简介：Squid作为开源领域著名的代理服务器被广泛地应用到网络中，但其安全问题一直困饶着网络管理员。本文从Squid服务器的部署、通过不同的手段进行日志分析等方面详细地介绍了如何全面监控Squid服务器。

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简介：摘要：本文旨在研究并实现一种基于Squid的透明Web加速代理。Web加速代理是通过优化网络请求与响应，提高网页加载速度，减轻服务器负载以及降低网络带宽消耗的技术手段。在本研究中，我们将深入探讨Squid代理服务器的特性和功能，并设计一个透明Web加速代理系统。通过优化网络请求的处理、缓存策略、压缩技术的应用以及利用CDN等手段，我们旨在提升用户访问网页的体验和整体系统性能。

简介：Thejumboflyingsquid(Dosidicusgigas)populationwassurveyedwiththehelpofChinesesquidjiggingvesselsofftheCostaRicaDome(4°–11°N,90°–100°W)in2009and2010.ThedailycatchofD.gigasinthetwosurveycruisesrangedfrom0to5.5tandwasmostlyobtainedfromtheareasboundedby6°–9°Nand91°–94°Wandby6°30′–7°30′Nand96°–97°W.Theseasurfacetemperatureintheareasyieldingthemostcatchrangedfrom27.5to29℃.Thesexratioofthetotalcatchwas3.75:1(female:male).Themantlelengthofthesquidrangedfrom211to355mm(male)andfrom204to429mm(female)withanaverageof297.9and306.7mm,respectively.Intherelationshipofthemantlelength(mm)andbodyweight(g)ofthesquid,therewasnosignificantdifferencebetweensexes.Thefemaleandmalewereatasimilarmaturity,andmostindividualsarematuringorhavematuredwithafewfemalesbeingspent.Thesize(mantlelength)andageatthefirstsexualmaturitywere297mmand195dinfemales,andlessthan211mmand130dinmales,respectively.Mostofthesampledstomachs(70.6%)hadnofoodremains.Themajorpreysofthesquidswerefish,cephalopodsandcrustaceans,withthemostabundantMyctophumorientaleandD.gigas.Thepreysinmorethan65%ofthenon-emptysampledstomachsevidencedthecannibalismofD.gigas.TheresultsimprovedcurrentunderstandingofthefisherybiologyofD.gigasofftheCostaRicaDome,whichmayfacilitatetheassessmentandmanagementofrelativefisheryresources.

简介：Forapracticalsuperconductingquantuminterferencedevice(SQUID)basedmeasurementsystem,theTesla/voltcoefficientmustbeaccuratelycalibrated.Inthispaper,weproposeahighlyefficientmethodofcalibratingaSQUIDmagnetometersystemusingthreeorthogonalHelmholtzcoils.TheTesla/voltcoefficientisregardedasthemagnitudeofavectorpointingtothenormaldirectionofthepickupcoil.Byapplyingmagneticfieldsthroughathree-dimensionalHelmholtzcoil,theTesla/voltcoefficientcanbedirectlycalculatedfrommagnetometerresponsestothethreeorthogonallyappliedmagneticfields.Calibrationwithalternatingcurrent(AC)fieldisnormallyusedforbettersignal-to-noiseratioinnoisyurbanenvironmentsandtheresultsarecomparedwiththedirectcurrent(DC)calibrationtoavoidpossibleeffectsduetoeddycurrent.Inourexperiment,acalibrationrelativeerrorofabout6.89×10-4isobtained,andtheerrorismainlycausedbythenon-orthogonalityofthreeaxesoftheHelmholtzcoils.ThemethoddoesnotneedprecisealignmentofthemagnetometerinsidetheHelmholtzcoil.Itcanbeusedforthemultichannelmagnetometersystemcalibrationeffectivelyandaccurately.

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简介：Theneonflyingsquid,Ommastrephesbartramii,isaspeciesofeconomicallyimportantcephalopodintheNorthwestPacificOcean.Itsshortlifespanincreasesthesusceptibilityofthedistributionandabundancetothedirectimpactoftheenvironmentalconditions.Basedonthegeneralizedlinearmodel(GLM)andgeneralizedadditivemodel(GAM),thecommercialfisherydatafromtheChinesesquid-jiggingfleetsduring1995to2011wereusedtoexaminetheinterannualandseasonalvariabilityintheabundanceofO.bartramii,andtoevaluatetheinfluencesofvariablesontheabundance(catchperuniteffort,CPUE).TheresultsfromGLMsuggestedthatyear,month,latitude,seasurfacetemperature(SST),mixedlayerdepth(MLD),andtheinteractionterm(SST×MLD)weresignificantfactors.TheoptimalmodelbasedonGAMincludedallthesixsignificantvariablesandcouldexplain42.43%ofthevarianceinnominalCPUE.Theimportanceofthesixvariableswasrankedbydecreasingmagnitude:year,month,latitude,SST,MLDandSST×MLD.Thesquidwasmainlydistributedinthewatersbetween40?Nand44?NintheNorthwestPacificOcean.TheoptimalrangesofSSTandMLDwerefrom14to20℃andfrom10to30m,respectively.Thesquidabundancegreatlyfluctuatedfrom1995to2011.TheCPUEwaslowduring1995–2002andhighduring2003–2008.Furthermore,thesquidabundancewastypicallyhighinAugust.Theinterannualandseasonalvariabilitiesinthesquidabundancewereassociatedwiththevariationsofmarineenvironmentalconditionsandthelifehistorycharacteristicsofsquid.