UNT College of Engineering - 49 Matching Results
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- FlexiChain 3.0: Distributed Ledger Technology-Based Intelligent Transportation for Vehicular Digital Asset Exchange in Smart Cities
- Article describes how, due to the enormous amounts of data being generated between users, Intelligent Transportation Systems (ITS) are complex Cyber-Physical Systems that necessitate a reliable and safe infrastructure. In this work, the authors explore Distributed Ledger Technology (DLT) and collect data about consensus algorithms and their applicability to be used in the IoV as the backbone of ITS.
- Room and Elevated Temperature Sliding Friction and Wear Behavior of Al0.3CoFeCrNi and Al0.3CuFeCrNi2 High Entropy Alloys
- Article discusses how, in this study, processing–structure–property relations were systematically investigated at room and elevated temperatures for two FCC Al0.3CoFeCrNi and Al0.3CuFeCrNi2 high-entropy alloys (HEAs), also known as complex concentrated alloys (CCAs), prepared by conventional arc-melting. It was determined that both alloys exhibit FCC single-phase solid solution structure. Micro-indentation and sliding wear tests were performed to study the hardness and tribological behavior and mechanisms at room and elevated temperatures.
- A Review of Rehabilitative and Assistive Technologies for Upper-Body Exoskeletal Devices
- Authors state that this journal review article focuses on the use of assistive and rehabilitative exoskeletons as a new opportunity for individuals with diminished mobility. Overall, this article serves as a valuable resource for individuals working in the field of assistive and rehabilitative exoskeletons, providing insight into the state of the art and potential areas for improvement.
- Tuning the temperature range of superelastic Ni-Ti alloys for elastocaloric cooling via thermal processing
- Article describes how caloric cooling enlisting solid-state refrigerants is potentially a promising eco-friendly alternative to conventional cooling based on vapor compression. Here, the authors have explored tuning the operation temperature range of Ni50.8Ti49.2 for elastocaloric cooling. In particular, they have studied the effect of thermal treatments (a.k.a. aging) on the transformation temperature, superelasticity, and elastocaloric effects of Ni50.8Ti49.2 shape memory alloy tubes.
- Mapping hierarchical and heterogeneous micromechanics of a transformative high entropy alloy by nanoindentation and machine learning augmented clustering
- Article describes how conventional macromechanical tests provide limited insights into complex hierarchical deformation behavior of a transformative high entropy alloy (HEA). In this work, a high throughput microstructure-micromechanical correlative study is presented by combining high-resolution nanoindentation, site-specific microscopy, and Gaussian mixture model (GMM) clustering.
- Work hardening in metastable high entropy alloys: a modified five-parameter model
- Article models work hardening response in TRIP HEAs under tensile deformation, which reflects the hardening due to synergistic activity of multiple deformation mechanisms, using a five-parameter work hardening model.
- Nanocrown electrodes for parallel and robust intracellular recording of cardiomyocytes
- Article develops vertically-aligned nanocrown electrodes that are mechanically robust and achieve > 99% success rates in obtaining intracellular access through electroporation. This technology development provides an advancement towards establishing an iAP screening assay for preclinical evaluation of drug-induced arrhythmogenicity.
- Surface degradation mechanisms in a eutectic high entropy alloy at microstructural length-scales and correlation with phase-specific work function
- Article evaluating wear and corrosion behavior for the AlCoCrFeNi2.1 eutectic high entropy alloy consisting of BCC (B2), and FCC (L12) lamellae.
- Physical and optical properties of the International Simple Glass
- This article presents physical property data (both published and previously unpublished) on a single batch of International Simple Glass (ISG), which was cast into individual ingots that were distributed to the collaborators. Properties from the atomic scale to the macroscale, including composition and elemental impurities, phase purity, density, thermal properties, mechanical properties, optical and vibrational properties, and the results of molecular dynamics simulations are presented, as well as information on the surface composition and morphology after polishing. Although the existing literature on the alteration of ISG is not extensively reviewed here, the results of well-controlled static alteration experiments are presented here as a point of reference for other performance investigations.
- Fabric Defect Detection Using Activation Layer Embedded Convolutional Neural Network
- This article develops a deep-learning algorithm for an on-loom fabric defect inspection system by combining the techniques of image pre-processing, fabric motif determination, candidate defect map generation, and convolutional neural networks (CNNs).
- Bayesian analysis of complex mutations in HBV, HCV, and HIV studies
- This article provides a review of the Bayesian-inference-based methods applied to Hepatitis B Virus (HBV), Hepatitis C Virus (HCV), and Human Immunodeficiency Virus (HIV) studies with a focus on the detection of the viral mutations and various problems which are correlated to these mutations. The authors also provide a summary of the Bayesian methods' applications toward these viruses' studies, where several important and useful results have been discovered.
- BAM: A Block-Based Bayesian Method for Detecting Genome-Wide Associations with Multiple Diseases
- Article proposes a novel Bayesian method, named BAM, for simultaneously partitioning Single Nucleotide Polymorphisms (SNPs) into Linkage Disequilibrium(LD)-blocks and detecting genome-wide multi-locus epistatic interactions that are associated with multiple diseases. Experimental results on the simulated datasets demonstrate that BAM is powerful and efficient.
- Toward Next-Generation Robust Cryptosystems
- Accepted Manuscript version of an article that presents thoughts on paradigm-shift next generation cryptosystems to overcome the vulnerabilities of the omnipresent conventional cryptosystems.
- Growth Mechanisms of Nano-to Micro-Sized Lead Sulfate Particles
- This article aims to determine the nucleation and growth mechanisms of PbSO4 nanoparticles in various solutions to potentially reduce or control the buildup of PbSO4 on battery electrodes over time.
- Engineering the Uniform Lying Helical Structure in Chiral Nematic Liquid Crystals: From Morphology Transition to Dimension Control
- This article varies the surface anchoring strength and achieves a uniform lying helical structure with long-range order as thermodynamically stable state without any external support in Chiral nematic liquid crystals (CLCs).
- Branching of Titanium Nanorods
- This article reports that Ti nanorod branching occurs at a low homologous temperature of 0.28 based on physical vapor deposition and characterizations using electron microscopy and X-ray diffraction. The insight into conditions for branching, together with the determination of the morphology and crystal orientation of the branches, lay the foundation for further studies of branching mechanisms and driving force.
- Action unit classification for facial expression recognition using active learning and SVM
- Article utilizing active learning and support vector machine (SVM) algorithms to classify facial action units (AU) for human facial expression recognition. Experimental results show that the proposed algorithm can effectively suppress correlated noise and achieve higher recognition rates than principal component analysis and a human observer on seven different facial expressions.
- Ion-exchange mechanisms and interfacial reaction kinetics during aqueous corrosion of sodium silicate glasses
- Article on the ion-exchange and associated interfacial reaction mechanisms of silicate glasses. This work reports findings that shed light on the complex ion-exchange mechanisms during glass hydration and enables more detailed understanding of the corrosion and glass-water interactions of silicate glasses which has the potential to impact both science and technology.
- Macroscale Superlubricity Accomplished by Sb2O3-MSH/C Under High Temperature
- Article reporting the high-temperature superlubricity phenomenon accomplished in coatings produced by burnishing powders of antimony trioxide (Sb₂O₃) and magnesium silicate hydroxide coated with carbon (MSH/C) onto the nickel superalloy substrate.
- Composition-dependent apparent activation-energy and sluggish grain-growth in high entropy alloys
- Article discusses experimental results which reveal that the apparent activation-energy for grain-growth in an fcc-based AlxCoCrFeNi high entropy alloy (HEA) system increases from 179 to 486 kJ/mol when the Al content increases from x = 0.1 to 0.3.
- Nanoindentation behavior of high entropy alloys with transformation-induced plasticity
- Article describes an experiment where nanoindentation of three metastable dual-phase high entropy alloys (HEAs) was performed to obtain their inherent elastoplastic deformation responses.
- Dynamic Shear Deformation of a Precipitation Hardened Al0.7CoCrFeNi Eutectic High-Entropy Alloy Using Hat-Shaped Specimen Geometry
- The article reports on the shear deformation of a eutectic structured HEA and effect of precipitation on shear deformation, particularly Al₀.₇CoCrFeNi high-entropy alloy (HEA). A split-Hopkinson pressure bar (SHPB) was used to compress the hat-shaped specimens to study the local dynamic shear response of the alloy. The change in the width of shear bands with respect to precipitation and deformation rates was studied. The precipitation of L1₂ phase did not delay the formation of adiabatic shear bands (ASB) or affect the ASB width significantly, however, the deformed region around ASB, consisting of high density of twins in fcc phase, was reduced from 80 µm to 20 µm in the stronger precipitation strengthened condition.
- Modeling and Characterization of Scaling Factor of Flexible Spiral Coils for Wirelessly Powered Wearable Sensors
- This article presents the design, modeling, and experimental characterization of flexible square-shaped spiral coils with different scaling factors for WPT systems. The effects of coil scaling factor on inductance, capacitance, resistance, and the quality factor (Q-factor) are modeled, simulated, and experimentally validated for the case of flexible planar coils. This article also presents the effect of skin contact with the flexible coil in terms of the power transfer efficiency (PTE) to validate the suitability as a wearable sensor.
- Influence of ordered L1₂ precipitation on strain-rate dependent mechanical behavior in a eutectic high entropy alloy
- This article focuses on Al0.7CoCrFeNi, a lamellar dual-phase (fcc + B2) precipitation-strengthenable eutectic high entropy alloy. The back-stresses from the coherent L12 precipitate were insufficient to cause improvement in twin nucleation, owing to elevated twinning stress under quasi-static testing. However, under dynamic testing high density of twins were observed.
- Design Concepts of Polycarbonate-Based Intervertebral Lumbar Cages: Finite Element Analysis and Compression Testing
- This article explores the viability of 3D printed intervertebral lumbar cages based on biocompatible polycarbonate (PC-ISO® material).
- Decellularization Strategies for Regenerative Medicine: From Processing Techniques to Applications
- This review compares the advantages and disadvantages of decellularization methods in terms of their ability to retain desired extracellular matrix characteristics for particular tissues and organs.
- Synthesis and Ionic Conductivity of Siloxane Based Polymer Electrolytes With Pendant Propyl Acetoacetate Groups
- This paper discusses decision to develop solid polyelectrolyte membrances on the basis of new siloxane matrices.
- Effect of Length, Diameter, Chirality, Deformation, and Strain on Contact Thermal Conductance Between Single-Wall Carbon Nanotubes
- This article explores the role of various geometrical and structural (length, diameter, chirality) as well as external (deformation and strain) carbon nanotube (CNT) parameters to estimate total as well as area-normalized thermal conductance across cross-contact interconnects.
- Effect of Substrate Support on Dynamic Graphene/Metal Electrical Contacts
- This article investigates the stability of dynamic electrical contacts at a graphene/metal interface using atomic force microscopy (AFM), under static conditions with variable normal loads and under sliding conditions with variable speeds.
- Experimental Investigation and Design Method for the Shear Strength of Self-Piercing Rivet Connections in Thin-Walled Steel Structures
- This article presents an experimental investigation on the shear strength of self-piercing rivet connections used in thin-walled steel structures.
- Optical method for distance and displacement measurements of the probe-sample separation in a scanning near-field optical microscope
- This article presents an alternative optical method to determine the probe-sample separation distance in a scanning near-field optical microscope.
- Evaluation of Superficial and Dimensional Quality Features in Metallic Micro-Channels Manufactured by Micro-End-Milling
- This article focuses on a set of experiments in the micro-milling of channels made of aluminum, titanium alloys and stainless steel.
- If No Media Were Allowed inside the Venue, Was Anybody Allowed?
- This paper presents a framework to understand negation in positive terms.
- Analyzing the Effectiveness of Microlubrication Using a Vegetable Oil-Based Metal Working Fluid during End Milling AISI 1018 Steel
- This article describes a study in which a vegetable oil-based lubricant was used to conduct wear analysis and to analyze the effectiveness of microlubrication during end milling AISI 1018 steel.
- Slurry Erosion of Thermal Spray Coatings: Effect of Sand Concentration
- This paper from the Malaysian International Tribology Conference 2013 conference proceedings discusses using Ni based thermal spray coatings deposited on a commonly used hydroturbine steel.
- Review of biomechanical studies of arteries and their effect on stent performance
- This article aims to summarize part of the available literature that reports studies on biomechanical environment in healthy and diseased arteries using various analytical methods.
- Evaluation of Anthropogenic Air Emissions from Marine Engines in a Coastal Urban Airshed of Texas
- This article provides a brief description of the adopted methodology for estimating anthropogenic emission estimation of ocean going vessels and barges.
- Proyecto PAN-EARTH Estudio de Caso Venezuela: Informe de Actividades Octubre 1988 - Marzo 1990
- This is the activity report for the PAN-EARTH Project Case Study Venezuela from October 1988 to March 1990.
- PAN-EARTH/CEACT International Workshop on Climate Variability and Climate Change in Venezuela and the Caribbean Region
- Report on an international workshop on climate variability and climate change in Venezuela and the Caribbean region.
- Apparatus and Method for Transmitting Secure and/or Copyrighted Digital Video Broadcasting Data over Internet Protocol Network
- Patent relating to an apparatus and method for transmitting secure and/or copyrighted digital video broadcasting data over internet protocol network.
- Architecture Support for 3D Obfuscation
- Article discussing research on architecture support for 3D obfuscation.
- WiFi and WCDMA Network Design
- This presentation discusses WiFi access point selection and traffic balancing, multi-cell wideband code division multiple access (WCDMA) with multiple classes, user modeling using 2D Gaussian distribution, and intra-cell and inter-cell interference and capacity.
- Cell Design to Maximize Capacity in CDMA Networks
- This presentation discusses the code division multiple access (CDMA) inter-cell effects, capacity regions, maximizing network capacity, mobility, a call admission control algorithm, and network performance.
- Toward Communicating Simple Sentences Using Pictorial Representations
- This article discusses communicating simple sentences using pictorial representations.
- Using Wikipedia for Automatic Word Sense Disambiguation
- This paper describes a method for generating sense-tagged data using Wikipedia as a source of sense annotations. Through word sense disambiguation experiments, the authors show that the Wikipedia-based sense annotations are reliable and can be used to construct accurate sense classifiers.
- Creating Large Annotated Data Collections with Web Users' Help
- This paper discusses creating annotated data collections.
- Indoor Propagation Modeling at 2.4 GHZ for IEEE 802.11 Networks
- This paper discusses indoor propagation modeling.
- Performance Enhancement by Eliminating Redundant Function Execution
- This paper discusses performance enhancement by eliminating redundant function execution.
- A Non-Preemptive Scheduling Algorithm for Soft Real-Time Systems
- This article discusses a non-preemptive scheduling algorithm for soft real-time systems.