Factors Influencing Adoption of Online Payment via E-Commerce Platforms

In this study, the research group applied the Technology Acceptance Model (TAM) by Davis (1989) to analyze factors influencing customers’ intention to use the online payment via e-commerce platforms as well as to encourage Vietnamese consumers to adapt this means of payment. Besides Perceived Ease of Use and Perceived Usefulness in the original model of Davis (1989), three additional dependent factors (Subjective Norm, Trust, Risk) were added to the model. The new model proposed by the research group aims to give a more well-rounded explanation on Vietnamese consumers’ attitude and intention towards the online payment. Using sample data including 448 consumers in the Northern region of Vietnam, the research group has been able to validate the hypothesis model and prove that independent and dependent variables (Attitude towards Use and Intention to Use) are positively correlated. Among the 5 dependent variables, Subjective Norm is found to be the most significant factor contributing to promote online payment attitude and intention through e-commerce websites of Vietnamese consumers. Keywords: TAM, online payment, online shopping, e-commerce DOI: 10.7176/EJBM/13-8-19 Publication date: April 30th 202

EFL STUDENT’S PROBLEMS WITH PARAGRAPH WRITING AT TAY DO UNIVERSITY, VIETNAM

This paper studied problems in EFL students’ paragraph writing. The research participants were first-year students of English in Tay Do University (TDU). To achieve the desired aims of the current study, the researcher combined both qualitative and quantitative methods, using questionnaires, interviews, and observations as the main instruments. The researcher used the package of social sciences (SPSS) for analysis. Research results showed that the freshmen at TDU often encountered problems in writing paragraphs. These accounted for grammatical structures, vocabulary, and coherence. Basing on the research results, students could recognize their difficulties when writing and find some new ways to overcome them. It is suggested that teachers should find and update some new teaching methods so as to develop students’ paragraph writing skills. Article visualizations

HMU fluorinze mouthwash enhances enamel remineralization: An in vitro study

BACKGROUND: Fluoride therapy has long been used extensively to prevent dental caries. Fluoride appears in variety of dental care products such as mouthrinse, dentifrice, gel, etc. HMU fluorinze is the first mouthwash containing fluoride in Vietnam. AIM: This research was conducted to evaluate the efficacy of HMU Fluorinze mouthwash on remineralizing enamel in laboratory conditions. METHODS: 20 third molars teeth were cleaned and covered with nail polish , except for a 3x3 mm square on their buccal surfaces. These teeth went through two steps: demineralization using Coke and remineralization for 20 days: 1) using standard calcifying solution (control group) and 2) using standard calcifying solution + HMU Fluorinze mouthwash 2 times/day (experimental group). The mineralization index of enamel structure after demineralization and remineralization was assessed by DIAGNOdent pen 2190. RESULTS: The mineralization indexes of the control group and experimental group at baseline were 3.65 ± 0.76 and 3.35 ± 0.64, after demineralization were in turn of 21.78 ± 4.48 and 20.25 ± 2.26; and after remineralization were 6.30 ± 1.03 and 3.90 ± 1.24. The different figures  between the two groups after remineralization shows statistical significance (p<0.01). Group B using HMU fluorinze mouthwash after 20 days did not differ from the original results (p = 0.272), in contrast with the control group (p<0.01). CONCLUSIONS: HMU fluorinze mouthwash has better mineralization effect than standard calcifying solution

The Emergence of Rotavirus G12 and the Prevalence of Enteric Viruses in Hospitalized Pediatric Diarrheal Patients in Southern Vietnam

Diarrhea is a major cause of childhood morbidity and mortality in developing countries, and the majority of infections are of viral etiology. We aimed to compare the etiological prevalence of the major enteric viruses in an urban and a rural setting in southern Vietnam. We simultaneously screened fecal specimens from 362 children in Ho Chi Minh City and Dong Thap province that were hospitalized with acute diarrhea over a 1-month-long period for four viral gastrointestinal pathogens. Rotavirus was the most common pathogen identified, but there was a differential prevalence of rotavirus and norovirus between the urban and rural locations. Furthermore, rotavirus genotyping and phylogenetic analysis again differentiated the genotypes by the sampling location. Our data show a disproportional distribution of enteric viral pathogens in urban and rural locations, and we provide evidence of continual importation of new rotavirus strains into southern Vietnam and report the emergence of rotavirus genotype G12

Yếu tố ảnh hưởng quyết định vay vốn mua nhà ACB quận 10

Nghiên cứu nhằm tìm ra các yếu tố ảnh hưởng đến quyết định vay vốn mua nhà ở của khách hàng cá nhân (KHCN) tại Ngân hàng Thương mại cổ phần (NH TMCP) Á Châu (ACB) khu vực quận 10, TPHCM, bằng việc phân tích 246 phiếu khảo sát hợp lệ, phương pháp kiểm định hồi quy nhị phân được áp dụng. Kết quả cho thấy có 12 yếu tố ảnh hưởng đến quyết định vay vốn mua nhà ở của KHCN tại NH TMCP Á Châu khu vực quận 10, TPHCM được xếp thứ tự như sau: (1) Hiểu biết vay vốn (HBVV), (2) Tình trạng việc làm (TTVL), (3) Số bất động sản sở hữu (SHBDS), (4) Nhóm tham khảo (NTK), (5) Thu nhập (TN), (6) Tài sản thế chấp (TSTC), (7) Trình độ học vấn (TDHV), (8) Giới tính (GT), (9) Quy mô nhân khẩu (QMNK), (10) Giá trị nhà mua (GTNM), (11) Tổng chi tiêu (TCT), (12) Độ tuổi (ĐT). Từ đó, nghiên cứu đề xuất một số hàm ý quản trị để ACB thực hiện cho vay tốt hơn

Description of a new Pselaphodes Westwood (Coleoptera: Staphylinidae: Pselaphinae) from Vietnam

A new species of the genus Pselaphodes Westwood, P. fansipanensis Bekchiev & Yin sp. n., is described from northern Vietnam. The unique modification of the antennomeres 9–10 of the male readily separates the new species from all known congeners. New Pselaphodes species from Vietna

An Autoethnography of an EFL Teacher Stages of Development in Choices of the Best ELT Methodology

This paper attempted to share lived experiences in the teaching career of an EFL teacher in her choices of the best pedagogical methods to be applied in her class. The paper was done under the lens of autoethnography, which was believed to be the most appropriate measure to deal with writing genres such as experiences and narratives in one’s life. The result presented three important stages that an average EFL teacher might undergo. It is hoped that the paper could provide more insights into the teaching life and experiences of the typical EFL teacher and thus be beneficial to novice colleagues in perfecting their profession. Keywords: autoethnography, ETL methodology, EFL teachers, professional development DOI: 10.7176/JEP/14-21-01 Publication date:July 31st 202

Multi-period Linearized Optimal Power Flow Model Incorporating Transmission Losses and Thyristor Controlled Series Compensators

This paper presents multi-period linearized optimal power flow (MPLOPF) with the consideration of transmission network losses and Thyristor Controlled Series Compensators (TCSC). The transmission losses are represented using piecewise linear approximation based on line flows. In addition, the nonlinearity due to the impedance variation of transmission line with TCSC is linearized deploying the big-M based complementary constraints. The proposed model in this paper is evaluated using PJM 5-bus test system. The impact of a variety of factors, for instance, the number of linear blocks, the location of TCSC and the ramp rate constraints on the power output and locational marginal price (LMP) is also analyzed using this proposed model

Systematic and zoogeographical characteristics of the oribatid mite fauna (Acari: Oribatida) of Vietnam

The article is a synthesis of the studies on oribatid mites carried out in Vietnam during the period of 1980-2013, and is based on the oribatid materials obtained throughout the country. The oribatid mite fauna (Acari: Oribatida) of Vietnam is diversified, and has high specialization. It is diverse by the number of superfamilies, families, genera and species recorded. However, the number of genera per family, as well as the number of species and subspecies per genus, is not high. 43.75% and 37.50% of the total 64 families and subfamilies consist of one and of 2-3 genera, respectively. The only one family Oppiidae Grandjean, 1954 consists of 23 genera. The majority of the genera, 68.10% of the total, are represented by one species. The only two genera are represented by more than 10 species, namely Galumna Heyden, 1826 and Pergalumna Grandjean, 1936, with 13 and 11 species, respectively. The main zoogeographical characteristics of the oribatid mite fauna of Vietnam are the Oriental species, representing 60.30% of the total number. It also includes the elements of the Palaearctic – Oriental (12.2%), the Cosmopolitan (10.6%), the Afrotropical (Ethiopical) – Oriental (6.9%), the Australian – Oriental (5.0%), the Neotropical – Oriental (3.8%), the Nearctic – Oriental (0.9%), and the Pacific - Oriental (0.3%).Để đánh giá cấu trúc phân loại và đặc điểm địa động vật của khu hệ ve giáp Việt Nam (Acari: Oribatida), trên cơ sở mẫu vật nghiên cứu thu từ toàn lãnh thổ quốc gia, công trình đã tổng hợp và phân tích các kết quả nghiên cứu về ve giáp trong giai đoạn 1980-2013. Khu hệ động vật ve giáp Việt Nam có tính chuyên biệt cao, và rất đa dạng về số lượng họ, giống và loài xác định được. Tuy nhiên số lượng giống trong 1 họ, cũng như số lượng loài trong 1 giống lại không cao. 43,75% và 37,50% của 64 họ và phân họ, tương ứng chỉ xác định được có 2 và 3 giống. Duy nhất có họ Oppiidae Grandjean, 1954 ghi nhận được 23 giống. 68,10% tổng số giống, chỉ xác định được 1 loài. Duy nhất có 2 giống ghi nhận được hơn 10 loài, là Galumna Heyden, 1826 và Pergalumna Grandjean, 1936, tương ứng có 13 và 11 loài. Đặc điểm địa động vật cơ bản của khu hệ ve giáp Việt Nam là tính chất Đông phương (Oriental), với 60,30% tổng số loài xác định được. Tính chất địa động vật của nó còn bao gồm các yếu tố sau: Cổ bắc - Đông phương (Palaearctic-Oriental, 12,2% tổng số loài xác định được), Toàn cầu (Cosmopolite, 10,6%), Nhiệt đới Phi châu - Đông phương (Afrotropical (Ethiopical)-Oriental, 6,9%), Úc châu - Đông phương (Australian-Oriental, 5,0%), Tân nhiệt đới - Đông phương (Neotropical-Oriental, 3.8%), Vùng cực - Đông phương (Nearctic-Oriental, 0.9%), và Thái Bình Dương - Đông phương (Pacific-Oriental, 0,3%)

Primary hepatic neuroendocrine tumor

Primary hepatic neuroendocrine tumor (PHNET) is a rare type of neuroendocrine tumor (NET) that is also a primary hepatic tumor. Patients are present with almost no specific clinical symptoms and typically present with negative test results and atypical imaging characteristics; therefore, the differentiation of PHNET from other types of primary hepatic masses can be very difficult. In this article, we describe a case of PHNET that mimicked a liver helminth infection in a 57-year-old man. The diagnosis of PHNET in this patient was challenging, and the final diagnosis was based on imaging, histopathology features, and long-term follow-up