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

How to determine a priori sample size for t-test with unequal means?

I need to conduct a a priori sample size determinations for t-test with unequal means, but I don't know the sizes of the groups nor the ratio of both groups... Can I do a sample size determination...

24 February 2021 8,289 3 View

How to perform Cox proportional hazard analysis or Kaplan-meier survival analysis in SPSS?

At first please see the attachment. This experiment was performed for a period of 7 days (n=100). After 7 days, we found different level of survival rate (%) for each treatment. Now, I want to...

15 February 2021 9,145 2 View

Anybody expert in Augmented Reality?

i want to make research related to augmented reality for language learning in my classroom. so I need to learn to make simple AR for my class. i need expert to sharing experience about AR.

03 November 2020 9,241 5 View

How can I fix the package installation error in R version 3.6.2?

In the case of package installation, I am facing an error in R version 3.6.2 . How can I fix this problem? I have attached screenshot of R console showing error during package installation....

06 April 2020 307 3 View

Can we call or rename Artificial Intelligence (AI) Algorithm as an Alternative Intelligence Algorithm ?

Most of the AI Algorithms are based on the the living things behavior including humans, animals, and insects related with day to day activities. Some of the recently developed AI algorithms...

25 May 2019 6,300 13 View

How can I progress from proof-of-concept stage to prototype stage? Especially for the development of solid state device?

Hi All, So a little introduction, our group is making solid state devices (MRAM etc) but so far we have only work on proof of concept stage. So how can we bring it to the next stage? how can i...

27 March 2019 5,607 1 View

No correlation between cell death and annexin staining?

I dump certain steroid treatments on my cancer cell lines followed by annexin staining. However even if i am observing under the microscope that there is significant cell death as all cells have...

08 June 2018 735 8 View

If one deal with categorical variables, is it justified to apply pure inferential statistics to analyse the data sets?

If one is doing a work where variables are categorical, like perception about their home environment, having decision making authority. here first one can't be coded in binary form like 0 or 1 but...

01 December 2017 9,574 3 View

Why do i observe no correlation between Semiquantitative and Real time PCR ?

I am studying the expression pattern of few genes in tumor samples treated differently. Following cDNA making and PCR i can clearly see difference in gene expression on gel. However even though i...

31 August 2017 1,207 6 View

Why can't make aluminum nitride film successfully by use sputter?

We use reactive sputtering process to make aluminum nitride film, and want to make c-axis aluminum nitride film on a silicon substrate, but the crystal orientation cannot be seen with...

03 March 2021 7,975 3 View

What are anisotropic electrical and optical properties of a semiconductor due to?

In some materials, properties such as band gap, thermal conductivity differ along different crystallographic axes. What are the basics?

01 March 2021 1,923 3 View

How optimize the Size Exclusion Chromatography?

Hello! I'll do a size exclusion chromatography, but I only have an open column, and I'll perform the peptide extraction from yeast, using buffer lysis (sodium phosphate 50 mM/NaCl 30 mM/DNAse and...

01 March 2021 2,215 2 View

1 nm thick MgO thin-film to be deposited on Si wafer using thermal evaporation. What will be the optimum deposition conditions?

Favourable conditions of base pressure, rate of deposition. Also, by which characterisation technique to be used to verify the thickness of the deposited film.

28 February 2021 3,640 3 View

No title

25 February 2021 5,713 1 View

Is there an ideal incubation time of RGO-modified SPCE before subsequent use, i.e., electrochemical characterization or further modification?

I notice that upon washing and air-drying of my RGO/SPCE surface and characterizing again via DPV, the current response towards ferricyanide probe significantly decreases. My worry is that the...

22 February 2021 5,324 3 View

How to generate AA6061 alloy or any aluminium alloy crystal in material studio?

I need to carry out molecular dynamics simulation on Aluminium alloy. For this i need the crystal structure that which could be further replicated to form a structure.

22 February 2021 1,410 1 View

How can I measure the thickness of thin layers deposited on textured glass susbtrates?

I want to measure the thickness of aluminum oxide and titanium oxide layers deposited on textured glass substates. The layer thicknesses are typically below 100nm.

21 February 2021 5,465 4 View

What is the best etching method for Mg-Ca alloy?

I have used Picral etchant (4.2 g Picric acid, 10 mL Acetic acid, 70 mL Ethanol, 10 mL distilled water) but it didn't work. Is there any alternative?

21 February 2021 2,558 5 View

How can we determine the band gap of a composite material that is made up of a composition of direct and indirect band gap semiconductor materials?

I have a direct band gap material and an indirect band gap material. If I made a composite of both through physical mixing. Then how can I determine the band gap of such a material as the Tauc...

17 February 2021 8,104 4 View