Molecular Kondo effect in flat-band lattices

The Kondo effect of a single magnetic impurity embedded in the Lieb lattice is studied by the numerical renormalization group. When the band flatness is present in the local density of states, it quenches the participation of all dispersive electrons in the Kondo singlet formation, and reduces the many-body Kondo problem to a two-electron molecular Kondo problem. The two-electron analog of the many-body Kondo singlet, a quantum entanglement of two spins, is stable at low temperature, and the impurity contributions to thermodynamical and dynamical quantities are qualitatively different from that obtained in the conventional Kondo effect in systems without flat bands. The existence conditions of the molecular Kondo effect in narrow band systems are also discussed

APPLYING THE CASE METHOD IN TEACHING THE DEPARTMENT OF DEFENSE AND SECURITY EDUCATION AT THAI NGUYEN HIGH SCHOOL, VIETNAM

The case method is a teaching method based on real-life events that have happened or are happening. This method is based on constructivist theory and geared toward the target: education as preparation for solving life situations. Learning through solving situations helps students actively and strategically receive knowledge, flexibly apply knowledge and skills, and develop problem-solving abilities. By observing, interviewing, and experimenting, the article has developed a process of organizing case teaching and applied it in teaching National Defense and Security Education at Thai Nguyen High School, Vietnam. Initial results show that the percentage of students interested in the lesson is high (85%). That shows that the effectiveness of the method is feasible and creates a basis for continuing to use this teaching method in practice.  Article visualizations

Surveying Causes Affecting English Learning Of Non- Special Students

Learning English has created many difficulties for non-English major students, especially final year students. The article investigates the causes affecting the English language learning of a group of final year non-English major students at Tan Trao University, and proposes some solutions to overcome these difficulties.Tan Trao University in Tuyen Quang, Viet Na

How Can Students' English Speech Skill Be Improved?

One of the most crucial language abilities is the ability to speak English, particularly in the business. However, speaking abilities are still relatively poor among students in general and pedagogy students in particular. The essay will give ideas to enhance the standard of teaching and learning in schools and will discuss the current state of English learning among students in an effort to at least partially address these inadequacies

Some Solutions to Help Students Enjoy Learning English More

When teaching a large class of students, the teacher's biggest concern is which method to use to partially satisfy the learning needs of the majority of students. Each class has its unique characteristics, different learning needs, and the same level of students between classes at Tan Trao University. Some methods work well for one class, but not for another. This concern becomes much greater when the level of the student and the level of the curriculum has quite a big difference. Teachers often have to add the function of "curriculum designer" for a particular class. In addition to teaching according to the school's general curriculum, teachers must prepare more types of exercises and support activities to help students become more interested in learning and learn English more effectively. In this research paper, the writer of this article would like to mention some solutions that I have applied to students of Kindergarten Class C K8 and their feedback on my solution

Object-Oriented Approach: Applying ISO 21001 at Vietnamese Higher Education Institutions

To evaluate whether an educational institution has quality or not, requires standards that reflect all the requirements of the complex relationships operating within the educational institution. At the same time, this standard must be recognized by all nations for it to apply widely. It is in this context that the ISO 21001:2018 series of standards was published. This standard mentioned three areas of activities that an educational organization must pay attention to: training, scientific research, and community service. They are also the main activities that the educational accreditation standards refer to. To meet the requirement of quality guarantee and enhancement, a higher education institution has to apply quality assurance norms in general and quality criteria on management systems. Putting the ISO 21001 quality standard into practice is the choice of Vietnamese educational institutions to ensure they meet the requirements for improving management system quality. There are a set of quality system standards for educational organizations to satisfy their specific needs. Not following the traditional approach as they apply other ISO standard systems, Vietnamese educational institutions have chosen an object-base approach, where the beneficiaries are related to the management system of the university. They then approach the PDCA cycle to build and implement an ISO 21001 quality management system. We found that, according to this orientation, the implementation processes might be ensured given that the quality thresholds set by the university are met in order to satisfy the demands of the learners and related stakeholders. The paper aims to analyze the approach of Vietnamese educational institutions in implementing ISO 21001 standards, and at the same time identify advantages and disadvantages in developing policies in the quality management system at educational institutions. The paper also gives recommendations that can be adjusted by management at other higher education institutions to improve quality assurance activities towards sustainable development. Keywords: ISO 21001:2018, quality assurance, quality management system, PDCA (Plan-Do-Check-Act), sustainable developmen

Some Impact of the English Competence Assessment Test Based on Output Standards on English Teaching at Tan Trao University

The standardized English proficiency assessment has yielded significant and positive impacts on the English teaching and learning processes at Tan Trao University. This assessment not only serves as a tool to evaluate students' English proficiency but also constitutes an integral component of the educational process, encompassing curriculum design and instructional methodologies. One of the paramount effects of this assessment is the establishment of clear standards regarding proficiency levels and requisite skills. This initiative provides educators and students with a precise understanding of the competencies required for English language acquisition. Consequently, the university can devise tailored language programs that ensure students are equipped with the necessary skills to thrive in academic and professional environments. Furthermore, the assessment instills a sense of pressure on students as they prepare and engage in a high-stakes testing environment. However, this pressure serves as a motivator for students to enhance their individual English proficiency. Consequently, students are propelled towards autonomy and responsibility in their English language learning endeavors, whether through supplemental coursework or independent study. the assessment fosters improvements in the quality of English language instruction at the university. Educators must possess comprehensive knowledge of the assessment's content and requisite skills, prompting them to explore and implement effective pedagogical strategies. This results in a diversification of teaching methodologies, ranging from the utilization of extensive learning resources to the organization of practical activities and classroom discussions.&nbsp

Utilizing Visual Stimuli to Foster Engagement Among English Speaking Skill Learners During Instructional Sessions

The utilization of imagery proves highly effective in stimulating interest and fostering motivation for learners during the process of honing English speaking skills. Through this approach, not only does it facilitate learners in easily conceptualizing and comprehending concepts visually, but it also provides a platform for them to discuss and articulate ideas with confidence and creativity. Imagery serves as a bridge between language and real-life experiences, thereby igniting learners' passion and curiosity, aiding in their rapid and effective progress in language acquisition. In the journey of refining English speaking skills, imagery transcends mere static pictures to become gateways to myriad worlds. When educators incorporate images into the classroom, they bring not only pictures but also emotions, stories, and even dreams. Each detail within an image serves as a key, unlocking the door to imagination, enabling learners to step into a rich world where language extends beyond words on paper to vibrant images within the mind. Through the integration of imagery, the learning process becomes vivid and captivating, transforming each lesson into an adventure, a voyage filled with exploration and anticipation.&nbsp

Étude acoustique des segments dans les séquences consonantiques du vietnamien

National audienceIn this paper, we study the acoustic realization of Vietnamese final stops (/p/ /t/ /k/) and nasals (/m/ /n/), often unreleased, in the consonant sequences, starting from the corpus of 140 monosyllabic and dissyllabic items. This is the first stage of discovering the responsible factors explaining for the difficulty of producing the French consonant clusters faced by Vietnamese leaner