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16 pages, 577 KiB

Open AccessArticle

Improved Quantum Particle Swarm Optimization of Optimal Diet for Diabetic Patients

by Abdellah Ahourag, Zakaria Bouhanch, Karim El Moutaouakil and Abdellah Touhafi

Eng 2024, 5(4), 2544-2559; https://doi.org/10.3390/eng5040133 - 10 Oct 2024

Cited by 1 | Viewed by 1711

The dietary recommendations for individuals with diabetes focus on maintaining a balanced nutritional intake to manage blood sugar levels. This study suggests a nutritional strategy to improve glycemic control based on an analysis of a dietary optimization problem. The goal is to minimize [...] Read more.

The dietary recommendations for individuals with diabetes focus on maintaining a balanced nutritional intake to manage blood sugar levels. This study suggests a nutritional strategy to improve glycemic control based on an analysis of a dietary optimization problem. The goal is to minimize the overall glycemic loads (GLs) of specific foods. Two variations of the particle swarm optimization (PSO) method, as well as random quantum process optimization (GQPSO), are introduced. The findings demonstrate that the quantum and random methods are more effective than the traditional techniques in reducing the glycemic loads of diets and addressing nutritional deficiencies while also aligning nutrient intake with the recommended levels. The resolution of this diet optimization model, executed multiple times with adjustments to the parameters of both methods, enables dynamic exploration and provides a wide range of diverse and effective food choices. Full article

(This article belongs to the Special Issue Artificial Intelligence for Engineering Applications)

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21 pages, 712 KiB

Open AccessArticle

OPT-FRAC-CHN: Optimal Fractional Continuous Hopfield Network

by Karim El Moutaouakil, Zakaria Bouhanch, Abdellah Ahourag, Ahmed Aberqi and Touria Karite

Symmetry 2024, 16(7), 921; https://doi.org/10.3390/sym16070921 - 18 Jul 2024

Cited by 4 | Viewed by 1331

Abstract

The continuous Hopfield network (CHN) is a common recurrent neural network. The CHN tool can be used to solve a number of ranking and optimization problems, where the equilibrium states of the ordinary differential equation (ODE) related to the CHN give the solution [...] Read more.

The continuous Hopfield network (CHN) is a common recurrent neural network. The CHN tool can be used to solve a number of ranking and optimization problems, where the equilibrium states of the ordinary differential equation (ODE) related to the CHN give the solution to any given problem. Because of the non-local characteristic of the “infinite memory” effect, fractional-order (FO) systems have been proved to describe more accurately the behavior of real dynamical systems, compared to the model’s ODE. In this paper, a fractional-order variant of a Hopfield neural network is introduced to solve a Quadratic Knap Sac Problem (QKSP), namely the fractional CHN (FRAC-CHN). Firstly, the system is integrated with the quadratic method for fractional-order equations whose trajectories have shown erratic paths and jumps to other basin attractions. To avoid these drawbacks, a new algorithm for obtaining an equilibrium point for a CHN is introduced in this paper, namely the optimal fractional CHN (OPT-FRAC-CHN). This is a variable time-step method that converges to a good local minima in just a few iterations. Compared with the non-variable time-stepping CHN method, the optimal time-stepping CHN method (OPT-CHN) and the FRAC-CHN method, the OPT-FRAC-CHN method, produce the best local minima for random CHN instances and for the optimal feeding problem. Full article

(This article belongs to the Special Issue Challenges and New Trends in Optimization and Control Theory in the Era of AI: Analysis, Modelling, and Symmetrical Mathematical Methods)

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17 pages, 9979 KiB

Open AccessArticle

A New Upwelling Index for the Moroccan Atlantic Coast for the Period between 1982–2021

by Hanae Belmajdoub, Khalid Minaoui, Anass El Aouni, Karim Hilmi, Rachid Saadane and Abdellah Chehri

Remote Sens. 2023, 15(14), 3459; https://doi.org/10.3390/rs15143459 - 8 Jul 2023

Cited by 9 | Viewed by 2721

Abstract

Being a component of the Eastern Boundary Upwelling (EBU) ecosystem, Morocco’s Atlantic coast presents high biological production throughout the year, with seasonal variations in upwelling dynamics. This characterization reflects the inherent nature of EBU’s ecosystems. In this work, we develop a novel methodology [...] Read more.

Being a component of the Eastern Boundary Upwelling (EBU) ecosystem, Morocco’s Atlantic coast presents high biological production throughout the year, with seasonal variations in upwelling dynamics. This characterization reflects the inherent nature of EBU’s ecosystems. In this work, we develop a novel methodology to compute a new upwelling index based on the analysis of sea surface temperature (SST) images. Our new upwelling index is not only simple to calculate but also efficient. Indeed, it is limited only to the upwelling region, which has allowed the improvement of the quantification and analysis of the seasonal and interannual variability of the upwelling dynamics. The new proposed upwelling index is based on the application of a recent segmentation method that allows for the monitoring of upwelling dynamics using satellite observations. The proposed upwelling index is applied to a 40-year database of weekly SST images covering the period from 1982 to 2021, and the results are used to analyze seasonal and interannual variations of the upwelling in the region. Full article

(This article belongs to the Special Issue Advances in the Ocean Surface Dynamics: Ocean Waves, Wind, and Air-Sea Interaction - in Memory of Professor Shengchang Wen)

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1 pages, 13 KiB

Open AccessShort Note

(4-Isopropenyl-cyclohex-1-enyl)acetic Acid Ethylester

by Soufiane El Houssame, Larbi El Firdoussi and Abdellah Karim

Molecules 2001, 6(12), M268; https://doi.org/10.3390/M268 - 20 Dec 2001

Viewed by 4546

Abstract

The carbonylation of allylic componds catalyzed by transition metal complexes under atmospheric pressure of CO is one of the most attractive tools to synthesize the b ,g - unsaturated carbonyl compounds, which are versatile building blocks [1-2].[...] Full article

(This article belongs to the Section Molbank Section of Molecules, 1997-2001)

2 pages, 140 KiB

Open AccessShort Note

3-(4’-Methyl-3’-oxocyclohex-1’-enyl)butyric Acid Methyl Ester

by Soufiane El Houssame, Larbi El Firdoussi and Abdellah Karim

Molecules 2001, 6(12), M267; https://doi.org/10.3390/M267 - 20 Dec 2001

Viewed by 4193

Abstract

The alkoxycarbonylation of terpenic olefins which affords the corresponding esters is an elegant synthesis [1-2].[...] Full article

(This article belongs to the Section Molbank Section of Molecules, 1997-2001)

1 pages, 118 KiB

Open AccessShort Note

Trans Acetic Acid 5-isopropyl-2-methyl Cyclohex-2-enyl Ester (Trans Carvyl Acetate)

by Badia Ait Allal, Larbi El Firdoussi, Smail Allaoud and Abdellah Karim

Molecules 2001, 6(12), M240; https://doi.org/10.3390/M240 - 25 May 2001

Viewed by 4380

Abstract

To a red solution of Li₂PdCl₄, prepared in situ by mixing LiCl (30.8 mg, 0.72 mmol) and PdCl₂ (43 mg, 0.24 mmol) in 20 mL of AcOH stirred at 85°C, was added Cu(OAc)₂ (4 g, 20 mmol) and stirred for 30 mn.[...] Full article

(This article belongs to the Section Molbank Section of Molecules, 1997-2001)

1 pages, 113 KiB

Open AccessShort Note

4,7,7-Trimethyl-bicyclo [2.2.1]heptan-2-ol

by Badia Ait Allal, Larbi El Firdoussi, Smail Allaoud and Abdellah Karim

Molecules 2001, 6(12), M239; https://doi.org/10.3390/M239 - 25 May 2001

Viewed by 4187

Abstract

A mixture of Pd(acac)2 (41.26 mg, 0.12 mmol) and CuCl2 (168 mg, 1.25 mmol) [1] in 10 mL of 1,2-dimethoxyethan (DME) was stirred for 30 mn at 80°C under oxygen atmosphere, was added a -pinene (425 mg, 3.12 mmol).[...] Full article

(This article belongs to the Section Molbank Section of Molecules, 1997-2001)

1 pages, 85 KiB

Open AccessShort Note

Bis(p-allylhimachalene)dichlorodipalladium

by Larbi El Firdoussi and Abdellah Karim

Molecules 2001, 6(3), M193; https://doi.org/10.3390/M193 - 25 Mar 2001

Cited by 1 | Viewed by 3851

Abstract

The title organometallic compound, potentially important synthetic intermediate, was prepared regio- and stereospecifically from b-himachalene ((4aR)-3,5,5,9-Tetramethyl-2,4a,5,6,7,8-hexahydro-1H-benzocycloheptene), essentiel component of cedrus atlantica oil [1].[...] Full article

(This article belongs to the Section Molbank Section of Molecules, 1997-2001)

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