Transformation of data from a rotated grid to a geographical coordinate system?

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How to improve results of system identification procedure?

Hello, I'm performing system identification of the lateral closed-loop dynamics of a quadrotor. My model receives a setpoint and should return position and acceleration. I've proposed a second...

07 February 2021 9,791 2 View

What is the maximum time duration allowed between photoresist coating and exposure?

I have coated the Silicon wafer with photoresist (AZ1518) but until the exposure (Laser Writer) I had to wait for more than a week (Laser Writer was not operative) - would the photoresist still be...

03 January 2021 9,640 4 View

What would happen if all nitrogen atoms in DNA were replaced by Carbon atoms ?

The DNA molecule is in the form of a double helix, The atoms which compose it are carbon, nitrogen, hydrogen, and phosphorus

02 January 2021 4,402 3 View

Which is more important for a journal? The impact factor or the quartile ranking?

I always found confusing both concepts! Which one do you think is more important? I give an example: The journal of "Theoretical and Applied Climatology" has an impact factor of 2.88, but it's a...

01 December 2020 8,608 19 View

Who can collaborate with us?

Salam (Hello)! We have prepared some new compounds with important potential to inhibit viruses. We are interested in inhibition of Hepatetis-B/C, Nipah, Nil and coronavirus. Who can collaborate...

22 November 2020 3,850 14 View

What is the most effective way to transfect HAP1 cells?

I am starting a project with the HAP1 cell line and previously our lab has had difficulty to transfect them. -we have nucleofection equipment - but have only been getting ~10% transfection -i...

19 October 2020 5,340 2 View

What effect do epidemics have on cerebral physiology?

How trauma and fear of infection can affect brain functions and structures?

10 October 2020 6,642 1 View

What are the XRD analysis conditions of the cement, sand and Limestone ?

I am a Phd student and I need to do XRD analysis on my pouder samples namely ( cement- sand- limestone and calcined clay). I was asked asked to specify the analysis conditions: -the nature of...

07 October 2020 5,737 6 View

Why I couldn't obtain a gel from APTES? Does the Amine group affect the gelation process?

I am trying to make a gel from APTES as a precursor using the sol-gel reaction. I tried different solvents (ethanol, acetone, DMF) and different catalysts (basic and acidic) with different...

03 October 2020 9,673 5 View

Best meta-analytic approach with Mean, SD, Sample size for regional values of MRI measure?

I'm interested in evaluting the evidence in the literature I've collected for spatial/anatomical variation in an MRI measure. The data consists of mean values, standard deviations and sample...

14 September 2020 8,910 1 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

Binary Logistic Generalized Linear Mixed model in SPSS. Is it doable?

I want to analyses the proportion of swimming sperm of three species of fish in two salinities. To analyse the proportion of swimming sperm in a Generalized Linear Model, I would use a Binary...

03 March 2021 2,297 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

After a reference from Int J Body Compos Res, can any body help?

Hi, I am after the reference below, my library says it cannot obtain a copy either locally or internationally, any help appreciated! Chris Wang ZM, Heshka S, Wielopolski L, Pi-Sunyer FX, Pierson...

03 March 2021 6,193 1 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 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

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 normalise data on OPM package from R Studio ?

Good afternoon, I recently used OmniLog from BIOLOG for my experimentations : I tested the metabolism of different strains on 2 types of plates. I have 16 strains of 3 different groups...

02 March 2021 3,584 1 View