Can random sampling have inclusion criteria?

As random sampling means that everyone in the population have an equal chance to be chosen, can it have inclusion criteria? My research participants have been chosen based on the inclusion...

26 February 2021 6,905 10 View

Which ethical metrics is expected from an academic who is the owner or the creator of the measuring instrument?

Which ethical metrics is expected from an academic who is the owner or the creator of the instrument? The measurement tool will be applied to adults as an online form and a snowball sample will...

01 February 2021 9,188 3 View

Hi my name is syahida. may i know the accurate concentration of lpg gas?? is it 250 ppm consider as dangerous gas in household?

hi my name is syahida. may i know the accurate concentration of lpg gas?? is it 250 ppm consider as dangerous gas in household? can you guide me to do the project of lpg gas detector system...

23 January 2021 9,425 4 View

What the reliability method of filling missing time series data?

Hi Researchers, How to measure the reliability of the method for filling missing time series streamflow data such as ARIMA model and interpolation?

12 January 2021 2,725 7 View

How to standardize and set parameters in the Puller sutter P-97 to get accepted pipette shape and resistance for whole cell recordings on DRG?

We are working on a P-97 puller and we are using it to do whole cell recording in DRG. We have 2 types of pipettes (borosilicate glass ID: 1.1 OD: 1.5 and ID: 0.86 OD: 1.5 ) as it showed in the...

04 January 2021 2,112 6 View

How do I write in a more professional scientific way?

I am an undergraduate in university. I am new to scientific research and would like to know how to make my paper more professional. Thanks in advance.

04 January 2021 264 12 View

What is the difference between Introduction, Background, Literature Review and Conclusion for writing a Thesis Report?

I've recently started writing a thesis report based on my research paper. And I'm very confused about writing the chapter of the literature review because we already discusse everything in the...

03 January 2021 6,028 8 View

In the case of SEM (scanning electron microscopy) of Fasciola gigantica, some white spots/substances were found but what are the causes for these?

In the case of SEM (scanning electron microscopy) of Fasciola gigantica, some white spots/substances were found but what are the causes for these?

03 January 2021 8,525 3 View

Does "response to item ratio" has any effect on "inter-item correlation"?

Suppose a survey was conducted with a lower sample size (less than 100) for factor analysis of the items (less than 20). Now would a larger sample size increase the inter-item correlation? What...

27 December 2020 1,722 3 View

What is the most perfect way to convert Latex to Word?

I am looking forward to finding the best way to transfer Latex files to word format. I found some technical ways but they do not work perfectly for some sections such as tables and formulas....

06 December 2020 6,530 5 View

How to define and get results (stresses) for certain points of a model in abaqus, using python? When the size of the model changes?

I want to do a parameter study of a aixsymmetric cylinder in Abaqus. I want to create several jobs where I get the stresses for 3 different points in my model. These points are defined. I wrote a...

01 March 2021 10,078 1 View

LOAD DISPLACEMENT CURVES Stiffness increasing in ANSYS non linear analysis. HOW CAN I CORRECT IT?

Hi. I am doing non linear FE analysis using a new material beam under flexural 2 point loading using ANSYS. I have defined a bilinear material model. The solution has converged. In results I am...

01 March 2021 9,911 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

Stress/strain tensors decomposition ???

25 February 2021 6,760 1 View

How to reduce residual stresses in MD simulation?

I am working on a preparation of representative polymeric structures of some popular polymers, such as polyimide or PTFE for MD simulation, during which a single nitrogen or oxygen atom will be...

24 February 2021 8,105 3 View

Suggestions for occupational stress surveys?

I am currently writing a masters thesis on reasons for occupational stress in the early childhood classroom, and want to include a short survey assessing participants work-related stress levels. I...

24 February 2021 8,678 2 View

How can I obtain time series data by country on night-time light (brightness) ?

Hi everyone, Please, how can I obtain time series data by country on night-time light (brightness) ? I've tried, but so far all I can find are maps. I am looking for numerical data, especially in...

24 February 2021 8,625 4 View

The most suitable method to calculate the stress intensity factor in the presence of contact between the crack lips?

I'm trying to study cracked structures under a compressive load taking into account contact between the crack lips. I would like to know if the method of extrapolation by displacement remains...

21 February 2021 8,694 4 View

How do I collect online measures in a same-different task?

The same-different task requires to subjects to indicate whether a pair of stimuli seen or heard are the same (say AA or BB) or different (say AB or BA). Researchers often collect offline measures...

20 February 2021 9,226 2 View

How to assign two different material/section properties in Abaqus(UMAT)?

Hi everyone, I am conducting a non-linear multi-layer pavement structure analysis which is a stress-dependent. So far, I am able to define the nonlinearity for one soil layer for its resilient...

11 February 2021 9,607 3 View