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网球怎么练?这份指南送给初学者(健身视野·服务站)
Ren Min Ri Bao· 2025-07-09 22:32
安徽合肥"享受运动 健康生活"开放日活动现场。 施 觉摄(影像中国) 北京市民在全民健身活动中学习网球。 王子诚摄(影像中国) 动作演示:湖北省网球学校教练吴杰隆 (罗敏彰摄) 随着中国网球运动员在赛场上连连取得突破,看网球比赛、打网球成为健身新时尚,但不少初学者常常 感到"上手难、进步慢"。网球怎么练?本报记者邀请专家带您探探门道。 如何入门? 作为从教23年的网球教练,北京市朝阳区明诚外国语学校体育教师金路认为,练好基本功、科学训练、 循序渐进,是初学者入门的关键。在初学阶段,球感是门槛,技术动作是地基,身体移动是关键。 一、球感靠"多玩" 类似杂耍的抛接球、颠球、拍球等练习都是很好的球感训练。在进行颠球练习时,新手握拍方式可以采 用"大陆式"——想象手里握着一把菜刀切菜,或握着一把锤子。这种握法通用于发球、双手反拍击球、 切削球、截击等多项技术动作。 二、动作要规范 初学者可以先学正手与反手基本击球,动作可分解为三步——侧身引拍、击球、随挥。 正手侧身引拍:以右手持拍为例,采用东方式握拍,若来球飞向自己的身体右侧,立即向右侧身,同时 根据来球的深浅,上左脚或撤右脚,同步将球拍拉开,拍柄底盖指向来球,拍头 ...
2018年李想回复为什么不像友商多开一点发布会?
理想TOP2· 2025-07-07 15:04
Core Viewpoint - The company emphasizes the importance of understanding what it wants, what it is willing to give up, and the responsibilities it must bear in order to build a solid and value-driven enterprise [1][2][3]. Group 1: Understanding Goals and Responsibilities - The company believes that knowing what it wants is crucial, especially when financial resources are limited, and this understanding helps in making informed decisions [1]. - It is essential to recognize what sacrifices are necessary for long-term success, rather than seeking quick financial gains or superficial recognition [1][2]. - The company stresses the importance of accountability and consistency in actions and words, which builds trust and credibility over time [1][3]. Group 2: Addressing Anxiety and Pain - The company identifies a lack of wisdom training as a core reason for anxiety and pain, suggesting that understanding one's goals and responsibilities can alleviate these feelings [4]. - It promotes a culture where individuals support each other in identifying their desires and analyzing what can be sacrificed, fostering a strong organizational framework [3][4]. - The company acknowledges that anxiety will always exist due to new challenges, but it can be managed through the development of skills and wisdom [4].
迎接AI——理性看待变革,积极布局未来
创业邦· 2025-07-07 10:27
在2025年北极光创投第十八届CEO峰会的圆桌论坛上, 北极光创投合伙人林路 携 Rolling AI创始合 伙人甘艺凡 , APUS创始人兼CEO李涛 , 北极光创投高级顾问李乐丁 三位嘉宾围绕"迎接AI——理 性看待变革,积极布局未来"这一主题展开探讨,从不同角度探讨了AI技术发展、场景落地与组织变 革之间的关系。 李乐丁从技术角度切入,指出大模型已经进入能力边界与不确定性凸显并存的新阶段,单纯追逐参数 规模意义有限,真正价值将来自与具体产品的深度融合,形成可持续场景价值。李涛随后从企业实操 层面,分享了APUS在代码生成、创意设计、医疗预诊等多个环节的AI落地经验,强调构建自身模型 体系和数据资产作为长期护城河是关键。甘艺凡结合超百个咨询项目经验,总结企业在应用AI时最常 见的误区是"高估短期价值、低估长期潜力",建议企业围绕"为什么要做?做什么?怎么做?"构建AI 应用的战略路径,并推动组织与文化的深度调整。林路最后提醒CEO们谨防"战略空心化",一切部署 都应回到业务本质,从实际业务出发落地AI。 以下为整理的圆桌讨论实录,有编辑与删节。 林路 :关于AI的未来,有人乐观,有人很谨慎,在座的几位嘉宾 ...
重温《英伟达GTC 2025》:挖掘AI算力需求预期差?
2025-07-07 00:51
重温《英伟达 GTC 2025》:挖掘 AI 算力需求预期差? 20250706 摘要 美股算力领域表现突出,主要由推理和训练需求共振驱动,需关注大模 型和应用,而非仅依赖产业链数据。GTC 大会参会人数增加,AI 产业人 士占比提升,表明其对 AI 产业的重要性增强,蕴含大量信息差和预期差。 算力需求空间与 TOKEN 量密切相关,计算需求不断增加推动了这一趋 势的发展。海外算力公司的涨幅显著,仅靠传统业绩思路无法解释,需 深入分析 TOKEN 量如何影响计算需求,以及这些因素如何驱动未来趋 势。 Agentic AI 是推理模型衍生出的 AI 范式,强调任务分布执行和规划, 以完成某个任务为终极目标,通过拆解、分布、规划和执行来实现,能 够处理连续、多步骤的复杂或简单任务。 黄仁勋指出,现在不仅有预训练阶段,还有后训练(post training)和 测试时间(test time),这三个阶段都存在算力需求通胀,因此现在有 三条 skin law 曲线。 Q&A 全球 AI 算力跟踪的现状如何?与以往相比有哪些变化? 当前全球 AI 算力的跟踪方式与以往有显著不同。过去主要通过产业链数据进行 跟踪,但这种 ...
cVLA:面向高效相机空间VLA模型的关键位姿预测方法
具身智能之心· 2025-07-06 11:54
本文只做学术分享,如有侵权,联系删文 写在前面 视觉-语言-动作(VLA)模型为复杂机器人操作任务提供了强有力的框架,但训练成本往往很高。研究提出了一种新的VLA方法,利用视觉语言模型(VLMs)在 2D图像上的出色表现,直接推断机器人末端执行器在图像帧坐标中的位姿。与以往输出低级控制指令的VLA模型不同,该模型预测轨迹路标,不仅训练更高效, 还与机器人实体无关。尽管设计轻量,其下一个token预测架构仍能有效学习有意义且可执行的机器人轨迹。此外,还探索了深度图像的潜力、解码策略等推理技 术,以及基于演示的动作生成。模型在模拟数据集上训练,展现出良好的模拟到现实迁移能力,并通过模拟和真实数据结合的评估,证明了在真实机器人系统上 的有效性。 >> 点击进入→ 具身智能之心 技术交流群 点击下方 卡片 ,关注" 具身智能 之心 "公众号 更多干货,欢迎加入国内首个具身智能全栈学习社区 : 具身智能之心知识星球 (戳我) , 这里包含所有你想要的。 作者丨 Max Argus等 编辑丨具身智能之心 1. 引言 视觉-语言-动作(VLA)模型通过融合视觉、语言和交互数据,实现细粒度感知与动作生成,能解决多种任务。但V ...
钢更多、气更盈、骨更硬(金台点兵)
Ren Min Ri Bao· 2025-07-05 22:22
Core Viewpoint - The upcoming military parade on September 3rd in Tiananmen Square will showcase domestically produced main battle equipment, reflecting the advancements in China's military capabilities and the country's commitment to self-reliance in defense technology [1][2]. Group 1: Military Modernization - The military parade will feature advanced weaponry that demonstrates the significant progress in China's military modernization, including new aircraft carriers, destroyers, stealth fighters, drones, and strategic missiles [1]. - The rapid development and deployment of new military technologies are crucial for enhancing combat effectiveness and ensuring national security [2]. Group 2: Historical Context and Lessons - Historical experiences, particularly during the Anti-Japanese War, highlight the importance of modern weaponry in achieving military success and the high costs associated with outdated equipment [1]. - The evolution of warfare necessitates continuous updates in combat strategies and training to effectively utilize new technologies [2]. Group 3: Training and Readiness - The military emphasizes the need for soldiers to master new equipment to maintain and enhance combat readiness, advocating for integrated training and technological proficiency [2]. - The ongoing modernization efforts are not only about acquiring new weapons but also about ensuring that personnel are well-trained to use them effectively in real combat scenarios [2].
来场“暴汗”挑战!体能训练成健身新风尚
Xin Hua Wang· 2025-07-04 01:10
Core Insights - The rise of physical training as a new fitness trend in China is highlighted by a recent physical challenge event in Chongqing, attracting around 200 participants from various backgrounds [1][2] - The shift from traditional fitness goals to a focus on functional training is evident, with increasing popularity of events like CrossFit, HYROX, and Spartan races [2][3] - The social aspect of fitness is becoming more pronounced, with online communities and social media engagement driving participation and creating a sense of belonging among fitness enthusiasts [3] Group 1 - The physical challenge event showcased various demanding sports activities, emphasizing the accessibility of physical training for enthusiasts beyond professional athletes [1] - Participants reported increased motivation and enjoyment from engaging in functional training, which enhances overall physical capabilities [2] - The trend indicates a broader shift in consumer preferences towards diverse and functional fitness experiences, moving beyond traditional gym settings [2] Group 2 - The emergence of physical training events is linked to a growing awareness of health and fitness among the general population, reflecting a shift in lifestyle and consumption patterns [3] - The integration of community and social elements in fitness training is fostering stable training habits and encouraging new participants to join the fitness movement [2][3] - The rise of physical training and events is seen as a catalyst for upgrading sports consumption and promoting the integration of fitness into daily life [3]
科创板年内新增最大IPO融资项目拆解:摩尔线程的商业化初探
Hua Er Jie Jian Wen· 2025-07-03 13:09
Core Viewpoint - The competition for the title of "first domestic GPU stock" has begun, with major players like Moer Technology and Muxi Integrated Circuit both advancing towards IPOs, indicating a significant move towards capitalizing the domestic GPU market [1][8]. Group 1: Company Overview - Moer Technology is highlighted as the most notable player among the "four little dragons" of domestic GPUs, with a core team primarily from Nvidia [2]. - The company's MTT S80 graphics card has a single-precision floating-point performance close to Nvidia's RTX 3060, and its self-built GPU computing cluster outperforms similar foreign counterparts [2][12]. Group 2: Financial Performance - In 2024, Moer Technology's revenue reached 438 million yuan, representing a year-on-year increase of over 200% [3]. - Despite the revenue growth, the company incurred a net loss of 1.492 billion yuan due to R&D expenses of 1.359 billion yuan, although this loss has decreased by about 10% year-on-year [4]. Group 3: Fundraising and Investment Plans - Moer Technology plans to raise 8 billion yuan for the development of AI training and inference chips, graphics chips, and AI SoC chips, marking the largest fundraising scale among new IPO projects on the Sci-Tech Innovation Board this year [5][6]. Group 4: Product Strategy and Market Position - Moer Technology's product lineup includes AI computing, professional graphics acceleration, desktop graphics acceleration, and intelligent SoC, catering to government, enterprise, and individual consumer needs [9]. - The AI computing products generated 336 million yuan in revenue in 2024, accounting for over 70% of total revenue, benefiting from the rapid growth in demand for large model training and inference deployment [11][12]. Group 5: Competitive Landscape - Moer Technology's revenue in 2024 was only about 60% of Muxi Integrated Circuit's revenue, indicating a competitive challenge [18]. - The company is shifting its strategy to focus more on professional graphics acceleration and AI computing products, as its consumer-grade products have struggled in a competitive market [20][21]. Group 6: Future Outlook - The management anticipates that Moer Technology could achieve profitability as early as 2027, with 440 million yuan in sales contracts already in progress [23][24].
乒乓球里门道多(健身视野·服务站)
Ren Min Ri Bao· 2025-07-03 00:32
Group 1 - The article emphasizes the importance of mastering basic techniques in table tennis for skill progression, highlighting that many beginners overlook foundational movements, making later adjustments more challenging [6][10]. - It discusses the two main grip styles: the vertical grip, suitable for beginners, and the horizontal grip, which is more advanced and requires a solid foundation [7]. - Proper stance and weight distribution are crucial for effective play, with recommendations for foot positioning and body posture to ensure readiness and agility [8][9]. Group 2 - The article outlines targeted training methods, such as fixed-point multi-ball practice and movement hitting drills, to enhance muscle memory and practical skills [11]. - It advises on creating a structured training plan that progresses from basic to advanced techniques, emphasizing the importance of learning from experienced players [12]. - Common training pitfalls are identified, including improper stance, lack of awareness of opponent movements, and reliance on arm strength alone [14][15][16]. Group 3 - The article highlights the significance of tactical awareness in high-level competition, suggesting that understanding an opponent's weaknesses can inform strategic play [18]. - It discusses the mental aspect of the game, advocating for a calm mindset and the ability to reset after mistakes to maintain performance [20]. - Strategies for disrupting an opponent's rhythm are presented, emphasizing the value of unpredictability in gameplay [21]. Group 4 - The article provides guidance on selecting appropriate table tennis equipment, detailing the differences between various types of paddles and balls to suit different skill levels [22].