群集

For facilitating the delineation of hydrologically homogeneous regions, the purpose of this thesis is to develop a method that combines cluster analysis and discrimination analysis.

本文的目的在於发展一整合群集分析及识别分析的方法，以改进水文均一区划分的方法。

The conventional method for the delineation of hydrologically homogeneous regions consists of three complicated statistical techniques (principal component analysis, cluster analysis, and discrimination analysis).

过去，水文均一区的划分是透过三种复杂的统计技术（包含主成分分析、群集分析及识别分析）的结合而完成。

Among these three methods, principal component analysis is not necessary; a large amount of severe problems (such as the determination of the number of clusters) encountered in the delineation of hydrologically homogeneous regions arise in conventional clustering methods and the employ of discrimination analysis is not intuitional.

在这三种统计技术中，主成分分析并非划分水文均一区必要的步骤；大部份关於水文均一区的划分的问题则存在於传统的群集分析方法中；而识别分析在水文均一区划分中的用法则并不直觉。

Results High dense renal cyst is usually homogeneous hypoechogenicity on sonograms and homogeneous high/iso attenuation on CT images and color doppler is helpful in diagnosing.Atypical angiomyolipoma usually shows homogeneous high attenuation on unenhanced CT images,homogeneous enhancement on enhanced CT and homogeneous isoechogenicity on sonograms.The CT features of Xanthogranulomatous pyelonephritisinclude multiple,rounded,low density areas with enhancing rings arranged in a hydronephrotic pattern known as bear paw sign.Acute focal bacterial nephritisshows wedge lesion and stripe sign on delayed enhanced CT images.

结果 高密度肾囊肿常表现为B超均匀低回声，CT均质或高密度灶，彩色多普勒超声有助诊断；不典型肾血管肌脂瘤常表现为B超均匀回声，CT平扫均质高密度且均匀强化；黄色肉芽肿性肾盂肾炎的特征是CT示群集的类圆形的低密度区以及环形增强带形成&熊掌征&；急性局限性细菌性肾炎的CT延时增强扫描以及动态观察显示楔形病灶以及条纹征，并随治疗逐渐消退。

Furthermore, many active members of this swarmy system are not individual human intelligences; they are corporate entities, groups, institutions, technological systems, and even the nonbiological systems of the Earth itself.

不仅如此，在这个群集性的系统中，很多活跃的成员根本就不人类个体的智能；他们是企业、集团、机构/制度、技术系统，甚至还包括地球本身的那些非生物系统。

Furthermore, many active members of this swarmy system are not individual human intelligences; they are corporate entities, groups, institutions, technological systems, and even the nonbiological systems of the Earth itself.

不仅如此，在这个群集系统中，很多活跃的成员根本就不是个体人类的智能；他们是企业实体、团体、机构/制度、技术系统，甚至还包括地球本身的那些非生物系统。

Furthermore, many active members of this swarmy system are not individual human intelligences; they are corporate entities, groups, institutions, technological systems, and even the nonbiological systems of the Earth itself.

不仅如此，在这个群集性的系统中，很多活跃的成员根本就不是人类个体的智能；他们是企业、团体、机构/制度、技术系统，甚至还包括地球本身的那些非生物系统。

Since the algebraic limit G of discretegroup sequence 〓 may be nondiscrete and nonelementary,we must add someconditions for the study of the relationship between the group sequence 〓 of〓 and its algebraic limits.

在第一章中，我们研究〓上的〓变换群集〓和其代数极限G的关系。

Just hatched nymphae\'s,had the aggregated habit,the most nymphaes often gathered in together,crawled to the host cactus\'s peak,sought the new stem piece, derived the new nutrition.

刚孵化的若虫，具有群集习性，多数若虫常聚集在一起，爬到寄主仙人掌的顶端，寻找新的茎片，以汲取新的营养。

Any of several gregarious toothed whales of the genus Phocaena and related genera, of oceanic waters, characteristically having a ''.

鼠海豚一种鼠海豚属小型群集齿鲸，其共同特点是生活于海洋中，生有''。

In the United States, chronic alcoholism and hepatitis C are the most common ones.

在美国，慢性酒精中毒，肝炎是最常见的。

If you have any questions, you can contact me anytime.

如果有任何问题，你可以随时联系我。