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The Evolving Saga of 80387 FPU State Saving: A Tale of Documented Errors

2025-02-07

While investigating the behavior of x87 Floating Point Units (FPUs) and their state saving mechanisms (FSTENV/FLDENV and FSAVE/FRSTOR instructions), the author discovered discrepancies between early Intel documentation and later revisions concerning the 32-bit protected mode FPU state. Early 80387 documentation omitted the floating-point opcode from the 32-bit protected mode FPU state, while updated documentation included it. This led to several third-party reference books perpetuating the outdated information for years. The story highlights the evolution of technical documentation and how errors can persist in technical literature for extended periods.

(www.os2museum.com)

Hardware documentation errors

Breakthrough: Artificial Blood Could Save Countless Lives

2025-07-25

Breakthrough: Artificial Blood Could Save Countless Lives

Tens of thousands die annually in the US from lack of timely blood transfusions, due to the perishability of regular blood. Scientists at the University of Maryland School of Medicine have developed a novel artificial blood, stored as a powder and reconstituted with water on-site. This synthetic blood utilizes hemoglobin extracted from expired blood, encased in a protective fat bubble to mitigate toxicity. Animal trials show successful resuscitation, and human trials are hoped for within two years. This could revolutionize emergency medicine and battlefield care.

(www.npr.org)

Tech emergency medicine

LLMs and Coding Agents: A Cybersecurity Nightmare

2025-08-18

LLMs and Coding Agents: A Cybersecurity Nightmare

The rise of large language models (LLMs) and coding agents has created significant security vulnerabilities. Attackers can exploit prompt injection attacks, hiding malicious instructions in public code repositories or leveraging LLMs' cognitive gaps to trick coding agents into executing malicious actions, potentially achieving remote code execution (RCE). These attacks are stealthy and difficult to defend against, leading to data breaches, system compromise, and other severe consequences. Researchers have identified various attack vectors, such as hiding malicious prompts in white-on-white text, embedding malicious instructions in code repositories, and using ASCII smuggling to conceal malicious code. Even seemingly secure code review tools can be entry points for attacks. Currently, the best defense is to restrict the permissions of coding agents and manually review all code changes, but this doesn't eliminate the risk. The inherent unreliability of LLMs makes them ideal targets for attackers, demanding more effort from the industry to address this escalating threat.

(garymarcus.substack.com)

AI

QEMU 10.1 Released: Enhanced Architecture Support and Performance Improvements

2025-08-27

QEMU 10.1 is out, boasting enhanced support for multiple architectures including RISC-V, Arm, and x86, alongside significant performance improvements. New instruction set support (SME2, SVE2, etc.) has been added, along with new board models and virtualization features. Existing functionalities have also seen upgrades, such as improved floating-point exception emulation, optimized block device operations, and network performance boosts. Notably, Rust support has been enhanced but remains experimental.

(wiki.qemu.org)

Development System Emulation

NATO Responds to Baltic Sea Cable Cuts with Increased Naval Presence and AI Monitoring

2025-01-18

NATO Responds to Baltic Sea Cable Cuts with Increased Naval Presence and AI Monitoring

Following the suspected severing of undersea cables linking Finland and Estonia on Christmas Day, allegedly by a Russian-linked oil tanker, NATO is bolstering its response. Nearly a dozen warships will patrol the Baltic Sea to protect undersea infrastructure. Concurrently, a UK-led Joint Expeditionary Force (JEF) has reactivated an AI-powered system to track suspicious vessels. Finnish authorities have detained the implicated ship and its crew. This incident underscores rising tensions in the region, prompting a sustained increase in NATO's military presence to deter further sabotage.

(www.twz.com)

Tech NATO

Scalable Quantum Computing Takes a Leap Forward with Integrated Photonics

2025-03-01

Scalable Quantum Computing Takes a Leap Forward with Integrated Photonics

Researchers at ETH Zurich have made a breakthrough in building scalable quantum computers. They overcame a major hurdle in trapped-ion quantum computing: instability in ion transport caused by the interaction between optical components and the ion trap. Using ingenious compensation methods, they achieved over 99% fidelity for single-qubit logic gates, paving the way for larger, more powerful quantum computers. This research represents a significant step towards practical quantum computing.

(physics.aps.org)

Tech integrated photonics ion trap

Spain and Brazil Team Up to Tackle Tax Evasion by the Ultra-Rich

2025-07-02

Spain and Brazil Team Up to Tackle Tax Evasion by the Ultra-Rich

At the UN's 4th International Conference on Financing for Development in Seville, Spain and Brazil launched a bold initiative: a push for a fairer global tax system to make the ultra-wealthy contribute more to public finances. Highlighting that the richest 1% own over 95% of global wealth, they argue that lower effective tax rates and legal loopholes allow the wealthy to pay less than ordinary taxpayers. The initiative calls for increased information sharing, improved data analysis capabilities, and ultimately, a global wealth registry to enhance transparency and accountability. While acknowledging the time and political will required, Spain and Brazil believe this is a moderate approach to address the radical reality of growing wealth inequality.

(news.un.org)

Startup Global Tax System

Deconstructing Fenwick Trees with Functional Programming

2025-01-25

This paper delves into the implementation of Fenwick trees (also known as binary indexed trees). Starting with the more readily understandable segment tree, the author uses functional programming and equational reasoning to derive the implementation of Fenwick trees, revealing the logic behind their seemingly mysterious bitwise operations. By cleverly using a Haskell EDSL to operate on infinite two's complement binary numbers, the paper ultimately explains the secret of Fenwick trees' efficient implementation and proves the logarithmic time complexity of its update and range query operations.

(www.cambridge.org)

Development Fenwick tree segment tree

AI Music Models: Revolutionizing Music Creation?

2025-02-09

AI Music Models: Revolutionizing Music Creation?

From handcrafted instruments to digital audio workstations, music creation technology has constantly evolved. Now, AI music models are leading a new era, capable of generating entire songs, splitting stems, synthesizing vocals, and creating instrumental sounds. While some fear AI will replace artists, the author believes AI is more of an assistive tool, enhancing efficiency and expanding creative possibilities. In the future, AI-generated music may become indistinguishable from traditionally created music, presenting both opportunities and prompting a reevaluation of 'authentic art'.

(www.maximepeabody.com)

Tech music technology

Reviving Zork: A Cosmopolitan Porting Adventure

2025-04-14

The author successfully ported the original Infocom UNIX source code of the Zork text adventure game (from 1985) to modern operating systems using the Cosmopolitan project. Cosmopolitan's 'write once, run anywhere' capability allowed a single compilation to create executables running on Windows, macOS, Linux, and more, without needing a virtual machine. The process involved resolving issues like conflicting NULL definitions, missing function declarations, and deprecated functions in the original K&R-style C code. The result? Standalone executables of the Zork trilogy, available on GitHub, letting players experience this classic game on modern hardware.

(christopherdrum.github.io)

Game

Google's Contradictory Statements: Is the Open Web Dying?

2025-09-09

In May, Google executives stated that web publishing and the open web were thriving. However, a recent court document claims that "the open web is already in rapid decline." This contradicts previous statements and supports concerns voiced by the open web community. Google later clarified that it referred to the decline of "open-web display advertising," not the entire open web. This clarification, however, hasn't fully quelled the controversy, raising questions about whether Google misled the public and investors.

(www.seroundtable.com)

Tech

s5cmd: Blazing Fast S3 Command-Line Tool

2025-06-11

s5cmd: Blazing Fast S3 Command-Line Tool

s5cmd is a lightning-fast command-line tool for interacting with S3 and local filesystems. It boasts impressive speed improvements over existing tools like s3cmd and aws-cli, achieving up to 32x faster uploads and saturating 40Gbps network links for downloads. Supporting a wide array of operations, from basic object management (list, upload, download, delete) to advanced features like server-side encryption, ACL management, and SQL-based JSON selection, s5cmd offers a powerful and efficient workflow. Installation is straightforward via pre-built binaries, Homebrew, MacPorts, Conda, or building from source. It's compatible with Google Cloud Storage and other S3-compatible services, making it a versatile solution for managing object storage.

(github.com)

Development

Apple Solves Passkey's Biggest Problem: Cross-Platform Portability

2025-06-13

Apple Solves Passkey's Biggest Problem: Cross-Platform Portability

Apple showcased a crucial import/export feature for passkeys at WWDC, addressing the major drawback of this phishing-resistant authentication standard: platform lock-in. Previously, passkeys were often confined to a single operating system or password manager, making transfer between devices or platforms difficult. Apple's new functionality will allow seamless transfer of passkeys between iOS, macOS, iPadOS, and visionOS, also supporting passwords and verification codes. This significantly enhances passkey adoption and counters concerns about large companies using them for ecosystem lock-in.

(arstechnica.com)

Tech

Run Python with Libraries Directly in Your Browser

2025-03-15

Tired of setting up Python environments and installing libraries? Our online Python compiler gives you instant access to essential libraries like pandas, NumPy, Matplotlib, and requests, all within your browser. Skip the `pip install` hassle and just write and run your Python code. Perfect for learning, data analysis, and web scraping. Try our free online Python interpreter today!

(cliprun.com)

Development online Python compiler

Rare 'Sprites' and Other Transient Luminous Events Captured Above the Himalayas

2025-07-06

Rare 'Sprites' and Other Transient Luminous Events Captured Above the Himalayas

Photographers have captured a significant number of rare transient luminous events (TLEs) above the Tibetan Plateau, including red sprites, secondary jets, and ghosts. These events, often associated with powerful thunderstorms, are difficult to study due to their fleeting nature. Researchers synchronized videos and photos using satellite data and star maps, linking roughly 70% of observed sprites to their parent lightning strikes. This research highlights the value of amateur observations in scientific discovery and enhances our understanding of atmospheric phenomena and severe weather systems.

(www.nationalgeographic.com)

Tech Transient Luminous Events Red Sprites

The Physics of the Banned Spin Serve in Badminton

2025-08-24

The Physics of the Banned Spin Serve in Badminton

A recently banned badminton serve, known for its nearly impossible-to-return spin, has been analyzed by Chinese physicists. The 'spin serve,' which adds pre-spin just before racket contact, was banned by the Badminton World Federation (BWF) in 2023 due to concerns over unfair advantage. The BWF's research, published in Physics of Fluids, delves into the complex aerodynamics of the shuttlecock, revealing how its unique feather structure and the spin contribute to the serve's effectiveness. This research highlights the intricate physics behind seemingly simple sporting techniques and underscores the BWF's efforts to maintain fair play.

(arstechnica.com)

Game Spin Serve

Apollo Program: The Untold Story of Engineering Triumph and Tragedy

2025-01-02

Apollo Program: The Untold Story of Engineering Triumph and Tragedy

This article reviews Mike Gray's book, *Angle of Attack: Harrison Storms and the Race to the Moon*, focusing on North American Aviation's pivotal role and chief engineer Harrison Storms's struggles in the Apollo program. From blueprints to launchpad, Storms led his team through countless challenges, including developing the supersonic B-70 bomber and the X-15 hypersonic aircraft, and advancing rocket engine technology. Apollo's success relied heavily on Storms' team's innovations in materials science, welding, and rocket construction. However, after the Apollo 1 fire, Storms was unjustly dismissed, fading into relative obscurity. This book reveals the human cost and unforeseen challenges behind one of humanity's greatest achievements.

(www.construction-physics.com)

Tech Aerospace Engineering Technological Challenges

VR Headsets for Mice Advance Brain Research

2024-12-31

VR Headsets for Mice Advance Brain Research

Researchers have developed MouseGoggles, a virtual reality headset for lab mice, enabling immersive studies of brain activity. Using affordable smartwatch displays and tiny lenses, these goggles overcome limitations of previous bulky projector systems. Mice exhibited realistic responses to virtual threats, with brain scans confirming the effectiveness of the virtual environment. This technology promises breakthroughs in understanding mammalian brain function and could aid in researching diseases like Alzheimer's.

(phys.org)

Tech mouse research

gRPC vs REST: Choosing the Right API Design Model

2025-01-23

gRPC vs REST: Choosing the Right API Design Model

This article delves into gRPC and REST, two primary API design models, and the role of OpenAPI. gRPC, based on the RPC model, hides data details, while REST, based on HTTP, is resource-oriented. Many APIs cleverly combine the strengths of both, using an entity-oriented approach but implemented with gRPC. The article compares three ways to use HTTP for APIs: REST, gRPC, and OpenAPI, outlining their advantages and disadvantages, ultimately suggesting choosing the best approach based on specific needs. gRPC offers superior performance but requires special software; OpenAPI is flexible but complex to design; REST is simple and straightforward but less commonly used. The choice involves weighing project requirements, team technology stack, and maintainability.

(cloud.google.com)

Development

Xata's Efficient MCP Server: OpenAPI, Kubb, and a Pinch of Next.js

2025-05-27

Xata's Efficient MCP Server: OpenAPI, Kubb, and a Pinch of Next.js

Xata built an MCP server enabling secure real-time interaction between AI models and tools/APIs. Instead of hand-coding each tool, they leveraged their existing OpenAPI specification and Kubb, a code generation tool, to automate the process. This approach uses the OpenAPI spec as a single source of truth, ensuring rapid development and consistency. The post details migrating to Kubb, creating custom generators, and building the MCP server with Next.js, resulting in an efficient AI integration.

(xata.io)

Development

MELP and MELPe Vocoders: The Evolution of Military Speech Communication

2025-09-17

MELP and MELPe Vocoders: The Evolution of Military Speech Communication

This article introduces Mixed-Excitation Linear Prediction (MELP) and its enhanced version, MELPe, vocoders. Originally invented by Alan McCree, MELP became a US DoD standard (MIL-STD-3005) in 1997 and saw widespread use in military applications and satellite communications. MELPe, an improvement on MELP, became the new MIL-STD-3005 in 2001 and was adopted by NATO as STANAG-4591 in 2002. MELPe significantly outperforms older military standards like CELP and LPC-10e in speech quality, intelligibility, and noise immunity, especially in noisy environments.

(melpe.org)

Tech speech coding

Mathematicians Crack Turbulent Diffusion Conjecture: A Century-Old Mystery Solved

2025-05-16

Mathematicians Crack Turbulent Diffusion Conjecture: A Century-Old Mystery Solved

A team of mathematicians spent two years developing a novel grid refinement technique to prove the superdiffusion conjecture in turbulent fluids. By progressively refining their computational grid, they ultimately revealed regularities in fluid behavior at larger scales. This allowed them to apply traditional homogenization techniques, precisely calculating the diffusion rate of particles in turbulence, matching physicists' decades-old predictions. This breakthrough not only solves a long-standing scientific problem but also provides new methods and insights for studying more complex turbulent phenomena and other physical problems.

(www.quantamagazine.org)

Tech turbulence superdiffusion

AI in the 80s: A Simple Animal Guessing Game That Pioneered Machine Learning

2025-01-12

AI in the 80s: A Simple Animal Guessing Game That Pioneered Machine Learning

This article recounts a simple game, "Guess the Animal," written in BASIC in the 1980s. Using a decision tree, the game asks yes/no questions to guess the animal. Crucially, it learns from mistakes, adding new questions and answers to its knowledge base and saving/loading progress. This showcases early explorations of trainable algorithms, predating modern AI hype. The author recreated the algorithm in C++, comparing the advantages and disadvantages of both implementations. The article highlights how even simple ideas, like decision trees and self-learning, anticipated modern AI.

(medium.com)

AI decision tree

SQL Injection Exposes 62,000 Accounts in Stalkerware App Catwatchful

2025-07-09

SQL Injection Exposes 62,000 Accounts in Stalkerware App Catwatchful

A security researcher discovered a critical SQL injection vulnerability in Catwatchful, an Android spyware app. The vulnerability allowed access to the app's database, revealing plaintext passwords and other user data for approximately 62,000 accounts. Despite the app's claims of invisibility, the researcher easily exploited the vulnerability. While the issue was reported to relevant cloud providers, the service was briefly restored under a new domain before being finally taken down.

(ericdaigle.ca)

Tech Stalkerware

From Tedious Text to AI-Powered Audio Trading Journals

2025-04-16

From Tedious Text to AI-Powered Audio Trading Journals

A trader shares their journey from cumbersome text-based trading journals to a highly effective audio journaling system enhanced by AI. Using Audacity for recording, they capture real-time emotions, strategies, and market dynamics. AI tools like NotebookLM then summarize and analyze the audio logs, identifying patterns, preventing repeated mistakes, and refining trading strategies. This approach boosts journaling consistency, provides deeper self-awareness of trading behavior, and ultimately improves trading performance.

(www.fractiz.com)

Development trading journal trading strategy

STOP AI: Radical Protest Against AGI Development

2025-02-21

STOP AI: Radical Protest Against AGI Development

A radical group called STOP AI is actively protesting the development of Artificial General Intelligence (AGI) by companies like OpenAI. They believe AGI poses an existential threat to humanity and are calling for governments to ban its development and even destroy existing models. The group's members have diverse backgrounds, ranging from engineers to physicists, and they're employing various methods, including protests and civil disobedience, aiming to rally 3.5% of the US population to effect change. The case also involves the death of former OpenAI employee Suchir Balaji, with STOP AI demanding a thorough investigation. Despite the immense challenges, they remain determined in their fight to halt AGI development.

(www.theregister.com)

AI civil protest

Turning Waste Rock into Battery Materials: A New Zealand Startup's Sustainable Approach

2025-07-27

Turning Waste Rock into Battery Materials: A New Zealand Startup's Sustainable Approach

Aspiring Materials, a New Zealand company, has developed a patented process to extract valuable minerals, including nickel-manganese-cobalt hydroxide (NMC) for lithium-ion batteries, from olivine, a previously low-value waste product. Their process uses acid leaching to transform olivine into a solution from which silica, magnesium hydroxide, and NMC are extracted. The closed-loop system produces no harmful waste and utilizes renewable energy. While NMC constitutes only 10% of the output, this technology offers a more sustainable and geopolitically stable alternative for battery material supply chains, reducing reliance on high-risk mining regions.

(spectrum.ieee.org)

Tech Sustainable Mining Battery Materials Olivine

Zip Codes: Pitfalls and Alternatives in Data Analysis

2025-02-07

Zip Codes: Pitfalls and Alternatives in Data Analysis

This article exposes the flaws of widely used zip codes in data analysis. Zip codes aren't based on actual geographical boundaries but rather on mail delivery routes, leading to biases in reflecting demographic trends and human behavior, potentially resulting in erroneous conclusions. Using the US as an example, the article analyzes discrepancies between zip codes and census block groups in income data, highlighting how zip code analysis can mask critical issues, such as the Flint water crisis. The article suggests using more precise address data, census units, or spatial indexes like H3 and quadkey as alternatives to zip codes for more accurate and reliable data analysis.

(carto.com)

Tech Spatial Data Science Zip Codes

Polygon Sold to Valnet, Massive Layoffs Ensue

2025-05-01

Polygon Sold to Valnet, Massive Layoffs Ensue

Gaming news website Polygon has been sold to click-farm giant Valnet, resulting in significant layoffs. Many employees have expressed shock and concern on social media about losing their jobs. Polygon co-founder and former editor-in-chief Chris Plante confirmed his departure. The sale price was undisclosed, and the press release made no mention of the layoffs. Some editors reportedly remain. Valnet, known for operating numerous content aggregation sites, has previously faced accusations of exploitative content practices. The acquisition has raised concerns about the future of gaming journalism.

(kotaku.com)

Game gaming journalism

Anthropic's Claude AI: Web Search Powered by Multi-Agent Systems

2025-06-21

Anthropic's Claude AI: Web Search Powered by Multi-Agent Systems

Anthropic has introduced a new Research capability to its large language model, Claude. This feature leverages a multi-agent system to search across the web, Google Workspace, and any integrations to accomplish complex tasks. The post details the system's architecture, tool design, and prompt engineering, highlighting how multi-agent collaboration, parallel search, and dynamic information retrieval enhance search efficiency. While multi-agent systems consume more tokens, they significantly outperform single-agent systems on tasks requiring broad search and parallel processing. The system excels in internal evaluations, particularly breadth-first queries involving simultaneous exploration of multiple directions.

(www.anthropic.com)

AI

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