DCF

Conclusions CCD fluorescent microscope is superior to laser scanning confocal microscope in collecting the quickly changing fluores-cent image such as DCF.

结论在采集快速变化的荧光图像时，CCD荧光显微镜系统优于激光扫描共聚焦显微镜系统。

The channel contention process between the nodes is formulated as a dynamic game with incomplete information. According to the Nash equilibrium of the game, a novel MAC scheme, called G-DCF ( Game theoretic DCF), is proposed.

通过将节点间的信道竞争过程建模为非完全信息动态博弈，解得节点竞争信道的纳什均衡策略（初始竞争窗口值）。根据此均衡策略提出对DCF的改进协议，即G-DCF。

However, it is observed that the primary deficiency of the current MAC protocol is to use the binary increasing-only mechanism. DCF absorbs the number of collisions as the condition to derive the contention window ( CW).

然而，我们可以看到现行MAC协议的主要缺点是使用二进制增长的机制，DCF以冲突次数作为条件来设计竞争窗口（CW）。

The Comparative Study on the Application of DCF and EVA to Enterprise Value Assessment

DCF法和EVA法对企业价值评估的应用比较

The investment valuation of China Unicom illustrates comparatively systemic process of DCF approach.

中国联通的投资价值分析提供了较完整的折现现金流量法评估企业价值的过程.

According to the estimation of the number of competing terminals, the optimized minimum contention window was calculated to improve the performance of IEEE 802.11 DCF in this algorithm.

该算法根据估计竞争信道的终端个数，计算最小竞争窗口的最佳值，并以此自适应优化IEEE802.11DCF协议的性能。

A distributed RTS threshold adjustment algorithm is proposed to optimize saturation throughput of IEEE 802.11 DCF network.

针对IEEE802.11DCF网络，提出了优化吞吐率的RTS门限分布式调整算法。

The distributed coordination function ( DCF) focuses on the feature of the ongoing transmitting links to enhance link throughput, however the lack of coordinated adjusting surrounding nodes may reduce the aggregate throughput of entire networks.

现有分布式控制策略（Distributed Coordination Function，DCF）关注于正在传输链路的特性及吞吐量的提高，但缺乏对周围邻居节点的协作调节。

fairness between two media access control mechanisms of ieee 802.11 dcf

IEEE802.11DCF的2种媒体访问控制模式间的公平性分析

A stack will be added in the DCF access scheme.

堆叠将会在DCF被增加通路方案.

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.

本文论述了在石油勘探开发中利用现金流动曲线和盈利率DCFR来分析油田开发经济效益的方法。

More and more scholars and practical managers realize that Discounted Cash Flow ( DCF) is not sure of flexibility, rivalrousness in management process and strategic value of decision activity, thereby failing to imply it.

许多学者和管理实践家逐渐认识到，DCF理论与方法并没有把握住管理活动中的灵活性、竞争性和决策活动的战略价值，因而应用DCF法在某些时候是失败的。

Adaptive RTS threshold Adjustment Algorithm for 802.11 DCF

802.11DCF中的自适应RTS门限调整算法

IEEE 802.11 distributed coordination function ( DCF) only supports transmission in the forward direction from senders to receivers.

IEEE802.11分布式协调功能（DCF）只支持前向数据传输，即数据帧只能由发送方传送到接收方。

Therefore, an adaptive optimization mechanism, DOOR ( dynamic optimization on range), is proposed for the IEEE 802.11 DCF, which is based on the condition detection and range of competing station number.

因此，设计了一个基于状态检测与竞争终端个数区间的自适应性能优化机制，DOOR（dynamic optimization on range）。

The meaning of assets value of mineral resource and the application principle of DCF ( Discounted Cash Flow) method in mining right evaluation are presented. Some problems in application of DCF method in the New Guideline are described.

阐述了矿产资源资产价值的含义、DCF法应用于矿业权评估的原理，详细介绍了新指南在应用DCF法中存在的一些问题。

Novel algorithm of dynamic contention window adjustment for 802.11 DCF

基于竞争窗口动态调整的802.11DCF改进算法

We can get the long-term influence, especially the influence to the value of enterprise by MM theory, DCF and the option thought.

使用MM理论、现金流量折现法以及期权思想来评估融资对企业的长期影响，特别是对企业价值的影响。

Based on analysis of the average time in a successful transmission and a collision procedure, the saturation throughput of IEEE 802.11 DCF network in hybrid mode is expressed as a function of RTS threshold.

通过分析一次成功发送和一次碰撞持续的平均时间，找到网络饱和吞吐率与RTS门限的关系。

Traditional Approach of DCF ( discounted cash now) is not proper for the economic value assessment of scientific& technological achievement.

传统的现金流析现法（DCF法）不适合评估科技成果的经济价值。

Results and Conclusion: DCF fluorescence showed linear increase in State 4 mitochondria, which suggest ROS produced at constant rate.

结果与结论：线粒体在态4呼吸状态下，DCF的荧光强度随时间呈线性增加，表明活性氧以恒定速率产生。

The Researches of Listed Companies Valuation on DCF Model

上市公司企业价值评估的DCF模型研究

The result revealed that the lifetime of DFF and DCF were remarkably increased, and their properties of photobleaching resistance were significantly enhanced.

结果表明，与荧光素相比，DFF和DCF荧光寿命显著提高，抗光漂白性能明显增强。

Simulation shows that the adaptive RTS threshold adjustment algorithm can greatly decrease the transmission time overhead of MAC frames, and enhance the transmission efficiency of 802.11 DCF.

仿真表明自适应RTS门限调整算法有效减小了MAC分组传送的时间开销，提高了信道的传输效率。

We tested the method with two opposite extreme situations of perfect correlation and perfect un-correlation. The test results show that the DCF method is feasible.

取两种极端的情况（完全相关和完全不相关）对该方法进行了测试，结果表明这是一种比较切实可行的方法。

ASA, CAT and DPI can suppress dark-induced H _ 2 DCF-DA fluorescence.

ASA 、 CAT和DPI均能抑制黑暗诱导产生的H_2O_2荧光.

Results Fluorescent density of dichlorofluorescein ( DCF), comet tail and LPO in groups 2 × 10-3~ 16 × 10-3 cig/ ml were all higher than the control significantly, and there were dose effect relationships.

结果2×10-3支ml以上剂量组二氯荧光素（DCF）荧光强度、彗星尾长以及LPO水平均显著高于对照组，且随剂量增加而增加。

DCF Models for Valuation of Non-listed Firms in China

贴现现金流模型在我国非上市公司股权价值评估中的应用

Simulation results show the analysis accurately predicts the saturation throughput in DCF mode.

仿真表明,分析结果与DCF模式下的饱和吞吐量是吻合的.

Finally, the paper calculates the value of China Yangtze Power Co. Ltd. through valuation methods as PE method, PB method and DCF method.

最后本文通过市盈率法、市净率法及现金流量折现法等价值评估方法计算了长江电力公司的价值。