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This study presents a subaperture stitching method to calibrate system errors of several ∼2  m large scale 3D profile measurement instruments (PMIs). The calibration process was carried out by measuring a Φ460  mm standard flat sample multiple times at different sites of the PMI with a length gauge; then the subaperture data were stitched together using a(More)
To meet the special demands in small-scale discontinuous optical surface fabrication, the integrated magnetorheological jet polishing (IMJP) tool with multiple motion degrees is introduced in this paper. Four jetting models are implemented and investigated by means of the IMJP tool for practical manufacture. To ensure steady jetting in a long distance,(More)
It analyzes the non-linear term structure of interest rates of Treasury in Shanghai Stock Exchange, using two-factor Vasicek model and Kalman filter in the state-space framework. The observation errors of one-year and 20-year interest rates are extracted and estimated applying the Archimedean copulas and mixture copula by maximum likelihood estimation. It(More)
It firstly analyzes effects of price shocks in ECX CER spot market and futures markets applying VAR model and Impulse Response Analysis. The results are found that price shocks of CER spot price with Cholesky one standard deviation innovations to itself and futures prices of Dec09 CER, Dec10 CER, Dec11 CER and Dec12 CER show high positive effects while(More)
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