E-commerce Adoption in Distribution: An Empirical Study on Household Businesses in Food and Beverage Industry

NGUYEN, Xuan Truong,NGUYEN, Thai Ha,DANG, Huynh Phuong,PHAM, Thi Lan Phuong,BUI, Thi Thanh,TRAN, Nhat Minh,HUYNH, Tri An,NGUYEN, Nam Phong Korea Distribution Science Association 2022 유통과학연구 Vol.20 No.2

Purpose: This study aims to identify factors affecting the adoption of e-commerce by household businesses in Vietnam's food and beverage industry. Research design, data and methodology: The integrated TAM and TOE frameworks and ten hypotheses were developed to test the relationship between relevant factors. A cross-sectional survey was conducted to collect valid data from 992 respondents who run F&B household businesses in Vietnam. Results: The empirical research results confirm all proposed hypotheses that e-commerce adoption is affected by the perceived usefulness, the perceived ease of use, vendor support partners, social expectancy, competitive pressure, subjective norm, and household resources. Meanwhile, technical readiness, environment readiness, and organization readiness are intermediate variables that influence the implementation of e-commerce in food and beverage distribution. Conclusions: The findings suggest effective orientations to foster the food and beverage e-trading practice for household businesses in developing countries. Accordingly, to encourage private household businesses to adopt e-commerce, it is necessary to focus on improving business resources, technology readiness, environment readiness, and organization readiness through raising awareness of usefulness, benefits, perceived ease of use, and increased support of vendor partners. Future research can focus on improving the efficiency of e-commerce applications in F&B distribution for both household businesses and larger-scale enterprises.

An IF Bandpass Filter Based on a Low Distortion Transconductor

Ha Le-Thai,Huy-Hieu Nguyen,Hoai-Nam Nguyen,Hong-Soon Cho,Jeong-Seon Lee,Sang-Gug Lee IEEE 2010 IEEE journal of solid-state circuits Vol.45 No.11

<P>In this paper, a linearity improvement technique is proposed for a low-distortion G<SUB>m</SUB>-C bandpass filter operating in high IF ranges. The proposed transconductor eliminates G<SUB>m</SUB>' value at the output by superposing the opposite non-linear behaviors of two differential structures in parallel. For the bandpass filter, instead of conventional biquad structure, a resonant-coupling structure is adopted for a flat frequency response which is insensitive to process and temperature variations. Fabricated in 65 nm CMOS process, the implemented 80 MHz bandpass filter shows a flat bandpass characteristic with 0.1 dB ripple, third-order harmonic rejection of 27 dB, IIP3 of -2 dBm, and NF of 21.5 dB, while consuming 11 mA from 1.2-V supply. The filter occupies the chip size of 0.5 × 0.5 mm<SUP>2</SUP>.</P>

E-commerce Adoption in Distribution: An Empirical Study on Household Businesses in Food and Beverage Industry

Xuan Truong NGUYEN,Thai Ha NGUYEN,Huynh Phuong DANG,Thi Lan Phuong PHAM,Thi Thanh BUI,Nhat Minh TRAN,Tri An HUYNH,Nam Phong NGUYEN 한국유통과학회 2022 유통과학연구 Vol.20 No.2

Purpose: This study aims to identify factors affecting the adoption of e-commerce by household businesses in Vietnam s food and beverage industry. Research design, data and methodology: The integrated TAM and TOE frameworks and ten hypotheses were developed to test the relationship between relevant factors. A cross-sectional survey was conducted to collect valid data from 992 respondents who run F&B household businesses in Vietnam. Results: The empirical research results confirm all proposed hypotheses that e-commerce adoption is affected by the perceived usefulness, the perceived ease of use, vendor support partners, social expectancy, competitive pressure, subjective norm, and household resources. Meanwhile, technical readiness, environment readiness, and organization readiness are intermediate variables that influence the implementation of e-commerce in food and beverage distribution. Conclusions: The findings suggest effective orientations to foster the food and beverage e-trading practice for household businesses in developing countries. Accordingly, to encourage private household businesses to adopt e-commerce, it is necessary to focus on improving business resources, technology readiness, environment readiness, and organization readiness through raising awareness of usefulness, benefits, perceived ease of use, and increased support of vendor partners. Future research can focus on improving the efficiency of e-commerce applications in F&B distribution for both household businesses and larger-scale enterprises.

Synthesis of a Novel Fluorescent Cyanide Chemosensor Based on Photoswitching Poly(pyrene-1-ylmethyl-methacrylate-randommethyl methacrylate-random-methacrylate spirooxazine)

Hoan Minh Tran,Tam Huu Nguyen,Viet Quoc Nguyen,Phuc Huynh Tran,Linh Duy Thai,Thuy Thu Truong,Le-Thu T. Nguyen,Ha Tran Nguyen 한국고분자학회 2019 Macromolecular Research Vol.27 No.1

The photoswitching poly(pyrene-1-ylmethyl-methacrylate-random-methyl methacrylate-random-methacrylate spirooxazine) was synthesized via atom transfer radical polymerization and characterized by proton nuclear magnetic resonance (1H NMR), gel permeation chromatography (GPC), Fourier transform infrared (FTIR) spectroscopy, UV-visible spectroscopy, and differential scanning calorimetry (DSC). The obtained copolymer exhibited the capability of erasable and rewritable photoimaging, making it a potential candidate for optical data storage materials. Moreover, the copolymer also showed the sensing ability for cyanide anions effect in aqueous solutions.

Multi Frequencies Control in Multi-Microgrid System Using Inversed Frequency Droop Control

Thai-Thanh Nguyen(느웬타이탄),Hyeong-Jun Yoo(유형준),Hak-Man Kim(김학만),Byung Ha Lee(이병하) 대한전기학회 2016 대한전기학회 학술대회 논문집 Vol.2016 No.11

A Comparison of Analysis of Subsynchronous Resonance based on Eigenvalue Analysis and Frequency Scanning

Thai-Thanh Nguyen(느웬타이탄),Ho-Ik Son(손호익),Hak-Man Kim(김학만),Byeong-Ha Lee(이병하),Jung-Hoon Shin(신정훈) 대한전기학회 2015 대한전기학회 학술대회 논문집 Vol.2015 No.4

Understanding the COVID-19 Infodemic: Analyzing User-Generated Online Information During a COVID-19 Outbreak in Vietnam

Ha-Linh Quach,Thai Quang Pham,Ngoc-Anh Hoang,Dinh Cong Phung,Viet-Cuong Nguyen,Son Hong Le,Thanh Cong Le,Dang Hai Le,Anh Duc Dang,Duong Nhu Tran,Nghia Duy Ngu,Florian Vogt,Cong-Khanh Nguyen 대한의료정보학회 2022 Healthcare Informatics Research Vol.28 No.4

Objectives: Online misinformation has reached unprecedented levels during the coronavirus disease 2019 (COVID-19) pandemic. This study analyzed the magnitude and sentiment dynamics of misinformation and unverified information about public health interventions during a COVID-19 outbreak in Da Nang, Vietnam, between July and September 2020. Methods: We analyzed user-generated online information about five public health interventions during the Da Nang outbreak. We compared the volume, source, sentiment polarity, and engagements of online posts before, during, and after the outbreak using negative binomial and logistic regression, and assessed the content validity of the 500 most influential posts. Results: Most of the 54,528 online posts included were generated during the outbreak (n = 46,035; 84.42%) and by online newspapers (n = 32,034; 58.75%). Among the 500 most influential posts, 316 (63.20%) contained genuine information, 10 (2.00%) contained misinformation, 152 (30.40%) were non-factual opinions, and 22 (4.40%) contained unverifiable information. All misinformation posts were made during the outbreak, mostly on social media, and were predominantly negative. Higher levels of engagement were observed for information that was unverifiable (incidence relative risk [IRR] = 2.83; 95% confidence interval [CI], 1.33–0.62), posted during the outbreak (before: IRR = 0.15; 95% CI, 0.07–0.35; after: IRR = 0.46; 95% CI, 0.34-0.63), and with negative sentiment (IRR = 1.84; 95% CI, 1.23–2.75). Negatively toned posts were more likely to be misinformation (odds ratio [OR] = 9.59; 95% CI, 1.20–76.70) or unverified (OR = 5.03; 95% CI, 1.66–15.24). Conclusions: Misinformation and unverified information during the outbreak showed clustering, with social media being particularly affected. This indepth assessment demonstrates the value of analyzing online “infodemics” to inform public health responses.

베트남 중부지역의 공공행정서비스에 대한 시민만족도 평가연구

하타이탄 ( Thai Thanh Ha ),화이응우옌시두이 ( Nguyen Si Duy Hoai ),김판석 ( Pan Suk Kim ) 한국외국어대학교 동남아연구소 2013 東南亞硏究 Vol.22 No.3

행정서비스에 대한 시민만족도 평가이슈는 그간 베트남 중부지역에 있는 학자, 행정실무자, 정책결정자들에 의해 많이 논의되어 왔기 때문에 시기적으로 적절한 이슈라고 할 수 있다. 본 연구가 활용한 서비스품질모델은 여러 나라의 선행연구에서도 활용된 바 있다. 본 연구는 주요 민원행정서비스(토지대장, 법률문제, 세금정보, 사업등록, 제증명 등)를 이용한 시민고객 703 명을 상대로 설문조사를 실시한 자료에 근거하고 있고 그 자료를 바탕으로 분석하였다. 분 연구가 활용한 분석방법은 요인분석이며, 설문지에 있는 23 개 항목을 중심으로 심도 있는 분석을 하였고, 특히 5 개요인(인프라, 인적자원, 절차와 공식성, 응답과 환류, 행정서비스산출 등)을 중심으로 계량분석을 하였는데, 여러 요인들이 시민만족에 어떠한 영향을 끼치는가를 분석하고, 그 결과를 바탕으로 정책대안을 도출하였다. 효과적인 행정서비스 제공을 위해서는 행정서비스 제공절차와 공식성 등이 보다 높은 수준으로 표준화되어야 하고, 베트남 중부지역에서 행정서비스를 수행하는 공무원들의 역량을 제고하기 위한 광범위한 역량개발 교육훈련도 필요한 것으로 나타났다. 특히 전문적 기술과 윤리의식 제고 등이 필요한 것으로 나타났다. 마지막으로 시민고객만족도 조사결과를 공개하고 그러한 자료에 기초하여 개선책을 집행할 수 있는 혁신팀을 구성하여 추진하는 것이 시급하다고 하겠다. This assessment of citizen satisfaction with the public administration services has been a debated and timely topic for lecturers, practitioners and policy makers in Central Vietnam. The study model was first developed on the basis of previous studies. By conducting the field survey of a total number of 703 citizens who have been using 5 types of “one-stop-shop” public administration services on land certification, legal issues, tax information, business registration and certification, the data has been coded and analyzed. Then the method of factor analysis was used to condense the 23 items on the questionnaires into a smaller, but meaningful, set of 5 factors for further assessment (namely, infrastructure, human resources, procedures and formalities, response and feed-back, and public administration service outputs). With these 5 factors identified by the factor analysis, the quantitative methods were used to measure the impact of such factors on the satisfaction of the citizens who have been using the reformed public administration services. Based on the findings of the research, several suggestions and recommendations were drawn. The formalities and procedures for public administration services have to be standardized in a high quality format. Also, there should be an extensive capacity-building training program for civil servants who work in those public administration services in Central Vietnam so that their professional skills and ethics need to be upgraded over time. Last but not least, there is an urgent need to set up a task force so that corrective action can be taken, based on the publicized results of the annual citizen satisfaction survey.

A novel mathematical modelling for simulating the spread of heavy metals in solid waste landfills

Ngoc Ha Hoang,Anh My Chu,Kim Thai Thi Nguyen,Chi Hieu Le 대한환경공학회 2022 Environmental Engineering Research Vol.27 No.3

Municipal solid waste (MSW) landfills create the environmental pollutions due to problems related to toxins, leachate, and greenhouse gas, which are the growing environmental concerns, especially in developing countries. This paper presents a novel mathematical modelling for simulating the spread of heavy metals in soil layers in the MSW landfills. A new mathematical modelling procedure is studied for deriving the governing equation which describes the time varying concentration of pollutants in the leachate in a 3-dimensional (3D) space of soil layers. A Finite Element Method (FEM) based algorithm is then constructed to solve numerically the governing equation over time in 3D space for effectively analyzing the variation of pollutants concentrations. Finally, the applicability and advantages of the proposed novel method are demonstrated through the case study with soil samples collected from the actual MSW landfill. The successfully developed algorithm can be applied to model and predict the spread of different heavy metals in the MSW landfill sites; and to develop effective solutions and policies for solid waste classification and management, in order to minimise the negative impacts from the potential risk of the toxic heavy metal pollutions, soil contaminations and groundwater pollutions in the areas nearby the MSW landfill.

Bioinformatic identification and expression analysis of the chicken B cell lymphoma (BCL) gene

Van Thai Than,Ha Thi Thanh Tran,Duc Viet Ly,Hoang Vu Dang,Minh Nam Nguyen,Anh Duc Truong 한국유전학회 2019 Genes & Genomics Vol.41 No.10

Background B cell lymphoma (BCL) families play an important role in apoptosis as a growth factor, cell death programming, cytokine expression and immune-related genes expression. Objectives In this study, to investigate the roles of BCLs, we performed genome-wide identification, expression and functional analyses of the BCL family in chicken. Methods Chicken BCLs genes were identified and analyzed by using bioinformatics approach. Expression profiles and Hierarchical cluster analysis of the BCLs genes in different chicken tissues were obtained from the genome-wide RNA-seq in the GEO, and Cluster and Java Treeview, respectively. Results A total of 16 BCLs genes were identified from the chicken genome, which could be further classified into five distinct groups in the phylogenetic tree. On the other hand, the interaction among BCLs proteins and between BCLs proteins with NF-κB subunits are limited, indicating that the remaining the functions of BCLs protein could be investigated in chicken. Moreover, KEGG pathway analysis indicated that BCL gene family was involved in regulation of apoptotic and immune response. Finally, BCL gene family was differentially expressed in chicken tissues, pathogen infection and growth stages of early chicken early embryo. Conclusion This study provides significant insights into the potential functions of BCLs in chicken, including the regulation of apoptosis, cell death and expression of immune-related genes.