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: '913537f74c42fd90',cH: 'vz8d8duC3o1Aj5HzZFySPyAAsUwYsDWhRy.MWi2Whps-1739789448-1.2.1.1-aEKWeF6fpNyvJ7fEd0rGstQFWLDzFcT4NflxQYbjTGk7dHCksqOJ4qOFYOPled82',cUPMDTk: "\/10005814.pdf?__cf_chl_tk=Ly7A_ubtzhrg3Va0y_JDSUeFJqO9XySFogn.MGwGr2I-1739789448-1.0.1.1-7fvdvtA_LukV30.3RNxPR9_CLWg5bo_hKdgvfF6EbLI",cFPWv: 'b',cITimeS: '1739789448',cTTimeMs: '1000',cMTimeMs: '120000',cTplC: 0,cTplV: 5,cTplB: 'cf',cK: "",fa: "\/10005814.pdf?__cf_chl_f_tk=Ly7A_ubtzhrg3Va0y_JDSUeFJqO9XySFogn.MGwGr2I-1739789448-1.0.1.1-7fvdvtA_LukV30.3RNxPR9_CLWg5bo_hKdgvfF6EbLI",md: "9IA3Khvc2vNJd6BJkuB5P8pbmjbwR584tpefbwaiGIk-1739789448-1.2.1.1-GUfX_4rfQ5hQ6Qd5OeAAM5nM.A_lyz033Wm0SrowOgnN3owkCACwReZsbja_CxQGkFS.XhFBfBi9zq1IhmmYabEWp7jLzs2x3VSILe1WnpuuTozIIv7w3_VB5MawN5LMytYtb32V0YbL42CRN6kremECNBJ1UDIUH6rIAAfSRDDBEiggAOyQ5cPi79WvokxXftFQTeoDMYPcojdF2BhviOS2IoLd6CXqU.NRj04zBujkNMyeLn5HFdDyhCNdVPnnEspnm33CkzQOTuSWaigOaHlwmc6DOCeahZQL4i6GcYHvJdIJyy2sl0bFO9vn.3BLBUamRFpCGqBFaqBg5Va9xj6c7rwoIvhF5W1qs2O1kR1FSF9XFV6wa8Zj2qvH5g4fUmMu2mENNc6cUnYM8BTfKNFCm5YaOW1l5hbC_ZANBLt8R7ZJRx7nuzUtMqV.UL7_hkV.goDySUAAJctFp9NcBatAG3.ri19LYJL_a8K7kEmEFoxL9P_4icLXyQFae_MpuSsy39D8yxEvAhgM_cZeYi1RbUty65Qb.f6JNF1yzACrVNRt9_b12dtgPYoLv.bdkzhOz19cF.a3DJN2ac6azoMWXFyG2hqGauefS7PLNnR1M9XjNs54GdZwxmNpVcvVnNY_x365aua5PeFWo5o84JljroWEjVNnXcuB1_zrW0pbp52tc3Vn406rwAIxAhbPKqNotWx7RmE4lGfCuyFbYXChuGrsD01NZhtpXGAwL0FnZF5jiKrshm4HNxB3IE622E5y9JzvsJ3P1QIYxKmhe3MmQaKdKhmb9erApBVVxP_7N_7oeocJD856Pv4zciWo5DARMeu.0j4ubkv6.kAWDeeq10nqkD1wjLuwC205..6tR.E1bQrtn89COMXi8tsCmcL6qzhXqd5QIjxdNf14iYaJAO.KKDONxpTsr0NICEb9fDdkIOO6JS8Urq6rRgWAdA6fcv9VdKCIkIi4DVEdtUCKHnUNM24agObrbWqua1585A_UzLtgb0Zd9WxNcbN7KwqTVCja63ar9CaxDujozkmbO.s.FWOIHlFnTp9tp__zZMO4Gap7GNx9IxKMR9uaFjiuWZMkJBa2SGll7amB8I_thzknE1PxIygeFNPBUZ5C0dEmWOPKXN414t5KAh6ANpyZKBEDqdQ37bPjh4jWN2w4I2TR4J4.1l90xm_3kBrrgnDUzBpySw26zn6UQJ1t9zvMoo.dYY2fpPvYu9kmNAGg8392MLD3nO2rd0Qm.TJGyhdcU6c.C8CDCzCuSiPFl3_yy80F3W_lqRjpgQVzzC.v6wL21WJGsUh6oFi.3MMVxdh0f.nsFD78fOXrRdkiufjxwoBDeW5tZKTVdUQ80ay4w.uhPNoxJ3VTMXekt01su6INqHbussqo8zgooBtf5oeyE6vIDBFX48IEPI6cECxEQdioxWAPStpcqo5z35D4m65JU0MsKHEsat1cECHoP0euQwSUmhqsWT.b_pNH1S0K80pwZdxhg_BsZzdZKkdbpPtEfeECpeAJDVFyPOQxKlh4_0X3jeGX6Nla9QMVh_PQVQUviw0N6Eud0k3YGIxn0bbnITO.t1rA1veWDACNI9NGsRB84NykP46eoF2Tb1KOOVmGeG2Ainx8okgiPydHbribDhhIyZ0QSn5d_Ooe4T_NDx3zdJySl6zQ5KFEDfR0kNTJ4FMJyu73lefmVBnQmSzcVBve7CyIJDHoPJa18yld69MyFLxgNnQDXTTz_VCNA9dZ5z7zh9LhgQxIUmYDKBXUrLuhTMcttZyz.hLQJUgwR0DCqTC7IE4WlrY4KM8izaaD5t6hNqq.fkaEKsof3cxRSS5QFE6KgXmcX8GFRzajboj7T_mMlSeAeD62iyHhBcVOrKQIrnpEadM27rA",mdrd: "gBm1RqJ0AEgLC5RaIUee8jBAcvH8mBJNBAZ7rjAA5.k-1739789448-1.2.1.1-i0clbKDAITnVlfdDG65fJ_HdCq.b53MTZFPe3eJw3P7FC9YHSv01RqSvOWJSSGJ0cwOdW_lbkOtj5Q9w3d8HcJeQ06iqsHqmc2nIZGB1aoCkGmdAIEd.SOhFFEMnCNTsawhi6zbuYogK6sy41QiQyNC9NJtpEaxOZldYYahVhMJIG67C7wjpqKTKaSt6NEugb_KCWSrPTW9_LqrTE56sN4yDhCxFPNA79eOPX0tbbPTxm.xXw2Imvn2gnakJ3IQ2PLINjXhCvadUO_U4J1hDfkkq59ZgpFvlYDrf..6FJ8YZBMWdd5Zd_AeqI3nEnZDB7EgvP6M9BK0Gvvac5PZnv3okhdIDCHugjC8quO3cbjH1KHsbFktRSdaHWCOTRLOT7uhlDCvhnoFbNaJVAUMIQK74YyyTcV8F8iII6EjHrnFaIRwHLgqxtkTL9xZUVB2woSpeowPO2vxtgQhg9d7OK5eJcz0aj8DJC09cBMmjwOeH8pP3fol2mo_Vl_lE_G_aYJIkpD_5XBFij_Ypb6X1vcxss82ocKT9yHHAMqULoNEyUmlphTGhTMMFRG.lQJIPDnFj8QWq8Ejn6DSXroYfotvcRt3v176E4WstLSDF_mANvuKX8IPZolKKfSbO7aA5tMFB102Bj8z_x89l.oS3VVzOoDLxkzGQMzF9bmivFAoy7Sf5DBJahEHO_LCosx6s56g4qTGptLApOuYhddY3FWb2GcXwXRLpUTvnqJ3C56_j0PbbiclFgNjPGUKM2e6N5JotMmXKJ4TLRwrsP9EgQzEggZh7gNL7ks7ZdLIHYsHB9LBxMiAa8_62FdiZx00TY3cOQ8hC_J.frvKegEcmEnCL270oI7qHr_ma.bWgIBq9699i0jHp4_0WvhVhK9JuLMT4.aLkNksE_rKDXNMqBlE3FWq3G0kCTSVPgui4QLIP6OoAjmZw3mQooWS7JXduHH.TUAPTksLsadtb6ztC_imzjEGrMEhaDpF.3yP.ql4XPbUxAxWNTZkAFCSriX7SeJmdfNwV4045KVN21E8Pqd6m5XK39.Lnjww.rPC_xiu8tZ7NEaMYz5kY8a0FEDbP0pvJLeGZExTBbElGP5tYixxaD2joozyCe_LxckwSoqi2sMDL2pqMMd4V5cD5iQA_ej6htwo7u_1SxmrDGPwHMBpfdjMR6UXie6vI_HOpPqoFEjBrx_wQBj1Vl3vvTqWQ_5H9Rcc6sfXP3lgX_IwPXdesOlSmOC12uWVOkdxG8CQkWhKcj4TMovLtDlMrxgtCMcDuZ9BIUVoratHy7fr44.Ys7j5G5__lQ5Cw8VXB1airPnu3EymrY8nHZgjJFrmzZh7p3FVok.KQV9w1DA77CAdSkzr0DfCRw8Nnxm2JRl1fOYmlnjJET_CYTkllrezjZaFUFByyR1Vdkeell4yXCv9nd.m.qtejvxC8.NID2ihoUQqC5feXu2betRIGm70w8ur60hKVd.yU0JD93Hf0y7K2J3FpE7.V3zuoQg0VCkKvDbNh3ADdl.ugfBDL5VG6y6Vdii85QozQNdst75S1oUuQdtE.GGzvy_ceoDcnjWO3RrvrnAP5RW66Ce3xwlNjd0hR7iDw7PqvmTdV5eB5A.vZ4JfmPZRla6voSl4Uoy1oMEqhpltDCyiuUaKEcwt1tA26Lq.1boOyCN4cZ0lx1sQI3Yq.5rhz9QOgB1Sx6IpvkLKQx9fb.a.DjxewBOJLj5Ra15BdP2zqcDcR8FdEvneJtOx7jn0TNmhP0vYEz_hfy3_qhH2_Y0i_M9RVBaC9nLs34lpuvhlHIjrwT.N0laCbgB0bhKOo20rKq3DlQYIHS29DKX_LzWnUnoSZNtCmh6_l7CLTJwfyN0.YM_O1RPj5FGyO4Mu3LxG8bF1lSLx8HvW38WvsPVI95kJbl6c_WzHmoOcKQ3j6uctlEmvzQAY0xu579vkRMA1qCBLanLm89ReBdFZyJGFn8U4QrYQJc79xQ2NxhEmQaxW_n6yrcA"};var cpo = document.createElement('script');cpo.src = '/cdn-cgi/challenge-platform/h/b/orchestrate/chl_page/v1?ray=913537f74c42fd90';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, "\/10005814.pdf?__cf_chl_rt_tk=Ly7A_ubtzhrg3Va0y_JDSUeFJqO9XySFogn.MGwGr2I-1739789448-1.0.1.1-7fvdvtA_LukV30.3RNxPR9_CLWg5bo_hKdgvfF6EbLI" + window._cf_chl_opt.cOgUHash);cpo.onload = function() {history.replaceState(null, null, ogU);}}document.getElementsByTagName('head')[0].appendChild(cpo);}());</script></body></html>