Zhonghua Liu

Shanxi Academy of Building Research

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Jiexin Pu

Henan University of Science and Technology

Yong Fang

Beijing University of Chemical Technology

Chunlei Yang

Henan University of Science and Technology

Zhong Jin

Nanjing University of Science and Technology

Juyun Wang

Communication University of China

Yongsheng Dong

Henan University of Science and Technology

Qilong Wang

Nanjing Institute of Technology

Guo-Sen Xie

Nanjing University of Science and Technology

Ruixue Fan

Beijing University of Chemical Technology

Yu Hua

Shanghai Institute of Pollution Control and Ecological Security

Cooperative Institutions

Chinese Academy of Sciences

Tongji University

Nanjing Agricultural University

Sun Yat-sen University

Xi'an Jiaotong University

University of Chinese Academy of Sciences

Shanghai Pulmonary Hospital

Northeastern University

Tsinghua University

Beijing University of Chemical Technology

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Mode competition and squeezing

Acta Optica Sinica (1988)

Zhonghua Liu

Double stimulation will cause the field to approach its initial coherent state and make its squeezing weak. There is deeper squeezing in the case of a three level cascade atom excited by one-mode field.

Mode (computer interface)

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Matching demodulation transform with applications to feature extraction of rotor rub-impact fault

2022 IEEE International Instrumentation and Measurement Technology Conference (I2MTC) (2013)

Shibin Wang Guoying Li Xuefeng Chen Yi Xia Zhonghua Liu

Conventional time-frequency representation (TFR) methods have played an important role in characterizing the time-frequency (TF) pattern of the nonstationary signal. In this paper, a new TFR algorithm, called matching demodulation transform (MDT), is introduced to extract the feature of highly oscillating frequency modulation for rotor rub-impact fault. When the early rub-impact fault occurs in the rotor system, the vibration signals will present frequency modulation feature because of the periodic rub-impact between the stator and the rotor. Through an iterative demodulation procedure, the highly oscillating frequency modulation feature is represented with satisfactory energy concentration in TF plane. The validity of the technique is then demonstrated on a real rotor system of a gas turbine with rub-impact fault. The analysis result of this application shows that the MDT method is powerful in the analysis of frequency modulation signals and is an effective tool for the feature extraction of rub-impact faults.

Modulation (music)

Feature (linguistics)

10.1109/i2mtc.2013.6555705

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Skew correction and segmentation method for OMR images

Jisuanji gongcheng (2005)

Zhonghua Liu

A skew angle detection approach using Hough transform was proposed for OMR images. The proposed method doesn't need to identify exact position of locating marks and can bear high noise. In order to avoid heavy computing of Hough transform, a low-resolution image was created by sampling OMR image. Also, a fast iteration algorithm based on run-length center for written marks segmentation was presented. Experiment results show that the algorithm can achieve skew correction and segmentation of OMR image efficiently and accurately.

Hough Transform

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Measurement of Commercial Credit and Accounting Treatment

Aluminium Fabrication (2010)

Zhonghua Liu

The measurement of goodwill is analyzed from the examples.The nature of goodwill and accounting treatment of goodwill and badwill are analyzed as well.The shortcomings are found out and advice and opinion are put forward.

Goodwill

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Salient object detection in complex scenes via D-S evidence theory based region classification

The Visual Computer (2016)

Chunlei Yang Jiexin Pu Yongsheng Dong Zhonghua Liu Lingfei Liang

10.1007/s00371-016-1288-y

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A Comment on the Strengthening Methods of Copper-based Alloys

Zhonghua Liu

The development process of copper-based alloys is briefly reviewed. The main methods on strenthening copper-based alloys are commented. It is indicated that MA is a kind of potential methods on strengthening copper-based alloys according to the results that MA is commented minutely.

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Keyhole image processing of variable polarity plasma arc welding based on wavelet transform

Chinese Journal of Mechanical Engineering (2001)

Zhonghua Liu

Keyhole

Polarity (international relations)

Plasma arc welding

10.3901/cjme.2001.01.062

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Correlation Between Constitution in Chinese Medicine and Bone Stiffness Index of Calcaneum in Changfeng Community of Shanghai

Journal of Clinical Densitometry (2012)

Zhonghua Liu Xia Wu Yi Hu Ling Shi

10.1016/j.jocd.2012.08.018

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Numerical study of the effect of reflection grism pair in the case of non-parallel surfaces

Optik (2013)

Juan Su Bin Tang Zhonghua Liu

Grism

Reflection

Constant (computer programming)

10.1016/j.ijleo.2013.06.088

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An Approach to LCC Simplification in Design Alternatives Evaluation of Navy Vessel during Early Stages

Peng Yu Jianwei Lv Zhonghua Liu Jianjun Yang

The characteristics of the navy vessel's Alternatives evaluation and the basic indexes composition of the evaluation system are analyzed, and the difficulty of calculating navy vessel's LCC accurately during early stages is pointed out. It analyzes the synthesis and calculation process, and makes an assumption that measuring the LCC of navy vessel with substitution indexes. Then, it makes a systematic analysis on the bottom attributes' measurement indexes of the navy vessel LCC's components, and provides the measurement indexes that can reflect LCC's characteristics, and discusses the approach of standardizing the indexes and determining its weight. At last, an example is given to illustrate the approach's feasibility of evaluating the alternatives during early stages.

Naval architecture

10.1109/icmss.2010.5577441

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Citations (2)