On the Influence Factors of Second-hand House Prices in First-tier Cities——Empirical Analysis Based on Panel Data

With the arrival of the ＂housing stock＂ in first - tier cities, the second - handhousing^market will become the dominant property market. This ardcle aim to the first - tiercities of second - hand housing prices and new home price index for the empirical analysis, thedata related to the cointegration analysis found that the result of the first -tier cities real estatemarket in China, the new home price index is the significant factors influencing the second -hand house price indexi For Beijing, Shanghai second - hand housing and new home price in-dex time series johans test, found that there exists cointegration relationship between two varia-bles,the new city real estate market prices out of a line on the secondary market have clearguide. Therefore, the real estate market regulation aiming at the first -tier cities and the＂housing stock＂ should take the second - hand housing market as the main direction, startingwith the sale price and influencing factors of new houses. At the same time, in different cities,we should adhere to the city＇ s policies, reflect the policy differentiation, promote the reformof the real estate supply side, and promote the return of housing properties.

数学真理困境的自然主义实在论求解

把数学对象看成是独立于人脑而存在的客观抽象物,同时要求为人们如何能够认识到这些对象提供直接的经验证据,这是贝纳塞拉夫数学真理困境对数学实在论提出的认识论难题。玛戴试图用折衷的柏拉图主义与一种双重认识论相结合的策略为这一难题提出了自然主义实在论的解答。然而,双重认识论必然导致两种本体论图景,其结果只能是玛戴一方面无法维护其所坚持的数学抽象本性,而另一方面又无法为人们认识数学对象的感知能力提供合理说明。