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The harmonic drive is a new type of high-efficiency gear transmission system, widely used in precision machinery, robotics, and aerospace due to its compact structure and high transmission accuracy, and the multiple uncertain parameters in it will seriously affect its transmission performance. In this paper, the limit state functions for multiple failure modes of harmonic drive are established based on the stress-strength interference theory. Considering the hybrid uncertainties in the harmonic drive, the modified chaos control method and multiplicative dimension reduction method are coupled to solve the probabilistic and interval reliabilities continuously. The proposed model is simple and easy to implement, and the failure probabilities of different failure modes of harmonic reducers can be accurately and quickly evaluated. Furthermore, the differences in the influence of strength on different failure modes are demonstrated by the results of hybrid uncertainty analysis.
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http://www.ncbi.nlm.nih.gov/pmc/articles/PMC12370128 | PMC |
http://journals.plos.org/plosone/article?id=10.1371/journal.pone.0330569 | PLOS |
Phys Rev Lett
August 2025
University of Delaware, Department of Physics and Astronomy, Newark, Delaware 19716, USA.
Ultrafast light-driven strongly correlated antiferromagnetic insulators, such as prototypical NiO with a large Mott energy gap ≃4 eV, have recently attracted experimental attention using photons of both subgap [H. Qiu et al., Nat.
View Article and Find Full Text PDFArch Phys Med Rehabil
September 2025
James Madison University, College of Health and Behavioral Studies, Communication Sciences and Disorders, 235 Martin Luther King Jr. Way, Harrisonburg, VA 22807; Sentara Rockingham Memorial Hospital, 2010 Health Campus Drive, Harrisonburg, VA 22801.
Objective: To identify which, if any, acoustic measures are associated with swallowing safety.
Design: prospective, original research SETTING: : primarily outpatient PARTICIPANTS: : 34 adults referred for a videofluoroscopic swallowing study (VFSS) were audio-recorded completing a sustained vowel and reading a sentence before the VFSS and again after swallowing each bolus.
Interventions: none MAIN OUTCOME MEASURE(S): : Swallowing safety was initially quantified using the Penetration-Aspiration Scale (PAS) with ratings then defined dichotomously (e.
Appl Clin Inform
August 2025
Department of Occupational Therapy, Faculty of Rehabilitation Medicine, University of Alberta, Edmonton, Alberta, Canada.
The global aging population is rapidly increasing, and the prevalence of age-related cognitive conditions, such as mild cognitive impairment (MCI), is becoming more common. This condition, which represents intermediate stages between normal aging and dementia, underscores the importance of early detection and timely intervention to address the growing demand for health services. Traditional cognitive assessments have limitations, such as the consistency of results, prompting the need for innovative technology-based solutions.
View Article and Find Full Text PDFRev Sci Instrum
September 2025
Institut für Physik, Universität Osnabrück, Barbarastr. 7, 49076 Osnabrück, Germany.
An interferometer used for displacement measurement is typically adjusted to the center or another appropriate point of the interferometer fringe as a working point to yield maximum detection sensitivity and linearity. The interferometer is prone to varying misalignment in the course of measurements, most noticeable due to thermal drift affecting the interferometer dimensions. We introduce an automatic correction mechanism based on a proportional/integral (PI) control loop to remove any error in the alignment of the fiber interferometer, specifically long-term drift.
View Article and Find Full Text PDFJ Phys Condens Matter
September 2025
Mindanao State University, Marawi City, Marawi City, 9700, PHILIPPINES.
We study the dynamics and thermodynamics of a harmonically trapped colloidal particle driven by active noise with long-range memory. The active force is modeled as a stationary Gaussian process with a power-law decay, allowing us to interpolate between short- and long-time regimes by varying {the power law exponent $\alpha$}. In the overdamped setting, we derive exact solutions for the particle's position statistics and two-time correlations, and characterize how active noise affects its relaxation spectrum.
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