Hi all, My research questionnaire has 3 sections each having a mix of yes/no and multiple choice questions. How can I test its reliability ?

The sections are about awareness, practice, and perception regarding waste management. Thanks

20 February 2021 5,722 3 View

Do we need to take IRB approval for quantitative research paper?

Is IRB Approval necessary for writing a research paper on marketing based on quantitative research?

11 October 2020 3,618 5 View

What are some good resources on evaluating a survey for bias and validity?

I am looking for some suggestive reading on evaluating for bias in survey responses.

20 September 2020 7,605 3 View

When training a deep learning model should the validation loss be greater than or smaller than the training loss?

While training a deep learning model I generally consider the training loss, validation loss and the accuracy as a measure to check overfitting and under fitting. And different researchers have...

22 July 2020 4,106 12 View

How do I compute a coherency and semblance attribute (3D volume) from 3D seismic data?

I want to write a code to generate coherency volume to detect faults in the data . For that I want literatures to find algorithm and concepts or any type of help in this regard.Thank you .

26 March 2020 3,692 6 View

In a 4 point Likert scale on frequency what value should be assigned to the response " Never" , 0 or 1?

In my questionnaire: I have asked, " How frequently a certain topic is taught?" A 4 point Likert scale was developed for the response where following values were assigned to each response: Never:...

16 June 2019 8,443 4 View

Does inter coder reliability for deductive content analysis also supports investigator triangulation for validating the coding process?

Inter coder reliability depends on two separate coders , coding the same data on the basis of certain coding rules. During this process there is reassessment of coding matrix on the basis of...

17 May 2019 322 3 View

For the deductive content analysis can we have the researcher as the coder?

In my study for inter coder reliability , the coders selected for coding data are : CODER 1 : the researcher , herself , that is me CODER 2: a different person from the same educational and...

11 April 2019 8,252 3 View

Please suggest me how to write instructions for coding in case of deductive content analysis?

Please if someone could share , sample of coding instructions to coder for conducting deductive content analysis of the document. ( samples of codebook, coding form for deductive content...

08 April 2019 5,981 3 View

In qualitative content analysis how can we define category, sub-category and code?

Instead of using theme, category , code hierarchy , is it meaningful to use category, sub category and code hierarchy?

31 March 2019 2,962 8 View

Does the pressure(-600 mmHg) affects pH?

When I conducted the degassing experiment using decompression under anaerobic condition(and I used ferrous based chelating agent), the oxidized ferric were observerd. So, could you tell me the...

03 March 2021 4,892 5 View

Which database would give me this list of chemical components?

Dear colleagues: I would like to know if anyone knows of a database that gives me the parameters pH, K, K, Mg, P, C, N, Zn, Cu, Ni and Cd of common foods. I find a lot of information of proteins,...

26 February 2021 5,525 3 View

Why is NH4OH added in heavy metals limit test?

The limit test I'm referring to is USP method II. In this procedure you need to dropwise add 6N of NH4OH to the sample until it the pH is alkali. After that you need to dilute and add HOAc until...

23 February 2021 2,049 3 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

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22 February 2021 9,932 11 View

Can anyone help or comment on solubilising chlorobutanol in aqueous injections in minimum time possible?

Please suggest solubilisation of chlorobutanol in injections. Tried pH and high temperature. But the issue is of assay drop. If anyone can suggest any solution. Its a commonly used excipient for...

21 February 2021 7,397 1 View

What reaction will occur when adding hexamine into ammonium nitrate in an acidic medium?

Hello, I am investigating properties of water in oil emulsion explosives. And adding hexamine (hexamethylenetetramine) into one of the phases that are used to make the emulsion should increase the...

21 February 2021 8,680 1 View

What properties of water shall be analyzed and evaluated to test the effectiveness of activated carbon?

I would like to ask what other properties of water (pH and such) shall be analyzed and evaluated to test the effectiveness of activated carbon from filtering the contaminants present in the water?

20 February 2021 9,422 8 View

Phenol-pH graphic?

We want to use phenol pH graphic to measure the pH of mediums before and after inhibitor application to cells. We have phenol absorbence values at 460, 560 and 720 nm wavelength. When we measure...

20 February 2021 7,700 3 View

How to measure the pH of Peat Soil?

Peat possess organic content above 75% and is highly acidic in nature (i.e. pH < 4). Before commencing stabilization, it is mandatory to know about the pH level of peat. Therefore, your...

18 February 2021 9,424 7 View