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This is a web feed, also known as an Atom feed. Subscribe by copying the URL from the address bar into your newsreader. Visit About Feeds to learn more and get started. It's free.Visit websiteRecent postsUpdated on $DATEdate~/osc~/oscÓscar is data scientist and clinical psychologist aiming to leverage his positive impact in the world.Zola2026-03-11T00:00:00+00:00https://osc.garden/atom.xmlDeveloping a Web App to Generate Private yet Shareable Diffs2026-03-11T00:00:00+00:002026-03-11T00:00:00+00:00Óscar Fernándezhttps://osc.garden/blog/kawari-diff-in-the-url/I built a web app to generate private, shareable diffs by storing the diff in the URL.Creating Like Buttons for the Small Web2025-07-27T00:00:00+00:002025-07-27T00:00:00+00:00Óscar Fernándezhttps://osc.garden/blog/iine-small-web-like-buttons/Building a privacy-first, self-hostable like button system using PostgreSQL and vanilla JavaScript. Featuring progressive enhancement and zero tracking.I Fixed My Sleep Schedule With Code2025-02-02T00:00:00+00:002025-02-08T00:00:00+00:00Óscar Fernándezhttps://osc.garden/blog/nemui-sleep-schedule-planner/I copied Apple's UI/UX to gradually adjust my sleep schedule while handling every time zone quirk in the world (including that one island with 30-minute DST).Condensing Media for Language Learning with shuku2024-12-24T00:00:00+00:002024-12-26T00:00:00+00:00Óscar Fernándezhttps://osc.garden/blog/shuku-condensed-media-language-learning/I've built a tool that turns a 3-hour film into a 45-minute language learning resource. Keep the dialogue, skip the rest!Building a Minimal Time Management Web App2024-12-04T00:00:00+00:002024-12-04T00:00:00+00:00Óscar Fernándezhttps://osc.garden/blog/zutsu-offline-task-planner-web-app/I built a local-first web app to plan my study sessions. Featuring utilities like past activity visualisation or a pomodoro timer.Building a Progressive Web App To Practice Japanese Numbers2024-11-05T00:00:00+00:002024-11-05T00:00:00+00:00Óscar Fernándezhttps://osc.garden/blog/ramu-japanese-numbers-practice-web-app/I built a web app to practice reading and listening to Japanese numbers. In the process, I learnt about testing vanilla JavaScript, creating PWAs, accessibility, browser inconsistencies, and automatic cache busting without frameworks.Learning Japanese Through Music: An Analysis of Ichiko Aoba's Lyrics2024-06-20T00:00:00+00:002024-11-01T00:00:00+00:00Óscar Fernándezhttps://osc.garden/blog/ichiko-aoba-lyrics-japanese-morphology/Exploring Ichiko Aoba's lyrics. Featuring morphological analysis, word clouds, and a sprinkle of 言霊 (kotodama) magic.Returning2024-05-27T00:00:00+00:002024-06-08T00:00:00+00:00Óscar Fernándezhttps://osc.garden/blog/nostalgia/Reflecting on nostalgia.Building a Tool To Add Dynamic Content to My GitHub Profile2024-04-30T00:00:00+00:002024-05-23T00:00:00+00:00Óscar Fernándezhttps://osc.garden/blog/doteki-building-a-dynamic-github-profile/How I built dōteki, a plugin-based tool to add dynamic content to GitHub profiles. Inspiration, thought process, and future plans.Notes on Notes: Analysing Seven Years of Music Streaming Data2024-03-15T00:00:00+00:002024-04-18T00:00:00+00:00Óscar Fernándezhttps://osc.garden/blog/data-analysis-music-streaming/From a childhood keyboard to streaming in over 170 countries. An analysis and visualisation of seven years of royalties data to see how my music has been heard, how much Spotify, Apple Music, TikTok, Instagram, etc. really pay per stream, and more.Self-Hosting GoatCounter with an nginx Reverse Proxy and SSL2023-12-14T00:00:00+00:002025-12-26T00:00:00+00:00Óscar Fernándezhttps://osc.garden/blog/self-hosting-goatcounter/How to self-host GoatCounter —a lightweight, privacy-friendly web analytics tool— with an nginx reverse proxy and an SSL certificate.The 8 Most Important Statistical Ideas: Bootstrapping and Simulation-Based Inference2023-11-27T00:00:00+00:002023-11-27T00:00:00+00:00Óscar Fernándezhttps://osc.garden/blog/bootstrapping-and-simulation-based-inference/A dinner party with friends, a vending machine, and magic… Or how bootstrapping allows us to estimate the distribution of almost anything without complicated equations or gathering many samples. Featuring a very cool interactive widget.Nine Illustrated Tips to Get Started with AI Chatbots like ChatGPT2023-11-21T00:00:00+00:002023-11-21T00:00:00+00:00Óscar Fernándezhttps://osc.garden/blog/beginners-guide-to-ai-chatbots/A guide for my parents and beginners alike, introducing the basics of interacting with AI chatbots. Essential tips on privacy, accuracy, and communication techniques.The 8 Most Important Statistical Ideas: Counterfactual Causal Inference2023-10-23T00:00:00+00:002023-11-27T00:00:00+00:00Óscar Fernándezhttps://osc.garden/blog/counterfactual-causal-inference/"Correlation doesn't imply causation". Can counterfactuals help determining cause-and-effect relationships?Transforming My Favourite Quotes into Generative Art2023-10-19T00:00:00+00:002024-07-29T00:00:00+00:00Óscar Fernándezhttps://osc.garden/blog/transforming-quotes-into-generative-art/An experiment with generative artificial intelligence.Automating Link Previews for Zola Sites2023-09-06T00:00:00+00:002024-05-23T00:00:00+00:00Óscar Fernándezhttps://osc.garden/blog/automating-social-media-cards-zola/Developing a bash script to create social media cards for Zola sites.Automatically Updating My Zola Site Using a Webhook2023-08-28T00:00:00+00:002025-02-15T00:00:00+00:00Óscar Fernándezhttps://osc.garden/blog/updating-site-with-webhook/Since this site's files are on GitHub, I thought it would be a nice idea to automatically update it whenever the repository is modified.Zola Git Pre-Commit Hook: Updating Post Dates2023-04-17T00:00:00+00:002024-07-11T00:00:00+00:00Óscar Fernándezhttps://osc.garden/blog/zola-date-git-hook/In order to keep the 'Last updated' field of posts always accurate, I automated its modification with a custom Git pre-commit hook.Resting-State Functional Magnetic Resonance Imaging (rsfMRI) in Attention Deficit Hyperactivity Disorder: Meta-Analysis2021-06-10T00:00:00+00:002021-06-10T00:00:00+00:00Óscar Fernándezhttps://osc.garden/blog/rsfmri-adhd-meta-analysis/My Master's Thesis in General Health Psychology. A comprehensive meta-analysis of whole-brain rsfMRI studies comparing people with attention deficit hyperactivity disorder to neurotypical people.