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Review of application and research of strut-and-tie models for concrete bridges

Liu Zhao,Lv Zhitao,Hui Zhuo,Wang Jingquan,He Zhiqi

Strategic Study of CAE 2008, Volume 10, Issue 10,   Pages 14-21

Abstract:

The strut-and-tie model (STM) is an emerging procedure for the designBased on the concept and formation of strut-and-tie models, the typical D-regions existing in concreteThe criterion to develop appropriate strut-and-tie models and general procedures for dimensioning the

Keywords： concrete bridge     D-region     strut-and-tie model     design theory    

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The new design method of the reinforcing bars in the prestressed anchorage plates

Zhang Xiangqun,Lin Bo,Liu Zhao

Strategic Study of CAE 2010, Volume 12, Issue 4,   Pages 82-85

Abstract: Seven classical tension stress distributions are described in this paper and a model based on strut-and-tie

Keywords： tooth plate anchorage zone     D region (discontinuity or disturbance region)     strut-and-tie model    

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Ultrasonic measurement of tie-bar stress for die-casting machine

Frontiers of Mechanical Engineering doi: 10.1007/s11465-021-0663-1

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A survey of model-driven techniques and tools for cyber-physical systems

Bo Liu, Yuan-rui Zhang, Xue-lian Cao, Yu Liu, Bin Gu, Tie-xin Wang,liubocq@swu.edu.cn,gubinbj@sina.com

Frontiers of Information Technology & Electronic Engineering 2020, Volume 21, Issue 11,   Pages 1535-1670 doi: 10.1631/FITEE.2000311

Abstract: Among other approaches to dealing with the complex design issues, model-driven design of CPSs has shownIn this review paper, we present a survey of research on model-driven development of CPSs.are an inevitable choice in building CPSs and further research effort is needed in the development of model-driven
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MEMS-based thermoelectric infrared sensors: A review

Dehui XU, Yuelin WANG, Bin XIONG, Tie LI

Frontiers of Mechanical Engineering 2017, Volume 12, Issue 4,   Pages 557-566 doi: 10.1007/s11465-017-0441-2

Abstract:

In the past decade, micro-electromechanical systems (MEMS)-based thermoelectric infrared (IR) sensors have received considerable attention because of the advances in micromachining technology. This paper presents a review of MEMS-based thermoelectric IR sensors. The first part describes the physics of the device and discusses the figures of merit. The second part discusses the sensing materials, thermal isolation microstructures, absorber designs, and packaging methods for these sensors and provides examples. Moreover, the status of sensor implementation technology is examined from a historical perspective by presenting findings from the early years to the most recent findings.

Keywords： thermoelectric infrared sensor     CMOS-MEMS     thermopile     micromachining     wafer-level package    

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Recycling of heat discharged from bearing quenching

WEN Xin-lin, CI Tie-jun, ZHANG Rong-ying, WEN Peng

Frontiers of Mechanical Engineering 2006, Volume 1, Issue 4,   Pages 472-474 doi: 10.1007/s11465-006-0062-7

Abstract: In this paper, the technical method of cooling quench medium with air-cooler in the process of bearing quenching is introduced. The exhausted hot air is directly used to dry bearing balls. It is a novel approach for full utilization of heat energy during heat treatment, which increased 30 % of the heat efficiency when compared with normal air-cooler methods that directly put exhaust air into atmosphere.

Keywords： process     utilization     technical     efficiency     atmosphere    

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An approach for mechanical fault classification based on generalized discriminant analysis

LI Wei-hua, SHI Tie-lin, YANG Shu-zi

Frontiers of Mechanical Engineering 2006, Volume 1, Issue 3,   Pages 292-298 doi: 10.1007/s11465-006-0022-2

Abstract: To deal with pattern classification of complicated mechanical faults, an approach to multi-faults classification based on generalized discriminant analysis is presented. Compared with linear discriminant analysis (LDA), generalized discriminant analysis (GDA), one of nonlinear discriminant analysis methods, is more suitable for classifying the linear non-separable problem. The connection and difference between KPCA (Kernel Principal Component Analysis) and GDA is discussed. KPCA is good at detection of machine abnormality while GDA performs well in multi-faults classification based on the collection of historical faults symptoms. When the proposed method is applied to air compressor condition classification and gear fault classification, an excellent performance in complicated multi-faults classification is presented.

Keywords： generalized discriminant     non-separable     abnormality     classification     multi-faults classification    

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An Ultracompact Spoof Surface Plasmon Sensing System for Adaptive and Accurate Detection of Gas Using a Smartphone

Xuanru Zhang,Jia Wen Zhu,Tie Jun Cui,

Engineering doi: 10.1016/j.eng.2023.05.013

Abstract: Resonantly enhanced dielectric sensing has superior sensitivity and accuracy because the signal is measured from relative resonance shifts that are immune to signal fluctuations. For applications in the Internet of Things (IoT), accurate detection of resonance frequency shifts using a compact circuit is in high demand. We proposed an ultracompact integrated sensing system that merges a spoof surface plasmon resonance sensor with signal detection, processing, and wireless communication. A software-defined scheme was developed to track the resonance shift, which minimized the hardware circuit and made the detection adaptive to the target resonance. A microwave spoof surface plasmon resonator was designed to enhance sensitivity and resonance intensity. The integrated sensing system was constructed on a printed circuit board with dimensions of 1.8 cm × 1.2 cm and connected to a smartphone wirelessly through Bluetooth, working in both frequency scanning mode and resonance tracking mode and achieving a signal-to-noise ratio of 69 dB in acetone vapor sensing. This study provides an ultracompact, accurate, adaptive, sensitive, and wireless solution for resonant sensors in the IoT.

Keywords： Spoof surface plasmons     Internet of Things     Integrated sensing     Resonance tracking     Microwave sensing    

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A local density optimization method based on a graph convolutional network

Hao Wang, Li-yan Dong, Tie-hu Fan, Ming-hui Sun,wanghao18@mails.jlu.edu.cn,dongly@jlu.edu.cn,fth@jlu.edu.cn

Frontiers of Information Technology & Electronic Engineering 2020, Volume 21, Issue 12,   Pages 1671-1814 doi: 10.1631/FITEE.1900663

Abstract: some local information at each node in the graph, so that data preprocessing is incomplete and the modelThus, the optimized input data contains detailed local node information, and then the model generated
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On Differentiation Among Pilot Signals of Multiple Mobile Targets in Retro-Reflective Beamforming for Wireless Power Transmission Article

Xin Wang, Long Li, Tie Jun Cui, Mingyu Lu

Engineering 2023, Volume 30, Issue 11,   Pages 55-62 doi: 10.1016/j.eng.2023.08.010

Abstract:

An experimental study is conducted on several retro-reflective beamforming schemes for wireless power transmission to multiple wireless power receivers (referred to herein as "targets"). The experimental results demonstrate that, when multiple targets broadcast continuous-wave pilot signals at respective frequencies, a retro-reflective wireless power transmitter is capable of generating multiple wireless power beams aiming at the respective targets as long as the multiple pilot signals are explicitly separated from one another by the wireless power transmitter. However, various practical complications are identified when the pilot signals of multiple targets are not appropriately differentiated from each other by the wireless power transmitter. Specifically, when multiple pilot signals are considered to be carried by the same frequency, the wireless power transmission performance becomes heavily dependent on the interaction among the pilot signals, which is highly undesirable in practice. In conclusion, it is essential for a retro-reflective wireless power transmitter to explicitly discriminate multiple targets' pilot signals among each other.

Keywords： Wireless power transmission     Microwave antenna array     Retro-reflective beamforming     Pilot signal     Multiple access    

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Faster fog-aided private set intersectionwith integrity preserving None

Qiang WANG, Fu-cai ZHOU, Tie-min MA, Zi-feng XU

Frontiers of Information Technology & Electronic Engineering 2018, Volume 19, Issue 12,   Pages 1558-1568 doi: 10.1631/FITEE.1800518

Abstract:

Private set intersection (PSI) allows two parties to compute the intersection of their private sets while revealing nothing except the intersection. With the development of fog computing, the need has arisen to delegate PSI on outsourced datasets to the fog. However, the existing PSI schemes are based on either fully homomorphic encryption (FHE) or pairing computation. To the best of our knowledge, FHE and pairing operations consume a huge amount of computational resource. It is therefore an untenable scenario for resource-limited clients to carry out these operations. Furthermore, these PSI schemes cannot be applied to fog computing due to some inherent problems such as unacceptable latency and lack of mobility support. To resolve this problem, we first propose a novel primitive called “faster fog-aided private set intersection with integrity preserving”, where the fog conducts delegated intersection operations over encrypted data without the decryption capacity. One of our technical highlights is to reduce the computation cost greatly by eliminating the FHE and pairing computation. Then we present a concrete construction and prove its security required under some cryptographic assumptions. Finally, we make a detailed theoretical analysis and simulation, and compare the results with those of the state-of-the-art schemes in two respects: communication overhead and computation overhead. The theoretical analysis and simulation show that our scheme is more efficient and practical.

Keywords： Private set intersection     Fog computing     Verifiable     Data privacy    

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FeNi doped porous carbon as an efficient catalyst for oxygen evolution reaction

Jun-Wei Zhang, Hang Zhang, Tie-Zhen Ren, Zhong-Yong Yuan, Teresa J. Bandosz

Frontiers of Chemical Science and Engineering 2021, Volume 15, Issue 2,   Pages 279-287 doi: 10.1007/s11705-020-1965-2

Abstract: Polymer-derived porous carbon was used as a support of iron and nickel species with an objective to obtain an efficient oxygen reduction reaction (OER) catalyst. The surface features were extensively characterized using X-ray diffraction, X-ray photoelectron spectroscopy and high-resolution transmission electron microscopy. On FeNi-modified carbon the overpotential for OER was very low (280 mV) and comparable to that on noble metal catalyst IrO . The electrochemical properties have been investigated to reveal the difference between the binary alloy- and single metal-doped carbons. This work demonstrates a significant step for the development of low-cost, environmentally-friendly and highly-efficient OER catalysts.

Keywords： OER     polystyrene salt     porous carbon     FeNi alloy     p/n junction    

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TIE algorithm: a layer over clustering-based taxonomy generation for handling evolving data None

Rabia IRFAN, Sharifullah KHAN, Kashif RAJPOOT, Ali Mustafa QAMAR

Frontiers of Information Technology & Electronic Engineering 2018, Volume 19, Issue 6,   Pages 763-782 doi: 10.1631/FITEE.1700517

Abstract: A taxonomy incremental evolution (TIE) algorithm, as proposed, is a novel attempt to handle the data

Keywords： Taxonomy     Clustering algorithms     Information science     Knowledge management     Machine learning    

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Contribution of Design Innovation to Oriental Pearl Tower & Menara Jakarta

Jiang Huancheng

Strategic Study of CAE 1999, Volume 1, Issue 1,   Pages 30-35

Abstract:

The project Oriental Pearl Tower, 463.85 m in height, ranked the first in Asia and the third in the world, has attracted millions´ visitors and been publicly recognized as the most important landmark of Shanghai. The project Menara Jakarta, 558 m in height with total floor area of 320 000 m2 is going to be the number one in the world. The pile work of Menara Jakarta has already been completed soon after construction commencement in January 1998. However, the project has to be interrupted due to the intenational financial crisis.
  The success in both Shanghai Oriental Pearl Tower construction and the design competition of Menara Jakarta should be greatly attributed to the design innovation not only in architecture, but also in structure and other disciplines through the whole project from design concept to details. In the project of Shanghai Tower, designers used a string of pearls to symbolize Shanghai, hanging on a mega space frame with a sets of diagonal struts, which breaks out the traditional system of single tube to be commonly used for concrete TV tower.Therefore, a unique architecture was formed for the city landmark. Such kind of structure is also beneficial for wind and seismic resistance. Furthermore, a series of advanced technologies were employed in the tower, such as to use a prestressed concrete shell to support the 50m sphere, to use bi-hanging steel structure for the45m sphere and to design the antenna pole by using climb-up method after integrated on the ground etc. All of these innovations in design ingeniously and rationally solved a lot of problems for such complicated structure, so that the difficult construction work became easy.
  In the project of Menara Jakarta, designers kept and developed all advantages and overcome some shortages in Shanghai Tower. Many new innovations were further made. Therefore the tower becomes simple, straight forward and elegant.In order that the technology innovations were based on solid science, series experimental studies in seismic engineering, wind engineering and static loading had carefully been done for Shanghai Tower, and some studies had been done for Menara Jakarta.

Keywords： design innovation     TV tower     space frame     diagonal strut     sphere     steel pole     hanging structure    

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Microwave metamaterials: from exotic physics to novel information systems Review Articles

Rui-yuan WU, Tie-jun CUI

Frontiers of Information Technology & Electronic Engineering 2020, Volume 21, Issue 1,   Pages 4-26 doi: 10.1631/FITEE.1900465

Abstract: Metamaterials and metasurfaces have attracted much attention due to their powerful ability to control electromagnetic (EM) waves. In this paper, we review the recent developments in the field of EM metamaterials, starting from their exotic physics to their applications in novel information systems. First, we show the fundamental understanding on traditional metamaterials based on the effective medium theory and related applications, such as invisibility cloaks and meta-lenses. Second, we review the two-dimensional versions of metamaterials, i.e., metasurfaces, for controlling spatial waves and surface waves and thereafter present their typical designs. In particular, we briefly introduce spoof surface plasmon polaritons and their applications in microwave frequencies. Following the above approach, we emphatically present the concepts of digital coding metamaterials, programmable metamaterials, and information metamaterials. By extending the principles of information science to metamaterial designs, several functional devices and information systems are presented, which enable digital and EM-wave manipulations simultaneously. Finally, we give a brief summary of the development prospects for microwave metamaterials.

Keywords： Metamaterial     Effective medium theory     Metasurface     Surface plasmon polaritons     Digital coding     Programmable     Information    

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Title Author Date Type Operation

Review of application and research of strut-and-tie models for concrete bridges

Liu Zhao,Lv Zhitao,Hui Zhuo,Wang Jingquan,He Zhiqi

Journal Article

The new design method of the reinforcing bars in the prestressed anchorage plates

Zhang Xiangqun,Lin Bo,Liu Zhao

Journal Article

Ultrasonic measurement of tie-bar stress for die-casting machine

Journal Article

A survey of model-driven techniques and tools for cyber-physical systems

Bo Liu, Yuan-rui Zhang, Xue-lian Cao, Yu Liu, Bin Gu, Tie-xin Wang,liubocq@swu.edu.cn,gubinbj@sina.com

Journal Article

MEMS-based thermoelectric infrared sensors: A review

Dehui XU, Yuelin WANG, Bin XIONG, Tie LI

Journal Article

Recycling of heat discharged from bearing quenching

WEN Xin-lin, CI Tie-jun, ZHANG Rong-ying, WEN Peng

Journal Article

An approach for mechanical fault classification based on generalized discriminant analysis

LI Wei-hua, SHI Tie-lin, YANG Shu-zi

Journal Article

An Ultracompact Spoof Surface Plasmon Sensing System for Adaptive and Accurate Detection of Gas Using a Smartphone

Xuanru Zhang,Jia Wen Zhu,Tie Jun Cui,

Journal Article

A local density optimization method based on a graph convolutional network

Hao Wang, Li-yan Dong, Tie-hu Fan, Ming-hui Sun,wanghao18@mails.jlu.edu.cn,dongly@jlu.edu.cn,fth@jlu.edu.cn

Journal Article

On Differentiation Among Pilot Signals of Multiple Mobile Targets in Retro-Reflective Beamforming for Wireless Power Transmission

Xin Wang, Long Li, Tie Jun Cui, Mingyu Lu

Journal Article

Faster fog-aided private set intersectionwith integrity preserving

Qiang WANG, Fu-cai ZHOU, Tie-min MA, Zi-feng XU

Journal Article

FeNi doped porous carbon as an efficient catalyst for oxygen evolution reaction

Jun-Wei Zhang, Hang Zhang, Tie-Zhen Ren, Zhong-Yong Yuan, Teresa J. Bandosz

Journal Article

TIE algorithm: a layer over clustering-based taxonomy generation for handling evolving data

Rabia IRFAN, Sharifullah KHAN, Kashif RAJPOOT, Ali Mustafa QAMAR

Journal Article

Contribution of Design Innovation to Oriental Pearl Tower & Menara Jakarta

Jiang Huancheng

Journal Article

Microwave metamaterials: from exotic physics to novel information systems

Rui-yuan WU, Tie-jun CUI

Journal Article