郑州:挖土抽沙破坏基本农田八村民发财不成进班房

近日,广受关注并被列为河南省郑州市公开曝光土地违法案件之一的郑州市金水区祭城镇小郭村村民徐战山、徐红亮、郭喜军等非法挖土抽沙破坏基本农田一案,日前有了新的进展,涉嫌犯罪的徐战山等8人被检察院批准逮捕.     

Impact of nonlinear processes on formation of the Kuroshio large meander path in a barotropic inflow-outflow model

Based on a barotropic inflow-outflow model,we examine the formation of the Kuroshio large meander(LM) using conditional nonlinear optimal perturbation(CNOP) method.Both linear and nonlinear evolutions of such perturbations obtained by this method are investigated.The results show that the nonlinear evolution can result in the Kuroshio transition from a straight to LM path,whereas the linear evolution cannot.This implies that nonlinearity plays an important role in the formation of the Kuroshio LM path.The nonlinearity exists as advection in the evolution equations of the perturbation derived from the barotropic inflow-outflow model,namely the nonlinear advection of the perturbation by the perturbation(NAPP).By examining the role of this nonlinearity,we find that the NAPP tends to move the cyclonic eddy induced by the CNOP-type perturbation westward.Together with the beta effect,this offsets part of the eastward advection caused by the interaction between the perturbation and the background flow.Hence,the eastward movement of the cyclonic eddy is significantly weakened,effectively causing the eddy to develop.The sufficient evolution of this cyclonic eddy leads to the formation of the Kuroshio LM.     

冰川流域孕灾环境及灾害的天空地协同智能监测模式与方向

随着中国西部暖湿化进程加快,冰川流域孕灾环境快速变化,冰川灾害多发频发.因冰川流域地形极端复杂、地表覆盖变化迅速,冰川流域灾害具有链式发展的特点且物源区远程高位、地势险峻,面向普通地质滑坡和露天矿边坡的天空地协同监测技术难以直接或有效应用.本文基于冰川流域空间环境与灾害的监测内容及技术难点,分析了可用的现代测绘遥感技术及其局限性.针对监测对象、几何要素和质量要求,提出了基于天空地协同的冰川流域孕灾环境与灾害智能监测内涵,即平台协同、时间协同、参数协同和尺度协同,设计了任务驱动、知识引导的智能监测技术模式.面向3类基本监测任务,即个体冰川流域灾变过程情景模拟、冰川流域群孕灾环境差异分析与风险识别、冰川流域灾害事件应急响应,提出相应的天空地协同智能监测初步方案.最后,讨论了基于天空地协同的冰川流域孕灾环境与灾害智能监测关键问题,提出未来的工作方向.     

Gstar-Ⅰ型自动土壤水分站一次故障处理

<正>洛川国家基准站使用Gstar-Ⅰ型自动土壤水分观测仪。该仪器运行以来,不但提高了观测数据的时空密度,而且很大程度减轻了观测员的劳动量。Gstar-Ⅰ型自动土壤水分观测仪传感器安装在室外,通过4芯电缆使用RS485通讯模块与室内采集器和专用控制计算机连接。但是由于其传感器安装在室外,传输电缆较长,设备难免发生故障。本文以洛川国家基准站Gstar-Ⅰ型自动土壤水分观测仪的一次故障排除为例,阐述排除这类故     

含油气球冠模型三维重力归一化总梯度场特征

重力归一化总梯度的三维计算中,将圆滑滤波因子分别引入向下延拓和导数换算响应因子中,推导了其计算公式及数值实现过程,同时给出了具体的计算步骤;对含油气球冠模型的三维归一化总梯度场特征进行了分析与研究。研究结果表明,对于含油气球冠模型来说,不同于均匀球冠模型在各个深度的切平面等值线图中表现出单峰异常的特征,其三维归一化总梯度场的特征表现为:无论在过中心剖面的等值线图还是在某个深度的切片图中,只有当截止频率取值适当时才可以表现出"两高夹一低"的典型储油气藏标志特征,若取值不当,其表现出来的特征与均匀球冠模型相似。此外,归一化总梯度场等值线图中出现"两高夹一低"的位置,往往是含油气球冠所在位置和深度。     

浅析我国煤层气的应用与发展

随着世界原油不断减少,世界常规能源供给形势日益严峻,国际上逐渐把发展非常规能源作为新世纪能源发展的主要议题。煤层气的开发具有热值高、污染少、安全性高的特点,完全可以成为石油和天然气等常规能源的重要补充。世界上很多国家逐渐开始重视煤层气的勘探和开发试验,     

冬奥场馆临时支承架体安装质量快速检测

2022北京冬奥会的绝大部分赛事保障基础设施均以临时设施为主,这些临时设施大多建在脚手架上,需要插销实现“骨骼”的固定和连接。然而,整个场馆的插销多达数十万枚,利用人工检测难以实现。因此,迫切需要构建一套能对支承架体上插销的安装质量进行自动快速检测的软件系统。本文提出了一种基于Faster RCNN目标检测网络的插销安装质量检测方法,并自主研发了周转型支承架体安全检测软件及四摄像头组合硬件设备,大大提高了工作效率,不仅实现了自动化安全检查,还保证了97%以上的检测正确率,为冬奥会临时设施安全保驾护航。     

微型地基干涉雷达变形数据后续处理

基于笔者所在单位研制的微型地基干涉雷达,结合微型地基高速实孔径干涉雷达获取的重庆赖家桥大桥变形数据实例,本文对变形数据后续处理方法进行了研究。针对变形数据中存在的噪声及由于遮挡等原因造成的相位断裂问题,提出了处理方法并进行解决;针对噪声问题,对多种滤波器的去噪效果进行了仿真对比,小波变换滤波器效果最好;针对相位断裂问题,提出了一种基于变形数据时频特征的相位断裂探测与修复算法,实现了对相位断裂问题的自动化处理,效果显著。     

中国科技资源配置效率测度及其时空格局演变特征(英文)

According to the connotation and structure of science and technology resources and some relevant data of more than 286 cities at prefecture level and above during 2001–2010, using modified method—Data Envelopment Analysis(DEA), science and technology(ST) resource allocation efficiency of different cities in different periods has been figured out, which, uncovers the distributional difference and change law of ST resource allocation efficiency from the time-space dimension. Based on that, this paper has analyzed and discussed the spatial distribution pattern and evolution trend of ST resource allocation efficiency in different cities by virtue of the Exploratory Spatial Data Analysis(ESDA). It turned out that:(1) the average of ST resource allocation efficiency in cities at prefecture level and above has always stayed at low levels, moreover, with repeated fluctuations between high and low, which shows a decreasing trend year by year. Besides, the gap between the East and the West is widening.(2) The asymmetrical distribution of ST resource allocation efficiency presents a spatial pattern of successively decreasing from Eastern China, Central China to Western China. The cities whose ST resource allocation efficiency are at higher level and high level take on a cluster distribution, which fits well with the 23 forming urban agglomerations in China.(3) The coupling degree between ST resource allocation efficiency and economic environment assumes a certain positive correlation, but not completely the same. The differentiation of ST resource allocation efficiency is common in regional development, whose existence and evolution are directly or indirectly influenced by and regarded as the reflection of many elements, such as geographical location, the natural endowment and environment of ST resources and so on.(4) In the perspective of the evolution of spatial structure, ST resource allocation efficiency of the cities at prefecture level and above shows a notable spatial autocorrelation, which in every period presents a positive correlation. The spatial distribution of ST resource allocation efficiency in neighboring cities seems to be similar in group, which tends to escalate stepwise. Meanwhile, the whole differentiation of geographical space has a diminishing tendency.(5) Viewed from LISA agglomeration map ofST resource allocation efficiency in different periods, four agglomeration types have changed differently in spatial location and the range of spatial agglomeration. And the continuity of ST resource allocation efficiency in geographical space is gradually increasing.