Resource Type

Journal Article 198

Conference Videos 1

Year

2023 17

2022 11

2021 12

2020 9

2019 5

2018 14

2017 16

2016 5

2015 7

2014 12

2013 13

2012 9

2011 4

2010 3

2009 11

2008 13

2007 13

2006 7

2005 3

2004 3

open ︾

Keywords

frequency 9

natural frequency 3

Algebraic Method (AGM) 2

Compressed sensing 2

Deep learning 2

Multiple-input multiple-output 2

dynamics 2

finite element method 2

frequency response 2

sliding mode control 2

ALK fusion 1

FAK6/7 1

H∞ control 1

AC excited 1

AC-DC-pulse width modulation (PWM) converter 1

AF (atrial fibrillation) 1

AQAM 1

Acoustic localization 1

Active gate drive 1

open ︾

Search scope:

排序： Display mode:

Frequency-controlable sine signal based on PWM and its implementation on FPGA

Lianzhen HUANG, Jiangang LI, Dongjun ZHANG

Frontiers of Mechanical Engineering 2012, Volume 7, Issue 3,   Pages 322-328 doi: 10.1007/s11465-012-0312-9

Abstract: generation method that the different frequent sine signals can be generated by the different Pulse-Width Modulation

Keywords： Pulse-Width Modulation (PWM)     Field-Programmable Gate Array (FPGA)     frequency controllable    

HTML PDF Collect

Analysis and design of pulse frequency modulation dielectric barrier discharge for low power applications

Tang-tang GUO,Xing-liang LIU,Shi-qiang HAO,Chi ZHANG,Xiang-ning HE

Frontiers of Information Technology & Electronic Engineering 2015, Volume 16, Issue 3,   Pages 249-258 doi: 10.1631/FITEE.1400185

Abstract: first harmonic approximation (RCFHA) is applied to linearize the equivalent load circuit of DBD at low frequencyload circuit, the influence of transformer parasitic capacitance on the key parameters, including the frequencyrange and the applied electrode voltage, is discussed when the power is regulated with pulse frequencymodulation (PFM).

Keywords： Dielectric barrier discharge     Rectifier-compensated first harmonic approximation     Parasitic capacitance     Power converter design    

HTML PDF Collect

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    

HTML PDF Collect

Stepped frequency chirp signal imaging radar jamming using two-dimensional nonperiodic phase modulation Research Article

Qihua WU, Feng ZHAO, Tiehua ZHAO, Xiaobin LIU, Junjie WANG, Shunping XIAO

Frontiers of Information Technology & Electronic Engineering 2023, Volume 24, Issue 3,   Pages 433-446 doi: 10.1631/FITEE.2200298

Abstract: Then, the influence of different modulation parameters, such as the code width and duty ratio, are further

Keywords： Radar jamming     Stepped frequency chirp signal     Nonperiodic phase modulation     Wideband radar    

HTML PDF Collect

High efficiency spreading spectrum modulation based on double orthogonal complex sequences

Shi Xiaohong

Strategic Study of CAE 2012, Volume 14, Issue 3,   Pages 108-112

Abstract:

This paper presents a kind of high efficiency spreading spectrum modulation

Keywords： modulation and demodulation     high efficiency spreading spectrum modulation     forward phase correction    

HTML PDF Collect

A driving pulse edge modulation technique and its complex programming logic devices implementation

Xiao CHEN,Dong-chang QU,Yong GUO,Guo-zhu CHEN

Frontiers of Information Technology & Electronic Engineering 2015, Volume 16, Issue 12,   Pages 1088-1098 doi: 10.1631/FITEE.1500111

Abstract: This paper describes a new technique of driving pulse edge modulation for insulated gate bipolar transistors

Keywords： Driving pulse edge modulation     Switching voltage spike     Complex programmable logic device (CPLD)     Active    

HTML PDF Collect

Cannabidiol prevents depressive-like behaviors through the modulation of neural stem cell differentiation

Frontiers of Medicine 2022, Volume 16, Issue 2,   Pages 227-239 doi: 10.1007/s11684-021-0896-8

Abstract: prevented rNSCs overactivation and differentiation into astrocyte, which was partly mediated by the modulation

Keywords： cannabidiol     depression     radial neural stem cells     neurogenesis    

HTML PDF Collect

Modulation of Gut Microbiota in Pathological States

Yulan Wang, Baohong Wang, Junfang Wu, Xiangyang Jiang, Huiru Tang, Ole H. Nielsen

Engineering 2017, Volume 3, Issue 1,   Pages 83-89 doi: 10.1016/J.ENG.2017.01.013

Abstract:

The human microbiota is an aggregate of microorganisms residing in the human body, mostly in the gastrointestinal tract (GIT). Our gut microbiota evolves with us and plays a pivotal role in human health and disease. In recent years, the microbiota has gained increasing attention due to its impact on host metabolism, physiology, and immune system development, but also because the perturbation of the microbiota may result in a number of diseases. The gut microbiota may be linked to malignancies such as gastric cancer and colorectal cancer. It may also be linked to disorders such as nonalcoholic fatty liver disease (NAFLD); obesity and diabetes, which are characterized as “lifestyle diseases” of the industrialized world; coronary heart disease; and neurological disorders. Although the revolution in molecular technologies has provided us with the necessary tools to study the gut microbiota more accurately, we need to elucidate the relationships between the gut microbiota and several human pathologies more precisely, as understanding the impact that the microbiota plays in various diseases is fundamental for the development of novel therapeutic strategies. Therefore, the aim of this review is to provide the reader with an updated overview of the importance of the gut microbiota for human health and the potential to manipulate gut microbial composition for purposes such as the treatment of antibiotic-resistant Clostridium difficile (C. difficile) infections. The concept of altering the gut community by microbial intervention in an effort to improve health is currently in its infancy. However, the therapeutic implications appear to be very great. Thus, the removal of harmful organisms and the enrichment of beneficial microbes may protect our health, and such efforts will pave the way for the development of more rational treatment options in the future.

Keywords： Gut microbes     Diseases     Microbial modulation    

HTML PDF Collect

A frequency error estimation for isogeometric analysis of Kirchhoff–Love cylindrical shells

Frontiers of Structural and Civil Engineering doi: 10.1007/s11709-023-0006-x

Abstract: A frequency error estimation is presented for the isogeometric free vibration analysis of Kirchhoff–LoveBy analyzing the discrete isogeometric equations with the aid of harmonic wave assumption, the frequencyIn particular, the governing relationship of the continuum frequency for Kirchhoff–Love cylindrical shellsis naturally embedded into the frequency error measures without the need of explicit frequency expressionsNumerical results not only thoroughly verify the theoretical convergence rates of frequency solutions

Keywords： isogeometric analysis     Kirchhoff–Love cylindrical shell     free vibration     frequency error     convergence    

HTML PDF Collect

Dynamic modulation performance of ferroelectric liquid crystal polarization rotators and Mueller matrix

Song ZHANG, Lelun WANG, Anze YI, Honggang GU, Xiuguo CHEN, Hao JIANG, Shiyuan LIU

Frontiers of Mechanical Engineering 2020, Volume 15, Issue 2,   Pages 256-264 doi: 10.1007/s11465-019-0573-7

Abstract: polarization rotator (FLCPR) has been widely used in polarization measurement due to its fast and stable modulationThe accurate characterization of the modulation performance of FLCPR directly affects the measurementaccuracy of the instrument based on liquid crystal modulation.Strong linear and weak circular birefringence are observed during modulation processes, and all the opticalThe designed polarimeter combines the advantages of the high modulation frequency of FLCPR and the ultrahigh

Keywords： ferroelectric liquid crystal polarization rotator (FLCPR)     dual liquid crystal Mueller matrix polarizer     design and optimization    

HTML PDF Collect

Calculation of collision frequency function for aerosol particles in free molecule regime in presence

Xiaowei LUO, Yannick BENICHOU, Suyuan YU

Frontiers in Energy 2013, Volume 7, Issue 4,   Pages 506-510 doi: 10.1007/s11708-013-0275-5

Abstract: The collision frequency function for aerosol particles has already been calculated for the free moleculeforce, electric force and molecular forces, created by particles themselves, recalculated the collision frequencyAttractive forces increase naturally the collision frequency, while repulsive forces decrease it.

Keywords： aerosol particles     collision frequency function     coagulation    

HTML PDF Collect

Insight into the role of cholesterol in modulation of morphology and mechanical properties of CHO-K1

Lei Zhang, Lisha Zhao, Ping-Kai Ouyang, Pu Chen

Frontiers of Chemical Science and Engineering 2019, Volume 13, Issue 1,   Pages 98-107 doi: 10.1007/s11705-018-1775-y

Abstract:

Cholesterol plays a significant role in the organization of lipids and modulation of membrane dynamics

Keywords： cholesterol     methyl-β-cyclodextrin     atomic force microscopy     Young’s modulus     CHO-K1 cell    

HTML PDF Collect

Fuel variability effect on flickering frequency of diffusion flames

Jizhao LI, Yang ZHANG

Frontiers in Energy 2009, Volume 3, Issue 2,   Pages 134-140 doi: 10.1007/s11708-009-0034-9

Abstract: The intent of this study is to investigate the fuel variability on the flickering frequency of diffusionIt was found that the low frequency oscillation of flow and flame structures depended only weakly onWhen a mixture of methane/propane at a ratio of 1:1 was used the peak flickering frequency was aroundMechanisms thought to produce changes in the dynamic response and frequency harmonics were discussed.

Keywords： fuel variability     flickering frequency     diffusion flames     dynamics of combustion    

HTML PDF Collect

Capacity limitation of nuclear units in grid based on analysis of frequency regulation

Yiping DAI, Pan JIANG, Lin GAO, Weimin KAN, Xiaoqing XIAO, Ge JIN

Frontiers in Energy 2012, Volume 6, Issue 2,   Pages 148-154 doi: 10.1007/s11708-012-0174-1

Abstract: Based on the analysis of frequency regulation, mathematic models for nuclear units in the grid are establishedThe relationship between different styles of frequency regulation and the allowable capacity of the nuclear

Keywords： nuclear units capacity     overspeed     primary frequency control (PFC)     second frequency control (SFC)    

HTML PDF Collect

Oscillation frequency of simplified arterial tubes

Hui AN, Fan HE, Lingxia XING, Xiaoyang LI

Frontiers of Mechanical Engineering 2009, Volume 4, Issue 3,   Pages 300-304 doi: 10.1007/s11465-009-0038-5

Abstract: To construct the spatial kinetic equation of an arterial tube and obtain its radial natural frequencyThe results show that the first-order frequency is 15.8 Hz and the obtained exact analytical solutions

Keywords： spatial kinematics     natural frequency     finite element method    

HTML PDF Collect

Title Author Date Type Operation

Frequency-controlable sine signal based on PWM and its implementation on FPGA

Lianzhen HUANG, Jiangang LI, Dongjun ZHANG

Journal Article

Analysis and design of pulse frequency modulation dielectric barrier discharge for low power applications

Tang-tang GUO,Xing-liang LIU,Shi-qiang HAO,Chi ZHANG,Xiang-ning HE

Journal Article

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

Journal Article

Stepped frequency chirp signal imaging radar jamming using two-dimensional nonperiodic phase modulation

Qihua WU, Feng ZHAO, Tiehua ZHAO, Xiaobin LIU, Junjie WANG, Shunping XIAO

Journal Article

High efficiency spreading spectrum modulation based on double orthogonal complex sequences

Shi Xiaohong

Journal Article

A driving pulse edge modulation technique and its complex programming logic devices implementation

Xiao CHEN,Dong-chang QU,Yong GUO,Guo-zhu CHEN

Journal Article

Cannabidiol prevents depressive-like behaviors through the modulation of neural stem cell differentiation

Journal Article

Modulation of Gut Microbiota in Pathological States

Yulan Wang, Baohong Wang, Junfang Wu, Xiangyang Jiang, Huiru Tang, Ole H. Nielsen

Journal Article

A frequency error estimation for isogeometric analysis of Kirchhoff–Love cylindrical shells

Journal Article

Dynamic modulation performance of ferroelectric liquid crystal polarization rotators and Mueller matrix

Song ZHANG, Lelun WANG, Anze YI, Honggang GU, Xiuguo CHEN, Hao JIANG, Shiyuan LIU

Journal Article

Calculation of collision frequency function for aerosol particles in free molecule regime in presence

Xiaowei LUO, Yannick BENICHOU, Suyuan YU

Journal Article

Insight into the role of cholesterol in modulation of morphology and mechanical properties of CHO-K1

Lei Zhang, Lisha Zhao, Ping-Kai Ouyang, Pu Chen

Journal Article

Fuel variability effect on flickering frequency of diffusion flames

Jizhao LI, Yang ZHANG

Journal Article

Capacity limitation of nuclear units in grid based on analysis of frequency regulation

Yiping DAI, Pan JIANG, Lin GAO, Weimin KAN, Xiaoqing XIAO, Ge JIN

Journal Article

Oscillation frequency of simplified arterial tubes

Hui AN, Fan HE, Lingxia XING, Xiaoyang LI

Journal Article