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An array of two periodic leaky-wave antennas with sum and difference beam scanning for application in Research Article

Mianfeng HUANG, Juhua LIU,liujh33@mail.sysu.edu.cn

Frontiers of Information Technology & Electronic Engineering 2023, Volume 24, Issue 4,   Pages 567-581 doi: 10.1631/FITEE.2200473

Abstract: the two LWAs, two beams with two different directions can be realized, which can be combined into a sumbeam when the array is fed in phase or into a difference beam when the array is fed 180° out of phaseMeasurement results show that the sum beam can reach a gain up to 15.9 dBi and scan from -33.4° to 20.8In the scanning range, the direction of the null in the difference beam is consistent with the directionof the sum beam, with the lowest null depth of -40.8 dB.

Keywords： Antenna     Leaky-wave antenna (LWA)     Substrate-integrated waveguide (SIW)     Sum and difference beam     Target    

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Deceptive jamming discrimination based on range-anglelocalization of a frequency diverse array Article

Zhao-jian ZHANG, Jun-wei XIE, Chuan SHENG, Zhun TANG

Frontiers of Information Technology & Electronic Engineering 2017, Volume 18, Issue 9,   Pages 1437-1446 doi: 10.1631/FITEE.1601577

Abstract: array (FDA) in radar electronic countermeasure environments.FDA offers a new range-angle-dependent beamrange, a mismatch between the test angle and physical angleoccurs when the slant range on which the beamIn addition, the range of thetarget can be extracted by sum-difference beam except for time-delaytesting, because the beam provides a range resolution in the FDA thatcannot be deceived by traditional deceptive

Keywords： Frequency diverse array (FDA)     Deceptive jamming     Range-angle coupling     Sum-difference beam     Double-pulse    

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Distributed optimization based on improved push-sum framework for optimization problem with multiple

徐谦,俞楚天,袁翔,韦梦立,刘洪喆

Frontiers of Information Technology & Electronic Engineering 2023, Volume 24, Issue 9,   Pages 1253-1260 doi: 10.1631/FITEE.2200596

Abstract: To this end, with the push-sum framework improved, the distributed optimization algorithm is newly designed

Keywords： Distributed optimization     Nonidentical constraints     Improved push-sum framework    

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An improved low-complexity sum-product decoding algorithm for low-density parity-check codes

Michaelraj Kingston ROBERTS,Ramesh JAYABALAN

Frontiers of Information Technology & Electronic Engineering 2015, Volume 16, Issue 6,   Pages 511-518 doi: 10.1631/FITEE.1400269

Abstract: In this paper, an improved low-complexity sum-product decoding algorithm is presented for low-densityMoreover, when compared with the sum-product algorithm (SPA), the proposed decoding algorithm can achieve

Keywords： Computational complexity     Coding gain     Fast Fourier transform (FFT)     Low-density parity-check (LDPC) codes     Sum-product    

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Temperature difference-powered carbon nanotube bearings

Quanwen HOU, Bingyang CAO, Zengyuan GUO

Frontiers in Energy 2011, Volume 5, Issue 1,   Pages 49-52 doi: 10.1007/s11708-010-0111-0

Abstract: simulations are conducted to study the motion of carbon nanotube-based nanobearings powered by temperature differenceWhen a temperature difference exists between stator nanotubes, the rotor nanotubes acquire a higher temperatureThe thermal driving force increases with the increase in temperature difference between the stators,an increase that is nearly proportional to the temperature difference.

Keywords： temperature difference-induced motion     carbon nanotubes     nanobearing     molecular dynamics simulation    

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Experimental investigation of fatigue behavior of spur gear in altered tooth-sum gearing

H. K. SACHIDANANDA, Joseph GONSALVIS, H. R. PRAKASH

Frontiers of Mechanical Engineering 2012, Volume 7, Issue 3,   Pages 268-278 doi: 10.1007/s11465-012-0331-6

Abstract: This paper deals with the contact stress, power loss, and pitting of spur gear tooth in altered tooth-sumgearing for a tooth-sum of 100 teeth when altered by±4% tooth-sum.Analytical and experimental methods were performed to investigate and compare the altered tooth-sum gearingagainst the standard tooth-sum gearing.The negative alteration in the tooth-sum performed better than the positive alteration in a tooth-sum

Keywords： spur gear     power recirculating test rig     altered tooth-sum gearing     scanning electron microscopy (SEM)    

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Scaling up of cluster beam deposition technology for catalysis application

Frontiers of Chemical Science and Engineering 2021, Volume 15, Issue 6,   Pages 1360-1379 doi: 10.1007/s11705-021-2101-7

Abstract: Many research works have demonstrated that the combination of atomically precise cluster deposition and theoretical calculations is able to address fundamental aspects of size-effects, cluster-support interactions, and reaction mechanisms of cluster materials. Although the wet chemistry method has been widely used to synthesize nanoparticles, the gas-phase synthesis and size-selected strategy was the only method to prepare supported metal clusters with precise numbers of atoms for a long time. However, the low throughput of the physical synthesis method has severely constrained its wider adoption for catalysis applications. In this review, we introduce the latest progress on three types of cluster source which have the most promising potential for scale-up, including sputtering gas aggregation source, pulsed microplasma cluster source, and matrix assembly cluster source. While the sputtering gas aggregation source is leading ahead with a production rate of ~20 mg·h–1, the pulsed microplasma source has the smallest physical dimensions which makes it possible to compact multiple such devices into a small volume for multiplied production rate. The matrix assembly source has the shortest development history, but already show an impressive deposition rate of ~10 mg·h–1. At the end of the review, the possible routes for further throughput scale-up are envisaged.

Keywords： nanoparticle     cluster     cluster beam deposition     magnetron sputtering     heterogeneous catalysis    

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Analogue Difference Balanced Function and Its Applications

Zhang Wenying,Li Shiqu

Strategic Study of CAE 2004, Volume 6, Issue 3,   Pages 45-52

Abstract:

This paper presents the concept of analogous difference of Boolean function, and call the Booleanfunction an analogue difference balanced function if whose analogous difference is balanced at any nonzero

Keywords： Bent function     perfect nonlinear function     2-radical expansion     analogue difference     analogue auto-correlationfunction     analogue difference balanced function    

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Synthesis of Intermittent-Motion Linkages with Slight Difference in Length Between Links

CHEN Xin-bo, YU Zhen

Frontiers of Mechanical Engineering 2006, Volume 1, Issue 1,   Pages 76-79 doi: 10.1007/s11465-005-0007-6

Abstract: In this paper, (1) a new method for realizing intermittent motion, using linkages with a slight difference

Keywords： synthesis     useful     intermittent     intermittent-motion     traditional    

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Comprehensive Utilization of Temperature Difference Energy and Low-Temperature Seawater Resources

Fu Qiang, Wang Guorong, Zhou Shouwei, Zhong Lin, Zhang Li, Yu Xingyong, Yang Pu

Strategic Study of CAE 2021, Volume 23, Issue 6,   Pages 52-60 doi: 10.15302/J-SSCAE-2021.06.007

Abstract:

China has a huge amount of ocean temperature difference energy resourcesseawater to generate electricity; this can help overcome the difficulties regarding the temperature differencetechnical references and application demonstrations for the comprehensive utilization of temperature difference

Keywords： ocean temperature difference energy     low-temperature seawater resources     liquefied natural gas cold energy     comprehensive utilization     temperature difference power generation    

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The Difference Effect of Environmental Regulation on Two Stages of Technology Innovation in China’s Manufacturing

Bao-long Yuan,Sheng-gang Ren,Xing Hu,Xuan-yu Yang

Frontiers of Engineering Management 2016, Volume 3, Issue 1,   Pages 24-29 doi: 10.15302/J-FEM-2016007

Abstract: This paper divides technological innovation into two stages: technology development and technology transfer. Then the authors use the panel data of 28 manufacturing industries during 2003–2012 to test the econometric regression model for the industry of the sub stages, which is a regulation on technological innovation in the environment. The results show that: (1) environmental regulation has a significant role in promoting China’s manufacturing technology research patent achievements, and technology into new products, and this indicated that “Porter hypothesis” in the manufacturing sector has been verified; (2) R&D and transfer expenditure have a positive impact on technological innovation. Finally, the authors put forward the corresponding policy recommendations for industry of the environmental regulation on the impact of technological innovation in phases.

Keywords： environmental regulation     technology innovation     stage difference     manufacturing    

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Three-dimensional finite difference analysis of shallow sprayed concrete tunnels crossing a reverse fault

Masoud RANJBARNIA, Milad ZAHERI, Daniel DIAS

Frontiers of Structural and Civil Engineering 2020, Volume 14, Issue 4,   Pages 998-1011 doi: 10.1007/s11709-020-0621-8

Abstract: normal fault movement on a transversely crossing shallow shotcreted tunnel are investigated by 3D finite difference

Keywords： urban tunnel     sprayed concrete     reverse fault     normal fault     finite difference analysis    

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Processing parameter optimization of fiber laser beam welding using an ensemble of metamodels and MOABC

Frontiers of Mechanical Engineering 2022, Volume 17, Issue 4, doi: 10.1007/s11465-022-0703-5

Abstract: In fiber laser beam welding (LBW), the selection of optimal processing parameters is challenging and

Keywords： laser beam welding     parameter optimization     metamodel     multi-objective    

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Application of consistent geometric decomposition theorem to dynamic finite element of 3D composite beam

Iman FATTAHI, Hamid Reza MIRDAMADI, Hamid ABDOLLAHI

Frontiers of Structural and Civil Engineering 2020, Volume 14, Issue 3,   Pages 675-689 doi: 10.1007/s11709-020-0625-4

Abstract: equivalent single layer approach is utilized for dynamic finite element procedures of 3D composite beam

Keywords： composite beam     dynamic finite element     degrees of freedom coupling     experimental validation     numerical validation    

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Experimental and numerical analysis of beam to column joints in steel structures

Gholamreza ABDOLLAHZADEH, Seyed Mostafa SHABANIAN

Frontiers of Structural and Civil Engineering 2018, Volume 12, Issue 4,   Pages 642-661 doi: 10.1007/s11709-017-0457-z

Abstract: as formability under extreme loads such as earthquakes are the primary challenges in the modeling of beam-to-columnand neural network methods have been presented in order to model the complex hysteresis behavior of beam-to-columntraining of the neural network, the experiments were carried out on samples with real dimensions of beam-to-columnthat the combinational modeling is able to display the complex narrowed hysteresis behavior of the beam-to-column

Keywords： beam to column connections     experiments     component method     neural network model     combinational modeling    

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Title Author Date Type Operation

An array of two periodic leaky-wave antennas with sum and difference beam scanning for application in

Mianfeng HUANG, Juhua LIU,liujh33@mail.sysu.edu.cn

Journal Article

Deceptive jamming discrimination based on range-anglelocalization of a frequency diverse array

Zhao-jian ZHANG, Jun-wei XIE, Chuan SHENG, Zhun TANG

Journal Article

Distributed optimization based on improved push-sum framework for optimization problem with multiple

徐谦,俞楚天,袁翔,韦梦立,刘洪喆

Journal Article

An improved low-complexity sum-product decoding algorithm for low-density parity-check codes

Michaelraj Kingston ROBERTS,Ramesh JAYABALAN

Journal Article

Temperature difference-powered carbon nanotube bearings

Quanwen HOU, Bingyang CAO, Zengyuan GUO

Journal Article

Experimental investigation of fatigue behavior of spur gear in altered tooth-sum gearing

H. K. SACHIDANANDA, Joseph GONSALVIS, H. R. PRAKASH

Journal Article

Scaling up of cluster beam deposition technology for catalysis application

Journal Article

Analogue Difference Balanced Function and Its Applications

Zhang Wenying,Li Shiqu

Journal Article

Synthesis of Intermittent-Motion Linkages with Slight Difference in Length Between Links

CHEN Xin-bo, YU Zhen

Journal Article

Comprehensive Utilization of Temperature Difference Energy and Low-Temperature Seawater Resources

Fu Qiang, Wang Guorong, Zhou Shouwei, Zhong Lin, Zhang Li, Yu Xingyong, Yang Pu

Journal Article

The Difference Effect of Environmental Regulation on Two Stages of Technology Innovation in China’s Manufacturing

Bao-long Yuan,Sheng-gang Ren,Xing Hu,Xuan-yu Yang

Journal Article

Three-dimensional finite difference analysis of shallow sprayed concrete tunnels crossing a reverse fault

Masoud RANJBARNIA, Milad ZAHERI, Daniel DIAS

Journal Article

Processing parameter optimization of fiber laser beam welding using an ensemble of metamodels and MOABC

Journal Article

Application of consistent geometric decomposition theorem to dynamic finite element of 3D composite beam

Iman FATTAHI, Hamid Reza MIRDAMADI, Hamid ABDOLLAHI

Journal Article

Experimental and numerical analysis of beam to column joints in steel structures

Gholamreza ABDOLLAHZADEH, Seyed Mostafa SHABANIAN

Journal Article