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: '91363e60f9a8fdac',cH: 'p5R8RvlyEyyh85aYmtyK_gRKa5jecw_AclOs7lu5UPU-1739800197-1.2.1.1-K1GKXSi63zpSGSpJBLp9l1EA6HBaU9URBwncz1LxgUnKfUPY5J5vUz71hp5OtLA6',cUPMDTk: "\/abstracts\/search?q=variance-gamma&__cf_chl_tk=py_RLpfAadnBRK_rWaR4bP.MEORYWkO2FKYGf5qBYbM-1739800197-1.0.1.1-k8N3scI.fSc6tCZlzlUPhCEQVBGSyhLRh.mwhNDSrmQ",cFPWv: 'g',cITimeS: '1739800197',cTTimeMs: '1000',cMTimeMs: '120000',cTplC: 0,cTplV: 5,cTplB: 'cf',cK: "",fa: "\/abstracts\/search?q=variance-gamma&__cf_chl_f_tk=py_RLpfAadnBRK_rWaR4bP.MEORYWkO2FKYGf5qBYbM-1739800197-1.0.1.1-k8N3scI.fSc6tCZlzlUPhCEQVBGSyhLRh.mwhNDSrmQ",md: "e9I7CkjLJFo_yxz572c2j_ipC2R01X6iH.P5tohDWgY-1739800197-1.2.1.1-oVzuuczq4FH4HVFXf6C5qlcmAclrQ6OclFUM0YHPiftEiDLeQGkp7PW9NzxyQRaCvKUvvnacgLzLeG_syNW8K.2.wYhE5y9f4zAWOiHX_o6cSDYp1qd7peMjcl_md5FKWGYFBnDg4QPbfI.HI7vWg4bi1zLbPmX95vkYSUrQq4HjyY6qfZuTBQ1afjn1OVlDVfpIgw.R4MIgAdrX2q4vaNfBKi0r_MhS6aUCDiFAJdammg0nPIrq4GL_ZHB8iZCX3GNKTbWOjXXIWZ3Jdr0JjC8OJgIpoWRnc6HskIilzQA5wIqOYhyIVYubDl.SS0HpNiJieRziEkS0Aa6UfYgrnIqRiCfCqgcK3VEm0_gnhFvZpKVXgHvL8oC15HD2zWKd82rIMxSkvOibpf3gLJ9Hm34lQiFHDU3HF3vYhVEN3jynapZGug8EdBLr3m9Ixz25vYJ3.1hkxRufxhMXvNWRJ9GG98LQ3ZkUHHdiiESrgSA.ar8j.vDKl337S9e1MTHkBY0G1p8aiut1VT10EXgHDw.b2YErcfH0rMOldIQi6g4ROsmqm86UcK8Mc9pCIe3YIz4goCv49K0qLG5Ybveko.68W8qR7wrV9SJ9OnpphKwBEeoKjMYonlA8kBgTEHCjidQz45QJ4GbyIfk22DltR4P2RuxPGjvxOGnDm5KYnyAQg3Cq_y6cfuPJogG.DM_zTQ2IyKCR7PWiWFmGnirJhZtTXgCQaCmZlVU8gBPhNFqCqeRKqLSzBuZ33h9XuZS4GLgbBd3WJphpYD463j01j30Fi2AveuM2xVPhrHkRzWkarQ9LfwFPP_Uh3ykUdMzPzSFrnQzpgb1aascetm5UwVtVnsex08Rk1eZ4kj2tXNYZQw1uxI5gn8.iMQz5etra1yal4xLkpzYbO.vmec_9rnMOdQDx6n5UBjkMHfjuuiIXta5fZ8rnWs7yo0gOAySRYi939aUnxz8.x7oozsL.NtEGASL5GO.4RLNpkcVSW.3Q3vlpTiKiTDiHKpJRIvlWk3KgvFSplHNjCBZTeKFpPPvT59HEmwVx57GjbH8n0v9rolOeJ9AzeLRnMyhYqbFGwuBhFGcb9m7zwQEkIcAM9EW50kOvgIjRXt8dCDX_9sVekFKfECobSGxZrLfk.3dD2aLg56vdS1c2kKIAvnfOX5Bh_vWkIxD4bxZ8UxYd4H.DE3UAKz8pFAiubXTHiVuUpQxxe.zp6XfIHBB.9k_dCU2MlLmt1JtfeB5kfyV8A1TzWNNA_I0hvfdrUgJlNq1kWhHJraEo437sz5uJ8Hskfcxv2HWdJo4T_awmkMeF8iLzve5ltWGgTa_aR1xVUOlvHTnItEVWpPV2JERG3p9KdgRE5SGCu10QbCQRemWYh2cOvMwHraLq1mFOsGVNxs7v_P7gYwxS5IXRKM_xumWURZv04wJ4bIE.4Yyvk.cM6K45BzBQ9ub14kIvZObNIxOgwGOXKYr3EEp3RaCOZNKvf8kItJm0cL0em3_tU6vB0sHpFieqG66yjXu6zUabt24V9dOlg40Z7x23R2Xxvyu4PNECcWpJ8bxrPt8W.ZSjZU5yNZIZGkx9laBJl0Dt8WfdXVaQQysD8Vop51UIbewRDDX29xjzOdtmSRyQb5xFLSTwQlyfdlJt.UoBpoR3b8WfbuByIQm2ehoLaJud_NSFabTJNk7T.57tNLrzzetiD_zH5SwufqLBlGOldMVbhJgUNsZ50v..3w1SkX6v6z4yxCQL.7KvNIof749lxzFU6d8pCZZJ8.a8akhSubcENtC41i3DRk9NVOAVso6M.L0t8lLwvhbrcRBPVKrZSF7bzL2XtWnsmCgE.hY8UslpYH53jJQ7Htit.WjYl2_h2JcsWXqqA8FcIihIy1neEMuBSsEtTMkI6wyXShTCkatWgDvFrLjo_vsY6OloZ4OcNX7uKsGYZ9emJlAxpA.HJFX1XlY",mdrd: "fM7veY1i6QGqja1gtn4WEwNotFH65TWRlsQ_aMLe0kc-1739800197-1.2.1.1-BZ.x6YQhU8FVHBHqIm91Y8w9JlmiR49wW02JHuWF.qw.zmqTRPUTFzvYbo96HNuyAMCBRGOcWGUra3iDGHTw1UJ8Iz5JcRkE.OrMh5.6FlX3m.uDiTbZpYhFr_YI4KMvCEXbH0qdhGJK8BVKL6LRnVOupqPALKiTOlIw3zC1KubNGvYtr_SfAzB.YIxNCPEH4n0Z9V8_hoUr7T9IQWuqzgN8qTfOvZocweA1l8ntGsvwjDgcoGz_it4HFxpBy1ebMKAfR_D68kafstPf4Z3xV9O_KFI9Y.ySvXgPhAGTa7411bW7p.trp8YyExv7M4DV9bM2g8VraorbjLYm6fRweRfRU.Thm5wj1vIge6lNfxaSvUTLYIUemcz5NsycTsybyt10FuhewzSjlN1AUVCctbEkHBEHy.ZDJ5ZkT4ejWBX5YWDkQkkdeTwNpA1LAFfMw02X3HOOLO4USzJIESf9Qx_2X6Oxvp73PuWOEcr0d9xhfH49OWkbt2lfAEqGJxKutgxHR2AnUFqC5xqUY73rohPxd0dULkX1UaCJBgCzbVI8xtLj6LcIwO8gCZardGZNjxV1w.AKbZBRR.ZnfoEbBTqe1jQf5e5OBeR1A7QHehq8Jggwu1mHY0vpMMp9F6DJZLXBtFauqV3fJUitKjXC1eovkYeNty3juqZDdYNIyuD5IPo.CrOcH1qo84zPQ8a6jSGSExbRR77UZWMUzh5tuQ85dtC0vS5Y2Nqk8JHfFngT26KPTJ.WwoDH219Nbk1OCn9a2sUia_iaeJuh8l6HCPugFzAH2iVQg8SmWnAXRc8klNjPNnopKW24ZYksLZSCJ2CSMOjdy.PJsCTfpLlqM4xTiGHhl3YYruQizwazygU.L2X_TLRhl2nRGMoaTNBHg76xVWi7wC2a2_UjAD_j9E6MpyYcjNpmDXT3nbqf7UOQcolIr0BDTOAkzpO24R6zlVkEB2dkkcg0DK3yJ4k.vHVcZSY426ttPYmgBs1XYWW.XGnEm24lN516c_innA6ZVf21.PaPRMhQvSio6h.WBYFWJ9CsiAugJS2yBKq_8Xd16ji2qvFdGIWbpieykVHABG.bpEyEPb6diPwb7A_OHh_WOaIDqKq0mq8WYh8NtNPaUT72kCH5ksKoG4mMopyO.DDSdan23fobmbWdNzCwwVVze71gt0L9BRB2ZhEwN2NV9NPbcldwHxxwo0O4MEU6Xtj4LYJUhe5JsBZmspmWoz7_4zrRK0U2pUsCyWVDGUyM5GA9X5pM0oXf7vXyyrD5FimtgUDjfOqzZP7_UOSnvyiEu5t2bG6BSbkvqz3kqkGT3FwcUUcgC9IGleryia8T2RQa3Kbap_jC1a3TaqROjpoJUZDN.tyh5RI1gczubbg8Hujbw2icZOd.yM9QdrSwHlaK9pzcuQ_kZxr6UzxyTHBGYQ12njYJYWgj4NoDDZFCXY2XgBmTRaE01iE81S7XlqlZnLG3.0jNKbctPrExFiISEorxpjOvfAPvvEKiTTTevDirCf8xoM4Cm6..8Enj69jCyAwopGDIOlSmy8oMlYISLhNm0JjGGBq9zB0UXHfeWZIOLSdcvbXqSYIW5U0LQ7KNuGb.SNb6V6Dl9xwL6JPNbo7PWP6NcuLIDRKbq4DCpbVmAugY9RHFydPOGwxsQ17r0M6qk4H58gAOqCyDvVcZe9KwQH_n.toLKkfsLVcGTj0.9_HqyW_tyUIE87G..NXf0aa3pdJfH4pbIsarhObMmG3rnA_4y4t9KJvRbqjXvjOLTLkh4_OCjLHKrJYcIt.S3yUaRaLg7UHM8FgzqaJ82EXTwbtUDNcsMVReUP1neORIYJTI7JPpjWfSu4XodTqT_Nx9BiIoglu8M5Bs4sJfBrOdWsVKFToAo8TIm88P3HfiwsUfMW1GjhzXLAzg8KVk4ONgInTKCqL._ymK8ViuorQwrkiYlYI4Jb4zXcOXcE0XtNWE.cigii5K5F4kBSbs.JFqz7IIH3KY92YAwA"};var cpo = document.createElement('script');cpo.src = '/cdn-cgi/challenge-platform/h/g/orchestrate/chl_page/v1?ray=91363e60f9a8fdac';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=variance-gamma&__cf_chl_rt_tk=py_RLpfAadnBRK_rWaR4bP.MEORYWkO2FKYGf5qBYbM-1739800197-1.0.1.1-k8N3scI.fSc6tCZlzlUPhCEQVBGSyhLRh.mwhNDSrmQ" + window._cf_chl_opt.cOgUHash);cpo.onload = function() {history.replaceState(null, null, ogU);}}document.getElementsByTagName('head')[0].appendChild(cpo);}());</script></body></html>