摘要：数值模拟的方法已经被用于漏斗胸及漏斗胸合并脊柱侧弯微创矫形过程的研究,但是目前尚缺少实验验证.受伦理限制,目前还无法进行在体模型和离体模型的电测实验,虽然可以用高分子材料制作人工胸廓模型进行电测实验,但是在模型材料的筛选,模型的制备和胸廓模型装配方面还面临许多困难.本文采用新鲜的羊胸廓模型进行电测实验,通过对羊胸廓的胸骨中下段沿矢状面施加40 mm的位移,获得了动物胸廓模型在生理载荷作用下肋骨及肋软骨的应变分布规律.文中结果为了解胸廓在生理载荷作用下的变形特点提供了实验数据,也为验证数值模拟结果提供了重要的实验数据.

摘要：在数字化运营的背景下,开展基于大数据的楼宇接入段资源分析,能够提升接入网资源利用效率,促进楼宇增量业务接入的建设交付和成本节约。基于号线系统的数据,对运营商省分单体建筑所关联的设备,进行ONU/OBD/OLT设备逻辑光路分析,同时在系统平台中导出逻辑光路的明细数据并进行GIS展现,为业务开通或网络优化工作提供数据参考。

摘要：针对原有系统无法真实展示工程地理环境的问题,研究基于数字孪生的输变电线路三维数字化系统的设计方法。在硬件设计中,布局输变电线路网络架构,嵌入OPC-UA服务器,绑定传感器节点位置。在软件设计中,建立输变电线路空间数据库,构建数字孪生三维虚拟模型,完成三维数字化系统的设计。以复杂地区输变电线路建设工程为对象进行实验,实验结果表明:选择多个场景中的位置线段进行距离测量时,两组传统方法对实际距离测量存在误差,生成的地形图像发生形变,而本文系统可完全还原输变电线段距离,具有实际应用效果。

摘要：A 325-MHz superconducting half-wave resonator has been designed with β = 0.51. Three shapes of the inner conductors(race track, ring shape and elliptical shape) were optimized to decrease the peak electromagnetic fields and minimize the dissipated RF power on the cavity walls. In order to suppress the operation frequency shift caused by fluctuations of the helium pressure and maximize the tuning ranges, the frequency shifts and mechanical properties were studied on the electric and magnetic areas. The helium vessel was designed to keep the mechanical structure as robust as possible.

摘要：随着城市地质、环境地质等工程勘察的需求不断扩大，能够在城市道路快速响应的钻机需求也随之增加。目前国内此类施工中使用占比较大的设备多以撬装立轴钻机或轻卡装载汽车钻为主，这类设备很难满足当前和未来城市地质勘察钻探施工的高效钻进以及数字智能化运行等方面的需求。在进行充分市场调研的前提下，提出了一种基于轻型皮卡装载的数字化工勘钻机。该钻机采用全液压模块化设计，通过搭载不同的钻进模块，实现静力触探、标准贯入、振动直推等功能，同时可满足城市工程勘察的快速运移、钻探取样、数字化显示等要求，可为透明城市及数字化工程勘察提供装备支撑。

摘要：针对广告编辑手法多样导致的广告单元分割较难的问题,提出了融合音频和文本信息的广告单元分割算法。对广告中的音频数据进行高斯混合模型建模,基于分割熵实现音频跳变点检测。沿着时间轴,结合音频跳变点和基于小波变换和支持向量机的文本检测实现对广告单元切换点的第一轮检测。基于时间间隔进行广告单元切换点的第二轮检测。实验证实该算法对广告单元中音频跳变点检测的查全率和查准率高于80%,对广告单元分割的查全率和查准率约为70%。

摘要：公益广告的本质是有利于社会发展、符合大众社会利益的广告,兼具着引导社会公德与思想教育的重要作用。公益广告的自身性质与思政教育有着紧密的思想关联,都是针对大学生思想价值的正向引导,把“立德树人”作为教育的根本宗旨,在学生的专业学习过程中融入社会主义核心价值观和中国传统美德,同时公益广告的拓展性、艺术性、创造性,将抽象的思想道德教育可视化,加深大学生的理解和解读。

摘要：具身智能强调大脑、身体及环境三者的相互作用,旨在基于机器与物理世界的交互,创建软硬件结合、可自主学习进化的智能体.当前,机器学习、机器人学、认知科学等多学科技术的快速发展极大地推动了具身智能的研究与应用.已有的具身智能文献更多从技术和方法分类的角度入手,本文以具身智能在研究和应用过程中面临的关键挑战为角度切入,分析具身智能研究的一般性框架,围绕具身感知与执行、具身学习与进化两个方面提出具体的研究思路,并针对其中涉及的关键问题详细梳理相关技术及研究进展.此外,以移动机器人、仿生机器人、平行机器人三方面应用为例,介绍具身智能在感知与理解、控制与决策、交互与学习等方面给实际机器人系统设计带来的启发.最后,对具身智能的发展前景进行展望,探索虚实融合数据智能、基础模型与基础智能、数字孪生与平行智能在其中的重要作用和应用潜力,希望为相关领域学者和从业人员提供新的启示和思路.论文相关项目详见https://***/BUCT-IUSRC/Survey__EmbodiedAI.

摘要：A systemic investigation was done on the chemistry and crystal structure of boundary phases in sintered Ce9Nd21FebalB1 （wt%） magnets. Ce2Fe14B is believed to be more soluble in the rare-earth （RE）-rich liquid phase during the sintering process. Thus, the grain size and oxygen content were controlled via low-temperature sintering, resulting in high coercivity and maximum energy products. In addition, Ce formed massive agglomerations at the triple-point junctions, as confirmed by elemental mapping results. Transmission electron micros- copy （TEM） images indicated the presence of （Ce,Nd）Ox phases at grain boundaries. By controlling the composition and optimizing the preparation process, we successfully obtained Ce9Nd21FebalBx sintered magnets; the prepared magnets exhibited a residual induction, coerciv- ity, and energy product of 1.353 T, 759 kA/m, and 342 kJ/m3, respectively.

摘要：The radial migration of cortical pyramidal neurons(PNs)during corticogenesis is necessary for establishing a multilayered cerebral *** migration defects are considered a critical etiology of neurodevelopmental disorders,including autism spectrum disorders(ASDs),schizophrenia,epilepsy,and intellectual disability(ID).TRIO is a high-risk candidate gene for ASDs and ***,its role in embryonic radial migration and the etiology of ASDs and ID are not fully *** this study,we found that the in vivo conditional knockout or in utero knockout of Trio in excitatory precursors in the neocortex caused aberrant polarity and halted the migration of late-born *** investigation of the underlying mechanism revealed that the interaction of the Trio N-terminal SH3 domain with Myosin X mediated the adherence of migrating neurons to radial glial fibers through regulating the membrane location of neuronal cadherin(N-cadherin).Also,independent or synergistic overexpression of RAC1 and RHOA showed different phenotypic recoveries of the abnormal neuronal migration by affecting the morphological transition and/or the glial fiber-dependent *** together,our findings clarify a novel mechanism of Trio in regulating N-cadherin cell surface expression via the interaction of Myosin X with its N-terminal SH3 *** results suggest the vital roles of the guanine nucleotide exchange factor 1(GEF1)and GEF2 domains in regulating radial migration by activating their Rho GTPase effectors in both distinct and cooperative manners,which might be associated with the abnormal phenotypes in neurodevelopmental disorders.