Analysis and pre-development of an imaging spectrometer for in-situ cometary soil analysis on-board the esa rosetta mission

The CIVA-M instrument, a highly integrated infrared/visible microscope for the Rosetta mission (ESA — 2003) is presented. It will enable scientists to study in great detail the composition of the Wirtanen Comet: minerals, organic compounds and ices. A monochromator will illuminate a cometary sample, drilled from the comet sub-surface (≈40cm). An infrared detector will give an image of the sample for each wavelength, from 1 to 4μm with a spectral resolution of 6nm and a spatial resolution of 50 μm. In order to analyze accurately spectra a signal to noise ratio of 50 is needed (for ALBEDO = 0.04). We will use a 128×128 elements photovoltaic mercury cadmium telluride bi-dimensional array working at intermediate temperature (110K to 150K), from the French company SOFRADIR. At such relatively high temperature the critical parameter is the dark current: it limits the exposure time, preventing a high signal to noise ratio. I am in charge of the electronic board, which is the interface between the detector and the on-board processor. Some preliminary results obtained with this board, on a test detector, are then discussed.     

关于我院学生公寓管理运行模式的几点思考

摘 要 高等院校学生公寓的改革已全面展开，后勤社会化的趋势不可改变。鉴于长期以来学生公寓做为学校工作的部分已经根深蒂固，如何适应形势发展需要，迅速转变角色，从而更好的为学校育人服务是当前高校学生公寓面临的重要课题。本文作者依据长期工作的经验和当前形势发展的变化对当前公寓厂作的现状。主要问题及今后工作的对策，进行了初步的分析和探讨，以供同仁们参考与借鉴。     

民航空管专业学生心理健康指导研究

通过对中国民航空管不安全事件的统计特征分析,以及对空管人员执业素质要求的分析,探讨了影响中国民航空管人员执业素质的基本心理要素,并结合空管专业学生的实际情况,根据空管职业对从业人员心理品质的要求,探索对空管专业学生进行心理健康指导的途径与方法.