How can I calculate parameters of pseudo-second model for adsorption processes?

07 December 2020 3,541 9 View

How to implement the GLCM (gray levels co-occurrence matrix) matrix to determine parameters such as entropy, kurtosis, and others,using python+OpenCv?

How to implement the GLCM (gray levels co-occurrence matrix) matrix to determine parameters such as entropy,kurtosis, among others of an image, using OpenCV and scikit-image libraries?

26 July 2018 5,722 1 View

Has anybody built a survey questionnaire with already validated constructs from other surveys?

HI, do you have experience with using already validated questions (for various constructs, e.g. construct to assess risk behavior, construct to assess school performance) in your own survey...

05 November 2017 6,342 3 View

Can I use mixed methods if i have only quantitative data?

28 September 2017 6,553 6 View

Do you know any module to run a test to compare two matrices (same size) from different populations? I know some tests, but...

I am not an expert in multivariate analysis, son I need your help. I have many covariance matrices related to the items of a score. I have information from many populations. I estimated the...

09 August 2017 9,074 2 View

Do you know any module to run a test to compare two matrices (same size) from different populations? I know some tests, but...

I am not an expert in multivariate analysis, son I need your help. I have many covariance matrices related to the items of a score. I have information from many populations. I estimated the...

07 August 2017 5,126 2 View

What is the theoretical maximum for the energy efficiency in cathodoluminescence?

Reportedly, zinc sufide (ZnS) doped with Ag or Al or Cu is the most energy-efficient scintillator: one estimate says it's 30 %, that is, for an optimized composition (doping, crystal size, etc.) a...

28 December 2015 2,829 3 View

Can anyone assist me with the sample size calculation for school based survey in a stratified two-stage cluster sample design?

It is a cross-sectional study to find out associations between specific factors and smoking behavior. Target population: 13 to 15 years old adolescents in school settings; the population size...

11 December 2015 5,229 2 View

Do you have any knowledge with (Poisson-Logit Hurdle Regression) in Stata?

09 July 2014 3,637 2 View

Do you have any knowledge with (Poisson-Logit Hurdle Regression) in Stata?

06 July 2014 6,468 2 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

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

Is There Any Feasible Method To Test Fluorescent Compounds Other Than Fluorescence Spectrometers ??

Is There Any Feasible Method To Test The Efficiency Of Fluorescent Compounds Other Than UV Spectrometers ? Suggestions Would Be Appreciated !

02 March 2021 5,785 3 View

How can I make stacked bar graph with scatter plot?

I want to make a stacked bar graph with showing each data value as dots. I tried with graph pad prism, version 6, but could not succeed. Does anyone have tried before making such graphs?

01 March 2021 9,383 1 View

Mixed ANOVA - help?

I'm currently working on a piece which asks to conduct an ANOVA - looking at the effect of sporting group (2 levels), and exercise trials (two trials with six levels). I've computed this all...

27 February 2021 9,626 4 View

What could be reason for getting such type of graph for complex impedance in case of polymer blend films?

Its effect appears in real part of ac conductivity also. Can anyone suggest any reason behind it?

26 February 2021 3,487 3 View

How to Interpret Partial Eta Squared Numbers For a Repeated Measures Anova?

I have obtained Partial Eta Squared Numbers through Two-Way Mixed Anova Analysis. My results for different constructs are: .105, .135, .038, .068, .061 respectively. I wanted to know, whether...

24 February 2021 7,122 1 View

Can I use a graph from a another source in a thesis?

I have a permission from X company to use their graph from a report, but they have a reference in the bottom left corner of the graph as follows: "Source: Database Y". Is it OK to use this graph...

24 February 2021 2,269 3 View

I have need of XRD graph analysis software for phase identification. Can you please provide links for software tools which can be downloaded?

i am trying to download x'pert high score software, but can't download it. please do suggest software for phase analysis

24 February 2021 5,687 4 View

Could you please suggest to me research in which a relation between the shear wave velocity and the degree of saturation for stone was discussed?

Hi all, I am looking for a graph or a relation that relates the degree of saturation and the shear wave velocity for the marlstone. Looking forward to your suggestions Best Regards

24 February 2021 9,690 1 View