New type professional farmers are farmers who possess certain resources and capitals, have certain extent of spirit of entrepreneurship, and are fully capable of obtaining and allocating resources related to agricultural production and management, and engaged in agricultural production and...

This paper presents some limit theorems for realized power variation of processes of the form observed at high frequency. Here BH is a fractional Brownian motion with Hurst parameter H[set membership, variant](0,1),[phi] is a process with finite q-variation for q1/(1-H), [xi] is a purely...

Based on a survey of 939 farmers in Sichuan and Chongqing, this paper analyzes the influencing factors of entrepreneurial farmers’ formal financial credit demands and credit constraints with Probit model. It is found that entrepreneurial farmers have strong demand for formal financial...

Accurate prediction of high-dimensional covariance matrices is crucial for portfolio and risk management. In the model developed in this work, high-frequency financial data is used to obtain the realized covariance matrix, and the realized semicovariance is used to decompose the covariance...

We establish a feasible central limit theorem with convergence rate $n^{1/8}$ for the estimation of the {integrated volatility of volatility} (VoV) based on noisy high-frequency data with jumps. This is the first inference theory ever built for VoV estimation under such a general setup. The...