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No. Researcher Title Abstract Year
2661 Tin Mar Lwin1 RELATIONSHIP BETWEEN PRINCIPALS’ LEADERSHIP COMPETENCIES AND SCHOOL CULTURE This study examined the relationships between the leadership competencies of school principals and school culture at selected Education Degree Colleges in Upper Myanmar. Two hundred and twenty-eight teachers in selected Education Colleges were chosen as the sample by using the purposive sampling method. Data for the quantitative study were collected using the Competency Approach survey developed by Glover (2015) to measure the perceptions of teachers about the leadership competencies of school principals and the School Culture Triage Survey developed by Wanger (2006, as cited in Glover, 2015) to measure the perceptions of teachers about school culture. For the qualitative data, interviews were conducted with 20 teachers from four selected Education Degree Colleges in Upper Myanmar to obtain detailed information. The data was analyzed using descriptive statistics and the Pearson-product moment correlation coefficient through SPSS software. When studying the perceptions of teachers on principals? leadership competencies, generally, teachers from selected Education Degree Colleges perceived that their principals? leadership competencies were moderate, with a mean value of 3.62. In addition, this study also found that school culture was high, with a mean value of 3.72. Moreover, this study also revealed that principals? leadership competencies (r=.586, p<.01) were positively and moderately correlated with school culture at selected Education Degree Colleges. In addition, the qualitative data provided by interviews with teachers was consistent with the quantitative findings. 2025
2662 Ei Khaing Win1, Zin Nwe Than 2 and Khaing Khin Kyaw3 AN EXPLORATORY STUDY OF BEGINNING TEACHERS’ PERCEPTIONS ON TEACHER PROFESSIONALISM The aim of this study is to explore the beginning teachers’ perceptions on teacher professionalism in seven selected townships in Mandalay Region. The questionnaire survey was constructed based on the models of Dr. Kornhauser (1962), Hall (1968), Hargreaves and Goodson (1996), Tichenor and Tichenor (2009), and the OECD (2016). It included 68 items, which had five subscales: subject and pedagogical knowledge, commitment, autonomy, ethics, relationships, and work responsibilities beyond the classroom. A four-point Likert scale was used in this study. Although the questionnaires were distributed to 423 beginning teachers from the selected townships, the responses of 407 beginning teachers were collected for the study. After collecting the data, descriptive statistics, an independent samples t-test, one way ANOVA, and post-hoc multiple comparison tests were calculated to analyze the data. The findings showed that the beginning teachers’ perceptions on teacher professionalism were high. It was found that there was a significant difference in perceptions of beginning teachers in the dimension of autonomy according to their gender and in the dimension of subject and pedagogical knowledge according to their teaching subjects. However, no significant differences were found in beginning teachers’ perceptions on teacher professionalism according to their age, position, academic qualification, and professional training. The information gained from the responses to three open-ended questions was complementary to the quantitative findings. 2025
2663 Aye Aye Myint Lay1 CURRENT PRACTICES OF BASIC EDUCATION HIGH SCHOOL PRINCIPALS AS INSTRUCTIONAL LEADERS This study aimed to investigate the practices of basic education high school principals as instructional leaders in selected basic education high schools. Mixed-method research design was used in this study. For quantitative study, two research instruments, questionnaire (1) for principals and questionnaire (2) for senior teachers, including seven instructional leadership practices developed by Chell (2002), were used to collect data. Survey data were collected from 131 participants (5 principals and 126 teachers), and 10 participants were interviewed. Descriptive statistics, one-way ANOVA and Post Hoc Multiple Comparison Tests (Turkey HSD) were used to analyze the data in this study. Analysis of principals’ instructional leadership rated by principals themselves revealed that principals from high schools in Monywa township practised positive school climate, group development, and school and community involvement mostly as their important instructional leadership practices. On the other hand, teachers’ perceptions of their principals’ instructional leadership practices indicated that the principals most frequently practiced positive school climate, group development, and curriculum implementation. There were significant differences in instructional leadership practices among selected high schools. This study suggests that good instructional leadership requires collaboration with colleagues to solve instructional problems. 2025
2664 Yi Yi Win1, Lett Lett Thein Tun2, Yin Yin Htwe3, Aye Aye Thant4 STRUCTURE-ACTIVITY RELATIONSHIPS OF FLAVONOIDS ISOLATED FROM SOME MEDICINAL PLANTS: ANTIOXIDANT AND ANTIDIABETIC PROPERTIES* The present research deals with chemical structure and some biological activities relationship of isolated flavonoids from some medicinal plants. Three flavonoids, namely luteolin 1, dihydroquercetin 7,4?-dimethyl ether 2 have been isolated from the peel of Citrus maxima (Burm.) Marr; naringenin 3 is obtained from Peltophorum pterocarpum (DC.) K. Heyne flower. Their structures were comparatively confirmed by UV, chemical test and co-TLC with their respective standards. Their biological activities were evaluated for antioxidant properties using the DPPH assay, ?-amylase and ?-glucosidase inhibition in vitro, and in vivo hypoglycemic effects in an alloxan-induced diabetic mice model. The antioxidant effects of flavonoids 1, 2, and 3 by DPPH assay were IC50 values 1.5 ?M, 9.4 ?M, and 27.7 ?M, respectively. Luteolin (1) exhibited the most potent antioxidant, ?-amylase, and ?-glucosidase inhibitory activities. In vivo, luteolin (1) also demonstrated significant hypoglycemic effects. This study suggests that flavonoids with hydroxyl groups at C-5 and C-7 in ring A, a carbonyl oxygen at C-4, a double bond between C-2 and C-3 in ring C, and hydroxyl groups at C-3' and C-4' in ring B are likely to possess potent antioxidant and antidiabetic activities. 2026
2665 - - - 2026
2666 Myat Kay Khaing1, Nyein Wint Lwin2 APPLYING VARIATION PRINCIPLE TO 3D QUANTUM HARMONIC OSCILLATOR SYSTEM* Quantum system with 3D harmonic oscillator well is one of the few problems in quantum mechanics that can be solved analytically. In this work, variational principle is applied to calculate eigenvalues and eigenstates of 3D harmonic oscillator system. The trial wave function is chosen as a linear superposition of Gaussian basis function of the form rmie? r2 ? ?2 . To validate the variational results, a numerical approach known as Numerov method is also used to calculate energy values and wave functions. The calculated values are further compared with analytical solutions. The results demonstrate that for a basis size of twelve, the energy values for low-lying states up to N = 15 agree very well with t 2026
2667 Ei Pyae Pyae Khin1, Swe Swe Win2, Tin Lay Mon3 and Kay Lwin Tun4 LIFE CYCLE AND NUTRITIONAL COMPOSITION OF DUNG BEETLE, HELIOCOPRIS BUCEPHALUS (FABRICIUS, 1775), UNDER CAPTIVE CONDITION* Larvae of Heliocopris bucephalus, commonly known as the dung beetle, are edible insects with high market value in Myanmar. The aim of the present study was to examine the life cycle of the cow dung beetle, Heliocopris bucephalus (Fabricius, 1775), under captive conditions and analyze the nutritional composition of its pupal stages. The rearing of dung beetles were conducted in two parts: Experiment I focused on the developmental stages from adults to the third instar larvae, while Experiment II covered the development from natural brood balls, fourth instar larvae, to the adult stages. For the first part of the study, thirty adult beetles were randomly collected from a three-feet-height dung hill in Pobba Thiri Township, Nay Pyi Taw Division, and reared in insect boxes (15.75 x 11.75 x 9.5 inches) filled with layers of cow dung at the Applied Entomology Laboratory, Zoology Department, University of Yangon, in November 2023, with a sex ratio of one male to three females. The adults built brood balls, but they were not as tightly packed as those in natural conditions. After about two and a half months, the third instar larvae in the brood balls were killed due to infection by entomopathogenic fungi and predation by mole crickets that had contaminated the dung. The rearing boxes were renovated to prevent fungal infection and predators and Experiment II was conducted. Experiment II started with the collection of wild dung brood balls containing fourth instar larvae which were then cultivated in the laboratory. The fourth instar larvae developed into fully grown adults after a study period of three months. The entire life cycle of Heliocopris bucephalus, combining the results from Experiments I and II, lasted approximately six months to complete. The nutritional values of the pupal stage, which is the edible stage, were analysed for protein, fat, carbohydrate, fibre, moisture and ash content. The pupae contained 45.40% protein, 29.16% fat, 13.92% carbohydrate, 3.86% fibre, 3.44% moisture, 4.22% ash content and 497 kcal/g energy value. The nutritional content of H. bucephalus is higher than that of livestocks, with the protein content being nearly double that of soybeans, which have the highest protein content among plant-based foods. 2026
2668 Lwin Mar Saing1 EVOLUTIONARY TRENDS OF SOME WILD CEREAL FROM IN -DAW -GYI LAKE, MOHNYIN TOWNSHIP, KACHIN STATE* All grasses belong to the angiosperm’s family Poaceae under order Poales. There are more than 13000 species of grasses on the planet, and grass dominated ecosystems. In this research, 16 species of wild cereal grasses collected from In - daw- gyi Lake, Mohnyin Township, Kachin state. The survey area is the largest lake in South East Asia and richness of primitive plant diversity region. The collected species were classified and identified by Halfliger and Scholz's classification (1981) was based upon the detail morphological characters. This research presents the evolutionary affinities of wild cereal grasses that based on grass ’s detail taxonomic morphological characters in principles of author’ citations and highlights the primitive simplicity to advanced modified complexity of wild cereal grasses changed by their environmental adaptation status in survey region. This result found that the integrations status of primitive and advanced modified characters in individual species of grass’s phylogeny. The aim and objectives of this research are supporting the better understanding of wild cereal grass’s taxonomy and evolutionary trends in survey area for professional specialists, scientists, all academician and researchers in family Poaceae. 2026
2669 Thiri Soe1 CONTENT ANALYSIS IN ACTION: INVESTIGATING CRITICAL THINKING IN ENGLISH LANGUAGE TEXTBOOKS* Critical thinking is recognized as one of the most essential skills for 21st century learners. From the perspective of English language teaching, teachers, researchers, and syllabus writers think of learners’ language acquisition through critical thinking as an effective language pedagogical approach. The present study examines the integration of critical thinking in New Language Leader textbooks by using content analysis method, aiming to raise awareness among teachers, researchers, pedagogues, and regional and national authorities about the representation of critical thinking in EFL textbooks. The findings of the study revealed that the textbooks had strengths in terms of incorporating higher order thinking skills into language tasks and activities. The textbooks were found to effectively integrate higher order thinking skills into language tasks compared to the textbooks examined in previous studies mentioned in the literature review section. However, the detailed analysis of knowledge and cognitive thinking skills revealed that procedural and metacognitive knowledge types are not properly integrated into the textbooks. Among the six thinking skills, applying and creating thinking skills are underemphasized. Based on the findings of the analysis, the study recommends that EFL teachers should take steps to address the underemphasized knowledge types and thinking skills identified in the textbooks. Specifically, teachers are encouraged to customize their language instruction and supplementary exercises to better integrate procedural and metacognitive knowledge types, as well as to emphasize applying and creating thinking processes. 2026
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