Sorry, you have Javascript Disabled! To see this page as it is meant to appear, please enable your Javascript!

blockquote{--wpr-bg-0512fa9e-e84e-4e55-b2b4-23f38c7839ec: url('https://en.data-alliance.net/wp-content/themes/suffusion/images/blockquote-l.png');}blockquote>div{--wpr-bg-adb4fe5e-7f0f-413c-8aea-8a9b979d3aab: url('https://en.data-alliance.net/wp-content/themes/suffusion/images/blockquote-r.png');}.float-ptr{--wpr-bg-6f058f40-09cc-451d-a4f8-a8a0c45ce485: url('https://en.data-alliance.net/wp-content/themes/suffusion/images/arrows.gif');}.down-ptr{--wpr-bg-d44f9d9c-8f78-49eb-800b-9b857c1da2f4: url('https://en.data-alliance.net/wp-content/themes/suffusion/images/arrows.gif');}.tab-box div.sbtab-content-archives ul li,.tabbed-sidebar div.sbtab-content-archives ul li,.widget_archive ul li{--wpr-bg-bbdd4ae8-12e9-4e5e-9660-35d7c0798598: url('https://en.data-alliance.net/wp-content/themes/suffusion/images/icons/calendar_date.png');}.widget-suf-follow-twitter ul li{--wpr-bg-288cce48-263a-4637-8a0f-508895533e88: url('https://en.data-alliance.net/wp-content/themes/suffusion/images/icons/comment.png');}#recent-comments ul li{--wpr-bg-4e852f8e-95e3-4be5-a1ba-ba87eaa37c1d: url('https://en.data-alliance.net/wp-content/themes/suffusion/images/icons/comments.png');}.widget-suf-cat-posts li.suf-cat-post,.suf-mag-category li.suf-mag-catblock-post{--wpr-bg-f7668e4f-942c-4d5d-bf05-329c0a76c097: url('https://en.data-alliance.net/wp-content/themes/suffusion/images/right_arrow.png');}.suf-tile-date-icon{--wpr-bg-7748ba6b-ac95-42be-a7a3-16a7dbb7a52f: url('https://en.data-alliance.net/wp-content/themes/suffusion/images/icons/byline-icons.png');}.suf-tile-date-icon{--wpr-bg-a24e11a8-0911-427e-8dad-0a6022faf38f: url('https://en.data-alliance.net/wp-content/themes/suffusion/images/icons/byline-icons.png');}.suf-tile-permalink-icon{--wpr-bg-a5021cf3-49ed-4781-8f9b-f85d7f3e8afc: url('https://en.data-alliance.net/wp-content/themes/suffusion/images/icons/byline-icons.png');}.suf-tile-permalink-icon{--wpr-bg-75194ab1-b524-4771-be93-d26aa7132b6b: url('https://en.data-alliance.net/wp-content/themes/suffusion/images/icons/byline-icons.png');}.suf-tile-postedby-icon{--wpr-bg-ad98ef83-be3a-4d8b-ab52-45269cc7163e: url('https://en.data-alliance.net/wp-content/themes/suffusion/images/icons/byline-icons.png');}.suf-tile-postedby-icon{--wpr-bg-886d89b3-f215-4664-b5a4-272d434bfee5: url('https://en.data-alliance.net/wp-content/themes/suffusion/images/icons/byline-icons.png');}.suf-tile-cats-icon{--wpr-bg-ef8f6206-df24-4dd3-afca-c210783e4ff8: url('https://en.data-alliance.net/wp-content/themes/suffusion/images/icons/byline-icons.png');}.suf-tile-cats-icon{--wpr-bg-266aa6f1-633c-4bed-af74-5502ddde5a4e: url('https://en.data-alliance.net/wp-content/themes/suffusion/images/icons/byline-icons.png');}.suf-tile-tax-icon{--wpr-bg-d713e4f4-3f38-49ec-95a1-7ba523ca97a3: url('https://en.data-alliance.net/wp-content/themes/suffusion/images/icons/byline-icons.png');}.suf-tile-tax-icon{--wpr-bg-e122c805-0ef9-4a91-a950-eaedfa7f8b73: url('https://en.data-alliance.net/wp-content/themes/suffusion/images/icons/byline-icons.png');}.suf-tile-comments-icon{--wpr-bg-d93bce6e-46c5-4fa4-84db-edfdc01a73b3: url('https://en.data-alliance.net/wp-content/themes/suffusion/images/icons/byline-icons.png');}.suf-tile-comments-icon{--wpr-bg-08afc20b-099f-4871-a16c-340c19b61b2a: url('https://en.data-alliance.net/wp-content/themes/suffusion/images/icons/byline-icons.png');}.suf-tile-edit-icon{--wpr-bg-a40e2326-4ba8-4426-a93b-d4d49eaabdc3: url('https://en.data-alliance.net/wp-content/themes/suffusion/images/icons/byline-icons.png');}.suf-tile-edit-icon{--wpr-bg-5640fbfa-4ce9-40e0-9b0b-3a7fa528c9e3: url('https://en.data-alliance.net/wp-content/themes/suffusion/images/icons/byline-icons.png');}.suf-tile-date-icon-text .icon,.suf-tile-date-icon.clicked,.suf-tile-date-icon:hover{--wpr-bg-87b2d9bb-a8dc-453e-804a-3244fec87704: url('https://en.data-alliance.net/wp-content/themes/suffusion/images/icons/byline-icons.png');}.suf-tile-date-icon-text .icon,.suf-tile-date-icon.clicked,.suf-tile-date-icon:hover{--wpr-bg-e2415c3b-a53b-4294-8875-a6e388fb0bc5: url('https://en.data-alliance.net/wp-content/themes/suffusion/images/icons/byline-icons.png');}.suf-tile-permalink-icon-text .icon,.suf-tile-permalink-icon.clicked,.suf-tile-permalink-icon:hover{--wpr-bg-1e4e825d-97b8-43bc-a8e0-16b59091ec05: url('https://en.data-alliance.net/wp-content/themes/suffusion/images/icons/byline-icons.png');}.suf-tile-permalink-icon-text .icon,.suf-tile-permalink-icon.clicked,.suf-tile-permalink-icon:hover{--wpr-bg-94e00104-5a3a-40ab-9e77-9405436a37cd: url('https://en.data-alliance.net/wp-content/themes/suffusion/images/icons/byline-icons.png');}.suf-tile-postedby-icon-text .icon,.suf-tile-postedby-icon.clicked,.suf-tile-postedby-icon:hover{--wpr-bg-1bd9f22c-10cf-42c8-b5d7-b8084839bdf8: url('https://en.data-alliance.net/wp-content/themes/suffusion/images/icons/byline-icons.png');}.suf-tile-postedby-icon-text .icon,.suf-tile-postedby-icon.clicked,.suf-tile-postedby-icon:hover{--wpr-bg-1ee95bf1-0745-4b8a-bc60-835bab1a2aa5: url('https://en.data-alliance.net/wp-content/themes/suffusion/images/icons/byline-icons.png');}.suf-tile-cats-icon-text .icon,.suf-tile-cats-icon.clicked,.suf-tile-cats-icon:hover{--wpr-bg-28360725-b315-4b59-a1d1-24f66bf386c9: url('https://en.data-alliance.net/wp-content/themes/suffusion/images/icons/byline-icons.png');}.suf-tile-cats-icon-text .icon,.suf-tile-cats-icon.clicked,.suf-tile-cats-icon:hover{--wpr-bg-119ef2f9-2dc8-4c47-879e-ecc2d2db58c6: url('https://en.data-alliance.net/wp-content/themes/suffusion/images/icons/byline-icons.png');}.suf-tile-tax-icon-text .icon,.suf-tile-tax-icon.clicked,.suf-tile-tax-icon:hover{--wpr-bg-58226812-f80a-4cc1-a80d-b529b6cb6f1a: url('https://en.data-alliance.net/wp-content/themes/suffusion/images/icons/byline-icons.png');}.suf-tile-tax-icon-text .icon,.suf-tile-tax-icon.clicked,.suf-tile-tax-icon:hover{--wpr-bg-b8e2b332-515b-4e89-8a93-b8f7a0dfb223: url('https://en.data-alliance.net/wp-content/themes/suffusion/images/icons/byline-icons.png');}.suf-tile-comments-icon-text .icon,.suf-tile-comments-icon.clicked,.suf-tile-comments-icon:hover{--wpr-bg-0d15182d-7f18-476f-9023-c20bbc65a479: url('https://en.data-alliance.net/wp-content/themes/suffusion/images/icons/byline-icons.png');}.suf-tile-comments-icon-text .icon,.suf-tile-comments-icon.clicked,.suf-tile-comments-icon:hover{--wpr-bg-6902cb33-770e-47d6-b705-4ba886ad0b25: url('https://en.data-alliance.net/wp-content/themes/suffusion/images/icons/byline-icons.png');}.suf-tile-edit-icon-text .icon,.suf-tile-edit-icon.clicked,.suf-tile-edit-icon:hover{--wpr-bg-180816b6-3850-47b5-9a63-4a55363737a0: url('https://en.data-alliance.net/wp-content/themes/suffusion/images/icons/byline-icons.png');}.suf-tile-edit-icon-text .icon,.suf-tile-edit-icon.clicked,.suf-tile-edit-icon:hover{--wpr-bg-1bb89571-c397-4584-b3c0-8424a101c357: url('https://en.data-alliance.net/wp-content/themes/suffusion/images/icons/byline-icons.png');}.suf-widget h3.scheme{--wpr-bg-69d2b210-ea53-424e-a10a-f81ba1dd0229: url('https://en.data-alliance.net/wp-content/themes/suffusion/images/menu-dark.jpg');}input[type="submit"].searchsubmit{--wpr-bg-6545b3fe-a9b5-4b14-94b0-b900df5eec1e: url('https://en.data-alliance.net/wp-content/themes/suffusion/images/search-button-rblue.png');}#ie6 #right-header-widgets .searchsubmit,#ie6 #left-header-widgets .searchsubmit,#ie6 #top-bar-right-widgets .searchsubmit,#ie6 #top-bar-left-widgets .searchsubmit,#ie6 #sidebar .searchsubmit,#ie6 #sidebar-2 .searchsubmit,#ie6 #sidebar-b .searchsubmit,#ie6 #sidebar-2-b .searchsubmit,#ie6 #horizontal-outer-widgets-1 .searchsubmit,#ie6 #horizontal-outer-widgets-2 .searchsubmit{--wpr-bg-c8f9ae9a-ca26-4425-aee6-78b96cc42b9b: url('https://en.data-alliance.net/wp-content/themes/suffusion/images/search-button-rblue.gif');}#nav-top a.current,#nav-top a.current:visited,#nav-top a.current:hover,#nav-top a.current:active,#nav-top li a:hover,#nav a.current,#nav a.current:visited,#nav a.current:hover,#nav a.current:active,#nav li a:hover{--wpr-bg-247b579c-a6d6-44cb-8ff8-69a0a8734ca2: url('https://en.data-alliance.net/wp-content/themes/suffusion/images/menu-dark.jpg');}#nav-top.continuous,#nav-top.continuous ul li,#nav-top.continuous a,#nav-top.continuous a:visited,#nav-top.continuous li li a:hover,#nav-top.continuous li li a.current,#nav-top.continuous li li a.current:visited,#nav-top.continuous li li a.current:hover,#nav-top.continuous li li a.current:active,#nav.continuous,#nav.continuous ul li,#nav.continuous a,#nav.continuous a:visited,#nav.continuous li li a:hover,#nav.continuous li li a.current,#nav.continuous li li a.current:visited,#nav.continuous li li a.current:hover,#nav.continuous li li a.current:active{--wpr-bg-148eee45-ac93-47e6-ab8d-ab73d1c52987: url('https://en.data-alliance.net/wp-content/themes/suffusion/images/menu-dark.jpg');}#top-bar-right-spanel-tab .toggle a{--wpr-bg-bfc48836-bf5f-4753-a6c0-832f3f7c254d: url('https://en.data-alliance.net/wp-content/themes/suffusion/images/menu-dark.jpg');}.post .date{--wpr-bg-9a3a2aef-8824-499b-a79f-bc14dbbeb4de: url('https://en.data-alliance.net/wp-content/themes/suffusion/images/caldark.png');}.button,.button:visited,input[type="submit"],input[type="button"]{--wpr-bg-f5c0183d-27f3-4641-87cb-dbd3961d790e: url('https://en.data-alliance.net/wp-content/themes/suffusion/images/menu-dark.jpg');}#commentform label.fancy{--wpr-bg-c3fd40e8-f6f2-4e75-aab7-f4c47fd42801: url('https://en.data-alliance.net/wp-content/themes/suffusion/images/menu-dark.jpg');}.pager-bullets #sliderPager a,.pager-bullets .sliderPager a{--wpr-bg-352b01fc-4a69-4a27-99ef-f26bee5f3f62: url('https://en.data-alliance.net/wp-content/themes/suffusion/images/slider-gray.png');}.pager-bullets #sliderPager a.activeSlide,.pager-bullets .sliderPager a.activeSlide,.pager-bullets #sliderPager a:hover,.pager-bullets .sliderPager a:hover{--wpr-bg-21220651-be70-4447-af75-77726ad8c341: url('https://en.data-alliance.net/wp-content/themes/suffusion/images/slider-blue.png');}.warea ul.sidebar-tabs li a.tab-current,ul.sidebar-tabs li a.tab-current{--wpr-bg-e550f045-4917-49b7-a4e5-725f5061f218: url('https://en.data-alliance.net/wp-content/themes/suffusion/images/menu-dark.jpg');}.suf-mag-headline-block li.suf-mag-headline a.tab-current,h2.suf-mag-category-title,a.excerpt-more-append,a.excerpt-more-append:visited,a.suf-mag-excerpt-full-story,a.suf-mag-excerpt-full-story:visited,.warea a.suf-mag-category-all-posts,.warea a.suf-mag-category-all-posts:visited,a.suf-mag-category-all-posts,a.suf-mag-category-all-posts:visited{--wpr-bg-c5b8fe04-2f97-45fa-851b-e8d7bd3a2c69: url('https://en.data-alliance.net/wp-content/themes/suffusion/images/menu-dark.jpg');}.exif-button{--wpr-bg-1c8db8e1-2234-4733-b651-64dd8966bbc1: url('https://en.data-alliance.net/wp-content/themes/suffusion/images/menu-dark.jpg');}#nav .mm-warea .mm-widget ul li,#nav-top .mm-warea .mm-widget ul li{--wpr-bg-b974565f-1c46-4a4b-b2c9-a908a3437dc4: url('https://en.data-alliance.net/wp-content/themes/suffusion/images/icons/bulletrbl.png');}a.dbx-toggle,a.dbx-toggle:visited{--wpr-bg-ebf8df4f-853f-453a-b160-a203ac485dfe: url('https://en.data-alliance.net/wp-content/themes/suffusion/images/exp-coll-rblue.png');}#ie6 a.dbx-toggle,#ie6 a.dbx-toggle:visited{--wpr-bg-0f49924f-5acd-4e79-b64d-37cf10689f09: url('https://en.data-alliance.net/wp-content/themes/suffusion/images/exp-coll-rblue.gif');}.scheme a.dbx-toggle,.scheme a.dbx-toggle:visited{--wpr-bg-2aa0b1d7-e10a-44b3-9428-46c966e11732: url('https://en.data-alliance.net/wp-content/themes/suffusion/images/exp-coll-white.png');}#ie6 .scheme a.dbx-toggle,#ie6 .scheme a.dbx-toggle:visited{--wpr-bg-63b099e3-5d47-49d1-bce8-19c6c7349b37: url('https://en.data-alliance.net/wp-content/themes/suffusion/images/exp-coll-white.gif');}.suf-mag-category li,.sidebar-tab-content ul li,.suf-widget li,.suf-flat-widget li,.suf-panel-widget li{--wpr-bg-de4165ee-8478-490c-a628-1ee602eb1056: url('https://en.data-alliance.net/wp-content/themes/suffusion/images/icons/bulletrbl.png');}.tab-box div.sbtab-content-categories ul li,.widget_categories ul li{--wpr-bg-71f41a16-0a51-4d7e-99d0-1f36cd5dc61c: url('https://en.data-alliance.net/wp-content/themes/suffusion/images/icons/folderbl16.png');}div.sbtab-content-meta .rss,.suf-widget .rss,.suf-flat-widget .rss,.suf-panel-widget .rss,.widget_meta .rss{--wpr-bg-768b6eda-218a-4191-9b05-128d36ef47f7: url('https://en.data-alliance.net/wp-content/themes/suffusion/images/icons/rssrblue16.png');}.image .icon{--wpr-bg-4994c05c-f9b6-4380-acaa-2255901bdd33: url('https://en.data-alliance.net/wp-content/themes/suffusion/images/attachment.png');}.audio .icon{--wpr-bg-e69bb54c-fbc0-4c08-a523-8aee1bbc1116: url('https://en.data-alliance.net/wp-content/themes/suffusion/images/attachment.png');}.video .icon{--wpr-bg-5113241b-7b0e-40e0-8fcb-8eb4e37b41cf: url('https://en.data-alliance.net/wp-content/themes/suffusion/images/attachment.png');}.text .icon{--wpr-bg-f9536220-1511-4566-9d2b-f8f2311f6a84: url('https://en.data-alliance.net/wp-content/themes/suffusion/images/attachment.png');}.application .icon{--wpr-bg-091efe42-f710-4d7c-9e11-8548c0b7004c: url('https://en.data-alliance.net/wp-content/themes/suffusion/images/attachment.png');}.quicktime .icon{--wpr-bg-b91dce00-7926-4fea-b603-fc3b91bd8ac0: url('https://en.data-alliance.net/wp-content/themes/suffusion/images/attachment.png');}.x-flv .icon,.x-shockwave-flash .icon{--wpr-bg-93ed904a-4487-483c-a887-feae4bb4b45d: url('https://en.data-alliance.net/wp-content/themes/suffusion/images/attachment.png');}.css .icon{--wpr-bg-1019afeb-6353-496e-8646-38891db26054: url('https://en.data-alliance.net/wp-content/themes/suffusion/images/attachment.png');}.html .icon{--wpr-bg-cad867ab-f5e0-4618-916c-86004b514eef: url('https://en.data-alliance.net/wp-content/themes/suffusion/images/attachment.png');}.x-realaudio .icon{--wpr-bg-a5bb6b4b-ee2f-4c11-8e78-c849c94d9486: url('https://en.data-alliance.net/wp-content/themes/suffusion/images/attachment.png');}.rtf .icon{--wpr-bg-9c9a7f44-0617-4efc-96f2-e902fc88e868: url('https://en.data-alliance.net/wp-content/themes/suffusion/images/attachment.png');}.javascript .icon{--wpr-bg-4aeb63cf-f966-4e63-b129-8405b519c58d: url('https://en.data-alliance.net/wp-content/themes/suffusion/images/attachment.png');}.pdf .icon{--wpr-bg-e5edccf8-b5bf-401e-ae0d-a8611936e0ee: url('https://en.data-alliance.net/wp-content/themes/suffusion/images/attachment.png');}.msword .icon,.vnd-ms-write .icon,.vnd-ms-word .icon,.vnd-openxmlformats-officedocument-wordprocessingml .icon,.vnd-oasis-opendocument-text .icon,.wordperfect .icon{--wpr-bg-0031accb-0729-4c68-b6f9-796fc7ab51d3: url('https://en.data-alliance.net/wp-content/themes/suffusion/images/attachment.png');}.vnd-ms-powerpoint .icon,.vnd-openxmlformats-officedocument-presentationml .icon,.vnd-oasis-opendocument-presentation .icon{--wpr-bg-b3be65b6-bd74-4b93-bc23-8e7eae72e465: url('https://en.data-alliance.net/wp-content/themes/suffusion/images/attachment.png');}.vnd-ms-excel .icon,.vnd-openxmlformats-officedocument-spreadsheetml .icon,.vnd-oasis-opendocument-spreadsheet .icon,.vnd-oasis-opendocument-chart .icon{--wpr-bg-13c4dda7-0ed3-4892-9975-935000f5a812: url('https://en.data-alliance.net/wp-content/themes/suffusion/images/attachment.png');}.vnd-ms-access .icon,.vnd-oasis-opendocument-database .icon{--wpr-bg-2609455c-1ba8-4161-8b84-d1b2f312b323: url('https://en.data-alliance.net/wp-content/themes/suffusion/images/attachment.png');}.x-tar .icon,.zip .icon,.x-gzip .icon{--wpr-bg-d3f6bb4d-af44-495c-965b-def9d45d0548: url('https://en.data-alliance.net/wp-content/themes/suffusion/images/attachment.png');}.onenote .icon{--wpr-bg-86e682c1-dffc-469e-b22d-7cb0c00a525c: url('https://en.data-alliance.net/wp-content/themes/suffusion/images/attachment.png');}.x-msdownload .icon{--wpr-bg-d2ff15ce-479e-4c20-bc9a-86338c1899e9: url('https://en.data-alliance.net/wp-content/themes/suffusion/images/attachment.png');}.vnd-oasis-opendocument-graphics .icon{--wpr-bg-76249fc3-6ab6-4dfb-9ab7-201f9242b401: url('https://en.data-alliance.net/wp-content/themes/suffusion/images/attachment.png');}.vnd-oasis-opendocument-formula .icon{--wpr-bg-a8e1148d-3df9-4386-9514-8609def354ae: url('https://en.data-alliance.net/wp-content/themes/suffusion/images/attachment.png');}.x-vcard .icon{--wpr-bg-8eae3e53-7b25-47de-8d70-2386b3dded67: url('https://en.data-alliance.net/wp-content/themes/suffusion/images/attachment.png');}.postdata .category .icon,.postdata .author .icon,.postdata .tax .icon,.postdata .permalink .icon,.postdata .comments .icon,.postdata .edit .icon,.postdata .line-date .icon,.previous-entries .icon,.next-entries .icon,.post-nav .previous .icon,.post-nav .next .icon,h3.comments .icon,#reply-title .icon,input.inside,.exif-button .icon,.bookdata .edit .icon,.bookdata .manage .icon,.page-nav-left a,.page-nav-right a,.mosaic-page-nav-right a,.mosaic-page-nav-left a,.mosaic-overlay a span,.meta-pullout .category .icon,.meta-pullout .author .icon,.meta-pullout .tax .icon,.meta-pullout .permalink .icon,.meta-pullout .comments .icon,.meta-pullout .edit .icon,.meta-pullout .pullout-date .icon,.controller-icons #sliderControl .sliderPrev,.controller-icons #sliderControl .sliderNext,.controller-icons .sliderControl .sliderPrev,.controller-icons .sliderControl .sliderNext,.user-profiles .icon{--wpr-bg-91aaa137-c78d-4406-a104-8cb98aca7bc2: url('https://en.data-alliance.net/wp-content/themes/suffusion/images/iconset-2.png');}

Privacy & Security: Policies & transaction security measures in place on this website.