What is the minimum number of studies in each category required for a multiple subgroup analysis to be viable in a meta-analysis?

Cochrane Handbook mentions subgroup analyses are only warranted if there are more than 10 studies (I have 28), and if they are distributed evenly among categories of subgroup. I am wondering if...

17 February 2021 3,467 4 View

How do you interpret multiple meta-regression in STATA?

Please could someone recommend a resource that explains performing meta-regression with multiple moderators. I have read the STATA META ANALYSIS REFERENCE MANUAL, but this only gives examples of...

17 February 2021 7,376 1 View

How do you incorporate a study that used non-parametric analysis into a meta-analysis where majority of studies used parametric?

I am calculating Hedge's g for effect sizes, so I am pulling means, SDs, and Ns, from each study. However, one study did a Mann-Whitney U test, and so reports Mean Rank, Sum of Ranks, U, Z, and r...

31 January 2021 1,182 5 View

How do I calculate potency of a working standard for assay evaluation of a Tablet formulation by RP-HPLC?

I have come across a formula to calculate the amount of drug present in a tablet formulation that mentions as such Amount of drug = (Peak area of sample/Peak area of standard) * (Dilution factor...

13 December 2020 4,224 3 View

How to represent Input data as multinomial distribution of feature vectors?

Hello everyone, Is there any approach to generate a fixed no. of feature vectors from the sequential data(similar to time series data...) and also express the same sequential data in terms of the...

29 November 2020 5,508 3 View

For designing domain ontology, which methodology should be used?

Is it better to use a predefined methodology? or design own methodology according to the domain, size of ontology, number of participants, the technical level of participants, deadline of the...

14 November 2020 7,972 4 View

How to solve the HAZE problem in Low emissivity coatings ?

Dear friends, I am facing a problem with an issue of milky Haze in the coatings developed for aesthetic applications. All the layers were deposited by magnetron sputtering having thickness in...

08 November 2020 2,853 3 View

Is it feasible to store transactional data in ontologies?

It is not feasible to store transactional data in ontologies. when the size of data will grow, the number of triples in the ontology will be in million or trillion. Due to the un-structured file...

03 November 2020 8,788 3 View

Modeling of entities (endurants) is enough. Why do researchers need to model perdurants in domain ontologies?

Modeling of entities (endurants) is enough. Why do researchers need to model perdurants in domain ontologies? I guess, there is no difference between the following two way of modeling domain...

30 October 2020 5,329 3 View

Which methodology is suitable for designing domain ontology for the Waste Management Domain?

I am designing a domain ontology for the Waste Management Domain, Can anybody suggest a mature, well-documented, and widely accepted methodology for ontology designing and development? Thanks

20 October 2020 2,991 20 View

Physics: Why do we describe light by referring to its wavelength, but microwaves and radar pulses by referring to their frequency?

In physics, the description of the properties of light generally refers to its wavelength (nm), while in the range of microwaves and radio waves we refer to the frequency of a signal (e.g. kHz or...

03 March 2021 1,682 3 View

Looking for Materials with high thermal expansion coefficient and high temperature resistance?

03 March 2021 8,272 1 View

Can we classify HV and LV lines based on line length?

I have dataset which shows the length of power lines. I need to classify the lines based on the line length. Is there a rule to classify the High voltage (HV) and low voltage (LV) lines based on...

03 March 2021 4,116 4 View

How to analyze a particular region of my simulation box in GROMACS?

Hi, I am using GROMACS 5.1.4 to simulate water in contact with a surface. I am only interested to calculate some properties of water near the surface. Let's say at a distance of x nm from the...

03 March 2021 9,989 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

How to get onecolumn document from standard IEEE ACCESS LateX template?

I have prepared a manuscript in IEEE Latex template, but for some purpose, I need to prepare a word file as well (detailed format is not required). Compared to two column .tex file, one column...

02 March 2021 1,830 3 View

Waters 2707 HPLC autosampler problem?

I am using a 2707 waters HPLC device. When I try to inject a sample, it says missing plate or rack. I changed the needle and calibrated its position but I still get the same problem. I even get...

02 March 2021 1,408 1 View

Why almost every element would be metallized in sufficiently high pressure and low temperature?

(This statement is from wikipedia, BTW). What is so special about metallic bond that is limiting high-P low-T state of a matter (as long as individual atoms exist, not white dwarf of neutron star...

02 March 2021 3,309 2 View

How can the modification of garden soil cause global warming?

Hello, I am working on a soil project and I found a primary research article that tests how the modification of agricultural soil can cause global warming, using a thermal collector, however I...

02 March 2021 7,161 3 View

Shall I skip the measurement model in SmartPLS?

Hello everyone, I had run a mediation model in SmartPLS using questionnaires that were already validated among my statistical population. A professor who edited my paper -though she is not...

01 March 2021 3,052 3 View