Age- and Gender-Specific Reference Intervals for Fasting Blood Glucose and Lipid Levels in School Children Measured With Abbott Architect c8000 Chemistry Analyzer     

Waleed Tamimi  Esam Albanyan  Yasmin Altwaijri  Hani Tamim  Fahad Alhussein 《Indian journal of clinical biochemistry : IJCB》2012,27(2):141-146

Reference intervals for pubertal characteristics are influenced by genetic, geographic, dietary and socioeconomic factors. Therefore, the aim of this study was to establish age-specific reference intervals of glucose and lipid levels among local school children. This was cross-sectional study, conducted among Saudi school children. Fasting blood samples were collected from 2149 children, 1138 (53%) boys and 1011 (47%) girls, aged 6 to 18 years old. Samples were analyzed on the Architect c8000 Chemistry System (Abbott Diagnostics, USA) for glucose, cholesterol, triglycerides, HDL and LDL. Reference intervals were established by nonparametric methods between the 2.5th and 97.5th percentiles. Significant differences were observed between boys and girls for cholesterol and triglycerides levels in all age groups (P < 0.02). Only at age 6–7 years and at adolescents, HDL and LDL levels were found to be significant (P < 0.001). No significant differences were seen in glucose levels except at age 12 to 13 years. Saudi children have comparable serum cholesterol levels than their Western counterparts. This may reflect changing dietary habits and increasing affluence in Saudi Arabia. Increased lipid screening is anticipated, and these reference intervals will aid in the early assessment of cardiovascular and diabetes risk in Saudi pediatric populations.  相似文献   

Improvement in Student Performance and Perceptions through a Flipped Anatomy Classroom: Shifting from Passive Traditional to Active Blended Learning     

Abir El Sadik  Waleed Al Abdulmonem 《Anatomical sciences education》2021,14(4):482-490

One of the major challenges facing anatomy educators is delivering the anatomy materials in fewer hours with a reduction of anatomy courses in the integrated curricula. The flipped classroom modality may be an innovative solution. However, its effectiveness remains under debate due to a lack of outcome-based research and the mixed results of students' performance. The present study aimed to determine the outcome of the flipped classroom based upon the level of student cognition. The study investigated performance on 17 multiple-choice anatomy questions as a part of the final examination of the musculoskeletal system module. The results were compared between the first-year female students of Qassim Medical College, specifically the flipped classroom group (46 students) of the academic year (2018–2019) and the traditional group (49 students) of the academic year (2017–2018). The mean differences in the students' grades on the anatomy questions at the level of knowledge, application, and analysis using Cohen's d test were 0.43, 1.41, and 1.01, respectively. These results suggest the positive impact of flipping the students' classrooms on improving their levels of thinking according to Bloom's taxonomy. Perception surveys also revealed students' enthusiasm for the pre-class activities, leading to a better performance in the class with more engagement with their peers and teachers. The present study suggested that the flipped classroom modality can be performed to compensate for the reduction of anatomy educational hours. However, further studies are recommended to investigate the best practices of the flipped classroom that fit with the students' needs and workloads.  相似文献   

Utilization of discrete transforms to conquer the problems of multi-tone systems     

Samir Abd Elghafar  Salaheldin M. Diab  Bassiouny M. Sallam  Emad S. Hassan  Mona Shokair  Waleed Al-Nauimy  Moawad I. Dessouky  El-Sayed M. El-Rabaie  Saleh Alshebeili  Fathi E. Abd El-Samie 《Journal of The Franklin Institute》2014

This paper presents a new implementation of discrete multi-tone (DMT) systems based on different discrete transforms that include the discrete sine transform (DST), discrete cosine transform (DCT), and discrete wavelet transform (DWT). The implementation also considers time-domain equalization to mitigate channel distortion. Compared to the fast Fourier transform discrete multi-tone (FFT-DMT) system, the proposed implementations have an advantage in that their energy-compaction property helps in reducing the channel effects. The performance of the DST-DMT, DCT-DMT, DWT-DMT, and FFT-DMT systems, employing a time-domain equalizer (TEQ), is investigated in the paper. It has been demonstrated by computer simulations that the proposed implementations outperform the FFT-DMT system and that the utilization of the TEQ can lead to higher bit rates  相似文献   

Research Output from Palestine (1995–2012): A Bibliometric Study     

Waleed M. Sweileh  Sa’ed H. Zyoud  Samah W. Al-Jabi  Ansam F. Sawalha  Suleiman Al Khalil 《International Information and Library Review》2013,45(3-4):99-112

Palestine is a small newly established state in the Middle East. The objective of this study was to assess the quantity and quality of research output from Palestine after Oslo peace accords. The data used for this study were retrieved from Scopus database (officially known as Sciverse Scopus). Bibliometric analysis was used to identify the pattern of publication, relative growth rate, authorship pattern, collaborative measures, author's productivity, most prolific authors, and most prolific journals. A total of 3,585 published documents were retrieved from Palestine. A steady increase was observed after 2001. The h-index of the retrieved documents was 57. Fifty-three (1.48%) documents were published in Eastern Mediterranean Health Journal, whereas 52 (1.45%) and 49 (1.37%) documents were published in Journal of Dispersion Science and Technology and Asian Journal of Chemistry, respectively. Half of the top 20 journals in which Palestinian researchers had published their articles were un-indexed in Institute for Scientific Information (ISI) web of knowledge. The highest number of documents published by a Palestinian researcher was 79. The main subject area of published documents from Palestine was medicine (717; 20.00%), followed by chemistry (551, 15.37%), and engineering (530, 14.78%). The top countries involved in research collaboration with Palestine were the United States (422, 11.70%), followed by Germany (381; 10.71%), and the United Kingdom (208; 5.83%). There was a significant correlation between number of collaborating countries with Palestine in one hand, and quantity and quality of research activity in Palestine on the other hand. The number of collaborating countries with Palestine increased almost ten-fold from 1995 to 2012. Research output from Palestine showed steady growth since the Oslo peace accords. Research output was high from certain scientific disciplines while was lagging from others. Future emphasis on joint research, international collaboration, and publishing in indexed journals is needed.  相似文献   

Acceptance of mobile technologies and M-learning by university students: An empirical investigation in higher education     

Al-Rahmi  Ali Mugahed  Al-Rahmi  Waleed Mugahed  Alturki  Uthman  Aldraiweesh  Ahmed  Almutairy  Sultan  Al-Adwan  Ahmad Samed 《Education and Information Technologies》2022,27(6):7805-7826

Education and Information Technologies - Mobile-learning (M-learning) apps have grown in popularity and demand in recent years and have become a typical occurrence in modern educational systems,...  相似文献   

Novel extension of the UTAUT model to understand continued usage intention of learning management systems: the role of learning tradition     

Al-Adwan  Ahmad Samed  Yaseen  Husam  Alsoud  Anas  Abousweilem  Fayrouz  Al-Rahmi  Waleed Mugahed 《Education and Information Technologies》2022,27(3):3567-3593

Education and Information Technologies - The key objective of this study was to reveal the key factors that impact university students’ continued usage intentions with respect to Learning...  相似文献