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,PHN2ZyB4bWxucz0iaHR0cDovL3d3dy53My5vcmcvMjAwMC9zdmciIHdpZHRoPSIzMiIgaGVpZ2h0PSIzMiIgZmlsbD0ibm9uZSI+PHBhdGggZmlsbD0iI0IyMEYwMyIgZD0iTTE2IDNhMTMgMTMgMCAxIDAgMTMgMTNBMTMuMDE1IDEzLjAxNSAwIDAgMCAxNiAzbTAgMjRhMTEgMTEgMCAxIDEgMTEtMTEgMTEuMDEgMTEuMDEgMCAwIDEtMTEgMTEiLz48cGF0aCBmaWxsPSIjQjIwRjAzIiBkPSJNMTcuMDM4IDE4LjYxNUgxNC44N0wxNC41NjMgOS41aDIuNzgzem0tMS4wODQgMS40MjdxLjY2IDAgMS4wNTcuMzg4LjQwNy4zODkuNDA3Ljk5NCAwIC41OTYtLjQwNy45ODQtLjM5Ny4zOS0xLjA1Ny4zODktLjY1IDAtMS4wNTYtLjM4OS0uMzk4LS4zODktLjM5OC0uOTg0IDAtLjU5Ny4zOTgtLjk4NS40MDYtLjM5NyAxLjA1Ni0uMzk3Ii8+PC9zdmc+);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: '913581321d08fde4',cH: 'igv6.wGwnzIQH4QWA2k0Hm4pZb1a8plEohKIeY6rioA-1739792448-1.2.1.1-ftNsY.7_ucfIMpNcErfj6LZSB0fzIeaNxnbfpauHDd9nxDbfOWFROO3N4oE5VgB9',cUPMDTk: "\/10004208\/endnote?__cf_chl_tk=99fIGh8GRv.HB3cuczm48CNAoqtlt5zcjQE.b.A6n7E-1739792448-1.0.1.1-0yeMHIn7Lkttw8CHOQ1ry.Bi1I82Dv7JGofumGFT.mw",cFPWv: 'b',cITimeS: '1739792448',cTTimeMs: '1000',cMTimeMs: '120000',cTplC: 0,cTplV: 5,cTplB: 'cf',cK: "",fa: "\/10004208\/endnote?__cf_chl_f_tk=99fIGh8GRv.HB3cuczm48CNAoqtlt5zcjQE.b.A6n7E-1739792448-1.0.1.1-0yeMHIn7Lkttw8CHOQ1ry.Bi1I82Dv7JGofumGFT.mw",md: "4zNebluoc1W8irY4GubNb10qeeCidZg_ufphEbQYnS4-1739792448-1.2.1.1-rJ9sX4FPAaipNahh4ct111ob5iunRo7_dXUEkrznTtgdvWFlTFsXgfmLQGB7GcBily2otwlKE7tmpojo7I0v4renJGZYiRwONuM4vZdA6oVnfZ_Oxy1Q3VIj.NQKi8c8hn7UhwHBIFk_I8DOXO3pL.WQUo0J6ogVrqogLSTlfgWzHfJ7N6MV4RnYCDxK4f_saw6meN9Hv2iPGT.PewO1.GvePhB3kSBeYAn6OBdreoqgYBuu6102wYUiH.1BbnaLCrUKhZvGhGDnt_.wEn1nPjw6UsTBxyxvEParLK3SYweW9DZ7Eguxn0q6eH809i6ft0JpEUJTNBHIpaEa2ooC8dtLr0N6uoM7.nRhPAKsGayuoWuqCvcz5_ppAUjbXEw65OyD_bPDusgDhCv3Gyc3zV.DXZxr60kYJye12KqpCvtP9XbmytiZRnuOrYz2TJ9VV5ehOXIKGR4mw6lXM2c5Yuyn7qei7pOcO0tQxKuU3AF1pbJZ9iCEOqcr1cKhvhwFsehcoNnANjzTH.hnefRqAoTl3RhsRnpaVElmSvww.zn08QpHYNl48_2jZhZdxpCPQVpSV9l9Lpl6qiiyJBcqU6OMyciNRLPPOxZXWA56N0KT5mpKUiIPrem7j_yF1fvvsasSwzmXtTMNBqsNFt49goUKs75lF9pffKLPdZK09iHSA.todXje1A0NVWuhl2FvHrdTsnn8QNHBAfludcyIi_OrevNoS5XJoayIqntYSLsveVc7KuKzRxS_CIVo4hg_FSNOt9tKShi_mOTnVIuAY21enVCiO.KHJ4L1w.9VBj..F6k0ToGVZRJuBcGF4mNeSP_jGJcCOOnWDxTAsDElFl6tLw6Wi4TihlA2tLcDdcPZpXeCSI_B6swoal3oM3JykkA99iwJlSjvKwfrl05PU1e2PeCAXPGFkJ6pUv6Xeh3tzcEwQn64pbN2.bsCz839fMDhG79_7J1zhAS3SBQDkXjkblRTODNBvK0JAffkgtIjwsFO3IFkhvaIudPyDZEMwd4pzVqh15Xsxqm5Y6BXXL0Cs6.b4CPh8l6Zj.dXj25KcWHW4hgIhwCpyEGt6.tT2xr4zdvMGVGAaqCiTeLvNWsB.07k2_oZT55pz30yhAWSRzZjiPoM1bJdN3CYZy5dgiBYPSa93S_LQ1PURfHbW8BbVEQNikJWMNqMWRIXiUMN.g4PuDunIqZNWOOrsHIpTaJYuhU3GRBANIeUOEOOkxStw0DANW00Nv3fwv5qgsii5PD42Q8yQHFguLzAZJG4ZtoWVRGwNfpPbrf5CXrhCy1Nb4QvEnwoXkY63s8_bc5PvuEnrS2QL7Sa9iltegOeUgofiVkDYXmHyZq1GVPdYQByfO.ugxjyl.tD6HzZ1OJv6xn.VYg9gSNRFgWoYP.K7PE4C19NWO9819vx2EZ_5zj1HbEj5MflJz1Xy4E3Aziuendz3.W3WGYn5jpQ0oYPVHM4ygZqo2PgeFrdxkPYi6gjXU76abGCLDINWfBOvhnkHutUkal_C7TiM_T77JniQXbxcscfZPTzFnl3sc_6L3EcC_zoiqeWQlSmwQT70xRAcW5tHqiHqqZWZCUGGwkc2Db1qNKNDH2fDDa_iGClabdNMVSMIfqif8dk3e9g1gjS44Aq6rksG78DHG_aLhXNxIkMNwn9ReVzZQANoDOT7YJoWj0KL.7H4AqZQdZR7ZxclkuR1qYJ_hL5_YmR9BZOFh0SYlv5.f5bmAukB5XXfUJhLR055Ta5WTuq6zcRAZgkhJ1KXqEVG7Azy6yfS3x9YVegBav5poFeT8QhuE5.hsSJGap6nSTK0Au6yOWWWigPj4j0_odWfLXjsPpM8nXIP2QHxYsxy9COG6yZ1DYwwUMGrmrf_9cxJkFNSvkG2xY",mdrd: "V8KuWfDdfXAR9gfdIuV0uBF5uydht2AD7B2hCDxcrSc-1739792448-1.2.1.1-7Xvk8Tie_aLrfrBMNCcaTiv_Pbye1nuY1Zicoa6z2PAaKWXtByePkUnkfA8hX3gyRrbrs0eUU9Tjm7JeAm_LKcJQbNVjcabAYPcPaztC8C.jxMmyggLKPPZ2NG1zcfN5Lbh0Pbrz7Gai3hpKn65FWugrMuR7Hqq3HkwvkZnB_GYc2qyhL.VqaBMUri7NPyPE6yKlBotOjX9ZTsS9qeUjHk1sxI5lBs55uzgI8JSqi4Fo2F2qEs7A0Vz81w7taRyIki17S.7bVRdV7.JMRYCL7UAreqMskllU6MjbXRJB5Y_Oyw8a5.ngHf.UwcVGOa78AvT8P4JVEVp9KUgzUZkm6S1BqpqIq9jxM0LSptS7Km6FuEF3ezPYj91_oceMpoe6eAoeCc5t4DQ_qljaub90GkS7UxZCT98zkWPAWcKN92lZHrnxduDbuk9sNVqf2wBrZaPuv8HnSmkQrWH0L68Zz0fUTtwLn2yCSvkGy5kzHNDt.SQDqD4PRU2bSJkUuhtfAUxogLFujwYniBqUbJ__Q6x_HkQ..BecJkdniBnmCTGdbEy6S4ZRvGWKirmoJzR78Hy_n3TI1d_Ojw6DiCzQsitXPPYGw_.WvCH1sPXIigpHjqkyytKmiJ7oz0yxiskYhPv0iVCmCFObmPjjeu5IxP5HzDp0GIvPKFDBrFKNZhT.pV0I2Kv_gUdDUa7FyFLpuwPb4rOJcfHrebCJZJlkEgh2_f91GOk9yFkHyx2HOZQ_kC5CpXGm_eT9Gr.F89BJAd7bJsaQZlcO.IXmI7F.LkbNbC_qRtcOqj5D5FDxQTq.4Qgo0WbU5ebd.HpmbxG.MhcR0S9CgNzyKqN9ze3EqnBcilbXxSv2Omxru._hsNgM1lI5Cy549OUKRwUc7lLIGb1qJqOZzsJSavAzcoEGl0tY5ReLC9W9F__klIOcECr1G9G3UdedAeTtNlKmNZ5ygNrXTZZpQGJg.PVvneIJupFIXK4GNXMh8vcWzajm0UJE1Z07lg4nd9g1a9GsYr6cfJUAPC.sgFmbhau8FYoe3y.fN3p3Fs5sIcjSlo0S1mqBlfW6bw1g1Ts_dqQrXMmSSVrHNk3KlSdu1nAckH7X7zz3lMhRFVAzuwd0NCe2bBSgtqlJ0L2bPnp_PtWzPQswb9qFyYOz_yuOGHzBOhEflN6SbUGK2cLSOOBoKYuJxnZZR1bhy1QasK5srB4.8PhB8CqrdUvegV32SDYZ.iLWKj1spLQ6rJBbsuRZxHrbzo0qMDIMK8hcXH2f8zqglKeFIKz2ynY9yOFtsVIPkFwmOEQzdd9TVgaK2Kf5GtPUebZuGVGYdyTVQxVTMn2K4DHa8Zer6O1KtRywa1zuv8SZLoEZ4Bb0cjqIy8QwoSg9WZiuu9V4TyDbM_n8yZTYxRzAT7vI_vlDinao8kCRaeaRtuWLbOviZNtcgcpfNWZP35RurFEfqhchsbQFpDYwJM9qV95MOIFDNbD_3HhkwjJ.2zeLPPSOXAQx5.tj6SFGS.M.ilN3CLY_vWRBZ6gHtEPqSjFVCduOtv1ypfzyFI9Jjp.lL_4HJPxZ4uFAq34Wr6f2fNvbe9.pjKUjBJAMXIp077rax.QkXi6IC.6P6M.JLzqKd4i7_3sakherJipHRnF.8fhjd25pdUdRRFVO6BWkv858yobwT3VKmKaY0sjNTza2lADdwvwHX4jKkVyqFDFxpi21KxXBX61uklpKA7OC5XoV4ZZI5t55jYEMToYDTzm1ciQgJ5z_RyzpHUNG2jRkOk2Jk658D4WxeYWRfTcgUrdTwJoXe556wJ4VZI_b8eONAIMcgLVCYq7hh_ov54bsL3dXXJpL.V2ydg9mcGIg4yRlAhBvA0hDFYDN3622pINp1y8SQE8Jed236A_2y34KG827xD8XZibnf2xFaJutTe6ZH0FIitNed0JBbodQjjBqRqdFChwJXcAQmiFHugLUrRFSYgFQnY4sfFFnEsfYRg2fR9GncqNHKy0cENjutQ"};var cpo = document.createElement('script');cpo.src = '/cdn-cgi/challenge-platform/h/b/orchestrate/chl_page/v1?ray=913581321d08fde4';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, "\/10004208\/endnote?__cf_chl_rt_tk=99fIGh8GRv.HB3cuczm48CNAoqtlt5zcjQE.b.A6n7E-1739792448-1.0.1.1-0yeMHIn7Lkttw8CHOQ1ry.Bi1I82Dv7JGofumGFT.mw" + window._cf_chl_opt.cOgUHash);cpo.onload = function() {history.replaceState(null, null, ogU);}}document.getElementsByTagName('head')[0].appendChild(cpo);}());</script></body></html>