Geography Commons^™

17O-Excess In Tropical Cyclones Reflects Local Rain Re-Evaporation More Than Moisture Source Conditions, Chijun Sun, Timothy Shanahan, Shaoneng He, Adriana Bailey, Jesse Nusbaumer, Jun Hu, Aubrey Hillman, Erika Ornouski, Jacob Warner, Kristine Delong

Faculty Publications

17O-excess is a relatively new water isotope parameter that could potentially provide useful information about the hydrological cycle. Previous works focusing on 17O-excess in polar regions suggest that it primarily tracks moisture source relative humidity, but little is known about how to interpret 17O-excess data in lower latitudes. Here we present quasi-hourly triple oxygen isotope data of precipitation collected from two tropical cyclones in Texas and Louisiana in 2020 to understand the impacts of environmental and meteorological processes on the 17O-excess of low-to mid-latitude precipitation. We find that at both hourly timescales and the event scale, 17O-excess is strongly correlated …

Introductory Geology Laboratory Students' Learnings From And Perceptions Of Physical And Virtual Polarizing Light Microscopes – An Exploratory Mixed Methods Study, Christy M. Bebeau

USF Tampa Graduate Theses and Dissertations

Undergraduate geoscience laboratory courses provide hands-on learning about earth materials. However thin section analysis is not typically included in introductory geology laboratories, likely due to the polarizing light microscope (PLM) costs. Therefore, there is a lack of research about the educational outcomes of novices learning these skills.

In this inquiry, I conducted mixed methods research about novice students' learning of thin section analysis in an introductory geology laboratory and evaluated learning and perception differences between students who used a virtual PLM and those who used a physical PLM. I collected data from Creative Exercise (CE) assessments in student midterm and …

More Adventures With Chicory: Things Get Wild, Jean Lavigne

Environmental Studies Faculty Publications

No abstract provided.

Migration Patterns Of Young Adults In Nevada, Annie Vong, Caitlin J. Saladino, William E. Brown Jr.

Demography

This fact sheet examines data on young adult migration patterns for two commuting zones in Nevada: Las Vegas, AZ & NV and Reno, NV. The original report published by Opportunity Insights features data from the United States Census Bureau and examines young adult migration patterns for commuting zones across the United States.

Homelessness Assessment Of The Mountain West, 2023, Mohit Pande, Miguel Soriano Ralston, Riley Ruff, Zachary Billot, Annie Vong, Caitlin J. Saladino, William E. Brown Jr.

Demography

This fact sheet examines 2023 homelessness assessment data from the U.S. Department of Housing and Urban Development for five Mountain West states: Arizona, Colorado, Nevada, New Mexico, and Utah.

Discovering Italian Chicory, Jean Lavigne

Environmental Studies Faculty Publications

No abstract provided.

Effects Of Social Media Use Disparities On Community Resilience To Disasters, Kejin Wang

LSU Doctoral Dissertations

With the rapid development of social media, many researchers chose to use social media data to conduct studies of disaster resilience. This dissertation addresses three fundamental challenges related to social media use and disaster resilience analysis including: how the spatial analysis scale affects the results of social media use disparity and its impacts on disaster resilience; how different vulnerability and resilience measurement methods can generate very different results; and how social media use disparity can be identified to help improve the fairness of AI-based emergency rescue model development. Therefore, the first part of the dissertation measured the relationships between disparities …

Learning To Be Reflexive In Qualitative Research: Improving Training For Doctoral Students In Business Schools, Eun Su Lee

The Qualitative Report

Doctoral education in business schools is focused on a functional approach to research training. While this approach is necessary, it rarely encompasses reflexivity in qualitative research, despite its importance. This paper provides the groundwork for educators in business schools to reconsider the conventional approach to teaching qualitative methods. It draws on my personal and professional experience as a key resource to shape its examination of doctoral education in conducting qualitative research. The paper offers points of reflection on the struggle students may face in conducting rigorous qualitative research without appropriately understanding the influence of self with previous experience, preconceived ideas, …

“Urban Renewal” Surrounding Florida Solar Plants: A Study On Low-Carbon Gentrification, Megan Amber Grove

USF Tampa Graduate Theses and Dissertations

Renewable energy and sustainable living are growing trends in Florida as the state “develops” rural landscapes and “redevelops” urban ones, resulting in neighborhood changes, including displacement of low-income and minority populations (LIMP). Solar energy has not historically been a root cause of such changes, but in recent years it has increasingly accompanied neighborhood development which prioritizes the interests of the elite and middle class. As such, it has become a contributor to “urban renewal,” which must be addressed to avoid future LIMP displacement. This study used geospatial and data science technologies and techniques to empirically explore and analyze urbanization and …

Ground Electric Field, Atmospheric Weather And Electric Grid Variations In Northeast Greece Influenced By The March 2012 Solar Activity And The Moderate To Intense Geomagnetic Storms, Georgios Anagnostopoulos, Anastasios Karkanis, Athanasios Kampatagis, Panagiotis Marhavilas, Sofia-Anna Menesidou, Dimitrios Efthymiadis, Stefanos Keskinis, Dimitar Ouzounov, Nick Hatzigeorgiu, Michael Danakis

Mathematics, Physics, and Computer Science Faculty Articles and Research

In a recent paper, we extended a previous study on the solar solar influence to the generation of the March 2012 heatwave in the northeastern USA. In the present study we check the possible relationship of solar activity with the early March 2012 bad weather in northeast Thrace, Greece. To this end, we examined data from various remote sensing instrumentation monitoring the Sun (SDO satellite), Interplanetary space (ACE satellite), the Earth’s magnetosphere (Earth-based measurements, NOAA-19 satellite), the top of the clouds (Terra and Aqua satellites), and the near ground atmosphere. Our comparative data analysis suggests that: (i) the winter-like weather …

Pal-Bert: An Improved Question Answering Model, Wenfeng Zheng, Siyu Lu, Zhuohang Cai, Ruiyang Wang, Lei Wang, Lirong Yin

Faculty Publications

In the field of natural language processing (NLP), there have been various pre-training language models in recent years, with question answering systems gaining significant attention. However, as algorithms, data, and computing power advance, the issue of increasingly larger models and a growing number of parameters has surfaced. Consequently, model training has become more costly and less efficient. To enhance the efficiency and accuracy of the training process while reducing the model volume, this paper proposes a first-order pruning model PAL-BERT based on the ALBERT model according to the characteristics of question-answering (QA) system and language model. Firstly, a first-order network …

Evaluating The Environmental Impacts Of U.S. Historical Oil Spill Incidents, Yiming Liu, Hua Cai

Graduate Industrial Research Symposium

Exposure to risks associated with the production and usage of products, particularly oil, poses significant threats to both ecological systems and human health. Notable examples include the Gulf War Oil Spill (1991) and the Deepwater Horizon Oil Spill (2010). However, numerous smaller-scale oil spills, which collectively contribute to substantial oil releases, often remain overlooked. To fill this gap, our study first developed a detailed oil spill incidents database, covering 1967 to 2023. We quantified the released amount (RA) of oil spills recorded by the National Oceanic and Atmospheric Administration (NOAA). Subsequently, we utilized life cycle impact indicators in ReCiPe to …

Southern Nevada Regional Industrial Study, Brookings Mountain West, Center For Business And Economic Research, Transportation Research Center

Policy Briefs and Reports

Recognizing the ongoing need to diversify the Southern Nevada economy, in 2023 GOED commissioned Brookings Mountain West, the UNLV Center for Business and Economic Research, and the UNLV Transportation Research Center to evaluate how Southern Nevada can leverage its geography and connectivity to neighboring states and metros at the megapolitan level to pursue industrial opportunities in the face of shifting global supply chains, diminishing developable land, the need for efficient management of the regional water supply, and the availability of unprecedented federal resources to support clean energy development, manufacturing, electrification of transportation systems, and supply-chain resiliency.

The study builds on …

Design And Test The Effectiveness Of Interpretive Signs Using Eye Tracking And Biometric Data, Hadara Gordon, Wendy Miyazaki

Baker/Koob Endowments Awarded Projects

Recreational trails on forested lands should satisfy the needs of recreationists, safeguard important habitats, and maintain the natural environment (Kortenkamp et al., 2021). Appropriate management is critical because of the increasing number of visitors. Signs are a cost-effective method to reduce the negative impacts on visitors and enhance visitor experiences (Brown et al., 2010). This research aimed to investigate how visitors pay attention to signs, view the trail surrounded by trees and behave in a natural space.

Drivers Of Tree Canopy Loss In A Mid-Sized Growing City: Case Study In Portland, Or (Usa), Yunjae Ock, Vivek Shandas, Fernanda Ribeiro, Noah Young

Geography Faculty Publications and Presentations

The benefits of the urban tree and tree canopy (UTC) are increasingly crucial in addressing urban sustainability. Yet, increasingly evident from earlier research is the distributional inequities of UTC and active efforts to expand tree plantings. Less is known about the dynamics of UTC loss over time and location. This study aims to understand the dynamics of UTC change, especially canopy loss, and to investigate the drivers of the loss. This study draws on a high–resolution dataset of an urban canopy in Portland, Oregon, USA, assessing changes in UTC from 2014 to 2020. By integrating demographic, biophysical, and policy data …

Utilizing Hyperspectral Remote Sensing For Saline Soil Assessment In The Emirate Of Abu Dhabi, United Arab Emirates, Alya Hassan Aldhaheri

Theses

This study presents the application of hyperspectral remote sensing techniques to measure soil salinity. Soil salinity is a major concern in many arid and semi-arid regions, affecting crop productivity and ecosystem health. In most arid and semi-arid areas various levels of salinity can be encountered including sabkhas. Sabkha (salt flat) is a geological feature composed of saline and salt marshes that typically occur in shallow or coastal environments within arid and semi-arid climates. Traditional methods of measuring soil salinity are time-consuming and labor-intensive, making remote sensing techniques an attractive alternative. This study employed a hyperspectral sensor specifically the SVC-XHR-1024i to …

Gendered Perceptions And Socio-Economic And Spatial Determinants Of Fear Of Crime: An Empirical Analysis In Szczecin, Poland, Natalia Sypion, Arkadiusz Kołodziej, Michael Leitner, Marek Dutkowski

Faculty Publications

The study of the fear of crime phenomenon provides a socially and politically important research question. Many studies show that gender differentiates the fear of crime, which is why we examine this phenomenon in a spatial perspective. The female versus male perspective of feelings of safety in residential areas were significantly different. The research was carried out using the CAWI technique in the city of Szczecin, in Poland (n=346). The research also examined which factors influenced the fear of crime the most: darkness, socio-economic characteristics, type of violations, number of registered crimes, or the assessment of police work. The research …

Exploring The Dynamics Of Cross-Boundary Interactions In Qinglinkou, China: The Perspective Of Networks Of Second-Home Owners, Meiling Wu, Mengqiu Cao, Jiuxia Sun

Research Collection School of Social Sciences

Cross-boundary interactions between second-home owners and local are complex over time–networks form and evolve within second-home owners and between owners and locals, each with its deliberately selective inclusion and exclusion. However, little attention has been paid to this phenomenon in the literature. This study, based on social network analysis alongside qualitative interviews, explores the dynamics of interactions between second-home owners and locals by analysing the networks formed by second-home owners in Qinglinkou, China. The ways in which second-home owners maintain and strengthen pre-existing networks with other owners and forge new links with locals, shape the cross-boundary interactions between the two …

Cultural Context Index: A Geospatial Measure Of Social Determinants Of Health In The United States, Alaina M Beauchamp, Gordon C Shen, Syed H Hussain, Atif Adam, Linda Highfield, Kai Zhang

Faculty, Staff and Student Publications

Minority populations will continue to grow in the United States. Such pluralism necessitates iterative, geospatial measurements of cultural contexts. Our objective in this study was to create a measure of social determinants of health in geographic areas with varying ethnic, linguistic, and religious diversity in the United States. We extracted geographic information systems data based on community characteristics that have known associations with population health disparities from 2015 to 2019. We used principal component analysis to construct a Cultural Context Index (CCI). We created the CCI for 73,682 census tracts across 50 states and five inhabited territories. We identified hot …

Relocating Lubra Village And Visualizing Himalayan Flood Damages With Remote Sensing, Ronan Wallace, Yungdrung Tsewang Gurung, Ryan Kastner

Journal of Critical Global Issues

As weather patterns change worldwide, isolated communities impacted by climate change go unnoticed and we need community-driven solutions. In Himalayan Mustang, Nepal, indigenous Lubra Village faces threats of increasing flash flooding. After every flood, residual muddy sediment hardens across the riverbed like concrete, causing the riverbed elevation to rise. As elevation increases, sediment encroaches on Lubra’s agricultural fields and homes, magnifying flood vulnerability. In the last monsoon season alone, the Lubra community witnessed floods swallowing several agricultural fields and damaging two homes. One solution considers relocating the village to a new location entirely. However, relocation poses a challenging task, as …