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Real-time CO2 monitoring without batteries or external power

news.ycombinator.com Unknown 2025-09-19 18:29:34

< (From left) Master's Student Gyurim Jang, Professor Kyeongha Kwon > KAIST (President Kwang Hyung Lee) announced on June 9th that a research team led by Professor Kyeongha Kwon from the School of Electrical Engineering, in a joint study with Professor Hanjun Ryu's team at Chung-Ang University, has developed a self-powered wireless carbon dioxide (CO2) monitoring system. This innovative system harvests fine vibrational energy from its surroundings to periodically measure CO2 concentrations.

Topics: co2 monitoring power powered wireless

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The Skyscraper That Could Have Toppled over in the Wind (1995)

news.ycombinator.com Joseph Morgenstern 2025-09-19 16:40:16

Within this seemingly simple computation, however, lurks a powerful multiplier. At any given level of the building, the compression figure remains constant; the wind may blow harder, but the structure doesn’t get any heavier. Thus, immense leverage can result from higher wind forces. In the Citicorp tower, the forty-per-cent increase in tension produced by a quartering wind became a hundred-and-sixty-per-cent increase on the building’s bolts. Precisely because of that leverage, a margin of safe

Topics: building citicorp lemessurier tower wind

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First 2D, non-silicon computer developed

news.ycombinator.com Unknown 2025-09-16 19:26:43

The team used metal-organic chemical vapor deposition (MOCVD) — a fabrication process that involves vaporizing ingredients, forcing a chemical reaction and depositing the products onto a substrate — to grow large sheets of molybdenum disulfide and tungsten diselenide and fabricate over 1,000 of each type of transistor. By carefully tuning the device fabrication and post-processing steps, they were able to adjust the threshold voltages of both n- and p-type transistors, enabling the construction

Topics: 2d engineering materials research state

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Telephone Exchanges in the UK

news.ycombinator.com Unknown 2025-09-19 20:33:43

For more than a century the telephone exchange has formed the backbone of our telecommunications system. A vast array of more than 5,500 mostly nondescript buildings sit unnoticed on city, town or village streets, and quietly link up more than 254 million kilometres of cables and wires – keeping people in the UK connected to each other and the rest of the world. Since the first telephone exchange was established in London in 1879 with just eight subscribers, these anonymous looking buildings ha

Topics: copper customers exchanges fibre services

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It’s nearly impossible to buy an original Bob Ross painting (2021)

news.ycombinator.com Zachary Crockett 2025-09-19 21:21:52

Bob Ross is not a hard man to find. Though he died in 1995, the late TV painter remains an omnipresent cultural staple. His Chia Pet perm, nap-inducing voice, and meme-worthy sayings — “Happy little trees!” — have transcended time. On YouTube, old episodes of his show, The Joy of Painting, boast ~450m views. Online, you can acquire Bob Ross paints, Bob Ross brushes, Bob Ross underwear, Bob Ross coffee mugs, Bob Ross energy drinks, Bob Ross watches, and Bob Ross toasters. But there’s one thing

Topics: art bob painting paintings ross

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FIFA Club World Cup Soccer: Stream PSG vs. Atlético Madrid Live From Anywhere

cnet.com See Full Bio 2025-09-19 17:00:04

Recently crowned Champions League winner Paris Saint-Germain returns to action on Sunday as it takes on Spain's Atlético Madrid in this first Group B match of the 2025 FIFA Club World Cup. Below, we'll outline the best live TV streaming services to use to watch every match of the tournament as it happens, wherever you are in the world, and how to use a VPN if the match isn't available where you are, along with a full fixture list. French Ligue 1 champion PSG comes into this game at the Rose Bo

Topics: dazn free streaming vpn world

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Jensen Huang hits back at Anthropic CEO's warning that AI will eliminate half of white-collar jobs

techspot.com Rob Thubron 2025-09-19 20:51:00

What just happened? Anthropic CEO Dario Amodei's recent warning that AI could wipe out about half of all entry-level white-collar jobs in the next five years has been disputed by Nvidia boss Jensen Huang. It's not the first time the two companies have clashed, and Anthropic has hit back with claims that Huang is putting words into Amodei's mouth. Amodei made his ominous prediction about AI's impact on entry-level, white-collar jobs in May, warning that the eradication of these positions will le

Topics: ai amodei anthropic huang jobs

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Stolen iPhones disabled by Apple's anti-theft tech after Los Angeles looting

techspot.com Skye Jacobs 2025-09-19 22:02:00

What just happened? As protests against federal immigration enforcement swept through downtown Los Angeles last week, a wave of looting left several major retailers, including Apple, T-Mobile, and Adidas, counting the cost of smashed windows and stolen goods. Yet for those who made off with iPhones from Apple's flagship store, the thrill of the heist quickly turned into a lesson in high-tech security. Apple's retail locations are equipped with advanced anti-theft technology that renders display

Topics: apple local looting stolen store

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Chinese AI Companies Are Using an Absurd Loophole to Get Around US Chip Restrictions

futurism.com Unknown 2025-09-19 18:15:35

In case you haven't heard, the United States is embroiled in a life-and-death arms race. Only it's not conventional weapons or even world-ending ICBMs we're rushing to build, and it's definitely not a matter of life and death. The purported arms race, of course, is the rush to build artificial intelligence, and the US' adversary — for reasons even the Pentagon's most committed war hawks struggle to articulate — is China. In an effort to delay China's flourishing tech sector, Washington has gone

Topics: ai china chinese engineers malaysia

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Scientists Discover Startling Trick to Defeat Insomnia

futurism.com Unknown 2025-09-19 20:30:28

Image by Getty / Futurism Studies Insomnia is a curse we wouldn't wish on our worst enemy — and scientists have discovered a startlingly simple lifestyle change that appears to be very statistically effective at preventing it. In a new study published in the journal Sleep Health, researchers from Columbia and the University of Chicago report that eating a full day's serving worth of fruits and vegetables strongly appears to help people sleep more soundly throughout the night. Interrupted slee

Topics: eating fruits researchers sleep vegetables

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Do reasoning AI models really ‘think’ or not? Apple research sparks lively debate, response

venturebeat.com Carl Franzen 2025-09-18 04:02:22

Join the event trusted by enterprise leaders for nearly two decades. VB Transform brings together the people building real enterprise AI strategy. Learn more Apple’s machine-learning group set off a rhetorical firestorm earlier this month with its release of “The Illusion of Thinking,” a 53-page research paper arguing that so-called large reasoning models (LRMs) or reasoning large language models (reasoning LLMs) such as OpenAI’s “o” series and Google’s Gemini-2.5 Pro and Flash Thinking don’t a

Topics: ai apple models paper reasoning

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This decade-old LG phone sparked my love for photography — then it died

androidauthority.com Unknown 2025-09-19 21:00:33

It was a balmy September evening in 2016, and my friends and I thought it the perfect evening for a night-time hike up Cape Town’s popular Lion’s Head. Placed right in the city’s center, the panoramic views from the peak would no doubt be spectacular, and we had our bags packed full of liquid nourishment for when we reached the top. Two hours later, we got to the summit, and with the city’s sprawling lights glimmering through the still air below us, I spied the perfect photo opportunity. So, I g

Topics: g4 lg looking phone shot

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I tested this affordable Garmin sports watch, and it shouldn't be this good for the price

zdnet.com Matthew Miller 2025-09-19 18:00:24

ZDNET's key takeaways The Garmin Forerunner 165 is typically available for $249, with the Music model priced at $299. The watch is small and lightweight, has a vibrant AMOLED display, 19 hours of GPS battery life, and features extensive support for running. I just wish there were more sports modes. $199.99 at Garmin $191.99 at Amazon $199.99 at Crutchfield more buying choices For a limited time, Amazon has discounted the Garmin Forerunner 165 down to just $191 ($59 off), making the already af

Topics: 165 forerunner garmin music tracking

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Nvidia CEO criticizes Anthropic boss over his statements on AI

news.ycombinator.com Jowi Morales 2025-09-19 21:03:24

Nvidia CEO Jensen Huang criticized Anthropic head Dario Amodei over his recent claims that 50% of all entry-level white-collar jobs could be wiped out by artificial intelligence, causing unemployment to jump to 20% within the next five years. Huang disagreed with Amodei’s predictions when he was asked about it during VivaTech in Paris, where he said that he “pretty much disagree[s] with almost everything” the Anthropic CEO said, according to Fortune. “One, he believes that AI is so scary that o

Topics: ai anthropic dario huang jobs

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Show HN: Meow – An Image File Format I made because PNGs and JPEGs suck for AI

news.ycombinator.com Unknown 2025-09-19 18:26:55

MEOW The most Purr-fect Image File Format for your AI workflows Wait- What? You Can Just Make File Formats? Well- yes, but no, I'll come to that bit later, but before that, let me geek out about what this project is MEOW (Metadata Encoded Optimized Webfile) is a Python-based image file format designed to be efficient, practical, and cross-platform compatible. With support for RGBA transparency, metadata, and fast rendering capabilities, MEOW provides a modern alternative for image storage and

Topics: ai data file meow png

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Tiny-diffusion: A minimal implementation of probabilistic diffusion models

news.ycombinator.com Unknown 2025-09-19 13:52:49

A minimal PyTorch implementation of probabilistic diffusion models for 2D datasets. Get started by running python ddpm.py -h to explore the available options for training. Forward process A visualization of the forward diffusion process being applied to a dataset of one thousand 2D points. Note that the dinosaur is not a single training example, it represents each 2D point in the dataset. Reverse process This illustration shows how the reverse process recovers the distribution of the trainin

Topics: 2d learning model process rate

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Foundations of Computer Vision

news.ycombinator.com Unknown 2025-09-19 16:11:41

Foundations of Computer Vision Preface Dedicated to all the pixels. About this Book This book covers foundational topics within computer vision, with an image processing and machine learning perspective. We want to build the reader’s intuition and so we include many visualizations. The audience is undergraduate and graduate students who are entering the field, but we hope experienced practitioners will find the book valuable as well. Our initial goal was to write a large book that provided a g

Topics: book computer learning vision writing

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How easy is it for a developer to "sandbox" a program?

news.ycombinator.com In 2025-09-15 22:57:24

# source code sandboxing Sandboxing is when a developer limits available system resources to a program from within its own source code. A classic example is calling chroot(2) to change the root file-system to an empty directory so that the program cannot scribble into the root file-system. int main(void) { /* Program has full file-system access. */ chroot("/var/empty"); chdir("/"); /* File-system root re-rooted in /var/empty. */ int fd = open("/etc/passwd", O_RDONLY); /* Tried to open /var/empty

Topics: open operating sandbox source systems

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The Art of Lisp and Writing (2003)

news.ycombinator.com Unknown 2025-09-19 13:07:42

The Art of Lisp & Writing Ignorance more frequently begets confidence than does knowledge. Charles Darwin Lisp is the language of loveliness. With it a great programmer can make a beautiful, operating thing, a thing organically created and formed through the interaction of a programmer/artist and a medium of expression that happens to execute on a computer. Taught that programmingor the worse "developing software"is like a routine engineering activity, many find difficulty seeing writing

Topics: like lisp programming world writing

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With 50 Hours of Battery Life, These Beats Headphones Are at a New Record Low on Amazon

gizmodo.com Gizmodo Deals 2025-09-19 17:40:17

Right now, all of those looking to purchase a pair of decent and style-conscious wireless headphones should have the Beats Solo 4 on their radar, especially given that they’re also priced at their all-time low on Amazon. Beats, as part of Apple, is renowned for producing stable sound products that work perfectly with both Apple and Android devices. With the price reduced to only $99, from $200 (50% off), the offer is equivalent to the type of discounts normally experienced on Black Friday. See

Topics: amazon apple beats headphones listening

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Metal Detectorist Discovers Rare Boat Grave Containing Viking Woman and Her Dog

gizmodo.com Margherita Bassi 2025-09-19 18:00:45

The saying goes that a dog is a man’s best friend, but an archaeological excavation in Norway proves that women care about their four-legged companions just as much as men do, even 1,100 years ago. Archaeologists from the Arctic University Museum of Norway have revealed a 10th-century Viking boat grave on the Norwegian island of Senja. The buried individual is likely a woman who belonged to an elite class, as Science Norway first reported. Most notably, the team found a dog carefully buried at

Topics: dog grave norway viking woman

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Temuera Morrison Thinks ‘Star Wars’ Isn’t Done With Boba Fett Yet

gizmodo.com Justin Carter 2025-09-19 22:25:58

Just when The Mandalorian brought him back and teased big things for him, Boba Fett got kind of a raw deal once his own show dropped. Disney’s not given it a second season or even so much as mentioned it, to the point just last year, star Temuera Morrison was unsure about his character’s future. But maybe things are at a point to where it could be his time once more? While promoting his current film Ka Whawhai Tonu (In The Fire of War), Collider asked Morrison what the deal was. Along with goin

Topics: ahsoka going just morrison season

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Best Cheap Home Security Systems for 2025: I Found the Real Deals

cnet.com See Full Bio 2025-09-19 17:00:00

SwitchBot Not sure how to make up your mind? Here are the most important factors when considering a home security system that will spare your wallet. Pricing and subscriptions Security systems can be opaque when it comes to final pricing. The listed cost is often replaced by constant, rotating discounts which are more representative of the actual cost, and total subscription fees may not be obvious. For our list, we chose DIY companies with upfront pricing models so you can see what you get,

Topics: home monitoring security systems want

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FIFA Club World Cup Soccer: Stream Bayern Munich vs. Auckland City Live From Anywhere

cnet.com See Full Bio 2025-09-19 19:00:05

The FIFA Club World Cup action shifts to Cincinnati on Sunday for a Group C clash that appears to be something of a mismatch, as German Bundesliga behemoth Bayern Munich takes on tournament underdog Auckland City. Below, we'll outline the best live TV streaming services to use to watch every match of the tournament as it happens, wherever you are in the world, and how to use a VPN if the match isn't available where you are, along with a full fixture list. Six-time UEFA Champions League winner

Topics: dazn free streaming tournament vpn

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Alexa von Tobel has high hopes for ‘fintech 3.0’

techcrunch.com Anthony Ha 2025-09-19 22:28:44

It’s been 10 years since Alexa von Tobel sold her financial planning startup Learnvest to Northwestern Mutual for $250 million. Since then, von Tobel became Northwestern Mutual’s first chief digital officer, then chief innovation officer, before launching an early-stage venture firm of her own, Inspired Capital, with former U.S. Secretary of Commerce Penny Pritzker. She’s also a New York Times bestelling author, and she’s about to launch a new interview podcast, “Inspired with Alexa von Tobel.”

Topics: inspired like thing think years

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AI is disrupting the advertising business in a big way — industry leaders explain how

cnbc.com Ryan Browne 2025-09-19 16:41:16

In this article PUB-FR WPP-GB Follow your favorite stocks CREATE FREE ACCOUNT An AI assistant on display at Mobile World Congress 2024 in Barcelona. Angel Garcia | Bloomberg | Getty Images Artificial intelligence is shaking up the advertising business and "unnerving" investors, one industry leader told CNBC. "I think this AI disruption ... unnerving investors in every industry, and it's totally disrupting our business," Mark Read, the outgoing CEO of British advertising group WPP , told CNBC'

Topics: advertising ai best jobs wpp

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I’ve had Visible for a month, and this is the one thing I wish someone had told me before I joined

androidauthority.com Unknown 2025-09-19 21:30:33

Joe Maring / Android Authority A little over a month ago, I made a big change in my cell phone world; after 10 years of being a T-Mobile customer, I jumped ship and joined Visible. Not entirely sure what to expect with such a dramatic transition, I’ve been very pleased with Visible so far. The sign-up process was easy, my service has been great, and I’m really happy with the price I’m paying. As well as things have gone, there has been one hiccup that I wasn’t expecting. It’s far from a dealbr

Topics: month plus streaming video visible

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SIMD-friendly algorithms for substring searching (2016)

news.ycombinator.com Wojciech Muła 2025-09-18 14:31:18

Introduction Popular programming languages provide methods or functions which locate a substring in a given string. In C it is the function strstr , the C++ class std::string has the method find , Python's string has methods pos and index , and so on, so forth. All these APIs were designed for one-shot searches. During past decades several algorithms to solve this problem were designed, an excellent page by Christian Charras and Thierry Lecroq lists most of them (if not all). Basically these al

Topics: algorithms assumption based designed string

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Have a damaged painting? Restore it in just hours with an AI-generated “mask”

news.ycombinator.com Jennifer Chu 2025-09-17 04:59:23

The restoration is printed on a very thin polymer film, in the form of a mask that can be aligned and adhered to an original painting. It can also be easily removed. Kachkine says that a digital file of the mask can be stored and referred to by future conservators, to see exactly what changes were made to restore the original painting. Still, there has been no way to translate digital restorations directly onto an original work, until now. In a paper appearing today in the journal Nature, Alex

Topics: digital kachkine method original painting

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Q-learning is not yet scalable

news.ycombinator.com Seohong Park 2025-09-19 11:56:54

Does RL scale? Over the past few years, we've seen that next-token prediction scales, denoising diffusion scales, contrastive learning scales, and so on, all the way to the point where we can train models with billions of parameters with a scalable objective that can eat up as much data as we can throw at it. Then, what about reinforcement learning (RL)? Does RL also scale like all the other objectives? Apparently, it does. In 2016, RL achieved superhuman-level performance in games like Go and C

Topics: data horizon learning policy rl

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Latest Tech News

Real-time CO2 monitoring without batteries or external power

The Skyscraper That Could Have Toppled over in the Wind (1995)

First 2D, non-silicon computer developed

Telephone Exchanges in the UK

It’s nearly impossible to buy an original Bob Ross painting (2021)

FIFA Club World Cup Soccer: Stream PSG vs. Atlético Madrid Live From Anywhere

Jensen Huang hits back at Anthropic CEO's warning that AI will eliminate half of white-collar jobs

Stolen iPhones disabled by Apple's anti-theft tech after Los Angeles looting

Chinese AI Companies Are Using an Absurd Loophole to Get Around US Chip Restrictions

Scientists Discover Startling Trick to Defeat Insomnia

Do reasoning AI models really ‘think’ or not? Apple research sparks lively debate, response

This decade-old LG phone sparked my love for photography — then it died

I tested this affordable Garmin sports watch, and it shouldn't be this good for the price

Nvidia CEO criticizes Anthropic boss over his statements on AI

Show HN: Meow – An Image File Format I made because PNGs and JPEGs suck for AI

Tiny-diffusion: A minimal implementation of probabilistic diffusion models

Foundations of Computer Vision

How easy is it for a developer to "sandbox" a program?

The Art of Lisp and Writing (2003)

With 50 Hours of Battery Life, These Beats Headphones Are at a New Record Low on Amazon

Metal Detectorist Discovers Rare Boat Grave Containing Viking Woman and Her Dog

Temuera Morrison Thinks ‘Star Wars’ Isn’t Done With Boba Fett Yet

Best Cheap Home Security Systems for 2025: I Found the Real Deals

FIFA Club World Cup Soccer: Stream Bayern Munich vs. Auckland City Live From Anywhere

Alexa von Tobel has high hopes for ‘fintech 3.0’

AI is disrupting the advertising business in a big way — industry leaders explain how

I’ve had Visible for a month, and this is the one thing I wish someone had told me before I joined

SIMD-friendly algorithms for substring searching (2016)

Have a damaged painting? Restore it in just hours with an AI-generated “mask”

Q-learning is not yet scalable

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