Ke Ji Ri Bao
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大连港跃升全球集装箱港口绩效指数第四
Ke Ji Ri Bao· 2025-09-30 08:40
Group 1 - The core report, the Container Port Performance Index (CPPI) 2020-2024, indicates that seven Chinese ports are ranked among the top ten globally in 2024, with Dalian Port rising to fourth place [1][4] - The CPPI covers 403 ports worldwide, utilizing data from over 175,000 ship calls and 247 million container operations, assessing ports based on turnaround time, cargo handling, infrastructure quality, and digital integration [4] - Dalian Port's ranking improved from 42nd to 14th and then to 4th over three years, attributed to advancements in automation, IT applications, and data sharing among port and logistics entities [4] Group 2 - Dalian Port has expanded its service network, adding direct shipping routes to key regions including Europe and South America, with a total of 106 container shipping routes covering over 300 ports in 160 countries [5] - The port has maintained rapid growth in container throughput for four consecutive years, enhancing its status as a foreign trade hub and supporting high-level openness for Dalian [5] - The "Dayaowan Smart Port 2.0" project was completed in December 2022, introducing innovative concepts such as "smart operations," "intelligent management," and "eco-friendly environments" to enhance port efficiency [5]
新型量子纠错码开发成功,性能非常接近哈希界限
Ke Ji Ri Bao· 2025-09-30 07:55
Core Insights - The Tokyo University of Science team has made significant advancements in quantum error correction technology by developing an efficient and scalable quantum Low-Density Parity-Check (LDPC) error-correcting code that maintains high stability in systems with hundreds of thousands of logical qubits, approaching theoretical limits [1][2] - This breakthrough provides crucial technical support for achieving large-scale fault-tolerant quantum computing, potentially accelerating practical applications in quantum chemistry, cryptanalysis, and complex optimization [1] Group 1 - The current quantum computers can manipulate dozens of qubits, but solving real-world problems often requires millions of stable and reliable logical qubits [1] - Existing quantum error correction methods generally suffer from high resource consumption and low efficiency, requiring many physical qubits to encode a small number of logical qubits, which severely limits system scalability [1] - Many existing error correction codes have low coding rates and limited performance improvement potential, with significant gaps remaining from the theoretical optimal error correction limit known as the hashing bound [1] Group 2 - The team successfully overcame these challenges by proposing a new construction method that designs prototype LDPC codes with excellent error correction characteristics and introduces affine arrangement-based techniques to enhance code structure diversity [2] - Unlike traditional LDPC codes defined over binary finite fields, the new approach uses non-binary finite fields, allowing each encoding unit to carry more information and thus improving overall error correction capability [2] - The team transformed these prototype codes into a CSS-type quantum error correction code and developed an efficient joint decoding strategy that can simultaneously handle bit-flip and phase-flip errors, unlike most previous methods that could only correct one type at a time [2] Group 3 - Through large-scale numerical simulations, the new error correction code achieves a bit error rate of 10^-4 in systems with hundreds of thousands of logical qubits, with performance very close to the hashing bound [2] - Importantly, the computational complexity required for decoding is proportional to the number of physical qubits, meaning that as system size increases, the resource overhead grows linearly, indicating good engineering feasibility [2]
基因编辑进入“大规模重排时代”,桥重组酶:改写生命天书的“神笔”
Ke Ji Ri Bao· 2025-09-30 07:55
Core Insights - A revolutionary shift in gene editing technology is occurring, moving from simple corrections to comprehensive genomic restructuring, as demonstrated by the latest breakthroughs from the Arc Institute [1][2][3] Gene Editing Evolution - Traditional gene editing tools like CRISPR-Cas9 have been effective for precise corrections but struggle with complex diseases caused by large genomic rearrangements [2][3] - The limitations of existing technologies include their inability to efficiently handle large segments of DNA and the potential for off-target effects and safety risks [3] New Technology: Bridge Recombinase - The newly developed bridge recombinase technology allows for programmable insertions, deletions, and flips of genomic regions up to millions of base pairs, enabling large-scale genomic rearrangements [3][4] - This technology utilizes bridge RNA, which can simultaneously bind to two different DNA sites, facilitating complex genomic operations that were previously challenging with CRISPR [4] Clinical Applications and Potential - Initial experiments using bridge recombinase show promise in treating Friedrich's ataxia by successfully removing over 80% of the expanded GAA sequence responsible for the disease [5] - The technology simplifies the delivery process by requiring only RNA, reducing treatment complexity and risk, and has demonstrated broad applicability in existing therapies for conditions like sickle cell anemia [5] Future Prospects - The bridge recombinase technology holds potential for treating various genetic disorders, cancers, and applications in synthetic biology and agriculture [6] - Ongoing efforts are focused on applying this technology to stem cells and immune cells to develop more powerful variants for larger genomic segments [6]
内置免疫系统的微型“肺芯片”问世,能像真实器官一样主动防御病原体
Ke Ji Ri Bao· 2025-09-30 01:49
Core Insights - The collaboration between Georgia Institute of Technology and Vanderbilt University has led to the development of the world's first micro "lung chip" with an integrated immune system, which can actively defend against pathogens and has the potential to revolutionize disease research and replace animal testing [1][3] Group 1: Technology and Innovation - The new lung chip is designed to simulate lung functions and includes a functional immune system, allowing it to realistically mimic the lung's response to infections, inflammation, and self-repair processes [3] - Previous attempts to integrate an immune system into organ chips faced technical challenges, such as the short lifespan of immune cells and difficulties in simulating their circulation and interaction within the body. The research team has optimized technology to achieve long-term survival and defense functionality of immune cells within the chip [3] Group 2: Research Applications - The lung chip has demonstrated immune responses similar to those in humans during experiments with influenza virus, showcasing its ability to accurately replicate real pathological processes [3] - This innovation opens new avenues for preclinical research, allowing for a deeper understanding of the interactions between immune responses and viral infections, as well as the evaluation of antiviral drug efficacy [3] Group 3: Future Prospects - The new lung chip can be utilized to study diseases such as asthma, cystic fibrosis, lung cancer, and tuberculosis. Future plans include integrating immune organs to simulate the collaboration between the lungs and the systemic immune system [4] - The long-term goal is to achieve personalized medicine by constructing chips using patients' own cells to predict the most effective treatment strategies [4]
斜井开挖钻护一体化装备下线
Ke Ji Ri Bao· 2025-09-30 01:39
Core Viewpoint - The integrated drilling and support equipment developed by Guangzhou SANYO and China Gezhouba Group marks a significant advancement in mechanized and intelligent construction for inclined tunnels, potentially revolutionizing underground engineering construction methods [1][3]. Group 1: Equipment Features - The equipment is designed with the principles of "integrated design, intelligent control, and high reliability," achieving three core breakthroughs: multi-functional integrated operations, intelligent collaborative control, and comprehensive safety protection [2]. - It integrates drilling arms, mucking arms, spraying manipulators, and high-altitude work platforms, significantly improving process efficiency and overall construction speed [2]. - The intelligent control system allows for unified scheduling and precise control of multiple devices, facilitating the transition from traditional manual operations to "intelligent and unmanned" construction [2]. Group 2: Industry Impact - The equipment is applicable not only to hydropower facilities and pumped storage power stations but also to mining tunnels and transportation tunnels, addressing major needs in China's energy infrastructure construction [3]. - Its successful development is expected to solve specific construction challenges, enhance construction efficiency, reduce safety risks, and lower labor costs, providing critical technical support for large engineering projects [3]. - The innovation is anticipated to drive upgrades in the engineering machinery industry chain and lead technological development within the sector [3].
加快我国重大科技基础设施高质量发展
Ke Ji Ri Bao· 2025-09-30 01:30
Core Viewpoint - Major scientific infrastructure is crucial for supporting original innovation and achieving high-level technological self-reliance in the context of intensified global technological competition [1][4]. Group 1: Development and Current Status - China's major scientific infrastructure has developed into a world-class system through national planning and a phased approach, with facilities like the Shanghai Synchrotron Radiation Facility and the Spallation Neutron Source leading internationally [2][3]. - The current trend is towards systematization, digitalization, and internationalization, integrating technologies like 5G and AI to enhance operational efficiency and facilitate global scientific collaboration [2][3]. Group 2: Strategic Importance - Major scientific infrastructure plays a core role in basic research and industrial applications, providing essential support for fields such as quantum materials and AI training, thereby enhancing the innovation chain from research to application [3][4]. - It serves as a key link in optimizing resource allocation for regional coordinated development, fostering innovation ecosystems across different regions of China [3][4]. Group 3: Challenges and Structural Issues - Despite advancements, China's major scientific infrastructure faces structural challenges, including a tendency to prioritize construction over research and issues with resource allocation and collaboration [6][7]. - There is a need for a systematic approach to overcome these challenges and fully activate the strategic potential of major scientific infrastructure [6][7]. Group 4: Future Directions and Recommendations - To achieve the goal of becoming a technological powerhouse by 2035, major scientific infrastructure must transition from scale expansion to quality enhancement, focusing on strategic areas like quantum technology and deep space exploration [7][8]. - Recommendations include strengthening top-level design, enhancing collaborative mechanisms, innovating funding models, and restructuring talent cultivation systems to better support the infrastructure's capabilities [7][8].
强化科技人才引擎 激活创新发展动能
Ke Ji Ri Bao· 2025-09-30 01:30
Core Insights - Talent is the foundation of innovation, and during the "14th Five-Year Plan" period, China's technological achievements have significantly improved, with the national comprehensive innovation capability ranking rising from 14th in 2020 to 10th in 2024 [1] Group 1: Achievements in Talent Development - The scale of the scientific and technological talent workforce has steadily expanded, with R&D personnel increasing from 7.553 million in 2020 to 10.225 million in 2023, a growth of 35.4%, maintaining the world's largest number [2] - The structure of the scientific and technological talent workforce has been optimized, with over 80% of participants in national key R&D programs being under 45 years old, and significant growth in talent in central and western regions [2] - The innovation capability of scientific and technological talent has continuously enhanced, with the number of high-citation scientists in mainland China increasing from 770 in 2020 to 1,405 in 2024, representing a global share increase from 12.1% to 20.4% [3] Group 2: System and Mechanism Improvements - The development system and mechanism for scientific and technological talent have become more robust, with ongoing reforms in talent evaluation and compensation systems, focusing on innovation capability and contributions [4] - The legal framework for talent development has been strengthened, with revisions to laws enhancing the legal basis for talent construction and promoting a respectful environment for knowledge and innovation [5] Group 3: Future Focus Areas - To address challenges in talent development, emphasis will be placed on improving talent cultivation capabilities aligned with innovation needs, optimizing educational structures, and fostering interdisciplinary skills [6][7] - A systematic support framework for scientific and technological talent will be established, ensuring stable and continuous policy and funding support, particularly for young talent [7] - Continuous improvement of talent evaluation and incentive mechanisms will be pursued, focusing on innovation quality and contributions, while reducing non-research burdens on researchers [8]
超重力实验装置核心设备启动
Ke Ji Ri Bao· 2025-09-30 01:30
Core Insights - The CHIEF facility, a major national scientific infrastructure, has launched its first centrifuge in Hangzhou, Zhejiang Province, which can simulate artificial gravity fields hundreds to thousands of times that of Earth's gravity [1][2] - This facility aims to support research in disaster prevention, resource development, underground space utilization, new material development, and geological processes [1] Group 1 - The CHIEF facility includes three main centrifuges: CHIEF1300, CHIEF1500, and CHIEF1900, along with 18 onboard devices across six experimental chambers [1][2] - CHIEF1300 has a capacity of 1300 g·t and is currently the largest centrifuge globally, achieving a maximum centrifugal acceleration of 300 g [2] - The facility is designed to simulate geological and environmental processes over extensive time scales, allowing for the study of phenomena that would typically take decades or centuries [2] Group 2 - The CHIEF project is led by Zhejiang University and aims to create an open and collaborative international research platform [2] - The facility is expected to enhance global scientific research and innovation by facilitating cooperation with top research teams worldwide [2] - The construction of CHIEF1500 and CHIEF1900 is ongoing, with completion expected by the end of 2025 [2]
【科技日报】“AI+遥感”精准量化北方干旱流域饲草种植潜力
Ke Ji Ri Bao· 2025-09-30 01:20
"这项研究的创新之处在于,将饲草种植决策转化为一个多维度的空间优化问题,同时权衡'水资源消 耗、土壤固碳效益和饲草产能产出'。"论文通讯作者、空天院研究员王树东介绍,通过这一技术,系统 能自动生成"一张图",直观展示哪些地块最适合种植饲草、投入产出效益最高,极大方便了管理部门进 行精准决策和资源调配。 王树东表示,该技术体系成本低、可推广性强,不仅适用于黄河中游地区,未来也有望在内蒙古—宁夏 生态过渡带、河西走廊等典型干旱区落地,并对全球其他面临类似生态与农业挑战的地区,具有重要的 参考价值。 记者29日从中国科学院空天信息创新研究院(以下简称"空天院")获悉,该院研究团队成功研发出一套 融合人工智能与遥感技术的新方法,在我国北方干旱半干旱流域,首次实现了公里尺度上的"最优饲草 种植带"精准识别,为黄河流域生态保护与农牧业高质量发展提供了科学依据。相关成果发表于《水研 究》。 我国北方干旱半干旱地区,长期面临水资源短缺与保障粮草安全的双重压力。如何在保护生态的同时, 科学提升土地产能,一直是亟待解决的难题。传统评估方法往往依赖大量地面采样,且多侧重于单一指 标,难以实现精准、高效的区域规划。 为破解这一难题, ...
构建AI时代的科研诚信体系
Ke Ji Ri Bao· 2025-09-30 01:20
人工智能(AI)在广泛赋能科学研究的同时,也催生了"AI洗稿""数据装饰""代笔"等一系列新型科 研诚信问题。如何应对这些新挑战,已成为关乎科学事业健康发展的关键课题。 9月26日,中国科学院学部科技伦理研讨会在北京举行,主题为"人工智能时代的科研诚信",旨在 为应对AI时代的科研诚信挑战建言献策,为完善我国科研诚信体系、推动AI的负责任应用凝聚共识。 自ChatGPT等大型语言模型问世以来,人工智能已广泛应用于知识获取、数据分析和学术写作等领 域,显著提升了学习与研究效率。然而,AI的深度介入也使学术活动的主体构成发生根本性变化。 以"算法参与"为特征的科研模式,导致了贡献界定模糊、研究过程不透明、结果可解释性下降等一 系列新问题。更复杂的是,AI系统可能携带算法偏见,甚至生成虚假或误导性内容,这使研究结果的 可靠性面临严峻挑战。 中国科学院学部科学道德建设委员会主任胡海岩院士在致辞时强调,当前AI检测技术的发展明显 滞后于AI生成技术,传统查重与识别手段效力渐微,致使科研不端行为更具隐蔽性和复杂性。大量因 AI随机生成内容和虚假引文导致的撤稿案例,已引发国际学术界的广泛警惕。 "AI的应用,至少从两个方面 ...