CINXE.COM
Just a moment...
<!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="390"></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: 'managed',cRay: '92a7577fae3b81f6',cH: 'Pn7Xh_ppjsL9dMSihFzHweGPMQCLhnccQeviVcE0HNw-1743670471-1.2.1.1-QRm3kheqj44fbJrx68GRqho5rs7fkxInaae7AAyN9tZFhofQqcrKCg8hw5lfNEbm',cUPMDTk: "\/6734\/json?__cf_chl_tk=W3zm0Rg3q4E_.9LoQwYSbXOAGdbR8h_c.ZX3lbl1m2M-1743670471-1.0.1.1-5ETYYOpefi370TWqjFG0KFVlUA5H5rlEGvmF93xNWs4",cFPWv: 'g',cITimeS: '1743670471',cTTimeMs: '1000',cMTimeMs: '390000',cTplC: 0,cTplV: 5,cTplB: 'cf',cK: "",fa: "\/6734\/json?__cf_chl_f_tk=W3zm0Rg3q4E_.9LoQwYSbXOAGdbR8h_c.ZX3lbl1m2M-1743670471-1.0.1.1-5ETYYOpefi370TWqjFG0KFVlUA5H5rlEGvmF93xNWs4",md: "QAyELQFFfNg7nNa3Uv5JFtBECSu_RL.mUO9NSLaLBRE-1743670471-1.2.1.1-NZN0oGeBOc2v8vqwMg2173.7TVUOLpQQxUyRp8pELTEahixYCtFUcr91SbIXOHuVcSUEK0xAsuKmOar4QGgUujCFdE0bt9o1SqeGPxAggjHU58ic1N7lIys0E0dbx.3mz3a.njaV614zRw8mKugn_scWSAcyi3dTRKKe5NVy.2ES.x8hl8JFWF4gKmklB4V6EWFOXZ7on_nMi4Fwm8kDL5FxzPZ73qwL96Q9Yio1XP_YrT_f50FyOzoW9RD3Ch9CTmABhkjwsItjnTCVATgq3vZJYbS3TBkI.l0aC_JBnVUBHeBQz5dEaWbcAequ59kLWfZkvzicVhgnrJOIwR2zArPT4k7w.Yn1VAu6Wt5HjLJ56A_3boh_UCuNTvnNgWOj410JmSzWGzPCRdIgzXe4rwkFalBIDSN3zJebRh1i3pa7KnOduEaclkPqqPp.JmZLA2h9ZHDNhIeTjObKUpvI6VWapI06iC288kYrWlBMZGyxCFgaYuniPg6786CABDgg5nKxIKvTpXWMD4dxSkDAnjlo1ae_ekuc9YNFbYtc09qxGGo8Xz1.2EkhAYcUAIpKE.yLNlORMCke90bUys4jYEoIXIPkGtVEjhA0pY.th8INRxuhfMaIGDiAs2u9DDnWqLVGb8HHPe7nise8qrsYGgUPr0tA5ag7CFy0zs2bKuVWPOkTvDUnL39.NKCL0ADeXmWUYtwsh62hZlFg_1xtj5LQs0oXq6zY9U7SmSVKz5ijEG9GCWu72rMkwRVkyUcBiH6V_PZLeWUg54kzlVI37hHFaUhmex0EtBPv1JNriCAa7IGY6cgsMmyvJp6gTigFoNG3192GuzSUoBlIod3eAtuJ5FFUHAcH6Y5AMPmg3MQL5WSKfPR5Cc.u6N8yn1XdHRChFvjqu36JPI2Pj1ssyXtmdM3l0tXyYV9iKi.WQNL77KqJEi.RKQZWTL.WkJEm5jHBHGYPRWOrkXYIOrsLChIhlCJplF6_0rWH8Z9NwbvkdPT38bvYZEKFc5.ljwS2.zkKfq7w7Pae0cjoK2J2fKpYHrhE3RqS0USwwOY44fBamGlIlbDnjmME4VkzKG76XFv4KUwuGvaMIjxeWdow9iLZ_VK3LLX9M4t_Qib6Uf1707GzM5GbwlFV5.mFysDY3_.2oJJMOmoTtHeAAejkd6aSs1kZe.knZC.mnQEZwMj9aRinn1FBiSmF.DR6Pqk.n_AqWLTkxqlRNAoStlgCKQ",mdrd: "x9R_DmiicP0CIrLJC0kwEs5vEh4cNiUnrYSij47Jr8g-1743670471-1.2.1.1-wHV8E_xajUEi1t2N12t0AyplNS1CqtmPDlcsF.PCMv5_ZPqtrETsi_sxidQpPm7CSUkh1DR7U.s.emRCr0dDosf73AfVVtbpQZ94MMyv4rg5QXACWwPlc4wCYnJTPGv.anbxmXPejuVFUDpIoUHKE_PSCMUrOJOKxwiTP2JEOkYvrYTIohHeIhBi.tURoaYjPauQ4MAg2ZZHv5qfe5RI5fJbPKR9RLEZ27y5Gw2VG.BANHXGNWlUYq3hRUNNnKssmsu5_9IaUEkc5h.6BNwLKne78hrVdUfTycqY4MVxyi4hzczwfneBb1Y5fH8_4ar2n6qtKOM7WC7o66LMFrHbjBMTlyQs_O_XMZ2BuaeyZYffGuLOsKV31VB0iM2IZZxAFqmIUtCthgezvGa7awGB9MME93bnygGRagSu6Ycr3aN5jKWYZPJSu3vbyg2lnsZUaYJaYMAVKdl1D_kpCtGEHXe4G8iy9GHNvyBmvWOU4UDYTF6ZXEBd2LRXXN.4uoHTvZXvOFf0upYM.3aJa7Z29aQSUGu63w2GZkM09CcfwBi6OnyN_uHgmA_nWGw1gmxJTlsAbUMOxp5TOYAcni8_6Lfen5s2MEUHhtx0lfcGC_s.sEpsoW.4vCrklg_bMHnGHmQdyjl8z_WXBFi3R6ysJ1sywAifsqh29ErBKysAXu.oygY_.5bG8mjfbivlayh51QnuTVYrQXPtfsNd00QV8JuBwcJgsB4j2RzHP2za0p3wV.hVOMnoX7L2aiWnmIVcBK2r_hEN7nXzos3f_airVpJKeobd28AcPYEznCcV_raP74l7v15oLdlci0yOhUrtSOl4.XgHA_FVR89gFKBGL3cJmAdkZImN6BCVCNPJR_cTKbvjLhxw6CNfD3G88wrYHZ66ysEbOCcWXxqSjZ0mMQWuB8ZsFdTFTzJdW6C0bRcHxuUOVJvJ3y1AY9O4CXm1Ac8xY4MsHsurS3FTimKzcYWFc54ubTpfngcEk8ipN0fFg5baAuhTThPfuYlp4VbK36r6Oex5B7hRz_mIHDMptqMoEfCixkZZgp09.A8yx3v95fIXAJ6srfUWxfdjqV569AwzkceSlM0MZSqehIO2YKQMMRQWs8ToRgEsy2ZMIZz3Hki16bKJ7Fa7KDVTBEzjW3Jwox5cPLC0ktKxhnXZZl40aCU2ol_GrA98s.0YaWkOVqqCGuPlNZYZLTl3TO_om8_2frevaB2ISy097TB8LzoeX6enTdTy7fovg_swcIXyqZFIte8s4IontyhmzPyaVAxMLVlDiO7LAbvBmM5FjPV85N4NT0Bwke3SfYYEef2IpqkKFiymHhGIYQdWcqAhYUkwlprCWauKfy3XoxRpmBizQcWUIFLivXcmTXv_A1S9_BpdFcG1FNyn2h0PMDmGNOmjgeKGsZyvrVdl_zKy2IzaMyHXlR1f6GRYcyAp7hxKDjetkG8I3Im3_.eYd.bNQzqiPHh8xhfcw1bF5mFrDAlzkPzRYfLOlE6fqwPrzqFUkbU8a3n.Z9RE2phvyZ9sY0XEz_K2DtwkFI7UUeY8kAgJUQ4YMHn_2f7kRK6hudCPPWo6dMck8uCC.qE3Rz6Iyn9F8KvZQLNXqkTwEh4Lxg42YTGJuvNy3gzjb.Hr.8OEVoT0jPTE_6oBhYCFc6dlBPACHn8DuGIu8j6pamlF8pAKg41tFLBetL_ihUbJJwPMSN9RNIxvBmnS86ATDdTiUeg8vJd9eW0FJTBVbgrcI7ah_pKrEGfM1KsIjYAlkpANmlWeStdh0132FE.K7iQV8OhyY7N1tvzrUPJIYfETevJDOx8TGPPZ_4aotsMJglHw4nrg4mbYyRtFgr7T4tlHk7lvc45bSQb99uC7Lta.YXPJn5v_xl1SYzqEa_Sq.N7n0T8rk4aomCSDehSvZaUlXQcsFMWf3E1AbbWi7sbG4gx7CmtZLkIEAUg8txBU8O7lBUE4Y6aP13XaVf9cOWU40qfC1aoSqI3PPw6GpAm8Lou_RCAf1hna5q6eAOchh4Vk8IcZ3eAOBpouXxRWvSdwEeGGmuvEq7pPDmCa1GZl0K9AyGumfIMbDr7UUrplDqo"};var cpo = document.createElement('script');cpo.src = '/cdn-cgi/challenge-platform/h/g/orchestrate/chl_page/v1?ray=92a7577fae3b81f6';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, "\/6734\/json?__cf_chl_rt_tk=W3zm0Rg3q4E_.9LoQwYSbXOAGdbR8h_c.ZX3lbl1m2M-1743670471-1.0.1.1-5ETYYOpefi370TWqjFG0KFVlUA5H5rlEGvmF93xNWs4" + window._cf_chl_opt.cOgUHash);cpo.onload = function() {history.replaceState(null, null, ogU);}}document.getElementsByTagName('head')[0].appendChild(cpo);}());</script></body></html>