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This study delves into an in-depth examination of the biomechanical characteristics of various materials commonly utilized in the fabrication of artificial ankle joints. Specifically, this research focuses on the design of an ankle joint resembling the salto-talaris type, aiming to comprehensively understand its performance under different loading conditions. Employing advanced finite element analysis techniques, this investigation rigorously evaluates the stresses and displacements experienced by the designed ankle joint when subjected to varying loads. Furthermore, this study endeavors to identify the vibrating frequencies associated with these displacements, offering valuable insights into the dynamic behavior of the ankle joint. Notably, the analysis extends to studying random frequencies across three axes of motion, enabling a comprehensive assessment of directional deformities that may arise during joint function. To validate the effectiveness of the proposed design, a comparative analysis is conducted against the star ankle design, a widely recognized benchmark in ankle joint prosthetics. This comparative approach serves dual purposes: confirming the accuracy of the findings derived from the salto-talaris design and elucidating the relative efficacy of the proposed design in practical application scenarios.

Abstract The rapid growth of videoconferencing technology in e-learning has gained significant attention in recent years. However, the literature lacks focus on the quality aspects contributing to the success of videoconferencing platforms in online learning. To fill this gap, this study used the DeLone and McLean information system success model to assess how three quality aspects (system, information, and service) of Microsoft Teams videoconferencing platform influenced students’ learning outcomes in online learning. The study involved surveying 261 students and found that all three quality dimensions significantly impacted students’ usage and satisfaction with Microsoft Teams. Remarkably, information quality had the most pronounced influence, and system use also positively affected student satisfaction, whereas student satisfaction played more significant role in their perceived benefits compared to system use. The study concluded that Microsoft Teams’ three quality dimensions contribute to enhancing student-perceived benefits in e-learning environment, confirming its success as an e-learning platform for students.

يعد القلب من أهم الاعضاء الحيوية عند الإنسان وأي خلل في وظيفته فإنه ينعكس على الصحة العامة للمريض لذلك تمت دراسة القلب وأمراضه في العديد من الأبحاث من أجل مساعدة الطبيب في تشخيصه للأمراض القلبية وتقليل الأخطاء قدر الإمكان. يهدف هذا البحث الى تقديم طريقة لتشخيص أمراض القلب بالاعتماد على اشارات مخطط كهربائية القلبECG ، حيث تم في البداية إزالة الضجيج من الإشارة واستخلاص السمات المورفولوجية والديناميكية لإشارة ECG عن طريق خوارزمية استخلاص سمات مناسبة و تحويل (Wavelet) للمويجات، ومن ثم تم استخدام مصنف SVM لتحديد الاشارات السليمة من الاشارات المرضية يتبع ذلك تدريب شبكة عصبونية من أجل تصنيف الاشارات المرضية واستخلاص النتائج. وقد أظهر النموذج دقة تعرف على الاصناف المريضة من الاصناف السليمة بلغت 97 % من أصل 150 عينة . كما استطاع النموذج التعرف على 96 % من عدد العينات المرضية وذلك بنسبها الى 3 اصناف هي (احتشاء العضلة القلبية واللانظيمات واصناف اخرى).

The paper deals with Kamila Shamsie’s novel Home Fire to explore the profound social and psychological aspects and identity conflicts Muslim immigrants face in the West, especially in Britain. The importance of this paper is to express the conflict that the Muslim expatriate experiences in his relationship with the West and explore the reasons that affect their tolerance and coexistence. The paper’s problem manifests in exploring significant facets of human interactions, including tolerance, the increasing migrations from Islamic nations to non-Muslim countries, and the challenges arising from identity, religion, and race, which expose migrants to significant perils. The Method uses a social theoretical framework that intersects with the psychological approach. It investigates how both the original and new environments affect character development and individuals' psychological, developmental, and cognitive dimensions in the Muslim Diaspora. It aims to understand the reasons behind involvement in terrorist organizations and also examines the citizenship rights of Muslim Diaspora members. Finally, the paper concludes by presenting the most prominent results, which collectively illustrate that the aggressive style of fiction has influenced the presence of paranoia in literary criticism, leading to an exaggeration of the crimes of others and justification of the self. This is not conducive to objective and neutral analysis, so adopting a more moderate and neutral approach is recommended to allow for open discussion and acceptance of differing viewpoints. This approach should address questions of identity and national belonging.

The research investigates the link between technology, organization, and environment, and the uptake of artificial intelligence among SMEs in Jordan. The objective is to get a deeper understanding of the factors that promote or hinder enterprises' use of artificial intelligence during the recruitment of leaders. A total of 295 participants, who were owners or managers in several SME sectors, manufacturing, including services, construction, and agriculture, were selected via judgmental sampling. Data collection was conducted utilizing a survey instrument, and the collected data was processed employing Smart PLS. The findings demonstrated a substantial correlation between attitude toward artificial intelligence uptake and factors such as relative advantage, complexity, top management commitment, and organizational preparedness. Nevertheless, factors like competitive pressure, external assistance, a favorable regulatory environment, compatibility, and staff flexibility do not significantly influence the attitude toward the uptake of artificial intelligence. In summary, these findings provide valuable insights for decision-making and resource distribution. They underscore the significance of factors such as relative advantage, complexity, top management commitment, and organizational readiness in achieving goals in the field of artificial intelligence. Additionally, they identify areas where efforts may not result in significant effects. The practical ramifications and future study paths are emphasized according to current technological needs.

The purpose of the current study is to investigate how the views of domestic tourists affect their propensity to adopt platforms and tools for digital marketing. On the basis of the perceived organisational E-readiness and the revised information systems success model, regression analyses were employed to evaluate the assumptions based on 375 selfadministered questionnaire surveys done with tourist businesses. The selection of questionnaires was based on a convenience strategy and a stratified proportional sampling method. The results of the research indicate that user satisfaction, system quality, IT infrastructure, information quality, service quality, and top-level management support are substantially associated with the use of digital marketing platforms and tools. The results of this study have practical and policy implications for legislators, marketers, and managers as they design successful and efficient digital marketing strategies to satisfy the requirements and expectations of tourist businesses.

Using electrolysis systems to degrade organics in wastewater encourages this technique to remove micropollutants (MPs) in different types of water. In this work, a cell consisting of an anode as a boron-doped diamond (BDD) electrode combined with a gas diffusion (GDE) cathode without a separator showed that MPs degradation can be effectively achieved. Investigating different operating parameters, it was stated that applying a low current density (2 mA/cm2) and setting the Reynolds number of the electrolyte flow through the cell at the laminar range raised the treatment time by 3-fold at the same energy demand. This arrangement increased the MPs removal. Some substances like diclofenac were removed up to 84% at a longer treatment time of 180 min coupled with an increase in energy demand. The results at the mentioned parameters indicated an adequate generation rate of radicals needed to remove MPs and the oxidation reactions were promoted. The results show high potential to the investigated electrolysis system in removing MPs in wastewater under considering the need for further reduction of the energy demand. HIGHLIGHTS Investigaton of innovative electrolysis system to remove water micropollutants.; Explanation and controlling the system reactions towards the highest yield.; Confirmation of removal possibility at different operating parameters.; Studying how the operating parameters affect the treatment process effectivity.; Determination of the best system settings to get the best removal efficiency.;

Food allergy (FA) is an inappropriate immune response against dietary antigens. Various environmental factors during perinatal life may alter the establishment of intestinal homeostasis, thereby predisposing individuals to the development of such immune-related diseases. Among these factors, recent studies have emphasized the chronic dietary exposure of the mother to foodborne inorganic nanoparticles (NP) such as nano-sized silicon dioxide (SiO2), titanium dioxide (TiO2) or silver (Ag). Indeed, there is growing evidence that these inorganic agents, used as food additives in various products, as processing aids during food manufacturing or in food contact materials, can cross the placental barrier and reach the developing fetus. Excretion in milk is also suggested, hence continuing to expose the neonate during a critical window of susceptibility. Due to their immunotoxical and biocidal properties, such exposure may disrupt the host-intestinal microbiota's beneficial exchanges and may interfere with intestinal barrier and gut-associated immune system development in fetuses then the neonates. The resulting dysregulated intestinal homeostasis in the infant may significantly impede the induction of oral tolerance, a crucial process of immune unresponsiveness to food antigens. The current review focuses on the possible impacts of perinatal exposure to foodborne NP during pregnancy and early life on the susceptibility to developing FA.

Microbial fuel cells are a promising technology for future wastewater treatment, as it allows cleaning and power generation simultaneously. The bottleneck of microbial fuel cells is often its cathodes because they determine the power output. Gas diffusion electrodes might overcome this bottleneck due to their low production costs and high oxygen reduction rates. However, biofilm formation on the gas diffusion electrodes reduces their performance over time. In this work, a new reactor design of the microbial fuel cell using rotating gas diffusion electrodes is presented. The biofilm growth on the electrode during operation was observed and its effect on the performance of the microbial fuel cell was examined. In addition, different antifouling strategies were investigated over a period of 80 days. It was found that already after 7 days of operation a complete biofilm had grown on an untreated gas diffusion electrode. However, this does not seem to affect the performance of the cells in the beginning. Differences in the performance of the reactors with and without an antifouling strategy only become apparent from day 15 onwards. The use of UV radiation and antibacterial membranes leads to the best results with maximum power densities of approx. 200 mW m−2 while the untreated microbial fuel cell only achieves a maximum power density of approx. 20 mW m−2.

A system of boron-doped diamond (BDD) anode combined with a gas diffusion electrode (GDE) as a cathode is an attractive kind of electrolysis system to treat wastewater to remove organic pollutants. Depending on the operating parameters and water matrix, the kinetics of the electrochemical reaction must be defined to calculate the reaction rate constant, which enables designing the treatment reactor in a continuous process. In this work, synthetic wastewater simulating the vacuum toilet sewage on trains was treated via a BDD-GDE reactor, where the kinetics was presented as the abatement of chemical oxygen demand (COD) over time. By investigating three different initial COD concentrations (C0,1 ≈ 2 × C0,2 ≈ 4 × C0,3), the kinetics was presented and the observed reaction rate constant kobs. was derived at different current densities (20, 50, 100 mA/cm2). Accordingly, a mathematical model has derived kobs. as a function of the cell potential Ecell. Ranging from 1 × 10−5 to 7.4 × 10−5 s−1, the kobs. is readily calculated when Ecell varies in a range of 2.5–21 V. Furthermore, it was experimentally stated that the highest economic removal of COD was achieved at 20 mA/cm2 demanding the lowest specific charge (~7 Ah/gCOD) and acquiring the highest current efficiency (up to ~48%).

We introduce the Laplacian sum-eccentricity matrix LSe of a graph G, and its Laplacian sum-eccentricity energy LSeE=∑ni=1|ηi|, where ηi=ξi-(2m/n) and where ξ1,ξ2,...,ξn are the eigenvalues of LSe. Upper bounds for LSeE are obtained. A graph is said to be twinenergetic if ∑ni=1|ηi|=∑ni=1|ξi|. Conditions for the existence of such graphs are established.

BACKGROUND: Assessment of growth using Z-score methods is important for clinical care and research, yet growth reference Z-score data for preschool Saudi children are not available. OBJECTIVE: Establish Z-score tables and corresponding growth charts. DESIGN: Uses data from a national survey in 2004–2005. SETTING: Community-based random sample of preschool Saudi children. SUBJECTS AND METHODS: Raw data from the previous nationally representative sample were analyzed using the L, M, and S statistical methods to calculate Z-scores of growth. MAIN OUTCOME MEASURE(S): Z-scores reference values for weight, length/height, head circumference, weight for length/height, and body mass index for age for boys and girls from birth to 60 months of age. RESULTS: For 15 601 Saudi children (7896, 50.6 % boys) Z-score tables and graphs from birth to 60 months of age were derived for boys and girls. The tables and graphs include weight for age, length/height for age, head circumference for age, weight for length/height, and BMI for age. CONCLUSION: Z-score reference data on the growth of preschool Saudi infants and children is essential for healthcare and research. LIMITATION: Does not include regional variations.

BACKGROUND: Previous growth charts for Saudi children have not included detailed tables and parameters needed for research and incorporation in electronic records. OBJECTIVES: The objective of this report is to publish the L, M, and S parameters and percentiles as well as the corresponding growth charts for Saudi preschool children. DESIGN: Community-based survey and measurement of growth parameters in a sample selected by a multistage probability procedure. SETTING: A stratified listing of the Saudi population. SUBJECTS AND METHODS: Raw data from the previous nationally-representative sample were reanalyzed using the Lambda-Mu-Sigma (LMS) methodology to calculate the L, M, and S parameters of percentiles (from 3rd to 97th) for weight, length/height, head circumference, and body mass index-for-age, and weight-for-length/height for boys and girls from birth to 60 months. MAIN OUTCOME MEASURES: Length or height and weight of Saudi preschool children. RESULTS: There were 15601 Saudi children younger than 60 months of age, 7896 (50.6 %) were boys. The LMS parameters for weight for age from birth to 60 months (5 years) are reported for the 3rd, 5th, 10th, 25th, 50th, 75th, 90th, 95th, and 97th percentiles as well as the corresponding graphs. Similarly, the LMS parameters for length/height-for-age, head circumference-for-age, weight-for-length/height and body mass index-for-age (BMI) are shown with the corresponding graphs for boys and girls. CONCLUSION: Using the data in this report, clinicians and researchers can assess the growth of Saudi preschool children. LIMITATIONS: The report does not reflect interregional variations in growth.

BACKGROUND AND OBJECTIVES: Limited data are available on the prevalence of congenital anomalies based on a community survey in Middle East countries. The prevalence of congenital anomalies is expected to be high in these countries because of the high consanguinity rate and high maternal age. The aim of this cross-sectional study was to establish the prevalence of congenital anomalies in Saudi Arab children. DESIGN AND SETTINGS: This is a prospective, cross-sectional, community-based study conducted over 2 years among the Saudi population. SUBJECTS AND METHODS: The study sample was determined by a multi-stage probability random sampling of household representatives of the Saudi Arab population. The health status of children was obtained during household visits by primary care physicians who performed a history and physical examination of all children and adolescents younger than 19 years. All cases of congenital anomalies were recorded. RESULTS: During the 2-year study period (2004–2005), a total of 45 682 children were screened. The commonest congenital anomalies found in this survey were Down syndrome, congenital deafness, and congenital blindness with prevalence rates of 6.6 per 10 000, 4.8 per 10 000, and 1.3 per 10 000 children, respectively. The prevalence of cleft lip with or without cleft palate was 0.9 per 10 000 children, achondroplasia was 0.7 per 10 000, and Dandy-Walker syndrome was 0.4 per 10 000. Crouzon syndrome, Treacher-Collins syndrome, Angelman syndrome, and Turner syndrome had equal prevalence of 0.2 per 10 000 children. CONCLUSION: The data suggest a significant decline in the prevalence of Down syndrome; however, the prevalence of other anomalies like congenital deafness is still high.

BACKGROUND: Despite the extensive reporting of pediatric ulcerative colitis (UC) from industrialized developed countries, reports from developing countries are limited to small-case series from single centers. The objective of our large multicenter study was to determine the clinical, laboratory, endoscopic characteristics of UC in children from a developing country, Saudi Arabia. DESIGN AND SETTINGS: A retrospective study of children diagnosed with UC under the age of 18 years during the period from 2003 to 2012. METHODS: Patients enrolled from 15 medical centers from different regions in Saudi Arabia. A unified database collection form specifically designed for this study was completed by all participating centers. RESULTS: A total of 188 children were diagnosed with UC during the study period (97 males [51.6%] and 91 females [48.4%]). The mean age at diagnosis was 9.1 years, and the mean duration of symptoms before diagnosis was 8.7 months. Consanguinity was present in 57 cases (32.6%), and the family history of inflammatory bowel disease (IBD) was noted in 16 cases (9%). The most common clinical presentation was blood in stool (90%), followed by diarrhea (86%) and abdominal pain (62%). Laboratory investigations revealed elevated erythrocyte sedimentation rate (82%), anemia (75%), thrombocytosis (72%), and hypoalbuminemia (33%). The extent of the disease was pan colonic in 46.1%, and confined to left side of colon and rectum in 23% and 9.6% of the cases, respectively. CONCLUSION: This demographically pediatric IBD retrospective study revealed age-related variation in the distribution of IBD. Clinical presentation, with a high prevalence of positive consanguinity and positive family history, was noted in young patients with UC. The data from this study indicate that UC is increasingly recognized in Saudi Arabia and show many similarities to data from North America and Europe.

Background: Atopic dermatitis is an inflammatory skin disorder. Although it is not a life threatening condition, it may become infected with microorganisms, especially in children. Objectives: The aim of this study was to determine bacterial colonisation in children with atopic dermatitis. Methods: A total of 80 children were randomly included in this study. Two swabs were taken from each child, one from the eczematous skin lesion and the other from apparently healthy skin, as a control. Bacteria were isolated and identified on the basis of the colonial morphology, gram staining and the Vitek System. Results: The mean age of children in this study was 1.4 years, with no gender difference (p=0.98) (n=80). A total of 240 bacterial colonies were grown from atopic dermatitis lesions in contrast to 193 colonies from non–lesional skin. Gram–positive cocci were found in 78 (97.5%) lesions and in 77 (96.2%) non–lesional skin. Staphylococci species were significantly detected in the lesions than in the non–lesional skin. Ent. Faecalis, Ent. Faecium, Ent. gallinarium and C. minutissium were significantly isolated from lesions as compared to non–lesional skin, whereas C. xerosis was insignificantly found to be more in the lesions (p=0.21). Gram–negative bacteria were isolated from 7(8.8%) lesions, but none were isolated from non–lesional skin. Recovered species were Pantoea agglomerans, Enterobacter cloacae, Chryseobacterium indologenes and Acinetobacter Iwoffii. Conclusion: Atopic dermatitis in children is complicated with streptococcal and gram–negative bacterial colonisations and the latter was correlated with the severity of the lesions. Enterococci and Corynebacterium species were significant residents. S. aureus remained the chief inhabitant. No causal relationship could be established between the skin microbiota and atopic dermatitis.

The study aimed at analyzing the educational bulletin presented to the teachers of the basic stage and the Jordanian Ministry of Education and the future model extracted from it. The study addressed bulletins issued before 2018. A classification of nine key areas was used in the analysis of the content. Results showed that the educational content distributed to multiple areas, that is, educational, knowledge, healthy, ethical, religious, national, social, aesthetic and economical. Results also showed that the educational and knowledge content are the main contents prevailing among the nine areas. The results pointed out that there is lack of balance in the broadcast of the contents through time phases.

Purpose: The purpose of the present research is to examine the role and influence of modern method of blended learning in the formation and development of professional competencies on the example of the faculty members of Al Ain University from the viewpoint of its students and determine the relevance of the educational method of blended learning in modern society and science according to world situation. Design/methodology/approach: The study sample consisted of 980 male and female students in the second semester of 2019-2020. The comparative analysis of the influence of blended learning on the knowledge level and improvement of professional competencies among students of two faculties was taken into account. Findings: The results of the survey according to chosen criteria showed that the professional competencies required for the faculty members were moderate. According to the results of the survey, most of respondents (75%) are sure that the level of blended learning at their educational institution is high. 35% of respondents think that blended learning helps to develop technological competency as well as self-development (25%), motivation (18%), critical thinking (12%), self-discipline and time management (10%). Originality/value: The relevance of problematic issue of blended learning is determined by the new conditions of educational process connected with pandemic. The prospects for further research can be based on the results of this study especially the relevance is connected with the study of the experience of using modern method of blended learning in different foreign countries on the basis of surveys and developed programs.