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An Investigation On The Resonance Observed In A Spirally Shielded Twinaxial Differential Pair, David Richard Levine

Master's Theses and Capstones

Spirally shielded twinaxial cable assemblies are extensively used in multi-gigabit-per-second digital telecommunications systems. Unlike ideally shielded Twinaxial cables, spirally shielded cables exhibit resonant behavior which limits system throughput.

This body of work illustrates a predictive method for determining resonant behavior in twinaxial cables through physical measurement of commercially available cables and analogous transmission line fixtures, full-wave and quasi-static simulations, and equivalent circuit analysis.

It will be shown that frequency dependent standing wave resonances in twinaxial cables are independent of cable length and dependent on cross-sectional feature sizes, dielectric properties, and spiral shield pitch.

Pseudocapacitive Potassium Manganese Oxide Birnessite Nanosheets For Asymmetric Electrochemical Capacitors, Matthew P. Yeager

Master's Theses and Capstones

The goal of this research was to explore the use of manganese dioxide (MnO2) for incorporation into composite pseudocapacitor (PC) electrode materials. Desired morphologies were explored and obtained to promote redox activity with increased active surface areas while simultaneously reducing the electron diffusion paths for rapid energy delivery. We report facile syntheses of a two-dimensional MnO2 material, which was fully characterized by electron microscopy, XRD, EDS and thermogravimetric analyses. Electrode materials were tested in both three-electrode and two-electrode cells. To further elucidate the properties of the evolving valence states during discharge processes, an in situ XANES cell was constructed, permitting …

Asme Early Career Technical Journal (Front Matter), Asme Ectc Coordinating Committee

Early Career Technical Journal (ECTJ)

Proceedings of the ASME Early Career Technical Conference, November 4-5, 2011. Woodruff School of Mechanical Engineering, Georgia Institute of Technology, Atlanta, Georgia

pp. i-xiv

Section 2: Materials, Asme Ectc Coordinating Committee

Early Career Technical Journal (ECTJ)

Proceedings of the ASME Early Career Technical Conference, November 4-5, 2011. Woodruff School of Mechanical Engineering, Georgia Institute of Technology, Atlanta, Georgia

pp. 45-94

Section 3: Dynamic Systems & Control, Asme Ectc Coordinating Committee

Early Career Technical Journal (ECTJ)

Proceedings of the ASME Early Career Technical Conference, November 4-5, 2011. Woodruff School of Mechanical Engineering, Georgia Institute of Technology, Atlanta, Georgia

pp. 95-136

Section 5: Numerical Methods, Asme Ectc Coordinating Committee

Early Career Technical Journal (ECTJ)

Proceedings of the ASME Early Career Technical Conference, November 4-5, 2011. Woodruff School of Mechanical Engineering, Georgia Institute of Technology, Atlanta, Georgia

pp. 195-218

Section 6: Fluids Engineering, Asme Ectc Coordinating Committee

Early Career Technical Journal (ECTJ)

Proceedings of the ASME Early Career Technical Conference, November 4-5, 2011. Woodruff School of Mechanical Engineering, Georgia Institute of Technology, Atlanta, Georgia

pp. 219-250

Modeling Ventilation And Perfusion Mismatch During Acute Lung Injury, Le Yang, Ramana Pidaparti, Huan Mo

Early Career Technical Journal (ECTJ)

Proceedings of the ASME Early Career Technical Conference, November 4-5, 2011. Woodruff School of Mechanical Engineering, Georgia Institute of Technology, Atlanta, Georgia

Section 1: Bio-Medical/Bioengineering; pp. 40-44

Molecular Dynamics Modeling And Simulations For Mechanical Property Prediction Of Cementitious Material Constituents Under Varying Pressure Conditions, Ahmad Mohamed, Ramana Mohan

Early Career Technical Journal (ECTJ)

Proceedings of the ASME Early Career Technical Conference, November 4-5, 2011. Woodruff School of Mechanical Engineering, Georgia Institute of Technology, Atlanta, Georgia

Section 2: Materials; pp. 63-70

Peridynamic Analysis Of Crack-Inclusion Interaction In Unidirectional Fiber-Reinforced Composites, Sayna Ebrahimi, Anh-Vu Phan

Early Career Technical Journal (ECTJ)

Proceedings of the ASME Early Career Technical Conference, November 4-5, 2011. Woodruff School of Mechanical Engineering, Georgia Institute of Technology, Atlanta, Georgia

Section 2: Materials; pp. 84-89

Force Controlled Interaction Tasks And Intuitive Teaching Of A Pneumatic Manipulator 97, Yong Zhu, Eric J. Barth

Early Career Technical Journal (ECTJ)

Proceedings of the ASME Early Career Technical Conference, November 4-5, 2011. Woodruff School of Mechanical Engineering, Georgia Institute of Technology, Atlanta, Georgia

Section 3: Dynamic Systems & Control; pp. 97-104

Instantaneous Optimal Control Of A Predator-Prey Natural Resource With A Prey-Dependent Functional Response, Dale B. Mcdonald

Early Career Technical Journal (ECTJ)

Proceedings of the ASME Early Career Technical Conference, November 4-5, 2011. Woodruff School of Mechanical Engineering, Georgia Institute of Technology, Atlanta, Georgia

Section 3: Dynamic Systems & Control; pp. 105-112

Asme Early Career Technical Journal (Complete Issue), Asme Ectc Coordinating Committee

Early Career Technical Journal (ECTJ)

Proceedings of the ASME Early Career Technical Conference, November 4-5, 2011. Woodruff School of Mechanical Engineering, Georgia Institute of Technology, Atlanta, Georgia

Modeling The Heat Loss Of A Thermal Energy Storage System Using Ansys Workbench, Jonathan D. Roop, Sheldon Jeter, Jake Stephens

Early Career Technical Journal (ECTJ)

Proceedings of the ASME Early Career Technical Conference, November 4-5, 2011. Woodruff School of Mechanical Engineering, Georgia Institute of Technology, Atlanta, Georgia

Section 4: Energy Generation & Conversion; pp. 187-193

Comparison Of The Length Factor Artificial Neural Network And Finite Element Methods For Solving Boundary Value Problems, Kevin Mcfall, Patrick Mcenroe

Early Career Technical Journal (ECTJ)

Proceedings of the ASME Early Career Technical Conference, November 4-5, 2011. Woodruff School of Mechanical Engineering, Georgia Institute of Technology, Atlanta, Georgia

Section 5: Numerical Methods; pp. 197-202

Mathematical Analysis Of Rope Braiding, Mitchell J. Isaac, Chad L. Rodekohr, David J. Branscomb

Early Career Technical Journal (ECTJ)

Proceedings of the ASME Early Career Technical Conference, November 4-5, 2011. Woodruff School of Mechanical Engineering, Georgia Institute of Technology, Atlanta, Georgia

Section 5: Numerical Methods; pp. 211-218

Mixing Time Determination Of Steady And Pulse Jet Mixers, Ibraheem R. Muhammad, John P. Kizito

Early Career Technical Journal (ECTJ)

Proceedings of the ASME Early Career Technical Conference, November 4-5, 2011. Woodruff School of Mechanical Engineering, Georgia Institute of Technology, Atlanta, Georgia

Section 6: Fluids Engineering; pp. 221-227

Open-Architecture Composite Tube Design And Manufacture, David Branscomb, Austin Gurley, David Beal, Royall Broughton

Early Career Technical Journal (ECTJ)

Proceedings of the ASME Early Career Technical Conference, November 4-5, 2011. Woodruff School of Mechanical Engineering, Georgia Institute of Technology, Atlanta, Georgia

Section 7: Design & Manufacturing; pp. 270-276

Investigating The Effect Of System Pressure On Trihalomethane Post-Treatment Diffused Aeration, John M. Zwerneman

Master's Theses and Capstones

The current study has obtained removal data for the four major trihalomethanes (chloroform, bromodichloromethane, dibromochloromethane, and bromoform) in a bench-scale, batch diffused aeration reactor under system pressures of 0-, 25-, 50-, and 70-psig. The removal data for each pressure was compared, and it is clear that trihalomethane air-stripping removals decrease with increasing system pressure.

Trihalomethane removal data was also collected for a bench-scale, continuous-flow diffused aeration reactor at pressures of 25-psi and 50-psi. A similar decrease in removals was observed at higher pressures for the continuous-flow system.

A model was formulated that predicts Henry's Law Constant for each trihalomethane at …

Multi-Protein Detection Of Endothelial Cell Inflammation And Single Cells' Heterogeneity Study, Jingwen Chai

Master's Theses and Capstones

Endothelial inflammation plays major roles in all phases of atherosclerotic process and both innate immunity and endothelial adhesion molecules contribute to endothelial inflammation. In this thesis, there are three main parts regarding the endothelial cell inflammation and multiple protein detection. In the first part, we applied multiple antibodies (Abs) to measure changes in expression levels of six proteins in response to inflammatory stimulation, and we observed different dynamic behaviors in them. In the second part, we applied emission fingerprinting technique provided by Zeiss LSM 510 META detector, and achieved the concurrent detection of ten proteins expressed on the same endothelial …

Green Transportation For A Green Earth, Petros J. Katsioloudis, Mildred V. Jones

STEMPS Faculty Publications

Transportation is one of the biggest contributors to the destruction of the environment. Results from environmental research and pursuant governmental regulations are changing the way companies do business and how transportation systems address the future. The Environmental Protection Agency (EPA) has been at the forefront in leading environmental research and instituting policies and regulations to fight the issues impacting the environment. The transportation industry and consumers alike are concerned about the environment, energy resources, efficiencies, and economics. In this article, the authors suggest that it is vital that people promote the protection of the environment and strengthen the laws that …

Mandibular Bone Mechanics And Evaluation Of Temporomandibular Joint Devices, Shirishkumar Marutirao Ingawale

Browse all Theses and Dissertations

Knowledge of the mandibular and temporomandibular joint (TMJ) biomechanics is of importance in various clinical scenarios as it helps better understanding of the structure and function necessary to diagnose, prevent, and treat temporomandibular disorder (TMD). The objectives of this dissertation research were to characterize biomechanical behavior of cadaveric human mandible, and to design and analyze patient-specific total TMJ prostheses. We performed a combined experimental-numerical study to validate the finite element (FE) models of 16 cadaveric human mandibles by comparing strain gauge measurements with FE-predicted surface strains. Analysis of experimental data showed that strains at the condylar locations were significantly different …

An Information Theory Based Representation Of Software Systems And Design, Zekai Demirezen

All ETDs from UAB

Software designers can benefit from the experience of engineering designers and information theory formalism. Every design starts with uncertainty and the art of software design involves uncertainty reduction. Information theory enables software designers to adopt a systems view that facilitates intellectual control over a given software design. Since design imposes organization through successive transformations in reaching the final product, it is possible to formalize design with information theory. We investigated software design as a hierarchical decomposition of design spaces. We realized that before initiating the software design process there is minimal organization, representing higher entropy. The design decisions carrying out …

Designing Optimal Aviation Baggage Screening Strategies Using The Monkey Search Algorithm, Edgar Ivan Jimenez

Open Access Theses & Dissertations

This thesis addresses the aviation baggage screening design problem considering several baggage screening devices which may be used for system implementation, the devices have different false clear and false alarm rates, throughput and purchase costs. In the present research, a comprehensive cost function which not only includes the cost associated with purchase and operation of baggage security devices, but also includes the indirect costs associated with device errors is used. A new monkey search based evolutionary algorithm is presented to determine the best selection of baggage screening security devices in order to minimize the expected annual total cost. The final …

A Teaching Practice Review Of The Use Of Multiple-Choice Questions For Formative And Summative Assessment Of Student Work On Advanced Undergraduate And Postgraduate Modules In Engineering, Aidan O'Dwyer

Articles

This paper reflects on, reports on and evaluates the use of multiple-choice questions, in both formative and summative assessment modes, on control engineering modules taken by advanced undergraduate and postgraduate engineering students, over four academic years. The material covered by the modules is analytical in nature. The rationale for examining the assessment strategy was the poor performance by students in a closed book traditional terminal examination on one of the advanced undergraduate modules over some years. The change in assessment strategy has improved student learning, as measured by assessment data; student feedback on the assessment methods is broadly positive. The …

Quantification And Reconstruction In Photoacoustic Tomography, Zijian Guo

All Theses and Dissertations (ETDs)

Optical absorption is closely associated with many physiological important parameters, such as the concentration and oxygen saturation of hemoglobin. Conventionally, accurate quantification in PAT requires knowledge of the optical fluence attenuation, acoustic pressure attenuation, and detection bandwidth. We circumvent this requirement by quantifying the optical absorption coefficients from the acoustic spectra of PA signals acquired at multiple optical wavelengths. We demonstrate the method using the optical-resolution photoacoustic microscopy: OR-PAM) and the acoustical-resolution photoacoustic microscopy: AR-PAM) in the optical ballistic regime and in the optical diffusive regime, respectively. The data acquisition speed in photoacoustic computed tomography: PACT) is limited by the …

Artification, Fine Art, And The Myth Of "The Artist", Larry Shiner

Contemporary Aesthetics (Journal Archive)

I begin by examining three concepts of “artification:” the decoration, transformation, and modification. I argue that the typical business argument for artification claims that since businesses must be constantly innovating and since art and artists are the principal locus of creativity in our society, businesses must be “artified.” I argue that these claims about artists and creativity are based on widely accepted conventional views about art and artists that are false. I illustrate my general argument by examining one of the best statements of the case for business artification, Austin’s and Devin’s book, Artful Making, showing that artful making is …

2011 Fall Engr333 Project Final Report, Fall 2011 Engr333

ENGR 333

Analysis of the Bunker Interpretive Center (BIC) began during the spring of 2011 with the Engineering 382 Instrumentation Lab. To determine the energy use at the BIC, sensing equipment was placed on 44 different energy consuming devices, ranging from pumps to lights to heating and ventilation (HVAC) equipment. These data were collected over the spring and summer and then analyzed by the Engineering 333 Thermal Systems Design class during the fall of 2011. The class was tasked with determining whether or not the BIC was eligible for Energy Star certification. While the building was built to be LEED Gold certified, …

2011 Fall Engr333 Student Seminar Presentation, 2011 Fall Engr333

ENGR 333

File for student presentation, given by students in the Fall 2010 class of ENGR333.

Detection Of Diffuse Sea Floor Venting Using Structured Light Imaging, Gabrielle Inglis, Clara Smart, Christopher Roman, Steven Carey

Graduate School of Oceanography Faculty Publications

Efficiently identifying and localizing diffuse sea floor venting at hydrothermal and cold seep sites is often difficult. Actively venting fluids are usually identified by a temperature induced optical shimmering seen during direct visual inspections or in video data collected by vehicles working close to the sea floor. Relying on such direct methods complicates establishing spatial relations between areas within a survey covering a broad area. Our recent work with a structured light laser system has shown that venting can also be detected in the image data in an automated fashion. A structured light laser system consists of a camera and …