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://308601.mit-edu.top/post/3684127950

  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>Player Retention Metrics and Their Correlation with Monetization Success #160408449292 (2025-02-03)</title>
  9.    <link rel="canonical" href="https://308601.mit-edu.top/post/3684127950">
  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="Player Retention Metrics and Their Correlation with Monetization Success" />
  17.    <meta property="og:description" content="Player Retention Metrics and Their Correlation with Monetization Success #160408449292 (2025-02-03)" />
  18.    <meta property="og:url" content="https://308601.mit-edu.top/post/3684127950" />
  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="2025-02-02T20:56:15Z" />
  22.    <meta property="og:article:author" content="Dr. Frank James" />
  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": "Player Retention Metrics and Their Correlation with Monetization Success #160408449292 (2025-02-03)",
  30.            "author": {
  31.                "@type": "Person",
  32.                "name": "Dr. Frank James",
  33.                "affiliation": {
  34.                    "@type": "Organization",
  35.                    "name": "mit-edu.top"
  36.                },
  37.                "url": "https://308601.mit-edu.top/post/3684127950"
  38.            },
  39.            "datePublished": "2025-02-02T20:56:15Z",
  40.            "image": "https://x.mit-edu.top/static/images/post/5.jpg",
  41.            "journal": {
  42.                "@type": "Periodical",
  43.                "name": "mit-edu.top",
  44.                "issn": "10.1069/160408449292"
  45.            },
  46.            "publisher": {
  47.                "@type": "Organization",
  48.                "name": "mit-edu.top",
  49.                "url": "https://308601.mit-edu.top"
  50.            },
  51.            "doi": "160408449292",
  52.            "abstract": "Player Retention Metrics and Their Correlation with Monetization Success #160408449292 (2025-02-03)",
  53.            "citation": {
  54.                "@type": "CreativeWork",
  55.                "name": "Player Retention Metrics and Their Correlation with Monetization Success",
  56.                "author": "Dr. Frank James",
  57.                "datePublished": "2025-02-02T20:56:15Z",
  58.                "url": "https://308601.mit-edu.top/post/3684127950"
  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://308601.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/6.jpg" alt="Player Retention Metrics and Their Correlation with Monetization Success" title="Player Retention Metrics and Their Correlation with Monetization Success" class="author-pic img-fluid rounded-circle mx-auto">
  92.                    </div>
  93.                    <span class="d-block text-center">Frank James</span>
  94.                    <span class="date d-block text-center small text-uppercase text-black-50 mb-5">2025-02-03</span>
  95.                    <h2 class="heading text-center">Player Retention Metrics and Their Correlation with Monetization Success</h2>
  96.                    <p class="lead mb-4 text-center">Thanks to Frank James for contributing the article "Player Retention Metrics and Their Correlation with Monetization Success".
  97.                    </p>
  98.                    <img src="https://x.mit-edu.top/static/images/post/5.jpg" alt="Player Retention Metrics and Their Correlation with Monetization Success" title="Player Retention Metrics and Their Correlation with Monetization Success" class="img-fluid rounded mb-4 lazyload">
  99.                    <p>This research examines the intersection of mobile games and the evolving landscape of media consumption, particularly in the context of journalism and news delivery. The study explores how mobile games are influencing the way users consume information, engage with news stories, and interact with media content. By analyzing game mechanics such as interactive narratives, role-playing elements, and user-driven content creation, the paper investigates how mobile games can be leveraged to deliver news in novel ways that increase engagement and foster critical thinking. The research also addresses the challenges of misinformation, echo chambers, and the ethical implications of gamified news delivery.</p>
  100. <p>This paper delves into the concept of digital addiction, specifically focusing on the psychological and social impacts of excessive mobile game usage. The research examines how mobile gaming, particularly in free-to-play models, contributes to behavioral addiction, exploring how reward loops, social pressure, and the desire for progression can lead to compulsive gaming behavior. Drawing on psychological theories of addiction, habit formation, and reward systems, the study analyzes the mental health consequences of excessive gaming, such as sleep disruption, anxiety, and social isolation. The paper also evaluates preventive and intervention strategies, including digital well-being tools and game design modifications, to mitigate the risk of addiction.</p>
  101. <p>Virtual reality transports players to alternate dimensions, blurring the lines between reality and fiction, and offering glimpses of futuristic realms yet to be explored. Through immersive simulations and interactive experiences, VR technology revolutionizes gaming, providing unprecedented levels of immersion and engagement. From virtual adventures in space to realistic simulations of historical events, VR opens doors to limitless possibilities, inviting players to step into worlds beyond imagination.</p>
  102. <p>This paper focuses on the cybersecurity risks associated with mobile games, specifically exploring how game applications collect, store, and share player data. The study examines the security vulnerabilities inherent in mobile gaming platforms, such as data breaches, unauthorized access, and exploitation of user information. Drawing on frameworks from cybersecurity research and privacy law, the paper investigates the implications of mobile game data collection on user privacy and the broader implications for digital identity protection. The research also provides policy recommendations for improving the security and privacy protocols in the mobile gaming industry, ensuring that players’ data is adequately protected.</p>
  103. <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>
  104.  
  105.                    <p>
  106.                    <a href="/redirect/?url=https://308601.mit-edu.top/post/3684127950" 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://135386186629-edu.iliiili.com/" target="_blank" class="custom-link">External link</a>
  114. <a href="https://688780414532-edu.digwow.net/" target="_blank" class="custom-link">External link</a>
  115. <a href="https://752432846385-edu.free-giftcodes.com/" target="_blank" class="custom-link">External link</a>
  116. <a href="https://093766625503-edu.gifthub.com.ru/" target="_blank" class="custom-link">External link</a>
  117. <a href="https://544008374527-gov.iliiili.com/" target="_blank" class="custom-link">External link</a>
  118. <a href="https://802430940317-gov.digwow.net/" target="_blank" class="custom-link">External link</a>
  119. <a href="https://089549904414-gov.free-giftcodes.com/" target="_blank" class="custom-link">External link</a>
  120. <a href="https://242604494638-gov.gifthub.com.ru/" target="_blank" class="custom-link">External link</a>
  121. <a href="https://732764473437-gov-edu.iliiili.com/" target="_blank" class="custom-link">External link</a>
  122. <a href="https://427869293464-gov-edu.digwow.net/" target="_blank" class="custom-link">External link</a>
  123. <a href="https://803267130317-gov-edu.free-giftcodes.com/" target="_blank" class="custom-link">External link</a>
  124. <a href="https://865208950737-gov-edu.gifthub.com.ru/" target="_blank" class="custom-link">External link</a>
  125. <a href="https://666003593820-edu.iliiili.com/?url=https://308601.mit-edu.top/post/3684127950" target="_blank" class="custom-link">External link</a>
  126. <a href="https://633775561082-edu.digwow.net/?url=https://308601.mit-edu.top/post/3684127950" target="_blank" class="custom-link">External link</a>
  127. <a href="https://887850626327-edu.free-giftcodes.com/?url=https://308601.mit-edu.top/post/3684127950" target="_blank" class="custom-link">External link</a>
  128. <a href="https://687979933301-edu.gifthub.com.ru/?url=https://308601.mit-edu.top/post/3684127950" target="_blank" class="custom-link">External link</a>
  129. <a href="https://857055243029-gov.iliiili.com/?url=https://308601.mit-edu.top/post/3684127950" target="_blank" class="custom-link">External link</a>
  130. <a href="https://191824582389-gov.digwow.net/?url=https://308601.mit-edu.top/post/3684127950" target="_blank" class="custom-link">External link</a>
  131. <a href="https://283623709415-gov.free-giftcodes.com/?url=https://308601.mit-edu.top/post/3684127950" target="_blank" class="custom-link">External link</a>
  132. <a href="https://049442451534-gov.gifthub.com.ru/?url=https://308601.mit-edu.top/post/3684127950" target="_blank" class="custom-link">External link</a>
  133. <a href="https://link.naver.com/bridge?092221259522&amp;url=https://308601.mit-edu.top/post/3684127950" target="_blank" class="custom-link">External link</a>
  134. <a href="https://link.naver.com/bridge?992844458393&amp;url=https://naver992844458393-edu.digwow.net" target="_blank" class="custom-link">External link</a>
  135. <a href="https://link.naver.com/bridge?648892202534&amp;url=https://naver648892202534-edu.iliiili.com" target="_blank" class="custom-link">External link</a>
  136. <a href="https://link.naver.com/bridge?650612802197&amp;url=https://naver650612802197-edu.1717173.xyz" target="_blank" class="custom-link">External link</a>
  137. <a href="https://link.naver.com/bridge?642472746626&amp;url=https://naver642472746626-edu.gifthub.com.ru" target="_blank" class="custom-link">External link</a>
  138. <a href="https://link.naver.com/bridge?946109665736&amp;url=https://naver946109665736-gov.digwow.net" target="_blank" class="custom-link">External link</a>
  139. <a href="https://link.naver.com/bridge?927246900258&amp;url=https://naver927246900258-gov.iliiili.com" target="_blank" class="custom-link">External link</a>
  140. <a href="https://link.naver.com/bridge?423195790400&amp;url=https://naver423195790400-gov.1717173.xyz" target="_blank" class="custom-link">External link</a>
  141. <a href="https://link.naver.com/bridge?367941534268&amp;url=https://naver367941534268-gov.gifthub.com.ru" target="_blank" class="custom-link">External link</a>
  142. <a href="https://link.naver.com/bridge?958083826246&amp;url=https://naver958083826246-gov-edu.digwow.net" target="_blank" class="custom-link">External link</a>
  143. <a href="https://link.naver.com/bridge?715856892687&amp;url=https://naver715856892687-gov-edu.iliiili.com" target="_blank" class="custom-link">External link</a>
  144. <a href="https://link.naver.com/bridge?740177063861&amp;url=https://naver740177063861-gov-edu.1717173.xyz" target="_blank" class="custom-link">External link</a>
  145. <a href="https://link.naver.com/bridge?254978659135&amp;url=https://naver254978659135-gov-edu.gifthub.com.ru" target="_blank" class="custom-link">External link</a>
  146. <a href="https://blog-725083768875.gifthub.news/" target="_blank" class="custom-link">External link</a>
  147. <a href="https://blog-581968094491.jp-edu.sbs/" target="_blank" class="custom-link">External link</a>
  148. <a href="https://blog-256260742240.kr-edu.sbs/" target="_blank" class="custom-link">External link</a>
  149. <a href="https://blog-626504062259.krlinkedin.sbs/" target="_blank" class="custom-link">External link</a>
  150. <a href="https://blog-069408623350.mit-edu.sbs/" target="_blank" class="custom-link">External link</a>
  151. <a href="https://blog-324559621272.mit-edu.buzz/" target="_blank" class="custom-link">External link</a>
  152. <a href="https://blog-779094000951.mit-edu.tech/" target="_blank" class="custom-link">External link</a>
  153. <a href="https://blog-724159181637.mit-edu.site/" target="_blank" class="custom-link">External link</a>
  154. <a href="https://blog-599626904804.mit-edu.top/" target="_blank" class="custom-link">External link</a>
  155. <a href="https://blog-305490573988.usa-gov.top/" target="_blank" class="custom-link">External link</a>
  156. <a href="https://research-906160810883.mit-edu.pp.ua/?url=https://308601.mit-edu.top/post/3684127950" target="_blank" class="custom-link">External link</a>
  157. <a href="https://research-583964494944.harvard-edu.pp.ua/?url=https://308601.mit-edu.top/post/3684127950" target="_blank" class="custom-link">External link</a>
  158. <a href="https://research-092391192808.stanford-edu.pp.ua/?url=https://308601.mit-edu.top/post/3684127950" target="_blank" class="custom-link">External link</a>
  159. <a href="https://research-990079327723.cambridge-edu.pp.ua/?url=https://308601.mit-edu.top/post/3684127950" target="_blank" class="custom-link">External link</a>
  160. <a href="https://research-163667167407.berkeley-edu.pp.ua/?url=https://308601.mit-edu.top/post/3684127950" target="_blank" class="custom-link">External link</a>
  161. <a href="https://research-526706605702.oxford-edu.pp.ua/?url=https://308601.mit-edu.top/post/3684127950" target="_blank" class="custom-link">External link</a>
  162. <a href="https://research-645417834100-edu.wwv.pp.ua/?url=https://308601.mit-edu.top/post/3684127950" target="_blank" class="custom-link">External link</a>
  163. <a href="https://research-927667429000-edu.sean.pp.ua/?url=https://308601.mit-edu.top/post/3684127950" target="_blank" class="custom-link">External link</a>
  164. <a href="https://research-661241406047-edu.line.pp.ua/?url=https://308601.mit-edu.top/post/3684127950" 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://308601.mit-edu.top/post/8237964501">
  184.                            <img src="https://x.mit-edu.top/static/images/post/5.jpg" alt="Analyzing Revenue Streams in Mobile Games: A Case Study Approach" title="Analyzing Revenue Streams in Mobile Games: A Case Study Approach" class="img-fluid lazyload">
  185.                            </a>
  186.                        </div>
  187.                        <div class="content">
  188.                            <div class="post-meta mb-3">
  189.                                <a href="https://blog-8237964501.mit-edu.top/post/8237964501/" target="_blank">
  190.                                <span class="date">2025-02-03</span>
  191.                                </a>
  192.                            </div>
  193.                            <h2 class="heading"><a href="https://308601.mit-edu.top/post/8237964501">Analyzing Revenue Streams in Mobile Games: A Case Study Approach</a></h2>
  194.                            <p class="info">This paper explores the integration of artificial intelligence (AI) in mobile game design to enhance player experience through adaptive gameplay systems. The study focuses on how AI-driven algorithms adjust game difficulty, narrative progression, and player interaction based on individual player behavior, preferences, and skill levels. Drawing on theories of personalized learning, machine learning, and human-computer interaction, the research investigates the potential for AI to create more immersive and personalized gaming experiences. The paper also examines the ethical considerations of AI in games, particularly concerning data privacy, algorithmic bias, and the manipulation of player behavior.</p>
  195.                            <a href="https://308601.mit-edu.top/post/8237964501" class="post-author d-flex align-items-center">
  196.                                <div class="author-pic">
  197.                                    <img src="https://x.mit-edu.top/static/images/user/6.jpg" alt="Analyzing Revenue Streams in Mobile Games: A Case Study Approach" title="Analyzing Revenue Streams in Mobile Games: A Case Study Approach" class="lazyload">
  198.                                </div>
  199.                                <div class="text">
  200.                                    <strong>Ryan Morgan</strong>
  201.                                    <span>2025-02-03 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://308601.mit-edu.top/post/3659217840">
  211.                            <img src="https://x.mit-edu.top/static/images/post/14.jpg" alt="Decentralized Autonomous Organizations in Player-Driven Game Development" title="Decentralized Autonomous Organizations in Player-Driven Game Development" class="img-fluid lazyload">
  212.                            </a>
  213.                        </div>
  214.                        <div class="content">
  215.                            <div class="post-meta mb-3">
  216.                                <a href="https://blog-3659217840.mit-edu.top/post/3659217840/" target="_blank">
  217.                                <span class="date">2025-02-03</span>
  218.                                </a>
  219.                            </div>
  220.                            <h2 class="heading"><a href="https://308601.mit-edu.top/post/3659217840">Decentralized Autonomous Organizations in Player-Driven Game Development</a></h2>
  221.                            <p class="info">This research examines the role of geolocation-based augmented reality (AR) games in transforming how urban spaces are perceived and interacted with by players. The study investigates how AR mobile games such as Pokémon Go integrate physical locations into gameplay, creating a hybrid digital-physical experience. The paper explores the implications of geolocation-based games for urban planning, public space use, and social interaction, considering both the positive and negative effects of blending virtual experiences with real-world environments. It also addresses ethical concerns regarding data privacy, surveillance, and the potential for gamifying everyday spaces in ways that affect public life.</p>
  222.                            <a href="https://308601.mit-edu.top/post/3659217840" class="post-author d-flex align-items-center">
  223.                                <div class="author-pic">
  224.                                    <img src="https://x.mit-edu.top/static/images/user/20.jpg" alt="Decentralized Autonomous Organizations in Player-Driven Game Development" title="Decentralized Autonomous Organizations in Player-Driven Game Development" class="lazyload">
  225.                                </div>
  226.                                <div class="text">
  227.                                    <strong>Brandon Barnes</strong>
  228.                                    <span>2025-02-03 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://308601.mit-edu.top/post/6079483251">
  238.                            <img src="https://x.mit-edu.top/static/images/post/11.jpg" alt="Tokenized Ecosystems for Cross-Game Asset Liquidity and Interoperability" title="Tokenized Ecosystems for Cross-Game Asset Liquidity and Interoperability" class="img-fluid lazyload">
  239.                            </a>
  240.                        </div>
  241.                        <div class="content">
  242.                            <div class="post-meta mb-3">
  243.                                <a href="https://blog-6079483251.mit-edu.top/post/6079483251/" target="_blank">
  244.                                <span class="date">2025-02-03</span>
  245.                                </a>
  246.                            </div>
  247.                            <h2 class="heading"><a href="https://308601.mit-edu.top/post/6079483251">Tokenized Ecosystems for Cross-Game Asset Liquidity and Interoperability</a></h2>
  248.                            <p class="info">This study applies social psychology theories to understand how group identity and collective behavior are formed and manifested within multiplayer mobile games. The research investigates the ways in which players form alliances, establish group norms, and engage in cooperative or competitive behaviors. By analyzing case studies of popular multiplayer mobile games, the paper explores the role of ingroups and outgroups, social influence, and group polarization within game environments. It also examines the psychological effects of online social interaction in gaming communities, discussing how mobile games foster both prosocial behavior and toxic interactions within groups.</p>
  249.                            <a href="https://308601.mit-edu.top/post/6079483251" 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="Tokenized Ecosystems for Cross-Game Asset Liquidity and Interoperability" title="Tokenized Ecosystems for Cross-Game Asset Liquidity and Interoperability" class="lazyload">
  252.                                </div>
  253.                                <div class="text">
  254.                                    <strong>Melissa Collins</strong>
  255.                                    <span>2025-02-03 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