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Based on the new recognition, the theory basis of the modified isochronal test is analyzed, and a conclusion that the selection of flow rate test plays an important role in the test results has been drawn. Furthermore, the shape and error curves for deliverability has been analyzed under the conditions with excessively large or small flow rates to the modified isochronal test, based on which the application scope of the modified isochronal test is shown.
据此对修正等时试井的理论基础进行了分析研究,得出在试井过程中测试流量的选择对试井的结果有着重要影响的结论,并分析了测试流量过大或过小时修正等时试井产能曲线的形态及误差。
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Characteristics of the Internet traffic data flow are studied based on the chaos theory. A phase space that is isometric with the network dynamic system is reconstructed by using the single variable time series of a network flow. Some parameters, such as the correlative dimension and the Lyapunov exponent are calculated,and the chaos characteristic is proved to exist in Internet traffic data flows. A neural network model is constructed based on radial basis function to forecast actual Internet traffic data flow.
摘 要:应用混沌理论,分析了网络流量,用单变量的网络流量时间序列重构与网络动力系统等距同构的相空间,进而计算了实际网络的关维数和Lyapunov指数,并证实了网络流量存在混沌特性;据此建立了基于径向基函数神经网络的模型,并对实际网络数据流进行了预测。
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Based on the above, the paper puts forward the architecture for accessing the distributed isomorphic or heterogeneous database based on Web Service technology.
通过集团公司的案例实践,本文提出了利用Web服务整合同构或异构分布式数据库的原型系统。
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In chapter 7, the image compression is studied based on Iterated Function System . The method based on IFS for edge detection is proposed, which extends the application range of IFS.
第七章研究了IFS理论在图象压缩编码中的应用,提出了将IFS理论应用于图象特征提取的思想,扩展了IFS理论的应用范围。
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Based on introducing the control principle of the jigger system, the analysis of control requirement for the system was achieved, and the control scheme was proposed. The construction of hardware platform based on programmable logic controller was built. The control strategies about the velocity-tension transmission system and the temperature of dyeing liquor were presented.
在介绍卷染机控制原理的基础上,对系统的控制要求进行了分析,并确定了控制方案,搭建了基于可编程逻辑控制器的卷染机硬件控制平台,提出了卷染生产过程中速度张力传动控制策略和染液温度控制策略。
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Based on the selection rules on the rotational joint fit comer, spherical joint fit comer and parallel bar interference, which are application-based, the relationships between those restrictions and mechanism parameters are deduced in the mathematic functions, especially for the compound spherical joint.
文章摘要:以6-RSS型并联机构为研究对象,建立解析形式的反向运动学方程,给出考虑驱动副转角范围、球副转角范围、连杆干涉等约束条件时的反解选取准则,推导出每种约束表达与机构参数间关系,特别是复合球副独特的附加约束表达。
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A new single image super-resolution reconstruction algorithm is presented based on projection. Using the Kronecker product of two matrices, the vector based observation model is converted to an equivalent matrix based model.
目前,已提出了各种图像超分辨率算法,其中较经典的有频域法、MAP方法、极大似然估计法、凸集投影P(CS方法以及基于相机成像模型的迭代算法[3],近年又发展了基于小波l_4_、基于学习及基于识别等的新算法。
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An economic system based on free labour and free exchange is far more dynamic and adaptable than a system based on coercion.
一个以自由劳动力和自由交换为基础的经济体制要远远比一个以强迫劳动为基础的经济体制更为有活力,适应力更强。
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For this purpose it employed a technique based on fractal dimension,multi-fractal and lacunarity concepts,and constructed feature vectors based on the concepts combined with intensity.
引入了分形、多重分形和空隙等概念,建立了其特征向量,结合灰度特征进行了图像分割实验,通过对提取出来的特征向量进行平滑滤波处理,采用 K 均值分类算法有效地保证了分割效果。
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Namely, the first, the beginning, end and length of growing season of every type of vegetation is estimated with threshold method and moving average method, and the beginning end and length of growing season of vegetation from 1982 to 1999 is fitted linearly, finally, linear trend of the beginning end and length of growing season of vegetation is analyzed. The second, phenological phase in different years and zones is estimated based on greatest changes of slope method and EOF analysis method, and the result monitored by the two methods is compared, as a result, trend of growing season change from 1982 to 1999 in different latitude zones is better acquired. The third, phenological phase of vegetation in different spatial location from 1982 to 1999 is fitted based on curve. Then, spatial difference rules of growing season of every year and average of multi-year is discussed in article. In the end, lag correlation and linear regress are used to study relation between phenological phase of different types of vegetation, different latitude zones, different spatial places and climate changes.
利用阈值法和滑动平均法逐年估测了每种植被类型的生长季的开始、结束日期及长度;对18年中植被生长季的开始、结束时间和长度进行一次线性拟合,分析了植被生长季的开始、结束日期和长度的线性变化趋势;基于最大变化斜率法和EOF分析法估计了不同年份、不同区域内植被生长季的开始、结束时间及其长度,并对这两种方法的监测结果作了比较,从而得到了较好的不同纬度区域1982~1999年植被生长季的变化趋势;基于曲线拟合了1982~1999年的不同空间位置的植被物候期,然后讨论了每年和多年平均的植被生长季的空间分异规律;最后利用时滞相关分析和线性回归研究了不同类型植被的物候期与气候变化的相互关系,不同纬度带的植被物候期与气候变化的相互关系,植被物候期与气候变化空间相互关系。
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- 推荐网络例句
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This one mode pays close attention to network credence foundation of the businessman very much.
这一模式非常关注商人的网络信用基础。
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Cell morphology of bacterial ghost of Pasteurella multocida was observed by scanning electron microscopy and inactivation ratio was estimated by CFU analysi.
扫描电镜观察多杀性巴氏杆菌细菌幽灵和菌落形成单位评价遗传灭活率。
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There is no differences of cell proliferation vitality between labeled and unlabeled NSCs.
双标记神经干细胞的增殖、分化活力与未标记神经干细胞相比无改变。