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: '91341fb518b09d17',cH: 'A5w0P.rW4lVQwSOnrWtNGobXJx8ztYTZjHfsBT9I238-1739777969-1.2.1.1-5IqjT3xOVl.ZmTe5CZQod46nSo1nsQiU6i8ywDONbKZdYxpst7dXdekvvPcrjwin',cUPMDTk: "\/search?q=secure%20business%20transaction.&__cf_chl_tk=zbM5wGEyzDou_q61_ofrhVa51sSWp2ST.SCcbcr_fXs-1739777969-1.0.1.1-4PCNEoeBQsA5PApiK7rOniNDlKCTAWo.ZEieex_k_pg",cFPWv: 'b',cITimeS: '1739777969',cTTimeMs: '1000',cMTimeMs: '120000',cTplC: 0,cTplV: 5,cTplB: 'cf',cK: "",fa: "\/search?q=secure%20business%20transaction.&__cf_chl_f_tk=zbM5wGEyzDou_q61_ofrhVa51sSWp2ST.SCcbcr_fXs-1739777969-1.0.1.1-4PCNEoeBQsA5PApiK7rOniNDlKCTAWo.ZEieex_k_pg",md: "Pu4xDgpotnc16ZPOMuO6uTbd5EbJCojByfDm1Qe6i9w-1739777969-1.2.1.1-Pui.XsXMqDN0.txcvAL9WDGAAN4.IgA0PTPRFJbANrFkdI3MqE7Dc6.Sy28W75oWtJ5QHgcfIxtIa3HcoZg6PYKQYPGkL9MPiJ63y_E3dUoTr0NwwDoguU5.0cJbruKedEloqCFAhAFAMfiyw3qoKnm54HeIlQvmcBTBqxFZ6Ti0mukTSQPcBCvULwTIPxx.0vNxmo7aKn6GPazQMggrMXfNEgHBi5szHDrx_2W.6JrxtFUg2gHZ.98VV4UYh.VIkF8Yjm1gxyg9uP6PP7oaHLxfogYu_24haoDodQSBIsJKCpKWQ5nc8pUq9kytNjiwVRvV.qpfi0PxmnEG1MIGaiNCba8TyK573.8H.Pcn1uHQZmODYJKQqUGFmYvDm8mSLnG44tH6ozDqiTPIjICDvVqkeW3aaC85DcIfeifvh9kIbVRTeL2f3oKO1uiR9bF.XayspasEFFxP2YrOI11BxS.MD5aTbQW5omGtQ6NvP.4N.6ynqOPIsZCswY8yL5P7aIn1.RJ050htQClQcotTfHotU0attr6btT.c.Koth39vXTbTsTQNe2GYc2q7H7eumnUgLm31xb2Gjl4lzc_a6V9rdW67Ken7.fzIhuHaca_tmyBIP7mJOUSm.mMMLu1iesBTfqcVLWz6DXEd5eyCCGwFdvxvdrTS5v_XxNiFAxfxmwl38ljoWqT49o0pRlyPlR42dF9n78MT6y9nHUqNM8hnf1DpelADD_cl3jJLMG.h9iLdbNbp8rgUUHMFpC7qwAqfdujW5fXRshrHO4BuuEPJw4.yO58Q.AuBNmb.YNxjF_WVaRDcwfU3kbvOO4s2V3hD_eGso3xAEqChaw.QCXyVHZZaFsPQSPv0dIiNVGBI4JIqjgGb.57YmHQvGy3.DuX4KmXQlYay1SVKfRA1sNoM1WUIG96FX8.sytBAS3pMaq2deCe3sj6iaoQnPKdgObxk3A3EqopacsE_1Agkabxjd0n2n.AnjiOfc2ie5DVAZtalruKtyhJn9dQzAkp.HR3QVK2L0_tD.oHWS1kWHX83r57h7AJaUJZYeOJ1N9C4CLXBZyCDRtTuph5ZnBGuYaSvsYbPLJGPfceT5L.3zhY7Rx_0AN9JHCqLplscvnmV3GkEHvxhZT8B6537Aj1GbS7wfsqBwV44g1jQjVLC.H262vfXrlAoQeTfInzksrCMBIClackJesz3PswtULpa.kTQ0.nUn9hrF_Y8J4g74Qy9pPDFrW.PDUqFn1_UD7qfNh4zymRp54enfyKRxSirgh4_j_X9XHPDHahmr92Nn2df6RgrtN4OvvwokPDIDyUagoy2A4GpXebJx5ZRyrNscCj5nyRCP7I65bPRGgX8qv34El8y0QiC1o8uvMh5PgLR.aOjDoj03KktW2X2pk2DV80Ercnmrr9nDtxF1NBKiTtcHO.iHb9D9rgIpa8oLuhkXwFlaien_nnGNS0qFokWEaJZcMnaxdgUhoRVDS2URCngugNdGC0TZPqmZDvIxB8908tsQK47xh2W50lbym3HenCyfLAKaYyMziInHCfCAiyEPAuKZ7wT1G2zc7to1blqbAsc.zFRBAZ5ufF_hVBz3kdgOlGIuyLNq9gi0yRhdg7DnkPOQLsL7npNT0orBGhTzUurpiifWWyuOmDcM5qd7pyji3gQbetL3X1..x6eeSpYYUVwrKWI6qgSYO5PldoVEHsowjJMB5.yPU6TMMjNOQpQkoBah1_M4P_KLH2KZqpT1EJbli8YWUp5wBFue9zqUQGCOb6gFhngmuH_QHa19GXbd2cipJtEqhYRq_faX5WY6jGDWUank9rd_6bdOq6xa77MrAjJeqxPsI0RENZeCX1Ecr3wBiqcAzka4yx4iF370tEpU6lBOIZDLFRdpbO.L0rKjofSScvlYqzqorCil_azlWDkX.mRLKe2TUD3re8hSEjKU74VUw9SZ5v1j74hVBdqcE6jqlgbkcXrK9PW",mdrd: "4T7xpwc7catEVFCSzzmkHCZs76V7KvJbH_QzMM5vJY0-1739777969-1.2.1.1-QSF3nXvC4g7F.L1k28Dgn.fUyP3n0Oi8y4148rPpl4Yixq3BHHojHUh5jA8vm7TyHuXXMO3e3EGvQL7xIld4H0OcbuKHe5M2HbhRrOW8fs4C6fyfx5vJm_RUHGjxSnunCK7K3.6.WeSv2CQxvL61pQmhH9gI1AN3BngXF2N8HbTI41M75HCK4VqkJifE1vkYEOFOF6fPN.g4CM62fOQtAr9HkixrelMFegciZv7SFpFs26oSI3eGrgS4Avn2cgiJ9GDgHPXNL.rU2rpjBnPjkKkD45XmAuN0xfB5lSX.CJgHLkRRzSTuPXBiH05GGrrMPFS6ayFBxWVK_JVOXSp1cVt9hClkxanv0bo3WMFM6aOLcUOlBt8shMJfnAD0unAUj6GX9uOzdmG60YWDIITXHxVPOZNl68ogFTFTHQKcxGb3AAmntwxcngJ2ALYzS._.AA0eLl6to2dEmmhESzzu1i1guEg1l2J5294gjGAW3_MN0nN9K9uut6HYNH.JDgysMwDifL46KaOX_f8Zu7XLk2J8rXqQlbZAMbIxM_zrwXW8A3ocSCg5jpuCsbGrf9WfXCceNzb8Xjx7NSOASTOC095xbMqOrXezM5d55.QW6eUquVaCIcJ2.SL8YLR4mpVEx2VRvI5aPEfUqmCDOPSqsto.jQei9VvsbsVQveOMO1iDd_Rz.z231bMj7DafTfwUEQQgvkPeU10eqF4MwmpaGWF8hyDbBgFazw4lFFq_flKtPldZdMwEy9z_.Qn0q8qvf65XmnK3JYd6fpsOFgQK40GouZEXJ4ez8gzXCDlzfu7vKOs9UHlYLjTmMdPiB5zxbN9fd3WkVIipKjygb5SwxGGXZ153cSMqb44kiXHhGfa6ijLpDT1L3fulSCAnB5xrfB6llDrKbL0.4UCV9_VzxETt1qeqmVaJgATKRMX2NIOrEOUR0eQQvta23AVWnV0g_4k7SBwVKnEbjlXmSSRBfs.cVDQl_mX4lM9Y76z5AwX0GGNyUaa4UqNE8Iyu6WuyE8eZmppfQFDX2elli9pEcfkd5KenqpW2uVmN45AKmevGVeytD_S4WvKuaAi4VcYh7cChllD_Yx8QV_SRqDoOhLtE68X7BascwOPSH9Bu5CAf5FLAzH_Uy6HoUIGUBgWrt4KDJCMA_TTV1XaM7DWJUSWrQEB3JmpqLPn3JQnCanU8CdBTc5PM619GrCYPZ5QHlKnK1E83zWmT7lpE2oGgrtIYxKSHLJ9bwSggNDlDFSi.p__yOME6oo2WR98cQcx6wtzjUoXFHN4mc37NtFYXZZQd8IVbPGfD.OZM3GV_EU9aOAYA0yWwi9.NUJMk1l5tqDrsJxQ.TKNLe6Opvv73MYM6zcoLSAPfn_hl6AEinJlwGvXtm8uLqD6JhuT9oBFdQ2wqoZbgDYajD_AZZIFw.cWqO8wpxdzhrNwonudYW6FjpvU6nheJPW1abJYhVrhKw5eFMFEUa.UWeKSz2xa_4mEXxVqNjRpeICT2ChAzB.nKhBL9a3mKghlQY_cYT7NphKeazUOY9cbvJyknxu5hytKlgKtungrB2VW3l5lkh4Q9YN.CEjWgP4HWfbeQ6OuYKW92eQu46dBAbutVPZjXrIwDSqvyQgSOwbJhmwaMTIOavPjjst2vOH4hBTTjtiMNHb9Uik5mZcd_fe_USMPOmM4mDJBtr8P1K0T9t6st29pqejrtPzyEvCKU69Sn4mmeHVHsIIeGEkRCWsc1DLGNPgEJvxgt_24AbTooEvI5g7l4qYCdko1Wg3l7C7e33CmCEIDPHCsT.lOoAbgqJ_rUlXSDYsfeC.yQg2xUQ7G5_QegOBaJEycETr1ZR5V1UpnSOkyqp4B0x9qd0zR0gnJOQaijCAXhNTObs9avYQrNPt.csqORZEBP3fXik7.qwepGvxVGU7qWJrLb3zp6xY2vQGyzhoL8OhzNpLcQKWy6tNFlSMSEwYypXuaJi_Nsxq.X"};var cpo = document.createElement('script');cpo.src = '/cdn-cgi/challenge-platform/h/b/orchestrate/chl_page/v1?ray=91341fb518b09d17';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=secure%20business%20transaction.&__cf_chl_rt_tk=zbM5wGEyzDou_q61_ofrhVa51sSWp2ST.SCcbcr_fXs-1739777969-1.0.1.1-4PCNEoeBQsA5PApiK7rOniNDlKCTAWo.ZEieex_k_pg" + window._cf_chl_opt.cOgUHash);cpo.onload = function() {history.replaceState(null, null, ogU);}}document.getElementsByTagName('head')[0].appendChild(cpo);}());</script></body></html>