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Influence of envelope insulation materials on building energy consumption

Junlan YANG, Jiabao TANG

Frontiers in Energy 2017, Volume 11, Issue 4,   Pages 575-581 doi: 10.1007/s11708-017-0473-7

Abstract: the three insulation materials show a verse order at a certain heat transfer coefficient of the base envelopeThe EPTS is 10, 19 and 21 years, respectively when the heat transfer coefficient of the base envelope

Keywords： building envelope     insulation materials     energy consumption     payback time    

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A subband excitation substitute based scheme for narrowband speech watermarking Article

Wei LIU, Ai-qun HU

Frontiers of Information Technology & Electronic Engineering 2017, Volume 18, Issue 5,   Pages 627-643 doi: 10.1631/FITEE.1601503

Abstract: We propose a new narrowband speech watermarking scheme by replacing part of the speech with a scaled and spectrally shaped hidden signal. Theoretically, it is proved that if a small amount of host speech is modified, then not only an ideal channel model for hidden communication can be established, but also high imperceptibility and good intelligibility can be achieved. Furthermore, a practical system implementation is proposed. At the embedder, the power normalization criterion is first imposed on a passband watermark signal by forcing its power level to be the same as the original passband excitation of the cover speech, and a synthesis filter is then used to spectrally shape the scaled watermark signal. At the extractor, a bandpass filter is first used to get rid of the out-of-band signal, and an analysis filter is then employed to compensate for the distortion introduced by the synthesis filter. Experimental results show that the data rate is as high as 400 bits/s with better bandwidth efficiency, and good imperceptibility is achieved. Moreover, this method is robust against various attacks existing in real applications.

Keywords： Linear prediction     Narrowband speech watermarking     Passband excitation replacement     Power normalization     Spectralenvelope shaping     Synthesis filter    

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Applying Rational Envelope curves for skinning purposes

Kinga Kruppa,kruppa.kinga@inf.unideb.hu

Frontiers of Information Technology & Electronic Engineering 2021, Volume 22, Issue 2,   Pages 141-286 doi: 10.1631/FITEE.1900377

Abstract: Special curves in the Minkowski space such as Minkowski Pythagorean hodograph curves play an important role in computer-aided geometric design, and their usages are thoroughly studied in recent years. Bizzarri et al. (2016) introduced the class of Rational (RE) curves, and an method for Hermite data was presented, where the resulting RE curve yielded a rational boundary for the represented domain. We now propose a new application area for RE curves: of a discrete set of input s. We show that if we do not choose the Hermite data correctly for , then the resulting RE curves are not suitable for . We introduce a novel approach so that the obtained curves touch each at previously defined points of contact. Thus, we overcome those problematic scenarios in which the location of touching points would not be appropriate for purposes. A significant advantage of our proposed method lies in the efficiency of trimming offsets of boundaries, which is highly beneficial in computer numerical control machining.

Keywords： Medial axis transform     Envelope     Interpolation     Skinning     Circle    

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Applying the spectral stochastic finite element method in multiple-random field RC structures

Abbas YAZDANI

Frontiers of Structural and Civil Engineering 2022, Volume 16, Issue 4,   Pages 434-447 doi: 10.1007/s11709-022-0820-6

Abstract: This paper uses the spectral stochastic finite element method (SSFEM) for analyzing reinforced concrete

Keywords： uncertainty     spectral stochastic finite element method     correlation length     reliability assessment     reinforced    

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Service Life Supervision for Individual Aircraft Structural System Based on Aircraft Structural Life Envelope

He Yuting

Strategic Study of CAE 2006, Volume 8, Issue 6,   Pages 23-27

Abstract:

Based on the analysis of the aircraft structural life envelope (ASLE) under the baseline operationalconditions, an approach of establishment of aircraft structural life envelope (ASLE) under nonbaseline

Keywords： aircraft structure     life envelope     service life supervision     time between overhauls    

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Fault feature extraction of planet gear in wind turbine gearbox based on spectral kurtosis and time wavelet

Yun KONG, Tianyang WANG, Zheng LI, Fulei CHU

Frontiers of Mechanical Engineering 2017, Volume 12, Issue 3,   Pages 406-419 doi: 10.1007/s11465-017-0419-0

Abstract: the fault feature of planet gear effectively, we propose a novel feature extraction method based on spectralFirstly, the spectral kurtosis (SK) and kurtogram of raw vibration signals are computed and exploited

Keywords： wind turbine     planet gear fault     feature extraction     spectral kurtosis     time wavelet energy spectrum    

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A rate-dependent Prandtl-Ishlinskii model for piezoelectric actuators using the dynamic envelope function

Meiju YANG,Chunxia LI,Guoying GU,Limin ZHU

Frontiers of Mechanical Engineering 2015, Volume 10, Issue 1,   Pages 37-42 doi: 10.1007/s11465-015-0326-1

Abstract: The new model is based on a modified rate-dependent play operator, in which a dynamic envelope function

Keywords： piezoelectric actuators     hysteresis     Prandtl-Ishlinskii     rate-dependent    

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An ANN-exhaustive-listing method for optimization of multiple building shapes and envelope properties

Yaolin LIN, Wei YANG

Frontiers in Energy 2021, Volume 15, Issue 2,   Pages 550-563 doi: 10.1007/s11708-019-0607-1

Abstract: innovative ANN (artificial neural network)-exhaustive-listing method to optimize the building shapes and envelope

Keywords： ANN (artificial neural network)     exhaustive-listing     building shape     optimization     thermal load     thermal comfort    

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A Miniature Meta-Optical System for Reconfigurable Wide-Angle Imaging and Polarization-Spectral Detection

Fei Zhang,Minghao Liao,Mingbo Pu,Yinghui Guo,Lianwei Chen,Xiong Li,Qiong He,Tongtong Kang,Xiaoliang Ma,Yuan Ke,Xiangang Luo,

Engineering doi: 10.1016/j.eng.2023.07.008

Abstract: Wide-angle imaging and spectral detection play vital roles in tasks such as target tracking, object classificationproof-of-concept demonstration, the simultaneous implementation of wide-angle imaging and polarization-spectralThe proposed system supports the imaging (spectral) resolution of approximately 27.8 line-pairs per millimeter(lp·mm−1; ∼80 nm) for an imaging (spectral) mode from 8 to 14 μm.

Keywords： Metasurfaces     Reconfigurable     Imaging     Spectral    

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Nongray radiation from gas and soot mixtures in planar plates based on statistical narrow-band spectral

Huaqiang CHU, Qiang CHENG, Huaichun ZHOU, Fengshan LIU

Frontiers in Energy 2011, Volume 5, Issue 2,   Pages 149-158 doi: 10.1007/s11708-010-0124-8

Abstract: Based on the statistical narrow-band (SNB) spectral model with an exponential-tailed inverse intensity

Keywords： soot     combustion     SNB model     nongray radiation    

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Application of spectral technology in flame measurement

Jiaxun LIU, Xiaoshu CAI, Zenghao ZHU, Huinan YANG

Frontiers in Energy 2014, Volume 8, Issue 1,   Pages 138-143 doi: 10.1007/s11708-013-0283-5

Abstract: Spectral technology has become an important detection method due to its advantages such as non-intrusiveIn this paper, two applications of spectral technology in thermal detection were proposed.

Keywords： spectrum     emissivity measurement     component of fuel     near-infrared spectrometer    

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Spectral characteristics of plant communities from salt marshes: A case study from Chongming Dongtan,

ZHANG Liquan, GAO Zhanguo, Armitage Richard, Kent Martin

Frontiers of Environmental Science & Engineering 2008, Volume 2, Issue 2,   Pages 187-197 doi: 10.1007/s11783-008-0004-1

Abstract: The spectral reflectance of recently formed salt marshes at the mouth of the Yangtze River, which areSpectral data were processed concerning reflectance, and the averaged reflectance values for each samplewere re-analysed to correspond to a 12-waveband bandset of the Compact Airborne Spectral Imager.The spectral data were summarised using principal components analysis (PCA) and the relationships betweenthe vegetation composition, and the PCA axes of spectral data were examined.

Keywords： Spectral     multi-seasonal hyperspectral     invasive     JR     re-analysed    

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Spectral element modeling based structure piezoelectric impedance computation and damage identification

Zhigang GUO, Zhi SUN

Frontiers of Structural and Civil Engineering 2011, Volume 5, Issue 4,   Pages 458-464 doi: 10.1007/s11709-011-0133-7

Abstract: The numerical model is set up using the spectral element method, which is promised to be of high numerical

Keywords： PZT     piezoelectric impedance     optimization     spectral element     damage identification    

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Development of surface reconstruction algorithms for optical interferometric measurement

Dongxu WU, Fengzhou FANG

Frontiers of Mechanical Engineering 2021, Volume 16, Issue 1,   Pages 1-31 doi: 10.1007/s11465-020-0602-6

Abstract: Optical interferometry is a powerful tool for measuring and characterizing areal surface topography in precision manufacturing. A variety of instruments based on optical interferometry have been developed to meet the measurement needs in various applications, but the existing techniques are simply not enough to meet the ever-increasing requirements in terms of accuracy, speed, robustness, and dynamic range, especially in on-line or on-machine conditions. This paper provides an in-depth perspective of surface topography reconstruction for optical interferometric measurements. Principles, configurations, and applications of typical optical interferometers with different capabilities and limitations are presented. Theoretical background and recent advances of fringe analysis algorithms, including coherence peak sensing and phase-shifting algorithm, are summarized. The new developments in measurement accuracy and repeatability, noise resistance, self-calibration ability, and computational efficiency are discussed. This paper also presents the new challenges that optical interferometry techniques are facing in surface topography measurement. To address these challenges, advanced techniques in image stitching, on-machine measurement, intelligent sampling, parallel computing, and deep learning are explored to improve the functional performance of optical interferometry in future manufacturing metrology.

Keywords： surface topography     measurement     optical interferometry     coherence envelope     phase-shifting algorithm    

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Technology of Measurement and Control by Welding Arc Spectral Information and Its Application

Li Junyue,Yang Yunqiang,Li Huan,Zhang Xiaonan,Yang Lijun

Strategic Study of CAE 2001, Volume 3, Issue 7,   Pages 21-29

Abstract:

Welding arc is full of spectral information.situation of the research on this field, expounded the principle of measurement and control by welding arc spectralinformation, described the application situation of welding arc spectral information, for example, theAt the same time, the authors have also introduced the application of arc spectral information in the

Keywords： spectral information     welding arc     plasma     diagnosis     automation    

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Title Author Date Type Operation

Influence of envelope insulation materials on building energy consumption

Junlan YANG, Jiabao TANG

Journal Article

A subband excitation substitute based scheme for narrowband speech watermarking

Wei LIU, Ai-qun HU

Journal Article

Applying Rational Envelope curves for skinning purposes

Kinga Kruppa,kruppa.kinga@inf.unideb.hu

Journal Article

Applying the spectral stochastic finite element method in multiple-random field RC structures

Abbas YAZDANI

Journal Article

Service Life Supervision for Individual Aircraft Structural System Based on Aircraft Structural Life Envelope

He Yuting

Journal Article

Fault feature extraction of planet gear in wind turbine gearbox based on spectral kurtosis and time wavelet

Yun KONG, Tianyang WANG, Zheng LI, Fulei CHU

Journal Article

A rate-dependent Prandtl-Ishlinskii model for piezoelectric actuators using the dynamic envelope function

Meiju YANG,Chunxia LI,Guoying GU,Limin ZHU

Journal Article

An ANN-exhaustive-listing method for optimization of multiple building shapes and envelope properties

Yaolin LIN, Wei YANG

Journal Article

A Miniature Meta-Optical System for Reconfigurable Wide-Angle Imaging and Polarization-Spectral Detection

Fei Zhang,Minghao Liao,Mingbo Pu,Yinghui Guo,Lianwei Chen,Xiong Li,Qiong He,Tongtong Kang,Xiaoliang Ma,Yuan Ke,Xiangang Luo,

Journal Article

Nongray radiation from gas and soot mixtures in planar plates based on statistical narrow-band spectral

Huaqiang CHU, Qiang CHENG, Huaichun ZHOU, Fengshan LIU

Journal Article

Application of spectral technology in flame measurement

Jiaxun LIU, Xiaoshu CAI, Zenghao ZHU, Huinan YANG

Journal Article

Spectral characteristics of plant communities from salt marshes: A case study from Chongming Dongtan,

ZHANG Liquan, GAO Zhanguo, Armitage Richard, Kent Martin

Journal Article

Spectral element modeling based structure piezoelectric impedance computation and damage identification

Zhigang GUO, Zhi SUN

Journal Article

Development of surface reconstruction algorithms for optical interferometric measurement

Dongxu WU, Fengzhou FANG

Journal Article

Technology of Measurement and Control by Welding Arc Spectral Information and Its Application

Li Junyue,Yang Yunqiang,Li Huan,Zhang Xiaonan,Yang Lijun

Journal Article