作为硅光子集成芯片中基本无源器件的硅基光波导是进行光信号传输的通道,其具有良好的性能,且与CMOS(Complementary Metal Oxide Semiconductor)工艺相兼容因而得到广泛应用。用于电信和数据中心的硅光子集成电路已逐步走向商业化。近年...作为硅光子集成芯片中基本无源器件的硅基光波导是进行光信号传输的通道,其具有良好的性能,且与CMOS(Complementary Metal Oxide Semiconductor)工艺相兼容因而得到广泛应用。用于电信和数据中心的硅光子集成电路已逐步走向商业化。近年来,中红外波段在自由空间通信、传感以及环境监测等领域的潜在应用受到研究者们的广泛关注。文中分析了中红外硅基光波导的研究现状,归纳了SOI(Silicon on Insulator)、GOSI(Ge-on-SOI)、SOS(Si on Sapphire)、GOS(Ge-on-Si)、SGOS(SiGe-on-Si)、SON(Si-on Si_(3)N_(4))、GON(Ge-on Si_(3)N_(4))等波导材料平台和SOPS(Si on Porous Si)、Undercut、Pedestal、Freestanding、Suspended、LOCOS(Local Oxidation of Silicon)以及等离子体结构等制造工艺平台的研究成果。迄今为止,多数单晶硅在MIR(Mid-Infrared)平台的传播损耗大约在0.7~3.0 dB·cm^(-1)。文中讨论并对比了不同类型波导的应用前景,为中红外硅基光波导的研发、应用和商业化提供了参考。展开更多
水下目标探测效能评估中,水下目标分布概率及路径假设与实际任务场景和目标运动规律匹配程度不高。为此,文章对不同作战场景下目标的三维分布规律进行研究,基于多约束条件的水下目标水平分布概率模型和基于规则及快速拓展随机数算法(Rap...水下目标探测效能评估中,水下目标分布概率及路径假设与实际任务场景和目标运动规律匹配程度不高。为此,文章对不同作战场景下目标的三维分布规律进行研究,基于多约束条件的水下目标水平分布概率模型和基于规则及快速拓展随机数算法(Rapidly-exploring Random Trees,RRT)的水下目标避碰模型,与简化的水下目标垂直分布概率模型共同构建了水下目标实时三维分布概率模型,通过仿真给出目标在任务执行过程中的实时位置散布概率和可能路径。文中给出的仿真结果与理论解析值接近,方法可用于自动航路规划和航路推演评估。展开更多
本文基于SMIC 28 nm CMOS工艺设计了一款应用于超宽带协议的具有带外噪声抑制功能的全集成低噪声放大器(Low Noise Amplifier,LNA),并提出了一种新型的LC串并联两级滤波结构.通过利用滤波器极点补偿LNA带内增益的设计方法,合理设计滤波...本文基于SMIC 28 nm CMOS工艺设计了一款应用于超宽带协议的具有带外噪声抑制功能的全集成低噪声放大器(Low Noise Amplifier,LNA),并提出了一种新型的LC串并联两级滤波结构.通过利用滤波器极点补偿LNA带内增益的设计方法,合理设计滤波负载等效电路的极点,使其略高于零点频率,在保证了LNA通带增益和噪声的情况下提高了滤波深度.对所设计的LNA进行了EMX建模及仿真验证.结果表明,该LNA在6.5~10 GHz的工作频带内,S_(21)高达21.17~25.28 d B,S_(11)小于-10.58 d B;S_(22)小于-11.20 d B,带内噪声系数仅为2.14~2.51 d B;带阻滤波器在5.8 GHz处可提供-35.45 d B的噪声抑制;在0.9 V供电电压下,LNA的静态功耗仅为9.36 m W.展开更多
文章基于协同理论,深入探讨高职教育产教融合机制的内涵、特征及其优化策略。通过理论研究、案例分析、问卷调查和访谈等多种研究方法,全面分析了当前高职教育产教融合的现状,提出了针对不同类型高职院校和不同专业特点的优化策略。文...文章基于协同理论,深入探讨高职教育产教融合机制的内涵、特征及其优化策略。通过理论研究、案例分析、问卷调查和访谈等多种研究方法,全面分析了当前高职教育产教融合的现状,提出了针对不同类型高职院校和不同专业特点的优化策略。文章还关注新技术、新产业、新业态的发展对高职教育产教融合的新要求,并提出了利用新技术、新模式推动产教融合深化发展的具体建议。This article is based on the theory of collaboration, and explores in depth the connotation, characteristics, and optimization strategies of the integration mechanism of industry and education in higher vocational education. Through various research methods, such as theoretical research, case analysis, questionnaire surveys, and interviews, a comprehensive analysis was conducted on the current situation of industry education integration in higher vocational education, and optimization strategies were proposed for different types of higher vocational colleges and different professional characteristics. This article also focuses on the new requirements of the development of new technologies, industries, and formats for the integration of industry and education in higher vocational education, and proposes specific suggestions for using new technologies and models to promote the deepening development of industry education integration.展开更多
随着经济的发展和社会需求的变化,技能型社会逐渐成为现代社会发展的重要方向。在这一背景下,1 + X证书制度作为技能型人才培养的重要途径之一,其有效性和适应性受到广泛关注。文章将探讨1 + X证书制度在技能型社会建设中的作用及其提...随着经济的发展和社会需求的变化,技能型社会逐渐成为现代社会发展的重要方向。在这一背景下,1 + X证书制度作为技能型人才培养的重要途径之一,其有效性和适应性受到广泛关注。文章将探讨1 + X证书制度在技能型社会建设中的作用及其提升路径,分析现状、存在问题以及未来发展方向,以期为政策制定者和教育实践者提供参考。With the development of the economy and changes in social demands, a skill based society has gradually become an important direction for the development of modern society. In this context, the 1 + X certificate system, as one of the important ways to cultivate skilled talents, has received widespread attention for its effectiveness and adaptability. This article will explore the role and improvement path of the 1 + X certificate system in the construction of a skilled society, analyze the current situation, existing problems, and future development directions, in order to provide reference for policy makers and education practitioners.展开更多
文摘作为硅光子集成芯片中基本无源器件的硅基光波导是进行光信号传输的通道,其具有良好的性能,且与CMOS(Complementary Metal Oxide Semiconductor)工艺相兼容因而得到广泛应用。用于电信和数据中心的硅光子集成电路已逐步走向商业化。近年来,中红外波段在自由空间通信、传感以及环境监测等领域的潜在应用受到研究者们的广泛关注。文中分析了中红外硅基光波导的研究现状,归纳了SOI(Silicon on Insulator)、GOSI(Ge-on-SOI)、SOS(Si on Sapphire)、GOS(Ge-on-Si)、SGOS(SiGe-on-Si)、SON(Si-on Si_(3)N_(4))、GON(Ge-on Si_(3)N_(4))等波导材料平台和SOPS(Si on Porous Si)、Undercut、Pedestal、Freestanding、Suspended、LOCOS(Local Oxidation of Silicon)以及等离子体结构等制造工艺平台的研究成果。迄今为止,多数单晶硅在MIR(Mid-Infrared)平台的传播损耗大约在0.7~3.0 dB·cm^(-1)。文中讨论并对比了不同类型波导的应用前景,为中红外硅基光波导的研发、应用和商业化提供了参考。
文摘水下目标探测效能评估中,水下目标分布概率及路径假设与实际任务场景和目标运动规律匹配程度不高。为此,文章对不同作战场景下目标的三维分布规律进行研究,基于多约束条件的水下目标水平分布概率模型和基于规则及快速拓展随机数算法(Rapidly-exploring Random Trees,RRT)的水下目标避碰模型,与简化的水下目标垂直分布概率模型共同构建了水下目标实时三维分布概率模型,通过仿真给出目标在任务执行过程中的实时位置散布概率和可能路径。文中给出的仿真结果与理论解析值接近,方法可用于自动航路规划和航路推演评估。
文摘本文基于SMIC 28 nm CMOS工艺设计了一款应用于超宽带协议的具有带外噪声抑制功能的全集成低噪声放大器(Low Noise Amplifier,LNA),并提出了一种新型的LC串并联两级滤波结构.通过利用滤波器极点补偿LNA带内增益的设计方法,合理设计滤波负载等效电路的极点,使其略高于零点频率,在保证了LNA通带增益和噪声的情况下提高了滤波深度.对所设计的LNA进行了EMX建模及仿真验证.结果表明,该LNA在6.5~10 GHz的工作频带内,S_(21)高达21.17~25.28 d B,S_(11)小于-10.58 d B;S_(22)小于-11.20 d B,带内噪声系数仅为2.14~2.51 d B;带阻滤波器在5.8 GHz处可提供-35.45 d B的噪声抑制;在0.9 V供电电压下,LNA的静态功耗仅为9.36 m W.
文摘文章基于协同理论,深入探讨高职教育产教融合机制的内涵、特征及其优化策略。通过理论研究、案例分析、问卷调查和访谈等多种研究方法,全面分析了当前高职教育产教融合的现状,提出了针对不同类型高职院校和不同专业特点的优化策略。文章还关注新技术、新产业、新业态的发展对高职教育产教融合的新要求,并提出了利用新技术、新模式推动产教融合深化发展的具体建议。This article is based on the theory of collaboration, and explores in depth the connotation, characteristics, and optimization strategies of the integration mechanism of industry and education in higher vocational education. Through various research methods, such as theoretical research, case analysis, questionnaire surveys, and interviews, a comprehensive analysis was conducted on the current situation of industry education integration in higher vocational education, and optimization strategies were proposed for different types of higher vocational colleges and different professional characteristics. This article also focuses on the new requirements of the development of new technologies, industries, and formats for the integration of industry and education in higher vocational education, and proposes specific suggestions for using new technologies and models to promote the deepening development of industry education integration.
文摘随着经济的发展和社会需求的变化,技能型社会逐渐成为现代社会发展的重要方向。在这一背景下,1 + X证书制度作为技能型人才培养的重要途径之一,其有效性和适应性受到广泛关注。文章将探讨1 + X证书制度在技能型社会建设中的作用及其提升路径,分析现状、存在问题以及未来发展方向,以期为政策制定者和教育实践者提供参考。With the development of the economy and changes in social demands, a skill based society has gradually become an important direction for the development of modern society. In this context, the 1 + X certificate system, as one of the important ways to cultivate skilled talents, has received widespread attention for its effectiveness and adaptability. This article will explore the role and improvement path of the 1 + X certificate system in the construction of a skilled society, analyze the current situation, existing problems, and future development directions, in order to provide reference for policy makers and education practitioners.