CINXE.COM

<!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: '9176e74efa7bd083',cH: 'wesNjGd4869ACuMwddXGHWRLPn8vRbhfuL6hWK1iS84-1740478205-1.2.1.1-3EhQ54yaW7lFQHkRm9SLLPXV5L11dT9FnVYVaq3l9PLDEv72zoMepP4guPI5G24z',cUPMDTk: "\/abstracts\/search?q=moments%20estimator&__cf_chl_tk=_6czxi9oGYapOOrbz_NSEGTW2O3uyZP0n6CX5DnhhC8-1740478205-1.0.1.1-lKewvQD3JIl.CIE9mkJXATo1VDwxCNcccN5dRizlhnk",cFPWv: 'b',cITimeS: '1740478205',cTTimeMs: '1000',cMTimeMs: '120000',cTplC: 0,cTplV: 5,cTplB: 'cf',cK: "",fa: "\/abstracts\/search?q=moments%20estimator&__cf_chl_f_tk=_6czxi9oGYapOOrbz_NSEGTW2O3uyZP0n6CX5DnhhC8-1740478205-1.0.1.1-lKewvQD3JIl.CIE9mkJXATo1VDwxCNcccN5dRizlhnk",md: "ldaR4XzsJJ8Rra7Rsvt2.6fTg1fTi05QzGRbfKTcDkQ-1740478205-1.2.1.1-KNUzpi2j76zHn_CsVqoTHQte7ZS8HY_FgueTZ5tkM34U.TsHF.QKI8y9vXa2aRAKSKCDSfBruOD3SJPIeqA3bW0hl4MvHrg5h3W5Mfq5q3iprjoGMwaqronUOILkQT78eCYuOs1ucPypWFMgheDaC12hEYllys_uIXlxCg_JvxYFrUQphDWRGgBSAFiTG.HtBkj3NCgM8O59._X2WGZM8EHdLKPaa.ZbYPaOgQUV2PJlkvowE8RyBUv.zlk1xMOmMCzs3yJOiD.ySMSTg7riWunvOF9NOp9UEVhalqeo2c6Wm3rkuOyNHo5sAfAkx7E4LWo99R5ib8Ite3z0XjwWtgVfqdvA2gZkbTCMgn6FHG2edaHV8qNuzXTz9Ugnl4YDrAo9oAosiirR5mz90IG1FLaLA7IlrriO18LXxqY7vajP49TA4eNHoTV3XJf0g.E46M5EPLuKOEaCXHswx_qntSSiB9tVTqw3EmHqgXwm9ClmmofVIVd5w22GCx9vEh5BS6g7TbaQf0yeO.Ut.YnvfEmbkobsRcWBJU.ICEitiLD70r58o9g2UyOIUTBdc1QGpX_7kJTrYzvvMoAhE0XaqZWtVg2wgAv7EN4muhbyke.VhLVbAVuMEYRbzsTNXoUG7HyfcycRH5UDl.mni7CiyCfCGdJ6iCwgA2xa0etnP867HLhP579yeaYbF5179nrOPwQpK1MPt3_0jiLRLUGCcIL7WBqtg_RaFSIx.WTSbP7IW0Vi_5W569qj0F4wc_sNoRHBLvz0nOEpIBX_DL3vWNbMh57J0m33xEVZh.cGrlKMbE1QrwOsN5kSsVF6Os_vw8f1izDMRV9tlr4f3jKOOf4m9L0LNeSlXynx.VQ7.J70nK6NpL0korFjSAeq7kVhYIY.Yr7X9NB_9HTcrHkxzlFM05eUv.UL6T47LlTSb8OdBXWflPCFq5W5rhbKXub9DfouaVhemlweo9rfBY38p3hGxk1SfqyRXrgLpaCCCj_dDW0qmZkKG4TG55JQRG35NaCLagXAgygar0Bp2PRFFJHhlJOyRf1Dvh5NHIydjpFF3HRK.C5B0Mvzg_RZXKUcHA6KkLW.D_4i_Rxz7o4AOMRN.kAh5XKLvIBhDlEDzSods0bJMEUWHaCHV1h7_9oumxTxGc6K2PTdThsRmH.rzJTwJZC3oFDPSsSwxYRb.ZG0RuofD5NtCpODBhtFB_H4z3h5PiZGTEkKjRFKHUjqR5ssRc47OZlJ5TGtpDpVlDQt3Yi0bcDUg2enl5HDlRDyKjn4ECJKxhpE3PuFP.dkh4IZqXvfmNuOGk2RMT9GUcG6C0SchWd6C_Xoob8VZ48cBo9DpUv9eK.bSqfsHQzvHGzIA3tblGWN062GZF0JfD9.Hz6fKxH7RCi6hL3ydkLEeTgS_uX_Xa9WbbYrdNcvaYlPDcwV_f2DFyaEiz6oHQCGC5ih_gPQIy8GacVmnlyRx4imokK6WWuA2w1Vhl4.zvLO7gVjQWYQlv3gYP1EAUWA63Fx3cBjLufCJMQOvmlGgeJfYACnE2YgUt.xFFuDv2pUrvHbvLGF3QS_eq5X2bwhZkfu9x8eo.rbwOy3ZYt8hnlKXCvCsuP5sZyVUUpoJNUfQxs7rC16zatDu.3fVmMlrQNoWbZQeNAfzTVROub5dg3WZVfpeSyO6Jikk_dPy5e8FJvxT3hZEfRFTCkshI4YRgfYgCjvZq4dmtE_P1k8iqIP7FoyT4rFa.743y4exHqc2KCV_.ikjHtJ8b3LW.MZXUI85pjCRcRPwJE4Fy4k7eIxXjOY2EbS9WL1qKNUwUy3y_Cg6qR9Mi.z.YykC8h7cM67rvzlxbkRSFVoWaSMDFFgzNRGtnh7.kGYJbr13NbXRfQUWxIlcvJ_c4R3CwkAXqwY1kzKJq7uI9qVb2TSDX90SqkaefQWFKqxahhWZeLz2r74dxb.8PDztsY_Wuo",mdrd: "dBGhs1TGq6pbsNuerW_TljqqQi4uJ8U.QF_51D6SThE-1740478205-1.2.1.1-OtZtxWqUpmbzsAupNcJbyb73wxMk5bc0jEr6sZ1tkfSwOOvVPkXvmRbEQf7CcQohWWi3tjH5NFVIdD.DyfHtEI1XgqDtpfCBcNX8geBwr0_0jZGarR0kEP5R2xfvWOhKF66pf53wMrztPBGF0E7P2OiBOK4ltn580koCASUGDWACx19_FaWvEpz.GcIVnE5HDSRvxGqXLHkqaFWgPPfuS8fCBsBKLmIoU9SgQYbur.LZwkxL9QkNnMbFqEBCuiHOwHKGbdWrRcYkC3GmxBOdLHo6QyVrKK4sqkLrvIni5vyCNd1s3I5vr1k4bLvuzZsjk2_I3vemz3N3gaJVl2gfT0JmCQojXnrspV8CxxO6qV4X3uPo8X9j3AeVZhWaspmKCgLt_1WEX1EUxy8N1zzVj7sg0gk0bx3IrUSF6IXjieIxyEWCmQK6FgXhXmwv8Mor7VlBgUpaTdvADilqlTooQe9eerY4At87PAqvsgMjHPMVF5e9rfCQDr47BF3Xo0b5i9j7i.gRO2Ov1wHWQotcdTOEWZ6tocldQUOJoSSj8l0xEQohYOq8KQ6CWLJRfGy68ymSlwGOZsyzY8UbFvXenEXgHPVBG._8bOBoYhCGQzbh0Ff_.mUQ0cIsx3r.BwRc7TVF_b0eUzbbsnvV54o80Gv0uTy0uSKA5a1hCpNTdPxNxB_Wpilldzs_2i1i0LsYDTPeTqvJGpQyb2aAsGg4qRQTFRwjLeVVKpboE1zYFU0UdHqHPkfBakn3Rg2Zg39VFxpmPBnBSgX4.k4RsoZA84PogNcQYtfVDh2r.n2JilQhjqS6P5hOk1X8zVx97LXRPzypM3hOn44N5nxOm4RdqGma2Pi84qKScuVFqfWERKHZVp2fblQYAI9.o1Q1NVMmxnIVeIYws9TVqAk6OXSkAt66b.tWM3ClHiH0A443RoMZYbDbf7oX7hCa3p0ynXtbSC8bM5QAyE_ASVFj9Vde1w11UJE7.PZ4PblDnTWTD5CoFGYXlu6s_dCG5OgtIjl.acEoJOdfLWZ1mAqBZpA6bIuB78e._FMpGD.69ZPRX1.I_vWsPyf7dA9Q7Bunmvw.kGNI7RqUBzgVE1Z_eGWpm2LdazP7einQU6sXYAHZ61iOgHnhT_GZqFWn6SsyP7fSdKa9aPIKdHwQabfTU5SmAHtJiQnOerF9gKmvN_wt3MAycIuHJJY9M8g3YOn608C_Zb5t5dIpORtHukmBK9pFWlIw60xiKdcu96mMiNp1jliYu1IkzzAuzz3OjRZPjCtqX8zFxbsquFKkrR4xv42QIo5dxMkNV4Ap1BLScq5JeCb2Pq.CdWqK65p6ljkiDQYBELA60cU9w0DximGeGO1c2aOfMt55s6A2Zke.Y59eTtrFJ5Wbw3YCjF8qH8C_LKvHxOL3Q2rjdC4j4WDdJv5XR6QEM_uwYhN84ZhGyW0e4ahc2Ir5GKQAW69yiramtxlTGHq.yMo1xrBAe1_XmsIWNRGWilZBDxmaGqXMBj33XDqiNmk95bK3jEgXfmuV5e.NkRm9U9.JGkJ_obgEdR_OJ.FypsyOSIzOGk0NfjcOD4firBOKlKtVumkblJM6.zs_fVBCPpz4rXF2l9fmv95ANFcq1_gaV3IJMQ6aHTEzCagi3JM1xhKAmcguvTNcR7FdSq015vLIr8ylzbR.b0Skuzlvzs4WFMdPqP24A181P.VYyZqzsHKS1su0.xcy11qCoCzyk_raka7dYvypfrYjJjZ7mP.ueY4A_TrVj3aW5bclQLQM9JGjBXZ1V18iV9h433OGdEFyAAtccj0IoqmwEjVVXUHFT88zkFOoNGXqJnGuxrwP7LBaqlqb6LsrH86CKghNbnMu51XWHGTu69.yAkjqJboRFwLFadMpdQh.B9Q00rkkmRhozImha3yHVhJnrmeMPhUw8nvKBiuJseh34oMuCfoG00z3UN7ukG6TgD82fuGsC4VTRJnXCMD05ztvzLofEPjDflcw2wztorGOjg"};var cpo = document.createElement('script');cpo.src = '/cdn-cgi/challenge-platform/h/b/orchestrate/chl_page/v1?ray=9176e74efa7bd083';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, "\/abstracts\/search?q=moments%20estimator&__cf_chl_rt_tk=_6czxi9oGYapOOrbz_NSEGTW2O3uyZP0n6CX5DnhhC8-1740478205-1.0.1.1-lKewvQD3JIl.CIE9mkJXATo1VDwxCNcccN5dRizlhnk" + window._cf_chl_opt.cOgUHash);cpo.onload = function() {history.replaceState(null, null, ogU);}}document.getElementsByTagName('head')[0].appendChild(cpo);}());</script></body></html>