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This paper aims to provide an overview of the application of blockchain to agri-food supply chains, including key issues and trends. It examines the state of the art and conceptual structure of the field and proposes an agenda to guide future research.

This article performs a bibliometric analysis using VOSviewer software on a sample of 205 articles from the WoS database to identify research trend topics.

The number of publications in this area has increased since 2020, which shows a growing research interest. The research hotspots are related to the integration of blockchain technology in the agri-food supply chain for traceability, coordination between all actors involved, transparency of operations and improvement of food safety. Furthermore, this is linked to sustainability and the achievement of the sustainable development gtoals (SDGs), while addressing key challenges in the implementation of blockchain-based technologies in the agri-food supply chain.

The application of blockchain in the agri-food supply chain may consider four key aspects. Firstly, the implementation of blockchain can improve the traceability of food products. Secondly, this technology supports sustainability issues and could avoid disruptions in the agri-food supply chain. Third, blockchain improves food quality and safety control throughout the supply chain. Fourthly, the findings show that regulation is needed to improve trust between stakeholders.

The paper provides a comprehensive overview of the blockchain phenomenon in the agri-food supply chain by optimising the search criteria. Moreover, it serves to bridge to future research by identifying gaps in the field.

Whenever social injustice tackled by social movements receives heightened media attention, charitable crowdfunding platforms offer an opportunity to proactively advocate for equality by donating money to affected people. This research examines how the Black Lives Matter movement and the associated social protest cycle after the death of George Floyd have influenced donation behavior for campaigns with a personal goal and those with a societal goal supporting the black community.

This paper follows a quantitative research approach by applying a quasi-experimental research design on a GoFundMe dataset. In total, 67,905 campaigns and 1,362,499 individual donations were analyzed.

We uncover a rise in donations for campaigns supporting the black community, which lasts substantially longer for campaigns with a societal than with a personal funding goal. Informed by construal level theory, we attribute this heterogeneity to changes in the level of abstractness of the problems that social movements aim to tackle.

This research advances the knowledge of individual donation behavior in charitable crowdfunding. Our results highlight the important role that charitable crowdfunding campaigns play in promoting social justice and anti-discrimination as part of social protest cycles.

This study analyzes the impact of sports social media on a country regarding three international events connected to the brand Spain. It examines (1) the use and importance of various social media platforms in sports events and (2) identifies the countries generating the most social media content.

A total of 1,711,084 posts were collected for analysis, focusing on FIFA World Cup Qatar 2022, XLI Marathon Valencia Trinidad Alfonso 2022 and Davis Cup 2022, with a particular emphasis on the Spain brand. Through Atribus, diverse social media data were recovered and analyzed. Later, we recommended employing various metrics and ANOVAs to address the research questions. Additionally, we conducted a sentiment analysis.

The results show differences between (1) the use and relevance of social network platforms and events and (2) the content generated by different countries. The practical implications offer valuable insights for sports event organizers, destination managers and other stakeholders. The research implications suggest potential avenues for future research based on the observed patterns and behaviors in social media posts related to sports events and Brand Spain.

(1) Some papers have studied the role of sports events’ social media, ignoring the comparison among different social media platforms; (2) usually, previous literature has focused on a single event or sport and (3) although there is considerable research related to the strategic and operational Inés Küster Boluda Inés Küster Boluda role of social media, there is less systematic analysis related to the extent sports events use social media in general and in specific social media platforms and virtually nonexistent studies that employ index measurements.

本研究擬分析就三個與西班牙品牌有關的國際體育賽事而言，體育社交媒體對一個國家的影響。俱體而言，本研究擬探討： (一) 、各體育賽事社交媒體平台的使用和其重要性，以及 (二) 、是哪些國家生成最多的社交媒體內容。

研究人員收集共計1,711,084帖子以便進行分析;其焦點放在2022年卡塔爾世界盃 (即2022年國際足聯世界盃) ，2022年特尼利尼達阿方索馬拉松賽－瓦倫西亞 (XLI Marathon Valencia Trinidad Alfonso 2022) 和2022年台維斯盃;研究人員特別把重點放在西班牙品牌上。研究人員透過 Atribus 重新取得多種多樣的社交媒體數據，然後進行分析。之後，研究人員建議使用不同的度量和方差分析去處理各研究問題，以及進行了情感分析。

研究結果顯示了以下兩者之差異：(一) 、社交網絡平台和比賽項目的使用和關聯，以及 (二) 、不同國家生成的內容。從這個研究發現，體育賽事的籌辦者、目的地管理人員和其它利益相關者，均會獲得寶貴的實務啟示;至於就未來學術研究的路向而言，學者和研究人員或許可觀察關於體育賽事和西班牙品牌的社交媒體帖子裡顯示的模式和行為，從而找到合適的研究路徑。

本研究有以下的貢獻：(一) 、從前的研究多只探討關於體育賽事的社交媒體所扮演的角色，而忽略了要比較不同社交媒體平台的需要;(二) 、過去的文獻通常聚焦於單一的賽事或運動上;以及 (三) 、雖然探討關於社交媒體在戰略上和在操作上所扮演的角色的研究為數不少，但甚少研究、就體育賽事大體使用社交媒體的程度，或使用特定的社交媒體平台的程度進行分析和探討。再者，幾乎沒有學者或研究人員在有關的研究上使用指標測量法;就此三點而言，本研究可說填補了有關的研究空白。

As firms consider initiatives to enhance their social sustainability performance, supplier diversity, equity and inclusion (DEI) have become significantly more important. As such, the purpose of this study is to theorize, operationalize and develop an empirical scale to measure supplier DEI.

The following three-phase scale development method was used: first, identification of scale items from the literature; second, a qualitative component involving interviews with expert panels; and third, a psychometric evaluation through two survey rounds with 327 managers from multiple areas of supply chain management.

Although not necessarily a new concept, this study provides a more complete understanding of supplier DEI beyond traditional aspects of supplier diversity (e.g. women and minority-owned suppliers) to feature additional considerations (e.g. LGBTQIAP+) and reflect broader societal considerations, such as human rights. Therefore, validated items for the three dimensions (i.e. diversity, equity [human rights] and inclusion) were identified.

This study provides systematically validated scales to measure supplier DEI based on three dimensions. Each dimension can be developed separately from the others, but they are intertwined, which reinforces the contribution to both scholars and practitioners.

This research aims to extend the research on humorous leadership and the hospitality industry by using the theoretical framework of affective events theory (AET). This research aims to close this gap by recognizing that leaders' humor may inspire pro-social motivation in tourism workers and can harness the ability of employees to offer innovative ideas. The effect of leaders' humor on employees’ pro-social motivation is moderated by the personal need for structure (PNS).

A multi-source time-lagged design was employed in this research. The researchers used survey instruments to collect data from frontline employees and their immediate supervisors working in Pakistan’s two- to five-star hotels. The current study considers 279 useable responses and tested them through Hayes process macros.

Results show that humorous leadership has a significant direct impact on the innovative work behavior (IWB) of hotel employees. Pro-social motivation significantly mediates the relationship between humorous leadership and IWB. Further, the PNS significantly buffers the relationship between humorous leadership and pro-social motivation.

Findings are vital for hotel managers to adopt a more flexible leadership style to promote the pro-social motivation and IWBs of hotel employees.

This is one of the first studies to use pro-social motivation to explain the relationship between humorous leadership and creative work behaviors. Employees' individual needs for structure have also been utilized as a novel boundary condition. The results are essential for hotel managers to adopt a more adaptable leadership style to encourage the staff’s pro-social motivation and creative work behaviors.

This study aims to explore the impact of board size, board gender diversity and federation age on the likelihood of having a female chair in National Sports Federations (NSF).

A quantitative methodology compares 300 sports boards in five countries (Italy, Portugal, Spain, Turkey and the UK), using data collected from NSF’s websites.

The board size and federation age have no significant impact on having a female board chair when the countries and the percentage of female directors are included in the model. When the number of women is measured in absolute value rather than in relative terms, the only variable that predicts a woman chair is the country. When the model does not include country differences, the percentage of female directors is key in predicting a chairwoman, and when the number of women is used as a variable instead of the percentage, a board’s smaller size increases the odds of having a chairwoman.

There are some limitations to this study which we believe provide useful directions for future research. Firstly, the authors have not considered the role of gender typing in sports activities which explains the extent that women participate in specific sports (Sobal and Milgrim, 2019) and the related perception of such sports in society. The social representation of sports activities classified as masculine, feminine or gender-neutral can hypothetically influence women’s access to that specific federations’s leadership. The authors included the country factor only partially, as a control variable, as the social representation of sports usually goes beyond national boundaries.

This study has implications for sport policymakers and stakeholders, and for institutions such as the IOC or the European Union that implement equality policies. If the aim is to increase female presence in the highest position of a sports board and to achieve gender equality more generally, other policies need to be implemented alongside gender quotas for the sports boards, namely, those specifically related to the recruitment and selection of the sports board chairs (Mikkonen et al., 2021). For example, given the implications of critical mass and its ability to increase more female’s engagement then the role of existing chairs acting as mentors and taking initiative in this objective may be warranted. Furthermore, attention should be paid to the existing gender portfolio of each board and its subsequent influence on recruiting a female chair, regardless of the organization’s age. Knoppers et al. (2021) concluded that resistance to gender balance by board members is often related to discriminatory discourses against women. The normalization of the discourses of meritocracy, neoliberalism, silence/passivity about the responsibility of structures and an artificial defence of diversity emphasise that equality should not only be determined by women (Knoppers et al., 2021).

When countries are included in the model, the results suggest that the social representation of a female board member is different from that of a female board chair.

The originality of the study is that it shows the factors that constrain women taking up a chair position on NSFs. Theoretically, it contributes to existing literature by demonstrating how a critical mass of females on boards may also extend to the higher and most powerful position of chair.

The positioning of a tourism destination can easily change due to external uncontrolled factors, such as a pandemic. In this scene, the purpose of this study can be summerized in two main points: to investigate the main topics associated with a religious tourism destination (Vatican City) before and from the pandemic crisis, and to identify potential topics that could be highlighted to reposition this tourism destination more favorably.

The information was extracted from Trip Advisor, specifically from the web Vatican City (7,152 reviews). This information was analyzed using text mining software applied to English text data.

The results show that the image of Vatican City has evolved, from a larger cultural, artistic and historical destination to a destination with a strong religious orientation, probably due to the growing influence of tourists and pilgrims in search of spiritual consolation in a global health crisis. New comments have emerged in the pandemic on topics such as Pope, Catholicism and love.

The authors recommend repositioning this tourism destination under what they have dubbed the umbrella of the three “Rs”: religion, renaissance and relaxation. Also, two outstanding attractions are frequently mentioned by tourists in this more spiritual scenario: Saint Peter’s Basilica and Sistine Chapel.

Studies about religious tourism are scarce, and those considering an urban city as a key religious tourism destination even more.

This paper analyzes how quality management in Ecuador’s national parks is explained through the quality practices contained in Deming’s quality principles from the point of view of employees.

Quantitative research was conducted with the participation of 254 employees from all national parks in Ecuador who rated the quality management practices (leadership, talent management, work climate and training) in their respective parks.

The results show that leadership, talent management, work climate and training significantly explain the service quality in the national parks. This study contributes to the adaptation of Deming’s quality principles to national parks via individual and joint analysis of the relationship between leadership, talent management, work climate and training with service quality in order to highlight which practices are the most important to service quality.

The paper provides a comprehensive overview of the key factors that influence service quality in the National Parks of Ecuador. Its multidisciplinary approach and exhaustive research make this work an invaluable tool for understanding and improving the preservation of natural resources and the tourism experience in these protected areas.

Este trabajo analiza cómo la gestión de la calidad en los parques nacionales del Ecuador se explica a través de las prácticas de calidad recogidas en los principios de la calidad de Deming desde el punto de vista de los empleados.

Se realizó una investigación cuantitativa en la que participaron 254 empleados de todos los parques nacionales del Ecuador quienes valoraron las prácticas de gestión de la calidad (liderazgo, gestión de talento, clima laboral y formación) en sus respectivos parques.

Los resultados muestran que el liderazgo, la gestión del talento, el clima laboral y la formación explican significativamente la calidad de servicio en los parques nacionales. Este estudio contribuye en la adaptación de los principios de calidad de Deming a parques nacionales a través del análisis individual y conjunto de la relación entre liderazgo, gestión de talento, clima laboral y formación con la calidad del servicio para destacar qué prácticas son las más importantes para la calidad del servicio ofrecido.

This paper aims to examine Nigeria’s dynamic output and output volatility connectedness with USA, China and India using quarterly data from 1981Q1 to 2019Q4.

The study adopted the network approach of Diebold and Yilmaz (2014) and used the normalized generalized forecast error variance decomposition from an underlying vector error correction model to build connectedness measures.

The findings show that the global financial crisis (GFC) increased the connectedness index far more than the 2016 Nigeria economic recession. The moderate effect of the 2016 Nigeria economic recession on the connectedness index underscores the fact that Nigeria is a small, open economy with minimal capacity to spread output shock. For both real output and its volatility, the total connectedness index rose smoothly and systematically through time, thereby leaving the economies more connected in the long run.

To the best of the authors’ knowledge, this paper is among the first to examine Nigeria’s dynamic output and output volatility connectedness with the USA, China and India using new empirical insights from the GFC versus 2016 Nigerian recession. The study, therefore, concludes that the Nigerian economy should be diversified immediately as a hedge against future real output shocks, while the USA, China and India should maintain and sustain their current policy frameworks to remain less vulnerable to real output shocks.

This paper aims to study almost Ricci–Yamabe soliton in the context of certain contact metric manifolds.

The paper is designed as follows: In Section 3, a complete contact metric manifold with the Reeb vector field ξ as an eigenvector of the Ricci operator admitting almost Ricci–Yamabe soliton is considered. In Section 4, a complete K-contact manifold admits gradient Ricci–Yamabe soliton is studied. Then in Section 5, gradient almost Ricci–Yamabe soliton in non-Sasakian (k, μ)-contact metric manifold is assumed. Moreover, the obtained result is verified by constructing an example.

We prove that if the metric g admits an almost (α, β)-Ricci–Yamabe soliton with α ≠ 0 and potential vector field collinear with the Reeb vector field ξ on a complete contact metric manifold with the Reeb vector field ξ as an eigenvector of the Ricci operator, then the manifold is compact Einstein Sasakian and the potential vector field is a constant multiple of the Reeb vector field ξ. For the case of complete K-contact, we found that it is isometric to unit sphere S²ⁿ⁺¹ and in the case of (k, μ)-contact metric manifold, it is flat in three-dimension and locally isometric to Eⁿ⁺¹ × Sⁿ(4) in higher dimension.

All results are novel and generalizations of previously obtained results.