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NASA JPL Horizons: A Powerful Tool for Exploring the Solar System

2025-01-03

NASA's Jet Propulsion Laboratory's Horizons system is a powerful online service providing precise orbital data and ephemerides for solar system objects. It offers multiple access methods including a web interface, command-line interface, email, and an API. Users can query information on asteroids, comets, planets, satellites, and more, and perform orbital calculations and visualizations. Horizons is a powerful tool for astronomers, aerospace engineers, and space enthusiasts exploring the mysteries of our solar system.

(ssd.jpl.nasa.gov)

Tech Solar System Data

PostgreSQL Anonymizer: Declarative Data Masking for Postgres

2025-01-17

PostgreSQL Anonymizer is a powerful database extension enabling declarative definition of data masking rules directly within the database schema. It supports multiple masking methods including static, dynamic masking, and anonymous dumps, offering various masking functions like randomization, faking, partial scrambling, and custom functions. Designed for anonymization-by-design, it protects sensitive data like PII and commercially sensitive information during development. The extension includes detection functions to suggest columns needing anonymization. Quick start via Docker, complete tutorials, and success stories from organizations like the French Public Finances Directorate General (DGFiP) and bioMérieux are provided.

(postgresql-anonymizer.readthedocs.io)

Development Data Masking Anonymization

Tramway SDK: A Lightweight Game Engine Defying Turbobloat

2025-01-07

Tramway SDK is a lightweight game engine challenging the 'Turbobloat' of mainstream engines like Unity and Godot. Developed over three years, it aims to bring 3D game development to older hardware. Using software rasterization, it eschews the need for a graphics card and runs on 15-year-old hardware, lowering the barrier to entry and reducing e-waste. It ditches node-based systems in favor of entity class inheritance and streamlined coding. Optional editors and whitespace-separated value configuration files simplify the workflow. Tramway SDK also includes an RPG framework, supporting level streaming and Quake/Source style entity interaction for easy open-world RPG creation. While still early in development, its lightweight nature and ease of use hold immense potential.

(racenis.github.io)

Game lightweight low-spec

C++26: Removed and Deprecated Features Roundup

2025-03-20

C++26 is removing or deprecating several features. These include the complete removal of the `std::allocator` typedef deprecated in C++20, and the no-argument overload of `std::basic_string::reserve()`; removal of deprecated Unicode conversion utilities and `std::strtok`; removal of aged `strstreams` and `std::shared_ptr` atomic access APIs; and removal of `std::wstring_convert`. Additionally, `std::is_trivial` is deprecated, with suggestions to use the more precise `is_trivially_XXX` alternatives; and `std::memory_order::consume` is deprecated due to unsatisfactory specification and implementation difficulties. These removals and deprecations aim to improve language safety and efficiency, and clean up outdated functionality.

(www.sandordargo.com)

Development language features deprecation

Decoding METAR, TAF, and Pilot Reports: A Comprehensive Guide

2025-01-07

This article provides a comprehensive guide to decoding METAR (Aviation Routine Weather Report), TAF (Terminal Aerodrome Forecast), and pilot reports. METARs, issued hourly, provide real-time airfield weather conditions; SPECI reports are issued for significant changes. TAFs are issued every few hours and updated as needed. The article meticulously explains the codes and abbreviations within these reports, covering wind, visibility, weather phenomena, cloud cover, temperature, and altimeter settings, with examples and interpretations. Mastering these decoding skills is crucial for pilots to understand their flight environment and ensure safety.

(met.nps.edu)

Tech Aviation Meteorology

Calculator Forensics: Uncovering Chip Design Secrets

2025-01-19

This article introduces 'calculator forensics,' a technique that analyzes the results of embedded algorithms in calculators to identify the origins and evolution of different calculator chip designs. The author devised a standardized algorithm and compiled results from numerous calculators, creating comparison tables to trace the design history and technological lineage of calculator chips. This technique is significant for studying calculator history and chip design, particularly useful when official documentation is scarce, enabling researchers to understand the relationships between different calculators.

(www.rskey.org)

Hardware chip design

Meta's Llama 3.1 Community License: Not Free Software

2025-01-26

The Free Software Foundation (FSF) has released an evaluation concluding that Meta's Llama 3.1 Community License is not a free software license. The license not only denies users their freedoms but also attempts to grant licensors powers that should only be exercised through democratically-elected governments. Furthermore, its application to a machine learning application fails to address inherent software freedom challenges. The FSF urges the free software community to avoid using this license and any software released under it.

(www.fsf.org)

Development

Microsoft Open-Sources Document Database Built on PostgreSQL

2025-01-27

Microsoft Open-Sources Document Database Built on PostgreSQL

In a surprising move, Microsoft has launched an open-source document database platform built on a relational PostgreSQL backend. The fully open-source platform, requiring no commercial licensing fees, suggests using the open-source FerretDB as a front-end. This signifies Microsoft's increased embrace of open source and offers a new option for the NoSQL database community. The database leverages two PostgreSQL extensions: pg_documentdb_core (optimizing BSON) and pg_documentdb_api (implementing CRUD and query operations). FerretDB 2.0 integrates with it, boasting a significant performance boost, with up to 20x speed improvements for certain workloads. This move is poised to challenge existing document databases like MongoDB.

(www.theregister.com)

Development

Batteries Included vs. No Batteries: A Framework Conundrum

2025-07-04

This article explores the trade-offs between 'batteries-included' and 'no-batteries' software frameworks. 'Batteries-included' frameworks, like Express, offer ease of use and high integration, but lack flexibility. 'No-batteries' frameworks, such as Flask, demand more configuration but provide greater control. The author argues that the ideal framework balances both approaches, offering core functionality with plugin extensibility to meet diverse needs. The example of Vim's lazyvim distribution highlights the potential downsides of excessive 'batteries-included' features, leading to bloat.

(mtende.blog)

Development batteries included

Laser Fault Injection on a Budget: RP2350 Edition

2025-01-18

Laser Fault Injection on a Budget: RP2350 Edition

This article details how a custom-built, low-cost laser fault injection platform was used to successfully bypass the secure boot mechanism of Raspberry Pi's RP2350 microcontroller. Using an infrared laser, the platform cleverly circumvented the RP2350's glitch detectors. A single laser pulse injected a fault, altering the boot ROM's instruction flow, ultimately revealing hidden data. The author provides detailed explanations of the platform's hardware design, software architecture, and the attack process, including manufacturing files and source code.

(courk.cc)

Hardware Laser Fault Injection

Open Source Projects Could Monetize SBOM Fragments

2025-02-17

Open Source Projects Could Monetize SBOM Fragments

Scanning source code for licensing information is a laborious and often duplicated effort due to a lack of resource pooling among companies. This article proposes a solution: Open Source projects could sell SBOM fragments (components in CycloneDX or packages in SPDX with accurate licensing details). By sponsoring the project on GitHub, companies would gain access to continuously updated SBOM information, avoiding redundant work and ensuring licensing accuracy.

(www.thomas-huehn.com)

Development Open Source Licensing Software Supply Chain

K-12 School Shooting Database: A Chilling Account

2025-02-23

K-12 School Shooting Database: A Chilling Account

The K-12 School Shooting Database tracks all school shootings in the US, regardless of casualties, time, or day. Data includes gang shootings, domestic violence, shootings at sporting events and after-school activities, suicides, fights escalating to shootings, and accidents. This database aims to document the number of school shootings and the full scope of gun violence on school campuses. All uses must cite the source.

(k12ssdb.org)

Misc school shootings gun violence campus safety

Zero-Downtime PostgreSQL Major Version Upgrade

2025-01-29

Zero-Downtime PostgreSQL Major Version Upgrade

The Instant team shares their experience upgrading PostgreSQL from version 13 to 16 with zero downtime. They tried in-place upgrades and blue-green deployments, but both failed. Their manual approach involved creating a new PostgreSQL 16 replica, gradually switching subscriptions and writes, and cleverly designing an algorithm to ensure zero data loss by briefly pausing new transactions. They encountered challenges like custom function search path issues and sequence data replication problems, sharing valuable lessons learned along the way.

(www.instantdb.com)

Development PostgreSQL upgrade zero downtime database migration

Danish Study Links Diabetes Drug Ozempic to Increased Risk of Severe Eye Condition

2024-12-17

Danish Study Links Diabetes Drug Ozempic to Increased Risk of Severe Eye Condition

Two independent studies from the University of Southern Denmark (SDU) reveal that patients with type 2 diabetes treated with Ozempic have a significantly higher risk of developing non-arteritic anterior ischemic optic neuropathy (NAION), a condition causing severe and permanent vision loss. These large-scale studies, based on Danish registries, found Ozempic more than doubles the risk of NAION. Researchers recommend doctors and patients discuss the benefits and risks of Ozempic, suggesting treatment cessation if NAION is detected in one eye.

(www.sdu.dk)

Tech Type 2 Diabetes NAION

CSS Hover Animation: Clever Use of Inverted Radius Shape

2025-02-02

CSS Hover Animation: Clever Use of Inverted Radius Shape

This article demonstrates a method for creating a cool hover animation effect using CSS. By cleverly combining an inverted radius shape, CSS variables, and `@property`, a smooth reveal animation is achieved where text gradually appears on hover. The code is concise and efficient, leveraging CSS masks and gradients for a visually stunning effect. This is a valuable CSS technique worth learning, suitable for developers with some CSS experience.

(css-tip.com)

Design CSS tricks

From Vinyl to Streaming: A Music Lover's Nostalgic Journey Through Audio Formats

2025-02-18

A seasoned music enthusiast shares their nostalgic perspective on various physical music formats, ranking them based on sound quality, convenience, and durability. CDs top the list for their pristine audio, though somewhat sterile; Minidiscs follow closely, offering portability and recordability despite limited capacity. Vinyl enjoys a nostalgic appeal and artistic value, but suffers from inherent sound quality limitations. The journey then descends through MP3 players, shellac records, pianola rolls, wax cylinders, and ultimately to the notoriously poor quality of cassette tapes, highlighting the evolution of music formats and their respective strengths and weaknesses.

(www.sicpers.info)

Misc audio formats

Complete Decompilation of LEGO Island (1997)

2024-12-23

Complete Decompilation of LEGO Island (1997)

The isle project has achieved a functionally complete decompilation of the classic game LEGO Island (Version 1.1, English) released in 1997. The goal is to create an accurate representation of the original game's code, matching recompiled instructions to the original machine code. Both ISLE.EXE and LEGO1.DLL are fully decompiled and functionally identical to the originals. Further work focuses on improving code accuracy, naming, documentation, and structure. While some bugs may remain, the game is playable. The project uses CMake and recommends Microsoft Visual C++ 4.2 for compiling for optimal accuracy.

(github.com)

Game game decompilation LEGO Island reverse engineering

cppyy: Seamless Python-C++ Interoperability

2025-07-16

cppyy is a runtime Python-C++ bindings generator that allows calling C++ from Python and vice-versa. It achieves high performance, low memory usage, cross-inheritance, and callbacks without language extensions or intermediate languages. Features include runtime template instantiation, automatic object downcasting, and exception mapping. Based on the Cling C++ interpreter, cppyy enables dynamic, interactive mixing of C++ and Python features and even supports modern C++ libraries like Boost. It works with CPython and PyPy, and is optimized for large-scale projects, excelling in performance and memory management.

(cppyy.readthedocs.io)

Development Bindings

South Korean Presidential Officials Accused of Prior Knowledge of Martial Law

2025-03-21

South Korean Presidential Officials Accused of Prior Knowledge of Martial Law

Lee Gwang-woo, head of the South Korean presidential security office, is accused of searching for terms like "martial law" on ChatGPT at 8:20 PM on December 3rd, two hours before the emergency martial law declaration. While Lee claims this was a time error in the forensic process, it raises suspicions he may have known about the plans beforehand. Separately, another presidential official, Kim Seong-hun, is accused of destroying evidence. Both will face pre-arrest investigations on the 21st.

(www.hani.co.kr)

Misc South Korean Politics Martial Law Evidence Destruction

Unmasking I/Q Signals: The Mystery of Wireless Communication

2025-07-30

Unmasking I/Q Signals: The Mystery of Wireless Communication

This article unveils the mystery behind I/Q signals, crucial in wireless communication but absent in traditional audio processing. It delves into the relationship between I/Q signals, sinusoidal waves, and the Fourier Transform. Using vector mathematics and the dot product, the article explains the orthogonality of I/Q signals and how they enable efficient modulation and demodulation. Finally, it clarifies why complex numbers are a more efficient way to represent I/Q signals in digital signal processing.

(wirelesspi.com)

Tech I/Q signals complex numbers

Unlocking Extreme Productivity with Claude Code and Background Agents

2025-07-18

This post details the author's experience using Claude Code and their tool, Terragon, for AI-assisted programming. Terragon manages multiple background Claude Code agents, running them in the cloud and automatically creating pull requests, dramatically boosting productivity. The author's workflow involves assigning tasks to Terragon's agents and then locally reviewing and testing. This hybrid approach allows for parallel task management, significantly increasing output, especially for repetitive tasks, code cleanup, and debugging. The post also shares lessons learned, including understanding the model's strengths and weaknesses, knowing when to abandon unsuccessful attempts, and effective time management.

(ymichael.com)

Development

Chinese Robot Attacks Festival Attendee: Raising AI Safety Concerns

2025-03-03

Chinese Robot Attacks Festival Attendee: Raising AI Safety Concerns

During the Lunar New Year festival in Tianjin, China, a Unitree Robotics H1 humanoid robot unexpectedly attacked a visitor, swinging its arms aggressively. While the manufacturer attributed the incident to a programming or sensor error, the event sparked widespread concern over the safety of robots in public spaces. This incident highlights the critical need to balance rapid advancements in AI and robotics with robust safety regulations and ethical considerations to prevent future occurrences.

(www.businesskorea.co.kr)

Tech robot safety

Building Your Own Userspace TCP/IP Stack: From Ethernet Frames to ARP

2025-03-04

Building Your Own Userspace TCP/IP Stack: From Ethernet Frames to ARP

This blog post, the first in a series, details building a minimal TCP/IP stack in Linux userspace. The goal is hands-on learning of network and system programming. It covers using TUN/TAP devices for intercepting network traffic, a deep dive into Ethernet frame format and parsing (MAC addresses, ethertype, CRC), and a thorough explanation of the Address Resolution Protocol (ARP), including packet format and the resolution algorithm. The post culminates in verifying the custom stack's ARP reply functionality using arping.

(www.saminiir.com)

Development

Simple Search: A Minimalist Collection of Search Bars

2025-01-26

Simple Search isn't a complex search engine; it's a website offering a minimalist collection of search bars. Stripping away unnecessary features, it focuses solely on the core function: searching. Users can easily access multiple popular search engines like Google, Bing, and DuckDuckGo from a single page, eliminating the need to switch between different websites. This makes it an efficient and convenient option for users needing quick access to search results.

(simplesearch.info)

Misc

Transborder Flight Bookings Between US and Canada Plummet Over 70%

2025-03-26

Transborder Flight Bookings Between US and Canada Plummet Over 70%

Recent data reveals a dramatic drop of over 70% in transborder flight bookings between the United States and Canada. Aviation analytics firm OAG shows a 71.4% to 75.7% decrease in bookings for April through September compared to the same period last year. April bookings alone are down 75.7%. While airlines have reduced some flights, it's far from enough to match the massive demand decline. This presents a significant challenge for airline route planning, requiring substantial adjustments to reflect current realities.

(onemileatatime.com)

Tech tourism US-Canada relations

Marker Fading: A Shocking 6-Month Test

2025-07-07

Marker Fading: A Shocking 6-Month Test

A six-month test revealed shocking lightfastness issues with markers. Alcohol-based markers, including expensive brands like Copic and Winsor & Newton, faded significantly, with some colors disappearing entirely. Water-based markers fared little better, showing considerable fading. However, some lightfast markers, such as Faber-Castell Pitt Artist Pens, Winsor & Newton Watercolour Markers, and Talens Pantone, performed better but still showed fading. To preserve marker artwork, scanning, photography, or framing with UV-resistant glass is recommended, especially for pinks and neons which were the worst performers.

(sarahrenaeclark.com)

Design markers fading lightfastness

GitHub Repo Visualization Tool: GitDiagram

2024-12-27

GitHub Repo Visualization Tool: GitDiagram

GitDiagram is a powerful tool that transforms any GitHub repository into an interactive diagram for quick and intuitive project visualization. Simply replace 'hub' with 'diagram' in any GitHub URL to generate the diagram. It supports popular frameworks like FastAPI, Streamlit, and Flask, making it easy for developers to use.

(gitdiagram.com)

Development

Firefox's Downward Spiral: The Decline of a Once-Great Browser

2025-06-17

Firefox's Downward Spiral: The Decline of a Once-Great Browser

The once-dominant browser Firefox is facing a serious crisis. From altering user agreements and abandoning promises of user data privacy, to prioritizing AI in 2025 despite lacking resources; from shutting down useful utilities Pocket and Fakespot, to Firefox itself experiencing increasing technical problems like failing to load mainstream websites, slow speed, excessive memory usage, etc., Firefox is gradually losing users. Mozilla's poor handling of Snap and Flatpak packaging, and the disastrous handling of an expiring root certificate, further exacerbated user loss. Reliant on Google for 90% of its revenue and holding only a 1.9% market share, Firefox's future looks bleak; it may truly be at its end.

(www.theregister.com)

Tech

Resurrecting a Caltech DEC Pro 380: A Retro Hardware Upgrade

2025-03-22

Resurrecting a Caltech DEC Pro 380: A Retro Hardware Upgrade

This article details the author's journey upgrading a vintage DEC Professional 380 computer, a relic from Caltech, based on the PDP-11 architecture. This machine represents one of DEC's less successful forays into the personal computer market, but its robust build and unique design remain fascinating. The author meticulously documents the upgrade process, including replacing the aging hard drive with an SSD and upgrading the RAM, alongside experiences using the PRO/VENIX operating system. Interwoven is a compelling history of DEC's struggles in the PC market and the evolution of the PDP-11 architecture, making for a technically detailed and engaging read.

(oldvcr.blogspot.com)

Hardware

arXivLabs: Experimental Projects with Community Collaborators

2025-06-16

arXivLabs is a framework for collaborators to develop and share new arXiv features directly on the website. Individuals and organizations working with arXivLabs embrace arXiv's values of openness, community, excellence, and user data privacy. arXiv is committed to these values and only partners with those who share them. Have an idea to enhance the arXiv community? Learn more about arXivLabs.

(arxiv.org)

Tech

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