查询词典 distance

First,the distance ratio between within-class and between-class of each column of mixing matrix is computed by using a distance measurement.Then,for each class,the mixing matrix and independent components are re aligned by sort ascending according to the distance rate,and the columns of the weight matrix with smaller distance ratio and the corresponding features are reserved.Finally,the best feature set is selected by genetic algorithm from these foregoing feature vectors.

首先，使用一种距离度量来计算混合矩阵每一类的类内类间距离比；然后对每一类按该比值由小到大重新排列混合矩阵和独立分量，保留权重矩阵中类间类内距离比大的列，及其对应的特征向量；最后对这些特征向量使用遗传算法选择最优特征组。

CT scan: width of groove of sigmoid sinus, Depth of GSS, the distance from the lateral wall of GSS to the surface of mastoid process, the distance from the anterior wall of GSS to the posterior wall of external auditory meatus, the distance from the most lateral portion of posterior semicircular canal to the surface of mastoid process, the distance from the most lateral portion of PSC to the anterior edge of GSS, the distance from the most posterior portion of PSC to the posterior pyramidal wall was (11.44±1.79) mm,(5.27±193) mm,(1038±390) mm,(1366±218) mm,(13.44±1.8) mm,(9.65+1.76) mm,(2.92±0.98) mm respectively B.

后半规管最外侧至乳突外表面的最近距离是(13.44±1.86)mm，至乙状窦沟前缘的距离是(9.65±1.76)mm，其最后部至岩骨后壁的距离是(2.92±0.98)mm。

The park area lies in the communications center of the development zone of economy surrounding Bohai and it locates at the core zone of Tianjin Binhai New Area; it is only separated from the Tianjin Economic-Technological Development Area by a river and it is near to the Tianjin Environmental City; the distance between park area and the central urban area of Tianjin is 50 kilometers and the distance to Beijing is 120 kilometers; the distance between the park area and Tianjin Binhai International Airport is 40 kilometers and the distance to Tianjin Harbor is 21 kilometers and 35 kilometers to Caofei Dian Harbor; the traffic around it is very convenient and there are more than ten highways passing through it, i.e.

园区位于环渤海经济发展带之要冲，地处天津滨海新区核心地带，与天津经济技术开发区仅一河之隔，毗邻中新天津生态城；园区距天津中心城区50公里，距北京120公里，距天津滨海国际机场40公里，距天津港21公里，距曹妃甸港35公里，周边交通便利，京津城际铁路、京秦客运专线、津滨轻轨和京津塘高速、京津高速、唐津高速、海滨大道、津滨高速等十余条高速公路环城而过，特别是津汉快速路、塘汉快速路和京山铁路直达园区，使园区内外沟通快捷方便。

We can take Fourier transformation or Laplace transformation towards try to of square distance both ends according to the their lines property, differential calculus property and integral calculus property, its conversion for act for of elephant function square distance, from this algebra square the distance beg an elephant function, then take Fourier negative transformation or Laplace negative transformation have to originally square distance of solution.

我们可以根据他们的线性性质，微分性质和积分性质，对欲求的方程两端取Fourier变换或Laplace变换，将其转化为象函数的代理方程，由这个代数方程求出象函数，然后再取Fourier逆变换或Laplace逆变换就得出原来方程的解。

The distance from medial sulcus to the distal joint line is 25.7 mm, the distance from lateral epicondyle to the distal joint line is 24.6 mm. The distance from medial sulcus to the posterior joint line is 29.1 mm, the distance from lateral epicondyle to the posterior joint line is 23.6 mm.

各参考点到关节面的距离也与西方人不同，股骨内髁凹穴、外上髁到远端关节面的距离分别是25.7 mm、24.6 mm ；股骨内髁凹穴、外上髁到后侧关节面的距离分别是29.1 mm、 23.6 mm。

The merit of the invention are: 1 adopting free curved surface imaging method , three part reflection type Zernike polynomial free curved surface forms short focal distance bigger, relative apertures bigger fields of view angle imaging , rectifying optical aberration much better and its structure is simple; 2 adopting the reflection structure without optical lens, has removed the effect of various chromatic aberration , guarantee the imaging articulation; 3 adopt the design of short focal distance big fields of view angle, focal distance 8 - 15 mm, field of view angles 100 -135 degree, having 120 times multiplications under 250 mm imaging distance, having ultra-thin characteristic property; 4 adopting big relative apertures design ,the relative aperture is 2.0-2.4, having improved the illuminance of flat surface; 5 adopting image space telecentric imaging method , ensures that the image surface irradiance is homogeneous.

本发明的优点是：1采用自由曲面成像方法，三片反射式Zernike多项式自由曲面形成短焦距大相对孔径大视场角成像，更好地校正像差，结构简单；2采用无透镜形式的反射式结构，消除了各种色差影响，保证成像清晰度；3采用短焦距大视场角设计，焦距8～15mm，具有100～135度的视场角，在250mm成像距离下有120倍的放大倍数，具有超薄特性；4采用大相对孔径设计，相对孔径为2.0～2.4，提高像平面上的光照度；5采用像方远心成像方法，保证像面辐照度均匀。

A generalized Gaussian Laplacian eigenmap algorithm based on geodesic distance is proposed,which incorporates geodesic distance and generalized Gaussian function into the original Laplacian eigenmap algorithm.GGLE algorithm can adjust the similarities between nodes of neighborhood graph,and can preserve the different degrees of local properties by using super-Gaussian function,Gaussian function or sub-Gaussian function.Moreover,GGLE can avoid the deficiency of Euclidean distance by using geodesic distance when neighborhoods of data points are enlarged for preserving more neighborhood relations.Experimental results show that the global low-dimensional coordinates obtained by GGLE have different clustering properties and different degrees of preserving local neighborhood structures when different generalized Gaussian functions are used to measuring the similarities between high-dimensional data points.(3) An ensemble-based discriminant algorithm based on GGLE is proposed.

该算法将测地线距离和广义高斯函数融合到传统的拉普拉斯特征映射算法中，可以调整近邻图结点间的相似度，通过选择超高斯、高斯或者次高斯函数来实现不同程度的近邻局部特性的保持；而且当需要保持更多的近邻关系使得数据点邻域增大时，采用测地线距离可以避免欧氏距离度量不合理的缺陷；实验结果表明在用不同的广义高斯函数度量高维数据点间的相似度时，局部近邻结构保持的程度是不同的，GGLE获得的全局低维坐标也呈现出不同的聚类特性。

Methods: The following measurements were obtained using a slidin g gauge and ophthalmostatometry on children 5～17 years of age: The anthropometr y of interpupillary distance, inter outer canthal distance, inter oto bsion superius distance, length of nose, inter alare distance , frontal angle, distance between otobsion superius and outer canthus, and exophthalmus.

对厦门市5～17岁儿童少年2600人以电子数显游标卡尺、弯脚规和Hertel眼球突出计进行了瞳孔距离、眶距、耳根上点眶距、耳根上点间宽、眼球突出度、鼻高、鼻宽和鼻基根角的活体测量。

During open/close movement, the distance of condylar movement is smaller than normal occlusion(P.05). During protrusion/retrusion movement, protrusion extent increase,the distance of condylar movement is bigger than normal occlusion(P.05). During lateral excursion, the trace in sagittal plane of the non-working side condyle is more incline than protrusion movement trace and the distance of the left non-working side condylar movement is larger than the right. During mediotrusion/right movement, the left biggest space distance is larger than normal occlusion and the transversal condylar inclination is smallar than normal occlusion when the distance of condylar movement is 5mm, the difference is statistically significant.

在开闭口运动时，双侧髁突运动幅度减小、位移量小于正常牙合者(P.05)；前伸后退运动时，前伸幅度增加，位移量大于正常牙合者(P.05)；侧方运动时，非工作侧髁突在矢状面上的轨迹较前伸轨迹向前下方倾斜度增加，非工作侧髁突空间位移左侧大于右侧，向右侧方运动中，左侧髁突空间位移大于正常牙合者，髁突位移5mm时水平面髁突倾斜度小于正常牙合者，差异有统计学意义。

He was a major contributor to The distance teaching universities (1982), joint editor of Distance education: international perspectives (1983), joint editor of L'università a distanza. Riflessioni e proposte per un nuovo modello di università(1984), editor of Theoretical principles of distance education.(1993), joint editor of Distance education: new perspectives (1993), editor of The industrialization of teaching and learning (1994). In 1997 the European Commission in Brussels published his Distance training in the European Union .

在整个学习过程期间，教师和学生处于准永久性分离状态（以此与常规面授教育相区别）；教育组织在材料计划、准备和学生支持服务准备两方面的影响（以此与个别学习和自教计划相区别）；技术媒体（印刷媒体、视听媒体或计算机媒体）作为课程内容的载体，把教师与学生联系起来；提供双向通信，使学生可以主动对话并从对话中受益（以此与教育技术的其他应用相区别

Neither the killing of Mr Zarqawi nor any breakthrough on the political front will stop the insurgency and the fratricidal murders in their tracks.

在对危险的南部地区访问时，他斥责什叶派民兵领导人对中央集权的挑衅行为。

In fact,I've got him on the satellite mobile right now.

实际上 我们已接通卫星可视电话了