What are the saturated salt solutions that can give specific relative humidity of 35%, 65% and 95% for conditioning wood specimens?

Due to the unavailability of climate rooms, I want to carry out an experiment that require the use of certain saturated salt solutions especially those that can condition the wood specimen to 35%,...

25 February 2021 8,139 1 View

What's the concentration recommend for recombinant protein use in western blotting?

I'm currently working having problem with the concentration for recombinant protein use in western blot, the one been used is Recombinant Human CD19 Fc Chimera Protein-rndsystem which does not...

24 February 2021 8,514 3 View

What software programs can directly simulate Additive Manufacturing Directed Energy Deposition (DED)?

I understand there are a lot of software programs that can simulate DED by going through specific modeling, simulation, and commands. For me, that was time consuming and results were not accurate....

24 February 2021 4,428 3 View

How to perform Haldane correction on SPSS?

I was wondering if anyone knew how to perform the Haldane correction for SPSS (this is the definition of the correction -...

21 February 2021 2,882 1 View

How can I multiply values with standard distribution and with triangular distribution?

I am calculating emissions considering the uncertainty of the data to do Monte Carlo simulation. Some variables such as yields have normal, lognormal or even uniform distributions. These must be...

03 February 2021 6,318 5 View

Does Location Map of Informal Settlements in South Africa exist?

I urgently need a map that shows the point locations of informal settlements in South Africa. I am currently working on a study that seeks to relate protests location to the location of informal...

02 February 2021 4,113 7 View

Meta-analysis of different studies that utilise the same public databases for cases?

I am in the process of conducting a meta-analysis assessing effect of adjunct radiotherapy on overall survival. Some of the final studies included for analysis use the same national databases for...

02 February 2021 9,211 2 View

What can I do if DNA OD260/280 is either 1.6 or higher than 3?

26 January 2021 7,830 4 View

Any suggestion on the methodology for Soil depth and ph mapping using machine learning ?

Hello, Please, I need your opinion. I want to map the depth of 20,000 hectares of land. I have sampling points of 20,000 with their respective depth attributes and photos of the topsoil(less than...

31 December 2020 4,325 3 View

How To Determine Raster-Based Path Radiance?

I am working on aerosol retrieval using a radiative transfer equation with Landsat 8 OLI, and I am having difficulty determining the raster-based path radiance. I am using the formula by Felix C....

11 December 2020 6,662 2 View

What test should i use in comparing the correlation between categorical and continuous variables?

Dear all, I have the variable (Surgery duration) represented by values in minutes and the variable (preoperative neuropraxia cases) represented as (Yes/No) values. I want to compare these two...

03 March 2021 5,427 5 View

Which regression is best fit when moderator is categorical and dependent variable is latent in nature?

I am using categorical variables as a moderator variable, and my dependent, mediator and IV variables are latent in nature. Which regression test I can apply. As logistic regression is for binary...

11 February 2021 1,584 3 View

Does anyone have a stack of images of action potentials or abnormal brain scans?

I need a stack of black and white .jpeg/.tiff/.jpg/.png images across time of either action potentials, neurons firing, or brain scans (comparing disease and normal brain, disease progression,...

09 February 2021 2,648 3 View

ETA-squared statistics used to correlate observed versus measured variables?

Can the eta coefficient be used when the categorical and the quantitative variable is dependent? E.g. in the field, I made a prediction into a category (e.g. high, low or medium) of what I think a...

08 February 2021 3,756 3 View

What is the best way to encode categorical variables in datasets with many features and avoid increasing dimensionality of the dataset?

I am working with a large dataset that has many categorical variables with many classes in each variable. I want to encode the categorical variables without increasing the dimensionality of the...

31 January 2021 6,986 3 View

Is it possible to compare two unequal sample sizes with categorical data on SPSS?

I have a small dataset collected from SMEs and I need to compare the demographic characteristics between SMEs with access to external finance and SMEs who do not have access to finance on SPSS....

28 January 2021 2,503 4 View

Study Design for 3 Interval DVs, mixed IVs?

I'm conducting a study on mental health terminology on social media for a group project. We have three interval DVs measured through likert scales and three IVs. The IVs are social media usage...

28 January 2021 2,871 3 View

S Is ordered logit models can applied when the DV span from negative to positive values?

Trying to understand changes in public transit use following Covid-19, our categorical DV includes 5 values: 1 and 2 indicate that participants reduced their used (to a large & moderate extent...

26 January 2021 5,918 3 View

Which statistical test is suitable to test if 2 explanatory variables (different scales: ordinal & categorical) predict dependent variable (ordinal)?

I'm working on survey data that is inclusive of ordinal (1-5 rating scale), categorical (yes/no), nominal (frequency response). I have reduced many ordinal variables (those in ordinal scale) to 3...

26 January 2021 804 12 View

Should I run an ordinal regression, or a multiple regression?

Currently I am working to defend my thesis, and I ran into a technical question while analyzing my data: Should I conduct an ordinal or a multiple regression? My model is set up such that I have...

20 January 2021 2,104 3 View