强仿紧、仿紧和弱仿紧T_1扩张

How Grids Matter – Energy-Aware Routing in Wireless Sensor Networks

This paper addresses the issue of the energyawareness and interference in wireless sensor networks (WSNs). We adopt a 2-dimensional grid clustering mechanism, in which cluster-heads are rotated evenly among all sensor nodes. In addition to transmitting and receiving packets within the electrical and amplification circuit, extra energy is needed in the retransmission of packets due to interferen...

仿趙氏音高尺度之基週軌跡正規化方法及其應用 (A Pitch-Contour Normalization Method Following Zhao's Pitch Scale and Its Application) [In Chinese]

[New broncoscope techniques for the early diagnosis of central lung cancer.].

CT仿真支气管内窥镜是一种气道三维(3D)成像新 技术,其方法是用薄层螺旋CT扫描数据重建成模拟气 道影像,CTVB能连续观察管腔内表面,将观察点置于气 管、支气管内,任意在管腔内探查和漫游,并能深入到 较大的亚段支气管内,能观察到酷似支气管镜所见的影 像。所示图像直观而生动,可进入5-7级支气管,可通 过重度狭窄对远端支气管进行观察,这种非侵入性的成 像技术己成为评价气道病变的新方法,可充分显示累及 气道的两类病变:一类为发生于气道腔内的病变,另一 类为气道周围病变对气管造成压迫与浸润改变。 中央型肺癌CTVB的表现有两种,第1种表现为狭 窄,包括肿瘤向管腔内突出呈息肉状或结节状、肿瘤沿 管腔浸润性生长引起管腔向心性狭窄、管腔外肿瘤或淋 巴结肿大压迫支气管导致管腔偏心狭窄、变形或移位; 第2种表现为闭塞,肿瘤向腔内生长致管腔完全闭塞。 CTVB的优点是:1为非侵入性检查、安全、患者...

Constructing Subdivision Curves on Manifolds with Conformal Mapping ZHU Wen-ming, DENG Jian-song, CHEN Fa-lai

Curve design on manifolds is very important in many applications. We propose a curve subdivision approach based on conformal mapping of manifolds. It is proved by experiments that the resulting curves in some sense have nice smoothness and inherite some properties of subdivision curves in 3 R space, such as the curves might interpolate or approximate the initial points. Some examples are provid...

[Research strategy and clinical significance of anorectum manometry].

1 .1 直肠肛门抑制反射 正常生理情况下 , 直肠扩 张由大脑皮层控制 , 在粪便通过直肠引起直肠扩张 后引起 肛 门内 括 约肌 ( in ternu s anal sphincter , IAS) 反射性舒张。Pfefferkorn 等 [ 1 ] 报道 80 例儿童 在全 麻状 态下 仍然 能测 出直 肠肛 门抑 制反 射 ( rectanal inhibitory reflex , RAIR ) , 由此可推 测 RAIR 可能是低级反射中枢完成的。在一般情况 下 , RAIR 都能测出。国内外目前的标准尚不统一 , 但一般认为气囊 50 ml 仍不能引出 RAIR , 看作 RAIR 消失 ;若 30 ml≤气囊≤50 ml 看作 RAIR 减 弱。在以下 病理情 况下 , RAIR 可 消失 或减弱 : (1 )先天性巨结肠 ( Hirschsprung’s disea...