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: '9135b4af1dc94c4d',cH: 'LyUko2.nNJV1ajd6t5bVYj_PvjtLJmju00JM207wv3Y-1739794557-1.2.1.1-f0OzCa9WowO7P.haChn_.D.Sr4owrw1k67b32464SfQ79xlbiSrhEP0qF1w8.mJs',cUPMDTk: "\/15482.pdf?__cf_chl_tk=iuB2AArTneVbnlwE3Bh1tFKXyxrkNJhnF22DtEwdbcc-1739794557-1.0.1.1-12awM4f.__Dy9TlgppJYUQGx3kRXrDz.N69FlsBRSvc",cFPWv: 'b',cITimeS: '1739794557',cTTimeMs: '1000',cMTimeMs: '120000',cTplC: 0,cTplV: 5,cTplB: 'cf',cK: "",fa: "\/15482.pdf?__cf_chl_f_tk=iuB2AArTneVbnlwE3Bh1tFKXyxrkNJhnF22DtEwdbcc-1739794557-1.0.1.1-12awM4f.__Dy9TlgppJYUQGx3kRXrDz.N69FlsBRSvc",md: "NQJf9apYWzdjbAE9qMcaDVBz9HLye10sD.QH280MLtI-1739794557-1.2.1.1-w_gI_gJlAXxs38ph.8GI3Alwqhn2aLDYdMMBYlnBardw3HDwxkVsUDSry59BmMRB.pRODURCkww1qEusJh2u.LzRN5eE6ueI3Fw0bWuahdLozlYNwT7JrF3mIvvXuY8ySoqXj0YDW0IkTBPz10OI0TTelW0pHjtiEM67IC8Khlb3hcb1ws1QiQXcCp5L.Q9QKORRF0jzWCTd1_v8I9icvgvo3OKluWv2uuAIMMrUvYRv7lCiZGF3YqwaNTpIqLfNPBUn0iOAgKHpWVntCUxmczCOQTDp91TbK5JZW7tg59xXnDs2IvwXD__GYU9PrQ2jEoeriDYabn98DVb5_On7M3Ew0xLX7ydD7y_KSMwtyE8Xnuq9hVT7Lsk.Lr5k6edB6uExV.wxq2g30ims9Wm8ohdpjnPD47eTLEOpN8vCZniU3yszL7gQFjImqTKu0dA3lSmNbqhwGinOgZTXhNASBJdkuwWXoHzSLVXJk2TNnHXYB8gCd9t1.GfX8dy0IVK19M33MnTo.rxn.kabL1ZdpMHt4t2KvVFXYPilehfZxuPs58C.mQeF4bfZC2J1pPsvH6o.OcAcNM0izHwZmZMEZ46N3v_wWtzAw5VKkVu_Lit.BaNAKp2cT7BVHk2rqw6JtiBVtbBnA.lf_jbcrKM_uyxw2vo99KkTsDengkZKJMRLpHEpl0D20DEWVgaS0WKIWNx04gnkomaAkwlwhFfxNJrpbm3_lfu3batFpYDP5mZWd3nKqX6XMNmJhgeyHoa34G032C5p5xFLrWWp8BVYI8flVgB6I.v2_NXVkb5lJmP5iPtAqSqaL2VHGOvzrldKDk.5x.3NZic5Gs.Tm1upBjq1xIAHOVndTJwDsb3hDoyYbxnlXQLbooWe25LvKg3OdHNaHjr8jT9SVjrrTVeV_pM9n5Yy6MHMQcAnwcW1NksR0vs6m3f7DmoxmUcDO.ufzQB9nOAa4OVjZ0yWwpx6JvSFfan5YU3YZQ6.9.qs0BQAZk3.Nh4zkW8fgzuN4mgPDh.gw4xB3c4xv5xy_PWHQJA7EiTuBLqS0_.Lu9PM2_8ujulapw2NuFk1NPwbKnR0IB2x_1KfQJtMNU.7Uc0FFtw.NZhsjAKBRc.puvIVHeKmnfaGPeeyjhOGIVDIKO_q4XhP3M9KidZzVHdLUc0ojD4XmeBDPvP_TlKvgOi97SEUhR56mx3hD48rbPBWAYtyFvjl4QnnWty84ZW6tRWJn6bnhfjIbSTUQJEWGPHfHEp3X5ftL_5Y_pq4I94VfEMCN0yyEZyZHHXD9ZySo_hvBTS_UDUQEhLOF2IPb6bDR3HvuY3ACVsUQzeMIk71RRiaa_3aqTilbmGc2e9zt_gT0XP1xz3OxhHE5dqDti3.TRRW4kp_ca.525TSykay35R3ak_cbLiXMjz3mb08tcNlmFSIuv82NWkwXBnFMp1N4Zti54RyWkccgIwRK4cUzUFDrrZhsLS4vNerRGM5xaBfDg.G6X8RXw49XvsSfS29UnDCN4rBrOcoivqhkuZC1YS6K980MQNMS6WRtdki5vs5_4xyNDqheGZZWxLRx.wuGpdHz5oBMOhVJy0Jfe33Bb4LCOxvuSKGRjr9fPIXWjhqIeZgGvH9rjGwtWCCuQMFqLkVmfp.EP6bh41WOkCQL7GDoIBqrUqSlHSJpRTaijHnHpj26ozgH6bU4YP9cKc9IT311bJs9tVTRqJzNElac.MWx7kcnIS9XkUdrSapEmQF_xGz9w6FYS6AkPVs97Xhyl3fel2TT8_7m7QbdpN.zA6Q_mSOqys6OJi5WbAhbmFaB5a.8NZIprVnDN8t2i_2P3gBcyjGrtc5cjW7ga7.0tPKqFLd9eIBAKncVVng.xVIPsC9r8qeB0DAbYYQTeEf6v0",mdrd: "u0IJRSnMqKUqxPSsUSLuG2J2jo.3GbcBgqRAioeZ3uU-1739794557-1.2.1.1-iIVNjpDYhPdpNDpmko0lzCf8w54k9Hxc1oHfjac8j6RjBRnZ1TTpdyGPSWKvaa_.kKSPdHundWt1qXWk_lwa5P_r.uC0pL0N1TeZkRNYoA.xo6hXdMNmZCBcVvrxFZ4f9ROg7lO59XVmIxpzyuaV2lETsqTDc1FZgm0RTIW27pEp_5L8wDXEGwegcxywlr.b6DqLj4KVUIK8CbAenlmqqpS9oKXBK10XXdahnIKNJyBVJ6MhDBM4v_tOJqxzdY4pni6NS1PLc5HsIY9G0_p90JOeUOGbA7_gv7tKwQJhlEq7aAv5bBx3HHy.LKJUHoaO5If7Mq10uHilard.C5R9LiCZAG87m2.Q9r4AnZjPSSAfJDhOk8QNEd5Qwp8vCMG4EDhlK.TPlf6M3fZfRMsX3RV1fuxCC0szY10kfkFkWTuKPA2ggXbc6LaoK.8WQ.hcCuU_U1g8U3q41HhL.aCemuKff0dQUvKMEkgxlkvUU43vuGf2DSVEDwUidbjiAufpvN5Avz2jk5suD1LPX75h7geHPF4xlCG_8XsEwIaAA4Lma2yHDQHOSbt17CiJbtX.nNX58_5oHxlIskSX5GQQzLJACsT2692Py6ucczuiEGoiMdjX9SlOeZyQgEYd7pJ6LBA30ASAwIYvunzKfJS.Ap_wAtBBMvVV188wy6hBGc7k2poMTDE2kXyRLg4pEQoAM.uH8H9b5OBdSJeE4W30hnNkOcwq6iYTGdPnS9ypC_1Mk4EZmo1Y4ej6oIadZ.UASVcFq9NQ4o0x0MMyP4uh1G99Yib9jL2vOOm958sbhebTBxXm87ag1KHthlHDtWMPBTQ7I0.QfIBZOX8WekdMNLQr9ZBu5bkVj6PfFxNTXUhCmKeQ5Zo8A0YwtItq_CDVLgC7WpuKwMXlSOJHhS_lSgwBvrhvXyJtErwFqRYobXuy7twXTzdqgFfrKHz_Hs_gTMzTE0csS.wKUWJUsrDvRFLPyNz6ySCB7KSSfx1uamyqfRe8NOgtEBEXiHX2B3xV_hdOYtlxDMfWg7Xk41GXtB7jEDvHVGxbEft9Ie3I.zh0Pa9AQKeMykxfnpZe5NWVYIMoXXexsYHakv17_lLd2ZUFRnMCeDixJwBZxtuHOTokTjgIvFvmpk0_.otjoNa6ZCROGIukYJTKVcZrL_ALs9.GRgiC99jwo34tlcWyeW4_2ohT81yqBlh5LfyXQKg57ZqVp2YzUJv8KPfe8OLBjGNMeZuIQqldtnlL94_uAetnfFLz73zH8DV7MnL_IySFtmxH9W9eGBrXjVgs.zMKLJLO0vmpxktfg1WXhTxFK6F1IfWutqtsBQ2p905jQelcJph2E4HL5BqSoYQ8fjW05plULH9BDy1o66Sg.hjl5.fXFsZN26jQJgaJWy6iOtNeAqh6yfukR6aOOM0bez4MvIfuUeGI2zbSVyA_FpGKlO22xS2q5ijCKIaPWijd6Z0oYcAfcckOVTuJ9crmZ1Xd7.OlcHK71L68gIiPxnPBwIZdUvvDl0CBeM0jEAU_R8DTgNt8V1P0Ep.jlOjWJd1OyPIT1pdupsyBG5v7mi6IHG5AFwN7k_Wy6Omgq0f5v55C4CqePfZekpf_UQg9Bo7nr857NBYsIeyPCutwlfVXnrlXsW5F4G.ydbYKHAesuqjVo_CE8J7Ar5qPuY7L9_sli4RVSvRlXFN2.DWmgY2WiFGG2b_NEfLG9qKpAacR9sJgRMTvMgrnBFuifyvy69hozL2sG9aZz4hRBdihJv22pDDLXWMjo4lD6oq5c2wsseZ1k9c_lW1RoG0ogn8464_4ZXA.FSDNt4FXIjIs2rYcIjrKfjJOWQYlB27PpujQxOP4rFrE_wY4_MdjgjNXvvG2DR0zIMSWsdC5_51aPY9EcUVD1zygNkXjpwwzZy3s6eSSLn4j4D4C8LclVqssJsarQ4RfcVEJ0mTvN8fu4MqsSzD1WaTbNFie7sHlckfgZ0_xh2sxu45mObzGGw__u0kxRA"};var cpo = document.createElement('script');cpo.src = '/cdn-cgi/challenge-platform/h/b/orchestrate/chl_page/v1?ray=9135b4af1dc94c4d';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, "\/15482.pdf?__cf_chl_rt_tk=iuB2AArTneVbnlwE3Bh1tFKXyxrkNJhnF22DtEwdbcc-1739794557-1.0.1.1-12awM4f.__Dy9TlgppJYUQGx3kRXrDz.N69FlsBRSvc" + window._cf_chl_opt.cOgUHash);cpo.onload = function() {history.replaceState(null, null, ogU);}}document.getElementsByTagName('head')[0].appendChild(cpo);}());</script></body></html>