广西天气预报视频会商系统网管软件的操作及常见问题诊断

简要介绍广西天气预报视频会商系统中心控制平台的基本操作方法,并针对在业务运行中出现的常见故障,进行原因分析,并找出解决方法。     

智慧海洋国际共享应用平台发展趋势及其对策建议

当前,我国正在全面开展智慧海洋建设,各种新研发观测平台不断涌现,但是围绕智慧海洋的信息化建设仍显落后,在数据管理、质量控制方法和系统开发等方面与发达国家仍存在较大差距。文章通过分析国内外海洋共享应用平台的发展趋势及其特点,从数据管理方法、质量控制和系统设计开发等多个方面找出差距所在。研究表明,与国外相比,国内存在共享平台业务化运行不多的问题,为实现数据的规范化,并给出尽快制定针对不同观测平台数据管理规范、加强数据质量控制方法研究、加强具备专业知识的系统设计人才培养等建议。     

The Effects of Quality Control on Decreasing Error Propagation in the LandScan USA Population Distribution Model: A Case Study of Philadelphia County

LandScan USA is a 90 m population distribution model that is used for a variety of applications, including emergency management. Models should have a measure of accuracy; however, the accuracy of population distribution models is difficult to determine due to the inclusion of multiple input datasets and the lack of quantifiable, observable (validated) data to confirm model output. Validated data enables quantification of: (1) overall model accuracy and (2) changes in model output at different levels of quality control. This article examines the effect of quality control for two national school datasets incorporated as input in LandScan USA for Philadelphia County, Pennsylvania; which had a local, validated school dataset available. The effect of each stage of quality control efforts utilized throughout the LandScan USA process were assessed to determine what level of quality control was required to have a statistically significant change of the model's population distribution. The typical level of quality control for LandScan USA resulted in 36% of schools being moved to the correct location and 20% of missing student enrollments were found, compared to 87% and 98% respectively for the validated dataset. The costs of increasing quality control resulted in a six-fold increase in labor time; however, the additional quality control did not produce statistically significant improvements in the LandScan USA model. Thus, typical quality control efforts for schools in LandScan USA produced a population distribution similar to the validated level of quality control, and can be applied with confidence for policy, planning, and emergency situations.     

Risk perception,crop protection and plant disease in the UK wheat sector

While plant diseases have been the subject of scientific research, little is known about the perceptions of key actors towards plant disease risk within specific food sectors. Drawing on concepts of risk and uncertainty, and using in-depth interviews, this paper examines the ways in which endemic plant disease risks in the UK wheat sector are perceived and managed by key ‘upstream’ and ‘downstream’ businesses, as well as by farmers and agronomists. A majority of interviewees feel that plant disease is a controllable risk and one that rests mainly at the point of production (i.e. with farmers) within the wheat sector. This assumed ‘control’ is based mainly around the availability of plant protection products (e.g. fungicides) which reduce the sense of risk attributable to outbreaks of plant disease. As a consequence, there can be a tendency to grow higher-yielding wheat varieties that are less disease-resistant. The potential banning of certain fungicides under EU legislation and climate change are perceived future threats that could increase uncertainty and change the balance between ‘control’ and ‘resistance’, the latter through the use of more disease-resistant wheat varieties. Further research is needed on the perceived impacts of plant diseases and on how different wheat sector actors will contribute to the future control of plant diseases and the development of more integrated systems of plant disease management.     

峨眉山大火成岩省对四川盆地油气储层的控制作用研究

四川盆地具有演化历史长、沉积盖层厚度大、油气资源丰富等特点,是我国大型含油气盆地之一。上扬子地区中、晚二叠世之间的峨眉山地幔柱活动改变了四川盆地古地理格局,造成地壳的快速抬升,盆地西南地区地壳抬升幅度最大,呈现古剥蚀高地,往北东方向的影响逐渐减弱,从而导致沉积环境自西南向北东由单一的海相依次转变为陆相、海陆过渡相至海相沉积。本文讨论了峨眉山大火成岩省的形成过程及对四川盆地油气储层的影响,认为峨眉山大火成岩省对四川盆地油气储层的影响主要体现在两个阶段、3种影响作用方式。两个阶段是指中二叠世末期和晚二叠世—早三叠世时期。3种方式是指峨眉山地幔柱导致的地壳抬升对下伏中二叠统灰岩储层的改造作用,表现为地幔柱核心区(大理—永仁)中二叠世地层发育风化壳岩溶型储层;峨眉山大火成岩省的火山喷发旋回对火山岩储层的空间发育的控制作用,发育了火山岩储层;峨眉山地幔柱活动控制的晚二叠世盆地构造格架对上覆沉积储层的控制作用,导致了峨眉山地幔柱外围伸展区(川东北—西北)发育海槽,控制了晚二叠世礁滩相沉积的发育等。峨眉山大火成岩省的形成过程不仅形成了优质的火山岩储层,同时也影响了沉积岩相的空间分布、改造了下伏碳酸盐岩的孔隙特征,进而控制了四川盆地的油气储层。     

利用IRS-P5立体像对快速提取地震灾区震后DEM

针对地震灾区震后DEM数据获取困难的问题,总结出一种较传统方法更加快速便捷的实现途径。利用易测E640GPS接收机和MobileMapper手持接收机采集GPS卫星数据,并对GPS数据进行后差分处理得到控制点坐标,以这些控制点作为IRS-P5立体像对的地面控制点,并根据IRS-P5立体像对生成最终的DEM数据。本文使用这种方法成功获取了控制点并在Envi软件中使用IRS-P5立体像对生成DEM,并对DEM进行精度评价。     

FJCORS的构建及其在控制测量中的应用

具有实时定位服务功能的连续运行卫星定位服务系统（CORS）是当代GPS发展的热点之一。从系统组成、技术指标等方面详细介绍了FJCORS,并给出了一种应用FJCORS和区域大地水准面新型控制测量方法。     

云南云县邦东铜铅矿找矿前景分析

云县邦东矿区铜铅矿体产于响水—邦东背斜南部倾没端、轴部断裂F1的旁侧,次级构造的交互部位是矿体的富集中心。F1是矿区的主要含矿和导矿构造,严格控制着矿床的展布,该断裂带及旁侧是下步工作的重要找矿靶区。     

羊拉铜矿区岩石力学模拟与采场结构参数确定

采用三维弹塑性有限元程序3D-σ对羊拉铜矿的岩石力学进行模拟,并据此提出采场结构参数,对羊拉铜矿开采具有较好指导作用。     

索尔库都克-哈腊苏铜钼金多金属矿集区成矿规律

总结矿集区不同矿种、不同成因类型矿床的基本特征,研究矿床成矿规律,认为成矿集中在海西期,矿床形成先后顺序从早到晚为依次为:乔夏哈拉铁铜金矿、哈腊苏铜金(钼)矿、希勒库都克铜钼矿、沙尔布拉克金矿、喀拉通克铜镍矿、索尔库都克铜钼矿。且具有成带分布、分段集中,地层、构造、岩体控矿,张裂成矿的特点。