Are there any difference between : R and DEM (pysical model )?

R and DEM (pysical model )?

01 February 2019 7,406 3 View

how can we integrate an electronic, or mathematical technique in another purely hydrological field?

please, Consulte this link: https://www.researchgate.net/publication/267326130_Multi-site_modeling_and_prediction_of_annual_and_monthly_precipitation_in_the_watershed_of_Cheliff_Algeria Thank you

02 March 2018 7,707 2 View

What is th Relationship between Kalman filter and polynomial regression?

I Know that Kalman filtering does time series prediction, so, can we say that there is a relationship between Kalman filter and polynomial regression?or is it entirely different? Thank you

02 March 2018 564 2 View

I can't find the tools PESTCHEK.EXE and INSCHEK.EXE in the PEST distribution files to run the model in Visual MODFLOW ?

01 February 2018 2,050 5 View

What is the most successful model among these three: SWAT, GSSHA, HSPF, why?

What is the most successful model among these three: SWAT, GSSHA, HSPF, why? to predict sediment concentration

01 February 2018 3,091 5 View

How can we inclusing of model error in hydrological , particularly for if a nonlinear, and more chaotic model was implemented ?

With application of kalman filter , How can we inclusing of model error Q ?

01 February 2018 1,632 2 View

What is the relationschip between Quasi-newton's method and conjugate gradient methods ?

thank you to guide me or send me titles of books to consult them the best

01 February 2018 673 2 View

How can we study spatial hydrodynamic variation from Markov chains method's?

Modeling, Markov chains

01 February 2018 7,936 4 View

What is the relationship between the probability of transition and modeling to the order of Markov chains?

probability of transition ,modeling, Markov chains

01 February 2018 6,700 5 View

When can we use Matlab N.Network (M.N.N)?

what is its usefulness?

01 February 2018 1,863 3 View

How to compare two groups with only two measurements?

Hiiiii everyone! I have an enquiry on statistical analysis. I was looking for many forum and it's still cannot solve my problem. I want to compare means of two groups of data but only with two...

03 March 2021 8,796 3 View

Binary Logistic Generalized Linear Mixed model in SPSS. Is it doable?

I want to analyses the proportion of swimming sperm of three species of fish in two salinities. To analyse the proportion of swimming sperm in a Generalized Linear Model, I would use a Binary...

03 March 2021 2,297 3 View

What's the best way to measure growth rates in House sparrow chicks from day 2 to day 10?

What's the best way to measure growth rates in House sparrow chicks from day 2 to day 10? Since, the growth curve from day 2 to 10 won't be like the "Logistic curve" it might not follow logistic...

03 March 2021 1,401 3 View

After a reference from Int J Body Compos Res, can any body help?

Hi, I am after the reference below, my library says it cannot obtain a copy either locally or internationally, any help appreciated! Chris Wang ZM, Heshka S, Wielopolski L, Pi-Sunyer FX, Pierson...

03 March 2021 6,193 1 View

How to increase a model accuracy ?

dear community, my model is based feature extraction from non stationary signals using discrete Wavelet Transform and then using statistical features then machine learning classifiers in order to...

03 March 2021 6,994 5 View

1. What is the impact of having different scales in a survey? and how can we solve this problem before and after data collection (Literature)?

1. What is the impact of having different scales in a survey? and how can we solve this problem before and after data collection (Literature-based reflection)? Thank you for your time and for...

03 March 2021 2,870 3 View

What techniques can I use to determine the miscibility of polymer blends?

The term miscibility refers to the single-phase state in thermodynamics. I do not mean the compatibility of different components. To determine the miscibility I know several techniques such as...

03 March 2021 4,107 4 View

What degree of missing data in a particular case/participant results in Expectation-Maximisation no longer working?

I'm dealing with a mediation model and am using the PROCESS module in SPSS. Due to SPSS and PROCESS being limited in the imputation methods - being unable to handle multiple imputation - the other...

02 March 2021 4,362 1 View

How to repeat an operation on an atom selection for multiple times in PyMol?

Hi, I am trying to construct a multi-layer fibril structure from a single layer in PyMol by translating the layer along the fibril axis. For now, I am able to use the Translate command in PyMol...

02 March 2021 4,569 4 View

What analysis to choose with a large neste dataset and clearly skewed or kurtotic distributions?

Hello! I have a dataset of n=3000 nested within 8 countries with approximately 200 or 400 responses in each country. I originally planned to perform multilevel modelling with 4 dependent variables...

02 March 2021 6,865 1 View