Secure Cloud WLAN using Dynamic Placement with a Cloud Name Resolution Protocol

Cloud computing has displayed many intriguing possibilities since it was launched. Few of the cloud computing systems are centralized and might lead to bottlenecks under heavy traffic. This situation will influence security and leads to blockage of a greater part in the network especially when important routers and servers are not working. In the present years there has been a great development on Peer-to-Peer (P2P) cloud computing. In this work, we are providing a protocol to allow cloud servers easily interact and transport session state data between one another. The proposed methodology has been implemented using Visual Studio platform. The platform has been extensively tested and it has demonstrated promising results

Diet, physical activity and bone mineral density of post-menopausal Saudi women and development of a culturally acceptable food product

This study seeks to determine whether higher dietary calcium and vitamin D intakes and increased physical activity are associated with improved bone mineral density (BMD) in Saudi post-menopausal females. A total of 150 women participated in the study. Physical activity questionnaires and three-day food records were used to assess participants' daily routine activities and dietary habits. The levels of physical activity were also tracked over three days using a Letsfit watch, which counted each participant's daily steps. BMD was evaluated using a DXA scan. The findings of the study revealed high osteopenia and osteoporosis prevalence among the participants, estimated at 43.3% and 23.3%, respectively. The study also showed low sunlight exposure and low dietary intake of vitamin D in the participants. There was a positive association between BMD and the number of previous pregnancies and a negative association with the number of years after menopause. There was an observed negative association between daily vitamin D consumption and BMD. However, the result showed no associations among calcium intake, physical activity and BMD.For centuries, cow's milk was used as a source for calcium and vitamins. However, some people have lactose intolerance or an allergy to cow milk, and they seek alternative products to avoid these health problems. The second part of this study aimed to develop gluten, dairy, and soy-free product that would be culturally acceptable in the Middle East. The product developed was entirely plant-based, with the primary ingredients being almond (25%), dates (5%), and figs (5%). Laboratory analysis was performed of the developed almond milk product and an existing commercial product, evaluating their different compositional properties. The commercial almond milk displayed higher levels of moisture, calcium, vitamin D, ash, and pH. Levels of potassium, carbohydrates, fat, sugar, and protein were higher in the developed product. A comparison between the two products was made using sensory evaluation, with the descriptive sensory evaluation showing that consumer acceptance for the developed product was higher than for the existing commercial product. However, fortification of the developed almond milk product with calcium is recommended

Rough action on topological rough groups

[EN] In this paper we explore the interrelations between rough set theory and group theory. To this end, we first define a topological rough group homomorphism and its kernel. Moreover, we introduce rough action and topological rough group homeomorphisms, providing several examples. Next, we combine these two notions in order to define topological rough homogeneous spaces, discussing results concerning open subsets in topological rough groups.The authors wish to thank the Deanship for Scientific Research (DSR) at King Abdulaziz University for financially funding this project under grant no. KEP-PhD-2-130-39. Also, we would like to thank the editor and referees for their valuable suggestions which have improved the presentation of the paper.Altassan, A.; Alharbi, N.; Aydi, H.; Özel, C. (2020). Rough action on topological rough groups. Applied General Topology. 21(2):295-304. https://doi.org/10.4995/agt.2020.13156OJS295304212S. Akduman, E. Zeliha, A. Zemci and S. Narli, Rough topology on covering based rough sets, 1st International Eurasian Conference on Mathematical Sciences and Applications (IECMSA), Prishtine, Kosovo, 3ÔÇô7 September 2012.S. Akduman, A. Zemci and C. Özel, Rough topology on covering-based rough sets, Int. J. Computational Systems Engineering 2, no. 2 (2015),107-111. https://doi.org/10.1504/IJCSYSE.2015.077056N. Alharbi, H. Aydi and C. Özel, Rough spaces on covering based rough sets, European Journal of Pure And Applied Mathematics (EJPAM) 12, no. 2 (2019). https://doi.org/10.29020/nybg.ejpam.v12i2.3420N. Alharbi, H. Aydi, C. Park and C. Özel, On topological rough groups, J. Computational Analysis and Applications 29, no. 1 (2021), 117 -122.A. Arhangel'skii and M. Tkachenko, Topological groups and related structures, Atlantis press/ World Scientific, Amsterdam-Paris, 2008. https://doi.org/10.2991/978-94-91216-35-0N. Bagirmaz, I. Icen and A. F. Ozcan, Topological rough groups, Topol. Algebra Appl. 4 (2016), 31-38. https://doi.org/10.1515/taa-2016-0004R. Biswas and S. Nanda, Rough groups and rough subgroups, Bull. Polish Acad. Sci. Math. 42 (1994), 251-254.E. Brynairski, A calculus of rough sets of the first order, Bull. of the Polish Academy Sciences: Mathematics 37, no. 1-6 (1989), 71-78.G. Chiaselotti and F. Infusino, Some classes of abstract simplicial complexes motivated by module theory, Journal of Pure and Applied Algebra 225 (2020), 106471, https://doi.org/10.1016/j.jpaa.2020.106471G. Chiaselotti and F. Infusino, Alexandroff topologies and monoid actions, Forum Mathematicum 32, no. 3 (2020), 795-826. https://doi.org/10.1515/forum-2019-0283G. Chiaselotti, F. Infusino and P. A. Oliverio, Set relations and set systems induced by some families of integral domains, Advances in Mathematics 363 (2020), 106999, https://doi.org/10.1016/j.aim.2020.106999G. Chiaselotti, T. Gentile and F. Infusino, Lattice representation with algebraic granular computing methods, Electronic Journal of Combinatorics 27, no. 1 (2020), P1.19. https://doi.org/10.37236/8786S. Hallan, A. Asberg and T. H. Edna, Additional value of biochemical tests in suspected acute appendicitis, European Journal of Surgery 163, no. 7 (1997), 533-538.R. R. Hashemi, F. R. Jelovsek and M. Razzaghi, Developmental toxicity risk assessment: A rough sets approach, Methods of Information in Medicine 32, no. 1 (1993), 47-54. https://doi.org/10.1055/s-0038-1634890A. Huang, H. Zhao and W. Zhu, Nullity-based matroid of rough sets and its application to attribute reduction, Information Sciences 263 (2014), 153-165. https://doi.org/10.1016/j.ins.2013.11.014A. Kusiak, Decomposition in data mining: An industrial case study, IEEE Transactions on Electronics Packaging Manufacturing 23 (2000), 345-353. https://doi.org/10.1109/6104.895081A. Kusiak, Rough set theory: A data mining tool for semiconductor manufacturing, IEEE Transactions on Electronics Packaging Manufacturing 24, no. 1(2001), 44-50. https://doi.org/10.1109/6104.924792C. A. Neelima and P. Isaac, Rough anti-homomorphism on a rough group, Global Journal of Mathematical Sciences: Theory and Practical 6, no. 2, (2014), 79-80.M. Novotny and Z. Pawlak, On rough equalities, Bulletin of the Polish Academy of Sciences, Mathematics 33, no. 1-2 (1985), 99-104.N. Paul, Decision making in an information system via new topology, Annals of fuzzy Mathematics and Informatics 12, no. 5 (2016), 591-600.Z. Pawlak,Rough sets, Int. J. Comput. Inform. Sci. 11, no. 5 (1982), 341-356. https://doi.org/10.1007/BF01001956J. Pomykala, The stone algebra of rough sets, Bulletin of the Polish Academy of Sciences, Mathematics 36, no. 7-8 (1988), 495-508.J. Tanga, K. Shea, F. Min and W. Zhu, A matroidal approach to rough set theory, Theoretical Computer Science 471 (2013), 1-11. https://doi.org/10.1016/j.tcs.2012.10.060S. Wang, Q. Zhu, W. Zhu and F. Min, Graph and matrix approaches to rough sets through matroids, Information Sciences 288 (2014), 1-11. https://doi.org/10.1016/j.ins.2014.07.023S. Wang, Q. Zhu, W. Zhu and F. Min, Rough set characterization for 2-circuit matroid, Fundamenta Informaticae 129 (2014), 377-393. https://doi.org/10.3233/FI-2013-97

De-aluminated metakaolin-cement composite modified with commercial titania as a new green building material for gamma-ray shielding applications

Sustainable disposal of dealuminated metakaolin (DAK) is a crucial environmental issue for the alum production industry. In previous studies, DAK was utilized as eco-friendly cementitious materials, but only 10 wt% was used instead of cement as DAK's high percentage has a detri-mental effect on the mechanical properties, so the environmental problem of DAK has not yet been solved. In this study, commercial titanium oxide (TiO2) was incorporated in a cement matrix containing DAK that reached 50 wt% to benefit from TiO2's properties in enhancing the me-chanical performance of binding materials and producing cementitious blends used as blocking materials against harmful gamma radiation. Five pastes were prepared to reach the main target; ordinary Portland cement (OPC), OPC-10%DAK (D10), OPC-30%DAK (D30), OPC-50%DAK (D50) and OPC-45%DAK-5%TiO2 (D45-T5). By means of a mini-slump test, all fresh blends have very close flowability using the appreciated additions of polycarboxylate superplasticizer. The hardened composites were cured in tap water for up to 28-days. Compressive strength results at 28 days for OPC, D10, D30 and D50 were 80, 94.6, 60.8 and 57.6 MPa, respectively. An obvious turning point in strength value from 57.6 to 88 MPa after replacement of DAK by 5 wt% TiO2 (D45-T5). A gamma-ray shielding test was performed using two radioactive isotopes (Co-60 and Cs-137). The inclusion of 5% TiO2 has a great impact on the development of shielding power of D45-T5 compared with OPC; the linear attenuation coefficient (mu) values were enhanced from 0.127 +/- 0.003 cm(-1) to 0.199 +/- 0.007 cm(-1) at 661.6 Kev and from 0.118 +/- 0.003 cm(-1) to 0.144 +/- 0.005 cm(-1) at 1332.5 Kev. The unique properties of specimens containing the anatase phase may be attributed to the fact that the TiO2 may act as a nano-filler and active seeds for the formation of further hydration products such as CSHs, CAHs and CASHs as detected by X-ray diffraction (XRD), thermal analyses techniques (TGA/DSC) and scanning electron microscope (SEM/EDX). TiO2 caused rearrangement of the textural structure of D45-T5 composite to meso pores, as proved by N-2-adsorption/desorption technique. Moreover, the TiO2's tetragonal struc-ture makes it has dosimetric characteristics of high adsorbent for gamma rays

The design and implementation of an Arabic pronunciation application for early childhood

Learning is not limited to a certain age group or a formal study environment.  However, the first eight years, and particularly the first three years, are most important, as the effects of the care and attention provided to the child during this period will continue throughout his or her life. A child’s early learning processes develop their educational abilities and skills, and fosters their academic achievements. Preschool can be very benefit to development and learning for children, but there are differences between countries in this area. It can reduce the repetition in the classroom and can raise achievement scores for students through the preschool programs of high quality (Jacobson and Linda 2008). There are many applications in the Middle East that teach kids, but there is didn't link between the vowels of the Arabic alphabet characters and verbally voice for each character and training to select correct format of Arabic alphabet like (fatha, dama and kasra).   This study aims to develop an educational application for children from the ages of 3 to 5 to help them improve their skills and abilities. The application will also prepare them for school by teaching them the Arabic letters, pronunciation and the short vowels (fatha, dama and kasra). The application also aims to help children communicate and interact more effectively with their external environment by employing several theories about learning skills, such as Piaget’s Theory of Cognitive Development, Edger Dale’s Cone of Learning and Bloom's Taxonomy of Cognitive Goals. The application will focus on the first three levels of Bloom's Taxonomy Pyramid which are ‘Remember’, ‘Understand’ and ‘Apply’. Furthermore, the application will be designed to aid children with their Arabic pronunciation, and aural and oral skills, and train and educate them in preparation for attending school. The expected result is that it will be considerably better than educational books for children’s education. Combining education and play in e-learning applications is an important way to attract children

Mucormycosis co-infection in COVID-19 patients: An update

Mucormycosis (MCM) is a rare fungal disorder that has recently been increased in parallel with novel COVID-19 infection. MCM with COVID-19 is extremely lethal, particularly in immunocompromised individuals. The collection of available scientific information helps in the management of this co-infection, but still, the main question on COVID-19, whether it is occasional, participatory, concurrent, or coincidental needs to be addressed. Several case reports of these co-infections have been explained as causal associations, but the direct contribution in immunocompromised individuals remains to be explored completely. This review aims to provide an update that serves as a guide for the diagnosis and treatment of MCM patients’ co-infection with COVID-19. The initial report has suggested that COVID-19 patients might be susceptible to developing invasive fungal infections by different species, including MCM as a co-infection. In spite of this, co-infection has been explored only in severe cases with common triangles: diabetes, diabetes ketoacidosis, and corticosteroids. Pathogenic mechanisms in the aggressiveness of MCM infection involves the reduction of phagocytic activity, attainable quantities of ferritin attributed with transferrin in diabetic ketoacidosis, and fungal heme oxygenase, which enhances iron absorption for its metabolism. Therefore, severe COVID-19 cases are associated with increased risk factors of invasive fungal co-infections. In addition, COVID-19 infection leads to reduction in cluster of differentiation, especially CD4+ and CD8+ T cell counts, which may be highly implicated in fungal co-infections. Thus, the progress in MCM management is dependent on a different strategy, including reduction or stopping of implicit predisposing factors, early intake of active antifungal drugs at appropriate doses, and complete elimination via surgical debridement of infected tissues