How to make a time series imputation benchmark ?

Hello ! In a work, I have to benchmark different algorithms to fill in missing values in time series. I insist on the fact that this is imputation and not forecasting. In my case, I have access...

24 February 2021 7,470 7 View

How to make PEDOT:PSS fluorescent?

Hello, I am spin coating thin films of PEDOT:PSS (Ossila, PH1000, ~50nm thick) on Si wafers and would like to make this thin films fluorescent. I have tried to dissolve fluorescent dyes in the...

05 January 2021 6,563 6 View

INEXT in R: Problems with processing data. Who can tell me, what I'm doing wrong?

Hello, I'm trying to compare two small datasets of Elasmobranchs landed by artisanal fisheries in Brazil via rarefaction curves that are based on sampling units, not abundances. Therefore, I...

02 April 2020 3,727 9 View

Small sample size in master thesis: What suggestions do you have how to statistically treat the data?

Dear everyone who might be able to help: Hello! I'm currently a student in marine science and I am writing my master thesis about Elasmobranchs and the big numbers that are being caught by...

19 February 2020 2,741 12 View

Can a SV40 polyA signal be inverted ?

Hi all. It may sound a bit silly but I was wondering whether a SV40 polyA signal could be inverted. For reasons, I have to introduce one in a plasmid of mine but I have only one unique...

13 November 2018 774 5 View

In CxG, where are collostructional preferences stored? Are they formal, functional or external properties of constructions?

Trying to apply key concepts from CxG to modality in English, I came across research by Boogaart (2009). He particularly looks at the modal verb 'kunnen' in Dutch and raises an interesting...

12 September 2018 3,687 9 View

Is there a method to calculate the spill over effect of a terrestrial protected area on wildlife?

This would be to quantify the value of some Canadian national parks for the communities living around them. A case study would be fine.

07 February 2017 1,509 8 View

What is the consequences of phosphatase activity alteration un human physiology?

Or do you know a drug (or a drug candidate in clinical trial) which impacts (directly or indirectly) phosphatase activity? Thank you!

12 October 2016 5,040 3 View

Has anyone encountered poorly efficient smartpooled siRNA?

05 May 2016 7,743 4 View

What glucose concentration should the C6 cell line be cultured at?

There are some descripencies in the literature on whether differentiated C6 astrocytes should be cultured under normal conditions at 6.9mM (ATCC) or 18 mM (some literature). Which one is it?

10 January 2016 1,982 1 View

Logistical regression using SPSS for a dichotomous dependent variable, with an independent variable of 1, 2, 5 and 10 seconds?

I have an experiment with 28 participants The independent variable is the times 1, 2, 5, and 10 used as the cross hairs during a task These 4 times were tested using 4 different blocks, each...

03 March 2021 9,692 2 View

How could I process data in RCT to include it in meta-analysis?

I'm in the process of doing a meta-analysis and have encountered some problems with the RCT data. One of my outcom is muscle strength. In one study, I have three different measurements of muscle...

25 February 2021 7,603 3 View

Is it mandatory to specify Subjects Combinations in Generalized Linear Mixed Models (SPSS)?

Hi all, I have data with two levels: lets think of the classic example of students and schools. When running the analysis in SPSS and selecting the Random Effects, we can select (we can or we...

24 February 2021 7,379 4 View

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

What will happen when we assume an upper bound of OFV lower than the global minimum OFV ?

if we assume 20 is the upper bound of an objective function (OF) based on permutation a square matrix (nxn) , The minimum value of the OF=22, then we run a random operator to compute the OF by...

14 February 2021 6,056 5 View

Pseudo random number generator in Matlab code ?

i want to implement pseudo random number generator in matlab ...i request to every one if someone have code these PRNG share with me SplitMix Permuted Congruential Generator (PCG) Random...

14 February 2021 6,828 7 View

What is the nature of this algorithm?

What is the kind of this algorithm; Input : square matrix Objective function = minimization of total movements cost of matrix based on permutative manner Constrains : Lower and upper bound of the...

04 February 2021 2,050 3 View

How to remove inter-year variation from my assessment of seasonal variation?

I have a 30 year dataset of fish sampling. I know from previous analyses that there is a huge amount of variation between years in catch rates. What I would like to do is create a plot that shows...

01 February 2021 3,980 5 View

Missing not at random imputation?

Hi, I have a case where data is missing not at random... in some cases entire chunks are missing at a time. However, after doing some digging I have found the proper values of some of these cases?...

01 February 2021 945 1 View

How Can we Avoid Overfitting easily in machine learning?

29 January 2021 9,307 6 View