新华社北京7月13日电 一项新研究发现，鱼类悬停在水中时并不像看起来那般轻松，而是要消耗不少 能量。这一发现为设计灵活的水下机器人提供了新思路。 美国加利福尼亚大学圣迭戈分校等机构的研究人员在美国《国家科学院学报》上发表的论文介绍，科学 界长期以来认为鱼类悬停在水中是一种类似休息的状态，但他们通过实验发现，鱼类在悬停时消耗的能 量几乎是静止休息（即鱼类靠着水底支撑重量）时的2倍，这是因为它们需要不断划动鱼鳍以维持身体 稳定。 研究人员还对每条鱼的形态进行了测量，特别是鱼的重心与浮心（与鱼鳔的位置和形状有关）间的距 离，以量化鱼类的稳定性水平。 结果发现，尽管鱼鳔产生的浮力能让鱼类几乎处于"失重"状态，但重心与浮心不重合会导致鱼类身体倾 斜或翻滚，这迫使它们必须持续划动鳍来维持姿态。重心与浮心距离越大的鱼种，在悬停时消耗的能量 也越多，这表明对抗不稳定性是悬停耗能的一个关键因素。 此外，鱼类的体形和胸鳍位置也会影响其悬停效率。细长的鱼类悬停效率较低，反之则悬停效率更高。 胸鳍位置更靠后的鱼在悬停时一般耗能更少，研究人员认为这可能与杠杆效应更好有关。 研究人员表示，这些发现可用于设计水下机器人和其他设备。以往水下 ...

Core Insights - The article discusses a groundbreaking soft robotic crawler developed by a research team at the University of Southern Denmark, which utilizes the principles of Kirigami art for its design [1][3]. Design Innovation - The core innovation lies in integrating Kirigami metamaterials into the design of inflatable soft actuators, allowing for coordinated local deformation when inflated [5][7]. - At a pressure of 100 kPa, the actuator can achieve a uniform contraction of up to 32%, nearly double that of traditional inflatable structures without cuts [7][9]. Motion Mechanism - The research team analyzed the deformation mechanism through experiments and finite element simulations, revealing a nonlinear pressure-contraction relationship that allows for precise control [9]. - The actuator's surface features, resembling scales, create anisotropic friction properties essential for snake-like movement, with forward friction coefficients significantly lower than backward ones [9]. Modular Design - A dual-channel Kirigami actuator was developed, enabling complex motion control by independently inflating two parallel airways [11]. - By connecting multiple dual-channel modules, a three-module crawling robot was created, capable of various movement patterns such as linear crawling and serpentine motion [11][13]. Real-World Performance - The robot was tested in real-world scenarios, demonstrating remarkable adaptability across different terrains, including asphalt, narrow passages, and slopes [15][17]. - Friction tests showed that the inflatable Kirigami actuator exhibited directional friction anisotropy, ensuring effective forward movement during inflation cycles [15][16]. Future Potential - The design requires external air sources and control systems, but the compactness of the micro-pumps and low-power solenoids lays the groundwork for future autonomous designs [19]. - The research highlights the potential applications of this soft robotic technology in fields such as search and rescue, pipeline inspection, and environmental monitoring [16][19].

Core Viewpoint - The case of "internet celebrity lawyer" Xi Lv, who is not a licensed attorney, raises concerns about the verification processes of legal identities on social media platforms and the responsibilities of law firms in confirming the credentials of their associates [1][2][3] Group 1: Identity Verification Issues - Xi Lv, whose real name is Zhao Moumou, has been active on social media as a "beauty elite lawyer" and has gained significant followers by sharing legal knowledge and lifestyle content, but her identity as a lawyer has been called into question [1][2] - The Chengdu Judicial Bureau confirmed that Xi Lv is not a practicing lawyer and is currently under investigation for suspected criminal activity [1][2] - The law firm Dehe Hantong (Chengdu) reported Zhao Moumou to the police after discovering her alleged criminal activities, which led to media scrutiny of her lawyer identity [2] Group 2: Platform Responsibilities - The incident highlights the need for social media platforms to rigorously verify the identities of users claiming to be professionals in fields such as law, finance, and healthcare, as mandated by the Central Cyberspace Administration of China [2] - The lack of verification allowed Zhao Moumou to market herself under a false identity, indicating potential gaps in platform management and oversight [2][3] Group 3: Industry Trends and Concerns - The rise of short videos and live streaming featuring individuals claiming to be lawyers has become a popular trend, but it has also led to the proliferation of fake identities and misleading content [3] - The collapse of Xi Lv's persona exemplifies the broader issue of misleading professional identities in online marketing, necessitating clearer standards for content verification to protect public interests [3]

做TikTok运营，是不是经常感觉流量来了却抓不住，转化效果差到怀疑人生？看着同行轻松获得大量精准客户，自己却只能干瞪眼？别慌！今天就来给大家 分享TikTok精准获客矩阵截流技术，让你把流量牢牢握在手里！ 我认识一个做跨境母婴产品的团队，最开始他们一口气注册了5个TikTok账号，想着多账号布局能多占点流量。可账号内容就是单纯地展示产品，今天发婴 儿车，明天发奶瓶，账号没有统一的风格和人设，结果忙活了大半年，每个账号的粉丝都没超过1000。后来他们开始打造IP人设，把其中一个账号定位 成"超有经验的育儿妈妈"，分享自己带娃过程中的趣事、实用的育儿技巧，还会测评自家的母婴产品。没想到，短短两个月，这个账号的粉丝就突破了5 万，其他矩阵账号也跟着有了流量。 那到底该怎么打造TikTok矩阵账号的IP人设呢？首先，要明确目标受众。不同的人设吸引不同的人群，比如你的产品是针对年轻时尚的上班族，那IP人设可 以打造成职场穿搭达人；如果是面向宝妈群体，就像前面说的育儿妈妈人设就很合适。确定好受众后，再根据他们的喜好和需求，设计人设的性格、形象和 语言风格。 人设的性格要有记忆点。可以是幽默风趣的搞笑担当，也可以是专业可 ...

Core Insights - The article discusses the challenges businesses face in converting TikTok traffic into loyal customers and introduces a strategy to effectively capture and retain this traffic through a targeted IP persona approach [1] Group 1: TikTok Marketing Strategies - Businesses often struggle with high traffic but low conversion rates on TikTok, leading to a need for effective customer acquisition strategies [1] - A case study of a cross-border maternal and infant product team illustrates the importance of a unified content style and clear persona, which led to significant growth in followers after focusing on a single account with a relatable persona [1] - The article emphasizes the necessity of defining target audiences to create appealing personas that resonate with specific demographics, such as young professionals or mothers [2] Group 2: Persona Development - Successful persona development requires a distinct personality that can be humorous, professional, or nurturing, depending on the target audience [2] - Consistency in visual representation, whether through real or virtual personas, is crucial for brand identity, including style in clothing, makeup, and language that aligns with audience preferences [4] - Continuous content output that aligns with the established persona is essential for maintaining audience engagement and building emotional connections with followers [4] Group 3: Future Strategies - Creating an IP persona is just the first step in TikTok matrix operations; further strategies are needed to enhance account influence and drive traffic growth across multiple accounts [4]

Core Viewpoint - The controversy surrounding Zhu Dan's chicken leg distribution in the show "Fifty Kilometers Peach Blossom Dock" reflects deeper societal issues regarding gender bias and the expectations placed on public figures in the entertainment industry [1][6][10]. Group 1: Gender Bias and Public Perception - Zhu Dan's decision to give chicken legs to male guests while assigning a wing tip to the youngest female guest, Ouyang Didi, sparked discussions about gender bias and societal expectations [7][8]. - The incident highlighted the sensitivity of public figures to gender dynamics, as male guests quickly attempted to mitigate the situation by acknowledging the imbalance [9][11]. - Zhu Dan's previous statements about her daughter taking on caregiving roles were revisited, framing her current actions as a continuation of problematic gender norms [13][14][16]. Group 2: Celebrity Persona and Audience Expectations - The entertainment industry has seen a shift where high-profile figures are scrutinized for their words and actions, with audiences increasingly intolerant of perceived elitism or insensitivity [20][22]. - The concept of a "high-status persona" has become precarious, as any misstep can lead to public backlash, transforming past positive narratives into sources of criticism [19][24]. - Celebrities are now expected to navigate their public personas with caution, as the audience's emotional responses can quickly turn against them, especially when they appear disconnected from the realities of their viewers [43][44]. Group 3: Response Strategies in the Entertainment Industry - In light of controversies, many celebrities adopt a "cold treatment" approach, avoiding direct engagement with criticism, which can sometimes exacerbate public scrutiny [33][34]. - The effectiveness of traditional apology and explanation strategies is diminishing, as audiences increasingly value authenticity over scripted responses [39][40]. - The current environment demands that celebrities remain vigilant about their public statements, as even minor comments can be amplified into major controversies [42].

随着大健康行业的蓬勃发展，"专业"已然成为行业语境中的高频热词。然而，当专业能力的价值被不断 推高，一些不良现象也悄然滋生。部分从业者或企业缺乏真才实学但深谙包装之道，通过各种手段构建 虚假人设做背书试图浑水摸鱼。 在母婴市场上，有这么一批电商营养品品牌，如「膳力多」、「养能健」。它们靠着"营养师""医学博 士""某某医科大学毕业"迅速起号，在热门的身高管理赛道抢占了一席之地。然而，有知情人士却直 指：其中有不少是"虚假宣传"。 打造专业人设为品牌背书，成为电商营养品的起盘密码 从官方介绍中了解到，养能健用"前奥运会国家队驻队营养师、中国营养学会会员、国家首批注册营养 师吕清政"和"北京协和医学院博士、28年从业经历魏雪飞"打造出「产品联合研发人IP」；而膳力多则 用"中国医科大学毕业、8年营养补剂研发经验的姚希徵"打造出「品牌创始人IP」。同时，两个品牌在 抖音都打造出百万粉丝账号——奥运营养师吕爸、姚爸谈成长，为品牌做背书。 两个品牌的运营逻辑也十分相似，就是通过在各个社交平台持续输出一系列短视频内容。一边用"基因 决定下限，营养决定上限。咱就是在跟时间赛跑，你能七八岁去补的，就别拖到十九二十岁"的焦虑营 ...

在传统媒体陷入转型发展焦虑、各账号纷纷探寻触达年轻群体时，河南广播电视台旗下@大象新闻在B站平台掀起了一波粉丝增长的浪潮。 数据显示，5月22日至31日这短短10天内，@大象新闻的B站账号粉丝量净增101.4万，从原本的43.4万迅猛飙升至144.8万。截至6月9日，其B站粉丝总量 已进一步攀升至168.0万，单日最高增粉量达22.2万，同期抖音账号月增粉超150万。 然而，这一现象并非偶然。当Facebook、Twitter的新闻流量在2023年分别下降48%和27%时，TikTok、抖音等短视频平台正成为Z世代获取资讯的主阵地。 皮尤（Pew Research Center）的一项调查发现30岁以下成年人中三分之一常通过TikTok浏览新闻，而@大象新闻的爆发式增长，恰是传统媒体在短视频浪 潮中突破流量困局的典型样本，也揭开了一场关于主流媒体与Z世代内容生态重构的行业变革。 流量迁徙：传统媒体的短视频内容破局 牛津大学路透新闻研究院将"平台转移"列为2024年行业关键趋势，其核心是用户资讯接收习惯从长图文、社交媒体向短视频迁移。 在B站这片充满活力与创意的年轻人聚集地，@大象新闻凭借社会民生与热点内容，搭 ...

Core Viewpoint - The rise of elderly content creators on social media platforms like Xiaohongshu and Douyin showcases a significant shift in the digital landscape, where seniors aged 60 and above are not just passive consumers but active producers of content, gaining popularity among younger audiences [1][2][13] Group 1: Demographics and Engagement - As of December 2024, the number of internet users aged 60 and above in China is projected to reach 156 million, with an internet penetration rate exceeding 52.5% [1] - Topics related to elderly users have gained substantial traction, with discussions around "grandparents" reaching 690 million on Xiaohongshu and 10.53 billion on Douyin [1] - The number of elderly creators on Douyin has produced over 600 million videos, accumulating 40 billion likes by April 2021 [2] Group 2: Content Creation and Popularity - By June 2025, there are at least 77 elderly creators on Douyin with over 1 million followers, showcasing their ability to attract significant attention [2] - Notable elderly influencers include @潘姥姥 and @我是田姥姥, with follower counts of 34.28 million and 34.54 million respectively [4] - Elderly creators are redefining their image through vibrant daily life content, contrasting traditional perceptions of aging [4][5] Group 3: Commercialization Strategies - Elderly influencers primarily target younger audiences for monetization, with @周大爷不服老's followers aged 18-30 making up approximately 36.49% on Douyin [5] - The commercial partnerships of these creators often focus on food, beverages, and electronics, with @周大爷 collaborating on 9 occasions in the last 180 days [5] - Some elderly creators are leveraging their professional expertise to share knowledge, such as @郑奶奶科学育儿, who has generated significant revenue through live streaming [9] Group 4: Challenges and Innovations - Despite their popularity, elderly creators face challenges in high-intensity live streaming due to physical limitations, leading to alternative strategies like family involvement in content creation [8][10] - The emergence of IP-based models, such as the @时尚奶奶团, illustrates a shift towards structured commercialization, moving beyond individual creators to collective branding [10][11] - The commercial journey of brands like @老饭骨 demonstrates the potential for elderly influencers to evolve into new consumer brands, expanding their market reach [12] Group 5: Future Outlook - The growth of elderly content creators signifies a redefinition of age, challenging traditional notions of aging and showcasing the potential for continued engagement in digital spaces [13] - Balancing authenticity in content creation with commercial demands remains a critical consideration for the industry moving forward [13]

以下文章来源于声道 ，作者守一来了 声道 . 穿透市场迷雾，洞悉商业大势 作者： 守一来了 来源： 声道 "后面不管发生什么事情，我希望大家一定记住，张雪峰对得起大家，对得起这个社会。我真的这 一年我真的尽力了"。 这是高考前夕，张雪峰在他直播间的一番含泪告白。他是不是真的被什么利益团体打压，以至于不 得不从此销声匿迹于直播江湖，要不了几个月，就会看到结果。 可不管结果如何，张雪峰都已经赢麻了。每上一次热搜，都是对他教育生意的输血，也是对"张雪 峰配享太庙"人设的强化。 高考志愿填报早已是一门生意，但从未有人达到张雪峰这样的境界，一边大赚特赚一边还被人感激 涕零，捧上神坛。 张雪峰的生意有多赚钱？他今年推出的志愿填报服务， 梦想卡收费12999元，圆梦卡收费18999 元 。底层学子代言人的这个收费标准，也不知道有多少底层家庭消费得起。 即便收费如此高昂，也不是张雪峰亲自服务，而是他的团队老师。张雪峰个人的服务，据说近三年 都已被约满。 还不仅是志愿填报，张雪峰的生意近几年一直在高速扩张。比如，他直播所带来的巨大流量，很轻 易盘活了教辅生意。 有媒体根据平台数据推算，其直播带货的教辅资料月销超过10万套，单月 ...