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: '913503911b2cfe0b',cH: 'tyqTTk__9nOIJC04KNHZszmXGPMcGuIi4YvBCVfcXrI-1739787302-1.2.1.1-g8VUxDPepNYZxiX.Spe3D00S5lRAj8dqdr4jdmG96t8t790OZWO9Aqn7zvrv7lbd',cUPMDTk: "\/abstracts\/search?q=freedoms&__cf_chl_tk=VRYYSu2kbvFbZGxxQO5K4HrcgnhpgQrg5gZ7gYWPaY4-1739787302-1.0.1.1-fK23vD9pJ7wlHrP8gjx04feO7syOpIX9eszSPW1s40k",cFPWv: 'b',cITimeS: '1739787302',cTTimeMs: '1000',cMTimeMs: '120000',cTplC: 0,cTplV: 5,cTplB: 'cf',cK: "",fa: "\/abstracts\/search?q=freedoms&__cf_chl_f_tk=VRYYSu2kbvFbZGxxQO5K4HrcgnhpgQrg5gZ7gYWPaY4-1739787302-1.0.1.1-fK23vD9pJ7wlHrP8gjx04feO7syOpIX9eszSPW1s40k",md: "51wbumu4wnxWp8afg1Z5f0K1t_CsnpcIBsi8gppOsXY-1739787302-1.2.1.1-WAXR1Bkm5LzeEsrTiRPtBPL42Ws9EmFDQabRMbCbvLRdX2mPVtjAr4Bv4V3Zn1gnmeGtlbSPelD_IH3Ro8QAfxitwuIr23hMxSC6AyUmt_JOImuHw1n0FCv5v53GMzLVhvfhGagDy83kNdEzwMG4YTnjPCaB78IM1_I37GPd5Pef34YC_vyBZW2y4L.peYosVZs7VRQ7aSclSTokNs86G5BXR6yHKIWdA8QQ9YL.pG6rOd8lL_nLE0KI_CivFDUdSk5iE4YP3Y2DZlIoiZA3AkbbMhU4kwUht2UoIjtUdo3uPG.Caac3JeuAmB4QI22qsnYML0eCN3sgoBiTaJsxqiOUkGBejq1.zahU6VpRNWR9JOT7vCYEUOrJKbpIIfucXfZfox9TJ3ovPsadx8UMP0BUIk7hUhgB6Db1uTw2wkSK8YPd5f8IxU89DQQSJ3WppNrYw6Zi6iDJZRvIQg6CWsxYBKFeOZnDGOU9.GuAcL2PmTa2l8OggBdrU92lqFGtaiLIpBlKBZllruMBYGTC143kYKDbLH_grnKWptQgBfwELNnlw7V9cfUBVr7qEZwftsy7xRiZHSfz9rIWGR4HnU39g9qYMGMeutG7bEVFz9ys7f0EMI8ltiOVV4Yte0H_8dI68.AsI3yWhxlXqrbO6ZA13HPnl04BB9zuIwIkYn_ZTRD8LylJYGAG.UAnfb_OiTTlMfF2LK4e57KgUWLUUHNByzxsVhpx9SyT21s70.M77tNN6MYhW10kMknuT10gwe7z54sWwhLPeQPEFobeGK.Ffx9IIKUicneOZZi5aHiuBzsWqnxm5l7KKmBosmjj_DVVqedT4RJq1nRCpetnP1k_SbEvx2hwnE2OO4uB1kc96QpROVI7z26XbjAYgIrXbo2ueh0kqrIq72JdSBgcJTmYeOgBeIEaYtSk6Y43O5ekwjEX8yDI4dlqds20r1Rcpk6izWk9zd2ymVAxPAnGxS0DAXsBrKdNurhKSY6QvSBsnEHI_gA_k9vwMkC6IpWqywd0.qumFZCy5rGhqO_mi_IMsf.9D6_E_kedkkQOiyIgm.LcwZ81h9NIF9h0uMxTY7pi9kuCPRXpwnXXmjgB9DdmRMHzS.O6LgvSSCKDT1jo8kM1OqDBTyjopqspgS3Z11N7Be.ooR1OJJ0CWLNriZvtvdg2lLPi14cw9t3mr13M2VSkiGs1HaNagGJBVsZfNjJo8Lw90yKnjrSlrAugsa7N0Qida6FiSu6Fl20Tb22LPfBg9IJV7hLy9Z_layqNqL8LZC6Pdk6YZHVT1_tvfKsQ7j3BSsRuy43YNEzeVtPn_s2vpzxMiLIbM1Z4C.enGkFTJrMBlF2x1.7e9afmy63a3p.V8R0EaxYvMFNT127.Tb6CrAx8cqoNAKXDpuyYo8fV6leIE7iYj9SmLWeNlLOK3oDJfCW3gUSU.Omp507eN4TrFgfuVQYLA6ZLJNQNU.VMCQo0J283RznBZLFKVXg1rk8lPMqbZPFac9ZCcRoogKvP6ky41oxANsSvnRUhJ5DUBGJD_MksqCETffBQnvj11B0mKMImLWY13SjpEljIkb3an2h0CZ4JZFU_SnKG0y8edgTlXVL7YISoRdbMjz1S0HVPU2f9ngbPUXwkHSH93OJFtJX5i9drRMmdTaVtEgTKOQWUAkvw2jlDFwGd8PlBb8ib2EJK1rVxtG0udMORIhysIo5hD9kYOUKGw9XTvc7._lu5W9x8_5bDYtJg6AdUPuqB141fXw0cEFh0rMWCa4XDxUacXA18PsZVl79X47NWqFu_dWw6C1aBaM0WjV_SWT0viNMlRqTyZn2cr0k.GRqFzA_uy8syokNksGFmT3Alp1O4tbffo9joY9u_VYc4qrV7oEPbuFjl5_ATaPFuPc3u1FJaGq0IjuE0w7cGRpCb1.DUWGjTur3A2RfDjQ",mdrd: "zlXb.VE2MwGC5GDi4ZgnvDfo3xdPC3jaFcSdnXzMkd0-1739787302-1.2.1.1-8EqNMLYIpmQX08HaV4N.tQeLi5ttmWBchiOKU4JsDu6gDwZreR2Up8KPUm6gIHilEDzuhbyaZcyA8E1wc1kq2hAhc0dzrrlTekqaQlXaniAeJALMaTejw3qKR6z4m08Vc_q3V0gIB4tjUT5UoR1ApfLjr9zSTlmkPfdahthDuR1WAi.VSIKjdt93gloRj5D1DdrIfopFmLjWPPXS3hLzsafDKFk1wM9mfdso6rC.9CAOH269gc2nEZjJO_gAJ61OsZSQMr6JOHcmayFP.Prg_29fAwYLb9MCuWf1fPcttN6PPzPnZfYqlKhDEwpcvZAOi3pgkF0Jb3e1wBHtjJDRjdv2K96c6jnSLgkjsITDozMZPRzK580xH_lY0zJL9vdZbj6pas9BsYkrnGEqbwOjcbgoNaiarzzkntT3de_sgQy8eSk.Xg58rs4rUbNN3odHGabB9jt1Epns.lPGjvWsBBPGSU1t1SKQwVXzKQubhxNvNS.j.MUq6T7iwmkH5LD.n8_MKcPnCh.F_kB6cL..fBN8Xp1sRKnprr3bqmPo5wGSbyzFrFvHrLeP0LZ9fuofqTQdxUOymVOyv5_I8FOmP2ZvRt33mLRzo9YFt6XrNSCNvN0nqBzODFGkxtcd6yNM6tnQYmk0naAYP8GWJqcsZA9twv5C2elonf7KakHqUnY5ik_HpIpecxB1_HZJNfkDzh7sMQAmBtpHBu_b3QYfExjZDka.lfp96r689gLOfsxepH.mQNoGTQB_4dLk1iVIGWFcGS_MBszoXVeHjgT5ConmhpP.06_Tpivpnru0dtc8Me12fvACbQhGpQLeQsFxzRVi.6HolCnIDAEZOwvgLGmq75m6l_qd7wdi1RF3TlO4kdaXq27GlvrHrtMtxryWDymNehOKdVfN2mk6lnfxDJIV4gOVa_UStej_gvx3xfD4Lf0O4e2C4sg_HjbhMrvMfh7mRfXtyVAexr7hsvAw6A18OWwScuRgSyldZoAr_8cZM.1KWBRmn6jCW8_.ZtYeby52KqjGJJRIlZy0xWzx7wRZAxuq2KTjtmBmdvPiyTkhit3T481mxhKn5zF60SYoKI9k5c.Coa.wO1qto97oAnEXg50xUgxqwlGqraaRaphozP7x6VwW4w2TedHqztSMeyKZPnVlEU17KSBrxDqJodaeMpWE72tDLL3HdqfDJSsYxxY.UstIf8YdpOk9fwNwc94Fqx1P6fghBpVceb5s8dBrNPOFfCQeKhA36muGl1F8v0.xWqTdU8B35DyKgCbDPDi1jy0GgcK6jk8Bcdjol5rNPw6.pXdEOdmaPvKomlF35kYbHQqQzTluUraHf4D2HOkBgtHG9Srkho_joUM8JLA.Ad7eo_42eFxn1u7apQnjE6yvPhIUiM_.WRtCRVuobS3fnaQ7N071eGdCRNslHTvob_OwPi.iOFNBuYGEpDSpHz6a0MJaRo803R9UkfePKU0RmrO5.h4YO6rVRZaORtYCpeEH9FUOLatUDVGOghZoYpiS0Ep_VVP8ziRnzlaa6C9kr4ACWKNklx7ZLIyBvY6q.8OruJ.DuwE73GO53Ui_Q.Njw4lba6WeJknBn8UWHHmbFn5zts1gVUuTwjjecqdY6t2oK_xUHIDbjaoCkeURiBBhhxKk7.whs.9ZO.JqKXxls_JNxEKBnMjKrjjfCEjRjA3SeufrWzEqU8fXLf3OYCEUTtPYPgvwK3OU8Pk8OOrLTB6fh_hFRIx3XvKvvpE1rWiFaE4Y2wo0lfIxGtc34uGTZ54uHo8XYHYK8eh0X4HnN67ux0N8MEy_Fwbf.XFsOcqFO6rAlpe0moL3Ed5fRxcb167EjrJKVOXQaY6SjxGDQZwpVJ.y7RQNdb1vfcWKZVA_0l5pLHou1eQhB3ANL9X.0ZFk2nxkDuz8jmz_OGGcEZbj9DnjxY4Vc2z.hQ0chrq1UVhXgYsTzP6I80SIQV_2ASX95fzI5C51JSXf"};var cpo = document.createElement('script');cpo.src = '/cdn-cgi/challenge-platform/h/b/orchestrate/chl_page/v1?ray=913503911b2cfe0b';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=freedoms&__cf_chl_rt_tk=VRYYSu2kbvFbZGxxQO5K4HrcgnhpgQrg5gZ7gYWPaY4-1739787302-1.0.1.1-fK23vD9pJ7wlHrP8gjx04feO7syOpIX9eszSPW1s40k" + window._cf_chl_opt.cOgUHash);cpo.onload = function() {history.replaceState(null, null, ogU);}}document.getElementsByTagName('head')[0].appendChild(cpo);}());</script></body></html>