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Association of climate variability modes with concurrent droughts and heatwaves in India
Published 2025-01-01“…This study explores this association by demonstrating how concurrent droughts and heatwaves (CDHW) in India are temporally and spatially connected to multiple global teleconnections (referred to as climate variability modes). Composite and wavelet coherence analyses are implemented for the univariate evaluation of droughts and heatwaves—measured using the standardized precipitation index (SPI) and the standardized heat index (SHI), respectively—in relation to the climate variability modes. …”
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Electromechanical Resonant Ice Protection Systems Using Extensional Modes: Optimization of Composite Structures
Published 2025-03-01“…The final objective of this paper is to establish the design rules for a composite leading edge de-icing system. For this purpose, an incremental approach will be used on profiles with different radii of curvature: plate or beam (infinite radius), circular profile (constant radius), NACA profile (variable radius). …”
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Non-Singular Fast Terminal Composite Sliding Mode Control of Marine Permanent Magnet Synchronous Propulsion Motors
Published 2025-05-01“…This strategy integrates the system’s state variables and the power function of the sliding mode surface into the traditional exponential reaching law, not only enhancing the sliding mode reaching rate but also effectively mitigating system chattering. …”
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RESEARCH ON SPEED AND PRESSURE CONTROL STRATEGY OF STABLE SWITCH ABOUT FOREPOLING EQUIPMENT
Published 2017-01-01Subjects: Get full text
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ALGORITHM FOR OPTIMIZING THE COMBUSTION PROCESS OF ASSOCIATED PETROLEUM GAS IN THERMAL POWER PLANTS, TAKING INTO ACCOUNT THE VARIABILITY OF ITS COMPOSITION
Published 2017-12-01“…These changes lead to the violation of the combustion optimal mode in thermal power plants. This article presents the algorithm of combustion optimization of hydrocarbon fuels variable composition, in particular of associated petroleum gas. …”
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Influence of interface sawtooth angle on the shear behavior of cement mortar coal composite structure
Published 2025-01-01“…Abstract The influence of interface morphology is of great importance on the shear behavior of the cement mortar-coal composite structure (CCCS) widely distributed in underground mines. …”
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The Optimization Design of Variable Valve Parameters for Internal Combustion Engines Considering the Energy Consumption of a Composite Electromagnetic Valve Mechanism
Published 2025-03-01“…Meanwhile, an efficient and economical operational mode for the variable valve mechanism was obtained, providing new insights for the development of variable valve timing technology.…”
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Refined equations and buckling modes under four-point bending loading of the sandwich test specimen with composite facing layers and a transversely flexible core
Published 2022-12-01“…A refined geometrically nonlinear theory of sandwich plates and shells with a flexible soft core and composite facing layers having low shear and compressive stiffness was introduced. …”
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Numerical simulation study on the evolution of wrinkling defects in carbon fiber laminates based on spatial decomposition damage variable method
Published 2025-04-01“…Firstly, the maximum stress and Puck failure criteria were used to predict the intralaminar damage initiation, and the damage variables were calculated in combination with the mixed-mode damage evolution law. …”
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LINEAR PULSATION CHARACTERISTICS OF MIRA VARIABLE STARS
Published 2003-12-01“…The chemical composition of all models is (X,Z) = (0.7,0.02). From the result of this study, linear relations on Luminosity-Period-Mass relationship and luminosity-period-radius-mass relationship have been derived for the fundamental mode. …”
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Variable Sound Insulation Structure with MFC Elements
Published 2013-10-01“…One of the possible opportunities to extend the field of applications of active noise reduction systems is using active structures of variable sound insulation. The paper presents an analysis of ways of reducing noise with a structure of variable sound insulation consisting of a metal plate, active elements (Macro Fiber Composite), and a control system. …”
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Experimental Investigation on Static Performance of Novel Precast Concrete Composite Slab–Composite Shear Wall Connections
Published 2025-06-01“…The connection zones between precast concrete composite slabs and composite walls commonly experience severe reinforcement conflicts due to protruding rebars, significantly reducing construction efficiency. …”
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Sliding mode control of permanent magnet synchronous motor based on improved extended state observer
Published 2024-02-01“…To improve the robustness of permanent magnet synchronous motor (PMSM) servo system, a composite controller based on the combination of improved expanded state observer (ESO) and sliding mode control (SMC) was proposed. …”
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Modulation of the lunar semidiurnal tide in GNSS TEC by the variable Earth-Moon distance
Published 2025-05-01“…Analytical equations of tidal wave theory show that the lunar tidal wave modes (2,2), (2,3), (2,4) require travel times of 2.5 days, 2.2 days, and 2.8 days from 0 km to 105 km altitude, depending on their vertical group velocities profile (assuming a constant temperature profile of 250 K). …”
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Optimizing Beam Stiffness and Beam Modal Response with Variable Spacing and Extrusion (VaSE)
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Effect of Oak Wood Aging on Chemical Composition of Wheat Distillate
Published 2025-03-01“…The thermal treatment mode and extraction time were variables. The authors developed a set of express methods to define the composition of volatile organic impurities and the ionic composition of grain distillates. …”
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