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80-Year-Old Woman in Florida Killed by Two Alligators After Falling into Golf Course Pond_我的网站

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A | 记者24日从兰州大学获悉，该校物理科学与技术学院田永辉教授团队在光学数字计算领域取得重要进展。该团队研制出一种可重构光学算术逻辑单元芯片，将多种逻辑与算术运算集成于同一硬件平台。相关成果发表于国际权威期刊《自然·通讯》。 On Monday, the Sarasota County Sheriff’s Office confirmed that an 80-year-old woman was killed by two alligators when she fell into a pond at the Boca Royale Golf and Country Club in Englewood, Florida on Friday night. A medical examiner confirmed that an alligator attack was the cause of death.,The victim has been identified as Rose Marie Wiegand, who was seen falling into the country club pond near her home on Friday evening around 8:00 p.m. The victim reportedly tried to stay afloat, but her frantic splashing attracted two alligators which then grabbed her, according to a statement from the Sarasota County Sheriff’s Office. She was pronounced dead at the scene.,The sheriff’s office reported that an investigation into the attack is ongoing. Trappers from the Florida Fish and Wildlife Conservation Commission (FWC) were dispatched to the area to trap the alligators in the pond.,Alligator Kills Person in South Carolina, Dragged Man into a Retention Pond28 June, 03:33 GMT,One of the alligators found was 8 feet and 10 inches, and the other was 7 feet and 7 inches in length. The FWC said they would not be removing any other alligators from the pond at this time, and admit that they are not sure if the current alligators captured were responsible for the incident.,Although Florida is a state teeming with natural predators, serious injuries caused by alligators are typically rare. However, this year there have been two other deaths caused by alligators. In May, 47-year-old Sean McGuinness was killed by an alligator while searching for frisbees to resell in Taylor Lake located in Largo, Florida.,In late June, another man was killed by an alligator outside of Myrtle Beach, South Carolina.,Alligator mating season occurs between April and June. During this time they are typically more active, with some males pushing other males out of their territory; this leaves some of the predators with the desire to wander and find new homes.,The FWC recommends that individuals keep their distance if they see an alligator, and if they are concerned they should report the alligator to the FWC by calling their Nuisance Alligator Hotline. According to the FWC, nuisance alligators are at least four feet in length and pose a risk to people, pets, or property (such as swimming pools or garages).,The FWC also suggests that individuals only swim in areas that allow swimming and to do so during the daytime without a pet because alligators are most active between dusk and dawn. To minimize alligator-related incidents, people should also “never” feed alligators, says the FWC, as it is “illegal and dangerous.”。随着人工智能与数据密集型应用对高速、低时延计算需求的激增，传统电子集成电路正面临摩尔定律放缓、互连带宽受限和功耗持续上升等挑战。

B | 集成光子技术凭借大带宽、高速并行处理和低传输时延等优势，为突破电子计算瓶颈提供了重要的技术路径。

C | 基于这一背景，研究团队依托成熟的硅光子集成平台，利用微环调制器体积小、调制速度快、功耗低且易于电控重构的特点，研制出可实现多种逻辑与算术功能动态切换的光学数字计算芯片。团队通过级联微环构建基本逻辑单元，实现了NOT、AND、OR、XOR和XNOR等多种逻辑运算；同时引入波长维度并行处理不同二进制位，使同一硬件架构能够动态切换为2比特加法器、减法器和数值比较器，无需重新设计芯片结构。

D | 芯片基于220纳米硅绝缘体平台制备，每个微环集成载流子耗尽型高速电光调制结构和热调谐单元，可分别完成高速数据加载与工作波长校准。实验结果表明，该系统在20Gbit/s速率下实现了基本逻辑运算及算术功能，计算密度达到528Gbit/s2，能效达12.36fJ/bit。在此基础上，团队完成了高速数据加密与解密、医学图像水印嵌入和图像差异增强等应用验证，展示了该架构从基础逻辑器件向多功能光学数字计算系统扩展的能力。田永辉表示，该工作为构建高密度、低功耗、可重构的光子算术逻辑处理芯片提供了新的实现路径，也为光学数字计算在高速信息处理和片上智能计算中的应用奠定了器件基础。（记者颉满斌通讯员余若怡）。

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