搜索结果: 1-15 共查到“hop”相关记录67条 . 查询时间(0.078 秒)
提出了一种基于改进教与学优化（TLBO）的DVHop定位算法。通过添加修正因子来修正锚节点的平均每跳距离，减小距离估计的误差；然后引入共线性概念，减少由锚节点共线引起的定位误差；接着通过自适应选取教学因子，并且引入学员自学习策略，以加快TLBO算法的收敛速度，增强局部检测能力；将Levy飞行行为融入到TLBO中，增强种群多样性，避免TLBO算法陷入局部最优，计算出精确的定位坐标。仿真结果表明：与...
提出一种基于RSSI测距的改进DV-Hop定位算法，根据RSSI测距优化节点间的跳数，并使用校正因子修正DV-Hop算法中的平均跳距，最后，采用无约束优化算法代替传统的最小二乘法，计算未知节点的坐标，以减小误差的累计。仿真结果表明：与同类型的算法相比，提出的算法定位误差更小，能够得到更加精确的定位结果。
Multi-Hop Locks for Secure, Privacy-Preserving and Interoperable Payment-Channel Networks
smart contracts security privacy interoperability
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2018/5/28
Tremendous growth in the cryptocurrency usage is exposing the inherent scalabilty issues with the permissionless blockchain technology. Among few alternatives, payment-channel networks (PCNs) have eme...
Batched Multi-hop Multi-key FHE from ring-LWE with Compact Ciphertext Extension
multikey FHE batching BGV FHE
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2017/9/25
Traditional fully homomorphic encryption (FHE) schemes support computation on data encrypted under a single key. In STOC 2012, López-Alt et al. introduced the notion of multi-key FHE (MKFHE), which al...
Multi-Hop Distance Estimation: How Far are You?
Distance-Bounding Distance-Estimation
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2017/7/26
Several access control systems are based on the users’ physical location/proximity to the access point. Distance- Bounding (DB) protocols constitute a classical solution to calculate the distance betw...
Effect of dietary supplement of herbal extract from hop (Humulus lupulus) on pig performance and meat quality
hop extract fattening pigs carcass quality oxidative stability
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2017/6/22
The study deals with the effect of diets supplemented with a hop extract on growing pigs. Two levels of the extract (500 or 1000 mg/kg of diet) were used. Feeds either unsupplemented or supplemented w...
Predict the Multi-hop Reliability for Receiver Contention Based Routing in Dynamic Link Networks
Dynamic Link Networks Markov Chain Re- ceiver Contention Routing
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2016/1/23
We consider dynamic link networks(DLN), where nodes are static, but the links are highly dynamic. Reliable multi-hop communication is critical in such networks, which inspires receiver contention rout...
Re-encryption, functional re-encryption, and multi-hop re-encryption: A framework for achieving obfuscation-based security and instantiations from lattices
re-encryption average-case obfuscation
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2015/12/30
In this work we define multiple relaxations to the definition of
correctness in secure obfuscation. While still remaining meaningful, these
relaxations provide ways to obfuscate many primitives in a...
Worst cases for an one-hop high frequency link
ionosphere radio propagation worst cases ray-tracing
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2015/9/25
The characterisation of a HF channel by means of monthly electron density profiles can be complemented with a detailed study of radio propagation «worst cases» on situations with extremes co...
Dual-hop transmissions with fixed-gain relays over Generalized-Gamma fading channels
Journal of Telecommunications
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2015/7/15
In this paper, a study on the end-to-end performance of dual-hop wireless communication systems equipped with fixed-gain relays and operating over Generalized-Gamma (GG) fading channels is presented. ...
Potential for Non-Contact ACL Injury Between Step-Close-Jump and Hop-Jump Tasks
Stop-jump inverse dynamics shear force
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2015/5/4
This study aimed to compare the kinematics and kinetics during the landing of hop-jump and step-close-jump movements in order to provide further inferring that the potential risk of ACL injuries. Elev...
Characterisation of hop varieties grown in Romania based on their contents of bitter acids by HPLC in combination with chemometrics approach
α-acids β-acids Romanian hop cultivars Humulus lupulus principal component analysis
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2015/3/30
Reverse-phase high performance liquid chromatography technique was used for studying the evolution of bitter acids from three varieties of hop growing in Romania during the development of hop cones an...
Harmful occurrence of Rosy rustic moth (Hydraecia micacea) (Noctuidae: Lepidoptera) on hop in the Czech Republic
hatching of caterpillars weeds parasitoids harmfulness monitoring antagonist
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2015/2/2
The Rosy rustic moth (Hydraecia micacea) has been a pest of hop in Czech hop regions for a long time. It causes most severe damages in hop gardens infested by quackgrass (Elytrigia repens) on waterlog...
Chasing paper: the effects of commodification on the arts and artists of hip-hop culture
Chasing paper arts
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2014/12/10
Hip-hop culture is a young culture; however there is an abundance of literature on the culture. In particular, the commodification and commercialization of hip-hop culture is a widely studied topic; h...
Chasing paper: the effects of commodification on the arts and artists of hip-hop culture
Chasing paper commodification hip-hop culture
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2014/11/7
Hip-hop culture is a young culture; however there is an abundance of literature on the culture. In particular, the commodification and commercialization of hip-hop culture is a widely studied topic; h...