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The mediating role of carbon emissions in the relationship between the board attributes and ESG performance: European evidence 碳排放在董事会属性与ESG绩效关系中的中介作用:欧洲证据
IF 5.2 Q2 BUSINESS Pub Date : 2023-04-04 DOI: 10.1108/emjb-08-2022-0144
Amneh Al Kurdi, Hamzeh Al Amosh, S. F. Khatib
PurposeThis study seeks to investigate the impact of board attributes on environmental, social and governance (ESG) performance, along with exploring the mediating role of carbon emissions in this relationship.Design/methodology/approachTo address this objective, the panel data approach was used to analyze the data were collected from 1,621 European companies from 2017 to 2021.FindingsThis study shows that board gender diversity, audit committee independence, expertise and board meeting attendance help enhance ESG performance. On the contrary, board size and composition do not affect ESG performance. The findings also showed that board gender diversity, audit committee independence, expertise and board meeting attendance are negatively related to carbon emissions performance. However, board size is related positively to carbon emissions performance. This indicates that the larger boards of directors may have diverse experiences that enhance the environmental performance of companies. Furthermore, the finding showed companies that contribute to lowering carbon emissions are more willing to improve their ESG performance. Also, carbon emissions mediate the relationship between the board's attributes and ESG performance.Originality/valueThe study's results have significant implications for firm managers in enhancing the efficiency of board decisions in determining environmental practices that matter to various groups of stakeholders. In addition, this study provides valuable input to regulators and policymakers regarding strengthening the regulations and controlling tools that enhance environmental performance.
目的本研究旨在调查董事会属性对环境、社会和治理(ESG)绩效的影响,并探讨碳排放在这种关系中的中介作用。设计/方法/方法为了实现这一目标,使用小组数据方法分析了2017年至2021年从1621家欧洲公司收集的数据。研究结果表明,董事会性别多样性、审计委员会独立性、专业知识和董事会会议出席率有助于提高ESG绩效。相反,董事会规模和组成并不影响ESG业绩。研究结果还表明,董事会性别多样性、审计委员会独立性、专业知识和董事会会议出席率与碳排放绩效呈负相关。然而,董事会规模与碳排放绩效呈正相关。这表明,规模较大的董事会可能有不同的经验,可以提高公司的环境绩效。此外,研究结果表明,有助于降低碳排放的公司更愿意提高其ESG绩效。此外,碳排放在董事会属性和ESG绩效之间起着中介作用。独创性/价值该研究的结果对企业管理者在提高董事会决策效率方面具有重要意义,以确定对不同利益相关者群体重要的环境实践。此外,这项研究为监管机构和政策制定者提供了宝贵的投入,以加强监管和控制工具,提高环境绩效。
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引用次数: 4
The role of endomarketing in human capital management: a study applied to the Minho Urban Quadrilateral 内部营销在人力资本管理中的作用——基于Minho城市四边形的研究
IF 5.2 Q2 BUSINESS Pub Date : 2023-03-28 DOI: 10.1108/emjb-12-2022-0212
Patrícia Micaela Fernandes, B. Sousa, C. Veloso, Marco Valeri
PurposeThe aim of this paper is to understand the importance of endomarketing in organizations and whether internal strategies are essential in the management of human capital. Especially, it is intended to understand what kind of policies is adopted in the organizations the authors are dealing with, and also the perception that employees have about them.Design/methodology/approachThe methodology adopted combines a quantitative and qualitative approach, based on documents analysis, and the survey and semi-structured interviews with questions alluding to endomarketing. The study was carried out in the (Portuguese) cities belonging to the Minho Quadrilateral, being Braga, Barcelos, Guimarães and Vila Nova de Famalicão, in which a total of five organizations are held.FindingsThe results seem to show that endomarketing has an essential role in human capital management, in particular, to obtain both individual and organizational results, where there is a mutual relationship. Of the 158 respondents that make up the sample, it was concluded that 78.5% considered the intrinsic factors related to well-being and happiness as important as the extrinsic factors related to monetary rewards.Research limitations/implicationsThe manuscript presents insights for internal marketing and human resource management (i.e. motivation and human capital). Based on the rapid and profound technological changes of the early 21st century, the concept of endomarketing emerged stimulated by globalization and by the greater concern to adopt strategies that were able to differentiate organizations in the markets.Originality/valueThis is an interdisciplinary theme, with contributions to both internal marketing and human resource management, bearing in mind to enhancing the value and well-being of organizational human capital. This study aims to contribute to the development of scientific knowledge in this area that is so relevant for growth and differentiation.
目的本文的目的是了解内部营销在组织中的重要性,以及内部战略在人力资本管理中是否至关重要。特别是,它旨在了解作者所处理的组织中采用了什么样的政策,以及员工对这些政策的看法。设计/方法论/方法论所采用的方法结合了定量和定性方法,基于文件分析,以及调查和半结构化访谈,其中涉及内部营销的问题。这项研究是在属于Minho四边形的(葡萄牙)城市进行的,这些城市是布拉加、巴塞洛斯、吉马良斯和维拉诺瓦德法马利科,共有五个组织。研究结果似乎表明,内部营销在人力资本管理中发挥着至关重要的作用,特别是在相互关系的情况下,获得个人和组织的结果。在构成样本的158名受访者中,78.5%的人认为与幸福感和幸福感相关的内在因素与与与金钱奖励相关的外在因素同等重要。研究局限性/含义手稿为内部营销和人力资源管理(即动机和人力资本)提供了见解。在21世纪初快速而深刻的技术变革的基础上,内部营销的概念在全球化的刺激下出现,人们更加关注采取能够在市场中区分组织的战略。创意/价值这是一个跨学科的主题,对内部营销和人力资源管理都有贡献,同时考虑到提高组织人力资本的价值和福祉。本研究旨在促进这一领域与成长和分化密切相关的科学知识的发展。
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引用次数: 0
The role of employees' cognitive capabilities, knowledge creation and decision-making style in predicting the firm's performance 员工认知能力、知识创造和决策方式在预测企业绩效中的作用
IF 5.2 Q2 BUSINESS Pub Date : 2023-03-22 DOI: 10.1108/emjb-03-2022-0057
Hamzah Elrehail, Raed Aljahmani, A. Taamneh, Abdallah Alsaad, Manaf Al-Okaily, Okechukwu Lawrence Emeagwali
PurposeThis study explored the relationship between employees' cognitive capabilities and firm performance by exploring the moderating role of decision-making style and the mediating effect of knowledge creation. Understanding the role of cognitive capabilities in value creation is crucial for human resource management to achieve the anticipated organizational performance.Design/methodology/approachStructural equation modeling, cognitive skills theory, cognitive skills acquisition theory and a knowledge creation framework were applied.FindingsThe first finding suggests that only A-shaped skills predict higher knowledge creation, while T-shaped skills do not. Second, knowledge creation predicts higher financial performance and a lower level of financial uncertainty. Third, T-shaped skills have no indirect effect on financial performance or financial uncertainty. Fourth, A-shaped skills exerted significant indirect effects on financial performance and uncertainty. Fifth, the rational decision-making style did not moderate the link between knowledge creation and financial performance, as opposed to the intuitive decision-making style.Originality/valueA review of existing research indicates a lack of studies examining the effect of cognitive skills on organizational outcomes and contingencies under which cognitive skills lead to superior outcomes. This study advances research on T-shaped and A-shaped skills and knowledge creation by empirically exploring their interrelationships with financial performance. Managerial implications and suggestions for future research are also highlighted.
目的通过考察决策风格的调节作用和知识创造的中介作用,探讨员工认知能力与企业绩效之间的关系。理解认知能力在价值创造中的作用对于人力资源管理实现预期的组织绩效是至关重要的。设计/方法/方法结构方程建模、认知技能理论、认知技能习得理论和知识创造框架。第一个发现表明,只有a型技能预示着更高的知识创造,而t型技能则不然。其次,知识创造预示着更高的财务绩效和更低的财务不确定性。第三,t型技能对财务绩效或财务不确定性没有间接影响。第四,a型技能对财务绩效和不确定性具有显著的间接影响。第五,与直觉决策风格相反,理性决策风格没有调节知识创造与财务绩效之间的联系。对现有研究的回顾表明,缺乏关于认知技能对组织结果的影响以及认知技能导致卓越结果的偶然事件的研究。本研究通过实证探索t型和a型技能和知识创造与财务绩效的相互关系,推进了对它们的研究。本文还强调了管理意义和对未来研究的建议。
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引用次数: 0
Ten years after the Jasmine Revolution: do social audits matter for investment and credit-granting decision-making? 茉莉花革命十年后:社会审计对投资和信贷决策重要吗?
IF 5.2 Q2 BUSINESS Pub Date : 2023-03-21 DOI: 10.1108/emjb-04-2022-0076
Feten Arfaoui, I. Kammoun, Imen Ben Slimene
PurposeThis research aims to explore the perceived usefulness of audited social information in making economic decisions, in the eyes of both Tunisian financial analysts and bankers.Design/methodology/approachThe authors conduct an exploratory qualitative study using twelve semi-structured interviews: seven are carried out with financial analysts, and five are performed among bankers.FindingsThis study’s results reveal that financial analysts and bankers paid little attention to the audited social information in making investment/credit granting decisions. The authors also show that the low perceived usefulness of social audit is due to many reasons related to political, economic, regulatory, educational, cultural and cognitive factors.Originality/valueThis study contributes to the current literature in several ways. First, it enriches the knowledge about the perceived usefulness of social audit. To the authors’ knowledge, this is the first study to explore the perception of financial analysts and bankers to audited social information and its usefulness for decision-making. Second, the focus on the Tunisian context is interesting as it was marked, since the outbreak of the Jasmine Revolution, by the uncertainty and the instability of political, economic and social conditions. Third, this research goes further by exploring the most important factors affecting the perceiveness of social auditing.
目的本研究旨在探讨突尼斯金融分析师和银行家眼中经审计的社会信息在经济决策中的有用性。设计/方法论/方法作者使用12次半结构化访谈进行了一项探索性的定性研究:其中7次是对金融分析师进行的,5次是对银行家进行的。发现这项研究的结果表明,金融分析师和银行家在做出投资/信贷决策时很少关注经审计的社会信息。作者还表明,社会审计的低有用性是由许多与政治、经济、监管、教育、文化和认知因素有关的原因造成的。原创性/价值这项研究在几个方面对当前的文献做出了贡献。首先,它丰富了人们对社会审计有用性的认识。据作者所知,这是第一项探索金融分析师和银行家对经审计的社会信息的看法及其对决策的有用性的研究。第二,对突尼斯背景的关注是有趣的,因为自茉莉花革命爆发以来,政治、经济和社会条件的不确定性和不稳定就标志着突尼斯背景。第三,本研究进一步探讨了影响社会审计感知的最重要因素。
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引用次数: 0
Board diversity and export intensity: the moderating role of firm size 董事会多样性与出口强度:企业规模的调节作用
IF 5.2 Q2 BUSINESS Pub Date : 2023-03-17 DOI: 10.1108/emjb-10-2022-0184
Mine Aksoy, Mustafa Kemal Yilmaz, M. Çancı, Alp Ay
PurposeBuilding on resource dependence theory and contingency theory (CT) and focusing on an emerging market setting, this study investigates how demographic board diversity (BD) influences the export intensity (EI) of firms listed on Borsa Istanbul (BIST), with the moderating effect of firm size, as a contingency factor, on this interaction.Design/methodology/approachUsing a sample of 65 exporting firms listed on the BIST Industrials Index, this study explores how demographic attributes of board members, represented by the board diversity index (BDI), affects EI by employing panel data analysis over the period of 2016–2020.FindingsThe results suggest that there is a negative relationship between BD and EI, but firm size has a positive moderating effect on the association of BD and EI, indicating that large firms with diverse boards are more prone to access foreign markets and make export. The findings further indicate that board size and CEO duality have a negative and significant effect on EI, while marketing intensity has a positive and significant impact.Research limitations/implicationsThe sample covers only public companies listed on the BIST Industrials Index, and the impact of board characteristics on the EI is analyzed for a limited time frame, i.e. from 2016 to 2020.Practical implicationsThe findings help business executives better understand the contribution of the firm size on the interaction of BD and EI and offers valuable insights to companies to gain a competitive edge in international markets.Originality/valueThe study provides evidence on the effects of board attributes on the EI from the perspective of emerging countries. It also helps to gain a deeper understanding of how board dynamics contribute to the internationalization of companies.
目的基于资源依赖理论和偶然性理论,以新兴市场为背景,研究人口结构委员会多样性(BD)如何影响伊斯坦布尔证券交易所上市公司的出口强度(EI),企业规模作为偶然性因素对这种互动的调节作用。设计/方法/方法使用BIST工业指数上列出的65家出口公司的样本,本研究通过采用2016–2020年期间的面板数据分析,探讨了以董事会多样性指数(BDI)为代表的董事会成员的人口统计属性如何影响EI,但企业规模对BD和EI的关联具有积极的调节作用,表明董事会多元化的大公司更倾向于进入外国市场并进行出口。研究结果进一步表明,董事会规模和CEO二元性对EI有负面和显著的影响,而营销强度对EI有正面和显著影响。研究局限性/含义样本仅涵盖BIST工业指数上上市的上市公司,并在有限的时间框架内分析了董事会特征对EI的影响,即从2016年到2020年。实际含义这些发现有助于企业高管更好地了解企业规模对BD和EI互动的贡献,并为企业在国际市场上获得竞争优势提供有价值的见解。原创性/价值该研究从新兴国家的角度提供了董事会属性对EI影响的证据。这也有助于更深入地了解董事会动态如何促进公司国际化。
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引用次数: 0
The effect of life cycle stages on capital expenditures: evidence from an emerging market 生命周期阶段对资本支出的影响:来自新兴市场的证据
IF 5.2 Q2 BUSINESS Pub Date : 2023-03-06 DOI: 10.1108/emjb-06-2022-0115
Gökberk Can, Rezart Demiraj, Hounaida Mersni
PurposeThe purpose of the article is to examine the effect of life cycle stages on capital expenditures, using Borsa Istanbul-listed companies.Design/methodology/approachThe panel data estimation procedure was used as the primary method to test the hypothesis. The authors used four additional analyses to check the robustness of the results. The model was tested for endogeneity using the generalized method of moments (GMM) estimation. Quantile regression was utilized for the non-parametric test of the model. In the third robustness test, the sample was divided into two using financial constraints with the Size-Age (SA) Index proposed by Hadlock and Pierce (2010). The last analysis removed the global financial crisis (GFC) years from the sample.FindingsBorsa Istanbul-listed companies tend to invest less as they move forward in their life cycle stages. The results show that market capitalization, operating cash flow levels and leverage positively affect capital expenditure investments. The empirical evidence also revealed that cash holding levels have a negative effect on capital expenditure decisions. Robustness tests support the results.Practical implications The findings are potentially useful for investors and managers. Having the information that decreasing capital expenditures signals that the company is in the last stages of its life would be a sign for managers to improve their investment strategies to avoid getting out of business and survive. They need to find options and solutions to propel their companies back on a path of growth. Additionally, the same information could be vital for investors' investment decisions.Originality/valueThis paper contributes to the literature by providing evidence about the effect of life cycle stages on capital expenditures from an emerging market. To the best of the authors’ knowledge, it is the first paper to investigate empirically how moving forward in the life cycle stages affects capital expenditures in an emerging market.
本文的目的是研究生命周期阶段对资本支出的影响,使用Borsa伊斯坦布尔上市公司。设计/方法学/方法采用面板数据估计程序作为检验假设的主要方法。作者使用了四个额外的分析来检查结果的稳健性。利用广义矩估计方法对模型进行了内生性检验。采用分位数回归对模型进行非参数检验。在第三个稳健性检验中,使用财政约束和Hadlock和Pierce(2010)提出的Size-Age (SA) Index将样本分成两部分。最后一项分析将全球金融危机年份从样本中剔除。研究发现:在伊斯坦布尔证交所上市的公司在生命周期阶段越往前走,往往投资越少。结果表明,市值、经营性现金流水平和杠杆对资本支出投资有正向影响。实证还表明,现金持有水平对资本支出决策有负向影响。稳健性测试支持该结果。研究结果对投资者和管理者具有潜在的借鉴意义。如果了解到资本支出的减少意味着公司处于生命的最后阶段,这将是经理们改进投资策略以避免破产和生存的一个信号。他们需要找到各种选择和解决方案,推动公司重回增长之路。此外,同样的信息可能对投资者的投资决策至关重要。原创性/价值本文通过提供关于生命周期阶段对新兴市场资本支出影响的证据,为文献做出了贡献。据作者所知,这是第一篇实证研究生命周期阶段如何影响新兴市场资本支出的论文。
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引用次数: 0
Leveraging growth spillovers to navigate CARICOM trade relations in the post-COVID-19 global space 利用增长溢出效应,在新冠肺炎疫情后的全球空间中驾驭加共体贸易关系
IF 5.2 Q2 BUSINESS Pub Date : 2023-02-28 DOI: 10.1108/emjb-04-2022-0084
R. Hosein, Rebecca Gookool, G. Saridakis, Sandra Sookram
PurposeThe phenomenon of growth spillover occurs because of domestic shocks, global shocks and shocks to a foreign country or region, and these are transmitted through specific channels. This study investigates the strength of the economic linkages between Caribbean Community (CARICOM) economies and its main traditional partners, including the European Union (EU-27), and emerging trading partners, such as China, with a view to determining the presence and extent of spillover growth which results from the interdependence among these economies. The paper hypothesizes that the presence of these spillovers can be leveraged to chart the future for the region's integration in the global sphere.Design/methodology/approachBased on the existing theoretical and empirical literature, a structural vector autoregressive (SVAR) model was developed and employed to examine the strength of the economic linkages between CARICOM economies and its main trading partners, such as the United States (US), the United Kingdom (UK) and the EU-27, alongside some of the non-traditional partners such as China. This method has been widely used by institutions, such as the International Monetary Fund (IMF) and World Bank, to profile economic linkages between economies. To this end, the methodology was formulated based on the IMF Spillover Reports which were produced from 2011 to 2015.FindingsThe model suggests that positive spillovers are likely to occur from continued deepened integration with the US, EU-27 and the UK, as traditional trade partners, but that opportunities also exist from a deliberate deepening of relations with non-traditional trade partners, for example, China. This becomes even more apparent when CARICOM is separated into categories consisting of more developed countries (MDCs) and less developed countries (LDCs). In addition, from the perspective of any trading partner, such as those in the EU-27, this research is relevant and timely as it contributes to the landscape of literature, which can be utilized for the purpose of negotiating parameters of trade and integration arrangements.Research limitations/implicationsThis study adds to the literature on evaluating the direction for deepened integration of CARICOM economies, both with selected traditional and non-traditional trade partners as the region pilots recovery in a post-pandemic global space.Practical implicationsPolicymakers can use the results of this study to leverage economic spillovers as a basis for determining which trade partners offer the most significant growth benefits as the region recovers from the COVID-19 pandemic and it will also assist in steering regional integration. This result also implies that over time, the comparative advantage structure of CARICOM member countries' export profile should change to reflect the import profile of its trade partners. To this end, this study can be used to inform and better position the respective trade and industrial development policies of countri
目的增长溢出现象是由于国内冲击、全球冲击和对外国或地区的冲击而产生的,这些都是通过特定的渠道传播的。本研究调查了加勒比共同体(加共体)经济体与其主要传统伙伴(包括欧盟(欧盟27国))和新兴贸易伙伴(如中国)之间的经济联系强度,以确定这些经济体之间相互依存所产生的溢出增长的存在和程度。该论文假设,可以利用这些溢出效应的存在来规划该地区在全球范围内一体化的未来。设计/方法论/方法基于现有的理论和实证文献,开发并使用了一个结构向量自回归(SVAR)模型来检验加共体经济体与其主要贸易伙伴(如美国、英国和欧盟27国)之间的经济联系强度,与中国等一些非传统伙伴并肩作战。国际货币基金组织(货币基金组织)和世界银行等机构广泛使用这种方法来描述经济体之间的经济联系。为此,该方法是根据2011年至2015年编制的国际货币基金组织溢出报告制定的。发现该模型表明,与美国、欧盟27国和英国作为传统贸易伙伴的持续深化一体化可能会产生积极的溢出效应,但与非传统贸易伙伴有意深化关系也会带来机遇,例如中国。当加共体被分为较发达国家和较不发达国家时,这一点就更加明显了。此外,从任何贸易伙伴的角度来看,例如欧盟27国的贸易伙伴,这项研究都是相关的和及时的,因为它有助于文献的景观,可以用于谈判贸易和一体化安排的参数。研究局限性/含义这项研究增加了关于评估加共体经济体深化一体化方向的文献,包括与选定的传统和非传统贸易伙伴的一体化,因为该地区在疫情后的全球空间中试点复苏。实际含义政策制定者可以利用这项研究的结果,利用经济溢出效应作为基础,确定随着该地区从新冠肺炎疫情中复苏,哪些贸易伙伴提供了最显著的增长效益,这也将有助于指导区域一体化。这一结果还意味着,随着时间的推移,加共体成员国出口情况的比较优势结构应该发生变化,以反映其贸易伙伴的进口情况。为此,这项研究可用于为加勒比区域各国在努力深化区域和国际一体化时各自的贸易和工业发展政策提供信息并更好地定位这些政策。从合作伙伴的角度来看,考虑到与加勒比经济体加深关系所带来的地理利益,传统贸易关系,如与欧洲国家的贸易关系,例如《加勒比经济伙伴关系协定》,可以更谨慎地加以利用。此外,这项研究也可以作为未来研究的出发点。原创性/价值这项研究是为数不多的将溢出效应作为后2019冠状病毒病时代重建经济增长战略的实证研究之一。这项研究为评估加共体经济体与选定的传统和非传统贸易伙伴深化一体化方向的文献增添了内容,因为该地区正在疫情后的全球空间中复苏。
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引用次数: 0
Work performance change during the Covid-19 pandemic under risk-as-feelings hypothesis for managers across Europe 在风险即感觉假设下,欧洲各地管理人员在Covid-19大流行期间的工作绩效变化
IF 5.2 Q2 BUSINESS Pub Date : 2023-02-28 DOI: 10.1108/emjb-10-2022-0179
Fadhila Hamza
PurposeThis study aims to examine the predictors of the managers’ work performance under the risk-as-feelings hypothesis during the Covid-19 pandemic in four European countries. Specifically, it aims to investigate the impact of risk-related job stressors and behavioral and emotional reactivities on non-managers and managers performance in risky circumstances.Design/methodology/approachThe author assessed simultaneously the effects of occupational health risk perception and the resulting feelings and emotional state such irritability and commitment change, the effects of income and others organizational and personal variables as performance stressors. The author used a sample of 652 employees divided on two groups (71% non-managers and 23% managers). Data are obtained from the dataset in Prochazka et al., (2020) collected using online survey delivered to employees employed in their companies for a minimum of five months in the period between Mai and June 2020.FindingsThe results confirm the risk-as-feelings hypothesis and show significant effect of occupational health risk perception and associated emotional responses (irritability and commitment) on the work performance for non-managers’ group. However, for managers’ group the main determinant of work performance is the organizational commitment as explained by the job-demands-resources-model (JDRM).Originality/valueThe originality of this study is to employ the risk-as-feelings hypothesis (Loewenstein et al., 2001) in a management research question such as job performance predictors. Thus, this study contributes to the literature on job performance in two significant ways. First, it examines the risk-related job’s stressors as determinants of managers and non-managers performance under the risk-as-feelings hypothesis. Second, it tests the importance of functional differences as an approach to better investigate the framework of the JDRM (Bakker and Demerouti, 2017).
目的本研究旨在检验新冠肺炎大流行期间欧洲四个国家经理在风险即薪酬假设下的工作绩效预测因素。具体而言,它旨在调查与风险相关的工作压力源以及行为和情绪反应对非管理者和管理者在风险环境中表现的影响。设计/方法/方法作者同时评估了职业健康风险感知和由此产生的感觉和情绪状态的影响,如易怒和承诺改变,收入和其他组织和个人变量作为绩效压力源的影响。作者使用了652名员工的样本,分为两组(71%为非经理,23%为经理)。数据是从Prochazka等人。,(2020)通过对在2020年5月至6月期间在其公司工作至少五个月的员工进行的在线调查收集。结果证实了风险即感觉假说,并显示职业健康风险感知和相关情绪反应(易怒和承诺)对非管理者的工作表现有显著影响组然而,对于管理者群体来说,工作绩效的主要决定因素是工作需求-资源模型(JDRM)所解释的组织承诺。独创性/价值本研究的独创性是在工作绩效预测因子等管理研究问题中采用风险即感觉假说(Loewenstein et al.,2001)。因此,本研究在两个重要方面对有关工作表现的文献做出了贡献。首先,在风险即感觉假说下,考察了风险相关的工作压力源作为管理者和非管理者绩效的决定因素。其次,它测试了功能差异作为更好地研究JDRM框架的方法的重要性(Bakker和Demerouti,2017)。
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引用次数: 0
Machine and deep learning-based stock price prediction during the COVID-19 pandemic: the case of CAC 40 index 基于机器和深度学习的COVID-19大流行期间股价预测:以CAC 40指数为例
IF 5.2 Q2 BUSINESS Pub Date : 2023-02-28 DOI: 10.1108/emjb-05-2022-0104
Mohamed Lachaab, Abdelwahed Omri
PurposeThe goal of this study is to investigate the predictive performance of the machine and deep learning methods in predicting the CAC 40 index and its 40 constituent prices of the French stock market during the COVID-19 pandemic. The study objective in forecasting the CAC 40 index is to analyze if the index and the individual prices will preserve the continuous increase they acquired at the beginning of the administration of vaccination and containment measures or if the negative effect of the pandemic will be reflected in the future.Design/methodology/approachThe authors apply two machine and deep learning methods (KNN and LSTM) and compare their performances to ARIMA time series model. Two scenarios have been considered: optimistic (high values) and pessimistic (low values) and four periods are examined: the period before COVID-19 pandemic, the period during the COVID-19, and the period of vaccination and containment. The last period is divided into two sub-periods: the test period and the prediction period.FindingsThe authors found that the KNN method performed better than LSTM and ARIMA in forecasting the CAC 40 index for both scenarios. The authors also identified that the positive effect of vaccination and containment outweighs the negative effect of the pandemic, and the recovery pattern is not even among major companies in the stock market.Practical implicationsThe study empirical results have valuable practical implications for companies in the stock market to respond to unexpected events such as COVID-19, improve operational efficiency and enhance long-term competitiveness. Companies in the transportation sector should consider additional investment in R&D on communication and information technology, accelerate their digital capabilities, at least in some parts of their businesses, develop plans for lights out factories and supply chains to keep pace with changing times, and even include big data resources. Additionally, they should also use a mix of financing sources and securities in order to diversify their capital structure, and not rely only on equity financing as their share prices are volatile and below the pre-pandemic level. Considering portfolio allocation, the transportation sector was severely affected by the pandemic. This displays that transportation equities fail to be a candidate as a good diversifier during the health crisis. However, the diversification would be worth it while including assets related to the banking and industrial sectors. On another strand, the instability of this period induced an informational asymmetry among investors. This pessimistic mood affected the assets' value and created a state of disequilibrium opening up more opportunities to benefit from potential arbitrage profits.Originality/valueThe impact of COVID-19 on stock markets is significant and affects investor behavior, who suffered amplified losses in a very short period of time. In this regard, correct and well-informed decision-makin
本研究的目的是研究机器和深度学习方法在COVID-19大流行期间预测法国股市CAC 40指数及其40个成分股价格的预测性能。预测CAC 40指数的研究目的是分析该指数和个别价格是否会保持在接种疫苗和控制措施开始时获得的持续增长,或者大流行的负面影响是否会在未来得到反映。设计/方法/方法作者应用了两种机器和深度学习方法(KNN和LSTM),并将其性能与ARIMA时间序列模型进行了比较。考虑了两种情况:乐观(高值)和悲观(低值),并审查了四个时期:COVID-19大流行前时期、COVID-19期间和疫苗接种和遏制时期。最后一个阶段分为两个子阶段:测试阶段和预测阶段。作者发现,在预测两种情况下的CAC - 40指数方面,KNN方法比LSTM和ARIMA方法表现更好。这组作者还指出,疫苗接种和遏制的积极影响超过了大流行的负面影响,甚至在股市的主要公司中也没有出现复苏模式。研究的实证结果对股票市场公司应对新冠肺炎等突发事件,提高运营效率,增强长期竞争力具有重要的现实意义。交通运输行业的公司应该考虑在通信和信息技术的研发方面进行额外投资,至少在某些业务领域加快数字化能力的发展,制定关紧工厂和供应链的计划,以跟上时代的变化,甚至包括大数据资源。此外,它们还应混合使用融资来源和证券,以使其资本结构多样化,而不是仅仅依赖股权融资,因为它们的股价波动较大,低于大流行前的水平。考虑到投资组合分配,运输部门受到大流行病的严重影响。这表明,在医疗危机期间,运输类股票无法成为一个良好的多元化投资对象。然而,如果包括与银行和工业部门相关的资产,这种多元化将是值得的。另一方面,这一时期的不稳定导致投资者之间的信息不对称。这种悲观情绪影响了资产的价值,并造成了一种不均衡状态,为从潜在套利利润中获利提供了更多机会。新冠肺炎疫情对股市的影响是巨大的,影响到投资者的行为,投资者在很短的时间内遭受了更大的损失。在这方面,投资者和其他市场参与者的正确和明智的决策需要在大流行期间仔细分析和准确预测股票市场。然而,在这一领域进行的研究很少,这些研究要么集中在一些特定的股票市场,要么没有应用强大的机器学习和深度学习技术,如LSTM和KNN。据我们所知,在疫情期间,还没有进行过使用这些技术评估和预测CAC 40法国股票市场的研究。本研究试图弥补这一文献空白。
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引用次数: 2
Barriers to service transition in an innovation ecosystem: a qualitative study 创新生态系统中服务转型的障碍:定性研究
IF 5.2 Q2 BUSINESS Pub Date : 2023-02-28 DOI: 10.1108/emjb-02-2022-0030
Dênio Carneiro, Mário Franco, M. Rodrigues
PurposeThis study arises from the need to understand the servitization or service transition process in non-manufacturing firms and sets out from a taxonomy proposed in the literature (Lütjen et al., 2017). This study aims to identify the barriers to service transition in small and medium-sized enterprises (SME) participating in an innovation ecosystem and how these small firms can benefit from this strategy to develop in this scale.Design/methodology/approachA qualitative study was carried out based on multiple case studies, data being collected through semi-structured interviews with service business-people belonging to a science and technology park situated in an inland region of Portugal.FindingsFrom content analysis, the results obtained indicated a lack of specialized personnel as the main barrier and as a strategy to overcome this situation these companies turned to business cooperation. This means that good management of this cooperation increases the quality of the services provided, as inter-organizational networks, through participation in ecosystems, can secure a wider set of resources and capacities.Practical implicationsThis study shows that firms try out different service offers simultaneously and that innovation capacity increases constantly during service transition. Secondly, the study emphasizes the importance of innovation ecosystems, entrepreneurship, servitization and cooperation networks in promoting resilient and small ventures. Thus, this study can help owner-managers, SMEs and political decision-makers to make better informed decisions, which can be particularly relevant in scenarios of uncertainty and crisis.Originality/valueThis study draws conclusions in a little explored empirical area in the literature, challenging the widespread understanding that service transition is used only in manufacturing firms. This study provides clearer conceptual understanding of service transition from a network and relational perspective which, despite the perspective's relevance, still lacks research in the context of servitization.
目的本研究源于对非制造业企业服务化或服务转型过程的理解,并从文献中提出的分类法出发(Lütjen et al.,2017)。本研究旨在确定参与创新生态系统的中小型企业(SME)在服务转型方面的障碍,以及这些小企业如何从这一战略中受益,以实现如此规模的发展。设计/方法/方法在多个案例研究的基础上进行了定性研究,数据是通过对葡萄牙内陆科技园区服务企业人员的半结构化访谈收集的。发现从内容分析来看,所获得的结果表明,缺乏专业人员是主要障碍,作为克服这种情况的策略,这些公司转向了商业合作。这意味着,对这种合作的良好管理可以提高所提供服务的质量,因为组织间网络通过参与生态系统,可以确保更广泛的资源和能力。实践含义本研究表明,企业同时尝试不同的服务,并且在服务转型过程中创新能力不断提高。其次,该研究强调了创新生态系统、创业精神、服务化和合作网络在促进有韧性的小型企业方面的重要性。因此,这项研究可以帮助业主管理者、中小企业和政治决策者做出更明智的决策,这在不确定性和危机的情况下尤其重要。原创性/价值这项研究在文献中很少探索的实证领域得出结论,挑战了服务转型仅在制造业企业中使用的广泛理解。本研究从网络和关系的角度对服务转型提供了更清晰的概念理解,尽管该视角具有相关性,但仍缺乏服务化背景下的研究。
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引用次数: 1
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EuroMed Journal of Business
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