Popular：
Virtualization DNS security formal verification reachability analysis compiler errors macro conflict web extension development framework Bitmap Graphics API inconsistencies All Tags

Right to Repair Bills Filed in All 50 US States

2025-02-24
Right to Repair Bills Filed in All 50 US States

After eleven years of advocacy, the Right to Repair movement has achieved a major victory: legislation has been introduced in all 50 US states, granting consumers the right to repair their own electronics and appliances. This grassroots effort, supported by repair professionals, farmers, students, and lawmakers, has seen five states already pass Right to Repair laws, covering one-fifth of the US population. This success highlights growing consumer demand for repairable products and has even led major tech companies like Google and Apple to support some of the legislation.

Read more
(www.ifixit.com)
Tech

Issues with Object-Oriented Programming in Guile

2024-12-30

This article explores the discrepancies between Guile Scheme's object-oriented programming system, GOOPS, and Common Lisp's Object System (CLOS), highlighting GOOPS's shortcomings. GOOPS lacks the elegance and robustness of CLOS in several key areas: setter specialization doesn't compose with inheritance, it lacks before/after/around method qualifiers, method combination algorithms are not controllable, method argument specialization is limited, keyword arguments are unsupported, and documentation strings are absent. The author suggests improvements such as mimicking CLOS behavior, adding method qualifiers, and enhancing method argument specialization to improve code elegance and reduce bugs.

Read more
(dthompson.us)
Development

The Brutal Truth About Dating Apps: An Insider's Perspective

2025-02-04

An insider who spent months working at a dating app reveals industry secrets. The article details user ranking mechanisms, user behavior, retention rates, monetization models, and technological challenges. For instance, male users have significantly lower match rates than females, and users heavily rely on profile pictures; retention is significantly impacted by user behavior, but not all improvements boost retention; monetization primarily relies on male users paying for extra likes. The author argues that the core problem with dating apps lies in user expectations, not the product itself.

Read more
(blog.luap.info)
Misc dating apps user behavior retention

Global Variables: Not the Devil You Think They Are

2025-02-03

This article uses a simple counter example to demonstrate how avoiding global variables can unexpectedly lead to bugs. The author argues that the problem isn't global variables themselves, but the hidden nature of data access – "action at a distance". Different variable types are analyzed, and the article explores ways to use global variables appropriately in specific scenarios, such as encapsulating them into functions or using types that only allow append operations, thus preventing issues caused by "action at a distance".

Read more
(codestyleandtaste.com)
Development global variables programming bugs data access

15x Power Boost for Solar Thermoelectric Generators via Synergistic Spectral and Thermal Management

2025-08-30
15x Power Boost for Solar Thermoelectric Generators via Synergistic Spectral and Thermal Management

Researchers significantly improved the power output of solar thermoelectric generators (STEGs) by optimizing both hot- and cold-side thermal management. They employed a selective solar absorber (SSA) to maximize solar energy absorption and minimize radiative losses, while using an air film to reduce convective losses on the hot side. On the cold side, a micro-dissipator (μ-dissipator) was designed for efficient heat dissipation through convection and radiation. Experiments demonstrated a 15x peak power enhancement when combining both hot- and cold-side optimizations, enough to power an LED, showcasing the potential for applications in IoT and beyond.

Read more
(www.nature.com)
Tech Thermoelectric Generator Solar Energy Thermal Management

Delta Air Lines Clarifies AI-Powered Pricing: No Personalized Pricing, They Say

2025-08-05
Delta Air Lines Clarifies AI-Powered Pricing: No Personalized Pricing, They Say

Delta Air Lines is clarifying its AI-assisted dynamic pricing model following scrutiny over recent comments. While a previous statement suggested AI would personalize pricing, Delta now insists it uses aggregated data to inform analysts, responding to competitor pricing and market trends to maximize overall revenue, not individual customer targeting. This clarification comes in response to concerns raised by lawmakers about potential price discrimination. The airline emphasizes it doesn't share personal data with its AI provider, Fetcherr, but the issue highlights growing ethical and regulatory questions around AI's role in pricing.

Read more
(www.theverge.com)
Tech AI pricing Delta Air Lines price discrimination

Uranus: Not as Cold and Dead as We Thought

2025-08-17
Uranus: Not as Cold and Dead as We Thought

A new study reveals Uranus possesses internal heat, contradicting previous observations. Researchers found Uranus radiates more heat than it receives from the sun, indicating a slow release of residual heat from its formation. This discovery enhances our understanding of Uranus's origin and evolution, informing future exploration missions and potentially providing insights into Earth's climate and atmospheric processes. While Uranus's internal heat is weaker than other gas giants, its energy levels fluctuate with its lengthy 20-year seasons, likely due to its eccentric orbit and tilted spin. This research significantly supports NASA's planned Uranus mission and offers novel approaches to studying radiant energy in other planets, both within and beyond our solar system.

Read more
(www.sciencedaily.com)
Tech Uranus Internal Heat

The American Dream: A Tech Founder's Urgent Plea

2025-01-09
The American Dream: A Tech Founder's Urgent Plea

Jeff Atwood, co-founder of Stack Overflow and Discourse, expresses deep concern about the fading American Dream. He cites soaring costs of housing, healthcare, and education, widening wealth inequality, and low voter turnout as threats to its survival. In response, he announces his family's commitment to donate a significant portion of their wealth: immediate aid to vulnerable groups and long-term investment in projects aiming for social equity and democratic reform. The article weaves together his personal journey, highlighting the challenges and hopes facing American society, and urges collective action to safeguard the ideal of the American Dream.

Read more
(blog.codinghorror.com)
Startup Wealth Inequality

Emulating a GPU on a CPU Using Finite Field Assembly

2025-01-17
Emulating a GPU on a CPU Using Finite Field Assembly

This article introduces Finite Field Assembly (FF-asm), a novel programming language enabling GPU emulation on CPUs. FF-asm uses a recursive computing paradigm, bypassing the need for SIMD vectorization or OpenMP parallelization. It achieves massive parallel computation on a CPU by creating a custom mathematical system based on finite field theory and congruences. The article provides step-by-step code examples demonstrating addition and multiplication in FF-asm, showcasing its potential for GPU emulation.

Read more
(leetarxiv.substack.com)
Development GPU emulation finite fields recursive computing

Vacheron Constantin's Solaria: An Eight-Year Masterpiece of Horology

2025-04-12
Vacheron Constantin's Solaria: An Eight-Year Masterpiece of Horology

Unlike the commissioned Berkley Grand Complication, the Solaria is a fully Vacheron-driven project. A single watchmaker was given complete creative freedom and spent eight years crafting this incredible feat of horology. There was no budget, and no price tag is publicly listed, yet the watch is for sale. Officially named “the Premiere”, the program accepts orders, with future examples modified to ensure uniqueness, each boasting a full suite of complications. A complete list of complications will follow, but here are some highlights.

Read more
(www.hodinkee.com)
Misc Watchmaking Vacheron Constantin Solaria

Meru Health: Revolutionizing Healthcare, Tackling Mental Health Challenges

2025-04-01
Meru Health: Revolutionizing Healthcare, Tackling Mental Health Challenges

Founded in 2016, Meru Health aims to help and empower individuals struggling with mental health issues. This diverse team of scientists, engineers, clinicians, and entrepreneurs is dedicated to making treatment for depression, anxiety, and burnout accessible, effective, and outcome-driven. Their mission is deeply personal; driven by founders' losses to depression, they strive to aid those suffering.

Read more
(www.ycombinator.com)
Startup

Open-Source Watermark Segmentation Model from Diffusion Dynamics: Powering clear.photo

2025-04-14
Open-Source Watermark Segmentation Model from Diffusion Dynamics: Powering clear.photo

Diffusion Dynamics has open-sourced the core technology behind its watermark removal product, clear.photo: a watermark segmentation model. This deep learning model generates masks highlighting watermark regions, excelling at segmenting logo-based watermarks. The project provides a complete workflow for training and inference, including dataset generation, model training, and post-processing, and supports fine-tuning on Apple M-series chips. A key feature is its data augmentation strategy which randomizes watermark parameters, leading to robust performance. This aims to provide a clear, easily modifiable baseline for building more complex tools.

Read more
(github.com)
Development watermark removal image segmentation

Passkeys: Convenience vs. Control – A Growing Concern

2025-09-02
Passkeys: Convenience vs. Control – A Growing Concern

The shift towards passkeys as a replacement for usernames and passwords, while aiming for enhanced security, presents underlying issues. The attestation system allows websites to gather detailed device information, enabling governments to restrict users to specific hardware authenticators. Interoperability between password managers is limited, creating vendor lock-in. Sneaky auto-enrollment tactics by services subtly bind users to their ecosystems. The author expresses concern over increasing reliance on tech giants and complex systems, potentially leading to restricted data access, heightened authentication complexity, and ultimately, a loss of user agency.

Read more
(lucumr.pocoo.org)
Tech

Active Storage Dashboard: A Rails Engine for Managing Active Storage

2025-07-14

After 10 years of building Rails applications, the author found managing Active Storage data cumbersome. This led to the creation of Active Storage Dashboard, a mountable Rails engine providing a modern interface for monitoring and managing Active Storage. Features include real-time storage statistics, browsable interfaces, advanced filtering, direct download, orphaned file cleanup, and support for multiple databases and Rails versions. The article delves into the advantages of Rails engines and best practices for building robust engines, covering namespacing, configuration options, documentation, minimizing dependencies, extensibility, error handling, and security.

Read more
(www.panasiti.me)
Development Rails Engine

Implementing State Machines in PostgreSQL for Data Integrity and Advanced Analytics

2025-05-08

This article demonstrates how to implement a finite-state machine (FSM) in PostgreSQL to manage order statuses. By creating an order events table, a state transition function, and a custom aggregate function, the author builds a system that ensures valid order state transitions and prevents invalid operations. Critically, this approach also unlocks advanced analytics capabilities, such as tracking order state history and generating daily order status reports, which is invaluable for applications with large datasets. The author uses an order management system as an example, detailing the implementation steps and showcasing how to leverage the system for data analysis. The resulting system offers both data integrity and powerful analytical tools.

Read more
(felixge.de)
Development

Apple's Password Monitoring Service: A 40% Performance Boost with Swift

2025-06-03
Apple's Password Monitoring Service: A 40% Performance Boost with Swift

Apple's migration of its Password Monitoring service from Java to Swift resulted in a significant performance improvement. The new Swift-based service handles billions of daily requests, boasting a 40% performance increase and improvements in scalability, security, and availability. Driven by Java's limitations in memory management, the switch to Swift leveraged its concise syntax, protocols and generics, robust safety features (like optionals and safe unwrapping), and async/await capabilities for cleaner, safer, and more maintainable code. The result? A dramatic reduction in memory footprint and a freeing up of 50% of Kubernetes cluster capacity.

Read more
(www.swift.org)
Development

Graphene Capacitors Achieve Rapid, High-Depth Modulation of Terahertz Waves

2025-08-20
Graphene Capacitors Achieve Rapid, High-Depth Modulation of Terahertz Waves

Researchers at the University of Cambridge's Cavendish Laboratory have developed a terahertz wave modulator using graphene as a tunable capacitor, achieving unprecedented dynamic range and speed. By embedding nanoscale graphene patches within metamaterial resonators, the device effectively controls terahertz waves, boasting a modulation depth exceeding 99.99% and a speed of 30 MHz. This breakthrough promises to advance technologies in terahertz communication, imaging, and sensing, paving the way for next-generation communication systems beyond 5G and 6G.

Read more
(phys.org)
Tech terahertz modulation

The Broken Incentives of Mass-Market Non-Fiction

2025-02-11

Most mass-market non-fiction books prioritize authorial status and intellectual legitimacy over genuine knowledge dissemination. Authors focus on press tours, interviews, and reviews rather than the book's actual content. This misalignment of incentives leads to a flood of verbose, low-value books polluting the information environment. Readers crave concise, useful essays, not 200-page expansions of a single idea.

Read more
(borretti.me)
Misc non-fiction writing information pollution

TSMC Faces US Government Cooperation Proposals: A Difficult Choice in a Geopolitical Game

2025-02-13
TSMC Faces US Government Cooperation Proposals: A Difficult Choice in a Geopolitical Game

Reports indicate that TSMC is negotiating with the US government on three potential cooperation proposals. These involve setting up an advanced packaging plant in the US, investing in Intel Foundry Services, or letting Intel handle the packaging process for its Arizona plant. While TSMC hasn't publicly commented, its lower capital budget and market reaction suggest a difficult choice: accepting cooperation could harm shareholder interests and lead to legal action; refusing could result in high tariffs and loss of US market share. TSMC's decision under geopolitical pressure will significantly impact the global semiconductor industry.

Read more
(techsoda.substack.com)
Tech

DOS APPEND Command: Bridging the Gap Between Old and New

2024-12-20

While reconstructing the DOS 2.11 source code, the author encountered a challenge: the ancient MASM 1.25 assembler lacked directory support, clashing with modern file organization using a tree structure. To avoid a monolithic directory, the author cleverly employed the DOS APPEND command. APPEND is a TSR (Terminate and Stay Resident) program that intercepts system calls like file opening and searches a predefined path list if the file isn't found in the current directory. This allowed MASM 1.25 to locate files within the hierarchical structure, resolving the incompatibility and highlighting APPEND's surprising utility in specific scenarios.

Read more
(www.os2museum.com)
Development

50-Year-Old Math Conjecture Finally Proven: The McKay Conjecture

2025-02-20
50-Year-Old Math Conjecture Finally Proven: The McKay Conjecture

The McKay Conjecture, a mathematical problem posed in the 1970s concerning finite groups and their Sylow normalizers, has finally been proven by Britta Späth and Michel Cabanes. The conjecture states that a crucial quantity for a finite group is equal to the same quantity for its Sylow normalizer (a much smaller subgroup). This proof, decades in the making, builds upon over a century of work classifying finite groups and involves deep insights into the representation theory of Lie-type groups. It's a monumental achievement in mathematics, simplifying group theory research and potentially leading to practical applications.

Read more
(www.quantamagazine.org)
Misc Conjecture Group Theory

PowerPoint Killed Seven: The Columbia Disaster

2025-08-29
PowerPoint Killed Seven: The Columbia Disaster

The Space Shuttle Columbia disaster of January 16th, 2003, claimed the lives of seven astronauts. An investigation revealed that a piece of foam insulation detached 82 seconds into launch, striking the shuttle's left wing and causing catastrophic damage upon re-entry. The incident highlights the devastating consequences of seemingly minor failures in complex systems, prompting reflection on both spacecraft safety and the effectiveness of communication, in contrast to the often ineffective ‘death by PowerPoint’ presentations.

Read more
(mcdreeamiemusings.com)
Tech Space Shuttle Columbia Space Disaster

Can General-Purpose Robots Reignite the Economies of Germany and Japan?

2025-01-23

This article examines the relative decline of Germany and Japan's economies compared to the US and China since 1995. Jürgen Schmidhuber argues that AI-driven, general-purpose robots may be the key to reversing this trend. He recounts his early research at the Technical University of Munich, highlighting the origins of crucial AI technologies like LSTM and Transformers, and points to Germany's missed opportunities in AI development due to insufficient investment and brain drain. Schmidhuber calls for a national project in Germany to build general-purpose robots capable of performing jobs humans dislike, solving workforce shortages and revitalizing the economy.

Read more
(people.idsia.ch)
Tech Economics

C-Tubes: Revolutionizing 3D Design with Flat Materials

2025-08-22
C-Tubes: Revolutionizing 3D Design with Flat Materials

Researchers at EPFL's Geometric Computing Laboratory have developed C-Tubes, a groundbreaking method for creating strong, lightweight curved structures from flat strips of material. Their algorithm precisely bends and connects these strips, avoiding stretching or wrinkling, resulting in surprisingly stiff and durable tubes. This sustainable approach minimizes waste and opens possibilities in furniture, lighting, architecture, and beyond. C-Tubes promises to revolutionize design and construction, offering a more efficient and environmentally friendly approach to 3D object creation.

Read more
(actu.epfl.ch)
Design

High Schoolers: Time is More Precious Than You Think

2025-06-07
High Schoolers: Time is More Precious Than You Think

A Colorado School of Mines student reflects on the excessive pursuit of high grades and prestigious universities during high school for college applications, arguing that this approach neglects the importance of personal growth during this crucial period. He emphasizes that college isn't the only path to success, and high school should focus on cultivating interests, developing skills, and enjoying youth. These are far more important than college rankings and scores; ultimate success depends on attitude, ideals, and opportunity, not just a university degree.

Read more
(byronsharman.com)
Misc high school education college applications

Thunderbolt 5: A Quantum Leap in Speed and Capability

2025-01-10
Thunderbolt 5: A Quantum Leap in Speed and Capability

Thunderbolt 5 has arrived in 2024, bringing a significant performance boost to laptops and monitors. Compared to Thunderbolt 4, Thunderbolt 5 boasts double the bandwidth (up to 120 Gbps), supports up to 8K displays, and offers up to 240W of charging power. This translates to faster file transfers, support for more powerful external GPUs and AI accelerators, and superior display capabilities. While Thunderbolt 5 ports and cables look similar to Thunderbolt 4, the performance gains are substantial. If you demand top-tier performance, Thunderbolt 5 is worth considering, but its current adoption is still limited, and prices are relatively high.

Read more
(www.tomsguide.com)
Hardware interface performance upgrade

Icelandic Turf Houses: A Journey Through Time

2025-01-22
Icelandic Turf Houses: A Journey Through Time

This article recounts the author's journey through Iceland, visiting several remarkably preserved turf houses, including Laufas and Glaumbaer. These ancient structures, with walls and roofs primarily made of turf, offer excellent insulation thanks to their thick walls. The author details the interior layout, lifestyle within these homes, and the evolution of turf house design over time. The narrative includes a captivating interlude of unexpectedly encountering a traditional music performance in a Glaumbaer turf house. Furthermore, the article highlights other open-air turf house museums, providing a glimpse into Iceland's unique cultural heritage.

Read more
(rachelsruminations.com)
Tech turf houses historical architecture

Breakthrough: Lithium-Sulfur Battery Retains 80% Capacity After 25,000 Cycles

2025-02-21
Breakthrough: Lithium-Sulfur Battery Retains 80% Capacity After 25,000 Cycles

A Chinese research team has developed a revolutionary lithium-sulfur battery that retains 80% of its charge capacity after an astounding 25,000 charge-discharge cycles—significantly outperforming traditional lithium-ion batteries, which typically degrade after 1,000 cycles. This breakthrough utilizes a novel sulfur-based solid-state electrode composed of sulfur, boron, lithium, phosphorus, and iodine. The addition of iodine accelerates redox reactions, leading to faster charging and discharging. While promising, further research is needed to improve energy density and explore alternative lightweight materials.

Read more
(techxplore.com)
Tech lithium-sulfur battery solid-state battery battery technology

Oscars: Thanking God or Weinstein? Data Reveals the Truth

2025-02-27
Oscars: Thanking God or Weinstein? Data Reveals the Truth

This article analyzes 1,884 Oscar acceptance speeches to uncover the unspoken rules and relationships behind the Academy Awards. The data reveals a growing trend of winners thanking more people over time, with actresses thanking the most on average. While Harvey Weinstein was once perceived as having immense influence at the Oscars, the data shows that God was thanked far more often than Weinstein. However, Steven Spielberg even surpassed God in thanks during certain periods, reflecting his immense influence in Hollywood.

Read more
(stephenfollows.com)
Misc Oscars
1 2 … 273 274 275 277 279 280 281 … 596 597