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Suggested Topics within your search.
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781
Neurocardiac signatures of acute mental stress: a sex-comparative study
Published 2025-08-01“…Twenty-five volunteers performed time-constrained mental arithmetic tasks under stress, amplified by workspace noise and negative feedback.ResultsResponse-locked heart rate (HR) data revealed a parasympathetic deceleration at response onset, followed by sympathetic rebound, with deeper HR dips linked to higher stress levels. …”
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782
Study of the wheel eccentric load mechanism in hydraulic engineering vehicles and improvement measures
Published 2025-03-01“…This model was employed to analyze the variation patterns of wheel eccentric load in relation to tractive force and the corresponding effect on the rate of wheel load reduction. …”
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783
Dynamic mechanical properties of nanoparticle-stabilized foam concrete (NFC)
Published 2025-07-01“…In this study, the Split Hopkinson Pressure Bar (SHPB) system was employed to investigate and quantify mechanical properties of NFC with two dry densities of 980 and 1330 kg/m³ under dynamic compression with strain rates up to 240 s−1. Specifically, the failure progress, failure patterns, stress-strain curves, dynamic compressive strength and energy absorption were analysed and compared. …”
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784
GraphFedAI framework for DDoS attack detection in IoT systems using federated learning and graph based artificial intelligence
Published 2025-08-01“…This integration also ensures system scalability, as FL adapts training based on localized network topology.The system is evaluated using the CIC-IoT-2023 dataset, demonstrating its effectiveness in achieving high detection accuracy, low false positive rates, and strong resilience under dynamic IoT conditions.…”
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785
Statistical analysis of disability: Utilizing the modified kies power unit inverse Lindley model
Published 2025-07-01“…The MKPUILD is very flexible model because it’s probability density function and hazard rate function have different shapes as unimodal, right-skewed, left-skewed, bathtub, increasing, N-shaped. …”
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786
Quantifying Mental Stress Using Cardiovascular Responses: A Scoping Review
Published 2025-07-01“…This review highlights the application of time series techniques, such as autoregressive integrated moving average (ARIMA), detrended fluctuation analysis, and autocorrelation plots, to study heart rate rhythm or patterns associated with mental stress. …”
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787
Attribution analysis of water-sediment variation under the influence of climate change and human activities in the Kuye River Basin
Published 2024-11-01“…To understand the change patterns of water and sediment in the Kuye River Basin and provide scientific basis for water resources management and ecological protection under the impacts of climate change and human activities, based on hydrological and meteorological observation data, NDVI (normalized difference vegetation index), and land use change data, this study quantitatively analyzed the trends of water and sediment changes in the basin and their attributed influences using the Mann-Kendall non-parametric test, double mass curve method, cumulative anomaly analysis, sliding rank-sum test, and cumulative quantity slope change rate analysis. …”
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788
Acute Physiological and Perceptual Responses to Six Body-Weight Squat Exercise Variations
Published 2025-03-01“…This study explored the responses of heart rate (HR), muscle oxygen saturation (SmO<sub>2</sub>), and perceived exertion (RPE) during six body-weight squat exercise variations. …”
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789
Sub-activity analysis by using wristband-type wearable health devices to measure construction workers’ physical demands
Published 2025-06-01“…This study addresses this critical gap by using lightweight wearable wristbands equipped with heart rate (HR) biosensors to monitor workers’ activities without disrupting their tasks. …”
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790
Survival Outcomes in Patients after Radical Surgery for Non-Small Lung Cancer: an 8-year Study at N. N. Blokhin Cancer Research Center
Published 2021-05-01“…Survival rates of the patients after radical surgery for NSCLC also coincided with results of the previous studies. …”
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791
Association between non-insulin-based insulin resistance indicators and frailty progression: a national cohort study and mendelian randomization analysis
Published 2025-01-01“…It aimed to examine the associations of triglyceride-glucose (TyG) index, metabolic score for insulin resistance (METS-IR), estimated glucose disposal rate (eGDR) and with long-term deficit-accumulation frailty trajectories and physical function decline. …”
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792
Production capacity prediction of U-shaped horizontal wells for in-situ pyrolysis of tar-rich coal: Experimental and numerical simulation study
Published 2025-02-01“…The variation law of tar and coal gas production capacity and energy return rate were discussed. The results show that: ① Underground coal pyrolysis has the advantages of high resource abundance, clean and low-carbon gas products, and low geological risk. …”
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793
Performance Assessment for Automatic Generation Control via Dynamic Models Identified From Extracted Data Segments
Published 2025-06-01“…The problem is to estimate the ramp rate and static deviation as two AGC performance metrics from desired and generated active powers. …”
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794
Multi-scenario Load Combinatorial Optimization Based on Improved Greedy Algorithm
Published 2020-05-01“…With the gradual formation of sales side market competition pattern, the electricity companies can improve the safety level of power grid and the quality of power supply through load combinatorial optimization to improve the load rate and reduce the cost of electricity purchase on the users side, and to improve the equipment utilization rate and reduce the line loss on the power supply side. …”
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795
Research on differences and correlation between tensile, compression and flexural moduli of cement stabilized macadam
Published 2017-07-01“…The results indicate that: three moduli become larger with the increase of the loading rate, showing a power function pattern; with the shear effect considered, the flexural modulus is increased by 47% approximately over that in the current test method; the tensile and compression moduli of cement stabilized macadam are significantly different. …”
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796
Scheme of Recent Advances in the Field of Accounting and Economics: Application of Macro Accounting Theory in Economic Forecasting
Published 2020-03-01“…Every certain unemployment rate creates a certain increase in wages because wage costs represent General, administrative and sales costs. …”
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797
Provenance variation in seedling growth of Tetrapleura tetraptera (SCHUM. AND THONN.) TAUB.
Published 2023-06-01“…TAUB., a multipurpose tree, were evaluated in a completely randomized design for variation in seedling growth traits; height, collar diameter, number of leaves, biomass, relative growth rate (RGR), actual growth rate (AGR) and net assimilation rate (NAR) at nursery stage to identify suitable seed source for improved productivity. …”
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798
Case report: Biphasic autonomic response in decompression sickness: HRV and sinoatrial findings
Published 2025-04-01“…BackgroundDecompression sickness (DCS) may involve neurological and cardiovascular systems, but cardiac autonomic dysfunction is rarely documented. Heart rate variability (HRV) can provide insight into autonomic modulation in such cases, particularly when incorporating advanced nonlinear and dynamic techniques.CaseWe present a 35-year-old recreational diver who developed neurological DCS and persistent bradycardia following multiple consecutive dives. …”
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799
Crystal plasticity modeling for grain size and texture effects on laser shock clinching of ultra-thin foils
Published 2025-03-01“…This paper presents a unified crystal plasticity model for the ultra-high strain rate laser shock clinching (LSC) process of ultra-thin foils by integrating the thermal activation theory, dislocation drag effect and dislocation density evolution. …”
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800
Cardiac and Electrodermal Responses to Threats: Modulation by Childhood Sexual Abuse History
Published 2025-07-01“…The participants viewed trauma-unrelated threatening or neutral pictures while their skin conductance response and heart rate data were collected. Results: Compared with the neutral pictures, when viewing trauma-unrelated threatening pictures, the non-CSA group presented bradycardia, which is a typical cardiac response upon exposure to negative images. …”
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