Entire DC Network | Open Access Articles | Digital Commons Network™

Ut Arlington Library Notes, V.14, No.1, Fall 2008, University Of Texas At Arlington Library

UT Arlington Library Notes

Former publication of the UT Library intended to foster community support and appreciation for Library Programs and services and to spotlight grants and contributions. It was published during the 1990s and 2000s.

Go to article

Acknowledgements, The Mcnair Team

McNair Scholars Research Journal

No abstract provided.

Go to article

Mentor Profile, The Mcnair Team

McNair Scholars Research Journal

No abstract provided.

Go to article

Bringing Information Theory To Bear On Justified True Belief, Mary Stephanie Cook

McNair Scholars Research Journal

No abstract provided.

Go to article

Operations-Oriented Performance Measures For Freeway Management Systems: Final Report, Robert E. Brydia, Stephen P. Mattingly, Melanie L. Sattler, Auttawit Upayokin

Civil Engineering Faculty Publications - Archive

This report describes the second and final year activities of the project titled “Using Operations-Oriented Performance Measures to Support Freeway Management Systems.” Work activities included developing a prototype system architecture for testing the use of performance measures in real-time. Outputs from this effort included operator’s screens, a prototype database, and a concept of operations for using the real-time measures. Additional work showcased the application of a multi-criterion screening approach to the selection of competing performance measures.

Go to article

Full Issue, The Mcnair Team

McNair Scholars Research Journal

No abstract provided.

Go to article

Empirical Two-Point Α-Mixing Model For Calibrating The Ech2o Ec-5 Soil Moisture Sensor In Sands, Toshihiro Sakaki, Anuchit Limsuwat, Kathleen M. Smits, Tissa H. Illangasekare

Civil Engineering Faculty Publications - Archive

Recently improved ECH2O soil moisture sensors have received significant attention in many field and laboratory applications. Focusing on the EC-5 sensor, a simple and robust calibration method is proposed. The sensor-to-sensor variability in the readings (analog-to-digital converter (ADC) counts) among 30 EC-5 sensors was relatively small but not negligible. A large number of ADC counts were taken under various volumetric water contents (?) using four test sands. The proposed two-point a-mixing model, as well as linear and quadratic models, was fitted to the ADC – ? data. Unlike for conventional TDR measurements, the effect of sensor characteristics is lumped into …

Go to article

The Compass Rose Vol. Xxii, No. 2, University Of Texas At Arlington Library Special Collections & Archives

The Compass Rose

The purpose of The Compass Rose is to raise awareness of Special Collections' resources and to foster the use of these resources. The newsletter also reports significant new programs, initiatives, and acquisitions of Special Collections. The issues included here are scans of print newsletters from the 1990s and 2000s. Current issues and posts of The Compass Rose can now be accessed on the UTA Libraries Compass Rose Blog.

Go to article

A Search For Creative Class Trail User Experiences Along The Katy Trail, Shirley Jane Mathews

Landscape Architecture Masters & Design Theses - Archive

This research focused on preferred urban trail attributes and related these to restorative places and user experiences. Focused interviews were employed in the study. Restoration was shown in aspects of naturalness and excitement. Responses to the interviews indicated that a convergence of multiple physical features contributed significantly to a user's restorative experience on the trail, especially where tree canopy was juxtaposed with distant views and there were connections to active urban villages. Where the trail did not enhance the user experience the trail was not seen as contributing to the community in a significant way. Themes emerged from the focused …

Go to article

Application Of The Historic Preservation Index Strategy To Historic Vernacular Landscape, Sonal D. Parmar

Landscape Architecture Masters & Design Theses - Archive

The aim of this study is to form a matrix for the understanding and preservation approach for Historic Vernacular Landscapes applying the Historic Preservation Index strategy. The U.S. National Park Service (NPS) Historic Landscape Initiative (HLI), which promotes responsible preservation practices that protect the nation's designed landscapes, is developing an index of historical designed landscapes. The goal of the index is to create a comprehensive, searchable database for prioritizing and realizing future nominations for the National Register of Historic Places. This study evaluates the ongoing process for creating the index for historical designed landscapes on parameters identified by the National …

Go to article

A Mathematical Model Development And Sensitivity Analysis Of Two Photon Polymerization For 3d Micro/Nano Fabrication, Nitin Uppal

Mechanical and Aerospace Engineering Dissertations - Archive

Two photon polymerization (2PP) is an effective technique for the fabrication of complex polymeric 3-D micro/nano features using ultrashort pulses from a NIR laser source. The photosensitive material absorbs two photons and initiates the chain polymerization reaction. The interaction of laser pulses with photo responsive resin creates a voxel (volumetric pixel) which defines the resolution of 2PP process. In this work, a mathematical model of the polymerization process that considers the effects of molecular diffusion and polymerization kinetics on the formation of voxel. The increase in temperature upon polymerization and their effect on the polymerization kinetics and molecular diffusion is …

Go to article

A Least-Squares/Galerkin Split Finite Element Method For Incompressible And Compressible Navier-Stokes Equations, Rajeev Kumar

Mechanical and Aerospace Engineering Dissertations - Archive

Over the years Galerkin finite element method along with its variants has been used to solve incompressible and compressible Navier-Stokes equations. The Galerkin method which is more suited for self-adjoint type system of equations like in solid mechanics and heat conduction struggles when applied to non self-adjoint type systems like one encountered in fluid dynamics. Velocity and pressure variables have to be approximated using functions which belong to different spaces and must satisfy the tough LBB condition. The least-squares finite element method (LSFEM), which is based on minimizing the l2-norm of the residual, has many attractive advantages over Galerkin finite …

Go to article

The Development And Testing Of Pulsed Detonation Engine Ground Demonstrators, Philip Koshy Panicker

Mechanical and Aerospace Engineering Dissertations - Archive

The successful implementation of a PDE running on fuel and air mixtures will require fast-acting fuel-air injection and mixing techniques, detonation initiation techniques such as DDT enhancing devices or a pre-detonator, an effective ignition system that can sustain repeated firing at high rates and a fast and capable, closed-loop control system. The control system requires high-speed transducers for real-time monitoring of the PDE and the detection of the detonation wave speed. It is widely accepted that the detonation properties predicted by C-J detonation relations are fairly accurate in comparison to experimental values. The post-detonation flow properties can also be expressed …

Go to article

Design And Fabrication Of Piezoelectric Micro Generator Using Laser Micromachining And Mems Technique, Hyunuk Kim

Material Science and Engineering Theses - Archive

An energy harvesting device based on PbPb(Zr0.52Ti0.48)O3-Pb(Zn1/3Nb2/3)O3 ceramics was fabricated by using laser micromachining technique. It was found that the laser machining process did not have a significant effect on electrical properties of piezoelectric material. The device was found to generate continuous power of 1.13 μW at. 870Hz across a 288.5 kΩ load with power density of 301.3 μW/cm3. The characterization was conducted in low frequency regime of 50-1000Hz at the constant force of 8g(where g=9.8m/s2) In order to fabricate a lead free MEMS device, BaTiO3 was selected as the piezoelectric material. BaTiO3 gel was synthesized by aqueous process using …

Go to article

Analytical Thermal Model Of A Generic Multi-Layer Spacerless 3d Package, Erantha Nuwan Rodrigo

Mechanical and Aerospace Engineering Theses - Archive

Analytical Thermal Model of a Generic Multi-Layer Spacerless 3D Package Abstract The need for more functions in a single device has lead to die stacking architecture. Although the number of functional die increases further to accommodate package functionality, the overall package dimensions have not increased, they have stayed the same or decreased. Recently, Samsung announce a 16 die stacked device. In order to keep the same package height, alternate stacking structures need to be investigated. One suck opportunity is spacerless die stacking architecture. Using dummy silicon spacers add cost to a package and do not increase the memory of functionality. …

Go to article

The Lattice Boltzmann Method For Computational Fluid Dynamics Applications, Chinmay Adhvaryu

Mechanical and Aerospace Engineering Theses - Archive

An analysis of lattice Boltzmann method is presented in this thesis. This analysis contrast with the traditional lattice Boltzmann work, where complex fluids are considered with extended properties. Focus of the current thesis is on the validation and use of lattice Boltzmann method for traditional fluid dynamics. In first part of the document a historical and theoretical background of lattice Boltzmann method is presented. In this part some conclusions are drawn about the stability and other physical characteristics of the lattice Boltzmann method. Second part deals with the computer implementation of the LBM. It also discusses some aspect about practical …

Go to article

The Development Of A Finite Element Tool For The Calculation Of Beam Cross Section Properties, Bryan Dale Mixon

Mechanical and Aerospace Engineering Theses - Archive

Cross section properties are crucial in the analysis and design of beams as they play a key role in the determination of the stress state encountered. The development of an FEM tool in MATLAB for the calculation of beam cross section properties will be discussed. Properties of interest include general cross section properties as well as the non-trivial warping-dependent properties for both the unrestrained and restrained cross section conditions for solid and hollow, open and closed sections.

Go to article

Flip Chip Back End Design Parameters To Reduce Bump Electromigration, Vishal Nagaraj

Mechanical and Aerospace Engineering Theses - Archive

The advancement in flip chip technology has enabled us to meet the requirement of smaller die size along with the increased functionality. Due to this development in flip chip packaging technology along with higher current carrying requirement of solder bumps, electromigration has now become a reliability concern. In this research, a commercially available finite element tool is adopted in order to study the distribution of current density in eutectic solder bump for variety of back end design parameters. Geometries needed were generated by using Pro/Engineer® Wildfire 3.0 as a Computer-Aided-Design (CAD) tool and were transferred to ANSYS® 10.0, where meshed …

Go to article

Development Of A Freeway Incident Rating System, Jose Javier Lopez

Civil Engineering Theses - Archive

A freeway incident rating system is proposed to classify incidents in terms of their disruptive potential to cause delays, fuel wastage, secondary accidents, and other adverse operational impacts. A two-dimensional rating scale is used which classifies incidents in terms of their severity and the number of agencies required to respond and clear incidents. Variables used in characterizing the severity include number of vehicles involved, number of lanes and shoulders blocked, time of incident occurrence, duration of incident until full clearance, and weather conditions at the time of the incident. The objective behind the development of such a rating system is …

Go to article

Targeted Drug Delivery To Human Aortic Smooth Muscle Cells Using Biodegradable Nanoparticles, Danyel Specht

Bioengineering Theses - Archive

Restenosis is a common problem that can occur in angioplasty patients. In order to reduce the restentosis rate, various treatments such as glucocorticoids and drug eluting stents have been used for angioplasty patients. However, their limitations include the inefficient delivery of drugs to inhibit smooth muscle cell proliferation, a major cause of restenosis. Therefore, we propose the use of biodegradable nanoparticles as a drug delivery system for transporting a therapeutic agent to human aortic smooth muscle cells (HASMC) to prevent their proliferation. In this study the glucocorticoid dexamethasone (DEX) was chosen as the therapeutic agent. A biodegradable polymer, poly (D,Llactide-co-glycolide) …

Go to article

Subcellular Light Activation, Control And Manipulation Using A Dynamically Reconfigurable Nanopatterning System, Amruta Rajiv Joshi

Bioengineering Theses - Archive

Cellular communication is the basis of all cellular activities and functions. Cell signaling is crucial in the processes of tissue maintenance, tissue development and homeostasis. Errors in transmission or interpretation of these signals can result in the onset of diseases like cancer. Efforts have been made to probe into the communication between cells, and the extracellular signals that cells transmit to each other. There is however, a necessity to understand cell communication within the cellular components themselves and to be able to perform a nanoscale analysis of the cell organelle behavior. Many cellular mechanisms involve processes at the subcellular level, …

Go to article

Microfluidic Flow Cytometer For High Throughput Label Free Cell Analysis, Sajal Chirvi

Bioengineering Theses - Archive

Microfluidic flow cytometer for high throughput label free cell analysis is proposed. Detection of cell morphology plays an important role in determination of state of health and diagnosis of many diseases such as sickle cell anemia, cancer, urine analysis, blood analysis etc. The platform proposed integrates label free cell analysis, microfluidic platform and high throughput imaging. Label free analysis helps in analyzing cells without altering cell/protein of interest and also allows biophysical characterization of living cells. Microfluidic platform used is fabricated from soft lithography. It mimics biological environment due to its channel confinement and is biocompatible. Being optically clear (PDMS), …

Go to article

Cytotoxicity Evaluation Of Temperature Sensitive Poly(N-Isopropylacrylamide) Nanoparticles For Drug Delivery, Aniket Sharadrao Wadajkar

Bioengineering Theses - Archive

The objective of this research project was to develop temperature sensitive poly(N-isopropylacrylamide) (PNIPA) nanoparticles for drug delivery applications. These nanoparticles were formulated by a radical polymerization method, and their toxicity was studied in vitro using MTS assays and various cell types such as fibroblasts, smooth muscle cells, and endothelial cells. Cytotoxicity results did not show a significant difference in cell survival when cells were exposed to different particle sizes (100, 300, and 500 nm). In addition, dose studies of 100 nm nanoparticles showed that the cells exposed to PNIPA nanoparticles at concentrations less than or equal to 5 mg/ml were …

Go to article

Studies On Volume Change Movements In High Pi Clays For Better Design Of Low Volume Pavements, Thammanoon Manosuthikij

Civil Engineering Dissertations - Archive

Numerous low- to medium-volume roads such as Farm Market (FM) roads constructed on expansive clay subgrades, especially in the eastern and central Texas, encounter severe pavement cracking and premature loss of serviceability. The maintenance costs, in some cases, are greater than the initial construction costs. The roads built on problematic expansive soils often become distressed due to volume changes associated with seasonal moisture content fluctuations. This dissertation research was attempted to evaluate models that predict volume changes movements of the expansive or highly plastic soils and also develop new models that could provide better prediction of volume change movements in …

Go to article

Building Pressure Tests Of Fiber-Reinforced Foam-Based Lightweight Concrete Precast Wall Panels, Francheska Enid Seijo

Civil Engineering Theses - Archive

Instrumentation and procedures for building pressure tests were designed as a means of providing new wind pressure test methods for full-scale building models. Fiber-reinforced foam-based lightweight concrete precast wall panels were studied in this investigation. Three (3) full-scale prototype buildings were tested for this purpose. To determine the material properties and design parameters for this targeted 90 pcf (1,446 kg/m3) cellular lightweight concrete and to gain overall knowledge of its behavior, some tests such as compressive strength test, pull-out strength test, and flexural strength test were performed. The wind pressure tests performed provided results for strength, maximum wind pressure the …

Go to article

Micromachined Nanoporous Membranes For Blood Oxygenation Systems, Vijayakrishnan Ambravaneswaran

Electrical Engineering Theses - Archive

An oxygenator is a medical device that aids in the exchange of oxygen and carbon dioxide in the human blood during procedures and illnesses that may cause the interruption or cessation of blood flow in the body. Porous membranes currently used in blood-oxygenation systems are bulky, and the pores are relatively large in dimension. The control over the pore size is poor due to the fabrication techniques used. The standard deviation of the pore size and the placement of the pores deteriorate even further with decreasing pore diameter. It is because of inaccurate pore placement and poor control over the …

Go to article

Improved Design Of A Piecewise Linear Network, Sayantani Pal

Electrical Engineering Theses - Archive

An efficient design of the Piecewise Linear Network (PLN) which maps the N dimensional input vector space into an M dimensional output vector space is presented. Several clusters are formed in the given datasets and a linear mapping is fitted for each cluster using regression and the total mapping error is calculated. We have designed this network using Self Organizing Map (SOM) clustering which uses the Euclidean distance measure. Again the same has been designed by using various weighted distance measures whose results are compared. It is observed that there is a decrease in Mean Square Error (MSE) of the …

Go to article

Study Of Patch Antennas For Strain Measurement, Uday Shankar Tata

Electrical Engineering Theses - Archive

Reliable strain measurement is important for damage detection of mechanical and civil structures. Existing wireless strain sensing technologies require a high operating voltage, bulky signal conditioning systems, and an external wireless module to transmit the sensor output. These limitations make the strain monitoring unreliable and expensive. An innovative method of measuring strain using a patch antenna is investigated in this thesis to overcome the limitations of existing strain sensing technologies. The patch antenna is made of a thin sheet of low-loss insulating material, called the dielectric substrate. The antenna pattern, i.e. a metallic patch, is printed on one side of …

Go to article

Error Correction Methods For Latency-Constrained Flash Memory Systems, Priyanka Ankolekar

Electrical Engineering Theses - Archive

Maintaining the reliability of data stored in Flash devices and reading it correctly has become a challenge as the demand for higher density is forcing aggressive shrinking of Flash architectures. For all Flash systems, especially latency-constrained NOR Flash, an on-chip error correction code (ECC) is the only viable and robust solution to this problem. This thesis investigates and optimizes low-latency error correction schemes for on-chip implementation in NOR systems using existing error correction methods as a starting point. As the first step towards doing this, a mathematical relation has been derived to compute the bit error rate (BER) of a …

Go to article

Subcellular Structure Modeling And Tracking For Cell Dynamics Study, Quan Wen

Computer Science and Engineering Dissertations - Archive

The introduction of sensitive and fast electronic imaging devices and the development of biological methods to tag proteins of interest by green fluorescent proteins (GFP) have made a full understanding of live cell dynamics achievable. With the latest hardware technology, such as high speed laser scanning confocal Microscopy (LSCM), it has now become critical to develop automatic quantitative data analysis tools to keep pace with and to fully exploit the functionalities of state-of-the-art hardware. One task of such tools is the motility analysis of subcellular structures. This dissertation provides a series of computational approaches for studying subcellular structure motility. Firstly, …

Go to article

Full-Text Articles in Entire DC Network

Ut Arlington Library Notes, V.14, No.1, Fall 2008, University Of Texas At Arlington Library

UT Arlington Library Notes

Acknowledgements, The Mcnair Team

McNair Scholars Research Journal

Mentor Profile, The Mcnair Team

McNair Scholars Research Journal

Bringing Information Theory To Bear On Justified True Belief, Mary Stephanie Cook

McNair Scholars Research Journal

Operations-Oriented Performance Measures For Freeway Management Systems: Final Report, Robert E. Brydia, Stephen P. Mattingly, Melanie L. Sattler, Auttawit Upayokin

Civil Engineering Faculty Publications - Archive

Full Issue, The Mcnair Team

McNair Scholars Research Journal

Empirical Two-Point Α-Mixing Model For Calibrating The Ech2o Ec-5 Soil Moisture Sensor In Sands, Toshihiro Sakaki, Anuchit Limsuwat, Kathleen M. Smits, Tissa H. Illangasekare

Civil Engineering Faculty Publications - Archive

The Compass Rose Vol. Xxii, No. 2, University Of Texas At Arlington Library Special Collections & Archives

The Compass Rose

A Search For Creative Class Trail User Experiences Along The Katy Trail, Shirley Jane Mathews

Landscape Architecture Masters & Design Theses - Archive

Application Of The Historic Preservation Index Strategy To Historic Vernacular Landscape, Sonal D. Parmar

Landscape Architecture Masters & Design Theses - Archive

A Mathematical Model Development And Sensitivity Analysis Of Two Photon Polymerization For 3d Micro/Nano Fabrication, Nitin Uppal

Mechanical and Aerospace Engineering Dissertations - Archive

A Least-Squares/Galerkin Split Finite Element Method For Incompressible And Compressible Navier-Stokes Equations, Rajeev Kumar

Mechanical and Aerospace Engineering Dissertations - Archive

The Development And Testing Of Pulsed Detonation Engine Ground Demonstrators, Philip Koshy Panicker

Mechanical and Aerospace Engineering Dissertations - Archive

Design And Fabrication Of Piezoelectric Micro Generator Using Laser Micromachining And Mems Technique, Hyunuk Kim

Material Science and Engineering Theses - Archive

Analytical Thermal Model Of A Generic Multi-Layer Spacerless 3d Package, Erantha Nuwan Rodrigo

Mechanical and Aerospace Engineering Theses - Archive

The Lattice Boltzmann Method For Computational Fluid Dynamics Applications, Chinmay Adhvaryu

Mechanical and Aerospace Engineering Theses - Archive

The Development Of A Finite Element Tool For The Calculation Of Beam Cross Section Properties, Bryan Dale Mixon

Mechanical and Aerospace Engineering Theses - Archive

Flip Chip Back End Design Parameters To Reduce Bump Electromigration, Vishal Nagaraj

Mechanical and Aerospace Engineering Theses - Archive

Development Of A Freeway Incident Rating System, Jose Javier Lopez

Civil Engineering Theses - Archive

Targeted Drug Delivery To Human Aortic Smooth Muscle Cells Using Biodegradable Nanoparticles, Danyel Specht

Bioengineering Theses - Archive

Subcellular Light Activation, Control And Manipulation Using A Dynamically Reconfigurable Nanopatterning System, Amruta Rajiv Joshi

Bioengineering Theses - Archive

Microfluidic Flow Cytometer For High Throughput Label Free Cell Analysis, Sajal Chirvi

Bioengineering Theses - Archive

Cytotoxicity Evaluation Of Temperature Sensitive Poly(N-Isopropylacrylamide) Nanoparticles For Drug Delivery, Aniket Sharadrao Wadajkar

Bioengineering Theses - Archive

Studies On Volume Change Movements In High Pi Clays For Better Design Of Low Volume Pavements, Thammanoon Manosuthikij

Civil Engineering Dissertations - Archive

Building Pressure Tests Of Fiber-Reinforced Foam-Based Lightweight Concrete Precast Wall Panels, Francheska Enid Seijo

Civil Engineering Theses - Archive

Micromachined Nanoporous Membranes For Blood Oxygenation Systems, Vijayakrishnan Ambravaneswaran

Electrical Engineering Theses - Archive

Improved Design Of A Piecewise Linear Network, Sayantani Pal

Electrical Engineering Theses - Archive

Study Of Patch Antennas For Strain Measurement, Uday Shankar Tata

Electrical Engineering Theses - Archive

Error Correction Methods For Latency-Constrained Flash Memory Systems, Priyanka Ankolekar

Electrical Engineering Theses - Archive

Subcellular Structure Modeling And Tracking For Cell Dynamics Study, Quan Wen

Computer Science and Engineering Dissertations - Archive