CINXE.COM

<!DOCTYPE html><html lang="en-US"><head><title>Just a moment...</title><meta http-equiv="Content-Type" content="text/html; charset=UTF-8"><meta http-equiv="X-UA-Compatible" content="IE=Edge"><meta name="robots" content="noindex,nofollow"><meta name="viewport" content="width=device-width,initial-scale=1"><style>*{box-sizing:border-box;margin:0;padding:0}html{line-height:1.15;-webkit-text-size-adjust:100%;color:#313131;font-family:system-ui,-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,Helvetica Neue,Arial,Noto Sans,sans-serif,Apple Color Emoji,Segoe UI Emoji,Segoe UI Symbol,Noto Color Emoji}body{display:flex;flex-direction:column;height:100vh;min-height:100vh}.main-content{margin:8rem auto;max-width:60rem;padding-left:1.5rem}@media (width <= 720px){.main-content{margin-top:4rem}}.h2{font-size:1.5rem;font-weight:500;line-height:2.25rem}@media (width <= 720px){.h2{font-size:1.25rem;line-height:1.5rem}}#challenge-error-text{background-image:url(data:image/svg+xml;base64,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);background-repeat:no-repeat;background-size:contain;padding-left:34px}@media (prefers-color-scheme:dark){body{background-color:#222;color:#d9d9d9}}</style><meta http-equiv="refresh" content="120"></head><body class="no-js"><div class="main-wrapper" role="main"><div class="main-content"><noscript><div class="h2"><span id="challenge-error-text">Enable JavaScript and cookies to continue</span></div></noscript></div></div><script>(function(){window._cf_chl_opt={cvId: '3',cZone: "publications.waset.org",cType: 'non-interactive',cRay: '91357552c86a3f4b',cH: 'phreNXF77Z530LKVmEa9.bmT9i1DOsCPrDn.Y9AYnNE-1739791962-1.2.1.1-yYxRUqZKvtSXplUQQdb0asLpiQGZ4rO6Fr97abCKYwSZsj7XJ2uUr9dJ2FfN0SVZ',cUPMDTk: "\/abstracts\/search?q=harmonic&__cf_chl_tk=Tduz1DMx3EFEG8Znpc2VxS68pb7hv_kdM9CSAmVNy_o-1739791962-1.0.1.1-tqJ3nMwVMUFR2THs8a0gt.x4.MwANJDwzLzKmtIBzOY",cFPWv: 'b',cITimeS: '1739791962',cTTimeMs: '1000',cMTimeMs: '120000',cTplC: 0,cTplV: 5,cTplB: 'cf',cK: "",fa: "\/abstracts\/search?q=harmonic&__cf_chl_f_tk=Tduz1DMx3EFEG8Znpc2VxS68pb7hv_kdM9CSAmVNy_o-1739791962-1.0.1.1-tqJ3nMwVMUFR2THs8a0gt.x4.MwANJDwzLzKmtIBzOY",md: "gQC5KIjt7t8s6KsWYaePZCVsTdu9ZaeZalXNlvs8RNc-1739791962-1.2.1.1-MiloOScz4p2TZ3SoK7_uGILY9tPGagPFBYIJKOG2QonRGUIX29Ma2DBpfpyji5IbSqOkggokdIFdxuzPwoApoilixBSMc2EE4jgG.ZQagH8awhrjVtD9nYnmuLTjH4079b43zhEDKLVFzDk46dc5UVf3XEIqFpl8jtjIqk6K8efrs7hpOLYLX0J6rOxMaK84tuQfAS3zSed38AvnzNYfICWkQeZ0Ss1ebA.2VybvyL7gBCCfCWoLD9cBXqt2dAdeBywaEJuIQPemeUqvpW82Ov_o_3MnmbXtTZVuG.vDJHAlKJt4.NXO6HkDCavgIeY25D9k1.Y1OkzKSE5YX4yEmvo17qJVqWfql9312fH9qavTkZ3TrqcvH_kWdllAGmtGX1G4PFij57Q3YcpaQfR7m.MWuHRp87J_52qqzo5xBqS1qAiNhC68a3WBPPqbwhgMVApcuEisoo0h9NOv9_Wm3lerhLV59T3YBQDNpxDACqoyfDZB_iahAcDNTndgHCgTQLHuKPtkXbdKNBW0oH9Yg7yimxyGr2PXN_WozjDLKiejHJESVC5wTy1v.AG3h64xlBnxxVGYs476f8Q2rXFf.lWX52wqCf0yBlGhK.MSmzqVmSmVioDDqOKyjPIoCjfPmcHZ3X2e8sEtDaL2wZsN46ixdOf0EBdqGkx6avDzdk5a4Je_VI1K42fnthLB1R.ZNpeuQQGVJuAUXK2DXbzJXGQiK6JHo3CizbMlvKCsa6MeKDKlqodr.UChgb8Ebj7HEXW_Gdoky2eD_OtqRdvFAy0KnSydfIwmclifdB1yIoyxCl96KSFjs8KGL1.nPqN3LISoPjWbgfHGqTfpQMLfrfbdEWZ1DbZ2ptV93z8qRKNBpHu6GBz7d14akpuCFVB09y2eC9737_mTyVj8LugIqSireUxDWrdfeLG5BM9yh4NlCD_btln9cEdkjWKcyS5rgKoRoLRWY8U9N5yQxvjtB7KFSlY6zuuaNWe7q59wmVPgRXP6_.t4y7hKJgXyyUFTpSEAAPEtH4m0b32YhaDszrwjjjKfmn5Ko1fIz4uJkKZ7uN6gZklDcEZTab93IeSFGI2gpbzxe.SFoyxwIzcS_CrsU.e8vBw9Kh9U5NKYI8D0YbJJpYS9WgnmpaC59mjfzGnqs27afmhzmImeDkPlaD4udKHfDY.A20WlwgrZbhTAsbrxdIiWDBTYuvFk5zE_N68TqdgDaHtQmA7hzUc4D8DDFkCeeLmW8PuP6waWodBa9CZgD8Snf4S22JKMGeFiwo0Onkm5OyhQxqBQpAF.XmFEXJCjeumOVGI2ovP3JMPUWYU9pAjm9m.E.Or55IUyjrsLBbeOmAzXbdzaEa8GngHbA487tzooIuyjAhL776b0AbfSsjVGNgIROqykaR2El9FoghCteVfGA4dc1otWfD_OVej5WVpppibqfnQIAIrLgg3fIC93wHPQZMVwEAzntEcO4Un7gs7GoBoomepEpwn2LzW.EipDC9xU52COvCNpjnbellMZPVfj0.F8bpE22f5AiloVIfRuDtn9f0cws4tsvr3jJ3c2LMXXFZ8s1PwAUPl8eUIxJEBjksJ.J7azTZH9BqrwzMHx6RbvH5gMB4b_YWFPZT87RYgQfvTcb4XvgDt5R.Ctq0lewYhE1LvmbSgnQ_.UOz43kZX2tHUv65d.c2RJy98nT9BHQi7axYEkW7pk2_kDdXbd.yCQFJJAnZPcQc6M4f9YjTWTI2UNSjZxiVDlPnHlIfEAXghNelKbXPCW.R8AbeYiKlBkggYOSnXrlFRdKQIqQf3bRbT1lgki0GC82r7U.DP7iUtF.G..OYL5S_f.kugDbkFD1PTEkQMNhUu867wrW1YJwaTj1eWvokUYmFQGrf9LLT9LTFjtmW68HjX375Di6vB2.2R9igembu0bbRyn_gBpzQgebw",mdrd: "k9SL7_s3IcnRocke8l0zLFl6H4LTnnvrIuSDINuZu.c-1739791962-1.2.1.1-NvdjmB_8WOmwGlFXTyGS6kENBHlkcFt_7jjMyQOC08tbHjXqmFskI_Rtg_DiM8kZAP1DVmsrvqdzEZfu16MBDqeqsSIO8hW69NoFJ2a86O_ROETfkgYLYFNGHMnaSQE4q9fHmTMp2Zr18iCybJtaNg33.TUOAEd3V80YKoFp2OMV.wTWm3SDXULBHM3oVxAQLdyzIjjTRgqptUfzoLZ8hN4bZpBk.128Q4QjJ808O4bDwVgVWDyf2xlPS6Oio8Mvb6.QXbhsMdfdJaxYArUMPIYIk7d6orbwPDIhKVW8Dg5frwoGcX1ijqV7d_0Emkf.NarAzOOA2eJoMGTt_HvZVMj9X8Cp53p_cwVxxtuVwPahJZ8QOd6Qfl38Ar0tBhMMWQ1JExx9PxwgNsHZM1KVU8Y34yobp720gJbD5cdrZJS2FAa0Oqdngg_fmacQ1SyU78ve7.yKDX_vKX.4CEhNcnXVOEbFeagQmhCsNoIm8lkCuG_APfejVgdyjB4Ip2GiCoaMFYutjTNxgI9LhpWNCNEr6SvYluXbFF38ZQb0I1v0Dyu8oW3iofNRHH1ndjfJHu.uc7zpxn4_0mdRP6fZto2ixNoZjf4pfTdTt_fpXaCMLYbOFb6K9a7Lx3.ZUJ.MEeLL.Rvae0tmaju91JA0lbDZgTPzEli1qFzficOubpxLohCtv5xMJaFMVOvAlVhqWV5FMNZVGtyGBApMfteoMKoiFU7FHxvfZpnDlwORBNDbcdzRJEXGvEZTYKH770UjlcHBrguooAkFkQQA8doUO1XCpT1tO5nO.C3fG7.O4nSIhf4lclJ5v_P7PsX_KnpWnjca_Y0zQ1m.trwKyF66x0qtOAgJk77jOs4pPT3OrJ_Tuv1Sdq2DVt8QkuBp3Ip6fW5hk_NsQTpjyJsD2rc_4MFAgD_trCSuOP3bCJnMiikaGaoESuBb7RxUGXuLuN.XYUCEAX5JUBRD9rS.FLnyGk7C.5PlDSUOYd8VjAvYxaGfnzQyoNnvIbZPIzRXbT89nofVyQVcPN_nYP9ZBNKTZRC1aksbsp2PFCzNh0lm7RpIAwU_n4CmHVoyyDacdSViA0J9QgYB9HeLaoR5bvfLrOW4xWMksgk0w6M.e0CmDRuzhWxn55671Nr131fRb979X8flnBiy0Sma6vj7upKr_EahfSDHhgzCXWV.3fahshBD9xxdWmQJLAy3A6whvrvxFYkfdsyKXi2x0xD7GO.REZ6k6iWZXsrrN.LEZ3Kpn2kXOnGz2kYhrlcmTBKFU8OC0D5M6jRkfchvnCzgHeQpYOWx7vOAFI4Stom4TJN9uMley7bsDIjEpbS8Furhlu1sQMVQaWFuH560m54DD6hmurVCOh2qLrlvtzysukNcoBiakF.xfgiCq82iS0gdJvptyxQrYHMtw8MbtM5Nxdx2FfUHqiKMcQj0dYmPK0VKPogKWBxyT6oGCfkQcQIaXkDIirTVuWk96oc05bePbFDLOmlAGGXz0i5zwKhg1Ou.LhZ3mZ2OcOHuN4D4o16i0Gh_iTvdCxcUbHG4f_cPa.9DqYiwEnNwOHqW6JKXg3tWqzI4q6OHVEUHIl8kYoWZgdciXig6kJ9hN02U_9LLdW06WR1cjwBRIIPsW8.cR4fugHLgr9JTXjBAHLpEwSc9AYjjE_jc8W9188LAaKItnmpEuNzUiZ7.O_i95Yh.hRQaa5PLX5lWTG2ATsgdqY1is3EAYjFTwz2Sj4CHJJPJa1dko7ViW8Vb0Ye0sYTcMzBf2qZWufviz2d9mUwJRMnAnsX7BrPh88x1KUZOs1MXBO3g1RG8hDabvhrEOgo3rcOU_fyP31f6znDLs0LwkENSNHyM5_lPxjnVifI4M.przhbUh_6.pChYobMlGkZt143XymV2.Muo80bquwNK0IW2NMdrtdWsqEY5xyRG1UPPJsirOXGQHdwhoOW5sAhjowrJXDN8zYBi.SONAscwWNG74HuL"};var cpo = document.createElement('script');cpo.src = '/cdn-cgi/challenge-platform/h/b/orchestrate/chl_page/v1?ray=91357552c86a3f4b';window._cf_chl_opt.cOgUHash = location.hash === '' && location.href.indexOf('#') !== -1 ? '#' : location.hash;window._cf_chl_opt.cOgUQuery = location.search === '' && location.href.slice(0, location.href.length - window._cf_chl_opt.cOgUHash.length).indexOf('?') !== -1 ? '?' : location.search;if (window.history && window.history.replaceState) {var ogU = location.pathname + window._cf_chl_opt.cOgUQuery + window._cf_chl_opt.cOgUHash;history.replaceState(null, null, "\/abstracts\/search?q=harmonic&__cf_chl_rt_tk=Tduz1DMx3EFEG8Znpc2VxS68pb7hv_kdM9CSAmVNy_o-1739791962-1.0.1.1-tqJ3nMwVMUFR2THs8a0gt.x4.MwANJDwzLzKmtIBzOY" + window._cf_chl_opt.cOgUHash);cpo.onload = function() {history.replaceState(null, null, ogU);}}document.getElementsByTagName('head')[0].appendChild(cpo);}());</script></body></html>