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Mysterious `runtabloid` Program: Huge Performance Discrepancy

2025-05-24

Mysterious `runtabloid` Program: Huge Performance Discrepancy

The `runtabloid` program exhibits a striking performance difference when processing different programs. Running the `prog` program yields an almost instantaneous result of 110. However, running `fibo` and `fibo2` (both calculating Fibonacci numbers) takes a significantly longer time, 27.589 seconds and 56.749 seconds respectively. What is the secret behind this disparity? Is it algorithmic inefficiency, or are there differences in program design leading to such a massive performance gap? Further analysis of the code and execution flow might reveal the answer.

(github.com)

Development program performance fibonacci sequence

Grid Failure in Extreme Heat: Uncontrolled Grid Reactance Due to Increasingly Complex Corona Discharge

2025-04-29

A recent grid failure during extreme heat is attributed to uncontrolled grid reactance caused by corona discharge. High temperatures and low humidity exacerbated corona discharge on high-voltage transmission lines, introducing unexpected reactance that overwhelmed traditional grid stability control systems. The modern grid's rapid response capabilities, enabled by inverter-based energy storage, generation, and transmission, proved counterproductive in this case, amplifying grid imbalances and leading to cascading failures and a complete blackout. As climate change intensifies, such events may become more frequent, demanding improved models and mitigation strategies to ensure grid stability.

(physics.stackexchange.com)

Tech grid failure corona discharge

Quantum Gravity Sensor Enables GPS-Free Navigation

2025-07-31

Quantum Gravity Sensor Enables GPS-Free Navigation

Q-CTRL, an Australian company, has developed a novel quantum gravity sensor that measures gravity changes by detecting variations in the travel time of falling atoms. Tested aboard a Royal Australian Navy vessel, the sensor successfully enabled 144 hours of GPS-free navigation. This technology overcomes the cumulative error problem of traditional inertial navigation systems and is jam-resistant and spoof-proof, offering a robust alternative for GPS-reliant sectors like maritime and transportation, especially in polar regions or areas with GPS interference. While currently large, future miniaturization promises broader applications.

(spectrum.ieee.org)

Tech quantum sensor gravity measurement

Non-Euclidean Mazes: Generating Mazes on Penrose Tilings

2024-12-31

Blogger Justin Pombrio shares his maze generation algorithm based on Penrose tilings. Unlike traditional mazes built on regular grids, the aperiodic nature of Penrose tilings results in unique, non-repeating mazes filled with circles and stars, featuring ten different wall angles. While the generation algorithm is inefficient, the resulting mazes offer a visually striking and challenging experience.

(justinpombrio.net)

Misc Penrose tilings maze generation non-Euclidean geometry

arXivLabs: Experimental Projects with Community Collaboration

2025-04-14

arXivLabs is a framework enabling collaborators to develop and share new arXiv features directly on the website. Individuals and organizations involved 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. Got an idea for a valuable community project? Learn more about arXivLabs.

(arxiv.org)

Development

DropZap World: 120 Levels of Laser-Powered Block-Dropping Fun

2025-06-18

DropZap World: 120 Levels of Laser-Powered Block-Dropping Fun

DropZap World, from the creator of the original DropZap games, offers a fresh take on falling block puzzles. This game features 120 challenging levels filled with lasers, mirrors, color-matching mechanics, and a satisfying level progression system. Available across iOS, iPadOS, tvOS, and macOS with iCloud sync, DropZap World promises hours of laser-zapping entertainment for both newcomers and veteran players.

(apps.apple.com)

Game lasers

Rust's Ownership System: Preventing Memory Errors at Compile Time

2025-02-15

Rust's Ownership System: Preventing Memory Errors at Compile Time

Rust prevents memory management errors at compile time through its ownership system and RAII (Resource Acquisition Is Initialization). Each value has only one owner; ownership can be moved between variables, but a given object cannot be mutably referenced in more than one place at a time. Example code demonstrates ownership transfer: after the ownership of variable `a` is moved to `_b`, accessing `a` again results in a compile-time error, ensuring memory safety. This contrasts with traditional garbage collection; Rust guarantees memory safety through compile-time checks, resulting in improved performance and reliability.

(www.infoworld.com)

Development Ownership

Tesla Used Car Prices Plummet Amidst Growing Competition

2025-03-10

Tesla Used Car Prices Plummet Amidst Growing Competition

The used car market is booming! Driven by historically high new car prices, consumers are flocking to the pre-owned market for better deals. Used Tesla Model Ys, in particular, have seen prices drop over $6,000 in the past year, with some low-mileage models available for under $30,000. Used Model 3s are even cheaper, with some high-mileage options dipping below $15,000. This trend is linked to the launch of new Tesla models, increased competition, and shifting consumer search preferences. A surge in rival EV manufacturers is giving consumers more choices, challenging Tesla's market dominance.

(www.forbes.com)

Tech

Ronin the Rat: A World Record for Landmine Detection

2025-04-14

Ronin the Rat: A World Record for Landmine Detection

Ronin, an African giant pouched rat, has set a new world record for landmine detection. Between August 2021 and February 2025, he located 109 landmines and 15 unexploded ordnance in Cambodia. Ronin's incredible sense of smell highlights the vital role animals can play in clearing landmines, a significant threat in post-conflict zones. His achievement underscores the ongoing need for landmine clearance efforts, given the millions of unexploded devices still buried worldwide. Ronin's work with APOPO, a Belgian nonprofit, showcases the effectiveness of using rats for this dangerous task.

(www.cnn.com)

Tech landmine detection animal

Lean: Formalizing Mathematics as Code

2025-07-31

$Lean: Formalizing Mathematics as Code$

Lean is a programming language primarily used by mathematicians to formalize mathematics. It allows mathematicians to treat mathematics as code, breaking it into structures, theorems, and proofs, and sharing them on GitHub. The article uses a simple example, proving 2=2, to introduce Lean's syntax and basic concepts like tactics. It demonstrates how tactics are used to prove or disprove mathematical statements. A fictional axiom, '2=3', illustrates how a faulty axiom can lead to proving anything, highlighting the importance of formal verification. The article concludes by mentioning the ongoing Lean formalization of Fermat's Last Theorem as a testament to Lean's power.

(overreacted.io)

Development

1984: The First Man vs. Machine Poker Showdown You've Never Heard Of

2025-05-09

1984: The First Man vs. Machine Poker Showdown You've Never Heard Of

Before Polaris in 2007, there was Orac. In 1984, poker legend Mike Caro challenged Doyle Brunson and Tom McEvoy with his Apple II Plus program, a feat largely forgotten. This article unearths the story, revealing correspondence with Binion's Horseshoe and Apple, detailing the event and its surprising results. Orac lost to McEvoy but held its own against Brunson, showcasing early AI's foray into poker.

(www.poker.org)

Game Poker

arXivLabs: Community Collaboration on Experimental Projects

2025-08-22

arXivLabs is a framework enabling collaborators to develop and share new arXiv features directly on the website. Individuals and organizations involved embrace openness, community, excellence, and user data privacy. arXiv is committed to these values and only partners with those who share them. Got an idea to enhance the arXiv community? Explore arXivLabs!

(arxiv.org)

Tech

Business Insider's AI-Powered Reading List Goes Wrong

2025-06-02

Business Insider's AI-Powered Reading List Goes Wrong

Business Insider, while encouraging AI use, apologized last year for accidentally recommending non-existent books generated by AI. A reading list intended to help staff understand good business journalism included several fabricated titles, such as a nonexistent Target CEO's memoir, a Jensen Huang biography, and a Mark Zuckerberg autobiography. This incident highlights the potential risks and need for rigorous vetting of AI tools in content creation, serving as a cautionary tale for news organizations using AI.

(www.semafor.com)

Tech Business Insider

Interactive Neural Forest World in Your Browser

2025-04-25

The author trained a neural network to transform a video of a forest trail, captured with a phone, into an interactive virtual world explorable in a web browser. Unlike traditional video games, this world relies not on pre-defined geometry, lighting, and animations, but solely on a neural network generating new images based on previous images and control inputs. Overcoming early model limitations, the author improved the training method and network architecture to achieve a relatively smooth interactive experience. This showcases a novel approach to generating virtual worlds using neural networks, promising a future of more realistic and convenient world building.

(madebyoll.in)

Game Neural Network

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

From Inkjet Printer to Pacemaker: The Legacy of Rune Elmqvist

2025-09-02

From Inkjet Printer to Pacemaker: The Legacy of Rune Elmqvist

Rune Elmqvist, a Swedish engineer and qualified physician, chose invention over medical practice, leaving behind a remarkable legacy. In 1949, he patented the Mingograph, the world's first inkjet printer, using a movable nozzle to deposit electrostatically controlled ink droplets onto paper. This innovation, initially used for real-time recording of electrocardiograms and electroencephalograms, laid the foundation for modern inkjet technology. More significantly, Elmqvist collaborated on the first fully implantable pacemaker, a life-saving device that has transformed cardiology. His story highlights not only technical brilliance but also the profound impact of engineering solutions on human lives, underscored by the compelling narrative of his creation of the pacemaker driven by a wife's desperate plea for her ailing husband.

(spectrum.ieee.org)

Tech inkjet printing

Swift 6.2: Concurrency Refinements and Practical Enhancements

2025-05-09

Swift 6.2: Concurrency Refinements and Practical Enhancements

Swift 6.2 is a massive release, boasting a plethora of additions and improvements, with a significant focus on refining Swift concurrency and adding practical features. The update simplifies the concurrency learning curve; for example, the `-default-isolation MainActor` compiler flag allows developers to default to running code on the main actor, switching to concurrency only when necessary. Other highlights include raw identifiers, default values in string interpolation, `enumerated()` conforming to `Collection`, and significant boosts to Swift Testing with exit tests and attachments. These enhancements promise to make Swift development more efficient and user-friendly.

(www.hackingwithswift.com)

Development Language Improvements

Gracefully Hiding JavaScript-Dependent Elements

2025-04-06

Gracefully Hiding JavaScript-Dependent Elements

This article explores three elegant ways to hide web elements that rely on JavaScript. The first method dynamically adds a class name using JavaScript, but it's not concise enough. The second method uses the `` and `` tags to directly hide elements in CSS, but it has higher maintenance costs. The third method, and the recommended approach, uses a generic class name `d-js-required` along with the `<noscript>` and `<style>` tags. This only requires modifying a single CSS rule to hide all JavaScript-dependent elements, offering a clean and efficient solution.

(0xda.de)

Development progressive enhancement

Linux Prepper Podcast Update: Open Source Projects, Community Events, and Sponsors

2025-03-07

Linux Prepper Podcast Update: Open Source Projects, Community Events, and Sponsors

This Linux Prepper podcast update covers several key areas. First, it announces a new sponsor, ameriDroid, and provides ways to support the show. Then, it highlights open-source projects like the Librewolf browser, PixelFed (a federated, FOSS Instagram alternative), and Loops (a federated, FOSS TikTok alternative). Finally, it shares audience feedback and previews an interview with Hungry Bogart on the podcast's origins, along with the Pimox 7 project (for learning Proxmox on arm64 hardware). Listeners can engage via Matrix chat, feedback forms, and email.

(podcast.james.network)

Development

Mathematical Modeling Reveals Just How Bad the Dreidel Game Is

2024-12-18

Mathematical Modeling Reveals Just How Bad the Dreidel Game Is

Last year, the author used the PRISM probabilistic modeling language to model the traditional holiday game Dreidel, proving its lack of fun. This year, he refined the model to simulate the entire game until its conclusion. The new model corrects the previous flaw of only simulating the elimination of the first player and improves the calculation logic for betting and player elimination. Through model simulation, the author found that, on average, a four-player game takes 760 spins to end, and the longest can even exceed 6 hours. This fully proves that the Dreidel game is long, tedious, and frustrating.

(buttondown.com)

Game probabilistic modeling game analysis

Hiring: High-Energy Engineer to Productionize AI Agents

2025-06-04

Hiring: High-Energy Engineer to Productionize AI Agents

A company is seeking a high-energy, resourceful engineer to make AI agents production-ready. The role involves building accurate, reliable, and secure AI agents using cutting-edge models and frameworks. While there are no hard requirements, ideal candidates possess experience with AI-native development workflows, a proven track record of product launches, strong communication skills, and a collaborative spirit. Applicants must submit a one-minute video introducing themselves and highlighting a passion. AI-generated videos or applications without a video will not be considered.

(www.ycombinator.com)

Development

LLMs: Opportunities and Challenges Await

2025-08-29

Before a short break, the author shares some thoughts on the current state of LLMs and AI. He points out flaws in current surveys on LLMs' impact on software development, arguing they neglect the varied workflows of LLM usage. The author believes the future of LLMs is unpredictable, encouraging experimentation and shared experiences. He also discusses the inevitability of an AI bubble and the 'hallucination' characteristic of LLMs, stressing the importance of asking questions multiple times for validation. Finally, the author warns of the security risks posed by LLMs, particularly the vulnerabilities of agents operating within browsers.

(martinfowler.com)

AI

German UBI Experiment: Full-Time Work Continues, Happiness Increases

2025-04-12

German UBI Experiment: Full-Time Work Continues, Happiness Increases

A three-year German experiment provided 122 participants with a monthly unconditional basic income of €1,200. Surprisingly, participants didn't reduce their working hours; instead, job satisfaction increased, and they were more likely to change jobs or pursue further education. The study showed that unconditional basic income didn't decrease economic activity but improved participants' mental and physical health, particularly for women, who experienced a greater sense of autonomy. This experiment challenges the conventional wisdom that basic income discourages work and offers valuable insights for future policy decisions.

(www.cnn.com)

Misc

Xerox's $1.5B Gamble: Acquiring Lexmark in a Shrinking Print Market

2025-07-02

Xerox's $1.5B Gamble: Acquiring Lexmark in a Shrinking Print Market

In a surprising move, Xerox has acquired Lexmark for $1.5 billion, a deal that includes debt and liabilities. This acquisition pulls Lexmark from Chinese ownership and into a restructured Xerox, positioning the company as a top player in print services. However, in a world increasingly dominated by digital workflows, Xerox's bet on the declining print market is a risky one. While Lexmark brings a strong global presence and managed services business, the success of this merger hinges on the continued relevance of paper documents in industries like healthcare and finance. It's a bold gamble in a fading industry, a fight for dominance in the remaining enterprise printing sector.

(nerds.xyz)

Tech M&A

Global Americana: A World Tour of Roots Music

2025-05-02

This article explores the globalization of 'Americana' music. Originating in the US as a genre blending various American roots music styles like country, bluegrass, and blues, Americana has seen a rise in non-American artists creating and performing music in this style. From Finland to Argentina, musicians are incorporating their own cultural influences into the genre. The article delves into the definition of Americana, its development in different countries, and artists' perspectives on the label itself. Ultimately, it concludes that regardless of labels, the essence of music lies in creation and expression.

(deeprootsmag.org)

Misc Americana music music genre

NZ Sheep Farmer Predicted AI Doom 161 Years Ago

2025-01-14

NZ Sheep Farmer Predicted AI Doom 161 Years Ago

In 1863, New Zealand sheep farmer Samuel Butler penned a letter predicting a future where AI could dominate humanity. Drawing parallels between the rapid advancement of machinery and Darwinian evolution, he envisioned machines evolving consciousness and supplanting humans as Earth's dominant species. His concerns, including machine consciousness, self-replication, and humanity losing control of its creations, resonate in later works like Asimov's *The Evitable Conflict* and *The Matrix*. Butler's prescient warnings, made in a time with almost no computing technology, highlight enduring anxieties about AI safety and strikingly mirror current concerns about advanced AI's potential risks.

(arstechnica.com)

Tech

C Code with Only `#define` Directives: Black Magic Fire Animation

2025-02-20

This article details how the author created a fire animation program using only the `#define` directive in C. This seemingly impossible task was accomplished by cleverly using the text replacement capabilities of macro definitions, token concatenation, and recursive call techniques. The result is a simulation of fire burning and spreading, demonstrating the power of the C preprocessor and its 'Turing completeness'. The article also highlights the potential risks and problems of improper macro use.

(ssloy.github.io)

Development preprocessor

SmolLM3: A Tiny, Multilingual, Long-Context Reasoner

2025-07-09

SmolLM3: A Tiny, Multilingual, Long-Context Reasoner

SmolLM3 is a fully open-source 3B parameter multilingual language model that strikes a compelling balance between efficiency and performance. Outperforming Llama-3.2-3B and Qwen2.5-3B on various benchmarks, it even competes with larger 4B parameter models. Supporting 6 languages and boasting a context length of up to 128k tokens, SmolLM3 features a unique dual-mode reasoning capability (think/no_think). Beyond the model itself, the researchers are releasing the complete engineering blueprint, including architecture details, data mixtures, and training methodology—a valuable resource for anyone building or studying models at this scale.

(huggingface.co)

AI long context

Model Context Protocol (MCP): The USB-C Moment for AI?

2025-03-26

Model Context Protocol (MCP): The USB-C Moment for AI?

Anthropic's Model Context Protocol (MCP), released in late 2024, is taking the AI world by storm. Think of it as the USB-C of AI integrations: it allows Large Language Models (LLMs) like Claude or ChatGPT to seamlessly communicate with external data sources and tools (Obsidian, Gmail, calendars, etc.) without needing a million custom integrations. MCP uses a three-tier architecture—hosts, clients, and servers—to enable secure and reliable data access and action triggering, significantly simplifying development and spawning innovative applications. Examples include connecting LLMs to personal databases, code repositories, and even real-time stock data. MCP's open-source nature has made it a hot topic in the developer community, integrated into numerous AI apps, and heralds a revolutionary shift in how we interact with AI applications.

(pieces.app)

AI

The Quirky Tales of Green Bank Observatory: Old Cars, Starry Skies, and RFI Battles

2025-03-10

The Quirky Tales of Green Bank Observatory: Old Cars, Starry Skies, and RFI Battles

This concluding part of a series recounts the unique challenges and triumphs of the National Radio Astronomy Observatory (NRAO) in Green Bank, West Virginia. From its fleet of antique diesel cars, necessary to avoid radio frequency interference (RFI), to its simple teaching telescope used for educational outreach, the story reveals the dedication and ingenuity of NRAO's staff. The article details the intricacies of the observatory's 40-foot telescope, the massive Green Bank Telescope (GBT), and the RFI monitoring station, while highlighting the harmonious relationship cultivated between NRAO and the local community, even amidst historical conflicts and ongoing battles against RFI from various sources, including military aircraft.

(raoulpop.com)

Tech Radio Astronomy

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