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4 results on '"Emna Abassi"'

1. A CHARACTERIZATION OF MEIXNER ORTHOGONAL POLYNOMIALS VIA A CERTAIN TRANSFERT OPERATOR

Author

Emna Abassi and Lotfi Khériji

Subjects
orthogonal polynomials, regular form, meixner polynomials, divided-difference operator, transfert operator, hahn property, Mathematics, QA1-939
Abstract

Here we consider a certain transfert operator \(\mathrm{M}_{(c,\omega)}=I_{\mathcal{P}}-c \, \tau_{\omega},\) \(\omega\neq0,\) \({c \in \mathbb{R}-\{0,1\},}\) and we prove the following statement: up to an affine transformation, the only orthogonal sequence that remains orthogonal after application of this transfert operator is the Meixner polynomials of the first kind.

Published
2024
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2. Physical Activity, Sedentary Behavior, and Satisfaction With Life of University Students in Qatar: Changes During Confinement Due to the COVID-19 Pandemic

Author

Souhail Hermassi, Lawrence D. Hayes, Ahmad Salman, Nilihan E. M. Sanal-Hayes, Emna Abassi, Lolwa Al-Kuwari, Nada Aldous, Nemah Musa, Amna Alyafei, El Ghali Bouhafs, and René Schwesig

Subjects
COVID-19, university student, public health, physical inactivity, sedentary behavior, home confinement, Psychology, BF1-990
Abstract

This study explored the effects of home confinement on physical activity (PA) and satisfaction with life (SL) among university students during the COVID-19 pandemic. A total of 531 subjects participated [male: n=203; female: n=328; age: 33.1±5.2years; mass: 72.1±17.5kg; height: 1.67±0.12m; and body mass index (BMI): 25.7±5.06 kg/m2]. Online survey questions considered “before” and “during” confinement. Confinement reduced all PA intensities (ηp2=0.09–0.45, p

Published
2021
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4. Physical Activity, Sedentary Behavior, and Satisfaction With Life of University Students in Qatar: Changes During Confinement Due to the COVID-19 Pandemic

Author

Lolwa Al-Kuwari, Nilihan E. M. Sanal-Hayes, Souhail Hermassi, Nada Aldous, Amna Alyafei, Ahmad Salman, René Schwesig, El Ghali Bouhafs, Emna Abassi, Nemah Musa, and Lawrence D. Hayes

Subjects
university student, Coronavirus disease 2019 (COVID-19), public health, Physical activity, Life satisfaction, COVID-19, Sedentary behavior, Metabolic equivalent, Sitting time, BF1-990, Quality of life, lifestyle and lockdown, sedentary behavior, physical inactivity, Psychology, home confinement, Body mass index, life satisfaction, General Psychology, Demography, Original Research
Abstract

This study explored the effects of home confinement on physical activity (PA) and satisfaction with life (SL) among university students during the COVID-19 pandemic. A total of 531 subjects participated [male:n=203; female:n=328; age: 33.1±5.2years; mass: 72.1±17.5kg; height: 1.67±0.12m; and body mass index (BMI): 25.7±5.06 kg/m2]. Online survey questions considered “before” and “during” confinement. Confinement reduced all PA intensities (ηp2=0.09–0.45,pp2=0.58,pp2=0.45,pp2=0.42,pp2=0.54,pΔd=0.98). In sum, COVID-19 confinement reduced PA, heightened sitting time, and reduced SL in Qatar University students. This investigation could have a significant impact in developing PA guidelines for health maintainance during COVID-19 and successive pandemics in university students.

Published
2021

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