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,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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: '913673be9aa6fd37',cH: '_RNWLQQrpMFQ1D5zQeB_YYq2VrUEVWMn8hg.Xs6GA9s-1739802383-1.2.1.1-ThrlL5U86P3kiALJrWpSfmjOgR7Fm7G1__rk1PsamVbIn3oXfXWppQRQGy98wvG1',cUPMDTk: "\/search?q=Score%20level&__cf_chl_tk=CeFXY2jRidegU8DVqPBBMQYPBRnVhluaTQNaSl1gmYk-1739802383-1.0.1.1-Yhf9y8Y7yj2aGU8xNz65YZRX9rwARDNshDLs54F24vU",cFPWv: 'g',cITimeS: '1739802383',cTTimeMs: '1000',cMTimeMs: '120000',cTplC: 0,cTplV: 5,cTplB: 'cf',cK: "",fa: "\/search?q=Score%20level&__cf_chl_f_tk=CeFXY2jRidegU8DVqPBBMQYPBRnVhluaTQNaSl1gmYk-1739802383-1.0.1.1-Yhf9y8Y7yj2aGU8xNz65YZRX9rwARDNshDLs54F24vU",md: "XMCYAqBhiePW1Mg0qZrmbPHbiy0IIteYmDTXG5Y7TVg-1739802383-1.2.1.1-l3Q3tilpd5F1g_GAbKR9_7d9ZixOx_fxNc.Tg6v9EY6gfTDqFx39zCLLGTKrD7md7oyAPVIXq77STODON4TmCfE8wxpSveONdiMFWp9FaxjkPI1wwMalfLnyjQPTDzE6xRJkGS67DnzVEEPgIoOJ_HFer8neVQj9lpQKlK6mYJMewSdjHomgTQnIj4pEaqOeGrlWMXqocei47T8jf5dXJ2Tk3tFoR5t8CCfno6B62bXE9iPRM4jUkyJaYOsQQFBcycq_vzSZx0v1..IIsEWdgEN7Yk90e.a7i_nl6QuZrcIU3F3aixVexspsc8vRVDbiuzpkmsT7ITm87_2ihwAUPAHYkIJl.ukPyaJU2fNWIo52dYy81y6DJ7bO4hbocBMRc4ZKbJkS8fqPSlh1xFvzgpnlZawPy8K1W3uaxMP7TsB8y.3rkSw_E6hyTluABrMPOLyBPUu7rFUeuJMnF1cMnsgnZUMPsmSLtHWwvtY_PdYf_CsTWTTGFWQDLIf.qTy9uq_FULCLoTiu2pludDxZWfR8yBGHeujMHjCm31z5FRTBz6.cgGhWBocKuqog8O.DMNTaDNDICKC4JB0V4tQbOFDUAmjj7LBATe4.aQy6yN9WUIWk7hVxDp64CBiYy7EA8ofJk2IlGnPe3Af21PkHs4tRyu0E_rQutdjBxX_A9m7ZZE3VI4hpFBWkeSRx5vNcZeSySAHaXpNvQx9ykpLttN1b5Q3nF4kFlyizgUCYFnEG.kWbAm4aMAqu.1cBuCdtJL1DWld_VU5iVn7GkG4JZc_BPs753ZJBlU.RyFLO6VpuS04L40dVUAoGR6R_FuxWpId5sbzuubh6ldt2Px8242Sd4xn03d.a.l3p_ysK2xUsW7ofBzTN3ZcalyUKwCjZY05013wjIKxFRzrH_rLgAoGxL4sUajnVSKGUldVoE3acVB562Q3nQFgv.bgQkZljaTyj.Oj3y5xV38gZ1GeSgnweAR2DruMV52inve5OSYesPRSXpuL.49JjhacUKyOVilav80kZSUKixjckoZPkJkLigNebmr_E7b8ADOTnuWtnOsher0WUgjV1CVMQv8DMZawuc6Vs_ME_KJA5ElWtIOhqmLlY89c1lN9F8yjxhm6yw5mJO.hrPlRz.Gb9CvjVJ1asgceyrQZFvnIigksfbTD7YcY8f1dftkna3USHnkSDbLJm1kvOwszWYXN7082rbyDuwWPpRUdeAXrcFmhuHJFJyhqsvIK7XCX8rzgRn7DUkp2qCpvG9e97HxOuB2kxXUsb9xfzsOSa6pOyL.dBjzQ69xROHgv4l_AcjHVRdmwNNCEwqnnLlwJ2H5IusLJVICpC4iHFJe3Uwzd6.r7HG62uJEBkO2YeJu_ynk3zeTnyrdlu9VNo4dTbOuaHXDHj65edT50vLT4BUA7hPHAkxXY9HbIZelXPlNa3YCuMJ9R8qm3c0EL0RfJB8HPlJtVlETDepZdT4MhpCg_QEhscQheX2svjSbheXCXv45h7rbhdqSlkZsGrGqxLU0O78MsFhSjcgGnNl9VEitbbckV_iNwiLJ5yHcDuOKXFRy0sAdZY8mZgOD4jQyzPuo4QsJhB6v8RSXX3.pKxLcimvLSUpm8Uh9hDcNqljCwuhHLHTZOy3N1dbrem4fM5YnTi4XrII3w.CC.5f7XA.MTaNcOmLf1rBPcSlwOP8MmVgXqSU1NIfqDmyC8BRZXt0tp3DNM9DGsj4GttOeH7_7X0pBWSTEvY9ZT5CGEFRJWfGBTYDtsJBXJlwjNZ5TzhwisGr31JlzmVrFuAlcwTilnBMlEuehOyzdLvBh1fca4lwE2sDqSNHrbLFBopxvuPWUpWeomwme1EF2p7raSTCRGeghhz7qHiPa.n.A2t0AMQC9b8KHHA2ZU_vHIOakNgpK0lZXOm",mdrd: "iSiUqTt8uaQHEjjsUEOO8h7MINejW5NzPUnfmky2km4-1739802383-1.2.1.1-NfNUepffibENxl9IWQDc0ymPqK.e5KF7uwedgsWb6SQRHad31MPezgOnRb733uTE44ce5nE0gxjx.T9.pf7fk4uykCi7_a37kLog2hA9bAQSN0RX.mYlqSE8CUqd_ng119BqIRaRxBXmyUgbEuYc4Tt81nadallZbjz6vQeV0wJ4Upbo24ImSZqpsfOUwdZIhduyCmQ_FUn_h85FdTPRTHIt2s0BIE.xE2JFv66X_tHC.25ev4iTJ_C_UHPMmp58k0f3irVKYVQuddgwR9EWS85L9n3qj8qDKqb7q.C.LOJWxVnsIkp_cfx8FIwBAecTHqFa_UdWwp_eqxMwkVhmEc6rmIyuztm4QxGxlGj.7q6Mk3pkVcHBee7_IquEgEpuvT3UEUKcnoBxJJPJurVYfZHRQE56hZ_O4vFbSGcEHokc_rqNxkgPcPFyLViDzvxR4ikBLjJgwtYLURhqxiReehihQb86soxqCvIdPXef0iqExQIaZgqei5_ZWUp3rFOx0DQMfujtZiJuPT75uqD9gba3icqfcGP3N.z_myFbhSN07VY1k1N0PtZqZ67hANLssWkX8n3mdiiGOAnO6MGLNTXeGqJOxaxhNhxNuXPCA6lBSJFOaOiBMkk0YThWiPZp4FpLrt5H03uf_vH0AEdt6ORDPmMYf0roIAhFdUjbDHHOeowxg4f8nhuLbqDgVv_92IPPUmf.8CpfdVhvTh4_FfLFLe5DtD9onW3QK1nn6xt6RTyhrQVj5Tq_xdNde.E_yFDgLR4ueRCFDTkPAWNe3OrxXaoqJeW7ktorEe4x0R3IGZo8r8Z0Y3HlZVTkd_a9lUwzGhGPh6oACwvQ2oE90_GNXo0HYWuxMqdWpNsA733gMvyjkKhPye0S_WXU4jJ0jvgiwKn7ac5NyP7cwwfWTnC.zrH7mnXTUSAVzdaP9CemBth_O3ZC.rnyBsYWeUp3pQXwdWyluFdkqBjyvd_6dqRAw5x38CL0W3c61nyB3EkhuYIwgP2cZzZAiY8XT9d2LvjJb5Kq1Mg4vMNeVPmBmlhBER2FE7olNVHAP3p6t7x_0x1BGeqOmTZgbzzDHC_jPL0BsVNlGeRIxPtsCkb2f87oxes.1tF3rBkUXJKHQJOlAiTA0RxxLb036DObe5VuqZocT33bmno0hNT6yn1XqrhGbXEaVDRcfYXyPXDcKb2eMtzeHQ_4HFvpoLv_l_M1gFVaJtZtg0beWY49AuIcQMku3sUCEUmdOqfi1yxsSeX2lkqTuffydMVPOCIe8oB0RNgGYfcYUG8JTdtnHL5rSXzOsU7N74SQqXjgzbiA6Ij51_tKnJRbIWQN7qGrN.uTXuks2xcFsEhUiGYQYjNxQvG36jRE6tPXtYnf23VLW3OywSplvlpkqAiXS.Wgx.UN78lmoQTHol4tsuNDH1SNc4.oBJzhm4CK9M9QXFxXuAqlj9jUhsjnOmcMCq8Celobu6yf3QpyFQMw8U8BoQHrrInsXII.WskXqZUlRwAJwh3VJPbjvF7hQ2CYzcON4VgQoTxkjstxjy7CwcrYrxF9RX2K6dVIoFCDaNnA5KsQXygDAyYwzzYJlRQYUJAOFcnFhaZc6FJhOIq6CjVIA4kNrA7wOAcm5XYp83ZDrV4iG1Aa4tfOluMwmIa9teAmKnSZVMjI9BEhO6llog7Ap9rYVZVCFHGcCAyHPgcdIwSEAJfPpT7SXM38aekzq_wxBWMMw6Hu_KL.zQyZS2ZIlBdU6t4kdMtQsmMK4hwCQPdn7gjkoD4N89zY6.KF6M3p40JIrHX7VjzEFtzBSilhsoyzYGJFgTYItRh__tkoSnbFZDqNuCVFC9crHhXhaGt1jPQeHR7HZgp52XrEoie5ghzMwoMu2pO8xQylWHoZPHbtH4Z6SKkOcSHRAN2D1U4KUEIPLz_O1Xs5CWus0I944ppU_lF67SZhFPTyBQ9gJr7y7k96Qo7tdsEa1cRtmGQ7N4KKy_PJVdYJ6N_AV5mFX9MoVA"};var cpo = document.createElement('script');cpo.src = '/cdn-cgi/challenge-platform/h/g/orchestrate/chl_page/v1?ray=913673be9aa6fd37';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, "\/search?q=Score%20level&__cf_chl_rt_tk=CeFXY2jRidegU8DVqPBBMQYPBRnVhluaTQNaSl1gmYk-1739802383-1.0.1.1-Yhf9y8Y7yj2aGU8xNz65YZRX9rwARDNshDLs54F24vU" + window._cf_chl_opt.cOgUHash);cpo.onload = function() {history.replaceState(null, null, ogU);}}document.getElementsByTagName('head')[0].appendChild(cpo);}());</script></body></html>