T-test and Mann-Whitney U test on groups with different sample sizes and variances?

Hello I have 2 groups with different sample sizes of (experts: 5 to 8) and (Users: 28 to 35) answering 21 questions on a 7 points Likert scale about the importance of some dimensions for...

31 January 2021 3,885 7 View

What are the types of optimization problems that can't be tackled by meta-heuristic and heuristic algorithms?

Any decision-making problem when precisely formulated within the framework of mathematics is posed as an optimization problem. There are so many ways, in fact, I think infinitely many ways one can...

06 September 2020 9,415 14 View

Is it possible to reduce tensile strength and increase compressive strength by adding any admixture to concrete?

Hello, I want to know is it possible that the compressive strength of concrete increase by reducing tensile strength? if yes, how we can explanation and justification this issue?

30 April 2020 4,489 7 View

What are the plans for exams and assessments of universities during corona virus pandemy?

What alternative ways universities use for academic assesment of students?

29 April 2020 3,091 1 View

Is there a specific way to discretize a continuous model to any arbitrary multi DOF system and extract the mode shape matrix in abaqus?

27 April 2020 239 3 View

What is best sampling method for cross sectional studies?

I want to research on liver disease patients behaviours and habits in shiraz city. How can I calculate sample size accurately? Thanks

23 March 2020 9,974 5 View

Anyone in kolkata working of LNCaP prostate cells?

I am working with prostate cancer cells, i want to know who is presently working with PCa cell lines in viro and in vivo in kolkata.any leeds will of great help.

07 March 2020 7,831 1 View

How can I find the IDT point of the following TGA curve which is related to a clay soil?

The attached file shows the TGA curve of a clay soil. Can anyone help me how to recognize the initial decomposition temperature (IDT) from this curve?

06 February 2020 6,944 3 View

How to isolate dorsal root ganglia in rat at lumber region?

For pathological investigation of sensory and motor nerves in lumber region of rat how to isolate and preserve

04 November 2019 8,974 1 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

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

Isolates of Hymenoscyphus fraxineus?

Dear Dr. Cai, my name is Simone Prospero and I work in the team of Phytopathology at the Swiss Federal Institute for Forest Snow and Landscape Research (WSL;...

01 March 2021 1,133 1 View

How to compute the internal consistency of a scale with ordinal items?

Hi community, I am trying to determine what is the best way to calculate the internal consistency of a newly developed self-esteem scale. I am working together with two other researchers on the...

28 February 2021 1,369 5 View

How to eliminate Steady state error from Reinforcement learning genetic algorithm code?

The following code (see 1st 2 images attached) is used to produce PID controller values that are designed to control the system (G). The code finds the PID controller values (noted as k) by using...

28 February 2021 6,560 14 View

Is there any Machine Learning/AI algorithm that lets you predict with incomplete features without missing value imputation process?

For instance, the model is trained with A,B,C,D,E features to predict F target. Then, I want to make prediction on a new data, but with only A,C,D,E is known without doing missing value imputation...

28 February 2021 1,556 6 View

What are the important topics in the field of Artificial Intelligence in Business world?

Dear All, I am doing my MS in Electronic Businesses. And I am interested in the AI field and its applications for businesses, its benefits, impacts, etc. What kind of scientific research dominate...

26 February 2021 8,816 6 View

LEDs on Vis Light photo degradation of MB water sol via N doped TiO2 in a mini flume?

Good day to all, I have no experience with light emitting diodes. I am building a glass mini flume to demonstrate the photo degradation of Methylene Blue in water running over self cleaning...

26 February 2021 4,026 5 View

How can I set up a good fit SEM model in AMOS?

I am trying to make an SEM model in AMOS for my dissertation but having some trouble with getting a good fit. I am looking for relationships between self-efficacy reported on a Likert scale and...

26 February 2021 8,642 4 View

CGA 300 Regulator for CO2 cylinder?

Has anyone ever tried to deliver CO2 with a CGA 300 regulator? I know that a CGA 320 regulator is standard for CO2. The issue is that I currently do not have any free CGA 320 regulators. I also...

25 February 2021 3,292 3 View

How to interpolate from a time-series database ?

Hi, I am having trouble with a problem, in the field of Optimal Control and the generation of optimal time-series. Let's consider a system, whose dynamics are represented by dx/dt =...

24 February 2021 9,105 2 View