Some questions about DEA method

More Kellouche Abdelhakim's questions See All

What is the strategic vision for developing sports stadiums and infrastructure in the Arab world?

What are the forward-looking mechanisms for developing sports stadiums and infrastructure in Arab countries into tourist and commercial service places? In terms of thought first, then the legal aspect

12 September 2023 1,527 0 View

Do the refractive indices of glass increase from their values with the decrease in the density of glass? Is there a mathematical relationship ?

Experimental measurements show that the refractive index is a one-valued function of density.

26 July 2023 1,183 2 View

I need an explanation ,can the axial velocity decrease by increasing the Reynolds number in non-Newtonien fluids or specifically shear-thining fluids?

- the fluid used is a polymer solution in water - in small value of polymer concentration , where index n=0.79 , the axial velocity increase with increasing Reynolds number , and vice versa at...

03 May 2023 7,365 0 View

To calculate DPPH IC50. we take the initial concentrations of extract dillutions or the new concentrations of the extracts in the reaction medium ?

nothing to add

14 February 2023 3,564 3 View

What is the meaning of screening factors ?

I submitted a paper in the field of neutron/ gamma pulse shape discrimination and received a reviewer's comment requesting the following: "A scatter diagram and FoM diagram of screening factors...

31 December 2022 107 1 View

Can density values be extracted from gravity data points?

Greetings to all I would like to get an answer. Cos I have gravity data in CSV file and I wanna know how could I get the density values for 3d gravity model?

29 July 2022 6,154 20 View

What kind of filter can I use to detect the igneous rocks by oasis montaj?

I'm using gravity and aeromagnetic data

05 July 2022 6,330 0 View

Where can I get cracked version of oasis montaj 9.5?

Hello everybody, I'm PhD student, my currently studying using Potential field data and seismic data, due to that I tried many time to get cracked version of Oasis montaj 9.5 to map and model my...

27 December 2021 8,627 5 View

What are the ways to measure or to calculate the spontaneous polarization of a crystal ?

In order to study the magnetoelectric phenomena, I need the ways to measure or to calculate the spontaneous polarization of a crystal in wien2k code ?

06 October 2021 5,901 1 View

What is the difference Between the AC and DC conductivity.?

Hello Everyone I have analyzed polymers by dielectric relaxation spectroscopy I have found that the imaginary part of the electrical conductivity is negative is what normal.? and the second...

04 February 2021 3,592 1 View

Are there any instruments for studying time similar to the way it is in space?

There are a huge number of methods for studying objects in space, according to the senses (and not only). Mechanical, thermal, optical, acoustic, electrical, magnetic, based on particle beams,...

06 August 2024 7,102 0 View

Why did the authors extrapolate a phenotype that they experimentally proved in one bacterial strain across the whole genus of the organism?

I aim to be as skeptical as possible regarding whether a pair of orthologous genes results in the same phenotype in their different but related bacterial organisms under similar environmental...

05 August 2024 6,787 4 View

How to report results of Generalised Linear Mixed Models in a journal article?

Hi everyone, If you have written or come across any papers where Generalised Linear Mixed Models are used to examine intervention (e.g., in mental health) efficacy, could you please share the...

04 August 2024 4,130 4 View

What is the best sampling strategy?

I am conducting a qualitative study that uses interviews to investigate the perceptions of teachers about a particular leadership practice and I am focusing on 3 schools which have a total number...

01 August 2024 8,457 10 View

Is the peer-reviewed publication "MedieKultur: Journal of Media and Communication Research" (E-ISSN 1901-9726, P-ISSN : 0900-9671) a legitima?

Is the peer-reviewed publication "MedieKultur: Journal of Media and Communication Research" (ISSN Online: 1901-9726, ISSN Print: 0900-9671) a legitimate and credible scholarly journal in the field...

01 August 2024 629 3 View

Will combining different research methods help in my case?

Dear colleagues, I wonder if combining different research methods, namely literature review, semi-structured interviews and structured questionnaire survey will help to ensure validity and...

30 July 2024 5,154 17 View

Request for Advice: Starch Metabolism Research Project?

I am currently considering a research project focusing on a comparative analysis of starch metabolism in orchids and roses. I am particularly interested in identifying the types and quantities of...

30 July 2024 4,267 2 View

In terms of chaos, what is the necessary and sufficient condition for authoritarianism, permanent or temporary, to come to exist and persist?

Since 2016 Brexit, the world needed to change the thinking behind traditional democracy as the democratic landscape changed, yet traditional democratic thinkers and actors have been acting as if...

28 July 2024 6,515 1 View

How to maintain the drug concentration in cell culture study for long term?

I am working in the filed of long acting drugs with Nano formulation. I want to study the efficacy of my formulation in 2D cell cultures while this required media change on every two days. In such...

24 July 2024 8,696 0 View

Are there any alternatives to PhenoScanner?

I am currently conducting a mendelian randomization study, and I was attempting to use PhenoScanner to look for potential confounders associated with the selected SNPs (any SNPs significantly...

23 July 2024 5,703 0 View

Alexander Kolker

There is rich literature available on the various aspects of DEA. I suggest that you read some sources to get answers on your basic questions.

For example,

•Cooper, W., Seiford, L., Zhu, J., DATA ENVELOPMENT ANALYSIS: History, Models and Interpretations. 2011, Chapter 1. DOI: 10.1007/978-1-4419-6151-8_1

•Zhu, J. 2002, Quantitative Models for Performance Evaluation and Benchmarking: Data Envelopment Analysis with Spreadsheets and DEA Excel Solver, Kluwer Academic Publishers, Boston.

Kellouche Abdelhakim

Thank you Alexander Kolker for your response. But I need comparative studies between DEA and other approches.

Valerie Gorman

Try some basic searches on your key words comparative DEA wastewater.

Thank you for your reply Valerie Gorman . Must tell you that I have already tried but it is too vague.

I was wondering if anyone has ever done a search like this or come across an article. Any help would be welcome.