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AI-Powered Turtle Artist in ROS Sim

2025-05-31

AI-Powered Turtle Artist in ROS Sim

turtlesim_agent is an AI agent that transforms the classic ROS turtlesim simulator into a creative canvas driven by natural language. Leveraging LangChain, it interprets text instructions and translates them into visual drawings, turning the simulated turtle into a digital artist. Users describe shapes or drawing intentions in plain English; the AI reasons through the instructions and executes them using turtlesim's motion commands. This project explores how large language models interact with external environments to exhibit creative behavior.

(github.com)

AI

Exploiting EOL Network Devices: A Junkyard Competition Win

2025-07-29

Exploiting EOL Network Devices: A Junkyard Competition Win

Researchers secured second place at DistrictCon's Junkyard competition by successfully exploiting two discontinued network devices: a Netgear WGR614v9 router and a BitDefender Box V1. Their exploit chains highlighted the persistent security risks of end-of-life (EOL) hardware, where unpatched vulnerabilities remain exploitable after manufacturer support ceases. The researchers detailed multiple vulnerabilities, including authentication bypasses, buffer overflows, and command injections, leading to remote root access on both devices. This research underscores the importance of considering manufacturer support lifecycles and community firmware options when selecting devices and highlights the ongoing security challenges posed by EOL IoT devices.

(blog.trailofbits.com)

Tech

Hive Roaster: Revolutionizing Home Coffee Roasting

2025-02-26

Hive Roaster: Revolutionizing Home Coffee Roasting

The Hive Roaster Cascabel is a lightweight, durable home coffee roaster inspired by commercial designs. It allows for high-quality coffee bean roasting at home with ease. Its unique design combines convective and conductive heat for low-smoke, mess-free indoor roasting, and it's incredibly easy to learn. User reviews are overwhelmingly positive, praising its simplicity and professional-level results, even in small apartments. The Hive Roaster is available internationally, including Thailand, and has earned endorsements from professional coffee roasters.

(hiveroaster.com)

Hardware coffee roasting home appliance

C Programming Practices: Purity, Speed, and Correctness

2025-09-18

This document presents notes on C programming practices, covering coding style, function and variable naming conventions, formatting, commenting, and clever C tricks like bit counting and loop unrolling. The author emphasizes striving for code purity, speed, and correctness, offering insights into utilizing header files, compilers effectively, and revisiting common programming paradigms like the use of GOTO statements. The goal is to improve the quality and efficiency of C programming.

(www.teamten.com)

Development

Norway's Sovereign Wealth Fund: A Petrodollar Powerhouse

2025-02-01

Norway's Sovereign Wealth Fund: A Petrodollar Powerhouse

After claiming sovereignty over the Norwegian Continental Shelf in 1963, Norway discovered vast oil reserves. In 1990, the Government Petroleum Fund was established to invest this wealth in a diverse portfolio of assets. Today, this fund is the world's largest sovereign wealth fund, boasting over $1.78 trillion in assets – equivalent to over $319,900 per Norwegian citizen. While equities constitute the majority of the fund's value, Norges Bank Investment Management (NBIM) has increasingly allocated capital to renewable energy infrastructure. Ironically, Norway's ambitious green transition, including its near-complete shift to electric vehicles, is fueled by trillions in petrodollars.

(sherwood.news)

Startup Sovereign Wealth Fund Oil Investment

Starlink Mini: Portable High-Speed Internet Anywhere

2025-01-04

Starlink Mini: Portable High-Speed Internet Anywhere

SpaceX's Starlink has launched a portable mini satellite dish for $599, offering high-speed internet virtually anywhere. With monthly plans starting at $50, this backpack-friendly device delivers speeds up to 100Mbps, ideal for digital nomads and those in remote areas. Durable and weather-resistant, it supports up to 128 devices and boasts low latency, perfect for online gaming. Elon Musk showcased its impressive speed, calling it world-changing.

(www.cnet.com)

Tech Satellite Internet Portable

25 Years in Open Source: A KDE Developer's Bitter Farewell

2025-09-16

A 25-year veteran of the open-source world recounts their journey with KDE. From early days with Linux and contributions to Ubuntu and Kubuntu, to spearheading KDE Neon, they witnessed both the triumphs and the harsh realities of open source. Ultimately, a clash of ideals led to their expulsion from the project, resulting in the loss of their job, friends, and family. This poignant account reflects on the commercialization of open-source communities and the crucial importance of worker rights.

(jriddell.org)

Development

Netflix Solves the EBPF Flow Log IP Address Attribution Problem

2025-04-08

Netflix Solves the EBPF Flow Log IP Address Attribution Problem

Netflix previously used eBPF to collect TCP flow logs, but IP address attribution issues rendered the data unreliable. The initial approach relied on a Sonar service, but suffered from delays and inaccuracies. To solve this, Netflix redesigned its attribution method. For local IP addresses, it leverages EC2 instance certificates or utilizes the IPMan service and eBPF maps to handle container workloads. For remote IP addresses, FlowCollector collects flow logs and uses timestamps and local IP address attribution information to infer remote IP address ownership. A Kafka-based mechanism shares data across nodes, addressing regionalization and non-workload IP address attribution. Finally, validation using the Zuul service demonstrates that the new method effectively eliminates misattribution, making eBPF flow logs provide reliable network insights.

(netflixtechblog.com)

Tech flow logs IP address attribution

Apple's iPhone Sales Surge 15% in April-May, Reclaiming China's Top Spot

2025-06-19

Apple's iPhone Sales Surge 15% in April-May, Reclaiming China's Top Spot

Apple's iPhone sales jumped 15% year-over-year in April and May, marking its strongest two-month performance since the pandemic, according to Counterpoint Research. Growth was fueled by the US and China, with both markets returning to positive year-over-year growth after a three-year slump. Apple notably regained the top spot in China's smartphone market in May, reversing recent market share losses. Strong demand in Japan was also reported, driven by the more affordable iPhone 16e. Analysts suggest that AI's influence on smartphone purchases remains limited, giving Apple time to integrate its AI capabilities further.

(www.macrumors.com)

Tech iPhone sales China market

Simulating a Cambrian Explosion: Evolve Your Own Virtual Creatures

2025-02-14

MIT researchers have developed a Cambrian Vision Simulator allowing users to define and evolve their own embodied agents. You can set tasks, evolve agents' eyes or brains, and explore generative design of visual intelligence. This project will also be exhibited at the MIT Museum, showcasing evolving eyes in virtual reality. The research aims to use biological principles (natural evolution) to study the evolution of vision and design more intelligent artificial vision, triggering a Cambrian Explosion of artificial vision.

(eyes.mit.edu)

AI Evolutionary Algorithms

Escaping AWS's Surprise Bills and Over-engineered Mess: My Migration to NearlyFreeSpeech

2025-02-04

Escaping AWS's Surprise Bills and Over-engineered Mess: My Migration to NearlyFreeSpeech

Tired of unpredictable AWS costs and overly complex systems, the author switched to NearlyFreeSpeech (NFS). NFS's prepaid model gave him complete cost control, and its simple dashboard made managing multiple projects a breeze. The post details migrating nine apps to NFS, including those using Next.js, React, Express, and other tech stacks, sharing challenges and solutions encountered. While one Python Flask app proved more complex to migrate, the author attributes this to the app's dependencies, not NFS. Ultimately, the author achieved lower costs and greater peace of mind with NFS, recommending it to other developers.

(travisbumgarner.dev)

Development cloud hosting cost control

Four Foundational Fallacies of AI: A Winding Path to AGI

2025-09-11

Four Foundational Fallacies of AI: A Winding Path to AGI

This article explores Melanie Mitchell's four foundational fallacies of artificial intelligence: equating narrow AI progress with Artificial General Intelligence (AGI); underestimating the difficulty of common-sense reasoning; using anthropomorphic language to mislead the public; and ignoring the importance of embodied cognition. The author argues these fallacies lead to hype cycles and dangerous trade-offs in the AI field, such as prioritizing short-term gains over long-term progress, sacrificing public trust for market excitement, and forgoing responsible validation for speed to market. Ultimately, the author advocates for a synthesis of the 'cognitive paradigm' and the 'computationalist paradigm', infusing current AI practices with scientific principles for safer and more responsible AI development.

(blog.apiad.net)

AI

Unearthing Lost Commodore 64 Master Tapes: A Retro Gaming Archaeology

2025-03-13

Unearthing Lost Commodore 64 Master Tapes: A Retro Gaming Archaeology

This article recounts the discovery and restoration of a vast collection of Commodore 64 game master tapes and disks, including rare materials from legendary programmer Gary J. Sabin. The find sheds light on the behind-the-scenes work of 80s game development, from the creation of loader music and the hectic process of mastering games to amusing development blunders. It's a fascinating blend of tech archaeology and nostalgic retro gaming history.

(spillhistorie.no)

Game

California's Abandoned Power Lines: A Ticking Time Bomb?

2025-02-24

California's Abandoned Power Lines: A Ticking Time Bomb?

Across drought-stricken California, unused high-voltage power lines pose a significant wildfire risk. Recent fires, including the Eaton Fire which killed 17, have been linked to these dormant lines. The state lacks a comprehensive inventory of these lines, and utilities are slow to remove them, even after de-energization, due to potential re-energization through electromagnetic induction. This raises concerns about utility responsibility, regulatory oversight, and the need for improved management of these lines to mitigate future wildfire risks. Lawsuits and investigations are underway, highlighting the lack of clear guidelines and proactive measures to address this potentially devastating problem.

(finance.yahoo.com)

Tech wildfire risk power lines

Blazing Fast Windows 9x Installation: 90 Seconds or Less!

2025-03-31

Blazing Fast Windows 9x Installation: 90 Seconds or Less!

Tired of slow Windows 98 installations? Windows 9x QuickInstall is here! This project leverages Linux and a custom installer to package an already installed Windows 98 system into an optimized ISO image, enabling installation in roughly 60-90 seconds. It supports Windows 98, Windows 98 SE, and Windows ME, and allows for flexible addition of drivers and tools. While building the ISO is more involved than using nLite, the increased customizability makes it perfect for users who prioritize speed and highly tailored installations.

(github.com)

Development fast installation ISO image

The Rise of China's Super Apps: Strategic Choice, Not Cultural Preference

2025-07-06

The Rise of China's Super Apps: Strategic Choice, Not Cultural Preference

The rise of super apps in China wasn't driven by user preference for convenience, but rather a confluence of unique market conditions. The article highlights China's mobile-first internet environment, where mobile apps dominated from the start, unlike the West's desktop-first approach. Tencent's WeChat and Alibaba's Alipay emerged to fill market gaps, not necessarily to optimize user experience. Fierce competition and a 'walled garden' strategy further incentivized integrating diverse services into single apps. Low consumer spending power also pushed companies to maximize revenue per user. Therefore, the super app model is a strategic response to specific market conditions, not cultural preference, and shouldn't be blindly copied by companies in other countries.

(www.haebom.dev)

Tech super apps WeChat China's mobile internet

Make Ubuntu Packages 90% Faster: A Tale of Recompilation and Allocators

2025-03-19

Make Ubuntu Packages 90% Faster: A Tale of Recompilation and Allocators

This post details how recompiling the jq source package used by Ubuntu resulted in a staggering 90% performance improvement. The author benchmarked against a 500MB GeoJSON file. Simply rebuilding the package yielded a small but noticeable speedup. Further optimizations included using clang with better flags (-O3, -flto, -DNDEBUG), which provided a 20% boost. Switching to the TCMalloc allocator improved performance by another 40%. Finally, using mimalloc, either dynamically loaded or integrated during the rebuild, resulted in the remarkable 90% speed increase. The recompiled jq with mimalloc is nearly twice as fast as the default Ubuntu package in various tests.

(gist.github.com)

Development compilation optimization memory allocation

Reaktiv: A Reactive Programming Library for Python

2025-01-31

Reaktiv: A Reactive Programming Library for Python

Reaktiv is a reactive programming library for Python, inspired by Angular's reactivity model and featuring first-class async/await support. It simplifies building and managing data-dependent signals, automatically updating dependencies when data changes. With a straightforward API, Reaktiv supports both synchronous and asynchronous contexts, boasts automatic dependency tracking, zero external dependencies, and efficient memory management, significantly reducing the complexity of asynchronous programming.

(github.com)

Development reactive programming

From Johnny Appleseed to Sewage Treatment: A History of Water Management

2025-05-01

From Johnny Appleseed to Sewage Treatment: A History of Water Management

This article begins with the story of Johnny Appleseed, exploring humanity's millennia-long struggle with water resource utilization and management. Appleseed's apple trees weren't for eating, but for cider—a crucial public health measure in early America, providing a safer alternative to polluted water. This introduces the central theme: accessing and treating clean water has always been a monumental challenge. The article traces the history from the sophisticated drainage systems of ancient Mohenjo-daro, to Roman aqueducts and sewers, and the evolution of urban sewage treatment post-Industrial Revolution. It reveals the tension between technological advancements and societal management. While modern sewage treatment boasts three-stage processes, corruption, inefficiency, and underinvestment remain major obstacles globally, demanding urgent attention.

(www.thenewatlantis.com)

Tech water resources sewage treatment

Dumac: Significant Performance Improvements in a macOS Disk Usage Tool

2025-08-11

Dumac, a macOS disk usage utility faster than `du -sh`, leverages the macOS-specific `getattrlistbulk` syscall. After incorporating community feedback, the author boosted performance by ~33% by switching from Tokio to Rayon for improved parallelism and optimizing inode hash-set sharding. Addressing inode contention through a refined sharding strategy yielded further speed gains.

(healeycodes.com)

Development

The Last Months with Patricia Highsmith: A Young Assistant's Memoir

2025-06-15

The Last Months with Patricia Highsmith: A Young Assistant's Memoir

The author recounts their experience as Patricia Highsmith's assistant during the novelist's final months, a time filled with suspense and complex emotions. Beginning with a chance encounter in Zurich, the author is drawn into Highsmith's unique world in Tegna, Switzerland. Highsmith's eccentric personality, frugal nature, and ambivalent treatment of the author create a sense of unease. Yet, through the mundane tasks and interactions, the author gradually uncovers the deep loneliness and yearning for love within the legendary writer, alongside her struggles with self-acceptance. This brief but profound experience provides a deeper understanding of the acclaimed author and offers fresh insight into the complexities of life and human nature.

(yalereview.org)

Misc author Patricia Highsmith

Tropical Trees Thrive After Lightning Strikes: A New Discovery

2025-03-28

Tropical Trees Thrive After Lightning Strikes: A New Discovery

A new study reveals that the Dipteryx oleifera tree, native to Central America, not only survives lightning strikes but actually benefits from them. Lightning strikes eliminate competing vegetation and parasitic vines, giving the D. oleifera trees more sunlight and nutrients. This leads to a 14-fold increase in reproductive success. Researchers hypothesize that these trees may have evolved to attract lightning. This discovery sheds light on the underappreciated role of lightning in shaping forest ecosystems and has implications for tropical reforestation efforts.

(www.caryinstitute.org)

Tech lightning tropical trees

compile_flagz: Boosting C/C++ IDE Support in Zig Build Systems

2025-09-13

Zig's build system offers powerful cross-compilation capabilities for C/C++ projects, but editor support often lags due to missing include paths. compile_flagz addresses this by generating a `compile_flags.txt` file, a standard format used by language servers like clangd. This file provides the necessary compilation settings, enabling features like code completion and error highlighting. The author details its usage and implementation, showcasing its effectiveness in a game decompilation project (ROLLER). A quick start guide is also provided.

(simonhartcher.com)

Development

The Centuries-Old Papal Election Ritual: A Blend of Tradition and Intrigue

2025-05-08

The Centuries-Old Papal Election Ritual: A Blend of Tradition and Intrigue

The papal election follows a centuries-old tradition. Nine cardinals are randomly selected for specific roles: three scrutineers oversee the voting, three infirmarii collect votes from the sick, and three revisers verify the results. Cardinals cast their ballots in order of seniority. Ballots are meticulously checked and counted, ensuring the number matches the electors. The scrutineers then read each name aloud, sewing the ballots together. Finally, the color of the smoke from the burning ballots signals the world whether a new pope has been elected.

(www.cnn.com)

Misc Papal Election Religious Ritual Historical Tradition

Perl Unveils New Camel Logo

2024-12-23

After years of discussion and design, Perl finally has a new official logo: a friendly camel. Designed by Zach Roszczewski and refined through feedback from numerous community members, the logo is released under a CC-BY license. It aims to represent the Perl language and its community, encouraging wider adoption. While not mandatory, the logo seeks to unify the community's image and is expected to be used on platforms like perl.com and metacpan.org in the future.

(perladvent.org)

Development

Caddy: The Secure Web Server Endorsed by Academia

2025-02-16

Caddy: The Secure Web Server Endorsed by Academia

Caddy web server is highly recommended by academic and industry experts for its security defaults, best practices, and uniquely advanced feature set. Peer-reviewed journal articles highlight Caddy's near-ubiquitous HTTPS deployment and use of modern TLS configurations, surpassing other popular servers in features like session ticket key rotation. This makes Caddy a secure, user-friendly, and noteworthy choice for web servers.

(caddyserver.com)

Development

Elegant Value Objects in Ruby: A Deep Dive into the `Data` Class

2025-03-23

Elegant Value Objects in Ruby: A Deep Dive into the `Data` Class

This article explores creating value objects in Ruby, advocating for the modern `Data` class. `Data` offers a convenient way to define immutable, value-equal objects, supporting various initialization methods including keyword arguments, positional arguments, and hash-like forms. `Data` objects are inherently immutable, comparable by value and type, and allow defining custom methods, enhancing code readability and maintainability. The article compares `Data` with `Struct`, highlighting `Data`'s immutability advantage and addressing handling the mutability of nested objects.

(allaboutcoding.ghinda.com)

Development Data Class

Ambulance Chasing After a 911 Call: Capitalism's Dark Side?

2025-01-31

Ambulance Chasing After a 911 Call: Capitalism's Dark Side?

A false alarm at 3 AM led to a fire department visit, ultimately revealing a faulty HVAC system. Hours later, a Servpro representative aggressively solicited cleanup services. The author suspects their 911 call information, likely accessible via platforms like PulsePoint, was used to generate a sales lead. This incident highlights a disturbing trend of exploiting emergencies for profit, raising concerns about consumer privacy and the ethical implications of data sharing.

(a.wholelottanothing.org)

Misc disaster capitalism

Turning Urine into Bone: A Biotech Breakthrough

2025-06-28

Turning Urine into Bone: A Biotech Breakthrough

Researchers from Lawrence Berkeley National Laboratory, UC Irvine, and UIUC have engineered yeast to convert human urine into hydroxyapatite, a valuable mineral used in bone and tooth repair. This cost-effective process not only provides a sustainable source of hydroxyapatite but also offers a solution for reducing wastewater treatment costs and creating fertilizer. The modified yeast, dubbed 'osteoyeast', efficiently extracts minerals from urine, mimicking the natural bone-building process. This 'pee-cycling' approach promises a significant environmental and economic impact.

(newscenter.lbl.gov)

Tech

France Slaps Apple with €150M Fine Over App Tracking Transparency

2025-03-31

France Slaps Apple with €150M Fine Over App Tracking Transparency

France's competition authority fined Apple €150 million for violating competition law with its App Tracking Transparency (ATT) framework. The authority argues that ATT disproportionately harms smaller publishers because Apple's own ad tracking requires only single consent, while others need double consent. While the fine is insignificant to Apple's revenue, Apple must modify ATT to comply. Apple maintains that ATT is consistent for all developers and enjoys broad support.

(arstechnica.com)

Tech

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