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Stock price crash risk, liquidity and institutional blockholders: evidence from Vietnam 股价暴跌风险、流动性和机构大股东:来自越南的证据
Pub Date : 2024-02-14 DOI: 10.1108/jed-09-2023-0177
Hang Thu Nguyen, Hao Thi Nhu Nguyen
PurposeThis study examines the influence of stock liquidity on stock price crash risk and the moderating role of institutional blockholders in Vietnam’s stock market.Design/methodology/approachCrash risk is measured by the negative coefficient of skewness of firm-specific weekly returns (NCSKEW) and the down-to-up volatility of firm-specific weekly stock returns (DUVOL). Liquidity is measured by adjusted Amihud illiquidity. The two-stage least squares method is used to address endogeneity issues.FindingsUsing firm-level data from Vietnam, we find that crash risk increases with stock liquidity. The relationship is stronger in firms owned by institutional blockholders. Moreover, intensive selling by institutional blockholders in the future will positively moderate the relationship between liquidity and crash risk.Practical implicationsSince stock liquidity could exacerbate crash risk through institutional blockholder trading, firm managers should avoid bad news accumulation and practice timely information disclosures. Investors should be mindful of the risk associated with liquidity and blockholder trading.Originality/valueWe contribute to the literature by showing that the activities of blockholders could partly explain the relationship between liquidity and crash risk. High liquidity encourages blockholders to exit upon receiving private bad news.
目的 本研究探讨了越南股市中股票流动性对股价暴跌风险的影响以及机构大股东的调节作用。设计/方法/途径 暴跌风险用特定公司每周收益率的负偏度系数(NCSKEW)和特定公司每周股票收益率的上下波动率(DUVOL)来衡量。流动性用调整后的 Amihud 非流动性衡量。使用两阶段最小二乘法来解决内生性问题。研究结果使用越南的公司层面数据,我们发现崩盘风险随着股票流动性的增加而增加。这种关系在机构大股东所有的公司中更为明显。此外,机构大股东在未来的密集抛售将积极缓和流动性与崩盘风险之间的关系。由于股票流动性会通过机构大股东的交易加剧崩盘风险,公司管理者应避免坏消息的积累,并及时进行信息披露。投资者应注意与流动性和大股东交易相关的风险。原创性/价值我们的研究表明,大股东的活动可以部分解释流动性与崩盘风险之间的关系,从而为相关文献做出了贡献。高流动性鼓励大宗交易股东在收到私人坏消息时退出。
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引用次数: 0
Foreign investment and the firm performance in emerging securities market: evidence from Vietnam 新兴证券市场中的外国投资与公司业绩:来自越南的证据
Pub Date : 2024-02-01 DOI: 10.1108/jed-12-2022-0244
Phuong Thi Ly Nguyen, Nha Thanh Huynh, Thanh Thanh Canh Huynh
PurposeThe authors investigate how foreign investment in securities market informs about the future firm performance in emerging markets.Design/methodology/approachThe authors define the independent variable, abnormal foreign investment (AFI) as the residuals of the foreign ownership equation. The authors regress foreign ownership on its first lag and factors and define the residuals as the AFI. The AFI is the over- or under-investment reflecting foreign conscious (clear-purpose) investment, thus better indicating how foreign investment affects firm performance. The dependent variable is Tobin’s q (Q), which represents the firm performance. Then, the authors regress the Tobin’s q next quarters (Qt + k) on the AFI current quarter (AFIt). The authors use a two-step generalized method of moments (GMM) and check endogeneity with the D-GMM model for the regression.FindingsThe results show that the current AFI is positively correlated with the firm performance in each of the next four quarters (the following one year). This positive relationship is pronounced for large firms, firms with no large foreign investors, liquid firms and firms listed in the active market. The results suggest that foreign investment might choose well-productive firms already. Also, the current AFI is significantly positively correlated with stock returns in each of the next three quarters. These results suggest that the AFI is informative up to one-year period.Research limitations/implicationsThe results suggest that foreign investors (most of them are small) in the Vietnamese market might choose well-productive firms already. However, if the large investors have long-term investment in tangible, intangible, human capital and so on, and lead to a significant increase in firms’ performance is still the limitation of this paper.Practical implicationsThe results of this paper may guide investors whose portfolios are composed of stocks with foreign investment.Originality/valueThis paper adds to the literature to enrich the conclusion of a positive relationship between foreign ownership and firm performance.
设计/方法/途径 作者将自变量异常外国投资(AFI)定义为外国所有权方程的残差。作者将外资所有权与其第一滞后期和因素进行回归,并将残差定义为 AFI。AFI 是反映外国有意识(目的明确)投资的过度投资或不足投资,从而更好地说明外国投资如何影响企业绩效。因变量是代表企业绩效的托宾 Q 值(Q)。然后,作者将下一季度的托宾 Q 值(Qt + k)与本季度的 AFI 值(AFIt)进行回归。作者使用了两步广义矩法(GMM),并用 D-GMM 模型检验了回归的内生性。结果结果表明,当前的 AFI 与未来四个季度(接下来的一年)中每个季度的公司业绩都呈正相关。这种正相关关系在大型企业、没有大型外国投资者的企业、流动性强的企业和在活跃市场上市的企业中更为明显。结果表明,外资可能已经选择了效益良好的企业。此外,当前的 AFI 与未来三个季度的股票回报率均呈显著正相关。研究局限性/意义研究结果表明,越南市场上的外国投资者(大部分是小投资者)可能已经选择了效益良好的公司。然而,大型投资者是否在有形、无形、人力资本等方面进行长期投资,并导致公司业绩显著增长,仍是本文的局限性所在。本文的研究结果可为投资组合中包含外资股的投资者提供指导。
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引用次数: 0
Foreign investment and the firm performance in emerging securities market: evidence from Vietnam 新兴证券市场中的外国投资与公司业绩:来自越南的证据
Pub Date : 2024-02-01 DOI: 10.1108/jed-12-2022-0244
Phuong Thi Ly Nguyen, Nha Thanh Huynh, Thanh Thanh Canh Huynh
PurposeThe authors investigate how foreign investment in securities market informs about the future firm performance in emerging markets.Design/methodology/approachThe authors define the independent variable, abnormal foreign investment (AFI) as the residuals of the foreign ownership equation. The authors regress foreign ownership on its first lag and factors and define the residuals as the AFI. The AFI is the over- or under-investment reflecting foreign conscious (clear-purpose) investment, thus better indicating how foreign investment affects firm performance. The dependent variable is Tobin’s q (Q), which represents the firm performance. Then, the authors regress the Tobin’s q next quarters (Qt + k) on the AFI current quarter (AFIt). The authors use a two-step generalized method of moments (GMM) and check endogeneity with the D-GMM model for the regression.FindingsThe results show that the current AFI is positively correlated with the firm performance in each of the next four quarters (the following one year). This positive relationship is pronounced for large firms, firms with no large foreign investors, liquid firms and firms listed in the active market. The results suggest that foreign investment might choose well-productive firms already. Also, the current AFI is significantly positively correlated with stock returns in each of the next three quarters. These results suggest that the AFI is informative up to one-year period.Research limitations/implicationsThe results suggest that foreign investors (most of them are small) in the Vietnamese market might choose well-productive firms already. However, if the large investors have long-term investment in tangible, intangible, human capital and so on, and lead to a significant increase in firms’ performance is still the limitation of this paper.Practical implicationsThe results of this paper may guide investors whose portfolios are composed of stocks with foreign investment.Originality/valueThis paper adds to the literature to enrich the conclusion of a positive relationship between foreign ownership and firm performance.
设计/方法/途径 作者将自变量异常外国投资(AFI)定义为外国所有权方程的残差。作者将外资所有权与其第一滞后期和因素进行回归,并将残差定义为 AFI。AFI 是反映外国有意识(目的明确)投资的过度投资或不足投资,从而更好地说明外国投资如何影响企业绩效。因变量是代表企业绩效的托宾 Q 值(Q)。然后,作者将下一季度的托宾 Q 值(Qt + k)与本季度的 AFI 值(AFIt)进行回归。作者使用了两步广义矩法(GMM),并用 D-GMM 模型检验了回归的内生性。结果结果表明,当前的 AFI 与未来四个季度(接下来的一年)中每个季度的公司业绩都呈正相关。这种正相关关系在大型企业、没有大型外国投资者的企业、流动性强的企业和在活跃市场上市的企业中更为明显。结果表明,外资可能已经选择了效益良好的企业。此外,当前的 AFI 与未来三个季度的股票回报率均呈显著正相关。研究局限性/意义研究结果表明,越南市场上的外国投资者(大部分是小投资者)可能已经选择了效益良好的公司。然而,大型投资者是否在有形、无形、人力资本等方面进行长期投资,并导致公司业绩显著增长,仍是本文的局限性所在。本文的研究结果可为投资组合中包含外资股的投资者提供指导。
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引用次数: 0
Does the COVID-19 pandemic disproportionately affect the poor? Evidence from a six-country survey COVID-19 大流行对穷人的影响是否过大?来自六国调查的证据
Pub Date : 2023-12-22 DOI: 10.1108/jed-06-2023-0107
Hai-Anh Dang, Toan L.D. Huynh, Manh-Hung Nguyen
PurposeThe COVID-19 pandemic has wrought havoc on economies around the world. The purpose of this study is to learn about the distributional impacts of the pandemic.Design/methodology/approachThe authors contribute new theoretical and empirical evidence on the distributional impacts of the pandemic on different income groups in a multicountry setting. The authors analyze rich individual-level survey data covering 6,082 respondents from China, Italy, Japan, South Korea, the United Kingdom and the United States. The results are robust to various econometric models, including Ordinanry Least Squares (OLS), Tobit and ordered probit models with country-fixed effects.FindingsThe authors find that while the outbreak has no impact on household income losses, it results in a 63-percent reduction in the expected own labor income for the second-poorest income quintile. The pandemic impacts are most noticeable for savings, with all the four poorer income quintiles suffering reduced savings ranging between 5 and 7 percent compared to the richest income quintile. The poor are also less likely to change their behaviors regarding immediate prevention measures against COVID-19 and healthy activities. The authors also found countries to exhibit heterogeneous impacts.Social implicationsDesigning tailor-made social protection and health policies to support the poorer income groups in richer and poorer countries can generate multiple positive impacts that help minimize the negative and inequality-enhancing pandemic consequences. These findings are relevant not only for COVID-19 but also for future pandemics.Originality/valueThe authors theoretically and empirically investigate the impacts of the pandemic on poorer income groups, while previous studies mostly offer empirical analyses and focus on other sociodemographic factors. The authors offer a new multicountry analysis of several prevention measures against COVID-19 and specific health activities.
目的 COVID-19 大流行给世界各地的经济造成了严重破坏。本研究的目的是了解大流行病对分配的影响。作者就大流行病在多国环境中对不同收入群体的分配影响提供了新的理论和经验证据。作者分析了来自中国、意大利、日本、韩国、英国和美国的 6,082 名受访者的丰富的个人层面调查数据。研究结果作者发现,虽然疫情对家庭收入损失没有影响,但却导致收入第二高的五分之一人口的预期劳动收入减少了 63%。疫情对储蓄的影响最为明显,与收入最富裕的五分之一人口相比,所有四个收入较差的五分之一人口的储蓄都减少了 5% 到 7%。穷人也不太可能改变他们对 COVID-19 的直接预防措施和健康活动的行为。作者还发现各国表现出了不同的影响。社会影响在较富裕和较贫穷的国家中,制定量身定制的社会保护和健康政策以支持较贫穷的收入群体,可以产生多重积极影响,有助于最大限度地减少大流行病带来的负面影响和加剧不平等的后果。这些发现不仅适用于 COVID-19,也适用于未来的大流行病。原创性/价值作者从理论和经验角度研究了大流行病对较贫穷收入群体的影响,而以往的研究大多提供经验分析,并侧重于其他社会人口因素。作者对针对 COVID-19 的几种预防措施和具体的卫生活动进行了新的多国分析。
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引用次数: 0
Farmers' coping strategies to artisanal small-scale mining activities: welfare improvement or deterioration in Asutifi North District of Ghana? 加纳阿苏蒂菲北区农民对手工小规模采矿活动的应对策略:福利改善还是恶化?
Pub Date : 2023-12-05 DOI: 10.1108/jed-02-2023-0029
F. Mabe, Seiba Issifu, C. Wongnaa
PurposeIn Ghana, legal and illegal artisanal small-scale mining (ASM) activities have attracted the attention of the general populace and academia with varied opinions. This study examined how adopting the coping strategies for ASM operations affected the welfare of farm households.Design/methodology/approachPrimary data were solicited from respondents using a semi-structured questionnaire. This paper used the endogenous treatment effect model to quantitatively estimate whether or not farmers who adopt coping strategies for activities of ASM have improved or deteriorated welfare.FindingsThe results revealed that households adopted coping strategies such as diversification, social networking, land reclamation, borrowing, dependence on the market for food and resettlement in other communities. The endogenous treatment effect model results show that households that adopted land reclamation and social networking had improved welfare regarding consumption expenditure and food security compared to non-adopters. Conversely, diversification was associated with lower consumption expenditures and high food insecurity among adopters.Practical implicationsThis paper recommends that farm households in mining communities form cooperatives and farmer-based organizations (FBOs) to ensure improved access to joint resources for enhanced capacity to cope with ASM-induced shocks. There is a need for government and civil society organizations to encourage and support land reclamation measures.Originality/valueThis paper covers a broader perspective and deploys more than one welfare proxy, which has not been considered before in previous studies.
在加纳,合法和非法的手工小规模采矿活动引起了普通民众和学术界的注意,意见不一。本研究旨在探讨农业生产作业的因应策略对农户福利的影响。设计/方法/方法使用半结构化问卷向受访者征求主要数据。本文采用内源性治疗效果模型,定量评估农民采取ASM活动应对策略后,其福利是改善还是恶化。结果显示,家庭采取了多样化、社交网络、土地开垦、借贷、依赖市场获取食物和在其他社区重新安置等应对策略。内源性治疗效应模型结果表明,采用土地复垦和社交网络的家庭在消费支出和粮食安全方面的福利水平高于未采用土地复垦和社交网络的家庭。相反,多样化与较低的消费支出和采用者的高度粮食不安全有关。本文建议矿业社区的农户组成合作社和农民组织(FBOs),以确保更好地获得联合资源,提高应对asm引发的冲击的能力。政府和民间社会组织有必要鼓励和支持土地复垦措施。原创性/价值这篇论文涵盖了一个更广阔的视角,并部署了多个福利代理,这是以前的研究没有考虑到的。
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引用次数: 0
Mineral rents, conflict, population and economic growth in selected economies: empirical focus on Sub-Saharan Africa 特定经济体的矿产租金、冲突、人口和经济增长:撒哈拉以南非洲的经验重点
Pub Date : 2023-11-17 DOI: 10.1108/jed-04-2023-0075
T. Ajayi
PurposeThis study aims to investigate the effects of mineral rents, conflict and population growth on countries' growth, with a specific interest in 13 selected economies in Sub-Saharan Africa.Design/methodology/approachThis paper uses a combination of research methods: the pooled ordinary least squares (OLS), the fixed effect and the system generalized method of moment (GMM). The consistent estimator (system GMM), which provides the paper's empirical findings, remedies the inherent endogeneity bias in the model formulation. The utilized panel dataset for the study spans from 1980 to 2022.FindingsThe study suggests that mineral rents positively affect countries' growth by about 0.407 percentage points in the short run. The study further demonstrates the long-run negative impacts of population growth rates and prevalence of civil war on economic growth. The empirical work of the study reveals that an increase in the number of international borders within the group promotes mineral conflicts, which impedes economic growth. Evidence from the specification tests performed in the study confirmed the validity of the empirical results.Social implicationsMineral rents, if well managed and conditioned on good institutions, are a blessing to an economy, contrary to the assumptions that mineral resources are a curse. The utilization of mineral rents in Sub-Saharan Africa for economic growth depends on several factors, notably the level of mineral conflicts, population growth rates, institutional factors and the ability to contain civil war, among others.Originality/valueThis study is the first attempt in the post-coronavirus disease 2019 (COVID-19) era to revisit the investigation of the impacts of mineral rents, conflict and population growth rates on the countries' growth while controlling for the potential implications of the qualities of institutions. One of the significant contributions of the study is the identification of high population growth rates as one of the primary drivers of mineral conflicts that impede economic growth in the states with enormous mineral deposits in Sub-Saharan Africa. The crucial inference drawn from the study is that mineral rents positively impact countries' growth, even with inherent institutional challenges, although the results could be better with good institutions.
本研究旨在调查矿产租金、冲突和人口增长对各国经济增长的影响,特别关注撒哈拉以南非洲 13 个选定经济体。本文综合使用了多种研究方法:集合普通最小二乘法(OLS)、固定效应法和系统广义矩法(GMM)。一致估计法(系统广义矩法)提供了本文的实证研究结果,弥补了模型表述中固有的内生性偏差。研究使用的面板数据集时间跨度为 1980 年至 2022 年。研究结果研究表明,矿产租金在短期内对国家经济增长产生了约 0.407 个百分点的积极影响。研究进一步表明,人口增长率和内战的发生率对经济增长有长期的负面影响。研究的实证工作显示,集团内国际边界数量的增加会促进矿产冲突,从而阻碍经济增长。研究中进行的规格检验的证据证实了实证结果的有效性。 社会影响与矿产资源是祸害的假设相反,如果管理得当并以良好的制度为条件,矿产租金是经济的福气。撒哈拉以南非洲如何利用矿产资源促进经济增长取决于多个因素,特别是矿产冲突程度、人口增长率、制度因素和遏制内战的能力等。 原创性/价值本研究是 2019 年后冠状病毒病(COVID-19)时代的首次尝试,旨在重新调查矿产资源租金、冲突和人口增长率对国家经济增长的影响,同时控制制度质量的潜在影响。该研究的重大贡献之一是确定了高人口增长率是矿产冲突的主要驱动因素之一,而矿产冲突阻碍了撒哈拉以南非洲拥有大量矿藏的国家的经济增长。研究得出的重要推论是,矿产租金对国家增长产生积极影响,即使存在固有的体制挑战,但如果有良好的体制,结果可能会更好。
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引用次数: 0
The interrelationship between corruption and the shadow economy: a perspective on FDI and institutional quality 腐败与影子经济的相互关系:FDI与制度质量的视角
Pub Date : 2023-09-29 DOI: 10.1108/jed-03-2023-0044
Giang Ngo Tinh Nguyen, Xianmin Liu
Purpose This study explores the relationship between corruption and shadow economy (SE) by examining the potential links and interactions between these two phenomena to see whether it is a one-way or two-way relationship and a complementarity or substitution linkage. Design/methodology/approach Using a dataset comprised of 145 countries all over the world between 1996 and 2015, the authors apply the simultaneous two-step system generalized method of moments approach to address the research question. Findings The study findings support a positive bidirectional relationship between corruption and SE. As such, this study has provided evidence supporting the complementarity association. In the authors' further analyses, they point out that several factors can moderate this positive bidirectional linkage. In particular, while Foreign Direct Investment (FDI) inflows strengthen it, it is weakened by other institutional factors such as civil liberties and political rights. Finally, by splitting the full sample into three different subsamples and then examining countries at varying stages of economic development, the authors can gain valuable insights into the evolving dynamics of the relationship between corruption and SE. Specifically, while the authors observe that the positive direction of corruption to SE remains unchanged across different nations, they observe that the positive influence of SE on corruption is strongest among developed economies only. Practical implications The study findings provide an important policy implication. This study highlights the synergistic relationship between SE and corruption, indicating that reducing corruption will reduce the size of the SE. Consequently, this reduction in the SE can mitigate the adverse effects of corruption on economic development. Originality/value This paper is among the first empirical studies that critically investigate the interrelationship between SE and corruption. It then explores how this two-way linkage is conditional on some factors, such as economic development levels and institutional quality indicators.
本研究通过考察腐败与影子经济之间的潜在联系和相互作用,探讨腐败与影子经济之间是单向关系还是双向关系,是互补关系还是替代关系。设计/方法/方法使用1996年至2015年全球145个国家的数据集,作者采用同步两步系统广义矩法来解决研究问题。研究结果支持腐败与社会绩效之间的双向正相关关系。因此,本研究提供了支持互补性关联的证据。在作者的进一步分析中,他们指出有几个因素可以调节这种积极的双向联系。特别是,虽然外国直接投资(FDI)的流入加强了它,但它被公民自由和政治权利等其他体制因素削弱了。最后,通过将整个样本分成三个不同的子样本,然后检查处于不同经济发展阶段的国家,作者可以对腐败与社会经济之间关系的演变动态获得有价值的见解。具体来说,虽然作者观察到腐败对东南经济的积极方向在不同国家保持不变,但他们观察到东南经济对腐败的积极影响仅在发达经济体中最为强烈。研究结果提供了重要的政策启示。本研究强调了社企与腐败之间的协同关系,表明减少腐败会减少社企的规模。因此,减少社会经济价值可以减轻腐败对经济发展的不利影响。原创性/价值这篇论文是第一批批判性地研究社企与腐败之间相互关系的实证研究之一。然后探讨了这种双向联系如何取决于某些因素,如经济发展水平和制度质量指标。
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引用次数: 0
Is internal migration a way to cope with weather extremes? Evidence from Egypt 国内移民是应对极端天气的一种方式吗?来自埃及的证据
Pub Date : 2023-08-25 DOI: 10.1108/jed-03-2023-0062
Mohamed Arouri, Adel Ben-Youssef, Cuong Viet Nguyen
PurposeIn this study, the authors examine the push and pull effects of extreme weather events on migration among governorates in Egypt.Design/methodology/approachTo estimate the effect of extreme weather events on internal migration, the authors use migration gravity models and data from the 1996 and 2006 Population and Housing Censuses. The authors measure weather extremes by the number of months in the past 36 months with temperatures or precipitation of a governorate below the 5th percentile and above the 95th percentile of the distribution of monthly temperatures or precipitation of the corresponding governorate during the period 1900–2006.FindingsThis study’s results suggest that high temperatures in the origin area act as a push factor. High-temperature extremes have a positive effect on out-migration. A 1% increase in the number of months with high-temperature extremes in the original governorate results in a 0.1% increase in the number of out-migrants.Originality/valueThis study is one of the first attempts to measure the push and pull effect of weather extremes on migration in Egypt.
在本研究中,作者考察了极端天气事件对埃及各省人口迁移的推拉效应。设计/方法/方法为了估计极端天气事件对国内移民的影响,作者使用了移民重力模型和1996年和2006年人口和住房普查的数据。作者衡量极端天气的方法是,在过去36个月里,一个省份的气温或降水低于1900年至2006年期间相应省份月气温或降水分布的第5百分位数,而高于第95百分位数的月数。这项研究的结果表明,起源地区的高温是一个推动因素。极端高温对外迁有积极影响。在原省份,出现极端高温天气的月数每增加1%,就会导致外迁人口增加0.1%。原创性/价值这项研究是首次尝试衡量极端天气对埃及移民的推拉效应。
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引用次数: 0
Institutional quality and economic growth in Sub-Saharan Africa: a panel data approach 撒哈拉以南非洲的制度质量和经济增长:面板数据方法
Pub Date : 2023-08-22 DOI: 10.1108/jed-11-2022-0231
Mohammed Seid Hussen
Purpose The main purpose of this study is to examine the impact of different dimensions of institutional quality indices on the economic growth of Sub-Saharan African (SSA) countries. Design/methodology/approach The study uses a panel data set of 31 SSA countries from 1991 to 2015 and employs a two-step system-GMM (Generalized Method of Moments) estimation technique. Findings The study's empirical results indicate that investment-promoting and democratic and regulatory institutions have a significant positive effect on economic growth; however, once these institutions are taken into account, conflict-preventing institutions do not have a significant impact on growth. Practical implications The study's findings suggest that countries in the region should continue their institutional reforms to enhance the region's economic growth. Specifically, institutions promoting investment, democracy and regulatory quality are crucial. Originality/value Unlike previous studies that use either composite measures of institutions or a single intuitional indicator in isolation, the present study has employed principal component analysis (PCA) to extract fewer institutional indicators from multivariate institutional indices. Thus, this paper provides important insights into the distinct role of different clusters of institutions in economic growth.
本研究的主要目的是考察制度质量指数的不同维度对撒哈拉以南非洲(SSA)国家经济增长的影响。设计/方法/方法本研究使用1991年至2015年31个SSA国家的面板数据集,并采用两步系统- gmm(广义矩量法)估计技术。研究结果表明,投资促进机制和民主监管机制对经济增长具有显著的正向影响;然而,一旦考虑到这些制度,预防冲突的制度就不会对增长产生重大影响。研究结果表明,该地区各国应继续进行制度改革,以促进该地区的经济增长。具体来说,促进投资、民主和监管质量的制度至关重要。独创性/价值与以往的研究不同,本研究采用主成分分析(PCA)从多变量制度指数中提取较少的制度指标。因此,本文对不同制度集群在经济增长中的独特作用提供了重要的见解。
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引用次数: 0
On the welfare effect of retail electricity subsidy in Vietnam 论越南零售电力补贴的福利效应
Pub Date : 2023-08-01 DOI: 10.1108/jed-02-2023-0034
Lam Do, Thai-Ha Le
Purpose This research investigates how subsidy programs in Vietnam's residential electricity market affect consumers' well-being. Design/methodology/approach Two perspectives are employed: cash transfer and quantity-based subsidy. The effectiveness of cash transfer is measured in three ways: benefit incidence, beneficiary incidence and materiality. The quantity-based subsidy is established under the increasing block rate pricing, with the first two block rates being lower than the marginal cost. To improve the quantity-based subsidy, the research examines the consumer surplus under four proposals. Findings The results show that both types of subsidies are ineffective in supporting the poor. Research limitations/implications In order to achieve a more equal distribution among households, the subsidy program should remove all subsidized blocks and reflect the full marginal cost. Changes should be made to the price structure regarding both marginal price and intervals. Practical implications To mitigate the impact of the quantity-based subsidy, the government should improve the cash transfer by reducing extortion and improving targeting efficiency, especially for poor households living in rented houses. Originality/value This paper is the first to discuss the welfare effect of the electricity subsidy in Vietnam. First, it comprehensively evaluates the cash transfer subsidy in Vietnam. Second, it suggests a modification in the residential electricity tariff.
本研究探讨越南居民电力市场的补贴计划如何影响消费者的福祉。设计/方法/方法采用两种观点:现金转移和基于数量的补贴。现金转移的有效性有三种衡量方式:收益发生率、受益人发生率和重要性。基于数量的补贴是在分段电价递增定价下建立的,前两个分段电价低于边际成本。为了改进基于数量的补贴,本研究考察了四种方案下的消费者剩余。结果表明,两种类型的补贴对贫困人口的支持都是无效的。为了实现家庭间更公平的分配,补贴计划应该取消所有补贴区块并反映全部边际成本。应该对边际价格和间隔的价格结构进行调整。为了减轻数量补贴的影响,政府应该通过减少敲诈勒索和提高目标效率来改善现金转移,特别是对居住在租赁房屋中的贫困家庭。本文首次探讨了越南电力补贴的福利效应。首先,对越南的现金转移补贴进行了综合评价。第二,建议调整居民用电价格。
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Journal of Economics and Development
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