Search results | J. Murrey Atkins Library

Title: A high-efficiency low-wearing hybrid voltage regulator for utility applications
Author: Zhao, Tiefu, Wang, Yafeng
Date Created: 2023
Subjects--Topical: Voltage regulators, Electric power distribution
Description: Step voltage regulator (SVR) has been utilized in power distribution systems for decades as the voltage regulation device. Due to the increasing integration of distributed energy resources, the conventional SVR is severely challenged by the modern...

Title: An all optical approach for comprehensive in-operando analysis of radiative and nonradiative recombination processes in GaAs double heterostructures
Author: Zhang, Y. (Yong), 1960-, Zhang, Fan, Castaneda, Jose, Gfroerer, Timothy, Friedman, Daniel, Zhang, Yong-Hang, Wanlass, Mark W.
Subjects--Topical: Optics, Photoluminescence
Description: We demonstrate an all optical approach that can surprisingly offer the possibility of yielding much more information than one would expect, pertinent to the carrier recombination dynamics via both radiative and nonradiative processes when only one...

Title: COVID-19 pandemic severity, lockdown regimes, and people’s mobility : early evidence from 88 countries
Author: Thill, Jean-Claude, Rahman, Md. Mokhlesur, Paul, Kamal Chandra
Subjects--Topical: Public health, COVID-19 (Disease), Social distancing (Public health)
Description: This study empirically investigates the complex interplay between the severity of the coronavirus pandemic, mobility changes in retail and recreation, transit stations, workplaces, and residential areas, and lockdown measures in 88 countries aroun...

Title: Contrastive learning‑based pretraining improves representation and transferability of diabetic retinopathy classification models
Author: Alam, Minhaj Nur, Yamashita, Rikiya, Ramesh, Vignav, Prabhune, Tejas, Lim, Jennifer I., Chan, R. V. P., Hallak, Joelle, Leng, Theodore, Rubin, Daniel
Date Created: 2023
Subjects--Topical: Diabetic retinopathy, Diabetes
Description: Diabetic retinopathy (DR) is a major cause of vision impairment in diabetic patients worldwide. Due to its prevalence, early clinical diagnosis is essential to improve treatment management of DR patients. Despite recent demonstration of successful...

Title: Joint power control and routing for rechargeable wireless sensor networks
Author: Nasipuri, Asis, Pal, Amitangshu
Date Created: 2016
Description: Wireless sensor networks (WSN) that are powered by energy harvested from the environment, also known as rechargeable WSNs, typically experience wide variations of energy availability across the network. Such variations can cause frequent node outa...

Title: Machine learning on the COVID-19 pandemic, human mobility and air quality : a review
Author: Thill, Jean-Claude, Rahman, Md. Mokhlesur, Paul, Kamal Chandra
Date Created: 2021
Subjects--Topical: Machine learning, COVID-19 (Disease)
Description: The ongoing COVID-19 global pandemic is touching every facet of human lives (e.g., public health, education, economy, transportation, and the environment). This novel pandemic and non-pharmaceutical interventions of lockdown and confinement implem...

Title: Multiple-stage structure transformation of organic-inorganic hybrid Perovskite CH3NH3PbI3
Author: Zhang, Y. (Yong), 1960-, Chen, Qiong, Kim, Hui-Seon, Liu, Yucheng, Yang, Mengjin, Yue, Naili, Ren, Gang, Zhu, Kai, Lu, Shengzhong, Park, Nam-Gyu
Subjects--Topical: Physics, Perovskite
Description: By performing spatially resolved Raman and photoluminescence spectroscopy with varying excitation wavelength, density, and data acquisition parameters, we achieve a unified understanding towards the spectroscopy signatures of the organic-inorganic...

Title: Photo-induced macro/mesoscopic scale ion displacement in mixed-halide perovskites : ring structures and ionic plasma oscillations
Author: Zhang, Y. (Yong), 1960-, Sun, Xiaoxiao, Ge, Weikun
Date Created: 2022
Subjects--Topical: Ions, Physics
Description: Contrary to the common belief that the light-induced halide ion segregation in a mixed halide alloy occurs within the illuminated area, we find that the Br ions released by light are expelled from the illuminated area, which generates a macro/meso...

Title: Power characteristics of planar index-antiguided waveguide lasers with transverse mode competition
Author: Her, Tsing-Hua, Wang, Chaofan, Liu, Yuanye, Casperson, Lee W.
Subjects--Topical: Lasers, Lasers--Resonators
Description: We report comprehensive analysis of output characteristics of homogeneously broadened index-antiguided slab lasers with transverse mode competition. Robust single fundamental mode operation is achieved when the distributive modal loss due to index...

Title: Predicting lightning-related outages in power distribution systems : a statistical approach
Author: Chowdhury, Badrul, Doostan, Milad
Subjects--Topical: Machine learning, Electric power distribution--Communication systems, Lightning
Description: This paper presents a novel data-driven approach for predicting lightning-related outages that occur in power distribution systems on a daily basis. In order to develop an approach that is able to successfully fulfill this objective, there are two...

Title: Public perceptions of COVID-19 vaccines : policy implications from us spatiotemporal sentiment analytics
Author: Thill, Jean-Claude, Rahman, Md. Mokhlesur, Paul, Kamal Chandra
Date Created: 2021
Subjects--Topical: Sentiment analysis, COVID-19 (Disease)
Description: There is a compelling and pressing need to better understand the temporal dynamics of public sentiment towards COVID-19 vaccines in the US on a national and state-wise level for facilitating appropriate public policy applications. Our analysis of ...

Title: Topologic connection between 2-D layered structures and 3-D diamond structures for conventional semiconductors
Author: Zhang, Y. (Yong), 1960-, Wang, Jianwei
Date Created: 2016
Subjects--Topical: Density functionals, Two-dimensional materials
Description: When coming to identify new 2D materials, our intuition would suggest us to look from layered instead of 3D materials. However, since graphite can be hypothetically derived from diamond by stretching it along its [111] axis, many 3D materials can ...

Title: Toward reaching a consensus on the concept of power system resilience : definitions, assessment frameworks, and metrics
Author: Chowdhury, Badrul, Kaloti, Sujay
Date Created: 2023
Subjects--Topical: Electric power systems, Climatic changes
Description: The electric power system plays an integral part in the well-being of the modern society. Because of climate change, the ageing power system infrastructure is under threat due to the ever-increasing intensity and frequency of high-impact, low-prob...

Title: Towards secure and intelligent network slicing for 5G networks
Author: Salahdine, Fatima, Liu, Qiang, Han, Tao
Subjects--Topical: 5G mobile communication systems, Computer networks--Security measures
Description: Network slicing is one of the emerging technologies allowing resource sharing among different network entities in 5G networks. It enables delivering smart, critical, and multi-services with distinctive requirements transiting from network as an in...