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دور القيادة الخادمة في السلوك الإبداعي لدى المعلمين
Get PDFهدفت الدراسة الحالية إلى التعرف على دور القيادة الخادمة في السلوك الابداعي لدى معلمي مديرية التربية و التعليم لواء ماركا، ولغايات تحقيق أهداف الدراسة الحالية تم استخدام المنهج الوصفي و التحليلي لملائمته لنوع الدراسة، حيث تم تطوير استبانة لجمع البيانات من العينة التي تم اخيارها بالطريقة العشوائية من مجتمع الدراسة المكون من جميع معلمي مديرية التربية والتعليم للواء ماركا والبالغ عددهم (6814)، وتم أخذ عينة عشوائية قوامها (365) معلماً ومعلمة، حيث تم ارسال وتطبيق الاستبانة إلكترونياً، وتم استرجاع (314) استبانة أي ما نسبته 86% من إجمالي عينة الدراسة وجميعها تصلح لأغراض التحليل الإحصائي، وأظهرت نتائج الدراسة وجود علاقة ارتباطية بين للقيادة الخادمة بأبعادها المتمثلة في (الايثار، المشاركة العاطفية، التمكين) في السلوك الابداعي للمعلمين في المدارس، وقد أوصت الدراسة بزيادة الاهتمام في القيادة الخادمة في المؤسسات التعليمية لما لها من أهمية في إبراز دور العاملين ومشاركتهم وتحسين العلاقات بينهم، وتشجيع معلمي مديريات التربية والتعليم على استخدام السلوك الإبداعي وذلك لما له من أهمية في تحسين جودة العملية التعليمية
The current study aimed to identify the role of servant leadership in the creative behavior of the teachers of the Directorate of Education, Marka District, and for the purposes of achieving the objectives of the current study, the descriptive and analytical approach was used for its suitability to the type of study, where a questionnaire was developed to collect data from the sample that was chosen randomly from The study population consisting of all the teachers of the Directorate of Education of Marka district, whose number is (6814), and a random sample of (365) male and female teachers was taken, where the questionnaire was sent and applied electronically, and (314) questionnaires were retrieved, which is 86% of the total study sample. And all of them are suitable for the purposes of statistical analysis, and the results of the study showed a correlation between the servant leadership and its dimensions of (altruism, emotional participation, empowerment) in the creative behavior of teachers in schools, and the study recommended increasing interest in servant leadership in educational institutions because of its importance in highlighting The role of workers, their participation and improvement of relations between them, and encouragement of teachers of education directorates to use creative behavior because of its importance in improving the quality of the educational proces
Development of a Drive-rod Unified Variable Pitch Control Mechanism for Small-scale Horizontal Wind Turbines
Get PDFTypically, small-scale wind turbines use either a breaking equipment or stall control methods once the wind speed exceeds its rated value. This is to limit the power extracted from the wind turbines which largely depends on the blades\u27 shape and pitch angle. Most of small-scale wind turbines are of fixed pitch angle to avoid complexity and cost. In this work, a novel drive-rod unified variable pitch drive mechanism is proposed for blades pitch control for small-scale horizontal wind turbines. The mechanism is powered by a DC motor coupled with a lead screw which in turn is connected to the pitch drive mechanism. Details of the mechanical design and Kinematic relations relating the Dc motor angular position and the blades’ pitch angle is also discussed
The effect of nanoparticles incorporation on antimicrobial and bond strength properties of bio-ceramic sealer (An In Vitro Study)
Get PDFAim: This research intended to assess how the addition of nanoparticles impacts the antimicrobial effectiveness and bonding ability of bio-ceramic sealers when compared to resin-based sealers.. Materials and Methods: Bioactive glass nanoparticles (BG NPs) were prepared via a modified Stöber process. AH Plus and Bio-C Sealer were mixed with (BG NPs). Part I: Antibacterial tests involved 96 tubes divided into 6 main groups , tests were conducted using Enterococcus faecalis using direct contact test (DCT). Part II: Push-out tests utilized 32 extracted human permanent anterior teeth and were performed to evaluate bond strength. Results: Resin-based sealers and bio-ceramic sealers exhibited improved antimicrobial properties with nanoparticle incorporation. Bond strength was highest in the apical third for bio-ceramic sealers with nanoparticles, followed by bio-ceramic without nanoparticles, resin-based with nanoparticles, and resin-based without nanoparticles. Conclusion: Incorporating nanoparticles enhanced the antibacterial activity and bond strength of root canal sealers. Resin-based sealers demonstrated higher initial antibacterial efficacy, while bio-ceramic sealers showed superior bond strength, particularly in the apical third of root canals. The findings suggest that adding nanoparticles could improve the characteristics of root canal sealers, possibly resulting in better treatment results
Oral Health-Related Quality of Life: A Cross-Sectional Comparison Between Dental and Non-Dental Students at Newgiza University
Get PDFIntroduction: Evaluating oral health-related quality of life (OHRQoL) among Egyptian dental students can broaden the traditional focus on dental criteria to include social, emotional, and functional aspects. This perspective shift is vital as background knowledge influences both perceptions and behaviors regarding oral health. Comparing OHRQoL between dental and non-dental students is crucial for understanding these differences.
Aim: This study aims to compare the oral health related quality of life and oral hygiene measures between a group of dental and non-dental students at Newgiza University.
Methods: During the Oral Health Day at Newgiza University, the short form of the Oral Health Impact Profile-14 questionnaire (OHIP-14) was used to evaluate Oral Health Quality of Life in a group dental students and non-dental students. Oral hygiene measures and number of dental visits were also evaluated across the perceived quality of life Numerical data was represented as mean and standard deviation (SD) values and were analyzed for normality using Shapiro-Wilk’s test. OHIP score data were non-parametric and were analyzed using Kruskal-Wallis test followed by Dunn’s post hoc test with Bonferroni correction. The significance level was set at p
Results: Non-dental students had significantly higher scores regarding “Functional limitation” and “Physical pain” (p0.05). There was a significant difference between dental and non-dental students regarding frequency of tooth brushing with significantly higher percentage of dental students brushing twice daily and a significantly higher percentage of non-dental students brushing once daily.
Conclusion: Background knowledge influences both oral hygiene behaviors and perceptions of OHRQoL, highlighting the impact of dental education on oral health practices and quality of life
The Degree of Commitment of School Principals in the Directorate of Education of the First Irbid Qasabah to the Code of Occupational Conduct and its Relationship to Teachers\u27 Job Satisfaction from their Perspectives
Get PDFThe study aimed to identify the degree of commitment of school principals in the Directorate of Education of Irbid Qasabah to the code of professional behavior and its relationship to job satisfaction among teachers from their perspective. The descriptive survey method was employed, with a questionnaire serving as the tool for data collection and analysis. The questionnaire was administered to a sample of 360 male and female teachers, selected using a simple random sampling method. The results indicated that the degree of commitment of school principals in the Directorate of Irbid Qasabah to the code of professional behavior was high. Additionally, the level of job satisfaction among schoolteachers in Irbid Qasabah was found to be medium. A statistically significant moderate positive correlation (α = 0.05) was identified between the degree of commitment of school principals to the code of conduct and its related fields, on one hand, and the measure of job satisfaction and its domains, on the other hand. In light of these findings, the researchers recommend that the competent authorities in the Ministry of Education continue to conduct training courses focused on promoting the concept of a code of professional conduct for school principals. They should also work toward implementing this code in various aspects of school operations and ensure that principals create a supportive and stimulating educational environments for all teachers, which contributes to achieving the school\u27s mission and vision and encourages teachers to be loyal and dedicated to their work
دور مديري المدارس فى توفير متطلبات البيئة الصفية الإبداعية لدى طلبة المرحلة الأساسية
Get PDFهدف المقال التعرف إلى دور مديري المدارس فى توفير متطلبات البيئة الصفية الإبداعية لدى طلبة المرحلة الأساسية في محافظة إربد من وجهة نظر المعلمين، ولتحقيق هدف الدراسة تم استخدام المنهج الوصفي، إذ تم اختيار عينة قوامها (407) من معلمي مدارس المرحلة الأساسية في محافظة إربد، وتم تطبيق استبانة لقياس دور مديري المدارس فى توفير متطلبات البيئة الصفية الإبداعية لدى طلبة المرحلة الأساسية. وتوصلت النتائج إلى وجود فروق ذات دلالة إحصائية عند مستوى((α ≥ 0.05 بين استجابات أفراد العينة من معلمي المدارس حول دور مديري المدارس فى توفير متطلبات البيئة الصفية الإبداعية تعزى لمتغير الجنس لصالح الأناث. ويوجد فروق ذات دلالة إحصائية عند مستوى ((α ≥ 0.05بين استجابات أفراد العينة من معلمي المدارس حول دور مديري المدارس فى توفير متطلبات البيئة الصفية الإبداعية تعزى لمتغير سـنوات الخبرة ولصـالح الذين سـنوات خدمتهم من فئة (1-5). وأوصـت الدراسـة بالتعاون ما بين المعلمين والإدارة للوصـول إلى البيئة المدرسـية الإبداعية
The article aimed to identify the role of school principals in providing the requirements of a creative classroom environment for primary school students in Irbid Governorate from the teachers\u27 point of view. To achieve the study\u27s objective, the descriptive approach was used, where a sample of (407) primary school teachers in Irbid Governorate was selected, and a questionnaire was applied to measure the role of school principals in providing the requirements of a creative classroom environment for primary school students. The results showed that there were statistically significant differences at the level of ((α ≥ 0.05 between the responses of the sample members of school teachers about the role of school principals in providing the requirements of a creative classroom environment attributed to the gender variable in favor of females, and there were statistically significant differences at the level ((α ≥ 0.05 between the responses of the sample members of school teachers about the role of school principals in providing the requirements of a creative classroom environment attributed to the variable of years of experience and in favor of those whose years of service are from the category (1-5). The study recommended cooperation between teachers and administration to reach a creative school environment
الإدارة الذاتية وعلاقتها بالاستعداد لإدارة الأزمات لدى مديري المدارس الحكومية في عمان
Get PDFهدف المقال إلى الكشف عن العلاقة بين الإدارة الذاتية واستعداد مديري المدارس الحكومية في عمان لإدارة الأزمات من وجهة نظر المعلمين، والكشف عن الفروق الإحصائية التي تعزى لمتغيرات (الجنس، الخبرة، المؤهل العلمي). أظهرت النتائج أنَّ مستوى الإدارة الذاتية لدى مديري المدارس الحكومية في عمان من وجهة نظر المعلمين، جاء بمستوى (مُرتفع)، أنَّ مستوى استعداد مديري المدارس الحكومية في عمان لإدارة الأزمات من وجهة نظر المعلمين، جاء بمستوى (مُرتفع). كما أظهرت النتائج أن هناك علاقة ارتباطية ذات دلالة إحصائية بين الإدارة الذاتية والاستعداد لإدارة الأزمات لدى مديري المدارس من وجهة نظر المعلمين. بالإضافة إلى أن النتائج بينت عدم وجود فروق ذات دلالة إحصائية لمستوى الإدارة الذاتية لدى مديري المدارس تعزى لمتغيرات (الجنس، المؤهل العلمي, سنوات الخبرة). بينما على الجانب الاخر تبين وجود فروق في مستوى استعداد مديري المدارس لإدارة التميز تعزى لمتغيرات (الجنس، الخبرة), في حين أن هناك فروق في مستوى استعداد مديري المدارس لإدارة التميز تعزى لمتغير (المؤهل العلمي). وأوصت الباحثة بضرورة العمل على تدريب مديري المدارس على تطبيق الإدارة الذاتية وتأهليهم لاستعداد لإدارة الأزمات
The article aimed to reveal the relationship between self-management and the readiness of public school principals in Amman to manage crises from the point of view of teachers, and to reveal statistical differences attributed to variables (gender, experience, educational qualification). The results showed that the level of self-management among public school principals in Amman, from the teachers’ point of view, was (high), and that the level of readiness of public school principals in Amman to manage crises, from the teachers’ point of view, was (high). The results also showed that there is a statistically significant correlation between self-management and readiness for crisis management among school principals from the point of view of teachers. In addition, the results showed that there were no statistically significant differences in the level of self-management among school principals due to the variables (gender, educational qualification, and years of experience). While on the other hand, it was found that there are differences in the level of school principals’ readiness to manage excellence due to the variables (gender, experience), while there are differences in the level of school principals’ readiness to manage excellence due to the variable (academic qualification). The researcher recommended the necessity of training school principals to apply self-management and qualifying them to prepare for crisis managemen
Non-Linear Analysis of Axially Loaded Built-Up Open Section Cold-Formed Columns
Get PDFBuilt-up open cold-formed sections are commonly used in entrances, structural corners, and window frames. These elements exhibit low torsional stiffness and are highly susceptible to cross-sectional deformation. Battened built-up cold-formed steel (CFS) open columns offer enhanced load-carrying capacity when individual profiles cannot withstand applied loads.
Extensive research has focused on understanding the buckling behavior of these structural elements. However, limited studies have explored the impact of spacing between cold-formed C-channel sections. Existing research suggests that battened columns with adequately spaced members exhibit superior structural performance compared to those with closely spaced channels.
A critical factor affecting the performance of battened columns is the slenderness ratio of the unsupported length (Lz) between batten plates. Despite its significance, this aspect has been insufficiently explored in prior studies. The literature lacks defined limiting values for different column slenderness ratios, back-to-back distances between channel sections, and unsupported lengths between batten plates. Consequently, design methods proposed by various researchers may be unreliable.
This study investigates the performance of axially loaded pin-ended columns, comprising two
appropriately spaced lipped C-channels arranged back-to-back to form open built-up sections.
Finite element models were developed using the ABAQUS platform and validated against test results from the literature. Following validation, the models were used for a comprehensive parametric analysis by varying key parameters, such as back-to-back distance, depth-to-width ratios, number of battens, column slenderness ratios, and the relative slenderness of unsupported chords. The study provides a detailed evaluation of how these parameters influence the structural performance of battened columns, offering valuable insights for design optimization and performance assessment
Mechanical Properties of High Strength Geopolymer Concrete Incorporating Silica fume and Hybrid fibers
Get PDFABSTRACT
Geopolymer is considered to be an eco-friendly binder and replacement for ordinary Portland cement as it leads to a reduction in CO2 emissions and energy saving.This study investigates the mechanical properties of geopolymer concrete, focusing on its early-age (7 and 28 days) and late-age (56 days) mechanical performance. Four experimental groups were designed, each incorporating different material compositions to assess their influence on compressive strength, splitting tensile strength, flexural strength and to develop optimal mix proportions for geopolymer concrete that balance mechanical performance, minimizing the carbon footprint while maximizing strength .A total of nine fly ash-based geopolymer mixtures designs were examined to obtain an optimal constituent mixes corresponding to high mechanical strength . Group 1 examined the effect of varying fly ash content, while Group 2 introduced silica fume at 10% and 20% replacement levels. Group 3 incorporated both silica fume and steel fibers (1%) to evaluate their combined impact, whereas Group 4 explored silica fume, introducing macro and micro polypropylene hybrid fibers .The results indicate that silica fume enhances strength moderately, but its effect is significantly amplified when combined with fibers. Steel fibers yielded the highest improvements in tensile and flexural strength, particularly in Mix M5 (1% Steel Fiber + 20% Silica fume), making it ideal for high-stress structural applications. Conversely, polypropylene fibers improve tensile and flexural strength, but not as significantly as steel Fibers . Compressive strength improvement was moderate, similar to steel fiber, making them suitable for lightweight or impact-resistant structures.so it contributed to durability and crack resistance, improving toughness rather than significantly increasing strength
Effectiveness of Creative Supervision Methods in Enhancing Professional Identity among Trainee Counselors at Yarmouk University
Get PDFThis study aimed to explore the effectiveness of creative supervision methods in enhancing the professional identity of trainee counselors. The study sample consisted of 30 trainee counselors enrolled in the Department of Educational and Counseling Psychology at the Faculty of Education, Yarmouk University. The participants were randomly assigned to two groups: an experimental group (n = 15), which participated in the supervisory program, and a control group (n = 15), which did not receive any intervention. To achieve the study objectives, the researchers used a professional identity scale to collect and measure data in pre- and post-tests for both groups, as well as a follow-up test for the experimental group only. The analysis of covariance results revealed statistically significant differences between the experimental and control groups in post-test scores on the professional identity scale, favoring the experimental group, which indicates the effectiveness of the training program