Results 51 to 60 of about 21,370 (279)
LEGO‐like Origami Robots Standardize Structure Design of Soft Robots
Advanced Science, EarlyView.The paper proposes a comprehensive design framework that standardizes the soft robot development process as the assembly of LEGO‐like, off‐the‐shelf origami actuator modules. With actuators designed to accommodate thickness and an optimization‐based assembly strategy, it establishes a repeatable, systematic workflow that streamlines and accelerates ...
Zheng Wang, Yuzhe Wang, Hongying Zhang
wiley +1 more source
Multifunctional and Reprogrammable Magnetoactive Graphene Oxide Origami
Advanced Science, EarlyView.A magnetic graphene oxide film is developed that enables rapid, precise, and programmable shape morphing under magnetic actuation. The MGO sensoriactuators feature humidity‐tunable performance and integrated sensing–actuation capability. Customized origami structures can be easily created by simple cutting and folding, while reusable magnetic stickers ...
Jun Cai +5 more
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The Structure of the Critical Set in the Mountain Pass Theorem [PDF]
Transactions of the American Mathematical Society, 1987 We show that the critical set generated by the Mountain Pass Theorem of Ambrosetti and Rabinowitz must have a well-defined structure. In particular, if the underlying Banach space is infinite dimensional then either the critical set contains a saddle point of mountain-pass type, or the set of local minima intersects at least two components of the set ...
PUCCI, Patrizia, J. SERRIN
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Agribusiness, EarlyView.ABSTRACT Social tensions and resource depletion pose significant challenges to the agri‐food sector, highlighting the need for coordinated strategies to ensure sustainability in supply chains. Despite its critical importance, the relationship between coordination mechanisms and sustainability performance remains underexplored.
Carlos Moreno‐Miranda, Liesbeth Dries
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Existence and multiplicity of nontrivial solutions for poly-Laplacian systems on finite graphs
Boundary Value Problems, 2022 In this paper, we investigate the existence and multiplicity of nontrivial solutions for poly-Laplacian system on a finite graph G = ( V , E ) $G=(V, E)$ , which is a generalization of the Yamabe equation on a finite graph.
Xuechen Zhang +3 more
doaj +1 more source
Construction of a Feedback Comment Analysis Model for Evaluation of Endoscopic Surgical Skill
Annals of Gastroenterological Surgery, EarlyView.ABSTRACT Background Surgical education and skill assessments are important in improving surgical skills. However, instructors' comments tend to be complex and unorganized, with varying content and categories. This study aimed to develop a natural language processing (NLP) model to automatically classify feedback comments on surgical procedures and ...
Shusaku Iwai +7 more
wiley +1 more source
Existence and multiplicity of solutions for divergence type elliptic equations
Electronic Journal of Differential Equations, 2011 We establish the existence and multiplicity of weak solutions of a problem involving a uniformly convex elliptic operator in divergence form. We find one nontrivial solution by the mountain pass lemma, when the nonlinearity has a $(p-1)$-superlinear ...
Lin Zhao, Peihao Zhao, Xiaoxia Xie
doaj
Annals of Gastroenterological Surgery, EarlyView.ABSTRACT Background The annual number of pancreatoduodenectomies (PDs) in the United States has increased over the past decade, but the facility types driving this growth and whether outcomes have improved remain unclear. We aimed to identify characteristics of facilities with increasing PD volumes and assess national trends in centralization ...
Koichi Tomita, Naruhiko Ikoma
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A variant of mountain pass theorem
Differential and Integral Equations, 2013 An existence result for a critical point of mountain-pass type, where the classical Palais--Smale condition is not required, is presented. A multiple-critical-point result is then obtained. As an application, the existence of two positive classical solutions for two-point boundary-value problems, without assuming any asymptotic condition on the ...
Bonanno, Gabriele, D'Aguì, Giuseppina
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Piezoelectric Origami Metamaterials for Enhanced Handwriting Recognition and Trajectory Tracking
Advanced Intelligent Discovery, EarlyView.This study introduces origami metamaterials inspired by Kresling piezoelectric generators to enhance biometric authentication and handwriting trajectory recognition. Overcoming sensor limitations in conventional devices, the design enables multichannel data acquisition with fewer sensors, utilizing machine learning to accurately identify content ...
Yinzhi Jin, Ting Tan, Zhimiao Yan
wiley +1 more source