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Estimates Of The Numerical Radius Utilizing Various Function Properties, Vuk Stojiljkovic, Mehmet Gürdal Jan 2025

Estimates Of The Numerical Radius Utilizing Various Function Properties, Vuk Stojiljkovic, Mehmet Gürdal

Turkish Journal of Mathematics

Numerous inequalities of the vector and numerical radius types have been found. We achieved several extensions of the well-known numerical radius type inequalities by using the function [[EQUATION]] described in the publication by Stojiljkovi\'{c} and Dragomir in [30] and convexity characteristics with standard operator theory approaches. In particular, the following integral type numerical radius inequality has been obtained, that is [[EQUATION]]


Nearly Toric Varieties Of Type A, Mahi̇r Bi̇len Can, Nestor Fernando Diaz Morera Jan 2025

Nearly Toric Varieties Of Type A, Mahi̇r Bi̇len Can, Nestor Fernando Diaz Morera

Turkish Journal of Mathematics

A notion of a nearly toric variety is introduced. The examples of nearly toric varieties in the context of Schubert varieties are discussed. In particular, combinatorial characterizations of the smooth and singular nearly toric Schubert varieties are found. Furthermore, the counts and generating series are determined. Additionally, a connection between Dyck paths and a certain family of nearly toric Schubert varieties is established.


Advances And Trends Of Modern And Contemporary Research On The Geology Of Coal-Measure Minerals In China, Qin Yong Jan 2025

Advances And Trends Of Modern And Contemporary Research On The Geology Of Coal-Measure Minerals In China, Qin Yong

Coal Geology & Exploration

Background Coal-measure minerals (CMMs) play a significant role in ensuring the safe supply of mineral resources in China. Reviewing the advances and trends of research on the geology of CMMs in China holds great historical significance and practical value while potentially providing some insights into subsequent research. Advances Based on textual research and the analysis of logical relations, this study generalized the advances in research on the geology of CMMs in China into four aspects. (1) Increasingly improved geological theory system of CMMs: China’s classic theoretical system of coal field geology was formed in the second half of the 20th …


Prospects For Mine Geological Work In The Intelligence Age: Architecture Of The Intelligent Geological Guarantee Technology System For Mine Exploitation, Xia Yucheng, Sun Xueyang, Miao Lintian, Guo Chen, Du Rongjun Jan 2025

Prospects For Mine Geological Work In The Intelligence Age: Architecture Of The Intelligent Geological Guarantee Technology System For Mine Exploitation, Xia Yucheng, Sun Xueyang, Miao Lintian, Guo Chen, Du Rongjun

Coal Geology & Exploration

Background and Significance In response to the serious challenges posed by the goals of peak carbon dioxide emissions and carbon neutrality, the intelligentization of coal mines is an inevitable course and a significant sign of the high-quality, sustainable development of the coal industry in the New era. Mine geological work, providing geological foundation and guarantee for underground coal mining, plays an increasingly significant role in the transformation and upgrading of the coal industry for high-quality development. Constructing an intelligent geological guarantee technology system for coal mining by combining mine geology with artificial intelligence (AI) can provide a comprehensive, whole-process geological …


Gas Drainage And Utilization In Coal Mines In China: History, Technological Advances, And Prospects, Li Guofu, Li Chao, Zhang Bichuan, Xu Yun, Wang Zheng, Zhou Xianjun Jan 2025

Gas Drainage And Utilization In Coal Mines In China: History, Technological Advances, And Prospects, Li Guofu, Li Chao, Zhang Bichuan, Xu Yun, Wang Zheng, Zhou Xianjun

Coal Geology & Exploration

Objective and Methods To promote the research and application of gas drainage and utilization technologies for coal mines, this study systematically summarizes the history of China’s coal mines transitioning from gas pumping to gas drainage, the accurate and effective gas drainage technologies for typical coal mining areas in China, and the latest applications of technologies related to safe gas gathering and transportation, as well as the utilization of gas with a full range of concentrations. This study aims to provide a reference for accelerating the advancement in gas drainage and utilization technologies for coal mines, achieving methane emission reduction, and …


Impacts Of Coal Fracture Roughness And Aperture On The Seepage Of Injected Water: An Experimental Study, Wang Gang, Chen Xuechang, Chen Hao, Long Qingming, Liu Yixin Jan 2025

Impacts Of Coal Fracture Roughness And Aperture On The Seepage Of Injected Water: An Experimental Study, Wang Gang, Chen Xuechang, Chen Hao, Long Qingming, Liu Yixin

Coal Geology & Exploration

Objective Water injection into coal seams is recognized as a critical technical measure for dust removal and the prevention and control of coal and gas outbursts and rock bursts in coal mines. The effectiveness of this measure is significantly influenced by the morphological characteristics of fractures, such as their roughness and aperture. Methods This study prepared coal samples containing fractures with different roughness and apertures using sandpaper and polyimide tape, calculated the fracture roughness parameters accurately using a confocal laser scanning microscope (CLSM), and tested the seepage rate of fractured coal samples. Results and Conclusions The results indicate that the …


Key Experimental Technologies And Their Development Directions For The Exploration And Production Of Deep Coalbed Methane, Yan Xia, Xu Fengyin, Xiong Xianyue, Wang Feng, Li Chunhu, Zhang Jiyuan, Xu Borui, Cheng Qianhui, Hu Xiong, Zhu Xueguang, Liang Wei, Yuan Pu, Feng Yanqing, Wei Zhenji Jan 2025

Key Experimental Technologies And Their Development Directions For The Exploration And Production Of Deep Coalbed Methane, Yan Xia, Xu Fengyin, Xiong Xianyue, Wang Feng, Li Chunhu, Zhang Jiyuan, Xu Borui, Cheng Qianhui, Hu Xiong, Zhu Xueguang, Liang Wei, Yuan Pu, Feng Yanqing, Wei Zhenji

Coal Geology & Exploration

Objective Deep coalbed methane (CBM) production enjoys advantages including rapid gas shows, high single-well yield, and continuous resource distribution, which establish deep CBM as a significant target for reserve growth and production addition of natural gas. However, the exploration and production of deep CBM are still confronted with many technical challenges, and there is a lack of studies on key experimental technologies related to the geological characteristics and engineering assessment of deep CBM reservoirs, the occurrence characteristics and production mechanisms of gas and water, the formulation of production systems, and methods for enhanced CBM recovery. Advances in Research Given the …


A Key Technology For Synergistic Backfilling Of Coal-Based Solid Waste And High-Salinity Wastewater, Dong Shuning, Yu Shujiang, Dong Xingling, Zhang Buqin, Guo Xiaoming, Wang Xiaodong, Wang Kai, Zhu Shibin, Wu Boqiang, Liu Lei Jan 2025

A Key Technology For Synergistic Backfilling Of Coal-Based Solid Waste And High-Salinity Wastewater, Dong Shuning, Yu Shujiang, Dong Xingling, Zhang Buqin, Guo Xiaoming, Wang Xiaodong, Wang Kai, Zhu Shibin, Wu Boqiang, Liu Lei

Coal Geology & Exploration

Background and Objective Limited by locations, as well as economic and technical levels, most of the coal-based solid waste is still accumulated in the form of open-air landfills without treatment, thus occupying large quantities of land resources and causing secondary pollution to the environment. The proper treatment and reduction of high-salinity wastewater (e.g., high-salinity mine water and high-salinity water from the coal chemical industry) represent a key link in the achievement of zero liquid discharge. However, existing technologies for high-salinity wastewater treatment are generally confronted with issues such as great initial investment and high operation costs of the treatment engineering. …


Spatiotemporal Evolutionary Patterns Of The Hydrochemistry Of Jurassic Conglomerate Aquifers Under The Influence Of Curtain Walls, Chen Luwang, Wu Minghui, Hou Xiaowei, Hu Yongsheng, Zhang Miao, Cai Xinyue, Yin Xiaoxi, Shi Xiaoping Jan 2025

Spatiotemporal Evolutionary Patterns Of The Hydrochemistry Of Jurassic Conglomerate Aquifers Under The Influence Of Curtain Walls, Chen Luwang, Wu Minghui, Hou Xiaowei, Hu Yongsheng, Zhang Miao, Cai Xinyue, Yin Xiaoxi, Shi Xiaoping

Coal Geology & Exploration

Objective Curtain walls, recognized as a primary project for the prevention and control of water disasters in coal mines, will change the dynamic field of groundwater. Furthermore, their dissolution will affect the chemical field of groundwater, leading to variations in its hydrochemical composition. Methods This study investigated the Jurassic conglomerate aquifers in the Zhuxianzhuang Coal Mine, Huaibei coal field. Based on the statistics of conventional hydrochemical composition, Piper diagrams, ion combination proportions, and principal component analysis (PCA), this study explored the impacts of curtain walls on the hydrochemistry of the aquifers and determined the spatiotemporal hydrochemical evolutionary patterns under the …


Characteristics Of Cenozoic Volcanic Edifices In The Pingnan Area, Xihu Sag, Sun Naiquan, Jiang Donghui, Pan Jie, Gao Yang, Pu Renhai, Dong Xinxu Jan 2025

Characteristics Of Cenozoic Volcanic Edifices In The Pingnan Area, Xihu Sag, Sun Naiquan, Jiang Donghui, Pan Jie, Gao Yang, Pu Renhai, Dong Xinxu

Coal Geology & Exploration

Significance Igneous rocks are well-developed in the southern Pinghu slope zone, Xihu Sag, East China Sea Shelf Basin. In this zone, the increased local geotemperature caused by magmatic activity produced significant impacts on the thermal evolution of source rocks and the formation of secondary pores in sandstone reservoirs and also serves as a significant indicator of regional tectonic movements, thus holding great significance for understanding the regional geological history. Objective and Methods This study aims to determine the formation stages and distribution patterns of igneous rocks as the cap rocks in the southern Pinghu slope zone. Using previous study results …


Managing Usda Wildfire Crisis Strategy Landscapes In The Intermountain West (Region 4): A Program For Training Future Forest Managers, Justin Derose Jan 2025

Managing Usda Wildfire Crisis Strategy Landscapes In The Intermountain West (Region 4): A Program For Training Future Forest Managers, Justin Derose

Funded Research Records

No abstract provided.


Career: The Behavioral, Hormonal, And Neural Basis Of Coyote Monogamy, Sara M. Freeman Jan 2025

Career: The Behavioral, Hormonal, And Neural Basis Of Coyote Monogamy, Sara M. Freeman

Funded Research Records

No abstract provided.


Assessment Of Surgical Outcomes And Factors Affecting Vision After Cataract Surgery: A Cross-Sectional Prospective Study At Al-Zubair General Hospital, Basrah, Iraq, Maytham Neamah, Zainab Taher Jan 2025

Assessment Of Surgical Outcomes And Factors Affecting Vision After Cataract Surgery: A Cross-Sectional Prospective Study At Al-Zubair General Hospital, Basrah, Iraq, Maytham Neamah, Zainab Taher

Iraqi National Journal of Medicine

Background: Cataract is the most common elective and ambulatory procedure globally, and its incidence continues to rise, leading to an increasing number of cataract surgeries aimed at eliminating the burden of cataract blindness in the aging population. Cataract surgery is safe, predictable, and cost-effective. Aim: This study aimed to evaluate the surgical visual outcomes and factors influencing vision in patients who underwent cataract surgery in the Al-Zubair district, Basrah, Iraq. Methods: A cross-sectional prospective study was conducted on cataract surgeries of all ages performed at Al-Zubair General Hospital between October 2014 and November 2022. Data based on demographic characteristics, preoperative …


Generalized Anxiety Disorders Among The Adult Population In Basra During The Covid-19 Pandemic, Raya Habeeb Abdulimam, Elaf Mohemmed Saleh, Ikram M. Abbas Jan 2025

Generalized Anxiety Disorders Among The Adult Population In Basra During The Covid-19 Pandemic, Raya Habeeb Abdulimam, Elaf Mohemmed Saleh, Ikram M. Abbas

Iraqi National Journal of Medicine

Background: Anxiety disorders encompass conditions characterized by excessive fear and anxiety, along with related behavioral disturbances. During epidemics, many individuals experience distress due to immediate health impacts and feelings of loneliness; however, others fear infection, death, or the loss of loved ones. The COVID-19 pandemic in Iraq, part of the global coronavirus disease 2019 outbreak, may have exacerbated anxiety disorders among patients and their families. Aim: This study aims to assess the psychological impact of the COVID-19 pandemic on the adult population in Basra. Methods: A cross-sectional community-based study was conducted using an online survey with a questionnaire available via …


Awareness Of Health Matters Related To Pregnancy: A Cross-Sectional Study Among Women Attending Primary Health Care Centers In Basra: Awareness Of Health Matters Related To Pregnancy, Zainab Alfaaz Jan 2025

Awareness Of Health Matters Related To Pregnancy: A Cross-Sectional Study Among Women Attending Primary Health Care Centers In Basra: Awareness Of Health Matters Related To Pregnancy, Zainab Alfaaz

Iraqi National Journal of Medicine

Background: Prenatal care is an effective health intervention for reducing the risk of maternal morbidity and mortality, the risk of which is significantly higher in Basra (or Iraq in general) due to ignorance compared to other regions who offer prenatal care. Aim: This study aimed to assess health awareness related to pregnancy among women visiting primary health care centers in Basra Methods: A descriptive cross-sectional study was conducted with a convenience sample of 100 women of reproductive age (15–49 years) attending three primary health care centers in Basra, selected by random sampling technique. Data analysis was performed utilize the statistical …


Knowledge Of Mothers About Neonatal Danger Signs Attending Children’S Welfare Teaching Hospital In Medical City Directorate, Baghdad, Iraq, Amna Amer, Faris Al-Lami Jan 2025

Knowledge Of Mothers About Neonatal Danger Signs Attending Children’S Welfare Teaching Hospital In Medical City Directorate, Baghdad, Iraq, Amna Amer, Faris Al-Lami

Iraqi National Journal of Medicine

Background: The first 28 days of life, known as the neonatal period, represent a critical time when infants are at the highest risk of mortality. Most neonatal deaths occur in low-income countries with inadequate healthcare systems. The World Health Organization has identified specific neonatal danger signs (NDSs) that indicate potential illness. Aim: This study aimed to assess Iraqi mothers’ understanding of neonatal risk signs in 2024 and identify factors influencing this knowledge. Method: This descriptive cross-sectional hospital-based study involved 400 mothers attending the Children’s Welfare Teaching Hospital in Baghdad from November 2023 to March 2024. Mothers who could identify at …


The Correlation Of Vitamin D3 With Biochemical Markers In Β-Thalassemia Major Patients, Wasen Alzubaidi, Mustafa Abd Almajeed Hussein, Rehab Abdulwehab Jaafer, Newal Khalil Al-Temimi Jan 2025

The Correlation Of Vitamin D3 With Biochemical Markers In Β-Thalassemia Major Patients, Wasen Alzubaidi, Mustafa Abd Almajeed Hussein, Rehab Abdulwehab Jaafer, Newal Khalil Al-Temimi

Iraqi National Journal of Medicine

Background: Vitamin D3 is essential for pediatric development and normal growth. Aim: This study aims to analyze the hematological characteristics of both β-thalassemia patients and controls; their liver and renal functions; and calcium, phosphorus, and parathyroid hormone levels and their correlation with vitamin D3. Methods: Ninety teenage subjects, comprising 45 patients with β-thalassemia major (selected from the Hereditary Blood Diseases Center in Basrah during their regular checkups) and 45 apparently healthy individuals selected from relatives and friends, aged between 12 to 15 years (42.2% males and 57.8% females) were included in a 2023 case-control study at the Hereditary Blood Diseases …


2025-01-15 Seahawks Coach Looks Toward Future As Season Wraps, Kevin Ruiz Jan 2025

2025-01-15 Seahawks Coach Looks Toward Future As Season Wraps, Kevin Ruiz

The Spectator Online

No abstract provided.


January 15, 2025, Faculty, Illinois Wesleyan University Jan 2025

January 15, 2025, Faculty, Illinois Wesleyan University

2024-2025

No abstract provided.


Spherical And Sessile Droplet Dynamics By Fluctuating Hydrodynamics, John B. Bell, Andrew Nonaka, Alejandro L. Garcia Jan 2025

Spherical And Sessile Droplet Dynamics By Fluctuating Hydrodynamics, John B. Bell, Andrew Nonaka, Alejandro L. Garcia

Faculty Research, Scholarly, and Creative Activity

We simulate the mesoscopic dynamics of droplets formed by phase-separated fluids at nanometer scales where thermal fluctuations are significant. Both spherical droplets fully immersed in a second fluid and sessile droplets which are also in contact with a solid surface are studied. Our model combines a Cahn-Hilliard formulation with incompressible fluctuating hydrodynamics; for sessile droplets, the fluid-solid contact angle is specified as a boundary condition. Deterministic simulations with an applied body force are used to measure the droplets' mobility from which a diffusion coefficient is obtained using the Einstein relation. Stochastic simulations are independently used to obtain a diffusion coefficient …


Social Media And Democracy In The Digital Era: “Desak Anies” Capturing The Hearts Of Young People’S Participation In Social Media, Teguh Satria, Dian Eka Rahmawati Jan 2025

Social Media And Democracy In The Digital Era: “Desak Anies” Capturing The Hearts Of Young People’S Participation In Social Media, Teguh Satria, Dian Eka Rahmawati

Jurnal Wacana Politik

This research aims to analyse the ‘Desak Anies’ political campaign strategy run by Anies Baswedan in the 2024 Indonesian General Election, focusing on the use of social media and direct interaction to increase young voter engagement. This research uses a qualitative method with a case study approach. Data collection was conducted through analysis of mass media sources, literature reviews, and interactions on Twitter social media, which were then processed using Nvivo 12 Plus software. The data analysis technique in this study uses an interactive model technique developed by Miles, Huberman, & Saldaña which consists of three stages, namely data reduction, …


Photolysis And Sublimation Chemistry Of Ammonium Cyanide With Relevance To Cometary Environments, O. H. Wilkins, K. M. Yocum, Vincent J. Esposito, E. Harel, S. N. Milam, P. A. Gerakines Jan 2025

Photolysis And Sublimation Chemistry Of Ammonium Cyanide With Relevance To Cometary Environments, O. H. Wilkins, K. M. Yocum, Vincent J. Esposito, E. Harel, S. N. Milam, P. A. Gerakines

Biology, Chemistry, and Environmental Sciences Faculty Articles and Research

Bulk nitrogen is depleted in solar system objects, including the terrestrial planets, chondritic meteorites, and comets. Recently, it was suggested that cometary nitrogen may be locked up in ammonium salts—ionic solids comprising ammonia (NH3) and an acid such as hydrogen cyanide (HCN)—based on Rosetta/ROSINA data from comet 67P/Churyumov–Gerasimanko. Among the proposed salts to have been found in 67P were ammonium cyanide (NH4CN) and ammonium cyanate (NH4OCN), which were inferred from identifying HCN, cyanamide (NH2CN), and isocyanic acid (HNCO) in the mass spectrometry data collected in the coma of 67P. However, the relationship …


Eng 3001-001 Advanced Composition, Robert Martinez Jan 2025

Eng 3001-001 Advanced Composition, Robert Martinez

Spring 2025

No abstract provided.


Rainbow Road To Prismatic Playwriting: Black Women's Dramatic Praxis In Practice, Taren Wilson Jan 2025

Rainbow Road To Prismatic Playwriting: Black Women's Dramatic Praxis In Practice, Taren Wilson

LSU Doctoral Dissertations

This dissertation explores the lived experiences of Black women in academia, uplifting those interested in non-traditional or creative scholarship. Underrepresentation and attrition due to exclusionary academic practices is a systemic problem. What can Black feminist playwriting as research do for Black women in academia hoping to resist and connect to themselves and their community? What can playwriting as a Black woman doctoral student elucidate about the utility of playwriting as research, culturally informed epistemologies, and African American women's drama? By merging African American women's drama, Black feminist epistemologies, Practice as Research, and playwriting as research, I developed an onto-epistemological method …


Detection Of Elder Abuse Through Emergency Care Technicians Screening Tool Revision For Home-Based Primary Care (Detect-Rpc): A Cluster Randomised Controlled Trial Study Protocol, Kristin Lees Haggerty Jan 2025

Detection Of Elder Abuse Through Emergency Care Technicians Screening Tool Revision For Home-Based Primary Care (Detect-Rpc): A Cluster Randomised Controlled Trial Study Protocol, Kristin Lees Haggerty

Faculty, Staff and Student Publications

Introduction: The annual prevalence of elder mistreatment (EM) in cognitively intact older adults is estimated to be 11%, yet the annual prevalence in older adults with Alzheimer's disease and related dementias (AD/ADRD) is estimated to be as high as 75%. Associated with a decrease in quality of life and increase in risk of mortality, EM represents a significant public health burden. Home-based primary care (HBPC) providers are uniquely positioned to address the critical need for robust EM screening and reporting, especially among individuals with AD/ADRD. This protocol seeks to adapt the Detection of Elder mistreatment Through Emergency Care Technicians (DETECT) …


Ocean Crustal Veins Record Dynamic Interplay Between Plate-Cooling-Induced Cracking And Ocean Chemistry, Aled D. Evans, Rosalind M. Coggon, Michelle Harris, Elliot J. Carter, Elmar Albers, Gilles M. Guérin, Thomas M. Belgrano, Mallika Jonnalagadda, Lewis J.C. Grant, Pamela D. Kempton, David J. Sanderson, James A. Milton, Timothy J. Henstock, Jeff C. Alt, Damon A.H. Teagle Jan 2025

Ocean Crustal Veins Record Dynamic Interplay Between Plate-Cooling-Induced Cracking And Ocean Chemistry, Aled D. Evans, Rosalind M. Coggon, Michelle Harris, Elliot J. Carter, Elmar Albers, Gilles M. Guérin, Thomas M. Belgrano, Mallika Jonnalagadda, Lewis J.C. Grant, Pamela D. Kempton, David J. Sanderson, James A. Milton, Timothy J. Henstock, Jeff C. Alt, Damon A.H. Teagle

School of Geography, Earth and Environmental Sciences

As ocean crust traverses away from spreading ridges, low-temperature hydrothermal minerals fill cracks to form veins, transforming the physical and chemical properties of ocean crust whilst also modifying the composition of seawater. Vein width and frequency observations compiled from the International Ocean Discovery Program (IODP) South Atlantic Transect (∼31°S) and previous scientific ocean drilling holes show that vein width distributions progressively broaden and observed strain (Σmveins/mcore) increases with crustal age, whereas vein densities (#veins/mcore) remain approximately constant. Elemental mapping and textural observations illuminate multiple precipitation and fracturing episodes that continue as the …


Improving Rupture Status Prediction For Intracranial Aneurysms Using Wall Shear Stress Informatics, Jingfeng Jiang, Mostafa Rezaeitaleshmahalleh, Jinshan Tang, Joseph Gemmette, Aditya Pandey Jan 2025

Improving Rupture Status Prediction For Intracranial Aneurysms Using Wall Shear Stress Informatics, Jingfeng Jiang, Mostafa Rezaeitaleshmahalleh, Jinshan Tang, Joseph Gemmette, Aditya Pandey

Michigan Tech Publications

BACKGROUND: Wall shear stress (WSS) plays a crucial role in the natural history of intracranial aneurysms (IA). However, spatial variations among WSS have rarely been utilized to correlate with IAs' natural history. This study aims to establish the feasibility of using spatial patterns of WSS data to predict IAs' rupture status (i.e., ruptured versus unruptured). METHODS: "Patient-specific" computational fluid dynamics (CFD) simulations were performed for 112 IAs; each IA's rupture status was known from medical records. Recall that CFD-simulated hemodynamics data (wall shear stress and its derivatives) are located on unstructured meshes. Hence, we mapped WSS data from an unstructured …


Associations Between Social Determinants Of Health And Mental Health Disorders Among U.S. Population: A Cross-Sectional Study, S. Tanarsuwongkul Jan 2025

Associations Between Social Determinants Of Health And Mental Health Disorders Among U.S. Population: A Cross-Sectional Study, S. Tanarsuwongkul

Faculty Publications

Aims

The impact of social determinants of health (SDOH) on mental health is increasingly realized. A comprehensive study examining the associations of SDOH with mental health disorders has yet to be accomplished. This study evaluated the associations between five domains of SDOH and the SDOH summary score and mental health disorders in the United States.

Methods

We analyzed data from a diverse group of participants enrolled in the All of Us research programme, a research programme to gather data from one million people living in the United States, in a cross-sectional design. The primary exposure was SDOH based on Healthy …


The Effectiveness Of Verbal Instruction For Reducing Anterior Cruciate Ligament Injury Risk, Kazuna Ichikawa, Hironobu Kuruma, Sian Knott Jan 2025

The Effectiveness Of Verbal Instruction For Reducing Anterior Cruciate Ligament Injury Risk, Kazuna Ichikawa, Hironobu Kuruma, Sian Knott

Asian Journal of Physical Therapy

Background: Anterior cruciate ligament (ACL) injuries are serious for athletes because healing can take approximately 6–12 months. Some studies have suggested that verbal instruction can help reduce the incidence of ACL injuries. Verbal instruction is divided into two categories: internal focus (IF) verbal instruction and external focus (EF) verbal instruction; however, the optimal type of ACL instruction to prevent injury is unknown. No verbal instructions explicitly focus on the pelvis or trunk, even though proximal control or ACL injury prevention are considered significant. This study aimed to determine whether IF verbal instruction focused on proximal control of the trunk and …


Age-Related Balance Control Changes In Constrained-Speed Gait During A Concurrent Cognitive Task, Raymond Chong, Victoria Moore, Hope Brown Sampson, Heather Spears, Manh-Cuong Do Jan 2025

Age-Related Balance Control Changes In Constrained-Speed Gait During A Concurrent Cognitive Task, Raymond Chong, Victoria Moore, Hope Brown Sampson, Heather Spears, Manh-Cuong Do

Asian Journal of Physical Therapy

Background: During walking, the center of mass (CoM) oscillates up and down in the sagittal plane. In the late-stance phase, as the CoM descends, its vertical velocity decreases before foot contact, indicating active neural balance control, which we refer to as CoM braking. Young adults tend to increase braking while maintaining step length and speed when performing a cognitive task, such as subtracting numbers. In contrast, older adults maintain consistent braking by reducing step length and speed. This study examined the effects of walking at constant self-selected, slower, or faster speeds on CoM braking and cognitive performance. Methods: Healthy young …