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: '9134b04f4d8581aa',cH: 'zFSrmhIsMFjIsAKBgonGAVaiVfv54PLKrHGVI_mZ1P0-1739783892-1.2.1.1-9W2RUFgrsqXKMRVwA9oeKEGi9t03K1r154ghtK__3B5AHvEoy9lybsAkfFK3XM6o',cUPMDTk: "\/search?q=Xin%20Wang&__cf_chl_tk=UWfaGR7ael.9Ap_cHekO6hrAZtNA59QQH0tyBJb144A-1739783892-1.0.1.1-MUzEyIqfOyWg5ROH2AMkd.ISfyK3qRRNlYaX1YeJRks",cFPWv: 'b',cITimeS: '1739783892',cTTimeMs: '1000',cMTimeMs: '120000',cTplC: 0,cTplV: 5,cTplB: 'cf',cK: "",fa: "\/search?q=Xin%20Wang&__cf_chl_f_tk=UWfaGR7ael.9Ap_cHekO6hrAZtNA59QQH0tyBJb144A-1739783892-1.0.1.1-MUzEyIqfOyWg5ROH2AMkd.ISfyK3qRRNlYaX1YeJRks",md: "ImirwyhWHaDTuVC1bjXhlHzSOFE3G8cIT1Z8J9Bn6fk-1739783892-1.2.1.1-bOekY.T6aJ63HMky3g9xq1S99EoLFlyp46yHlJZrUkruID1kvsF5VFzxnrNU70Dqcn3txu234o6fWL81A7jOV3Youqob6GdT6UCPsQBQbFIVwQy5aPkdNc6PUfaSx6H2hwIEo.UdlkxS143E9M2Bh9_16cvstsP4gfYQxGzqxfrVYKyIa2MCruynNZWaP9COOiTGPmYRdYbi28vfv0xeWOGRKJUVy0l0tE4FsYy0OtNI.KEyHksnnIosIPzC2vGjXMaHFl8kz32QHSkPnU4m3sdKpwYKGZwsMhkh6HuuitbgmDtgjiGqglR9ts8O.8w7brnVvct6cV4Y3S1IQxd9R2qaHTS1PcJRRx8.nmc5heD3FwUHFo7OZTa0Oc_OjLyeM6NQWuCEOE5qyR7OVXY8g4L1OQm7urXVjl39rBMFHc8DIjPVd23IdzWp3vXrrdaX3XhehTzujDGE13n8HSjzan_KjV7kxnMTEcgtnIxTBOPxlEZcx9rl2QpcLZ9YJoULg3N2oU4eBm1OWmxMom9suDwS5PoYR2iTQfxzPN2ktLu4IGczc3JGKPnn8JteEKkNi.ZLAtNcKjAyzt43swvtvSHHQiLUpYHeq4N_Finv4lZNyigStdejasvufs84RqnltImAhrl51zK.iKeIAPs5ZMeebR8OgXmiINPuztQBZyJHT98V4RqqE47UohdaRUEiQNzQYbpaPcxLzIqj4doDVkruy.t_m7i723fvXiTyJFd8v5uLNozQqnMkT1p8ypls8CJOBslc3U.gyNqFrWn_wx1LKDYdh5vnwfDkKy0sg_mRZjAVrFbV7taM0hdx2Iq8TbGCDUVpUgnlj.ySqhTNwOiTpPrVOW3yWxBmx.aJTgub6QcCphQmDz9zM_Dsv6XPXw6OLcODUBA2HFWIY1amF5a2CS9aqy2z4k5VRjOAdzdGVZavq5lBeRypH3X0PXfbMM8zXiEVq5xm9E7XRgiblHerBTc4X610R85fJMEWaLPYijCLeED.FXLHw9964CDU.M4QNMe41zn7tCZqyJTfrbyGV_dk8E7qkI.iC20Cp2tnqGw3gNPG.WQ6HYzjMDZgeKwxc8yrYzkneyXqQ.f1Kiu2H4WVSmDB4HjdIYWWaDSDmK.dv38hj8H0vjk8lX4GhMKA3OXhS.UCoanxPcvPwxp8yrdLd7T0YfJW2Fc3kjG6Olc7kgSsWjwW3Kd_1W1Ikr6RLd6LIDkKfkAFEC9.UD3U2ixXzvCmLBEjSCAXN10ELD5PDD5Zm983jvxmHdQZX1_Ewf6iKbyviyKpDsDtWC1.abQuKMc.Nf3nMZjU1K1rN_HXvnmQ9n8ktGjrQ2v_DtUL9T.ZP4dkOkpR0WPnPC6E7e72MF6utf6ZWJSJLd6ztHydnuJNWvUs9hpofS.yfhVlLo9vh4io6PS6QcupPrKjlPl0Wd57xcB1fy8OrioOypPgSqM0cpx5ZVKmBuL8jicIp9SMrLQGRG8j7ZPT6HpiCLkKVnXe5g49cqylVRkfXgqHYs65du2lMgZEgKngLFpMQCy_LF50jSSACg4FVkpSDZzMNynlkL46jV5_8QBWbn5gcEjlZzm35dqbQ35T_u2mONWuETJUo8.ZY.0TX6V6dX73j2Cydzb2CqaNl39UlKVnoAHvUXa537gX5.dTO03GYGqq4GNAH5TC2egktSPcMDTJy9W5h3N1H5rCLr.QnfQzbvr5YvXlJGrfJBIXj9enqvnu7hXF6P4Bn3yT0S17pf.m7yE32D5S9inW6HsKv6FbnJU4DCEm_l3w0qzIyMRkxRdrp9hkz6NmIChHKA5EfFYQMIw8t39EJUizweopO41FyiF.HUI7p0Sg8mcX2hE8uoCo22tl14EJchwv5E0WpBU4KYJf_KT_OK6gTYXFWYps0GmZK3dOtUFOArk.",mdrd: "JAwzSNn957ba2pucHOXzC42M1k0hwSnTIvUn3hVJzRc-1739783892-1.2.1.1-NV6rB19P.nxA5F8oUfTzNbkVqCxMTem7F2DjeNnuOzuTTuNZkFIFw_8Uo6BliOQG7hgwq01qZVK90xxWm53l0TXeTcH_8u6NxfFytJd87h1nyz9i66GWEnXOnNadKdh_mC9hDdcEgM1TS1Po5_7zeWZEQKP3ygNBvwXy5Q2qbfJ_bIgX46mIx_cqu6YzSeM4FBJWQQBc1aFXYHV8CcYzn03Qh3gPBDp4LZDXsFg22F1GNQVd98btJLmf6qTeIX451c_fXbK61_Y7HxfcgFZ_xu4i6JJJf2IiFL5Jb_ZkJS7zK8Czc00MqX7ZQaTnp1Uhr0Xzy5vjtcFCJviz66WoJ86QBFDGz6PtjQd2WRvKbG9CiGC9dIBQ.AdC20DYH832c4vlUVfnsN4CUkXfK4_J5zA5lM4ibARSJtUFfq1Tj.9Jawj7FpWKn4kGwZ1ynyjZZoz6ogUCmONFvrLY1fUSWSscwjUbELhT_4GNf2wWQvLZcf.o7t969PIJuH2P4xHGs0V02X3_PW0Wta6EcFEl8PSoidHKvNYi3UMrMzF9e7ZOPKNEhoLoSRldxi4gezhvsQdSeXZhqDU.FDcX3vBMiz1EwO07ACvt1J27DG.mYTJFNxGVVPa4hEpF11utkeftOF_8D5CO_bTmDOvhbCPj3efuU2WQliwW7sQ2HlCCOXQZHB6zBlZsUObAwzhQWAdjJjLsnMRsuhkBEK_kOgYfJdQr8YwbjliLl0PPyJsbTrXrQTRG6rbvQp0MjPrMs7QyHG64foRcpzpSncQPjEApCdj4QTYAFIGTXtyg5sdtSlfu9eV7WJY9FmgCkyCeKM.F44EM5OL64jDk4oa8i3yiwnMcH25ru.mgi7eoQl0vixB3RDji8xlmziiNm7nWn.P3mQf1vmIUk1DdiPKQNOQpQ2wLMhHekrbd8l9IqjKjF7zcBcLPSNcZq_oyXALl2IPVM7jCFk_kat51si.CLWISGNS4q1ob4TCTIucAUx0ulyAOqha_hI7UKWhjFdLKffvm2OfQJ4VIRP1Tg9XxUnaJ03jqABMqmAfDJm6d9.aopwXqeGUfbfLfhUjSM2gZPB8TFn7ZEPcy_9iJQRPcU3zynGeW_.8uDfq2DnHwtFfsliDvA4U2f1qnyeWao47X8Tdjdl78t3T78LF0KbnDDdnA8CnWd1QxkG1Z0yhGr72OANWVUWbKRWTzaCG3o7zDzt.ID1Kl2keoXED5EQYcYbq15R3S77hvNfycGm1od2xg0FeyK.NLEVf.Ejcn0wFv9PWti3UwGJxNY15pXrHDz80CQ.1_NO2eizoh77TB56bQoJYP3lDYwBJ5G7h8TuGMXHtx7NESQyE3Ap_ZomYPv4xPAB2GvuQEBne4epe3a2PY_Uaq0Mh9OTX5UvALlZ1ZixLZJeSYNhuDlpF1n52WuObHl5iJiaUmlgOkXisOha6XWDtTzV5sZm8DI67ENomhjeV2PNNHjk_jqGTSwQG3IJXBCkFaXN4L2cjb6iG4jyTD7vN9Z2JOxlllno8TK5MII4J6nalp1Ejw1NM5vzzFKSPOuSNwxiJWF3W79I4dsNZVCjzVo.PbWcpVGDxp2ee.8vh7fR5evpmal01EcvGDmXxuYofYONTwq5ieOoR.dayNoMaNa7b00yhl31Ppdh.g.i.8jfVxdhTDRIIMoqDkHH8DOt_yf.BdZJxPQvhtmbDwoV.Qmf9AcMDeOveVvz_p5kskBydRCd4CG2nw1j82nUID4sDKqM3MaSCCba_QNFdzBeMN0fxdA5lbcKUtn7Sfv7VYhsNCC0uqWkePF_x6vO63_iK_fGDVm153q4vYOOWzGt.VljZDYJ1rKRxQrAON4dcESkXiRCuxOv7oP3YsBWDztclk89EuZ199ACBFEMDBLJbX71OfSJetOFeJk63IPCiNa7_IyUrkj.BmqBu0NQr1UM4SACvope3qiepeLwEeyPE"};var cpo = document.createElement('script');cpo.src = '/cdn-cgi/challenge-platform/h/b/orchestrate/chl_page/v1?ray=9134b04f4d8581aa';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=Xin%20Wang&__cf_chl_rt_tk=UWfaGR7ael.9Ap_cHekO6hrAZtNA59QQH0tyBJb144A-1739783892-1.0.1.1-MUzEyIqfOyWg5ROH2AMkd.ISfyK3qRRNlYaX1YeJRks" + window._cf_chl_opt.cOgUHash);cpo.onload = function() {history.replaceState(null, null, ogU);}}document.getElementsByTagName('head')[0].appendChild(cpo);}());</script></body></html>