The department maintains close liaison with the consultants appointed by government and supplies the required data or analysis . the observatory will generally provide comments on prevailing and extreme wind conditions , hydrometeorology of the study areas , sea waves and storm surge conditions 天文台会与政府委任之顾问保持紧密联络并给予所需资料和分析结果，包括提供有关盛行风及极端风力情况、受研究地区之水文气象条件、海浪及风暴潮情况等意见。
Although many achievements were obtained during recent years , researching areas and contents are still limited and uncompleted and there is a debate about jurassic stratigraphic framework and sedimentary environments in yanshiping area and its southern places . during early jurassic the palaeo - oceanographical changes was an event influencing global geologic evolution 随着近年来石油地质调查和区域地质的开展，羌塘盆地侏罗系地层研究取得了长足的进展，但从研究地区和研究内容都是一些轮廓性的认识，对一些关键地质问题尚缺乏深入的了解。
The calculation results show that the method designed is quite satisfactory . the models can reproduce the annual precipitation sequence and monthly precipitation sequence . and then the regional aridity index can be estimated statistically , in addition , they can reproduce the characteristic of history precipitation series 这两类模型分别用于生成模拟年降雨量序列和月降雨量序列作为地区干旱指标序列，从而对所研究地区干旱特征量的统计特性进行估计，并对已发生的地区干旱的重现期进行识别。
By integrating gis , social and economic statistical and field investigating data , taking wudinghe river watershed as the case study area , we discussed the driving mechanisms for the watershed land use change and the relationship between land use spatial distribution pattern and soil erosion at different scales . the results as follows : 1 本文以无定河流域为典型研究地区，借助地理信息系统( gis )技术，结合社会经济统计资料和实地调查的数据，探讨无定河流域土地利用变化的驱动机制和流域内不同尺度土地利用类型空间分布格局与水土流失的关系，初步结论如下： 1
The area in question has great conservation value as following aspects : the population of butterfly shows great species abundance ; the heterogeneity of habitat revealed by the presence of multi - subspecies and multi - morphological species provides animals a steady habitat ; the faunal character and vertical distribution of butterflies show great value of ecological study ; the mid - mountain 8002600 ? m that has better environmental condition and less human disturbance is a typical 秦岭对东洋种的阻隔作用大于对古北种的作用。中山地带8002600m即暖温带落叶阔叶林和中山针阔叶混交林带环境状况良好，气候条件优越，受人为干扰少，因而物种丰富多样性较大。研究地区具有很高的保护价值。
Therefore , high risk behavor research is a very meanningful research topic when aiming to predict the epidemic trend in china . results 1 . among drug users in treatment centers of gansu , high - risk behaviors of taking by individuals are largely determined by institutional structure of the society 在甘肃戒毒所的被调查吸毒群体中，如同在其它一些国内外的被研究地区，决定个人行为危险与否的原因在很大程度上存在于整个社会的制度结构（ institutionalstructure ）层面上。
The objective of this institute is to train well - prepared people for the country since the relations between r . o . c . and latin american nations has been getting closer and closer over these past years . we provide our ma candidates with intensive study and research in the field of latin american studies , including latin american history , philosophy , politics , international relations , economy , social issues as well as training in diplomatic and trade affairs 在校方的鼓励下，本所已建立研究生在毕业前必须赴海外或研究地区进行短期研习的制度，为了开拓学生的视野，已在2001年寒假期间组成二十人的学术访问团，赴北京中国社科院拉丁美洲研究所举行学术研讨会，并由研究生发表论文； 2002年暑期由所长率研究生出访中美洲姐妹校及研究机构。
And understanding and studying the spectral features and variation rules of geo - targets in the experimental area , raising that it is the basis of geo - targets information collection with imaging spectrometer data to understand spectral features and variation rules of geo - targets , realizing that in a great extent spectral - integrated - form - based classification method can remove the phenomenon of " different spectrum with same objects " resulted from reflection ratio curve translation because of the angle change among sensor , targets and observation direction , and the average and variance images can be introduced to solve the problem of two kinds of geo - target with similar spectral forms and much different values of whole reflection ratio . it is suggested that " red edge " range bands of vegetation , which has close relationship with vegetation cover and biomass , is the main characteristic bands and important basis for careful vegetation classification and quantitative retrieval , and pixel - based derivative spectral analysis is very useful for removing the effects of soil background values and quantitatively retrieving vegetation biomass and cover . the remote sense quantitative retrieval model is developed for main appraisable factors of desertification monitoring assessment with imaging spectrometer data and then the applicability of model is analyzed 研究结果如下：首先针对荒漠化地区的地物特征，对高光谱数据不同波段的数据质量、波段组合进行了评价，提出了适用于荒漠化监测的基本波段选择集；初步了解和掌握了研究地区的地物光谱特性及变异规律，进一步明确了掌握地物光谱特征和变异规律是用成像光谱仪数据提取地物信息的基础；发现了基于光谱整体形状的分类方法在很大程度上能够消除由于传感器、地物目标观测方向之间的角度变化引起的反射率曲线整体平移的“同物异谱”现象，对于谱形相似而整体反射率的值相差较大的两类地物，通过引入均值和方差图像参与分类得到解决；研究还表明在植被“红边”范围内的波段是进行荒漠化监测的主要特征波段，这些波段与植被生物量和盖度都有密切的关系，是开展精细植被分类研究和植被定量反演的重要基础；像元的导数光谱分析可以消除土壤背景的影响，是进行植被生物量和盖度定量反演的有力工具；建立了荒漠化监测主要评价因子的定量反演模型，并分析了模型的适用性。
