Application of ICTs in Airspace Management and Collaborative Decision-Making—Analyzing the Risk Avoidance in the Condition of Risky Weather as an Example

The application of ICTs makes structural change of the development and effective utilization of airspace. Next generation air transportation system (NextGen) includes new automation concepts with automated information to support the traffic control decision-making. As a result, in the field of academia and industry, air traffic controllers integrate information automatically while making decisions to change the previous manually integrated and decided pattern. The safety ability of airspace is reduced and airspace system is endangered under risky weather conditions of airspace. So there is an urgent demand for new information and communication technologies. The paper is an overview of the information constitution and support of NextGen and provides the study of the development of technique of airspace collaborative decision-makings to confirm the new features based on ICTs. It contains basic application-the input of data and output of the routes of airspace management and collaborative decision-making, and general application-the choose of probability nets of avoiding risky weather, and special application-the affection in the management of the air routes, which are made up of position and direction. The research shows the accurate schedule characteristics of airspace management and collaborative decision-making based on ICTs, which made the space accurate by time accurate. Second, the visualization of airspace management and collaborative decision-making based on ICTs made the maps of flight path under mobile data quickly generated. This could make the fully development and utilization of national airspace, ensure safety, and reduce air traffic controllers’ workload and the costs in delaying and operating in risky weather.     

钻井岩心定向或岩石露头定向样品的古地磁数据处理程序

本程序适用的范围很广,包括钻井岩心采样,岩石露头采样.坐标系则包括样品坐标,层面坐标与地理坐标.处理内容则包括逐步退磁结果数据表;退磁曲线;正交矢量图,赤平极射投影及其放大图.     

中国住宅出让地价发育特征及其影响因素分析

基于中国土地市场网2009~2013年招、拍、挂出让的住宅用地数据,以县级行政区域作为研究单元,建立区域住宅地价综合模型,选取地价水平、地价增长率和交易宗数作为评价指标,采用Ward系统聚类法,综合分析了中国住宅出让地价的发育特征,利用多分类Logistic回归模型探索了各类地价发育形态的潜在影响因素。结果表明：① 研究期内中国住宅出让地价总体呈现东高西低、沿海高于内陆、城市群带动周边区域发展、城市群内部围绕中心城市增长等空间格局特征;中西部地价高增长的单元多于东部,西北、东北中南部、四川盆地、河西走廊以及长江中下游地区是地价高增长的聚集区;住宅市场活跃度呈阶梯状变化,活跃度较高的地区主要分布在山东半岛、长三角、长江中游、辽宁中部、哈尔滨、成渝、滇中、呼包鄂等城市群。② 根据综合特征,中国住宅出让地价空间发育可分为成熟稳健型、发展完善型、成长发展型、萌芽起步型和成长受阻型5类,相邻发育形态在空间关系上表现出互为邻里的特征。③ 各类发育区的主要影响因素差异显著。区位条件、居民收入和财政收入是地价发育成熟度的主要影响因素;人均GDP、国土开发度提升将促进地价形态发育程度;而人口吸引力不足、基础设施建设相对滞后等将导致地价形态发育受阻。     

光栅Bragg地震检波器的传感特性研究(英文)

针对目前石油地震勘探的瓶颈—检波器性能差的问题,设计了一种新型光纤Bragg光栅（FBG）地震检波器,阐述了其工作原理,并从理论上给出了检波器的响应函数等参数。由于FBG的传感优势,这种新型地震检波器动态范围可达94dB,灵敏度高,重量轻,造价低,是理想的新一代地震勘探信号采集单元。     

龙卷风的风强分析与极值推断

本文采用1955－1997年影响盐城市的龙卷风资料,按富士达F等级定义龙卷风风强分类级别,对盐城市受袭击点的破坏程度进行风强分级,并分析各个时段龙卷风风强等级的频数。应用耿贝尔极值分布理论,对影响盐城市的龙卷风风速极值进行统计推断,获得1％风险度龙卷风风速极值,以及各种特定重视期间的极值。     

Predictor Selection for CNN-based Statistical Downscaling of Monthly Precipitation

Convolutional neural networks(CNNs) have been widely studied and found to obtain favorable results in statistical downscaling to derive high-resolution climate variables from large-scale coarse general circulation models(GCMs).However, there is a lack of research exploring the predictor selection for CNN modeling. This paper presents an effective and efficient greedy elimination algorithm to address this problem. The algorithm has three main steps: predictor importance attribution, predictor rem...     

Design Method,Application and Time Alternative Mechanism of Flexible Use of Airspace

The flexible use of airspace and its practice are the key components of next generation air transportation system and the important technical support of reconstructing the national airspace in Europe, Japan and other countries. On the basis of overview and comprehensive cognition of the generation, implementation and aims of flexible use of airspace, the design methods of sector’s boundary changes were evaluated. Then, from the perspective of “sector-closed”, the effect on sector boundary changes was evaluated, and the time alternative mechanism in flexible use of airspace was revealed. The research shows that “Algorithm+Manual Dynamic Boundary Change” can be a method for better distribution and balancing the unbalanced traffic demand across regions, which will also promote the airspace development and capacity release. The flexible use of airspace based on ICTs realizes the replacement of the factor of space by the factor of time, which enhances the flexibility of airspace configuration and the changing of air routes to the maximun extent. The methods and applications of flexible use of airspace will be not only beneficial to establishing the whole national airspace system and utilization, but also to promoting geography research on airspace resources development and the studies on connection between air and land.     

机载三线阵传感器ADS40的几何检校

ADS40为集成POS系统的机载三线阵数字航摄仪.分析ADS40相机独特的POS系统辅助传感器几何关系,介绍基于BROWN模型的利用附加参数的自检校法,设计针对ADS40的相机检校方案,包括:判断几何检校的必要性,进行几何检校,以及验证几何检校成果的有效性.试验结果证明,对ADS40进行相机几何检校可以有效提高数据的精...     

基于定标场的ADS40系统几何检校

分析了ADS40影像的几何特性和相机检校模型,设计了一套针对ADS40系统的检校方案,并基于地面检校场的实际数据进行了验证。实验结果表明,通过合理的检校,可以获得ADS40高精度的检校文件,提高摄影测量的精度,并降低对控制点的依赖性。     

Stress regulation of photosynthetic system of Phaeocystis globosa and their hemolytic activity

Journal of Oceanology and Limnology - Blooms of Phaeocystis globosa have been reported accountable for massive fish mortality worldwide. The toxigenic mechanisms of P. globosa, however, remain...