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Opportunities and Issues in the Application of Titanium Alloys for Aerospace Components
This article describes recent developments, issues, and opportunities associated with the production and use of Ti and its alloys in aerospace components. Included are new Ti alloys, new applications of Ti alloys, and the current status of several manufacturing processes including a discussion of the promise and current reality of additive manufacturing as a potentially revolutionary method of producing Ti alloy components.
Date:
May 7, 2020
Creator:
Williams, James C. & Boyer, Rodney R.
System:
The UNT Digital Library
Conversations and Medical News Frames on Twitter: Infodemiological Study on COVID-19 in South Korea
This article investigates information transmission networks and news-sharing behaviors regarding COVID-19 on Twitter in Korea. The real time aggregation of social media data can serve as a starting point for designing strategic messages for health campaigns and establishing an effective communication system during this outbreak.
Date:
May 5, 2020
Creator:
Park, Han Woo; Park, Sejung & Chong, Miyoung
System:
The UNT Digital Library
Climate Metrics for C1–C4 Hydrofluorocarbons (HFCs)
This article looks at hydrofluorocarbons (HFCs) which are potent greenhouse gases that are potential substitutes for ozone depleting substances. The Kigali amendment lists 17 HFCs that are currently in commercial use to be regulated under the Montreal Protocol. Future commercial applications may explore the use of other HFCs, most of which currently lack an evaluation of their climate metrics. In this work, atmospheric lifetimes, radiative efficiencies (REs), global warming potentials (GWPs), and global temperature change potentials (GTPs) for all saturated HFCs with fewer than 5 carbon atoms are estimated to help guide future usage and policy decisions.
Date:
May 11, 2020
Creator:
Burkholder, James B. (James Bart), 1954-; Marshall, Paul; Bera, Partha P.; Francisco, Joseph S. & Lee, Timothy J.
System:
The UNT Digital Library
How Do Chinese International Students View Seeking Mental Health Services?
This article is a study exploring how Chinese international students view seeking mental health services.
Date:
May 15, 2020
Creator:
Chen, Huan; Akpanudo, Usenime & Hasler, Erin
System:
The UNT Digital Library
An Experiment-Based Review of Low-Light Image Enhancement Methods
Article reviews the current techniques of low-light image enhancement.
Date:
May 6, 2020
Creator:
Yuan, Xiaohui; Wang, Wencheng; Wu, Xiaojin & Guo, Zairui
System:
The UNT Digital Library
Convolutional Neural Network for Extracting 3D Point Clouds of Fibrous Web From Multi-Focus Images
Article presents a new method for extracting 3D point clouds from multi-focus images of a fibrous web acquired on an optical microscope to analyze microscopic structures of a fibrous web.
Date:
May 11, 2020
Creator:
Hou, Jue; Ouyang, Wenbin; Xu, Bugao & Wang, Rongwu
System:
The UNT Digital Library
International Journal of Lightweight Materials and Manufacture
This article employs a recently introduced magnesium-samarium oxide (Mg–Sm₂O₃) nanocomposite, with different volume fractions of nanosize Sm₂O₃ particles as reinforcement, to study ambient temperature rate-dependent plastic response of the material.
Date:
May 11, 2020
Creator:
Hasannaeimi, Vahid; Mukherjee, Sundeep; Haghshenas, M.; Song, X. & Gupta, D.
System:
The UNT Digital Library
The Increase in Oxygen Demand During Severe Intensity Exercise Must be Included in Calculation of Oxygen Deficit
Article investigates the assumption that the oxygen demand remains constant throughout a bout of exercise.
Date:
May 2020
Creator:
Riojas, Andrea E.; Valenzuela, Jose R.; McFarlin, Brian K.; Vingren, Jakob L. & Hill, David W.
System:
The UNT Digital Library
Land Use Simulation of Guangzhou Based on Nighttime Light Data and Planning Policies
This article employs nighttime light (NTL) information as a proxy indicator of gross domestic product(GDP), and a future land use simulation model (FLUS) to simulate the land use patterns in Guangzhou from 2015 to 2018 and 2018 to 2035 by incorporating planning policies. This study demonstrates that NTL is a suitable and feasible proxy indicator of GDP for the land use simulations, providing a scientific basis for the development of urban planning and construction policy.
Date:
May 23, 2020
Creator:
Lao, Jieying; Wang, Cheng; Wang, Jinliang; Pan, Feifei; Xi, Xiaohuan & Liang, Lei
System:
The UNT Digital Library
WikiPossessions: Possession Timeline Generation as an Evaluation Benchmark for Machine Reading Comprehension of Long Texts
Article presents WikiPossessions, a new benchmark corpus for the task of temporally-oriented possession (TOP), or tracking objects as they change hands over time. In addition to the corpus, the authors release evaluation scripts and a baseline model for the task.
Date:
May 2020
Creator:
Blanco, Eduardo; Palmer, Alexis & Chinnappa, Dhivya
System:
The UNT Digital Library
ALMA Observations of Quasar Host Galaxies at z ≃ 4.8
Article presents ALMA Band 7 data of the [C ıı] 𝜆157.74 𝜇m emission line and underlying far-IR (FIR) continuum for 12 luminous quasars at 𝓏 ≃ 4.8 powered by fast-growing supermassive black holes (SMBHs).
Date:
May 27, 2020
Creator:
Shemmer, Ohad; Nguyen, Nathen H.; Lira, Paulina; Trakhtenbrot, Benny; Netzer, Hagai; Cicone, Claudia et al.
System:
The UNT Digital Library
On the standard L-function for GSp2n × GL1 and algebraicity of symmetric fourth L-values for GL2
This article proves an explicit integral representation—involving the pullback of a suitable Siegel Eisenstein series—for the twisted standard L-function associated to a holomorphic vector-valued Siegel cusp form of degree n and arbitrary level.
Date:
May 6, 2020
Creator:
Pitale, Ameya; Saha, Abhishek & Schmidt, Ralf
System:
The UNT Digital Library
Deep Minima in the Triply Differential Cross Section for Ionization of Atomic Hydrogen by Electron and Positron Impact
Article investigating ionization of atomic hydrogen by electron- and positron-impact. This article belongs to the Special Issue: Interactions of Positrons with Matter and Radiation.
Date:
May 29, 2020
Creator:
DeMars, C. M.; Ward, S. J.; Colgan, J.; Amami, S. & Madison, D. H.
System:
The UNT Digital Library
Electrocatalytic proton-reduction behaviour of telluride-capped triiron clusters: tuning of overpotentials and stabilization of redox states relative to lighter chalcogenide analogues
Article investigating the utility of the non-biological element tellurium as a replacement for the widely biologically-utilized lighter chalcogenides sulfur and selenium in the realm of proton-reduction catalysis.
Date:
May 14, 2020
Creator:
Hrovat, David A.; Richmond, Michael G.; Rahaman, Ahibur; Lisensky, George C.; Browder-Long, Jess; Nordlander, Ebbe et al.
System:
The UNT Digital Library
People of Color, People of Faith: The Effect of Social Capital and Religion on the Political Participation of Marginalized Communities
Article exploring how religion, social capital, and nativity intersect in the political mobilization of racial minorities. Collaborative Multiracial Post-Election Survey (CMPS) 2016 data is used to examine the connection between social capital, religion, and political behavior in a novel attempt to systematically identify the unique role of churches in the mobilization of racial minority communities.
Date:
May 19, 2020
Creator:
Huckle, Kiku & Silva, Andrea
System:
The UNT Digital Library
A Comparative Study of Water Indices and Image Classification Algorithms for Mapping Inland Surface Water Bodies Using Landsat Imagery
This article presents a comparative study of water indices and image classification algorithms for mapping inland water bodies using Landsat imagery through obtaining 24 high-resolution (≤5 m) and cloud-free images archived in Google Earth with the same (or ±1 day) acquisition dates as the Landsat-8 OLI images over 24 selected lakes across the globe, and developing a method to generate the alternate ground truth data from the Google Earth images for properly evaluating the Landsat image classification results.
Date:
May 18, 2020
Creator:
Pan, Feifei; Xi, Xiaohuan & Wang, Cheng
System:
The UNT Digital Library
Dynamic Classification in Web Archiving Collections
Article explores dynamic fusion models to find, on the fly, the model or combination of models that performs best on a variety of document types. The experimental results show that the approach that fuses different models outperforms individual models and other ensemble methods on three datasets.
Date:
May 2020
Creator:
Phillips, Mark Edward; Patel, Krutarth & Caragea, Cornelia
System:
The UNT Digital Library
Systemic signaling during abiotic stress combination in plants
Article reveals that plants can integrate different local and systemic signals generated during conditions of stress combination. Furthermore, results show that the specific part at which plants sense the two co-occurring stresses makes a significant difference in how fast and efficient they acclimate.
Date:
May 29, 2020
Creator:
Sengupta, Soham; Azad, Rajeev K.; Zandalinas, Sara I.; Fichman, Yosef; Devireddy, Amith R. & Mittler, Ron
System:
The UNT Digital Library
Expendable Graphite as an Efficient Flame-Retardant for Novel Partial Bio-Based Rigid Polyurethane Foams
Study presents a novel bio-polyol synthesized using carvone, an extract from caraway, spearmint, or dill seeds via facile thiol-ene reaction.
Date:
May 1, 2020
Creator:
de Souza, Felipe M.; Choi, Jonghyun; Bhoyate, Sanket; Kahol, Pawan K. & Gupta, Ram K.
System:
The UNT Digital Library
The Change Characteristics and Interactions of Soil Moisture and Temperature in the Farmland in Wuchuan County, Inner Mongolia, China
Article studying the change characteristics of soil moisture and temperature under different water level treatments in Wuchuan County, Inner Mongolia, China.
Date:
May 14, 2020
Creator:
Pan, Feifei; Zhang, Ziyuan; Pan, Zhihua; Zhang, Jun; Han, Guolin; Huang, Na et al.
System:
The UNT Digital Library
Light–matter interactions in two-dimensional layered tungsten diselenide for gauging evolution of phonon dynamics
Article exploring phonon dynamics in mechanically exfoliated two-dimensional WSe₂ using temperature-dependent and laser-power-dependent Raman and photoluminescence (PL) spectroscopy. The work reported sheds fundamental insights into the evolution of phonon dynamics in WSe₂ and should help pave the way for designing high-performance electronic, optoelectronic and thermoelectric devices in the future.
Date:
May 12, 2020
Creator:
Bandyopadhyay, Avra S.; Biswas, Chandan & Kaul, Anupama
System:
The UNT Digital Library
Insertional mutagenesis of Brachypodium distachyon using the Tnt1 retrotransposable element
Article is a study exploring the possibility of using the tobacco retrotransposon Tnt1 to create a transposon-based insertion mutant population in B. distachyon.
Date:
May 15, 2020
Creator:
Serrani-Yarce, Juan C.; Nandety, Raja Sekhar; Gill, Upinder S.; Oh, Sunhee; Lee, Hee-Kyung; Zhang, Xinji et al.
System:
The UNT Digital Library
Sc3N@Ih-C80 based donor–acceptor conjugate: role of thiophene spacer in promoting ultrafast excited state charge separation
Article reports light induced charge separation in a newly synthesized triphenylamine–thiophene-Sc₃N@Iₕ-C₈₀ donor–acceptor conjugate and its C₆₀ analog, triphenylamine–thiophene-C₆₀ conjugate, and the significance of the thiophene spacer in promoting electron transfer events.
Date:
May 27, 2020
Creator:
Gobeze, Habtom B.; D'Souza, Francis; Caballero, Rubén; Servián, Luis David; Fernandez-Delgado, Olivia; Echegoyen, Luis et al.
System:
The UNT Digital Library
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.
System:
The UNT Digital Library