Results 31 to 40 of about 82,401 (265)

Beyond linear elasticity: Jammed solids at finite shear strain and rate [PDF]

open access: yes, 2016
The shear response of soft solids can be modeled with linear elasticity, provided the forcing is slow and weak. Both of these approximations must break down when the material loses rigidity, such as in foams and emulsions at their (un)jamming point ...
Boschan, Julia   +3 more
core   +2 more sources

Microrheology near jamming

open access: yesSoft Matter, 2023
We construct a theoretical framework of microrheology of jammed particles. We find that microrheology follows characteristic scaling laws near the jamming transition, which is equivalent to the ones in macrorheology.
Yusuke Hara   +2 more
openaire   +3 more sources

Similarities between protein folding and granular jamming. [PDF]

open access: yes, 2012
Grains and glasses, widely different materials, arrest their motions upon decreasing temperature and external load, respectively, in common ways, leading to a universal jamming phase diagram conjecture.
Andricioaei, Ioan, Jose, Prasanth P
core   +1 more source

Countermeasures for range false target jamming based on quasi Karhunen-Loève translate basis dictionary learning method

open access: yesZhongguo Jianchuan Yanjiu, 2022
ObjectivesWaveform diversity technology is an effective anti-jamming measure against range false target jamming. However, in an environment of strong energy jamming, the high side-lobe caused by the jamming signal mismatch will still affect the detection
Lexin YU   +3 more
doaj   +1 more source

Jamming Resistant Receivers for Massive MIMO

open access: yes, 2017
We design jamming resistant receivers to enhance the robustness of a massive MIMO uplink channel against jamming. In the pilot phase, we estimate not only the desired channel, but also the jamming channel by exploiting purposely unused pilot sequences ...
Björnson, Emil   +2 more
core   +1 more source

Jamming Attack Detection Algorithm Based on Statistical Analysis of Node State Transition [PDF]

open access: yesJisuanji gongcheng, 2017
Jamming attacks may cause the change of node state transition rule.Based on the statistical analysis of node state transition,this paper puts forward an improved jamming detection method.At the learning phase,the jamming detection judgment thresholds and
HU Fei,FAN Jianhua,WEI Xianglin,SUN Qin
doaj   +1 more source

A Novel Anti-Jamming Decision-Making Algorithm Based on Knowledge Graph Technology

open access: yesApplied Sciences, 2022
Wireless communications are increasingly vulnerable to malicious jamming attacks due to the inherent openness and broadcast nature. In this regard, a novel anti-jamming scheme based on knowledge graph is proposed in this paper, where the knowledge graph ...
Yingtao Niu   +3 more
doaj   +1 more source

Jamming-Aided Secure Communication in Massive MIMO Rician Channels

open access: yes, 2015
In this paper, we investigate the artificial noise-aided jamming design for a transmitter equipped with large antenna array in Rician fading channels. We figure out that when the number of transmit antennas tends to infinity, whether the secrecy outage ...
Lee, Jemin   +3 more
core   +1 more source

Jam

open access: yesM/C Journal, 2006
‘Jam’ enjoys a varied set of associations. It’s a responsive term that reflects shifts in technologies of all sorts – from the kitchen to the web and just about everything in between. Over the past century, associations of jam, jamming and being jammed have collided with and guided popular culture in innumerable ways ...
Jo Tacchi, Lawrence English
openaire   +1 more source

CAWE-ACNN Algorithm for Coprime Sensor Array Adaptive Beamforming

open access: yesSensors
This paper presents a robust adaptive beamforming algorithm based on an attention convolutional neural network (ACNN) for coprime sensor arrays, named the CAWE-ACNN algorithm.
Fulai Liu   +5 more
doaj   +1 more source

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