What is the ideal value of UACI for image encryption scheme?

UACI - Unified Averaged Changed Intensity between cipher images. Why some papers refer ideal value to be 33.33 and some refer it to be 33.46? Which is the correct value? (In reference to image...

11 February 2021 9,562 2 View

Should a better value for UACI be below or closer to ideal values or higher as possible?

The ideal theoretical value for UACI(Unified Average Changed Intensity) is 33.33% for testing the robustness of image encryption algorithm against differential attacks. Is it better to have a UACI...

30 January 2021 2,016 3 View

How to find the chi square test value for histograms of plain and cipher image?

I want to test the uniformness of values in histogram through chi-square analysis in an image encryption algorithm.

29 January 2021 4,093 2 View

What are different ways to compare the histogram of cipher images from various encryption schemes?

Is there a metric to find if one histogram of cipher image is better than other? I tried calculating the variance of the image but couldn't get the intended results. Are there ways to compare...

28 January 2021 479 3 View

How is the variance for an image exactly computed to test the uniformness of its histogram?

I am trying to compute the variance of a plain and cipher grayscale LENA image... I found in a paper that variance value is equal to 630780 for a plain Lena image while if I calculate I find it...

28 January 2021 8,036 5 View

Should the correlation between adjacent pixels in a cipher image be low or close to zero as possible?

This question in the relation to calculating the horizontal, vertical, and diagonal correlation of a cipher image in an encryption algorithm. I have read that the correlation values should be as...

13 January 2021 1,297 4 View

What are some of the efficient techniques used for image scrambling?

I am using 3D Arnold transform for my EC-ElGamal encryption technique but it consumes a lot of time during the execution of the program using Python. So I was wondering if there are BETTER ideas...

07 January 2021 205 2 View

What are the assumptions and limitations of Miner's rule ? Is there any better cumulative damage model available for steel?

What are the assumptions behind miner's rule? Is there any cumulative damage model that takes care of these assumptions?

14 December 2020 333 1 View

How do i code to get the correlation coefficient along horizontal, vertical and diagonal for plain and cipher images?

I am trying to do the correlation analysis for grayscale images and their ciphers in Python or MATLAB. But I don't understand how to code the same. Also, I didn't get any function or existing code...

01 December 2020 6,388 3 View

Is IMAGE ENCRYPTION using ECC a good research area?

There have been existing works like Singh and Singh(2015) and subsequently one in 2017 that performed Image encryption using ECC. But I have been seeing ppl comment that encryption with ECC is not...

14 October 2020 4,479 5 View

How to get started building and analyzing a UTAUT model?

Hello all, I need help getting started building and analyzing a UTATU model. I have a survey ready with some questions but I had some confusions on UATAUT and on how to analyze the data. I will...

02 March 2021 9,271 1 View

How can I set up a good fit SEM model in AMOS?

I am trying to make an SEM model in AMOS for my dissertation but having some trouble with getting a good fit. I am looking for relationships between self-efficacy reported on a Likert scale and...

26 February 2021 8,642 4 View

How to run Cross-lagged panel Design on AMOS?

25 February 2021 3,126 1 View

I'm using AMOS for SEM--Why does my chi-square value change when I specify groups?

My study involves 2 groups (Black and Latinx participants, N=816). I've run my structural equation models with the data all together and will get a completely different chi-square when I specify...

22 February 2021 9,342 4 View

Are negative valued indicators allowed in SEM?

Hello, Using secondary and continuous data, i am trying to run a SEM with two latents. One indicator has both negative and positive values. Is it wrong? (I am gonna run the model in AMOS) Thx on...

14 February 2021 2,801 8 View

Moderation test of reflective construct in AMOS?

Hi dear researchers, I need your guidance on the moderation test of a reflective construct (i.e., Uncertainty avoidance with three items) with high and low UA. I run the moderation test with the...

08 February 2021 370 7 View

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When I research the ransomware detection with adversarial examples, I extracted the dataset from the strings based on cuckoo dynamic analysis. Those datasets are based on the count of each string....

08 February 2021 7,049 3 View

How to obtain confidence intervals in Amos?

Dear all, I would like to know your opinion on the following issue I am struggling with. I am estimating a multigroup model with several factors all correlated among them (they represent...

04 February 2021 1,381 4 View

AMOS - Question regarding correlated errors in CFA, what next?

Hi all, Hopefully this is just a quick question for those of you au fait with CFA in AMOS. I am brand new to this. I'm looking at model (small sample size, yes I know) with 5 latent variables....

26 January 2021 4,425 2 View

Is it possible to implement a Latent Profile Analysis with AMOS?

Could you kindly recommend me any useful totorials to learn how this statistical anaysis should be applied? Thanks

10 January 2021 3,633 2 View