Combining practical engineering projects, this article analyzes the design strategies for the reconstruction and expansion of insufficient clearance sections in highway interchanges. This includes an overview of the p...Combining practical engineering projects, this article analyzes the design strategies for the reconstruction and expansion of insufficient clearance sections in highway interchanges. This includes an overview of the project, a comparison of design options for insufficient clearance in interchanges, and the main design strategies for reconstruction and expansion. It is hoped that this analysis can provide a reference for the design of such road reconstruction and expansion projects.展开更多
The Silk Road witnessed the exchange,integration,and innovation of medicine between ancient China and the ancient Middle East.This article outlines a panoramic historical picture of medical interchanges between ancien...The Silk Road witnessed the exchange,integration,and innovation of medicine between ancient China and the ancient Middle East.This article outlines a panoramic historical picture of medical interchanges between ancient China and the ancient Middle East along the Silk Road by multilingual literature research,textual criticism and scientific methods.Through the exchange of medicinal materials,the supplement of prescriptions,the reference of dosage forms,and the absorption of medical concepts,the two major medical systems along the Silk Road have interacted and integrated.Anchored in the political cooperation,sustained by translation network,and promoted by commercial intercourse,this medical dialogue shows the openness and adaptability of traditional medicine.This interchange history provides a historical paradigm for the modernization of traditional medicine,cross-cultural collaboration,and the building of the Silk Road of Health.展开更多
As a critically important transportation infrastructure in China,highways play a significant role in supporting socio-economic development.However,due to the rapid growth of the current socio-economic landscape and th...As a critically important transportation infrastructure in China,highways play a significant role in supporting socio-economic development.However,due to the rapid growth of the current socio-economic landscape and the dramatic increase in the number of cars,many early-built highways have experienced a surge in traffic volume,making it difficult to meet the growing traffic demand.This has led to various issues such as traffic congestion and inefficient operation.Therefore,it is necessary to expand and reconstruct the highway interchanges,effectively optimizing traffic organization design and significantly improving the overall service level of the highway.This article provides a detailed analysis of the principles and key points of traffic organization design for the expansion and reconstruction of highway interchanges.Additionally,it delves into the design scheme for the traffic organization of these interchanges.展开更多
交换不稳定性广泛存在于工程和自然界中,被认为是木星磁盘内径向物质输运的主要机制之一.本文基于理想磁流体力学理论,考虑了木星内磁层基本物理参数(Feng et al.,2025),获得了未考虑局域近似(扰动波长远小于特征长度)条件下的木星内磁...交换不稳定性广泛存在于工程和自然界中,被认为是木星磁盘内径向物质输运的主要机制之一.本文基于理想磁流体力学理论,考虑了木星内磁层基本物理参数(Feng et al.,2025),获得了未考虑局域近似(扰动波长远小于特征长度)条件下的木星内磁层交换不稳定性色散关系和不稳定判据;通过理论分析获得了木星内磁层交换不稳定性的主要增长模式与增长率.分析结果显示,在当前的参数条件下,在木卫一环内侧区域交换模式稳定;在木卫一环外侧存在交换模式不稳定区间,理论给出了不稳定性发生的空间位置.结果还表明,在木卫一环外侧的离心力与密度梯度共同驱动了交换不稳定性,而偶极磁场曲率与熵梯度对交换模式起致稳作用.当环向模数小于10时,交换不稳定性增长率随环向模数增大而增长;当环向模数大于10时,增长率趋于饱和.交换不稳定性增长率随径向模数增大而减小.理论分析获得的主导模式与数值模拟中增长率最大模式的环向模数(环向模数为m=13)接近.与文献Newcomb(1961)和Ferrière等(1999)的理论结果对比显示,本文推导获得的理论结果与Ferrière理论模型的不稳定区域基本一致,但是与Newcomb理论模型给出的木卫一外侧全区域不稳定的结果有差异.上述差异主要是因为Newcomb理论模型采用平板构型,未考虑弯曲磁场曲率制稳的影响.对比分析显示,理论结果获得的交换不稳定性主导模式(环向模数13)的增长率与Ferrière理论模型增长率接近,这说明局域近似理论能较好地描述木星内磁层交换不稳定性增长过程.与数值模拟结果相比,理论分析获得的主导模式增长率偏高约一个量级.展开更多
文摘Combining practical engineering projects, this article analyzes the design strategies for the reconstruction and expansion of insufficient clearance sections in highway interchanges. This includes an overview of the project, a comparison of design options for insufficient clearance in interchanges, and the main design strategies for reconstruction and expansion. It is hoped that this analysis can provide a reference for the design of such road reconstruction and expansion projects.
基金supported by the grant from The MUST Faculty Research Grants(FRG-25-031-FC)and Fundação Macao.
文摘The Silk Road witnessed the exchange,integration,and innovation of medicine between ancient China and the ancient Middle East.This article outlines a panoramic historical picture of medical interchanges between ancient China and the ancient Middle East along the Silk Road by multilingual literature research,textual criticism and scientific methods.Through the exchange of medicinal materials,the supplement of prescriptions,the reference of dosage forms,and the absorption of medical concepts,the two major medical systems along the Silk Road have interacted and integrated.Anchored in the political cooperation,sustained by translation network,and promoted by commercial intercourse,this medical dialogue shows the openness and adaptability of traditional medicine.This interchange history provides a historical paradigm for the modernization of traditional medicine,cross-cultural collaboration,and the building of the Silk Road of Health.
文摘As a critically important transportation infrastructure in China,highways play a significant role in supporting socio-economic development.However,due to the rapid growth of the current socio-economic landscape and the dramatic increase in the number of cars,many early-built highways have experienced a surge in traffic volume,making it difficult to meet the growing traffic demand.This has led to various issues such as traffic congestion and inefficient operation.Therefore,it is necessary to expand and reconstruct the highway interchanges,effectively optimizing traffic organization design and significantly improving the overall service level of the highway.This article provides a detailed analysis of the principles and key points of traffic organization design for the expansion and reconstruction of highway interchanges.Additionally,it delves into the design scheme for the traffic organization of these interchanges.
文摘交换不稳定性广泛存在于工程和自然界中,被认为是木星磁盘内径向物质输运的主要机制之一.本文基于理想磁流体力学理论,考虑了木星内磁层基本物理参数(Feng et al.,2025),获得了未考虑局域近似(扰动波长远小于特征长度)条件下的木星内磁层交换不稳定性色散关系和不稳定判据;通过理论分析获得了木星内磁层交换不稳定性的主要增长模式与增长率.分析结果显示,在当前的参数条件下,在木卫一环内侧区域交换模式稳定;在木卫一环外侧存在交换模式不稳定区间,理论给出了不稳定性发生的空间位置.结果还表明,在木卫一环外侧的离心力与密度梯度共同驱动了交换不稳定性,而偶极磁场曲率与熵梯度对交换模式起致稳作用.当环向模数小于10时,交换不稳定性增长率随环向模数增大而增长;当环向模数大于10时,增长率趋于饱和.交换不稳定性增长率随径向模数增大而减小.理论分析获得的主导模式与数值模拟中增长率最大模式的环向模数(环向模数为m=13)接近.与文献Newcomb(1961)和Ferrière等(1999)的理论结果对比显示,本文推导获得的理论结果与Ferrière理论模型的不稳定区域基本一致,但是与Newcomb理论模型给出的木卫一外侧全区域不稳定的结果有差异.上述差异主要是因为Newcomb理论模型采用平板构型,未考虑弯曲磁场曲率制稳的影响.对比分析显示,理论结果获得的交换不稳定性主导模式(环向模数13)的增长率与Ferrière理论模型增长率接近,这说明局域近似理论能较好地描述木星内磁层交换不稳定性增长过程.与数值模拟结果相比,理论分析获得的主导模式增长率偏高约一个量级.
