Eating Habits and Diet Diversity of Saudi Arabia Residents during the COVID-19 locked-down

The COVID-19 pandemic has had a negative impact on overall health and well-being. Therefore, certain preventive measures may affect many lifestyle habits. This study aimed to explore the eating habits, food variety score (FVS), and diet diversity score (DDS) of adults residing in Saudi Arabia during the mandatory stay-at-home advisory for COVID-19. A cross sectional study was targeted adults living in Saudi Arabia during the COVID-19 lockdown (May – June 2020). An electronic self-reported survey was conducted through Research Electronic Data Capture (Redcap) distributed on social media platforms. The Arabic version of the questionnaire was previously evaluated for its reliability and validity. A total of 359 individuals who completed the food frequency questionnaire were included in the study. Diet diversity score (DDS) and food variety score (FVS) was calculated. The study found that the distribution of FVS ranged between 4-27 food items. The distribution of DDS ranged between 3-14 food items. Income, working status, and living status were factors associated with the FVS and/or DDS. The majority of the cohort (>67%) had at least one snack/day and < 3 meals/day. Diet diversity was acceptable among Saudi adults during the COVID-19 lockdown period. Age, sex, having children, marital status, education level, and income were factors associated with diet diversity and eating habits (having breakfast, skipping meals, and number of snacks). © 2023 The Author(s). Published by Enviro Research Publishers.

Coronavirus dynamics, infections and preventive interventions using fractional-calculus analysis

In this research work, we construct an epidemic model to understand COVID-19 transmission vaccination and therapy considerations. The model's equilibria were examined, and the reproduction parameter was calculated via a next-generation matrix method, symbolized by R0. We have shown that the infection-free steady state of our system is locally asymptotically stable for R0 < 1. Also, the local asymptotic stability of the endemic steady state has been established for R0 > 1. We have used a partial rank correlation coefficient method for sensitivity analysis of the threshold parameter R0. The contribution of vaccination to the threshold parameter is explored through graphical results. In addition to this, the uniqueness and existence of the solution to the postulated model of COVID-19 infection is shown. We ran various simulations of the proposed COVID-19 dynamics with varied input parameters to scrutinize the complex dynamics of COVID-19 infection. We illustrated the variation in the dynamical behavior of the system with different values of the input parameters. The key factors of the system are visualized for the public health officials for the control of the infection. © 2023 the Author(s), licensee AIMS Press.

Analysis and numerical solution of fractional order control of COVID-19 using Laplace adomian decomposition method expansion

Rapid transmission of the novel coronavirus and its resulting condition has caught most countries of the world off-guard. This work develops a fractional order model with seven compartments to describe the transmission and effects of control strategies of coronavirus. The Caputo fractional derivative operator of order D ∊ (0,1) is applied to obtain the scheme of fractional differential equations (FDEs) of the model. The stability analysis is carried out and non-negative unique solution within the domain is verified. Laplace–Adomian Decomposition Method is applied to work out an approximate solution of the FDEs. The solution of the FDEs in the form of infinite series is obtained. The obtained results are compared with the differential transform method case, which converges rapidly to its exact value. Numerical simulations are presented to show the reliability and simplicity of the method. © 2021 American Institute of Physics Inc.. All rights reserved.

Revealing covid 19 effects on Malaysian domestic tourism acceptance towards destination competitiveness

Tourism destination competitiveness has been demonstrated as one of the significant components to improve the country's travel industry goal. This paper study the relationship of domestic tourism acceptance towards tourism destination competitiveness. The data was drawn from a sample of 227 respondents, and a simple random sampling method was used. The data were analyzed using the Statistical Package for Social Science (SPSS). The questionnaires are distributed by online survey and face to face method. Results showed that natural resources, cultural heritage, and special events had significant relationships between domestic tourism acceptance and tourism destination competitiveness in Malaysia. As an emerging tourist attraction, several measures should be considered to improve destination competitiveness while maintaining the future development of Malaysia as a tourism destination. © 2020 Abdullah et al.;Licensee Lifescience Global. This is an open access article licensed under the terms of the Creative Commons Attribution Non-Commercial License (http://creativecommons.org/licenses/by-nc/3.0/) which permits unrestricted, non-commercial use, distribution and reproduction in any medium, provided the work is properly cited.