364 research outputs found

    Sustainable Decision Making in The Time of Uncertainty: Does Moral Intelligence Make It Different?

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    Background: The cybersecurity has been pondered as a great concern for professionals, legislators as well as all decision-makers and effectiveness of accounting information system (EAIS) has long been well-acknowledged as the prerequisite organizational management. Against this backdrop, big data analytics capabilities (BDAC) will become a must-have element of any fruitful cybersecurity resolution and organizational EAIS to enable public sector to achieve sustainable decision-making (SDM) in operation within the time of uncertainty. This research aims at investigating the interconnection between BDAC and SDM. It also delves into the mediation mechanism of EAIS and cybersecurity risk management (CRM) in the linkage between BDAC and SDM. Outstandingly, it examines whether the interconnections between these aforementioned components varies resting on specific degree of moral intelligence (MI). Method: The structural equation modeling is employed to investigate the statistical data captured from paper-and-pencil survey circulated to a convenience and snowball sample of 683 respondents in the Southern areas of Vietnam. Additionally, the multi-group analysis is applied to examine the moderating impact of MI. Results: The results analysis substantiates the markedly positive interconnection between BDAC and SDM. Simultaneously, this interconnection is partially mediated by CRM and EAIS. One of the most noteworthy observations is the moderating role of MI as a catalyst in enabling public sector to achieve SDM. Conclusion: The study\u27s findings provide important, realistic, and useful theoretical contributions to the current literature on the issue, as well as beneficial inputs for practitioners. Accordingly, these findings recommend that practitioners and policy-makers can benefit from enhancing BDAC and EAIS as well as implementing CRM, which are proactive measures to achieve SDM. Also increasing MI of accountants as an effective solution to foster the advantages of big data analytics, accounting information system and CRM to succeed in SDM

    Suitability assessment and recommendations for Urban agricultural development: A case study in Cai Rang District, Can Tho City, Viet Nam

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    This study aimed to assess the contributing aspects and design decentralized adaptive models for urban agriculture. The research techniques included data collection, surveying and interviewing farmers, statistical analysis and FAO land suitability assessment techniques. The results show that the model of growing green vegetables, fruits and vegetables outside, together with decorative plants, orchids and raising cattle, is the most effective. Moreover, job-creating models boost income, calm down people, spread joy, supply clean food right away, provide room for greenery, recycle agricultural waste and reduce environmental pollution. The outcome is the foundation for selecting the best foreign investment model for future growth. According to the study's findings, sustainable agricultural options for the area assist people in living better, protecting the environment, and earning more money in the future

    Isolation and identification of phenolic compounds from the leaf extract of Cassia alata L.

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    Cassia alata is one of the most important species of the genus Cassia which is rich in anthraquinones and polyphenols. This plant is used as a medicinal material of which the leaves are known to have laxative and antibiotic properties. In our study, the methanol leaf extract of C. alata showed a significant antibacterial activity against human pathogenic bacteria strains Staphylococcus aureus and Bacillus cereus. The organic layers such as n-hexane, ethyl acetate, and aqueous layers, were prepared by partitioning the methanol extract with n-hexane and ethyl acetate successively.  We successfully isolated and identified the structures of five compounds from C. alata leaves. Their structures were elucidated by MS and NMR spectroscopic methods as well as comparison with literature data. These compounds were determined to be methyl 2,4,6-trihydroxybenzoate (1), kaempferol (2), (-)epiafzelechin (3), kaempferol-3-O-glucoside (4) and kaempferol-3-O-gentiobioside (5). Keywords. Cassia alata L., epiafzelechin, kaempferol, kaempferol-3-O-glucoside, kaempferol-3-O-gentiobioside

    PHÁT TRIỂN DOANH NGHIỆP NHỎ VÀ VỪA TRÊN ĐỊA BÀN TỈNH THỪA THIÊN HUẾ TRONG BỐI CẢNH MỚI

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    Small and medium enterprises (SMEs) are playing a significant role in solving job issues, renewing technology, improving the business environment, and maintaining social stability and economic growth in each locality and country. Research in Thua Thien Hue province shows that, in the period 2017–2021, the development situation of SMEs have many changes. In the early years of the period, SMEs had a positive development with the increase of the indicators of total capital, revenue and profit. However, under the impact of natural disasters and the Covid-19 epidemic, which affected the development of SMEs, the number of businesses decreased, and the state of businesses shutting down took place continuously; Revenue and profit dropped sharply. In the new context, the post-pandemic recovery, the process of accelerating the application of the achievements of the fourth industrial revolution, especially the trend of digital economy development and digital transformation have brought SMEs many advantages and new challenges. On the basis of the analysis and assessment of the development situation of SMEs in Thua Thien Hue province, the study proposes basic solutions to improve the adaptability of SMEs in the new context.Doanh nghiệp nhỏ và vừa (DNNVV) có vai trò không nhỏ trong việc giải quyết việc làm, đổi mới công nghệ, cải tiến môi trường kinh doanh, duy trì ổn định xã hội và tăng trưởng kinh tế của mỗi địa phương và đất nước. Nghiên cứu trên địa bàn tỉnh Thừa Thiên Huế cho thấy, trong giai đoạn 2017–2021, tình hình phát triển của DNNVV có nhiều biến động. Trong những năm đầu của giai đoạn, DNNVV có sự phát triển tích cực với sự gia tăng của các chỉ tiêu về tổng vốn, doanh thu và lợi nhuận. Tuy nhiên, dưới sự tác động của tình hình thiên tai và dịch bệnh Covid – 19, đã ảnh hưởng đến sự phát triển của DNNVV, số lượng doanh nghiệp giảm, tình trạng doanh nghiệp ngừng hoạt động diễn ra liên tục; doanh thu và lợi nhuận giảm mạnh. Trong bối cảnh mới, sự phục hồi sau đại dịch, quá trình đẩy nhanh ứng dụng những thành tựu của cuộc cách mạng công nghiệp lần thứ tư, nhất là xu hướng phát triển kinh tế số và chuyển đổi số đã mang lại cho DNNVV nhiều thuận lợi và nhiều thách thức mới. Trên cơ sở những phân tích và đánh giá thực trạng phát triển của DNNVV trên địa bàn tỉnh Thừa Thiên Huế, nghiên cứu đề xuất những giải pháp cơ bản để nâng cao khả năng thích ứng của DNNVV trong bối cảnh mới

    Effectiveness of fluid viscous damper for steel frame building subjected to earthquake load

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    Since the appearance of the first modern multistories buildings, besides the demand of ensuring the bearing capacity, one of the urgent problems facing the engineer is to do how to design structure to ensure the requirements of normal use such as displacement, motion acceleration within permissible limits. There exist many methods to reduce these response of structure under lateral load. Among these, using fluid viscous damper (FVD) is one of the most applied equipment because of its simplicity. This paper presents the examination of eight-story steel frame structure subjected to seismic load. The FVD system is defined in Etabs with link properties. In each story, four dampers are located in each direction of plan, with two on each side of the center of stiffness of the story. The time history analysis was conducted to study the structure subjected to seimic load collected from the function library of program Etabs. The effect of FVD system was determined by the dynamic response of the building and displacement indexes such as maximum displacement of roof, story drift ratio. The results show that, all the dynamic response characters of structure were decreased significantly when providing the FVD to it

    Ultra high Performance Fiber Reinforced Concrete Panel Subjected to Severe Blast Loading

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    Experimental studies play a crucial role in shedding light on the dynamic behaviour of structures under blast loading. However, high costs and complicated technical requirements, particularly for full-scale structures, are still huge disadvantages to conduct such a series of tests. Hence, the finite element method is much needed to provide supplementary information to previous experiments and to enable further parametric studies without testing. This article presents a numerical investigation carried out to understand the behaviour of ultra high performance fiber reinforced concrete (UHPFRC) panels under severe blast loading. The authors designed a subroutine with eight numbers of solution-dependent state variables, 32 mechanical constants, integrated with the Abaqus program to analyze the dynamic behaviour of UHPFRC against multiple blast impacts, using the Johnson-Holmquist 2 damage model incorporating both the damage and residual strength of the material. The subroutine was validated by comparing the simulation results with test results. For the purpose of estimating the structural response of the UHPFRC panel subjected to blast loading, other studying scenarios were considered by varying input parameters, including the thickness of the panel, stand-off distance, and steel reinforcement bar volume. The variations in deflection, strain, and damage of the UHPFRC panel, as well as the steel reinforcement strain, were also evaluated. Through important obtained results, the UHPFRC panel is strongly recommended for a protective barrier installed in the vicinity of critical infrastructure against severe blast loadin

    Condensation heat transfer of R22, R410A and R32 inside a multiport mini-channel tube

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    In the present study, the heat transfer coefficients are investigated experimentally for condensation of R22, R410A, and R32 inside a horizontal multiport rectangular mini-channel tube. The multiport tube having nine channels in 0.969mm of hydraulic diameter, the experimental measurements were carried out at the fixed saturation temperature of 48oC, by the varying refrigerant mass flux from 50 to 500kg/m2s, and the heat flux range from 3 to 15kW/m2. The test section was a double tube of counter-flow type; the refrigerant was flowed condensation inside the test tube by heat exchange with cooling water flowing in the annular side. The temperature and pressure of refrigerant were measured at the inlet and outlet of the test section, and the surface temperature of tubes was measured. The effect of vapor quality, mass flux and heat flux on condensation characteristics is clarified. The experiment results were compared with the existing heat transfer coefficient correlations, and a new correlation was proposed using the present data with good prediction

    Condensation Heat Transfer of R410A Inside Multiport Minichannels with Different Cross-sectional Geometry

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    Condensation heat transfer of R410a in a multiport mini-channels tubes with different cross-sectional geometry is experimentally investigated. Three tubes with aspect ratio of 0.395, 0.385 and 0.446, and hydraulic diameters of 1.147 mm, 1.135 mm and 0.846 mm with number of channels (7, 11 and 18) are tested in this study. The experimented range of heat flux is from 3 to 15 kW/m2, mass flux from 50 to 500 kg/m2s. The data show that the heat transfer coefficient increases with heat flux, mass flux and vapor quality. A performance comparison was conducted among the 3 tested tubes and it was found out that the number of channels increases heat transfer coefficient significantly at low heat flux and mass flux, while this effect is damped at higher heat/mass flux condition. In addition, it was found that heat transfer in small hydraulic diameter and high aspect ratio channels deteriorated. Possible mechanism to this deterioration is proposed. Finally, a new correlation is developed to predict the heat transfer coefficient of R410a in a multiport mini-channels tube
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