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计算史
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  computing history
     Timeline of Computing History
     计算史年表
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     Timeline of Computing History
     计算年表
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     We also give a new correction factor to simplify the calculation of the Unstatistic.
     的计算
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     Computational atmospheric acoustics
     计算大气声学
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     History of Seismology
     地震学
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     A practical TTI-R_ o method for hydrocarbon maturity history reconstruction.
     计算烃类成熟度的实地TTI-R_o法
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  computing history
Xanadu is probably the most influential vaporware of the computing history.
      
  history of computing
We demonstrate that, in the history of computing technology in the 20th century, a distinction can be made between periods in which either demand or knowledge development played the bigger role in shaping the technological paradigms.
      
Norberg (eds): History of computing: software issues
      
Much of the history of computing can be seen as an ever-changing balance between standardization and innovation.
      
Over the fifty-year history of computing computer engineers have sporadically sought to construct minimal computers using only a single simple instruction.
      
A few monographs are selected here as a way of illustrating the kinds of topics covered by the history of computing.
      
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The relative contents of coal macerals vary with geological time.Therefore,it muse make errors to calculate the amounts of hydrocarbons generated during geohistory based on the present testest maceral compositions.The present paper gives out a method for recovering the relative content of coal macerals in the geohistory.The further research shows that the relative content variation of the liptinite is the largest during the geohistorical process,then are the virtrinite and fusinite.And the amounts of CH 4,...

The relative contents of coal macerals vary with geological time.Therefore,it muse make errors to calculate the amounts of hydrocarbons generated during geohistory based on the present testest maceral compositions.The present paper gives out a method for recovering the relative content of coal macerals in the geohistory.The further research shows that the relative content variation of the liptinite is the largest during the geohistorical process,then are the virtrinite and fusinite.And the amounts of CH 4, C 2 C 4 and liquid oil generated in coal during geohistory will be underestimated if the calculation is based on the present maceral compositions Their maximum theoretical deviations can reach to as high as 32.72%,32.25% and 14.04%,respectively.

在地史过程中煤岩显微组分的相对含量是变化的,用其现今实测值代替地史演化过程中的含量值计算生烃量势必产生误差。提出了一种恢复地史过程中煤岩显微组分相对含量的方法并进一步研究表明:煤岩中稳定组的相对含量在地史过程中变化最大,其次是镜质组和丝质组。用煤岩当前显微组分相对含量计算的地史过程中甲烷气、重烃气和液态烃的生成量较实际值要小,它们的最大偏差在理论上分别可达到14.04%、32.25%和32.71%。

The tooth enaml of mammalian fossil is able to be efficientiy resistant todiagenesis and retains the original carbon and oxygen isotopic composition. On thebasis of the analyses to the isotopc composition of herbivorous mammalian toothenamel, the paleoclimares when these mammals. lived can be reconstructed. The carbonisotopic composition of structural carbonare in tooth enaml responds to that of dietaryplants. According to thes principle, the proportions of C3 and C4 plants in thetermstrial ecosystem can be...

The tooth enaml of mammalian fossil is able to be efficientiy resistant todiagenesis and retains the original carbon and oxygen isotopic composition. On thebasis of the analyses to the isotopc composition of herbivorous mammalian toothenamel, the paleoclimares when these mammals. lived can be reconstructed. The carbonisotopic composition of structural carbonare in tooth enaml responds to that of dietaryplants. According to thes principle, the proportions of C3 and C4 plants in thetermstrial ecosystem can be estimated, which were contrlled mainly by CO2atmospheric levels, moisture stress and irradiance as well as related to differentlatitudinal or climatic zones. The oxygen isotopic composition of biogenic phosphatein tooth enamel responds tD that of ingested water from precipitation whose oxygenisotopic composition responds to temperature vallations. As a result there is anoutstanding cormlation between oxygen isotopic composition of tooth enaml andtemperature. In the light of ths pattem, the annual average temperature in thegeological periods can be calculated and the climatic variation curve of cold and warmin the geological periods can be made.

哺乳动物化石牙齿釉质能有效地抵抗成岩作用的影响,并保存原始的碳、氧稳定同位素组成信息。通过对食草类哺乳动物化石牙齿釉质同位素组成的分析可以重建这些动物生存时代的古气候。釉质碳酸盐的碳同位素组成响应于取食植物的碳同位素组成,藉此可以恢复陆地生态系统中C3和C4植物的分布比例,这个比例主要受控于大气的CO2水平、气压和光照等因素,与不同的纬度带和气候带有关;釉质磷酸盐的氧同位素组成响应于饮用水的氧同位素组成,饮用水来源于大气降水,其氧同位素组成响应于温度变化,所以釉质的氧同位素组成与气温之间有显著的线性相关,藉此可以计算地史时期的年平均温度、绘制气候的冷暖变化曲线。

The deposition evolution, tectonic evolution and stress field evolution are analyzed. A method for studing on the evolution of fault sealing properties by using the calculation of the normal stress on the fault surface in history are proposed. This method is applied to analyze Cui 6 and Cui 7 faults in Cuizhuang. The stresses on the fault surface are various at different depths. Two faults were open in the period of Wubao movement, and two faults were sealing in the period of Sanduo movement. The sealing property...

The deposition evolution, tectonic evolution and stress field evolution are analyzed. A method for studing on the evolution of fault sealing properties by using the calculation of the normal stress on the fault surface in history are proposed. This method is applied to analyze Cui 6 and Cui 7 faults in Cuizhuang. The stresses on the fault surface are various at different depths. Two faults were open in the period of Wubao movement, and two faults were sealing in the period of Sanduo movement. The sealing property of Cui 6 fault is better than that of Cui 7 fault. The method can be used to determine the distribution of oil and gas.

对沉积埋藏史、构造演化史、应力场演化史进行了研究,提出了通过计算地史时期断面所承受的正应力来研究断层封闭演化史的方法。运用该方法对崔庄地区崔6、崔7两条主要断层进行了分析。结果表明,埋藏深度不同,断面正应力的大小也不同。吴堡运动时期,两条断层为开启状态;三垛运动时期,两条断层均承受压应力,但崔6断层的封闭性优于崔7断层,即成藏期封闭性好的断层控制的断块,其油气富集程度高;反之,油气富集程度就低。

 
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