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1 – 7 of 7Eric Goncalves Da Silva and Philippe Parnaudeau
The purpose of this paper is to quantify the relative importance of the multiphase model for the simulation of a gas bubble impacted by a normal…
Abstract
Purpose
The purpose of this paper is to quantify the relative importance of the multiphase model for the simulation of a gas bubble impacted by a normal shock wave in water. Both the free-field case and the collapse near a wall are investigated. Simulations are performed on both two- and three-dimensional configurations. The main phenomena involved in the bubble collapse are illustrated. A focus on the maximum pressure reached during the collapse is proposed.
Design/methodology/approach
Simulations are performed using an inviscid compressible homogeneous solver based on different systems of equations. It consists in solving different mixture or phasic conservation laws and a transport-equation for the gas volume fraction. Three-dimensional configurations are considered for which an efficient massively parallel strategy was developed. The code is based on a finite volume discretization for which numerical fluxes are computed with a Harten, Lax, Van Leer, Contact (HLLC) scheme.
Findings
The comparison of three multiphase models is proposed. It is shown that a simple four-equation model is well-suited to simulate such strong shock-bubble interaction. The three-dimensional collapse near a wall is investigated. It is shown that the intensity of pressure peaks on the wall is drastically increased (more than 200 per cent) in comparison with the cylindrical case.
Research limitations/implications
The study of bubble collapse is a key point to understand the physical mechanism involved in cavitation erosion. The bubble collapse close to the wall has been addressed as the fundamental mechanism producing damage. Its general behavior is characterized by the formation of a water jet that penetrates through the bubble and the generation of a blast wave during the induced collapse. Both the jet and the blast wave are possible damaging mechanisms. However, the high-speed dynamics, the small spatio-temporal scales and the complicated physics involved in these processes make any theoretical and experimental approach a challenge.
Practical implications
Cavitation erosion is a major problem for hydraulic and marine applications. It is a limiting point for the conception and design of such components.
Originality/value
Such a comparison of multiphase models in the case of a strong shock-induced bubble collapse is clearly original. Usually models are tested separately leading to a large dispersion of results. Moreover, simulations of a three-dimensional bubble collapse are scarce in the literature using such fine grids.
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Kaique Doratiotto, Jose Geraldo Vidal Vieira, Lucas Eric da Silva and Luiz Paulo Fávero
This research aims to evaluate the factors that influence logistics outsourcing, including the impact of logistics outsourcing on measuring companies' logistics performance. This…
Abstract
Purpose
This research aims to evaluate the factors that influence logistics outsourcing, including the impact of logistics outsourcing on measuring companies' logistics performance. This research provides interactions among the various factors (constructs) such as “financial”, “collaboration and process characteristics”, “external influencer”, and “logistics performance”.
Design/methodology/approach
To investigate the interaction between the constructs, structural equation modelling is proposed to understand what the relevant criteria are while outsourcing logistics. Data were acquired from surveys conducted with 129 managers from Brazilian companies in the industry sector.
Findings
The factor “collaboration and process characteristics” is what most influences the “logistics performance” of companies, highlighting the importance of managing contractors; and the “financial” factor also contributes to the logistic outsourcing decision.
Research limitations/implications
Some limitations of this study need to be clarified. First, the model could test the moderate and mediate aspects by using variables inspired on RBV and TCE. Second, the sample is relatively small and restricted to the Brazilian industries' case, although the results may be useful for other countries in the world. Third, the responses represent viewpoints of the people who work in the companies. To address this issue, the authors asked respondents to fill out the questionnaire from the perspective of the organisation.
Practical implications
Most 3PL come from developed countries and find different requirements in Brazil. Then, this new knowledge may help 3L providers better understand the needs of the local or foreign companies that operate in the local market. The measurement model may also help to construct a new organisational process, as it sheds light on the main elements necessary for gathering logistics performance outcomes.
Originality/value
To the best of the authors' knowledge, the literature lacks studies on the interaction among these logistics outsourcing constructs, mainly in emerging markets where significant growth opportunities have led to logistics activities being outsourced. The literature that examines the impact of these constructs on logistics performance is also limited. Therefore, this research contributes to providing a model that measures these impacts according to the company's point of view.
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Tessa Withorn, Carolyn Caffrey, Joanna Messer Kimmitt, Jillian Eslami, Anthony Andora, Maggie Clarke, Nicole Patch, Karla Salinas Guajardo and Syann Lunsford
This paper aims to present recently published resources on library instruction and information literacy providing an introductory overview and a selected annotated bibliography of…
Abstract
Purpose
This paper aims to present recently published resources on library instruction and information literacy providing an introductory overview and a selected annotated bibliography of publications covering all library types.
Design/methodology/approach
This paper introduces and annotates English-language periodical articles, monographs, dissertations, reports and other materials on library instruction and information literacy published in 2018.
Findings
The paper provides a brief description of all 422 sources, and highlights sources that contain unique or significant scholarly contributions.
Originality/value
The information may be used by librarians and anyone interested as a quick reference to literature on library instruction and information literacy.
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Edgar Ramos, Steven Dien, Abel Gonzales, Melissa Chavez and Ben Hazen
The purpose of this paper is to review the literature on logistics and supply chain costs to provide an analysis of sources of publication, citations and authorship using…
Abstract
Purpose
The purpose of this paper is to review the literature on logistics and supply chain costs to provide an analysis of sources of publication, citations and authorship using bibliometric analysis techniques (VOSviewer and CitNetExplorer tools).
Design/methodology/approach
A review of 756 articles published during the period 2014 to 2019 referenced in the Scopus database was performed. The review was limited to articles published in English and directly related to logistics and supply chain costs.
Findings
The research identified more than 2,000 authors representing more than 5,000 keywords and 10,000 references from a total of 155 journals investigated. A critical synthesis of the resulting data revealed several insights about various aspects of studies in this field. For instance, the review identified a scarcity of academic publications in three key areas, namely “supply chain,” “optimization” and “transportation”, which are concepts focused on the total supply chain.
Originality/value
This research highlights important areas of attention for both researchers and practitioners considering costs associated with logistics and supply chain operations and strategies. The results can also help identify thematic areas, journals and topics for future research. The paper identifies and proposes research areas to contribute to the literature when challenges to investigating logistics and supply chain costs are discussed.
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Rune Dall Jensen, Sissel Ravn and Mette Krogh Christensen
Education of the surgeon and development of surgical expertise have been debated for centuries. Today, research in surgical education applies terms and methods from other…
Abstract
Purpose
Education of the surgeon and development of surgical expertise have been debated for centuries. Today, research in surgical education applies terms and methods from other performance domains such as sport and music. However, there still seems to be a lack of consensus as to how talent may be brought into the discourse about surgical education. Especially, when it comes to identifying and developing trainees who in the future will perform better than the average surgeon.
Design/methodology/approach
This five-step scoping study aims to map existing literature about talent identification, talent development and development of expertise in the domains of surgery, sport and music in the period of 1985-2014.
Findings
A total of 242 studies, divided in the four domains of surgery (69 studies), sport (115 studies), music (34 studies) and cross-disciplinary studies (24 studies) published in the period 1985-2014 were included.
Originality/value
Informed by the performance domains of sports and music and their inclusion of a holistic, ecological approach to research, this study suggests that research in surgical education may benefit from broadening its view on talent by including psychosocial variables and environmental, demographic and structural influencers when considering how surgical talent may be identified and developed.
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Rozelia Laurett, Arminda Paço and Emerson Wagner Mainardes
This paper aims to understand how the FUCAPE 120% Sustainable project promotes sustainable development in higher education. The project was conceived and implemented by FUCAPE…
Abstract
Purpose
This paper aims to understand how the FUCAPE 120% Sustainable project promotes sustainable development in higher education. The project was conceived and implemented by FUCAPE Business School, a private higher education institution (HEI) specialised in business, located in Vitória, Espírito Santo, Brazil.
Design/methodology/approach
The approach of the study was qualitative research based on a case study. Data were collected through semi-structured interviews with 12 stakeholders involved in FUCAPE 120% Sustainable.
Findings
The results indicate that FUCAPE 120% Sustainable is a project formed from 18 sustainable actions incorporated on the campus of FUCAPE Business School. Most of the project’s actions are connected to the triple bottom line (TBL) and linked to sustainable development goals (SDGs), particularly SDG12 (responsible consumption and production), SDG13 (climate action) and SDG17 (partnerships for the goals).
Research limitations/implications
This study contributes to the literature by extending information on sustainability in HEIs, focusing specifically on a business HEI.
Practical implications
This is an innovative project that can serve as a model for other HEIs, with due adaptations. As business HEIs do not usually have laboratories, they may be considered to have little effect on the environment. However, this study found that business HEIs can have a relevant impact on the environment, and the adoption of sustainable actions can minimise adverse effects.
Originality/value
Various sustainability projects and actions are developed and implemented by HEIs, but studies analysing the projects in business HEIs or studies linking the actions of the project to the TBL theory and SDGs are scarce. Sustainable business HEI-based projects may provide future managers a more inter-disciplinary and sustainable vision focused on the TBL and SDGs.
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Izabel Faustino, Katy Maia, Magno Rogerio Gomes, Paulo Mourao and Elisangela Araujo
This paper analyzes the issue of wage differentials and gender discrimination in the Brazilian labor market.
Abstract
Purpose
This paper analyzes the issue of wage differentials and gender discrimination in the Brazilian labor market.
Design/methodology/approach
The methodology is based on the log-linear equation model by Mincer (1974) and the decomposition method by Oaxaca (1973) and Blinder (1973) and was estimated using data from the National Household Sample Survey (PNAD).
Findings
The main results indicate that there was a reduction in wage differentials and gender discrimination in the majority of regions in Brazil for white workers when comparing the available years. However, for non-white workers, the degree of discrimination increased in Brazil, especially in the central-west and southeast regions. Overall, wage decompositions have suggested that women suffer from wage discrimination.
Originality/value
This is the first paper detailing wage discrimination across the different Brazilian regions and also controlling for usual dimensions like gender and race.
Peer review
The peer review history for this article is available at: https://publons.com/publon/10.1108/IJSE-09-2021-0569.
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