PB-NCC: A Popularity-Based Caching Strategy with Number-of-Copies Control in Information-Centric Networks

The Information-Centric Network (ICN), designed for efficient content acquisition and distribution, is a promising candidate architecture for the future Internet. In-network caching in ICN makes it possible to reuse contents and the Name Resolution System (NRS) makes cached contents better serve users. In this paper, we focused on the ICN caching scenario equipped with an NRS, which records the positions of contents cached in ICN. We propose a Popularity-based caching strategy with Number-of-Copies Control (PB-NCC) in this paper. PB-NCC is proposed to solve the problems of unreasonable content distribution and frequent cache replacement in traditional caching strategies in ICN. We examine PB-NCC with a large number of experiments in different topologies and workloads. The simulation results reveal that PB-NCC can improve the cache hit ratio by at least 8.85% and reduce the server load by at least 11.34% compared with other on-path caching strategies, meanwhile maintaining a low network latency.

Learning experiences of pre-clinical medical students in virtual problem-based learning amidst the COVID-19 pandemic

Introduction: Medical schools universally responded by migrating teaching and learning to virtual learning environments (VLE) due to the impact of the COVID-19 pandemic. The use of virtual problem-based learning (PBL) in lieu of face-to-face sessions seems to be an appropriate response, but its effectiveness was understudied. The study compared the learning experiences of pre-clinical medical students at the beginning and completion of the virtual PBL. Methods: The study was conducted at the University of Malaya, a public-funded university in Malaysia. A 12-item questionnaire was developed and validated to assess the learning experiences of students conducting virtual PBL sessions. Principal component analysis and test for internal consistency suggested that the questionnaire is valid and reliable. The questionnaire was administered to pre-clinical students (Year 1 and Year 2) twice: at the beginning and the end of the virtual PBL implementation. Their responses were compared for the domains “learning”, “confidence” and “concern”. Results: 344 pre-clinical students were recruited but only 275 students (80%) responded to both the initial and final questionnaires. Based on the responses, the learning experiences of students generally improved by the completion of the virtual PBL implementation. Students were most convinced that they obtained and understood the information given during the virtual PBL. However, they continued to be worried about passing the clinical examination and content acquisition. Conclusion: The study supports the feasibility of virtual PBL as an acceptable alternative to replace face-to-face PBL during the COVID-19 pandemic.

Assesing teaching assistant programmes as a tool facilitating the learning process of Physiology / Avaliação do modelo de monitoria como ferramenta facilitadora para o processo de aprendizagem em Fisiologia

A teaching assistant programme is an extracurricular activity in which an advanced student (the assistant) is guided and supervised by the lecturer to provide support to the curricular unit. The aim of the present study was to asses the contribution of teaching assistant programmes based on problem cases towards the acquisition of a medicine course content. The study was cross-sectional and involved 153 students divided into two groups: the present and the absent at teaching assistant sessions. All the participants responded to standardised questionnaires that have been used to analyse their perception of content acquisition, their active participation in learning and the contribution of teaching assistant sessions. The results showed that the perception of complete content acquisition among the present group was at 38.4%, while for the absent group only at 29.7%. The negative perception of content acquisition was at 13.6 % for the absent group and at 6.1% for the present group. Within the present group 73.5% of the students studied the topics covered in lectures within two weeks. For the absent group this number fell to 49.4%. In addition, 86% of the present group said that the teaching assistant sessions contributed towards their learning. As the main reason they pointed to the opportunity to answer questions. On the whole, the results suggest that teaching assistant programmes based on problem cases can be effective in facilitating the perception of learning. The reason appears to be a more intense involvement of the participants in a more active study routine.

Digital Storytelling as a Meaningful Learning Strategy in Online Learning

The purpose of this study was to ascertain students' perceptions of the use of digital storytelling as a meaningful learning strategy in an online environment at a senior high school in Indonesia. The case study method was used in this study, which included twenty-eleventh-grade students as participants. The data analyzed in this study come from a student questionnaire, a semi-structured interview, and five-week classroom observation. This qualitative study indicated that students viewed digital storytelling as an instructional method capable of involving them in an active, authentic, and purposeful learning environment. Additionally, digital storytelling enhances students' exposure to a variety of skills and collaborative work portfolios. The study's practical implications for teachers implementing digital storytelling are to allow additional time for content acquisition and comprehensive learning reflection.

Asymmetric transfer and development of temporal-aspectual sentence-final particles in English-Cantonese bilinguals’ L3 Mandarin grammars

Aiming to shed new light on the discussion on transfer at initial stages of third language (L3) acquisition and development at later stages, this article reports on an empirical study of L3 acquisition of Mandarin temporal-aspectual sentence-final particles (SFPs) le, ne and láizhe by English speaking and English-Cantonese bilingual learners, at both low and high proficiency levels. Cantonese is typologically and structurally closer to Mandarin than English is. Our findings show obvious facilitative effects on le by its Cantonese counterpart in English-Cantonese bilingual learners’ L3 Mandarin, which supports the L3 models that advocate the deterministic role of structural similarity in the transfer source selection. A transfer asymmetry is observed between the cases of le and láizhe. No transfer effects are found in the L3 Mandarin data of láizhe, even though it has an equivalent SFP in Cantonese. This discrepancy is argued to be attributable to input factors and misleading forms. Moreover, patterns observed over different proficiency levels indicate that the quality and quantity of input and the register property of a particular SFP can greatly affect initial transfer and later development of L3 acquisition.

Critical Thinking in Algerian Secondary School EFL Classes: Expectations and Reality

The Algerian educational system is competency-based; therefore, it focuses on developing learners’ competencies and skills through a learner-centered methodology that fosters autonomy. To help teachers apply such methodology, the English syllabus designers recommend using Project-Based Learning, active learning, and problem-solving strategies to help learners develop 21st-century skills and communicate effectively, collaborate, and think critically and creatively. However, those methods and strategies are absent in classrooms, and therefore critical thinking is not promoted. In this context, two questions are raised to affirm this hypothesis. (1) To what extent do teachers respect the syllabus designers’ recommendations? (2) Why do teachers avoid using the recommended methods and strategies? To investigate those questions and achieve the aim of this research, the researcher carried out an in-depth quantitative analysis of 30 anonymous classroom observation reports written by a certified English teacher trainer. To address the qualitative aspect of the research, the researcher held a semi-structured interview with the same teacher trainer. The reports that were examined contained 150 comments on teachers’ classroom practices and assessment methodologies. The results showed that English teachers partially respect the syllabus designers’ recommendations. Besides, the teachers’ methods, classroom practices, and assessment approaches are mainly based on direct instruction and language content acquisition rather than on reflective and problem-solving learning; therefore, they are not conducive to implementing and developing learners’ critical thinking. The conclusion drawn from the data analysis of the current research is that teachers’ hesitance to use the recommended pedagogical approach and methods is due to some hindrances faced by teachers, namely classrooms overcrowdedness, the content-based baccalaureate exam and lack of time due to the lengthy English programs.

Critical Thinking in Algerian Secondary School EFL Classes: Expectations and Reality

The Algerian educational system is competency-based; therefore, it focuses on developing learners’ competencies and skills through a learner-centered methodology that fosters autonomy. To help teachers apply such methodology, the English syllabus designers recommend using Project-Based Learning, active learning, and problem-solving strategies to help learners develop 21st-century skills and communicate effectively, collaborate, and think critically and creatively. However, those methods and strategies are absent in classrooms, and therefore critical thinking is not promoted. In this context, two questions are raised to affirm this hypothesis. (1) To what extent do teachers respect the syllabus designers’ recommendations? (2) Why do teachers avoid using the recommended methods and strategies? To investigate those questions and achieve the aim of this research, the researcher carried out an in-depth quantitative analysis of 30 anonymous classroom observation reports written by a certified English teacher trainer. To address the qualitative aspect of the research, the researcher held a semi-structured interview with the same teacher trainer. The reports that were examined contained 150 comments on teachers’ classroom practices and assessment methodologies. The results showed that English teachers partially respect the syllabus designers’ recommendations. Besides, the teachers’ methods, classroom practices, and assessment approaches are mainly based on direct instruction and language content acquisition rather than on reflective and problem-solving learning; therefore, they are not conducive to implementing and developing learners’ critical thinking. The conclusion drawn from the data analysis of the current research is that teachers’ hesitance to use the recommended pedagogical approach and methods is due to some hindrances faced by teachers, namely classrooms overcrowdedness, the content-based baccalaureate exam and lack of time due to the lengthy English programs.

On the Role Played by Project-Based Learning in Teacher Training Online

This work investigates the perceptions on the role played by Project-Based Learning (PBL) in English as a second language (L2 English) participants who are receiving teacher training online. The participants in this study were enrolled in the Psycholinguistic Analysis of English Acquisition module at xxx-removed for blind review. They were given the choice of two projects: (a) an L2 English learner linguistic profile and (b) a grammatical structure analysis and its L2 English teaching application. The participants’ opinions about PBL were then collected in a questionnaire that included the following variables: motivation and attitude towards L2 English learning before and after the project, perception of the development of English language proficiency skills, content acquisition, and other issues related to PBL such as L2 learning reflection; and, autonomy and real language use. They reported having learned by doing and, as a consequence, believed that they had learned autonomously because they were responsible for their own learning. Likewise, they claimed PBL facilitated critical thinking, creativity, language awareness, and professional development through the project completion. They also showed a positive attitude towards the integration of the four language skills and the building of content knowledge by gathering and planning information using authentic resources.

Designing a School Learning Development Environment: Technological Aspects

Nowadays modern education system is at a stage of active transformation. The transition from the old school model to a new one under conditions of uncertainty and rapid changes experienced by all areas in the real world (VUCA-world) calls for revising the role of education and requires new approaches in order to improve the interaction of participants involved in the educational process (teacher and students). The specific of such interaction is to shape a set of cultural techniques which include thinking, multi-positional communication and practical actions. The article presents some aspects of designing a new type of school learning environment, namely, learning and technological development environment. The results of the project activities carried out by the teaching staff of the Educational Complex "Nasha Shkola" (Novosibirsk) whose responsibility was to create such environment is the development of special models. Models represented in this paper deal with the technology of the learning situation construction and they are considered as normative and technological units of educational content acquisition with focus on the teacher’s role as well as on the organization, complex testing and the technology correction which can be done through inter-positional spaces of educational process support.

ICT and gamification experiences with CLIL methodology as innovative resources for the development of competencies in compulsory secondary education

Due to the lack of research in the field of music through CLIL and ICT in Secondary Education in Spain, we propose to merge this subject with an innovative methodology. The general objective is to present a different approach to students in order to increase their motivation for the subject. The specific objectives are to teach music in English by integrating content, cognition and vocabulary through communication and the use of new technologies. This approach makes the design and implementation didactic, audiovisual and multimedia. Cuadernia: digital notebook composed of flash files, videos and audios, and gamification strategies. Quizziz: multiplayer questionnaire of class contents, based on teaching music through a cooperative methodology and gamification, are applied as options with a great educational projection, with information and innovative pedagogical experiences and potential to work together in the classroom with different levels of the subject. The results that follow the Likert scale reflect high student satisfaction with regard to teaching methodology, content acquisition, teacher training, ICT and resources. As a conclusion, of the coincident results between the professor and the students, we would like to implement it in the coming years.