A Building Material To Create Cost-Effective Additional Airspace In Ccp Monofills, Mark Roberts

World of Coal Ash Proceedings

No abstract provided.

Design Approach And Considerations For Reuse Of Bottom Ash Transport Water As Make-Up Water For Fgd Systems, Kevin Mcdonough

World of Coal Ash Proceedings

No abstract provided.

Finding Balance: How Future Use Guides Ash Pond Closure Strategies, Eric Nelson

World of Coal Ash Proceedings

No abstract provided.

Fluidized Bed Combustion Fly Ash Leaching: A Column Study, Mina Mohebbi, Farshad Rajabipour, Randy Lindenmuth

World of Coal Ash Proceedings

No abstract provided.