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: '91360e519c83fe0b',cH: 'pkZ45nw5vXUMOjqo_m8dUb6fiXnK1N0Jw3.fPiMplSQ-1739798228-1.2.1.1-ycO_zP4nrb059BX0BY2NqQdIhTImJ.99RCgqzdTwTa_tvPu9znp6PtPMoCQ_PT.6',cUPMDTk: "\/search?q=Hurst%0Aexponent&__cf_chl_tk=ItrrhRrhOiscHTXQaCj7SzyP8cdyUIe1iBt8gOf0eow-1739798228-1.0.1.1-vROTtCPlxmSAfd6c8Nnm5nXVTYf_jlOCeUUoVHFNQ_o",cFPWv: 'b',cITimeS: '1739798228',cTTimeMs: '1000',cMTimeMs: '120000',cTplC: 0,cTplV: 5,cTplB: 'cf',cK: "",fa: "\/search?q=Hurst%0Aexponent&__cf_chl_f_tk=ItrrhRrhOiscHTXQaCj7SzyP8cdyUIe1iBt8gOf0eow-1739798228-1.0.1.1-vROTtCPlxmSAfd6c8Nnm5nXVTYf_jlOCeUUoVHFNQ_o",md: "cKEnNBZK36pKQ3jqsoNgthgYY6MTn2lSFvQXh6xhLrM-1739798228-1.2.1.1-0893wHUPiThdzYLpQPM2WKsrOQBv5qxWDXAKxSuWkk_HL8D72ovDOhq_1_MvKnLEvSKsRWUb_3RXheqpyCnAFzRjtRJ0M6rY98WQBczJzd4pg7Omd5dPOn1IW8sltesZ5aBLJm68UPKZdjqKvFTiTjgTiJtXxvTWflgSwk9eWTJVfxriI4cBuacUHSqLaYYdD2fNjUzppzf8ckCxTek7ST7FVKF_jvhCJhEALQsD4jc64CULuXOVfSQtMztpDI2YKLr1rTDMflAwKIkOW6LXCT1hO1TjstDfs35fvd_WCVkSgWX7_LVVTk7SvALKpHPOGnRVZiqmWlp5qWAWiKhCgUhVxeIE_whupjjhIGEeJluILt_H_eiCzQJACeyX5VR9rhOMPRPICsU3UcuCDpfss._fYWrwvnNw6AsQ3DucdT1QDDGMZ2EWyPYlCKBYsNrcZnKCyWfQ8XnuO4cpWEK7EeQVBfbhlvtBtwWztg0I_QfwgJV3Vj5MGRC1zJPW5x90GXVxTWWFBRLRE4cbXHnmu_GNkUXJXl4KUwVYWQ1IoBRjO0RjlNTxhDdTPvf5W9gi6mBB4OIj2WLheK2l7wCtqxD9WjjJg.BLBvO7uMkV.uLC6MZQiFpE..0zgbMhiruWTozaQUSjGR0x_afTYEi7WvG3VrJiZqkhoXM81kdAKpcQi8gdk7hFw48loNqxcu4apFNkk.ynTcbSYUsbRU_GfHpj3Ii_ma0x3feRljwWKvBG85bC3eNgqYO613z6FldRf9Xrz6P6WMl8z_V_YcRvj01CQlaUQWiQKzHkLCrSTFCVg0kINox6_cRZkkzzt_j1yy7xxE1_7Y4jv_DDjlWXXp1sDc_eBR65j2g4H.ilLAnS5Nzlu5RoIeYl3fap7T_va8qNh44GrKwm2h_C15DxYGXy_kHdLgCE0ckqMYg5u92AFMstTjhR2wdXLnJ7cesrIHaia_auuA1squS0pLHi.y2ASlqo3fW.x22hItgJyoR4sggrkdRx0cNpkVojgXZQRHyd7OGmVVzVYEcOtsXvNSFVa2YOuOdNeM.kDmj8_4VQ1oKO9MLknechPx0a2F.DxH6c04Dkj3Js0V25be4CzwR1XHEiUzHJHj2I3Lg3136ku1P4ONCT_e0MkDZccOGqmjDjm7vxAQAFdBBXbVHFHC16jWB2isb73kr.geC.N6M5wCsHCWmDxwPbK1ZfXdfhJhpyajUaZJ4SJ9uPTDpiQHwJpvcAJZQtyxm_MqlDLwYQNmNPr.mpcr6AEkEklt7eYBWJt1M15VkLZYx29nTIfpSPh.9ka8YnCq.lews9wen16x.7WccTWoh35eAIaqmj37AWcBDAB.EHuJHhRyYXXFmg8Lh6kfaGrtK_a4KN7QCU_EfH2tQSvjuSj6kT28EVeNZxltIQ7T_NsHszUoBu34focoOIfZHIxJyJU3TWGJmAgmBohGlD.31kNuVkSkCXS4Iq5XRUkEY.Ke30ZarlODgPxpz8ROavIfVu18F0WGLp3jZ3HbX3TrNMjTDfF2FPrOs_Ma26u9JIOpByxlMFTFy41MvlhB921czyopZzLiOTkLyo2TR6fITxZq0_0VSirQj3A9uOzKdvqWN_KhKLXEwKY3m8YiV9A_kJvWMVDdjaDW7VCAi2bFej0cLjsAOzbDtruyfLEMUF25Os2rdWcQnV9.vPik6vedCiDjzTImoPc3xv_R.ZN4Rsmz9WJlb2q3jUo61LfDlD.93wyYGuHpRGVyQtYe1kba4fkrAeYWfqgFF3eTYEADHxM.hhyrYXXTaJDb2RocAQM076Tu.4.bRxzZmLyNPnpZ2Z6KzR3vSqMCYHB.Xq11XXMrRjHFUYHcUc.mH4NbUSf6IbPUoldZcqHrelUOx02bX4Kh5RthEjm78aPmqLBbRHQAuY7.oDUkTdyG6ruddAhB07ac4UDg",mdrd: "0xxuggUoQ.DyIlj5gqiND2JjOD6G2dbSM_sixzDpt8I-1739798228-1.2.1.1-0vXYXTfdb29VzwQlGOxPDd8oY4uR4Ga3lAapM_pAej0wd0x7yq2bNdpg8oadQxSM3pcffPAvRoERDNIJ1YAHzWzsq7lU9K5la6N7nQvI9m3x2UuFAGYABD.CxRpRl9iD7KnmfPNlEC52__dIIA5eppjKxFr6WGSy5Zk7OBFSJppEKK5wwZptIjEWRr2eUHQpL2g4QcuIsgCInaLxRkXrguWWSKzJBMgQf6TV3sxbZyATjTpYASRLBd5VZlVPSAb3FjBVNeSjSJdxqMAM.EcAimeUW8zYroOr8e6fqTUETzHneOXVU8CrcSPzwIiqhXRPd6rHPAvniysxVr_qhMRVkHhknVyESEBS97gl.jEBQzBPaSLjBuhkRFwreiBX9idHmQHNrU99vgzj34_ddu_2HH629nUQqkQnhUIyzUIaXAnK9JE8PQm_l5kxv6KA65EnoS05K3ZtAVdsXMf4Tf4c26GINU6L_nYhobZe_DcW51yfJkvEPKqamp4zjqxOOosANun05tfkFkvHcpTUj4fsF1jcYpUUWL4mupCdDCIac93O2K9AvQOC8Jme4vsSld.A0lhUWMuVrXR.vomxqHuhWRmF6t0yiyL97J1tcQw.PlDVUeF.JoqPM4YF.Nuya3jn2v5_yrPGlMviwat.PW1AkvfAGgAu7IRbAIoWQc07jQGQ0A3f0pqzMcerE02jghYDN38iJNvsUa._kBSCSQWy1vnncLr8hvdQWGEJwav1LdVdg0UDAJB59gz5mIrP58WzzxxUu8OVBExduMst.VIxW4WUxPi9CDwaOUfR52xU0n16ct4oi1BziFAPDM6j923fgmJ5m2J1CfhAKobBDRj3LsLYmvP2n2YNWXbJ.yj1rhIN8WSJBm3pM.oe2yJ_7FUggQE9LeI9Ph90Jg5vg2gUyveRGcJmFN0kgpDPN1nttKH_axWLx2HqL2Rg_GS6guBnXnZUh7I9MyVqYxGJ7pKBL3hhGh5ZXkf8OffQ0DrPAK7xbgnsakG6FVNEByp2p3kmPqaGz1V_KcA62qqfoo6ql3aLUif9jkUTv9WtNEQ6ssPwewdWz0kVWqdbEy37NTEIR.rE0RSkOlNCk5oAGrg7HsT4.n80XBeg7H6.BmP.nob9YgxDwKxZYs4WMVe9F.mrDcvBxVZEAS6XTANLN8Vb3283B16KaAQ1b6ahcl6URlt65WNdcZWsM.vIeTiZMMNA4kRjNMJ0E0SEfhGkustR3ynaqTgKKlIrHcV7xkf7lYEyxrZXA4IE5lJyeg.crM7I7HKlPAc2YY8A35WPFNgF3O8XZDlw17NFnH8drIasNw0iyjT5oWtkiVNXUBeKDJIHzbFHnO9r8kRFGSpJ7bwHMay5nVlzS90MPP6SrmqU9_3Fjij1IrCzs6WujVzyEAV6hMi4NghkkpDXyI4CON9IBnJefoj97sAVJZrpRO0EsS3U4F3D1BZYvUTpPLIJpBNoQXJ_R1L_NDVioOGYan3OQTz4wSApJF45i2NjUbWAFncVqT2_asXEOnF8muNXSpY08G1d0l0RRoEYNoFbVdSFv0VV5xF5AchItDh0MHPnROs30i2FdeOXPdiy8m25Iv3d8Ewco8yA0dn1e8SPf0bcsNMNm.ZEs30UcroZ4UYJDkAm.VLT0ZzMgq54M7g6m.pcOQJ.XeKnp9VevJ88ANcT0QTf4xmGlMSEfT5.QHq8ZokPFRkoXz4RMSQokduu.dps42DagfsnZQKBZuGi0B7WDWaCElzFzNQ9yBC_9NgK9ZM.MRAq2NcugemhwBkq5zcd7CuRNugjVZ.l1h6wdkQcm20aHO7ySrGmqqee012fZjU5EGPXfbVE15yrTxcE3OdnhYZkGWsK1vbGm9NTdtLl25dXkWOtEMrWdbl2ZZwvoZP_VIa_GLK3R1GUiPY8tzEWM.Q0cJNybT0Vuxr4gcfmfZpB8Ssd_lERXygp2DRZsIrskhoeR.hF0XuShd2J9czu"};var cpo = document.createElement('script');cpo.src = '/cdn-cgi/challenge-platform/h/b/orchestrate/chl_page/v1?ray=91360e519c83fe0b';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=Hurst%0Aexponent&__cf_chl_rt_tk=ItrrhRrhOiscHTXQaCj7SzyP8cdyUIe1iBt8gOf0eow-1739798228-1.0.1.1-vROTtCPlxmSAfd6c8Nnm5nXVTYf_jlOCeUUoVHFNQ_o" + window._cf_chl_opt.cOgUHash);cpo.onload = function() {history.replaceState(null, null, ogU);}}document.getElementsByTagName('head')[0].appendChild(cpo);}());</script></body></html>