Yang Pan

8 Questions 3 Answers 0 Followers

Questions related from Yang Pan

How to randomly seperate a region into subregions with different area?

Dear all, I have a watershed and wish to randomly split the watershed into different 'artificial' farms, and the farm area should follow an exponential distribution as found empirically from...

21 January 2020 4,021 3 View

How to estimate the Fourier power spectrum for series with variable time steps?

Usually, in literature, what I saw is the method to estimate Fourier power spectrum using data with fixed time step (e.g., 5 mins). Right now the time step of the data I have in hand is a mix of 4...

02 April 2016 8,917 4 View

How to downscale radar rainfall with variable time steps using multifractal cascades model?

I want to use the multifractal cascades model to do a 3D downscaling of the radar rainfall products into finer spatial and temporal resolutions. However, the radar data I am using (NEXRAD in the...

22 March 2016 763 1 View

Is there any already calibrated high resolution urban hydrologic model for a small urban watershed?

I want to do some research on the impact of rainfall observation on urban storm water management. To do this a urban hydrological model with high spatial and temporal resolution is required....

08 August 2015 442 3 View

Why does the objective function of fuzzy c-means algorithm become NaN in Matlab?

I am using the Matlab Fuzzy Inference toolbox to build an adaptive neuro-fuzzy inference system. I first use genfis3 to generate a FIS system and do the clustering, then use anfis to further...

04 November 2014 4,345 6 View

How can I compare two time series forecasting models considering their uncertainty?

When comparing two time series forecasting models, there are many statistics, e.g., R2, RMSE, Nash efficiency, etc. However, they are all for deterministic models, when considering the uncertainty...

29 September 2014 5,249 6 View

How can I make a forecast of series with certain probability distribution functions?

For example, if I have a probability distribution function (say a gamma function) of a series (say a daily streamflow series), and maybe I have a few other related data (say daily series of...

13 April 2014 2,059 1 View

Will ecosystems be affected when the pollution load is under its self-purification capacity?

We all know that when the pollution load is very big, both the structure (i.e. invertebrate abundance and structure in freshwater ecosystem) and process (i.e. rate of leaf litter breakdown or...

01 October 2013 8,209 3 View