Vassilis George Aschonitis

5 Questions 22 Answers 0 Followers

Questions related from Vassilis George Aschonitis

Can anyone help with redundancy analysis (RDA) and PCA?

I have to analyze the effects of gradients (environmental parameters) on the community structure and abundance of macroinvertebrates. I used Detrented Correspondence Analysis (DCA) in order to...

16 March 2014 2,632 25 View

Can anybody suggest different approaches to estimate urban metabolism?

Can somebody suggest papers dealing with different theories and approaches regarding urban metabolism?

14 December 2013 9,823 19 View

Netcdf files in arcgis, how can I convert monthly values of a period to a mean monthly?

I have download climatic data in .nc format (netcdf) and these data contain monthly values of a climatic parameter from 1948 to 2008 for the whole globe. The files are too large and I want to...

04 June 2013 707 7 View

When does increased HCO3 in the water leads to pH reduction?

If this equilibrium is correct, CO2 +H2O H2CO3 HCO3 + H CO3+2H it means that when CO2 is added then the equilibrium is shifted to the right, increasing HCO3 and H. Could this lead to pH reduction?

27 May 2013 1,765 8 View

Which objective function is better for non linear optimization algorithm in EXCEL?

I used for a non-linear optimization problem the objective function O.F.=Σ(xs-xo)^2, where xs is the simulated value and xo is the observed. The algorithm runs adequately but I would like to know...

17 May 2013 1,485 6 View