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: '914d2c9bbddd4dce',cH: 'sav.0AxVc_EQ2W2mU64VtZ3t.DRDTBobdXpXxsXzazg-1740040641-1.2.1.1-gssTkW3AxQOCLjQEqp.ui3ZQNrHk4K.B1M5PH45E3HQR_mNDtSBHJBxnKqEd4IKz',cUPMDTk: "\/10013807.pdf?__cf_chl_tk=OUQ2CC4RHuYubSC8F5LXpZGYqGEMqyrIEOlzDOPoMLo-1740040641-1.0.1.1-SWpUNt8bZux9LUBM3TH2nV8phPNy2OLO8FctReA.WvQ",cFPWv: 'g',cITimeS: '1740040641',cTTimeMs: '1000',cMTimeMs: '120000',cTplC: 0,cTplV: 5,cTplB: 'cf',cK: "unsupported-browser",fa: "\/10013807.pdf?__cf_chl_f_tk=OUQ2CC4RHuYubSC8F5LXpZGYqGEMqyrIEOlzDOPoMLo-1740040641-1.0.1.1-SWpUNt8bZux9LUBM3TH2nV8phPNy2OLO8FctReA.WvQ",md: "Wqze93D.dIiSDe80frKk0VYx57Z0Jpy6adlH9dvG4mY-1740040641-1.2.1.1-E6q_iexdz1ciyzhO_tqll5A1jXM_C3i7BCjELuothbc0Mfvhln5WT.waNK2zFO4yZZ418FHwf3BjbZkFyeYsdkQ34pguMikpAJCnBdgVyK6TDyydqGwapf1WlBQzQAw3GqR8eFrRDLe3voIsEBz_cUM5uLlSpPodnHhWahuAFgqS54k040q6xDef.96MFjaTt_f3K.JtjM1QMANnbhVCgVtNGnpsAGSPjKGL1yIVanzZpqO4UDOL_A1QmRdZ7AFPh3lwDmAXUi4ROLSmq1qlt.cqw_KiCwkVuRy5WfrUso7lpC_xErkSGn0J8YmZk8iocuN_lTsD1SqDZE_KSfkcB6K_ZGUGBGSD4pJzmKH4pykJycQQpkMZVjI9_asvPWSiGgh1MxG6v3mJaxvhpMV6YO8g3TY5IMP.Ima9_Q_Sad8Hzax0t9CgfBzkXPR9NIJC9hxVvdbQIh5TsVLyMCWsk1q5XTz0Sz3aW7n5CpF9UMKMFef_GXeGxqwlO3ivY1lWRsvJRlj.yPjjYdr4qe5Rz97MeHm59MyKicY62MJjc9CSl8wIpu4Zg50yf4n6l7AUKnN1kVyf_uXU9U7wfWWv21iWK9kRqsPFfGmruLWVcu27rwfaLRS1SsI3Cmo22.RW_ODoEn4e2uOLBjYnO4O9_6p2wSove_QEdKKTRFRyCU6GFWVjJwMnLyrNVrf24kvRVHJlb.lNvtZiTWQtr8eyPexuqPMcxRrmmDXbxDNcCdudkO94OiEMDaK4fDmPf8On1czu7YQTlqBwT0dd00A.o10kKAdKtWUUJ0QapGD2aXOHmqCSWrfyD0XZTIjZ9vQeVekwqRHKbVYe7dOashsG_HHsGO_KYFfNPAjQ.95KH8Mpwscn7JPn5bjbQpfVEt_9C5Ge95vDlfADrQR9BFVjhru5B03Onw6gcSe0xDprEvIhqqf.rfNLjG9jogBd0BCcd4IOGJO5HIjS4xbmffuEq1D4Xpc0s65QbxkzhGoPf0tFsLADSoWxCz_1739aBExSz4rDILqE3bdgfQYSISkumvGe3YjbgxRiFKTrWGG5bx5r8PiEd1tFZ0AduJmFXSwnevSFBLaRO01XNigPI5B_3U4c0qzGHU9f7_H81vRZK4Lmb3NkmLYY2nb.y2GANBkqRQliYQZUSewbMI69Yppo0YOY5ZSnhC3AJLKIImCv7IQs6qwghtlIVoZQ7GxSsCyFgYZrMdVYnIpGDLsUb.nPOWn0R_bpEqNJQKLphNVX5teMZNDZxMftVAeKbqunt2yrtqkpE2oguR1jQJPPwd3MTsUnLVR_gqap_ZI04pm0d9.WK.HMeFoTOGAs7AIUFbKHtolE4Dn7i4Qss.A50crBwnBDnJcO6l5oG7eVssaAFOaeGkPcq0bQk2QGKMOYNFNeOBUfvKdvStHnDfqnjkppXcrA4wcoz8gwhxx83OyekQHnn_6sDtYfrOSEebnmVqSlcd8b5ytWPgDdCeqBg3hxiICDmlagXJzH5VbiFVe6KNvytX9vn6R0fcBX6Bo1ALlGzRWSLVQImSFRZfwRMivwcIl0QmhNPRDBnguL43BOVxwDxqlJDhtztE2Jj6y7ZxEkCOrm1kDQRtozL4XgHSOmB9VxIe1ykx_I37il5IOHGf.tJj73kjtMVcxhN_KMhop8Fsipul_LyWeeQYiMufZ.f_8CjboFf1eP051czGabrvMNEma.gO8PzqxVl0GSVW9kXao73VThX6krWZza8dWJrPAKyMrMKRtjE_TWzbf8LHyGWqkSJ4ItzClma2e3CJHpxQYFu6MKTxArNGJnEvnei_Nc9qsYadhCuIbwUEEZ4p8FDGaAUga.QE0pS3HO6mCqbdEp52MsrFnUysMO8jeEdiuq5QUeoLkiDHFxeMnj2Iw",mdrd: "2W0Hat5RGB__V7UakcBMsAWd14YfMncuSBH6X1ypBCc-1740040641-1.2.1.1-5g2kiYd0yrXleBRW_BDZ3846wi_JP4meHeERMALrMfIWE8ttLMQCDR_hivV5KvfOwP6mDCYAuEOGa02yM6FzFlHu7NwgxTifjYbI.gq4ahqu4TQ6QQ1hCJe1iY6Z1gETWWt.78ILyx66.UXgN3Qw3ommIpPVZleq0lW9tO58vqvGQgPEQFwerK.jAQ4PwMTcJ.uHfsS4m5f0qJJirKbOwf9_Va94IZWsqGkbaFPg5ZhXrAT.mmg3qgGnyAyxmxaqNCNpnp3zvWbLvHgabSrdmhNqbjNyXaE5cWOt791j3ZpWISvsy9GkbPtYVldToJnABjx3AwhJlbKCw2Qu4LKL.CVSKw_nEOIypfF5Qxw4sloSGfJzdp7vygGA8c6HbD_pzmUFrnhwlvjQhs4p8YwHeA3RzpWo3zAbcfbUzp7DdpcUDKk8pDGEVnVxxWhCNubj.Ng_MkkVjl3iFKqN827K1k.u33dM39t2oElQyNFdNxhUm._2Z.BbG1r7Y_NAuymZwEPESIHlOWA3e4C_RCD_Jno16xYuD5ud.963gLcuGCSyuoR4QZNJOIJULzxQqjoz3XmKw45C9Dx9VcQ9I7GsjZBK7eJsph.zWGGJQrkiQmDg_f0rexSZJ6dGwvRMagYGZZpR4tzKmI.xCqGvkLTuEj1esN_Dn4Obgl4lyhlkEtzAkWmlKvyDfByXfClZsxCgH9TyLUG5VCz0gmwL8GWC1qfZ0uwxUeLq6KATMQdEXXEfcNgCHmCYGkSXC_LYcvNVZseuAdqYV3IKm0HUQSBOcntEqPvRSNs7Fp84Avy5xG.2YZbmKV4viUb_UaHOhnZQP7.KSYjQojp0NaZdQMKe37ZlLsASgM.dvy9hjTo1fhUErbe5ojkxEUVwdQjEuIacLOsHlnBCYSQ6KCum1FcL5vq1DaebCLhr3_GVAW43cE_sfVrsVa7ufP5l3ycBawe1lvGhNx090Ggbo8uoCMQ92BaSvwh6GYjkeVoElaK9qIuNUS.0WMR4U8fTAhxL.2uV8NHm3UYUQPHUYpirGpSgSh2T7JbiKmdCUN9Z26TNCTwaYltFgOGSjEhjaZ.Liyr2OSOHWCaa_ljNpYqEmDPzBcnKBgQ6ZBeV2ur2Mk2wR.FP2fNGJAaCjekJmBS5buQEO.fZ7QBJwfOql1KQI7GKf08qImkMmSEVvCGSJwJhzj8Gnx5gzmA.39x_.5K6CAKFg4iH7TpTQv3jxrpLfc4x3t9xq5vlaF91YdzFqywjpyph1nCeXlY17uqiVmNCgvYQo_OSgO9FsyAHXkPpcs2HwCVvdierUI9GhAej6bb3oMlqkycUxKWOuBoKGLWsAq2P6TGaguwQeAejQwOZT2fr6uOqSWZiLeaci5Jr9WMqiuqlvK9kzDxVuWTJy1PLKrnTLlQCywDeYSndIUfdRu2ZIHcalGQXpNhb2KSJHsE0HDblCBJD9Ox_gHcyqhaUfSd2VFpdCjMlz1HsAoUFmOCWO0zQ87T0ogQd8fYAlAYyJavofv3EwFZ2TtVzv_RT94XfnGmfNUZsleAOREo6kjl5gIGGgwa5bIhj1FPV2mkBUA8yCIXlKxDbauZ2eQLcD98oNeM3ziDnSDaGkF7JFesM2e1g0gDK_Z3AElssF8ar7CNdkFpY7_c9UIjXhirfIuyfCT_MYMdALZSijbPxkJLOs7k2jwpmMBwOs00mPMy9M.Fop80kaUFUWfGLxEweHps9WjaFxQTVcNKWFI5gME8K81.hBXBq.No_H3hRuNTcyVKK6S.YdVkxfTvEsF9GmoN7GCTUsSYvR0te2EVuLIlkR4cOXNVhsakzRE53RKWjdg9fwna2Nbuhd_SDqvugGrOT1YICKVKKoG_0A.EjcpHv2hioQ5.9BQJ38EdIS0vxfW9XwVS3W8_RQoAs63dF5pto.f.eU1_BD2mE.ivdnoe4NZ2tVh8wngcRcX1x54n0Fgr8ki1luUQC6kjcLZuLDyCn2.AFIMcW2B2kv0TEuVsf8Q"};var cpo = document.createElement('script');cpo.src = '/cdn-cgi/challenge-platform/h/g/orchestrate/chl_page/v1?ray=914d2c9bbddd4dce';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, "\/10013807.pdf?__cf_chl_rt_tk=OUQ2CC4RHuYubSC8F5LXpZGYqGEMqyrIEOlzDOPoMLo-1740040641-1.0.1.1-SWpUNt8bZux9LUBM3TH2nV8phPNy2OLO8FctReA.WvQ" + window._cf_chl_opt.cOgUHash);cpo.onload = function() {history.replaceState(null, null, ogU);}}document.getElementsByTagName('head')[0].appendChild(cpo);}());</script></body></html>