有关马戛尔尼使华的几点思考

文章从马戛尓尼使华事件的话语问题谈起,探讨了18世纪的世界形势,比较了中日印三国所走的不同路径及结果;对马戛尓尼使华事件是殖民陷阱还是历史的良机,乾隆是洞悉其奸还是维护天朝体制,前清是禁传宗教还是禁传西学等问题,文中都给出了自己的思考

Further Discussions on Various Problems Concerning "the State of Xindu was Styled the State of Guangchuan in the Second Year of Emperor Jing"——Doubled as a consultation with Mr. Wang Wentao

对班固与颜师古所处时代及立场加以综合分析,并通过对“广川国“沿革的准确爬梳,得出《汉书.地理志》中关于“景帝二年为广川国“的论断无疑是正确的,而后半句“宣帝甘露三年复故“实应为“甘露四年“。A comprehensive analysis is made of the times and standpoints of Ban Gu and Yan Shigu.Through the exact clarifications of the origin of the state of Guangchuan,it is concluded that the statement of "being styled the state of Guangchuan in the second year of Emperor Jing"is unquestionably correct,whereas the latter half of the sentence "being styled its original name in the third year of Emperor Xuan" should have been "in the fourth year of Emperor Xuan"

Satellite Resource Scheduling Algorithm Based on Pareto Front and Particle Swarm Optimization

针对多空间目标的卫星资源调度问题,设计动态矩阵群编码方法,在此基础上提出一种结合Pareto前沿与粒子群优化(PSO)的卫星资源调度算法。利用P areto前沿保存一组当前最优解引导粒子群进化,扩大搜索范围并避免陷入局部最优,同时得到一组在不同指标上均有优势的差异化解集,便于根据用户偏好和 实时需求选择最优解。实验结果表明,与基于传统整数编码的卫星调度算法相比,该算法能降低粒子群进化过程中试探、判断和调整的时间消耗,并且具有较高的资 源利用率及稳定性。Aiming at the satellite resource scheduling problem of multi-space target,this paper designs Dynamic Matrix Cluster(DMC) encoding method, and proposes a satellite resource scheduling algorithm based on Pareto front and Particle Swarm Optimization (PSO). It uses Pareto front to keep a set of optimal solutions,avoids getting stuck in local optimization, also leads to more optimal solutions diverse in different index optimization priority. Then it selects the optimal solution according to user preferences and real-time requirements. Experimental results indicate that the algorithm can reduce the time consumption of temptation,judgment, and adjustment during particle swarm evolution process, and it has high resource utilization and stability compared with satellite resource schedulling algorithm based on traditional integer encoding

An overview of research development of affective computing and understanding

情感在感知、决策、逻辑推理和社交等一系列智能活动中起到核心作用,是实现人机交互和机器智能的重要元素。近年来,随着多媒体数据爆发式增长及人工智能的快速发展,情感计算与理解引发了广泛关注。情感计算与理解旨在赋予计算机系统识别、理解、表达和适应人的情感的能力来建立和谐人机环境,并使计算机具有更高、更全面的智能。根据输入信号的不同,情感计算与理解包含不同的研究方向。本文全面回顾了多模态情感识别、孤独症情感识别、情感图像内容分析以及面部表情识别等不同情感计算与理解方向在过去几十年的研究进展并对未来的发展趋势进行展望。对于每个研究方向,首先介绍了研究背景、问题定义和研究意义;其次从不同角度分别介绍了国际和国内研究现状,包括情感数据标注、特征提取、学习算法、部分代表性方法的性能比较和分析以及代表性研究团队等;然后对国内外研究进行了系统比较,分析了国内研究的优势和不足;最后讨论了目前研究存在的问题及未来的发展趋势与展望,例如考虑个体情感表达差异问题和用户隐私问题等。</p

基于古地磁与~(230)Th定年的西沙西科1井乐东组生物礁沉积年代的初步研究

生物礁是重要的自然资源,在全球气候变化与碳循环中扮演了重要角色.磁性地层学是建立年代框架的有效手段,但是,由于生物礁沉积物中天然剩磁强度弱,南海地区生物礁的磁性地层学研究尚未很好展开.为此,本文利用西沙群岛西科1井乐东组生物礁沉积样品进行了详细的岩石磁学和磁性地层学研究.结果显示,西沙群岛乐东组记录了布容正极性时、奥杜维尔正极性时和松山负极性时.通过对比已有的钻孔资料,本文认为应基于岩石地层特征这一标准将西沙地区的乐东组埋深予以统一.在此基础上,综合磁性地层与~(230)Th定年结果,本文将乐东组的底界限定在~2.0 Ma.</p

大连极紫外相干光源

先进光源的发展在前沿科学研究中发挥的作用越来越重要。近十年来,飞速发展的自由电子激光技术为科学家们提供了探索未知世界、发现新科学规律和实现技术变革的重要工具。建成的大连极紫外(EUV)相干光源的运行波段为50~150nm,单脉冲能量大于100μJ,且可提供10-12 s和10-13 s量级的超快激光脉冲,是我国第一台自由电子激光用户装置,并且是国际上唯一运行在极紫外波段的自由电子激光用户装置,在世界范围内为用户提供具有高峰值亮度和超短脉冲的极紫外激光。大连EUV相干光源是由国家自然科学基金委资助、由中国科学院大连化学物理研究所和上海应用物理研究所共同承担的重大科学仪器研制项目,目标是打造一个以先进极紫外光源为核心、主要用于能源基础科学研究的光子科学平台

JUNO Sensitivity on Proton Decay p→νˉK+p\to \bar\nu K^+ Searches

The Jiangmen Underground Neutrino Observatory (JUNO) is a large liquid scintillator detector designed to explore many topics in fundamental physics. In this paper, the potential on searching for proton decay in $p\to \bar\nu K^+$ mode with JUNO is investigated.The kaon and its decay particles feature a clear three-fold coincidence signature that results in a high efficiency for identification. Moreover, the excellent energy resolution of JUNO permits to suppress the sizable background caused by other delayed signals. Based on these advantages, the detection efficiency for the proton decay via $p\to \bar\nu K^+$ is 36.9% with a background level of 0.2 events after 10 years of data taking. The estimated sensitivity based on 200 kton-years exposure is $9.6 \times 10^{33}$ years, competitive with the current best limits on the proton lifetime in this channel