What are the options for global scale hydrology DEM?

Hello, I am working on a global scale hydrology GIS project delineating global watersheds and doing some data analysis. I have in the past used hydro1K from the USGS that cover the entire world....

18 February 2021 5,109 5 View

Can anyone help me with meta-analyses on classification ML models?

I am working on a meta-analysis for classification methods (end goal is developing a tool selection framework) and I am having a difficult time finding similar studies. Does anyone know any...

25 October 2020 2,323 4 View

Hello, can anyone recommend source of a user friendly and readily available Analytic Hierarchy Process (AHP) software for my project work?

Hello, I'm seeking to make an optimal oil and gas multi-criteria project management decision using Analytic Hierarchy Process (AHP). Thanks to revert with source of applicable professional...

01 September 2020 5,559 15 View

What approach is most suitable for boosting innovation in a Nigeria's tertiary institution to enable it provide solutions to societal challenges?

This question stems from the fact that Nigeria has over 20 Electrical Engineering departments that have not provided the Nigerian society with a sustainable, environmental friendly option to curb...

04 September 2019 5,166 6 View

How to take SEM (Scanning Electron Microscopy) and TEM (Transmission Electron Microscopy)?

I want to take the SEM and TEM images of samples I synthesized. I synthesized g-C3N4 (Graphitic Carbon Nitride). If I need to take SEM and TEM, should I disperse the obtained powder in a medium...

23 August 2019 1,892 9 View

What are the basic tests required for Supercapacitors?

I am planning to shift focus from batteries to supercapacitors. I would like to know if I synthesize materials for a supercapacitor, WHAT are the basic tests that need to be conducted?

16 August 2019 5,184 3 View

What are the possible solvent mediums to disperse g-C3N4 (Graphitic Carbon Nitride) ?

I need to disperse g-C3N4 in a medium. Please give suggestions. I want to create a thin film; MXene is dispersible in water, so I want to know if g-C3N4 is also dispersible in water, so that I can...

12 August 2019 667 2 View

How do you calculate CFU/g soil?

Dear All, I need your help on how to calculate CFU/g soil. I would greatly appreciate if you could check if my calculation is correct. 5 g of soil was placed into 50 mL water. The solution was...

21 April 2019 8,013 8 View

Can I replace missing values in a binary data with a zero?

I am working on three different survey data; each has 20 binary variables for Hierarchical Cluster Analysis (HCA) on SPSS. Out of the 441, 2869 and 2543 total samples for each survey, only 42...

22 October 2018 6,549 10 View

How reliable is X-ray flourescence (XRF) in determining elemental contents of biological samples?

I want to seek the opinions of experts in the field of environmental science. I intend to determine elemental contents of some freeze dried plant samples collected after an experiment. Since I...

12 September 2017 4,237 10 View

How to perform statistical analysis of coefficients extracted from transform techniques?

I am studying the potential of DCT and FFT coefficients extracted from a signal to classify the different objects that emit the signal. I applied the Shapiro-Wilk to confirm that data was not...

01 March 2021 8,079 2 View

What could be the cause to have an E.coli DH10B transformed with pUC18 to grow in MKL + ampicillin but is not LAC+?

Hello everyone, I did a transformation of E. coli DH10B using pUC18 plasmid. The bacterias did grow on MKL medium with ampicillin but the colonies showed a white/pink colour and the medium was...

08 February 2021 9,720 3 View

Can I know how to apply contourlet transform for signals in MATLAB?Must I first convert 1D signal to 2D image in order to do this method?

Can I know how to apply contourlet transform for signals in MATLAB?Must I first convert 1D signal to 2D image in order to do this method?

01 February 2021 3,735 3 View

What are the pretrained-language-model that is obviously better than BERT and RoBERTa?

19 January 2021 602 2 View

WHOQOL - bref. test: how to conduct the correction?

18 January 2021 7,257 2 View

How to compute the phase from a fringe pattern using Hilbert Huang Transform in MATLAB?

I have computed line Wise IMF from the fringe data using empirical mode decomposition (EMD). For each line Segment I have more than five IMF sets but i am not able to understand that how to...

10 January 2021 5,036 1 View

Which statistical test is best to run on a heavily right-skewed dependent variable?

My dependent variable when graphed is heavily right-skewed. All attempts to transform it has failed (Log, Log10, Sqrt, ..). The most ideal test I would like to run is a multiple linear...

07 January 2021 2,705 4 View

How can I estimate and plot Logarithmic Error Bars (in Excel, preferably)?

Dear Dr.colleagues, I am currently plotting the dynamics of an infection in Excel. For each sampling day, I plotted the mean infection load of the population, using the standard error for the...

07 January 2021 2,069 3 View

Why I am not getting cultures of DH5 alpha and BL21 cells after transformation?

Even if I get them cultured colonies are very less and almost not transferable and grows very slowly in the media. I checked cells by transforming with control vector. I changed antibiotic also...

06 January 2021 1,013 3 View

How i can fix this problem for python jupyter" Unable to allocate 10.4 GiB for an array with shape (50000, 223369) and data type int8"?

my code: #building tf-idf from sklearn.feature_extraction.text import TfidfVectorizer vectorizer = TfidfVectorizer(analyzer = message_cleaning) #X = vectorizer.fit_transform(corpus) X =...

28 December 2020 3,624 2 View