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After power-law being represented,some network topology models emerge.But these models do not involve any reference to underlying geometry.In order to solve this problem,this paper proposes an improved network topology model based on heuristically optimized trade-offs,which generates topology with the power of law,and has an appropriate amount of leaf nodes.It is closer to the real characteristics of the Internet.

幂法则提出以后，出现了一些符合幂法则的网络拓扑模型，但是这些模型没有充分考虑到底层节点的几何排列，针对这种情况，提出了一种改进的&启发式最优化平衡&网络拓扑模型，生成的拓扑图符合幂法则规律，且具有适当数量的叶子节点，更加接近互联网真实特征。

Objective To explore the effect of erythropoietin on primary cultured hippocampal neurons with hypoxia as well as its underlying mechanism.

目的 探讨促红细胞生成素对低氧条件下原代培养的海马神经元凋亡的影响及其可能机制。

Although the study of a series of genes including the homeotic family has yielded remarkable insight into the molecular mechanisms underlying the development of brain regarding both human and related model organisms, a great number of novel genes remain to be investigated.

虽然含同源异型盒的基因家族等一系列基因在胚胎脑组织的表达特征及有关功能已被阐明，迄今为止，大量与人脑发育、分化相关的基因尚属未知。

Considering the underlying wall deficiency and the homodynamic stress, the Robiesek operation should be an optimal choice to those patients with a mild to moderate dilated ascending aorta caused by aortic valve lesion.

由于主动脉壁本身存在病理改变和血液动力学冲击，为防止远期升主动脉进一步瘤变或夹层形成，对以主动脉瓣病变为主的轻、中度主动脉根部扩张采用Robicsek术更为合理。

The combination of cerebral hypoperfusion and hypercoagulability in sleep apnea disorder may be the underlying pathophysiological mechanism for increased risk of stroke in this population.

睡眠呼吸暂停时的脑灌注不足和血液的高凝状态是这组人群脑血管病危险性增高的病理生理学基础。

The results of a population-based study have shown that new onset of hyperglycemic diabetes in adults 50 or older may be a sign of underlying pancreatic cancer.

根据一项人群调查研究的结果提示，在50岁或更大年纪新发生的胰高血糖激素糖尿病，或许是胰腺癌潜在可能的一个指标。

PURPOSE: To investigate the mechanism underlying hyperopic orthokeratology by comparing the short-term clinical effect of lenses before and after central lens fenestration.

目的：通过比较镜片中央开窗术前后镜片的短期临床疗效，探讨远视角膜矫正术的机制。

The relationship between expressions of p53, CD44-V6, Ki67 and recurrence, malignancy was analyzed statistically. Results This paper present 47 cases of NIP. The fundamental histopathologic feature was marked hyperplasic of covering epithelium, which extended into the underlying mucosa, forming subepithelial crypts or solid epithelial nests connected with the surface epithelium.

对47例NIP病例的的临床特点、组织学形态进行观察与相关性分析并采用免疫组化方法对其中28例具有随访资料的病例检测其p53、CD44-V6、Ki67表达，选择鼻腔乳头状瘤、鳞癌各10例进行对照。

To analyze and compare the characters of Fuzzy c-Means clustering and artificial immune network aiNet clustering, conclude that Fuzzy c-Means clustering does not work well if the underlying classes or clusters deviate strongly from hyperspherical structures, aiNet is capable of reducing redundancy, describing data structure, including the shape of clusters by experiments on relatively gathering data set, scattering data set, annular data set and corkscrew data set.

分析比较了模糊C 均值聚类算法FCM 和人工免疫网络aiNet 聚类算法的特性，通过它们对相对集中数据、稀疏分散数据、环状和螺旋分布数据聚类来进行比较，得到当遇到潜在的类或簇背离超球面结构时，FCM 算法表现不佳，而aiNet 可以很好的发现数据的内在特征，减少数据中的冗余、描述数据结构和聚类形状，表现良好的适应性。

The majority of the cases had underlying diseases (68%) and presented with abdominal pain (85%), abdominal fullness (65%); abdominal tenderness (85%), abdominal distension (63%), hypoactive bowel sounds (58%); leukocytosis (78%), anemia (70%), increased blood urea nitrogen (93%), serum creatinine (78%) and AST levels (58%) and metabolic acidosis (60%); dilated bowel loops (82%), thickened bowel walls (82%), ascites (62%) and pneumatosis intestinalis (59%).

大部分患者具有心血管疾病或癌症(68%)，并具有腹痛(85%)及肠蠕动音减少(58%)之徵候；白血球增高(78%)、血红素下降(70%)、尿素氮值增高(93%)、肌肝酸值增高(78%)、代谢性酸中毒(60%)及AST值增高(58%)之实验室检查异常；肠管扩大(82%)、肠壁增厚(82%)、腹水(62%)及肠壁内含气体(59%)之电脑断层发现。

This one mode pays close attention to network credence foundation of the businessman very much.

这一模式非常关注商人的网络信用基础。

Cell morphology of bacterial ghost of Pasteurella multocida was observed by scanning electron microscopy and inactivation ratio was estimated by CFU analysi.

扫描电镜观察多杀性巴氏杆菌细菌幽灵和菌落形成单位评价遗传灭活率。