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Based on genetic algorithm,a new hybrid coding method using the integer and floating number was presented. The enumerable method guarantees each individual in the population to satisfy the constrains, thus the punishment function was avoided. The two adjustable parameters made the evolution process jump out of the local best solution perfectly.The application of the fitness assignment based on Pareto ranking attained inferior solution set of the multi-objective and multiple options were provided to the decision-maker.

设计了一种新的整数和浮点数结合的编码方式;通过列举法使得每代个体满足约束条件,避免了罚函数的使用;可调整的双参数变异算子使进化过程能够较好地跳出局部最优解;应用基于Pareto排序的适应值分配方式得到目标函数的非劣解集,为决策者提供了多种选择方式。

On the aspect of error compensation, the system using the geometric average sound pressure instead of the arithmetic average sound pressure to get the sound pressure of the measurement point. This method not only reduces the high frequency error in the sound intensity measurement, which compensates the finite difference approximation error, but also greatly reduces the computation of the sound pressure spectrum.

误差补偿方面,课题采用几何平均声压代替通常的算术平均声压来计算双传声器法的声场声压值,这样不仅可以有效的减少声强测量中的高频误差,对有限差分误差起到了补偿作用,而且还大大减小了声压谱计算中的计算量。

The GKS stability theorem for one-dimensional model of hyperbolic initial and boundary value problem, Trefethen's explanation and extension based on the concept of group velocity are generalized firstly. Another possible high-frequency instability mechanism in numerical realization of MTF is pointed out based on his explanation and extension, namely, coupling effect of outgoing harmonic wave along one direction and node motion in the other directions can reverse the energy propagation in multi-dimensional discrete grids.

本文概述了—维双曲型偏微分方程组初边值问题数值稳定性的GKS定理及Trefethen基于群速度概念对这一定理的解释和推广;并应用Trefethen的解释和推广指出了MTF在数值实现中可能出现的另一种高频失稳机制,即在多维离散网格中,沿某一空间方向的外行简谐波,由于与其他空间方向节点运动的耦合效应可以使能量传播方向反向。

The present study applied fuzzy theory and Fuzzy MCDM to build a strategy which utilizes Fuzzy MCDM for accessory negotiation. This strategy calculated every accessory's fuzzy evaluation and negotiation insistency for selection and negotiation. At last, a shopping website with the function of accessory negotiation was built on the Internet in the expectation that it can make progress in both buyers' satisfaction and sellers' earnings.

因此本研究运用模糊理论与Fuzzy MCDM的机制与方法,建立Fuzzy MCDM为附属品的协商机制之策略,计算出各附属品的模糊评估值与协商坚持度,以为遴选之依据与协商之准则;最后在网路上实作建置一个具有协商附属品功能的购物网站,藉由系统的建立期能获取消费者满意度且成就商家的营业收入之双重利基。

A simultaneous dual-wavelength continuous wave, quasi-cw or linearly polarized wave diode-end-pumped Nd:YAG laser operating at 1319nm and 1338nm is demonstrated. To the best of our knowledge, our experimental results achieve the highest level in the domestic domain. The simultaneous dual-wavelength laser provides an experimental basis for generating highly coherent THz wave radiation of 3.23THz by nonlinear optical difference frequency method.2. A diode-end-pumped Nd:YAG crystal, type-I critical phase matching LBO crystal intra-cavity frequency doubled, simultaneous multi-wavelength red laser at 659.5nm, 664nm and 669nm is firstly realized.

本论文主要围绕用于差频产生THz辐射源的多波长激光器及THz光子晶体的带隙特性分析而展开,论文的主要内容包括:一、从LD端面泵浦固体激光器的激光阈值公式出发,理论计算了腔镜对于两个波长的透过率关系,实现了LD端面泵浦Nd:YAG 1319nm/1338nm双波长激光连续、准连续及线偏振稳定输出。

To evaluate the relationship between concentrations and electroencephalographic indices, two different pharmacodynamic models were applied: a conventional model based on a single sigmoidal curve, and a novel model based on two sigmoidal curves for BIS and NCT values with and without burst suppression.

为了评价浓度和脑电指数的关系,我们使用了两种不同的药效学模型来记录有和没有爆发性抑制时的 BIS 和 NCT 值:一种是基于单 S 型曲线的传统模型,另一种是基于双 S 型曲线的新型模型。

Experiments show that C-B spline curve, uniform B-spline with shape parameter, hyperbolic polynomial uniform B-spline with shape parameter and trigonometric polynomial uniform B-spline with shape parameter can be used to produce some frequently used free form curves in the industrial field when the shape parameter is assigned with some specific values. This process is simpler than producing these free form curves by using controlling vertex.

实验证明,C-B样条曲线、带形状参数的均匀B样条曲线、带形状参数双曲多项式的均匀B样条曲线、带形状参数三角多项式的均匀B样条曲线都可利用形状参数的特定取值表示一些工业领域常用的自由曲线,这比起用控制顶点表示同样的自由曲线更为简单。

In this paper we've compared several predicate of first order operators, and proposed an improved algorithm which is based on the automatic double threshold value improvement algorithm based on the maximum inter-cluster distance and intra-cluster variance ratio.

在边缘检测算法的选择上,比较了几种常用的一阶微分算子的优劣,并在Canny算子的基础上提出了基于最大类间、类内距离比值的自动双阈值改进算法。

The available operation range in clivus and anterior cranial base by transsphenoidal opproach was also observed during the operation under the help of neuronavigational pointer. Forty-one patients underwent sublabial, transseptal, transsphenoidal approach to the pituitary region guided by Surgical Microscope Navigation was studied. The piriform aperture was 27. 2mm±3. 1 , the origin of inferior nasal concha 30mm±4. 1, the origin of middle nasal concha 27. 9mm±4. 3. These data are important for transsphenoidal approach, because the piriform aperture and the origin of both inferior and middle nasal conchas restricted the opening width of the Hardy specula. If any distance of these bony structures was much less than the mean one, may cause inadequate opening of the specula blade and resulting dissatisfied operative field. Microadenomas or cystic tumors perhaps can be operated even in a narrow exposure, but large or giant solid adenomas may need a proper evaluation including changing the operative approach or performing a bilateral submucous inferior conchotomy or posterior ethmoidectomy firstly.

手术中还利用CT导航系统观察棒研究了经口—鼻蝶窦入路在斜坡区和前颅底能够达到的实际有效操作范围,为扩大经蝶窦入路手术在斜坡区和前颅底的应用奠定基础,在国内外尚未见同类报道。41例垂体瘤患者梨状孔平均宽度27.2mm±3.1,下鼻甲根部附着处间距30mm±4.1,中鼻甲根部附着处间距27.9mm±4.3,这是经口—鼻蝶窦入路手术中,对Hardy双瓣鼻窥器张开限制的主要骨性结构,若患者这些径线值明显小于平均值,则可能因为鼻窥器打开不充分而影响手术暴露,当然对于垂体微腺瘤和以囊变为主的垂体瘤可能影响不大,但对于大和巨大垂体瘤必须要有充分的准备,包括评估是否改用其他入路,或先行鼻甲切除再行经蝶手术。

E., monodentate,bidentate and complicated multidentate chain-structured or web-structured CIPs.

利用曲线拟合技术对其光谱的ν1-SO峰进行分峰,获得了不同湿度下ZnSO4微液滴中各组分的量化信息:高湿度时,液滴中主要包含自由的水合SO;随着湿度降低,自由SO逐渐向单齿、双齿接触离子对转化,并在湿度为66%和34%时分别达到其最大值;继续降低湿度,复杂的链状或网状接触离子对逐渐成为液滴中的主要成分。

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推荐网络例句

On the other hand, the more important thing is because the urban housing is a kind of heterogeneity products.

另一方面,更重要的是由于城市住房是一种异质性产品。

Climate histogram is the fall that collects place measure calm value, cent serves as cross axle for a few equal interval, the area that the frequency that the value appears according to place is accumulated and becomes will be determined inside each interval, discharge the graph that rise with post, also be called histogram.

气候直方图是将所收集的降水量测定值,分为几个相等的区间作为横轴,并将各区间内所测定值依所出现的次数累积而成的面积,用柱子排起来的图形,也叫做柱状图。

You rap, you know we are not so good at rapping, huh?

你唱吧,你也知道我们并不那么擅长说唱,对吧?