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: '91341bfe784940aa',cH: 'xE5cLBSZQ.7eBqJEBlobfyQOGR53UMdFq.WFZfXVOqo-1739777817-1.2.1.1-D8Ivm7wp8ljkHQZeXSwSTu9jpYEGeZdPRXfOr1jxEEO4JME3gkU2UJXpktq_UHP4',cUPMDTk: "\/10005022\/json?__cf_chl_tk=9rbGdi7010vyjSkbLGowDncp5TjUnVdZQ2_5VT38.x8-1739777817-1.0.1.1-PlHAklXbDClFIFDcLdxJkmTGFyLzBKSm36aJIWKiDUk",cFPWv: 'b',cITimeS: '1739777817',cTTimeMs: '1000',cMTimeMs: '120000',cTplC: 0,cTplV: 5,cTplB: 'cf',cK: "",fa: "\/10005022\/json?__cf_chl_f_tk=9rbGdi7010vyjSkbLGowDncp5TjUnVdZQ2_5VT38.x8-1739777817-1.0.1.1-PlHAklXbDClFIFDcLdxJkmTGFyLzBKSm36aJIWKiDUk",md: "X04uaTwbq66xtedQs5swowiDljx0QnOavFAutfzZB_I-1739777817-1.2.1.1-VPIrT93jcc5B4sQcw2COJyO6dN9VB74Q.jDSfAbKgqUlTcS6Aoql.bnGqBrZJovYk9SKQYOp4owRULkVcx2haNeCGXGHvEqahHuP1NhtzB.LIiCAvyPDHk0unQEadjhc_fABZLA17Mo_qU_6W0SFpu8lc8_qYwxHJMjHOqKl._SMMjWreZR_X0xlxE9_bkWWs3Y1Uh2un2eUsA0AWnPdwbI_coaquscze7JuTpqQJKwAX2.X3i9TMDXGT_3anBkXnB4rZ_LSonNtoRa34SC8XH.H16lPMUpfMvrU8FJBcm9HdtAsMwv3GfLp72WLcwkjLxM6DVl2zKLEh3_gJ4wTJDB33SJNPwU11iTAzRr49tGkaBmH2AOSl6UWEAkyTCT4SE4WbRdPJlVK12Af6daJt1hlhx3EAezTpb.nHPFuPWJUonC52D_UwoSUpqbFaaGKNBYdVpgo_Eu.jKaiIW2UrsYwTsIDPUZ0yRiZERyJVLpZY5rodc2gabI10bYx6yHkEVMTJ_6XIbTNmTn50cHLLNXdR1uI3zULNEozrSg5SYmAyvE5Ikyw.NnQkCyX2g.foYBfiGtZpRpPhZYWZYikiokoqnQhUCHhXMLOgV0HwYmqAke6rIzm9iQ7NuuLiniWO0LnRjT5NHitE3qS6NvNR9NVsaGQAS71p16QQ.ojqwbQzyESdR6._YSYXvrIpUK22mjrMQniIE7LrTHO6erZ6Z2pU_I0x5BjJo2VCM.0akt3JbOvH8cNTZQ3m2DKOKAPxpakQTrJ1hK4_UjlZaHeHKe8i7ZAZQ9RteJhBTJPs7tTqQqxZCbfg9qOTqk.fWQsu5Xm.GiizpUfw.shxl_bvUUQz.mocKVeKgA.R51Ov3JPFFx1Xpwsmu6BsLNZLZ_LllyUyAu0xbHDPCTfz9cPUjFE9NqazHwqepnxvY13KHw5O_lDrnK5pG1nr3As.zWlb26uzGxvCUQRPmAfbc5_VXA04KQTfuxUM7ChCsJ0mnmPt4x8RtrrstarKli2NwiOQPMSJyqBtwgKpTyfVnNf4Yyn0kYik7N9XCp8slnHhPueP4PfrGoRaR90ajqKZw3KQ16EfqnGmtnDx3FnREFb7Ur0YX407HRdIfahKn.v.PlbbzWvHzo1__aurHWwzhKmF3ITNAO8XQF6duSJ5jrc4vCCP905fTJVZF38NtVVUpCsD3Qabb9hOipIjDn_dMy_yOveltx7N97pVvVOeSgpyC5BHCYKs0aNJsh6DDNSbiPRzwax6ucKees_uZbxFZV3657SZ7gess2KsmNFCTh8CqfyoKB1mIxXVnEACHf6yBO8ft4OVESpQmKn5q_aUxQk4gWyfhWGeh85kregeG7zECGPwyiBHYikwMGUq87K3CGgw5XNh2TwvZ69swLwKTSBVay3HYFECGhR._id21tYRalXpLaHyWUzuC_PW3aKaGONVbNpgB_aE9Pj4zOI1Gh_8MZ5mlfYHW4hcmUQcFjox_6PWr2EIS2EPiDWUNsVqnXFVXoA.K6rFlp9kbREugG32cGkcRi0NPa.9PG88O8LQA7Wa1mE3BJm6ZHGUy5kxO5LxKMBKU8lbz6sAxHA7Mn9zswP6BWCCt1fNjMuRu23rkLAWrCEjrI9nCprf_ltUPBq3sk3XFfG_aO9TuZGM2OI60cy4UA3XM7AK_Qvcm_0BhxlN3GjAHkHBUHKySqKEZSDDaA4GAdUP7BsBQPUg8JyfOnR1Ha4UCzbtSPqbaU6Z4VbqwpoLVya_4ITHgj3KekllA1kZenLUbaN_lyM0TUOfnwKjcTcD1Q9Qf96TrBhuXCfSeACcKx0Q47PpjN7qvsDl9vEL2ERe2FOD9wkbthx9PPrbU1kxHcne8RC4wl28zjd4xHXUFuUKip0zDkJXkQ",mdrd: "R5G7mKMIFk9P7ifvYJEb8xygqsyGdxtTBdoRe3SXd6o-1739777817-1.2.1.1-4RQuDODcKndusuTJT4QYF5pkVOUnueG0KQSLyo4ElggrpOJ0vy0Auexf7PnUwLs1imk5iETQvmvH_epdh.LiKbwPhC7PWl.tfjdkb6TCK3DhO21_2Xxtu8_VB9KhS_qyhwO.9C9Y6OHzN7YcJE05GnOW5NbJrWj4QasRLNwKmvhweQN4ufJybtFmZqAYiCp28Twmv_MgM5Eb8GUBS1PXqUmrXAfS54itJ3WSuH0GsWrt7sZpqCc5._A2VSKR4pJ9u3zq9BkWptGs2rEmAA.9hMz5zhBlpqO5ieZL_5qVoZxNoFNRlcxqDDNvKvKHyYSQ.nPb2P9Vy3xBuHqC371uzBU0rgbEX18sO9wRJlK.BIR4XhAhDxty.8YXmyZfvH1QXWUpysJ9xELfyMszF3d1zuM039RVYNc11ZSYPHPgbKf5QrxL41GvhNrHIzUNLMw2iI4D2A1qih2POJ3xn0Hnin.TeFOg_KZ_BilGI3njFtw43FedkY4ngfZbOsq0YjD60kXfYV_c1u7RMM4.ZhB2.oM.KR2zSaYQas7ViLi99LY4VWFeXmnsAWYfzh5FtQv2zP0TzaJi2IO4jMi0wME7C.8pzr4dzQZPZ39Le2K58bQA3fRpNeDKeHPiSjIyLThGvhrvFHksI4JvyPFsspDkaZkH6WHavCTsgXNHsJyphLLdKw5gXAsxMngqBZu_vIMEvsfkNnl.rYFMu56_WzIBAEvDN.0BrQZofkkpaHBnVkIaMLSn.XqNglQZpydBFDBK.AgSH7s5kkKRv_KodsV5qZvyz15PHURSI3pjAw_qUfMf3BQpHiP_dAVlm7JjFIjIietjTLVIM6hlG2BAcc6NFzNbI8M.TNY6tjtXPS3d.0Xe2A05O_TCTWJQyQxBEEB1GcHLIRHUhXotFjcXYPKsat7SZWMw3YJ.NhkW6xQwQ3F57i0Gjd8WCSgob6S7T0Dax9Clx.m8nqibf03vd6plfiNDQLyFrt0eZyQjtu.Cst6t_DvNl4ZptKKHm5qtiER_uQz31EPD2QIRioT4ZIqy3.vqhJ.B_Qatm1d_OHx_aXM.8H.IjAtFDBjjw7fSWwB3PYAnmL07aG53EC_fCRWJdFzHf5ZXYbNO7AXs7jun1h3aUfj1T6WsSviv_hVSq5DrhcfJ1g_7jzo7UfHbT65N9.aThI6bIiOyVqIRfKRkGwdxap009HbmIqg1WaEhlyedVEjNbYgaFBgNbxsC.EUPQ9t0Nu0Wkdhl58XAg4sPSj9qo8dmMpdVpLT9R1cw3k4ISqDV3iQ894ZQ2AoqddytCQ5KevQxoJwx.51fcVNmZ_b3sBZmFPDA4Ub5.wdeJHzuheuYIxvnc6rz7jJ8ocslBY1RzivbNEFmvQMiuYgu3QGxUHmuBZ6e53z.aYwlJ7NkL2MJHE0WBotkvDjTwrMJKGTR..aUgdOYVFWsL0ANZdkDGneP8iKYQ2ZOWwoBx6E7N64__Cbrcgqz_JrFG.jClbqs9QlS7k6sVxudhduymHzo4HmL9tAbnMOYbClrZtYnr0.1sE1B_kf.GZsfPKxlk9qU4py72bzTjEB0MiIDw0EtGNPcKsEsg3B8A9QIZCmhCWtP..hrRRta0EoBUtAaxa6iUmKVCNdI7JGZdXG501QrKMDfh2i8q1IDGbXVL0IGWvt53rp.CL863vkT12a1J7uCstJdZvoBXKsVhPz7Yc5d2fbrOifNhP6g0vjcDmSsm9ywqBjhtenRPySE795r8tRZn86iadH0Mp2kD2VkevXDbISujCRSogsAShdte0mCAEJdKH3_ssStMXGuGedN_8ayQYDo.npOnUoSV1NTkk7bPe1XFdYsi.b0UHQ0kVczw03AppTfaaJd98eCkKAiY9zzIgugbJ_FqZhVLv1gw83aCn8WrwqhMRSavj7cTNLW_fDz9usfVKwnd.zgK2tji.VPiMEeOEY11p5uc08SubBb7jX2RbuKpr7ye_1iygh.4VcOGxEqhZSj3zM1y5kjDw"};var cpo = document.createElement('script');cpo.src = '/cdn-cgi/challenge-platform/h/b/orchestrate/chl_page/v1?ray=91341bfe784940aa';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, "\/10005022\/json?__cf_chl_rt_tk=9rbGdi7010vyjSkbLGowDncp5TjUnVdZQ2_5VT38.x8-1739777817-1.0.1.1-PlHAklXbDClFIFDcLdxJkmTGFyLzBKSm36aJIWKiDUk" + window._cf_chl_opt.cOgUHash);cpo.onload = function() {history.replaceState(null, null, ogU);}}document.getElementsByTagName('head')[0].appendChild(cpo);}());</script></body></html>