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51.
Current status of multimodel superensemble and operational NWP forecast of the Indian summer monsoon 总被引：1，自引：0，他引：1
In the last thirty years great strides have been made by large-scale operational numerical weather prediction models towards
improving skills for the medium range time-scale of 7 days. This paper illustrates the use of these current forecasts towards
the construction of a consensus multimodel forecast product called the superensemble. This procedure utilizes 120 of the recent-past
forecasts from these models to arrive at the training phase statistics. These statistics are described by roughly 107 weights. Use of these weights provides the possibility for real-time medium range forecasts with the superensemble. We show
the recent status of this procedure towards real-time forecasts for the Asian summer monsoon. The member models of our suite
include ECMWF, NCEP/EMC, JMA, NOGAPS (US Navy), BMRC, RPN (Canada) and an FSU global spectral forecast model. We show in this
paper the skill scores for day 1 through day 6 of forecasts from standard variables such as winds, temperature, 500 hPa geopotential
height, sea level pressure and precipitation. In all cases we noted that the superensemble carries a higher skill compared
to each of the member models and their ensemble mean. The skill matrices we use include the RMS errors, the anomaly correlations
and equitable threat scores. For many of these forecasts the improvements of skill for the superensemble over the best model
was found to be quite substantial. This real-time product is being provided to many interested research groups. The FSU multimodel
superensemble, in real-time, stands out for providing the least errors among all of the operational large scale models. 相似文献
52.
全国职业院校技能大赛促进高职工程测量技术专业实践教学体系构建探究 总被引：4，自引：0，他引：4
首先陈述了全国职业院校技能大赛测绘赛项的举办情况,指出技能大赛与高职院校测绘实践教学衔接不足,对全体学生测绘实践技能提高有限,应该将大赛与常规实践教学融为一体,然后从工程测量技术专业人才培养方案、两轮顶岗与"五化教学"模式、学分制教学计划、实训室开放、测量协会活动等方面阐述了工程测量实践教学的实施,将全国职业院校技能大赛机制与常规教学有机融合,做到以赛促学,以赛促教,班级、院系、学校有比赛,人人参与,共同提高,全面发展,构建了高职工程测量技术专业实践教学体系。 相似文献
53.
Maps are an increasingly used source of information and it is therefore essential to develop map skills in students. A fundamental factor affecting the choice of map skills and the way they are developed is the teacher and his/her concept of map work. Based on the results of a survey and semi-structured interviews among Czech teachers, this study identifies three basic conceptual types of teachers: “Navigators” and “Problem-Oriented” and “Source-Oriented” teachers. Similarities with teachers’ concepts of map-skill development identified in previous studies are discussed together with means of improvement. 相似文献
54.
中等职业学校测绘类技能竞赛越来越受到相关行业部门和各院校的重视,如何在竞赛中取得好成绩,主要取决于科学规范化训练。本文主要介绍了规范化训练的组成部分和注意事项,为各院校在今后的训练中提供了参考。 相似文献
55.
张新利;苟卫涛;余树影;刘军;段英 《东北测绘》2013,(5):160-162
通过对2011、2012年度注册测绘师考试的试题进行分析,结合自身的体会,总结了测绘师考试题型的特点,得出了一些应试技巧,希望能给要参加考试的广大测绘专业技术人员提供一些必要的帮助。 相似文献
56.
《The Professional geographer》2013,65(4):406-412
Conventional practices in positioning maps within books and journals and in referencing illustrations from the text tend to discourage the reader's careful examination of supporting graphics. By actively pursuing a close coordination of maps and text, both author and editor can improve the communication of geographic facts and ideas. Future developments in computer-assisted cartography will aslo promote this coordination. The professional press should reconsider dysfunctional stylistic guidelines that might inhibit authors from more completely directing the attention of their readers. 相似文献
57.
Michael Edgeworth McINTYRE 《大气科学进展》2017,34(10):1150-1158
Professor Duzheng YE's name has been familiar to me ever since my postdoctoral years at MIT with Professors Jule CHARNEY and Norman PHILLIPS, back in the late 1960 s. I had the enormous pleasure of meeting Professor YE personally in 1992 in Beijing. His concern to promote the very best science and to use it well, and his thinking on multi-level orderly human activities, reminds me not only of the communication skills we need as scientists but also of the multi-level nature of science itself. Here I want to say something(a) about what science is;(b) about why multi-level thinking—and taking more than one viewpoint—is so important for scientific as well as for other forms of understanding; and(c) about what is meant, at a deep level, by "scientific understanding" and trying to communicate it, not only with lay persons but also across professional disciplines. I hope that Professor YE would approve. 相似文献
58.
数字填图系统(RGMAP)利用PRB数据流"栈"与不同阶段数据模型的关系,创建PRB数据流"栈"与不同阶段数据模型继承和传递的技术,实现了地质图空间数据库建立的技术流程。1∶5万地质图空间数据库建立流程可分为:地质字典库→1∶2.5万野外手图库(单条路线)→1∶2.5万图幅PRB库(路线总图)→1∶2.5万实际材料图库→1∶2.5万投影到1∶5万图库→1∶5万地质图空间数据库→元数据库七个阶段。本文按建库流程,分析各阶段可能产生的质量问题,探讨不同阶段质量控制要点及相应操作技巧,从而提高数据库建立的质量与效率。 相似文献
59.
《The Journal of geography》2012,111(4):151-155
Abstract The No Child Left Behind (NCLB) legislation has resulted in declining classroom time dedicated to geography instruction, especially in grades K-8. To combat this problem, a National Geographic Society Grosvenor grant provided resources allowing 28 teacher-authors to generate a package of more than 80 lessons that combine the teaching of geography and mathematics skills tested on Arizona's state mandated testing. When taught in 113 piloting classrooms that mirror Arizona's student demographics, GeoMath lessons generated statistically significant increases in performance in math skills and improved understanding of geography standards. In addition, a fourth of the K-8 piloting teachers surveyed felt that teaching GeoMath lessons increased in their level of comfort in teaching mathematics. Given the success of this GeoMath strategy, and a prior GeoLiteracy program, we advocate here a national agenda of articulating geography curriculum to high-stakes tested subjects of reading and math. 相似文献
60.
《The Journal of geography》2012,111(6):251-260
Abstract This article is an overview of the curriculum reform in Switzerland in the 1990s. It describes the grass-roots reform process in geography education in upper secondary schools and its impact on the development of new teaching materials. These ancillary materials are based on teaching methods and strategies, the effectiveness of which are empirically shown by results. The teaching units complement the thematic and methodological aims in the national curriculum and the federal regulations and were designed through a partnership of teachers, teacher educators and scientists. They can be translated directly into the practice of teaching and are available free to teachers through the World Wide Web. 相似文献