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Frequency–angle two-dimensional reflection coefficient modeling based on terahertz channel measurement Correspondence
Zhaowei CHANG, Jianhua ZHANG, Pan TANG, Lei TIAN, Li YU, Guangyi LIU, Liang XIA,changzw12345@bupt.edu.cn,jhzhang@bupt.edu.cn
Frontiers of Information Technology & Electronic Engineering 2023, Volume 24, Issue 4, Pages 626-632 doi: 10.1631/FITEE.2200290
Keywords: 太赫兹通信;反射系数建模;入射角;建筑材料;菲涅耳模型
Graphene-metasurface for wide-incident-angle terahertz absorption Research
Ri-hui Xiong, Xiao-qing Peng, Jiu-sheng Li,lijsh2008@126.com
Frontiers of Information Technology & Electronic Engineering 2021, Volume 22, Issue 3, Pages 287-436 doi: 10.1631/FITEE.2000079
Keywords: 石墨烯超表面;太赫兹吸收器;欧米伽形石墨烯图案
From Terahertz Imaging to Terahertz Wireless Communications Review
Yi Huang,Yaochun Shen,Jiayou Wang
Engineering 2023, Volume 22, Issue 3, Pages 106-124 doi: 10.1016/j.eng.2022.06.023
Terahertz (THz) technology is probably best known to the public as a powerful tool for imaging, since it has been applied in security and medical scanning, resulting in numerous impressive images that would be unobtainable using other technologies. With the roll-out of 5G mobile networks, research into 6G wireless communications is heating up. It is envisioned that THz technology will be used for 6G and future wireless communications. In this paper, we review how THz technology has been employed for imaging and wireless communications, identify state-of-the-art developments in the field, and then examine and compare common devices and issues in both applications. The possibility of integrating THz imaging/sensing and wireless communications is considered, and challenges and future perspectives are presented and discussed. It is shown that THz technology is indeed a key enabling technology for both imaging and wireless communications in the future.
Keywords: Communications Imaging Terahertz technology Wireless communications
Qingyi Guo, Hang Wong,guo_qingyi@163.com,hang.wong@cityu.edu.hk
Frontiers of Information Technology & Electronic Engineering 2021, Volume 22, Issue 4, Pages 599-608 doi: 10.1631/FITEE.2000514
A high-precision terahertz retrodirective antenna array with navigation signal at a different frequency Correspondence
Zhong-bo ZHU, Wei-dong HU, Tao QIN, Sheng LI, Xiao-jun LI, Jiang-jie ZENG, Xian-qi LIN, Leo P. LIGTHART
Frontiers of Information Technology & Electronic Engineering 2020, Volume 21, Issue 3, Pages 377-383 doi: 10.1631/FITEE.1900581
Keywords: Terahertz Retrodirective antenna array Terahertz communications Conjugate mixing
Liu Rong,Zheng Yonghong,You Yage,Sun Xiaoyan,
Strategic Study of CAE 2005, Volume 7, Issue 3, Pages 42-48
Effects of incident wave angle and complicated topography on hydrodynamic characteristics of a buoy are studied using the Finite Element Method (FEM). The hydrodynamic coefficients of different conditions are acquired. The correctness of the numerical method is verified through a comparison with analytical results of a simple seabed. In order to improve the efficiency of the analysis, the BiCGStab algorithm, considered to be among the most powerful algorithm in solving linear systems, is employed. The results presented here will supply some important information for designs of ocean structures.
Keywords: oblique waves buoy complex topography FEM
Channelmeasurements and models for 6G: current status and future outlook Review Articles
Jian-hua ZHANG, Pan TANG, Li YU, Tao JIANG, Lei TIAN
Frontiers of Information Technology & Electronic Engineering 2020, Volume 21, Issue 1, Pages 39-61 doi: 10.1631/FITEE.1900450
Keywords: Channel measurements Channel models Sixth generation Terahertz Industrial Internet of Things Space-air-ground integrated network Machine learning
Tall Buildings with Dynamic Facade Under Winds Article
Fei Ding, Ahsan Kareem
Engineering 2020, Volume 6, Issue 12, Pages 1443-1453 doi: 10.1016/j.eng.2020.07.020
Burgeoning growth of tall buildings in urban areas around the world is placing new demands on their performance under winds. This involves selection of the building form that minimizes wind loads and structural topologies that efficiently transfer loads. Current practice is to search for optimal shapes, but this limits buildings with static or fixed form. Aerodynamic shape tailoring that consists of modifying the external form of the building has shown great promise in reducing wind loads and associated structural motions as reflected in the design of Taipei 101 and Burj Khalifa. In these buildings, corner modifications of the cross-section and tapering along the height are introduced. An appealing alternative is to design a building that can adapt its form to the changing complex wind environment in urban areas with clusters of tall buildings, i.e., by implementing a dynamic facade. To leap beyond the static shape optimization, autonomous dynamic morphing of the building shape is advanced in this study, which is implemented through a cyber–physical system that fuses together sensing, computing, actuating and engineering informatics. This approach will permit a building to intelligently morph its profile to minimize the source of dynamic wind load excitation, and holds the promise of revolutionizing tall buildings from conventional static to dynamic facades by taking advantage of the burgeoning advances in computational design.
Keywords: Tall buildings Aerodynamic shape tailoring Autonomous morphing Cyber–physical system Computational design Surrogate modeling Machine learning
Standardization of 6G Key Technologies: Thoughts and Suggestions
Luo Yan, Quan Wei, Zhang Hongke
Strategic Study of CAE 2023, Volume 25, Issue 6, Pages 18-26 doi: 10.15302/J-SSCAE-2023.06.003
Research on the sixth-generation mobile communication (6G) technology starts gradually after the commercialization of the fifth-generation mobile communication (5G) technology, thus to support the development of digital economy and the construction of digital infrastructure. Countries worldwide are now competing for the establishment of 6G standards. This study reviews the development status of 6G standards from the aspects of 6G technology development in major developed countries and regions, international cooperation in 6G standards development, and 6G technology development in China. Moreover, it explores the integrated application and standardization progresses of 6G technology, involving the standardization of computing power networks, blockchain, digital twins, artificial intelligence, and holographic communications. China can make plans in advance for the standardization of 6G key technologies, focusing on terahertz, smart metasurface, smart holographic radio, super-large-scale MIMO, and communicationsperception integration technologies. Furthermore, the following suggestions are proposed: (1) strengthening the independent innovation of 6G key technologies to promote the independent development of 6G basic industries; (2) accelerating cross-industry cooperation and innovation to establish the standards system for 6G key technologies; and (3) deepening international cooperation on 6G technologies to help create an open and win-win global industrial ecology.
Keywords: 6G standards establishment terahertz computing power network communications and perception integration
Conference Date: 26 Feb 2020
Conference Place: 日本东京理科大学
Administered by: ICBMC 2020
Hybrid Data-Driven and Mechanistic Modeling Approaches for Multiscale Material and Process Design Perspective
Teng Zhou, Rafiqul Gani, Kai Sundmacher
Engineering 2021, Volume 7, Issue 9, Pages 1231-1238 doi: 10.1016/j.eng.2020.12.022
The world’s increasing population requires the process industry to produce food, fuels, chemicals, and consumer products in a more efficient and sustainable way. Functional process materials lie at the heart of this challenge. Traditionally, new advanced materials are found empirically or through trial-and-error approaches. As theoretical methods and associated tools are being continuously improved and computer power has reached a high level, it is now efficient and popular to use computational methods to guide material selection and design. Due to the strong interaction between material selection and the operation of the process in which the material is used, it is essential to perform material and process design simultaneously. Despite this significant connection, the solution of the integrated material and process design problem is not easy because multiple models at different scales are usually required. Hybrid modeling provides a promising option to tackle such complex design problems. In hybrid modeling, the material properties, which are computationally expensive to obtain, are described by data-driven models, while the well-known process-related principles are represented by mechanistic models. This article highlights the significance of hybrid modeling in multiscale material and process design. The generic design methodology is first introduced. Six important application areas are then selected: four from the chemical engineering field and two from the energy systems engineering domain. For each selected area, state-ofthe- art work using hybrid modeling for multiscale material and process design is discussed. Concluding remarks are provided at the end, and current limitations and future opportunities are pointed out.
Keywords: Data-driven Surrogate model Machine learning Hybrid modeling Material design Process optimization
Modeling technology digital geologic stratum body in the proportion of pinch in 3D GIS
Dong Zhi
Strategic Study of CAE 2010, Volume 12, Issue 2, Pages 76-82
Geological prospecting data into three-dimensional system and various three-dimensional modeling methods were used to reason and connect the formation of stratum automatically to generate three-dimensional model of formation. The modeling methods can easily liberate geological workers in the field of water conservancy and hydropower from the heavy geological information access and geological interpretation of the manual labor, thus enhance the speed of three-dimensional stratum modeling and also the quality of construction.
Keywords: three-dimensional digital geologic model virtual borehole multi-proportion of pinch automatical modeling decomposition of triangular itself
3D Modeling and Visualization of Virtual Construction Grou p
Zhang Zhengfeng,Fu Jinqiang,Zhang Fayu
Strategic Study of CAE 2007, Volume 9, Issue 5, Pages 53-56
3D modeling methods of terrain, city structure, highway and other attached establishments are presented in detail. Taking into account the matching of 3D object with terrain model, the visualization processes of digital city are analyzed. 3D modeling and visualization of residential district are realized. Practical application shows that this approach has good adaptability and provides a new supplementary means for 3D visual design of digital city.
Keywords: virtual construction group 3D modeling visualization terrain match
Novel X-ray and Optical Diagnostics for Studying Energetic Materials: A Review Review
Yiyang Zhang, Sen Chen, Yang Cai, Lei Lu, Duan Fan, Jinchun Shi, Junyu Huang, Sheng-Nian Luo
Engineering 2020, Volume 6, Issue 9, Pages 992-1005 doi: 10.1016/j.eng.2020.06.019
Thermomechanical, physical, and chemical processes in energetic materials (EMs) during manufacturing and processing or under external stimuli such as shock compression, involve multiple temporal and spatial scales. Discovering novel phenomena, acquiring new data, and understanding underlying mechanisms all require temporally and spatially resolved diagnostics. Here, we present a brief review of novel diagnostics that are either emerging or have existed but rarely been applied to EMs, including two-dimensional (2D) and three-dimensional (3D) X-ray imaging, X-ray diffraction, coherent X-ray diffraction imaging, small angle X-ray scattering, terahertz and optical absorption/emission spectroscopy, and one-dimensional (1D) and 2D laser-based velocity/displacement interferometry. Typical spatial scales involved are lattice (nanometer and micrometer) and typical temporal scales (femtosecond, picosecond, nanosecond, microsecond, and millisecond). The targeted scientific questions and engineering problems include defects, strengths, deformations, hot spots, phase changes, reactions, and shock sensitivities. Basic principles of measurement and data analysis, and illustrative examples of these are presented. Advanced measurements and experimental complexities also necessitate further development in corresponding data analysis and interpretation methodologies, and multiscale modeling
Keywords: Energetic materials X-ray Terahertz and optical diagnostics Multiscale measurements
Building Information and Physical Model: A Novel Form of Information Description for Buildings
Yang Qiliang, Xing Jianchun
Strategic Study of CAE 2023, Volume 25, Issue 5, Pages 222-232 doi: 10.15302/J-SSCAE-2023.07.027
Information is the core element to drive human‒cyber‒physical collaborations and promote the orderly operation of building activities in the entire lifecycle of buildings. More realistic and efficient description and sharing of building information has always been an important theme pursued in the field of architecture. To meet the rapidly growing demand for interactive collaboration between virtual and real building conditions, this study proposes a novel form of information description for buildings, namely a building information and physical model (BIPM), for realizing the true mapping and collaboration from building physical entities to the information space. The BIPM is composed of a building basic information model, a physical model, and an interaction model, and unifies the description of the external geometric attribute information and the internal physical mechanisms of buildings. The theoretical foundation and key technical system of the BIPM are discussed, and the application effectiveness and benefits of the BIPM are demonstrated using building chillers as an example. Furthermore, the application ecologies and values of the BIPM are analyzed. Research suggestions are proposed as follows: (1) deepening the research on BIPM theories and key technologies, (2) formulating serialized BIPM standards and specifications, and (3) developing BIPM building industry software tools to expand the BIPM application ecosystem. This study is expected to provide support for the development of new basic software for the building industry,involving architectural design, construction, operation and maintenance, and urban digital twins.
Keywords: architectural information description information modeling technology building information model digital twins building industry software
Title Author Date Type Operation
Frequency–angle two-dimensional reflection coefficient modeling based on terahertz channel measurement
Zhaowei CHANG, Jianhua ZHANG, Pan TANG, Lei TIAN, Li YU, Guangyi LIU, Liang XIA,changzw12345@bupt.edu.cn,jhzhang@bupt.edu.cn
Journal Article
Graphene-metasurface for wide-incident-angle terahertz absorption
Ri-hui Xiong, Xiao-qing Peng, Jiu-sheng Li,lijsh2008@126.com
Journal Article
From Terahertz Imaging to Terahertz Wireless Communications
Yi Huang,Yaochun Shen,Jiayou Wang
Journal Article
A dual-polarized Fabry–Pérot antenna with high gain and wide bandwidth for millimeter-wave applications
Qingyi Guo, Hang Wong,guo_qingyi@163.com,hang.wong@cityu.edu.hk
Journal Article
A high-precision terahertz retrodirective antenna array with navigation signal at a different frequency
Zhong-bo ZHU, Wei-dong HU, Tao QIN, Sheng LI, Xiao-jun LI, Jiang-jie ZENG, Xian-qi LIN, Leo P. LIGTHART
Journal Article
Finite Element Analysis for Effects of Incident Wave Angle and Seabed on Hydrodynamic Characteristics of Buoy
Liu Rong,Zheng Yonghong,You Yage,Sun Xiaoyan,
Journal Article
Channelmeasurements and models for 6G: current status and future outlook
Jian-hua ZHANG, Pan TANG, Li YU, Tao JIANG, Lei TIAN
Journal Article
Standardization of 6G Key Technologies: Thoughts and Suggestions
Luo Yan, Quan Wei, Zhang Hongke
Journal Article
第五届建筑材料与建筑国际会议(ICBMC 2020)
26 Feb 2020
Conference Information
Hybrid Data-Driven and Mechanistic Modeling Approaches for Multiscale Material and Process Design
Teng Zhou, Rafiqul Gani, Kai Sundmacher
Journal Article
Modeling technology digital geologic stratum body in the proportion of pinch in 3D GIS
Dong Zhi
Journal Article
3D Modeling and Visualization of Virtual Construction Grou p
Zhang Zhengfeng,Fu Jinqiang,Zhang Fayu
Journal Article
Novel X-ray and Optical Diagnostics for Studying Energetic Materials: A Review
Yiyang Zhang, Sen Chen, Yang Cai, Lei Lu, Duan Fan, Jinchun Shi, Junyu Huang, Sheng-Nian Luo
Journal Article