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Article
Publication date: 13 December 2022

Zhenhua Luo, Juntao Guo, Jianqiang Han and Yuhong Wang

Prefabricated technology is gradually being applied to the construction of subway stations due to its characteristic of mechanization. However, the prefabricated subway station in…

Abstract

Purpose

Prefabricated technology is gradually being applied to the construction of subway stations due to its characteristic of mechanization. However, the prefabricated subway station in China is in the initial stage of development, which is prone to construction safety issues. This study aims to evaluate the construction safety risks of prefabricated subway stations in China and formulate corresponding countermeasures to ensure construction safety.

Design/methodology/approach

A construction safety risk evaluation index system for the prefabricated subway station was established through literature research and the Delphi method. Furthermore, based on the structure entropy weight method, matter-element theory and evidence theory, a hybrid evaluation model is developed to evaluate the construction safety risks of prefabricated subway stations. The basic probability assignment (BPA) function is obtained using the matter-element theory, the index weight is calculated using the structure entropy weight method to modify the BPA function and the risk evaluation level is determined using the evidence theory. Finally, the reliability and applicability of the evaluation model are verified with a case study of a prefabricated subway station project in China.

Findings

The results indicate that the level of construction safety risks in the prefabricated subway station project is relatively low. Man risk, machine risk and method risk are the key factors affecting the overall risk of the project. The evaluation results of the first-level indexes are discussed, and targeted countermeasures are proposed. Therefore, management personnel can deeply understand the construction safety risks of prefabricated subway stations.

Originality/value

This research fills the research gap in the field of construction safety risk assessment of prefabricated subway stations. The methods for construction safety risk assessment are summarized to establish a reliable hybrid evaluation model, laying the foundation for future research. Moreover, the construction safety risk evaluation index system for prefabricated subway stations is proposed, which can be adopted to guide construction safety management.

Details

Engineering, Construction and Architectural Management, vol. 31 no. 4
Type: Research Article
ISSN: 0969-9988

Keywords

Content available
Article
Publication date: 12 March 2024

Laharish Guntuka, Prabhjot S. Mukandwal, Emel Aktas and Vamsi Sai Krishna Paluvadi

We conduct a multidisciplinary systematic literature review on climate neutrality in the supply chain. While carbon neutrality has gained prominence, our study argues that…

Abstract

Purpose

We conduct a multidisciplinary systematic literature review on climate neutrality in the supply chain. While carbon neutrality has gained prominence, our study argues that achieving carbon neutrality alone is not enough to address climate change effectively, as non-CO2 greenhouse gases (GHG) are potent contributors to global warming.

Design/methodology/approach

We used multiple databases, including EBSCO, ProQuest, Science Direct, Emerald and Google Scholar, to identify articles related to climate neutrality in the context of non-CO2 gases. A total of 71 articles in environmental science, climate change, energy systems, agriculture and logistics are reviewed to provide insights into the climate neutrality of supply chains.

Findings

We find that, in addition to CO2, other GHG such as methane, nitrous oxide, ozone and fluorinated gases also significantly contribute to climate change. Our literature review identified several key pillars for achieving net-zero GHG emissions, including end-use efficiency and electrification, clean electricity supply, clean fuel supply, “GHG capture, storage and utilization,” enhanced land sinks, reduced non-CO2 emissions and improved feed and manure management.

Originality/value

We contribute to the literature on climate neutrality of supply chains by emphasizing the significance of non-CO2 GHG along with CO2 and highlighting the need for a comprehensive approach to climate neutrality in addressing climate change. This study advances the understanding of climate neutrality of supply chains and contributes to the discourse on effective climate change mitigation strategies. It provides clear future research directions.

Details

The International Journal of Logistics Management, vol. 35 no. 3
Type: Research Article
ISSN: 0957-4093

Keywords

Open Access
Article
Publication date: 11 April 2024

Stella Lippolis, Dario Dell’Osa and Ezio Ritrovato

Through the reconstruction of the events of some foreign entrepreneurs who worked in the territory of the Italian city of Bari in the first half of the 19th century, this paper…

Abstract

Purpose

Through the reconstruction of the events of some foreign entrepreneurs who worked in the territory of the Italian city of Bari in the first half of the 19th century, this paper aims to analyze the role of entrepreneurial migration in the economic development of Apulia land in this period.

Design/methodology/approach

This study adopts a theoretical framework that combines the concept of mixed embeddedness in a multifocal perspective, with the model of the diffusion of innovation focusing on the role of the so-called agency of actors, and of the network, in the dissemination of innovation. The theoretical framework is applied to multiple case studies to compare the evidence that emerged from the simultaneous analysis of several situations.

Findings

By analyzing how innovations have spread within the network of entrepreneurs of that time, it is possible to identify some relevant aspects related to the mechanisms of dissemination of innovations in the context of entrepreneurial migration. Specifically, the opportunity structure is intended in an even broader sense than indicated in the classic approach to mixed embeddedness: it is considered as the result of the joint interaction of the political, institutional and economic context of several places, and the behavioral dynamics of several groups.

Research limitations/implications

Due to the specific method chosen, the outcomes of the research might apply to a narrow context. Therefore, the results need to be tested and confirmed in further empirical studies, and by applying multiple research methods.

Practical implications

Findings are useful and significant in the analysis of the link that exists between the diffusion of innovations and migrant entrepreneurship, and then the conclusions can be applied and extended to the current phenomenon of migration-related innovations, with specific reference to developing countries.

Social implications

Findings can be applied and extended to the current phenomenon of migration-related innovations and highly skilled migration, with specific reference to developing countries.

Originality/value

This paper contributes to shed new light on the contextual and multifocal factors that influence the development of innovations in the networks of migrant entrepreneurship, in a specific historical period and a specific context. Combining social, human and financial capital with the wider opportunity structure, this study also provides a comprehensive understanding of the modalities through which migrant and high-skilled entrepreneurs could innovate.

Details

Journal of Management History, vol. ahead-of-print no. ahead-of-print
Type: Research Article
ISSN: 1751-1348

Keywords

Article
Publication date: 11 March 2024

Jianjun Yao and Yingzhao Li

Weak repeatability is observed in handcrafted keypoints, leading to tracking failures in visual simultaneous localization and mapping (SLAM) systems under challenging scenarios…

Abstract

Purpose

Weak repeatability is observed in handcrafted keypoints, leading to tracking failures in visual simultaneous localization and mapping (SLAM) systems under challenging scenarios such as illumination change, rapid rotation and large angle of view variation. In contrast, learning-based keypoints exhibit higher repetition but entail considerable computational costs. This paper proposes an innovative algorithm for keypoint extraction, aiming to strike an equilibrium between precision and efficiency. This paper aims to attain accurate, robust and versatile visual localization in scenes of formidable complexity.

Design/methodology/approach

SiLK-SLAM initially refines the cutting-edge learning-based extractor, SiLK, and introduces an innovative postprocessing algorithm for keypoint homogenization and operational efficiency. Furthermore, SiLK-SLAM devises a reliable relocalization strategy called PCPnP, leveraging progressive and consistent sampling, thereby bolstering its robustness.

Findings

Empirical evaluations conducted on TUM, KITTI and EuRoC data sets substantiate SiLK-SLAM’s superior localization accuracy compared to ORB-SLAM3 and other methods. Compared to ORB-SLAM3, SiLK-SLAM demonstrates an enhancement in localization accuracy even by 70.99%, 87.20% and 85.27% across the three data sets. The relocalization experiments demonstrate SiLK-SLAM’s capability in producing precise and repeatable keypoints, showcasing its robustness in challenging environments.

Originality/value

The SiLK-SLAM achieves exceedingly elevated localization accuracy and resilience in formidable scenarios, holding paramount importance in enhancing the autonomy of robots navigating intricate environments. Code is available at https://github.com/Pepper-FlavoredChewingGum/SiLK-SLAM.

Details

Industrial Robot: the international journal of robotics research and application, vol. 51 no. 3
Type: Research Article
ISSN: 0143-991X

Keywords

Open Access
Book part
Publication date: 21 May 2024

Loes van Beuningen

High turnover rates, delay and dissatisfaction among PhD students about the high efforts and low rewards are common problems in doctoral education. Research shows that many…

Abstract

High turnover rates, delay and dissatisfaction among PhD students about the high efforts and low rewards are common problems in doctoral education. Research shows that many different factors are associated with the mental health crisis in graduate education, but these diverse aspects have not often been studied in relation to talent management and human resource management (HRM) strategies. Based on questionnaires and in-depth interviews, this chapter critically assesses the factors that influence doctoral students’ well-being, using as theoretical framework the self-determination theory, concerned with the social and other conditions that facilitate or hinder human well-being and flourishing, and the job demands–resources model, an occupational stress model that suggests strain is a response to imbalance between demands on the individual and the resources he or she has to deal with those demands. These theoretical frameworks help to explore the perceived job demands and resources, and motivations of a sample of 25 PhD students in the Netherlands, in order to recommend adequate talent management strategies to improve PhD work conditions at universities and reduce the increasing levels of ill-being. The study proposes a collegial model, focussing on the enjoyment of work, instead of the current managerial model, which focusses on strengthening knowledge and skills, and stimulating performance-oriented behaviour. A differentiated approach is needed, offering customized talent development for each PhD student in order to respond to his or her specific qualities, improving general well-being. This radical shift in talent management is needed to counter the mental health crisis in doctoral studies.

Article
Publication date: 23 April 2024

Phyllis Tharenou

Skilled migrant (SM) women play a key role in developed countries especially in healthcare and education in easing staffing shortages and migrate expecting to gain…

Abstract

Purpose

Skilled migrant (SM) women play a key role in developed countries especially in healthcare and education in easing staffing shortages and migrate expecting to gain qualification-matched employment (QME). The aim of this review is to assess whether SM women gain the anticipated QME, equitably compared to their skilled counterparts and to examine why and how they do so.

Design/methodology/approach

I conducted a systematic literature review to derive empirical studies to assess if, why and how SM women achieve QME (1) using SM women-only samples and comparative samples including SM women, and (2) examining whether they gain QME directly on or soon after migration or indirectly over time through undertaking alternative, contingent paths.

Findings

Only a minority of SM women achieve the anticipated QME directly soon after migration and less often than their skilled counterparts. Explaining the mechanism for achieving QME, other women, especially due to having young families, indirectly undertake alternative, lower-level contingent paths enabling them to ascend later to QME.

Originality/value

The SM literature gains new knowledge from revealing how SM women can gain positions post-migration comparable to their pre-migration qualifications through undertaking the alternative, contingent paths of steppingstone jobs and academic study, especially as part of agreed familial strategies. This review results in a theoretical mechanism (mediation by a developmental contingency path) to provide an alternative mechanism by which SM women achieve QME.

Details

Journal of Global Mobility: The Home of Expatriate Management Research, vol. ahead-of-print no. ahead-of-print
Type: Research Article
ISSN: 2049-8799

Keywords

Case study
Publication date: 6 May 2024

Stephanie Elizabeth E. Raible

This case is based on primary and secondary data collection. ABCo’s Founder, Jocelyn Sheppard, sat down with the author for a 75-min recorded interview in July 2022, and she…

Abstract

Research methodology

This case is based on primary and secondary data collection. ABCo’s Founder, Jocelyn Sheppard, sat down with the author for a 75-min recorded interview in July 2022, and she provided follow-up information via email. Interview data was supplemented with secondary data from publicly available sources to fill in portions on the founder, the company’s history and its location; and triangulate the collected interview data (Creswell and Poth, 2018). There are no conflicts of interest that the author needs to disclose related to the founder or company.

The case was piloted at one institution in the Fall 2022, Spring 2023 and Fall 2023 semesters, with 59 undergraduates in an in-person social entrepreneurship course and 165 undergraduates and 33 graduate students in an online asynchronous social entrepreneurship course. All students worked through the case in groups, and as a requirement of their corresponding assignment submission, they provided feedback that was de-identified. In total, 60 groups reported their feedback, which was considered during the subsequent drafts of the case and instructors’ manual IM.

According to the anonymized feedback, the protagonist, product line, desired social impact and experienced challenges of ABCo were all said to be interesting, approachable and relatable for students, and the case piqued the interest of students coming from different majors (e.g. business, environmental issues, human services and criminal justice). Students from rural areas, or those who have family in rural areas, felt the case was particularly interesting; a handful of the students in the asynchronous online class who were unfamiliar with such settings suggested providing students with some additional contextualization of rural environments, either through class discussion with other students who had experience in those environments or additional media or text-based supports. Further adjustments also included removing a reading and a corresponding question and revising elements within the Teaching Approaches section of the IM to support the additions they suggested within the feedback (i.e. spending time to define and walk through the provided model and highlight the differences of rural entrepreneurship and entrepreneurship in the rural as a class before engaging in the related write-ups for that question).

Case overview/synopsis

Jocelyn Sheppard, Founder of Appalachian Botanical Company (“ABCo”), had built her company not just on a vision of revitalizing reclaimed coal mine land through planting and producing products with lavender, but also to have a social impact on the rural town of Ashford and its greater region of Boone County in West Virginia, USA. While she understood that hiring workers in need of a second chance would present its challenges, she was shocked by the depth of social need her new employees presented, which contributed to many employees’ disruptive behaviors and turnover. To approach the problem at hand, Sheppard needed to reflect on the resources around her, namely, other entities and organizations who might be able to support her efforts to improve how ABCo delivers on its social mission and, thus, helps to improve the local community and its economy. The case draws upon literature and models within rural entrepreneurship and community development to have students advise Sheppard on what she should do next to improve the social outcomes for ABCo and its employees.

Complexity academic level

This case is geared for both upper-level undergraduate and graduate courses in entrepreneurship, including in social, environmental and rural entrepreneurship courses and course modules. The case introduces students to a social enterprise struggling to get its footing in a rural context. The case would be suitable for both introductory and advanced courses, especially when placemaking/place-based entrepreneurship or ecosystem building are discussed.

Details

The CASE Journal, vol. ahead-of-print no. ahead-of-print
Type: Case Study
ISSN: 1544-9106

Keywords

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