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数字
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  digital
    Digital Employment--The Study of the Informationization of Regional Labor Market Based Geographic Information System
    数字就业——基于GIS的区域劳动力市场信息化研究
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    Research on Terrain Data Acquisition & Digital Terrain Analysis in Digital Terrain Modeling
    数字地形模拟—地形数据获取与数字地形分析研究
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    Research on the Construction and Application of Spatial Data Infrastructure of Digital City
    数字城市空间数据基础设施的建设与应用研究
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    The Research and Practice on Key Techniques of Digital Basins Construction Based on GIS and RS
    基于GIS和RS的数字流域构建关键技术研究与实践
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    The Theory & Practice of "Digital City"
    “数字城市”的理论与实践
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  digitized
    Digitized tracing table control system design based on DSP for aerophotograph
    基于DSP的全数字航拍跟踪平台的系统设计
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    Application of the Whole Digitized Photogrammetric Survey System to Overhead Transmission Line Survey
    全数字摄影测量系统用于架空送电线路勘测
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    Application of ground digitized mapping technique in surveys
    地面数字测图技术在测量中的应用
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    A Matlab Based Digitized IF GPS Signal Generator Model
    基于Matlab的数字中频GPS信号生成模型
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    Design and Realization of Two-Position Digitized Strapdown North Seeker
    二位置数字捷联寻北仪的设计与实现
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  “数字”译为未确定词的双语例句
    The Application of Graph Theory In Digitcal Mapping
    图论在数字制图中的应用
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    IMAGE MATCHING METHOD VIA DYNAMICPROGRAMMING
    数字影像匹配的动态规划方法
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    The Description of Image Features by Wavelet Theory
    数字影像上特征信息的小波表示
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    With the development of Mobile Communication and the Internet scale,it becomes very important that three dimensional geographic information data.
    随着移动通信的迅猛发展,网络规模不断扩大,借助数字地图,尤其是三维地理信息数据进行网络规划和优化已变得越来越重要。
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    defines that spatial data warehouse is location between spatial database and application; ; describes difference between spatial data warehouse and spatial database & application system;
    第四,设计出了空间数据仓库的外部体系结构,说明了空间数据仓库处于数据库系统和应用系统的中间,它从数据库系统抽取数据,经过空间数据仓库的集成处理,生成各种数字产品提交给应用系统使用;
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  digital
Such systems play an important role in time-frequency analysis and digital signal processing.
      
There are many advantages in the use of Hadamard matrices in digital signal
      
An Inhomogeneous Uncertainty Principle for Digital Low-Pass Filters
      
This article introduces an inhomogeneous uncertainty principle for digital lowpass filters.
      
The measure for uncertainty is a product of two factors evaluating the frequency selectivity in comparison with the ideal filter and the effective length of the filter in the digital domain, respectively.
      
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  digitized
Digitized visible models of these structures can be applied as a useful tool in clinical training.
      
The aim of this study was to reconstruct the normal structures of thoracodorsal artery in 3D images and to establish the digitized visible models of latissimus dorsi myocutaneous (LDM) flap.
      
An approach to evaluating the sizes of round microparticles in a digitized image was proposed.
      
In the first mode, input processes are digitized after a START signal; in the second mode, a signal exceeding a preset threshold is uninterruptedly sought for and recorded.
      
The signal passing through one of the radiospectrometer's analog filtering channels is digitized at an intermediate frequency of 30 MHz.
      
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本文讨论了综合利用摄影测量数据和辅助仪器数据,进行空中三角测量平差的问题。辅助仪器的数据系指由高差仪和无线电测高仪所获得的模型点位高程,以及由雷达航测所获得的平面点位坐标。这项分析讨论是依据实验成果进行的。空中三角测量的实验系利用方格网在精密立体测图仪上进行的,而辅助仪器的数据是适当选用的虚拟数字。在平差计算中采用了三种方法,即:1)根据原始系统误差和偶然误差的假定,2)根据抛物改正曲线,3)根据修均法。结果指出,在所采用的18个模型的空中三角测量情况下,抛物改正曲线法给出最佳的成果。

:

本文扩充和改进了贝塞耳和文献[2]的公式。利用三角级数回求法消除了这两种公式在正算中的逐渐趋近过程;同时还分别导出了这两种公式在高精度(0″.0001)和低精度(0″.01)时的实用公式,并编制了相应的数字表,这些数字表篇幅很小,且适用于任意椭圆体.最后本文导出了一组适用于中距离的严密公式(达s~7项),当这个公式用于中距离或低精度的主题正算时,很多高次项均可略去,因而计算工作比较方便。

In sensitometry,the characteristic values of sensitivity and contrast coefficient are generally,obtained from photographic characteristic curve graphically.Because of the low graphical accuracy,the determined values are quite inconsistent. Masao Inui and Syuji Kashiwa (Japan) have suggested a mathematical model which may be used to calculate numerically the photographic characteristic values.In this paper, the equations to calculate the sensitivity and contrast coefficient by the model are ana- lysed and the...

In sensitometry,the characteristic values of sensitivity and contrast coefficient are generally,obtained from photographic characteristic curve graphically.Because of the low graphical accuracy,the determined values are quite inconsistent. Masao Inui and Syuji Kashiwa (Japan) have suggested a mathematical model which may be used to calculate numerically the photographic characteristic values.In this paper, the equations to calculate the sensitivity and contrast coefficient by the model are ana- lysed and the procedure of calculation by adjustment is derived.Ten characteristic curves were calculated in the TQ-16 electronic computer and the obtained values were compa- red with the graphical ones (five persons).It was found that the discrepancies of sen- sitivity and contrast coefficient were within±0.6 and±0.06 respectively.The result was consistent with the experiment carried out by Masao Inui and Syuji Kashiwa.The adopted mathematical model is proved to be very practicable.

在感光测定中,一般都用图解的方法从感光特性曲线上求出感光度、反差系数等特性数值。由于图解的方法精度低,因此,测定的数值很不一致。本文介绍日本犬井正男,柏修司所提出的利用一个数学模型进行数字解算感光特性数值的方法,分析了根据该数学模型计算感光度和反差系数的公式,并推导出平差计算的步骤。在 TQ—16电子计算机上计算了10条特性曲线,与图解平均值(5人)进行了比较,其感光度差值在±0.6以内,反差系数差值在±0.06以内,所得结果与犬井正男,柏修司的试验结果一致,因此,可以认为该数学模型是合理可用的。

 
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