ANCOVA controlling baseline in RCT - how to perform power analysis and sample size estimation?

Hi, I have a simple question. I am hoping to perform a power analysis/sample size estimation for an RCT. We will be controlling for baseline symptoms, and using post-treatment or change scores as...

19 February 2021 2,648 23 View

Is MAXQDA a good choice for coding qualitative research?

Hello all! I am currently a PhD candidate in the middle of the data collection phase of my dissertation research. I have begun to look ahead to data analysis. To provide some background...

29 June 2020 3,474 3 View

What are the positive and negative effects of the COVID19 on university education administration?

Universities exist to provide three main services,namely: Teaching, Research and Knowledge transfer to the industry/community. With outbreak of the pandemic which has grossly impacted economies,...

01 June 2020 481 17 View

How can I approach the topic of DMN and combine it with LegalTech?

Hello! I am currently working on a project to bring automation into the legal field. As decisions must be based on various variables and be made in accordance with legal codes, information systems...

01 April 2020 3,942 3 View

How do i obtain/request sequencing and other data from chemo-resistant breast cancer patients?

Hi all, I was wondering how to go about obtaining highthroughput seq data from databanks. We are interested in the expression of a few genes we believe might regulate acquired chemoresistance. I'm...

11 February 2019 8,919 2 View

How do you properly clean a black 96 well plate for reuse in fluorescence reading (Poly Sorp Nunc flat btm wells, 12 mm well depth)?

Fluorescence quantification by plate reader

04 March 2018 7,230 13 View

What's the best method of collecting, temporary keeping and shipping blood samples for serum preparation and whole blood DNA extraction?

16 February 2017 3,608 3 View

How can I assess reliability and validity of a qualitative research questionnaire?

I am designing a research questionnaire on the experiences of adults learning numeracy. To assess the reliability and validity of my questionnaire I woul like to see a copy of a similar instrument...

15 December 2014 1,368 7 View

What are some recommendations for bacteriophage and euk. virus precipitation?

I'd like to precipitate and enrich for viruses from human samples (BAL, stool, serum, etc.) for metagenomic sequencing. Enrichment is pretty key for some sample types in order to get sufficient...

28 May 2014 2,060 3 View

I want to analyze WHO STEPS data in SPSS. Once variables are entered in SPSS how do I connect them with the *.sys files from WHO?

I gathered data using the WHO STEPS instrument STEPS 1 & 2. The Epi Info files supplied on the WHO STEPS site for analysis appear sketchy or incomplete. There appears to be a complete set of *.sys...

04 August 2013 8,525 1 View

What are some of the research gaps in machine learning and artificial intelligence in africa?

i would to know some of the research gaps in the artificial intelligence field in most african countries.

03 March 2021 6,145 3 View

New Journal, "Integrative Psychological and Behavioral Science" -- do you not know, and have you not seen, this done before?

Question to you and THEM, the New Journal, "Integrative Psychological and Behavioral Science" -- do you not know, and have you not seen, this done before? There appears to be a core problem for...

02 March 2021 3,024 2 View

Which is a lucid standard comprehensive book to guide on psychological scale construction and its standardization?

02 March 2021 7,082 3 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 to choose ANN number of hidden layers and nodes?

Hello, Could you please share any interesting research explaining how to choose the number of hidden layers and nodes per layer in case of regression problems using ANN? Thank you, any help would...

01 March 2021 6,200 3 View

PUC19 as a transfer plasmid for lentiviral delivery?

Hello, Is it possible to use pUC19 as a transfer vector to be packed in using the second generation viral particles packaging system( pMD2.G; psPAX2 plasmids)? As far as I understand it there is...

28 February 2021 4,868 2 View

How could I take into consideration the weights of observation in a system of seemingly unrelated regressions (SUR) in rstudio?

I build a model of 4 regression equations (probit and OLS) in R studio. I need to take the weights of observations into consideration. While it is simple to do so for every regression equation,...

27 February 2021 1,233 1 View

Can Ethovision store the generated data and video recordings directly to NAS system?

The size of data generated by Ethovision is huge. Having NAS system for data storage seems to be a good option, I am wondering whether Ethovision can directly store the data to the NAS system...

27 February 2021 6,350 2 View

How to compare 2 samples recruited with different sampling methods?

If I want to compare characteristics of 2 groups of patients, one group is recruited from a random sample of the general public while another group is from a sample with a fixed gender (male to...

26 February 2021 3,526 3 View

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