Results 61 to 70 of about 2,495,395 (314)

Bistable Mechanisms 3D Printing for Mechanically Programmable Vibration Control

open access: yesAdvanced Engineering Materials, EarlyView.
This work introduces a 3D‐printed bistable mechanism integrated into tuned mass dampers (TMDs) for mechanically adaptive passive vibration suppression. Through optimized geometry, the bistable design provides adaptable vibration reduction across a broad range of scenarios, achieving effective vibration mitigation without complex controls or external ...
Ali Zolfagharian   +4 more
wiley   +1 more source

Magnetoactive Metamaterials: A State‐of‐the‐Art Review

open access: yesAdvanced Engineering Materials, EarlyView.
Magnetoactive metamaterials combine magnetoactive composites with architected metastructures to enable contactless, tunable control of mechanical, acoustic, and elastic properties. This review highlights recent advances in their design, fabrication, and applications in soft robotics, biomedical devices, and adaptive structures and outlines future ...
Seyyedmohammad Aghamiri, Ramin Sedaghati
wiley   +1 more source

Weighted Connected Vertex Cover Based Energy-Efficient Link Monitoring for Wireless Sensor Networks Towards Secure Internet of Things

open access: yesIEEE Access, 2021
Industry 4.0 utilizes the Internet of Things (IoT) to rise the efficiency in manufacturing and automation where wireless sensor networks (WSNs) are crucial technologies for communication layer of IoT.
Zuleyha Akusta Dagdeviren
doaj   +1 more source

Adding Isolated Vertices Makes some Online Algorithms Optimal

open access: yes, 2016
An unexpected difference between online and offline algorithms is observed. The natural greedy algorithms are shown to be worst case online optimal for Online Independent Set and Online Vertex Cover on graphs with 'enough' isolated vertices, Freckle ...
A Gyárfás   +9 more
core   +1 more source

Harnessing Outer Space for Improved Electrocaloric Cooling

open access: yesAdvanced Functional Materials, EarlyView.
A novel radiative heat sink/source‐integrated electrocaloric (R‐iEC) system combines the electrocaloric (EC) effect with a thermally conductive radiative cooler (TCRC) to address heat dissipation limitations in EC devices. Utilizing outer space as a heat sink, the system achieves up to 240 W m−2 of heat dissipation performance, making it highly ...
Dong Hyun Seo   +8 more
wiley   +1 more source

Cover pebbling numbers and bounds for certain families of graphs [PDF]

open access: yes, 2004
Given a configuration of pebbles on the vertices of a graph, a pebbling move is defined by removing two pebbles from some vertex and placing one pebble on an adjacent vertex.
Watson, Nathaniel G., Yerger, Carl R.
core   +1 more source

Ideal Molecular Sieving with a Dense MOF for Helium Upgrading with Highly Diffusion Selective Mixed Matrix Membranes

open access: yesAdvanced Functional Materials, EarlyView.
The separation of Helium gas from natural gas is challenging but highly important. MIL‐116(Ga), a “non‐porous” metal–organic framework is used as a molecular sieve to separate He from CH4. Druse‐like MIL‐116(Ga) particles are integrated into polysulfone mixed matrix membranes.
Ayisha Komal   +10 more
wiley   +1 more source

A STEGENOGRAPHY IN 3D MESH BY REARRANGING THE ORDER OF VERTEX PRESENTATION

open access: yesTạp chí Khoa học Đại học Đà Lạt, 2013
This paper proposes a method of data hiding approach on 3D mesh objects in the representation domain by rearranging the order of the vertices based on a secret key string (a list vertex that was previously traversed as highly secret).
Thái Duy Quý
doaj   +1 more source

A Note on Outer-Independent 2-Rainbow Domination in Graphs

open access: yesMathematics, 2022
Let G be a graph with vertex set V(G) and f:V(G)→{∅,{1},{2},{1,2}} be a function. We say that f is an outer-independent 2-rainbow dominating function on G if the following two conditions hold: (i)V∅={x∈V(G):f(x)=∅} is an independent set of G.
Abel Cabrera-Martínez
doaj   +1 more source

Partitioning edge-coloured complete graphs into monochromatic cycles and paths

open access: yes, 2012
A conjecture of Erd\H{o}s, Gy\'arf\'as, and Pyber says that in any edge-colouring of a complete graph with r colours, it is possible to cover all the vertices with r vertex-disjoint monochromatic cycles. So far, this conjecture has been proven only for r
Alexey Pokrovskiy   +10 more
core   +1 more source

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