What statistical test should I use for the comparison of proportion between groups, one of the proportion being 0?

I would like to compare the proportion of mice with resistant bacteria in their faeces. I have three groups, and in one of them not a single mouse has resistant bacteria. I cannot perform Chi2...

25 August 2020 3,579 2 View

How do you deal with large ANSYS Workbench analyses?

Hello, I am trying to evaluate stresses on a model which is quite large and I have memory limitations. I've seen cases ( http://www.padtinc.com/blog/submodeling_ansys_mechanical/ ) where people...

10 July 2020 5,913 3 View

Lamp (bulb) for iCycler iA iQ5 bio-rad..?

Hello everyone, Has anyone ever change the bulb (lamp) in a iCycler iA iQ5 bio-rad? Bio-rad does not sell this lamp anymore, and I'm searching for an alternative solution. However a bulb with...

27 November 2019 2,467 1 View

I was wondering if there are qualitative articles about what leads to impulse buying?

07 October 2019 850 5 View

I'm looking for a PK software that can simulate time-concentration graphs via inputting various variables (ie. Vd, kel, F, etc.)?

Thanks in advance! Purpose is for teaching.

19 August 2019 6,293 1 View

Can any one help me with an analysis grid of school books including indicators on the development of logical reasoning ?

Can any one help me with an analysis grid of school books including indicators on the development of logical reasoning in mathematics, experimental sciences ?

11 June 2019 3,525 4 View

How to blast a fast file with multiple sequences in a genome?

Hello to all, I have a complete genome of a plant and a fast file with multiple sequences of a specific protein ( nucleotide sequence). I want to blast the file into the genome to see if these...

08 February 2019 3,473 5 View

Formvar-coated grids - grey colour, best method?

I need to prepare formvar-coated grids for TEM. I usually use an uncommon method of a drop of formvar on water, however the formvar film is usually uneven. Another and more common method is by...

03 December 2018 2,250 5 View

Long term storage of Cholera Toxin B ?

Hi, I am planning to use Cholera Toxin B for neuroanatomical tracing. The CTB conjugated with Alexa Fluor dyes can be obtained in the solid (500 ug or 100 ug powder) form from suppliers and,...

05 November 2017 8,721 1 View

Hippurate hydrolysis test for Campylobacter jejuni negative after long term storage at -70?

Hippurate hydrolysis test was positive for Campylobacter jejuni ATCC 33560 and for other C. jejuni isolated from stool and other human samples. After 6 month storage at -70 degree hippurrate...

16 May 2017 4,535 4 View

Can we classify HV and LV lines based on line length?

I have dataset which shows the length of power lines. I need to classify the lines based on the line length. Is there a rule to classify the High voltage (HV) and low voltage (LV) lines based on...

03 March 2021 4,116 4 View

What analysis to choose with a large neste dataset and clearly skewed or kurtotic distributions?

Hello! I have a dataset of n=3000 nested within 8 countries with approximately 200 or 400 responses in each country. I originally planned to perform multilevel modelling with 4 dependent variables...

02 March 2021 6,865 1 View

Do you know any MR image dataset?

I would like to research on MR images (0.5T and 3T). Can you please suggest some websites that I can download dataset including both 0.5T and 3T MR images? Thank you.

02 March 2021 7,735 3 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

Is there any research regarding how training and development is going to change in the era of Fourth Industrial Revolution?

As the organizations getting prepared for the fourth industrial revolution, to enhance the skills of their workforce what type of changes are necessary and going to occur in the training and...

01 March 2021 3,199 3 View

Does anyone have kinetic and kinematic dataset for gait classification?

I want to differentiate between normal and abnormal movement. For this reason, I am looking forward to this type of dataset.

01 March 2021 9,485 1 View

Which group formation theory do you recommend for projects that aim to bring together entrepreneurs for training for regional development?

I would like to have ideas about which theories of group formation are suitable for entrepreneurial training projects, with the aim of creating bonds, building trust, and collaboration for...

28 February 2021 4,223 2 View

Where can I find public datasets with Covid-19 patient information?

Hi, I'm looking for public datasets that have CT, X-ray information, or medical records for patients with Covid-19. Does anyone have suggestions?

28 February 2021 4,760 3 View

I need dataset for recommandation system?

Hi every body I need to collect datasets from different source to work on recommendation system algorithms, could you advise me how collect data?

27 February 2021 7,063 7 View

How to evaluate unsupervised clustering metrics when some elements do not have a cluster label in the result?

I run algorithms like HDBSCAN and MeanShift, and compare them with K-means and GaussianMixture. The first two algorithms do not return cluster labels for some elements in the dataset. My question...

27 February 2021 428 3 View