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A DNA Based Colour Image Encryption Scheme Using A Convolutional Autoencoder

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arXiv 2022年

作者： Ahmed, Fawad Rehman, Muneeb Ur Ahmad, Jawad Khan, Muhammad Shahbaz Boulila, Wadii Srivastava, Gautam Lin, Jerry Chun-Wei Buchanan, William J. Department of Cyber Security Pakistan Navy Engineering College NUST Karachi75350 Pakistan Department of Electrical Engineering HITEC University Taxila Pakistan School of Computing Edinburgh Napier University Edinburgh United Kingdom Department of Electrical Engineering HITEC University Taxila47080 Pakistan Robotics and Internet-of-Things Laboratory Prince Sultan University Riyadh Saudi Arabia RIADI Laboratory University of Manouba Manouba Tunisia Math and Computer Science Brandon University Brandon Canada Research Centre for Interneural Computing China Medical University Taichung Taiwan Dept of Computer Science and Math Lebanese American University Beirut Lebanon Western Norway University of Applied Sciences Bergen Norway

With the advancement in technology, digital images can easily be transmitted and stored over the Internet. Encryption is used to avoid illegal interception of digital images. Encrypting large-sized colour images in their original dimension generally results in low encryption/decryption speed along with exerting a burden on the limited bandwidth of the transmission channel. To address the aforementioned issues, a new encryption scheme for colour images employing convolutional autoencoder, DNA and chaos is presented in this paper. The proposed scheme has two main modules, the dimensionality conversion module using the proposed convolutional autoencoder, and the encryption/decryption module using DNA and chaos. The dimension of the input colour image is first reduced from N × M × 3 toP × Q gray-scale image using the encoder. Encryption and decryption are then performed in the reduced dimension space. The decrypted gray-scale image is upsampled to obtain the original colour image having dimension N × M × 3. The training and validation accuracy of the proposed autoencoder is 97% and 95%, respectively. Once the autoencoder is trained, it can be used to reduce and subsequently increase the dimension of any arbitrary input colour image. The efficacy of the designed autoencoder has been demonstrated by the successful reconstruction of the compressed image into the original colour image with negligible perceptual distortion. The second major contribution presented in this paper is an image encryption scheme using DNA along with multiple chaotic sequences and substitution boxes. The security of the proposed image encryption algorithm has been gauged using several evaluation parameters, such as histogram of the cipher image, entropy, NPCR, UACI, key sensitivity, contrast, etc. The experimental results of the proposed scheme demonstrate its effectiveness to perform colour image encryption. © 2022, CC BY.

关键词： DNA

Computing Methods in Optimization Problems 1

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丛书名： Lecture Notes in Economics and math.matical Systems

1000年

作者： G. Arienti A. Colonelli Daneri M. Auslender E. J. Beltrami L. F. Buchanan A. R. Stubberud Philippe A. Clavier R. Cosaert E. Gottzein A. De Maio G. Guardabassi A. Locatelli S. Rinaldi Mark Enns H. O. Fattorini Jean Fave F. Caroti Ghelli D. H. Jacobson S. Kau K. S. P. Kumar Henry J. Kelley Walter F. Denham Angelo Miele Radivoj Petrović J. K. Skwirzynski R. G. Stefanek P. V. Kokotović L. E. Weaver D. G. Schultz

Distributed BACI: a toolkit for distributed applications

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Concurrency and Computation: Practice and Experience 2000年第1期12卷

作者： Steven Burdette Tracy Camp Bill Bynum Department of Computer Science The University of Alabama Tuscaloosa AL 35487 U.S.A. Department of Math. and Computer Sciences Colorado School of Mines Golden CO 80401 U.S.A. Department of Computer Science College of William and Mary Williamsburg VA 23187 U.S.A.

We have built a distributed Ben-Ari Concurrent Interpreter (distributed BACI), which provides easy-to-use commands to implement distributed algorithms. In distributed BACI, a send process, receive process, and interpreter process combine to provide the distributed system functionality necessary to implement distributed algorithms. In this paper, we introduce the distributed BACI toolkit, illustrate the toolkit with a distributed mutual exclusion algorithm, and discuss how the toolkit is implemented. Copyright © 2000 John Wiley & Sons, Ltd.

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An Example of a Fractional Model of Enzymatic Reactions with Bi-Bi Random Mechanism

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SSRN

SSRN 2024年

作者： Nhan, Thái Anh Mai, Vinh Quang Department of Mathematics Thu Dau Mot University 06 Tran Van On Binh Duong Thu Dau Mot820000 Viet Nam Department of Mathematics and Computer Science Santa Clara University 500 El Camino Real Santa ClaraCA95053 United States Applied Math and Computational Research Division Lawrence Berkeley National Laboratory BerkeleyCA94720 United States

Enzymes are proteins capable of accelerating biochemical reactions in the metabolism process. A wide range of applications of enzymes has been developed in biotechnology, industry, pharmaceuticals, biofuels. In this paper, we give a main example which shows how to develop a fractional math.matical model that describes the enzymatic reactions with Bi-Bi random mechanism. © 2024, The Authors. All rights reserved.

关键词： Enzymes

The square roots of some classical operators

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arXiv 2021年

作者： Mashreghi, Javad Ptak, Marek Ross, William T. Département de Mathématiques et de Statistique Université Laval QuébecQCG1K 0A6 Canada Department of Applied Mathematics University of Agriculture Ul. Balicka 253C Kraków30-198 Poland Department of Mathematics and Computer Science University of Richmond RichmondVA23173 United States

In this paper we give complete descriptions of the set of square roots of certain classical operators, often providing specific formulas. The classical operators included in this discussion are the square of the unilateral shift, the Volterra operator, certain compressed shifts, the unilateral shift plus its adjoint, the Hilbert matrix, and the Cesàro operator. © 2021, CC BY.

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CONJUGATIONS OF UNITARY OPERATORS, I

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arXiv 2024年

If U is a unitary operator on a separable complex Hilbert space H, an application of the spectral theorem says there is a conjugation C on H (an antilinear, involutive, isometry on H) for which CUC = U∗. In this paper, we fix a unitary operator U and describe all of the conjugations C which satisfy this property. As a consequence of our results, we show that a subspace is hyperinvariant for U if and only if it is invariant for any conjugation C for which CUC = U∗MSC Codes 47A465 © 2024, CC BY.

关键词： C (programming language)

Conjugations of Unitary Operators, II

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arXiv 2024年

作者： Mashreghi, Javad Ptak, Marek Ross, William T. Département dee Mathématiques et de Statistique Université Laval QuébecQCG1K 0A6 Canada Department of Applied Mathematics University of Agriculture UL. Balicka 253C Kraków30-198 Poland Department of Mathematics and Computer Science University of Richmond RichmondVA23173 United States

For a given unitary operator U on a separable complex Hilbert space H, we describe the set Cc(U) of all conjugations C (antilinear, isometric, and involutive maps) on H for which CUC = U. As this set might be empty, w... 详细信息

关键词： Hilbert spaces

Which Activation Function Works Best for Training Artificial Pancreas: Empirical Fact and Its Theoretical Explanation

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Which Activation Function Works Best for Training Artificial...

IEEE Symposium Series on Computational Intelligence (SSCI)

作者： Lehel Dénes-Fazakas László Szilágyi György Eigner Olga Kosheleva Martine Ceberio Vladik Kreinovich Physiological Controls Research Center Appl. Informatics & Appl. Math. Doctoral School Óbuda University Budapest Hungary Computational Intelligence Res. Group Sapientia University Tg. Mures Romania Physiological Controls Res. Center Óbuda University Budapest Hungary Physiological Controls Res. Center John von Neumann Faculty of Informatics Biomatics and Applied AI Institute Obuda University Budapest Hungary Department of Teacher Education University of Texas at El Paso El Paso Texas USA Department of Computer Science University of Texas at El Paso El Paso Texas USA

One of the most effective ways to help patients at the dangerous levels of diabetes is an artificial pancreas, a device that constantly monitors the patient's blood sugar level and injects insulin based on this level. Patient's reaction to insulin is highly individualized, so the artificial pancreas needs to be trained on each patient. It turns out that the best training results are attained when instead of the usual ReLU neurons, we use their minor modification known as Exponential Linear Units (ELU). In this paper, we provide a theoretical explanation for the empirically observed effectiveness of ELUs.

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Accuracy and reliability of assessment of severity of illness before and after an educational intervention

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Journal of Evaluation in Clinical Practice 1996年第4期2卷 265-271页

作者： Shiels, Christopher Hutchinson, Allen Eccles, Martin Gardiner, Eric Smoljanovic, Lada Department of Public Health Medicine University of Hull Hull United Kingdom Centre for Health Services Research University of Newcastle-upon-Tyne Newcastle-upon-Tyne United Kingdom Dept. of Pure Math. and Statistics University of Hull Hull United Kingdom Department of Public Health Medicine Applied Science 1 Building University of Hull Hull HU6 7RX Cottingham Road United Kingdom

Severity-of-illness measurement is considered to be an important factor in the risk adjustment of medical outcomes. However, for those measures that involve a high level of clinical judgment, strategies have to be developed to maximize the consistency of rating severity that can be implemented, especially when rating is based upon medical record review. A group of 25 clinicians were sent the same set of 14 patient records, and requested to use the Duke University Severity of Illness (DUSOI) checklist to rate the severity of patients' illness. Written instructions for the use of this instrument were provided. A short educational intervention was then made by the research team, and the clinicians were sent the same set of records to be rated again. Any improvement in the accuracy and reliability of severity assessment over the two ratings was then studied. The educational intervention resulted in identification of fewer irrelevant health problems. However, it had little impact upon the reliability of severity scoring itself, as measured by the intraclass correlation coefficient. Measuring severity of illness is a conceptually complex procedure. However, given its role in outcome interpretation, it may be worth pursuing strategies aimed at maximizing consistency of clinician rating. There are a number of options, including improved written instructions and more intensive training, that could be implemented. © 1996 Blackwell science.

关键词： DUSOI Educational intervention Inter-rater reliability Record review Risk adjustment Severity of illness