芴基苯并噁嗪单体的合成及热性能研究

通过一般公司动态资本结构模型研究，结合我国房地产公司运行特性，对房地产公司资产负债特性进行了分析：即将公司负债分为金融性负债和经营性负债。建立了房地产公司动态资本结构模型，利用该模型进行了数据仿真分析。研究发现，当房地产公司盈利能力较强且比较稳定时，通过增加经营性负债和金融性负债均可使股权收益率得到较大的提高，且经营性负债率对其影响较大；当房地产公司盈利能力较弱且波动性较强时，通过增加经营性负债可以提高股权收益率，但提高的幅度非常小。

Synthesis and Thermal Properties of a Fluorene-containing Benzoxazine

Based on the study about the model of dynamic capital structure of the general companies and the operational features of the real estate companies in China, analysis has been done to the characteristics of asset and debt of the real estate companies. The debt is divided into financial debt and operating debt. A dynamic capital structure model is established and stimulation is done with the model. It is found that when the profitability of the real estate company is high and stable, increase of the operating debt or financial debt will obviously improve the return of equity, and the influence of operating debt to the return of equity is obvious. When the profitability of the real estate company is poor and highly fluctuant, increase of operating debt will enhance the return of equity, but the extent is very small.