搜索结果: 1-15 共查到“理学 Swarm”相关记录19条 . 查询时间(0.046 秒)
基于SWARM双星观测的场向电流的经度变化
场向电流 太阳光照 地磁倾角
2019/2/27
本文利用SWARM A和C双星高精度的矢量磁场数据研究了不同季节高纬地区场向电流（FACs）随地磁经度和地方时的变化情况.研究发现：在南北半球，FACs存在明显的经度变化，南半球FACs的变化强度大约是北半球的1.2~3.2倍.利用潮汐谱分析法我们发现FACs中占主导的非迁移潮汐分量为DW2和D0.在春秋和夏季半球，DW2波更为明显.D0波可用太阳光照的经度变化来解释，向阳侧靠近磁极的经度带比远离...
MULTI-PATCHES IRIS BASED PERSON AUTHENTICATION SYSTEM USING PARTICLE SWARM OPTIMIZATION AND FUZZY C-MEANS CLUSTERING
Particle swarm optimization Fuzzy c-means Taylor’s series expansion weighted mean Hamming distance Iris recognition system
2017/6/19
Locating the boundary parameters of pupil and iris and segmenting the noise free iris portion are the most challenging phases of an automated iris recognition system. In this paper, we have presented ...
Underwater robots developed by researchers at Scripps Institution of Oceanography at the University of California San Diego offer scientists an extraordinary new tool to study ocean currents and the t...
The precursory earthquake swarm in Greece
precursors swarm seismogenesis earthquake prediction Hellenic arc
2015/9/29
The Hellenic subduction region displays the same precursory swarm phenomenon as has been found in comparable regions of New Zealand and Japan. In the earthquake catalogue of the Aristotle University o...
Long-term geomagnetic changes observed n association with earthquake swarm activities in the Izu Peninsula,Japan
Geomagnetic field tectonomagneticsm earthquake swarm total force
2015/9/28
Anomalous crustal uplift has continued since 1976 in the Izu Peninsula, Japan. Earthquake swarms have also occurred intermittently off the coast of Ito since 1978. Observations of the total intensity ...
Some possible correlations between electro-magnetic emission and seismic activity during West Bohemia 2008 earthquake swarm
Some possible correlations electro-magnetic emission seismic activity West Bohemia 2008 earthquake swarm
2014/12/31
A potential link between electromagnetic emission (EME) and seismic activity (SA) has been the subject of scientific speculations for a long time. EME versus SA relations obtained during the 2008 eart...
THE "SWARM" MODEL FOR THE AZIMUTHAL BRIGHTNESS VARIATIONS IN SATURN'S RING A
Saturn's rings. Photometry observation ring system The image calibration
2014/12/10
A number of researchers have observed asymmetric azimuthal variations in Saturn's ring A not seen in any other portion of the rings. In order to explore this effect, photometric observations of the ri...
Oklahoma earthquake swarm linked to wastewater injection wells, says study involving CU-Boulder
The earthquake Wastewater Oil Natural gas Underground strata Hydrological geology sewage
2014/7/18
The massive increase in earthquakes in central Oklahoma is likely being caused by the injection of vast amounts of wastewater from oil and gas operations into underground layers of rock, according to ...
Searching for Saturn's Dust Swarm: Limits on the size distribution of Irregular Satellites from km to micron sizes
Solar System: satellites
2011/10/8
We describe a search for dust created in collisions between the Saturnian irregular satellites using archival \emph{Spitzer} MIPS observations. Although we detected a degree scale Saturn-centric exces...
Input Parameters Optimization in Swarm DS-CDMA Multiuser Detectors
Input Parameters Optimization Swarm DS-CDMA Multiuser Detectors
2011/3/3
In this paper, the uplink direct sequence code division multiple access (DS-CDMA) multiuser detection problem (MUD) is studied into heuristic perspective, named particle swarm optimization (PSO). Rega...
Input Parameters Optimization in Swarm DS-CDMA Multiuser Detectors
Input Parameters Optimization Swarm DS-CDMA Multiuser Detectors
2011/1/4
In this paper, the uplink direct sequence code division multiple access (DS-CDMA) multiuser detection problem (MuD) is studied into heuristic perspective, named particle swarm optimization (PSO). Rega...
On the Stability of Swarm Consensus Under Noisy Control
Adaptation and Self-Organizing Systems (nlin.AO) Multiagent Systems (cs.MA)
2010/11/10
Representation of a swarm of independent robotic agents under graph-theoretic constructs allows for more formal analysis of convergence properties. We consider the local and global convergence behavio...
Swarms of insects and flocks of birds are examples of natural systems in which individual components act independently, yet together display complex collective motion. Scientists have extensively mode...
Computing Networks: A General Framework to Contrast Neural and Swarm Architectures
Computing Networks Contrast Neural General Framework Swarm Architectures
2010/4/1
Computing Networks (CNs) are defined. These are used to generalize neural and swarm architectures, namely artificial neural networks, ant colony optimization, and particle swarm optimization. The desc...
Computing Networks: A General Framework to Contrast Neural and Swarm Architectures
Computing Networks Swarm Architectures Contrast Neural
2010/4/1
Computing Networks (CNs) are defined. These are used to generalize neural and swarm architectures, namely artificial neural networks, ant colony optimization, and particle swarm optimization. The desc...