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African green hydrogen uptake from the lens of African development and European energy security: A blessing or curse?

IF 12.9 1区管理学 Q1 BUSINESS

Technological Forecasting and Social Change

Pub Date : 2025-03-28 DOI: 10.1016/j.techfore.2025.123974

Elkhan Richard Sadik-Zada , Andrea Gatto , Nils Schäfer

The present paper explores the perspectives on the rollout of green hydrogen in Africa from sectoral and macroeconomic viewpoints. It critically reviews the datasets projecting the costs of renewable hydrogen and the current state of the import/export market; besides, based on key scientific publications, trends, and gaps in the green hydrogen economy, fresh insights are detected through integrative review and scientometrics. Microeconomically founded scenario analyses are conducted, focusing on Africa. Hence, the study offers an outlook on the contribution of green hydrogen to African economic development. The inquiry finds that, due to economies of scale, green hydrogen production and exports will likely be concentrated in a few African countries that achieve competitive production costs relatively early. Additionally, cost considerations and the level of the development of democratic institutions will also play a crucial role in establishing renewable hydrogen export hubs in Africa. Assessment of the IEA Hydrogen Production and Infrastructure Projects Database, updated in October 2023, reveals that Egypt, Morocco, Namibia, and South Africa are the leading candidates for hydrogen production and exports from Africa. Consequently, the EU-driven expansion of global green hydrogen production centers in the 2020s and 2030s could result in a shift from petroleum dependence on the Middle East and Russia to hydrogen reliance on just a few African countries by the early 2040s. This deployment could conflict with European interests in fostering energy cooperation with Africa. Without development of comprehensive hydrogen value chains in Africa, green hydrogen sector risksperpetuating extractivism and insecurity, resulting in enclave-style renewable hydrogen industry and a “hydrogen-curse” that exacerbates African maldevelopment.

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引用次数: 0

Knowledge donation, hoarding, and hiding behaviors of high performers: Mediation role of deviant silence

IF 7.1 3区管理学 Q1 BUSINESS

European Research on Management and Business Economics

Pub Date : 2025-03-28 DOI: 10.1016/j.iedeen.2025.100276

Muhammad Waseem Bari , Qurratulain Khan , Francesca Di Virgilio

High performance punishment occurs when organizations distribute more work responsibilities to their best performers without offering supplementary compensation or recognition. The lack of appreciation through additional rewards creates burnout and employee resentment in such situations. Drawing on social exchange theory, this study examines the impact of high-performance punishment on high performers’ knowledge behaviors: knowledge donation, hoarding, and hiding. Besides, how deviant silence mediates these relationships. The sample data are collected from 534 employees of IT organizations across countries, and data are analyzed using the PLS-SEM technique with the Smartpls 4 software. The results show that high-performance punishment positively impacts knowledge hoarding and hiding behaviors but does not significantly impact knowledge donation. Deviant silence partly mediates the relationship between high-performance punishment and knowledge behaviors. It is deduced that although high-performance punishment promotes negative knowledge behaviors, but it does not affect willingness to donate knowledge until an employee indulges in deviant silence. The paper concludes with practical implications for organizations and submissions for future studies on managing high-performing employees.

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引用次数: 0

Unveiling the Relationship Between ESG and Growth of Unlisted Firms: Empirical Insights From Eastern Europe and Central Asia

IF 13.4 1区管理学 Q1 BUSINESS

Business Strategy and The Environment

Pub Date : 2025-03-28 DOI: 10.1002/bse.4257

Nosheen Rasool, Murugesh Arunachalam, Nirosha Hewa Wellalage, Vijay Kumar

This study aims to uncover the empirical relationship between environmental, social and governance (ESG) factors and the growth of 19,956 unlisted firms in the East Europe and Central Asia (EECA) region. While the existing literature focuses on ESG performance in listed firms, there is a gap in understanding the growth dynamics of unlisted firms in EECA, which face challenges in implementing ESG initiatives due to resource constraints as the prime cause. The ESG index is constructed using principal component analysis (PCA), and growth is assessed through the variables of sales growth (SG), employment growth (EG) and asset growth (AG). To address endogeneity in the ESG–growth relationship, a two‐stage least squares (2SLS) estimator is employed, using instrumental variables. The results show a positive and significant relationship between ESG and growth indicators, emphasising the importance of sustainable practices for positive stakeholder relationships, enhanced reputation and long‐term growth. This research offers unique insights into the ESG–growth connection for unlisted firms in EECA, benefiting stakeholders by divulging employment opportunities in society and amplifying sales and asset growth.

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引用次数: 0

On queens and tours

IF 0.8 4区管理学 Q4 OPERATIONS RESEARCH & MANAGEMENT SCIENCE

Operations Research Letters

Pub Date : 2025-03-28 DOI: 10.1016/j.orl.2025.107283

Pieter Jacobs, Andrés López Martínez, Frits Spieksma

Given the complete graph on n vertices, where

n \geq 3

, we define two Hamiltonian cycles as cyclic disjoint if, for each pair of vertices, the distance between them in one Hamiltonian cycle differs from the distance between them in the other Hamiltonian cycle. We investigate the number of pairwise cyclic disjoint tours that exist in

K_{n}

. Specifically, we identify when pairs of cyclic disjoint tours can occur and provide a procedure to generate

\frac{m - 1}{2}

pairwise cyclic disjoint tours, where m is the smallest prime factor of n. Finally, we demonstrate that the number

\frac{m - 1}{2}

of pairwise cyclic disjoint tours is maximized when n is prime.

引用次数: 0

Successful commercialisation in startup accelerator programmes: How different startup ecosystems matter

IF 15.6 1区管理学 Q1 BUSINESS

Journal of Innovation & Knowledge

Pub Date : 2025-03-28 DOI: 10.1016/j.jik.2025.100688

Farzaneh Eslamloo , Kerry Brown , Zahra Amrollahi Biyouki

This study examined the influence of the Western Australian and Iranian startup ecosystem contexts, including the powers and liabilities that determine startups’ commercialisation outcomes. By utilising a theoretical framework based on programme evaluation, explanatory theory building, and critical realism, a cross-contextual comparison study was conducted. The study showed that the context of startup accelerator programmes and the startup ecosystem is an important determinant of commercialisation outcomes. The study revealed factors that impede startup accelerator programme success, including low follow-on investment, ecosystem immaturity, the ineffective agency of the Western Australian and Iranian governments, low levels of talent among startup agents, and the shortcomings of the startup accelerator programmes. The research confirmed that programme evaluation is a suitable theoretical base for the evaluation of startup accelerator programmes by determining what works, for whom, in what context, and why. It extended the existing body of knowledge by developing the change models of the startup accelerator programmes studied in the context of Western Australia and Iran, which can be applied in research on other startup accelerator programmes in different contexts.

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引用次数: 0

From Baby Boomers to Z: Gastronomic preferences and the generational framework of experience and branding

IF 8.9 2区管理学 Q1 HOSPITALITY, LEISURE, SPORT & TOURISM

Journal of Destination Marketing & Management

Pub Date : 2025-03-28 DOI: 10.1016/j.jdmm.2025.101003

Beatriz Torres-Casado, Natalia López-Mosquera

Tourists' behavior when choosing gastronomic destinations is fundamental for strategic decision making. However, there is a notable lack of studies analyzing how tourists' cognitive and affective perceptions vary according to the generation to which they belong (Baby Boomers, X, Y, Z). A new Generational Experience and Branding Framework is proposed and validated, using different theories of consumer behavior and destination branding, which, combined with variables such as prestige and restaurant atmosphere, allows studying the different perceptions of the generations in terms of attitudinal and situational factors that influence willingness to pay and final payment. Data from 526 tourists who tasted local gastronomy in Extremadura, Spain, revealed significant differences between cohorts. Through SEM, the results show significant differences between cohorts, highlighting the broad perception of attitudinal and situational factors by Generation Z, compared to Baby Boomers. These insights can guide marketers in developing social media strategies that appeal to all generations, enhance regional competitiveness, and boost restaurant profitability of restaurants in Extremadura.

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引用次数: 0

q-fixed majority efficiency of committee scoring rules

IF 0.8 4区管理学 Q4 OPERATIONS RESEARCH & MANAGEMENT SCIENCE

Operations Research Letters

Pub Date : 2025-03-28 DOI: 10.1016/j.orl.2025.107282

Clinton Gubong Gassi , Eric Kamwa

This paper introduces the q-fixed majority property for committee selection rules, which extends the traditional fixed majority principle to a flexible framework. We examine conditions under which the committee scoring rules satisfy the q-fixed majority property. Focusing on (weakly) separable rules, we find that the Bloc rule is the only which satisfies it for all

q > 1 / 2

. In addition, the q-bottom majority property is introduced, highlighting conditions under which committees can be excluded based on voter consensus.

引用次数: 0

The interaction effects of mortality salience and power distance belief on luxury hotel booking intention

IF 7.6 1区管理学 Q1 HOSPITALITY, LEISURE, SPORT & TOURISM

Journal of Hospitality and Tourism Management

Pub Date : 2025-03-27 DOI: 10.1016/j.jhtm.2025.03.012

Qianqian Su , Fangxuan (Sam) Li

Individuals experience anxiety when confronted with mortality. While certain consumption behaviors can alleviate anxiety, few studies have explored the potential therapeutic effects of staying in luxury hotels. Drawing on terror management theory (TMT), this study examines the interaction effects of mortality salience and power distance belief (PDB) on luxury hotel booking intentions among potential tourists. Two studies were conducted to test this relationship across different samples. The results indicate that for potential tourists with high (low) PDB, mortality salience increases (reduces) their intention to book luxury hotels. Furthermore, the mediating role of the need for status in explaining the interaction effect has also been demonstrated in both studies. These findings contribute to the research on TMT and provide valuable insights into hospitality marketing related to luxury hotel consumption.

人在面对死亡时会感到焦虑。虽然某些消费行为可以缓解焦虑，但很少有研究探讨入住豪华酒店的潜在治疗效果。本研究借鉴恐怖管理理论（TMT），探讨了死亡率显著性和权力距离信念（PDB）对潜在游客豪华酒店预订意向的交互影响。我们进行了两项研究，在不同的样本中检验这种关系。结果表明，对于高（低）权力距离信念的潜在游客来说，死亡率显著性会增加（减少）他们预订豪华酒店的意愿。此外，在这两项研究中还证明了地位需求在解释互动效应中的中介作用。这些发现有助于对 TMT 的研究，并为与豪华酒店消费相关的酒店营销提供了有价值的见解。

引用次数: 0

To invest or not to invest the business Angel´s dilemma

IF 15.6 1区管理学 Q1 BUSINESS

Journal of Innovation & Knowledge

Pub Date : 2025-03-27 DOI: 10.1016/j.jik.2025.100699

Oscar Arroyo-Revilla , Cayetano Medina-Molina , Carlos Bellón Núñez-Mera , Noemí Pérez-Macías

Business Angels (BAs) are pivotal in early-stage funding for entrepreneurship. This study explores the factors influencing BA investment decisions. We propose a theoretical model based on signaling theory to assess the impact of signals about the quality of entrepreneurs and projects on investment assessments and decisions. Using qualitative comparative analysis (QCA) on 88 survey responses from BAs in Spain, we identify the signal combinations influencing both preliminary evaluation and final investment decisions.

Our findings highlight two key insights. First, both entrepreneurial and project-related factors are crucial in assessing opportunities and making investment decisions, with the entrepreneur's personal characteristics, particularly trust, being vital. Second, we examine the varying configurations of evaluation criteria used by BAs at different investment stages, revealing that selection criteria evolve from initial screening to the final decision, challenging the previously believed compensatory decision model.

This article enhances the understanding of investment criteria asymmetry, providing valuable insights for the entrepreneurial ecosystem to close funding rounds effectively and revealing significant heterogeneity in BAs investment strategies, thus confirming the concept of equifinality.

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引用次数: 0

Predicting postoperative chronic opioid use with fair machine learning models integrating multi-modal data sources: a demonstration of ethical machine learning in healthcare.

IF 4.7 2区医学 Q1 COMPUTER SCIENCE, INFORMATION SYSTEMS

Journal of the American Medical Informatics Association

Pub Date : 2025-03-27 DOI: 10.1093/jamia/ocaf053

Nidhi Soley, Ilia Rattsev, Traci J Speed, Anping Xie, Kadija S Ferryman, Casey Overby Taylor

Objective: Building upon our previous work on predicting chronic opioid use using electronic health records (EHR) and wearable data, this study leveraged the Health Equity Across the AI Lifecycle (HEAAL) framework to (a) fine tune the previously built model with genomic data and evaluate model performance in predicting chronic opioid use and (b) apply IBM's AIF360 pre-processing toolkit to mitigate bias related to gender and race and evaluate the model performance using various fairness metrics.

Materials and methods: Participants included approximately 271 All of Us Research Program subjects with EHR, wearable, and genomic data. We fine-tuned 4 machine learning models on the new dataset. The SHapley Additive exPlanations (SHAP) technique identified the best-performing predictors. A preprocessing toolkit boosted fairness by gender and race.

Results: The genetic data enhanced model performance from the prior model, with the area under the curve improving from 0.90 (95% CI, 0.88-0.92) to 0.95 (95% CI, 0.89-0.95). Key predictors included Dopamine D1 Receptor (DRD1) rs4532, general type of surgery, and time spent in physical activity. The reweighing preprocessing technique applied to the stacking algorithm effectively improved the model's fairness across racial and gender groups without compromising performance.

Conclusion: We leveraged 2 dimensions of the HEAAL framework to build a fair artificial intelligence (AI) solution. Multi-modal datasets (including wearable and genetic data) and applying bias mitigation strategies can help models to more fairly and accurately assess risk across diverse populations, promoting fairness in AI in healthcare.

研究目的本研究以我们之前利用电子健康记录（EHR）和可穿戴设备数据预测慢性阿片类药物使用情况的工作为基础，利用 "整个人工智能生命周期的健康公平"（HEAAL）框架，(a) 利用基因组数据对之前建立的模型进行微调，并评估模型在预测慢性阿片类药物使用情况方面的性能；(b) 应用 IBM 的 AIF360 预处理工具包减轻与性别和种族有关的偏差，并利用各种公平性指标评估模型的性能：参与者包括约 271 名 "我们所有人 "研究计划受试者，他们拥有电子病历、可穿戴设备和基因组数据。我们在新数据集上对 4 个机器学习模型进行了微调。SHapley Additive exPlanations（SHAP）技术确定了表现最佳的预测因子。预处理工具包提高了性别和种族的公平性：遗传数据提高了先前模型的性能，曲线下面积从 0.90（95% CI，0.88-0.92）提高到 0.95（95% CI，0.89-0.95）。主要预测因素包括多巴胺 D1 受体 (DRD1) rs4532、一般手术类型和体育锻炼时间。应用于堆叠算法的重权重预处理技术有效地提高了模型在不同种族和性别群体中的公平性，同时不影响性能：我们利用HEAAL框架的两个维度来构建一个公平的人工智能（AI）解决方案。多模态数据集（包括可穿戴设备和基因数据）和偏差缓解策略的应用可以帮助模型更公平、更准确地评估不同人群的风险，促进医疗保健领域人工智能的公平性。

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引用次数: 0

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管理学最新文献

全部化学•材料生命科学医学物理工程技术环境•农林材料科学地球科学法学管理学化学环境科学与生态学计算机科学教育学经济学农林科学人文科学生物学数学物理与天体物理心理学综合性期刊其他工业工程理学历史学农学文学信息工程

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全部 ACS Publications Elsevier ieeexplore Springer The Royal Society of Chemistry Wiley

期刊

全部 Acad Manage J Accounting and Business Research Acad Manage Rev Administrative Science Quarterly ANN OPER RES Asia Pacific Journal of Management Business Strategy and The Environment Career Development International California Management Review CENT EUR J OPER RES Contemporary Accounting Research Coll Res Libr Culture and Organization European Accounting Review Harvard business review Ind Labor Relat Rev Industry and Innovation Information Systems and e-Business Management International Journal of Contemporary Hospitality Management INT J ELECTRON COMM International Journal of Logistics Research and Applications Int. J. Mobile Commun. International Journal of Human Resource Management International Journal of Operations & Production Management International Journal of Physical Distribution & Logistics Management International Journal of Strategic Property Management International Marketing Review Journal of Business Research J Bus Ethics J Consum Res 华中农业大学学报 Journal of Marketing J PROD INNOVAT MANAG J. Risk Res. J. Syst. Sci. Syst. Eng. Journal of the Academy of Marketing Science J. Oper. Res. Soc. Management Decision Long Range Planning Library Resources & Technical Services OMEGA-INT J MANAGE S Organizational Research Methods PROD OPER MANAG PROD PLAN CONTROL Profesional De La Informacion Public Management Review Review of Managerial Science Regulation & Governance R&D Management Restaurator. International Journal for the Preservation of Library and Archival Material SCIENTOMETRICS Strategic Management Journal Supply Chain Management: An International Journal Strategic Organization Sustainability Accounting, Management and Policy Journal TELECOMMUN POLICY Total Quality Management & Business Excellence Archives Economic Outlook 数据分析与知识发现 Oper. Res. Perspect. Finance and Development Public Adm Dev Zeitschrift Fur Bibliothekswesen Und Bibliographie Informacios Tarsadalom J Quant Econ Information & Culture Library and Information Science Journal of Environmental Accounting and Management LIBRARY COLLECTIONS ACQUISITIONS & TECHNICAL SERVICES German Journal of Human Resource Management-Zeitschrift Fur Personalforschung Betriebswirtschaftliche Forschung Und Praxis Canadian Journal of Information and Library Science-Revue Canadienne Des Sciences De L Information et De Bibliotheconomie Informacao & Sociedade-Estudos Investigacion Bibliotecologica Transinformacao Journal of Scholarly Publishing Journal of Data and Information Science Library (Lond) ECONOMIC AFFAIRS European Journal of Futures Research Rbgn-Revista Brasileira De Gestao De Negocios Malaysian Journal of Library & Information Science Journal of East European Management Studies Spanish Journal of Finance and Accounting-Revista Espanola De Financiacion Y Contabilidad Q J Finance Reference & User Services Quarterly Science Technology and Society Academia-Revista Latinoamericana De Administracion Libri-International Journal of Libraries and Information Studies Library Journal South African Journal of Business Management Revista De Contabilidad-Spanish Accounting Review Entrepreneurship Research Journal Management & Organizational History Negotiation and Conflict Management Research Labor History European Research on Management and Business Economics Transylvanian Review of Administrative Sciences Asian J. Technol. Innovation

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