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991.
Shih-Chun Pang Ta-Kang Yeh Jing-Shan Hong Chieh-Hung Chen 《Advances in Space Research (includes Cospar's Information Bulletin, Space Research Today)》2021,67(8):2333-2346
Because of global warming, global sea levels have risen, the frequency of drought in Taiwan is much more frequent in winter and spring, and rainfall tends to concentrate in summer. The probability of disaster-type weather has also increased significantly. Estimating precipitable water vapor (PWV) through GPS signals, related studies and analyses of weather conditions, and the effective use of meteorological forecasts have been valued by many meteorological research organizations and officials. In this study, PWV data from 2006 to 2017 and rainfall data were used for long-term harmonic analysis. PWV data calculated by ECMWF (ECMWF-PWV) and PWV data calculated by GPS (GPS-PWV) were subjected to regression analysis to verify the reliability of the GPS-PWV data. The research results show that GPS-PWV and ECMWF-PWV have extremely high correlations; however, the climatic characteristics of some regions and the high spatial resolution of GPS-PWV are able to accurately calculate the high topographic relief of small areas. It is judged that the GPS-PWV is more accurate than the ECMWF-PWV. It is worth noting that the PWV trend of the regions during the 6-year-before period has not changed very much, but the rainfall trend has changed obviously. Except for the eastern region, most of the regions show a decreasing trend year by year. More long-term observations are still needed to prove whether this phenomenon relates to global warming. Long-term rainfall analysis showed that the topography blocked water vapor to the western, southern, and mountainous regions, making them distinctly wet or dry. The harmonic curve showed great consistency with the peaks of PWV and rainfall. However, in the northern and eastern parts of the windward side, the time when maximum rainfall occurred each year may be one month later than the time when the maximum PWV value occurred each year. The reason for this difference is likely to be a decrease in the number of autumn typhoons, resulting in a nearly one-month difference in PWV peaks and rainfall peaks. Finally, we analyzed the linear trend of GPS-PWV and temperature for all regions in Taiwan, and found that annual increasing rate of GPS-PWV and temperature of all regions are within 0.4–0.5 mm/year and 0.04–0.11 C°/year, respectively. 相似文献
992.
王虹 《北华航天工业学院学报》2010,20(2)
本文通过对以英语为口译的原、译语录音资料的分析,从意义储存方式、译语的搜觅等方面发现两种译员的相同和不同之处,对于以英语为官方语的译员和以英语为外语的译员的区别,提出了新的观点。同时,借鉴个案研究的结果,将其运用于口译教学中,以提高口译教学的效果。 相似文献
993.
A.R. Qian P.F. Yang L.F. Hu W. Zhang S.M. Di Z. Wang J. Han X. Gao P. Shang 《Advances in Space Research (includes Cospar's Information Bulletin, Space Research Today)》2010
The effects of a high magnetic gradient environment (HMGE) on the cytoskeletal architecture and genes associated with the cytoskeleton in osteoblasts (MC3T3-E1 and MG-63 cells) were investigated using confocal microscopy, real-time polymerase chain reaction (PCR) and atomic force microscopy (AFM). The findings showed that, under diamagnetic levitation conditions, the architecture and average height of the cytoskeleton and surface roughness in osteoblasts were dramatically altered. HMGE affects cytoskeleton arrangement and cytoskeleton-associated gene expression. 相似文献
994.
对于飞机性能设计来讲,Altair公司的Hyper-Works是一种高效、优化、创新的技术,应对了新一代飞机设计对CAE技术提出的挑战,在A380、A350、A30X、波音787、F35等机型的设计中得到大量应用,解决了大量实际设计问题,是现代飞机性能设计的新一代平台. 相似文献
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隐私原则、责任原则、相爱原则、婚姻原则是中国传统性道德的最重要的价值取向,是中华民族优良道德传统重要的组成部分.论文通过对桂林六所高校的问卷调查表明,当今大学生对性道德的这些核心原则既有传承更有挑战,大学生中存在着性道德观念缺失的现象.为了培育大学生健康且高尚人格,高校要切实重视大学生的性道德教育问题,采用有效措施重建大学生性道德观念. 相似文献
998.
基于Spacewire的实时分布式中断系统设计 总被引:1,自引:0,他引:1
本文介绍了Spacewire总线的基本特征、协议组成、电气特性和一般使用方法,基于通过Spacewire同时进行数据传输和实时控制的目的,给出了一种基于Spacewire的实时分布式中断系统设计方法,并对典型的总线传输延时特性进行了简要分析.结论适用于航天器控制系统的设计过程. 相似文献
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