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Now showing items 11841-11850 of 13238
MODEL-BASED DIAGNOSTICS OF SIMULTANEOUS TOOTH CRACKS IN SPUR GEARS
(2017 , Master Thesis)
This study aims at developing a numerical model that could be used to simulate the effect of tooth cracks on the vibration behavior of spur gears. Gears are a key component that is widely used in various rotating equipment ...
فرْضية تعظيم المنافع في الفقه الاقتصادي الإسلامي
(
جامعة قطر
, 2016 , Article)
يهدف البحث إلى دراسة فرْضية تعظيم المنافع في دائرة القيم الإسلامية، وعرض أدلة مشروعيتها، وأثرها في ضوابط المعاملات المالية في الفقه الإسلامي. ويبحث في الفروق بين فرْضية التعظيم وفرْضية الرشد، ومدى واقعية اشتراط التعظيم في ...
Unveiling the effect of shapes and electrolytes on the electrocatalytic ethanol oxidation activity of self-standing Pd nanostructures
(
Elsevier
, 2023 , Article)
Morphologically controlled Pd-based nanocrystals are the most efficient strategies for improving the electrocatalytic ethanol oxidation reaction (EOR) performance; however, their morphological-EOR activity relationship and ...
Behaviour and associated determinants of COVID-19 vaccine acceptance and advocacy: a nationwide survey of pharmacy professionals in Qatar
(
Taylor and Francis Group
, 2023 , Article)
Background: Vaccine hesitancy poses a global challenge and is acknowledged to be a complex, multifactorial phenomenon. Of particular concern is hesitancy among health professionals, as this may also impact their advocacy ...
Wearable Artificial Intelligence for Assessing Physical Activity in High School Children
(
MDPI
, 2023 , Article)
Eighty one percent of adolescents aged 11–17 years are inadequately physically active worldwide. Physical activity (PA) recommendations for high school children have not been studied previously in schools in the Qatar ...
Testosterone treatment and change of categories of the International prostate symptom score (IPSS) in hypogonadal patients: 12 years prospective controlled registry study
(
Taylor and Francis Ltd.
, 2023 , Article)
Functional hypogonadism is a condition characterized by low testosterone concentrations, occurring more commonly in men as they age. The International Prostate Symptom Score (IPSS) is used to categorize the severity of ...
دور برامج التفكير في تعزيز مهارات ريادة الأعمال لدى طلاب جامعة القاهرة
(
Qatar University Young Scientists Center - Qatar University
, 2024 , Conference Paper)
تهدف هذه الدراسة إلى التعرف على دور برامج التفكير في تعزيز مهارات ريادة الأعمال لدى طلاب جامعة القاهرة, واستخدم الباحث المنهج الوصفى التحليلى، والاستبانة كأداة رئيسية لجمع البيانات وتكون مجتمع الدراسة من طلاب جامعة القاهرة ...
Exploring the stability of HEXACO-60 structure and the association of gender, age, and social position with personality traits across 18 countries
(
John Wiley and Sons Inc
, 2022 , Article)
Objectives: The present paper tests the cross-national stability of the HEXACO-60 structure across 18 countries from four continents. Gender and age differences across countries will be examined. Finally, this is the first ...
Optimal Placement of Phasor Measurement Units for Power Systems Using Genetic Algorithm
(2017 , Master Thesis)
Power grids require monitoring to operate with high efficiency while minimizing the chances of having a failure. However, current monitoring scheme which consists of SCADA (Supervisory Control and Data Acquisition), ...
VOLATILITY ESTIMATION IN MISSING AT RANDOM HIGH-FREQUENCY FINANCIAL TIME SERIES
(2023 , Master Thesis)
More than 15 years ago, the capital markets have seen significant development, introducing high-frequency trading and a shift of market towards high-frequency and algorithm trading. It was always believed that high-frequency ...