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-9453680721.gifthub.news/post/4519308726

  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>A Systematic Review of Mobile Games for STEM Skill Development #290127348483 (2025-01-31)</title>
  9.    <link rel="canonical" href="https://blog-9453680721.gifthub.news/post/4519308726">
  10.    <link rel="stylesheet" href="https://fonts.googleapis.com/css2?family=Poppins:wght@400;700&display=swap">
  11.    <link rel="stylesheet" href="https://x.gifthub.news/static/css/style.css">
  12.    <script src="https://x.gifthub.news/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="A Systematic Review of Mobile Games for STEM Skill Development" />
  17.    <meta property="og:description" content="A Systematic Review of Mobile Games for STEM Skill Development #290127348483 (2025-01-31)" />
  18.    <meta property="og:url" content="https://blog-9453680721.gifthub.news/post/4519308726" />
  19.    <meta property="og:site_name" content="gifthub.news" />
  20.    <meta property="og:image" content="https://x.gifthub.news/static/images/post/12.jpg" />
  21.    <meta property="og:article:published_time" content="2025-01-31T13:46:36Z" />
  22.    <meta property="og:article:author" content="Dr. Michelle Turner" />
  23.    <meta property="og:article:section" content="gifthub.news" />
  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": "A Systematic Review of Mobile Games for STEM Skill Development #290127348483 (2025-01-31)",
  30.            "author": {
  31.                "@type": "Person",
  32.                "name": "Dr. Michelle Turner",
  33.                "affiliation": {
  34.                    "@type": "Organization",
  35.                    "name": "gifthub.news"
  36.                },
  37.                "url": "https://blog-9453680721.gifthub.news/post/4519308726"
  38.            },
  39.            "datePublished": "2025-01-31T13:46:36Z",
  40.            "image": "https://x.gifthub.news/static/images/post/12.jpg",
  41.            "journal": {
  42.                "@type": "Periodical",
  43.                "name": "gifthub.news",
  44.                "issn": "10.1069/290127348483"
  45.            },
  46.            "publisher": {
  47.                "@type": "Organization",
  48.                "name": "gifthub.news",
  49.                "url": "https://blog-9453680721.gifthub.news"
  50.            },
  51.            "doi": "290127348483",
  52.            "abstract": "A Systematic Review of Mobile Games for STEM Skill Development #290127348483 (2025-01-31)",
  53.            "citation": {
  54.                "@type": "CreativeWork",
  55.                "name": "A Systematic Review of Mobile Games for STEM Skill Development",
  56.                "author": "Dr. Michelle Turner",
  57.                "datePublished": "2025-01-31T13:46:36Z",
  58.                "url": "https://blog-9453680721.gifthub.news/post/4519308726"
  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-9453680721.gifthub.news" class="logo m-0 text-uppercase">gifthub.news</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.gifthub.news/static/images/user/19.jpg" alt="A Systematic Review of Mobile Games for STEM Skill Development" title="A Systematic Review of Mobile Games for STEM Skill Development" class="author-pic img-fluid rounded-circle mx-auto">
  92.                    </div>
  93.                    <span class="d-block text-center">Michelle Turner</span>
  94.                    <span class="date d-block text-center small text-uppercase text-black-50 mb-5">2025-01-31</span>
  95.                    <h2 class="heading text-center">A Systematic Review of Mobile Games for STEM Skill Development</h2>
  96.                    <p class="lead mb-4 text-center">Thanks to Michelle Turner for contributing the article "A Systematic Review of Mobile Games for STEM Skill Development".
  97.                    </p>
  98.                    <img src="https://x.gifthub.news/static/images/post/12.jpg" alt="A Systematic Review of Mobile Games for STEM Skill Development" title="A Systematic Review of Mobile Games for STEM Skill Development" class="img-fluid rounded mb-4 lazyload">
  99.                    <p>This paper investigates the impact of user-centric design principles in mobile games, focusing on how personalization and customization options influence player satisfaction and engagement. The research analyzes how mobile games employ features such as personalized avatars, dynamic content, and adaptive difficulty settings to cater to individual player preferences. By applying frameworks from human-computer interaction (HCI), motivation theory, and user experience (UX) design, the study explores how these design elements contribute to increased player retention, emotional attachment, and long-term engagement. The paper also considers the challenges of balancing personalization with accessibility, ensuring that customization does not exclude or frustrate diverse player groups.</p>
  100. <p>This research explores the relationship between mobile gaming habits and academic performance among students. It examines both positive aspects, such as improved cognitive skills, and negative aspects, such as decreased study time and attention.</p>
  101. <p>Indie game developers play a vital role in shaping the diverse landscape of gaming, bringing fresh perspectives, innovative gameplay mechanics, and compelling narratives to the forefront. Their creative freedom and entrepreneurial spirit fuel a culture of experimentation and discovery, driving the industry forward with bold ideas and unique gaming experiences that captivate players' imaginations.</p>
  102. <p>This paper analyzes the economic contributions of the mobile gaming industry to local economies, including job creation, revenue generation, and the development of related sectors such as tourism and retail. It provides case studies from various regions to illustrate these impacts.</p>
  103. <p>This paper applies Cognitive Load Theory (CLT) to the design and analysis of mobile games, focusing on how game mechanics, narrative structures, and visual stimuli impact players' cognitive load during gameplay. The study investigates how high levels of cognitive load can hinder learning outcomes and gameplay performance, especially in complex puzzle or strategy games. By combining cognitive psychology and game design theory, the paper develops a framework for balancing intrinsic, extraneous, and germane cognitive load in mobile game environments. The research offers guidelines for developers to optimize user experiences by enhancing mental performance and reducing cognitive fatigue.</p>
  104.  
  105.                    <p>
  106.                    <a href="/redirect/?url=https://blog-9453680721.gifthub.news/post/4519308726" 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://995973969700-edu.iliiili.com/" target="_blank" class="custom-link">External link</a>
  114. <a href="https://838314789264-edu.digwow.net/" target="_blank" class="custom-link">External link</a>
  115. <a href="https://057406006593-edu.free-giftcodes.com/" target="_blank" class="custom-link">External link</a>
  116. <a href="https://980861954785-edu.gifthub.com.ru/" target="_blank" class="custom-link">External link</a>
  117. <a href="https://254170675425-gov.iliiili.com/" target="_blank" class="custom-link">External link</a>
  118. <a href="https://035685083070-gov.digwow.net/" target="_blank" class="custom-link">External link</a>
  119. <a href="https://165544160587-gov.free-giftcodes.com/" target="_blank" class="custom-link">External link</a>
  120. <a href="https://545098601270-gov.gifthub.com.ru/" target="_blank" class="custom-link">External link</a>
  121. <a href="https://778175291855-gov-edu.iliiili.com/" target="_blank" class="custom-link">External link</a>
  122. <a href="https://262210075584-gov-edu.digwow.net/" target="_blank" class="custom-link">External link</a>
  123. <a href="https://444571548466-gov-edu.free-giftcodes.com/" target="_blank" class="custom-link">External link</a>
  124. <a href="https://985160786918-gov-edu.gifthub.com.ru/" target="_blank" class="custom-link">External link</a>
  125. <a href="https://016574919476-edu.iliiili.com/?url=https://blog-9453680721.gifthub.news/post/4519308726" target="_blank" class="custom-link">External link</a>
  126. <a href="https://531477065582-edu.digwow.net/?url=https://blog-9453680721.gifthub.news/post/4519308726" target="_blank" class="custom-link">External link</a>
  127. <a href="https://651342244801-edu.free-giftcodes.com/?url=https://blog-9453680721.gifthub.news/post/4519308726" target="_blank" class="custom-link">External link</a>
  128. <a href="https://293141894031-edu.gifthub.com.ru/?url=https://blog-9453680721.gifthub.news/post/4519308726" target="_blank" class="custom-link">External link</a>
  129. <a href="https://738396661796-gov.iliiili.com/?url=https://blog-9453680721.gifthub.news/post/4519308726" target="_blank" class="custom-link">External link</a>
  130. <a href="https://911401521945-gov.digwow.net/?url=https://blog-9453680721.gifthub.news/post/4519308726" target="_blank" class="custom-link">External link</a>
  131. <a href="https://035438512452-gov.free-giftcodes.com/?url=https://blog-9453680721.gifthub.news/post/4519308726" target="_blank" class="custom-link">External link</a>
  132. <a href="https://018198890030-gov.gifthub.com.ru/?url=https://blog-9453680721.gifthub.news/post/4519308726" target="_blank" class="custom-link">External link</a>
  133. <a href="https://link.naver.com/bridge?183387981535&amp;url=https://blog-9453680721.gifthub.news/post/4519308726" target="_blank" class="custom-link">External link</a>
  134. <a href="https://link.naver.com/bridge?396632934853&amp;url=https://naver396632934853-edu.digwow.net" target="_blank" class="custom-link">External link</a>
  135. <a href="https://link.naver.com/bridge?632735854192&amp;url=https://naver632735854192-edu.iliiili.com" target="_blank" class="custom-link">External link</a>
  136. <a href="https://link.naver.com/bridge?991044583256&amp;url=https://naver991044583256-edu.1717173.xyz" target="_blank" class="custom-link">External link</a>
  137. <a href="https://link.naver.com/bridge?440825299473&amp;url=https://naver440825299473-edu.gifthub.com.ru" target="_blank" class="custom-link">External link</a>
  138. <a href="https://link.naver.com/bridge?059468768862&amp;url=https://naver059468768862-gov.digwow.net" target="_blank" class="custom-link">External link</a>
  139. <a href="https://link.naver.com/bridge?321646391384&amp;url=https://naver321646391384-gov.iliiili.com" target="_blank" class="custom-link">External link</a>
  140. <a href="https://link.naver.com/bridge?803841146093&amp;url=https://naver803841146093-gov.1717173.xyz" target="_blank" class="custom-link">External link</a>
  141. <a href="https://link.naver.com/bridge?969755088253&amp;url=https://naver969755088253-gov.gifthub.com.ru" target="_blank" class="custom-link">External link</a>
  142. <a href="https://link.naver.com/bridge?882010400895&amp;url=https://naver882010400895-gov-edu.digwow.net" target="_blank" class="custom-link">External link</a>
  143. <a href="https://link.naver.com/bridge?900519806781&amp;url=https://naver900519806781-gov-edu.iliiili.com" target="_blank" class="custom-link">External link</a>
  144. <a href="https://link.naver.com/bridge?399114503705&amp;url=https://naver399114503705-gov-edu.1717173.xyz" target="_blank" class="custom-link">External link</a>
  145. <a href="https://link.naver.com/bridge?846925515577&amp;url=https://naver846925515577-gov-edu.gifthub.com.ru" target="_blank" class="custom-link">External link</a>
  146. <a href="https://blog-567146275297.gifthub.news/" target="_blank" class="custom-link">External link</a>
  147. <a href="https://blog-747027502104.jp-edu.sbs/" target="_blank" class="custom-link">External link</a>
  148. <a href="https://blog-756304050874.kr-edu.sbs/" target="_blank" class="custom-link">External link</a>
  149. <a href="https://blog-402021706509.krlinkedin.sbs/" target="_blank" class="custom-link">External link</a>
  150. <a href="https://blog-360580056686.mit-edu.sbs/" target="_blank" class="custom-link">External link</a>
  151. <a href="https://blog-092170520733.mit-edu.buzz/" target="_blank" class="custom-link">External link</a>
  152. <a href="https://blog-903663599548.mit-edu.tech/" target="_blank" class="custom-link">External link</a>
  153. <a href="https://blog-643212921239.mit-edu.site/" target="_blank" class="custom-link">External link</a>
  154. <a href="https://blog-282265555811.mit-edu.top/" target="_blank" class="custom-link">External link</a>
  155. <a href="https://blog-271225090411.usa-gov.top/" target="_blank" class="custom-link">External link</a>
  156. <a href="https://research-613837855082.mit-edu.pp.ua/?url=https://blog-9453680721.gifthub.news/post/4519308726" target="_blank" class="custom-link">External link</a>
  157. <a href="https://research-537129346479.harvard-edu.pp.ua/?url=https://blog-9453680721.gifthub.news/post/4519308726" target="_blank" class="custom-link">External link</a>
  158. <a href="https://research-979010182565.stanford-edu.pp.ua/?url=https://blog-9453680721.gifthub.news/post/4519308726" target="_blank" class="custom-link">External link</a>
  159. <a href="https://research-250858002815.cambridge-edu.pp.ua/?url=https://blog-9453680721.gifthub.news/post/4519308726" target="_blank" class="custom-link">External link</a>
  160. <a href="https://research-840597485487.berkeley-edu.pp.ua/?url=https://blog-9453680721.gifthub.news/post/4519308726" target="_blank" class="custom-link">External link</a>
  161. <a href="https://research-505752287362.oxford-edu.pp.ua/?url=https://blog-9453680721.gifthub.news/post/4519308726" target="_blank" class="custom-link">External link</a>
  162. <a href="https://research-273465040199-edu.wwv.pp.ua/?url=https://blog-9453680721.gifthub.news/post/4519308726" target="_blank" class="custom-link">External link</a>
  163. <a href="https://research-847486137603-edu.sean.pp.ua/?url=https://blog-9453680721.gifthub.news/post/4519308726" target="_blank" class="custom-link">External link</a>
  164. <a href="https://research-921658976322-edu.line.pp.ua/?url=https://blog-9453680721.gifthub.news/post/4519308726" 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-9453680721.gifthub.news/post/9251834706">
  184.                            <img src="https://x.gifthub.news/static/images/post/12.jpg" alt="The Role of Flow Theory in Sustaining Long-Term Player Engagement" title="The Role of Flow Theory in Sustaining Long-Term Player Engagement" class="img-fluid lazyload">
  185.                            </a>
  186.                        </div>
  187.                        <div class="content">
  188.                            <div class="post-meta mb-3">
  189.                                <a href="https://blog-9251834706.gifthub.news/post/9251834706/" target="_blank">
  190.                                <span class="date">2025-01-31</span>
  191.                                </a>
  192.                            </div>
  193.                            <h2 class="heading"><a href="https://blog-9453680721.gifthub.news/post/9251834706">The Role of Flow Theory in Sustaining Long-Term Player Engagement</a></h2>
  194.                            <p class="info">This paper examines the intersection of mobile games and behavioral economics, exploring how game mechanics can be used to influence economic decision-making and consumer behavior. Drawing on insights from psychology, game theory, and economics, the study analyzes how mobile games employ reward systems, uncertainty, risk-taking, and resource management to simulate real-world economic decisions. The research explores the potential for mobile games to be used as tools for teaching economic principles, as well as their role in shaping financial behavior in the digital economy. The paper also discusses the ethical considerations of using gamified elements in influencing players’ financial choices.</p>
  195.                            <a href="https://blog-9453680721.gifthub.news/post/9251834706" class="post-author d-flex align-items-center">
  196.                                <div class="author-pic">
  197.                                    <img src="https://x.gifthub.news/static/images/user/19.jpg" alt="The Role of Flow Theory in Sustaining Long-Term Player Engagement" title="The Role of Flow Theory in Sustaining Long-Term Player Engagement" class="lazyload">
  198.                                </div>
  199.                                <div class="text">
  200.                                    <strong>Brandon Barnes</strong>
  201.                                    <span>2025-01-31 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-9453680721.gifthub.news/post/6934510872">
  211.                            <img src="https://x.gifthub.news/static/images/post/2.jpg" alt="Mobile Game Narratives as Tools for Social Justice Education" title="Mobile Game Narratives as Tools for Social Justice Education" class="img-fluid lazyload">
  212.                            </a>
  213.                        </div>
  214.                        <div class="content">
  215.                            <div class="post-meta mb-3">
  216.                                <a href="https://blog-6934510872.gifthub.news/post/6934510872/" target="_blank">
  217.                                <span class="date">2025-01-31</span>
  218.                                </a>
  219.                            </div>
  220.                            <h2 class="heading"><a href="https://blog-9453680721.gifthub.news/post/6934510872">Mobile Game Narratives as Tools for Social Justice Education</a></h2>
  221.                            <p class="info">This study examines the sustainability of in-game economies in mobile games, focusing on virtual currencies, trade systems, and item marketplaces. The research explores how virtual economies are structured and how players interact with them, analyzing the balance between supply and demand, currency inflation, and the regulation of in-game resources. Drawing on economic theories of market dynamics and behavioral economics, the paper investigates how in-game economic systems influence player spending, engagement, and decision-making. The study also evaluates the role of developers in maintaining a stable virtual economy and mitigating issues such as inflation, pay-to-win mechanics, and market manipulation. The research provides recommendations for developers to create more sustainable and player-friendly in-game economies.</p>
  222.                            <a href="https://blog-9453680721.gifthub.news/post/6934510872" class="post-author d-flex align-items-center">
  223.                                <div class="author-pic">
  224.                                    <img src="https://x.gifthub.news/static/images/user/11.jpg" alt="Mobile Game Narratives as Tools for Social Justice Education" title="Mobile Game Narratives as Tools for Social Justice Education" class="lazyload">
  225.                                </div>
  226.                                <div class="text">
  227.                                    <strong>Frances Long</strong>
  228.                                    <span>2025-01-31 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-9453680721.gifthub.news/post/1406789523">
  238.                            <img src="https://x.gifthub.news/static/images/post/4.jpg" alt="Game-Centric Blockchain Architectures for Low-Latency Interactions" title="Game-Centric Blockchain Architectures for Low-Latency Interactions" class="img-fluid lazyload">
  239.                            </a>
  240.                        </div>
  241.                        <div class="content">
  242.                            <div class="post-meta mb-3">
  243.                                <a href="https://blog-1406789523.gifthub.news/post/1406789523/" target="_blank">
  244.                                <span class="date">2025-01-31</span>
  245.                                </a>
  246.                            </div>
  247.                            <h2 class="heading"><a href="https://blog-9453680721.gifthub.news/post/1406789523">Game-Centric Blockchain Architectures for Low-Latency Interactions</a></h2>
  248.                            <p class="info">This paper examines the role of multiplayer mobile games in facilitating socialization, community building, and the formation of online social networks. The study investigates how multiplayer features such as cooperative gameplay, competitive modes, and guilds foster interaction among players and create virtual communities. Drawing on social network theory and community dynamics, the research explores the impact of multiplayer mobile games on players' social behavior, including collaboration, communication, and identity formation. The paper also evaluates the potential negative effects of online gaming communities, such as toxicity, exclusion, and cyberbullying, and offers strategies for developers to promote positive social interaction and inclusive communities in multiplayer games.</p>
  249.                            <a href="https://blog-9453680721.gifthub.news/post/1406789523" class="post-author d-flex align-items-center">
  250.                                <div class="author-pic">
  251.                                    <img src="https://x.gifthub.news/static/images/user/6.jpg" alt="Game-Centric Blockchain Architectures for Low-Latency Interactions" title="Game-Centric Blockchain Architectures for Low-Latency Interactions" class="lazyload">
  252.                                </div>
  253.                                <div class="text">
  254.                                    <strong>Ryan Morgan</strong>
  255.                                    <span>2025-01-31 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.gifthub.news/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