How can I generate power law distributed random numbers with exponent less than unity?

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How to fix the low pressure problem in Ion Chromatography?

I am using Thermo Scientific Dionex ICS-1100. Even after purging(with N2) the tubes connected with Eluent Reservoir and Eluent Valve; Eluent Valve to Pump Heads & changing the eluent I am...

01 October 2019 8,954 2 View

Which is the best software to visualise proportional odds derived by ordinal regression?

I have an ordinal regression model and I would like to depict the proportional odds graphically. Can somebody please help me regarding the best software to do it? Can I do it with jmp?

18 February 2019 5,853 2 View

Where to use absolute and relative precision in sample size calculation?

In sample size calculations, where do we use absolute and relative precision? Is relative precision indicated where the population size is finite and known to us and vice versa?

29 January 2019 632 2 View

How much autocorrelation is acceptable for linear regression?

In a study, we are planning to do a linear regression analysis. All the assumptions of regression (Linear relationship, homoscedasticity, no multicollinearity) were fulfilled. However, the...

23 December 2016 2,702 11 View

Suicidal intent among suicide survivors (attempters)?

We are planning to study the suicidal intent among suicide survivors in a tertiary care hospital. We are planning to use Beck's suicide intent scale. My question is, are there any other scales...

22 December 2016 6,223 3 View

How do we check homoscedasticity in linear regression using SPSS?

Read 6 answers by scientists to the question asked by Sharmistha Bhattacherjee on Nov 6, 2016

05 November 2016 1,186 4 View

Why do we have strong spin orbit coupling only the surface electrons of topological insulator not for the bulk electrons?

is it possible to have strong spin orbit coupled electronic motion in 3D??

25 October 2016 3,756 4 View

What is the best convergence limit for natural convection?

In a natural 3D convection problem, if u,v, and w are not converging though energy, is (t) term converging? Can any one please suggest the limit of convergence?

27 March 2014 9,409 3 View

Is it necessary to incorporate all results in PhD thesis?

As to improve the probability of acceptance of a paper in journal, many results need to be shown. At the same time to avoid the similarity between consecutive papers for different condition...

28 February 2014 5,033 11 View

"Mixed convection flow over extended surface", what are the significance of the work to practical applications?

Are there any other contributions that this work brings to the engineering community?

20 October 2013 6,925 3 View

Can we classify HV and LV lines based on line length?

I have dataset which shows the length of power lines. I need to classify the lines based on the line length. Is there a rule to classify the High voltage (HV) and low voltage (LV) lines based on...

03 March 2021 4,116 4 View

Irradiation data for JAPAN?

Hi, Could you help me to get the latest (2019, 2020) solar resource data for a particular site in JAPAN? PV GIS and NSRDB data are not in reach to JAPAN, I'm looking for some other database for...

03 March 2021 961 3 View

Logistical regression using SPSS for a dichotomous dependent variable, with an independent variable of 1, 2, 5 and 10 seconds?

I have an experiment with 28 participants The independent variable is the times 1, 2, 5, and 10 used as the cross hairs during a task These 4 times were tested using 4 different blocks, each...

03 March 2021 9,692 2 View

Is there a powerful system for the security of the systems distributed on IoT systems?

02 March 2021 3,858 10 View

How could I process data in RCT to include it in meta-analysis?

I'm in the process of doing a meta-analysis and have encountered some problems with the RCT data. One of my outcom is muscle strength. In one study, I have three different measurements of muscle...

25 February 2021 7,603 3 View

How does an AC-DC power supply Flyback Converter Based USB Charger Model using Matlab/Simulink looks like?

I am required to learn about Flyback converters and I got stuck not knowing to full design of the power supply flyback converter Based USB Charger Model using Simulink, especially the design model...

25 February 2021 5,435 2 View

Sample size determination for non-parametric tests?

How do I run a a priori sample size determination for non-parametric tests, like the Mann-Whitney U-test and the Kruskall-Wallis or other non-parametric tests that accord with the unpaired t-test...

24 February 2021 166 6 View

Is it mandatory to specify Subjects Combinations in Generalized Linear Mixed Models (SPSS)?

Hi all, I have data with two levels: lets think of the classic example of students and schools. When running the analysis in SPSS and selecting the Random Effects, we can select (we can or we...

24 February 2021 7,379 4 View

How to constrain genetic algorithm input u?

My real system (buck converter) can only take an input of 0 to 1 (duty ratio) and I need to constrain the system so the controller action keeps within this bounds. How can I do this? The code for...

22 February 2021 2,125 3 View

ANCOVA controlling baseline in RCT - how to perform power analysis and sample size estimation?

Hi, I have a simple question. I am hoping to perform a power analysis/sample size estimation for an RCT. We will be controlling for baseline symptoms, and using post-treatment or change scores as...

19 February 2021 2,648 23 View