Open Access. Powered by Scholars. Published by Universities.®

Digital Commons Network™

Open Access. Powered by Scholars. Published by Universities.®

Louisiana State University

Discipline
Keyword
Publication Year
Publication
Publication Type
File Type

Articles 2191 - 2220 of 21708

Full-Text Articles in Entire DC Network

Covid-19 And Traffic Safety: Exploring Exposure, Crash Frequency And Severity, And Roadway And Network Design, Nicholas N. Ferenchak Ph.D Aug 2022

Covid-19 And Traffic Safety: Exploring Exposure, Crash Frequency And Severity, And Roadway And Network Design, Nicholas N. Ferenchak Ph.D

Publications

Early COVID-19 lockdowns in the first half of 2020 largely kept people at home, thereby reducing motor vehicle traffic levels. Theoretically, reduced traffic exposure should have resulted in reduced motor vehicle crashes. However, a variety of factors may have complicated this relationship. In order to better understand the impact of COVID-19 lockdowns on traffic safety outcomes, we explore fatalities, injuries, and total crashes before and during the lockdowns on both the national and state levels. We provide descriptive statistics and create negative binomial regressions exploring the role of vehicle, user, and built environment factors on traffic safety outcomes. Findings suggest …

Go to article

Increasing Bridge Durability And Service Life With Lidar Enhanced Unmanned Aerial Systems (Uas), Fernando Moreu, Mahsa Sanei, Chris Lippitt Aug 2022

Increasing Bridge Durability And Service Life With Lidar Enhanced Unmanned Aerial Systems (Uas), Fernando Moreu, Mahsa Sanei, Chris Lippitt

Publications

Bridge construction inspections require quantitative measurements and location information. The conventional approach is visual inspection, which in general, is rather time-consuming, expensive due to traffic closure, subjective, and needs special access. Therefore an automated rebar layout detection algorithm was developed to quickly extract quantitative rebar layout information from the LiDAR data. This systematic method can automatically cluster the bridge elements from a 3D point cloud by using LiDAR-equipped UAS data collection and unsupervised machine learning techniques. A new automated inspection system using a LIDAR-equipped UAS can eventually if developed and tested be more reliable as well as less expensive. In …

Go to article

Relational Turbulence And Social Network Engagement During The Summer Of Covid-19: A Repeated Measures, Dyadic Analysis, Kellie S. Brisini, Denise H. Solomon Aug 2022

Relational Turbulence And Social Network Engagement During The Summer Of Covid-19: A Repeated Measures, Dyadic Analysis, Kellie S. Brisini, Denise H. Solomon

Faculty Publications

Background/Purpose: Relational turbulence theory suggests that changes in and around relationships create the potential for relational turbulence when everyday routines and scripts are upended and communication becomes polarized. In turn, perceptions of a romantic relationship as chaotic or tumultuous can influence a person’s engagement with their social network. Alternately, previous research also suggests that engagement with friends and family has the potential to influence married partner’s relationship quality. Research Design: This study examined these propositions among a sample of married couples (N = 64, 128 individuals) whose daily experiences and relationship dynamics changed during the COVID-19 lockdown period. Results/Conclusions: Based …

Go to article

Developing A Conceptual Passive Contact Tracing System For Commercial Buildings Using Wifi Indoor Positioning, Sorena Vosoughkhosravi, Amirhosein Jafari Aug 2022

Developing A Conceptual Passive Contact Tracing System For Commercial Buildings Using Wifi Indoor Positioning, Sorena Vosoughkhosravi, Amirhosein Jafari

Faculty Publications

Contact tracing is one of the critical tools for fighting against pandemic disease outbreaks, such as the fast-growing SARS-CoV-2 virus and its different variants. At present, automated contact tracing systems face two main challenges: (1) requiring application installation on smart devices and (2) protecting the users’ privacy. This study introduces a conceptual passive contact tracing system using indoor WiFi positioning to address these challenges and investigate the role of such a system in commercial buildings. In this regard, this study uses a simulated small-office layout in a case study to demonstrate the applicability of the proposed system. The special use …

Go to article

The Need For A Framework Addressing The Temporal Aspects Of Fish Sperm Motility Leading To Community-Level Standardization, Harvey Blackburn, Leticia Torres, Yue Liu, Terrence R. Tiersch Aug 2022

The Need For A Framework Addressing The Temporal Aspects Of Fish Sperm Motility Leading To Community-Level Standardization, Harvey Blackburn, Leticia Torres, Yue Liu, Terrence R. Tiersch

Faculty Publications

Motility is a widely available parameter that can be used to assess sperm quality of aquatic species. Sperm from fishes with external fertilization usually undergo a dynamic and short-lived period of motility after activation. The common practice of assigning a single value at an arbitrary peak of motility presents challenges for reproducibility, community-level standardization, and comparisons across studies. This study aimed to explore statistical approaches to standardize motility reporting, and to develop an initial framework for community-level standards. Sperm samples from 14 zebrafish (Danio rerio) with a total of 21,705 cells were analyzed by use of computer-assisted sperm analysis with …

Go to article

Icam-1 Abundance Is Increased In Pancreatic Islets Of Hyperglycemic Female Nod Mice And Is Rapidly Upregulated By Nf-Κb In Pancreatic B-Cells, Thomas M. Martin, Susan J. Burke, Heidi M. Batdorf, David H. Burk, Sujoy Ghosh, Samuel D. Dupuy, Michael D. Karlstad, J. Jason Collier Aug 2022

Icam-1 Abundance Is Increased In Pancreatic Islets Of Hyperglycemic Female Nod Mice And Is Rapidly Upregulated By Nf-Κb In Pancreatic B-Cells, Thomas M. Martin, Susan J. Burke, Heidi M. Batdorf, David H. Burk, Sujoy Ghosh, Samuel D. Dupuy, Michael D. Karlstad, J. Jason Collier

Division of Basic Science Faculty Publications

Type 1 diabetes (T1D) is classified as an autoimmune disease where pancreatic b-cells are specifically targeted by cells of the immune system. The molecular mechanisms underlying this process are not completely understood. Herein, we identified that the Icam1 gene and ICAM-1 protein were selectively elevated in female NOD mice relative to male mice, fitting with the sexual dimorphism of diabetes onset in this key mouse model of T1D. In addition, ICAM-1 abundance was greater in hyperglycemic female NOD mice than in age-matched normoglycemic female NOD mice. Moreover, we discovered that the Icam1 gene was rapidly upregulated in response to IL-1β …

Go to article

A Higher Proportion Of Small Adipocytes Is Associated With Increased Visceral And Ectopic Lipid Accumulation During Weight Gain In Response To Overfeeding In Men, Ursula White, Robbie A. Beyl, Eric Ravussin Aug 2022

A Higher Proportion Of Small Adipocytes Is Associated With Increased Visceral And Ectopic Lipid Accumulation During Weight Gain In Response To Overfeeding In Men, Ursula White, Robbie A. Beyl, Eric Ravussin

Clinical Research Faculty Publications

Background: Adipose tissue (AT) expansion occurs by hypertrophy (increase in size) and hyperplasia (increase in number) of adipocytes. The AT expandability hypothesis postulates that impaired subcutaneous AT expansion leads to ectopic fat accretion, contributing to impaired metabolic health. The role of adipogenesis as a contributing factor is debatable. Subjects/Methods: In the present analysis, we assess changes in adipocyte size distribution in relation to changes in ectopic fat accretion in response to 8-weeks of overfeeding in 22 men (28 ± 5.4 years; BMI 25.5 ± 2.3 kg/m2) who were fed 40% over their baseline energy requirements. Results: Participants gained 6.7 ± …

Go to article

Reply To G Taubes, Mi Friedman, And V Torres-Carot Et Al., Kevin D. Hall, I. Sadaf Farooqi, Jeffery M. Friedman, Samuel Klein, Ruth J.F. Loos, David J. Mangelsdorf, Stephen O’Rahilly, Eric Ravussin, Leanne M. Redman, Donna H. Ryan, John R. Speakman, Deirdre K. Tobias Aug 2022

Reply To G Taubes, Mi Friedman, And V Torres-Carot Et Al., Kevin D. Hall, I. Sadaf Farooqi, Jeffery M. Friedman, Samuel Klein, Ruth J.F. Loos, David J. Mangelsdorf, Stephen O’Rahilly, Eric Ravussin, Leanne M. Redman, Donna H. Ryan, John R. Speakman, Deirdre K. Tobias

Clinical Research Faculty Publications

No abstract provided.

Go to article

Nutritional Quality Of Calorie Restricted Diets In The Calerie™ 1 Trial, Susan B. Racette, Valene Garr Barry, Connie W. Bales, Megan A. Mccrory, Kathleen A. Obert, Cheryl H. Gilhooly, Susan B. Roberts, Corby K. Martin, Catherine Champagne, Sai Krupa Das Aug 2022

Nutritional Quality Of Calorie Restricted Diets In The Calerie™ 1 Trial, Susan B. Racette, Valene Garr Barry, Connie W. Bales, Megan A. Mccrory, Kathleen A. Obert, Cheryl H. Gilhooly, Susan B. Roberts, Corby K. Martin, Catherine Champagne, Sai Krupa Das

Clinical Research Faculty Publications

Objectives: The aim was to determine the nutritional adequacy of calorie restricted (CR) diets during CR interventions up to 12 months. Methods: The Comprehensive Assessment of Long-Term Effects of Reducing Intake of Energy (CALERIE™) phase 1 trial consisted of 3 single-site studies to test the feasibility and effectiveness of CR in adults without obesity. After baseline assessments, participants who were randomized to a CR intervention received education and training from registered dietitians on how to follow a healthful CR diet. Food diaries were completed at baseline and during the CR interventions (~6, 9, and 12 months) when participants were self-selecting …

Go to article

Gradient And Acceleration Of Decline In Physical And Cognitive Functions In Older Adults: A Disparity Analysis, H. Ip Edward, Shyh Huei Chen, W. Jack Rejeski, Karen Bandeen-Roche, Kathleen M. Hayden, Christina E. Hugenschmidt, June Pierce, Michael E. Miller, Jaime L. Speiser, Stephen B. Kritchevsky, Denise K. Houston, Robert L. Newton, Stephen R. Rapp, Dalane W. Kitzman Aug 2022

Gradient And Acceleration Of Decline In Physical And Cognitive Functions In Older Adults: A Disparity Analysis, H. Ip Edward, Shyh Huei Chen, W. Jack Rejeski, Karen Bandeen-Roche, Kathleen M. Hayden, Christina E. Hugenschmidt, June Pierce, Michael E. Miller, Jaime L. Speiser, Stephen B. Kritchevsky, Denise K. Houston, Robert L. Newton, Stephen R. Rapp, Dalane W. Kitzman

Population and Public Health Science Faculty Publications

Background: Substantive previous work has shown that both gait speed and global cognition decline as people age. Rates of their decline, as opposed to cross-sectional measurements, could be more informative of future functional status and other clinical outcomes because they more accurately represent deteriorating systems. Additionally, understanding the sex and racial disparity in the speed of deterioration, if any, is also important as ethnic minorities are at an increased risk of mobility disability and dementia. Method: Data from 2 large longitudinal intervention studies were integrated. Rates of decline were derived from individual-level measures of gait speed of 400-m walk and …

Go to article

Density Of States And Delocalization For Discrete Magnetic Random Schrödinger Operators, Simon Becker, Rui Han Aug 2022

Density Of States And Delocalization For Discrete Magnetic Random Schrödinger Operators, Simon Becker, Rui Han

Faculty Publications

We study discrete magnetic random Schrödinger operators on the square and honeycomb lattice. For the non-random magnetic operator on the hexagonal lattice with any rational magnetic flux, we show that the middle two dispersion surfaces exhibit Dirac cones. We then derive an asymptotic expansion for the density of states on the honeycomb lattice for oscillations of arbitrary rational magnetic flux. This allows us, as a corollary, to rigorously study the quantum Hall effect and conclude dynamical delocalization close to the conical point under disorder. We obtain similar results for the discrete random Schrödinger operator on the Z2-lattice with …

Go to article

Systematic Kmtnet Planetary Anomaly Search: V. Complete Sample Of 2018 Prime-Field, Andrew Gould, Cheongho Han, Weicheng Zang, Hongjing Yang, Kyu Ha Hwang, Andrzej Udalski, Ian A. Bond, Michael D. Albrow, Sun Ju Chung, Youn Kil Jung, Yoon Hyun Ryu, In Gu Shin, Yossi Shvartzvald, Jennifer C. Yee, Sang Mok Cha, Dong Jin Kim, Hyoun Woo Kim, Seung Lee Kim, Chung Uk Lee, Dong Joo Lee, Yongseok Lee, Byeong Gon Park, Richard W. Pogge, Przemek Mróz, Michal K. Szymanski, Jan Skowron, Radek Poleski, Igor Soszynski, Pawel Pietrukowicz, Szymon Kozlowski, Krzysztof Ulaczyk, Krzysztof A. Rybicki, Patryk Iwanek Aug 2022

Systematic Kmtnet Planetary Anomaly Search: V. Complete Sample Of 2018 Prime-Field, Andrew Gould, Cheongho Han, Weicheng Zang, Hongjing Yang, Kyu Ha Hwang, Andrzej Udalski, Ian A. Bond, Michael D. Albrow, Sun Ju Chung, Youn Kil Jung, Yoon Hyun Ryu, In Gu Shin, Yossi Shvartzvald, Jennifer C. Yee, Sang Mok Cha, Dong Jin Kim, Hyoun Woo Kim, Seung Lee Kim, Chung Uk Lee, Dong Joo Lee, Yongseok Lee, Byeong Gon Park, Richard W. Pogge, Przemek Mróz, Michal K. Szymanski, Jan Skowron, Radek Poleski, Igor Soszynski, Pawel Pietrukowicz, Szymon Kozlowski, Krzysztof Ulaczyk, Krzysztof A. Rybicki, Patryk Iwanek

Faculty Publications

We complete the analysis of all 2018 prime-field microlensing planets identified by the Korea Microlensing Telescope Network (KMTNet) Anomaly Finder. Among the ten previously unpublished events with clear planetary solutions, eight are either unambiguously planetary or are very likely to be planetary in nature: OGLE-2018-BLG-1126, KMT-2018-BLG-2004, OGLE-2018-BLG-1647, OGLE-2018-BLG-1367, OGLE-2018-BLG-1544, OGLE-2018-BLG-0932, OGLE-2018-BLG-1212, and KMT-2018-BLG-2718. Combined with the four previously published new Anomaly Finder events and 12 previously published (or in preparation) planets that were discovered by eye, this makes a total of 24 2018 prime-field planets discovered or recovered by Anomaly Finder. Together with a paper in preparation on 2018 subprime …

Go to article

Pyrolysis Temperature Affects Dissolved Phosphorus And Carbon Levels In Alkali-Enhanced Biochar And Its Soil Applications, Meng Wang, Jim J. Wang, Jong Hwan Park, Jian Wang, Xudong Wang, Zuoping Zhao, Fengmin Song, Bo Tang Aug 2022

Pyrolysis Temperature Affects Dissolved Phosphorus And Carbon Levels In Alkali-Enhanced Biochar And Its Soil Applications, Meng Wang, Jim J. Wang, Jong Hwan Park, Jian Wang, Xudong Wang, Zuoping Zhao, Fengmin Song, Bo Tang

Faculty Publications

Alkali-enhanced biochars, as an environment-friendly material, combine the advantages of biomass nutrients and carbon fixation. In this study, rice-residue-derived biochars were evaluated for P and C solubility and their amendment upon plant P uptake. Biochars from rice straw (RS) and husk (RH), including raw biochar without alkaline pretreatment (0B), alkali-enhanced biochars with KOH (5KB, 5 g KOH per 100 g feedstock;10KB, 10 g KOH per 100 g feedstock), K2CO3 (5K2B, 5 g K2CO3 per 100 g feedstock; 10K2B, 10 g K2CO3 per 100 g feedstock), and CaO (5CB, 5 g CaO per 100 g feedstock; 10CB,10 g CaO per 100 …

Go to article

The Curve Not Taken: Effects Of Covid-19 International Comparison News, Seon Woo Kim, Martina Santia, Raymond J. Pingree, Ayla Oden, Kirill Bryanov, Jessica Wyers Aug 2022

The Curve Not Taken: Effects Of Covid-19 International Comparison News, Seon Woo Kim, Martina Santia, Raymond J. Pingree, Ayla Oden, Kirill Bryanov, Jessica Wyers

Faculty Publications

International news can inform people not only about what is happening in other countries, but also about how their own country could benefit from policies that have proved successful elsewhere. Specifically, international policy comparison news, or news that compares the policies of two or more countries on the same issue, is a potentially important but underutilized and understudied form of news content. We use an experiment to test effects of exposure to news comparing the COVID-19 pandemic policies of the U.S. versus South Korea, and find that this increases knowledge of policy differences between the two countries, support for adopting …

Go to article

Intraclass Correlation Coefficients For Weight Loss Cluster Randomized Trials In Primary Care: The Propel Trial, Peter T. Katzmarzyk, Kara D. Denstel, Corby K. Martin, Robert L. Newton, John W. Apolzan, Emily F. Mire, Ronald Horswell, William D. Johnson, Andrew W. Brown, Dachuan Zhang Aug 2022

Intraclass Correlation Coefficients For Weight Loss Cluster Randomized Trials In Primary Care: The Propel Trial, Peter T. Katzmarzyk, Kara D. Denstel, Corby K. Martin, Robert L. Newton, John W. Apolzan, Emily F. Mire, Ronald Horswell, William D. Johnson, Andrew W. Brown, Dachuan Zhang

Clinical Research Faculty Publications

The aim of this study was to compute intra-class correlations (ICCs) for weight-related and patient-reported outcomes in a cluster randomized clinical trial (cRCT) for weight loss. Baseline and follow-up data from the Promoting Successful Weight Loss in Primary Care in Louisiana (PROPEL) cRCT were used in this analysis. ICCs were computed for baseline and follow-up measures, and changes in body weight, cardiometabolic risk factors and health-related and weight-related quality of life at 6, 12, 18 and 24 months. Baseline ICCs ranged from 0 for PROMIS measures of anxiety and fatigue to 0.055 for total cholesterol (median = 0.019). The ICCs …

Go to article

A Framework For Vibration Attenuation In Traffic Mast Arm Structures Under Wind Loads, A. M. Aly, H. Gol-Zaroudi, M. Rezaee Aug 2022

A Framework For Vibration Attenuation In Traffic Mast Arm Structures Under Wind Loads, A. M. Aly, H. Gol-Zaroudi, M. Rezaee

Faculty Publications

Traffic signals and information signs play a vivid role in maintaining safe travel by guiding drivers on highways and urban roads. Traffic mast arm structures are susceptible to vibrations induced by wind loads. Fatigue-induced failure is common in these structures. However, it is crucial to ascertain the functionality of signal support structures. This paper lays the foundation for a fully computational framework to model and mitigate wind-induced vibrations in traffic lighting support structures by conducting computational fluid dynamics (CFD) simulations, dynamic modeling, and damping enhancement. We validated the CFD simulations by aerodynamic testing. The dependence of flow pattern and aerodynamic …

Go to article

Effectiveness Assessment Of E-Ticketing Technology In Construction Of Transportation Projects, Sharareh Kermanshachi, Karthik Subramanya Aug 2022

Effectiveness Assessment Of E-Ticketing Technology In Construction Of Transportation Projects, Sharareh Kermanshachi, Karthik Subramanya

Publications

The construction of highway infrastructure has devoted significant resources towards e-Construction to reduce the paperwork and automate the tasks in daily operations. Electronic Ticketing (e-Ticketing) is one such component of e-Construction that aids in the digital transfer of material tickets such as asphalt and concrete which accounts for more than fifty per cent of construction costs. Despite the benefits of e-Ticketing, many state departments and agencies are unwilling to transition into this technology. No studies have identified the cause of the delay in the implementation process, developed a framework to comprehend the platform's full potential, quantified savings, and suggested strategies …

Go to article

Development Of Distress Index Prediction Models For Rehabilitation Treatments In Louisiana Using Advanced Machine Learning Techniques, Momen R. Mousa, Marwa Hassan Aug 2022

Development Of Distress Index Prediction Models For Rehabilitation Treatments In Louisiana Using Advanced Machine Learning Techniques, Momen R. Mousa, Marwa Hassan

Publications

Performance prediction models are used by state agencies to predict future trends in distress indices, hence, determining the required maintenance and/or rehabilitation treatment as well as the deterioration rate and remaining pavement service life. However, most of these models are based on a limited number of parameters and cannot predict the performance distress indices reliably. Such limitation resulted in having, most of the time, a maximum prediction period of five years. As a solution and coping with the ever-increasing size of pavement data, machine learning techniques have become a promising alternative. The objective of this study was to develop a …

Go to article

Using Rice Husk Ash (Rha) As Stabilizing Agent For Problematic Subgrade Soils And Embankments, Zahid Hossain, Rifat Bulut, Fares Tarhuni, Hussein Al-Dakheeli Aug 2022

Using Rice Husk Ash (Rha) As Stabilizing Agent For Problematic Subgrade Soils And Embankments, Zahid Hossain, Rifat Bulut, Fares Tarhuni, Hussein Al-Dakheeli

Publications

Arkansas produces the most of the rice in the United States. About 20% of poddy is rice husk (RH), which is burnt under controlled conditions to produce rice rusk ash (RHA). The RHA is considered an environmental hazard and a significant challenge for rice millers. However, RHA is rich in pozzolanic material, which is mainly silica. In this study, RHA is used to stabilize poor soils. Another commonly used stabilizer, hydrated lime (HL), has also been evaluated for comparison purposes. Thus, this study aimed to determine the optimum percentages of RHA, HL, or a combination of these two agents by …

Go to article

Detrimental Changes In Health During Menopause: The Role Of Physical Activity, Ryan M. Hulteen, Kara L. Marlatt, Timothy D. Allerton, Dragana Lovre Jul 2022

Detrimental Changes In Health During Menopause: The Role Of Physical Activity, Ryan M. Hulteen, Kara L. Marlatt, Timothy D. Allerton, Dragana Lovre

Clinical Research Faculty Publications

Midlife women experience changes in cardiometabolic, physical, and psychosocial health during menopause that negatively impacts their overall quality of life. Factors that contribute to these increases in cardiometabolic risk include weight gain as well as increases in fat mass (particularly abdominal adiposity), insulin resistance, and vascular dysfunction. Other deleterious changes in physical health (e. g. reduced sleep health, bone density, and balance) as well as changes in psychosocial health (e. g. mood, anxiety, and depression) often coincide and are linked to these increases in cardiometabolic risk. Physical activity and exercise are important lifestyle components that have been demonstrated to improve …

Go to article

Qualifying Factors That Predict Weight Loss Success Within Diet Interventions, Jordan Losavio Jul 2022

Qualifying Factors That Predict Weight Loss Success Within Diet Interventions, Jordan Losavio

LSU Master's Theses

Evidence-based diet strategies lead to weight loss for some, while for others, the same diet approach could result in trivial weight loss or even in weight gain. This prompts the underlying research question: what factors predict that a given diet strategy will be efficacious for some, but not for others? This research was a secondary analysis of clinical weight loss studies to determine which factors influence an individual’s weight loss success for three diet intervention strategies: low-carbohydrate, low-fat, and low-calorie. A combination of physiological, psychological, behavioral, and dietary factors was evaluated for each diet study. Multiple linear regression and logistic …

Go to article

Creating A Public Space For Georeferencing Sanborn Maps: A Louisiana Case Study, Adam Cox Jul 2022

Creating A Public Space For Georeferencing Sanborn Maps: A Louisiana Case Study, Adam Cox

LSU Master's Theses

As institutional archives digitize their historical map collections and make them publicly available online, new methods for engaging with these materials emerge. Georeferencing the maps transforms their content from static images to dynamic map overlays, and allows for the extraction of geographic data like building footprints or place name coordinates. Many organizations have turned to crowdsourcing to georeference their large holdings, and this thesis approaches crowdsourced georeferencing from the perspective of participatory heritage, taking much inspiration from the idea of the archival commons. To test these ideas, a new extension was created for GeoNode—an open source geospatial content management system—that …

Go to article

Understanding The Effects Of Socioeconomic Variables, Career Motivation, And Msw Education On Practice Preferences: A Quantitative National Survey Of Msw Students, Tina B. Granger Jul 2022

Understanding The Effects Of Socioeconomic Variables, Career Motivation, And Msw Education On Practice Preferences: A Quantitative National Survey Of Msw Students, Tina B. Granger

LSU Doctoral Dissertations

Over the past several decades, there has been much debate over the role of social workers in the mental health field. Factors related to career motivation and practice preferences has had limited research and many have attributed materialistic and self-seeking motives as the reason for a social work career choice. Research has shown that there may be a divergence or ‘mission drift’ from traditional social work values and mission of social justice and social change at the systems level. Identifying factors related to career motivation and practice preferences is important in an ever-evolving field such as social work. This study …

Go to article

Exercise Effects On Cognition In Older African Americans: A Pilot Randomized Trial, Kathryn L. Gwizdala, Robert Brouillete, Robbie Beyl, William Johnson, Callie Hebert, Leah Carter, Melissa Harris, Robert L. Newton, Owen T. Carmichael Jul 2022

Exercise Effects On Cognition In Older African Americans: A Pilot Randomized Trial, Kathryn L. Gwizdala, Robert Brouillete, Robbie Beyl, William Johnson, Callie Hebert, Leah Carter, Melissa Harris, Robert L. Newton, Owen T. Carmichael

Clinical Research Faculty Publications

Introduction: Regular physical activity lowers risk for cognitive decline and neurodegenerative disorders. Older African Americans (AAs) have been underrepresented in trials that increased physical activity to improve cognitive outcomes. Methods: 56 sedentary, older, cognitively healthy AAs (avg. 69.2 ± 3.4 yrs. old) were randomized in 1:1 ratio into either a 12-week successful aging group (SAG) or a 12-week physical activity group (PAG). Participants in SAG attended weekly 60-min educational sessions in which healthy aging topics were discussed. Participants in PAG attended supervised physical activity sessions twice per week at local YMCAs (90–120 min/week) and were prescribed 2–3 days per week …

Go to article

Effect Of Ultraviolet Light Treatment On Microbiological Safety And Quality Of Fresh Produce: An Overview, Veerachandra Yemmireddy, Achyut Adhikari, Juan Moreira Jul 2022

Effect Of Ultraviolet Light Treatment On Microbiological Safety And Quality Of Fresh Produce: An Overview, Veerachandra Yemmireddy, Achyut Adhikari, Juan Moreira

Faculty Publications

Fresh and fresh-cut fruits and vegetables have been associated in several foodborne illness outbreaks. Although investigations from those outbreaks reported that the contamination with pathogenic microorganisms may occur at any point in the farm to fork continuum, effective control strategies are still being widely investigated. In that direction, the concept of hurdle technology involving a sequence of different interventions have been widely explored. Among those interventions, ultraviolet (UV) light alone or in combination with other treatments such as use of organic acids or sanitizer solutions, has found to be a promising approach to maintain the microbiological safety and quality of …

Go to article

Completing Single-Cell Dna Methylome Profiles Via Transfer Learning Together With Kl-Divergence, Sanjeeva Dodlapati, Zongliang Jiang, Jiangwen Sun Jul 2022

Completing Single-Cell Dna Methylome Profiles Via Transfer Learning Together With Kl-Divergence, Sanjeeva Dodlapati, Zongliang Jiang, Jiangwen Sun

Faculty Publications

The high level of sparsity in methylome profiles obtained using whole-genome bisulfite sequencing in the case of low biological material amount limits its value in the study of systems in which large samples are difficult to assemble, such as mammalian preimplantation embryonic development. The recently developed computational methods for addressing the sparsity by imputing missing have their limits when the required minimum data coverage or profiles of the same tissue in other modalities are not available. In this study, we explored the use of transfer learning together with Kullback-Leibler (KL) divergence to train predictive models for completing methylome profiles with …

Go to article

“Not Nearly What It Used To Be”: A Mixed Methods Study On Hazing And Organizational Culture In Historically White Fraternities, Kimberly Rogers Davis Jul 2022

“Not Nearly What It Used To Be”: A Mixed Methods Study On Hazing And Organizational Culture In Historically White Fraternities, Kimberly Rogers Davis

LSU Doctoral Dissertations

Hazing is a significant concern on college campuses, especially as students continue to die following hazing incidents in student organizations. Fraternities, particularly historically White fraternities (HWFs), have been the site of many recent hazing deaths. However, fraternity and sorority life leaders and advocates often argue that the chapters where hazing tragedies occur are the minority in a broader system that offers numerous contributions to society. Rather than a fraternity or sorority problem, hazing may result from cultural influences within and around the organization. Thus, the purpose of this study is to understand how organizational culture, such as chapter culture and …

Go to article

Apparatuses, Systems, And Methods For Performing Remote Real-Time Experiments, Paulo J. Waltrich Jul 2022

Apparatuses, Systems, And Methods For Performing Remote Real-Time Experiments, Paulo J. Waltrich

College of Engineering Patents

Embodiments of the present invention include apparatuses and methods for performing remote experiments in real-time. The method includes sending requests to perform remote experiments for a desired configuration to a first and second facility. The desired configuration may include a first and second configuration. The method includes running a first remote experiment in real-time at the first facility to obtain a first output variable. The first facility may include the first configuration with a first input variable. The method includes simultaneously running a second remote experiment in real-time at a second facility to obtain a second output variable. The second …

Go to article

4d Spatio-Temporal Electric Field Characterization Of Ultrashort Light Pulses Undergoing Filamentation, Lana Neoričić, Christoph Jusko, Sara Mikaelsson, Chen Guo, Miguel Miranda, Shiyang Zhong, Felix Garmirian, Balazs Major, Jeffrey M. Brown, Mette B. Gaarde, Arnaud Couairon, Uwe Morgner, Milutin Kovačev, Cord L. Arnold Jul 2022

4d Spatio-Temporal Electric Field Characterization Of Ultrashort Light Pulses Undergoing Filamentation, Lana Neoričić, Christoph Jusko, Sara Mikaelsson, Chen Guo, Miguel Miranda, Shiyang Zhong, Felix Garmirian, Balazs Major, Jeffrey M. Brown, Mette B. Gaarde, Arnaud Couairon, Uwe Morgner, Milutin Kovačev, Cord L. Arnold

Faculty Publications

We present an experimental method capable of capturing the complete spatiotemporal dynamics of filamenting ultrashort laser pulses. By employing spatially resolved Fourier transform spectrometry in combination with the capability to terminate the filament at any length, we can follow the nonlinear dynamics in four dimensions, i.e. the transverse domain, time and filament length. Our method thus not only enables the full characterization of the filamentation process throughout its evolution, but also allows to identify and select laser pulses with desired parameters.

Go to article

Gis Automated Delineation And Analysis Of Cancer Service Areas In The United States, Changzhen Wang Jul 2022

Gis Automated Delineation And Analysis Of Cancer Service Areas In The United States, Changzhen Wang

LSU Doctoral Dissertations

Delineating a meaningful and reliable geographic unit pertaining to cancer care is essential in examining geographic variations in cancer care for better analysis, management, and planning. Public health researchers have devoted great efforts to defining various service areas, which; however, lack scientific rigor or are unrepresentative of the highly specialized cancer care markets, and their methods have become obsolete in the era of big data and high geo-computation. This study develops the “Spatially Constrained Leiden (ScLeiden)” method, a network community detection algorithm in Geographic Information Systems (GIS), and applies it to delineate a series of coherent cancer service …

Go to article

First Prev Next Last