Опубликовано: Fri, 19 Dec 2025 16:05:04 GMT
Канал: Все статьи подряд / DIY или Сделай сам / Хабр

Dundas Football Club, ManugufГородская среда изобилует громкими звуками, что, поневоле, заставляет задуматься о защите — как это лучше сделать (с концептуальной точки зрения), и какими некоторыми интересными свойствами звук обладает, обо всём этом мы и поговорим в статье ниже! Читать далее]]>

https://habr.com/ru/companies/beget/articles/976372/

Опубликовано: Fri, 19 Dec 2025 15:43:52 GMT
Канал: Все статьи подряд / Робототехника / Хабр

Конечность робота состоит из звеньев (links) и сочленений (joint / axe), которые вместе образуют кинематическую цепь. Сочленение, которое так же можно назвать суставом или осью - это подвижное соединение между звеньями. Читать]]>

https://habr.com/ru/articles/977496/

More carbon dioxide in the environment is making food more calorific but less nutritious -- and also potentially more toxic, a study has found. From a report: Sterre ter Haar, a lecturer at Leiden University in the Netherlands, and other researchers at the institution created a method to compare multiple studies on plants' responses to increased CO2 levels. The results, she said, were a shock: although crop yields increase, they become less nutrient-dense. While zinc levels in particular drop, lead levels increase.

"Seeing how dramatic some of the nutritional changes were, and how this differed across plants, was a big surprise," she told the Guardian. "We aren't seeing a simple dilution effect but rather a complete shift in the composition of our foods... This also raises the question of whether we should adjust our diets in some way, or how we grow or produce our food."

While scientists have been looking at the effects of more CO2 in the atmosphere on plants for a decade, their work has been difficult to compare. The new research established a baseline measurement derived from the observation that the gas appears to have a linear effect on growth, meaning that if the CO2 level doubles, so does the effect on nutrients. This made it possible to compare almost 60,000 measurements across 32 nutrients and 43 crops, including rice, potatoes, tomatoes and wheat.

[ Read more of this story ]( https://science.slashdot.org/story/25/12/19/1533240/food-becoming-more-calorific-but-less-nutritious-due-to-rising-carbon-dioxide?utm_source=atom1.0moreanon&utm_medium=feed ) at Slashdot.

The Association for Computing Machinery, the world's largest society of computing professionals, announced that all publications and related artifacts in the ACM Digital Library will become freely available to everyone starting January 2026. Authors will retain full copyright to their published work under the new arrangement, and ACM has committed to defending those works against copyright and integrity-related violations.

The transition follows what ACM described as extensive dialogue with authors, Special Interest Group leaders, editorial boards, libraries, and research institutions globally. Students, educators, and researchers at institutions of all sizes -- from well-resourced universities to emerging research communities -- will gain unrestricted access to the full catalog of ACM-published work. The Digital Library houses decades of computing research across journals, magazines, conference proceedings, and books.

[ Read more of this story ]( https://news.slashdot.org/story/25/12/19/168225/acm-to-make-its-entire-digital-library-open-access-starting-january-2026?utm_source=atom1.0moreanon&utm_medium=feed ) at Slashdot.

iRobot, the Bedford, Massachusetts-based company that brought the Roomba vacuum cleaner into American homes over its 35-year history, filed for bankruptcy on Sunday and will be acquired by Picea, its Chinese contract manufacturer that also produces competing household devices.

The Wall Street Journal's editorial board placed blame for the company's demise on the Federal Trade Commission under Chair Lina Khan, which opposed Amazon's $1.7 billion bid to acquire iRobot. That deal collapsed in January 2024 amid regulatory pressure from both the FTC and European antitrust authorities. Senator Elizabeth Warren and other progressives had urged Khan to block the acquisition, arguing in a September 2022 letter that Amazon is "'almost universally recognized' as the leader in warehouse and fulfillment robotics space" and that the deal "would open up a new market to Amazon's abuses."

After the deal fell through, iRobot cut 31% of its workforce and moved "non-core engineering functions to lower-cost regions." The company had shifted production to Vietnam to reduce its exposure to China but was hit by tariffs under Trump's Liberation Day trade measures -- initially 46%, later reduced to 20%. iRobot said the trade uncertainty made it difficult to operate.

[ Read more of this story ]( https://slashdot.org/story/25/12/19/1654219/how-lina-khan-killed-irobot?utm_source=atom1.0moreanon&utm_medium=feed ) at Slashdot.

Uber is hiring more engineers rather than fewer because AI tools have made them "superhumans," CEO Dara Khosrowshahi said, pushing back against the industry trend of using productivity gains to justify headcount cuts. Speaking on the "On with Kara Swisher" podcast, Khosrowshahi noted that other tech executives see AI making engineers 20% to 30% more productive and conclude they need 20% to 30% fewer engineers. His view: every engineer has become more valuable. Between 80% and 90% of Uber's developers now use AI tools, according to Khosrowshahi.

The company no longer keeps scores of engineers on call to diagnose issues because AI agents are constantly monitoring systems, he said. The latest AI models are producing "hundreds of millions of dollars of benefit" for Uber, he said, describing the company as an "applied AI" business that harnesses the technology for pricing, payments, matching, routing, identification and customer complaints.

[ Read more of this story ]( https://tech.slashdot.org/story/25/12/19/1717228/uber-is-hiring-more-engineers-because-ai-is-making-them-more-valuable-ceo-says?utm_source=atom1.0moreanon&utm_medium=feed ) at Slashdot.

The television industry's brightness war may have hit its inflection point in 2025, the year TCL and Hisense released the first consumer TVs capable of 5,000 nits under specific settings -- a figure that would have seemed absurd not long ago when manufacturers struggled to reach 2,000 nits. LG introduced Primary RGB Tandem OLED technology, moving from a three-stack panel design to a four-stack red-blue-green-blue configuration that the company claims can achieve 4,000 nits. The technology appears in the LG G5, Panasonic Z95B and Philips OLED950 and OLED910.

RGB mini-LED also emerged as a new category. The technology uses individual small red, green and blue LED backlights instead of white or blue LEDs paired with quantum dots. Hisense demonstrated it at CES 2025, TCL announced its Q10M for China, and Samsung unveiled its own version called micro-RGB. These sets range from $12,000 to $30,000. Sony has confirmed it will debut RGB TV technology in spring 2026. HDR content is currently mastered at a maximum of 4,000 nits. The situation echoes the audio industry's loudness war, The Verge points out, which peaked with Metallica's heavily compressed Death Magnetic in 2008.

[ Read more of this story ]( https://entertainment.slashdot.org/story/25/12/19/1734246/2025-was-the-beginning-of-the-end-of-the-tv-brightness-war?utm_source=atom1.0moreanon&utm_medium=feed ) at Slashdot.

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https://www.opennet.ru/opennews/art.shtml?num=64453

Я там на githuh в caesium немножко фиксов наклал.

+++ Caesium/0.5

Microsoft AI CEO Mustafa Suleyman estimates that staying competitive in frontier AI development will require "hundreds of billions of dollars" over the next five to ten years, a sum that doesn't even account for the high salaries companies are paying individual researchers and technical staff. Speaking on a podcast, Suleyman compared Microsoft to a "modern construction company" where hundreds of thousands of workers are building gigawatts of CPUs and AI accelerators. There's "a structural advantage by being inside a big company," he said.

When asked whether startups could compete with Big Tech, Suleyman said "it's hard to say," adding that "the ambiguity is what's driving the frothiness of the valuations." Meta CEO Mark Zuckerberg said in September he'd rather risk "misspending a couple of hundred billion" than fall behind in superintelligence.

[ Read more of this story ]( https://slashdot.org/story/25/12/19/1852238/microsoft-ai-chief-staying-in-the-frontier-ai-race-will-cost-hundreds-of-billions?utm_source=atom1.0moreanon&utm_medium=feed ) at Slashdot.

alternative_right writes: Grocery delivery service Instacart will refund $60 million to settle FTC claims that it misled customers with false advertising and unlawfully enrolled them in paid subscriptions. Instacart partners with over 1,800 retailers to provide online shopping, delivery, and pickup services from nearly 100,000 stores across North America. Its platform serves millions of customers and is also used by roughly 600,000 independent shoppers across thousands of cities in Canada and the United States.

In a complaint filed on Thursday, the FTC claimed Instacart engaged in multiple deceptive tactics that raised costs for customers, including failing to provide advertised refunds and falsely advertising "free delivery" while still charging mandatory service fees that added up to 15% to order costs. The FTC said Instacart also advertised a "100% satisfaction guarantee," but typically offered only small credits toward future orders rather than full refunds to customers experiencing problems with deliveries or service. The company allegedly hid refund options from "self-service" menus, leading customers to believe credits were their only option.

[ Read more of this story ]( https://news.slashdot.org/story/25/12/19/1921253/ftc-instacart-to-refund-60m-over-deceptive-subscription-tactics?utm_source=atom1.0moreanon&utm_medium=feed ) at Slashdot.

President Trump's closure of the de minimis customs loophole in May -- which previously allowed Chinese packages valued under $800 to enter the U.S. duty-free -- has redirected a flood of cheap goods toward Europe, where similar exemptions for packages under $175.8 in the EU and $180 in the UK remain intact.

The shift has been swift: exports of low-value Chinese packages to the U.S. have dropped more than 40% since May, according to Chinese customs data, and the EU has this year overtaken the U.S. as the largest market for China's roughly $100 billion cheap package trade.

Shipments to Hungary and Denmark have quadrupled, and those to Germany, France, and the UK have risen 50% or more. Temu has recorded seven straight months of double-digit U.S. sales declines, per Consumer Edge data tracking credit and debit card transactions. Its European sales, on the other hand: up 56% in the EU and 46% in the UK since May compared to a year ago. The EU agreed last week to impose a $3.5 fee on imported small packages starting in July and to close the de minimis exemption entirely by 2028. The UK plans to follow in 2029.

[ Read more of this story ]( https://slashdot.org/story/25/12/19/1925205/all-that-cheap-chinese-stuff-is-now-europes-problem?utm_source=atom1.0moreanon&utm_medium=feed ) at Slashdot.

Состоялся выпуск Lanemu P2P VPN 0.13.1 - реализации децентрализованной виртуальной частной сети, работающей по принципу Peer-To-Peer, при котором участники подключены друг к другу, а не через центральный сервер. Участники сети могут находить друг друга через BitTorrent-трекеры или BitTorrent DHT, либо через других участников сети (peer exchange). Приложение является бесплатным и открытым аналогом VPN Hamachi, написано на языке Java (c отдельными компонентами на языке Си) и распространяется под лицензией GNU LGPL 3.0. Поддерживается запуск в Windows, GNU/Linux, FreeBSD и Mac OS.

https://www.opennet.ru/opennews/art.shtml?num=64455

После трёх лет разработки представлен релиз платформы для потребительских интернет-устройств WebThings Gateway 2.0. Изначально платформа развивалась компанией Mozilla, но затем была преобразована в независимый проект, управляемый и развиваемый сообществом. Платформа WebThings состоит из шлюза WebThings Gateway и библиотеки WebThings Framework. Код проекта написан на языках TypeScript и JavaScript с использованием серверной платформы Node.js и распространяется под лицензией MPL 2.0. Загрузочные сборки с интегрированной поддержкой WebThings Gateway, предоставляющие унифицированный интерфейс для настройки умного дома, подготовлены в форме образа для плат Raspberry Pi, Docker-контейнера и snap-пакета.

https://www.opennet.ru/opennews/art.shtml?num=64454

Microsoft's latest holiday ad for its Copilot AI assistant features a 30-second montage of users seamlessly syncing smart home lights to music, scaling recipes for large gatherings, and parsing HOA guidelines -- none of which the software can actually perform reliably when put to the test. The Verge methodically tested each prompt shown in the ad and found that Copilot repeatedly hallucinated interface elements that didn't exist, claimed to highlight on-screen buttons when it hadn't, and abandoned calculations midway through.

The smart home interface shown in the ad belongs to "Relecloud," a fictional company Microsoft uses in internal case studies. A Microsoft spokesperson confirmed that both the HOA document and the inflatable reindeer photo were fabricated for the advertisement. The ad closes with Santa Claus asking Copilot why toy production is behind schedule.

Further reading: Talking To Windows' Copilot AI Makes a Computer Feel Incompetent.

[ Read more of this story ]( https://slashdot.org/story/25/12/19/1932210/microsoft-made-another-copilot-ad-where-nothing-actually-works?utm_source=atom1.0moreanon&utm_medium=feed ) at Slashdot.

An anonymous reader quotes a report from Ars Technica: At this point, most competitive online multiplayer games on the PC come with some kind of kernel-level anti-cheat software. As we've written before, this is software that runs with more elevated privileges than most other apps and games you run on your PC, allowing it to load in earlier and detect advanced methods of cheating. More recently, anti-cheat software has started to require more Windows security features like Secure Boot, a TPM 2.0 module, and virtualization-based memory integrity protection. Riot Games, best known for titles like Valorant and League of Legends and the Vanguard anti-cheat software, has often been one of the earliest to implement new anti-cheat requirements. There's already a long list of checks that systems need to clear before they'll be allowed to play Riot's games online, and now the studio is announcing a new one: a BIOS update requirement that will be imposed on "certain players" following Riot's discovery of a UEFI bug that could allow especially dedicated and motivated cheaters to circumvent certain memory protections.

In short, the bug affects the input-output memory management unit (IOMMU) "on some UEFI-based motherboards from multiple vendors." One feature of the IOMMU is to protect system memory from direct access during boot by external hardware devices, which otherwise might manipulate the contents of your PC's memory in ways that could enable cheating. The patch for these security vulnerabilities (CVE-2025-11901, CVE-202514302, CVE-2025-14303, and CVE-2025-14304) fixes a problem where this pre-boot direct memory access (DMA) protection could be disabled even if it was marked as enabled in the BIOS, creating a small window during the boot process where DMA devices could gain access to RAM.

The relative obscurity and complexity of this hardware exploit means that Vanguard isn't going to be enforcing these BIOS requirements on every single player of its games. For now, it will just apply to "restricted" players of Valorant whose systems, for one reason or another, are "too similar to cheaters who get around security features in order to become undetectable to Vanguard." But Riot says it's considering rolling the BIOS requirement out to all players in Valorant's highest competitive ranking tiers (Ascendant, Immortal, and Radiant), where there's more to be gained from working around the anti-cheat software. And Riot anti-cheat analyst Mohamed Al-Sharifi says the same restrictions could be turned on for League of Legends, though they aren't currently. If users are blocked from playing by Vanguard, they'll need to download and install the latest BIOS update for their motherboard before they'll be allowed to launch the game. Riot's new anti-cheat change could create problems for older PCs if the new anti-cheat change is expanded, notes Ars.

The update relies on a BIOS patch to fix a UEFI flaw, and many older motherboards, especially Intel 300-series and AMD AM4 boards, may never receive that update. If Riot flags a system and the manufacturer doesn't provide a patched BIOS, players could be locked out of games despite having otherwise capable hardware.

[ Read more of this story ]( https://hardware.slashdot.org/story/25/12/19/2135223/riot-games-is-making-an-anti-cheat-change-that-could-be-rough-on-older-pcs?utm_source=atom1.0moreanon&utm_medium=feed ) at Slashdot.