How to determine the population and sample size?

15 February 2021 9,340 4 View

Hello, I need help to separate the mucilage found in an aqueous extract ?

During the process of aqueous extraction of phenolic compounds, I got a mucilage that must be separated from the extract that I would like to study. Thank you for your help.

03 January 2021 1,765 3 View

Can language alter our perception of crime?

I am looking for any resources which may be useful in a study I am conducting on the impacts that language may have on our perception of crimes. I will be using headlines which convey a particular...

23 December 2020 8,713 6 View

University's role in the socio-economic development of the country?

Does the university have an effective role in the socio-economic development of the country? It's much more academic than open to job creation for young graduates. What do you think? Safia Taleb

23 September 2020 8,637 13 View

A question about Conquest or WebCSD search in-house databases?

Dear all I want to ask help in searching about all crystal structures that contain : Zn/W/P or Zn/W/Si Can anybody help me in case of having access to conquest or WebCSD and his/her help will be...

25 August 2020 1,883 3 View

What are the light quality,quantity and intensity requirements for growing mango under greenhouse or poly houses ?

What are the light quality,quantity and intensity requirements for growing mango under greenhouse or poly houses ?

17 August 2020 2,823 1 View

Find location (x,y) where expression is satisfied in COMSOL ?

for 1-D axisymmetric model. I need to find the coordinate r where the variable x is equal to x0 for all times? find(r, x==x0) .... What a COMSOL operator should I use for that?

02 July 2020 5,098 8 View

A question about Mendely bibliography ?

Dear all, My question is how to do the attached citation bibliography using Mendeley? i.e. merging many references in one number and letter of each.

28 June 2020 5,084 2 View

Could you collaborate, please?

Hello everyone! I've developed a 35-item questionnaire to measure ESP students' critical reading strategies awareness while reading materials in English (as part of my Ph.D. research). Now, I need...

27 June 2020 2,484 3 View

Can pilot study done under the same sampling frame of parent research?

12 April 2020 5,110 3 View

What is the best way to keep an anaerobic chamber anoxic in the absence of hydrogen?

I'm a graduate student who works with an anaerobe, so I often work in an anaerobic chamber. I've been working on an assay that involves the steady-state of the quinone/ quinol pool. Anoxic...

03 March 2021 2,971 1 View

Good sites to recruit survey participants on a grad school student budget?

Any good recommendations for participant recruitment for online surveys on a grad school student budget?

02 March 2021 4,293 4 View

Is it possible to remove a preprint posted by a journal which is already rejected?

As we know many journals are posting preprints (DOI) in advance before the peer-review process. However, there is no guarantee that the preprints get published. The journal's reviewers undergo the...

01 March 2021 5,778 2 View

Is there a recitation score bank system for fair evaluation and assessment of student recitation?

In actual and virtual class, even if there is rubric for recitation, students may still fail to receive fair grades or scores. Others are active in recitation and others are not or others may fail...

26 February 2021 8,387 3 View

Do you think there is cognitive oversaturation in the current pandemic? What impact can this have? And other manifestations?

Dear colleagues, Do you think there is cognitive oversaturation in the current pandemic? What impact can this have? And other manifestations? The question is mainly aimed at adolescents (pupils,...

23 February 2021 7,796 4 View

Must a control group to be in the same semester that a experimental group for a study in education?

Hi everyone, I'm researching about mobile learning in higher education. Due to the small number of the students in the semesters, I cannot have a experimental and control group together. I'm...

22 February 2021 3,653 11 View

Latent profile analysis based on two variables/sources of data?

Hello, for my master project, I would like to conduct a latent profile analysis about self-regulated learning skills. I would like to take two different measures into account when creating the...

21 February 2021 2,326 3 View

Where can I find raw quantitative datasets on ecosystem services?

I'm an Undergraduate student on the search for a research topic which has to involve any ecosystem service(s) and a response to environmental change. I'm looking for raw quantitative data sets (I...

19 February 2021 5,911 2 View

Person-Codes for questionnaires in longitudinal studies: Is there an easy solution for better matching-rates?

Hi, I have a problem regarding matching of longitudinal data in my field of research (university students). We have a Person-Code for matching data measured in different time points, but 30%+ of...

17 February 2021 3,075 4 View

Level 1 pre-post multilevel regression: Panel data or ANOVA approach?

Dear colleagues, I am currently teaching myself in multilevel analysis using educational data. I found few to zero literature on basic analysis methods. In my context we frequently use level-1...

17 February 2021 9,378 5 View