Core Viewpoint - The rise of "AI Slop" content, characterized by low-quality, repetitive, and meaningless information generated by AI tools, is increasingly prevalent on the internet, particularly on social media platforms [1][2][4]. Group 1: Definition and Characteristics of AI Slop - "AI Slop" refers to low-quality content produced by AI tools, including text, images, and videos, often found on social media and automated content farms [2][3]. - The term "Slop" originally described cheap and low-nutrition items, and its modern usage highlights the poor quality of AI-generated content that clutters online spaces [2][3]. - AI Slop differs from "deepfakes" and "AI hallucinations" in that it is not necessarily intended to deceive but results from careless content production without verification [3]. Group 2: Causes of AI Slop Proliferation - The proliferation of AI Slop is driven by the increasing power and low cost of AI technology, enabling rapid content generation that prioritizes clicks and ad revenue over quality [4][5]. - Tools like ChatGPT, Gemini, and Sora allow for quick production of readable content, leading to the rise of content farms that prioritize quantity over quality [4]. - Algorithms on social media platforms often favor engagement metrics over content quality, further exacerbating the issue of AI Slop [4][5]. Group 3: Consequences of AI Slop - The overwhelming presence of AI Slop can lead to a decline in the visibility of credible sources, blurring the lines between truth and fiction [5][6]. - This trust crisis can have tangible effects, as misinformation spreads more rapidly when users cannot discern credible information from AI-generated content [5][6]. Group 4: Potential Solutions and Industry Responses - Some companies, like Spotify, are beginning to label AI-generated content and adjust algorithms to reduce the recommendation of low-quality material [6]. - The C2PA (Coalition for Content Provenance and Authenticity) standard aims to embed metadata in digital files to trace their origins, helping to distinguish between human-created and AI-generated content [6]. - The most effective defense against AI Slop lies in individual user behavior, encouraging users to verify sources and support genuine creators [6][7].

科技日报讯 （记者陆成宽）12月8日，由中国神华、包神铁路联合北京通号设计院等单位共同承担的国 家能源集团十大重点科技攻关项目"重载列车群组运行控制系统技术研究与应用"取得重大突破，成功实 现世界首列3.5万吨级重载群组列车试验开行。此次试验在全球范围内首次实现多列货运列车不靠机械 挂钩、仅靠无线信号就实现协同行驶。 3.5万吨编组列车是我国目前重载列车试验运行最长编组列车。7列群组试验列车分别在包神铁路纳林沟 门、沙坝子、关碾房和达拉特北四个车站通过"虚拟连挂"方式，动态编组成为一列"群组列车"，以紧追 踪协同运行方式，运行至万水泉南南场自动解编进站。此次试验的成功将重构既有铁路运输技术体系， 为世界重载铁路技术带来新变革。 "重载列车群组运行控制系统技术研究与应用"项目，旨在通过"虚拟连挂"技术，将既有2万吨、3万吨长 大编组列车间的"车钩硬连接"变为"虚拟软连接"，实现长大编组列车按照多列小编组以"群组方式"自主 紧密跟随运行。项目自2022年开展以来，创造了多项世界第一，先后在理论创新、规范标准、仿真实 验、成套设备、试验段建设以及现场试验验证等方面取得了一系列关键突破，完成了单机、5000吨空重 车 ...

装甲钢是国防军工和特种装备的核心材料。因其超高强度、高硬度、强韧性及低导热等极端特性，装甲 钢生产长期面临加工难、成本高、效率低等瓶颈。项目负责人段爱平介绍，针对装甲钢加工过程中面临 的高温、高应力、强磨损等耦合难题，研究团队提出了"超硬刀具+多层复合纳米涂层"的创新组合方 案。该方案采用立方氮化硼刀具与多层涂层，结合大刃口钝化、负前角几何优化及断屑槽型设计，使刀 具抗黏接磨损能力提升40%，切削速度可达每分钟300－500米，较传统硬质合金刀具提高1.5倍。 同时，团队还制定了"工艺+参数+冷却"优化策略。他们通过高压、大流量的冷却方式，利用高压射流 辅助断屑和排屑，可综合降低切削温度30%以上，刀具消耗量减少15%－30%。此外，与传统方法相 比，"高速大进给"加工策略可提升材料去除率2倍，加工时间缩短30%，表面完整性达标率从70%提升 至95%。 "这一系列技术创新，不仅解决了装甲钢加工周期长、质量不稳定的问题，还显著提升了加工效率和产 品质量。"段爱平介绍，"'高速大进给'工艺填补了国内装甲钢高效加工空白。"此次技术突破，不仅直接 支撑了国防军工装备生产的提质增效，还形成了一套具有自主知识产权的技术 ...

12月15日，工业和信息化部附条件许可了长安牌和极狐牌两款L3级自动驾驶车型产品，我国自动 驾驶汽车产业正式从"技术验证"迈向"量产应用"新阶段。 L3级自动驾驶的落地，是涵盖整车、零部件、软件算法、通信、数据服务等多主体协同的系统性 工程。业内人士表示，此次获批是在社会广泛关注和高度期待下，主管部门作出的重要安排，将带动新 出行、新保险等衍生业态发展。 何为L3级自动驾驶？即将开展的上路试点意味着什么？科技日报记者就此采访了有关专家。 目前，我国将驾驶自动化分为0级到5级共6个级别。根据《汽车驾驶自动化分级》标准，L0代表完 全由人类驾驶，L1—L2属于驾驶辅助阶段，L3—L5则逐步过渡到有条件自动驾驶、高度自动驾驶，直 至完全自动驾驶。 第一问：何为L3级有条件自动驾驶？ 其中，L2到L3是辅助驾驶向自动驾驶的关键跨越。工业和信息化部装备工业发展中心副主任刘法 旺介绍，L3对应的是有条件自动驾驶，意味着在特定条件下，驾驶自动化系统可以持续执行转向、加 速、制动等驾驶任务，驾驶员无需持续关注路况，但必须在系统请求时及时接管。 第二问：此次许可开展了哪些安全评估？ 此外，刘法旺透露，此次试点采取"小切口切入、 ...

Core Viewpoint - The rise of "liquid masks" as a nasal spray product is linked to the recent outbreak of influenza, attracting consumers looking for alternatives to traditional masks, despite concerns about its efficacy and potential misleading claims [1][2]. Group 1: Product Description and Popularity - "Liquid masks" are marketed as a nasal spray that creates a "physical barrier" to block viruses, claiming a "99.9% blockage rate" and promoting a slogan of "everyone can take off their masks" [1]. - The product has gained popularity on e-commerce platforms, with some brands reportedly selling over 1 million bottles annually, appealing to consumers who find traditional masks uncomfortable or unattractive [1][2]. Group 2: Expert Opinions on Efficacy - Experts express skepticism about the claims made by "liquid masks," emphasizing that they do not replace traditional masks, which have established scientific backing and effectiveness in reducing virus transmission [3][4]. - The current market offerings of "liquid masks" are classified as everyday consumer products rather than medical devices, lacking large-scale clinical validation [2][4]. Group 3: Limitations and Concerns - The protective effect of "liquid masks" is considered limited, as they may not effectively filter out aerosolized viruses smaller than 0.1 microns, and their safety and long-term effects on respiratory health remain unassessed [5][6]. - Some experts highlight that while the gel in "liquid masks" can theoretically capture some viruses, the actual effectiveness is highly dependent on application technique and does not account for oral transmission of viruses [6].

在今年举办的第七届天津国际直升机博览会上，该型机凭借精准的定位和可靠的工业设计，一举斩获 160架的确认订单与意向订单。 （文章来源：科技日报） AR-E800是中国航空工业集团第一款以"商业成功"为核心目标打造的eVTOL产品。在立项之初，研发团 队便深入市场，重点针对山区电网铁塔建设、基础设施工程吊装、生鲜农产品转运等通航场景需求展开 调查研究，并基于相关需求，采用了多旋翼构型和模块化设计。 记者12月12日获悉，由中国航空工业集团自主研制的800公斤级重载电动垂直起降飞行器（eVTOL） AR-E800近日完成首飞任务，标志着我国在低空物流领域迎来了一款全新的、智能化的重载运输平台。 AR-E800拥有一个可快速拆卸的多功能货舱，这使得无人机可灵活地在"腹内带货"与"外部吊挂"两种运 输模式间切换。其最大任务载重量达300公斤，既可以向高山基站运输设备、在复杂地形进行工程作 业，还可承担景区物资保障、应急物资投送等任务。 首飞当日，随着指令下达，飞控员推动操控杆，启动飞行程序。刹那间，AR-E800机臂末端的六副共轴 旋翼同速飞旋，发出一阵低沉而有力的轰鸣声。在地面所有人员的注视下，这个自重与载重合计达 ...

美国密歇根州立大学研究团队利用捐赠的人类干细胞，成功开发出全球首个"人源化"心脏类器官，能在 暴露于炎症环境时表现出心房颤动特征。这一突破为研究心律失常提供了前所未有的活体人体组织模 型，有望打破该领域30多年来无新药问世的僵局。这项发表于《细胞·干细胞》的研究，标志着人类在 对抗心律失常的道路上迈出了关键一步。 心房颤动影响全球约6000万人，但由于缺乏准确的人类心脏模型，药物研发长期停滞。近30多年来，没 有新药物被开发用于治疗心房颤动。现有疗法往往针对症状而非潜在机制，因此人们对这种疾病仍然治 疗不力。 2020年起，密歇根州立大学发育与干细胞生物学部艾托·阿吉雷团队利用捐赠的人类干细胞，培育出直 径约数毫米的三维心脏类器官。这些类器官不仅拥有类似真实心脏的腔室结构和血管网络，还能自主节 律性跳动。而且这些类器官的节律性搏动非常强劲，无需显微镜即可观察到。 类器官大小与扁豆相仿，精确度极高，使团队能够以前所未有的方式研究心脏发育、疾病和药物反应。 此次研究的关键进展在于，团队首次在类器官中引入了免疫细胞。博士后研究员科林·奥罗克发现，当 类器官暴露于炎症环境时，会出现类似房颤的心律失常；而使用抗炎药物后 ...

Core Viewpoint - The rise of "AI Slop" content, characterized by low-quality, repetitive, and meaningless information generated by AI tools, is increasingly prevalent on the internet, particularly on social media platforms [1][2][4]. Group 1: Definition and Characteristics of "AI Slop" - "AI Slop" refers to low-quality content produced by AI tools, including text, images, and videos, often found on social media and automated content farms [2][3]. - The term "Slop" originally described cheap and low-nutrition items, and its modern usage highlights the poor quality of AI-generated content that clutters information channels [2][3]. - Unlike "deepfakes" or "AI hallucinations," which have specific deceptive intents or technical errors, "AI Slop" is produced without regard for accuracy or logic, leading to a proliferation of meaningless content [3]. Group 2: Causes of Proliferation - The widespread creation of "AI Slop" is driven by the increasing power and low cost of AI technology, allowing users to generate content quickly for clicks and ad revenue [4]. - Tools like ChatGPT, Gemini, and Sora enable rapid content generation, leading to the emergence of content farms that prioritize quantity over quality [4]. - Algorithms on social media platforms often favor engagement metrics over content quality, further incentivizing the production of "AI Slop" [4]. Group 3: Consequences of "AI Slop" - The overwhelming presence of "AI Slop" can obscure the line between credible and false information, leading to a trust crisis where misinformation spreads rapidly [5][6]. - As "AI Slop" proliferates, it diminishes the visibility of trustworthy sources in search results, complicating users' ability to discern fact from fiction [5][6]. Group 4: Potential Solutions - Some companies, like Spotify, are beginning to label AI-generated content and adjust algorithms to reduce the recommendation of low-quality material [8]. - The C2PA (Content Authenticity Initiative) aims to embed metadata in digital files to trace their origins, helping users identify whether content is human-created or AI-generated [8]. - The most effective defense against "AI Slop" lies in individual user behavior, encouraging people to verify sources and support genuine creators [8].

"我们发现，语言在大脑视觉系统中扮演组织和调节的角色，这启发我们思考，真正的智能也许要像人 脑一样，让语言去统筹感知、记忆和推理，而不是简单地并列处理多种模态。"北京大学心理与认知科 学学院及人工智能研究院助理教授朱毅鑫说。 研究团队同时将脑卒中患者数据作为对照实验。结果表明：患者语言—视觉通路受损越严重，其视觉脑 区活动越像"纯视觉模型"；当语言—视觉通路被破坏，语言对视觉的调节作用随之消失，成为"语言调 节视觉"的直接证据。北京大学心理与认知科学学院及人工智能研究院教授毕彦超表示，在用AI模型理 解大脑的同时，脑损伤患者的脑活动也验证了模型的机制。 当我们看到"玫瑰"时，大脑只是单纯在"看"吗？北京大学联合北京师范大学、山西医科大学第一医院的 研究团队发现，语言不仅塑造思维，更在潜移默化中改变人们"看世界"的方式。相关研究成果15日发表 于《自然·人类行为》。 语言是否影响视觉是科学界的长期争论。此次，研究团队利用人工智能（AI）模型构建"数字实验室"， 将只学习图像的"纯视觉模型"与学习过图文的"视觉—语言模型"进行对比，并将其内部表征与四组健康 人的大脑视觉皮层活动比对。结果显示，被语言"指导"过的A ...

Core Viewpoint - The rise of "liquid masks" as a nasal spray product is linked to the recent outbreak of influenza, attracting consumers looking for alternatives to traditional masks, despite concerns about its efficacy and potential misleading claims [1][2]. Group 1: Product Description and Popularity - "Liquid masks" are marketed as a nasal spray that creates a "physical barrier" to block viruses, claiming a "99.9% blocking rate" and promoting a slogan of "everyone can take off their masks" [1]. - The product has gained popularity on e-commerce platforms, with some brands reportedly selling over 1 million bottles annually, appealing to consumers who find traditional masks uncomfortable or unattractive [1][2]. Group 2: Expert Opinions on Efficacy - Experts express skepticism about the claims made by "liquid masks," emphasizing that they do not replace traditional masks, which have established scientific backing for their effectiveness in reducing virus transmission [3][4]. - The traditional masks are noted for their clear technical standards and proven ability to reduce droplet transmission by over 70% when worn correctly [3]. Group 3: Regulatory and Safety Concerns - "Liquid masks" are classified as everyday consumer products rather than medical devices, lacking large-scale clinical validation for their advertised protective effects [2][4]. - Legal experts warn that the claims of "99.9% virus blockage" may constitute false advertising, urging consumers to be cautious and for e-commerce platforms to monitor misleading promotional content [2]. Group 4: Limitations and Risks - The protective effect of "liquid masks" is limited, as they primarily rely on a gel layer that may not effectively filter out viruses smaller than 0.1 microns, and potential side effects such as nasal dryness and irritation have not been thoroughly evaluated [5][6]. - Experts highlight that while the gel may adsorb some viruses, the overall effectiveness is compromised by the possibility of virus transmission through the mouth, indicating that the product should not be relied upon as a primary protective measure [6].