Results 121 to 130 of about 4,480,634 (310)
A study of variational inequalities for set-valued mappings
Journal of Inequalities and Applications, 1999 In this paper, Ky Fan's KKM mapping principle is used to establish the existence of solutions for simultaneous variational inequalities. By applying our earlier results together with Fan–Glicksberg fixed point theorem, we prove some existence ...
Tarafdar Enayet +2 more
doaj
Advanced Intelligent Systems, EarlyView.Legged robots have advanced in environmental interaction through contact, but most works rely on fixed contact sequences. This work presents a new method based on an indirect optimization method for legged robots to automatically generate contact sequences for complex movements.
Yaowei Chen, Jie Zhang, Ming Lyu
wiley +1 more source
Planning and Control Framework for a Quadruped Robot With Changeable Configuration
Advanced Intelligent Systems, EarlyView.Multiconfiguration quadruped robots enhance adaptability by switching between mammal‐like and reptile‐like morphologies. This study presents a nonlinear constraint‐based motion planner integrated with a hierarchical whole‐body controller, enabling robust configuration switching and locomotion on complex terrains. Experiments on slopes, irregular bricks,
Guanglin Lu +5 more
wiley +1 more source
Characterizations of the solution sets of pseudoinvex programs and variational inequalities
Journal of Inequalities and Applications, 2011 A new concept of nondifferentiable pseudoinvex functions is introduced. Based on the basic properties of this class of pseudoinvex functions, several new and simple characterizations of the solution sets for nondifferentiable pseudoinvex programs are ...
Yang Xinmin, Lee Heungwing, Liu Caiping
doaj
Advanced Intelligent Systems, EarlyView.The Jump‐Enhancing Textile Suit integrates the Pneumatic Energy‐Storing Propulsion Actuator (PESPA) and the Triarticular Kinetic‐Chained Structure (TKiCS). PESPA stores elastic energy under pneumatic pressure and releases it during the propulsive phase to augment movement.
Sunghun Kim +5 more
wiley +1 more source
American Journal of Community Psychology, EarlyView.Abstract Youth participatory action research (YPAR) has been effectively used for substance use prevention. Yet, YPAR has not been evaluated for opioids, which negatively impact individuals and communities across the United States. The current study evaluated an opioid‐focused YPAR project.
Elizabeth H. Weybright +7 more
wiley +1 more source
Fixed Point Theory and Applications, 2011 We apply the variational characterization of the metric projection to prove some results about the solvability of general variational inequalities and the existence of maximum and minimum solutions to some general variational inequalities in the Hilbert
Yao Jen-Chih, Li Jinlu
doaj
International Journal of Analysis and Applications, 2020 We consider a quasistatic problem which models the contact between a deformable body and an obstacle called foundation. The material is assumed to have a viscoelastic behavior that we model with a constitutive law with long-term memory, thus at each ...
A. Ourahmoun, B. Bouderah, T. Serrar
doaj
American Journal of Community Psychology, EarlyView.Abstract Violent injuries tend to cluster together geospatially. The discriminatory housing practice of redlining undertaken by the United States federal government in the 1930s has been repeatedly linked with various contemporary community‐level disparities.
Samuel J. West +5 more
wiley +1 more source