280 research outputs found
An Organized Collaborative Work Using Twitter in Flood Disaster
No full textThe use of Twitter in emergencies in providing vital information has become increasingly popular. Twitter users are able to use its services to work collaboratively regardless of physical distance. This paper is concerned with the use of Twitter in providing enhanced communication channels and assisting people in emergencies such as floods. An example of a case study is included in this paper
Gender and Apology Strategies in Saudi Arabia
No full textAN ABSTRACT OF THE THESIS OF Ali Aljohani, for the Master of Arts degree in Applied linguistics, presented on October 31, 2016, at Southern Illinois University Carbondale TITLE: GENDER AND APOLOGY STRATEGIES IN SAUDI ARABIA MAJOR PROFESSOR: Dr. Janet Fuller. This study investigates apology strategies in Saudi Arabia in relation to gender differences. Five apology strategies created by Olshtain & Cohen (1988) are examined among Saudi men and women: expression of apology, indirect act of apology, acknowledgement of responsibility, offer of repair, and promise of forbearance. The study is based on 44 participants (23 females & 21 males) from Taibah University in Saudi Arabia, with an investigation of a total of 152 responses produced by the subjects. The respondents were shown two scenarios where an offense occurred. They were then asked to indicate what their response would be if they had committed this offense to show the act of apology which would be utilized in each scenario. The results showed there was a significant difference between male and female speakers using two strategies; expression of apology and indirect act of apology. The study found there is no difference in the method of apology but there was a difference in the length and the frequency of apology
Mechanical Footstep power generator
Get PDFMechanical Footstep Power generator
By Author: Mohammed Aljohani
Abstract
Modern technology is focusing on newer and better sources of energy. Among the important areas are power generation methods since electricity has become part of our lives. Various researchers have conducted surveys to find out the feasibility of converting renewable kinetic energy into electricity. Some of the works done in the past emphasized the selection of suitable materials and power generation systems designs that appear complicated and expensive. To ensure there is cost efficiency and energy efficiency better power generation systems need to be embraced.
The footstep power generator is a system that utilizes the energy from people movement and transforms this movement into electricity. The system is efficient in the conversion of kinetic energy to electrical energy through placement of mechanical footstep power generator on the hind of footpaths. This project entails the conversion of the kinetic energy to electrical energy. The control mechanism carries the rack & pinion, D.C generator, battery and inverter control. The generator provides a simple and low-cost electricity production.
The mechanical footstep generator produces 1.56 kW for one down and up cycle without causing pollution which is an added advantage over other systems. Mechanical footstep power generator produces power on small scale therefore; the power generated applies to low power consuming gadgets. For instance, it can be used in lighting and running low power consuming devices.
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sj-docx-1-wso-10.1177_17474930241237120 – Supplemental material for Stroke and high-risk TIA outcomes with reduction of treatment duration when treatment initiated in emergency rooms (SHORTER-study)
No full textSupplemental material, sj-docx-1-wso-10.1177_17474930241237120 for Stroke and high-risk TIA outcomes with reduction of treatment duration when treatment initiated in emergency rooms (SHORTER-study) by Adel Alhazzani, Fahad S Alajlan, Ali M Alkhathaami, Fahmi Mohammed Al-Senani, Taim A Muayqil, Saeed A Alghamdi, Ammar AlKawi, Saeed AlZahrani, Majid Bakheet, Mohammed Aljohani, Nouran Taher, Abdulkarim Almutairi, Mustafa AlQarni, Sadiq Alsalman, Saeed A Alqahtani, Nouf Almansour, Laila Abukhamsin, Amr Mouminah, Nehal Almodarra, Gamal Mohamed, Meshal Almodhy, Eid Albogumi, Mohamad Alzawahmah, Abdulrahman Alreshaid, Naveed Akhtar, Muhammad Shazam Hussain, Gregory W Albers and Ashfaq Shuaib in International Journal of Stroke</p
Effect of the Dynamic Orthotic Garment on Postural Control, and Endurance in Children with Spastic Diplegic Cerebral Palsy: A Randomized Controlled Trial
No full textHatem A Emara,1,2,* Ahmed H Al-Johany,3 Osama A Khaled,1,4 Abdullah M Al-Shenqiti,1 Abdul Rahman H Ali,5 Marwan M Aljohani,1 Eman Sobh6,7,* 1Physical Therapy Department, College of Medical Rehabilitation Sciences, Taibah University, Medina, Saudi Arabia; 2Department of Physical Therapy for Growth and Developmental Disorders in Children and its Surgery, Faculty of Physical Therapy, Cairo University, Cairo, Egypt; 3Medical Rehabilitation Hospital, Ministry of Health, Medina, Saudi Arabia; 4Basic Science Department, Faculty of Physical Therapy, Cairo University, Cairo, Egypt; 5College of Medical Rehabilitation Sciences, Taibah University, Medina, Saudi Arabia; 6Respiratory Therapy Department, College of Medical Rehabilitation Sciences, Taibah University, Medina, Saudi Arabia; 7Chest Diseases Department, Faculty of Medicine for Girls, Al-Azhar University, Cairo, Egypt*These authors contributed equally to this workCorrespondence: Hatem A Emara, Physical Therapy Department, College of Medical Rehabilitation Sciences, Taibah University, P.O 344, Medina, 41411, Saudi Arabia, Tel +966564156262, Fax +966148618888, Email [email protected]: To investigate the effect of dynamic orthotic garments (Thera togs) on foot pressure distribution, postural control, and endurance in children with spastic diplegic CP.Patients and Methods: This is a single-blind randomized controlled clinical trial involving 34 (8– 10 years) with spastic diplegic CP. The control group received conventional physical therapy (CPT), whereas the study group received CPT in addition to wearing TheraTogs. We recorded foot pressure distribution, trunk control measurement scale, trunk position sense, Pediatric Berg Balance Scale (PBS), and six-minute walking distance (6MWD).Results: Both groups showed improvement. The study group had significant improvement in foot pressure distribution (p-value 0.003, 0.001, < 0.001 for forefoot, midfoot, and rearfoot mean pressures respectively, and 0.005, < 0.001, and 0.005 for forefoot, midfoot, and rearfoot peak pressures respectively), Pediatric balance scale, The trunk control measurement scale, and Trunk position sense (p-value < 0.001) and six-minute walking distance (p-value 0.029). Our data suggest that adding TheraTogs to conventional physiotherapy improves foot pressure, postural control, and endurance in children with spastic diplegic cerebral palsy.Conclusion: Both TheraTogs and conventional physical therapy corrected foot pressure distribution, trunk control, improved balance, and increased 6MWD in children with spastic diplegic CP but the improvement was more significant in TheraTogs group.Clinical Trial Registration: NCT05271149.Keywords: children with disability, theratogs, foot pressure, balance score, orthotic device
Minority Languages in Linguistic Landscape: The case of Medina in Saudi Arabia
Get PDFLinguistic landscape (LL) is the linguistic objects that mark the public space (Ben-Rafael, Shohamy, Amara, & Trumper-Hecht,2006). This dissertation examined the LL of Medina, a holy city in Saudi Arabia. The study of linguistic landscape is a site-based research, meaning any study is most likely oriented by the nature of a research site and what important observations are found in that site. Accordingly, the LL study of Medina compelled us to pay attention to the role of religion. In addition, LL study has its inextricable links to multilingualism and language policy establishing it as a marker to a given community and its language status. Therefore, this dissertation is performed to fill the gap of three unexamined concepts of LL in the context of Medina; religion, multilingualism and language policy. A total of 300 signs, accompanied with interviews and recording of soundscape were conducted in three axes; the Prophet Mosque, the Central Zone, and Modern Streets. The data were analyzed quantitatively relied on several types of categorizations; Top-down vs Bottom-up, Language Arrangement, Score-system, and Religious content. The qualitative analysis revealed three themes relevant to understanding the construction of the LL of Medina; religion, language policy, minority languages, and globalization. The investigation yielded valuable insights into the language ecology of the city and the ways in which everyday citizens and visitors to the city experienced the multilingual environment. The findings indicated that religion, to a large extent, contributes in shaping the public sphere of Medina in different applications such as to show the citys identity, and to introduce its holiness. In commercial signs, religious elements were commodified to appeal to customers, as well as to construct tokenism around a product. The study also found that in some parts of Medina multilingualism is a normal and everyday part of public life. Primarily, because of the religious importance of the Prophet Mosque that is a focal point of the city, and prime destination for religious pilgrims and visitors. The varied methods and analysis in this study led to a complex picture of the LL, and subsequently, understanding of the language policy of Medina. While Arabic is the dominant language in the city, multiple languages are also used in official and nonofficial signs, suggesting that there is permissible use of different languages, and that government was aware of the need to disseminate messages and religious education to international visitors
Prevalence and Associated Factors of Vitamin D Deficiency in High Altitude Region in Saudi Arabia: Three-Year Retrospective Study
No full textMostafa Abdelsalam,1,2 Eman Nagy,2 Mohamed Abdalbary,2 Mona Abdellatif Alsayed,1,3 Amr Abouzed Salama Ali,4 Reham Metwally Ahmed,1 Abdulbadie Saleh M Alsuliamany,1 Ali H Alyami,5– 7 Raad MM Althaqafi,8 Raghad M Alsaqqa,9 Safaa Ibrahim Ali,10 Bakar Aljohani,11 Ahmed Abdullah Alghamdi,12 Faisal A Alghamdi,9 Adnan A Alsulaimani1 1Internal Medicine Department, Alameen General Hospital, Taif, Saudi Arabia; 2Mansoura Nephrology and Dialysis Unit, Internal Medicine Department, Faculty of Medicine, Mansoura University, Mansoura, Egypt; 3Department of Pediatrics, Faculty of Medicine, Mansoura University, Mansoura, Egypt; 4Mansoura Medical District, Family Medicine Hospitals, Ministry of Health, Mansoura, Egypt; 5Department of Surgery, Ministry of the National Guard – Health Affairs, Jeddah, Saudi Arabia; 6Department of Surgery, Abdullah International Medical Research Center, Jeddah, Saudi Arabia; 7Department of Orthopedics, King Saud Bin Abdulaziz University for Health Sciences, Jeddah, Saudi Arabia; 8Orthopedic Surgery Department, King Abdulaziz Specialist Hospital, Taif, Saudi Arabia; 9College of Medicine, Taif University, Taif, Saudi Arabia; 10General Medicine Faculty, Sechenov University, Moscow City, Russian Federation; 11Neuroradiology, AlHada Military Hospital, Taif, Saudi Arabia; 12College of Medicine, Al-Baha University, Al Baha, Saudi ArabiaCorrespondence: Eman Nagy, Mansoura Nephrology and Dialysis Unit, Internal Medicine Department, Faculty of Medicine, Mansoura University, Mansoura, Egypt, Email [email protected]: Vitamin D has many functions in the human body, and its deficiency is associated with skeletal and non-skeletal diseases. Vitamin D deficiency (blood level of 25 (OH) vitamin D < 20 ng/mL) has been reported worldwide, including Kingdom of Saudi Arabia (KSA). Its prevalence and associated factors vary according to KSA. Therefore, this study aimed to explore the prevalence and risk factors of vitamin D deficiency in the Taif region of KSA.Methods: This retrospective study included patients who attended outpatient clinics at the Alameen General Hospital from 2019 to 2021. Demographic, clinical, and laboratory data were collected using a hospital software system.Results: The study included 2153 patients and vitamin D deficiency was diagnosed in 900 (41.8%) of whom were diagnosed with vitamin D deficiency. It was more common in males (P=0.021), younger age (< 0.001), and in patients without comorbidities. There was a positive correlation between 25 (OH) vitamin D levels and blood cholesterol, high-density lipoprotein, calcium, and vitamin B12 levels. In the binary logistic regression analysis, age was the most significant predictor (P< 0.001), followed by the absence of thyroid disease (P=0.012) and asthma (P=0.030).Conclusion: Vitamin D deficiency is common in the Saudi population despite sunny weather in KSA. It is more prevalent among males, younger individuals, and those without comorbidities such as thyroid diseases and asthma.Keywords: vitamin D, prevalence, risk factors, KSA, calciu
Ranking authors in academic social networks: a survey
No full text
Purpose
This study reviews the methods found in the literature for the ranking of authors, identifies the pros and cons of these methods, discusses and compares these methods. The purpose of this paper is to study is to find the challenges and future directions of ranking of academic objects, especially authors, for future researchers.
Design/methodology/approach
This study reviews the methods found in the literature for the ranking of authors, classifies them into subcategories by studying and analyzing their way of achieving the objectives, discusses and compares them. The data sets used in the literature and the evaluation measures applicable in the domain are also presented.
Findings
The survey identifies the challenges involved in the field of ranking of authors and future directions.
Originality/value
To the best of the knowledge, this is the first survey that studies the author ranking problem in detail and classifies them according to their key functionalities, features and way of achieving the objective according to the requirement of the problem.
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Efficacy of neutral and negatively charged liposome-loaded gentamicin on planktonic bacteria and biofilm communities
No full textMoayad Alhariri,1 Majed A Majrashi,2 Ali H Bahkali,3 Faisal S Almajed,4 Ali O Azghani,5 Mohammad A Khiyami,2 Essam J Alyamani,2 Sameera M Aljohani,6 Majed A Halwani1 1Nanomedicine Department, King Abdullah International Medical Research Center (KAIMRC), King Saud bin Abdulaziz University for Health Sciences, 2National Centre for Biotechnology, Life Sciences and Environment Research Institute, King Abdulaziz City for Science and Technology (KACST), 3Botany and Microbiology Department, College of Science, King Saud University, 4Department of Clinical Laboratory Sciences, College of Applied Medical Sciences, King Saud bin Abdulaziz University for Health Sciences, King Abdullah International Medical Research Center, Riyadh, Saudi Arabia; 5Department of Biology, The University of Texas at Tyler, Tyler, TX, USA; 6College of Science and Health Professions, King Saud bin Abdulaziz University for Health Sciences, King Abdullah International Medical Research Center, Riyadh, Saudi Arabia Abstract: We investigated the efficacy of liposomal gentamicin formulations of different surface charges against Pseudomonas aeruginosa and Klebsiella oxytoca. The liposomal gentamicin formulations were prepared by the dehydration–rehydration method, and their sizes and zeta potential were measured. Gentamicin encapsulation efficiency inside the liposomal formulations was determined by microbiologic assay, and stability of the formulations in biologic fluid was evaluated for a period of 48 h. The minimum inhibitory concentration and the minimum bactericidal concentration were determined, and the in vitro time kill studies of the free form of gentamicin and liposomal gentamicin formulations were performed. The activities of liposomal gentamicin in preventing and reducing biofilm-forming P. aeruginosa and K. oxytoca were compared to those of free antibiotic. The sizes of the liposomal formulations ranged from 625 to 806.6 nm in diameter, with the zeta potential ranging from –0.22 to –31.7 mV. Gentamicin encapsulation efficiency inside the liposomal formulation ranged from 1.8% to 43.6%. The liposomes retained >60% of their gentamicin content during the 48 h time period. The minimum inhibitory concentration of neutral formulation was lower than that of free gentamicin (0.25 versus 1 mg/L for P. aeruginosa and 0.5 versus 1 mg/L for K. oxytoca). The negatively charged formulation exhibited the same bacteriostatic concentration as that of free gentamicin. The minimum bactericidal concentration of neutral liposomes on planktonic bacterial culture was twofold lower than that of free gentamicin, whereas the negatively charged formulations were comparable to free gentamicin. The killing time curve values for the neutral negatively charged formulation against planktonic P. aeruginosa and K. oxytoca were better than those of free gentamicin. Furthermore, liposomal formulations prevent the biofilm-formation ability of these strains better than free gentamicin. In summary, liposomal formulations could be an effective lipid nanoparticle to combat acute infections where planktonic bacteria are predominant. Keywords: drug delivery, stability, antibacterial activity, biofil
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