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: "www.tandfonline.com",cType: 'managed',cRay: '90ae148d8a4789b8',cH: 'G3MQWtlrwCEi2uSU2M1ZOoZXectuhI2gRRk7Og38FE4-1738372420-1.2.1.1-On91hDrRnJAL6dZ5WKJyCaAOg_acb4IiWobMpGX4HTm1xqs8WR4n.HE4.YBx8w2U',cUPMDTk: "\/toc\/hsem20\/current?__cf_chl_tk=M7DBN2DnjCYNJO4pgatvglMS6KyT3oUNEmfV_9nYDIY-1738372420-1.0.1.1-BT.7wyE04wBb2ctx30caSqRRnjQV0zb5nlEhU9Ffcrw",cFPWv: 'b',cITimeS: '1738372420',cTTimeMs: '1000',cMTimeMs: '390000',cTplC: 0,cTplV: 5,cTplB: 'cf',cK: "",fa: "\/toc\/hsem20\/current?__cf_chl_f_tk=M7DBN2DnjCYNJO4pgatvglMS6KyT3oUNEmfV_9nYDIY-1738372420-1.0.1.1-BT.7wyE04wBb2ctx30caSqRRnjQV0zb5nlEhU9Ffcrw",md: ".NuC5YvbYTR4Hpihwa2wXXIxUtq7S1vF3Ofuj07J3Jo-1738372420-1.2.1.1-H3qXbIsnxVVeOgmFZiaMGXrUg7IaK.W8pYkxI8ulJL6v064e2xBlFynPns1FT5V.kml1sbTRfUNcxIB5xEyyr_lmd1eff9MtNptspOlj92ouGaHGIdrrGCwePHluZp99vuh31yU9uKyGglBSYLCdLNJHoDJpzb8gTO7t8XKLzHJdv80naVhTqkpA5iS0bX._a.eGuiKel58MERn.njx54SsmV_gXhgz1IqSONGXsgWgHjAmUXNH88qp2VBiN2w.qNkd3.7MsjkGeO9MTq7w7k6Axk8dgzP7IO6rRA6owLUJrQG1haz2ozjpxQ_TDdguMHn1Z4WaFzehz5v6jpo64mcp6Cp4rZKGzS2eEqOv.FUezSHpZPoU4hQ4y4cyG.2336StX.PLbgGj7bKKj1O628cBBQ5rEZFGoZvvaWqxuaXEnOyNzfIA7aDwOlMX08D8Xy9I7NzoLY6ydfpJlk_GGhzKQOahXJQ4i5r00m7WGCLQsqLXzEdTgKJMOguvtwwSGmQCK1fbJ1A6UP7M4L8NdecDj2mT.3sgMzEHFQZavmvAda.e2NHzQKHH1lv5IkV_6h0QH0jDXWbx4vQhQsze8EgH5DueYf_zRtWTV4DLeX6_ZAw8B1hSgE_dWT8Hb_cIal_Hiu4wKthmu2NcKpLl4pGHfAvt6nV1otqozUv9TNIdS24o7oWsgOMH_pxjV_lqyjGnlvhGE1i7WgIrNT_tUN0LKtMh5fNWoU0U6CmJChxGzeeY8tpH5s9S17CaLnsc9aOF09H8IIWt1LtNb5tmDYmq.pNukrHSrKEv1ULSvmtatr52z9C0BQUaSAcnMlhZBy2V1HbGegsM9o6SqTyp.RH7vaUE_W9.d3fpjoZUi.XcXEM6u6QeTD1ckT9EdCoh0vUKwL3ZFNmyL6MEh60leN_ELu5kUGT01Y2muGukEUGZbYoWDSzf92r5pB8byK7CtPKXOYMZMbaZfruNobYRGrJvFtf7zaYZ8MeN1mLAPq8q2eyk8sPSqv4osYTqRX4cInGZ.P3gEBW7VoyCdSEMmnrPj1LCIOa1L3DRTofrsZ24zS0DcMqDrIDBMgXhVuP0GS37rZmqw0lhvG_glzmG_rxQiLm_mAuqlre8So9qSfIMdKZ3zEnH5RKB8t1TSUNs7UgQ1F99KFJZDcqtnQvNgJheCu3kjbkHjBZvpJHOiBoPBv6ADhnhQ8auTNKZptfPRKWagy0ZnqE3tJmt05MYxNZqueqh_x8Yd0.MMhkdf.dViXU8D5peXc30phY.HoItY_LwNm2.kjH6uB12T.6Q15m1VLJmtnG3mbfNuGs6EZC8D5KnIcuU6QIiiiSdtbehblkVabXQPgIcCBuYRmqmSRdo1gTm96I3uF1ZBbwpVTSF8Yy2kFFdXPUwjnS8lmhyCDjf_H2HjYhQKYUW9RxtcWo5D9Ka1jGOgAJZniZrLyfXIXZstRu6au0hdXL.89yFKvCfpqjHoyivo6aj3bPX4bJGg.eIEDmhGvs5Ij_7iQ6JYC669LfSBky7zK7BPKFOkrgXD.lIqDiLYKjLaukJdXr2N2..f76.NwjZ6Ig14g3dvs_lYJi2IDvSn.zArQcyEuGSiGplx0luGXfy1J9STFrb5IwLrQBLs9qJsqnEATZkUKKIwOTCc8L1mM8faSjoSq5rCDl9CJEX3MKsbSh66CF9SZGJTY9CCmbZ9EvaocDEUC6svDCk.YzaunpsPxJm1WSgNfNh3e3BVlrUUZ0NMoa5NV.uCS6Hcl0gzIMgqh_N6zoMzYZKCcQC5rK8aRKctDrLzomZQ_4V60zJfUUBdjQO.AZG6kaffeH4Fo400FI6vk3PtOoGn8KvXAwiuNe6NPiXFA_PQA2uRWvCYxwVFfK1hjdtzHOI_iUxnzgcMJqwTPDZqhmTjdn3wpuyVzhDq8njo4tQnS7jfltTdtkN49zEvzoV.TBdSlfFSHrNKkSBtwRXVdXAWFcLFOMfJmLjhD5dV2bAeVonzUOZqq4n.mIRCuz0QSVqNsSk3pCakTlx0Y_0RAojh.vERiyIO5BnwwH_3lM9XiqrH0hOWvZnv3wmwrijil8LGTMvWQV7hAylQboHWYL2WZH1CIzQKZIahDLmKmeNYPICFLTWqX7TO3kAt7iLS5wHmJa1ivKu_Ol3VouVeH3KTTLF2avH2j9wd0hWgZcs9a5irDGwVQD0CYK3H0oLxD5FW2OgEArJcN1tw2sWbvTmoErs3bWACd3yP85CDKWQEc15Z04_Dd60DpB0hGQcnp3d1jZtF62.6_FRRgE28_5nU1p7lyfuhaCPQbGpKeWJsFrMFnUwue1Habdw0Z9eUgy.dWiD0IRO9Jz2Zu1MkfLd.wNtcuDcCsku4spFeawAsCG1Upif6CJtFbZrVpTCuaK0urLGr14BYJO.arh5.QkGD8YUN.aNcqzZNmBwf3K6Cyq0_B5uh8PXUYiQAEhza0YpgH7f7U.0Kv9Zbjn8EL1B1AiNnfZc6ozCfgDsRCvSfJplGWYaxRriBV1kJS6NY8DrtBm9U10o7f.hgjc4FuKPRXBykuvbmAnn6",mdrd: "swsqaAeX5NSj_JTHR0ukU0wRf478goUPVgrpXkZX1Z0-1738372420-1.2.1.1-7pBWxYITOHC_YuE9KoFs2VV0zW.Sb17Da9hlX9qKMX2Qt50tx76vP1pGuLTTnUEl9HmWl0MvT_1KN_lPSDppOt_FLhv.bbJly6uqzr48c8DU1KNylrXMng06nlHC7HWc9w.uM1CD_7tngrre2j5OajjRg3jfOaJ5A8xx2rJfo0NIQ2l6ukvvZJl44KgJXN1_UEJ6EBe0CxJb82AA3Db_xPOB35mQl4uwltUkV30v55san2P0fQlNpAZnDvjpESo.Giz4V95rxrifAhxE0u.UbPQY.OmnZ7dG7gn3VNRcp8JxS0vXq6Djgcn.oOI11kAl12XJfFX1DmnP0v2LqzYYZ2El6MBFnIqOsGGzK2LP4m8Pb3O4FfnX93..nlPgUq6SpVZdd91B2rpGCDFne5yFd8RO.SITqIye5v6zTN7qqaowIrRUCbppI3pzahrPWpn4TpTktsifY3DRLFKdbQPeX5j67koQ0ymQwY4kwLiJUJxPCVmAYEDKFAgyYLx3KGSP31f9QavwBDY5Y_bWJjMiJSxhlL8KOxBeTBxy0xxuujmphEu2_NjR_2EcieBNPkGRw6AefZlyorzcc.jpUk_7WmWtQEhER_Pium2D_Jjv62Lrv3ZZf3P6gDaj2UKO1W9YhyvSBXHJqELRJWNteji_yOaNv7gV4HA2.SNoy7o15itwhHbEA.c.ipUUzY224unMXJ0ORJnotH5ks1k2pf_Hp3ECF6aJcaPoD6qarHJiHl6GG9CLiwgIEUmiJ483Uw0w7U71GY.ZFeIhzTbty1z16QKoFX5.kERMwZA78Ug54fDOAmWHF3gmTj8fiUREDHacJcNxvWdEetzlHGL.XBt7xHODYTst92Cul1uS8rzCSxLaFoBTXWOcE3202tMKqVxX2FumZ2jvf.SVzZM7DNDUZBpJzvADTi0PPhkPsjLKrYMA6yn4C39JT5KMNjGyCePjHg4TsFOPEMYEif5lTP59Yb7QPy9XRegiP5zQMsTJ5r.gLC1HeT98vpYYNGHRUP.HnnTUQU6xTeeKuQ2vMJguwrAIzWlqSvhBHp_TpjQlWI0RNc5dDJQP55QID6EiKGNMVOyUKP22VS3Yeju0jAN6BI3IoQAfL_gZ0SPiQUqrthBRsEo4NuMIQJmdXzOzSb2hylk71nN7niE0tsD9xFllg1SebwvuoQNdD0ogM0rsSN1ugvV0AnuT6q_o5LI0BS_Ehxlr5dx.GVD3zd3cPiURRgNppyyAYZnbhIX9NpqVfehYPboTkzV88maUgqwIrMFG0S0mgSr5sDTOAo.lgw5MlFBPRoKui7fMyvWgBVXHZT8C8KRf0IieabMRCiLxeFp0o0NBb7Ykh8M1ylo0sHjuioxoj3OWRvaT2jVGj_naeFJvKAjrQYBJghOZss4IU5EPUQ2TUQ.2juzMP9ggzCYjWQ89mB99on.WZpgCfQmFhHLMATWvoTl6cCDMsZTczhsSST89ldL6HE9FAOitxhKi7QPFQk3R7QhizeAYbBvR6FoRU0SMFDnoFURu35o1S2vSlBAEZDxfUvG97fc6x4hHOIUQgrkjCFncYl3uGAUV9bfhOO15Rf1VeCWPqJDJmsSQqlmMLVxdH.61YB6pisD21ZdgpLFOVx3sqyu8x5FPWXo4oXNdWiQs5BK0beeRlEB6UuF8YCpd3OUfpEMQuQWQ6GCW7vhSWWFiHfEUuz0RrB36b6XLmfdXB4rdpKDEApuKb7W5JsZ4Uy1p8iZaGpgt7dUFHxyUPZl1EPOE8qEwZ0Nvp7BjuUrWRRsvqHsnhjwpXx.7wUhD_DNXinch9Ugnqv42KDBIJ5Q2WdkUw1em92I4gfB4Pn7bK.PPspP.0g.d7Si7wzlh2iI5O2TH8QJuJOOPNhBpaVFyaSRNPdPWC7mVO_B3s78ZcyEHml1yUsrc_YMd8TlnO4XPrZx1YdTo8Az7Tng5ILqvFzmMGx037MIR7yKMA1dEp_3zSdehNvo4"};var cpo = document.createElement('script');cpo.src = '/cdn-cgi/challenge-platform/h/b/orchestrate/chl_page/v1?ray=90ae148d8a4789b8';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, "\/toc\/hsem20\/current?__cf_chl_rt_tk=M7DBN2DnjCYNJO4pgatvglMS6KyT3oUNEmfV_9nYDIY-1738372420-1.0.1.1-BT.7wyE04wBb2ctx30caSqRRnjQV0zb5nlEhU9Ffcrw" + window._cf_chl_opt.cOgUHash);cpo.onload = function() {history.replaceState(null, null, ogU);}}document.getElementsByTagName('head')[0].appendChild(cpo);}());</script></body></html>