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: '91338f016a4c5fdb',cH: 'HP7ejpG5eGEeSkKWaeRynegu_r4nE88jRtxNZDD4bjc-1739772042-1.2.1.1-G00a4edkXOvzvWupx.2P2vf_WwAn.2AeQWmThM5WQzOFFdSCHOIFY5brbB_oIMGb',cUPMDTk: "\/search?q=Joseph%20Haggege&__cf_chl_tk=gZxJ_QaxNv4iLKfrD0TVjr0jhc9ygOXp7mTFWQOxxVs-1739772042-1.0.1.1-uSAq7LoFSfbHb9lJsJw_DQdIERN1nzEEWRGFGAzLEXE",cFPWv: 'b',cITimeS: '1739772042',cTTimeMs: '1000',cMTimeMs: '120000',cTplC: 0,cTplV: 5,cTplB: 'cf',cK: "",fa: "\/search?q=Joseph%20Haggege&__cf_chl_f_tk=gZxJ_QaxNv4iLKfrD0TVjr0jhc9ygOXp7mTFWQOxxVs-1739772042-1.0.1.1-uSAq7LoFSfbHb9lJsJw_DQdIERN1nzEEWRGFGAzLEXE",md: "XDB.2u7dH6S5izzKa.wjEWtuapuId0jcNuYojZPSqyA-1739772042-1.2.1.1-BOlnaJ1wUp2ooHdpWmhLf0_txtsZAmzFhSZnpl3sc9BdLWx5rsCbN2VRb8Wk0o_QeUTOyMAqUykmFpVY2mkVjYwwTCQevgF8SSYPKAEXbktInGqEhupthJ9F4lgCWxhFqaCXlcj6pxmISsvMKaZ6896jksUCnQ8r.obuirp4jzfP2bPxBhepMk0VoRQO1KSTEGw7I_YKnixb.re5BWRepcX_abKd3DzgF1Q7JzQ2e.XXA5yc0xlXnuJLhPbDLj6jZ7FfsD5StkgCFu0aUHb3wW0QiHpTwwKbrztFnLBh8FEvCX_w_u2ae3_Go8b0S2QI1g8VudbY1K_WEBPG.U6nLv7TwUKDjYlA3.sOXQSODho2BYhe2IGZu6w.SHdndpP.4bJOxQ8QYYuRk.MspyqTfTMSZdpetbXttpAy9tG0jqGtTYG2UPe3XywxuCAS1.Z7gVq0pya3nTAstqylGzY1J6u9o5McC.lSRN4RM.ETFTpGMMgBD9yFzT7jFfIHuBbOQtAml4QvbiFpIGnEhd8xJShHM9YqB8CNAEmNhINwVomtziyAbIxVpTGem.QBLRo8bWt13wfj5mtaXjJamZSjf146WnI.5xrvog50NwewRKlYJd_GdloJhvOz_ST.4B0ZQzxqDZovcYBeAG1jm01ouEHHM4vK9unJZ5S_.96XfZhKYuJbO8h8g5cIUhw5pvYbHLddsjWxrPsk4uBE4TOx7gjFxFUaama5LOHq44ZSKwZ2h1EmJIKSGCH9oySHUVtmQ8NGTQ_jDhcSws23P4d06NsUyg9HBZ1k6Z_cxCkmerysnn7mfipgExyjjJ9rOOzDBQ6ijy50tdHteG4vygHxAkkc.urT82vmFXyddTI_gHNHw2K7qrpV4qAHd4Ptbi3lvLaS3LfH4QiFW9id4ZuDYVEkKghu3yHq5.ONH.zyvJ8sNkVSNnqnno6StU_agSurBhvSaJ0EvHEqzpj64vsrPRBkRHa5MDCYuHVNc5PerSMORKZ01sBIapefSLXPmoi.l8b.g3lQeJiGBGTYz.4d_9n.6wEn3feM3diIgDYgMjWx2jrLbGu0KP6I_wpITtXOJV3zW74SmkwMMWvxraKCT69Omibqn3iivTPpt3t2fEIaPQLtqo27q9NmueMMQ1aNjl2ZbtUIHwMdOXzUFfempOl.rJJlc8Fo.5ymA3FHkzeu5sEDIhREv8pz8_HkSdg1AIMDo_bZ4hpxGhchXyDoooFJ_0pzTskaSdGknDxAcHZfwYJXFJHg2pCE.fzmztewrt70W0u.AGz6QBo3Zt_nrhP75sVQq4kgmZqahhDJlR4A6F9hJ5McD6u4nxUF0lmxOjhEW33DK47_wspzxXmBYCrarmHWbPRdiKowyExJjyEaA6bZ.qh_D3vybNIca2nALSaj3j3ZHj0u85mUQzrbVDOhSDgvy1hB1FR9cvA.0XKrD7P1ZEZjTnqtRrKmU1_KHVJ3kBQ48uHHfyBJifTQ1D_3eldnS3c5Le6yKKGU3WTV4IZQXlD1fl4u2WLaDFgiSW3OAQBdBn5CyHlxsAqPRV0.dEo3AeZGVMiAdx4laxGj.wA30IZVSYmY74rP3yfzs_0VC2dW1v4Pvga9WVWkFwdlV79GsqoVOx0sxl_H9hzBvM_B0TiEqXxkWAfmr9_Z_ZY7Em3h6rOtAxNCLG7O7K6tsRoJ6xgrXGrbGPkaI4MrTPWPG1FVI1d71zZueiAvhwzEYldrIxmUsh.94Pe5FM0y_dfgug5AoNc7wIjzuLHFA3UOKHaZOPogbT2OYclsx_pSrq0KBkAm7KVKLXVMwibebgGbUBkRzwArdAvvTp58ClTRbpg2kpX7Ufzxp6AMyUIHyX_hv1Gj9Cgw_7rrJE86WKqVr2ZJt4ETmW3JV01utnO2OOvkmFKQxnw4sZYj9b3D4dzBKnsyw4AQabLMeA",mdrd: "gb.sLyNoxgl_a.sPuRdVs3asby7Y4z_aBQjA2udzt1I-1739772042-1.2.1.1-IcteBgd4mZe8tVc3Vhmn9ZelXeN4LbDwsEk_S0RnS_iDHRCp3S_2hfYnZBvQoZ.z1buYg3PUx2Zg3eDHwKc04nMTX18xSemjrMbW8fSKZzCqdlg7PtH.T2zlvVQ5t1ln_nDQ32C6LjIUIMjY8Z8dFYSrZKGEj8lD.aNe.0iJZTCIfKANmIHs5Q5SsxzTlSIi0NVpdyb9D2ooGy2.naOj2ZiygBh9UEK8vG0pPmz6Uce0GIgDnvRwahzc.GtK4V9mfJwREjKU8ebILRsGYT0yaS279uuoXlAF3Q33H8hNODYOP23GwVjZxSsmlgPImz.5YOsH5SE_6cllFhOwSy245S_XBJ6Cr6BxV2S6sN0BI.rFInIg7JSpcGALegrWb1PMWpsM7FtpGBoN56MJinkYg38xn4_EJoB9r3Eh3Gc5mDcXZTVeOO41H5WksqpPGUE_x7Z2GIvj3PK6B1dSqx7Ur0QJBG.hJ0UYO2QQGGKAc11huo5JY7Gm.tItDu5g4xoid1YtsqI3ZIa_ZVDme.FEBYHwtN_IQI6YNpWXjtPyokxjQzRPFiUbD9Sc30jCBkWCO16x1IjjDX6.CHE_sd.O7mMoBtaXLgh_aS7eNrS5Cu5JPDZOy0Oj4sztodSfcdoc0chbj7r8LruO3l8DpkwLTFtjnuZ8qXae68iqaNMk.ZNxy6no921Pqc8lchiAseYBnZnEGtAPCZvkW8Tc6vyJVuRyWMmkxJwhYkINWjZnKRoJ53F0SOhWNV4f5izZnjtJhtCkTTekkIBZi9rhIBs.PZkUCLZ49Xmd9qPozTQ2T0VDB2HIhoCAXTwAv2dfzJoqaHxbXnIheZpvMuGsN17fxx4MqIFuPvNdsxOQplaPQ3.mJDZFmS0vDe9hB099c4u..Axa9QLNZBL.YZwOhZjyqHee6ysRDQmQWofr8hLjLqnEc0BZhf51MAFPvBXv02v3.b0iVgdnDAW7AAqaQZuYJAAIPjsRgFJw3grcKA5XvC9MtuktIt26.UZdxAWfaMzsLC.rQdH5YO5LM1Oy4.x86iViWCrATHwbPh_36egZE8Bb5MyS8gGA4BZXNjv2AQBfpN9iZOVXJe.HLM4y1Agwhr6Ord5Y3nBiLcpRfqwftrrsQFOoV2ltf.6KdgucLDhOZmrmyD2Pwtas59zjGZrhdz2I1k7cPZFcp5lZFeH9.jmofKx1ZEEtfxh47LtuYzkS4W4._hP_A0W6rryZqFZMAAnnNUm0QYAbvNxlMMGNh5zTmEjTCYikyXAz4lBMWE3ZM_ucMOXZnSLtyv93OneBUGmmm6r_BElieY9hn8bHhPO19ucYD_zGYoU3jTa5sJ78syjxco3vi4JBwGuM1nGMT.MOLaGSHTCYUHd93DASZVNBgA3gX3LPlh79pqOOI91m_0J1cUifrWBcZpWjaKeo9ZprMrChY2wlnMV3bzOIxtJGG_TzYqViT9Rg0GmOJnlUcoHOBfOBnLmtv5ibF1doHUZEwCS0CIF8jBY3AuU_wf20c8XvYr9jCqheEg9BqRLwktf3MEx.h9vWG8wjvTnyDh.V1WTjjgqBxbF2aZirOMCdELoeQLWk_LcimwYLA5qFOjeUKBLc5jbMnkkytfXLa.3l2kUWpbBOdGhPY4PXaIeFKP367covcFVOVTRZYAxfL_XngbNXJcq1tY7m3Tuth3QiOVUduEV_E9xlYZM5BNizs1oI.WhyQPhldozcA_zW.ekr6T2TDhnJUMWA9VVSUzv_.8wC964TOiIWEUyf7Vw9RSMNu1hwJ7Y82bA8rWVJisg6dRt7xZ5LO1iUAiTpSipD78NwkrJukWb_mGQowiSTNmtovj9PZDPh4MvwOhloWm0fWVg6NQs8eGO8wa1GJ2IC2H.RfVl0QrfaHCADLV0kCbsNd2EnAlmwBwE2W140AkywoiuzA9KDC4zw3XbwWqJ87J0xD8x635gNLlkWUkEmJoCg7_MrgRJAstd84Zjypd4EtrlD6NrUPUxs8YqWVw"};var cpo = document.createElement('script');cpo.src = '/cdn-cgi/challenge-platform/h/b/orchestrate/chl_page/v1?ray=91338f016a4c5fdb';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=Joseph%20Haggege&__cf_chl_rt_tk=gZxJ_QaxNv4iLKfrD0TVjr0jhc9ygOXp7mTFWQOxxVs-1739772042-1.0.1.1-uSAq7LoFSfbHb9lJsJw_DQdIERN1nzEEWRGFGAzLEXE" + window._cf_chl_opt.cOgUHash);cpo.onload = function() {history.replaceState(null, null, ogU);}}document.getElementsByTagName('head')[0].appendChild(cpo);}());</script></body></html>