Search results

The purpose of this paper is mainly to develop the adjoint method within the method of magnetic moment (MMM) and thus, to provide an efficient new way to solve topology optimization problems in magnetostatic to design 3D-magnetic circuits.

First, the MMM is recalled and the optimization design problem is reformulated as a partial derivative equation-constrained optimization problem where the constraint is the Maxwell equation in magnetostatic. From the Karush–Khun–Tucker optimality conditions, a new problem is derived which depends on a Lagrangian parameter. This problem is called the adjoint problem and the Lagrangian parameter is called the adjoint parameter. Thus, solving the direct and the adjoint problems, the values of the objective function as well as its gradient can be efficiently obtained. To obtain a topology optimization code, a semi isotropic material with penalization (SIMP) relaxed-penalization approach associated with an optimization based on gradient descent steps has been developed and used.

In this paper, the authors provide theoretical results which make it possible to compute the gradient via the continuous adjoint of the MMMs. A code was developed and it was validated by comparing it with a finite difference method. Thus, a topology optimization code associating this adjoint based gradient computations and SIMP penalization technique was developed and its efficiency was shown by solving a 3D design problem in magnetostatic.

This research is limited to the design of systems in magnetostatic using the linearity of the materials. The simple examples, the authors provided, are just done to validate our theoretical results and some extensions of our topology optimization code have to be done to solve more interesting design cases.

The problem of design is a 3D magnetic circuit. The 2D optimization problems are well known and several methods of resolution have been introduced, but rare are the problems using the adjoint method in 3D. Moreover, the association with the MMMs has never been treated yet. The authors show in this paper that this association could provide gains in CPU time.

The role of caregivers and issues of parenting are controversial in research on disability. While appreciating the historical and political reasons to critique power relations in care systems and care relations, we argue that it is important to consider parents' and other caregivers' positions. A reconsideration provides insights into pervasive effects of ableism defining not only the individual child but parents and other relatives as well. We draw from extensive research on couples parenting a child with disability in Germany (Tröndle, 2022a). This study seeks to understand how parents of a child with disability cannot avoid understanding themselves as “special parents.” Through analyzing shared life stories of couples and individual biographies, the study reconstructs how identities evolve differently depending on their work-sharing arrangements. Based on our findings, the couples experience difficulties in maintaining dual employment arrangements. They become “unable” to step outside of the logic of welfare and health provision and structures of the labor market. Couples begin to explain their situation and the discrimination they experience by reflecting themselves as “special parents.” Heteronormative and ableist expectations hinder them in articulating resistance and gaining agency as allies of their children, facilitating positions of complicity. We argue that the approach suggested by this study – namely including the ambiguous situation of caregivers in Disability Studies – can encourage other researchers to consider othering and ableism of and by caregivers.

This paper aims to shed light on the spatial constraints of sex work in Greece. The objective is twofold: to illustrate the intertemporal stance of the Greek state to push sex work at the edge of both the city and the law produces sex workers as always already marginal subjects and to identify how a spatial-based understanding of sex work could help in acknowledging sex workers’ full community citizenship.

This article examines the legal geographies of sex work in modern and contemporary Greece. The author is a doctoral student in critical jurisprudence with a professional background in urban planning law, who also works voluntarily with Athens-based sex worker’s organizations. Law’s materialization within space (Bennet and Layard, 2015, p. 406), namely, the implication of law in the discursive and material production of place, is examined through archival research with primary and secondary sources, including legislations and LGBT publications such as Amfi and Kráximo from the 1980s and 1990s found in the Archives of Contemporary Social History (ASKI) in Athens. Additionally, as the author is currently conducting fieldwork with people who are working or have worked in the past in sex in Greece as a part of her PhD dissertation, the paper contains data provided by ten interlocutors to highlight their own personal experience. The researcher has used the critical oral history method, as it is committed to recording first-hand knowledge of experiences of marginalized community members who are often unheard or untold, with the additional goals of contextualizing these stories to reveal power differences and inequities (Lemley, 2017, Rickard, 2003).

The paper provides insight into how regulationism establishes the brothel – a metonymy of prostitution – as a heterotopia within the urban space. Contemporary approaches, such as LULUs and broken window policies, are used to indicate the historically marginal placement of sex work.

The interviews presented here were conducted in the summer of 2022, in the context of the author’s PhD research. Despite her six years of activist-level involvement with sex workers’ rights organizations, due to ethical constraints, only the findings of interviews conducted up to the writing of this paper are presented here, while details of private discussions with members of these organizations are omitted.

The paper examines a significant and timely matter of place making and spatial justice. Unlike earlier research on prostitution in Greece that focused on the brothel either as a heterotopia or as an undesirable land use, the novelty of this paper is that it highlights the intersections between policing, planning, public hygiene, anti-immigration policies around the regulation of the sex market. By critically discussing the implications of the de facto illegality of sex work in Greece, the study highlights the importance of including the voices of sex workers in decision-making and contributes to the debate around the decriminalization of sex work in Greece.

This study aims to uncover the ongoing discourse on generative artificial intelligence (AI), literacy and governance while providing nuanced perspectives on stakeholder involvement and recommendations for the effective regulation and utilization of generative AI technologies.

This study chooses generative AI-related online news coverage on BBC News as the case study. Oriented by a case study methodology, this study conducts a qualitative content analysis on 78 news articles related to generative AI.

By analyzing 78 news articles, generative AI is found to be portrayed in the news in the following ways: Generative AI is primarily used in generating texts, images, audio and videos. Generative AI can have both positive and negative impacts on people’s everyday lives. People’s generative AI literacy includes understanding, using and evaluating generative AI and combating generative AI harms. Various stakeholders, encompassing government authorities, industry, organizations/institutions, academia and affected individuals/users, engage in the practice of AI governance concerning generative AI.

Based on the findings, this study constructs a framework of competencies and considerations constituting generative AI literacy. Furthermore, this study underscores the role played by government authorities as coordinators who conduct co-governance with other stakeholders regarding generative AI literacy and who possess the legislative authority to offer robust legal safeguards to protect against harm.

Food supply chain resilience is a critical aspect in ensuring the continuous and reliable flow of food, particularly in the face of disruptions. This study aims to address specific gaps in the existing literature by conducting a bibliometric analysis. The primary objective is to identify key areas of concern and lacunae related to disruptions and resilience within the food supply chain. The study also strives to contribute to the field by developing a comprehensive framework that evaluates the factors influencing resilience. Furthermore, the research intends to propose effective strategies for mitigating and recovering from disruptions, emphasizing the urgency of these measures in light of identified gaps in the current body of literature.

To achieve these objectives, the authors extracted the most relevant papers from Scopus and Web of Science (WoS) databases. The analysis parameters included a comprehensive review of current food supply chain practices and an exploration of trending research topics, such as sustainability, adaptability, circular economy and agility. Notably, the study recognized the pervasive impact of COVID-19 on food supply chain disruptions, with a high occurrence in the literature. Using advanced analytics tools like VOSviewer and Biblioshiny, the research delved into the role of modern technologies, including Industry 4.0, the Internet of Things (IoT), artificial intelligence (AI), machine learning (ML) and blockchain in addressing disruptions and enhancing resilience.

The research reveals a significant impact of the COVID-19 pandemic on food supply chain disruptions, underscoring the critical need for strategies to bolster resilience. Notably, the study identifies the pivotal role of modern technologies (Industry 4.0, IoT, AI, ML and blockchain) in mitigating disruptions and enhancing resilience in the food supply chain. The bibliometric analysis conducted through VOSviewer and Biblioshiny provides valuable insights into research trends and focal areas within the literature.

The observed importance of Industry 4.0, IoT, AI, ML and blockchain implies a practical need for integrating these technologies into food supply chain operations. Moreover, the paper discusses strategies for reducing the impact caused by disruptions, providing practical guidance for resilience planning in food supply chains. Researchers can leverage the findings to direct future efforts toward areas with identified gaps and opportunities, fostering advancements in the field and offering practical insights for real-world applications.

By amalgamating insights from bibliometric analysis and the developed framework, this study contributes to a holistic understanding of the challenges and opportunities in fortifying the resilience of the food supply chain. The identified factors and strategies offer valuable insights for researchers and practitioners seeking to address disruptions in food supply chains. The study’s unique contribution lies in bridging theoretical perspectives with practical applications, enhancing the relevance of business-to-business/industrial supply chain theories.

This paper aims to investigate how chief executive officer (CEO) responsible leadership impacts corporate social responsibility (CSR) and organization performance by considering diverse organizational climates (including ethical, service and initiative climates) as mediators and CEO founder status as a moderator.

This study analyzed survey data from 212 service organizations in China with structural equation modeling.

The results clearly established that CEO responsible leadership played a crucial role in augmenting both CSR and organization performance by shaping positive organizational climates. Notably, CEO responsible leadership significantly fostered ethical, service and initiative climates. Furthermore, an ethical climate promoted CSR and organization performance, whereas service and initiative climates specifically enhanced organization performance. Additionally, responsible CEOs with founder status exhibited a higher propensity for enhancing ethical, service and initiative climates within service organizations.

Service organizations should take measures to build CEO responsible leadership, especially for CEOs with founder status. Furthermore, service organizations should motivate employees to reach consensus on ethical conducts, superior service and proactive approach to work.

First, the findings on CEO responsible leadership’s effects on CSR and organization performance extend the research on responsible leadership outcomes. Second, this paper adds to responsible leadership literature through exploring the mediating effects of ethical, service and initiative climates. Finally, the finding on the moderating role of founder CEOs offers a novel perspective regarding the boundary condition of the effects of CEO responsible leadership.

The purpose of the present paper is to provide a systematic overview of dimensions that need to be enfolded or considered in microfinance policies and strategies designs as well as impact studies aiming to empower or assess the empowerment of a specific category of women, namely women entrepreneurs. Afterward, the study aims to suggest some directions for future studies.

To meet its purpose, the paper applies the systematic review approach. The applied methodology follows guidelines for systematic reviews of social and economic interventions as set out by the Preferred Reporting Items for Systematic Reviews and Meta-Analysis (PRISMA). More specifically, the authors examine 87 empirical papers from 6 databases investigating the impact of microfinance institutions on the empowerment of women entrepreneurs.

Overall, findings of the study suggest that dimensions of the empowerment of women entrepreneurs are formed and conditioned by normative, cognitive and regulative institutional logics. Additionally, the systematic review suggests key research avenues and calls for more inclusive empirical studies in terms of geographical coverage, microfinance services/products assessed and method designs applied.

Findings of the current review provide clear theoretical contribution and useful practical implications in the field of microfinance and the empowerment of women entrepreneurs. On the one hand, the study suggests to scholars key avenues for future studies likely to bring new insights in terms of theory, context and methods. On the other hand, this study extents the understanding of microfinance practitioners on the concept of women empowerment as the field of female entrepreneurship is concerned. This implication is likely to enable the design of appropriate microfinance strategies and policies, allowing women entrepreneurs to achieve an overall empowerment.

The present paper contributes to the debate around the multidimensionality of the concept, “women empowerment.” The multidimensional nature of the addressed concept is well established in the existing literature. However, to the best of the authors’ knowledge, no study has provided a conceptual analysis of empowerment dimensions of a particular category of women, namely women entrepreneurs. Unlike most of the studies assuming that all women face identical challenges, the present paper brings new insights on the topic as it is built on a different assumption. The paper takes ground from the institutional theory and applies it to the specific case of female entrepreneurship.

Drawing from the resource-based view (RBV), this study aims to develop a parsimonious model in the context of digital platforms that links strategic network resources (SNR) and firm performance through considering dynamic capabilities (DC) as important mediating mechanisms. In addition, we also investigate how platform monitoring shapes the relationship between SNR and DC.

This study uses the survey data from 162 firms in eastern China.

The findings indicate that both two DC dimensions (i.e., sensing and reconfiguring) significantly mediate the relationship of SNR-performance. Moreover, platform monitoring positively moderates the relationship of SNR and sensing as well as SNR and reconfiguring.

With these findings, this study advances SNR and digital platform research and provides insights into how to transform SNR into superior performance through DC.