Results 41 to 50 of about 29,141 (271)
Limits to the Hall Effect and Other Nonreciprocal Effects in Three‐Dimensional Metamaterials
Advanced Materials, EarlyView.Comprehensive and fundamental bounds on nonreciprocal effects in three‐dimensional metamaterials are derived. They reveal that the effective Hall mobility cannot exceed the largest constituent mobility, that, under certain conditions, the Verdet constant cannot be enhanced, and that, for constituents with Hall coefficients of the same sign, the largest
Christian Kern, Graeme W. Milton
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Status of noise pollution in households of Kathua city (J&K)
Environment Conservation Journal, 2011 The present study has been carried out to assess the seasonal variations of Leq ,NC and LNP noise levels in households located at different areas of Kathua city.
R.K. Rampal, R.S. Jasrotia , S. Kotwal
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Frontiers in Psychiatry, 2022 This study aimed to validate the Persian version of the Lifetime of Experiences Questionnaire (LEQ) and examine the relationship between life experience and memory function. To this end, two studies were conducted. Study one examined the factor structure,
Hossein Karsazi +3 more
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Advanced Robotics Research, EarlyView.A codesign multiobjective optimization framework was developed to enhance the morphology and controller of a snake‐like robot driven by artificial muscles. It improved planar locomotion, agility, and power efficiency. The approach optimized link geometry and controller gains, revealing that shorter muscles near joints and longer linkages maximize ...
Ayla Valles, Mahdi Haghshenas‐Jaryani
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Advanced Robotics Research, EarlyView.Robots can learn manipulation tasks from human demonstrations. This work proposes a versatile method to identify the physical interactions that occur in a demonstration, such as sequences of different contacts and interactions with mechanical constraints.
Alex Harm Gert‐Jan Overbeek +3 more
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Echinoderm‐Inspired Autonomy for Soft‐Legged Robots
Advanced Robotics Research, EarlyView.Inspired by echinoderms, a modular soft robot achieves autonomous phototaxis without a central controller or explicit communication. Each limb independently adapts its actuation timing through local sensing and short‐term memory. Coordination emerges purely from physical interactions, demonstrating resilience to changes in morphology, environment, and ...
Harmannus A. H. Schomaker +2 more
wiley +1 more source
Block-sparse recovery and rank minimization using a weighted l p − l q $l_{p}-l_{q}$ model
Journal of Inequalities and Applications, 2023 In this paper, we study a nonconvex, nonsmooth, and non-Lipschitz weighted l p − l q $l_{p}-l_{q}$ ( 0 < p ≤ 1 $0< p\leq 1$ , 1 < q ≤ 2 $1< q\leq 2$ ; 0 ≤ α ≤ 1 $0\leq \alpha \leq 1$ ) norm as a nonconvex metric to recover block-sparse signals and rank ...
H. K. Nigam, Saroj Yadav
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Continuum Mechanics Modeling of Flexible Spring Joints in Surgical Robots
Advanced Robotics Research, EarlyView.A new mechanical model of a tendon‐actuated helical extension spring joint in surgical robots is built using Cosserat rod theory. The model can implicitly handle the unknown contacts between adjacent coils and numerically predict spring shapes from straight to significantly bent under actuation forces.
Botian Sun +3 more
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Compliant Pneumatic Feet with Real‐Time Stiffness Adaptation for Humanoid Locomotion
Advanced Robotics Research, EarlyView.A compliant pneumatic foot with real‐time variable stiffness enables humanoid robots to adapt to changing terrains. Using onboard vision and pressure control, the foot modulates stiffness within each gait cycle, reducing impact forces and improving balance. The design, cast in soft silicone with embedded air chambers and Kevlar wrapping, offers durable,
Irene Frizza +3 more
wiley +1 more source
Skew log-concavity of the Boros-Moll sequences
Journal of Inequalities and Applications, 2017 Let { T ( n , k ) } 0 ≤ n < ∞ , 0 ≤ k ≤ n $\{T(n,k)\}_{0\leq n < \infty, 0\leq k \leq n} $ be a triangular array of numbers. We say that T ( n , k ) $T(n,k)$ is skew log-concave if for any fixed n, the sequence { T ( n + k , k ) } 0 ≤ k < ∞ $\{T(n+k,k ...
Eric H Liu
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