Appling Authorities Granted to School principals in male and female school principals in the General Administration of Education and Teaching in Asir

This study aims to identify the current situation and the importance of utilizing the granted authority of male and female school principals in the General Administration of Education and Teaching in Asir. It also aims to investigate the difficulties of applying this authority and to identify the different attitudes of the student population towards these principals based on various variables -- gender, level of education and years of teaching experience. A survey was developed by the researcher to collect the data from 324 school principals at the Asir Educational Directorate. The most significant outcome revealed from this study is that the level of applying the principals' authority was 1.77 and the importance of utilizing authority was high (2.33). The overall average of difficulty was 2.33. Results also showed that there was a significant statistical difference between the means of males and females in the estimation of difficulties which prevent utilizing authority granted to school principals which favored females participants. In regards to the years of experience, the study revealed that there were significant statistical differences among the student population in favor of those principals who had experience of more than ten years. Nevertheless, in light of the current study results, suggested recommendations are enhancing the awareness of the importance of utilizing authority, providing the requirements of applying verbal authority, and helping to ease the implementation of this authority

From Compressive Sensing to Machine Learning in Smart Grids

Traditional power grids are a single-layered physical system, while smart grids are an extension of traditional power grids that are cyber-physical networks, and the main difference is smart grids include an information layer. There is a huge amount of information being managed within recent smart grids, and the decentralized power generation adds an extra level of uncertainty to smart grids. The standard methods of monitoring and security available cannot work as expected when collecting and analyzing the large amount of data presented from different parameters in the power network. Compressive sensing is a signal processing tool that is used to monitor single and simultaneous fault locations in smart distribution and transmission networks, to detect harmonic distortions, and to recognize patterns of partial discharge. Compressive sensing reduces the measurement cost and the management cost since it can detect or rebuild a signal from very few samples. In this thesis, we propose to design and implement the fault detection via a feedforward neural network using similar regularizations as in compressive sensing. We shall use the adaptivity of neural networks to tackle with state changes in the smart grid, proving the scalability and the decentralized capability of a neural network for fault detection in the grid. Two codes have been created against two different databases, and it was found that indeed, a feedforward autoencoder would be great at fault detection, however, many things should be considered prior to implementing it on a large scale. The most important part of any autoencoder generation is a good dataset

Can creative circles improve reading comprehension and creative thinking of Saudi third-grade middle school EFL learners?

Ph. D. ThesisReading is an abundant source of creativity and one of the main ways for foreign language learners (EFL) to acquire information. Likewise, creativity is an essential life skill which is highly related to EFL development. Yet, studies have shown that EFL learners lack basic reading skills and many face comprehension difficulties. Nor is creativity fully established and appreciated in the context of EFL. This study explored perceptions of supervisors’, teachers' and learners' on reading, collaboration and creativity. It investigated the effects of incorporating Creative Circles (C.C.) approach on Saudi EFL learners' reading comprehension and creative thinking. A mixed method approach was adopted in this quasi-experimental study. Eight EFL supervisors, 45 EFL teachers and 90 EFL learners from three natural classes in one middle-school participated in the study. Prior to the intervention, surveys and interviews were conducted to find out the extent to which reading skills and creativity are promoted in reading classes and to explore participants’ perceptions on collaborative reading and creativity. The three classes were taught by the same teacher with one being an experiment class (C.C. class) and the other two as comparison classes. During the three-month long intervention, learners in the experiment class were introduced to the Creative Circles approach, while the other two classes approached reading lessons as they normally did without any changes or modifications. All the participants were tested for their reading comprehension and creativity prior to and after the completion of the intervention. In addition to quantitative data, learners in the experiment class and the teacher were asked to keep journals to describe their learning/teaching experience about the C.C. approach. The quantitative data was then analysed using t-test, ANOVA and correlation analysis, whereas the qualitative data was analysed thematically. The findings reveal an insufficient understanding and lack in promoting of reading skills, collaboration and creative thinking among Saudi EFL supervisors, teachers and students. Comparisons of pre-and post-tests results show that incorporating C.C. approach in teaching reading could improve students’ reading comprehension and creative thinking domains (with the exception of originality). the C.C. approach also appears to have a positive impact on students’ attitudes towards reading and collaboration. The correlation analysis did not show a significant relationship between reading and creativity. Drawing from the findings of this study, suggestions and pedagogical implications for reading instruction and fostering creativity in the Saudi EFL classroom and the wider EFL context are discusse

Triple-A: Secure RGB Image Steganography Based on Randomization

A new image-based steganography technique – called triple-A algorithm - is proposed in this paper. It uses the same principle of LSB, where the secret is hidden in the least significant bits of the pixels, with more randomization in selection of the number of bits used and the color channels that are used. This randomization is expected to increase the security of the system and also increase the capacity. This technique can be applied to RGB images where each pixel is represented by three bytes to indicate the intensity of red, green, and blue in that pixel

Resolving Cavitation Problems of High Energy Water Injection Pumps

Case Study•Introduction - Project objectives - History - Field data •Analysis method - Computational Fluid Dynamics (CFD) - Visualization test •Project results •Lessons learne

Eliminating Cavitation Damage In High-Energy Water Injection Pumps By Suction Impeller Redesign

Case Stud

Selected Dietary Nutrients and the Prevalence of Metabolic Syndrome in Adult Males and Females in Saudi Arabia: A Pilot Study

published_or_final_versio

Sequencing, Analysis, and Annotation of Expressed Sequence Tags for Camelus dromedarius

Despite its economical, cultural, and biological importance, there has not been a large scale sequencing project to date for Camelus dromedarius. With the goal of sequencing complete DNA of the organism, we first established and sequenced camel EST libraries, generating 70,272 reads. Following trimming, chimera check, repeat masking, cluster and assembly, we obtained 23,602 putative gene sequences, out of which over 4,500 potentially novel or fast evolving gene sequences do not carry any homology to other available genomes. Functional annotation of sequences with similarities in nucleotide and protein databases has been obtained using Gene Ontology classification. Comparison to available full length cDNA sequences and Open Reading Frame (ORF) analysis of camel sequences that exhibit homology to known genes show more than 80% of the contigs with an ORF>300 bp and ~40% hits extending to the start codons of full length cDNAs suggesting successful characterization of camel genes. Similarity analyses are done separately for different organisms including human, mouse, bovine, and rat. Accompanying web portal, CAGBASE (http://camel.kacst.edu.sa/), hosts a relational database containing annotated EST sequences and analysis tools with possibility to add sequences from public domain. We anticipate our results to provide a home base for genomic studies of camel and other comparative studies enabling a starting point for whole genome sequencing of the organism

Sequencing, Analysis, and Annotation of Expressed Sequence Tags for \u3ci\u3eCamelus dromedarius\u3c/i\u3e

Despite its economical, cultural, and biological importance, there has not been a large scale sequencing project to date for Camelus dromedarius. With the goal of sequencing complete DNA of the organism, we first established and sequenced camel EST libraries, generating 70,272 reads. Following trimming, chimera check, repeat masking, cluster and assembly, we obtained 23,602 putative gene sequences, out of which over 4,500 potentially novel or fast evolving gene sequences do not carry any homology to other available genomes. Functional annotation of sequences with similarities in nucleotide and protein databases has been obtained using Gene Ontology classification. Comparison to available full length cDNA sequences and Open Reading Frame (ORF) analysis of camel sequences that exhibit homology to known genes show more than 80% of the contigs with an ORF\u3e300 bp and ~40% hits extending to the start codons of full length cDNAs suggesting successful characterization of camel genes. Similarity analyses are done separately for different organisms including human, mouse, bovine, and rat. Accompanying web portal, CAGBASE (http://camel.kacst.edu.sa/), hosts a relational database containing annotated EST sequences and analysis tools with possibility to add sequences from public domain. We anticipate our results to provide a home base for genomic studies of camel and other comparative studies enabling a starting point for whole genome sequencing of the organism

Overview on Blood Transfusion-Transmitted Diseases

As it is important for the Blood transfusion to be extremely safe, some measures have to be taken long safeguarded the blood supply from the major transfusion transmissible diseases (TTIs).  The risk of transfusion-transmitted infection (TTI) rises with the number of donors exposed, and the effects of TTI are frequently more severe in immune compromised people. TTIs (hepatitis B virus [HBV], HIV, and hepatitis C virus [HCV]) are examples of typical transfusion-transmitted infectious agents. As a result of the gradual application of nucleic acid-amplification technology (NAT) screening for HIV, HCV, and HBV, the residual risk of infected window-period donations has been minimized. Nonetheless, infections emerge far more frequently than is commonly acknowledged, needing ongoing surveillance and individual assessment of transfusion-associated risk. Although there is a constant need to monitor present dangers owing to established TTI, the ongoing issues in blood safety are mostly related to surveillance for developing agents, as well as the creation of quick reaction systems when such agents are detected