In this paper, according to difference of the characteristics of the existing structure from design structure, the authors defined fortification intensity of the existing construction during succeeding use. It aims at...In this paper, according to difference of the characteristics of the existing structure from design structure, the authors defined fortification intensity of the existing construction during succeeding use. It aims at the enhancement of antiseismic administration in city reconstruction at present. Some decision methods (Method of equal intensity, method of equal probability of exceedance, method of equal occurrence ratio) for fortification intensity in succeeding use period of existing construction were provided to meet higher levels of seismic fortification criterion and changing use of buildings. With earthquake risk analysis, it is useful for discussion on antiseismic endurance of construction.展开更多
A novel method of linear demodulation based on edge filter is presented. An experimental system is built up in which LPG is used as the edge filter. We achieve linear demodulation with a bandwidth of 5nm.
Properties of symmetrical layers as matching layers in multilayer thin film design were analyzed. A calculation method was presented to derive parameters of desired equivalent refractive index. A harmonic beam splitte...Properties of symmetrical layers as matching layers in multilayer thin film design were analyzed. A calculation method was presented to derive parameters of desired equivalent refractive index. A harmonic beam splitter was designed and fabricated to test this matching method. OCIS codes： 230.1360, 220.0220, 310.6860.展开更多
基金The Contract Subject Supported by the Science and Technology Bureau of Zhejiang Province (Contract No. 2003C33035).
文摘In this paper, according to difference of the characteristics of the existing structure from design structure, the authors defined fortification intensity of the existing construction during succeeding use. It aims at the enhancement of antiseismic administration in city reconstruction at present. Some decision methods (Method of equal intensity, method of equal probability of exceedance, method of equal occurrence ratio) for fortification intensity in succeeding use period of existing construction were provided to meet higher levels of seismic fortification criterion and changing use of buildings. With earthquake risk analysis, it is useful for discussion on antiseismic endurance of construction.
基金Supported by the National '863' high technology project (2002 AA313110)
文摘A novel method of linear demodulation based on edge filter is presented. An experimental system is built up in which LPG is used as the edge filter. We achieve linear demodulation with a bandwidth of 5nm.
文摘Properties of symmetrical layers as matching layers in multilayer thin film design were analyzed. A calculation method was presented to derive parameters of desired equivalent refractive index. A harmonic beam splitter was designed and fabricated to test this matching method. OCIS codes： 230.1360, 220.0220, 310.6860.
