Keterite Cu2ZnSnS4 (CZTS) thin films were fabricated by spray pyrolysis deposition using aqueous precursor solutions with and without the addition of HCl. The effects of HCl on the crystallinity, morphology and photovoltaic properties of CZTS thin films were investigated. The results showed that the presence of HCl had significant effects on the crystal growth, grain size, and surface morphology of the fabricated CZTS thin films resulting in the improvement of the photovoltaic properties of the solar cell.
In this paper, we present p-adaptive meshing algorithms (p-refinement and unrefinement) for triangular finite element meshes. The algorithms are designed to keep the computation cost low, and the neighboring elements are not too different in degree. In addition, we can prove that if we start with an admissible mesh, then each element can be refined at most once using the proposed algorithms. This is important because after a p-refinement there is no way to estimate its error without resolving the whole problem.
This research work aims at developing a logistic regression based data classification model. This model method is developed in Excel VBA to ease its practical implementations. The newly developed program has been tested with two basic data classification tasks.
In this study, the raw quail eggshell powder (RQEP) was utilized as a cheap and environmentally friendly adsorbent to remove methylene blue (MB) from aqueous media under different conditions. The morphology of the prepared adsorbent was determined by scanning electron microscopy. The Langmuir and Freundlich isotherm models were used to model the adsorption data. The obtained results showed that the adsorption of MB on RQEP was well-fitted with the Freundlich model. The optimal conditions for the MB adsorption were also established. The RQEP material has been shown to be effective in MB treatment in aqueous solution with a maximum adsorption capacity of 11.47mg/g.
Yasunari Kawabata (1899 - 1972), is a remarkable talent in the art of expression and the richness of genres and themes, and ideas in modern Japanese literature. He was born and raised in the country's comprehensive renewal of the country from economy, politics, and society to culture, Kawabata was dominated by Western liberal and democratic ideas. This has contributed to creating a new look for Japanese literature: young, rich, and bold. It can be seen that modernism largely influenced Kawabata's composition, particularly in the short story genre. However, he is not only a modern writer but also a traditional writer. The combination of East-West flows in his writing underground produces created literary masterpieces in which the modern element also carries very distinct personality traits. Therefore, learning about Modernity in some of Kawabata's short stories is a research way that we are very interested in contributing to deciphering some of the success of a writer.
In the era of technology, digital transformation trend has made a great impact on higher education in both international institutes and universities in Vietnam. Especially, recently a few digitalized universities in Vietnam have been acknowledged by the Times Higher Education (THE) Impact Rankings. Among Vietnamese Universities is Duy Tan University ranked in the top 500 with the position 401-500 by THE in 2022, and one of a few world-class universities in Vietnam. The great achievement that DTU has got is due to the flexibility in employing digital transformation to meet the educational requirements during the Covid 19 pandemic. As a result, for the last two school years DTU assured the rate of graduates on schedule despite the severe pandemic. Digitalization is one of many crucial factors that helps Duy Tan University get such a high ranking. In order to help readers comprehend the digitalization for higher education, the study focuses on the benefits and challenges that digital transformation has brought in higher education through the survey of 154 English-majored students and 30 lecturers at Faculty of English, Duy Tan University. In addition, possible solutions to challenges are suggested so that other higher education institutes can get valuable lessons in digital transformation. It is hoped that digitalization for higher education becomes more and more popular and learners can get its benefits more easily.
Spanning approximately ten years, the integration of Problem/Project-based Learning approach through three modules in the curriculum in all faculties at Duy Tan University has generally been perceived as beneficial to the undergraduates in a range of areas; this initiation has also driven a large number of researches which are concerned with the effectiveness of this student-centered approach. In the same direction, this study was aimed to contribute to this growing body of literature; it explored the key stake-holders’ perceptions of the benefits and challenges of implementing PBL in ESP classes at DTU. Data were obtained from the questionnaire distributed to the students from three faculties (N = 264) and the interviews with teachers of English from the Faculty of English (N = 4). The major findings indicated a generally positive attitude of the students to the benefits of PBL in all the areas investigated; most of these advantages were agreed on and justified by the lecturers interviewed. With respect to the challenges, the opinions of the two groups were similar in some and different in others. The qualitative data also suggested immediate measures so as to enhance the strengths of this approach.
Conversation - the verbal communication between people is indispensable in daily life. However, interlocutors cannot always understand all the utterances during their conversations because of some trouble sources causing communication breakdown. Repairing the trouble sources is neccessary for the interlocutors to get an effective conversation. With the aim of discovering the main grammatical structures and their parts of speech of other-repair in English, data for the investigation is 262 extracts of 23 English film conversations containing other-repair. The result shows that hearers (H) in English film conversations (EFCs) repaired 05 syntactic components such as noun, verb, adjective, clause, preposition.
The study aims to identify the influencing factors on adopting of accounting software in hotels in Da Nang, including perceived value, hotel readiness, cost, competitive pressure and risk of application. These factors are very important in determining the impact of the accounting software's adoption or the improvement of the software's better functionality. This study which included a 5-point Likert-scale questionnaire, consisting of 20 items divided into 5 sections was designed. A total of 200 questionnaires were distributed to professionals, managers and accountants in hotels in Da Nang city, one of the major cities of Vietnam, and the percentage of answer is 100%. The research results show that the variables of hotel availability, cost and competition pressure are statistically significant greatly influence on the adoption of accounting software. The contribution of the research is the basis for improvements in accounting software products that meet the hotel's requirements, from which the owner will agree to accept the use of such accounting software for an accountant’s work. Agreeing to accept the use of accounting software or upgrade the features of the accounting software will better meet the accounting's work, more in line with the current development and integration trend.
Since the COVID-19 outbreak, there have been studies showing the impact of the disease on other respiratory diseases, leading to an impact on prevention and treatment. Therefore, it is necessary to analyze data on disease patterns and hospital drug lists in order to have data as a basis for adjustment for the periods during and after the epidemic, and to meet the treatment needs that may change. Methods: In this study, we collected information from the drug supply, treatment activities, drug used and value. Drug categories and ABC analysis were used for drug formulary. ICD-10 (International Classification of Diseases 10th Revision) classification was used to analyze disease pattern. Other supporting data on drug supply activities were also used, contributing to the findings. Results and discussion: The disease pattern represents the intensive professional activities of the respiratory hospital. The disease with the highest proportion is pulmonary tuberculosis. Another respiratory disease accounted for a large proportion is COPD (Chronic obstructive pulmonary disease). The results of drug formulary analysis indicated that the hospital has developed a reasonable drug list, consistent with the disease pattern before the time of the COVID-19 pandemic. Low inventory value indicated that drug planning is close to reality. These data also suggested that further research on supportive regimens for COPD treatment in case of pulmonary disease occurrence, such as COVID-19 is required. Conclusion: This study provides pre-pandemic data to serve as the basis for future comparative studies and to identify further research directions in response to the periods during and after COVID-19. Research data also suggested the potential risks of stockpiling, inventory, as well as increasing the use of domestic drugs may be more proactive in drug supply.
