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Validating Global Gridded Population Datasets Using Dam Resettlement Data

2025-03-21
Validating Global Gridded Population Datasets Using Dam Resettlement Data

Researchers assessed the accuracy of five global gridded population datasets (GWP, GRUMP, GHS-POP, LandScan, and WorldPop) in predicting rural populations using data from the International Commission on Large Dams (ICOLD) database. They spatially overlaid resettlement data from 307 reservoirs with the population datasets, revealing systematic biases. The study improved prediction accuracy by adjusting for area biases in GeoDAR reservoir polygons. Results showed that while biases exist, these datasets offer reasonable accuracy in predicting rural populations, providing valuable insights for future research.

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(www.nature.com)
Tech population data dams dam resettlement

Framework-Free Web Development: A Guide to Vanilla JS

2025-05-11

This site provides a comprehensive guide to building websites and web applications using only an editor, a browser, and web standards—no build tools or frameworks required. It dives into using Web Components as fundamental building blocks, leveraging modern CSS capabilities, and creating web projects and single-page applications without build tools, frameworks, or server-side logic. Targeted at developers already familiar with HTML, CSS, and JavaScript, this tutorial champions a simpler, more maintainable approach to web development, addressing the complexity and maintenance overhead often associated with modern frameworks.

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(plainvanillaweb.com)
Development vanilla JS modern CSS

From Transistor to Browser: Building a Computer System from Scratch

2025-05-06
From Transistor to Browser: Building a Computer System from Scratch

This course takes a radical approach to computer science education. Students will build a complete computer system from the ground up, starting with Verilog to blink an LED and culminating in a simple operating system and text-based web browser. The curriculum covers FPGA programming, compiler design, and OS development, culminating in running the system on custom-built hardware. This challenging yet rewarding journey is perfect for those seeking a deep, first-principles understanding of computing.

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(github.com)
Hardware computer systems

Pi: Blazing Fast and Accurate App Metric AI

2025-05-22
Pi: Blazing Fast and Accurate App Metric AI

Pi is a revolutionary AI tool that automatically identifies and measures key application metrics. Simply provide app prompts, PRDs, user feedback, or have a chat with it, and Pi will quickly help you determine the best calibrated metrics for your application. Powered by the Pi Scorer foundation model, it outperforms Deepseek and GPT 4.1 in accuracy while maintaining the size and speed of GPT Mini and Gemini Flash, scoring 20+ custom dimensions in under 100 milliseconds. Furthermore, Pi seamlessly integrates into your AI stack and existing tools like Google Spreadsheets, Promptfoo, and CrewAI for offline evaluations, online observability, training data quality, model optimization, agent control flows, and more.

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(withpi.ai)
AI App Metrics

Flattening ASTs: Performance Wins in Compiler Data Structures

2025-01-10
Flattening ASTs: Performance Wins in Compiler Data Structures

This article explores performance optimization of compiler data structures by flattening Abstract Syntax Trees (ASTs). The author builds a simple arithmetic expression interpreter, implementing it both with traditional pointers and a flattened array approach, comparing their performance. Results show a 2.4x speedup with the flattened version, attributed to improved memory locality, smaller reference sizes, and cheaper allocation/deallocation. Flattening also simplifies memory management and facilitates deduplication. The article further presents an iterative interpreter exploiting the flattened representation for additional performance gains.

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(www.cs.cornell.edu)
Development data structures performance improvement

C++20 Modules: Compile Time Improvements and Practical Experiences

2025-09-11

This article shares the author's practical experience using C++20 modules, covering build system choices (Bazel, XMake, Build2, etc.), compile time improvements (25%-45%), and differences from PCH. The author also discusses suitable scenarios for C++20 modules, costs (code refactoring, compiler stability, code completion support, etc.), module wrappers (export-using and extern "C++" styles), and techniques for mixing import and #include. The article concludes with future improvement directions for C++20 modules, such as improving build systems, enhancing code intelligence, resolving cross-platform issues, and highlighting AI's potential in module conversion tool development.

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(chuanqixu9.github.io)
Development Compile Optimization

Go Protobuf's New Opaque API Improves Performance and Safety

2024-12-16

The Go team released a new Opaque API for Go Protobuf, coexisting with the existing Open Struct API. This new API decouples generated code from its underlying memory representation, leading to performance improvements, reduced memory allocations, and enabling optimizations like lazy decoding. By hiding struct fields and accessing them only through accessor methods, it prevents pointer-related bugs and accidental sharing. Migration involves enabling the Hybrid API, using the `open2opaque` tool, and then switching to the Opaque API. The existing Open Struct API remains supported.

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(go.dev)
Development

DrawAFish.com: A Security Disaster Caused by Silly Mistakes

2025-08-05
DrawAFish.com: A Security Disaster Caused by Silly Mistakes

DrawAFish.com, a website that briefly hit the top of Hacker News, experienced a security disaster due to a series of amateur mistakes. An outdated six-digit admin password exposed in a past data breach, an unauthenticated username update API, and a JWT not tied to a specific user, allowed malicious actors to vandalize the site within hours. Usernames were changed to slurs and fish images were replaced. The author resolved the issue by restoring from backups and patching vulnerabilities, reflecting on the balance between rapid development and security.

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(aldenhallak.com)
Development rapid development

Open WebUI Adds Branding Protection to License

2025-05-06

Open WebUI, an independent open-source AI project, has added a branding protection clause to its BSD-3 license starting with version 0.6.6. This follows a surge in bad actors taking the project, removing branding, and selling it commercially. The new clause doesn't affect legitimate users but prevents those who misrepresent the project and profit without contributing. It allows for modifications and redistribution but mandates clear attribution unless specific conditions are met (e.g., under 50 users, contributor with permission, or enterprise license). Open WebUI remains largely open-source, aiming to balance community spirit with project sustainability.

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(docs.openwebui.com)
Development branding protection

Scholium: Your AI-Powered Research Assistant

2025-03-05
Scholium: Your AI-Powered Research Assistant

Scholium is an AI agent designed to revolutionize academic research. Tired of sifting through irrelevant results? Scholium quickly finds and cites relevant scholarly papers using just a query. Currently accessing the arXiv database (with plans to expand to PubMed and academic journals), it summarizes papers and provides citations in five different styles. A community forum allows users to rate, discuss, and share papers, making Scholium a powerful tool for efficient research.

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(github.com)
AI Research Citation

Cogitator: A Python Toolkit for Chain-of-Thought Prompting

2025-05-19
Cogitator: A Python Toolkit for Chain-of-Thought Prompting

Cogitator is a powerful Python toolkit for experimenting with and utilizing chain-of-thought (CoT) prompting methods in large language models (LLMs). CoT prompting enhances LLM performance on complex tasks (like question-answering, reasoning, and problem-solving) by guiding models to generate intermediate reasoning steps before reaching the final answer. It also improves LLM interpretability by offering insights into the model's reasoning process. This toolkit simplifies the use of popular CoT strategies and frameworks for research or integration into AI applications. It includes a customizable and extensible benchmarking framework to evaluate the performance of different CoT strategies on various datasets.

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(github.com)
Development python toolkit

Pica: Open-Source Catalyst for Autonomous AI

2025-01-21

Pica is an ambitious open-source project aiming to build a fully autonomous AI system. Unlike existing AI models trained for specific tasks, Pica strives for general-purpose AI capable of learning and adapting to various tasks. Its modular design allows researchers and developers to contribute and improve its components. Pica's success could revolutionize AI, potentially leading to more powerful, flexible, and general AI systems, unlocking new possibilities across diverse applications while also presenting new challenges and ethical considerations.

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(www.picaos.com)
AI open-source AI autonomous AI general-purpose AI

Netflix's Cloud Gaming Push: Co-op and Party Games on the Way

2025-01-24
Netflix's Cloud Gaming Push: Co-op and Party Games on the Way

Netflix is expanding its cloud gaming efforts, planning to launch a service featuring co-op and party games streamed directly to TVs. Co-CEO Greg Peters described this as a successor to family board game nights or an evolution of TV game shows. While a release date hasn't been announced, Netflix has been beta testing cloud gaming since 2023 and plans to continue investment. The company will also focus on narrative games based on Netflix IP.

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(www.theverge.com)
Game multiplayer games

American Football's Crisis: Declining Participation and Health Concerns

2025-06-24
American Football's Crisis: Declining Participation and Health Concerns

American football faces a serious crisis: declining youth participation, largely driven by parental concerns over player health. Despite the NFL taking action in response to numerous clinical studies highlighting health risks, the article repeatedly emphasizes that 'something is terribly wrong,' suggesting the sport needs fundamental changes to secure its future.

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(www.sbnation.com)
Game American Football Health Risks Youth Participation

ts-ssh: A Powerful Tailscale SSH/SCP CLI Tool

2025-06-20
ts-ssh: A Powerful Tailscale SSH/SCP CLI Tool

ts-ssh is a streamlined command-line SSH and SCP client leveraging the Tailscale network. It offers powerful multi-host operations, batch command execution, and true tmux integration—all without requiring the full Tailscale daemon. Perfect for DevOps teams needing fast, reliable SSH access across their Tailscale infrastructure, ts-ssh supports multiple authentication methods, interactive SSH sessions, secure host key verification, and direct SCP transfers. Its advanced multi-host capabilities include batch command execution, concurrent command execution, and multi-host file distribution. Cross-platform compatible and offering multiple language support, ts-ssh is a must-have for efficient network management.

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(github.com)
Development

GitHub Actions: Why I'm Reconsidering

2025-01-20

This post details the frustrations of using GitHub Actions for CI/CD in a large monorepo with 15 engineers constantly pushing to the main branch. The author highlights key issues: flawed 'required checks' for pull requests in a monorepo setup, poor workflow reusability and YAML management, lack of local development environment, and GitHub's unresponsive attitude towards user feedback. The conclusion advocates exploring alternative CI/CD platforms like GitLab, Jenkins, or even Dagger for better solutions.

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(ninkovic.dev)
Development

Retro DIY Home Computer: 4x the Power of a C64!

2025-01-22
Retro DIY Home Computer: 4x the Power of a C64!

A developer built a retro home computer using just 61 74HCxx logic ICs, 2 6C1008 SRAM chips, and 4 39SF0x0 FLASH chips – boasting 4x the processing power of a Commodore C64! The Minimal 64x4 features 64KB RAM, a 512KB FLASH SSD, VGA output, and a PS/2 port. It has 256 instructions and a complete toolchain including an OS, text editor, assembler, and a Python-like interpreter. The open-source project includes classic games like Tetris and Space Invaders.

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(github.com)
Hardware

Clear as Crystal: Tips for Mathematically Sound Handwriting

2025-02-08

This blog post offers essential tips for improving the clarity of your mathematical handwriting. The author stresses the importance of distinguishing between similar-looking letters and symbols, providing specific examples and illustrations on how to write lowercase and uppercase Roman letters, digits, and Greek letters to avoid ambiguity. Techniques include differentiating lowercase 'l' from '1', 'p' from rho, 'q' from 9, and 'u' from 'v', among others. The guide also includes detailed advice on writing Greek letters to prevent confusion with Roman letters or other Greek symbols. This post is invaluable for students and professionals alike who want to ensure their mathematical writing is easily understood.

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(johnkerl.org)
Development mathematical handwriting clarity disambiguation

Marshall Amplification Acquired by HSG in a €1.1 Billion Deal

2025-01-24
Marshall Amplification Acquired by HSG in a €1.1 Billion Deal

Funds managed by HSG have acquired a majority stake in Marshall Amplification, the iconic British audio brand, in a deal valuing the company at €1.1 billion. The Marshall family retains a significant minority stake, and will work with HSG to further expand the brand's global reach. HSG plans to leverage its expertise in digital channels and supply chain optimization to boost Marshall's growth. This acquisition follows a period of strong growth for Marshall, with revenue more than doubling between 2020 and 2024, reaching approximately €400 million.

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(news.cision.com)
Tech

Graceful Error Handling in Puppeteer with Buglestack Reporting

2025-05-16
Graceful Error Handling in Puppeteer with Buglestack Reporting

This code snippet demonstrates how to use Puppeteer to scrape Google search results and gracefully handle potential errors. Upon encountering an error, the code captures error details including the URL, a screenshot, HTML content, metadata, and the error stack, and sends this information to Buglestack for error reporting. This allows developers to quickly identify and fix issues, improving code robustness.

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(buglesstack.com)
Development

Flight Tracking's Dirty Little Secrets: Debunking Aviation Data Myths

2025-06-07
Flight Tracking's Dirty Little Secrets: Debunking Aviation Data Myths

FlightAware engineers discovered that aviation data is far messier than one might assume. They list numerous false assumptions about flights, airports, airlines, and ADS-B data – things like flights always departing on time, flight numbers never changing, and airport information always being accurate. The breakdown of these assumptions highlights the challenges and importance of FlightAware's flight tracking engine, Hyperfeed, in handling unusual situations and providing a consistent data feed.

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(flightaware.engineering)
Tech aviation data

The Math Behind the Perfect Onion Dice

2025-08-17
The Math Behind the Perfect Onion Dice

Millions of YouTube views prove it: dicing an onion perfectly is a common quest. This article dives into the optimal onion-cutting technique, using mathematical modeling and standard deviation calculations to reveal that radial cuts, aimed at approximately 96% of the onion's radius, yield the most uniform pieces, outperforming vertical cuts. While perfect uniformity might not drastically improve your cooking, the study offers a fascinating example of applying mathematics to everyday problems.

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(pudding.cool)
Misc onion optimal cutting technique

Revolutionizing Similarity Measurement: Tversky Neural Networks

2025-08-17
Revolutionizing Similarity Measurement: Tversky Neural Networks

This paper introduces a novel neural network architecture based on Tversky similarity, challenging the prevalent use of dot product or cosine similarity in deep learning. It elegantly transforms the traditionally discrete set operations of the Tversky model into differentiable functions, enabling training within the deep learning framework. Experiments demonstrate significant performance improvements in image recognition and language modeling, alongside enhanced interpretability, allowing for intuitive explanations of model decisions. The core innovation lies in a differentiable Tversky similarity function that considers both common and distinctive features, aligning better with human perception of similarity.

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(gonzoml.substack.com)
AI Explainable AI

One Million Chessboards: A Single-Process Server Handling Millions of Concurrent Chess Games

2025-07-16
One Million Chessboards: A Single-Process Server Handling Millions of Concurrent Chess Games

The author built "One Million Chessboards," an online multiplayer chess game where a 1000x1000 grid of chessboards forms a single global game. Every move instantly affects the entire board, with no turns and inter-board movement allowed. Running on a single Go process, the game attracted over 150,000 players in 10 days, processing over 15,000,000 moves and hundreds of millions of queries. The article details the game's system design, data distribution, protocol optimizations, optimistic locking, and rollback mechanisms. The author shares lessons learned, including performance optimization, architectural choices, and balancing game scale with player experience. The post concludes with reflections on design flaws, such as the lack of an awe-inspiring scale, and future game development plans.

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(eieio.games)
Game High Concurrency System Design

ArcaOS 5.1.1 Released: A Privacy-Focused OS/2 Upgrade

2025-02-22
ArcaOS 5.1.1 Released: A Privacy-Focused OS/2 Upgrade

Arca Noae has released ArcaOS 5.1.1, supporting UEFI and GPT disk layouts for installation on a wide range of modern hardware. This release is free for existing ArcaOS 5.1 subscribers and offers multiple language options. Upgrades are available at a discount for existing users. ArcaOS prioritizes user privacy, avoiding tracking online activity and supporting low-spec hardware, making it ideal for users valuing freedom and privacy.

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(www.arcanoae.com)
Development

My Home, My Server: Reclaiming the Physical Internet

2025-09-16
My Home, My Server: Reclaiming the Physical Internet

The author reminisces about running a speech synthesizer website from their college dorm room in 2000, highlighting the magical feeling of someone remotely accessing their server. Now, they aim to recreate this physical connection, exploring the feasibility of building a reliable and secure home website. The ultimate goal is to blend the virtual and physical worlds, creating a more interactive and personalized online experience. The article prompts reflection on the nature of the internet, user agency, and the future direction of online interactions.

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(interconnected.org)
Development physical internet

Pluto's Largest Moon, Charon, Formed Via a 'Kiss and Capture' Event

2025-01-20
Pluto's Largest Moon, Charon, Formed Via a 'Kiss and Capture' Event

A new study proposes a novel 'kiss and capture' mechanism for the formation of Charon, Pluto's largest moon, challenging the previous catastrophic impact theory. Billions of years ago, Pluto and Charon collided in the outer solar system, briefly merging into a spinning dumbbell shape before separating, yet remaining gravitationally bound. This collision didn't destroy either body, preserving their structural integrity. The theory, incorporating the strength of Pluto and Charon's materials, was validated by computer simulations, accurately predicting the current binary system's orbit. This discovery challenges conventional understanding of planetary collisions and offers a new perspective on the formation of other binary systems.

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(www.smithsonianmag.com)
Tech Pluto Charon Planetary Collision

Universities Must Resist the AI Onslaught

2025-06-23

A seminar at Goldsmiths Centre for Philosophy and Critical Thought explored AI's impact on higher education. The speaker argued that AI isn't futuristic sci-fi, but a product of neoliberal education systems. AI's operation relies on massive data and computing power, its inner workings opaque and unpredictable. The speaker called for universities to resist AI's overreach, impacting not just academic integrity but critical thinking and social equity. He advocated using Ivan Illich's concept of 'convivial tools' to critically examine AI and establish workers'/people's councils to ensure technological social determination, preventing AI from becoming a tool of control and oppression.

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(danmcquillan.org)
Tech

Voice-Pro: The Ultimate AI Voice Conversion and Multilingual Translation Tool

2025-01-27
Voice-Pro: The Ultimate AI Voice Conversion and Multilingual Translation Tool

Voice-Pro is a cutting-edge AI-powered web application designed to revolutionize multimedia content processing. It offers an all-in-one solution for content creators, researchers, and multilingual communication professionals, integrating YouTube video downloading, voice separation, speech recognition, translation, and text-to-speech. Key features include Whisper, Faster-Whisper, and Whisper-Timestamped speech recognition; F5-TTS and E2-TTS for zero-shot voice cloning; real-time translation across 100+ languages; and AI cover creation (RVC technology). Voice-Pro provides easy installation and updates for Windows users.

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(github.com)
Development AI voice conversion multilingual translation multimedia processing
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