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?

31 December 2018 6,367 2 View

How to draw a fitline in the scatter plot made by Graphboard Template Chooser in SPSS?

We have prepared a scatter plot with two continuous variables using Graphboard Template Chooser in SPSS. We have tried to arrange the size of dots and add data labels. However, we cannot add the...

05 June 2018 3,128 3 View

How to do Poisson regression in SPSS?

I am analyzing a data set in which the outcome variable is with count data with large variance, the maximum of which is 84751821 and the minimum is 1. The predictor variables are continuous in...

02 March 2018 4,911 3 View

How to interpret and report ordinal logistic regression in STATA?

I have a dataset with an ordinal outcome variable (3 categories) and a few inary predictor variables. I have run the ologit command in STATA and in response got coefficients and p value for each...

09 October 2017 2,883 3 View

How to deal with outliers in SPSS?

I have a SPSS dataset in which I detected some significant outliers. The outliers were detected by boxplot and 5% trimmed mean. How do I deal with these outliers before doing linear regression?...

07 August 2017 4,697 7 View

Career aspiration scale among school students

04 May 2017 8,221 4 View

How can we implement competency based medical education in community medicine?

02 March 2017 5,846 4 View

What is the underlying difference between an analytical cross-sectional study and a case- control study?

Both studies start with a control group and try to find out the association between cause and effect. So where does the difference lie?

31 December 2016 9,407 3 View

What is the basic difference between a nested case control, a retrospective cohort and a case cohort study?

Your toughest technical questions will likely get answered within 48 hours on ResearchGate, the professional network for scientists.

31 December 2016 8,539 0 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...

11 December 2016 6,935 4 View

error in running a model in Abaqus

Excessive rotation of nodes in node set ErrNodeExcessRotation-Step1

17 August 2021 0 0 View

error in modelling model in Abaqus

Excessive rotation of nodes in node set ErrNodeExcessRotation-Step1

17 August 2021 0 0 View

MGL tools

20 June 2021 0 0 View

i have some problem with chtMultiRegionSimpleFoam

--> FOAM FATAL ERROR: Maximum number of iterations exceeded From function Foam::scalar Foam::species::thermo::T(Foam::scalar, Foam::scalar, Foam::scalar, Foam::scalar (Foam::species::thermo::*)(Foam::scalar, Foam::scalar) const, Foam::scalar (Foam::species::thermo::*)(Foam::scalar, Foam::scalar) const, Foam::scalar (Foam::species::thermo::*)(Foam::scalar) const) const [with Thermo = Foam::hConstThermo >; Type = Foam::sensibleEnthalpy; Foam::scalar = double; Foam::species::thermo = Foam::species::thermo >, Foam::sensibleEnthalpy>] in file /home/ubuntu/OpenFOAM/OpenFOAM-4.1/src/thermophysicalModels/specie/lnInclude/thermoI.H at line 66. FOAM aborting #0 Foam::error::printStack(Foam::Ostream&) at ??:? #1 Foam::error::abort() at ??:? #2 Foam::heRhoThermo >, Foam::sensibleEnthalpy> > > >::calculate() at ??:? #3 Foam::heRhoThermo >, Foam::sensibleEnthalpy> > > >::correct() at ??:? #4 ? at ??:? #5 __libc_start_main in "/lib/x86_64-linux-gnu/libc.so.6" #6 ? at ??:?

24 March 2021 0 0 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

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

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

Resistor definition in Piezoelectric bimorph with ANSYS workbench

Hello, good day! I am trying to simulate similar bimorph piezoelectric harvester with below commands. However, the output power doesn't change with resistor value. Please help to find the reason. ET,10,CIRCU94,0 !SET UP RESISTOR R,1,100000 !RESISTANCE VALUE TYPE,10 !SET ELEMENT TYPE E,1,2 !CREATE RESISTOR BETWEEN NODES 1 AND 2 Thanks in advance Regards,

02 March 2021 0 0 View

Arena simulation - how do i model the following model in ARENA (see description) (new to ARENA)?

Hello, I'm fairly new to ARENA and I have the following problem: I have two queues in which, in each queue, a different order type arrives (both having an arrival rate of exponential 10). Order...

02 March 2021 2,431 3 View