How to calculate that elastic constants using quantum espresso?

I am trying to get shear modulus to do so I need to get the elastic constants. Please help me to find how to do so using quantum espresso

03 April 2017 1,511 0 View

What is the most efficient method for calculating standard deviation of earning??

in the attached thesis page 83, please I need help in explaining the proceedre in calculating standard deviation to determine earning volatility

10 November 2016 9,468 0 View

What is the most efficient method for calculating signaling?

10 November 2016 1,943 0 View

A 68 year old man presented with fatigue and back pain. On routine investigations he was found to have a Na level of 132 mEq/L. What are lines of tx?

He has hypothyroidism, diabetes, and hypertension. Last summer he was admitted to the ICU for severe hyponatremia (after a 4 day period of febrile illness). Several investigations we done, no...

12 July 2016 2,767 15 View

What do the number of observations mean?

I want to know what is the meaning of number of observations as the attached table the article is Mandatory IFRS adoption and its impact on analysts' forecasts Tao Jiao , Miriam Koning , Gerard...

03 April 2016 9,654 4 View

What firm year observations mean?

I wish to understand the meaning firm year observations as in tha attached article How Would the Mandatory Adoption of IFRS Affect the Earnings Quality of U.S. Firms? Evidence from Cross-Listed...

03 April 2016 7,920 0 View

Is a Calcium level of 10.56 mg/dl in a 67 year old man who is asymptomatic except for a 1 week episode of back pain 2 months ago worrisome?

02 November 2015 4,752 6 View

How to make an electric circuit course an easy course for civil engineers?

electric circuit course deals with networking and circuit analysis

09 October 2015 8,421 6 View

What is the relation between the size and the refractive index of nanoparticle?

what is the relation between the size and the refractive index of nanoparticle. Is there an easy way to get refractive index of a nanoparticles (two for example) in a media

01 January 1970 6,004 3 View

What is the easiest way to find shear moduli using ab initio calculations?

what is the easiest way to find shear moduli using ab initio calculations?

01 January 1970 4,593 0 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

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

VIF very high, but correlation is low and coefficient is significant. Which one whould I choose?

Hello. I have a question whether if my coefficients (statistically significant) would be valid when VIFs are really high. In my model, there are independent variables(IV), moderating variables...

26 February 2021 956 13 View

Data Analysis K-S and S-W tests?

Hello, I have conducted analysis where the K-W and S-W have come out as p

25 February 2021 9,648 3 View

Statistics: include groups of respondents made by one person for analysis?

Good morning, I could not find literature about this so I am asking. I am organizing data for a questionnaire (N=100) that foresees some personal questions like level of education. For the aim...

25 February 2021 2,090 4 View

Which is the best software or programming language (user friendly) for analysing data?

I have a basic knowledge on Python, R and MATLAB in analysing data. Among those, which is the best and user friendly? Which one should I learn deeply to analyse data?N:B: I want to learn data...

20 February 2021 3,950 15 View

Is the box plot of climatic indices better illustrate from daily data or annual data?

Hello, I hope you have a good time. I work on a research project about temperature indices. Due to the high number of indices, I only work on tables and maps on an annual time scale. In other...

19 February 2021 9,742 2 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

How to find if Qualitative and Quantitative (discrete) variables have a relation?

I'm going to do a brief research about the dependance between the number of cases of Covid-19 and sex( male/female) . One of the requierements is to use inferential statistics to test the...

18 February 2021 7,092 11 View

Algorithms to filter corrective max and min from a set of data?

I've got this 5 year Direct Normal Irradiance data I downloaded from https://re.jrc.ec.europa.eu/. I ordered this by year and by every 24 hours because I need the DNI curve by max in summer, min...

17 February 2021 2,777 5 View