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: '91340104ba67fd10',cH: 'dskSE8To8MElFkQxjBIGicLrpzGVU2EEwHxLMTaxpDw-1739776712-1.2.1.1-FTvAJujZ1Mnx.2Ay0crykTmRxKmyMBv04O.z2iKqxy8RfyIfhXXPbOEYAZlZbnVS',cUPMDTk: "\/10000644.pdf?__cf_chl_tk=uKeU2pFO4ConvPWRixOshcZpe2Rg4zw0rzlwh8rMEVA-1739776712-1.0.1.1-raNspfPSlHBm7k1Me5ajlDnhee1QpBpExwdpG3DfPXU",cFPWv: 'b',cITimeS: '1739776712',cTTimeMs: '1000',cMTimeMs: '120000',cTplC: 0,cTplV: 5,cTplB: 'cf',cK: "",fa: "\/10000644.pdf?__cf_chl_f_tk=uKeU2pFO4ConvPWRixOshcZpe2Rg4zw0rzlwh8rMEVA-1739776712-1.0.1.1-raNspfPSlHBm7k1Me5ajlDnhee1QpBpExwdpG3DfPXU",md: "o_vaSnmdS3hbLX44z3XkNlOph1hlkOZA5Q33JjHqA3c-1739776712-1.2.1.1-IKfYowpJl.iHL1bc9taxmF9whSMNWKVApEwNg1LrwBFfe7T6BsXA5FO55qV1nSCVAX8UIzpxNdsGkEd.rKKLllf3Qt_OsA6NbQ0T7DC1J76FMRLe4bB12B7RERVm_q2WijcmDe.z5MJaBF8g.4IOnZTEo4NQZxxX8H.Qk8iQ7P3tX6ZaouwKYkj0BXsKnBU7UkJ_XSSBXRRlK6GvfgPO..KUwFMKvo2COKaPET6tz7SGSNCA5ZFAKbaZm4czg4K18xVttCv.DizxGUOevzgSqeKO5sJ6qZcBP6rdlY5_TC2StoGxkEIEAMFj3bftRbeg9gM0Cim1TJChJ2AtjyoskiNPtuuf2ktmsrMlz1NVLifGItACteTr4Y1VS3cEJ5GCd0g9FyaghlfXjeXFf2_6ur6dLih9HhT1_SSOa_FJSXg2e2RNsnXxMZJlzc5gEDnJszWWj49DBCCsRTjg7DGZaUpWkcDO5rAL28AVA0TFp6MZXWnIJbhjBnH.bH_UKcGGnu0NB0LhFo0k1hr.A5yHdbmAdbUqFxOQwa0KjUzSqyAO17TviqFqTPsInQxRnx2RnbelKQpQAS.LVCKg.hczFky.o15vFsxbBd.ckhh7Geh1h_UKob3cKxMuLhMTJsyejakKnwIiM1LfqGBKp5Xi4JmRs99SFhn2PsQIu6Hqx_98EMLFQR22XzqRLvk5TGeibW89YuUGJbpNMks7w0ZbDZeM69gj1nJsDqNWP_g6N25KdCk2TPjQ8CVflaKg6UDyz8qsasPqNf_C_Qxpe1V5XFUGz_.uaoG1uQPE_TpN1D7Ll5mI.GvbLjiqAxJMGD7SB2zwCdvQVfTQ94OBYLM_lre7.Sl3lYLGwMVlOhbJmxwN3gIGiKLon_grn281Pryvbqf6IrW15TSRU0KXMnZcC7fB.9s5EgnxFaLJnFO7Fhpyf7xSSup6gwL9UT7NCKNiXkncYPgaqTPpFPKQSz8Hj_3FGAKjcShAfR4hiBNx.VupIc0C6hb2xX9wNGxEQeUvAWjY1bXuVgLEUDZSnXdvPYEpUJgGfYyoWGD0kWRxqEoM6jV7ou_nsEZ1rMeoYIxHbUCkpH7uRXIn5qWwjTJ9woFFTVMR8DFa.KKcyvn70yXdfqf3.1Fq5KXz6KHKJt4IJb1SR2ZmA9yB.QjeM7TcyK_818wEJMz9tdT0UftYJa38sJam3xNYM8mMBBIUwfDG6Xp6RGcn8LtYlA8WQtQlFlvoI4OxDvyllL0LO3gm0UFWARYh2R9VDLszKNQ_Zv6gwQiM6RHZFjsGissNefzjs7m0Snfh3ubbWBuFUJs_b8rlOUqLZofeWfX38OGc2EOZ_TgVnroLqKuhm2Q8OulioUM8QInRFyTPGJH08vJaPnbGO65hqQqtHiRMD3n2pcqwI5xv0Vcx.bSfbQc2S1bj7MoDgutjhhABOIupnsJo6_i5Th9xUINLwWf2wJrwtHuKEFzKOi9QBOjJy4oPGw2ZA5ndEkAh2QFfpGb77k1z6dRNe6HQNu_GCXV5cU79DaPJzdBVISVWl_7t2mTeVMBz.VTB0KJLdrzbZyRkcN16faKLuflgwz.BwKF0hS5irMdCRqoHhHQRRS18XjigKKsKmZNYM3.nggjAZdjQ49bMm3pApc87zC1QMo1s3b5IvQtDJikmmTB4mTyW3Yeem8sSgPSU_Yq.oo0lfOp5a7NBvXGxTSvkq8JN0o0uATJ4uimfp5wFztC1EwVf22CWn5Uq8v35O5BE6_DAin0O_w3GJi9R8mhTEoZytO_dCY7LJmZPkdeQ9Pj.aeCasLCvDclEU9Kc1IvlrW2zTIQnsaULpF_c9qRpdKAyWGYfDWVP2R00wAcjS8xFYWXG74UBlZyLpAxZg3YtrWFaLf7ibLYPSqg",mdrd: "fNB.uUTjGk4ISOcLeMyp6iNAm7oEIIcLI7SmPkb6UVY-1739776712-1.2.1.1-EAsrdDCmAugV5MP0YdyF6XYmMEIVDNbq54fPAYEGzvlKtTIogJbEXk_4S7BpIEDjcgOKt2yWoIPLPB862weGZdY4lPd5yPDjxxUhuWNz66GNZ960qn_p0LCmRqGZO71vFe5ZIDrQZwZ2T5C4ZSRi28lEPTFwEbmaYeBeTnV5nR7OWRfzoqOVHGarmu8aUKMi.XRUFy2rH48yQTuqQp12gQ6mXW3NL7p3KrYK8IVp5cOCHf2WGJ0IzI0h1b2XjxKoq_8pvQJfxaodk6n25tfw.YX7c.cVztq3ZIYiA2vd6etbABG8knrKG.1rV7Yz9RyeSjjgZ6r2Z23ZwLFfkHHNts8tVgcjOZKBSw69mR2KmvXUalbMtRlMcARpd1gfmj6w6fxqCwz93bwfBxX64dwnDY_25YUlL.hLLbscZ.rIwtZkE6j_poZMm0_DaRgHhEvqHN6iemh2gcNxFKGQdVmYsHYOQ9rZwX.qcro2mP2yJjFOGUpU1bHYaL1b8.63BXyxZCymJb8YH2RWE43f4gaXGjTqbuv5o0H2GfTlHcC4gSSPrazT3nA90LZhU5xuDxjIswxk9aKh.OP8j0SWij9zUSc3UdJAZvdyWV6h7qUH3EbC1nnRF.HFLPVCXsmDrqyc8QRcW2fehLA.oJn_vEVl7NtZWb7RyS7cv_jHCRUo_nQNTf4tQflN0H0nx5huQ4uXNuD42lBxH5JezGOawwisi6d6Oc.4pyK3w8EpAOF6SS76wkSgFdrmlH_pnORdSBfjnxW7fVMOEcu7kTn9iAYVgX441kmWd0qULqLA4pCsez3m8dfR69WjVMj8fEVyIX7Oa1X4VJebaUZOKWlrR8IbnExkG5s8Kv05.38k7kDJm0MbEp8fcRBh1Xf0r5pMUPofGmmdAEDin5pQp7lLb43fhIlutVZfmxMAyjnGm5niSnnZgnHEia0OdwvbYJrxBsjrs0vSGD9Q68tskx1XOWSxUAqWa.T9BDEqcLJJfWQKk7NhNpdyeJPprFbXpn01FoZxTNyWwakhLEZh88swM9LC0A16JF2Jq_m.sOupg0xtVjJAA5UsngyXF.c8ZPXYmpNX16TmbhJ0vm22DKNp3jWF1h2.lvLIw7a5f34I7fS5nodjaAErML3QcQP7rWB5wE2ag1kzwOWGsovGUNzyWwHDlIhOypFeF2b3WARjSM.sDR1v33MYrokd5Kd81JMSyB5bi4GZeubjE7kM94VCD9REO0f4Fo6KhthQ8lKbAkno9DPmzUkr07HYsck8k6rOsOrAKmyd4NMIRcKmJiWF1ASjNzKbToMjlMbQv0kFQbhL2foJ6i6o5zQ89ITGxKHmgVJVPEyZLX7RnrWH8tWujuZXpAVmOG52jd4SYNBKM59qwKnu6Bu0b6b0dXHI6LGzzWcxNGE466QHOpHcQe05MEfGP7g9dzrEXa4KKMrDHw8h4DpSfS0gDgjcya.bqNuVg2n.hm2n6eMdhhwMxhPcovwBTqK7iyjjot5zxxxvSg.dZqveaMVKw50cZW2j9fIeRIVvB4LleaiQY_I2H7jkiwQJtfMiW0uIbF1xmRVRhshUF.3nbtDNMz0SFJMATEgiKpKUCP3AojiDh9mfCSGqdxidS68JR_w2FO5lwkv79JQfIYAu2_BqMohDW0VI0Ac8AdldKIGwd5rRttGYjo.Q3v8Pu9cclRSbnU1oLQgFaQBsWHDRwyjh.Gh_jboHX97puINK3OdjvOHXHtYE05xDiRXRX4Bv_I2sNt9okR_TJ_b3HMkCo3ZF8bkZxGjtfKyQK2HWW1U3bri6t7YwqEEoEfP_p0TM4A5sWHaN7FzC7hLpfW8WRSua2w82D15rAe.lAB14tLXSBL8J9Xc.cqEqf5N8vqcQ1CKJtfRAX.H_QzqtdgTG2KHFG43wO1gNyGrdPK1QTPeGfi_FgCVsRZ88Cg8qED_ujuklxDrihMj2.O7aDra.rCdEAkK2SlSZOTbNXEzMB34Yjd80c9iwSP3VqFb9AQ"};var cpo = document.createElement('script');cpo.src = '/cdn-cgi/challenge-platform/h/b/orchestrate/chl_page/v1?ray=91340104ba67fd10';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, "\/10000644.pdf?__cf_chl_rt_tk=uKeU2pFO4ConvPWRixOshcZpe2Rg4zw0rzlwh8rMEVA-1739776712-1.0.1.1-raNspfPSlHBm7k1Me5ajlDnhee1QpBpExwdpG3DfPXU" + window._cf_chl_opt.cOgUHash);cpo.onload = function() {history.replaceState(null, null, ogU);}}document.getElementsByTagName('head')[0].appendChild(cpo);}());</script></body></html>