Results 81 to 90 of about 1,052,363 (331)

Synchrotron Radiation for Quantum Technology

open access: yesAdvanced Functional Materials, EarlyView.
Materials and interfaces underpin quantum technologies, with synchrotron and FEL methods key to understanding and optimizing them. Advances span superconducting and semiconducting qubits, 2D materials, and topological systems, where strain, defects, and interfaces govern performance.
Oliver Rader   +10 more
wiley   +1 more source

Topology control based on dynamic graph embedding in Internet of vehicles

open access: yesTongxin xuebao, 2022
Objectives:With the growth of the automotive market, the road carrying pressure is increasing. However, due to the dynamics, complexity and poor communication environment of Internet of vehicles (IoV), as well as the rapidly changing distance and ...
Yanfei SUN   +5 more
doaj   +2 more sources

Clash of Civilizations or Clash of Religions?

open access: yesAmerican Journal of Islam and Society, 1994
Every phase of American foreign policy has found its supporters in American academia. The Cold War had its famous academicians who not only justified American foreign policy at that time but later became prominent decisionmakers.
Mohammed M. Karabal
doaj   +1 more source

Fractional Skyrmion Tubes in Chiral‐Interfaced 3D Magnetic Nanowires

open access: yesAdvanced Functional Materials, EarlyView.
In chiral 3D helical magnetic nanowires, the coupling between the geometric and magnetic chirality provides a way to create topological spin states like vortex tubes. Here, it is demonstrated how the breaking of this coupling in interfaced 3D nanowires of opposite chirality leads to even more complex topological spin states, such as fractional ...
John Fullerton   +11 more
wiley   +1 more source

EBS-based efficient and secure group key management in wireless sensor networks

open access: yesTongxin xuebao, 2009
To achieve the secure group communication in wireless sensor networks(WSN), a EBS-based group key management scheme was presented.First, the network topology was simplified by combining the chain-clusters and the star-clusters.Next, to prevent the ...
WANG Wei1   +3 more
doaj   +2 more sources

Pentagonal 2D Altermagnets: Material Screening and Altermagnetic Tunneling Junction Device Application

open access: yesAdvanced Functional Materials, EarlyView.
From a database of 170 pentagonal 2D materials, 4 candidates exhibiting altermagnetic ordering are screened. Furthermore, the spin‐splitting and unconventional boundary states in the pentagonal 2D altermagnetic monolayer MnS2 are investigated. A MnS2‐based altermagnetic tunneling junction is designed and, through ab initio quantum transport simulations,
Jianhua Wang   +8 more
wiley   +1 more source

Channel-Slot Aggregation Diversity Based Slot Reservation Scheme for Cognitive Radio Ad Hoc Networks

open access: yesInternational Journal of Distributed Sensor Networks, 2014
In cognitive radio (CR) ad hoc networks, spectrum efficiency and energy efficiency are vitally important because spectrum availability is opportunistic in nature and mobile CR nodes usually have limited energy.
S. M. Kamruzzaman   +3 more
doaj   +1 more source

Supergraph Topology Feature Index for Personalized Interesting Subgraph Query in Large Labeled Graphs

open access: yesComplexity, 2021
Interesting subgraph query aims to find subgraphs that are isomorphic to the given query graph from a data graph and rank the subgraphs according to their interestingness scores.
Xiaohuan Shan   +4 more
doaj   +1 more source

HSkip+: A Self-Stabilizing Overlay Network for Nodes with Heterogeneous Bandwidths

open access: yes, 2014
In this paper we present and analyze HSkip+, a self-stabilizing overlay network for nodes with arbitrary heterogeneous bandwidths. HSkip+ has the same topology as the Skip+ graph proposed by Jacob et al.
Feldotto, Matthias   +2 more
core   +1 more source

A map with topological minimal self-joinings in the sense of del Junco [PDF]

open access: yesErgodic Theory and Dynamical Systems, 1990
AbstractAndrés del Junco has proposed a definition of topological minimal self-joinings intended to parallel Dan Rudolph's measure-theoretic concept. By means of a rank-two ‘cutting and stacking’, this article constructs the first example of a system (a subshift) satisfying his proposed definition of 2-fold topological minimal self-joinings.The second ...
openaire   +2 more sources

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