Ningbo yongtai plastics machinery co , . ltd is specialized in the production of 100 - 3000 g hot plastic injection machine of yt and ytf series and high - pressure pumps for oil - field and measuring pumps . the factory has the ability to manufacture more than 1500 plastic injection machine , 500 high - pressure pump and over 800 measuring pumps annually 宁波永泰塑料机械有限公司专业生产yt ytf系列100 - 3000克热塑性塑料注射成型机油田用系列高压泵和各类计量泵等，已形成年产注塑机1500余台高压泵500余台计量泵800余台的生产规模。
Ningbo yongtai plastics machinery co , . ltd is specialized in the production of 100 - 3000 g hot plastic injection machine of yt and ytf series and high - pressure pumps for oil - field and measuring pumps . the factory has the ability to manufacture more than 1500 plastic injection machine , 500 high - pressure pump and over 800 measuring pumps annually . covering an area of 30 thousand square meters , the factory is equipped with advanced processing machines 宁波永泰塑料机械有限公司专业生产yt 、 ytf系列100 - 3000克热塑性塑料注射成型机、油田用系列高压泵和各类计量泵等，已形成年产注塑机1500余台、高压泵500余台、计量泵800余台的生产规模。
The second part includes the analysis of foreign & domestic mobile phone sales mode ' s development and status quo , especially the introduction of foreign mobile virtual network operator ( mvno ) and the analysis of domestic cdma sales mode ' s market background . with the introduction of yt company ' s background , the third part analyzes the yt company ' s organization , product , sales mode , management system and cooperation relationship with china unicom , and concludes the yt company ' s request for sales mode on the basis of swot analysis of yt company . the forth part bring forward that yt company should choose menno ' s sales mode as its developing direction , and analyze some problems ( such as the cooperation relationship with china unicom ) in the course of operating mvno and the detailed procedure of how to develop menno ' s sales mode 第一部分从理论上对如何进行销售模式的科学选择、目前四种主要的销售模式的分析研究以及销售模式的发展创新情况进行了分析；第二部分对国内外手机销售模式应用情况的发展和现状进行了分析，特别对国外移动虚拟网络运营商的销售模式做了介绍和研究，也对国内c网手机目前采用的销售模式的背景情况做了分析；第三部分结合yt公司的背景介绍，对其组织结构、代理的产品、销售模式、管理制度、与联通的合作关系等方面进行了分析，并综合这些方面对yt公司进行了swot的分析，从而归纳出了yt公司对销售模式的一些要求；第四部分从前面的分析中，提出了yt公司应选择mvno (移动虚拟网络运营商)的销售模式作为自己的发展方向，并就该销售模式具体实施中的问题(如与中国联通的合作关系处理)和流程进行了详细的分析。
This model is a class of ev model . in this model , regression function that variance yt is about is nonlinear , is not measureable directly and the measurable directly is x , that is errors - in - variance . the method of estimation is more difficult than the usual because x is not measurable directly 本模型属于一类半参数的ev模型，它表明变量y _ i关于( x _ i ， t _ i )的回归函数呈偏线性的形式，且变量x _ i不能直接观测到，所能观测到的是受了误差变量u _ i干扰的变量x _ i ，由于x _ i不能直接观测到，这使得估计的困难加大。
A important result is the one - orde r expression of ar ( p ) yt = dyt - 1 + e , from paralleling a high - order differential equation transformation into a one - order differential equation system , the one - order expression exposes that the ar ( p ) is only a certain more - multivariable power series process and , if a process is described as an ar ( p ) , the sufficient and necessary condition is the spectrum norm a of the coefficient matrix d less than one . simplification of ar ( p ) not only brings about orthogonal f ( h ) but also provides global foretelling formula 作者用高阶微分方程化一阶微分方程组的方法，获得多元弱平稳序列p阶自回归模型的一步滑动平均表达式，证明了ar ( p )的是一个更高维的幂级数的线性过程，从而，说明了ar ( p )关于序列依概率成立的充要条件是：该模型更高维的幂级数的线性过程的表达式中系数矩阵d的谱范数1 。
The consumption function is as follows : ct = 1 s t + 2rt + yt this model contacts consumption to income and wealth together . 1 、 2 and are marginal prefer coefficients ( mpc ) of the stock wealth , the real estate wealth and the income respectively . the estimation of coefficients indicates the fortune would increase along with the expending of consumption 协整及误差修正模型研究结论表明,我国房地产市场对总消费支出具有显著的、较大的影响;我国股票市场的财富效应比较微弱,房地产市场的财富效应远大于股票市场的财富效应;并且随着时间的增长,资产的财富效应渐强。
