Evaluating the correlation between changes in design rainstorms and extreme rainstorm events under climate change facilitates flood control disaster reduction. Based on daily rainfall data of 609 stations during 1958–2017, Pearson-III curve, least square method, F-test, other methods were adopted to study response over nearly 60 years China, explore capacity engineering change. The conclusions ...

Background: Rainfall is the main source of water on earth’s surface. It infiltrates and percolates deep into soil for groundwater recharge. Rainfall patterns, amounts, durations, intensities can vary daily, monthly, annually, spatially. therefore important to accurately estimate rainfall return periods, which be employed in hydraulic design flood control measures.</n...

We propose an unconditional non-parametric approach to the simultaneous estimation of volatility and expected return. By means of a detailed analysis of the returns of the Standard & Poors 500 (S&P 500) composite stock index over the last fifty years we show how theoretical results and methodological recommendations from the statistical theory of non-parametric curve inference allow one to cons...