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The Secret to High-Performing Teams: Transactive Memory Systems

2024-12-15
The Secret to High-Performing Teams: Transactive Memory Systems

This article explores the cornerstone of high-performing teams: Transactive Memory Systems (TMS). It's not about individual memory strength, but how teams effectively share and leverage members' knowledge and skills. Three types of team memory are introduced: working, long-term, and transactive memory, with a focus on how TMS enhances team performance. TMS comprises two elements: collaborative patterns and individual expertise. By building a TMS, teams unlock collective intelligence and overcome the impact of member changes. The article recommends methods like the Capability Comb, Team Manual, and deliberate practice to help teams quickly establish and improve their TMS.

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(emilywebber.co.uk)
Development knowledge sharing transactive memory system

Mullvad VPN App's 2024 Security Audit Report Released

2024-12-12
Mullvad VPN App's 2024 Security Audit Report Released

Mullvad VPN has released the report for its 2024 third-party security audit of its VPN app. The audit uncovered six vulnerabilities, ranging in severity from low to high, all of which have been addressed. Three high-severity vulnerabilities involved signal handlers and a virtual IP address leak and have been fixed in the latest version. The audit also noted some non-security issues that Mullvad is actively working to resolve. Overall, the Mullvad VPN app is deemed highly secure, but users are still advised to upgrade to the latest version.

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(mullvad.net)
Tech VPN security security audit vulnerability fixes

The Marvelous Disappearing Capacitor: A Clever Trick to Improve Photodiode Amplifier Performance

2024-12-12
The Marvelous Disappearing Capacitor: A Clever Trick to Improve Photodiode Amplifier Performance

This article introduces a clever technique to improve the performance of photodiode amplifiers: bootstrapping. The parasitic capacitance of a photodiode limits its ability to amplify rapidly changing signals. In a traditional transimpedance amplifier (TIA), this capacitance reduces bandwidth. The article analyzes the working principle of a TIA, explaining how the photodiode's parasitic capacitance affects circuit performance. The author presents a bootstrapped circuit using an op-amp and JFET, which effectively eliminates the parasitic capacitance by keeping the voltage across the photodiode terminals virtually the same, significantly improving bandwidth. The article also discusses a variant AC-coupled bootstrapped circuit and provides relevant formulas.

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(lcamtuf.substack.com)
Hardware photodiode bootstrapping transimpedance amplifier

Springfield Weekend Weather Forecast: Sunny and Warm

2024-12-16

Springfield weather today is sunny with a temperature of 72°F, humidity at 55%, dew point of 65°F, barometric pressure of 12 PPI, north wind at 6 mph, and visibility of 35 miles. July precipitation is 1 inch. The weekend forecast predicts sunny skies and warm temperatures throughout, along with moderate humidity. Clark St. pool is back open, come on down!

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(unworld.neocities.org)
Misc weather forecast Springfield weekend weather

Unraveling the PPG Wave 2.2 & 2.3: An 8-bit vs. 12-bit DAC Mystery

2024-12-15

This article delves into the subtle yet significant differences between the PPG Wave 2.2 and 2.3 synthesizers. While the 2.3 utilizes 12-bit DACs, wavetable playback remains 8-bit; only samples imported via external devices fully leverage the 12-bit precision. Oscilloscope measurements reveal a unique audio processing method: two oscillators send data interleaved, resulting in a DAC output frequency double the individual oscillator sample rate. This creates a distinctive timbre and high-frequency aliasing beyond human hearing. The article also notes the relatively slow CV update rate, yet the sound retains its character.

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(till-kopper.de)
Hardware synthesizer digital audio

Quantus: Revolutionizing Fintech with a Cutting-Edge Quantitative Trading Platform

2024-12-12

Quantus is an advanced quantitative trading platform designed to provide professional traders and institutional investors with efficient and reliable trading solutions. It integrates powerful data analytics tools, flexible backtesting capabilities, and a low-latency execution system, enabling users to better capitalize on market opportunities and enhance investment returns. With its robust technology and user-friendly interface, Quantus is quickly becoming a rising star in the fintech landscape.

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(quantus.finance)
Tech quantitative trading fintech trading platform

ChatGPT Clone in 3000 Bytes of C

2024-12-12

Developer Nicholas Carlini created a ChatGPT clone using only 3000 bytes of C code, powered by the GPT-2 model. This dependency-free implementation loads GPT-2's weight matrix and BPE file, then performs tokenization, matrix operations, transformer inference, and detokenization. While the output quality is not high, its efficiency is remarkable, producing multiple replies per second on modern hardware. This demonstrates the potential of compact code in implementing complex AI models.

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(nicholas.carlini.com)
AI

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

Hugging Face Spaces Launches ZeroGPU: Dynamic GPU Allocation for Enhanced AI Model Efficiency

2024-12-15
Hugging Face Spaces Launches ZeroGPU: Dynamic GPU Allocation for Enhanced AI Model Efficiency

Hugging Face Spaces has introduced ZeroGPU, a shared infrastructure that dynamically allocates NVIDIA A100 GPUs to optimize GPU usage for AI models and demos. ZeroGPU offers free GPU access, multi-GPU support, and lowers the barrier to entry for deploying AI models. Users simply select ZeroGPU hardware when creating a Gradio Space and use the `@spaces.GPU` decorator for GPU-dependent functions. ZeroGPU is compatible with PyTorch and optimized for Hugging Face's transformers and diffusers libraries, but currently only works with the Gradio SDK. Personal accounts (PRO users) can create up to 10 ZeroGPU Spaces, while organization accounts (Enterprise Hub) can create up to 50.

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(huggingface.co)
AI GPU allocation

Ephemeral Database Access with GitHub Actions and S3

2024-12-12

This article presents a clever method for running a temporary database using GitHub Actions for ephemeral compute and S3 object storage for persistence. Spin up a MySQL-compatible database on demand, store data in S3, and automatically tear it down when finished, eliminating ongoing costs. A secure tunnel allows public access for integration tests, demos, or short-term development. Important: This approach is suitable only for short-term tasks; it's not designed for long-running database services.

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(wesql.io)
Development Database

Stanford Report Warns of Mirror Bacteria Feasibility and Risks

2024-12-17
Stanford Report Warns of Mirror Bacteria Feasibility and Risks

A Stanford University technical report details the feasibility of creating 'mirror bacteria' and their potential risks. Mirror bacteria, with all chiral molecules (proteins, nucleic acids, and metabolites) replaced by their mirror images, cannot evolve naturally but are becoming increasingly synthesizable. Immune systems and predation rely on chiral molecule interactions, meaning mirror bacteria could evade detection and control, potentially spreading unchecked and posing serious threats to humans, animals, plants, and the environment. The report comprehensively assesses synthesis, biosecurity, human health impacts, medical countermeasures, and ecological consequences, urging attention to this potential biosecurity risk.

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(purl.stanford.edu)
AI biosecurity

Middle Schooler Discovers New Compound in Goose Poop

2024-12-12
Middle Schooler Discovers New Compound in Goose Poop

A middle school student, participating in a research program with a local university, discovered a novel compound, orfamide N, in a goose poop sample collected from a park. While not responsible for the initial observed antibiotic activity of the bacteria, orfamide N inhibited the growth of human melanoma and ovarian cancer cells in lab tests. This research demonstrates the success of combining educational outreach with natural product discovery, highlighting the importance of university-community partnerships. The project provided invaluable hands-on experience for the student, showcasing the potential of young scientists.

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(phys.org)
Tech scientific discovery middle school research new compound

Microsoft Discontinues iMac Rival Surface Studio 2+

2024-12-13
Microsoft Discontinues iMac Rival Surface Studio 2+

Microsoft has discontinued its Surface Studio 2+, ending its only direct competitor to Apple's iMac. The high-end all-in-one PC, aimed at creative professionals, featured a unique tilting touchscreen display. However, its high price and lagging specs hampered its success. This leaves a gap in the Windows ecosystem for premium all-in-one devices and cements Apple's dominance in this market segment.

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(www.macrumors.com)
Hardware All-in-one PC

Sensirion SGP41 TVOC Sensor Accuracy Test: Relative Changes, Not Absolute Values

2024-12-15
Sensirion SGP41 TVOC Sensor Accuracy Test: Relative Changes, Not Absolute Values

AirGradient conducted accuracy and precision tests on the Sensirion SGP41 TVOC sensor used in their air quality monitors. The tests revealed that the sensor effectively tracks relative changes in TVOC levels – detecting increases or decreases – but cannot provide precise absolute values. This is due to limitations inherent in low-cost VOC sensors, including lack of specificity, cross-sensitivity, environmental sensitivity, and baseline drift. While the sensor cannot precisely measure TVOC concentrations, it still offers practical value in identifying TVOC sources and for environmental monitoring. Future testing by AirGradient will explore sensor performance under various conditions to further understand its capabilities and limitations.

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(www.airgradient.com)
Hardware TVOC sensor air quality monitoring sensor accuracy

nCompass: Revolutionizing AI Inference Cost

2024-12-16

nCompass Technologies has developed innovative AI inference serving software that reduces the cost of serving AI models at scale by up to 50%. By utilizing custom AI inference software and a hardware-aware request scheduler with Kubernetes autoscaling, nCompass maintains high-quality service on fewer GPUs, resulting in up to a 4x improvement in response time and significantly reduced GPU infrastructure costs. Users access open-source models via API with no rate limits and receive a $100 signup credit. On-premises solutions are also available for businesses demanding cost-effectiveness and responsiveness.

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(www.ncompass.tech)
AI AI inference cost optimization

XFCE 4.20 Released: Experimental Wayland Support and Numerous Improvements

2024-12-15

After nearly two years of development, XFCE 4.20 has been officially released! This version focuses on preparing the codebase for Wayland, now offering experimental Wayland support for most components, though it's still in its early stages and recommended for advanced users. XFCE 4.20 also boasts numerous new features, bug fixes, and improvements, including improved icon scaling, a performance-enhanced icon view, and an upgraded Thunar file manager. Importantly, Wayland support is incomplete, with some components and features yet to be ported.

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(alexxcons.github.io)
Development Desktop Environment

AI Revolutionizes Protein Design: New Tool Unveiled

2024-12-15

Scientists have developed a groundbreaking AI-powered tool, RoseTTAFold, for designing novel proteins. This tool predicts the amino acid sequence of a protein based on a user-specified target structure, generating stable and functional proteins. This breakthrough promises to accelerate advancements in drug discovery, materials science, and bioengineering, offering new possibilities for addressing various challenges facing humanity. The technology holds the potential to revolutionize biomedicine by creating proteins with specific functions for treating diseases or developing new materials.

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(artexplorer.ai)
AI Protein Design Biomedicine

TeaVM 0.11.0 Released: New WebAssembly Backend

2024-12-15

TeaVM 0.11.0 has been released, featuring a brand new WebAssembly backend. The old WebAssembly backend, while functional, lacked adoption due to insignificant performance gains and a poor developer experience. The new backend, leveraging the WebAssembly GC proposal, addresses these issues, improving interaction with browser JS APIs and reducing binary file size. While currently slightly less feature-rich than the JS backend, it already supports JSO (Java-to-JS interaction API), aiming for parity in the next release. This release also includes bug fixes in BitSet implementation and adds support for various JS APIs, such as file reading, touch events, the Popover API, and Navigator.sendBeacon.

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(teavm.org)
Development

Open Source Pen Plotter Robot Project

2024-12-13
Open Source Pen Plotter Robot Project

Robertleoj has open-sourced a project on GitHub called Pen Plotter Robot, a pen plotting robot. The project includes the robot's design, construction, and control program, aiming to help makers and enthusiasts learn about robotics and mechanical design. The code and documentation are publicly available for learning and improvement.

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(github.com)
Hardware pen plotter

Gukesh Crowned Youngest World Chess Champion in History

2024-12-12
Gukesh Crowned Youngest World Chess Champion in History

In round 14 of the 2024 World Chess Championship, 18-year-old Indian Grandmaster Gukesh D defeated defending champion Ding Liren to become the youngest world champion ever! Ding employed a Reversed Grünfeld Defense, but Gukesh, with precise opening play and deep preparation, steered the game into a complex endgame. After a prolonged struggle, Ding blundered, allowing Gukesh to capitalize and secure a historic victory, fulfilling a lifelong dream.

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(lichess.org)
Game chess world champion Gukesh

Animal Adoption: A Balancing Act of Genes and Emotion

2024-12-13
Animal Adoption: A Balancing Act of Genes and Emotion

A lioness adopting a leopard cub sparks a fascinating exploration into the world of animal adoption. This article delves into the evolutionary mechanisms behind this behavior, examining kinship selection, environmental pressures, individual differences, and maternal instincts. Research suggests that animal adoption isn't solely an evolutionary strategy, but also reflects animal emotions and individual variations, challenging traditional evolutionary explanations.

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(nautil.us)
Misc animal behavior evolutionary biology kinship selection

Italian Town Solves Winter Darkness with Giant Mirror

2024-12-13
Italian Town Solves Winter Darkness with Giant Mirror

Nestled in a valley between Italy and Switzerland, the town of Viganella suffers from three months of winter darkness each year. To combat this, in 2006, residents ingeniously installed a massive mirror on a nearby mountain peak. This mirror reflects sunlight into the town square, providing much-needed light and warmth during the long winter. The project, a testament to human ingenuity and community spirit, has since inspired similar initiatives worldwide.

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(www.vice.com)
Tech innovation community

Starting a Business at 62: A Father's Inspiring Journey

2024-12-15
Starting a Business at 62: A Father's Inspiring Journey

At 62, after retirement, the author's father bravely started his own business, breaking free from a lifetime of self-imposed limitations stemming from a challenging childhood. He overcame his ingrained fear of risk, growing his business from humble beginnings to a thriving small shop. This isn't just a story of entrepreneurship; it's a testament to the power of pursuing dreams at any age, a beacon of inspiration showing that it's never too late to achieve your goals.

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(thoughts.jatintiwari.com)
Startup entrepreneurship late-in-life career inspiration

Fermat's Last Theorem Proof: Computers Tackle a Math Challenge

2024-12-12
Fermat's Last Theorem Proof: Computers Tackle a Math Challenge

A team is attempting to prove Fermat's Last Theorem using Lean, encountering unexpected challenges along the way. Instead of relying on the original proof, they're using a modern, more generalized approach. While formalizing crystalline cohomology, they discovered an error in a key lemma, leading to a re-examination of the theory's foundations. They ultimately found a workaround using an alternative proof. This experience highlights potential errors in modern mathematical literature and underscores the need for formalized proofs.

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(xenaproject.wordpress.com)
Development Fermat's Last Theorem Formalized Mathematics

MIT Develops Noninvasive Imaging Method for Deeper Tissue Penetration

2024-12-13
MIT Develops Noninvasive Imaging Method for Deeper Tissue Penetration

MIT researchers have developed a novel noninvasive imaging technique that more than doubles the depth limit of metabolic imaging. Using high-powered lasers and a specialized fiber shaper, the method minimizes light scattering, allowing for clearer and faster imaging of living tissue. This label-free approach avoids tissue preprocessing, providing a more natural representation of cellular structures and functions. The increased depth penetration and speed promise significant advancements in cancer research, tissue engineering, drug discovery, and immunology.

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(news.mit.edu)
Tech biomedical imaging laser technology in vivo imaging

HP 9845C: A Colorful Pioneer of 80s Computer Graphics

2024-12-13

In 1981, the HP 9845C, the top-of-the-line model in the 9845 series, emerged as the first HP computer to support color, stunning the world with its powerful graphics capabilities. Featuring hardware-accelerated vector drawing and polygon fill, and supporting fast matrix operations for 3D model rendering, this machine initially designed for scientific and engineering use quickly became a multipurpose system, even contributing to the graphic scenes in the 1983 film "WarGames." Its demo program was remarkable, boasting over 4000 lines of code and showcasing cutting-edge concepts like 3D shading, ordered dithering, wireframe rendering, interactive light pen control, and color infographics at a high resolution of up to 4913 colors.

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(socks-studio.com)
Tech computer graphics vintage computer

Literary Review: The Achievements and Limitations of the 20th-Century Novel

2024-12-15
Literary Review: The Achievements and Limitations of the 20th-Century Novel

Edwin Frank's new book, *Stranger Than Fiction: Lives of the Twentieth-Century Novel*, explores the accomplishments of the 20th-century novel. Frank argues that novels, through formal innovations like Kafka's rambling sentences and Stein's repetitions, guide readers to slow down and savor the nuances of language. He praises novelists' efforts in expressing collective experiences, particularly the horrors of war and the awakening of self-awareness, but also points out the book's Eurocentric perspective, its insufficient attention to novels from other cultural backgrounds, and its somewhat superficial exploration of war and self-awareness.

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(thebaffler.com)
Misc 20th-century novel literary review self-awareness

AI Color Palette Generator - Browse, Edit, Visualize and Generate Unique Palettes

2024-03-20

Artificial Intelligence (AI) is revolutionizing the way we design with colors. Using AI algorithms, AIColors.co helps designers create color palettes that evoke desired emotions, enhance user experience, and align with brand identities. The website offers a user-friendly interface where designers can input keywords or images to generate unique color combinations. With a database of millions of colors and various customization options, AIColors.co empowers designers to explore and refine their color choices. Additionally, the website provides resources and tutorials on color theory and AI-driven design, making it a valuable tool for both novice and experienced designers.

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(aicolors.co)
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