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A systematic approach in load disaggregation utilizing a multi-stage classification algorithm for consumer electrical appliances classification

Chuan Choong YANG, Chit Siang SOH, Vooi Voon YAP

Frontiers in Energy 2019, Volume 13, Issue 2,   Pages 386-398 doi: 10.1007/s11708-017-0497-z

Abstract: In this study, load disaggregation is performed through voltage and current waveform, known as the -trajectory.The classification algorithm performs cropping and image pyramid reduction of the - trajectory plotThe novelty of this paper is to establish a systematic approach of load disaggregation through - trajectory-based

Keywords： load disaggregation     voltage-current (<i>Vi>-<i>Ii>) trajectory     multi-stage classification algorithm     principal component analysis (PCA)     <i>ki>-nearest neighbor (<i>ki>-NN)    

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Development and advances in modular multilevel converter based HVDC projects in China

Frontiers of Engineering Management   Pages 183-189 doi: 10.1007/s42524-022-0248-7

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Keywords： high voltage direct current     power converter     power systems     renewable energy     ultra-high voltage    

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Processing of high-precision ceramic balls with a spiral V-groove plate

Ming FENG,Yongbo WU,Julong YUAN,Zhao PING

Frontiers of Mechanical Engineering 2017, Volume 12, Issue 1,   Pages 132-142 doi: 10.1007/s11465-017-0436-z

Abstract: In this study, a spiral V-groove plate method is employed in processing high-precision ceramic balls.Experimental results demonstrate that the novel spiral V-groove plate method performs better than theconventional concentric V-groove plate method in terms of roundness, surface roughness, diameter difference

Keywords： bearing     ceramic ball     spiral V-groove     kinematic analysis     trajectory    

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Accounting for the uncertainties in the estimation of average shear wave velocity using – correlations

Frontiers of Structural and Civil Engineering 2021, Volume 15, Issue 5,   Pages 1199-1208 doi: 10.1007/s11709-021-0749-1

Abstract: Shear wave velocity ( <i>Vi> S) is a key parameter in such analysis, although the economyVarious <i>Vi> S–SPT– <i>Ni> correlations are routinely incorporated in seismic hazardanalysis to estimate the value of <i>Vi> S.The scattering nature of the <i>Vi> S values estimated using different <i>Vi> SVi> S30 using general and soil-specific correlations.

Keywords： uncertainties     <i>Vi> S– <i>Ni> correlations     <i>Vi> S30     SPT data     statistical    

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Research of an Interleaved Low-Voltage/High-Current DC-DC Converter

Wang Ping,Sun Xu,Song Liangyu

Strategic Study of CAE 2005, Volume 7, Issue 4,   Pages 59-63

Abstract: high-performance microprocessors were lower than that of the previous ones and the research of low-voltage/high-current DC-DC converter was enhanced.Among all topologies, the current-doublers topology is optional.In the current-doublers topology, the ripple current of the output filter capacitor is reduced becausethat a few of current-doublers are interleaved.

Keywords： low-voltage/high-current DC-DC converter     current-doublers     interleaved    

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Experimental study of pollution effect on the behavior of high voltage insulators under alternative current

Hani BENGUESMIA, Nassima M’ZIOU, Ahmed BOUBAKEUR

Frontiers in Energy 2021, Volume 15, Issue 1,   Pages 213-221 doi: 10.1007/s11708-017-0479-1

Abstract: paper, the impact of the conductivity and the distribution of pollution on the behavior of the high voltagedifferent conductivities for a discontinuous distribution of the pollution on the insulator under an AC voltageFurthermore, the influence of the pollution on the flashover voltage and the leakage current is studied

Keywords： 1512L insulator     circular model     artificial pollution     flashover     leakage current     discontinuous pollution     high voltage    

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Elasto-plastic fatigue crack growth analysis of plane problems in the presence of flaws using XFEM

SHEDBALE,I. V. SINGH,B. K. MISHRA

Frontiers of Structural and Civil Engineering 2015, Volume 9, Issue 4,   Pages 420-440 doi: 10.1007/s11709-015-0305-y

Abstract: The -integral for two fracture modes (mode-I and mode-II) is obtained by decomposing the displacement

Keywords： XFEM     von-Mises yield criterion     isotropic hardening     fatigue crack growth     <i>Ji>-integral    

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power quality conditioner based on a three-level NPC inverter using fuzzy control techniques for all voltage

Salim CHENNAI,M-T BENCHOUIA

Frontiers in Energy 2014, Volume 8, Issue 2,   Pages 221-239 doi: 10.1007/s11708-014-0317-7

Abstract: The proposed UPQC is capable of mitigating source current harmonics and compensate all voltage disturbancessuch as voltage sags, swells, unbalances and harmonics.The DC voltage is maintained constant using proportional integral voltage controller.performances of the proposed UPQC system are evaluated in terms of power factor correction, mitigation of voltageor current harmonics and all other voltage disturbances compensation using Matlab-Simulink software

Keywords： three-level neutral point clamped (NPC) inverter     unified power quality conditioner (UPQC)     current harmonicsmitigation     fuzzy logic controller     voltage disturbance compensation     shunt active filter     series active    

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Role of Akkermansia muciniphila in the development of nonalcoholic fatty liver disease: current knowledge

Frontiers of Medicine 2022, Volume 16, Issue 5,   Pages 667-685 doi: 10.1007/s11684-022-0960-z

Abstract: <i>Akkermansia muciniphilai> (<i>A. muciniphilai>) is a next-generation probiotic that has been reportedEmerging evidence indicates the therapeutic potential of <i>A. muciniphilai> for NAFLD, especiallyHere, the current knowledge on the role of <i>A. muciniphilai> in the progression of NAFLD was summarized<i>A. muciniphilai> abundancy is decreased in animals and humans with NAFLD.The modulation mechanisms by which <i>A. muciniphilai> acts to improve hepatic inflammation are mainly

Keywords： <i>Akkermansia muciniphilai>     NAFLD     NASH     steatosis     inflammation    

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Novel method for the preparation of Cs-containing FAU(Y) catalysts for aniline methylation

Shaposhnik, Marina V. Belova, Boris A. Kolozhvari, Irina I. Ivanova

Frontiers of Chemical Science and Engineering 2018, Volume 12, Issue 1,   Pages 70-76 doi: 10.1007/s11705-017-1694-3

Abstract: Cs-containing FAU(Y)-type zeolite catalysts were prepared by conventional and novel ion exchange procedures followed by incipient wetness impregnation with CsOH. The novel ion exchange procedure involved hydrothermal treatment of NaY zeolite in aqueous solution of CsCl at 140–200 °C for 6–24 h. The samples were characterized by low-temperature nitrogen adsorption, X-ray fluorescence analysis, X-ray powder diffraction, scanning electron microscopy, Na, Al and Cs magic angle spinning nuclear magnetic resonance, CO and NH -Temperature programmed desorption. The results show that hydrothermal treatment at 200 °C allows to obtain higher degrees of ion-exchange (up to 83%) with respect to conventional method giving maximum 66%–69%. Catalytic properties of Cs-containing FAU(Y) were studied in aniline methylation. The yield of -methylaniline is shown to correlate with catalyst’s basicity. The best catalyst performance was achieved over the catalyst with the highest ion-exchange degree impregnated with CsOH. The selectivity to -methylaniline over this catalyst reached 96.4%.

Keywords： FAU(Y) zeolite     ion exchange with cesium     aniline alkylation     <i>Ni>-methylaniline    

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Series transformer based diode-bridge-type solid state fault current limiter

Amir HEIDARY,Hamid RADMANESH,Seyed Hamid FATHI,G. B. GHAREHPETIAN

Frontiers of Information Technology & Electronic Engineering 2015, Volume 16, Issue 9,   Pages 769-784 doi: 10.1631/FITEE.1400428

Abstract: We propose a novel series transformer based diode-bridge-type solid state fault current limiter (SSFCLBased on this RLC branch, two current limiting modes are created.Then, by controlling the magnitude of the DC reactor current, the fault current is reduced and the voltageconnected in parallel with the IGBT, serves as a snubber circuit for decreasing the transient recovery voltageThe proposed SSFCL can limit the fault current without any delay and successfully smooth the fault current

Keywords： Solid state fault current limiter (SSFCL)     Power quality     Voltage sag     Point of common coupling (PCC)    

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Mechanisms of connective tissue formation and blocks of mitogen activated protein kinase

Irina A SHURYGINA, Michael G SHURYGIN, Nataliya I AYUSHINOVA, Galina B GRANINA, Nikolay V ZELENIN

Frontiers of Chemical Science and Engineering 2012, Volume 6, Issue 2,   Pages 232-237 doi: 10.1007/s11705-012-1286-1

Abstract: Ninety male Wistar rats were selected under the “Guide for the Care and Use of Laboratory Animals” for skin-muscle wound models. Three groups of animals were examined respectively for inoculation of inhibitor of p38 MAPK (mitogen activated protein kinase) SB 203580 and JNK inhibitor SP 600125, and a control. Light microscopy, immunohistochemistry, and tensometry revealed that the inhibition of p38 or JNK cascades have modified the formation of the connective tissue scar. The degree of connective tissue growth in the area of surgical wound had been significantly reduced by the end of observation (30 d) as the SB 203580 was applied (% volume of collagen 43.60 (41.05 – 60.15) 73.54 (66.87 – 78.01) in control, = 0.002). Conversely, when we have applied the JNK blocker, the density of collagen in scar tissue increased (78.14 (72.77 – 81.14), = 0.022 control). SB203580 inhibits the expression of p38, c-Jun and c-Fos. When we have used the JNK blocker, the expression of c-Fos and c-Jun decreased, but the expression of p38 increased. This determines the high functional activity of fibroblasts after using SP 600125. Obtained results show the importance of studying regulators of cell differentiation as potential drugs, which significantly affect the outcome of the pathological processes.

Keywords： connective tissue     mitogen activated protein kinase (MAPK)     p38     JNK    

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Etiology of invasive candidosis agents in Russia: a multicenter epidemiological survey

N.V. Vasilyeva, E.R. Raush, M.V. Rudneva, T.S. Bogomolova, A.E.

Frontiers of Medicine 2018, Volume 12, Issue 1,   Pages 84-91 doi: 10.1007/s11684-017-0612-x

Abstract: six major species, namely, <i>C. albicansi> (43.2%), <i>C. parapsilosisi> (20.2%), <i>C. glabratai> (11.5%), <i>C. tropicalisi> (9.6%), <i>C. kruseii>2014) (<i>Pi>=0.01) whereas that of non-<i>C. albicansi> increased from 47.62% (2012) to 67.21%(2014) (<i>Pi><0.01).Results indicated a shift from <i>C. albicansi> to non-<i>C. albicansi>.

Keywords： prevalence     <i>&Scy     andidai> species     invasive candidosis     nosocomial     etiology     MALDI-TOF mass-spectrometry    

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Fatigue crack growth simulations of 3-D linear elastic cracks under thermal load by XFEM

Himanshu PATHAK,Akhilendra SINGH,I.V. SINGH,S. K. YADAV

Frontiers of Structural and Civil Engineering 2015, Volume 9, Issue 4,   Pages 359-382 doi: 10.1007/s11709-015-0304-z

Abstract: This paper deals with the fatigue crack growth simulations of three-dimensional linear elastic cracks by XFEM under cyclic thermal load. Both temperature and displacement approximations are extrinsically enriched by Heaviside and crack front enrichment functions. Crack growth is modelled by successive linear extensions, and the end points of these linear extensions are joined by cubic spline segments to obtain a modified crack front. Different crack geometries such as planer, non-planer and arbitrary spline shape cracks are simulated under thermal shock, adiabatic and isothermal loads to reveal the sturdiness and versatility of the XFEM approach.

Keywords： 3-D cracks     fatigue life     Paris law     thermal load     XFEM    

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Research and Application of V/F-based Intelligent Multiplex Data-collecting System & Serial Communication

Jia Guixi,Li Hongfeng,Qi Wei

Strategic Study of CAE 2004, Volume 6, Issue 11,   Pages 58-62

Abstract: It uses AD620 amplifier to magnify signals, LM331 voltage-frequency transformer to transform electricity

Keywords： voltage-frequency transformer LM331     Visual Basic6.0     serial communication    

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Title Author Date Type Operation

A systematic approach in load disaggregation utilizing a multi-stage classification algorithm for consumer electrical appliances classification

Chuan Choong YANG, Chit Siang SOH, Vooi Voon YAP

Journal Article

Development and advances in modular multilevel converter based HVDC projects in China

Journal Article

Processing of high-precision ceramic balls with a spiral V-groove plate

Ming FENG,Yongbo WU,Julong YUAN,Zhao PING

Journal Article

Accounting for the uncertainties in the estimation of average shear wave velocity using – correlations

Journal Article

Research of an Interleaved Low-Voltage/High-Current DC-DC Converter

Wang Ping,Sun Xu,Song Liangyu

Journal Article

Experimental study of pollution effect on the behavior of high voltage insulators under alternative current

Hani BENGUESMIA, Nassima M’ZIOU, Ahmed BOUBAKEUR

Journal Article

Elasto-plastic fatigue crack growth analysis of plane problems in the presence of flaws using XFEM

SHEDBALE,I. V. SINGH,B. K. MISHRA

Journal Article

power quality conditioner based on a three-level NPC inverter using fuzzy control techniques for all voltage

Salim CHENNAI,M-T BENCHOUIA

Journal Article

Role of Akkermansia muciniphila in the development of nonalcoholic fatty liver disease: current knowledge

Journal Article

Novel method for the preparation of Cs-containing FAU(Y) catalysts for aniline methylation

Shaposhnik, Marina V. Belova, Boris A. Kolozhvari, Irina I. Ivanova

Journal Article

Series transformer based diode-bridge-type solid state fault current limiter

Amir HEIDARY,Hamid RADMANESH,Seyed Hamid FATHI,G. B. GHAREHPETIAN

Journal Article

Mechanisms of connective tissue formation and blocks of mitogen activated protein kinase

Irina A SHURYGINA, Michael G SHURYGIN, Nataliya I AYUSHINOVA, Galina B GRANINA, Nikolay V ZELENIN

Journal Article

Etiology of invasive candidosis agents in Russia: a multicenter epidemiological survey

N.V. Vasilyeva, E.R. Raush, M.V. Rudneva, T.S. Bogomolova, A.E.

Journal Article

Fatigue crack growth simulations of 3-D linear elastic cracks under thermal load by XFEM

Himanshu PATHAK,Akhilendra SINGH,I.V. SINGH,S. K. YADAV

Journal Article

Research and Application of V/F-based Intelligent Multiplex Data-collecting System & Serial Communication

Jia Guixi,Li Hongfeng,Qi Wei

Journal Article