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Article
Publication date: 16 September 2024

Émerson dos Santos Passari, Carlos Henrique Lauermann, André J. Souza, Fabio Pinto Silva and Rodrigo Rodrigues de Barros

The rapid growth of 3D printing has transformed the cost-effective production of prototypes and functional items, primarily using extrusion technology with thermoplastics. This…

Abstract

Purpose

The rapid growth of 3D printing has transformed the cost-effective production of prototypes and functional items, primarily using extrusion technology with thermoplastics. This study aims to focus on optimizing mechanical properties, precisely highlighting the crucial role of mechanical compressive strength in ensuring the functionality and durability of 3D-printed components, especially in industrial and engineering applications.

Design/methodology/approach

Using the Box−Behnken experimental design, the research investigated the influence of layer thickness, wall perimeter and infill level on mechanical resistance through compression. Parameters such as maximum force, printing time and mass utilization are considered for assessing and enhancing mechanical properties.

Findings

The layer thickness was identified as the most influential parameter over the compression time, followed by the degree of infill. The number of surface layers significantly influences both maximum strength and total mass. Optimization strategies suggest reducing infill percentage while maintaining moderate to high values for surface layers and layer thickness, enabling the production of lightweight components with adequate mechanical strength and reduced printing time. Experimental validation confirms the effectiveness of these strategies, with generated regression equations serving as a valuable predictive tool for similar parameters.

Practical implications

This research offers valuable insights for industries using 3D printing in creating prototypes and functional parts. By identifying optimal parameters such as layer thickness, surface layers and infill levels, the study helps manufacturers achieve stronger, lighter and more cost-efficient components. For industrial and engineering applications, adopting the outlined optimization strategies can result in components with enhanced mechanical strength and durability, while also reducing material costs and printing times. Practitioners can use the developed regression equations as predictive tools to fine-tune their production processes and achieve desired mechanical properties more effectively.

Originality/value

This research contributes to the ongoing evolution of additive manufacturing, providing insights into optimizing structural rigidity through polylactic acid (PLA) selection, Box−Behnken design and overall process optimization. These findings advance the understanding of fused deposition modeling (FDM) technology and offer practical implications for more efficient and economical 3D printing processes in industrial and engineering applications.

Details

Rapid Prototyping Journal, vol. 31 no. 1
Type: Research Article
ISSN: 1355-2546

Keywords

Book part
Publication date: 23 March 2017

Barbara de Lima Voss, David Bernard Carter and Bruno Meirelles Salotti

We present a critical literature review debating Brazilian research on social and environmental accounting (SEA). The aim of this study is to understand the role of politics in…

Abstract

We present a critical literature review debating Brazilian research on social and environmental accounting (SEA). The aim of this study is to understand the role of politics in the construction of hegemonies in SEA research in Brazil. In particular, we examine the role of hegemony in relation to the co-option of SEA literature and sustainability in the Brazilian context by the logic of development for economic growth in emerging economies. The methodological approach adopts a post-structural perspective that reflects Laclau and Mouffe’s discourse theory. The study employs a hermeneutical, rhetorical approach to understand and classify 352 Brazilian research articles on SEA. We employ Brown and Fraser’s (2006) categorizations of SEA literature to help in our analysis: the business case, the stakeholder–accountability approach, and the critical case. We argue that the business case is prominent in Brazilian studies. Second-stage analysis suggests that the major themes under discussion include measurement, consulting, and descriptive approach. We argue that these themes illustrate the degree of influence of the hegemonic politics relevant to emerging economics, as these themes predominantly concern economic growth and a capitalist context. This paper discusses trends and practices in the Brazilian literature on SEA and argues that the focus means that SEA avoids critical debates of the role of capitalist logics in an emerging economy concerning sustainability. We urge the Brazilian academy to understand the implications of its reifying agenda and engage, counter-hegemonically, in a social and political agenda beyond the hegemonic support of a particular set of capitalist interests.

Details

Advances in Environmental Accounting & Management: Social and Environmental Accounting in Brazil
Type: Book
ISBN: 978-1-78635-376-4

Keywords

Article
Publication date: 26 February 2019

Humberto Rodrigues Marques, Thays Aparecida de Oliveira, Daniela Meirelles Andrade and Andre Luiz Zambalde

Universities, as providers of knowledge and technology, have a key role in society based on knowledge. The purpose of this paper is to identify and describe the technological…

Abstract

Purpose

Universities, as providers of knowledge and technology, have a key role in society based on knowledge. The purpose of this paper is to identify and describe the technological innovation centers (TICs) of the federal universities of Minas Gerais, Brazil, verifying if federal institutions of higher education in the state are meeting the attributions outlined in the Innovation Act.

Design/methodology/approach

In order to achieve the proposed objective, each one of the public and federal universities in the state of Minas Gerais, Brazil, was outlined as analysis units. The data sources used for this study are intrinsically secondary and were collected from the websites and TICs of each university.

Findings

As a result, it was found that all universities have TICs, and are inserted into the State Intellectual Property Network. Those aspects show that the universities have been searching for structure themselves by the new entrepreneurial mission of today’s educational institutions.

Originality/value

As noted in the literature, more research is needed to examine the efficiency and professionalism of TICs in the entrepreneurial activity of universities because the institutionalization of TICs is still recent and many TICs are currently in an improvement phase of their activities.

Details

World Journal of Entrepreneurship, Management and Sustainable Development, vol. 15 no. 2
Type: Research Article
ISSN: 2042-5961

Keywords

Article
Publication date: 27 March 2020

Rodrigo de Castro Freitas and Maria do Carmo Duarte Freitas

Lean office covers the improvement of administrative processes and information flows. In offices, one of the essential challenges is to coordinate the development of information…

2057

Abstract

Purpose

Lean office covers the improvement of administrative processes and information flows. In offices, one of the essential challenges is to coordinate the development of information management capabilities. Thus, this paper aims to identify the key factors of information management in lean office deployment contexts.

Design/methodology/approach

By adopting a qualitative approach, it consists of theoretical research that applies grounded theory's coding technique and exploits 27 scientific studies on lean office published in the past 20 years.

Findings

It identifies five key factors for managing information into an organizational structure that optimizes information flow, such as “information-seeking,” “access to information,” “information quality,” “information processing” and “use of information and communication technology”.

Research limitations/implications

Data analysis was restricted in scientific research regarding lean office deployment. Therefore, the accuracy of the concepts and categories of information management proposed in this paper can be adjusted and validated in future research, thus deepening the discussion of its findings.

Practical implications

It highlights issues for managing information in contemporary organizations such as failures in information retrieval, restrictions on access to information, lack of quality information, inadequate information processing criteria and inefficiency of information systems infrastructure.

Originality/value

It analyzes the lean office deployment from the theoretical framework of information management. Thus, it differs from other studies in this field because it is not limited to the operational aspects of lean management. Nevertheless, it shows that lean office reconfigures information flows and continually improves organizations’ strategic management.

Details

International Journal of Lean Six Sigma, vol. 11 no. 6
Type: Research Article
ISSN: 2040-4166

Keywords

Article
Publication date: 31 August 2012

B. Franchini, R. Poínhos, K. Klepp and M.D.V. de Almeida

This paper's aim is to assess vegetable soup intake and its contribution to total vegetable intake among mothers of Portuguese schoolchildren as well as to examine the association…

257

Abstract

Purpose

This paper's aim is to assess vegetable soup intake and its contribution to total vegetable intake among mothers of Portuguese schoolchildren as well as to examine the association between relative vegetable soup intake and sociodemographic characteristics.

Design/methodology/approach

A cross‐sectional survey was carried out in Portugal as part of the Pro Children study. In total 1,673 women, mothers of 11‐13 year old children, took part in the study. The vegetable intake and sociodemographic characteristics were collected with a self‐administered questionnaire in which a precoded 24‐hour recall was applied. The analysed sociodemographic characteristics were the number of people and composition of household, educational level, social class and region of residence. The associations between preferential or exclusive consumer mothers of vegetable soup (i.e. ≥50 per cent of total vegetable intake) and sociodemographic characteristics were analysed by a logistic regression model.

Findings

The mean intake of vegetable soup was 76.1 g/d and its contribution to total vegetable intake was approximately 45 per cent. The percentage of mothers that were preferential or exclusive consumers of vegetable soup was 41 per cent. Preferential or exclusive vegetable soup intake was less likely among mothers when the number of people in the household was less than four (vs 4; OR: 0.734, 95 per cent CI: 0.577‐0.934) and that did not live with their spouse/partner (OR: 0.617, 95 per cent CI: 0.424‐0.878).

Originality/value

The paper focuses on the consumption of vegetable soup, a traditional culinary preparation among Portuguese people. Also, it identifies factors associated with its consumption.

Details

British Food Journal, vol. 114 no. 9
Type: Research Article
ISSN: 0007-070X

Keywords

Article
Publication date: 20 November 2020

Oluwatola Adigun, Folorunso Oludayo Fasina, Awoke Kidanemariam, Nomakorinte Gcebe and Abiodun A. Adesiyun

The primary objective was to determine the prevalence of indicator microorganisms [Staphylococcus aureus, non-S. aureus staphylococci (NSAS), coliforms and aerobic bacteria] for…

Abstract

Purpose

The primary objective was to determine the prevalence of indicator microorganisms [Staphylococcus aureus, non-S. aureus staphylococci (NSAS), coliforms and aerobic bacteria] for contamination of chicken carcasses, carcass drip and rinse water from the informal chicken market in Gauteng, South Africa.

Design/methodology/approach

Chicken swabs, chicken drips and rinse waters were collected from 151 chickens from 47 random outlets. Pre-tested questionnaires were administered to capture the risk factors for bacterial contamination. Standard microbiological procedures were conducted for isolation and enumeration of target bacteria.

Findings

NSAS (64% and 41%) and S. aureus (12% and 31%) were prevalent on carcasses and in carcass drip respectively. Coliforms (62%) and aerobic bacteria (85%) were detected in rinse water. Significant risk factors for contamination of carcasses with NSAS, S. aureus and coliform organisms were: evisceration of chickens on the same location used for sale, cleaning of display counter with dirty clothes/wipes, holding of differently sourced chickens in the same cage prior to slaughter, not cleaning the display table/counter and hands at all, washing knives in rinse water, high turnover of daily slaughter and length of time to display chickens.

Research limitations/implications

The limitations of this research were the limited geographical coverage and small sample size.

Practical implications

The isolation of these indicator microorganisms suggests the potential presence of other chicken-borne pathogens not tested for in the study.

Social implications

The findings serve to inform policy on public health and street-vended food and can guide control on good sanitary practices.

Originality/value

This is the first comprehensive report on ready to eat chickens from the informal markets in Gauteng, South Africa.

Details

British Food Journal, vol. 123 no. 3
Type: Research Article
ISSN: 0007-070X

Keywords

Article
Publication date: 17 July 2023

Anaile Rabelo, Marcos W. Rodrigues, Cristiane Nobre, Seiji Isotani and Luis Zárate

The purpose of this study is to identify the main perspectives and trends in educational data mining (EDM) in the e-learning environment from a managerial perspective.

Abstract

Purpose

The purpose of this study is to identify the main perspectives and trends in educational data mining (EDM) in the e-learning environment from a managerial perspective.

Design/methodology/approach

This paper proposes a systematic literature review to identify the main perspectives and trends in EDM in the e-learning environment from a managerial perspective. The study domain of this review is restricted by the educational concepts of e-learning and management. The search for bibliographic material considered articles published in journals and papers published in conferences from 1994 to 2023, totaling 30 years of research in EDM.

Findings

From this review, it was observed that managers have been concerned about the effectiveness of the platform used by students as it contains the entire learning process and all the interactions performed, which enable the generation of information. From the data collected on these platforms, there are improvements and inferences that can be made about the actions of educators and human tutors (or automatic tutoring systems), curricular optimization or changes related to course content, proposal of evaluation criteria and also increase the understanding of different learning styles.

Originality/value

This review was conducted from the perspective of the manager, who is responsible for the direction of an institution of higher education, to assist the administration in creating strategies for the use of data mining to improve the learning process. To the best of the authors’ knowledge, this review is original because other contributions do not focus on the manager.

Details

Information Discovery and Delivery, vol. 52 no. 2
Type: Research Article
ISSN: 2398-6247

Keywords

Article
Publication date: 27 September 2023

Thanh Tiep Le, Cuong Cao Ngo and Ha Pham Hai Nguyen

This study's main goal is to explore how small and medium-sized enterprises (SMEs) in the food as well as beverage (F&B) area should evolve to survive in a bustled post-pandemic…

Abstract

Purpose

This study's main goal is to explore how small and medium-sized enterprises (SMEs) in the food as well as beverage (F&B) area should evolve to survive in a bustled post-pandemic future.

Design/methodology/approach

Drawing on the knowledge-practice gap in the field of Entrepreneurial Orientation (EO) as well as Business Model Innovation (BMI), this study examines an integrated framework using the F&B sector as an empirical field of research. This study uses an empirical quantitative approach using the main information aggregated from a questionnaire administered during the study. The sample had 467 valid responses (71.08% response rate). This paper uses the Partial-Least Squares Structural Equation Model (PLS-SEM) to examine structural relationships because this technique is usually proposed for models with complex relations.

Findings

According to the research EO is directly and indirectly, correlated with BMI. The correlation is positive and significant. Simultaneously, corporate social responsibility (CSR) is partially mediated in the stated relation between EO as well as BMI, and CETA where it shows a positive moderation part in EO's influence on CSR. In particular, it elucidates how EO promotes CSR and BMI, alongside moderating part of circular economy principles adoption (CEPA).

Practical implications

These research findings suggest that SMEs in the F&B sector should transform the way they traditionally manage their businesses by applying circular economic principles into entrepreneurial orientation to promote CSR-based practices and acquire the resources obtained from internal and external stakeholders. Hence, their business can recover from post-pandemic effects and become resilient to future disruptions. Furthermore, this study suggests that adopting circular economy principles provides a key source of knowledge and insights that allows firms to sharpen their entrepreneurial orientation toward incorporating stakeholders and social environmental concerns into business models for sustainability, especially in the uncertain and drastic changing environment.

Originality/value

This study proposes a novel approach by which BMI is formed and evolved based on circular economy principles-oriented entrepreneurship and the synergies of stakeholders through undertaking corporate social responsibility practices. Drawing from the knowledge-practice gap, this research adds to the existing knowledge about EO as well as BMI with a conceptualized and operationalized empirical framework in a novel context that was not covered in current literature, especially in the context of uncertainties and disruptions experienced during COVID-19 outbreaks. The F&B sector was hit and how it should evolve to recover and build resilience is perceived as an urgent issue.

Details

European Journal of Innovation Management, vol. ahead-of-print no. ahead-of-print
Type: Research Article
ISSN: 1460-1060

Keywords

Article
Publication date: 11 July 2023

Ji Li, Pradeep Thaker, Deshou Jiang, Qingrong Huang and Chi-Tang Ho

The purpose of this paper is to systematically review the functionalities, safety regulations and product applications of herb Stevia rebaudiana extract. This plant material is…

Abstract

Purpose

The purpose of this paper is to systematically review the functionalities, safety regulations and product applications of herb Stevia rebaudiana extract. This plant material is embedded with multiple functionalities such as antioxidant, antidiabetics, anti-inflammation and antimicrobial. The regulations released from global authorities are covered to ensure the safety premise of stevia. Besides, the product applications of the extract of aerial parts of the herb S. rebaudiana helps us to recognize its value from commercial side.

Design/methodology/approach

Relevant literatures are selected and obtained from main scientific databases such as Google Scholar, Web of Science, PubMed and trade magazines published between 2000 and 2023. The keywords and their possible combinations such as sweetening, antioxidant, antidiabetics, anti-inflammation, safety and product development were used to ensure the preciseness and completeness of literature searching. Major data such as sweetness, total phenolic content and dose together with latter critical conclusions from searched publications were appropriately used and discussed. In this review, approximately 150 scientific literatures were meticulously ordered and analyzed. In applications, it is the first time that sentiment analysis was used to obtain a market assessment of the stevia-containing products.

Findings

This review paper helps rearrange the scientific affairs of those stevia extract’s functions like sweetening, antioxidant, antidiabetics and inflammation. Sweetness indexes of steviol glycosides were summarized together for comparison while various in vitro and in vivo approaches were reviewed to quantify those functions’ capacities and to depict the related mechanism. The regulation of steviol glycoside compounds such as rebaudioside A was established by global authorities such as US Food and Drug Administration and Joint FAO/World Health Organization Expert Committee to ensure the safety endorsement before commercialization. Then, this study discussed about the market performance of stevia ingredients or products with the self-developed data analytics. This study also investigated the product development progress of stevia-containing food products in the categories of beverage, bakery, dairy and confectionery. Those stevia-containing food consumer goods can be acceptable by certain consumers.

Originality/value

This review paper precisely presents the evidential information about the stevia’s multiple functionalities with mechanisms and global regulation milestones. To the best of the authors’ knowledge, it is then the first time to probe the stevia-containing products’ market performance through data analytics.

Details

Nutrition & Food Science , vol. 53 no. 8
Type: Research Article
ISSN: 0034-6659

Keywords

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