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Black Magic: A Blazing Fast Circular Buffer

2025-01-11

This article presents a clever optimization of circular buffers using virtual memory paging. Traditional circular buffer read/write operations are inefficient due to boundary handling. The author uses the `mmap` system call to map the buffer to two contiguous virtual memory regions. This allows writes to proceed continuously without boundary checks, drastically improving performance. This method leverages the OS to handle wrap-around automatically, eliminating complex boundary checks and modulo operations. The result is a threefold performance increase.

(lo.calho.st)

Development circular buffer virtual memory

Emergent Behaviors in LLMs: A Plausibility Argument

2025-05-08

Large Language Models (LLMs) exhibit surprising emergent behaviors: a sudden ability to perform new tasks when the parameter count reaches a certain threshold. This article argues that this isn't coincidental, exploring potential mechanisms through examples from nature, machine learning algorithms, and LLMs themselves. The author posits that LLM training is like searching for an optimal solution in high-dimensional space; sufficient parameters allow coverage of the algorithm space needed for specific tasks, unlocking new capabilities. While predicting when an LLM will acquire a new capability remains challenging, this research offers insights into the underlying dynamics of LLM improvement.

(www.johndcook.com)

AI Emergent Behavior Parameter Scaling

Vanguard: King of Low-Cost Investing?

2025-05-01

Vanguard: King of Low-Cost Investing?

Vanguard stands out in the investment world with its unique client-owned structure and exceptionally low expense ratios. Data reveals that a significant number of Vanguard funds outperformed their peers over the past decade, particularly its actively managed bond funds. Furthermore, Vanguard's cash account interest rates are considerably higher than average bank savings rates. Top rankings from J.D. Power and Morningstar reinforce Vanguard's leadership in investor satisfaction and robo-advisory services. However, the text emphasizes that past performance is not indicative of future results, and all investments carry risk.

(corporate.vanguard.com)

Startup low-cost

Voyager's Sunset: A Legacy of Interstellar Exploration

2025-04-05

Voyager's Sunset: A Legacy of Interstellar Exploration

Nearly 50 years after launch, the Voyager probes are nearing the end of their operational lives. Powering down due to decaying plutonium, the aging spacecraft lose 4 watts annually, forcing tough decisions to shut down non-essential systems, including science instruments. Project scientist Linda Spilker recounts the challenges of maintaining these aging vessels and the effort to pass on their knowledge to new generations. Voyager's journey, yielding invaluable data on the heliopause and interstellar space, inspires future interstellar missions, charting a course for humanity's continued exploration of the cosmos.

(gizmodo.com)

Tech

Running Linux in Excel: A Fun Hack

2025-04-30

Running Linux in Excel: A Fun Hack

A developer successfully ran a Linux system within Microsoft Excel! Using a lightweight emulator called mini-rv32ima, compiled as a DLL, and called via VBA macros, the developer managed to display Linux output directly in Excel cells. While the project is admittedly buggy and the author admits to using an external DLL rather than rewriting the emulator in VBA or Excel formulas, it's a creative and fun experiment showcasing ingenuity and programming skill.

(github.com)

Development

Mysterious Wifi Latency Spikes Solved: It Was Qt5!

2025-01-02

For eight months, the author battled intermittent 2000ms+ wifi latency spikes, crippling gaming and video calls. New network adapters, OS reinstalls—nothing worked. The culprit? MediBang Paint Pro, using Qt5 (<5.14). Its QNetworkAccessManager incessantly checks for wifi interface changes, causing massive lag. The fix? Setting the environment variable QT_BEARER_POLL_TIMEOUT to -1.

(ryuuta.net)

Development Wifi issues Network Latency

Memorable Primes: A Hunt for Special Numbers

2025-01-21

Memorable Primes: A Hunt for Special Numbers

Mathematicians are fascinated by the pursuit of special prime numbers, such as palindromic primes and Smarandache primes. The article recounts anecdotes about prime numbers and the quest for 'memorable primes,' like 12345678910987654321. Indian engineer Shyam Sunder Gupta discovered a massive palindromic prime with 17,350 digits, sparking a wider hunt. While these primes don't offer immediate mathematical applications, their unique properties and the search itself are captivating, attracting numerous math enthusiasts.

(www.scientificamerican.com)

Misc

arXivLabs: Experimenting with Community Collaboration

2025-04-22

arXivLabs is a platform enabling collaborators to build and share new arXiv features directly on the site. Participants must adhere to arXiv's values of openness, community, excellence, and user data privacy. Got an idea to improve the arXiv community? Learn more about arXivLabs!

(arxiv.org)

Development

Meta's AI-Optimized Concrete Cuts Data Center Emissions

2025-07-17

Meta's AI-Optimized Concrete Cuts Data Center Emissions

Meta partnered with Amrize to develop a new, AI-optimized concrete mix for its upcoming Rosemount, Minnesota data center. Leveraging open-source AI models and real-world data, this innovative concrete is projected to reduce the carbon footprint by 35% compared to traditional mixes, without sacrificing strength or construction speed. This collaboration showcases the potential of AI in materials science and sustainable infrastructure development.

(nerds.xyz)

Tech

Plex Security Breach: User Passwords Compromised, Reset Now!

2025-09-09

Plex Security Breach: User Passwords Compromised, Reset Now!

Streaming server Plex experienced a security incident where hackers accessed a database, exposing some user emails, usernames, and hashed passwords. While passwords were encrypted, Plex is requiring all users to reset their passwords and log out of all connected devices as a precaution. The company has patched the vulnerability and implemented further security measures, urging users to enable two-factor authentication.

(nerds.xyz)

Tech

Android Tightens FRP: Bypassing Setup Wizard Triggers Forced Factory Reset

2025-05-13

Android Tightens FRP: Bypassing Setup Wizard Triggers Forced Factory Reset

Google is bolstering Android's Factory Reset Protection (FRP) to combat phone theft. The enhancement detects setup wizard bypass attempts and forces a second factory reset, preventing unauthorized use until previous ownership is verified via Google account or screen lock. This significant security upgrade in Android builds upon the improvements in Android 15, addressing previously unblocked bypass methods. The feature is expected later this year, possibly within an Android 16 Quarterly Platform Release (QPR).

(www.androidauthority.com)

Tech Anti-theft

Lidar Can Fry Your Phone's Camera

2025-05-23

Lidar Can Fry Your Phone's Camera

A Reddit user recently discovered that car-mounted lidar sensors can permanently damage a phone's camera under certain conditions. While filming a Volvo EX90 with an iPhone 16 Pro Max, the lidar's near-infrared light fried pixels in the camera lens. Volvo has warned against pointing cameras directly at lidar sensors, highlighting the potential risks of increasingly prevalent lidar technology in autonomous vehicles. The incident underscores the growing concerns about the interaction between lidar and consumer electronics.

(www.jalopnik.com)

Tech lidar camera damage

Oh Shit, Git!?! A Survival Guide

2025-01-16

This blog post humorously recounts the author's struggles with Git and offers practical solutions to common problems. It covers scenarios like undoing commits, amending commit messages, accidentally committing to the wrong branch, and recovering files, providing clear commands and steps. The author invites readers to share their own Git horror stories for collective learning.

(ohshitgit.com)

Development Code Management

Euclid's First Data Release: A Treasure Trove of Deep Field Galaxies

2025-03-23

Euclid's First Data Release: A Treasure Trove of Deep Field Galaxies

The European Space Agency's Euclid mission released its first batch of survey data, offering a preview of its deep fields. This includes millions of galaxies, showcasing their large-scale organization in the cosmic web. Combining AI and citizen science, Euclid classified over 380,000 galaxies and 500 gravitational lens candidates. This rich dataset will help unravel the mysteries of dark matter and dark energy by precisely measuring the shapes and distribution of billions of galaxies across a third of the sky. The initial data, from just a week of observation, already contains 26 million galaxies, some up to 10.5 billion light-years away.

(www.esa.int)

Tech Euclid Deep Field Galaxies Dark Matter and Dark Energy

AI Avatars: The Next Frontier in AI-Generated Content

2025-04-11

AI Avatars: The Next Frontier in AI-Generated Content

AI has mastered generating realistic photos, videos, and voices. The next leap? AI avatars – combining faces and voices to create talking characters. This isn't just image generation and voiceovers; it requires AI to learn the intricate coordination of lip syncing, facial expressions, and body language. This article explores the evolution of AI avatar technology, from early models based on single photos to sophisticated models generating full-body movement and dynamic backgrounds. It also analyzes the applications of AI avatars in content creation, advertising, and corporate communication, and discusses future directions, such as more natural expressions, body movements, and interactions with the real world.

(a16z.com)

AI AI avatars AI technology

Microsoft Store Package for Windows LTSC

2025-05-13

Microsoft Store Package for Windows LTSC

This project provides a Microsoft Store package for Windows 10 LTSC 2019, 2021, and Windows 11 LTSC 2024. Note that recent LTSC 2019 versions no longer support this store; a system update might be required after installation. Simply download and double-click to install; however, for optimal performance, update to the latest version within the Store settings after installation.

(github.com)

Development Microsoft Store Installer

Hollywood's AI Revolution: A Tightrope Walk Between Ethics and Efficiency

2025-06-04

Hollywood's AI Revolution: A Tightrope Walk Between Ethics and Efficiency

Hollywood is undergoing a revolution driven by AI. The emergence of studios like Asteria Film Co., founded by Bryn Mooser and Natasha Lyonne, highlights the widespread adoption of AI in filmmaking, but also sparks ethical and copyright concerns. Companies are using AI to generate images and videos, lowering costs and boosting efficiency, but face the risk of copyright lawsuits. Actors' and writers' guilds negotiated new contracts to protect their members' rights. However, AI adoption is inevitable, leading Hollywood to navigate the tightrope between efficiency and ethics. Some studios, like Asteria, are attempting to build "ethical" AI models trained on licensed material, attempting to address the challenges head-on.

(www.vulture.com)

Tech

Geometric Frustration: The Secret to the Rose's Shape

2025-05-09

Geometric Frustration: The Secret to the Rose's Shape

Physicists at the Hebrew University of Jerusalem have discovered the mechanical secret behind the rose's iconic shape. Their research, published in Science, reveals that the unique morphology of rose petals is driven by 'Mainardi-Codazzi-Peterson incompatibility,' a geometric frustration. This incompatibility prevents petals from achieving their ideal smooth curve, resulting in the multiple curls and sharp edges we see. The team used a combination of theoretical analysis, computer modeling, and physical experiments to unravel this mechanism, potentially paving the way for new shape-morphing materials.

(phys.org)

Tech rose

AI-Assisted Development: The Architect's Ascent

2025-05-27

AI-Assisted Development: The Architect's Ascent

From NoCode to AI-assisted development, technological advancements haven't rendered developers obsolete; instead, they've reshaped roles and skill requirements. Past waves of NoCode, cloud computing, and offshore development didn't eliminate developers but created new specializations like NoCode specialists and DevOps engineers, often with higher salaries. AI-assisted development follows this pattern. AI excels at code generation, but it struggles with system architecture. Thus, the most valuable skill in software engineering will be system architecture—a domain where AI lags significantly. AI accelerates development, increasing the complexity of system maintenance and highlighting the crucial role of experienced architects in managing and mitigating risks.

(alonso.network)

Development

The Mystery of the Strobe Dots on Your Turntable

2025-04-10

The Mystery of the Strobe Dots on Your Turntable

Those little dots on your turntable aren't just for looks; they're a clever speed-checking mechanism! The 'stroboscopic effect' lets you visually verify your turntable's RPM accuracy. A quick glance tells you if the platter is spinning at the correct speed. Jumping or drifting dots? Time to check your motor or pitch slider. This article explains the physics behind this handy feature and how to use it to ensure your vinyl plays perfectly.

(www.djmentors.com)

Hardware turntable stroboscopic effect vinyl

The Century-Long Evolution of Radio Receivers: From Hardware to Software

2025-05-30

In 1862, James Clerk Maxwell laid the theoretical groundwork for electromagnetic energy. Thirty years later, Heinrich Hertz demonstrated radio transmission and reception, ushering in the era of Hardware-Defined Receivers (HDRs). Over 150 years, receiver design shifted from a hardware-centric approach to a software-centric one, with Software-Defined Receivers (SDRs) dominating the landscape for the past two decades. This evolution highlights the dynamic interplay between hardware and software in technological advancement.

(radio-astronomy.org)

Hardware Hardware-Defined Receivers Software-Defined Receivers Radio Technology

Robots Learn to Identify Objects by 'Blindly' Feeling Them

2025-05-13

Robots Learn to Identify Objects by 'Blindly' Feeling Them

Researchers from MIT, Amazon Robotics, and the University of British Columbia have developed a new technique enabling robots to learn an object's weight, softness, or contents using only internal sensors—no cameras or external tools needed. By picking up and gently shaking an object, the robot infers properties like mass and softness. The technique uses simulations of the robot and object, analyzing data from the robot's joint encoders to work backward and identify object properties. This low-cost method is particularly useful in environments where cameras are ineffective (like dark basements or post-earthquake rubble) and is robust in handling unseen scenarios. Published at the International Conference on Robotics and Automation, this research promises to improve robot learning, enabling faster development of manipulation skills and adaptation to changing environments.

(news.mit.edu)

AI robot perception object recognition

Solving the Dual-Computer Single-Monitor KVM Puzzle with a USB-C Combiner Box

2025-05-24

Solving the Dual-Computer Single-Monitor KVM Puzzle with a USB-C Combiner Box

The author uses a MacBook Air and a FreeBSD desktop connected to a single Dell 4K monitor in their home office. The MacBook Air connects via a single USB-C cable providing power, DisplayPort video, and a USB 2.0 hub for mouse, keyboard, and webcam. However, the FreeBSD desktop only connects via a separate DisplayPort cable, requiring frequent unplugging and replugging of peripherals when switching computers. To solve this, the author explores using a USB-C combiner box to convert the desktop's DisplayPort and USB signals into a single USB-C signal, enabling convenient switching between the two computers on a single monitor without the inconvenience of a full KVM.

(rubenerd.com)

Hardware

Saying Goodbye to the Docker Daemon: The Rise of Podman

2025-09-05

Saying Goodbye to the Docker Daemon: The Rise of Podman

This article reflects on the rise and security concerns of Docker container technology, introducing Podman, a daemonless container runtime. Podman addresses the security and stability issues of the Docker daemon through its streamlined architecture, enhanced security (rootless operation), and seamless integration with systemd and Kubernetes. A practical guide to migrating a FastAPI application from Docker to Podman is provided, showcasing the ease of migration and the advantages Podman offers, such as improved resource utilization and a more secure production environment.

(codesmash.dev)

Development

Colossal's 'Dire Wolves': Gene Editing Sparks Controversy

2025-04-08

Colossal's 'Dire Wolves': Gene Editing Sparks Controversy

Colossal Biosciences claims to have resurrected the extinct dire wolf, using gene editing to create grey wolf pups—Remus, Romulus, and Khaleesi—with some dire wolf traits. However, studies show grey wolves and dire wolves diverged 6 million years ago, with significant genetic differences. Colossal's claim of achieving this with only 20 gene edits is controversial. The three gene-edited pups are under observation in a reserve, and breeding is prohibited. This raises questions about species definition and the ethical challenges of gene editing.

(www.newscientist.com)

Tech dire wolf

Feedsmith: A Blazing Fast & Robust Feed Parser

2025-05-06

Feedsmith: A Blazing Fast & Robust Feed Parser

Feedsmith is a high-performance JavaScript parser and generator for RSS, Atom, JSON Feed, and RDF feeds, including popular namespaces and OPML files. It preserves the original feed structure, offering clean, object-oriented data with intelligent normalization of legacy elements. Boasting incredible speed, type safety, tree-shaking capabilities, and support for both Node.js and modern browsers, Feedsmith provides both universal and format-specific parsers. It currently supports JSON Feed and OPML generation.

(github.com)

Development Feed Parser

Approximating Perspective Transforms in SVG for Lightweight 3D Rendering

2025-06-05

Approximating Perspective Transforms in SVG for Lightweight 3D Rendering

A developer built a vanilla Typescript 3D renderer to render circuit boards made in React as SVGs. Since SVGs lack native perspective transforms, they cleverly used affine transformations and image subdivision. By splitting the image into many sub-regions and applying locally-correct affine transforms to each, they approximated perspective. Results showed excellent visual quality with 512 subdivisions while keeping SVG file sizes manageable. This approach offers a neat solution for displaying and reviewing circuit board changes on GitHub.

(seve.blog)

Development Perspective Transform

Amazon Prime Video Faces Lawsuit Over 'Buy' Button Misleading Consumers

2025-09-01

Amazon Prime Video Faces Lawsuit Over 'Buy' Button Misleading Consumers

A user is suing Amazon Prime Video, claiming its use of the "buy" button is misleading, as it actually purchases a revocable license to access digital content, not permanent ownership. The plaintiff points out that the fine print below Prime Video's "buy" button is too inconspicuous, only visible at the final stage of the transaction. Legal experts believe Amazon might argue users should read the full terms, but the plaintiff is likely to win because ordinary consumers understand "buy" as a permanent transaction. The key to this case is proving that Amazon's advertising is misleading and the losses suffered by consumers due to content removal.

(arstechnica.com)

Tech

Australia Bans Kaspersky Lab Products Over Security Concerns

2025-02-27

Australia Bans Kaspersky Lab Products Over Security Concerns

The Australian government has banned all Kaspersky Lab products and web services from its systems, citing unacceptable security risks related to foreign interference, espionage, and sabotage. Kaspersky denies these allegations, claiming the ban lacks specific evidence and is politically motivated. This follows similar bans in the US, Germany, and Canada, reflecting a broader trend of Western nations restricting Kaspersky's access to government systems.

(www.bleepingcomputer.com)

Tech Kaspersky

Precision Clock Mk IV: A Two-Year Hardware Odyssey

2025-05-31

After a two-year odyssey, the Precision Clock Mk IV is finally here! This clock boasts millisecond precision with no perceptible jitter, automatically sets its timezone via GPS, and maintains accurate time even when powered off. Its innovative design features dual processors, six buffer chips, and a clever articulated hinge allowing for single or double-line display modes. The article details the intricate hardware design, software implementation, and manufacturing process, a true hardware epic!

(mitxela.com)

Hardware Precision Instrument

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