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="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: '9133cb9d9ac89cdb',cH: 'ixCNHQB4njPwz9PnCP4Ms2LVVYesNeFFZzZ6Nq1e2.c-1739774525-1.2.1.1-yIgoLUt0OFRMTYmUhU5x58UfqZejk2OC3w01wv3FT593g4T71zvfd3KXQRkLyT4c',cUPMDTk: "\/9997032.pdf?__cf_chl_tk=wixDZE4NSXYPxHigNtuVOIe.AwfPuhkSJbq7mJ5iPD8-1739774525-1.0.1.1-tAqDR_mg2ZMd.u8jxrok94TElG3gjoeunYnmijFeqDo",cFPWv: 'b',cITimeS: '1739774525',cTTimeMs: '1000',cMTimeMs: '120000',cTplC: 0,cTplV: 5,cTplB: 'cf',cK: "",fa: "\/9997032.pdf?__cf_chl_f_tk=wixDZE4NSXYPxHigNtuVOIe.AwfPuhkSJbq7mJ5iPD8-1739774525-1.0.1.1-tAqDR_mg2ZMd.u8jxrok94TElG3gjoeunYnmijFeqDo",md: "6TICpybVp8LOxdoU.unkitT5zUmHPD4w.KgvLrK6kyI-1739774525-1.2.1.1-K1fjDQsDxnGypl_lnbpRfiIOIF0TUnn7gs9g_EE3EDwq2aN0RGCxGXIkU6RyK7qexI1M6qfVtAU26yr.LaSXwW74aEtDnbyRsN8T57FVZVhzpJdwVLQvE5gdCFJHxXpiOG1ml4BmtUkcQWPuT_HBORCg3PD7pxxJaYb0uHsBSUwhamcr3oHURKmMpzVk3U5bWapTE3vU4bdfG3atf1cizOCiGhAhZAWhb8S4BiS.zlN3TT25rE5Fvu9_kW7Xud_3CQbLvDiDM69zZqPOEnQpvdkI2t5ywtrKIUZugGSQ44F7Ehc6HiBxr8RitH5avFwkpC9E_heya__p5G4xYWgN46n1vQlXOanNN0DYXwJk4Iw2BTtL0LXYJ0dPbN_eA1duiJeubv_abPN.ogVQnYmWU8wZgGCbLKHYXZhfWMzPoTWb9AfzxeJPQlZUyFFwrIy5Af5sVTAGPQUCkvqX.8xrNly1XCZoD9JJqNMlFkjZqAGBg2dVoulQM.r8FsL7wIh1p2gfjXUMoaFkJHyd7alnK3nz.mRxawfBj2AVzwgTWVs7FVwzR3XvCEqO5PafFqp68HHfnAGpNgctAdUlSI_SROe3NPmM6hSwVNAXV0dq5bJelWurystkTXY3FKV2HqbZJLis.ZNsmVA2CddN9ZJ2LvGPiVHvgYSFBSPrg5jTk6n_oHk_y95KsiY5.V3GKDaDLorKYAIY3uw1SmakZQSYG9q_6w9.l68l_UE3rgDv0qkz_4kNhP.PgQta6lV1VFOoj8Vs8BAccw.AeyDSrsojNyhfngjBUwVPht6EuvoeyoMl47Yopabdro3DH5kwjloAGRhzOMk85SX1.IGEAZ.6UDEelLbLKlI1p7GKGW8M_W7MFqKX8lEQsX3NGK7XsDT0vaFOkl1iu5fNR67dlX57tp0Tibwao6rHhe6Xi6zxYVtn1HqaYIkpIJ3MH7BXlkAtI.n.yMHUL19DYMgAHlFAFwAkNuXwgih_S6Qnrg.R4_Y0MqpUtM1vlf.5_7pXxTyA1z.03NdwPAYmbyFHYizC..wjMI2nvPfFCuwL1V.i17swQ4_ugUMBifFngMNLrVJDiJgAE_w58Zfyu_3FiyhKg6_qud28DtbSCnpFQ.ogO_P_EIdYb.bsfPkInHKRasDYC9Mumv4fnFu5LET7QJGWkWqO2apeBpRU7UzGVUW11eYbw7NYy6m1L4hPG3P7KAzVfFxRQDh6ulInNq0Gh9sjhWFkYpZG8QR7PoW4z6Vl7zYN1NpoYqlEz0N2uRbUR2Bz9Dk8FX8TzxPdD3h8aSgiPgaKo.jwAJPKOdPaeGjm1eGbRaTywaAZWoS58YotfNpd3elmmMPgM_lUrLhFU8jnGG1OqHmFbIHBHr4RzN37IoPYkVTyxRO2jfATcs0XY8Vtvg2mFiFjM8BxTF1tjyHd6rJIQciT3T8AKnRtpGRq7SNS23tWtj8L8GzyFx4CrJkwYO9U1P_LeY6Sv4HwUuE6op.26v0Y6GhSFVa.iOZXTY6fISpUUIuFQkkLH64h9ZTHYLhbCDB45cmTCLNYb5Kc62cZBKfM76bXtDMTvxY41LB13rVTCokwdgM83QAVun8qOVtR1Ybg34DkkHXgk3aioouueP9G9kftBaFvY3JGfRJQwB_mx8euY1EU_hQ_6GE65XO5n6OAX1aoo7Mx3tgyQVpQyCk0AK2tSmB2it4RofB5FXTaeXvTUQMCO.RiBbx5XecIIjTGShuBb0kLE_iwcELLc9LMBC9vCIURXNJ.Y0PjUNnW.eoofsobSal1TR0Tsmkfm6zQJQK.1qIk0IL2j57VyJUMvtE1gq2hy2kkVW4ytKO4VnnaSYMg0Ce23Kj2Yqc8Sjkmk1ssQM1YIL4BEByAyhaTSNS8nsCVUf4yEUY",mdrd: "1wA9cz3mnJ84hoQ6UBuYbTxJ_UT7p._fKAysYuhuqkE-1739774525-1.2.1.1-GU4pbPR0vre6KFRoo3qUeXQJwcRqyufn4y04FWUvQ4k2O.zoi6nM7y2SU13MQR9TO5mC7PsSoo6xa2FtoI_qNz0SB92ZmOADeusHNl4tOjD0NTj0IN3J3afQ7ODLhVNKk.lkKUZXJrfU78hZDbZJ1SYrWmEAP.evqFPUFxUJXcL491d2hYFyh6iHfp__z8r.JVlsQILq6t1A_CEVZR.DlUeQP2dAWz5Emm3QC9lEz_NhA6tnTu6A5l64pteWlmxTTeVNPLq178Iip3MF5iDMaEL1mJx66a3SDl0yQq_ujhxppYlE4Z7J9TdD6SgOCakStTVk0WY0ZXUsv0CR0zaJ06b9Y6ZoNTQdFtKOZurKUHXnJlHg6vjHWpE681cAjN4G2tO8FsIMN5lkc_PNm6SSHNsfvApPJ7esHRfdYqRmsAGlYOGhJF1wjqtPAu.4jDwNhCuy0XiFkYgOE6CRE20Oor1ly3PynRkJzIuchD7t4OvG.mzz4DA3mhcqFIBePjesnRB6t801hH052SIZhv5TD3y1bxBQLlvJVMOPMIrSewEJzvfNDkq9IzadIdP6GHpFiTOUHQ2l9Or11azFwv.xSR9plu.H4bfegetNJQ68UFTf5_RrTmaYu4J4iusBJbdRxFgYkjFgenRZYtNm1xMhm.8iSHY8tJXgcnQyIb0BenOlvL7f0dO3o8rCwtbDG4kS.7mOHC.9m2YjVxxwIHeCvVttkO0fBng3g7rKg1GD4VWpqHu6WwqfmUIO6Yngpqkhv.BMq3b2gWnZUrl0iSxaPGtgidhABvZlI31FULtSSvczHOl8kAH5ax4HiphYqtRuqajUOlAovwaD949R7BocrrXwCdL5W0NXkeIGXfvPH00zcrZ4qAG_TmFFXVHpxl0a60IvlRCZzf5Pm3aGSOtEksVGYqk7qlrmzCrXgyBXoe1nogFp_x19dT9pHAUsG0H5a_NKNuq8zUw9zJ5dTF56xS.fE_EJMNUxFhyPsTd0jx_7flTljXbkc5WZ6p.jVyKSnfmyfqvR9eUrftqRQSFfA3O9yGKWSAp9ZvNFz1q0z3WTnaQhWCqiPgP75cj9f1vsd5P7mSQ5Gt6yb2cARs6n4uSfqeWMMkEAE7dN8PRlK4Mg2mV_4KtIrZQyt29N1KdNcSV6yF6C7taQW5RNXq6Jw_eCz_gqe90ET_zeR41.04Ejphq.9c_BX7H4dktJOIp7xqhc6RaI85ZZrq7YVDz4Hnb5XaAag1NUP8q7fCbVGq.HdWCJgDYn.luYbacMzSccYqR_mLd8AKyAC6H6E4IP0qW1PCcSf9bfnqcL3j7WAu_rqj6g9D1NXgCDi6ACs9whpO2G1Q.Evvl8Wrhsscxjv6dg98I7xVuYfhxEHS_N0YhVFSb344zg6k7GK5sZLs8MnqPf2RZ.9GaDm9jFIpsX0Q.EVtksfJM5KUzpi8u4OsbZ_WdOK0eADk9fNDfiBdD9AdRniKIPpuGwCkG0CxZgEBkeLj1tT._X9Co5OR8E9rr1CAtI2CGBsBB2LG9yZPeViDcmK8FZCyPQMzfEa4Xw4DkOjylEsN0iE6Z5iVVTKyli9iBeoHnBRBoECKhIYhru1CBOSufOHgODhM8EO6ko_QiaKk8uOWgZVprAp3S91r.bXCs9uecE4dVlVJfHU2gWJHd6jMPXD3YK7gHEHrLY3F5VhEs0sA_enuT9ctlYvhmT.ySA5QZ2LJuKJaQXBn.A5QXaivXZY3kRMtWtl5BF6P3BzMvVIBPBCd1lJ5zsyVEFUVHfBcPOAYpiEHR0YuOES5Rovw1Mg9dg8l30JuDf0Sm75tLE.Dm9mofgpzpk2vymMm0IWmT5DrfegYJRpD5J9ciPIxjQAgLHZMNYLfGYKCfdtIBKREecP5dAtbdAiUXddMRr3.eCG.vKKezhNVOnY9nApczCZEvtTOCfCshUjPDpp.wZ6bLyH3KwYLu8qZQ"};var cpo = document.createElement('script');cpo.src = '/cdn-cgi/challenge-platform/h/b/orchestrate/chl_page/v1?ray=9133cb9d9ac89cdb';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, "\/9997032.pdf?__cf_chl_rt_tk=wixDZE4NSXYPxHigNtuVOIe.AwfPuhkSJbq7mJ5iPD8-1739774525-1.0.1.1-tAqDR_mg2ZMd.u8jxrok94TElG3gjoeunYnmijFeqDo" + window._cf_chl_opt.cOgUHash);cpo.onload = function() {history.replaceState(null, null, ogU);}}document.getElementsByTagName('head')[0].appendChild(cpo);}());</script></body></html>