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This paper deals with the adaptive control problem of Gear Transmission Servo (GTS) systems in the presence of unknown deadzone nonlinearity and viscous friction. A global differential homeomorphism based on a novel differentiable deadzone model is proposed first. Since there exist both matched and unmatched state-dependent unknown nonlinearities, a full-state feedback L1 adaptive controller is constructed to achieve uniformly bounded transient response in addition to steady-state performance. Finally, simulation results are included to show the elimination of limit cycles, in addition to demonstrating the main results in this paper.
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http://dx.doi.org/10.1016/j.isatra.2015.07.009 | DOI Listing |
Background: People with dementia who have a fall can experience both physical and psychological effects, often leading to diminished independence. Falls impose economic costs on the healthcare system. Despite elevated fall risks in dementia populations, evidence supporting effective home-based interventions remains limited.
View Article and Find Full Text PDFGenetica
September 2025
Faculty of Fisheries and Aquaculture Sciences, Universiti Malaysia Terengganu, Kuala Nerus, Terengganu, Malaysia.
Population genetics plays a critical role in creating policies for managing fisheries, conservation, and development of aquaculture. The golden snapper, Lutjanus johnii (Bloch, 1792), is a highly commercial and aquaculture important snapper species. This study used mitochondrial markers D-loop (151 specimens) and Cytochrome b (Cyt-b, 120 specimens) from 10 populations, including populations from the east South China Sea, the west South China Sea and the Strait of Malacca to investigate the genetic diversity, population connectivity, and historical demography of L.
View Article and Find Full Text PDFMol Biol Rep
September 2025
School of Arts and Sciences, Department of Natural and Applied Sciences, The American University of Iraq-Baghdad, Baghdad, Iraq.
The COVID-19 pandemic, caused by the continuously evolving SARS-CoV-2 virus, has presented persistent global health challenges. As novel variants emerge, many with enhanced transmissibility and immune evasion capabilities, concerns have intensified regarding the efficacy of existing vaccines and therapeutics. This review provides a comprehensive overview of the current landscape of COVID-19 vaccination, including the development and performance of monovalent and bivalent boosters, and examines their effectiveness against newly emerging variants of interest (VOIs) and variants under monitoring (VUMs), such as JN.
View Article and Find Full Text PDFHealth Lit Res Pract
July 2025
Kaiser Permanente Center for Health Research, Portland, Oregon.
Background: Community engagement is key to developing culturally responsive public health interventions that resonate with diverse populations and promote health equity.
Brief Description Of Activity: We applied an adapted version of Boot Camp Translation (BCT), a community-based participatory approach, to develop culturally and locally relevant messaging and materials for diverse populations. This adapted BCT approach focuses on three core themes: (1) Listen, (2) Empower, and (3) Co-Create, or LEC.
Naturwissenschaften
September 2025
Colorado Water Center, Colorado State University, Fort Collins, CO, 80523, USA.
Drought stress is the most vulnerable abiotic factor affecting plant growth and yield. The use of silicic acid as seed priming treatment is emerging as an effective approach to regulate maize plants susceptibility to water stress. The study was formulated for investigating the effect of silicic acid seed priming treatment in modulating the oxidative defense and key physio-biochemical attributes of maize plants under drought stress conditions.
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