简介：有时候人们会在某段时间里，仿佛有衰神附体一般，总感觉在某些方面非常的不顺，可有时候你的气场会突然发生大逆转，衰神将瞬间逃之夭夭。现在就来看看最近你在哪方面会转运？让自己掌握住成功的先机。

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简介：Satelliteconstellationdesignforspaceopticalsystemsisessentiallyamultiple-objectiveoptimizationproblem.Inthiswork,totacklethischallenge,wefirstcategorizetheperformancemetricsofthespaceopticalsystembytakingintoaccountthesystemtasks(i.e.,targetdetectionandtracking).Wethenproposeanewnon-dominatedsortinggeneticalgorithm(NSGA)tomaximizethesystemsurveillanceperformance.Paretooptimalsetsareemployedtodealwiththeconflictsduetothepresenceofmultiplecostfunctions.Simulationresultsverifythevalidityandtheimprovedperformanceoftheproposedtechniqueoverbenchmarkmethods.

简介：Inthedesignproblemoflowearthorbit(LEO)reconnaissancesatelliteconstellation,optimizationofcoverageperformanceisthedesigngoalinmostcurrentmethods.However,intheusingprocess,theuseronlyconcernswiththedetectioncapabilitiesratherthancoverageperformance.Toestablishtherelationshipbetweenthesetwoaspects,thereconnaissanceprocessesofnormalstochastictargetsareconsideredandthemathematicmodelsofdetectionprocessesarebuilt.Theindicatorsofcoverageperformanceareusedtoevaluatethedetectionprobabilityandexpectationofdetectiontimedelay,whichareimportantfactorsinreconnaissanceconstellationestimationviewedfrommilitaryintelligencediscipline.TheconclusionsconfirmedbythefinalsimulationwillbeusefulinLEOreconnaissanceconstellationdesign,optimizationandevaluation.

简介：希捷科技公司日前推出专为企业2级近线存储设计的全新企业级存储解决方案Constellation^TM系列硬盘。该系列包括一款2．5英寸Constellation硬盘和一款3.5英寸ConstellationES硬盘，