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随着计算机软硬件的飞速发展及网络的迅速普及,科学计算中的数据量呈现爆炸式增长。大数据可视化已经成为科学计算中的重要研究内容之一。本文介绍了大数据的定义,阐述了可视化分析领域及科学计算中大数据可视化的重要意义;分析和讨论了传统的科学计算可视化研究方法,以研究数据场的类型为标准,对算法和技术进行了分类阐述;分析了大数据背景下,传统的科学计算可视化方法的不足,进而介绍了基于GPU环境的科学计算中大数据可视化的并行计算和绘制方法;最后结合本课题组在科学计算中针对大数据可视化领域取得的主要理论和应用成果,给出了大数据环境下的科学计算可视化进一步的发展及研究方向。 相似文献
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大科学装置具有附加的经济社会效益。通过对兰州重离子医用加速器产业化及应用示范基地、武威重离子治疗示范中心暨荣华颐养院、武威重离子辐照诱变甜高粱种植基地的实地调研,分析得出:兰州重离子加速器在实现重要的科学目标的同时,以重离子医用加速器产业和甜高粱种植产业等新兴产业驱动西部地区的经济发展与转型,以医疗、教育和人才培养方面的贡献带动西部地区的社会发展。兰州重离子加速器已经初步形成了以重离子医用加速器产业和甜高粱产业为代表的新兴产业链,形成经济发展的新增长极,在优化西部地区产业结构、促进区域经济和社会可持续发展方面发挥出强大的辐射效应。 相似文献
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The large-scale construction projects have significant impact on regional development, so the rational evaluation theory and methodology become the key factors on deciding whether the large construction project is feasible or not. However, the related theoretical and empirical research is still very weak, and the analysis and evaluation tends to have a certain degree of subjectivity and arbitrariness. Based on the characteristics of the role of large construction projects on regional development, as well as the objectives and requirements of the project decision-making, we establish a local closed input-output model to analyze the regional economic impact of large construction projects, in order to increase the specification and rationality of the quantitative impact measurement, such as economic growth, industrial structure, employment and urbanization, and improve the scientific nature of decision-making. The Baihetan hydropower station construction project is selected as case study of empirical research. We prepare the comparable local closed-type input-output tables of Sichuan and Yunnan provinces and use the local closed input-output model to analyze and estimate the economic impact of large construction projects on regional economic development. Studies have shown that Baihetan hydropower station construction have positive role and significant impact on the economic development of construction area of Sichuan and Yunnan provinces, such as promoting regional economic growth, accelerating the process of industrialization and ur-banization, the expanding employment opportunities, optimizing the industrial structure and so on. 相似文献
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南水北调西线工程涉及青藏高原三江源头和藏族聚居区,地质生态脆弱,民族宗教敏感,调水水源不可靠,西线工程不可行,不易行.近年来,黄河泥沙锐减,水权转换试点和节水成效初显.南水北调东线中线竣工,西线调水途径拓宽,西线工程不必行,不应行.调水思路:调整“八七分水”方案,调整西线取水位置,保水节水以增加黄河水源,推进水权置换和节水行动,上中下游统筹,黄河、长江两全,高水高用,量水而行,转变发展方式,建设健康河流. 相似文献