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