计算时间

The limitations of two kinds of life tables, time-specific life table and age-specific life table were analysed and resolved. The limitation of time-specific life table could be solved by adding the survival rate of immature stages.In age-specific life table, the durations of each stage and the whole generation could be calculated by a formulary detruded from the life table, and rmcould be got from the generation duration.

针对特定时间生命表和特定年龄生命表两种编制方法中存在的不足进行了分析，并提出了可行的解决办法，即在特定时间生命表中导入幼期存活率，在特定年龄生命表中根据推导出的历期公式计算各个虫龄的历期，得到世代平均历期T，进而得到rm值。

In a planning investigation, the time frame for making comparisons of environmental effects should be the same as the time frame for making economic evaluations.

评价的时间构架与经济计算的时间构架一致。

The approach to calculating the gliding angle and flight time of each segment was given.The procedure for approaching the whole glide trajectory was described.Two examples show that the differences in the gliding range and flight time between the approximate solution and the...

文中算例结果表明，该近似求解方法计算得到的滑翔航程和滑翔时间与实际值相差很小，航程误差率约为0.7%，时间误差率约为0.6%，因此该方法在近似小初始滑翔角的长航时远程纵向滑翔飞行时是有效的、可行的，尤其针对航程在地球半圈以上的滑翔飞行轨迹。

With this measure, a new method for calculating the minimum embedding segment dimension of a linear segment sequence is proposed. With this method, the MESD of the linear segment representation of a real financial time series is calculated.

该方法实现了对时间序列的基于基本变化形态的合理分割，保证转换后的每一个符号都能代表一个基本的、相对独立的变化模式，为最终挖掘结果的有效性和可视化提供保证；同时，针对数据挖掘数据量大，对算法的计算效率和在线性能要求高的特点，提出了一个实现时间序列分段线性化的增量式更新算法；并利用神经网络模糊聚类算法实现了完全数据驱动的在线聚类分析。

Another 2 very useful features: signal recording mode which can detect sound signal on your computer and will pause, stop or create new files trigged by sound signal according to your settings ( with this feature,3D MP3 Recorder also can be used as a CD ripper ), time schedule recording mode which you can record for specified periods of time automatically.

另2非常有用的功能：信号记录模式，可以检测到声音信号在您的计算机上，将暂停，停止或创建新的文件引发的声音信号根据您的设置（此功能，三维的MP3记录也可作为一个CD开膛手），时间安排录音模式，您可以记录特定的时间内自动进行。

The different points of views, transverse section, plane and volume changes are considered. The results show that the evolution of the Xinqiao Channel has experienced three stages: in 1861~1926 ,the Xinqiao Channel area had been eroded at first and then silted; the Xinqiao Channel is formed during 1926~1958 with the channel experiencing persistence erosion; from 1958 to 2002, the total volume of the Xinqiao Channel keeps stable with the volume of 5.02×108m^3. The pattern of 10m contour has shaped to a certainty in 1926 and 5m contour of the upper and lower parts of Biandansha has been joined. The change of sections of the Xinqiao Channel reflects its thalweg movement to the North Bank 1.1~2.8 km, its shape changes from "U" shape to "V" shape and its depth has been deepened.

计算结果显示在所研究的区域内自1861年以来新桥水道冲淤过程明显被分为三个阶段：1861~1926年的66a间新桥水道区域经过一段时间的冲刷后又重新产生淤积，总容积变化不大；1926~1958年的33a间新桥水道在不断的冲刷中总容积由2.603亿立方公尺增长到5.076亿立方公尺；1958年至今的45a时间里水道容积基本保持在平均5.02亿立方公尺。1926年新桥水道10m等深线已经形成一定的格局，1947年5m等深线向上延伸，扁担沙已经不再与崇明岛相连；1958年上下扁担沙的5m等深线基本连成一体，可以认为此时新桥水道已经形成。

This global network of 3 million computers averages about 14 TeraFLOPS, or 14 trillion floating point operations per second, and has garnered over 500,000 years of processing time in the past year and a half.

大约 300 万台计算机，计算效率约为平均每秒运行 14 TeraFLOPS 或 14 兆浮点操作每秒，在过去的一年半的时间里项目共计调用了大概 500，000 年的 CPU 处理时间。

Many digital maps use only signposted speeds to calculate journey times and take little account of the way traffic flows change during the week and at different times of the day.

许多电子地图只提醒路标上的车速，且只用于计算行车的路程及所用的时间，它们常常很少考虑到交通流量在一天或一周不同时间内的变化。

Many digital maps use only signposted speeds to calculate journey times and take little account of the way traffic flows change during the week and at different times of the day.

许多电子地图使用路标上显示的速度限制来计算一段路程花费的时间，却没有考虑到车流在一周甚至一天不同时间都是大相径庭的。

How to analyze the cyclic fluctuation of urban traffic flow theoretically, and how to determinate the cycle of urban traffic flow, those are the problems to be solved. In this paper, a study on long_term dependence of urban traffic flow based on rescaled range analysis is presented. The method is introduced,the analysis results of a case study on time_s...

论文提出用R/S分析交通流的长程相关性来研究这一问题，介绍了该方法的原理，给出了一组实际交通流时间序列的实证分析结果，从计算出的Hurst指数求出了该交通流时间序列的变化周期，讨论了有益的结论。

And Pharaoh spoke to Joseph, saying, Your father and your brothers have come to you.

47：5 法老对约瑟说，你父亲和你弟兄们到你这里来了。

Additionally, the approximate flattening of surface strip using lines linking midpoints on perpendicular lines between geodesic curves and the unconditional extreme value method are discussed.

提出了用测地线方程、曲面上两点间短程线来计算膜结构曲面测地线的方法，同时，采用测地线间垂线的中点连线和用无约束极值法进行空间条状曲面近似展开的分析。