DEA and Fuzzy-DEA softwares

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Difference hardness and elastic modulus?

hallo every one, I know that the hardness of a substance means how strongly it can resist against penetration of a harder substance and the E means after the release of a stress the material will...

21 February 2023 5,182 3 View

Adhesion Theory that describe the adhesion of the photo resist on wafer?

Hello every body, can some one please tell me which adhesion theory could describe the adhesion of photo resist on Wafer?? and with HMDS? thank you very much!!

10 January 2023 722 0 View

Is anybody conducting an experimental study on the effects of the product and the process approaches to teaching EFL listening?

The purpose being to determine which of these two approaches has a more positive effect on the development of students'EFL listening.

18 October 2022 7,202 2 View

Effect of the implantation on hardness from the photo resist?

Hallo, i did a nanoindentation on an implanted CAR and i found that when the CAR has a thicker layer, then it is less hard. Does anyone know why?? thank you very much!!! best regards chiko

28 August 2022 4,657 0 View

What can affect the hardness of CAR (layer thickness)?

Hello, i did a nanoidentation experiment : 1 CAR with 3 different layer thicknesses. My results show that the CAR is harder when it has thicker layer.. I can't find the reason in the...

11 August 2022 2,888 0 View

What can affect the adhesion of CAR?

Hello, i am making researches about what can affect (or what could improve) the adhesion of CAR if any one have articles for this topic, please let me know. Thank you very much!! best regards chiko

03 August 2022 7,146 3 View

Stitching Lines on fotoresists causes?

Hallo every one, i would like to know please what are the different causes for the stitching lines problem and why this problem appears when we exposure with Lithography machines of certain...

08 January 2022 4,621 0 View

Is there a standardized method for small mammalian identification keys based on the bone materials (Skull & Mandible) found in the pellets of owls?

Is there a standardized method for Mediterranean, North Africa, or Middle-East small mammalian identification keys based on the bone materials (Skull & Mandible) found in the pellets of owls?

07 August 2021 6,702 3 View

How I can cluster statistically bird species that prefer using different layers of the forest trees ?

In the forest birds are using different layers of forest trees from the soil to the canopy. Some birds such as iberian chiffchaffs are using the soil ground to set their nests while other species...

18 July 2020 2,872 1 View

How biological material (Animal carcasses, excrements) collected in field can be best stored for a later DNA and RNA extraction?

How biological materials (Animal carcasses, excrements) collected in field can be best stored for a later DNA and RNA extraction? what is the protocol to follwo and what are the storing...

25 April 2020 5,907 11 View

I have nearly 80,000 DMUs that I would like to measure their efficiency using the DEA model. Can you recommend a suitable software for this purpose?

I am facing challenges due to the large number of DMUs, and although I have found papers on the topic, they did not recommend a specific solution. Is there a tool able to process so many DMUs? I...

27 June 2024 7,415 0 View

Can fractional logistic regression be used in two stage DEA analysis? (In this technical efficiency is my dependent variable, bounded between 0 to 1)?

In most of the studies tobit regression is used but in tobit model my independent variable is not significant. Whether fractional logistic regression is also an appropriate technique to explore...

01 February 2024 4,641 2 View

How to estimate "output-specific" returns to scale of a multiproduct industry using DEA?

I am estimating a DEA for an industry with a multiproduct technology (two inputs and two ouptuts). When I run the "complete" model I find ambiguous results regarding scale economies. When I run...

06 January 2024 5,063 2 View

Hi, does anyone know the latest DEA approaches to evaluate Environmental Efficiency?

Does anyone know the latest DEA approaches to evaluate Environmental Efficiency? or what do you propose for that?

17 December 2023 5,871 2 View

Any DEA experts here?

Hi! DEA newbie here. How do I compute the technical efficiency of DMUs in Microsoft Excel if I have 2 or more outputs? I'm going for an output-oriented DEA with VRS assumptions, as suggested....

11 December 2023 7,842 2 View

How to assess the Impact of a policy on productive efficiency?

Dear colleagues, I am studying a policy of conditional transfers among federated entities. The policy has already been evaluated and has a positive effect on the outcome indicator of...

26 November 2023 2,543 0 View

It's possible to know the weights that the package deaR (in R program) assigns to each input?

Hi! I want to ask if is there any way to know the weights that the package assigns to each input to make the analysis. If is there any way that would be awesome to my research of forest Regards!

06 November 2023 4,316 0 View

Any example of Data Envelopment Analysis (DEA)?

Dear colleagues I am trying to use DEA to answer the following objectives. Any material I can follow as examples? 1. What is the empirical relationship between competition and medical scheme...

14 September 2023 7,118 0 View

How should I calculate ZSG -DEA and what software should I use ?

How should I calculate ZSG-DEA and what software should I use？

10 July 2023 9,264 3 View

How to calculate ZSG_ DEA, R, or stata okay?

How to calculate ZSG_ DEA, R, or stata okay? ZSG_ DEA programming is non-linear

11 June 2023 5,037 0 View