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: '913689488f106003',cH: 'RA21JP_1vWWVcI8rA5lJSSo3ZhMPt4KLyKDVbd5fO0Q-1739803265-1.2.1.1-tO67p0SHUqFiOi9p0w2FsCMF2sFbL2gR3maov1hPSQQJutIiLr5oD1CgRUwJurX9',cUPMDTk: "\/2029\/json?__cf_chl_tk=gKMsshynZgCPqENaqtX2LXwdxndylSD0N7AE9T8RDTo-1739803265-1.0.1.1-ZMW68xfTAQFdCVagI4WT9fmWz_D.p1wfQwbZi0mXYgc",cFPWv: 'g',cITimeS: '1739803265',cTTimeMs: '1000',cMTimeMs: '120000',cTplC: 0,cTplV: 5,cTplB: 'cf',cK: "",fa: "\/2029\/json?__cf_chl_f_tk=gKMsshynZgCPqENaqtX2LXwdxndylSD0N7AE9T8RDTo-1739803265-1.0.1.1-ZMW68xfTAQFdCVagI4WT9fmWz_D.p1wfQwbZi0mXYgc",md: "AOHnSjKrWzuxHlxaHFDC6Gm4Un8YAo_LMW30EeVqxg8-1739803265-1.2.1.1-9PABUX0KQvZftAM6c6YKZpxvkPNEiN7UXw6JUdsx1RK9Ot2h5RY0IJBNPy1zgB8CIm5w4iEYBqkpePd2CzcWceeyNnFVkT2d3w8KTQmKdoIXmRe4ft3rPITlLAJs6aXiQ9ZuwCABEah0_Y7wQj29CxEFUYH7mkRueDC7n05asJxzqfThdNx8e5ErwxKmqyyZReFWTtpkOwnT6yDE60B7p7aQFBtv2mi3zEAaDxkYYmSK8Hs49OsO8IiZEhAGlruW4Muz7VRN4qqYL.HchgsxKGdtLZRWicFNMAAcS9xapKOjIujSnp1kn1ZcqmaUGd3rgMFJJgDjWhYQG5LBVk.MzWLbtP0x8osLHSMRMb_lDUkrygahNaspp.xCG0hYZrBpQbrrAzzB7hS7vLloX5bRQ8T_rU4bmshDqvOJnblK_8zaInsKhuJBtG2j23aSWObJrkt0zNyNZb5I9Jlwj4J._cbNg4wynkUlSU2d49Blwzk4zYCTK6e50UJAhv3iG5KaVMhuwGgaKZ_Cr3ZokYT4Gew1q.hc9N.F0eDzPodMRXCb_5ql10eJSjB21gPPaDVr43w4LgBzlOxBO1x4k63M.vBkrovZfFjPc6UohRo7JsdfuKOzJkWnCRDdhZ_vztiGBcyfw0vRlFr8aseukAtyXquJGIDpeMBR59cSfVMIrgQD5TYnEmcJN4jsNHpd1fnq2Z5cPV2gVxayd46WeqZAe3aAAH2WI_azIlLghM5h.jQ35vxh8Nd2gIH0scbFT6qpPflGf89OD_MLjIR.XYhEAiT1LiW6y0Gg2Eo1qp2eRvmDf4NQgJv1lPMaA11QHwcjvRs0lF33NxWGCWgbdXE3INS60Jx6iFtdJSvjpOuxcgZiLOV_kRn5hIo7ITIfjJgg.LVQLv7I5R2g2CkKNhmo26HdOHMisG.xhFDpSswUpPLr1fWcit7pKWhPcqn4tOp8eRyqypYVFTBnZi3.6r8JxadLhxS8_W_bTy68f1YC04ADHNLIEa8KQvNhTmhUN6zWP6jCutLOE7UPKW1KFJ5aST_Gm3KG_i_PXpsE6WZHmixyJfVsXPYVSFGcP6pbgRk_Ln6moD7Svl5GUc3xLSJ_oMqK1nIQVIxNUuH6Y16LvTTgOVrX89Jesn8Q9AFQwg38XpxNqFSYbUeNbgATgZocgxkz0NwZ2DA7tQTywa2RWUXHMxPo6VjthkZ0qMyXeQVgl7OnsbMEPbQ4J.NOXXzSK6o7hbmus4yB.Np4PW9IVDsTjhIOypGN1EJHLueWi4rE6tcBcHjm4rE_3RJ0Xdn.Oxa15.iCMxt8wUmNpPYW8l0fleAImaVL0kiKmYmXOYsRRjfvJ6IcMEs9y5Ybxt86_0x2CYIIjQR1yoKXdhxmEBgmg8L.ahCvbEK12AC42SLx2tFqK23etDpPuE9KR44LETDuZvNRzYcU8ekDv9uPfb57Oop8EirO7lg6.iGfD6KFWaOtnt0Py4LSGqlOjsDIaKSA2ZDRL1DZZStoDVFPaPxs.Kis7xCqtG8MAboWzuPNeZsyOU1yVTnOQAmzf.0jyoATaM4kcWP3wMf81YfmPAe29hG21glWcYdxVOx9hgOSPz29KFPDlhgUM1v3N6G5V6WClDlI_oNhmSFkeayJivFrsGjoVX2413cIY6IS.kRb6UAS4ioIvvtepSgpSc0iS1DOBAhCrAGxsxC.BNORUPsVOpYLO_vtn1ec0ViqHO9htCkUydEYsUC3rxJxQDlLOneBKPXFKPF2JLUd_YXqG1LwIPBL.vL8Jz8_NxjTh0XeVOkFko1zVsVPcmGy0tWxNHY.KLGsjGrsirlMo72ALSTMfCE99c2DjLvGOYZ6CTWOUaFXstuu3bGpgT.XZB3RCxhZduAbenwDfz5XM875wWQ",mdrd: "zovi7Bnnp8svwFvg85YFT1kCpTV.C5oA_9fkxILTpXY-1739803265-1.2.1.1-f3uKXofMUBLm5Y_GLtxhlCpeGouq_Sgck37CTlsGaPGVLI3lYGva7HI1JJFwiMRSMdU0kQ91ez81Xb12uwOKmYW223.bNT5lbxL6NYvhRM1S5XIodkG6YznFCSFK2PpQMVxMkeY91tDNgQAisCQMtXzu69urRfL2SafgGmJj4UH_plWGOb4XD2_Km.Bnf.gpCnHfMMoBWj8bw9b1KV4P2ZTWYnpYwviUnCTimz_AFZ7xgQKswydhr.dOX4qtXZsSSLjlAlZ7tO5E7FVOuuhbDvolzCq4FezdlwrZUkev2sgAxDnMsvQiqIoUaxQsPAOs0NzBzqY9Bplq_9blByAYdiIOvCPFiJ9_DHPAqxqjdrNknh2TSTgY1I_PHHwOen_Qu3DArBXaVHSKQE_iW0UPevq.Rmv1xQfFp568kLnGOAr7h9UNRGQ.01wCGVDwqnLmWGjfmEIZe73fC53xMoQPUHhDB4zagMYfK_ys6rpuRDKER9vXVLmhvSPBalokLHZ.Vfh9E6dGiJEWYW9_SMVFIFPNP8q3MXJIFYHtqX.5FDCR9JiSqOhyRSvq26pSBy1Up86L4TTdO3DyPG55pukKipw_.QQJN0zOB6._EHSnDgcLdLbKK83AD6pZgz.0fFIRKWayASex.1LjM0oEPyGC0iz6ftaB813HnPmKGTTKqYrMBT6sqPFyUEUR_Q_jC1TyhV71G2qDLRLI41mjqgoOwnun4BySmbZcuiqhkVxU5dtMRjdSkOcGytgjDQc67t_d2Hrasj6KAHg4m0z4aqPwVKAEJlPlqWOPb2NCaHBW77g8gPHNGnOKAHpQI7sekZO96_WN0YYYKjfdtlw.ZyG6JNeagHRwkDmtRC7GmmuofwiF8Wr_S_ArrP.VFR4aJJC5Oes834xsI_3gTzTwdXAWKfgOkgwJUa.gv6YzUMK9PuNulLwZuUqq6_ENEhlE_ZEuOAxLDi.0BBi75ZthhjlezM9PnP18TDlEkEVAPPMxs_qZYGjSse_fyR1VXaizrv5LH3kF.ks4YC676nDXegrIzYxkv7FWCJrrHkt.Ui5ehXPe4xEcxbyZCANgxvX3KYZLtFpCK2wpRbsU2kYYi3F8wy1Yf376oFeSTQZGpW2K1nAeyBljzwHGIMh2VgGk91CfbKf5DG9Rd6BQCT1cREMcgX1XvAxHMiroP4lcQHmTjM9zycOJRp5vtaqARin.xUr4QGisulRiq9jL_Rsm.Iqs.071wl2KMhtV1j0s4b40m2GTKUyCxAL__U4gRW.sqQmGyhV0xabtWxOHVuU0nHIHkjhRPdUoIhRDJEoNDxNb2DWmZ8LAYGCtRBCyQKm9wa7ZQI00Z98FBl09JocEYp5Z3vMAxiWi_XrC5IFbmiDCBQLYRh9WRQSHtlm6G8KxGvrTyJ5xHOSZamA96BeNV4UdzShCDU.GQI.Gb67eD7yXGM3GhlfPOrd4n9n77tTifMLw5MCM0sCDEpNyzvlTtDftM91SM.2wus6DXk0T5CM9aIKB6qAd3mUaM6EpJZp9oYoKvkZJ59I75iENqZpuoVSV5QEU3FJZy2htbchN3cwBnHA2PF8hRtgQaPvMj5mk3wrfjqCexy7OORxcw2Bn_iqImRcgvcqSTzc2r1n9vjVlCdjJkqGtiEapMMJzzOZenZUyDKgJFDyReZmMnm1f1PLQgeNK3lL_SdvUoKAtYzt8GYOlkIgUVY56RUjk2Q5u4TNANkX.0j5O.qi1fuTwaCnn3tPPVHxkANy_iEHlpbveilWyD1OvBXL8tRjW6HqZmlnDLfxXklLonyG0V7eznG6yJP3rWdGuyHCqorrHKL1AyYAHdbOiqtmLqGBXs5PePEXUV5K4oaVbA0cXfZ48FVIZRs9fWkj0dw26JGL70UccL_v3NtQecFXPcturZroqAG3vCq81ALjC8F1YYu.nPV70pkzx_QOwdiGtYuTBteZSxbeG7NAB_OXLSF3dbkcgfj0Q"};var cpo = document.createElement('script');cpo.src = '/cdn-cgi/challenge-platform/h/g/orchestrate/chl_page/v1?ray=913689488f106003';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, "\/2029\/json?__cf_chl_rt_tk=gKMsshynZgCPqENaqtX2LXwdxndylSD0N7AE9T8RDTo-1739803265-1.0.1.1-ZMW68xfTAQFdCVagI4WT9fmWz_D.p1wfQwbZi0mXYgc" + window._cf_chl_opt.cOgUHash);cpo.onload = function() {history.replaceState(null, null, ogU);}}document.getElementsByTagName('head')[0].appendChild(cpo);}());</script></body></html>