唤俊在武汉开上巡演了

改革开放四十多年来，中国的科技馆事业正在稳步向前发展。文章以武汉市为例，总结了武汉市的地域文化特色，分析了在地域文化视野下的科技馆教育资源的建构与整合的可行性与对策。

A new scheme for all-optical AND gate and NOR gate based on simultaneous four-wave mixing (FWM) and cross-gain modulation (XGM) in a semiconductor fiber ring laser (SFRL) is proposed, and a comprehensive broad-band dynamic model of this kind of all-optical logic gates is presented. By numerical simulation, the effects of the input signal peak power and the coupling of the couplers in SFRL on the output performances of the logic gates are analyzed.

This is a basic work on the inverse scattering transform that constructs the complete orthonormal system of the free Jost solution. In order to establish the system for the DNLS equation, we introduce a new transform for the spectral parameter and a gauge transform. The Marchenko's equation and the Zakharov-Shabat's equation of inverse scattering are derived based on the new spectral parameter.

On the basis of impulse approximate method, an analytical wavefuction based on a potential model was used to calculate the l-mixing transition cross section of Rydberg state Na atom in thermal collision with He, Ne and Ar, the results for Na-He are better than that of other methods ever used.

Temperature dependence of magnetoresistance in the range of 2—300K and the Δρ /ρ０-B relation at 2K were measured in quasi-two dimensional charge- density wave compound (PO2)4(WO3)2m( m=6). The enhancement of the magnetoresistance at low temperatures was analyzed by use of the magnetic breakdown model. The first Peierls energy gap in the char ge-density wave states was estimated to be about 3.0meV.