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Diversity Glass Antennas for Tri-Band WiFi Applications Article

Peng Fei Hu, Kwok Wa Leung, Kwai Man Luk, Yong Mei Pan, Shao Yong Zheng

Engineering 2023, Volume 23, Issue 4,   Pages 157-169 doi: 10.1016/j.eng.2022.09.011

Abstract: fidelity (WiFi) applications.It also investigates what type of diversity antenna is most suitable for WiFi router applications bybenchmark the performance of the glass DRA in WiFi router applications.All three of the new diversity antennas were fabricated and measured to verify the simulations.In our experiment, the bit error rate (BER) of the three diversity glass antennas and the reference space-diversity

Keywords： WiFi Diversity antennas Multi-frequency     Glass     Dielectric resonator antennas     Multiple-input multiple-output    

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Frequency domain a9ctive vibration control of a flexible plate based on neural networks

Jinxin LIU, Xuefeng CHEN, Zhengjia HE

Frontiers of Mechanical Engineering 2013, Volume 8, Issue 2,   Pages 109-117 doi: 10.1007/s11465-013-0252-z

Abstract:

A neural-network (NN)-based active control system was proposed to reduce the low frequency noise radiationMulti-frequency control in frequency domain was achieved by simulation through the NN-based control systems

Keywords： active vibration control (AVC)     neural network (NN)     low frequency noise     frequency domain control     multi-frequency    

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CROP DIVERSITY AND SUSTAINABLE AGRICULTURE: MECHANISMS, DESIGNS AND APPLICATIONS

Frontiers of Agricultural Science and Engineering 2021, Volume 8, Issue 3,   Pages 359-361 doi: 10.15302/J-FASE -2021417

Abstract: The global crop diversity has declined in past decades.

Crop species diversity at a national scale was identified as one of the most important factorsA group of long-term field experiments demonstrated that crop diversity also stabilizes temporal grainTherefore, maintaining crop diversity at both national and field levels is of considerable importance

Crop diversity includes temporal (crop rotation) and spatial diversity (e.g., intercropping,

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Fungal diversity and its mechanism of community shaping in the milieu of sanitary landfill

Frontiers of Environmental Science & Engineering 2021, Volume 15, Issue 4, doi: 10.1007/s11783-020-1370-6

Abstract:

• Ascomycota was the predominant phylum in sanitary landfill fungal communities.

Keywords： Sanitary landfill     Fungal community     Diversity     Saprotroph     Physical habitat     Environmental factor    

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Development and testing of a wireless smart toolholder with multi-sensor fusion

Frontiers of Mechanical Engineering 2023, Volume 18, Issue 4, doi: 10.1007/s11465-023-0774-y

Abstract: In this study, we propose a wireless smart toolholder with multi-sensor fusion for simultaneous sensingThereafter, structural design, circular runout, dynamic balancing, static stiffness, and dynamic inherent frequency

Keywords： wireless smart toolholder     multi-sensor fusion     circular runout     dynamic balancing     static stiffness     dynamic inherent frequency    

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Fundamental frequency and testing mode of complicated elastic clamped-plate vibration

QI Hongyuan, GUAN Yiduo

Frontiers of Mechanical Engineering 2008, Volume 3, Issue 4,   Pages 360-364 doi: 10.1007/s11465-008-0084-4

Abstract: set up the mapping function between a complicated region and a unit dish region, and the fundamental frequencyTaking an elastic rectangle-plate with arc radius as an example, the testing mode frequency band of platesis determined by analyzing the fundamental frequency; meanwhile, according to hamming testing methodof multi-point excitation to the single-point response, and by signal processing technology and itsComparing the first order modal frequency with the theoretical fundament frequency, the validity of the

Keywords： multi-point excitation     rectangle-plate     single-point     processing technology     trigonometric interpolation    

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Impact of wind power generating system integration on frequency stabilization in multi-area power system

Y. K. BHATESHVAR,H. D. MATHUR,H. SIGUERDIDJANE

Frontiers in Energy 2015, Volume 9, Issue 1,   Pages 7-21 doi: 10.1007/s11708-014-0338-2

Abstract: inertial support because of power electronic converters between the grid and the WPGS to facilitate frequencyThe control scheme uses fuzzy logic based design and takes frequency deviation as input to provide quickactive power support, which balances the drop in frequency and tie-line power during transient conditionspaper presents a comprehensive study of the wind power impact with increasing wind power penetration on frequency

Keywords： two area power system     automatic generation control     wind power generating system (WPGS)     deregulated environment     fuzzy logic controller (FLC)    

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Research on Prony’s method modeling in multi-target detection of stepped-frequency radar

Hu Tiling,Li Xingguo

Strategic Study of CAE 2008, Volume 10, Issue 10,   Pages 67-71

Abstract:

Stepped-frequency signal is a broad band signal which enhances rangeBaseband signal that is received in stepped-frequency radar can be thought of as the linear combinationExtended Prony algorithm is applied to stepped-frequency radar, which can obtain more exact target information

Keywords： high resolution radar     stepped-frequency signal     extended Prony’s method     multi-scattering center    

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Pelagic-benthic coupling of the microbial food web modifies nutrient cycles along a cascade-dammed river

Frontiers of Environmental Science & Engineering 2022, Volume 16, Issue 4, doi: 10.1007/s11783-021-1484-5

Abstract:

• Structure of multi-trophic microbial groups were analyzed using DNA

Keywords： Reservoir     Multi-trophic     Beta diversity     Predator-prey     Nutrient accumulation    

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The μ Robust Control Design for Mobile Satellite Antennas

Li Guo,Hu Jianfei,Ji Xianzheng

Strategic Study of CAE 2007, Volume 9, Issue 5,   Pages 22-26

Abstract: investigates the use of the μ robust controller for improving control performance of mobile satellite antennasA robust control system of mobile satellite antennas is presented,  and the μ robust controlleris designed according to the mobile satellite antennas systems model. It is clarified that the control performance of mobile satellite antennas is improved and the control

Keywords： mobile satellite antennas     theμdesign     robust control    

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Multi-harmonic forced vibration and resonance of simple beams to moving vehicles

Frontiers of Structural and Civil Engineering   Pages 981-993 doi: 10.1007/s11709-023-0979-5

Abstract: modeled the moving-vehicle-induced forcing excitation on a single-span prismatic bridge as a multiple frequency-multiplicationThe forced modal responses consist of multiple frequency-multiplication steady-state harmonics and onedamped mono-frequency complementary harmonic.single-span simple beams, the moving vehicle carriage heaving oscillation modulates the beam modal frequency

Keywords： forced vibration     linear Euler beam     moving load     harmonic structure     frequency modulation     end restraints    

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Load shedding scheme for an interconnected hydro-thermal hybrid system with SMES

D. TYAGI, Ashwani KUMAR, Saurabh CHANANA

Frontiers in Energy 2012, Volume 6, Issue 3,   Pages 227-236 doi: 10.1007/s11708-012-0198-6

Abstract: The frequency of the power system varies based on the load pattern of the consumers.With continuous increase in the load, the frequency of the system keeps decreasing and may reach itsFurther increase in the load will result in more frequency drop leading to the need of load shedding,in a hybrid thermal-hydro system for finding the required amount of load to be shed for setting the frequencyThe load shedding steps were obtained based on the rate of change of frequency with the increase in the

Keywords： critical load     frequency response     load shedding     multi-area system     rate of change of frequency     superconducting    

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Load shedding scheme for the two-area system with linear quadratic regulator

D. TYAGI, Ashwani KUMAR, Saurabh CHANANA

Frontiers in Energy 2013, Volume 7, Issue 1,   Pages 90-102 doi: 10.1007/s11708-012-0224-8

Abstract: to many emergency conditions which may lead to emergency state of operation with decay in the system frequencyThe dramatic change in the frequency can result in cascaded failure of the system.two-area thermal-thermal system for finding the required amount of load to be shed for setting the frequencyThe LS steps have been obtained based on the rate of change of frequency with the increase in load in

Keywords： critical load     frequency response     load shedding (LS)     multi-area system     rate of change of frequency     linear    

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Grassland management practices in Chinese steppes impact productivity, diversity and the relationship

Yingjun ZHANG, Wenjie LU, Hao ZHANG, Jiqiong ZHOU, Yue SHEN

Frontiers of Agricultural Science and Engineering 2018, Volume 5, Issue 1,   Pages 57-63 doi: 10.15302/J-FASE-2017192

Abstract: crucial parts of the terrestrial ecosystem, with an extremely high differentiation of productivity and diversityThis study focuses on the changes in productivity and diversity and the relationship between them asProductivity was significantly improved but diversity was lost by fertilizing.N fertilization also reduced the sensitivity of diversity to productivity.Mowing also slowed down the decline in diversity as productivity increased.

Keywords： diversity     fertilizing     grassland management practice     grazing     mowing     productivity     reseeding    

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PD pattern recognition based on multi-fractal dimension in GIS

ZHANG Xiaoxing, YAO Yao, TANG Ju, ZHOU Qian, XU Zhongrong

Frontiers of Mechanical Engineering 2008, Volume 3, Issue 3,   Pages 270-275 doi: 10.1007/s11465-008-0042-1

Abstract: The GIS gray intensity images are constructed based on the mass specimens gathered by the ultra-high frequencyThe multi-fractal dimension is founded on the box-counting dimension and multi-fractal theories.The GIS gray intensity images distillation methods, based on multi-fractal characteristics, is put forwardThe box-counting dimension, multi-fractal dimension, and discharge centrobaric characteristics of the

Keywords： substation     high-speed     discharge centrobaric     network     ultra-high frequency    

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Title Author Date Type Operation

Diversity Glass Antennas for Tri-Band WiFi Applications

Peng Fei Hu, Kwok Wa Leung, Kwai Man Luk, Yong Mei Pan, Shao Yong Zheng

Journal Article

Frequency domain a9ctive vibration control of a flexible plate based on neural networks

Jinxin LIU, Xuefeng CHEN, Zhengjia HE

Journal Article

CROP DIVERSITY AND SUSTAINABLE AGRICULTURE: MECHANISMS, DESIGNS AND APPLICATIONS

Journal Article

Fungal diversity and its mechanism of community shaping in the milieu of sanitary landfill

Journal Article

Development and testing of a wireless smart toolholder with multi-sensor fusion

Journal Article

Fundamental frequency and testing mode of complicated elastic clamped-plate vibration

QI Hongyuan, GUAN Yiduo

Journal Article

Impact of wind power generating system integration on frequency stabilization in multi-area power system

Y. K. BHATESHVAR,H. D. MATHUR,H. SIGUERDIDJANE

Journal Article

Research on Prony’s method modeling in multi-target detection of stepped-frequency radar

Hu Tiling,Li Xingguo

Journal Article

Pelagic-benthic coupling of the microbial food web modifies nutrient cycles along a cascade-dammed river

Journal Article

The μ Robust Control Design for Mobile Satellite Antennas

Li Guo,Hu Jianfei,Ji Xianzheng

Journal Article

Multi-harmonic forced vibration and resonance of simple beams to moving vehicles

Journal Article

Load shedding scheme for an interconnected hydro-thermal hybrid system with SMES

D. TYAGI, Ashwani KUMAR, Saurabh CHANANA

Journal Article

Load shedding scheme for the two-area system with linear quadratic regulator

D. TYAGI, Ashwani KUMAR, Saurabh CHANANA

Journal Article

Grassland management practices in Chinese steppes impact productivity, diversity and the relationship

Yingjun ZHANG, Wenjie LU, Hao ZHANG, Jiqiong ZHOU, Yue SHEN

Journal Article

PD pattern recognition based on multi-fractal dimension in GIS

ZHANG Xiaoxing, YAO Yao, TANG Ju, ZHOU Qian, XU Zhongrong

Journal Article