Search

介电特性是决定雷达波在物质中传播速度的重要参数. 嫦娥四号测月雷达提供的高垂向分辨率次表层雷达剖面信息有助于加深对月球次表层物质介电特性的理解与认识. 全波形反演法充分利用雷达波场的运动学和动力学信息, 根据雷达波模拟结果与真实数据的差异计算更新参数, 迭代初始介电模型实现对次表层介电剖面的反演. 本文结合嫦娥四号测月雷达数据与时域有限差分方法下均质模型和随机等效介质模型的雷达回波特性, 确定随机等效介质模型能够更好地模拟嫦娥四号着陆区次表层物质的介电特性. 全波形方法反演的介电模型与真实模型在大部分区域的相对介电常数误差小于0.2, 为反演月壤厚度及构建次表层温度模型提供了重要的数据支撑.

Copyright of Journal of Materials Engineering / Cailiao Gongcheng is the property of Journal of Materials Engineering Editorial Office and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Diamond & Abrasives Engineering is the property of Zhengzhou Research Institute for Abrasives & Grinding and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Diamond & Abrasives Engineering is the property of Zhengzhou Research Institute for Abrasives & Grinding and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Journal of Materials Engineering / Cailiao Gongcheng is the property of Journal of Materials Engineering Editorial Office and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Application Research of Computers / Jisuanji Yingyong Yanjiu is the property of Application Research of Computers Edition and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Transactions of the Chinese Society of Agricultural Engineering is the property of Chinese Society of Agricultural Engineering and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

How to focus distributed data and service resources efficiently for urban emergency decision support and rapid response is a vitally important issue that has to be addressed in the process of smart city construction. In this paper, an event-driven focusing service pattern for city information resources is proposed. It triggers the decision process by events, and realizes a seamless integration of requirements and city information resources, providing comprehensive auxiliary decision support in urban public emergencies. A registration information model for a decision information focusing service chain are also illustrated. Furthermore, an event-driven system for focusing distributed city information resources was designed and implemented. System application experiments were performed with a gas leakage event as a test case. Results show that the proposed focusing service pattern, registration information models, and system are feasible and suitable for emergency response.decision support in the smart city. [ABSTRACT FROM AUTHOR]

The TCM term "harmonizing therapy", stemming from Huangdi Neijing, includes relieving symptoms of the Shaoyang Meridian, soothing the liver and spleen, and regulating the liver and stomach function. Harmonizing therapy, one of common used TCM clinical therapies, reflects the harmonious thoughts of ancient Chinese philosophy. Physicians of generations couldn't find out any way to convince the others on "harmonizing therapy" due to the various methodologies. Using the scientific dialectics to reason the therapy broadly and narrowly from its abstract therapeutic principle, its concrete treatments and its curative effects, the features of connotation were identified in different levels and points. Furthermore, the contention of "harmonizing therapy" should be treated dialectically, which should not be limited to be a certain therapy despite of degree and premise. Using dialectics to guide TCM basic theory may supply new thinking and ideas for modern TCM clinical practice. [ABSTRACT FROM AUTHOR]