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-049165743390.mit-edu.top/post/5816290473

  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>The Use of Gamification to Promote Environmental Stewardship #028256581303 (2025-02-08)</title>
  9.    <link rel="canonical" href="https://blog-049165743390.mit-edu.top/post/5816290473">
  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="The Use of Gamification to Promote Environmental Stewardship" />
  17.    <meta property="og:description" content="The Use of Gamification to Promote Environmental Stewardship #028256581303 (2025-02-08)" />
  18.    <meta property="og:url" content="https://blog-049165743390.mit-edu.top/post/5816290473" />
  19.    <meta property="og:site_name" content="mit-edu.top" />
  20.    <meta property="og:image" content="https://x.mit-edu.top/static/images/post/13.jpg" />
  21.    <meta property="og:article:published_time" content="2025-02-08T07:46:01Z" />
  22.    <meta property="og:article:author" content="Dr. Deborah Sanchez" />
  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": "The Use of Gamification to Promote Environmental Stewardship #028256581303 (2025-02-08)",
  30.            "author": {
  31.                "@type": "Person",
  32.                "name": "Dr. Deborah Sanchez",
  33.                "affiliation": {
  34.                    "@type": "Organization",
  35.                    "name": "mit-edu.top"
  36.                },
  37.                "url": "https://blog-049165743390.mit-edu.top/post/5816290473"
  38.            },
  39.            "datePublished": "2025-02-08T07:46:01Z",
  40.            "image": "https://x.mit-edu.top/static/images/post/13.jpg",
  41.            "journal": {
  42.                "@type": "Periodical",
  43.                "name": "mit-edu.top",
  44.                "issn": "10.1069/028256581303"
  45.            },
  46.            "publisher": {
  47.                "@type": "Organization",
  48.                "name": "mit-edu.top",
  49.                "url": "https://blog-049165743390.mit-edu.top"
  50.            },
  51.            "doi": "028256581303",
  52.            "abstract": "The Use of Gamification to Promote Environmental Stewardship #028256581303 (2025-02-08)",
  53.            "citation": {
  54.                "@type": "CreativeWork",
  55.                "name": "The Use of Gamification to Promote Environmental Stewardship",
  56.                "author": "Dr. Deborah Sanchez",
  57.                "datePublished": "2025-02-08T07:46:01Z",
  58.                "url": "https://blog-049165743390.mit-edu.top/post/5816290473"
  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-049165743390.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="The Use of Gamification to Promote Environmental Stewardship" title="The Use of Gamification to Promote Environmental Stewardship" class="author-pic img-fluid rounded-circle mx-auto">
  92.                    </div>
  93.                    <span class="d-block text-center">Deborah Sanchez</span>
  94.                    <span class="date d-block text-center small text-uppercase text-black-50 mb-5">2025-02-08</span>
  95.                    <h2 class="heading text-center">The Use of Gamification to Promote Environmental Stewardship</h2>
  96.                    <p class="lead mb-4 text-center">Thanks to Deborah Sanchez for contributing the article "The Use of Gamification to Promote Environmental Stewardship".
  97.                    </p>
  98.                    <img src="https://x.mit-edu.top/static/images/post/13.jpg" alt="The Use of Gamification to Promote Environmental Stewardship" title="The Use of Gamification to Promote Environmental Stewardship" class="img-fluid rounded mb-4 lazyload">
  99.                    <p>Game streaming platforms like Twitch, YouTube Gaming, and Mixer have revolutionized how gamers consume and interact with gaming content, turning everyday players into content creators, influencers, and entertainers. Livestreamed gameplay, interactive chats, and community engagement redefine the gaming experience, transforming passive consumption into dynamic, participatory entertainment.</p>
  100. <p>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>
  101. <p>This research explores the evolution of game monetization models in mobile games, with a focus on player preferences and developer strategies over time. By examining historical data and trends from the mobile gaming industry, the study identifies key shifts in monetization practices, such as the transition from premium models to free-to-play with in-app purchases (IAP), subscription services, and ad-based monetization. The research also investigates how these shifts have impacted player behavior, including spending habits, game retention, and perceptions of value. Drawing on theories of consumer behavior, the paper discusses the relationship between monetization models and player satisfaction, providing insights into how developers can balance profitability with user experience while maintaining ethical standards.</p>
  102. <p>The fusion of gaming and storytelling has birthed narrative-driven masterpieces that transport players on epic journeys filled with rich characters, moral dilemmas, and immersive worlds. Role-playing games (RPGs), interactive dramas, and story-driven adventures weave intricate narratives that resonate with players on emotional, intellectual, and narrative levels, blurring the line between gaming and literature.</p>
  103. <p>This systematic review examines existing literature on the effects of mobile gaming on mental health, identifying both beneficial and detrimental outcomes. It provides evidence-based recommendations for stakeholders in the gaming industry and healthcare sectors.</p>
  104.  
  105.                    <p>
  106.                    <a href="/redirect/?url=https://blog-049165743390.mit-edu.top/post/5816290473" 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://847582366394-edu.iliiili.com/" target="_blank" class="custom-link">External link</a>
  114. <a href="https://736253355361-edu.digwow.net/" target="_blank" class="custom-link">External link</a>
  115. <a href="https://338867242090-edu.free-giftcodes.com/" target="_blank" class="custom-link">External link</a>
  116. <a href="https://226856230855-edu.gifthub.com.ru/" target="_blank" class="custom-link">External link</a>
  117. <a href="https://190727851647-gov.iliiili.com/" target="_blank" class="custom-link">External link</a>
  118. <a href="https://461670693379-gov.digwow.net/" target="_blank" class="custom-link">External link</a>
  119. <a href="https://903098518681-gov.free-giftcodes.com/" target="_blank" class="custom-link">External link</a>
  120. <a href="https://366431177244-gov.gifthub.com.ru/" target="_blank" class="custom-link">External link</a>
  121. <a href="https://314641642941-gov-edu.iliiili.com/" target="_blank" class="custom-link">External link</a>
  122. <a href="https://802660707440-gov-edu.digwow.net/" target="_blank" class="custom-link">External link</a>
  123. <a href="https://568392823298-gov-edu.free-giftcodes.com/" target="_blank" class="custom-link">External link</a>
  124. <a href="https://453648828095-gov-edu.gifthub.com.ru/" target="_blank" class="custom-link">External link</a>
  125. <a href="https://075710876715-edu.iliiili.com/?url=https://blog-049165743390.mit-edu.top/post/5816290473" target="_blank" class="custom-link">External link</a>
  126. <a href="https://098427273647-edu.digwow.net/?url=https://blog-049165743390.mit-edu.top/post/5816290473" target="_blank" class="custom-link">External link</a>
  127. <a href="https://420329936418-edu.free-giftcodes.com/?url=https://blog-049165743390.mit-edu.top/post/5816290473" target="_blank" class="custom-link">External link</a>
  128. <a href="https://505177777619-edu.gifthub.com.ru/?url=https://blog-049165743390.mit-edu.top/post/5816290473" target="_blank" class="custom-link">External link</a>
  129. <a href="https://447711564507-gov.iliiili.com/?url=https://blog-049165743390.mit-edu.top/post/5816290473" target="_blank" class="custom-link">External link</a>
  130. <a href="https://590142092610-gov.digwow.net/?url=https://blog-049165743390.mit-edu.top/post/5816290473" target="_blank" class="custom-link">External link</a>
  131. <a href="https://397059094766-gov.free-giftcodes.com/?url=https://blog-049165743390.mit-edu.top/post/5816290473" target="_blank" class="custom-link">External link</a>
  132. <a href="https://912372021145-gov.gifthub.com.ru/?url=https://blog-049165743390.mit-edu.top/post/5816290473" target="_blank" class="custom-link">External link</a>
  133. <a href="https://link.naver.com/bridge?345506535331&amp;url=https://blog-049165743390.mit-edu.top/post/5816290473" target="_blank" class="custom-link">External link</a>
  134. <a href="https://link.naver.com/bridge?330817409647&amp;url=https://naver330817409647-edu.digwow.net" target="_blank" class="custom-link">External link</a>
  135. <a href="https://link.naver.com/bridge?959163797257&amp;url=https://naver959163797257-edu.iliiili.com" target="_blank" class="custom-link">External link</a>
  136. <a href="https://link.naver.com/bridge?911444688760&amp;url=https://naver911444688760-edu.1717173.xyz" target="_blank" class="custom-link">External link</a>
  137. <a href="https://link.naver.com/bridge?401475160076&amp;url=https://naver401475160076-edu.gifthub.com.ru" target="_blank" class="custom-link">External link</a>
  138. <a href="https://link.naver.com/bridge?456171962017&amp;url=https://naver456171962017-gov.digwow.net" target="_blank" class="custom-link">External link</a>
  139. <a href="https://link.naver.com/bridge?575452593640&amp;url=https://naver575452593640-gov.iliiili.com" target="_blank" class="custom-link">External link</a>
  140. <a href="https://link.naver.com/bridge?267275910638&amp;url=https://naver267275910638-gov.1717173.xyz" target="_blank" class="custom-link">External link</a>
  141. <a href="https://link.naver.com/bridge?735046804449&amp;url=https://naver735046804449-gov.gifthub.com.ru" target="_blank" class="custom-link">External link</a>
  142. <a href="https://link.naver.com/bridge?609963080717&amp;url=https://naver609963080717-gov-edu.digwow.net" target="_blank" class="custom-link">External link</a>
  143. <a href="https://link.naver.com/bridge?318371154669&amp;url=https://naver318371154669-gov-edu.iliiili.com" target="_blank" class="custom-link">External link</a>
  144. <a href="https://link.naver.com/bridge?349884754750&amp;url=https://naver349884754750-gov-edu.1717173.xyz" target="_blank" class="custom-link">External link</a>
  145. <a href="https://link.naver.com/bridge?159130862609&amp;url=https://naver159130862609-gov-edu.gifthub.com.ru" target="_blank" class="custom-link">External link</a>
  146. <a href="https://blog-824390225113.gifthub.news/" target="_blank" class="custom-link">External link</a>
  147. <a href="https://blog-589064070083.jp-edu.sbs/" target="_blank" class="custom-link">External link</a>
  148. <a href="https://blog-170330222751.kr-edu.sbs/" target="_blank" class="custom-link">External link</a>
  149. <a href="https://blog-884305764660.krlinkedin.sbs/" target="_blank" class="custom-link">External link</a>
  150. <a href="https://blog-178176583527.mit-edu.sbs/" target="_blank" class="custom-link">External link</a>
  151. <a href="https://blog-649825003534.mit-edu.buzz/" target="_blank" class="custom-link">External link</a>
  152. <a href="https://blog-110586693411.mit-edu.tech/" target="_blank" class="custom-link">External link</a>
  153. <a href="https://blog-169521286279.mit-edu.site/" target="_blank" class="custom-link">External link</a>
  154. <a href="https://blog-889233645693.mit-edu.top/" target="_blank" class="custom-link">External link</a>
  155. <a href="https://blog-362604811863.usa-gov.top/" target="_blank" class="custom-link">External link</a>
  156. <a href="https://research-091629507520.mit-edu.pp.ua/?url=https://blog-049165743390.mit-edu.top/post/5816290473" target="_blank" class="custom-link">External link</a>
  157. <a href="https://research-995455791051.harvard-edu.pp.ua/?url=https://blog-049165743390.mit-edu.top/post/5816290473" target="_blank" class="custom-link">External link</a>
  158. <a href="https://research-443520820092.stanford-edu.pp.ua/?url=https://blog-049165743390.mit-edu.top/post/5816290473" target="_blank" class="custom-link">External link</a>
  159. <a href="https://research-043705894330.cambridge-edu.pp.ua/?url=https://blog-049165743390.mit-edu.top/post/5816290473" target="_blank" class="custom-link">External link</a>
  160. <a href="https://research-819915159511.berkeley-edu.pp.ua/?url=https://blog-049165743390.mit-edu.top/post/5816290473" target="_blank" class="custom-link">External link</a>
  161. <a href="https://research-504613818198.oxford-edu.pp.ua/?url=https://blog-049165743390.mit-edu.top/post/5816290473" target="_blank" class="custom-link">External link</a>
  162. <a href="https://research-778201292284-edu.wwv.pp.ua/?url=https://blog-049165743390.mit-edu.top/post/5816290473" target="_blank" class="custom-link">External link</a>
  163. <a href="https://research-709751911372-edu.sean.pp.ua/?url=https://blog-049165743390.mit-edu.top/post/5816290473" target="_blank" class="custom-link">External link</a>
  164. <a href="https://research-664483350171-edu.line.pp.ua/?url=https://blog-049165743390.mit-edu.top/post/5816290473" 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-049165743390.mit-edu.top/post/8461905327">
  184.                            <img src="https://x.mit-edu.top/static/images/post/13.jpg" alt="Federated Learning for Personalized Game Difficulty Adjustment in Mobile Platforms" title="Federated Learning for Personalized Game Difficulty Adjustment in Mobile Platforms" class="img-fluid lazyload">
  185.                            </a>
  186.                        </div>
  187.                        <div class="content">
  188.                            <div class="post-meta mb-3">
  189.                                <a href="https://blog-8461905327.mit-edu.top/post/8461905327/" target="_blank">
  190.                                <span class="date">2025-02-08</span>
  191.                                </a>
  192.                            </div>
  193.                            <h2 class="heading"><a href="https://blog-049165743390.mit-edu.top/post/8461905327">Federated Learning for Personalized Game Difficulty Adjustment in Mobile Platforms</a></h2>
  194.                            <p class="info">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>
  195.                            <a href="https://blog-049165743390.mit-edu.top/post/8461905327" 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="Federated Learning for Personalized Game Difficulty Adjustment in Mobile Platforms" title="Federated Learning for Personalized Game Difficulty Adjustment in Mobile Platforms" class="lazyload">
  198.                                </div>
  199.                                <div class="text">
  200.                                    <strong>Eric Howard</strong>
  201.                                    <span>2025-02-08 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-049165743390.mit-edu.top/post/4978162053">
  211.                            <img src="https://x.mit-edu.top/static/images/post/3.jpg" alt="Neural Approximation for Real-Time Physics Simulation in Mobile Games" title="Neural Approximation for Real-Time Physics Simulation in Mobile Games" class="img-fluid lazyload">
  212.                            </a>
  213.                        </div>
  214.                        <div class="content">
  215.                            <div class="post-meta mb-3">
  216.                                <a href="https://blog-4978162053.mit-edu.top/post/4978162053/" target="_blank">
  217.                                <span class="date">2025-02-08</span>
  218.                                </a>
  219.                            </div>
  220.                            <h2 class="heading"><a href="https://blog-049165743390.mit-edu.top/post/4978162053">Neural Approximation for Real-Time Physics Simulation in Mobile Games</a></h2>
  221.                            <p class="info">This research explores the role of reward systems and progression mechanics in mobile games and their impact on long-term player retention. The study examines how rewards such as achievements, virtual goods, and experience points are designed to keep players engaged over extended periods, addressing the challenges of player churn. Drawing on theories of motivation, reinforcement schedules, and behavioral conditioning, the paper investigates how different reward structures, such as intermittent reinforcement and variable rewards, influence player behavior and retention rates. The research also considers how developers can balance reward-driven engagement with the need for game content variety and novelty to sustain player interest.</p>
  222.                            <a href="https://blog-049165743390.mit-edu.top/post/4978162053" class="post-author d-flex align-items-center">
  223.                                <div class="author-pic">
  224.                                    <img src="https://x.mit-edu.top/static/images/user/19.jpg" alt="Neural Approximation for Real-Time Physics Simulation in Mobile Games" title="Neural Approximation for Real-Time Physics Simulation in Mobile Games" class="lazyload">
  225.                                </div>
  226.                                <div class="text">
  227.                                    <strong>Alice Coleman</strong>
  228.                                    <span>2025-02-08 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-049165743390.mit-edu.top/post/1670328495">
  238.                            <img src="https://x.mit-edu.top/static/images/post/1.jpg" alt="The Role of Multi-Agent Systems in Simulating Complex Game Ecosystems" title="The Role of Multi-Agent Systems in Simulating Complex Game Ecosystems" class="img-fluid lazyload">
  239.                            </a>
  240.                        </div>
  241.                        <div class="content">
  242.                            <div class="post-meta mb-3">
  243.                                <a href="https://blog-1670328495.mit-edu.top/post/1670328495/" target="_blank">
  244.                                <span class="date">2025-02-08</span>
  245.                                </a>
  246.                            </div>
  247.                            <h2 class="heading"><a href="https://blog-049165743390.mit-edu.top/post/1670328495">The Role of Multi-Agent Systems in Simulating Complex Game Ecosystems</a></h2>
  248.                            <p class="info">This study examines how mobile games can be used as tools for promoting environmental awareness and sustainability. It investigates game mechanics that encourage players to engage in pro-environmental behaviors, such as resource conservation and eco-friendly practices. The paper highlights examples of games that address climate change, conservation, and environmental education, offering insights into how games can influence attitudes and behaviors related to sustainability.</p>
  249.                            <a href="https://blog-049165743390.mit-edu.top/post/1670328495" class="post-author d-flex align-items-center">
  250.                                <div class="author-pic">
  251.                                    <img src="https://x.mit-edu.top/static/images/user/16.jpg" alt="The Role of Multi-Agent Systems in Simulating Complex Game Ecosystems" title="The Role of Multi-Agent Systems in Simulating Complex Game Ecosystems" class="lazyload">
  252.                                </div>
  253.                                <div class="text">
  254.                                    <strong>Patrick Russell</strong>
  255.                                    <span>2025-02-08 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