What is the most suitable program for determine the state of synergesm, antagonism or addition of mixing two or more toxicants?

In a toxicology experiment the mixing pattern of two or more toxicants required for the physiological or lethal effect. what is the suitable program or equation that I can use?

06 January 2021 7,419 3 View

What are the conditions on projection operators in order to have optimal L^2 numerical estimates?

Mixed finite element methods employ numerical spaces that are, most of the time, something different than the full P^k spaces (polynomials with order up to k). For example, the BDM_k spaces for...

04 January 2021 2,009 2 View

What is the best way to use R to analyze keywords in articles ?

I would like to analyze the presence of certain keywords in several publications in order to appreciate how certain articles contribute to the achievement of the SDGs (The Sustainable Development...

16 October 2020 7,390 3 View

How can i measure traces of Hg2+ spectrophotometrecally, ?

I want to measure a low concentration of Hg2+ in a solution spectrophotometrically, ia there an indicator or something i can use as an indicator for Hg2+ to color it and make it easy to measure

14 September 2020 3,575 3 View

Jornal indexd with SCCI?

what is the best jornal indexed in SSCI and is free to punblish my ariticl about CSR?

19 July 2020 4,895 3 View

Expanding mouse T cells in serum-free medium?

Dear All, I would like to expand T cells in serum-free medium then inject without wash in mice? Is there is a special medium for that purpose? Thank you. Best, Hossam.

12 June 2020 6,112 4 View

How do I choose an appropriate statistical test in SPSS?

03 May 2020 1,018 3 View

How is triangulation used in qualitative data to validate results?

I just want to know your perception regarding the use of triangulation in qualitative research.

20 April 2020 4,441 8 View

How do you start a qualitative research question?

I just want to know what are your own practices in writing a qualitative research question.

10 April 2020 5,702 6 View

What is the reason why older students and teachers do not want e-learning in Arab countries?

What is the reason why older students and teachers do not want e-learning in Arab countries?

30 March 2020 7,545 14 View

How climate change will influences human and animal behavioral change?

The role of climate change influencing the human behavior as well as economics interest

01 June 2021 0 0 View

How to compare two groups with only two measurements?

Hiiiii everyone! I have an enquiry on statistical analysis. I was looking for many forum and it's still cannot solve my problem. I want to compare means of two groups of data but only with two...

03 March 2021 8,796 3 View

What's the best way to measure growth rates in House sparrow chicks from day 2 to day 10?

What's the best way to measure growth rates in House sparrow chicks from day 2 to day 10? Since, the growth curve from day 2 to 10 won't be like the "Logistic curve" it might not follow logistic...

03 March 2021 1,401 3 View

How to increase a model accuracy ?

dear community, my model is based feature extraction from non stationary signals using discrete Wavelet Transform and then using statistical features then machine learning classifiers in order to...

03 March 2021 6,994 5 View

1. What is the impact of having different scales in a survey? and how can we solve this problem before and after data collection (Literature)?

1. What is the impact of having different scales in a survey? and how can we solve this problem before and after data collection (Literature-based reflection)? Thank you for your time and for...

03 March 2021 2,870 3 View

What degree of missing data in a particular case/participant results in Expectation-Maximisation no longer working?

I'm dealing with a mediation model and am using the PROCESS module in SPSS. Due to SPSS and PROCESS being limited in the imputation methods - being unable to handle multiple imputation - the other...

02 March 2021 4,362 1 View

How to calculate average trend in maximum annual NDVI from MODIS?

I am wanting to calculate the average trend in maximum annual NDVI in Iceland from 2010-2020 using MODIS MYD13Q1 V6. How would I do this? I have currently inserted the NDVI bands from the MODIS...

02 March 2021 752 2 View

Can NFL theorem be valid in infinite search space in ML?

NFL theorem is valid for algorithms training in fixed training set. However, the general characteristic of algorithms in expanded or open dataset has not been proved yet. Could you show your...

01 March 2021 1,189 3 View

What are the countries most affected by extreme rainfall as a result of climate change?

Increased heat, drought and insect outbreaks, all associated to climate change, have increased wildfires. Decreasing water supplies, declined agricultural yields, health impacts in cities owing to...

01 March 2021 7,168 9 View

Does anyone know how to plot my station to a section plot on Ocean Data View (ODV)?

I made a vertical section plot with WOA .nc file on ODV, and now I want to plot my stations (csv. file) in it. Does anyone know how to import my points to the section? They are two different...

01 March 2021 3,610 1 View