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  fire-points
Comparing neural network with visual interpretation, the conclusion is drawn that by using neural network the purpose of auto-identification of forest fire-points in NOAA images can be realized with the almost same precision.
      
The result of the test shows that the disciplined neural network has collected the character of fire-points and has ability to identify fire-points in NOAA images.
      
In this paper, the principles and method of using neural network technique to automatically identify fire-points in NOAA images are discussed and the test in the range of Hubei province is presented.
      
Identification of forest fire-points in NOAA images in the basis of monitoring forest fire using NOAA satellite data.
      
Auto-identification of forest fire-points in NOAA images based on neural network
      


In order to cut down the possibility of firing and exploding of jute dust, a wettingmethod to raise the fire point and to reduce the spontaneous combustion is used. In this equi-pment the usual fibre seperator is improved for the collecting of the longer jute fibre, andthe practical application of the three staged disc is introduced.

本文提出用加湿方法降低麻尘自燃性和提高麻尘着火点从而减少麻尘着火爆炸的可能性。在设计中改进了常规纤维分离器使能适应较长的麻纤维。文章还介绍了三级圆盘除尘设备的实用情况。

This paper provides a calculating method which can be used in calculation of the kill probability attack area for every AAM. At first, attack area of AAM and kill probability of every characteristic point are obtained by combining trajectory calculation with kill probability calculation. Then, coordinates of a fire point relative to standard kill probability value in terms of standardization method are founded. At last equivalent kill probability curve equations are formulated by means of curve fitting method....

This paper provides a calculating method which can be used in calculation of the kill probability attack area for every AAM. At first, attack area of AAM and kill probability of every characteristic point are obtained by combining trajectory calculation with kill probability calculation. Then, coordinates of a fire point relative to standard kill probability value in terms of standardization method are founded. At last equivalent kill probability curve equations are formulated by means of curve fitting method.

本文首先应用弹道计算和杀伤概率计算的方法,得到了空空导弹的全向攻击区和攻击区内各特征点上的导弹杀伤概率值,再由规范化处理求得各个规范化杀伤概率所对应的发射点坐标,最后通过选择性的曲线拟合方法获得全向攻击区内的等杀伤概率曲线方程。文中的方法和数学模型适用于各种空空导弹。

In this paper,the meteorological factors of the catastrophic forest fire in Da Hinggan Lingregion of northeastern China in May,1987 have been analysed.It is found that the drought andless rainful in the previous period,and much higher temperature in the first ten-day of May arethe climatic conditions of the forest fire.Da Hinggan Ling region is located in northeastern China,which is part of the frigid-tempe-rate zone and the annual mean temperature is—3 to—6℃.Therefore,the organic matters aredecomposed rather...

In this paper,the meteorological factors of the catastrophic forest fire in Da Hinggan Lingregion of northeastern China in May,1987 have been analysed.It is found that the drought andless rainful in the previous period,and much higher temperature in the first ten-day of May arethe climatic conditions of the forest fire.Da Hinggan Ling region is located in northeastern China,which is part of the frigid-tempe-rate zone and the annual mean temperature is—3 to—6℃.Therefore,the organic matters aredecomposed rather slowly and make more and more combustibles accumulated in the forest.Itprovides the material condition of the fire.A very strong dry cold front with the average wind speed 8—12m/s,and the extreme speed17.0m/s,just passed away when a large number of fire points were in existence,which spreadedthe fire over wide areas rapidly.This is the key factor of the fire.In addition,the topographicfactor which related to the temperature and the snow cover also affected the extension of thefire.

本文分析了1987年5月大兴安岭特大森林火灾的气象成因。前期干旱、少雨及5月上旬气温的显著偏高;是发生特大火灾的气候背景。大兴安岭位于我国最北部,属于寒温带,年平均气温只有-3—-6℃,有机物分解缓慢,使林内可燃物越积越多,是发生火灾的物质基础。在已有大量火源存在的情况下,正逢有强干冷锋过境,平均风速达8—12m/s,最大17.0m/s,使火势急速蔓延,是造成特大森林火灾的最关键因素。地形与气温、积雪有密切关系,也对火场的蔓延有一定的影响。

 
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