We conduct models and tests to ascertain whether there are speculative bubbles and which factors contribute to the bubbles if there exits one. In the model, we use the option value to represent the investment value of farm real estate and compare the option value, calculated from dynamic...

In this paper, HFC-161 is proposed as a substitution of HFC-134a used in small automobile air-conditioning. According to the previous work, HFC-161 has some excellent thermal physical characteristics. Theoretical cycle analysis was firstly developed to analyze the feasibility of replacing...