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="390"></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: 'managed',cRay: '91e887953bcc3fa7',cH: 'G6S7y0XRjGrjzIj8YiXPXdf4ODGi2nfZrF_mxNdQ5Cc-1741669661-1.2.1.1-6lFPUR4Zgq16hVg1TrFxPpyGgiKZKbFDVJ76QloFB2Q7yHGEQeCUi1CKeznW1.7C',cUPMDTk: "\/search?q=Nassima%20Elyebdri&__cf_chl_tk=ShNhWq3UJQA6dagu2N5BpBX96O833_BIuz5BK6F7LUk-1741669661-1.0.1.1-kVFbQPLXT4TjDIfwLTUS6OOYOpmD05U.HJHXpPspCJc",cFPWv: 'g',cITimeS: '1741669661',cTTimeMs: '1000',cMTimeMs: '390000',cTplC: 0,cTplV: 5,cTplB: 'cf',cK: "",fa: "\/search?q=Nassima%20Elyebdri&__cf_chl_f_tk=ShNhWq3UJQA6dagu2N5BpBX96O833_BIuz5BK6F7LUk-1741669661-1.0.1.1-kVFbQPLXT4TjDIfwLTUS6OOYOpmD05U.HJHXpPspCJc",md: "iPzc7nZedLY9YEsmXAk9D4qwa8pihTN2Qm5OIQlHWms-1741669661-1.2.1.1-pjJXo1zbVJ4ApMXxcpPeyJirc2Ewb4mkDBB87MEsdNfhHay_Xo0gETcYFCRk5EBm4Vr830Ff.Fabca8dWUiSNZ8cCDDL2YQN9ySa7PobF7sGaxWl8OTjT1.amxFL0mxkgufWAdPWWaZpgiSiQs2GR3WVHjhKpbHLetZAqJ67CRiNRYBFKV_8je1NJysWY_j7IRA8_mkRr3tjD5McyQXRAeLmBpiL3l8mj5CTu1RGAJB.8h33bF2MtCvkFP7GzBpj8REhPQTwrjQqpqeQINMEw3rkGNNPeY2G1GqDbm8n_7TsHvEq9FEjEPB.6cIHiL20YVREfEUjjzOdaHFX._A9ho6E4NtgjyZS2SBBDbdaEHAcRcNRgqJi5l8OSM6onNt1yVTCkVFNhHSOgk0v.hsFU1MeTBkloEWIVACEsBfjb8DfNtLMdi9f07Sz8OoZdkXE7eapgofEctQnfXDv1q5gahBJbPlOPT1J0xFhc4nUfoqdNVr8NmtjKRMnI9p02204wgYst7A32ebMSahRCugZyHtUYr0DFHn70kbA_IG4fE6SIywHCGdFZhuhPTVZCcnhW_OfLTyH9kp0mLzD3J7LW8fdt1MCRbV5Y99H3eeGgjhgHRZRuHwbEyEALxJyn8Qm9BiKEk3vpt4pd9ca9cDVn5da7SAxi3qczbbY5soC6pQB0lhu8NM6almZ96esOi1kEYTRuxbTTx0eFV7H5BRhjFsQW24D6wUCX3BqnAeKviGuPu3toWjSawzOkJnTtp5xw8wHi17j00BINDDXrWDpp4i58ho55tZLCHenSvFG62aNg8RMLcIjhRxYxMGXhdPC80uMTLhy0pCUg8T_zAfyd3ICcsucfCp32MvbKB_A3DzIVTd047IlAXxDdRkhkfD7dzi_1swamzCKM6TbEN5r4WUX2.pq.bh8N7LroLLQiNwMenFm7tmI.ywkYk.eMchdP52o3Fx_xOOaK5TsdBbX2CpkwtLVLUdx31uMtErRm63UKFvqEjcEQoPsNmHYQbY9ZmDZEb74.l3h15kxeb6U984l.xdfzdBzaYgyXsrLXGp1gW3ozYj4L0j8i0FT38dKj_sHHbfaoylUjQyZ4LbcSfV7wIum_AH2TX6yynkBhfdrgkGPsrihpX6b95YWKmy_Shh9z8AcCWgANpDOpYVKdT0iNUm4EzLtkXxrqZubmJMTUNEaQxMv6nmwFGdcdQKVZ.iw6CspjxuA3lbjg2EKGNuoJPLsY9QGsnKvcapp7NK3OItJ5lAcS9emoIT.GKG8",mdrd: "aMWSNQpfuH_MSdLI22_NqQQQXDP1qWOU9a4UY5Cb0vA-1741669661-1.2.1.1-xb3GC5GETgewf15PSRe25cfzxkaVnirfkN12DvNala5VhCi63yU1kvlE.DfzW9qwCS1ugga7eo5efWE4sNdwDSyrgHTpMADT7Ldq1omkK.99A67w0vNPkra28mlb4g6WQiF3t6U1JJvCei3XjctSzCSMkwgEJOsag74K7LzvOGbr4lunmkxc_nEjNL7SDjHHSA80IcIt6qMb8EY6a_UaIsMZHpGgq5aN9s_ADAlQZFNT7g8qsAyYGfIDKRl8ociqmFIIESk16CCM3f7DLhUr.o_jpKG4kj7_lXITWZ51O0N48vuR6jFuWjzS2u8s.NrGQT57hvML6_br2chsIxWNxNOwOAlLyqerapsXY02XNHVOjCf1NOj0CGKgHKDjGlSUR26O9g2uXhvriuik4r1fZSKJ4xNB3jG9p9ERSQU.3tFaLMTSRnerUTEw9kXDuIUzeWIejLc8e75F9gJRPJk3maJjW0IHbamKxX_hT_3QO5XdJ15UFuUgIVBbkmFFdaWGVe9rKfjgkKjgJsC_lj1P9Wnd.kLCHuRujvcjkzWLoRcMboQhn.INr6OvyD_jTZG03SR9TW8VLACZP..Jb63V3tTaELhqbDrIakMP.ab0YKQsjsyY8Tue_YzZ6UW5lTT4ILmD4ukvVpWmhQny27lLacsfQX_mtgvr9UqfYEfD49j6ldjoUrhhKwtBM8anugC93oaTN4BvHPdOw11OiWjUnRAVxA8OCRLrx7ZyMqpFnbWgeKVazS.HPSzCWm0gK4rWBeACSpxSGiS8Alq33Gek_MXtL9sMtMpzNdsXd49qhoniThc13qVvNf6Mm2XtO93KWGCpWmrEoltiXY9hfW9mZUYjs2.HDTzQb0Xd3T2u3CSEysWtdzLq46gFUgrsbmlTI5_wLgPr0OeBDnVRvtfp3hOlzz38JhIo3JznsQcKeqjk0HssHovUwWze.rXeOpJH5Cz3LiM1mtOWszwrokiH2L7ZhApSznXbg73zdEw29Nd.G_ZzfXyB3vt6VKkTpMYD5.QvQA6w2jKH0qFVr668F1kuu75OPXUDkpdUC3DSNqTyz4jxZFddAXi4vBtG6ThMaguTBjVkdIREWSlS9vtX1Ccen3nYT7W6zZQaYWypUYkDQH1Kz7z3bGEggF63UPCRQpdFflnlZnbEapCBhVOPoWy.UQ6jzM7753mr4NoD5O1F51acQF3UrcMa2YgNHuk3h09bAf0TYJMKdsTBMEmLIgyx.Yu77wToFZV6LzVgX5LH26YtG1OiiQNQH7XO7XPXxOaSKSIZHs7AfKS19g0i5V75_oGngXBpGwo5KjT5tbgKrORKJGD1oWaX9qtqju1pQBGaaZ_uR0LL1dm3gageVz22O0NR7OBX_OcAJXmdpl1buIhXW1HiEc6lC9plCSXefE_DQBC5aVgJAYTyXBvjRdt_zTr3IU1VIpjmM2_vC1Plv6.494qRYk0MDj65wCLlz9gPFBHZKseFcZDycSiSzm7..85ioWl5sclc.apHdX63uCk_hEyYzuxpvICzK8oEY1F_gN7kfvZXh4bn3yCWZhZxJ4RGcmhZ7Jp6FpeDX4JvEmnm0HrrK6wq8LRN.j8sq1Cbo4W1i96gnPUs6Cz4gtKus.9IcM4LTm_1iQM7yuFArnjjWxIIUzH1lzNVeRAtGTjpcPEpUIFkw4sXZ.5AjD7HFwdEYhRNLUMTAmTMgE6peugWII3nCwGRtsnGl5665pcFr8T0PoG36GyyBKyUfurqUTRdiQ6Ca68XP_OnOBNvPnZTS5rRbaui2ImWEfS3eYNvk86pARIbZuRAzu93C.jIce2n6x43YiaUbbnsksx7t4KgzcUq9Z4Yw2vlhKXEanpQK2jVwU6Uy0r7igbGs.QAC_dvZgu4vGBdIqS4Q9WLcyg9KMaFOn4Kvrg7rmMZ3OPYSnjCGac_qWHJuOSkV_yp7Usbox_YkIL3T32lTu77v.0nabgJx15ehz8z3E567UI10OlVd.HfdQOt4DcwiyquXnYmPnzDgs2WoP86WYs"};var cpo = document.createElement('script');cpo.src = '/cdn-cgi/challenge-platform/h/g/orchestrate/chl_page/v1?ray=91e887953bcc3fa7';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=Nassima%20Elyebdri&__cf_chl_rt_tk=ShNhWq3UJQA6dagu2N5BpBX96O833_BIuz5BK6F7LUk-1741669661-1.0.1.1-kVFbQPLXT4TjDIfwLTUS6OOYOpmD05U.HJHXpPspCJc" + window._cf_chl_opt.cOgUHash);cpo.onload = function() {history.replaceState(null, null, ogU);}}document.getElementsByTagName('head')[0].appendChild(cpo);}());</script></body></html>