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Article
Publication date: 24 May 2013

Tiago R. Cesa and Branca F. Oliveira

The purpose of this paper is to present a finite element simulation to validate the strength and energy absorption capacity of a rollover protective structure (ROPS) of…

253

Abstract

Purpose

The purpose of this paper is to present a finite element simulation to validate the strength and energy absorption capacity of a rollover protective structure (ROPS) of agricultural tractors. The test consists of four steps: rear loading, crushing of the rear columns, side loading and crushing of the front columns. In this study a new design of a cabin for narrow tractors was simulated and from it the computational test was run for validation of the cabin. The simulation was performed using ANSYS software, considering the nonlinear characteristics of the materials, since during the test the plastic limit is reached. With the computational results, it was possible to predict the behavior of the structure before the real test. These results were used to propose design and materials changes that significantly improved the energy absorption, making it more efficient. The proposed cabin design reaches the energies and forces required in each step of the computational simulation of the ROPS test and the deformation needed to achieve them does not cause any cabin part to enter the operator survival space inside the cabin.

Design/methodology/approach

In the present study, numerous finite elements simulations have been carried out on a narrow cab for tractors.

Findings

It was conclude that it is possible to virtually test the ROPS, making material and design changes in order to have a more adequate structure before a first real test.

Originality/value

The present study is part of Tiago R. Cesa's Master thesis, an original research work.

Details

International Journal of Structural Integrity, vol. 4 no. 2
Type: Research Article
ISSN: 1757-9864

Keywords

Abstract

Details

Tourism Risk
Type: Book
ISBN: 978-1-80117-709-2

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Article
Publication date: 25 May 2012

Luiz Antônio Bragança da Cunda, Branca Freitas de Oliveira and Guillermo Juan Creus

As compared with homogeneous metals and alloys, cellular metals provide low density, high specific stiffness, high energy absorption and good damping, thus being interesting…

399

Abstract

Purpose

As compared with homogeneous metals and alloys, cellular metals provide low density, high specific stiffness, high energy absorption and good damping, thus being interesting alternatives to employ as protection against shock and impact. Impact energy is dissipated through cell bending, buckling or fracture. The knowledge and computational modelling of the mechanical behaviour of metal foams structures is thus of great importance for real life applications. The purpose of this paper is to increase the knowledge of the differences in metallic hollow sphere structures' (MHSS) behaviour under dynamic loading, as compared with the corresponding behaviour under static loading and to determine the influence of inertia and loading rate.

Design/methodology/approach

Computational dynamical finite element analyses of representative volume elements (RVE) of MHSS have been performed considering varying loading rates. Partially bonded geometries are considered and the effect of the spheres' distribution is also taken into account.

Findings

The results of the numerical examples presented show that inertia plays an important role in the dynamic behaviour of this kind of energy‐absorbing structure. When compared with the corresponding values in the quasi‐static case, the effect of inertia makes the peak load higher. If the deformation rate is higher (greater than 1.39 m/s in the studied cases), the characteristic plateau usually present in compressed metal foams can vanish. For the geometries analysed, damage has a small influence on load‐deformation relations.

Originality/value

This paper presents and discusses differences between static and dynamic behaviour of partially bonded MHSS. There are few references in the literature covering this issue by means of numerical analysis.

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Publication date: 30 May 2017

John Baldwin, Phillip Chidester and Laura Robinson

This research makes a fresh contribution by exploring an understudied aspect of the Tropicália movement: visual performance. After offering a historical overview, we examine the…

Abstract

This research makes a fresh contribution by exploring an understudied aspect of the Tropicália movement: visual performance. After offering a historical overview, we examine the movement’s communicative legacy. We contend that, in addition to song’s lyrics and musical symbols, it is vital to consider a third dimension: visual performance.

The addition of the visual allows for a more fundamental understanding of the many complex meanings that the Tropicalistas constructed in their resistance to political oppression, as well as broader cultural mores and expectations.

Our examination of archival performance videos reveals that Tropicalistas employed modes of dress and a specific, intentional orientation toward their listeners as particularly powerful tools of expression. Revealing these two dimensions of Tropicália performance allows us to better understand the importance of performance as a key element of resistance. The Tropicália movement’s performative reconfigurations of self and other became a vital channel through which the Tropicalistas manage to speak truth to power to challenge the oppressive military regime and question assumptions about Brazilian national identity.

Exploring the role of performance as part of the overall meaning of musical expression opens up new vistas of understanding. While relevant to Tropicália as a pivotal and wholly Brazilian artistic movement, the contributions of this study have implications beyond this particular setting. The analytical approach reveals how artistic movements can serve as both the substance and the expression of national being.

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Publication date: 16 May 2013

Bruno Lobo

This chapter analyzes the role of new local planning frameworks in the development of urban megaprojects (UMPs). It argues that the way projects are integrated with existing…

Abstract

This chapter analyzes the role of new local planning frameworks in the development of urban megaprojects (UMPs). It argues that the way projects are integrated with existing planning controls and statutory procedures influences how its costs and benefits are distributed. Drawing on the case studies of the Special Hudson Yards District in New York City, the “Zone d’Amenagement Concerte Clichy-Batignolles” in Paris and the Operacao Urbana Agua Branca in Sao Paulo, it compares how the legislative reforms and strategic plans enacted in each city impacted development programs, implementation process, and public benefits delivered by each project. This is a comparative case study analysis using quantitative and qualitative data collected through planning documents, press articles, interviews, and field research on the planning process of the three case studies, their administrative and institutional frameworks focused combined with quantitative analysis of the development proposals and outcomes of each project. The research shows how the articulation between the new plans and the underlying zoning districts as well as willingness by the city to commit public funds to finance the required upfront investments influence the ability of cities to extract public benefits from urban megaprojects and improve integration with surrounding neighborhoods, transport infrastructure, and regional policy. Based on a succinct review of the related literature the chapter illustrates the evolving role of public agencies and land-use regulation in the development of UMPs, illustrates the material expression of strategic planning on legislative reform and policy statements, provides a comparative analysis of contrasting legal systems, and suggests policy formulations that can improve the “public return” generated by UMPs.

Available. Open Access. Open Access
Article
Publication date: 27 December 2021

Monique Filassi, Andréa Leda Ramos de Oliveira, Arun Abraham Elias and Karina Braga Marsola

This study aims to analyze the complexities of the Brazilian soybean supply chain (SSC) and develop strategic interventions to improve the origin system’s performance.

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Abstract

Purpose

This study aims to analyze the complexities of the Brazilian soybean supply chain (SSC) and develop strategic interventions to improve the origin system’s performance.

Design/methodology/approach

This study used stakeholder interviews to identify the SSC bottlenecks and determine and assess drivers of competitiveness. A methodological framework based on the systems thinking approach for developing long-term structural changes was used. The problem was structured using behavior over time graph and causal loop modeling to propose three investment strategies to solve the logistics problem in SSC.

Findings

This study highlights the gaps in coordination between stakeholders and the public sector regarding the public policy for infrastructure investment. Three strategic interventions were developed to address the agro-industrial logistical problem, namely, investment in storage, multimodal transport systems and improvements in existing transport infrastructure. To overcome transport and storage logistics limitations, the authors suggest different forms of partnerships, including public-private partnerships.

Research limitations/implications

This research is limited to evaluating an agricultural commodity (soybean) and does not include its by-products. The sample of stakeholders was limited and the boundary of analysis was Brazil. Nevertheless, the study showed how strategic interventions could be developed following a holistic analysis.

Practical implications

The proposed integrated approach illustrates the development of three strategic initiatives. It can be implemented by stakeholders, including the public sector, which is the basis for providing assertive long-term investments in Brazilian logistics.

Social implications

The SSC analysis could promote the implementation of systemically determined interventions and strategies. It could significantly improve the performance of agricultural systems and help the formulation of public policies aimed at rural development.

Originality/value

The use of system dynamics to identify intervention points is an essential contribution to mitigating the SSC’s hindrances. Moreover, the combining methodologies resulted in comprehensive intervention strategies.

Details

RAUSP Management Journal, vol. 57 no. 3
Type: Research Article
ISSN: 2531-0488

Keywords

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Article
Publication date: 18 June 2024

Charikleia Tzanakou, Camila Infanger, Leticia Oliveira and Fernanda Staniscuaski

Internationalisation in higher education (HE) has always been romanticised and idealised but there has been limited focus on the internationalisation of gender equality and…

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Abstract

Purpose

Internationalisation in higher education (HE) has always been romanticised and idealised but there has been limited focus on the internationalisation of gender equality and Equality, Diversity and Inclusion (EDI) certification and the role of international partnerships. Certification and Award Schemes (CAS), such as the Athena Swan Charter, can promote gender equality, best practices exchanges and foster institutional changes. Nevertheless, simply transferring strategies or frameworks without careful consideration of the nuances of the destination context can inadvertently lead to the perpetuation or exacerbation of gender inequalities and reproduce hierarchical relations between the Global South and North. Brazil's cultural and political context highlights the need for adapting the CAS framework to align with the unique conditions of the country, as well as institutional transformations in order to accommodate such a framework. This study aims to critically explore how gender equality and EDI certification can be internationalised in the Global South and how international partnerships can play a role in this process.

Design/methodology/approach

Building on a collaborative UK–Brazil funded project on advancing gender equality in Brazilian academia, we critically reflect on the assumptions of the funding call for operationalising international collaborations, and how we built solidarity – informed by our positionalities – against underlying colonial patterns. As part of our partnership, we were consulted to provide feedback on the introduction of an Athena SWAN framework in Brazil. We reflect on how the Athena Swan framework was “internationalised” in Brazil, especially in relation to its focus, the challenges of implementing gender equality and EDI efforts and the conditions required for such efforts to be meaningful in the Brazilian context. Thus, we assess and critically reflect on the current situation in Brazil, the role that certification can play for EDI and which conditions are required to enact change. In addition, we reflect on our positionalities and working practices as part of this collaboration as feminist researchers from different disciplinary and geographical backgrounds.

Findings

We trace colonial logics in the operationalisation of the funding scheme on setting international collaborations valorising the UK system and reinforcing geopolitical production of knowledge hierarchies between the Global North and Global South. Furthermore, reflecting on the Brazilian political, cultural context with a focus on HE we find similar challenges – to the UK – in implementing gender and EDI efforts. However, there are particular nuances in the Brazilian context that exacerbate these obstacles and make the implementation of an EDI certification framework in Brazil particularly challenging. Overcoming these barriers requires a collective effort from government, funding bodies, scientific associations and HE institutions, for the implementation of impactful and sustainable initiatives beyond mere rhetoric. Finally, while we had a positive collaboration, we felt ambivalent towards certain dimensions of the way the partnerships and the EDI internationalisation were operationalised.

Practical implications

We provide insights and practical recommendations that enhance the understanding of the issues surrounding the implementation of EDI efforts internationally such as CAS in the Brazilian context.

Social implications

Reflecting on the internationalisation of EDI can lead to more tailored context-sensitive frameworks and activities that have the potential to influence societal attitudes and expectations towards gender roles and inclusivity, contributing to a more equitable and just society at large. It also touches upon the dynamics of international partnerships and collaborations across different contexts that can have implications for how such partnerships should be developed and funded beyond a mainstream colonial approach of “mentoring less advanced institutions”.

Originality/value

We reflect and critically discuss the internationalisation of EDI certification in HE and the role of international collaborations towards this process, a topic that has not been often examined within the literature on the internationalisation of HE as a romanticised and positive discourse. From our experience, we explore how such efforts can bring up ambivalence in the way they are operationalised and have the potential to both reinforce and disrupt colonial hierarchies.

Details

Equality, Diversity and Inclusion: An International Journal, vol. ahead-of-print no. ahead-of-print
Type: Research Article
ISSN: 2040-7149

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Article
Publication date: 26 June 2019

Paula Nogueira Curi, Francielly Corrêa Albergaria, Rafael Pio, Maria Cecília Evangelista Vasconcelos Schiassi, Bruna de Sousa Tavares and Vanessa Rios de Souza

The purpose of this paper is to characterise eight different fig cultivars with respect to antioxidant activity and bioactive compound content and to assess the influence of these…

270

Abstract

Purpose

The purpose of this paper is to characterise eight different fig cultivars with respect to antioxidant activity and bioactive compound content and to assess the influence of these cultivars on the physicochemical characteristics, rheological properties and sensory acceptance of the obtained jelly to identify cultivars with increased potential for processing when grown in subtropical regions.

Design/methodology/approach

The analyses of fig fruits and fig jellies were performed in triplicate. To characterise the fig cultivars, analyses of antioxidant activity, phenolic compound content and ascorbic acid concentration were performed on fresh fruits. For the jellies, the total titratable acidity, pH, soluble solids, colour, texture profile and sensory attributes were analysed.

Findings

With respect to antioxidant activity and bioactive compounds, the Roxo de Valinhos displayed the highest antioxidant activity according to the ABTS method, ß-carotene and DPPH; the Três num Prato, Lemon and Brunswick cultivars presented the highest ascorbic acid values; and the Três num Prato cultivar also had the highest total phenolic content. Generally, the various fig cultivars yielded jellies with different physical and chemical characteristics and different rheological properties. This variation did not significantly affect acceptability. This study demonstrates that all of the evaluated cultivars have high potential for processing.

Originality/value

This study evaluated the processing potential of Roxo de Valinhos and other fig cultivars in the form of jelly, which in view of the food risk concerns of the dried fig, seems to be an interesting alternative for consumption of processed fig.

Details

British Food Journal, vol. 121 no. 8
Type: Research Article
ISSN: 0007-070X

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Article
Publication date: 21 March 2024

Yetunde Olawuyi, Janet Antwi and Oladejo Adepoju

This purpose of this study was to assess dietary diversity among women of reproductive age (WRA) and the associations between consumption of a diversified diet and…

50

Abstract

Purpose

This purpose of this study was to assess dietary diversity among women of reproductive age (WRA) and the associations between consumption of a diversified diet and overweight/obesity statuses in Ekiti State, Nigeria.

Design/methodology/approach

Cross-sectional study of 207 WRA from six local government areas in Ekiti State, Nigeria, was done. A validated interviewer-administered questionnaire was used to collect data on sociodemographic characteristics, dietary intake and anthropometry. Dietary intake was assessed with 24-h dietary recall to calculate the Minimum Dietary Diversity Score for Women (MDD-W). Data were analyzed using descriptive statistics, Spearman rank correlation and Chi square test at α0.05.

Findings

Majority of the participants (65.2%) were aged between 19 and 34 years, 58.5% were married and 49.8% had high school as their highest level of education. Mean MDD-W and body mass index (BMI) were 3.8 ± 0.9 and 25.46 ± 6.4 kg/m2, respectively. All participants (100%) consumed foods from the “grains, white roots and tubers” group and majority also from the “meat and poultry” group (79.7%) but ranked low in the consumption of foods from other food groups. Many were overweight (34.8%), obese (14.0%) and a few (1.9%) had morbid obesity. MDD-W was significantly associated with marital status (X2 = 7.7, P = 0.022) and BMI (X2 = 11.4, P = 0.023) and had a weak positive correlation with BMI (r = 0.189, P = 0.007).

Research limitations/implications

Study shows that both undernutrition and overweight/obesity coexist in the population, indicating a case of double burden of malnutrition (DBM) at a population level. However, further studies may be needed to investigate the extent of DBM at individual levels. Although there was a positive correlation between MDD-W and BMI, it cannot be used to predict causality. Study further reveals that the micronutrient intake of the WRA population in Ekiti is inadequate. Considering the importance of the 10 food groups highlighted in MDD_W to nutrition and health, the promotion of the consumption of foods from these food groups with more attention to the micronutrient-rich ones needs to be heightened.

Originality/value

Diet of participants was not diverse enough, indicating micronutrient inadequacy. Promotion of the consumption of a diverse diet, particularly from the food groups rich in micronutrient, needs to be heightened, while food groups high in calorie should be minimally consumed to forestall DBM.

Details

Nutrition & Food Science , vol. 54 no. 3
Type: Research Article
ISSN: 0034-6659

Keywords

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Article
Publication date: 19 August 2024

Saurabh Tiwari and Rajeev Srivastava

Organisations in the past aimed to use technology to improve their processes and services. However, nowadays, their primary focus is on using technology sustainably…

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Abstract

Purpose

Organisations in the past aimed to use technology to improve their processes and services. However, nowadays, their primary focus is on using technology sustainably. Sustainability is crucial to ensure a better and safer future for our environment. One such technology is the Metaverse, which is considered the next step in the growth of the Internet. It combines the real world with the virtual world to create a multi-user environment, allowing users to experience a fully immersive, real-time existence with digital characters, objects, and locations that are often 3D. The Metaverse and sustainability share a strong relationship, as it is expected that the Metaverse will have a significant impact on the material, economic, and social realms, as well as sustainability worldwide. This paper uses bibliometric analysis to understand sustainable metaverse scholarship better and provide an up-to-date account of industry practices.

Design/methodology/approach

This paper used the PRISMA approach and bibliometric analysis to analyse and draw conclusions from 2,911 articles retrieved from the Scopus database from 1999 to July 2023. The methodology is divided into four steps: data collection, analysis, visualisation, and interpretation. The current study uses the Bibliometric R-package and VOS viewer software to comprehend sustainable metaverse scholarship.

Findings

The study provides fascinating insights that may assist scholars, industry professionals, and top management in understanding and conceptualising sustainable metaverse in their organisations. The results show that the number of publications has significantly increased from 2015 onwards, reaching a maximum of 601 manuscripts in 2022 with an increasing publication annual growth rate of 29.12%. The United Kingdom, India, China, the USA and Italy were the most productive countries regarding the total number of publications. Technological Forecasting and Social Change, Journal of Cleaner Production, Journal of Business Research, Journal of Retailing and Consumer Services, Current Issues in Tourism, Benchmarking: An International Journal of Production Research and International Journal of Information Management emerged as the top outlets.

Research limitations/implications

The research in sustainable metaverse is underpinned by this study, which aims to understand the trends in this field over the last two decades regarding prolific authors, most influential journals, key themes, and the intellectual and social structure. The study on sustainable metaverse has grown significantly and attracted interest from academia and business since 2015, following its embryonic stage. Consequently, a more in-depth analysis is required to help develop a better understanding of this new field.

Originality/value

The paper focuses on sustainable metaverse through increased interest from 2015 onwards through the literature review. Although the metaverse has already received significant financial and labour investments from businesses and technology firms, various sustainability issues are still present in physical materials. There is a need to assess the achievement of numerous Sustainable Development Goals (SDGs) using the resources and time put into the metaverse. Furthermore, these findings can guide researchers who want to delve deeper into sustainable metaverse.

Details

Benchmarking: An International Journal, vol. ahead-of-print no. ahead-of-print
Type: Research Article
ISSN: 1463-5771

Keywords

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