What is the suggested courant number for an aerodynamic problem?

I am working with pressure based steady aerodynamics of a car. I found that, courant number plays an important role in convergence. In transient study it should not be greater than 1 but in...

28 July 2020 1,915 3 View

What is the sampling technique used in an online survey?

I am asking about the sampling technique used in an online survey. The survey will be distributed online via social media channels. We are targeting adolescents. The sample size will be estimated...

11 July 2020 8,685 14 View

What is the best free program for the analysis of H-NMR spectrum?

I need a free program to analyze H-NMR spectrum. Any recommendations?

29 May 2020 1,561 2 View

Hi Everyone: I have files with 300 dpi i want to keep the same resolution when i insert them into word docx. How can i do that ?

I keep loosing resolution once it is inserted in the word document. Thanks in Advance Noha

20 April 2020 7,241 3 View

What's the procedure for validation test of a new design of product (Say Heat Exchanger)?

after 3D design of all components of the Heat Exchanger geometry we do assembly and finalization of the geometry, in CFD analysis we change the boundary conditions and it refers us to the...

27 October 2019 9,095 3 View

Is the annealing temp. for a pair of primers is set according to qpcr kit itself or the primer itself? and which is better ... 2 or 3 step- reaction?

Hi, I am working on gene expression, and want to ask about 2 issues ... I am using SYBR green, but I am confused because each kit has its own specific Ta, while the primer itself has a different...

23 October 2019 9,927 3 View

As regard cDNA synthesis by COSMO cDNA kit Willowfort the recommended RNA concentration is 0.4 microgram, how to be calculated ?

RNA by nanodrop ranged from 60-100ng/ml extracted from blood by quiagen kit

24 June 2019 2,380 1 View

In the comprehensive review paper, Is the quality of the collected articles important?

When I plan to write a comprehensive review paper about a particular topic (X). My personal opinion, I should collect all articles about X, without care about the quality of these articles. After...

25 January 2019 4,562 8 View

What are the most common big data preprocessing techniques and recent research issues?

I am interested in learning more about preprocessing step within the analysis process of big data I need to know more about the recent methodologies, techniques and the relevant research issues.

08 November 2018 4,059 3 View

HOW can i minimize the number of hits made by the designed primer to only the intended sequence?

i have designed a primer but i found it gives 200 hits over than the intended sequence (5 of them in the organism that i work with). this give poor pcr results. i want to avoid this but i don,t...

01 September 2018 3,064 3 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

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02 March 2021 3,060 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

How to add a journal?

I would like to know how to register the journal Flora Montiberica (ISSN 1138-5952 - eISSN 1988-799X) in Research Gate.

02 March 2021 8,156 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

How does one access the Cranet survey data on HRM practices?

Hello, The Cranet website does not provide any lead to the data obtained from their multinational survey on HRM practices. Any help on accessing the data would be most appreciated. Thank...

01 March 2021 9,536 3 View