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西安穿戴式伤情模拟训练装置
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发布时间: 2025-06-01 13:39:15北京青年报社官方账号
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  西安穿戴式伤情模拟训练装置   

That black hole you've seen everywhere now has a name.It's been christened Powehi — a Hawaiian phrase referring to an "embellished dark source of unending creation."The groundbreaking, first-ever photograph of a black hole was published around the world when it was unveiled on Wednesday, captivating viewers and providing the only direct visual evidence that these regions of spacetime exist.The responsibility of finding it a name fell to Larry Kimura, a Hawaiian language professor at the University of Hawaii at Hilo, who was approached by astronomers involved with the project. Two of the eight telescopes used to capture the photograph are located in Hawaii.Powehi was chosen for its roots in the Kumulipo, an 18th-century Hawaiian chant that describes a creation story.It puts together two terms from the chant: Po, meaning profound dark source of unending creation, and wehi (or wehiwehi) which is one of the several ways that po is described in the chant."It is awesome that we, as Hawaiians today, are able to connect to an identity from long ago, as chanted in the 2,102 lines of the Kumulipo, and bring forward this precious inheritance for our lives today," Kimura said in a statement."To have the privilege of giving a Hawaiian name to the very first scientific confirmation of a black hole is very meaningful to me and my Hawaiian lineage that comes from po," he added. "I hope we are able to continue naming future black holes from Hawaii astronomy according to the Kumulipo."Powehi was captured by the Event Horizon Telescope, a project that connected eight telescopes around the world.The supermassive black hole and its shadow, at the center of a galaxy known as M87, were photographed back in April 2017, but the results were only revealed on Wednesday."We have seen what we thought was unseeable," said Sheperd Doeleman, director of the Event Horizon Telescope Collaboration, unveiling the historic snap. "We have seen and taken a picture of a black hole."More than 200 researchers were involved in the project, and they had worked for more than a decade to capture the image. The project is named after the event horizon, the proposed boundary around a black hole that represents the point of no return where no light or radiation can escape.The telescope array collected 5,000 trillion bytes of data over two weeks, which was processed through supercomputers so that the scientists could retrieve the images."Powehi, as a name, is so perfect, because it provides real truths about the image of a black hole that we see," Jessica Dempsey of the James Clerk Maxwell Telescope, said in 2617

  西安穿戴式伤情模拟训练装置   

The Federal Trade Commission announced a billion settlement with Facebook on Wednesday, resolving a sweeping investigation by regulators into how the company lost control over massive troves of personal data and mishandled its communications with users. It is the largest fine in FTC history — and yet still only about a month's worth of revenue for Facebook.The deal comes amid growing calls in Washington for greater transparency and accountability for technology companies, whose power over social movements as well as personal information has increasingly come to be seen as dangerous by politicians, users, and even one of Facebook's co-founders.Facebook agreed to the deal following years of damaging admissions about the company's privacy practices, such as the inadvertent exposure of up to 87 million users' information to the political analysis firm Cambridge Analytica.The settlement resolves a formal complaint by the FTC alleging that Facebook "used deceptive disclosures and settings" that eroded user privacy, violating a prior agreement Facebook signed with the commission in 2012. Facebook also broke the law, the FTC alleged, by misusing phone numbers obtained for account security purposes to also target advertisements to its users. And the company allegedly deceived "tens of millions of users" by implying that a facial recognition feature on the service had not been enabled by default, when in fact it had."The magnitude of the billion penalty and sweeping conduct relief are unprecedented in the history of the FTC," said Chairman Joseph Simons in a statement. "The relief is designed not only to punish future violations but, more importantly, to change Facebook's entire privacy culture to decrease the likelihood of continued violations."Facebook did not immediately respond to a request for comment.The FTC settlement — which also covers Facebook subsidiaries Instagram and WhatsApp — could set the tone for a wave of further action by policymakers worldwide as they seek to rein in the most powerful players in Silicon Valley.The billion fine is nearly 30 times the FTC's largest-ever civil penalty to date — 8 million, which was levied on Dish Network in 2017 — reflecting the tremendous scale of Facebook's operations, as well as the enormity of its self-admitted mistakes.In addition to the record civil penalty, Facebook also agreed to accept greater oversight of its privacy practices. Under the FTC deal, Facebook's board will form a privacy oversight committee made up of independent members who cannot be fired by CEO Mark Zuckerberg alone. That committee will be charged with appointing still other officials who must periodically and truthfully certify that Facebook is complying with the FTC agreement, or risk being held personally liable. Zuckerberg will also be required to make those same certifications, the FTC said."False certifications would subject Mr. Zuckerberg and the [designated compliance officers] to personal liability, including civil and criminal penalties," Simons said in a statement written jointly with the Commission's two other Republican members, Christine Wilson and Noah Phillips.The FTC also required that regular third-party assessments of Facebook's privacy practices not rely on company materials but instead on the auditor's own fact-finding.The FTC voted 3-2 to approve the settlement, with the agency's two Democrats dissenting because they believed the measure did not go far enough. In dissents, Commissioners Rohit Chopra and Rebecca Slaughter said they believed the fines were far too small, and that the FTC wrongfully gave Zuckerberg and Facebook COO Sheryl Sandberg a pass."Failing to hold them accountable only encourages other officers to be similarly neglectful in discharging their legal obligations," wrote Chopra. "In my view, it is appropriate to charge officers and directors personally when there is reason to believe that they have meaningfully participated in unlawful conduct, or negligently turned a blind eye toward their subordinates doing the same."Other prominent tech critics, including Democratic Sen. Richard Blumenthal of Connecticut and Missouri Republican Sen. Josh Hawley, have said a billion fine would be "a bargain" for Facebook. In an earnings report earlier this year, Facebook said it was setting aside billion to help cover expenses related to the expected penalty. It reported quarterly revenues of billion at the time and its stock rose after it announced the charge, signaling investors were relieved by the probable outcome.For more than a year, Facebook — once the darling of policymakers and a celebrated example of American ingenuity — has lurched from crisis to crisis.This past October, for example, Facebook disclosed that hackers had compromised tens of millions of accounts by exploiting a series of software flaws, culminating in their ability to impersonate users and take over their profiles.The following month, Facebook 4985

  西安穿戴式伤情模拟训练装置   

The cast of the hit 90s sitcom "Friends" will reunite more than 15 years after the series finale to help launch WarnerMedia's new streaming platform HBO Max, HBO confirmed on Friday. The show will air in May to coincide with all 236 episodes being dropped on the new streaming platform.Although the reunion has been widely rumored and likely will be highly anticipated, some fans might be disappointed that a reboot is not on the table. Those wondering if Ross and Rachel are "on a break" may never know the answer.Instead, the reunion will focus on interviews and retrospectives. The cast will return to the iconic comedy’s original soundstage, Stage 24, on the Warner Bros. Studio lot in Burbank, HBO said. “Guess you could call this the one where they all got back together — we are reuniting with David, Jennifer, Courteney, Matt, Lisa, and Matthew for an HBO Max special that will be programmed alongside the entire Friends library,” said Kevin Reilly, chief content officer, HBO Max. “I became aware of Friends when it was in the very early stages of development and then had the opportunity to work on the series many years later and have delighted in seeing it catch on with viewers generation after generation. "It taps into an era when friends – and audiences – gathered together in real time and we think this reunion special will capture that spirit, uniting original and new fans.”"Friends'" popularity saw a resurgence in recent years thanks to its popularity on Netflix. The show garnered legions of new, younger fans who may have been too young to enjoy the entire series during its original run (1994 to 2004). "Friends" is one of a number of highly-popular Netflix programs to leave the platform as other companies are trying to capitalize on the streaming wars. Netflix's most-watched show, "The Office," is expected to leave at the end of 2020. The "Friends" episode library is expected to be a big draw to HBO Max, which is set for a May launch. The streaming service will include HBO's library and sell go for .99 a month. 2059

  

The cast of the hit 90s sitcom "Friends" will reunite more than 15 years after the series finale to help launch WarnerMedia's new streaming platform HBO Max, HBO confirmed on Friday. The show will air in May to coincide with all 236 episodes being dropped on the new streaming platform.Although the reunion has been widely rumored and likely will be highly anticipated, some fans might be disappointed that a reboot is not on the table. Those wondering if Ross and Rachel are "on a break" may never know the answer.Instead, the reunion will focus on interviews and retrospectives. The cast will return to the iconic comedy’s original soundstage, Stage 24, on the Warner Bros. Studio lot in Burbank, HBO said. “Guess you could call this the one where they all got back together — we are reuniting with David, Jennifer, Courteney, Matt, Lisa, and Matthew for an HBO Max special that will be programmed alongside the entire Friends library,” said Kevin Reilly, chief content officer, HBO Max. “I became aware of Friends when it was in the very early stages of development and then had the opportunity to work on the series many years later and have delighted in seeing it catch on with viewers generation after generation. "It taps into an era when friends – and audiences – gathered together in real time and we think this reunion special will capture that spirit, uniting original and new fans.”"Friends'" popularity saw a resurgence in recent years thanks to its popularity on Netflix. The show garnered legions of new, younger fans who may have been too young to enjoy the entire series during its original run (1994 to 2004). "Friends" is one of a number of highly-popular Netflix programs to leave the platform as other companies are trying to capitalize on the streaming wars. Netflix's most-watched show, "The Office," is expected to leave at the end of 2020. The "Friends" episode library is expected to be a big draw to HBO Max, which is set for a May launch. The streaming service will include HBO's library and sell go for .99 a month. 2059

  

The Department of Justice informed the House Oversight Committee on Wednesday that President Donald Trump has asserted executive privilege over materials related to the addition of a citizenship question to the 2020 census.The move comes ahead of a vote in the committee about whether to hold Attorney General William Barr and Commerce Secretary Wilbur Ross in contempt of Congress over a dispute related to the census and for not complying with subpoenas issued by the committee.In a letter to Committee Chair Elijah Cummings, Assistant Attorney General Stephen Boyd 580

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