类函数

In this paper,a novel clustering algorithm DBSB (Density Based Spatial Clustering Method with Heuristically Selecting Border Object) is proposed.The algorithm fastly expands the clusters by a heuristical function to choose core objects in the border region of the known core object,and then merge some clusters by border objects.

本文提出了一种启发式选择边界对象的快速空间聚类算法DBSB，通过一个启发式函数近似选择相对于某个已知核心对象边界区域中的核心对象和边界对象，通过核心对象的序列来快速地扩展它们所在的簇，直至找到一些较小的簇。

Using the amplification transfer function of type Ⅰ BBO crystal, the theoretical study of spatial properties of the optical parametric fluorescence generated by homochromatic signal and polychromatic signal in optical parametric amplification is investigated, The numerical simulation results demonstrate that when the homochromatic signal is injected into optical parametric amplifier, the fluorescence signal is first emitted in a cone and then in a ring while centering on the pump wave direction.

采用第Ⅰ类相位匹配BBO晶体的放大传递函数方法，分别对光参量放大过程中单波长信号光注入和多波长信号光注入出现的参量荧光的空间特性进行了详细的理论研究。

This method uses what Professor Salton has proposed as the vector spacial model to express text as an invisible vector in hyperspherical space.It makes use of certain pre-disposal methods (reduce the dimensions,clustering thesaurus,filtering out old-fashioned words) to reduce the dimensions.It usescosines to measure the degree of similaritybetween texts and uses the total similarity as the target convergence vector.It produces clustered results by using restricted iteratives to achieve partial perfection.

该算法用Salton教授提出的向量空间模型把文本表示成不可视的超球向量空间的一个向量，采用一定的预处理手段(降维、同义词归并、停用词过滤)完成维数约减，使用余弦相似度度量文本之间的相似度，并选择总凝聚度作为目标收敛函数，通过有限次的迭代达到局部最优，输出聚类结果。

The notion of weak fuzzy similarity relations,a generalization of fuzzy similarity relations,is used to represent indiscernibility of elements.

为此提出用模糊相似关系和弱模糊相似关系的概念来代替等价关系，同时引入了弱模糊相似关系的相似度概念和相似类概念，定义了基于弱模糊相似关系的广义粗糙集及标准的广义粗糙集上下近似；研究了两对上下近似算子的性质，讨论了3种粗糙隶属函数的性质并验证了它们的性质。

By taking thecondition into account that the impulsive times are fixed,some criteria are established inSection 3.1 to judge the stability of the systems in terms of two measures.

在§3.1中，考虑了脉冲时刻固定的情形。借助于变异Lyapunov方法、比较原理和逐段连续的Lyapunov函数，我们建立了一些这类系统依照两种测度的稳定性判定准则。

Last, the Eigenenergies of isoelectronic series change against screening parameterλhas been discussed, it's shown that the plasma screening effects are decreasing as nuclear charge increasing.

最后，我们分析了等离子体环境中类氢等电子序列离子的能级和波函数随屏蔽参数λ的变化规律，发现随着原子序数增大，等离子体屏蔽效应的影响逐渐变小。

Hydrophobic-hydrophilic macroporous polydivinylbenzene/polyacrylethylenediamine interpenetrating polymer networks (PDVB/PAEM IPN) were prepared by the sequential suspension polymerization method. These were composed of two networks, of which one was hydrophobic and the other was hydrophilic. The objective of this work was to study the adsorption thermodynamics and adsorption kinetics of this hydrophobic- hydrophilic IPN. The focus was on adsorption isotherms of vanillin at different temperatures, and these fit well into the Freundlich adsorption isotherm. The isosteric adsorption enthalpy, adsorption Gibbs free energies and the adsorption entropy could be calculated according to thermodynamic functions.

采用分步悬浮聚合法制备了具有疏水性能的聚二乙烯基苯(polydivinylbenzene， PDVB)为第一网，具有亲水性能的聚丙烯酰乙二胺(polyacrylethylenediamine， PAEM)为第二网的疏水／亲水大孔聚二乙烯基苯／聚丙烯酰乙二胺互穿聚合物网络(interpenetrating polymer networks， IPN)，研究这类疏水／亲水IPN组成的树脂对吸附质的吸附热力学和吸附动力学；测定了该树脂对香兰素在不同温度下的吸附等温线，吸附等温线符合Freundlich等温吸附方程，利用热力学函数关系计算出了吸附焓、自由能和熵变。

The network monitoring in this system is non- equipment monitoring in LAN and its development is involved with a large quantity of operations in the kernal and relative bottom layer of operation system. The interaction between Client and Server is realized by basing on TCP/IP, Indy and Winsocket technique adopted, Delphi and VC ＋＋ taken as network programming tools, modeling tool ModelMaker used in auxiliary design, class library＇ s code re - building technique used instead of pure procedure functions.

系统所涉及到的网络监控是局域网下的非设备监控，系统的开发涉及到大量的系统内核及其相关的底层操作，基于TCP／IP协议，采用Indy，Winsocket技术，选用了Delphi和VC＋＋作为网络编程开发，利用建摸工具ModelMaker进行辅助设计，抛弃了单纯的过程函数而使用类库的代码重构技术来实现Client端与Server端的交互；结合极限编程设计思想，最大程度地简化程序流程，易于扩展维护。

Although most objects are initialized by running an appropriate constructor, it is possible to initialize the data members of simple nonabstract classes directly.

尽管大多数对象可以通过运行适当的构造函数进行初始化，但是直接初始化简单的非抽象类的数据成员仍是可能的。

Nonstatic functions in the nested class have an implicit this pointer that points to an object of the nested type.

嵌套类中的非静态函数具有隐含的 this 指针，指向嵌套类型的对象。

The split between the two groups can hardly be papered over.

这两个团体间的分歧难以掩饰。

This approach not only encourages a greater number of responses, but minimizes the likelihood of stale groupthink.

这种做法不仅鼓励了更多的反应，而且减少跟风的可能性。