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Article
Publication date: 29 March 2024

Hubannur Seremet and Nazim Babacan

This paper aims to examine the static compression characteristics of cell topologies in body-centered cubic with vertical struts (BCCZ) and face-centered cubic with vertical…

Abstract

Purpose

This paper aims to examine the static compression characteristics of cell topologies in body-centered cubic with vertical struts (BCCZ) and face-centered cubic with vertical struts (FCCZ) along with novel BCCZZ and FCCZZ lattice structures.

Design/methodology/approach

The newly developed structures were obtained by adding extra interior vertical struts into the BCCZ and FCCZ configurations. The samples, composed of the AlSi10Mg alloy, were fabricated using the selective laser melting (SLM) additive manufacturing technique. The specific compressive strength and failure behavior of the manufactured lattice structures were investigated, and comparative analysis among them was done.

Findings

The results revealed that the specific strength of BCCZZ and FCCZZ samples with 0.5 mm strut diameter exhibited approximately a 23% and 18% increase, respectively, compared with the BCCZ and FCCZ samples with identical strut diameters. Moreover, finite element analysis was carried out to simulate the compressive response of the lattice structures, which could be used to predict their strength and collapse mode. The findings showed that while the local buckling of lattice cells is the major failure mode, the samples subsequently collapsed along a diagonal shear band.

Originality/value

An original and systematic investigation was conducted to explore the compression properties of newly fabricated lattice structures using SLM. The results revealed that the novel FCCZZ and BCCZZ structures were found to possess significant potential for load-bearing applications.

Details

Rapid Prototyping Journal, vol. ahead-of-print no. ahead-of-print
Type: Research Article
ISSN: 1355-2546

Keywords

Article
Publication date: 21 February 2024

Mohan Kumar K and Arumaikkannu G

The purpose of this paper is to compare the influence of relative density (RD) and strain rates on failure mechanism and specific energy absorption (SEA) of polyamide lattices…

Abstract

Purpose

The purpose of this paper is to compare the influence of relative density (RD) and strain rates on failure mechanism and specific energy absorption (SEA) of polyamide lattices ranging from bending to stretch-dominated structures using selective laser sintering (SLS).

Design/methodology/approach

Three bending and two stretch-dominated unit cells were selected based on the Maxwell stability criterion. Lattices were designed with three RD and fabricated by SLS technique using PA12 material. Quasi-static compression tests with three strain rates were carried out using Taguchi's L9 experiments. The lattice compressive behaviour was verified with the Gibson–Ashby analytical model.

Findings

It has been observed that RD and strain rates played a vital role in lattice compressive properties by controlling failure mechanisms, resulting in distinct post-yielding responses as fluctuating and stable hardening in the plateau region. Analysis of variance (ANOVA) displayed the significant impact of RD and emphasised dissimilar influences of strain rate that vary to cell topology. Bending-dominated lattices showed better compressive properties than stretch-dominated lattices. The interesting observation is that stretch-dominated lattices with over-stiff topology exhibited less compressive properties contrary to the Maxwell stability criterion, whereas strain rate has less influence on the SEA of face-centered and body-centered cubic unit cells with vertical and horizontal struts (FBCCXYZ).

Practical implications

This comparative study is expected to provide new prospects for designing end-user parts that undergo various impact conditions like automotive bumpers and evolving techniques like hybrid and functionally graded lattices.

Originality/value

To the best of the authors' knowledge, this is the first work that relates the strain rate with compressive properties and also highlights the lattice behaviour transformation from ductile to brittle while the increase of RD and strain rate analytically using the Gibson–Ashby analytical model.

Details

Rapid Prototyping Journal, vol. ahead-of-print no. ahead-of-print
Type: Research Article
ISSN: 1355-2546

Keywords

Article
Publication date: 5 May 2023

Yonghui Wu, Xuemei Xie, Carlos Lassala and Samuel Ribeiro-Navarrete

Given that women around the world face more exclusion in terms of limited access to economic and innovation activities than men do, it is understandable that some female-led…

Abstract

Purpose

Given that women around the world face more exclusion in terms of limited access to economic and innovation activities than men do, it is understandable that some female-led start-ups in weak institutional environments engage in bribery to help reduce the difficulties they encounter in the face of intense business competition. However, the link between bribery and product innovation performance is unclear. The purpose of this study is to investigate the relationship between bribery and product innovation performance for female-led start-ups, as well as the roles of institutional support and self-control in this link.

Design/methodology/approach

This empirical study evaluates survey data from female-led manufacturing start-ups in China's Yangtze River Delta region to investigate the relationship between bribery and product innovation performance.

Findings

This research shows that bribery has an inverted U-shaped impact on product innovation performance in female-led manufacturing start-ups, meaning that the product innovation performance of these firms initially increases but then decreases as the bribery intensity (i.e. the frequency and amount of bribes) increases. The authors also focus on the roles of institutional support and self-control in this link, where the authors find that this relationship is steeper for firms with strong institutional support, as well as for individual female entrepreneurs who have high levels of self-control.

Practical implications

The findings of this study indicate that policymakers should undertake efforts to improve institutional quality (e.g. increasing clarity around decisions, providing more institutional support, etc.) and to guide female entrepreneurs to cultivate higher levels of self-control, as such efforts would reduce the appeal of, and the opportunity for, bribery.

Originality/value

To date, very few studies focus specifically on female-led enterprises in the field of bribery research. The research findings presented here on the effect of bribery in female-led start-ups on firm product innovation performance are useful to researchers, policymakers and businesspeople, as they provide a better understanding of bribery in female-led start-ups in China, which can also be extrapolated to encompass other transition economy contexts.

Details

Management Decision, vol. ahead-of-print no. ahead-of-print
Type: Research Article
ISSN: 0025-1747

Keywords

Article
Publication date: 25 August 2023

Philip Cooke

The purpose here is to show how the “shadow” economy has grown in scale and impetus in recent years, though even before modern times it has been present (e.g. the City of London…

Abstract

Purpose

The purpose here is to show how the “shadow” economy has grown in scale and impetus in recent years, though even before modern times it has been present (e.g. the City of London, Shaxson, 2011) since at least the middle ages. The reasons for this have become complicated, but we can identify some “deep structures” that are common. Firstly, “globalisation” made it easier for multinationals to escape national regulatory regimes. Secondly, one of the ways neoliberal trading regulations allowed such actors to augment their assets was by means of what they initially called “transfer-pricing” but which now is officially known as “profit shifting” through tax havens. Thirdly, the growth in international trade in legal and illegal ways caused money laundering – even by otherwise respectable banks – to grow across borders. Conversely, from the supply-side, tax haven status was increasingly accessed by jurisdictions that sought to achieve economic growth by supplying tax haven services, both Delaware and Ireland as exemplars of a “developmental” fiscal policy.

Design/methodology/approach

This paper adopts a “pattern recognition” design, an approach that is abductive, meaning interpretive, as shown in the observation that explanation can be valid or reliable without direct observation. This is shown in the indirect observation that “rain fell because the terrace has puddles” or “ancient glaciers once carved this valley”.

Findings

Reviewing the European Union’s (EU) list of non-co-operating jurisdictions in support of the OECD’s review of base erosion and profit-shifting activity, Collin concluded the EU’s listing “moved the needle” somewhat but was only a modest success. This is because of its reluctance to sanction its own members or large economies like the USA. Data on foreign direct investment and offshore banking assets suggest listed jurisdictions did not suffer notably from being named and shamed. In all cases studied, this contribution found legally damaging, fraudulent, conflict of interest and corrupt practice activities everywhere.

Originality/value

The originality is found in three spheres. Firstly, the pattern recognition method was vindicated in yielding hard to research results. Secondly, the “assemblage-thirdspace” theory was found advantageous in demonstrating the uneven geography of tax haven clusters and their common history in turbocharging economic development. Finally, the empirics showed the ruses executed by cluster members in tax havens to circumvent the law from global management consultancies to micro-firms consisting of tax lawyers and other experts interacting in knowledge supply chains of dubious morality.

Details

Competitiveness Review: An International Business Journal , vol. ahead-of-print no. ahead-of-print
Type: Research Article
ISSN: 1059-5422

Keywords

Article
Publication date: 24 October 2023

Aliaa M. Kamal and Hisham S. Gabr

The purpose of this study is to explore the design of outdoor play spaces in Cairo that provide an enjoyable play experience, along with opportunities for enhancing child social…

Abstract

Purpose

The purpose of this study is to explore the design of outdoor play spaces in Cairo that provide an enjoyable play experience, along with opportunities for enhancing child social and cognitive developmental skills through play features incorporated in their play spaces to achieve this goal.

Design/methodology/approach

The study adopts a qualitative methodology to examine the effectiveness of natural, customized and elevated features on social and cognitive play behaviors of 6–8 year-olds. Data were gathered in three different play settings; a play space inside a social club, a park and a schoolyard. Data gathering relied on observations, written descriptions of play patterns and recordings of children's conversations. Additionally, the researcher utilized sketching diagrams to illustrate children's preferences for play with each feature.

Findings

The results of the study indicate that incorporating natural, elevated and customized play features into children's play spaces can enhance their environment and provide opportunities for fostering their social and cognitive skills.

Research limitations/implications

This study reports the occurrence of indicative behaviors and not the exact measurement of skill development. Research involving children can have limitations in terms of reliability of results due to slight variations affected by unmeasurable circumstances.

Originality/value

The study makes a valuable contribution towards enhancing the quality of children's play spaces in Cairo by emphasizing the significance of providing opportunities for social and cognitive in addition to physical play.

Details

Archnet-IJAR: International Journal of Architectural Research, vol. ahead-of-print no. ahead-of-print
Type: Research Article
ISSN: 2631-6862

Keywords

Article
Publication date: 25 March 2024

Lama Abu Alieh, M. Reza Hosseini, Igor Martek, Wei Wu and Mehrdad Arashpour

A lack of suitably qualified Building Information Modelling (BIM) professionals is understood to be a major barrier towards higher uptakes of BIM in the Australian construction…

Abstract

Purpose

A lack of suitably qualified Building Information Modelling (BIM) professionals is understood to be a major barrier towards higher uptakes of BIM in the Australian construction industry. In response, Australian universities have tried to integrate the teaching of BIM into construction-related curricula, but with limited success. The acknowledged impediment is the lingering mismatch between what universities offer and what industry actually needs. However, the exact nature of that mismatch has yet to be identified. This study addresses that knowledge gap. It assesses both the current status of BIM competencies among university graduates and explores how BIM education at Australian universities may be improved to deliver BIM work readiness, as required by the industry.

Design/methodology/approach

This paper employed a qualitative research approach, utilizing 17 semi-structured interviews with experts in the Australian BIM industry. The Person-Organization (PO) fit theory, which emphasizes the congruence between individual and organizational characteristics, was utilized as a theoretical framework to examine the compatibility between “demand” and “ability” perspectives. The resulting data were analysed using this theoretical framework to gain insights into the PO fit perspectives in relation to BIM industry practices.

Findings

Findings reveal that graduates are generally competent regarding the use of BIM software. However, employers require much more than software skills, and expect recruits to have the capability to implement BIM as a process according to information management standards. Specifically, graduates are significantly deficient in matters of BIM protocols, collaboration and coordination, information workflows as well as completion and handover procedures.

Originality/value

This study is the first of its kind that bridges the gap between industry expectations and university education, in the Australian context, moving beyond the common discourse in education literature, which is exclusively focused on assessing students’ perceptions about BIM.

Details

Engineering, Construction and Architectural Management, vol. ahead-of-print no. ahead-of-print
Type: Research Article
ISSN: 0969-9988

Keywords

Article
Publication date: 28 December 2023

Elizabeth Yeager Washington and Travis Logan Seay

The authors describe an original unit plan that draws from local and national concerns for truthful history education about the history of racial violence in the United States…

Abstract

Purpose

The authors describe an original unit plan that draws from local and national concerns for truthful history education about the history of racial violence in the United States. The unit plan contextualizes one impetus for truth and reconciliation in a community with a history of anti-Black violence.

Design/methodology/approach

The participants partnered with the Equal Justice Initiative to pilot the unit in their district’s new African American History course. The unit drew on historical research and cultural memory to situate local history within a broader context of racism and violence.

Findings

The teachers identified eight goals for the unit so that students could understand racialized violence, acknowledge racism as the lived experience of many of their students, and participate in a collaborative learning environment with productive discussions. Speaking from their own experiences with racism, and creating opportunities for students to do the same, the teachers aided the community in voicing long-silenced memories.

Research limitations/implications

Besides bridging some of the gaps between local, regional, and national histories, more research is needed to further examine historical trauma and its implications for both the past and present, in order to amplify and humanize experiences of racism. Additional research is a critical step in developing more thoughtful, empathic and holistic discussions of history and racism at the local level.

Practical implications

In the wake of the recent past, the authors have learned that teaching about the history of racial violence can be enhanced and empowered by reference to relevant current events. The resurgence of racially charged language and violence over the past few years makes this goal more urgent than ever. This unit gives practical guidance to teachers who face this challenge.

Social implications

The sociopolitical reality of historical trauma and racism must be confronted, and proximity to key events is important in conveying the urgency of racial violence and the need for history education that addresses it. Teachers are making difficult decisions about their options for teaching about race, and they are understandably concerned about any perceived missteps. Nonetheless, inclusive, truthful history education is an appropriate and essential response to narratives of exclusion and silence as the authors help students to develop deliberative skills concerning difficult topics such as racial violence. Teachers and students, together, can do the crucial work of remembering.

Originality/value

The stripping away of narrative agency, identity and history can cover up stories about the stripping away of life and dignity. In the unit plan, the authors recognize truth and reconciliation—especially in the education of people who have relatively little exposure to topics of race and racism—as elemental to a restorative stance against racism.

Details

Social Studies Research and Practice, vol. ahead-of-print no. ahead-of-print
Type: Research Article
ISSN: 1933-5415

Keywords

Article
Publication date: 13 May 2022

Ana Clara Mourão Moura, Camila Fernandes de Morais and Tiago Augusto Gonçalves Mello

There are countless challenges concerning the process of interest mediation. Regarding territorial planning, the participation of different stakeholders is essential. In this…

Abstract

Purpose

There are countless challenges concerning the process of interest mediation. Regarding territorial planning, the participation of different stakeholders is essential. In this sense, Geodesign is a method that supports decision-making based on geocollaboration and co-creation, using geospatial data and tools. The purpose of this study was to use the method to support the co-creation of environmental projects and policies climate-oriented for the Iron Quadrangle region, Brazil.

Design/methodology/approach

The Brazilian platform of Geodesign, GISColab, was used to support the activity. The experiment involved undergraduate and graduate students in Urban Planning and in Geography and technicians that work with planning subjects. Social isolation measures imposed by the pandemic resulted in an adaptation of the dynamic, which was held entirely online.

Findings

The study group proposed 28 designs, in which the most discussed topics were landscape (43%), climate (25%) and risk (25%). This may be associated with the fact that the workshop was conducted in consideration of the UN's Sustainable Development Goals (SDGs) and the environmental crisis, but it might also suggest the group’s prior concern with such issues. Other SDGs were contemplated, with the productive sector as the most negatively impacted by proposals. This situation reinforces the importance of incorporating different actors (a term used for participants in the Geodesign method, referring to representatives from groups of the society) into planning processes. Geodesign was easily accepted and assimilated by participants.

Originality/value

The proposed methodology proved to be positive for this type of study and GISColab, the Brazilian Geodesign platform, was easily adapted to the characteristics and demands of the experience.

Details

International Journal of Building Pathology and Adaptation, vol. ahead-of-print no. ahead-of-print
Type: Research Article
ISSN: 2398-4708

Keywords

Open Access
Article
Publication date: 13 February 2024

Seungjae Shin

The purpose of this study is to compare the competition and productivity of the US freight rail transportation industry for the past 41 years (1980 ∼ 2020), which consists of the…

141

Abstract

Purpose

The purpose of this study is to compare the competition and productivity of the US freight rail transportation industry for the past 41 years (1980 ∼ 2020), which consists of the two periods, before and after the abolishment of the Interstate Commerce Commission (ICC) in 1995.

Design/methodology/approach

This study investigates any relationships between the market concentration index values and labor productivity values in the separate two periods, and how the existence of a regulatory body in the freight transportation market impacted the productivity of the freight rail transportation industry by using a Cobb–Douglas production function on annual financial statement data from the US stock exchange market.

Findings

This study found that, after the abolishment of the ICC: (1) the rail industry became less competitive, (2) even if the rail industry had an increasing labor productivity trend, there was a strong negative correlation between the market concentration index and labor productivity and (3) the rail industry’s total factor productivity was decreased.

Originality/value

This study is to find empirical evidence of the effect of the ICC abolishment on the competition and productivity levels in the US freight rail transportation industry using a continuous data set of 41-year financial statements, which is unique compared to previous studies.

Details

Journal of International Logistics and Trade, vol. ahead-of-print no. ahead-of-print
Type: Research Article
ISSN: 1738-2122

Keywords

Article
Publication date: 11 December 2023

Joshua L. Kenna and Dennis Mathew Stevenson

Geography is an exciting discipline involving the interrogation of place, space, and mobility. Film is too powerful and assessable tool that engages audiences. Therefore, this…

Abstract

Purpose

Geography is an exciting discipline involving the interrogation of place, space, and mobility. Film is too powerful and assessable tool that engages audiences. Therefore, this article builds a rationale for utilizing film in the teaching of geography. Particularly geographic mobility, which is the study of spatial patterns of movement and viewing them with positive or negative social meaning and as embedded within structures of power.

Design/methodology/approach

This is not a research paper so there is no methodology to detail.

Findings

This is not a research paper so there are no findings to detail.

Originality/value

The article introduces three films (Selma, Hidden Figures, and The Green Book) and describes how they can be used to enrich the teaching of geographic mobility.

Details

Social Studies Research and Practice, vol. ahead-of-print no. ahead-of-print
Type: Research Article
ISSN: 1933-5415

Keywords

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