MEMPHIS, Tenn.--(BUSINESS WIRE)--Sep 1, 2023--

Texas’s fragile power grid will be pushed to the brink in coming days as unusually hot weather grips

Scientists have been left baffled by the discovery of the wreck of a 2,000-year-old “computer” that is amazingly complex. The Antikythera mechanism – an astronomical calendar – has been dubbed “‘the first computer” and has baffled scientists for generations after it was first discovered inside a Greek shipwreck in 1901. The device is a hand-powered time-keeping instrument that used a wing-up system to track the sun, moon and planets’ celestial time. It also worked as a calendar, tracking the phases of the Moon and the timing of eclipses. Despite sounding relatively simple, the mechanism was actually ahead of its time, being more technically sophisticated than any other tool that was invented over the next 1,000 years. In its current condition, the mechanism is in 82 separate fragments with only a third of its original structure remaining, including 30 corroded bronze gearwheels. Sign up to our free Indy100 weekly newsletter Research into the device from experts at University College London involved 3D computer modelling and helped them solve the mystery of how the device worked, revealing a “creation of genius”. Adam Wojcik, a materials scientist at UCL said at the time: “We believe that our reconstruction fits all the evidence that scientists have gleaned from the extant remains to date.” They theorised that the device tracked the movement of the sun, moon and planets on concentric rings, as the ancient Greeks believed that the sun and planets revolved around Earth, rather than the sun. The researchers explained in Scientific Reports: “Solving this complex 3D puzzle reveals a creation of genius—combining cycles from Babylonian astronomy, mathematics from Plato’s Academy and ancient Greek astronomical theories.” Have your say in our news democracy. Click the upvote icon at the top of the page to help raise this article through the indy100 rankings.

Artificial intelligence is helping engineers build solar panels out of a “miracle material”. Scientists have long been excited about the possibility of new perovskite tandem solar cells, which could help bring the vastly improved efficiency of perovskite to mass production. They have an efficiency of more than 33 per cent, dramatically higher than conventional silicon solar cells. Those tandem solar cells come with a host of other benefits, too. They rely on inexpensive raw materials and can be made relatively easily. Engineers have faced a problem, however, in making them cheaply and at scale. To make them efficient, manufacturers need to make a very thin, high-grade layer of perovskite. Doing that is difficult. It relies on a complex process that varies significantly, seemingly with little explanation. Trying to improve that process has often relied on a gradual process of trying out new possibilities through trial and error. Now scientists have successfully built a new system that uses artificial intelligence to try and work out how to build those layers better. Instead of picking through video recordings to work out how different layers work, researchers were able to train a computer system to spot the hidden signs of good and bad coatings. After the system was built, it was able to be used better understand how to change the production to make it more efficient, researchers said. “These are extremely exciting results,” said Ulrich W Paetzold, a researcher from the Karlsruhe Institute of Technology, who worked on the new study. “Thanks to the combined use of AI, we have a solid clue and know which parameters need to be changed in the first place to improve production. “Now we are able to conduct our experiments in a more targeted way and are no longer forced to look blindfolded for the needle in a haystack. This is a blueprint for follow-up research that also applies to many other aspects of energy research and materials science.” An article describing the breakthrough, ‘Discovering Process Dynamics for Scalable Perovskite Solar Cell Manufacturing with Explainable AI’, is published in Advanced Materials. Read More Tiny solar-powered van unveiled in Japan Solar panel world record smashed with ‘miracle material’ ‘We let you down’: Peloton apologises for Thanksgiving ride

Male characters in role-playing video games have 50% more dialogue than females, highlighting a “stark gender imbalance” in the gaming genre, scientists have said. In role-playing games (RPGs), the gamer controls one or more characters undertaking quests or missions in an imaginary world. Researchers from the Universities of Glasgow and Cardiff analysed the dialogue of 50 RPGs from 1986 to 2020, including Final Fantasy, Skyrim and Mass Effect. This encompassed 6.2 million spoken words from 13,000 characters. The results, published in the journal Royal Society Open Science, suggest 94% of the games studied had more male dialogue than female dialogue, including ones with multiple female protagonists such as Final Fantasy X-2 or King’s Quest VII. They also found that the proportion of female dialogue is slowly increasing in RPGs at a rate of 6.3 percentage points per decade – from a mean of about 18% in the 1980s to about 40% by 2020. While we expected to find a larger proportion of male dialogue overall, we were surprised to discover how few games - just three of 50 - had more than 50% female dialogue Dr Stephanie Rennick, University of Glasgow However, the researchers said that if this rate were to continue, gender balance would not be reached until 2036. Dr Stephanie Rennick, research associate in philosophy, school of humanities at the University of Glasgow, said: “While we expected to find a larger proportion of male dialogue overall, we were surprised to discover how few games – just three of 50 – had more than 50% female dialogue. “I was also surprised that the lack of female characters compared to their male counterparts persisted at every level, from main player characters through to background NPCs (non-player characters).” For the study, the researchers obtained the transcripts of dialogue used in the games and identified which character said what. Dr Sean Roberts, lecturer at the school of English, communication and philosophy at Cardiff University, said: “We categorised the gender of each character, not assuming binary gender. “This allowed us to count how many words were available for each gender in each game. “For example, we can compare the number of words spoken by female characters to the number of words spoken by male characters.” The researchers found only 35% of words were spoken by female characters and they were more likely to apologise, hesitate or be polite, compared with their male counterparts. They said the proportion of female dialogue ranged from 6% (King’s Quest VI) to 80% (King’s Quest IV: The Perils of Rosella). They discovered one game, Monkey Island, did not pass the Bechdel test, which requires two named female characters to talk to each other about something besides a man. Around half of gamers are female, but they experience a lot of abuse and exclusion. More diverse representation is being called for by players and developers Dr Sean Roberts, Cardiff University The team also found examples of stereotyped gendered behaviour. The researchers said that in Stardew Valley, characters respond differently depending on the player character’s gender. For example, they said, female players are offered a salad, wine, repeatedly described as beautiful and assumed to have little experience of video games, while male players are offered pasta, ale, described as “full of energy” and are assumed to be good video game players. Analysis also showed only 30 out of 13,000 characters belong to the non-binary gender categories, which is about half as much as in real life, the researchers said. Dr Roberts said: “Around half of gamers are female, but they experience a lot of abuse and exclusion. “More diverse representation is being called for by players and developers. “So we hope that developers will consider addressing the imbalances we found in order to create more inclusive games.”

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BOSTON & LOS ANGELES--(BUSINESS WIRE)--Jun 21, 2023--

'We are deeply disheartened by the outbreak of disorderly conduct that affected innocent people and businesses,' the AMP members stated

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