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Stock Market Prediction: The Application of Text-Mining in Vietnam 股票市场预测:文本挖掘在越南的应用
Pub Date : 2022-04-25 DOI: 10.25073/2588-1108/vnueab.4715
Le Thi Hong Hanh, Nguyen Ngoc Nam, N. T. Linh, Nguyen Linh Diep, Nguyen Ngoc Hai
There are very few studies in Vietnam on the application of text mining in finance and Vietnamese language processing. The origin of this study comes from one of the leading studies on the use of machine learning to analyze text data from 4 well-known online newspapers in Vietnam to forecast the increase, decrease and neutrality of the VN-Index one day in advance. This study used nearly 70,000 articles from four reputable and reliable online newspapers in Vietnam as input data for machine learning models. These were: decision trees, random forests, KNNs and SVMs. After selecting the best model (SVM) and the best dataset (Vietstock), the techniques used to dig deep and refine the findings raised the accuracy to 60.1%. The end result is solid evidence that news about the financial and stock situation in the popular press affects the price movements of the VN-INDEX and the Vietnamese stock market.
在越南,关于文本挖掘在金融和越南语语言处理中的应用的研究很少。本研究的起源来自一项领先的研究,该研究使用机器学习分析越南4家知名在线报纸的文本数据,提前一天预测VN-Index的增减和中性。这项研究使用了越南四家信誉良好、可靠的在线报纸的近7万篇文章作为机器学习模型的输入数据。它们是:决策树、随机森林、knn和支持向量机。在选择最佳模型(SVM)和最佳数据集(Vietstock)后,用于深入挖掘和改进发现的技术将准确率提高到60.1%。最终的结果是确凿的证据,关于金融和股票形势的新闻在大众媒体影响的价格走势vn指数和越南股票市场。
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引用次数: 0
A Comparative Research on Communities of Practice, University Knowledge Exchange and Business Model Changes between the United Kingdom and Vietnamese Agri-tech Start-ups 英国与越南农业科技初创企业的实践社区、大学知识交流和商业模式变化比较研究
Pub Date : 2022-04-25 DOI: 10.25073/2588-1108/vnueab.4723
N. Thuy, Christopher J. Brown, N. H. Giang
The paper explores the expectations that agritech startups in the United Kingdom and Vietnam have of the benefits of Communities of Practice (CoPs), and how CoPs help these businesses to tackle the challenges of business model changes for their growth enhancement. The co-creational collaboration between academics and agritech startups when working together on knowledge/experience-sharing through CoPs is also investigated. The research uses a case-study approach, meetings, interviews, and documentary data to capture the events, actions and changes of attitudes, behaviors, and expectations of eight agritech startups towards their use of CoPs. The research indicates a significant change in the business models of the startups when integrating temporal CoPs. These agritech startups often exploit their existing business models, while exploring a portfolio of new business opportunities that could generate new growth engines. Some of them quickly move into a value creation phase by which they achieve quick-wins and medium-term actions that generate both financial and non-financial business value. The research results may have implications for policymakers and practitioners who want to develop these types of interventions. Businesses in other fields can also better understand the value and potential of temporal COPs and start applying them.
本文探讨了英国和越南的农业科技创业公司对实践社区(cop)的好处的期望,以及cop如何帮助这些企业应对商业模式变化带来的挑战,以促进其增长。学者和农业科技创业公司在通过缔约方会议共同开展知识/经验分享时的共同创造合作也进行了调查。该研究采用案例研究方法、会议、访谈和文献数据来捕捉八家农业科技初创公司对其使用cop的态度、行为和期望的事件、行动和变化。研究表明,当整合时间cop时,创业公司的商业模式发生了显著变化。这些农业科技创业公司通常利用现有的商业模式,同时探索一系列可能产生新的增长引擎的新商机。他们中的一些人很快进入了价值创造阶段,通过这个阶段,他们实现了速胜和中期行动,从而产生了财务和非财务业务价值。研究结果可能对想要发展这类干预措施的政策制定者和实践者有所启示。其他领域的企业也可以更好地理解临时cop的价值和潜力,并开始应用它们。
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引用次数: 0
Policy Recommendations to Enhance Vietnamese SMEs’ Ability to Access Venture Capital 提高越南中小企业获得风险投资能力的政策建议
Pub Date : 2022-04-25 DOI: 10.25073/2588-1108/vnueab.4727
Dam Thi Phuong Thao
Small and medium enterprises, which form a large part of the entity of the domestic private sector, play a vital role in economic growth, socio-economic development and the international integration process. However, SME groups in developing countries are under-developed and face a lot of difficulties in growth due to the absence of sufficient finance. Profoundly, venture capital is typically a suitable and sustainable external source of finance for Vietnamese SMEs with high growth potential. This study provides an overview of the venture capital market and its role in SMEs’ performance in Vietnam. This research also found that one of the reasons why foreign investment funds are not interested in the Vietnamese market is that they have not seen safe and sustainable opportunities for investment. This study not only contributes to the existing literature, because this topic in Vietnam has not received much attention and evidence is not available, but also gives policymakers, in developing countries in general and Vietnam in particular, some recommendations to determine areas of improvement in regulatory and policy aspects enabling increased responsible SME access to venture capital.
中小型企业构成国内私营部门实体的很大一部分,在经济增长、社会经济发展和国际一体化进程中起着至关重要的作用。然而,发展中国家的中小企业集团由于缺乏足够的资金,发展不发达,面临着许多困难。深刻地说,风险资本通常是越南具有高增长潜力的中小企业的合适和可持续的外部融资来源。本研究概述了风险资本市场及其在越南中小企业绩效中的作用。本研究还发现,外国投资基金对越南市场不感兴趣的原因之一是他们没有看到安全和可持续的投资机会。本研究不仅对现有文献有所贡献,因为越南的这一主题没有受到太多关注,也没有证据,而且还为发展中国家的政策制定者,特别是越南的政策制定者提供了一些建议,以确定在监管和政策方面的改进领域,使负责任的中小企业能够获得风险资本。
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引用次数: 0
Why is African Trade so Limited? 为什么非洲贸易如此有限?
Pub Date : 2022-04-25 DOI: 10.25073/2588-1108/vnueab.4766
N. Bao, Antoine Bouët
This paper studies the determinants of the low participation of African countries to international trade. We point out the under-trading status of Africa, then we estimate a gravity equation in order to identify the determinants of trade in general. As we characterize the level of these explanatory variables in Africa as compared to the rest of the world, we identify the main variables behind the low participation of Africa to trade in general. Usual gravity factors play an important role, but we show that non-tariff measures and the quality of infrastructure and institutions are important. Import duties does not significantly impede African exports. We test the impact on African countries’ exports of a counterfactual scenario where infrastructure and institution variables in African countries are changed to the world average and conclude that the most important leverage effect to be expected from investment in infrastructure would be from mobile cellular telephone subscriptions. If we consider only countries where exports are positively affected, this counterfactual exercise implies a change by 31.0% of national exports on average by African country. While this result is interesting it has to be considered with caution since the exact form of the relation between trade and mobile cellular telephone subscriptions is largely unknown.
本文研究了非洲国家国际贸易参与度低的决定因素。我们指出非洲贸易不足的状况,然后我们估计一个重力方程,以确定一般贸易的决定因素。在我们描述非洲与世界其他地区相比这些解释变量的水平时,我们确定了非洲总体上低参与贸易的主要变量。通常的重力因素发挥了重要作用,但我们表明,非关税措施、基础设施和制度的质量也很重要。进口关税并没有严重阻碍非洲的出口。我们测试了一种反事实情景对非洲国家出口的影响,即非洲国家的基础设施和制度变量被改变为世界平均水平,并得出结论,预计基础设施投资最重要的杠杆效应将来自移动电话用户。如果我们只考虑出口受到积极影响的国家,这种反事实的做法意味着非洲国家平均出口的31.0%的变化。虽然这个结果很有趣,但必须谨慎考虑,因为贸易和移动电话用户之间关系的确切形式在很大程度上是未知的。
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引用次数: 0
Digital Transformation Readiness of Electrical Equipment Manufacturing Enterprises in Hanoi 河内市电气设备制造企业数字化转型准备情况
Pub Date : 2022-04-25 DOI: 10.25073/2588-1108/vnueab.4719
Nguyen Thi Thanh Dan, N. Chuong
The study of digital transformation that leads to the implementation of the digital economy is a matter of special concern for businesses around the world. This study systematizes the theoretical basis of digital transformation in manufacturing enterprises and on that basis analyzes the current status and readiness for digital transformation of electrical equipment manufacturers in Hanoi. The analysis results show that electrical equipment manufacturing enterprises in Hanoi are at the beginning of digital transformation. Overall, companies show the highest levels of digital readiness in forward and backward linkages. The study also provides recommendations for businesses in the process of implementing digital transformation and recommendations on the state's macro policies in creating favorable conditions for businesses to successfully implement digital transformation in the future.
对数字化转型的研究导致了数字经济的实施,这是世界各地企业特别关注的问题。本研究系统梳理了制造企业数字化转型的理论基础,并在此基础上分析了河内市电气设备制造商数字化转型的现状和准备情况。分析结果表明,河内市电气设备制造企业正处于数字化转型的初期。总体而言,企业在前向和后向连接方面的数字化准备程度最高。研究还为企业在实施数字化转型过程中提出了建议,并就国家为企业未来成功实施数字化转型创造有利条件的宏观政策提出了建议。
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引用次数: 0
Financial Development and Renewable Energy Consumption - Empirical Evidence in Southeast and East Asian Countries 金融发展与可再生能源消费——东南亚和东亚国家的经验证据
Pub Date : 2022-04-25 DOI: 10.25073/2588-1108/vnueab.4748
Nguyen Van Chien
Climate change is one of the biggest challenges in our times. Climate change is happening such as rising in temperatures and sea level, drought, the destruction of the ozon layer. Climate change is consistent with a higher level of carbon dioxide that negatively affects human health and the economy. To mitigate the climate change, countries must reduce the emissions linked to the human activities in order to protect the earth safe as well as maintain economic growth in the context of sustainable development. In this case, renewable energy consumption is one of the most effective tools in the form of fighting against climate change. The purpose of the study is to evaluate the impact of financial development on renewable energy consumption in six Southeast Asian countries (i.e. Vietnam, Indonesia, Malaysia, Thailand, and the Philippines) and three East Asian countries (i.e. China, Korea, and Japan). Using the generalized least squares method, the research results confirm that financial development has a negative impact on renewable energy consumption. The research results also find negative effects of inflation and urbanization rates on renewable energy use. Finally, economic growth and lending rates have no impact on renewable energy in the East and Southeast Asian countries.
气候变化是我们这个时代最大的挑战之一。气候变化正在发生,如气温和海平面上升,干旱,臭氧层的破坏。气候变化与对人类健康和经济产生负面影响的较高的二氧化碳水平相一致。为了减缓气候变化,各国必须减少与人类活动有关的排放,以保护地球的安全,并在可持续发展的背景下保持经济增长。在这种情况下,可再生能源消费是对抗气候变化的最有效工具之一。本研究的目的是评估金融发展对六个东南亚国家(即越南、印度尼西亚、马来西亚、泰国和菲律宾)和三个东亚国家(即中国、韩国和日本)的可再生能源消费的影响。利用广义最小二乘法,研究结果证实了金融发展对可再生能源消费的负面影响。研究结果还发现通货膨胀率和城市化率对可再生能源使用的负面影响。最后,东亚和东南亚国家的经济增长和贷款利率对可再生能源没有影响。
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引用次数: 0
Research on the Effect of Human Resource Management on Innovation at Vietnam Electricity Corporation 越南电力公司人力资源管理对创新的影响研究
Pub Date : 2022-04-25 DOI: 10.25073/2588-1108/vnueab.4644
Nguyen Ngoc Anh, Dinh Thi My Huong
This research aims to analyse the effect of human resource management on innovation and creativity at Vietnam Electricity Corporation. Data from 765 questionnaires from Vietnam Electricity Corporation were processed through SPSS software and AMOS 21, then descriptive statistics, exploratory factor analysis (EFA), confirmatory factor analysis (CFA), SEM analysis and a Bootstrap test were performed. The result shows that the factors of human resource management that affect innovation at EVN include: Recruitment of employees and training and development and performance appraisal. Of these, training and development is the factor that has the strongest impact on innovation and creativity at EVN. At the same time, the research also proposes some policy implications for managers at Vietnam Electricity Corporation to promote the activity of human resource management and innovation to enhance the efficiency of the corporation’s operation.
本研究旨在分析人力资源管理对越南电力公司创新和创造力的影响。采用SPSS软件和AMOS 21对越南电力公司765份问卷进行数据处理,然后进行描述性统计、探索性因子分析(EFA)、验证性因子分析(CFA)、扫描电镜分析(SEM)和Bootstrap检验。结果表明,影响EVN创新的人力资源管理因素包括:员工招聘与培训发展、绩效考核。其中,培训和发展是对EVN的创新和创造力影响最大的因素。同时,本研究也为越南电力公司的管理者提供了一些政策启示,以促进人力资源管理和创新活动,提高公司的运营效率。
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引用次数: 0
Impacts of E-service Quality on Customer Satisfaction: A Case Study of Lazada 电子服务质量对顾客满意度的影响:以Lazada为例
Pub Date : 2022-04-25 DOI: 10.25073/2588-1108/vnueab.4676
Duong Thi Hoai Nhung, N. Ngan
The most important issue for online shopping providers is how to retain customer satisfaction. To survive and thrive, they must improve their service quality. This study aims at identifying factors that affect Lazada’s customer satisfaction on its e-service quality as a leading e-commerce market in Vietnam. Data was gathered from 220 customers who used Lazada to buy products. The model test indicates four factors that positively influence customer satisfaction in terms of e-service quality at Lazada including web design, security, fulfillment, and customer service. A number of managerial implications are proposed for Lazada and other online shopping providers to improve service quality.
对于网上购物供应商来说,最重要的问题是如何保持顾客的满意度。为了生存和发展,他们必须提高服务质量。本研究旨在确定影响Lazada作为越南领先电子商务市场的电子服务质量的客户满意度的因素。数据来自220名使用Lazada购买产品的客户。模型检验表明,在Lazada的电子服务质量方面,有四个因素正向影响客户满意度,包括网页设计、安全、履行和客户服务。本文对Lazada和其他网上购物提供商提出了一些管理建议,以提高服务质量。
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引用次数: 2
Does Firm Characteristics Affect Foreign Investors’ Transactions? The Evidence from the Vietnam Stock Market 企业特征是否影响外国投资者的交易?来自越南股市的证据
Pub Date : 2022-04-25 DOI: 10.25073/2588-1108/vnueab.4708
Nguyen Phuong Tran Thao, Vũ Thị Thương, Nguyen Thi Hien
This paper aims to examine if firm characteristics had an impact on foreign investors’ decisions on buying and selling Vietnamese listed firms’ stocks between 2015 and 2019. Despite the vast majority of research in the same fields worldwide, answers to this question were not clear. Employing panel data estimation of 222 non-financial firms in the Vietnam stock market, the result of this study indicates that foreign investors have a strong preference for firms with high market capitalization, liquidity, and profitability, whereas they seem to be reluctant to invest in ones with high leverage and price to book values. However, we fail to find clear evidence of the impact of dividend yield on the number of shares bought or sold by foreign investors. Based on these results, this study proposes important policy implications to attract foreign investment in the stock market in Vietnam.
本文旨在检验企业特征是否影响外国投资者在2015年至2019年期间买卖越南上市公司股票的决策。尽管世界范围内在同一领域进行了绝大多数研究,但这个问题的答案并不明确。利用越南股市222家非金融公司的面板数据估计,本研究的结果表明,外国投资者对高市值、高流动性和高盈利能力的公司有强烈的偏好,而他们似乎不愿意投资高杠杆和高市净率的公司。然而,我们没有找到明确的证据表明股息收益率对外国投资者买卖股票数量的影响。基于这些结果,本研究提出了越南股票市场吸引外国投资的重要政策含义。
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引用次数: 0
Event Sponsorship and Brand Loyalty: Mediating Role of Attitude Toward Sponsored Events and Sponsoring Brand 赛事赞助与品牌忠诚度:赞助态度与赞助品牌的中介作用
Pub Date : 2022-04-25 DOI: 10.25073/2588-1108/vnueab.4752
Nguyen Dinh Toan
This research is to investigate the impact of event sponsorship on consumers’ brand loyalty through attitudes toward sponsoring brand and sponsored event. Structural equation modelling (SEM) was conducted to test hypotheses with the survey data of 282 Vietnamese youth who have ever watched and followed the Rap Viet 2020 event. The findings indicated that congruity between event image and sponsoring brand image, self-congruity with sponsoring brand image, and attitude towards sponsored event had a significant positive effect on attitude towards sponsoring brand. Attitude towards sponsoring brand, self-congruity with sponsoring brand image, and self-congruity with event image had a significant positive effect on brand loyalty. Congruity between event image and sponsoring brand image, self-congruity with sponsoring brand image, and self-congruity with event image had a significant positive effect on sponsored event attitude. The congruity between event image and sponsoring brand image, self-congruity with sponsoring brand image influence sponsoring brand loyalty by mediating the effects of event attitude and sponsoring brand attitude. Self-congruity with event image influenced sponsoring brand loyalty by mediating event attitude and sponsoring brand attitude. Based on the research’s empirical analysis, some implications were proposed to help sponsor and sponsee managers on how to improve the effectiveness of sponsorship activities.
本研究旨在透过消费者对赞助品牌及赞助活动的态度,探讨赛事赞助对消费者品牌忠诚度的影响。使用结构方程模型(SEM)对282名曾经观看和关注Rap Viet 2020活动的越南青年的调查数据进行假设检验。研究发现,活动形象与赞助品牌形象的一致性、与赞助品牌形象的自我一致性、对赞助活动的态度对赞助品牌态度有显著的正向影响。对赞助品牌的态度、与赞助品牌形象的自我一致性、与活动形象的自我一致性对品牌忠诚度有显著的正向影响。活动形象与赞助品牌形象的一致性、与赞助品牌形象的自我一致性、与活动形象的自我一致性对赞助活动态度有显著的正向影响。活动形象与赞助品牌形象的一致性、与赞助品牌形象的自我一致性通过中介活动态度和赞助品牌态度的效应影响赞助品牌忠诚度。事件形象自我一致性通过中介事件态度和赞助品牌态度影响赞助品牌忠诚度。在实证分析的基础上,本文提出了一些建议,以帮助赞助商和被赞助商管理者提高赞助活动的有效性。
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引用次数: 0
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VNU JOURNAL OF ECONOMICS AND BUSINESS
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