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Protesters march in Panama against the contract extension for a huge copper mine_我的网站

一 |     PANAMA CITY -- Protesters blocked streets across Panama on Monday, demanding the government rescind a contract to continue copper mining in a biodiverse region.Teaching and construction unions led calls against the contract with environmentalists, saying continued development threatens forested land and crucial groundwater just 75 miles (120 kilometers) west of the capital, in the state of Colon.Across Panama City, peaceful protesters handed out fliers, but in some areas on the outskirts of the capital police met protesters with tear gas. In anticipation of the largest marches since a cost of living crisis last July, both the Department of Education and the University of Panama cancelled classes. The government used social media to highlight the “enormous contribution” the mine — Panama's largest private investment ever — makes to the country's economy.In March, Panama's legislature reached an agreement with Canadian mining company First Quantum, allowing its local subsidiary, Minera Panama, to continue operating a huge open-pit copper mine in central Panama for at least 20 more years. The mine was temporarily closed last year when talks between the government and First Quantum broke down over payments the government wanted to receive.Protests began after President Laurentino Cortizo signed off on that contract on Friday after it was approved by the congress.The president acted surreptitiously, according to Fernando Abrego, leader of Panama's Association of Teachers union. “The government decided this confrontation by quickly and expeditiously approving a contract they know is rejected by the people,” he said.Teachers were joined by construction workers, who are one of country's most powerful labor groups. “The people are in the streets in defense of sovereignty," said union leader Saúl Méndez, "in the face of a contract that cedes self-determination by devastating the environment to steal resources.”It is unclear how persuasive these arguments will prove against the economic boon of a single mining site that already brings in 3% of the nation’s gross domestic product. Minera Panama says the mine will employ thousands of Panamanians and that its shipments make 80% of the country's total exports.The new contract, initially slowed by labor disagreements, secures Panama at least $375 million a year from Minera Panama, over 10 times more than the previous deal. It represents one of the largest national mining contracts in a region where other countries like Costa Rica regulate the sector more stringently and El Salvador which banned metal mining in 2017. For teachers, however, Abrego said concession was not an option, and that the teachers' union would hold an assembly to plan their next actions. “We will remain in the streets,” he said.。    英伟达官方近日宣布，GeForce On社区更新直播将于北京时间8月25日23:00在YouTube和Twitch平台播出。业界普遍预期，DLSS 4.5光线重建的正式推送将是本次活动的核心内容。对于光线追踪和路径追踪游戏玩家来说，这无疑是一次值得期待的画质升级。

二 |     英伟达于今年6月在COMPUTEX 2026上正式发布了DLSS 4.5光线重建技术。

三 | 该技术采用第二代Transformer AI模型，相比前代，新模型计算能力提升35%，参数数量增加20%，降噪器更强大，空间感知能力更深入。此前，DLSS 4.5光线重建的相关文件已在《使命召唤：现代战争4》测试版文件中被发现。其驱动文件通过NVIDIA Profile Inspector即可在已支持游戏中提前启用。正式推送在即，用户无需更换硬件就能升级，DLSS 4.5光线重建将覆盖RTX 20、30、40、50全系显卡。由于RTX 40和50系列支持FP8精度加速，运行光线重建的效率更高；而RTX 20和30系列不支持FP8，性能开销会相对更大。此外，新版光线重建在RTX 50系列上还支持6倍多帧生成，这是一个专为50系优化的功能，能进一步放大帧率表现。除DLSS 4.5外，本次GeForce On还可能涉及RTX Spark和Reflex 2等话题。关于DLSS 5，英伟达今年3月GTC上已宣布计划秋季推出。    至于新硬件方面，2025年Gamescom曾明确宣布无新硬件，今年英伟达虽未作类似说明，但目前尚无新GPU迹象。

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