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Temperature dependent rate coefficients for the gas-phase OH + Furan-2,5-dione (C4H2O3, maleic anhydride) reaction (open access)

Temperature dependent rate coefficients for the gas-phase OH + Furan-2,5-dione (C4H2O3, maleic anhydride) reaction

Authors of the article assert that rate coefficients, k1(T), for the gas-phase reaction of the OH radical with Furan-2,5-dione (maleic anhydride (MA), C4H2O3), a biomass burning related compound, were measured under pseudo first-order conditions in OH using the pulsed laser photolysis - laser induced fluorescence method over a range of temperature and bath gas pressure. Their results are compared with a previous room temperature relative rate study of the OH + MA reaction and significant discrepancy between the studies is discussed. This is the accepted manuscript version of the published article.
Date: May 30, 2020
Creator: Chattopadhyay, Aparajeo; Papadimitriou, Vassileios C.; Marshall, Paul & Burkholder, James B. (James Bart), 1954-
Object Type: Article
System: The UNT Digital Library
Oxidation of methylamine (open access)

Oxidation of methylamine

Article describes how a detailed chemical kinetic model for oxidation of methylamine has been developed, based on theoretical work and a critical evaluation of data from the literature. The mechanism was validated against experimental results from batch reactors, flow reactors, shock tubes, and premixed flames. This is the accepted manuscript version of the published article.
Date: August 5, 2020
Creator: Glarborg, Peter; Andreasen, Charlotte S.; Hashemi, Hamid; Qian, Rachel & Marshall, Paul
Object Type: Article
System: The UNT Digital Library

Open Science and Open Data: Issues and Considerations

Presentation describes how the open access movement is transforming scholarly communication.
Date: March 2020
Creator: Alemneh, Daniel Gelaw
Object Type: Presentation
System: The UNT Digital Library

Roles of Library for Quality Education and Research: Emerging Trends in the Information Professions

Presentation asserts that in times of information scarcity, libraries provided the most effective way of sharing material.
Date: March 12, 2020
Creator: Alemneh, Daniel Gelaw
Object Type: Presentation
System: The UNT Digital Library
Providing Open Access to Heterogeneous Information Resources without Compromising Privacy and Data Confidentiality (open access)

Providing Open Access to Heterogeneous Information Resources without Compromising Privacy and Data Confidentiality

Book chapter discussing challenges raised by concerns about ensuring long-term access to digital resources verses data confidentiality and balancing the right level of data security that addresses compliance requirements in the context of libraries and cultural heritage institutions.
Date: 2020
Creator: Alemneh, Daniel Gelaw & Helge, Kris
Object Type: Book Chapter
System: The UNT Digital Library
Report on Electronic Resources & Libraries Conference, March 8–11, 2020, Austin, Texas (open access)

Report on Electronic Resources & Libraries Conference, March 8–11, 2020, Austin, Texas

Article reporting on a selection of presentations from the 2020 Electronic Resources & Libraries Conference.
Date: September 4, 2020
Creator: Dawson, Jill
Object Type: Article
System: The UNT Digital Library

Investigating the Use of Metadata Record Graphs to Analyze Subject Headings in the Digital Public Library of America

Presentation discussing network analysis of aggregated subject values in the Digital Public Library of America (DPLA), with a discussion of how format normalization could affect subject overlap across collections.
Date: August 4, 2020
Creator: Phillips, Mark Edward & Tarver, Hannah
Object Type: Presentation
System: The UNT Digital Library
On Polish groups admitting non-essentially countable actions (open access)

On Polish groups admitting non-essentially countable actions

Article addresses the question whether every Polish group that is not locally compact admits a Borel action on a standard Borel space whose associated orbit equivalence relation is not essentially countable. The authors e answer this question positively for the class of all Polish groups that embed in the isometry group of a locally compact metric space.
Date: September 17, 2019
Creator: Kechris, Alexander S.; Malicki, Maciej; Panagiotopoulos, Aristotelis & Zielinski, Joseph
Object Type: Article
System: The UNT Digital Library
The Tourism Sector and U.S. Regional Macroeconomic Stability: A Network Approach (open access)

The Tourism Sector and U.S. Regional Macroeconomic Stability: A Network Approach

This article investigates how the structural mix of USA regional economies affects their volatility of economic growth using four exogenous sectors: Federal Government, construction, manufacturing, and tourism. Results suggest that a larger share of Federal Government employment in an economy reduces the variability of overall employment growth, while a larger share of construction activity elevates it. Results also show that recently manufacturing has not contributed as much to such variability, and that a larger tourism presence increases it. The increasing integration of technology in tourism offers significant opportunities for a network approach and innovation in regional development.
Date: September 13, 2020
Creator: Min, Jihye Ellie; Agrusa, Jerome; Lema, Joseph & Lee, Harold
Object Type: Article
System: The UNT Digital Library
The Impact of Disasters on a Heritage Tourist Destination: A Case Study of Nepal Earthquakes (open access)

The Impact of Disasters on a Heritage Tourist Destination: A Case Study of Nepal Earthquakes

Article examining the degree of macroeconomic recovery of the Nepal tourism industry after a natural disaster using the autoregressive integrated moving average model (ARIMA). The study investigated the case of Nepal’s earthquakes in 2015 and examined the impact of the earthquakes on tourism inflows and GDP using time series data from 1990 to 2018.
Date: July 29, 2020
Creator: Min, Jihye Ellie; KC, Birendra; Kim, Seungman & Lee, Jaehoon
Object Type: Article
System: The UNT Digital Library
High School Adolescents’ Physical Activity and Physical Fitness: A 3 × 2 Achievement Goal Approach (open access)

High School Adolescents’ Physical Activity and Physical Fitness: A 3 × 2 Achievement Goal Approach

Article examining the influence of six goal orientations on physical activity (PA) and physical fitness (PF) in high school students in China using the latest 3 × 2 achievement goal model. Results show fostering self- and other-approach-oriented environments with developmentally appropriate content in physical education may have implications for enhancing high school students’ PA and PF.
Date: July 27, 2020
Creator: Shen, Liang; Lee, Joonyoung; Chen, Changzhou & Zhang, Tao
Object Type: Article
System: The UNT Digital Library
Structural equation modeling of the associations between amygdala activation, personality, and internalizing, externalizing symptoms of psychopathology (open access)

Structural equation modeling of the associations between amygdala activation, personality, and internalizing, externalizing symptoms of psychopathology

Article examining how amygdala activation to facial expressions was linked with self-report of personality traits and clinical interviews of internalizing and externalizing symptoms of psychopathology. Structural equation modeling results revealed direct associations of amygdala activation with personality trait expression, as well as indirect associations (though personality) with symptoms of psychopathology.
Date: July 14, 2020
Creator: Neumann, Craig S.
Object Type: Article
System: The UNT Digital Library
Using an Adjunctive Treatment to Address Psychological Distress in a National Weight Management Program: Results of an Integrated Pilot Study (open access)

Using an Adjunctive Treatment to Address Psychological Distress in a National Weight Management Program: Results of an Integrated Pilot Study

Article examining weight loss and physical functioning of obese veterans with comorbid psychological symptoms when participating in weight management programs. The MOVE! program aims to increase healthy eating and physical activity to promote weight loss in obese veterans. Adequately addressing psychological barriers is necessary to maximize outcomes in MOVE! for veterans with PTSD, depression, and anxiety. This study examined the preliminary outcomes of administering the Healthy Emotions and Improving Health BehavioR Outcomes (HERO) intervention. HERO is adjunctive cognitive-behavioral therapy to MOVE! that addresses PTSD, depression, and anxiety symptom barriers to engagement in physical activity.
Date: July 30, 2020
Creator: Evans-Hudnall, Gina; Odafe, Mary O.; Johnson, Adrienne; Armenti, Nicholas; O'Neil, Jennifer; Lawson, Evan et al.
Object Type: Article
System: The UNT Digital Library
Protein Determination with Molecularly Imprinted Polymer Recognition Combined with Birefringence Liquid Crystal Detection (open access)

Protein Determination with Molecularly Imprinted Polymer Recognition Combined with Birefringence Liquid Crystal Detection

Article integrating a molecularly imprinted polymer (MIP) film recognition unit with a liquid crystal (LC) in an optical cell transducer to incur the selectivity of liquid crystal-based sensors.
Date: August 20, 2020
Creator: Cieplak, Maciej; Węgłowski, Rafał; Iskierko, Z.; Węgłowska, Dorota; Sharma, Piyush S.; Noworyta, Krzysztof R. et al.
Object Type: Article
System: The UNT Digital Library
A New Cable-Less Seismograph with Functions of Real-Time Data Transmitting and High-Precision Differential Self-Positioning (open access)

A New Cable-Less Seismograph with Functions of Real-Time Data Transmitting and High-Precision Differential Self-Positioning

This article developed a new cable-less seismograph system, which can transmit seismic data in real-time and automatically perform high-precision differential self-positioning. Combining the ZigBee technology with the high-precision differential positioning module, this new seismograph system utilized the wireless personal area network (WPAN) and real-time kinematic (RTK) technologies to improve its on-site performances and to make the field quality control (QC) and self-positioning possible. With the advantages of low-cost, good scalability, and good compatibility, the proposed new cable-less seismograph system can improve the field working efficiency and data processing capability. It has potential applications in noise seismology and mobile seismic monitoring.
Date: July 19, 2020
Creator: Liu, Kang; You, Qingyu; Wang, Juan; Xu, Xiqiang; Shi, Pengcheng; Dai, Kaoshan et al.
Object Type: Article
System: The UNT Digital Library
Embedded Corrosion Sensing with ZnO-PVDF Sensor Textiles (open access)

Embedded Corrosion Sensing with ZnO-PVDF Sensor Textiles

Article investigating a non-conductive sensor textile as a viable solution for corrosion in underground and submerged steel pipes. The results offer a new option for sub-surface corrosion sensing using low cost, easily fabricated sensor textiles.
Date: May 28, 2020
Creator: Chowdhury, Tonoy; D'Souza, Nandika Anne, 1967-; Ho, Yee-Hsien; Dahotre, Narendra B. & Mahbub, Ifana
Object Type: Article
System: The UNT Digital Library
Massive MIMO Systems for 5G and beyond Networks—Overview, Recent Trends, Challenges, and Future Research Direction (open access)

Massive MIMO Systems for 5G and beyond Networks—Overview, Recent Trends, Challenges, and Future Research Direction

This article presents a comprehensive overview of the key enabling technologies required for 5G and 6G networks, highlighting the massive MIMO systems. The authors discuss the fundamental challenges related to pilot contamination, channel estimation, precoding, user scheduling, energy efficiency, and signal detection in massive MIMO systems and discuss state-of-the-art mitigation techniques. Recent trends such as terahertz communication, ultra massive MIMO (UM-MIMO), visible light communication (VLC), machine learning, and deep learning for massive MIMO systems are outlined. Finally, future research for massive MIMO systems for 5G and beyond is discussed.
Date: May 12, 2020
Creator: Chataut, Robin & Akl, Robert G.
Object Type: Article
System: The UNT Digital Library
Prolate and oblate chiral liquid crystal spheroids (open access)

Prolate and oblate chiral liquid crystal spheroids

Article examining the palette of morphologies that arises when microdroplets are deformed into nonspherical shapes in a controllable manner. Specifically, geometrical confinement and mechanical strain are used to manipulate orientational order, phase transitions, and topological defects that arise in chiral liquid crystal droplets. The reported structures and assemblies offer potential for applications in smart coatings, smart fabrics, and wearable sensors.
Date: July 10, 2020
Creator: Sadati, Monirosadat; Martínez-González, José A.; Zhou, Ye; Qazvini, Nader Taheri; Kurtenbach, Khia; Li, Xiao et al.
Object Type: Article
System: The UNT Digital Library
Long-range nonspreading propagation of sound beam through periodic layered structure (open access)

Long-range nonspreading propagation of sound beam through periodic layered structure

Article analyzing dispersion of sound in a solid-fluid layered structure and found a flex point on the isofrequency curve where D vanishes for given direction of propagation and frequency. Nonspreading propagation is experimentally observed in a water steel lattice of 75 periods (~1 meter long) and occurs in the regime of anomalous dispersion and strong acoustic anisotropy when the effective mass along periodicity is close to zero. Under these conditions the incoming beam experiences negative refraction of phase velocity leading to backward wave propagation. The observed effect is explained using a complete set of dynamical equations and our effective medium theory.
Date: September 2, 2020
Creator: Zubov, Yurii; Djafari-Rouhani, Bahram; Jin, Yuqi; Sofield, Mathew; Walker, Ezekiel; Neogi, Arup et al.
Object Type: Article
System: The UNT Digital Library
Correlating work hardening with co-activation of stacking fault strengthening and transformation in a high entropy alloy using in-situ neutron diffraction (open access)

Correlating work hardening with co-activation of stacking fault strengthening and transformation in a high entropy alloy using in-situ neutron diffraction

Article using in-situ neutron diffraction to correlate SF strengthening to work hardening behavior in a low SFE Fe40Mn20Cr15Co20Si5 (at%) high entropy alloy, SFE ~ 6.31 mJ m−2. Cooperative activation of multiple mechanisms was indicated by increases in SF strengthening and γ-f.c.c. → ε-h.c.p. transformation leading to a simultaneous increase in strength and ductility. The present study demonstrates the application of in-situ, neutron or X-ray, diffraction techniques to correlating SF strengthening to work hardening.
Date: December 17, 2020
Creator: Frank, M.; Nene, Saurabh S.; Chen, Y.; Gwalani, B.; Kautz, E. J.; Devaraj, A. et al.
Object Type: Article
System: The UNT Digital Library
Computational modeling of human reasoning processes for interpretable visual knowledge: a case study with radiographers (open access)

Computational modeling of human reasoning processes for interpretable visual knowledge: a case study with radiographers

Article proposing a computational method to quantify and dissect visual reasoning. The method characterizes spatial and temporal features and identifies common and contrast visual reasoning patterns to extract significant gaze activities. The visual reasoning patterns are explainable and can be compared among different groups to discover strategy differences. Empirical observations show that the method can capture the temporal and spatial features of human visual attention and distinguish expertise level. By revealing task-related reasoning processes, this method demonstrates potential for explaining human visual understanding.
Date: December 10, 2020
Creator: Li, Yuan; Cao, Hongfei; Allen, Carla M.; Wang, Xin; Erdelez, Sanda & Shyu, Chi-Ren
Object Type: Article
System: The UNT Digital Library
RNaseH-mediated simultaneous piggyback knockdown of multiple genes in adult zebrafish (open access)

RNaseH-mediated simultaneous piggyback knockdown of multiple genes in adult zebrafish

This article tests if it is possible to piggyback more than one antisense deoxyoligonucleotide (dO) with one vivo morpholino (VMO). The authors previously developed a piggyback knockdown method that was used to knockdown genes in adult zebrafish. In this article, the authors develop a method to knockdown three genes at one time, and by increasing the concentration of VMO by twofold, could knockdown six genes simultaneously. These multiple gene knockdowns will not only increase the efficiency of the method in whole genome-wide knockdowns but will also be useful to study multifactorial disorders.
Date: November 19, 2020
Creator: Raman, Revathi; Ryon, Mia & Jagadeeswaran, Pudur
Object Type: Article
System: The UNT Digital Library
Anisotropic optical properties of single Si2Te3 nanoplates (open access)

Anisotropic optical properties of single Si2Te3 nanoplates

Article reporting a combined experimental and computational study of the optical properties of individual silicon telluride (Si2Te3) nanoplates.
Date: November 5, 2020
Creator: Chen, Jiyang; Bhattarai, Romakanta; Cui, Jingbiao; Shen, Xiao & Hoang, Thang
Object Type: Article
System: The UNT Digital Library
Urban and air pollution: a multi-city study of long-term effects of urban landscape patterns on air quality trends (open access)

Urban and air pollution: a multi-city study of long-term effects of urban landscape patterns on air quality trends

This article identifies the key urban form determinants of decadal-long fine particulate matter (PM2.5) trends in all 626 Chinese cities at the county level and above. As the first study of its kind, this study comprehensively examines the urban form effects on air quality in cities of different population sizes, at different development levels, and in different spatial-autocorrelation positions.
Date: October 29, 2020
Creator: Liang, Lu & Gong, Peng
Object Type: Article
System: The UNT Digital Library