Results 71 to 80 of about 27,242,528 (312)

Development of point-symmetric modular legged mobile robot capable of operation after falling

open access: yesInternational Journal of Advanced Robotic Systems
This study presents a legged mobile robot based on a regular polyhedral structure that achieves a point-symmetric body configuration. The proposed framework enables dynamic allocation of manipulator roles based on a single reference vector (e.g., gravity)
Tomoya Yoshii, Yusuke Ikemoto
doaj   +1 more source

A Simple Descriptor for Solid‐State Ionic Conductors Across Chemistries

open access: yesAdvanced Materials, EarlyView.
Researchers develop a simple and transferable descriptor, distance contraction, for solid‐state ion migration across Li‐, Na‐, K‐, and Mg‐ion conductors and diverse anion chemistries. By capturing the maximum local contraction experienced by the migrating ion, the descriptor enables rapid materials screening and unifies diverse ion‐transport mechanisms.
Ramanuja Srinivasan Saravanan   +4 more
wiley   +1 more source

Biomass DNA: An Emerging Building Block for Advanced Materials

open access: yesAdvanced Materials, EarlyView.
Biomass DNA is rapidly emerging from its traditional role as a genetic blueprint to serve as a versatile abundant, highly programmable polymeric building block. This review highlights the transformation of macroscopic bulk biomass DNA into next generation of functional materials, spanning from dynamic hydrogels, sustainable bioplastics, and high ...
Yuwei Hu, Itamar Willner, Li Niu
wiley   +1 more source

A Polyhedral Approach to Network Connectivity Problems (Extended Abstract).

open access: yes, 1992
We present a polyhedral approach for the general problem of designing a minimum-cost network with specified connectivity ...
Grötschel, Martin   +2 more
core   +1 more source

Optimization of polyhedral differential inclusions and state constraints with multiple delays

open access: yesDemonstratio Mathematica
This paper presents a constructive approach to a class of optimal control problems governed by polyhedral discrete and differential inclusions subject to multiple time delays and state constraints.
Demir Sağlam Sevilay   +1 more
doaj   +1 more source

Application of Bonded-Block Models to Rock Failure Analysis

open access: yesApplied Sciences, 2023
Discrete element models are being increasingly applied to model rock failure processes. Bonded-particle models, based on circular or spherical particle systems, have been successfully used for two decades.
José V. Lemos
doaj   +1 more source

A Family of Sodium Solid‐State Electrolytes Based on the NaGaxAl1‐xCl4 Solid Solution

open access: yesAdvanced Materials Interfaces, EarlyView.
ABSTRACT Sodium‐based metal chloride solid electrolytes are promising for sodium solid‐state batteries due to their excellent oxidation stability, which, as shown for Li halides, can coexist with high ionic conductivity. To explore cationic substitution effects, we synthesized NaGaxAl1‐xCl4 (0 ≤ x ≤ 1) via ball milling and investigated structural and ...
Hao Guo, Matteo Bianchini
wiley   +1 more source

Polyhedral Lyapunov Functions with Fixed Complexity [PDF]

open access: yes
Polyhedral Lyapunov functions can approximate any norm arbitrarily well. Because of this, they are used to study the stability of Linear Time Varying and Linear Parameter Varying systems without being conservative.
Forni, F, Kousoulidis, D, ,
core   +3 more sources

Linking Polyelectrolyte Modification and Enzyme‐Catalyzed Phenolic Acid Functionalization of Cellulose Fiber for Functional Foams

open access: yesAdvanced Materials Technologies, EarlyView.
Cellulose fibers functionalized using cationic poly(Dimethyldiallylammonium chloride) (polyDADMAC) and laccase‐mediated ferulic acid system are processed into foams using different surfactants (Anionic, cationic, and non‐ionic). Fiber–surfactant interactions influence foam stabilization and porous structure formation during convective drying, producing
Abirami Senthil   +4 more
wiley   +1 more source

Counterexample-guided computation of polyhedral Lyapunov functions for hybrid systems

open access: yes, 2022
This paper presents a counterexample-guided iterative algorithm to compute convex, piecewise linear (polyhedral) Lyapunov functions for uncertain continuous-time linear hybrid systems. Polyhedral Lyapunov functions provide an alternative to commonly used
Berger, Guillaume O.   +1 more
core  

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