Results 81 to 90 of about 83,874 (238)
Algorithms for Unit-Disk Graphs and Related Problems
, 2023 In this dissertation, we study algorithms for several problems on unit-disk graphs and related problems. The unit-disk graph can be viewed as an intersection graph of a set of congruent disks. Unit-disk graphs have been extensively studied due to many of their applications, e.g., modeling the topology of wireless sensor networks.
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The Roman Domination Problem in Unit Disk Graphs [PDF]
, 2007 Unit disk graphs are the intersection graphs of equal sized disks in the plane, they are widely used as a mathematical model for wireless ad-hoc networks and some problems in computational geometry. In this paper we first show that the Roman domination problem in unit disk graphs is NP-hard, and then present a simple linear time approximation algorithm
Weiping Shang, Xiaodong Hu
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Advanced Science, EarlyView.The study pioneers highly conductive and mechanically robust all‐carbon electrodes using Direct Ink Writing and optimizes their chemical composition for electrochemical performance. The article describes the design of a custom redox flow battery cell to test 3D printed electrodes and discusses their potential use for vanadium redox flow batteries in ...
Pablo Rodríguez Lagar +8 more
wiley +1 more source
Advanced Science, EarlyView.Colloidal nanoparticles self‐assembly advances towards intelligent, customized assembly through precise control of binary co‐assemblies. This review explores the evolution from monolithic to binary assemblies, highlighting how the AI‐guided programmable assembly approach has the potential to shift from passive assembly to active intelligent design.
Cancan Li +5 more
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Advanced Science, EarlyView.A novel microphysiological system that can mimic sterile or non‐sterile injury demonstrates that macrophage‐derived extracellular vesicles modulate neutrophil migratory responses to these different wound states. The model showed that resolution of inflammation through neutrophil reverse migration is driven by IL‐8 derived from extracellular vesicles ...
Kehinde Adebayo Babatunde +5 more
wiley +1 more source
Nano‐Oil‐Barrier‐Based Fluttering Triboelectric Nanogenerator
Advanced Science, EarlyView.This work proposes a wind‐driven nano‐oil‐barrier‐based fluttering triboelectric nanogenerator (NF‐TENG). A nano‐oil barrier is a simple and innovative strategy to maintain a thin lubricant layer for long‐term cycling based on commercial oil‐absorbing sheets and oil‐infusion steps, which can improve both mechanical and electrical stability of TENGs ...
Deokjae Heo +8 more
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Hardness of Liar's Domination on Unit Disk Graphs
, 2016 6 pages, 4 ...
Jallu, Ramesh K, Das, Gautam K
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Advanced Electronic Materials, EarlyView.Hygroscopic hydrogels are capable of utilizing the moisture from air, which can transfer the gaseous water to liquid by a surface phase transition. Taking advantage of this water, sustainable water production, thermal management, and electricity generation can be realized.
Yujie Du +5 more
wiley +1 more source
Advanced Energy Materials, EarlyView.Nonnoble transition‐metals (TMs) in PtCuNi/C catalysts have a dual influence in proton‐exchange membrane fuel cell cathode catalyst layer. While TMs act as a “sacrificial component” of PtCuNi/C, inhibiting Pt dissolution from the PtMx nanoparticles bearing the active sites, they promote the formation of separate catalysts and ionomer domains in the ...
Ricardo Sgarbi +16 more
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Angewandte Chemie, EarlyView.Structural interpretation and molecular dynamics simulations reveal how molecular moieties and interaction networks influence the π–π stacking structures and conformational states of lignin during dissolution and aggregation: laterally shifted in deep eutectic solvents, offset‐stacked in tetrahydrofuran, and stretched in dimethyl sulfoxide.
Xin Yue +11 more
wiley +2 more sources