Ke Ji Ri Bao
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中山大学研发数据集入选WMO全球温度变化研究报告
Ke Ji Ri Bao· 2026-02-15 01:52
日前,世界气象组织(WMO)发布的2025年全球温度变化研究报告中,一份来自中国的数据集成 为核心支撑——中山大学大气科学学院教授李庆祥团队(以下简称"团队")自主研发的全球温度数据 集"China-MST3.0",与美国、英国、日本及欧洲中期天气预报中心(ECMWF)等7个团队研发的数据 集共同构成权威信息源,确认2025年成为有记录以来三个最暖年份之一。 全球温度监测是气候变化研究的基础,但其数据集的建立面临着历史观测非均一性问题突出、高海 拔和极地等区域观测稀疏、海陆数据融合难度大、不确定性评估复杂等多重挑战。 2024年,团队发现,在传统的高、低频分别重建的数据集中,部分区域重建数据仅有长期变化趋 势,缺乏年际变化特征的问题,于是针对性地发展了观测约束算法,用实际观测对数据集进行真实性约 束,剔除了不合理网格点数据,使得不同区域的气候变化规律更贴合实际。 去年推出的3.0版本数据集实现了多项关键突破。"国际上不同数据集的平均温度数据差异很小,但 昼夜温差的数据分歧却极大,这正是我们致力攻克的关键。"李庆祥介绍,3.0版本系统梳理了平均最高 温、最低温及昼夜温差数据,对原始数据做了全面的质量控制和序列均 ...
人工智能助力 中国团队攻克经典数学难题
Ke Ji Ri Bao· 2026-02-14 23:37
据了解,此次突破带来了该问题研究的方法论变革。此前DeepMind的AlphaEvolve仅实现11维单点优化,方法难以普适。PackingStar重新定义问 题,将高维几何难题转化为代数计算,形成跨维度迁移路径,突破了传统对称构造思路,发现多维度持平纪录的非对称构型。团队形成稳定人机 协作模式:人类提出研究边界,AI高速构造搜索,人类验证抽象结果,让高维几何探索从单点尝试走向系统推进。 1694年,牛顿与格雷戈里提出三维空间亲吻数问题:中心球周围最多可紧贴放置多少颗相同球体?牛顿认为是12,格雷戈里主张13,该猜想直至 1953年才被证实。作为希尔伯特第十八问题的局部形式,亲吻数问题关联格子理论、球面码等数学分支,且与卫星通信、量子编码、数据压缩等 工程技术紧密相关。2022年,数学家玛丽娜·维亚佐夫斯卡因8维与24维球体堆积最优解证明获菲尔兹奖。 高维空间中,亲吻数问题迅速进入研究"无人区"。过去50年,该领域仅7次实质性进展,方法难以迁移复用。 人类与AI结伴,共同探索科学的未至之境,并且在基础科学研究中实现新的发现与创新、推动社会发展,这可说是人类科学探索史上前所未有的 浪漫图景。上海科学智能研究院( ...
纯度达99.3%!“人工肺”核心原料实现重大技术突破
Ke Ji Ri Bao· 2026-02-14 14:48
(文章来源:科技日报) 4-甲基-1-戊烯(4M1P)是合成聚4-甲基-1-戊烯(PMP)的关键单体,PMP正是制造ECMO膜式氧合器 膜材料的核心原料。体外膜肺氧合(ECMO)是体外生命支持技术的一种,也叫"人工肺",被视为危重 患者的"救命神器"。 人民财讯2月14日电,13日,记者从大连理工大学获悉,该校化工学院梁长海教授领衔的科研团队与中 国石油化工股份有限公司镇海炼化分公司合作攻关,在百吨级丙烯二聚试验装置上首次成功产出合格产 品4-甲基-1-戊烯(4M1P),纯度达99.3%,优于进口同类产品。标志着我国在该高端特种单体的合成 领域取得阶段性重大技术突破。 ...
安世半导体风波再起!荷兰“逆行”做法毫无道理
Ke Ji Ri Bao· 2026-02-14 05:14
安世半导体在全球芯片,特别是车载芯片供应链中扮演着举足轻重的角色。荷兰政府和司法机构的粗暴干预,导致该公司荷兰总部和中国分部在事实上分 裂,既给安世半导体自身带来严重损失,更导致了全球车企的"缺芯"危机。 据外媒报道,荷兰安世半导体去年10月和11月收入大幅下降,现金流一度入不敷出,当地多家银行暂停对其贷款。欧洲车企面临芯片短缺危机,部分企业 甚至计划自行购买晶圆,运送到中国工厂进行加工封装。日本车企本田多家工厂先后减产或停产,尼桑也被迫削减最畅销车型Rogue的生产。 去年11月,荷兰政府暂停对安世半导体的接管,国际社会一度看到危机结束的曙光。而此次荷兰法庭的裁决,不仅没有向着解决危机进一步,反而是在大 踏步地"逆行"。根据法庭发布的公告,这种调查可能持续很长时间,"超过6个月并不罕见"。 荷兰法庭继续干预安世半导体运营可以说是毫无道理。其在公告中提到的导致上述裁决的三大原因,无一站得住脚。 一是法庭指出,在美国制裁的威胁下,中方股东控制下的安世半导体并未按照荷兰经济事务部的要求行事。根据法庭公布的详细裁决文件,面对美国的制 裁,中方运营团队更侧重于通过减少对美国供应商的依赖予以应对。而荷兰方面则希望安世半 ...
【科技日报】灵长类大脑“举一反三”机制揭秘
Ke Ji Ri Bao· 2026-02-14 03:40
研究发现,猕猴在学习相似的新任务时,速度会随训练的推进而显著提升,复习旧任务的效率大幅 提高,但面对与原有规则相悖的反向配对任务时,学习速度明显变慢,灵长类动物和人类有着相似的规 律。 通过对神经活动的深入分析,研究团队发现,猕猴背外侧前运动皮层的神经群体活动会自发形成两 个近乎正交的表征空间,即决策子空间和刺激子空间。他们还通过实验验证了两个子空间的功能关联, 两个子空间的近乎正交性让稳定的知识存储与灵活的全新信息编码得以同时实现,彻底避免了"学新忘 旧"或"守旧难学新"的问题。 (原载于《科技日报》 2026-02-14 02版) 会打网球的人打羽毛球上手更快,掌握一种解题思路后能轻松应对同类题目,大脑是如何复用已有 知识做到"举一反三"的?中国科学院自动化研究所、解放军总医院第九医学中心、吉林大学第一医院联 合研究团队首次发现,灵长类大脑会通过领域特异性的图式复用,以及近乎正交的神经表征空间组织, 巧妙平衡学习的稳定性与灵活性。相关研究成果近日发表在国际知名期刊《自然-通讯》上。 论文通讯作者之一、解放军总医院第九医学中心顾建文教授13日告诉科技日报记者,该机制的发现 从创新角度解析了大脑"学会学习"的 ...
正听丨荷兰法庭裁决调查安世半导体毫无道理
Ke Ji Ri Bao· 2026-02-14 03:06
胡定坤 荷兰法庭继续干预安世半导体运营可以说是毫无道理。其在公告中提到的导致上述裁决的三大原因,无 一站得住脚。 一是法庭指出,在美国制裁的威胁下,中方股东控制下的安世半导体并未按照荷兰经济事务部的要求行 事。根据法庭公布的详细的裁决文件,面对美国的制裁,中方运营团队更侧重于通过减少对美国供应商 的依赖予以应对。而荷兰方面则希望安世半导体满足美国的要求、减少与中国的联系,换句话说就 是"举手投降"。 例如,2025年6月,美国商务部在与荷兰外交部的会晤中多次提到要更换安世半导体的中方首席执行 官。9月,荷兰经济事务部要求安世先行更换由中方首席执行官兼任的首席人力资源官,被安世以"并无 意愿安抚美国"拒绝。 很明显,作为一家中资企业,面对美国的无理制裁,安世半导体当时的选择既正确又合理。荷兰方面因 此干预其运营既是非不分,又助纣为虐。 二是法庭认为,去年荷兰政府和法庭干预安世半导体后,该公司中国分部与荷兰总部分裂,导致生产链 遭受严重影响,需要对此开展调查。荷兰法庭裁决文件中居然写道:"尚不清楚造成此次混乱的责任 方"。这是典型的颠倒黑白、混淆是非。安世半导体分裂和遭遇危机的责任方非常清楚,就是荷兰方面 不负责 ...
智造新消费|“科技年货”热销 “赛博年味”正浓
Ke Ji Ri Bao· 2026-02-14 01:58
Core Insights - The article highlights the growing popularity of "tech products" in Shenzhen, particularly in the Huaqiangbei area, where consumers are drawn to innovative items like AI glasses and robotic pets, reflecting a shift in consumer preferences towards technology-driven gifts [1][2][3] Group 1: Product Trends - The LiberLive C2, a stringless guitar, has gained significant attention since its launch in August 2025, achieving strong sales across various e-commerce platforms and receiving international recognition at the CES in Las Vegas [2] - AI-integrated products, such as AI glasses, have seen a remarkable sales increase, with year-on-year growth of approximately 70% to 80%, making them one of the fastest-growing categories in the tech market [3] Group 2: Market Dynamics - The "tech year-end gifts" trend is supported by a combination of government subsidies, platform discounts, and trade-in programs, leading to significant price reductions and increased consumer orders [3] - Shenzhen is home to over 2,600 AI enterprises, with projections indicating that the core AI industry revenue will reach around 220 billion yuan by 2025, positioning the city as a leader in the national AI sector [2]
世界首创,交直流混联工程用上“智能电力路由器”
Ke Ji Ri Bao· 2026-02-14 01:44
Core Insights - The Jiangsu Yangzhou to Zhenjiang ±200 kV DC transmission project has been completed and put into operation, marking a significant advancement in China's high-end power equipment sector [1][2] - This project utilizes the innovative multi-source commutation DC transmission technology, which integrates DC transmission, reactive power compensation, and filtering functions, addressing traditional DC transmission limitations [1] - The project enhances the cross-river transmission capacity by three times without the need for new infrastructure, demonstrating the effectiveness of technological upgrades [1] Technical Highlights - The project features three main technological innovations: 1. The hybrid AC-DC connection allows for faster and longer-distance electricity transmission 2. Power mutual assistance enables the two power grids to support each other 3. Reactive power regulation stabilizes voltage and reduces energy waste [1] - The SLCC technology acts as an "automatic voltage stabilizer," making it particularly suitable for integrating variable renewable energy sources like wind and solar [2] Environmental Impact - The project is expected to deliver over 6 billion kWh of electricity annually, equivalent to the annual consumption of approximately 2 million households, with over 30% of this being renewable energy [2] - It is projected to reduce carbon dioxide emissions by about 1.6 million tons each year [2] Future Developments - During the 14th Five-Year Plan period, Jiangsu's installed capacity for renewable energy is expected to exceed 172 million kW - The company plans to construct the Yangzhou-Zhenjiang DC transmission phase three project, further enhancing the "north-to-south" transmission capacity by an additional 10 million kW, contributing to a mixed AC-DC grid structure in the province [2]
荷兰公布安世半导体案裁决结果,中方回应!
Ke Ji Ri Bao· 2026-02-13 14:42
Core Viewpoint - The Chinese side emphasizes the importance of restoring stability in the global semiconductor supply chain, which is a common interest for the international industry, including both China and the Netherlands [1]. Group 1 - The Dutch court has announced a decision regarding Nexperia, indicating an investigation into the company's alleged mismanagement [1]. - The Chinese government hopes that the Dutch side will take steps to facilitate constructive negotiations between the companies involved to resolve internal disputes [1].
河南正阳:鹏辉能源21亿二期项目签约
Ke Ji Ri Bao· 2026-02-13 13:20
Group 1 - The core point of the article highlights the signing of a contract for a 120Ah battery cell production project between Penghui Energy and Zhengyang County, which signifies a significant investment and job creation in the region [1] - The total investment for the project is 2.1 billion yuan, covering an area of 120,000 square meters, with an annual production capacity of 13.5 GWh and an expected annual output value of 5 billion yuan, creating approximately 900 new jobs [1] - The first phase of the project, which commenced on January 10, has a total investment of 1 billion yuan, with a daily production capacity of 30,000 small power batteries and 500,000 supercapacitor lithium-ion batteries, leading to an annual production capacity of 1.5 to 2 GWh and an expected annual output value of 1 billion yuan, directly providing 200 jobs [1] Group 2 - The project is noted for its fully automated production line efficiency of 25 ppm, which is considered leading in the domestic industry [5] - The establishment of this project fills a gap in high-end lithium battery production in Zhengyang County, marking the first time this traditional agricultural county has developed a core in the new energy industry [5] - The project is seen as a strategic move for Penghui Energy to seize a competitive advantage while also supporting the local economy and facilitating the transformation of Zhengyang County into a new energy hub [5]