The paper discusses some methods of economic analysis especially the DCF curve aud DCFR used to analyze the economic profits and trends of oilfield exploration and development.

The Discrete Chirp Fourier Transform ( DCFT) proposed recently is an effective technique for chirp signal detection. But it requires some rigorous restrictions on the signal length and parameters. These requirements restrict the application of DCFT.

离散Chirp Fourier变换（DCFT）是最新提出的一种检测线性调频信号的有力技术，但它对信号的采样点数和信号参数有着近乎苛刻的约束条件，限制了它的工程应用。

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In phase compensation, a new algorithm based on accurate target parameter estimation by use of discrete chirp-Fourier transform ( DCFT) transform is presented.

在方位向上，利用DCFT变换，对目标的运动参数进行精确估计并加以补偿，减小了回波相关性降低对相位补偿的影响。

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Multi-Component LFM Interference Suppression Based on DCFT and FRFT in DSSS Communication System

DSSS中基于DCFT和FRFT的多分量LFM干扰抑制方法

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Results: There were sudden changes of PR interval in the DCGs of all the 7 patients, and also the linking phenomenon and atypical Wenckebach ′ s phenomenon.

结果：7例患者的动态心电图均出现PR间期跳跃性的改变，并有蝉联现象及不典型文氏现象发生，呈DAVNP特征。

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Analysis of DCGs of 757 Patients

757例动态心电图分析

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The DCIP+ ascorbate → methyl viologen activity of this isolated heterocysts was 360 μ mol O_2 consumed/ mg Chl. h.

当提供DCIP和抗坏血酸时，被压碎的异形胞能够光还原甲基紫精，其活性为360消耗O2的微克分子/毫克叶绿素/小时。

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DCIP needs a minimum of four studios on board before it launches the$ 1bn financing, which funds the conversion of about 15,000 screens to digital projection systems.

DCIP在进行10亿美元的融资之前，需要至少4家电影公司的支持。这笔融资将用于把大约1.5万块屏幕转换成数字投影系统。

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In dark, electron flow from H_2O to DCIP and from DPC to DCIP was not affected by sulfite.

在黑暗条件下H2O→DCIP和DPC→DCIP的电子传递均不受影响。

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Cd~ ( 2+) reduced the activity of photoreduction of DCIP and the variable fluorescence of chloroplasts and PS ⅱ preparation.

Cd~（2+）使叶绿体和PSⅡ制剂的DCIP光还原活性降低；可变荧光也受到抑制。

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Bovine serum albumin stimulates the DCIP photoreduction activity of lettuce chloroplasts which has been treated with trypsin.

牛血清蛋白对被胰蛋白酶消化过的叶绿体光还原DCIP的活性有恢复作用。

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A Comparison of Water-splitting Activity, DCIP Photoreduction Activity and Some other Characteristics in PS ⅱ Particles Isolated from Several Species of Plants

几种植物PSⅡ颗粒的水裂解活性、DCIP光还原活性与某些性质的比较

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The rate of DCIP photoreduction decreased as the aging process was prolonged.

对老化的叶绿体则伤害明显，DCIP光还原速率依老化时间的延长而降低。

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There is only one set of real image clusters in real-image method, as opposed to multiple complex image locations required in the discrete complex-image technique ( DCIT).

与离散复镜像方法（DCIT）引入多个复镜像相比，实镜像方法仅引入一个实镜像。

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For a modified Double Crack Lap Shear ( DCLS) specimen of fiber reinforced metal laminates, an expression which relates its delamination size and its compliance is derived. A method for determining the delamination size in DCLS by compliance test is developed.

导出了纤维金属胶接层板双面裂纹搭接剪切（DCLS）试样分层尺寸和柔度之间的线性关系式，提出了DCLS试样分层尺寸的柔度测量法，并与用光测法测得的分层尺寸进行了对比。

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And it was found that dioxo-methyl group was a key factor to determine the antioxidant activity of DCLs, because its O and C had rather high net charge and its steric hindrance was rather low.

发现二氧甲基基团具有较大的O原子负电荷及C原子正电荷，且空间位阻较小，因此成为决定五味子素抗氧化活性的关键因素。

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It is shown that the compliance method for determining the delamination size in DCLS specimens is not only convenient and practical but also accurate.

结果表明，用柔度法测定DCLS试样的分层尺寸，不仅测量结果准确，而且简单易行，避免了光测法的诸多麻烦和精度低的缺点。

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The messages are divided by its prior degree, the Algorithm of Discarding Connection Management ( DCMA) is given, the buffer time is set in order to deal with the response message. The approach can hold a high effective connection management.

为减少冗余，对消息进行了优先级的划分，给出了丢弃冗余连接（DCMA）的算法，提出了设置缓冲时间来最大限度保存对Response消息的处理，达到高效的网络连接管理。

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Computer simulation proves that DCMA is more robust than SR-CMA and more computationally efficient than CMA, and its residual mean-square error is lower than that of CMA and SR-CMA.

仿真结果表明，DCMA的计算效率高于CMA，算法稳定性优于SR-CMA，而且可以获得较低的剩余均方误差。

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Only when we explore the full range of reform and core issues independently and improve the intergovernmental relations in the mode of management continuously, can we make the relationship between DCMA and territorial government a dynamic and balanced relation.

只有在全方位改革和核心问题上自主探索，在府际关系与管理模式上不断进行完善，才能使开发区管委会与属地政府之间形成平衡竞争与合作关系形态。

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DCMA combines the conventional CMA and SR-CMA, and the switch process between CMA and SR-CMA is realized by decision circle ring which boundary is decided by the signal-to-noise radio.

该算法将常规CMA算法和SR-CMA算法相结合，通过判决圆环完成两种算法之间的切换，根据信噪比确定判决圆环的边界。

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