Did you know? 16 facts from the 2018 Ironman World Championships
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1. 1st male overall was Patrick Lange (GER) in a time of 7:52:39, who broke his own course best set in 2017 of 8:01:40.
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1. 1st male overall was Patrick Lange (GER) in a time of 7:52:39, who broke his own course best set in 2017 of 8:01:40.
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2. 1st female overall was Daniela Ryf (SUI) in a time of 8:26:16: swim 57:26 (struggled with a jelly fish sting), bike 4:26:07 and run 2:57:05, breaking her own course best set in 2016 of 8:46:46.
3. The fastest male swimmer was age-grouper Jan Sibbersen in a time of 46:29, breaking the previous men’s record in Kona of 46:41 that had stood for 20 years, held by Lars Jorgensen. Jan’s bike split was 5:12:51, his run 4:26:24, for a total time of 10:37:33.
4. The fastest female swimmer was GB’s Lucy Charles in a time of 48:13. She averaged 1:15mins per 100m and in doing so set a new female course record, beating Jodi Jackson’s 1991 record of 48:43. She also finished in the overall top-10 fastest elite swim times of the day.
5. Fastest male bike split of the day was set by Cameron Wurf (AUS), a former pro cyclist and rower turned Ironman competitor. He improved his Kona record to 4:09:06 (26.98mph) from the 4:12:54 he set in 2017. His other splits were: swim 50:51; run 3:06:18, for a total time of 8:10:32.
6. Fastest female bike split of the day was set by Daniela Ryf in 4:26:07 (25:39mph), another new Kona record. The previous best time was 4:44:19, set by former time-trial specialist Karin Thürig in 2001.
7. Fastest male marathon run leg of the day came courtesy of Patrick Lange with a 2:41:32.
8. Fastest female marathon run leg of the day was set by Anne Haug 02:55:20.
9. For the first time in Kona history, the 8hr barrier was broken! Twice! First by Lange (7:52:39) and then by runner-up Bart Aernouts (BEL) in 7:56:41. His splits were: swim 54:07; bike 4:12:26; run 2:45:42.
10. Daniela Ryf came 25th overall beating 21 male pros; Lucy Charles came 35th overall.
11. Another Kona first saw the men’s winner propose to his girlfriend after crossing the finish line. Within a minute of finishing, Lange got down on one knee and proposed to Julia Hoffmann – she said yes!
12. Kyle and Brent Pease became the first push-assisted team of brothers to cross the finish line, and only the second pair in that category to complete the race. For the swim, Brent towed his brother in a boat, then completed the bike leg in a specially adapted bike before running with his brother in a specially adapted running chair. The last team to do so was father Dick and son Rick Hoyt in 1999. The Peases finished in a time of 14:29hrs.
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13. GB’s Liz McTernan became only the second female wheelchair participant to complete Kona, and now holds the course record of 14:21:12. McTernan competed in the ‘Physically Challenged’ or PC Division, using a hand bike for 180km and a racing wheelchair for the marathon.
Congratulations #TeamCAF athlete @lizmcternan! Liz crossedthe finish line at #IMKONA as the 2nd wheelchair woman to ever finish the @IRONMANtri World Championship. AND she now holds the course record for fastest time.
2月2日,美国人工智能(AI)公司OpenAI发布ChatGPT试点订阅计划——ChatGPT Plus。 ChatGPT Plus将以每月20美元的价格提供,订阅者可获得比免费版本更稳定、更快的服务,及尝试新功能和优化等优先权。 ChatGPT是一个对话式AI,由OpenAI的大模型GPT-3.5微调生成,因能够高效问答并具备撰写多类文本的能力,自2022年11月底推出后爆红至今,是当前AI领域最受关注的产品。 瑞士跨国投行瑞银集团(UBS)的一份研究报告显示:ChatGPT在今年1月份的月活跃用户数估计已达1亿,成为史上增长最快的消费者应用。该报告援引数据分析公司Similarweb的数据称,1月份平均每天有超过1300万名独立访问者使用ChatGPT,是12月份的两倍多。 相比之下,达到1亿月活跃用户数,字节跳动的TikTok花了大约9个月的时间,Instagram花了两年半。 短短两个月,ChatGPT持续暴涨的用户数,为其母公司OpenAI在这种新式聊天机器人的研发及商用道路上赢得了先发优势。不断增长的使用量虽然增加了巨额的计算成本,但也提供了宝贵的大量反馈,这将加速ChatGPT的改进优化。 OpenAI最大的投资者微软,亦开始利用ChatGPT的技术提高产品竞争力——全线产品将融合ChatGPT/GPT3.5~GPT4。 图片来源:微软科技公众号 微软此前已经宣布推出其视频会议及远程协作平台的高级付费版Microsoft Teams Premium,订阅者可享用OpenAI GPT-3.5提供支持的大型语言模型技术,用AI自动生成会议笔记。目前看是换用GTP4来武装了。 利用ChatGPT智能总结功能快速生成会议重要的信息 有不同媒体均预告GPT产品将摧毁现有搜索引擎,包括产品以及竞价排名模式。原Gmail创始人保罗·布赫海特 (Paul Buchheit) 在Twitter上表示,他认为谷歌的业务最多只能维持两年。 谷歌明显感受到了来自ChatGPT的威胁。自2019年不再管谷歌日常工作的谷歌联合创始人拉里·佩奇和谢尔盖·布林,也因为这种紧迫局势重新参与到战略制定,上个月跟公司高管连开几次会议,讨论关于这种新式聊天机器人的应对措施。在谷歌透露的信息上,将在近期推出聊天机器人功能引入Google搜索引擎的计划。中国的搜索引擎百度亦被传计划在今年3月份推出一款类似于ChatGPT的AI聊天机器人,最初版本将嵌入其搜索服务中。 虽然微软等可能乐于看到谷歌等在多年的搜索主导地位后走下坡路,但 ChatGPT 本身并不认为它的存在会影响谷歌的搜索业务。 当人们询问聊天机器人时,ChatGPT 回答说: 需要指出的是,ChatGPT 的响应是基于训练数据的,ChatGPT的工程师会可能特意训练聊天机器人处理此类查询,而不让人听起来过于自恋与自信。 值得一提的是,OpenAI也推出了识别工具,用来判断文本是否由AI生成,不过效果差强人意,又作矛又盾是件不容易的事情。好在有华裔小伙开发了识别ChatGPT的GPTZero,相信他的盾会比OpenAI提供的更好用一些。 生成式AI已是2023年AI产业的一大主流趋势。除了ChatGPT这类主要生成文本的AI外,AI生成图像、AI生成视频等也正成为科技巨头和创业新秀的竞逐焦点。 这些产品开始准备蚕食搜索引擎,也许它们低估了谷歌们的实力,不管谷歌是否会生存下来并与 ChatGPT 和其他AI共存,ChatGPT已经开始收费,证明很多应用需要,这些应用与搜索引擎的战争将在几年后全面展开。 Keyword: 内容生成
# シャーシ設計の最適化手法とその応用 シャーシ設計の重要性 シャーシは、自動車や機械装置の骨格とも言える重要な部分です。その設計は、製品全体の性能や耐久性に直接影響を与えます。シャーシ設計の最適化は、軽量化や剛性向上、コスト削減など、多岐にわたる目的で行われます。 最適化手法の種類 シャーシ設計の最適化には、いくつかの手法が存在します。以下に代表的な手法を紹介します。 1. トポロジー最適化 トポロジー最適化は、材料の配置を最適化することで、軽量化と剛性向上を同時に実現する手法です。有限要素法(FEM)を用いて、荷重条件や制約条件を考慮しながら、最適な形状を導き出します。 2. パラメトリック最適化 パラメトリック最適化は、設計変数を設定し、それらの変数を調整することで最適な設計を探す手法です。例えば、シャーシの厚みや形状を変数として設定し、最適な組み合わせを見つけます。 3. マルチディシプリナリー最適化(MDO) MDOは、複数の分野(構造、熱、流体など)を同時に考慮して最適化を行う手法です。シャーシ設計においては、構造強度と熱管理を同時に最適化することが可能です。 応用例 シャーシ設計の最適化手法は、さまざまな産業で応用されています。以下にその例を挙げます。 1. 自動車産業 自動車のシャーシ設計では、軽量化による燃費向上と、衝突安全性の両立が求められます。トポロジー最適化やMDOを用いることで、これらの要求を満たす設計が可能です。 2. 航空宇宙産業 航空機や宇宙機のシャーシ設計では、極限の軽量化と高い剛性が要求されます。パラメトリック最適化を用いることで、これらの要求を満たす最適な設計を導き出すことができます。 3. 産業機械 産業機械のシャーシ設計では、耐久性とコスト削減が重要な課題です。トポロジー最適化を用いることで、必要な強度を維持しつつ、材料使用量を最小化することが可能です。 まとめ シャーシ設計の最適化手法は、製品の性能向上やコスト削減に大きく寄与します。トポロジー最適化、パラメトリック最適化、MDOなどの手法を適切に活用することで、多様な要求を満たす最適な設計を実現できます。今後の技術進化により、さらに高度な最適化手法が開発されることが期待されます。 Keyword: シャーシ
Lighting and 3D rendering go hand in hand. If you rendered a 3D scene, object, or animation without lighting, it would be like taking photos or videos without any light (natural or not), like below. When done correctly, lighting can make a 3D environment look natural and realistic. However, if improperly done, the three-D visuals…
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