Our task How to estimate and test discount factor model. Ep,=E(m (data 1, parameter)) 1. Bring an asset pricing model to data to estimate free parameters. For example, parameter,yinm=B(c+1/c)-y Or the b in m=b f 2. Evaluate the model, is it a good model or not? Is another model better?
Fluorine and its Compounds 一、氟的电负性(electronegativity)为4.0,是电负性最大的元素。氟的化合物存在于人体 中:主要存在于牙和骨头中,在自然界中以萤石(Fluorspar):CaF2、冰晶石(cryolite): na3aif6和氟磷灰石(fluorapatite):Cas(PO4)3F的矿物存在