Ke Ji Ri Bao
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新方法提升机器人复杂地形自主导航能力
Ke Ji Ri Bao· 2025-10-26 23:47
Core Insights - The research team at Harbin Institute of Technology (Shenzhen) has made significant advancements in robot path planning, particularly for ground mobile robots navigating rugged terrains, ensuring safe, stable, and efficient autonomous navigation [1][2]. Group 1: Research Achievements - The team developed a hierarchical path planning framework that incorporates terrain analysis and configuration stability estimation, overcoming limitations of traditional methods in both map representation efficiency and stability estimation accuracy [1]. - A novel implicit map representation method based on normal distribution transformation was created for global layer planning, balancing detail in terrain representation with large-scale scene coverage [1]. - The research results were published in the academic journal "IEEE Transactions on Robotics" [1]. Group 2: Methodology - An iterative geometric assessment method was introduced for local layer planning, simulating the robot's contact with the ground under gravity to efficiently estimate configuration stability [2]. - The integration of configuration stability estimation into the path search algorithm allows for the generation of safe and smooth local paths, significantly reducing operational risks such as chassis rollover and bottoming out [2]. - The proposed method is applicable in various scenarios, including large outdoor terrains, multi-layered structures, and complex rubble terrains, and has been validated through simulations and real-world experiments [2].
破解水处理难题——“算法驭水”更环保更高效
Ke Ji Ri Bao· 2025-10-26 23:47
Core Insights - The integration of intelligent technology is crucial for the transformation and upgrading of water treatment technology, shifting from single-point innovations to system-level optimizations [1][2] - The water treatment industry faces significant challenges in achieving green and low-carbon transitions, necessitating breakthroughs in low-carbon processes, resource recovery, and efficient energy utilization [2][4] - Artificial intelligence (AI) plays a vital role in enhancing water treatment processes, enabling precise separation of pollutants and optimizing complex operational parameters [3][4] Group 1: Technological Innovations - The next generation of water treatment technology should focus on collaborative breakthroughs in low-carbon processes, resource recovery, and high-efficiency energy utilization, requiring deep integration of intelligent technologies [2][4] - Membrane materials, utilizing physical mechanisms, are widely applied in water purification and wastewater treatment, with advancements in nanofiltration and reverse osmosis systems driven by AI and high-performance computing [3][4] - Catalytic processes combined with biochemical systems can enhance treatment efficiency and sustainability, with AI enabling real-time monitoring and adjustment of operational parameters to reduce energy consumption and greenhouse gas emissions [4] Group 2: Challenges in Smart Water Management - Despite the partial application of AI in water treatment, the industry faces challenges such as outdated infrastructure, poor data quality, and underdeveloped smart platform functionalities [5][6] - The development of effective models for water treatment is hindered by issues related to model engineering, soft-hard coordination, and the need for a decision-making system based on first principles [7][8] - There is a consensus among experts that while challenges exist, the integration of AI and big data with traditional industrial technologies presents significant opportunities for the intelligent and green development of the water treatment sector [8]
俄开发出分析机器翻译错误的应用程序
Ke Ji Ri Bao· 2025-10-26 23:43
Core Insights - The article discusses the development of a new application by scientists at Surgut State University in Russia, aimed at analyzing machine translation errors to improve translation quality [1][2] - The application offers a more comprehensive analysis compared to standard methods, addressing the limitations of existing evaluation metrics [1] Group 1: Application Features - The new tool provides in-depth analysis of translation quality, focusing on vocabulary accuracy, semantic accuracy, and syntactic correctness [1][2] - It integrates multiple evaluation methods into a single automated tool, enhancing the efficiency of the analysis process [1] Group 2: Performance Analysis - The research team analyzed translations from mainstream online translation services and commercial neural networks, generating detailed reports for each translation [1] - Sentences with low scores in any evaluation metric are highlighted for further analysis, indicating areas for improvement [1][2] - While some translation tools performed well in vocabulary matching, all tested systems struggled with translating complex grammatical structures [1]
创新中国开启关键五年——“十五五”科技坐标解读之一
Ke Ji Ri Bao· 2025-10-26 23:42
Core Points - The 20th Central Committee's Fourth Plenary Session approved the "Suggestions on Formulating the 15th Five-Year Plan for National Economic and Social Development," outlining a strategic framework for the next five years [1] - Emphasis on accelerating high-level technological self-reliance and innovation as a key driver for new quality productivity [8] Group 1: Five-Year Plan Significance - The Five-Year Plan serves as a guiding star for long-term economic and social development, playing a crucial role in directing technological innovation and economic growth [2][3] - Experts highlight the importance of the Five-Year Plan in establishing long-term goals and directions for technological innovation, showcasing its continuity and innovative characteristics [2][3] Group 2: Technological Advancements - China's global innovation index ranking has improved from 34th in 2012 to 10th in 2025, with high-level international journal papers and patent applications leading the world for five consecutive years [3] - The "14th Five-Year Plan" has been pivotal in enhancing China's technological capabilities, emphasizing original innovation and strengthening foundational research [4][5] Group 3: Future Outlook - The "15th Five-Year Plan" is seen as a critical period for achieving high-level technological self-reliance and building a strong technological nation, with a focus on artificial intelligence and addressing challenges such as population aging [7][8] - The plan aims to deepen the integration of technological and industrial innovation, fostering new quality productivity [7][8]
超小型半导体器件助芯片稳压滤噪
Ke Ji Ri Bao· 2025-10-26 23:42
低压差线性稳压器(LDO)是芯片内部的"稳压心脏",可为不同功能模块提供干净、稳定的电源。韩国 蔚山科学技术院的研究团队研发出一种超小型混合LDO,有望显著提升先进半导体器件的电源管理效 率。它不仅能更稳定地输出电压,还能滤除噪声,同时占用更少的空间,为人工智能、6G通信等领域 的高性能片上系统提供了新方案。相关成果发表于新一期《IEEE固态电路期刊》。 新型LDO另一个主要优势在于其尺寸。它无需外接电容,采用28纳米CMOS工艺制造,芯片面积仅为 0.032平方毫米,大大节省了空间。团队称,传统混合LDO往往依赖大型电容来平滑数模转换,这限制 了其在高密度片上系统中的应用。新设计通过无缝的数模转换过程,既缩小了体积,又提高了能效。 新型LDO采用了模拟与数字电路融合的混合设计,兼具两者优势,即便在电流需求急剧变化时,也能 确保电压稳定供应。例如,当智能手机启动大型游戏时,能确保稳定的电力输送,并有效阻止电源中不 必要的噪声。 此次研发的与众不同之处在于,采用了先进的数模转换方法与局部接地生成器技术,两者协同工作,实 现了卓越的电压稳定性和噪声抑制。实验数据显示,在电流快速波动达99毫安的情况下,芯片电压纹波 ...
仿生软镜片可像人眼一样自动调焦 推动光驱动材料及下一代可穿戴技术发展
Ke Ji Ri Bao· 2025-10-26 23:41
Core Insights - Researchers at Georgia Institute of Technology have developed a biomimetic soft lens that can automatically adjust its focus based on ambient light intensity, showcasing the potential of light-driven soft materials in adaptive visual systems, autonomous soft robots, smart medical devices, and next-generation wearable technology [1][2] Group 1: Technology and Innovation - The device, named Photothermal Hydrogel Soft Lens (PHySL), is made of a hydrogel embedded with light-absorbing graphene oxide, featuring a micro-lens at its center [1] - When exposed to light, graphene oxide absorbs energy and generates heat, causing the hydrogel to contract and stretch the central lens, altering its curvature to achieve pupil dilation and extended focus [1] - The design overcomes the limitations of traditional biomimetic optical systems that rely on electronic components or rigid motors, enabling true autonomous adjustment [1][2] Group 2: Applications and Performance - PHySL has been integrated into conventional bright-field microscopes, successfully capturing high-resolution images of various biological samples, with image quality comparable to standard microscope objectives [1] - The lens can automatically adjust its focus under natural lighting conditions, making it suitable for dynamic imaging of multi-layer samples [2] - When incorporated into fiber imaging systems, PHySL maintains clear focus on targets despite changes in illumination [2] Group 3: Material Science - This innovation is part of the rapidly advancing field of light-driven soft materials, which convert light energy into mechanical deformation [2] - Key research areas include hydrogels, liquid crystal elastomers, and carbon-based composites, which are used to create micro-robots and artificial muscles [2] - Graphene oxide is highlighted for its broad-spectrum absorption capabilities and efficient photothermal conversion, often used as a "photothermal engine" embedded in polymers or hydrogels for remote, non-contact precision actuation [2]
距地不到二十光年的“超级地球”发现 为寻找外星生命带来新希望
Ke Ji Ri Bao· 2025-10-26 23:41
Core Insights - An international team, including researchers from Pennsylvania State University, has discovered a new exoplanet named GJ 251 c, located less than 20 light-years from Earth, which is classified as a "super-Earth" and lies within the habitable zone of its star, raising hopes for the search for extraterrestrial life [1][2] Group 1 - GJ 251 c orbits a red dwarf star named GJ 251, situated 18.2 light-years away, and has a mass nearly four times that of Earth, suggesting it is likely a rocky planet [1] - The discovery was made possible through 20 years of observational data, focusing on the star's minute "wobble" caused by the gravitational influence of the planet [1] - Another planet, GJ 251 b, was previously discovered in 2020, which has an orbital period of 14 days around the same star [1] Group 2 - The confirmation process for GJ 251 c was complex due to noise from the star's surface activity, requiring advanced data modeling and signal analysis techniques to isolate the planetary signal [2] - Direct imaging of GJ 251 c is currently not possible, but future ground-based telescopes and planned giant space telescopes are expected to analyze its atmosphere for signs of life [2]
AI工具能精准预测交通事故风险
Ke Ji Ri Bao· 2025-10-26 23:41
Core Insights - A generative AI tool named "Traffic Safety Co-Pilot" has been developed by a research team at Johns Hopkins University, capable of accurately predicting traffic accident risks [1] - The tool utilizes large language model technology to analyze over 66,000 traffic accident data points, including road conditions, blood alcohol concentration levels, and satellite and field images [1] - The tool provides not only predictions but also a "confidence score," addressing the common issue of AI decision-making being perceived as a "black box" [1] Traffic Safety and Accident Data - The number of fatalities on Maryland highways increased from 466 in 2013 to 621 in 2023 [1] - Model analysis indicates that accidents caused by drunk driving and speeding are three times more frequent than those caused by other factors [1] Predictive Capabilities - Unlike conventional machine learning techniques that rely solely on historical data, this tool possesses genuine predictive capabilities [1] - It can generate accurate warnings even in the face of new situations not present in the training samples [1] - The tool can continuously optimize its predictive model by incorporating additional data, allowing it to adapt to different regional traffic management needs [1]
全球首款类脑智算体“智者一号”发布
Ke Ji Ri Bao· 2025-10-26 23:38
Core Insights - The "Wisdom One" is the world's first brain-like computing device, integrating supercomputing capabilities into a mini-fridge-sized unit, providing a new path for energy efficiency in traditional supercomputing centers and intelligent computing clusters [1][2] - Developed by two incubated companies under the Guangdong Provincial Institute of Intelligent Science and Technology, "Wisdom One" features 1152 CPU cores, 4.8TB of memory, and 204TB of storage, with noise levels below 45 decibels and power consumption only one-tenth of traditional supercomputing devices [1] - The device's unique intuitive neural network algorithm simulates human brain operations, enabling it to efficiently run various model training and inference tasks, including large models [1][2] Technical Features - "Wisdom One" integrates advanced computing technology in a compact form, achieving high performance with low power consumption and noise [1] - The device maintains a stable temperature below 70 degrees Celsius even under maximum load, showcasing its efficient thermal management [1] - The algorithm allows AI to possess reasoning capabilities, enabling it to learn from minimal data while retaining old skills and processing multiple types of information simultaneously [2] Industry Impact - The launch of "Wisdom One" expands the deployment forms and applicable boundaries of supercomputing, providing critical technological support for a greener, more flexible, and user-friendly future computing system [2]
冷冻电镜如何“跨界”助力芯片光刻取得新突破
Ke Ji Ri Bao· 2025-10-26 23:38
Core Insights - The research team from Peking University has made significant advancements in understanding the microstructure and entanglement behavior of photoresist molecules in liquid environments using cryo-electron tomography, which can guide the development of industrial solutions to reduce lithography defects [1][2]. Group 1: Importance of Lithography - Lithography is a critical step in semiconductor manufacturing, essentially "printing" circuit patterns onto semiconductor wafers like silicon [1]. - The development process of photoresist involves a developer solution that selectively dissolves exposed areas, where the adsorption and entanglement of photoresist molecules are key factors affecting defect formation on the wafer surface, directly impacting chip performance and yield [1]. Group 2: Use of Cryo-Electron Tomography - The research team has introduced cryo-electron tomography to the semiconductor field, designing a sample preparation method closely integrated with the lithography process [2]. - After standard lithography exposure, the developer solution containing photoresist polymers is rapidly frozen to capture the true conformation of the photoresist in solution, allowing for high-resolution three-dimensional reconstruction of the polymer structure and interface distribution [2]. Group 3: Implications for the Industry - The three-dimensional reconstruction revealed that previously believed dispersion of dissolved photoresist polymers is primarily adsorbed at the gas-liquid interface, with the team observing "coagulated entanglements" of the polymers [3]. - The research proposes two effective solutions: suppressing entanglement and capturing at the interface, which successfully eliminated over 99% of pattern defects caused by photoresist residues on 12-inch wafers, demonstrating high reliability and repeatability [3]. - This research highlights the potential of cryo-electron tomography as a powerful tool for analyzing liquid-phase interfacial reactions at the atomic/molecular scale, paving the way for improved lithography precision and yield [3].