Results 41 to 50 of about 1,164,049 (249)
The Singularity in Generic Gravitational Collapse Is Spacelike, Local, and Oscillatory [PDF]
, 1998 A longstanding conjecture by Belinskii, Khalatnikov, and Lifshitz that the singularity in generic gravitational collapse is spacelike, local, and oscillatory is explored analytically and numerically in spatially inhomogeneous cosmological spacetimes ...
B. K. BERGER +9 more
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Study on six‐phase PMSM control strategy based on improved position sensorless detection technology
IET Power Electronics, 2021 The six‐phase motor control system has low torque ripple, low harmonic content, and high reliability; therefore, it is suitable for electric vehicles, aerospace and other applications requiring high power output and reliability.
Hanying Gao +3 more
doaj +1 more source
Spatial Externalities of Income Inequality on Security in Latin America
Mathematics, 2021 The aim of this research is to analyse the effect of income inequality on the homicide rate. The study is carried out in 18 Latin American countries for the period 2005–2018.
Pablo Ponce +3 more
doaj +1 more source
IET Control Theory & Applications, 2021 In this paper, a novel trajectory tracking control method of nonholonomic mobile robots based on the non‐negative piecewise predefined‐time theorem is proposed.
Lixiong Lin +5 more
doaj +1 more source
Frontiers in Psychology, 2016 Recent research has shown close links between spatial and mathematical thinking and between spatial abilities and motor skills. However, longitudinal research examining the relations between motor, spatial, and mathematical skills is rare, and the nature
Andrea eFrick, Wenke eMöhring
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IET Control Theory & Applications, 2021 Autonomous underwater vehicles require a motion control system for performing underwater tasks such as exploring and developing marine resources. This study proposes a fractional‐order proportional‐integral (PIλ) controller for autonomous underwater ...
L. Liu, L. Zhang, S. Zhang
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Vegetation and Topographic Control on Spatial Variability of Soil Organic Carbon
Pedosphere, 2013 Abstract Soil organic carbon (SOC) is one of the most important parameters affecting the hydraulic characteristics of natural soils. Despite being rather easy to measure, SOC is known to be highly variable in space. In this study, vegetation, climate, and morphology factors were used to reproduce the spatial distribution of SOC in the mineral ...
OUESLATI, INES +3 more
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IET Intelligent Transport Systems, 2022 To improve the platoon's passability and traffic efficiency, a cooperative lane change approach is proposed when the platoon encounters a slow obstacle vehicle ahead in this paper.
Guangming Nie +3 more
doaj +1 more source
IET Control Theory & Applications, 2021 This paper presents the novel design of an ambidextrous robot arm that offers double range of motion as compared to dexterous arms. The arm is unique in terms of design (ambidextrous feature), actuation (use of two different actuators simultaneously ...
Mashood Mukhtar +2 more
doaj +1 more source
Assessment of Temperature and Elevation Controls on Spatial Variability of Rainfall in Iran [PDF]
Atmosphere, 2017 With rainfall changes, hydrological process variability increases. This study predicts the potential effects of temperature and topography characteristics on rainfall spatial variability. Temperature and topography were considered as two effective factors that may influence monthly rainfall.
openaire +2 more sources