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Storing Times for Human Events: Best Practices and Challenges

2024-12-12
Storing Times for Human Events: Best Practices and Challenges

This blog post discusses best practices for storing event times on event websites. The author argues that directly storing UTC time loses crucial information, such as the user's original intent and location. A better approach is to store the user's intended time and the event location, then derive the UTC time. Examples like user error, international timezone adjustments, and the 2007 Microsoft Exchange DST update illustrate the importance of storing the user's intended time. The author recommends designing a clear and user-friendly interface to help users accurately set event times and locations, emphasizing the importance of maintaining the user's original intent to avoid errors caused by timezone changes.

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(simonwillison.net)
Development time storage timezone user experience event management

HyperEssays: An Ongoing Digital Project for Montaigne's Essays

2024-12-22
HyperEssays: An Ongoing Digital Project for Montaigne's Essays

HyperEssays is a project dedicated to creating a modern and accessible online edition of Michel de Montaigne's Essays. The website hosts four editions of the Essays, including the original French, early modern English translations, and a modern English translation, which are continuously updated and improved. The project aims to provide readers with a convenient reading experience and rich interpretive resources, including annotations, indexes, and downloadable PDFs.

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(hyperessays.net)
Misc Montaigne Essays

Enum of Arrays: A Novel Data Structure for Efficient Data Processing

2024-12-21
Enum of Arrays: A Novel Data Structure for Efficient Data Processing

This article introduces a data structure called "Enum of Arrays" (EoA), similar to the popular "Struct of Arrays" (SoA), but with enums at its core. EoA packs multiple enum values into an array, using a single tag to identify the array's type. This reduces memory usage and branch prediction overhead, leading to more efficient data processing, particularly beneficial for SIMD optimization. The article uses the database system TigerBeetle as an example, illustrating how EoA enables efficient batch processing by effectively separating the control plane and data plane, resulting in significantly improved performance.

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(tigerbeetle.com)
Development data structure SIMD optimization

Jupyter Notebooks: E2E Testing and Documentation in One

2024-12-18

While developing a quantum computing library, the author leveraged Jupyter Notebooks as both user guides and end-to-end tests. By reading environment variables (like SERVER_URL) within the notebooks, they achieved parameterization, allowing execution by users and automated CI/CD pipelines. Two methods for running notebooks were explored: nbclient for simplicity, and nbconvert/jq for more control but increased complexity. The author opted for nbclient's ease of use, effectively integrating documentation maintenance and code testing, ensuring the integrity of both with every merge request.

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(rakhim.exotext.com)
Development E2E testing

MDN Learning Resources Get a Major Overhaul: New Learning Experience Launched

2024-12-25
MDN Learning Resources Get a Major Overhaul: New Learning Experience Launched

In December 2024, MDN launched a major update to its "Learn Web Development" section, merging the MDN Curriculum with existing learning content to create a more streamlined learning path. This upgrade addresses previous issues like bloated content and unclear learning pathways, providing a clearer and more accessible experience for beginners. The new site uses a modular structure with "Getting Started," "Core," and "Extensions" sections, incorporating clear learning objectives and interactive content. MDN will continue to improve content and design, aiming to deliver even better learning resources in the future.

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(developer.mozilla.org)
Development Web Development Learning Learning Resource Upgrade

California's Math Education Reform Sparks 'Math Wars'

2024-12-19
California's Math Education Reform Sparks 'Math Wars'

The update of California's Mathematics Framework (CMF) ignited a fierce debate, dubbed the "math wars." Reformists advocated replacing traditional algebra with more engaging and inclusive data science courses to boost student interest and close achievement gaps. Traditionalists countered that data science courses lacked rigor and couldn't replace algebra, jeopardizing future STEM careers. The conflict spilled onto social media and into politics, resulting in significant controversy. Ultimately, the University of California reversed the data science substitution policy and formed a workgroup to establish better math standards, following pressure from experts and tech leaders. This "war" exposed weaknesses in US math education and spurred further reforms.

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(alumni.berkeley.edu)
Education math education reform data science

Highlighting Bash in Lua with Neovim and Treesitter

2025-01-28

The author built a tool to synchronize packages across multiple machines, using a Lua configuration file. To improve readability and editing of Bash scripts embedded within the Lua configuration, they leveraged Neovim and the Treesitter plugin. Treesitter, through its injection feature, identifies the `script` field in Lua tables and highlights its content as Bash based on a custom query. This significantly enhances code readability and maintainability. The post details the configuration of Neovim and Treesitter, along with the custom query to achieve the Bash highlighting.

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(xnacly.me)
Development

Rust-based SQLite Rewrite Achieves 100x Tail Latency Reduction

2024-12-16

Researchers from the University of Helsinki and Cambridge have rewritten SQLite in Rust, creating Limbo, a project leveraging asynchronous I/O and io_uring to drastically improve performance. By utilizing asynchronous I/O and storage disaggregation, Limbo achieves up to a 100x reduction in tail latency, particularly beneficial in multi-tenant serverless environments. The key improvement comes from replacing synchronous bytecode instructions with asynchronous counterparts, eliminating blocking and enhancing concurrency. While improvements are most pronounced at high percentiles, this makes Limbo ideal for applications demanding high reliability.

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(avi.im)
Development Asynchronous I/O

Affordable Vision-Based GNSS-Denied Strapdown Celestial Navigation for UAVs

2025-01-20
Affordable Vision-Based GNSS-Denied Strapdown Celestial Navigation for UAVs

This paper presents a low-cost, lightweight strapdown celestial navigation solution for Uncrewed Aerial Vehicles (UAVs) operating in Global Navigation Satellite System (GNSS)-denied environments. Utilizing a modular system with a stabilized imaging system and a low-cost Attitude and Heading Reference System (AHRS), the algorithm achieves position estimates within 4 km accuracy. By performing an orbital maneuver through a full compass rotation and averaging position outputs, biases inherent in the strapdown system are nullified. An iterative method for in-flight geometric alignment of the camera with the AHRS, without external position input, is also presented. The results demonstrate the potential for low-cost celestial navigation as a redundant navigation modality in affordable, lightweight drones.

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(www.mdpi.com)
Tech UAV Navigation Celestial Navigation GNSS Denial

Unlock AI Innovation: Risk-Free Vector Search for Existing Apps

2025-01-26
Unlock AI Innovation: Risk-Free Vector Search for Existing Apps

This blog post demonstrates how to seamlessly integrate vector search into existing applications without the need for complete re-platforming. The author uses a simple recommendation engine example, combining cat image embeddings with TPCC purchase history data to recommend products based on visually similar cats. This showcases how AI functionalities can be added to existing apps using enhanced SQL syntax and APIs, highlighting the importance of testing database engines, vector indexes, and I/O subsystems under heavy concurrent workloads. The author emphasizes the low-hanging fruit of adding AI to existing infrastructure.

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(silk.us)
Development database performance

YouTube quietly downgraded its web embeds, impacting user experience

2024-12-14
YouTube quietly downgraded its web embeds, impacting user experience

YouTube recently altered its Publisher for Publishers (PfP) embedded player, removing the title link back to YouTube. This change, intended to protect advertisers since PfP allows publishers to sell their own ads, means many websites, including The Verge, now have YouTube embeds where clicking the title no longer opens the video on YouTube.com or the app. Despite efforts to communicate with YouTube, including reaching out to CEO Neal Mohan, the change remains. This highlights how large tech platforms can prioritize their own interests over user experience.

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(www.theverge.com)
Tech embedded player

Polars vs Pandas: A Head-to-Head Comparison

2025-01-23
Polars vs Pandas: A Head-to-Head Comparison

This book provides a detailed comparison of the Polars and Pandas data manipulation libraries, arguing that Polars offers a more intuitive and efficient approach. Through numerous examples, it showcases Polars' advantages across indexing, method chaining, performance, data reshaping, time series, and scalability. Polars consistently outperforms Pandas in speed and readability. The book is aimed at readers with some experience in data manipulation, particularly those familiar with Pandas.

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(kevinheavey.github.io)
Development data manipulation

Negotiating with Infringers: A Better Option for Creative Professionals

2024-12-16
Negotiating with Infringers: A Better Option for Creative Professionals

When a creative professional's copyright is infringed, litigation isn't the only option. This article's author, a lawyer, suggests considering negotiation with the infringer. Negotiation is quicker and cheaper than litigation and may yield benefits beyond monetary compensation, such as promotion and collaboration opportunities. The author points out that most infringements are not malicious but due to negligence. Through negotiation, adversaries can be transformed into collaborators, leading to long-term success. Of course, if negotiations fail, litigation remains a last resort.

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(www.thelegalartist.com)
Startup intellectual property copyright infringement negotiation

The Undocumented 68030 Instruction That Saved the Mac Classic II

2025-01-25

While debugging a Macintosh Classic II in MAME, the author discovered a bus error causing a 'Sad Mac' in 32-bit addressing mode. Reverse engineering revealed an out-of-bounds jump in the ROM, leading the CPU to execute an undocumented 68030 instruction. Surprisingly, this instruction corrected the value of register A1, preventing a crash and allowing the Classic II to boot successfully. The author validated this by repairing a vintage Classic II and modifying its ROM. This case highlights the power of emulators in uncovering hardware quirks and showcases how a software bug was inadvertently fixed by hardware.

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(www.downtowndougbrown.com)
Hardware

Frequency Shifts Don't Imply Quantum Entanglement: The Tardigrade Case

2025-01-01
Frequency Shifts Don't Imply Quantum Entanglement: The Tardigrade Case

A recent, unpublished manuscript claims to demonstrate quantum entanglement between a superconducting qubit and a tardigrade, sparking much media attention. However, the authors cite a frequency shift in the qubit as evidence, a claim challenged by physicists. This post uses a simple mass-spring system analogy to illustrate the commonplace nature of frequency shifts. Even in quantum systems, frequency is primarily determined by mass and springiness, not entanglement. The author argues the experiment lacks sufficient evidence for quantum entanglement, attributing the observed frequency shift to classical physics.

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(benbrubaker.com)
Tech quantum entanglement frequency shift tardigrade

Beware of Over-Abstraction: The Hidden Costs in Software Development

2024-12-28
Beware of Over-Abstraction: The Hidden Costs in Software Development

Overuse of abstraction layers in software development can lead to performance degradation and code complexity. The article argues that good abstractions should hide underlying complexity, such as the TCP protocol. However, many so-called abstractions merely add extra layers of indirection without providing real value, increasing cognitive load, debugging difficulty, and performance overhead. The author advises developers to use abstractions judiciously, prioritizing code simplicity and performance, and avoiding abstraction for abstraction's sake.

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(fhur.me)
Development abstraction

Missile Strike Confirmed as Cause of Azerbaijan E190 Crash

2024-12-28
Missile Strike Confirmed as Cause of Azerbaijan E190 Crash

An Azerbaijan Airlines Embraer E190 passenger plane crashed on Christmas Day, killing 38 people. The Azerbaijani government confirmed that a Russian Pantir-S1 surface-to-air missile caused the crash. The aircraft was attempting an emergency landing when it went down. Russian air defense forces were engaged in shooting down Ukrainian drones in the area, but civilian airspace wasn't closed. Despite pilot requests for an emergency landing, the plane was denied access to Russian airports and crashed near Aktau, Kazakhstan.

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(aeroxplorer.com)
Misc missile strike international incident

PQConnect: A New Layer of Internet Security Against Quantum Attacks

2024-12-27

PQConnect is an easy-to-install layer of internet security that allows you to immediately address the threat of quantum attacks on your computer without waiting for application upgrades. It automatically applies end-to-end post-quantum cryptography between computers running PQConnect, adding cryptographic protection to unencrypted applications, working with existing pre-quantum applications to add post-quantum protection, and adding a second application-independent layer of defense to applications with application-specific post-quantum protection. Unlike VPNs, which only protect traffic between your computer and VPN proxies, PQConnect automatically detects and transparently encrypts traffic to servers supporting PQConnect. System administrators can easily configure server names to announce PQConnect support. Separate installation instructions are provided for users and system administrators.

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(www.pqconnect.net)
Tech post-quantum cryptography internet security quantum attacks

NY Governor Signs Law Criminalizing Restaurant Reservation Black Market

2024-12-21
NY Governor Signs Law Criminalizing Restaurant Reservation Black Market

New York Governor Kathy Hochul has signed the Restaurant Reservation Anti-Piracy Act, cracking down on the black market for restaurant reservations. This first-of-its-kind legislation targets individuals and groups using bots or manual methods to hoard and resell reservations at inflated prices. The law protects both consumers and businesses by ensuring a fairer reservation system, while acknowledging some legitimate reasons for reservation trading, such as handling non-refundable bookings in emergencies. However, the prevalent scalping and cancellations negatively impact restaurants and diners.

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(ny.eater.com)
Misc Restaurant Reservations Black Market New York Legislation

Software Design Philosophy: Taming Complexity

2024-12-21

This post summarizes three key ideas from the book "A Philosophy of Software Design": zero tolerance for complexity, the misconception that smaller components always equate to better modularity, and the complexities inherent in exception handling. The author argues that complexity isn't caused by single errors but accumulates over time. Examples of an order processing system and user registration illustrate how to avoid duplicated code and find the right balance between component size and modularity. Furthermore, the post details three techniques to reduce exception handling complexity: eliminating errors, masking exceptions, and exception aggregation, with file processing serving as an example. The book ultimately emphasizes the importance of consistently simplifying complexity in software design.

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(www.16elt.com)
Development software design complexity exception handling

Beyond NISQ: The Dawn of the Megaquop Machine

2024-12-18
Beyond NISQ: The Dawn of the Megaquop Machine

Caltech's John Preskill delivered a keynote address at the Q2B 2024 conference, discussing the potential transition from the NISQ (Noisy Intermediate-Scale Quantum) era to the Megaquop (million quantum operations) era. Megaquop machines are envisioned to execute millions of quantum operations, albeit with a still-high error rate. Through error mitigation techniques and potentially higher-quality physical qubits, they could achieve tasks beyond the reach of classical computers and NISQ machines. Significant progress from teams at Google, AWS, and others in quantum error correction and hardware improvements lays the groundwork for Megaquop machines. However, Preskill highlighted challenges including decoding speed for quantum error correction, mitigating cosmic ray interference, and identifying commercially viable applications. Future applications of Megaquop machines might include simulations of complex quantum systems and materials science research.

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(quantumfrontiers.com)
AI Quantum Computing Quantum Error Correction

EHT Reveals Turbulent Accretion Flow Around M87*'s Black Hole

2025-01-25

The Event Horizon Telescope (EHT) Collaboration has released a new analysis of the supermassive black hole at the center of Messier 87 (M87*), combining observations from 2017 and 2018. The study confirms that M87*'s black hole rotational axis points away from Earth and highlights the significant role of turbulence within the accretion disk in explaining the observed shift in the ring's brightness peak. Using a vastly expanded simulation image library, the team confirmed the counter-clockwise 30-degree shift of the brightest region of the ring between 2017 and 2018. This research represents a major step forward in understanding the complex dynamics of black hole environments.

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(eventhorizontelescope.org)
Tech Black Hole Event Horizon Telescope Accretion Disk

Beware! The Latest Wave of Fake Literary Agencies

2025-01-09
Beware! The Latest Wave of Fake Literary Agencies

Writer Beware® exposes a new crop of fraudulent literary agencies employing sophisticated websites and deceptive tactics to scam writers. The detailed investigation reveals the methods used by several fake agencies, such as The Elite Scout Society and ImplicitPress Literary Agency, highlighting how they fabricate credentials and solicit upfront fees. The article emphasizes the importance of verifying an agency's legitimacy before engaging with them to avoid falling victim to these scams.

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(writerbeware.blog)
Misc writing scams literary agents

IBM Breakthrough: Beyond Copper Interconnects for Future CMOS Nodes

2024-12-16
IBM Breakthrough: Beyond Copper Interconnects for Future CMOS Nodes

IBM researchers presented two papers at the 2024 IEDM conference on back-end-of-line (BEOL) interconnect technology, showcasing advancements in advanced interconnect solutions. The first paper explored improvements and future directions for copper interconnect technology, while the second (co-authored with Samsung) introduced a post-copper alternative utilizing an advanced low-k dielectric (ALK) material and rhodium (Rh). This new technology significantly enhances performance and reliability, reducing resistance and capacitance, and addressing reliability challenges faced by traditional copper interconnects at 24nm and below. This research paves the way for future CMOS node chip manufacturing and provides crucial support for the continued development of high-performance, low-power logic integrated circuits.

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(research.ibm.com)
Hardware chip interconnect back-end interconnect

Rules for Writing Kickass Software Tutorials

2025-01-02
Rules for Writing Kickass Software Tutorials

This blog post outlines rules for crafting exceptional software tutorials. It highlights the importance of avoiding jargon, clearly stating goals, providing copy-pasteable code snippets, maintaining a working code state, and minimizing dependencies. The author uses contrasting examples to illustrate the differences between good and bad tutorials, offering practical improvements such as using long command-line flags, separating user-defined values from reusable logic, and employing consistent, descriptive headings. The ultimate aim is to create beginner-friendly tutorials that are easy to understand and follow.

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(refactoringenglish.com)
Development software tutorials technical writing

Decoding the Telephony Signals in Pink Floyd's 'The Wall'

2024-12-22

A telecom hardware engineer decoded the telephony signals in a scene from Pink Floyd's 'The Wall'. The audio clip, featuring dial tones, rapid tone combinations, and an answer tone, was analyzed using spectrograms. By comparing the frequencies to known standards (DTMF, CAS R2, SS5), the engineer identified the signaling as SS5 and decoded the number as 044 1831. This analysis not only showcases the engineer's expertise but also reveals insights into the film's sound design and suggests a possible connection to a real-life London number.

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(corelatus.com)
Tech signal decoding telecommunications

Novel Link Between Cell Nutrition and Identity Could Improve Immunotherapies

2024-12-12
Novel Link Between Cell Nutrition and Identity Could Improve Immunotherapies

Scientists at the Salk Institute have discovered a nutritional switch from acetate to citrate is key in determining T cell fate, shifting them from active effector cells to exhausted ones. Published in Science, the findings reveal that different nutrients alter a cell's gene expression, function, and identity. This groundbreaking research offers new therapeutic targets for immunotherapies, potentially keeping T cells active against chronic diseases. The discovery highlights a direct link between cellular function and nutrition, opening new avenues for treating chronic illness.

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(www.genengnews.com)
AI Immunotherapy T cells Cellular Metabolism

Implementing a Simple Pool Allocator in C

2025-01-09

This article details the implementation of a simple pool allocator in C. The author first presents a fixed-size pool implementation with O(1) time complexity for allocation and deallocation. This is then improved to allow dynamic resizing, preventing crashes due to exhaustion of the initial pool. The improved version cleverly uses linked lists to manage memory blocks, balancing performance with efficient memory usage.

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(8dcc.github.io)
Development Memory Management Pool Allocator

Trofaf: A Super Simple Live Static Blog Generator in Go

2024-12-19
Trofaf: A Super Simple Live Static Blog Generator in Go

Trofaf is a super-simple live static blog generator written in Go. Requiring only three directories (posts, public, templates), it generates a static website from markdown files and front matter, automatically updating whenever changes are detected. It offers command-line options for customization and prioritizes simplicity over extensive features, making it ideal for users seeking a straightforward blogging solution.

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(github.com)
Development Static Blog Generator Blog Engine
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