非有效的

The detailed algorithm on analyzing cracks exploration inside blocks is: enriched approximations which describe singular crack tips fields and discontinuous crack faces are employed under the Partition of Unity theory; the enriched nodes surrounding crack tips or faces are respectively mapped with corresponding enriched degrees of freedom, and the solution of all these degrees of freedom is uniformly proceeded by the implicit iteration algorithm of DDA, then fracture and breakage of DDA blocks can be analyzed. The numeric examples show this algorithm is rational and efficient.

为此建立的无网格法裂纹扩展分析算法，采用满足单位分解条件的特殊增强型函数表达裂纹周围应力场的非连续、奇异特性，将对应的扩展自由度动态映射到裂纹周围的节点上，统一按DDA法隐式迭代方式求解，实现块体裂纹扩展和强度分析，相关算例结果显示该算法是合理有效的。

So, our work consists of two major parts: First, we using qualitative and quantitative analysis to prove the effects of monetary policy in non-crisis period is effective and its effectiveness is significant. Second, we analysis the effects of monetary policy in crisis period, especially time slice by means of recurrence method, and do empirical study of each interval sample separately to observe the change of monetary effectiveness.

为此，本文所做的工作主要有以下两点：第一，通过定性分析和实证方法证明在美国经济正常时期，即非危机时期，美国的货币政策是有效的且有效性显著；第二，对次贷危机以来美国的货币政策效应进行分析，以时间递推的方法将危机时期进行分段，并分别进行实证研究观察货币政策有效性的变化。

Since any frequent itemset is a subset of a maximal frequent itemset (an itemset is maximal frequent if it has no superset that is frequent), this paper proposes the DMFI (Discovery of Maximal Frequent Itemsets) algorithm for mining all the maximal frequent itemsets from data sets. This algorithm searches the maximal frequent itemsets in data sets from both bottom-up and top-down directions in the meantime. This paper proposes an algorithm that evaluates the boundaries on the support and confidence of uncalculated itemsets by exploiting the information provided by the calculated itemsets.

本文在经典关联规则的基础上，提出了一系列扩展的关联规则开采算法：发现关联规则的难度体现在发现频繁项目集上，事实上最大频繁项目集（其所有的超集都为非频繁项目集的频繁项目集）的集合已经包含了所有的频繁项目集，本文提出一种发现最大频繁项目集的算法DMFI(Discovery Maximal Frequent Itemsets)，该算法采用自底向上和自顶向下相结合的搜索策略对数据空间进行有效的搜索。

Using augmented Dickey-Fuller test, the result shows that BDI logarithm series is nonstationary but the first difference is stationary, i. e. it is integrated of order one. High-level ARCH effect was certification in the BDI logarithm series by ARCH LM test, and GARCH (1, 1) model was used to eliminate the conditional heteroscedasticity. Through variance ratio test, the result shows, that the random walk hypothesis of BDI logarithm series can be rejected and international dry bulk shipping market is inefficient.

运用ADF检验方法对BDI的对数序列进行平稳性和单整检验，结果证明BDI对数序列是一个非平稳过程，经一阶差分后是平稳过程，即BDI对数序列是一阶单整过程；通过ARCH LM检验认为BDI对数序列存在高阶ARCH效应，并用GARCH(1，1)模型消除了残差序列的条件异方差性；通过方差比检验法对国际干散货航运市场的收益率序列进行了检验，结果显示BDI的对数序列的随机游走假设被拒绝，国际干散货航运市场不是一个有效的市场。

We conclude that in such organizations,(1) designers must strike an ongoing, interactive balance between centric and acentric design orientations and practices,(2) aesthetic consideration is fundamentally important when it comes to crafting effective design, and (3) designing processes should be given as much attention as design solutions.

我们可以得到一些结论，在这样的组织中（1）设计师必须要寻求中心与非中心设计的动态、互动的平衡；（2）要想获得有效的设计，美学思想是相当重要的；（3）应当给与设计过程与设计方案同样多的关注。

KDD is a professional term that began to appear 1989, KDD is from data centralized identifying goes out effective, novel, potential and useful, and the blame of final apprehensible mode is ordinary process.

KDD是1989年开始出现的一个专业术语，KDD是从数据集中识别出有效的、新奇的、潜在有用的，以及最终可理解的模式的非平凡过程。

To reduced to the complexity of chars segmentation, paper brought forward a series of pretreatment methods to the retrieved plate, including using line imitate method and angle detect method to correct the plate"s slope angle, using color projection method to eliminate conglutinative texture edge, and using bi-value image project method to eliminate plate"s rivets and frame.

为了减少字符识别的复杂程度，论文对字符的精确切分也提出了一系列有效的预处理方法，包括基于直线拟合与角度探测法的牌照水平及垂直倾斜校正、基于彩色投影法的牌照背景纹理过滤、基于二值投影阀值处理的非字符区域的剔除等。

"Stereotactic radiosurgery is a noninvasive procedure that effectively treats patients with vascular malformations and brain tumors, but its efficacy for epileptogenic foci is limited, especially in children," write Catalina Dunoyer and colleagues from the University of Miami School of Medicine.

美国迈阿密大学医学院的Catalina Dunoyer，和他的同事们写道：「放射外科学的综合治疗方法是一种非创伤性的技术，可以为那些患有血管畸形和脑肿瘤患者提供有效的治疗，但是它对癫痫病灶的治疗效果是有限的，尤其是在儿童患者。

To develop standard WNV diagnostic tools, four monoclonal antibodies against WNV envelope protein domain III were produced. The isotype, the reactivity with denatured and native antigens, the affinity and specificity of antibodies have been characterized. Two MAbs (4B3 and 2F5) were used to establish an antigen capture-ELISA detection system.

为了建立有效的WNV检测方法，本研究制备了四株抗WNV囊膜蛋白第三结构域的单克隆抗体，鉴定了抗体的亚型、抗体和变性及非变性抗原结合的强度、抗原和抗体结合的亲和力常数，进行了免疫荧光分析、测定了抗原表位竞争、抗体的中和能力等，并检测了上述单抗与日本乙型脑炎病毒的交叉反应情况。

Expanding pinacol reductive coupling reaction into asymmetric one with both diastereoselectivity and enantioselectivity may lead to its application in synthesising medicaments and biologic active compounds with structure of vicinal diol. Asymmetric pinacol coupling reaction is also the most compact and effecient method in synthesizing chiral ligands or chiral auxiliary with C〓 symmetry.

将这一反应发展成为既有高度的非对映选择性，又有高度对映选择性的不对称偶联反应在合成许多含有手性邻二醇结构的药物或生物活性物质将有更重要的应用，同时不对称Piancol偶联反应也是合成C〓对称性的邻二醇多用途手性配体或手性助剂的最为简捷有效的方法。

However, as the name（read－only memory）implies, CD disks cannot be written onorchanged in any way.

然而，正如其名字所指出的那样，CD盘不能写，也不能用任何方式改变其内容。

Galvanizes steel pallet is mainly export which suits standard packing of European Union, the North America. galvanizes steel pallet is suitable to heavy rack. Pallet surface can design plate type, corrugated and the gap form, satisfies the different requirements.

镀锌钢托盘多用于出口，替代木托盘，免薰蒸，符合欧盟、北美各国对出口货物包装材料的法令要求；喷涂钢托盘适用于重载上货架之用，托盘表面根据需要制作成平板状、波纹状及间隔形式，满足不同的使用要求。