Is there a mathematical proof showing how random assigment guarantees the same probability for the individual to be selected?

Considere a completely randomized design, where every unit is randomly assigned to a treatment group. Let's say we have 30 observations and 3 treatment groups. When we choose one observation at...

09 October 2018 5,011 17 View

No title

03 April 2018 3,123 2 View

Is anyone familiarized with the use of the "Delta method" in the calculation of the SE's of the long run coefficient after estimating an ARDL model?

After estimating an ARDL model in eviews, you can ask for the long run coefficients by clicking view > coefficients diagnostic > long run form and bound test. My question is: how standard...

01 February 2018 9,644 2 View

Why eigenvectors seem incorrect in python?

01 February 2018 5,615 4 View

Should we considere Structural Breaks when testing for granger non causality following Toda - Yamamoto procedure?

Dear Sir or Madam: Should we considere Structural Breaks when testing for granger non causality following Toda - Yamamoto procedure? I mean should i considere breaks in the slope or intercept or...

07 August 2017 1,308 0 View

Should I considere structural breaks in an ARDL model?

Dear Sir or Madam, Is it correct to considerer structural break in the data by adding a Dummy2000 (which adquire values of 1 since the year 2000) and an interaction term, Dummy2000*X1. Y =...

31 December 2016 10,021 7 View

What would you suggest when structural break is present?

Dear Sir or Madam, Your opinion will be highly appreciated! I'm using annual series from 1965 to 2015. Chow test suggest that there is one break date (1980) in my dependent variable (Y). Should I...

11 December 2016 9,423 1 View

Should I fix Multicollinearity or should I leave it?

I would like to read your opinions about the next issue: the model (ARDL) is CO2 emissions (lco2pc) as a function of oil prices (lop) and GDP per capita (lgdppc). All variables in log form.Oil...

11 December 2016 7,545 10 View

Would you prefer Traditinal Granger causality or Toda yamamoto procedure to test for granger causality?

My model is Y(X1,X2), where Y=CO2 emissions, X1 = gdp per capita, X2 = oil prices. When i tested using traditional Granger causality, X1 and X2 do granger cause Y. When i tested for granger...

11 December 2016 1,726 2 View

Is my model still stable?

Dear sir or madam: I was wondering if these results show that my ardl model is stable. I mean if we see the cusum square graph the blue is outside the band and then comeback within the...

10 November 2016 2,571 6 View

What is your perception on using visual analysis or quantitative approaches to evaluate data from single-case research designs (n of 1 trials)?

Results of single-case research designs (i.e., n-of-1 trials) are often evaluated by visually inspecting the time-series graph and computing quantitative indices. A question our research team is...

03 March 2021 687 1 View

Timeout error!! Processor in the loop (PIL) using STM32F4 Matlab 2018a?

Dear Researchers I am trying to perform a PIL simulation using STM32F4 Discovery board and comunication serial USB TO TTL. During simulation I receive the following timeout error: An error...

01 March 2021 2,327 1 View

How to address this issue in the analysis of Real-Time PCR results?

To dear Researchers, I was analyzing a series of concentration for estimation of Real-Time PCR efficiency. The concentration was 1:10. I used MS-excel to evaluate Slope. The result of slope was -8...

01 March 2021 8,683 4 View

Can anyone provide the Support vector regression code structure of LIBSVM MATLAB or python ?

Please, if Gaussian Parameter optimization is possible in this code structure

28 February 2021 278 3 View

How relevant is Mini slump cone?

for all the rheology researchers, my question is, how relevant is a mini slump cone (smaller than a standard 50 cent rheometer). currently based on testing, the thickness of slumped material is...

26 February 2021 3,668 1 View

How to plot the probability paper of Gumbel distribution using R programing?

In R-studio, there are many commands of Gumbel package. Arguments are also different. I`m asking about the alpha parameter of the Copula which must be greater than 1. If this is the one used to...

25 February 2021 5,229 3 View

No title

I am trying to find how to know the density needed for a pva electrospinning in a 0.6mm neddle, the electrospinning will be from top to bottom and the problem I really have is the solution because...

25 February 2021 2,615 3 View

Does anyone have a sequence for the human CD34 promoter?

I'm looking for the human CD34 promoter sequence to engineer into a vector construct. Can anyone recommend a good source for this sequence? Thanks very much, Laura

25 February 2021 8,205 1 View

How to make a time series imputation benchmark ?

Hello ! In a work, I have to benchmark different algorithms to fill in missing values in time series. I insist on the fact that this is imputation and not forecasting. In my case, I have access...

24 February 2021 7,470 7 View

How to interpolate from a time-series database ?

Hi, I am having trouble with a problem, in the field of Optimal Control and the generation of optimal time-series. Let's consider a system, whose dynamics are represented by dx/dt =...

24 February 2021 9,105 2 View