It looks like this is a web page, not a feed. I looked for a feed associated with this page, but couldn't find one. Please enter the address of your feed to validate.

Source: https://blog-099173123762.mit-edu.top/post/4803197265

  1. <!doctype html>
  2. <html xmlns="http://www.w3.org/1999/xhtml" xml:lang="en" lang="en" prefix="og: http://ogp.me/ns#">
  3.  
  4.  <head>
  5.    <meta charset="utf-8">
  6.    <meta name="applicable-device" content="pc,mobile">
  7.    <meta name="viewport" content="width=device-width, initial-scale=1">
  8.    <title>Context-Aware AR Games for Promoting Sustainable Urban Living #739670489321 (2025-02-05)</title>
  9.    <link rel="canonical" href="https://blog-099173123762.mit-edu.top/post/4803197265">
  10.    <link rel="stylesheet" href="https://fonts.googleapis.com/css2?family=Poppins:wght@400;700&display=swap">
  11.    <link rel="stylesheet" href="https://x.mit-edu.top/static/css/style.css">
  12.    <script src="https://x.mit-edu.top/static/js/lazysizes.min.js" async></script>
  13.    <link rel="shortcut icon" href="/favicon.ico">
  14.    <!-- Open Graph Metadata -->
  15.    <meta property="og:type" content="article" />
  16.    <meta property="og:title" content="Context-Aware AR Games for Promoting Sustainable Urban Living" />
  17.    <meta property="og:description" content="Context-Aware AR Games for Promoting Sustainable Urban Living #739670489321 (2025-02-05)" />
  18.    <meta property="og:url" content="https://blog-099173123762.mit-edu.top/post/4803197265" />
  19.    <meta property="og:site_name" content="mit-edu.top" />
  20.    <meta property="og:image" content="https://x.mit-edu.top/static/images/post/5.jpg" />
  21.    <meta property="og:article:published_time" content="2025-02-04T17:46:37Z" />
  22.    <meta property="og:article:author" content="Dr. Jonathan Torres" />
  23.    <meta property="og:article:section" content="mit-edu.top" />
  24.    <meta property="og:article:tag" content="Games, Mobile Games, Video Games" />
  25.    <!-- Schema.org -->
  26.    <script type="application/ld+json">{
  27.            "@context": "https://schema.org",
  28.            "@type": "ScholarlyArticle",
  29.            "headline": "Context-Aware AR Games for Promoting Sustainable Urban Living #739670489321 (2025-02-05)",
  30.            "author": {
  31.                "@type": "Person",
  32.                "name": "Dr. Jonathan Torres",
  33.                "affiliation": {
  34.                    "@type": "Organization",
  35.                    "name": "mit-edu.top"
  36.                },
  37.                "url": "https://blog-099173123762.mit-edu.top/post/4803197265"
  38.            },
  39.            "datePublished": "2025-02-04T17:46:37Z",
  40.            "image": "https://x.mit-edu.top/static/images/post/5.jpg",
  41.            "journal": {
  42.                "@type": "Periodical",
  43.                "name": "mit-edu.top",
  44.                "issn": "10.1069/739670489321"
  45.            },
  46.            "publisher": {
  47.                "@type": "Organization",
  48.                "name": "mit-edu.top",
  49.                "url": "https://blog-099173123762.mit-edu.top"
  50.            },
  51.            "doi": "739670489321",
  52.            "abstract": "Context-Aware AR Games for Promoting Sustainable Urban Living #739670489321 (2025-02-05)",
  53.            "citation": {
  54.                "@type": "CreativeWork",
  55.                "name": "Context-Aware AR Games for Promoting Sustainable Urban Living",
  56.                "author": "Dr. Jonathan Torres",
  57.                "datePublished": "2025-02-04T17:46:37Z",
  58.                "url": "https://blog-099173123762.mit-edu.top/post/4803197265"
  59.            }
  60.        }
  61.    </script>
  62. </head>
  63.  
  64. <body>
  65.    <div class="site-mobile-menu site-navbar-target">
  66.        <div class="site-mobile-menu-header">
  67.            <div class="site-mobile-menu-close">
  68.                <span class="icofont-close js-menu-toggle"></span>
  69.            </div>
  70.        </div>
  71.        <div class="site-mobile-menu-body"></div>
  72.    </div>
  73.    <nav class="site-nav">
  74.        <div class="container">
  75.            <div class="site-navigation">
  76.                <div class="row">
  77.                    <div class="col-md-6 text-center order-1 order-md-2 mb-3 mb-md-0">
  78.                        <a href="https://blog-099173123762.mit-edu.top" class="logo m-0 text-uppercase">mit-edu.top</a>
  79.                    </div>
  80.                    <div class="col-md-3 order-3 order-md-1">
  81.                    </div>
  82.                </div>
  83.            </div>
  84.        </div>
  85.    </nav>
  86.    <div class="section post-section pt-5">
  87.        <div class="container">
  88.            <div class="row justify-content-center">
  89.                <div class="col-lg-8">
  90.                    <div class="text-center">
  91.                        <img src="https://x.mit-edu.top/static/images/user/2.jpg" alt="Context-Aware AR Games for Promoting Sustainable Urban Living" title="Context-Aware AR Games for Promoting Sustainable Urban Living" class="author-pic img-fluid rounded-circle mx-auto">
  92.                    </div>
  93.                    <span class="d-block text-center">Jonathan Torres</span>
  94.                    <span class="date d-block text-center small text-uppercase text-black-50 mb-5">2025-02-05</span>
  95.                    <h2 class="heading text-center">Context-Aware AR Games for Promoting Sustainable Urban Living</h2>
  96.                    <p class="lead mb-4 text-center">Thanks to Jonathan Torres for contributing the article "Context-Aware AR Games for Promoting Sustainable Urban Living".
  97.                    </p>
  98.                    <img src="https://x.mit-edu.top/static/images/post/5.jpg" alt="Context-Aware AR Games for Promoting Sustainable Urban Living" title="Context-Aware AR Games for Promoting Sustainable Urban Living" class="img-fluid rounded mb-4 lazyload">
  99.                    <p>This research investigates the role of the psychological concept of "flow" in mobile gaming, focusing on the cognitive mechanisms that lead to optimal player experiences. Drawing upon cognitive science and game theory, the study explores how mobile games are designed to facilitate flow states through dynamic challenge-skill balancing, immediate feedback, and immersive environments. The paper also considers the implications of sustained flow experiences on player well-being, skill development, and the potential for using mobile games as tools for cognitive enhancement and education.</p>
  100. <p>This research explores the integration of virtual reality (VR) technologies into mobile games and investigates its psychological and physiological effects on players. The study examines how VR can enhance immersion, presence, and player agency within mobile game environments, particularly in genres like action, horror, and simulation games. Drawing from cognitive neuroscience and human factors research, the paper analyzes the impact of VR-induced experiences on cognitive load, emotional responses, and physical well-being, such as motion sickness or eye strain. The paper also explores the challenges of VR integration on mobile platforms, including hardware limitations, user comfort, and accessibility.</p>
  101. <p>This research explores how mobile gaming influences cultural identity and expression across different regions. It examines the role of mobile games in cultural exchange, preservation, and the representation of diverse cultures. This research investigates how mobile gaming affects sleep quality and duration, considering factors such as screen time, game content, and player demographics. It provides insights into the health implications of mobile gaming habits.</p>
  102. <p>The rise of e-sports has elevated gaming to a competitive arena, where skill, strategy, and teamwork converge to create spectacles that rival traditional sports. From epic tournaments with massive prize pools to professional leagues with dedicated fan bases, e-sports has become a global phenomenon, showcasing the talent and dedication of gamers worldwide. The adrenaline-fueled battles and nail-biting finishes not only entertain but also inspire a new generation of aspiring gamers and professional athletes.</p>
  103. <p>Gaming events and conventions serve as epicenters of excitement and celebration, where developers unveil new titles, showcase cutting-edge technology, host competitive tournaments, and connect with fans face-to-face. Events like E3, Gamescom, and PAX are not just gatherings but cultural phenomena that unite gaming enthusiasts in shared anticipation, excitement, and camaraderie.</p>
  104.  
  105.                    <p>
  106.                    <a href="/redirect/?url=https://blog-099173123762.mit-edu.top/post/4803197265" target="_blank" class="custom-link">Link</a>
  107.                    </p>
  108.                    <p><a href="https://www.linegames.org/" target="_blank" class="custom-link">External link</a>
  109. <a href="https://www.iliiili.com/" target="_blank" class="custom-link">External link</a>
  110. <a href="https://www.digwow.net/" target="_blank" class="custom-link">External link</a>
  111. <a href="https://www.free-giftcodes.com/" target="_blank" class="custom-link">External link</a>
  112. <a href="https://www.gifthub.com.ru/" target="_blank" class="custom-link">External link</a>
  113. <a href="https://184350547901-edu.iliiili.com/" target="_blank" class="custom-link">External link</a>
  114. <a href="https://606088364076-edu.digwow.net/" target="_blank" class="custom-link">External link</a>
  115. <a href="https://783075283729-edu.free-giftcodes.com/" target="_blank" class="custom-link">External link</a>
  116. <a href="https://783474534243-edu.gifthub.com.ru/" target="_blank" class="custom-link">External link</a>
  117. <a href="https://070577155553-gov.iliiili.com/" target="_blank" class="custom-link">External link</a>
  118. <a href="https://081454322779-gov.digwow.net/" target="_blank" class="custom-link">External link</a>
  119. <a href="https://132556863821-gov.free-giftcodes.com/" target="_blank" class="custom-link">External link</a>
  120. <a href="https://646192490635-gov.gifthub.com.ru/" target="_blank" class="custom-link">External link</a>
  121. <a href="https://068235258404-gov-edu.iliiili.com/" target="_blank" class="custom-link">External link</a>
  122. <a href="https://181574638358-gov-edu.digwow.net/" target="_blank" class="custom-link">External link</a>
  123. <a href="https://507561178002-gov-edu.free-giftcodes.com/" target="_blank" class="custom-link">External link</a>
  124. <a href="https://537477996144-gov-edu.gifthub.com.ru/" target="_blank" class="custom-link">External link</a>
  125. <a href="https://507433293040-edu.iliiili.com/?url=https://blog-099173123762.mit-edu.top/post/4803197265" target="_blank" class="custom-link">External link</a>
  126. <a href="https://268069322079-edu.digwow.net/?url=https://blog-099173123762.mit-edu.top/post/4803197265" target="_blank" class="custom-link">External link</a>
  127. <a href="https://879583044888-edu.free-giftcodes.com/?url=https://blog-099173123762.mit-edu.top/post/4803197265" target="_blank" class="custom-link">External link</a>
  128. <a href="https://107412539335-edu.gifthub.com.ru/?url=https://blog-099173123762.mit-edu.top/post/4803197265" target="_blank" class="custom-link">External link</a>
  129. <a href="https://278485463321-gov.iliiili.com/?url=https://blog-099173123762.mit-edu.top/post/4803197265" target="_blank" class="custom-link">External link</a>
  130. <a href="https://725103914765-gov.digwow.net/?url=https://blog-099173123762.mit-edu.top/post/4803197265" target="_blank" class="custom-link">External link</a>
  131. <a href="https://918852480228-gov.free-giftcodes.com/?url=https://blog-099173123762.mit-edu.top/post/4803197265" target="_blank" class="custom-link">External link</a>
  132. <a href="https://874117380990-gov.gifthub.com.ru/?url=https://blog-099173123762.mit-edu.top/post/4803197265" target="_blank" class="custom-link">External link</a>
  133. <a href="https://link.naver.com/bridge?392769361256&amp;url=https://blog-099173123762.mit-edu.top/post/4803197265" target="_blank" class="custom-link">External link</a>
  134. <a href="https://link.naver.com/bridge?594527315836&amp;url=https://naver594527315836-edu.digwow.net" target="_blank" class="custom-link">External link</a>
  135. <a href="https://link.naver.com/bridge?574563693879&amp;url=https://naver574563693879-edu.iliiili.com" target="_blank" class="custom-link">External link</a>
  136. <a href="https://link.naver.com/bridge?806931681133&amp;url=https://naver806931681133-edu.1717173.xyz" target="_blank" class="custom-link">External link</a>
  137. <a href="https://link.naver.com/bridge?875458005461&amp;url=https://naver875458005461-edu.gifthub.com.ru" target="_blank" class="custom-link">External link</a>
  138. <a href="https://link.naver.com/bridge?821118199792&amp;url=https://naver821118199792-gov.digwow.net" target="_blank" class="custom-link">External link</a>
  139. <a href="https://link.naver.com/bridge?851965352897&amp;url=https://naver851965352897-gov.iliiili.com" target="_blank" class="custom-link">External link</a>
  140. <a href="https://link.naver.com/bridge?708244437649&amp;url=https://naver708244437649-gov.1717173.xyz" target="_blank" class="custom-link">External link</a>
  141. <a href="https://link.naver.com/bridge?559438724921&amp;url=https://naver559438724921-gov.gifthub.com.ru" target="_blank" class="custom-link">External link</a>
  142. <a href="https://link.naver.com/bridge?456646416241&amp;url=https://naver456646416241-gov-edu.digwow.net" target="_blank" class="custom-link">External link</a>
  143. <a href="https://link.naver.com/bridge?794559404458&amp;url=https://naver794559404458-gov-edu.iliiili.com" target="_blank" class="custom-link">External link</a>
  144. <a href="https://link.naver.com/bridge?230722868432&amp;url=https://naver230722868432-gov-edu.1717173.xyz" target="_blank" class="custom-link">External link</a>
  145. <a href="https://link.naver.com/bridge?174708888333&amp;url=https://naver174708888333-gov-edu.gifthub.com.ru" target="_blank" class="custom-link">External link</a>
  146. <a href="https://blog-284729543615.gifthub.news/" target="_blank" class="custom-link">External link</a>
  147. <a href="https://blog-992746054534.jp-edu.sbs/" target="_blank" class="custom-link">External link</a>
  148. <a href="https://blog-422256584956.kr-edu.sbs/" target="_blank" class="custom-link">External link</a>
  149. <a href="https://blog-901273863048.krlinkedin.sbs/" target="_blank" class="custom-link">External link</a>
  150. <a href="https://blog-754107540865.mit-edu.sbs/" target="_blank" class="custom-link">External link</a>
  151. <a href="https://blog-423929520747.mit-edu.buzz/" target="_blank" class="custom-link">External link</a>
  152. <a href="https://blog-024438204624.mit-edu.tech/" target="_blank" class="custom-link">External link</a>
  153. <a href="https://blog-479466919301.mit-edu.site/" target="_blank" class="custom-link">External link</a>
  154. <a href="https://blog-263338041485.mit-edu.top/" target="_blank" class="custom-link">External link</a>
  155. <a href="https://blog-305777215252.usa-gov.top/" target="_blank" class="custom-link">External link</a>
  156. <a href="https://research-854894921354.mit-edu.pp.ua/?url=https://blog-099173123762.mit-edu.top/post/4803197265" target="_blank" class="custom-link">External link</a>
  157. <a href="https://research-259307848415.harvard-edu.pp.ua/?url=https://blog-099173123762.mit-edu.top/post/4803197265" target="_blank" class="custom-link">External link</a>
  158. <a href="https://research-246862057436.stanford-edu.pp.ua/?url=https://blog-099173123762.mit-edu.top/post/4803197265" target="_blank" class="custom-link">External link</a>
  159. <a href="https://research-939074590430.cambridge-edu.pp.ua/?url=https://blog-099173123762.mit-edu.top/post/4803197265" target="_blank" class="custom-link">External link</a>
  160. <a href="https://research-114066580267.berkeley-edu.pp.ua/?url=https://blog-099173123762.mit-edu.top/post/4803197265" target="_blank" class="custom-link">External link</a>
  161. <a href="https://research-572215919816.oxford-edu.pp.ua/?url=https://blog-099173123762.mit-edu.top/post/4803197265" target="_blank" class="custom-link">External link</a>
  162. <a href="https://research-375318420936-edu.wwv.pp.ua/?url=https://blog-099173123762.mit-edu.top/post/4803197265" target="_blank" class="custom-link">External link</a>
  163. <a href="https://research-584611368690-edu.sean.pp.ua/?url=https://blog-099173123762.mit-edu.top/post/4803197265" target="_blank" class="custom-link">External link</a>
  164. <a href="https://research-191083710241-edu.line.pp.ua/?url=https://blog-099173123762.mit-edu.top/post/4803197265" target="_blank" class="custom-link">External link</a>
  165. </p>
  166.                    <div class="row mt-5 pt-5 border-top">
  167.                    </div>
  168.                </div>
  169.            </div>
  170.        </div>
  171.    </div>
  172.    <div class="section pb-0">
  173.        <div class="container">
  174.            <div class="row">
  175.                <div class="col-lg-12">
  176.                    <h2 class="heading">Related</h2>
  177.                </div>
  178.            </div>
  179.            <div class="row justify-content-center">
  180.                <div class="col-lg-12">
  181.                    <div class="post-entry d-md-flex small-horizontal mb-5">
  182.                        <div class="me-md-5 thumbnail mb-3 mb-md-0">
  183.                            <a href="https://blog-099173123762.mit-edu.top/post/8391054276">
  184.                            <img src="https://x.mit-edu.top/static/images/post/5.jpg" alt="Serious Games as Tools for Improving Spatial Reasoning in K-12 Education" title="Serious Games as Tools for Improving Spatial Reasoning in K-12 Education" class="img-fluid lazyload">
  185.                            </a>
  186.                        </div>
  187.                        <div class="content">
  188.                            <div class="post-meta mb-3">
  189.                                <a href="https://blog-8391054276.mit-edu.top/post/8391054276/" target="_blank">
  190.                                <span class="date">2025-02-05</span>
  191.                                </a>
  192.                            </div>
  193.                            <h2 class="heading"><a href="https://blog-099173123762.mit-edu.top/post/8391054276">Serious Games as Tools for Improving Spatial Reasoning in K-12 Education</a></h2>
  194.                            <p class="info">In the labyrinth of quests and adventures, gamers become digital explorers, venturing into uncharted territories and unraveling mysteries that test their wit and resolve. Whether embarking on a daring rescue mission or delving deep into ancient ruins, each quest becomes a personal journey, shaping characters and forging legends that echo through the annals of gaming history. The thrill of overcoming obstacles and the satisfaction of completing objectives fuel the relentless pursuit of new challenges and the quest for gaming excellence.</p>
  195.                            <a href="https://blog-099173123762.mit-edu.top/post/8391054276" class="post-author d-flex align-items-center">
  196.                                <div class="author-pic">
  197.                                    <img src="https://x.mit-edu.top/static/images/user/2.jpg" alt="Serious Games as Tools for Improving Spatial Reasoning in K-12 Education" title="Serious Games as Tools for Improving Spatial Reasoning in K-12 Education" class="lazyload">
  198.                                </div>
  199.                                <div class="text">
  200.                                    <strong>Donna Perez</strong>
  201.                                    <span>2025-02-05 published post</span>
  202.                                </div>
  203.                            </a>
  204.                        </div>
  205.                    </div>
  206.                </div>
  207.                <div class="col-lg-12">
  208.                    <div class="post-entry d-md-flex small-horizontal mb-5">
  209.                        <div class="me-md-5 thumbnail mb-3 mb-md-0">
  210.                            <a href="https://blog-099173123762.mit-edu.top/post/6951724830">
  211.                            <img src="https://x.mit-edu.top/static/images/post/18.jpg" alt="Optimizing Subscription Models in Mobile Games Through A/B Testing" title="Optimizing Subscription Models in Mobile Games Through A/B Testing" class="img-fluid lazyload">
  212.                            </a>
  213.                        </div>
  214.                        <div class="content">
  215.                            <div class="post-meta mb-3">
  216.                                <a href="https://blog-6951724830.mit-edu.top/post/6951724830/" target="_blank">
  217.                                <span class="date">2025-02-05</span>
  218.                                </a>
  219.                            </div>
  220.                            <h2 class="heading"><a href="https://blog-099173123762.mit-edu.top/post/6951724830">Optimizing Subscription Models in Mobile Games Through A/B Testing</a></h2>
  221.                            <p class="info">This research explores the intersection of mobile gaming and behavioral economics, focusing on how in-game purchases influence player decision-making. The study analyzes common behavioral biases, such as the “anchoring effect” and “loss aversion,” that developers exploit to encourage spending. It provides insights into how these economic principles affect the design of monetization strategies and the ethical considerations involved in manipulating player behavior.</p>
  222.                            <a href="https://blog-099173123762.mit-edu.top/post/6951724830" class="post-author d-flex align-items-center">
  223.                                <div class="author-pic">
  224.                                    <img src="https://x.mit-edu.top/static/images/user/4.jpg" alt="Optimizing Subscription Models in Mobile Games Through A/B Testing" title="Optimizing Subscription Models in Mobile Games Through A/B Testing" class="lazyload">
  225.                                </div>
  226.                                <div class="text">
  227.                                    <strong>Timothy Butler</strong>
  228.                                    <span>2025-02-05 published post</span>
  229.                                </div>
  230.                            </a>
  231.                        </div>
  232.                    </div>
  233.                </div>
  234.                <div class="col-lg-12">
  235.                    <div class="post-entry d-md-flex small-horizontal mb-5">
  236.                        <div class="me-md-5 thumbnail mb-3 mb-md-0">
  237.                            <a href="https://blog-099173123762.mit-edu.top/post/4385179602">
  238.                            <img src="https://x.mit-edu.top/static/images/post/18.jpg" alt="Integrating Spatial AI for Real-Time Environmental Interaction in AR Games" title="Integrating Spatial AI for Real-Time Environmental Interaction in AR Games" class="img-fluid lazyload">
  239.                            </a>
  240.                        </div>
  241.                        <div class="content">
  242.                            <div class="post-meta mb-3">
  243.                                <a href="https://blog-4385179602.mit-edu.top/post/4385179602/" target="_blank">
  244.                                <span class="date">2025-02-05</span>
  245.                                </a>
  246.                            </div>
  247.                            <h2 class="heading"><a href="https://blog-099173123762.mit-edu.top/post/4385179602">Integrating Spatial AI for Real-Time Environmental Interaction in AR Games</a></h2>
  248.                            <p class="info">The rise of e-sports has elevated gaming to a competitive arena, where skill, strategy, and teamwork converge to create spectacles that rival traditional sports. From epic tournaments with massive prize pools to professional leagues with dedicated fan bases, e-sports has become a global phenomenon, showcasing the talent and dedication of gamers worldwide. The adrenaline-fueled battles and nail-biting finishes not only entertain but also inspire a new generation of aspiring gamers and professional athletes.</p>
  249.                            <a href="https://blog-099173123762.mit-edu.top/post/4385179602" class="post-author d-flex align-items-center">
  250.                                <div class="author-pic">
  251.                                    <img src="https://x.mit-edu.top/static/images/user/13.jpg" alt="Integrating Spatial AI for Real-Time Environmental Interaction in AR Games" title="Integrating Spatial AI for Real-Time Environmental Interaction in AR Games" class="lazyload">
  252.                                </div>
  253.                                <div class="text">
  254.                                    <strong>Cynthia Bailey</strong>
  255.                                    <span>2025-02-05 published post</span>
  256.                                </div>
  257.                            </a>
  258.                        </div>
  259.                    </div>
  260.                </div>
  261.            </div>
  262.        </div>
  263.    </div>
  264.    <div class="py-5 bg-light mx-md-3 sec-subscribe">
  265.        <div class="container">
  266.            <div class="row">
  267.                <div class="col-lg-12">
  268.                    <h2 class="h4 fw-bold">Subscribe to newsletter</h2>
  269.                </div>
  270.            </div>
  271.            <form class="row">
  272.                <div class="col-md-8">
  273.                    <div class="mb-3 mb-md-0">
  274.                        <input type="email" class="form-control" placeholder="Enter your email">
  275.                    </div>
  276.                </div>
  277.                <div class="col-md-4 d-grid">
  278.                    <input type="submit" class="btn btn-primary" value="Subscribe">
  279.                </div>
  280.            </form>
  281.        </div>
  282.    </div>
  283.    <div class="site-footer">
  284.        <div class="container">
  285.            <div class="row justify-content-center copyright">
  286.                <div class="col-lg-7 text-center">
  287.                    <div class="widget">
  288.                        <p>Copyright &copy;
  289.                            <script>document.write(new Date().getFullYear());</script> All rights reserved.
  290.                        </p>
  291. <p>
  292.    < Top VPS Hosting Choice ><br>
  293.    <a href="https://evolution-host.com?ref=DQgZ6P" target="_blank">
  294.        <img src="https://x.mit-edu.top/static/images/evolution-host.png" alt="Evolution Host" title="Evolution Host" class="evhost lazyload">
  295.    </a>
  296. </p>
  297.                    </div>
  298.                </div>
  299.            </div>
  300.        </div>
  301.    </div>
  302. </body>
  303.  
  304. </html>
Copyright © 2002-9 Sam Ruby, Mark Pilgrim, Joseph Walton, and Phil Ringnalda