气象影视节目制作中设备的综合运用

文章通过一段气象节目制作的实例,浅析了气象影视节目制作中各种主要设备的综合使用及切换台和非线性编辑系统的主要工作原理.     

考虑地层变异特征一致性的围岩变形不确定性分析

目前地层变异性分析大多基于地层重复性沉积和变异特征一致性假设,而未考虑地质构造和风化作用的影响,忽略了地层变异性特征一致性的检验。为此,提出地层变异特征一致性的检验和分区方法,采用岩土相局部状态转移概率矩阵的相关系数作为一致性的定量判据,基于耦合Markov链模型模拟地层分布,并通过Monte Carlo方法分析隧道围岩变形的不确定性。利用青岛轨道交通某斜井的地质钻孔数据,探讨了地层变异特征一致性对地层分布和变形模拟精度的影响,分析了所提方法的有效性。结果表明,当地质构造和风化作用导致地层变异特征不一致时,增加钻孔数量无法提高地层分布模拟精度,采用所提方法对地层变异特征一致性检验并分区后,可避免状态转移概率矩阵中局部地层分布特征缺失的问题,提高围岩变形不确定性分析的准确性。     

Income inequality and growth from functional orientation and spatial policy: Case study of Tibet,China

Economic inequality and poverty are problemsexperiencedbymanycountries.Considerable attention has been paid to these issues in recent times.Studies on economic inequality have been characterized by geographical disparities and a lack of consideration of functional orientation.As one of the most typical and featured mountainous areas in Western China,Tibet demonstrates both the necessity and urgency of conducting studies on income inequality and growth issues.This paper proposes to address these problems by exploring the temporal and geographical variations in income inequality in Tibet,thereby revealing the differences in functional zones.Spatial Markov chains and panel regression analysis were applied to identify the spatial-temporal dynamics of income disparity.The results of this study show that(1)the overall income inequality in Tibet shows an expanding trend in the period 2005–2010 and a converging trend in the period 2010–2015,and there is a large disparity in income inequality between functional zones;(2)Tibetan farmers and herdsmen may face great difficulties in achieving substantial growth in the near future;(3)frontier counties,cultivated land,and grassland areas have negative impacts on income growth,while cordyceps counties,GDP per capita,agricultural product proportion,transfer payments,the ratio of nonagricultural employment to the total employment,the length of the average schooling year,and the slaughter rate of cattle and sheep have positive impacts;and(4)functional orientation has made great differences to income inequality and its mechanism.In light of these results,evidence-based policies have been formulated to boost average household income and narrow income inequality in Tibet.     

Bayesian geological and geophysical data fusion for the construction and uncertainty quantification of 3D geological models

Traditional approaches to develop 3D geological models employ a mix of quantitative and qualitative scientific techniques,which do not fully provide quantification of uncertainty in the constructed models and fail to optimally weight geological field observations against constraints from geophysical data.Here,using the Bayesian Obsidian software package,we develop a methodology to fuse lithostratigraphic field observations with aeromagnetic and gravity data to build a 3D model in a small(13.5 km×13.5 km)region of the Gascoyne Province,Western Australia.Our approach is validated by comparing 3D model results to independently-constrained geological maps and cross-sections produced by the Geological Survey of Western Australia.By fusing geological field data with aeromagnetic and gravity surveys,we show that 89%of the modelled region has>95%certainty for a particular geological unit for the given model and data.The boundaries between geological units are characterized by narrow regions with<95%certainty,which are typically 400-1000 m wide at the Earth's surface and 500-2000 m wide at depth.Beyond~4 km depth,the model requires geophysical survey data with longer wavelengths(e.g.,active seismic)to constrain the deeper subsurface.Although Obsidian was originally built for sedimentary basin problems,there is reasonable applicability to deformed terranes such as the Gascoyne Province.Ultimately,modification of the Bayesian engine to incorporate structural data will aid in developing more robust 3D models.Nevertheless,our results show that surface geological observations fused with geophysical survey data can yield reasonable 3D geological models with narrow uncertainty regions at the surface and shallow subsurface,which will be especially valuable for mineral exploration and the development of 3D geological models under cover.     

基于GIS的西平县土地利用变化分析

在遥感和地理信息系统软件支持下,通过2002年的ETM＋和2007年的CBERS遥感图像分析,利用马尔科夫链的元胞自动机模型与构建土地利用适宜性图层,模拟西平县2012年土地利用变化。结果表明：到2012年,西平县城镇及工矿用地将在原有基础上向四周辐射发展,交通运输用地将在原来基础上拓宽,村镇居民点及公路周围的耕地将减少,林地、其他用地也将减少。     

Word2003启动时打开常用输入法

通常只要一打开Word 2003就会自动切换到"微软拼音输入法",如果你惯用的不是这种输入法恐怕就会觉得很困扰了。能不能让Word启动时自动打开我们惯用的输入法呢?这其实并不难做到。依次打开"控制面板→添加或删     

一类带马氏切换与时滞的未定权益模型的对冲策略

在风险资产服从一类带马尔科夫模式切换（马氏切换）的时滞随机微分方程模型的情形下,考虑了一个以上述风险资产为标的资产的欧式未定权益,利用Esscher变换找到了等价鞅测度,并在此基础上得到该权益价格过程的鞅表示.同时,在资产价格过程的系数满足一定条件的假设下,给出了在由马氏切换的出现而导致的不完备市场中,通过最小化残余风险而求得的最优连续对冲策略.     

事件触发机制下离散分布时滞Markov跳变网络化系统故障检测

考虑具有分布时滞的离散Markov跳变网络化系统,为有效利用网络资源,减少网络数据的带宽占用,设计一种基于事件触发机制的故障检测滤波器.根据设计的Markov跳变网络化系统选取低保守性的Lyapunov泛函,推导故障检测系统随机稳定的充分条件,利用凸优化求解算法计算故障检测滤波器参数.数值仿真实例验证故障检测方案的有效...     

搜狗推73城市三维地图

近日,电子地图服务商搜狗地图正式推出三维城市地图．覆盖北京、上海、广州、深圳、杭州等73个城市。据悉．此次搜狗地图的三维城市地图是与E都市合作推出的．采用E都市的三维地图数据．并与搜狗地图原有的二维、卫星地图平滑切换,带给网友更加直观的地图使用体验。     

An Improved, Downscaled, Fine Model for Simulation of Daily Weather States

In this study,changes in daily weather states were treated as a complex Markov chain process,based on a continuous-time watershed model(soil water assessment tool,SWAT) developed by the Agricultural Research Service at the U.S.Department of Agriculture(USDA-ARS).A finer classification using total cloud amount for dry states was adopted,and dry days were classified into three states:clear,cloudy,and overcast(rain free).Multistate transition models for dry-and wet-day series were constructed to comprehensively downscale the simulation of regional daily climatic states.The results show that the finer,improved,downscaled model overcame the oversimplified treatment of a two-weather state model and is free of the shortcomings of a multistate model that neglects finer classification of dry days(i.e.,finer classification was applied only to wet days).As a result,overall simulation of weather states based on the SWAT greatly improved,and the improvement in simulating daily temperature and radiation was especially significant.