物换星移,沧海桑田,一个影响我们经济、社会、观念、生活的重大事件发生了一—入 世。中国加入世界贸易组织之后,中国经济融入全球经济一体化,食品行业的竞争环境将如 何改变?入世将给功能性食品产业带来哪些冲击和希望? 显然,功能性食品作为食品行业的重要组成部分,必然会受到入世的影响,但我们应 当有一个清醒的认识,机遇和挑战是并存的入世将使我国功能性食品产业处在一个激烈竞 争的环境之中,这种冲击迫使我们更新观念,调整体制,转换机制,加速发展,促进和世界 各国的交流与合作,加快功能性食品发展的进程

一、饭店业是全球性的行业 1.是凭借旅游资源进行开发经营的,竞争激烈 2.经营管理方面颇具相同特点 3.服务没有专利权

Class expectations This is a graduate level class. There is no final exam Grading in the class is based on homework (75%) and on a final written report(25%) The report will be revised during semester and should be 2000-3000 words(8-10 double spaced pages)

Gravitational potential In spherical coordinates: need to solve

Treat the basic description and dynamics of satellite orbits Major perturbations on GPS satellite orbits · Sources of orbit information: -SP3 format from the International GPS service Broadcast ephemeris message

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

Summary · Review: -Examined definitions of pseudorange and carrier phase Looked at some actual raw measurements from a RINEX file Today we look at:

Statistical approach to estimation Examine the multivariate Gaussian distribution: (x-)\v-(x-) Multivariant f(x)= Minimize (x-u)'v(x-u) gives largest probability density By minimizing the argument of the exponential in the probability density function, we maximize the likelihood of the estimates(MLE)

Specific common processes White-noise: Autocorrelation is Dirac-delta function; PSD is flat; integral of power under PSD is variance of process(true in general) First-order Gauss-Markov process (one of most models common in Kalman filtering)

Basic atmospheric structure mosphere Troposphere is 2 100 where the temperature stops decreasing in the tmosphere(10 km altitude)