腹泻病的定义 是指由于各种不同原因引起临床以 腹泻为主的一种胃肠道紊乱综合征。 本病发病率居小儿感然性疾病中的 第二位,仅次于上呼吸道感染 1986-1988年七省一市三年逐月调查5 岁以内小儿30万人次结果表明:

定义 感染性休克: 细菌、病毒、真菌、立克次体等致病微生物感染引起 的急性循环功能不全,是内因、外引和医源性因素构 成致病网络,机体由SIRS、严重败血症发展为MODS过 程的急性循环衰竭,病死率40%

Fundamental knowledg Quick Overview Kelperian 3 Laws First Law: ellipse, Sun is a focus Second law: the same area in same time Earth

GPS Basic Positioning Principle Two reference systems: Time and Coordinate Syst

3. Reference Systems Book: p 25-38 Dr Guoqing Zhou 1.1 Overview 1.2 A Group of Basic Ce GPS Basic Positioning Principle

Today's Lecture Examine specifics of GPS signals Multiple modulations on same carrier signal Structure of signals GPS receiver operation and satellite acquisition

Perigee and Apogee: The point of closest approach of the satellite with respect to the earth's center of mass is called perigee and the most distant position is the apogee. Nodes: The intersection between the equatorial and the nit sphere is termed the nodes, where the ascending node defines the northward

1. 1 Error Categories 1. Errors related to GPs Satellites 2. Errors related to GPS signal propagation

1.1 Terminology Definitions 3. Point Positioning ys. Relative positioning The coordinates of a single point are determined when 1. Code Range vs, Carrier Phase Code measurements(meter level) Carrier phase measurements(millimeter range). Single point positioning

1.1 Data Handling 1. 2 Cycle Slip Detection and Repair