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: '917d79e63e14a053',cH: 'GMR4Z4Fql4ZiaEexrU4vsgQOV2c31xYptzbSFrSJ7.Y-1740547124-1.2.1.1-lHqz3IJS34fsmtxqxQqSOd9Qs4Htr35SbrYYx5jqlWNCGmqvvQhbXadyr6M5NUD8',cUPMDTk: "\/10604\/xml?__cf_chl_tk=xHHx0HgsU7FvoEZ.pk9LL7yFY19J_U5.PTnUmF0yS98-1740547124-1.0.1.1-sB0XF5uohf3.SggxIjaH5IDnMwFl_Y.R_vxPywiacXQ",cFPWv: 'b',cITimeS: '1740547124',cTTimeMs: '1000',cMTimeMs: '120000',cTplC: 0,cTplV: 5,cTplB: 'cf',cK: "",fa: "\/10604\/xml?__cf_chl_f_tk=xHHx0HgsU7FvoEZ.pk9LL7yFY19J_U5.PTnUmF0yS98-1740547124-1.0.1.1-sB0XF5uohf3.SggxIjaH5IDnMwFl_Y.R_vxPywiacXQ",md: "QwE_gLpEXj6Ez1FZNm.g2QvJTpuUb3a4g.MxK.Bz9iM-1740547124-1.2.1.1-4XiD9Xt5e2QM6AWJHFmEw7crUXaUU3QACghvXBWNHBj1YAQtaRQbNM1sgDcgA5hpAINanOEdC0AGR7.q9152mjafnFZCYoK86dRAM.5raXxZ5oyEhfq0Dl_LfmalNSc8detayvi3vUxU3lLzu40Xy9D9__oZ.89d2_4jdGxQB.0Q.WJDtl5kDIGEnXVnxo73gWJQnZb_.OuAXz7ljGYMM9Ots0RyPBtkucsG9NhYRkHFY8tINPXPG2mRZmYqAqlQsnr9_H5qHbnn0HvHpK_FaaV1eAG2jnPsmwTX49H.VywBKZcWQbdGTNPButwKy1FCoeLUYstmY_DEICyEFNvRlHTzRTHskg3ClARFlWCMDzVJs9rpg2c47xm4aUjD1hAz2EAkSOzBf4Ma2NL0ZaASXmi0heEpL8OfKuUGRx7xU53AGgENmWgrI9BcI8HQi6CsRkSkcfKvue7NvqJe5vZDWzuoWc3FgjRp2o6Wdwz9kM2CPbAOtGVqreUSuOmebujRHKtRlHzlRUGq53HWpnMRhRU0fqtgwK0L6g6NAT.ihWm.1wfHeBNr29gdq.O4UdoJ1Jbb6UjvQoFstBoqtcmga0lWelGu3pyiNgylp3ESSy.pfngp_tCr5bx7qEtnniLRmr8VK9IenSrDFKQWjShLdOXUM0bAzNWumNsYBuR6_kbO3ls1t.LsW4hiAW8108xEr1wwsEnxc3_sEdssYG57ONPeKBNOUh4OfcWzPk0IdBnPGRSX7DuK0yPC8cW4z54btL17lbcbPuK6MpYjH85SvLlKiolb4Nj5wGI2280VVJ3vhLXJbrqnDb2yOQp8Vp338hrlhaE.hUIGRkv7eFwEa.ADhHTp_lbn2xns0RAjlO1zwcLNxOZXaVy2x88A2h.1SsAURSq_.60e9wH.5Rz09dWZZpa0264465zq8kerNEP4xo0cfzQg.Maz_FWAF2ZHDyjjsxC2yzuFYl7LbJdluRo3FeF8_uwiFc4YDkjaKwZv3t.bI8ncUfN4lR7YM4tSDLwRED8DiBlWcFi2HufFi4gnh3JrdZEkkVIfkzyZNQWJS6KiHEQ_nmgNTLvcrTic_u0C06ia2QlAWUJRJt3MqVo_x2BorXdhfLgDSIVUvj23_BqX8JnTFR3_udlsCqulbsciPz.rrzTzlH9KbJjg8OVA1YiR4rHjWZYI0ASjZ.JB1ajZggAKAKGyjvxRjZvfAt_swc9kYkCFci_1lX0WPktCjdXk1dgD5QyKXKSdLSPJKlhcEzOzUoRxSFExECLvglPNHhZU.eD38LNhnI3.aQUknjkoHaQQHU4uQuGDnNIYXf1q6nqK1ON1mXiFx5GcgxwsrKgQeGlXSW_L2INkBfZ65vAHixzFLDi_f4Bq06Gb3o3.0mbz5VtTNctwfQPwuWXyze3XmL.XFJMLW2LgRvdvcnr6FBBStYMvWkTJK1lhX4mkwyKwmeHnOkhWZO5fmy3NnwF23fCqT7kzQsUuYneJ0X.SJoxhpy1ipvoiK4CtbXAdOljFgrMgumPj9DXbv39ggv_cfhDvIFTdlzyW050Ze3CHcx01v86FnViwwDgmuw9CJS7HvuXz18e96qFRLOEX3Jk0QabnVq2mmd5VWcwgB5gMpZqtfIm8bXQ.SX.nPAE5tXwYYakFxTqjBCkft11p7Ytzamkd4xAnOR94H3qaELClAtgXQyKKkJmj4QS9_kg.pYYSekxk.l4UD2CjDNazX4AjP19wmq._zJFkKSHw0ff1giASsM3d1HhLuCYajXVgOkcoXUKbbWRD_lARmR4bDELPsMjf52oiwHcDwYv0YEoFXNoE9LRuIVLV5gxkQN7XOzqDsBGQojmAbXnoqkgqd0hGzJzCFK20izOMTOd8ommxUFC5HFOPPF8ia5I",mdrd: "V8m5J8x6e4D0PEHgks3TFGQAyspsbwVpDJpSni7Sfs8-1740547124-1.2.1.1-WP8yEgz1865Q3hubqEqkN01Ieou7kEXE3_czrqdCqASLXKzKMlkZpZ2kEmBO_puOflBBzMt_yubZwc5ccSB9eg_wnfZi4my2tizHTplD_gdp5ulMjR51o36j5rjoa0BtD9MIcYtGI5VNOFgjcezeXvr63gnMtG7mqKmhfLwvr842mkv9DfwK0OdNXYK6gbechjdOhUcUHrQDILOzqO9NbhRMWWS3t8cKRgWFxqWk3lD4C69KBVnfj2Bd8Bb.9Mv7PtkQqE9b4IC07lfHc3Zd2IN5lzt95M13B_sLO6ttMPjv_JQpyXim8lV2go8NaaELRDiUstnsW0Cg3pvmOybQGmweCq7Ui9c8FR0y9VgXT9E5uYFE0QBtGjmXazlHT7_eP_A4KFwjGb0mWxG98s_nEOqG26wgByGilusItCKfchioD8xvSBrmDh_00JwLGpqz3GomtiCKzMIOYUdmjdLLNoVBntf4ou7JyAX5afplCmd3Y1yc4.7LCT.sBOhTW7Jp0wpv21.dgqiRr2h_RFCwZqclb6mJnjx8HTd25Dd83g_QZoHM9GALYvrh2qE6hxCOmY6CewNcIKVzHzaefAkM8UxRuxGoIXjs1haVzESKreqh7lxfB7oOU8y0qB3_ADloB.kw38mTAAj8hxT4x212NeOjMBSd78QVIDk_xLP.u9zC.n4fd4bar7y8n3o2PtmEhJGlO2tUOOMcsuhG.AOqLy1Nqq.0lM4LABvEVHpKQMCZ0JSmYe9IOrNwTX17TRlqP0j4FmF4PCmOvwuMBc9cfBSN5XfNGHm5SjYqEn6bw_yepN8vXdCPjBM4aNdsdV3NIcH3w.OOa.M64otvE8KwjpxI12UpmMAQFDUwNqZ8wFC.A6Fh.9mZv25Jnj7rtXvC7BXNrm4V9I0LlW0tXivrT._oeaGPyRDdxorL9WxCmWWBJwLbG7tEAMGabzrP3cZzpXxgkK2lnpVTeJSkaezTJLffza2zvmSG7WxSrZuQkz_nBFTzWpK0ROn4XfoX.6CYnWOqMSiPJ.1HYTTablyKGCcoS4actDl0AoJU1yxfd1aZhCurF97MH7GS5LPSA8G00a2ZA8KQNlwl6pVkkgl99YQ.tSYzd5mAYoqZI0qrOlTKBkG6MTxX8Na0i1bIGbDSdMjN6jrWaPsvO5LmfIlHGGtrfbXw_hHO0Fun.QmFwUBB1gcWfdmxe6fyLNIrSex1MOEReRHh8lYCZpYdHWH9K7yVv4EPts6wStVoqp0u0TRMRVAWTLXOZHqFhlblr0JdXb8AbCY.qziiWqXUN_YeBaVpQL9Y7bP4O35yaNu7frejj7W5aQ8bpkr4KL7oYNdoXN1s1woEBZM27G6jU9.ez5pFBJomBSu1A8IeUpUHHEeUGNeuopNzApFCHOHlNWwjdBQERvX.QH1XBBC0W4Syboj05XBjnIEVW3T5qk9nEqnh.V8UVMTgmNyTRxA4cGPti3yHGPS1luxRWJLhd3aOzlZvT0GGdccAJwcuXFYRD4fl4US8jqU16BtK0YjeHg5kcYE2R.vnTh.2A9R4iBhpeKayphnObOvR_8dwUwgPScyV0SEq92kh9c57w.C5MUN6YoBb0Lexpji_DVhOrno4k2ycxouR8OAB5nYD7nuuNrWnU.l9BLzcxp_tSN4ftMz_24B0egxmNJPUNpy8SD0DJN.WT5zbZ8qyFgM8_WVLguxXbLtwaAxdGLFvJ59HetR6Kb859gngrpRNEO6.V9KxBNfuGPLg3IbLxpOkCBqLWiepeVed3kV4Yd9Hc9Gd44QIOjrDhHdWW6neIndX0Tztl0pxe.wSzsas6bDqILc16Yb4280kJAgupSbCUzSZf23AetZC.erPOE4yBOAyLikd02EGbk34Wq3TZm8XERce6PeWUXg4DAFuOJqtSo1p3QLIYaEzbrQUjmy0VRG8iYbyGemsSU4apS_GSKVsypjeJX5b0nCshovfvmrzybGi9ud4"};var cpo = document.createElement('script');cpo.src = '/cdn-cgi/challenge-platform/h/b/orchestrate/chl_page/v1?ray=917d79e63e14a053';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, "\/10604\/xml?__cf_chl_rt_tk=xHHx0HgsU7FvoEZ.pk9LL7yFY19J_U5.PTnUmF0yS98-1740547124-1.0.1.1-sB0XF5uohf3.SggxIjaH5IDnMwFl_Y.R_vxPywiacXQ" + window._cf_chl_opt.cOgUHash);cpo.onload = function() {history.replaceState(null, null, ogU);}}document.getElementsByTagName('head')[0].appendChild(cpo);}());</script></body></html>