SMOOTHING AND CURVE-FITTING OF THE MEASURED DATA OF PLANE CAM PROFILE

The necessary continuity of the second order derivative or curvature of the cam profile has been analyzed. In order to guarantee the smoothness of the cam radius data, a proper method with which it could be possible to revise directly the first and the second order difference coefficients as well as the slope has been proposed. This method, applicable to different cam mechanisms by using a unified formula of correction, possesses the characteristics of simplicity, intuition and precision. Meanwhile, a cubic spline function for fitting the cam profile has also been described.     

EFFECTS OF DEPOSITION PARAMETERS ON SPECTRAL TRANSMISSION OF MgF2／SiO ANTIREFLECTIVE COATING

In this paper, the effects of evaporating temperature and film thickness on the spectral transmission of MgF2/SiO antireflective coating were investigated.     

THE SECOND LAW ANALYSIS OF GLOBAL IRRADIANCE BASED ON OBSERVED SPECTRAL DISTRIBUTIONS

There have emerged ample literature about the Second Law analysis of extraterrestrial and terrestrial solar radiation consequent to the pioneer works by R. Petela and D. C. Spanner, of which most are irrelevant to the frequency distribution of solar radiation. Since the Second Law analysis was introduced to the fields like photovoltaic and photosynthesis, rendering a need for a method closely related to solar radiation spectrum, some authors created wavelength dependent dilute factots to take the various influence of atmosphere on the frequency distribution into consideration. Because of the complexity of the influence on different frequency, it is not convenient and accurate enough to practically apply the present exergy theories of diluted solar radiation to real solar exergy systems at the surface of the earth. This paper shows a numerical method of Second Law analysis in dealing with the cases of diluted solar irradiance on the earth, based on the observed spectra of global direct and diffuse radiat     

FISSION TRACK DATA OF APATITE AND ZIRCON FROM LOWER YANGTZE AREA

Ｆｉｓｓｉｏｎｔｒａｃｋａｎａｌｙｓｉｓｈａｓｂｅｅｎａｎａｖａｉｌａｂｌｅｍｅｔｈｏｄｔｏｌｅａｒｎｔｅｃｔｏｎｉｃｔｈｅｒｍａｌｅｖｏｌｕｔｉｏｎａｎｄｇｅｏｔｈｅｒｍａｌｈｉｓｔｏｒｙ[14],ａｎｄｉｔｐｒｏｖｉｄｅｓｓｏｍｅｉｎｆｏｒｍａｔｉｏ?..