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Article
Publication date: 12 September 2024

Sérgio B Gonçalves, Pedro Dantas, Francisco Guedes de Melo, João Gouveia, José Guimarães Consciência, Jorge Martins and Miguel Tavares da Silva

Arthroscopic osteochondroplasty is a minimally invasive procedure that has been used to treat femoroacetabular impingement syndrome, leading to significant improvements in…

Abstract

Purpose

Arthroscopic osteochondroplasty is a minimally invasive procedure that has been used to treat femoroacetabular impingement syndrome, leading to significant improvements in patients’ clinical outcomes and quality of life. However, some studies suggest that inadequate bone resection can substantially alter hip biomechanics. These modifications may generate different contact profiles and higher contact forces, increasing the risk of developing premature joint degeneration. To improve control over bone resection and biomechanical outcomes during arthroscopic osteochondroplasty surgery, this study aims to present a novel system for measuring femoroacetabular contact forces.

Design/methodology/approach

Following a structured design process for the development of medical devices, the steps required for its production using additive manufacturing with material extrusion and easily accessible sensors are described. The system comprises two main devices, one for measuring femoroacetabular contact forces and the other for quantifying the force applied by the assistant surgeon during lower limb manipulation. The hip device was designed for use within an arthroscopic environment, eliminating the need for additional portals.

Findings

To evaluate its performance, the system was first tested in a laboratory setup and later under in-service conditions. The 3D printing parameters were tuned to ensure the watertighness of the device and sustain the intraoperative fluid pressures. The final prototype allowed for the controlled measurement of the hip contact forces in real-time.

Originality/value

Using additive manufacturing and readily available sensors, the present work presents the first device to quantify joint contact forces during arthroscopic surgeries, serving as an additional tool to support the surgeon’s decision-making process regarding bone resection.

Details

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

Keywords

Article
Publication date: 21 July 2020

Jennifer Gonçalves, Raul Matsushita and Sergio Da Silva

The authors observed few sectors with many connections and many sectors with few connections, “in the Brazilian input-output network,” which meant that sectoral idiosyncratic…

Abstract

Purpose

The authors observed few sectors with many connections and many sectors with few connections, “in the Brazilian input-output network,” which meant that sectoral idiosyncratic shocks may lead to aggregate fluctuations.

Design/methodology/approach

The authors considered the Brazilian input–output tables for the years 2010 and 2015 and found a significant asymmetry in the roles that sectors play as input suppliers to others.

Findings

Generalized Pareto exponents decreased from one period to the other, which suggested that the input–output network has become more vulnerable to shocks.

Practical implications

The authors identified real estate as the most important sector and, given its high connectivity, shocks to it could become a major driver of the Brazilian business cycle.

Originality/value

This is the first paper examining the asymmetric structure of the Brazilian input–output table, and results are compared with those for the US table.

Details

Journal of Economic Studies, vol. 48 no. 3
Type: Research Article
ISSN: 0144-3585

Keywords

Article
Publication date: 20 August 2020

Alan Tadeu de Moraes, Luciano Ferreira da Silva and Paulo Sergio Gonçalves de Oliveira

This study aims to systematize the acquisition phase of absorptive capacity microprocesses that contribute to project management (PM) knowledge identification.

Abstract

Purpose

This study aims to systematize the acquisition phase of absorptive capacity microprocesses that contribute to project management (PM) knowledge identification.

Design/methodology/approach

An exploratory and descriptive qualitative research was adopted. The first stage consisted of building the conceptual framework based on four systematic-literature-reviews. The data collection process in the second phase involved in-depth interviews, which are adequate to understand the interviewee’s reality. The sample composition consisted of 15 respondents who are PM professionals with an average of 15 years of experience. Each interviewee was chosen based on their expertise and ability to transmit the entire management process of several projects. The data were analyzed using the Atlas. Tecnology information software following the grounded theory technique with three coding cycles: open, axial and selective.

Findings

Based on the results, the authors organized the microprocesses into three groups: events, social interaction and the use of tools and techniques.

Research limitations/implications

The primary limitation of the study was the number of respondents. Future studies will be able to identify other microprocesses and evaluate their role in the knowledge identification process.

Practical implications

This study presents a systematization of microprocesses in knowledge identification, as it occurs in the context of PM. Based on the results of this study, organizations will be able to choose the microprocesses that best fit their operations and activities according to the complexity, innovation and/or criticality of their projects.

Originality/value

The systematic literature review revealed a gap in the knowledge identification phase of knowledge management as it pertains to PM. Thus, this study presents a systematization of how knowledge identification occurs in the context of PM.

Details

Journal of Knowledge Management, vol. 24 no. 9
Type: Research Article
ISSN: 1367-3270

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: 18 August 2021

Jéssica Sena Gonçalves, Arthur Rocha-Gomes, Amanda Escobar Teixeira, Alexandre Alves da Silva, Mayara Rodrigues Lessa, Nísia Andrade Villela Dessimoni-Pinto, Sergio Ricardo Stuckert Seixas and Tania Regina Riul

The purpose of this study was to evaluate the increase in sensitivity of a single risperidone administration in relation to energy intake of Wistar rats treated with cafeteria…

Abstract

Purpose

The purpose of this study was to evaluate the increase in sensitivity of a single risperidone administration in relation to energy intake of Wistar rats treated with cafeteria diet from birth to adulthood (119 days).

Design/methodology/approach

During the lactation period, six litters of Wistar rats (dam + 8 pups each litter) were fed one of the following two diets: Control (n = 3) or Cafeteria (n = 3) diets and water ad libitum. After weaning, the males were placed in individual cages, receiving the same diet offered to their respective dams (Control = 18; or Cafeteria = 18) until adulthood (119 postnatal days). The following parameters were evaluated: food and energy intake; macronutrient intake; weight gain; adipose tissue relative weight; sucrose preference; food intake after an administration of risperidone (0.1 mg/kg body weight).

Findings

The Cafeteria group showed a higher energy intake in relation to the Control group (p < 0.001). The consumption of energy beyond the individual needs can be understood as a hyperphagic condition. Also, the Cafeteria group reported greater weight gain (p = 0.048) and accumulation of adipose tissue (p < 0.001) with respect to the Control group. These results indicate that the cafeteria diet generated obesity in animals. The Cafeteria group showed reduced sucrose preference (p = 0.031), which is associated with the development of anhedonia-like behavior. In the food intake test, risperidone showed a greater sensitivity in Cafeteria animals, promoting a decrease in their energy intake in relation to the Control group that received risperidone (p = 0.040).

Originality/value

The cafeteria diet promoted hyperphagia, anhedonia-like behavior and obesity in animals. Acute risperidone administration showed greater sensitivity in the Cafeteria group, with a decrease in energy intake. The reported effects may be related to a downregulation of the dopaminergic system in the NAc region.

Details

Nutrition & Food Science , vol. 52 no. 2
Type: Research Article
ISSN: 0034-6659

Keywords

Article
Publication date: 5 March 2018

Rodrigo Goyannes Gusmão Caiado, Osvaldo Luiz Gonçalves Quelhas, Janice Helena de Oliveira Dias, Maria de Lurdes Costa Domingos, Sergio Luiz Braga França and Marcelo Jasmim Meiriño

This paper aims to analyze the adherence of social responsibility management (SRM) in Brazilian organizations and to identify the driving and the resistance forces to implement it.

Abstract

Purpose

This paper aims to analyze the adherence of social responsibility management (SRM) in Brazilian organizations and to identify the driving and the resistance forces to implement it.

Design/methodology/approach

This article presents a deep literature review on SRM, corporate social responsibility (CSR) and stakeholder management, which aim to support a survey research to define, according to experts, the market perception of adherence of SRM.

Findings

The paper presents evidence that there is adherence on the part of the practices of organizations that adhere to the theoretical foundations of SRM in Brazil. It was found that organizations should seek to improve nine areas to implement SRM and can use each of these areas strategically or all together.

Practical implications

This study provides an opportunity for employees whose perceptions are aligned based on educational programs and engagement in CSR, and these gains favor the improvement of their own management and the quality of relationships.

Social implications

The research provides an opportunity to recast actions and the possibility of being recognized by stakeholders as active agents in this process.

Originality/value

This study sheds new light on both SRM and the CSR literature because of its attempt to bridge the theoretical foundations and market practices, which was performed to verify the gaps in corporative SRM process of Brazilian organizations. This study highlights for researchers and practitioners a relevant field of study whose importance is widely recognized but whose results remain scarce and limited.

Details

Social Responsibility Journal, vol. 14 no. 1
Type: Research Article
ISSN: 1747-1117

Keywords

Article
Publication date: 10 October 2023

Miguel Melo, Guilherme Gonçalves, Filipa Jorge, Nieves Losada, Luís Barbosa, Mário Sérgio Teixeira and Maximino Bessa

This paper aims to generate knowledge of the impact of different virtual reality (VR) set-ups in tourism promotion regarding destination image, place attachment and behavioural…

Abstract

Purpose

This paper aims to generate knowledge of the impact of different virtual reality (VR) set-ups in tourism promotion regarding destination image, place attachment and behavioural intention.

Design/methodology/approach

The paper presents a comparative study of the impact of different visualisation technologies (video, immersive VR and multisensory immersive VR) to promote tourism destinations. The study’s dependent variables are destination image, place attachment and behaviour intention.

Findings

Results show that VR content impacts these variables. Multisensory immersive VR is the preferred content type for destination promotion. It is also evidenced that female participants scored each variable higher than male participants. Males reported higher scores on the video set-up for destination image and place attachment. Behavioural intention reported higher values in the video when compared to immersive VR in both sexes.

Practical implications

This paper concludes that there is a preference towards multisensory set-ups, which suggests that incorporating audiovisual and sensory elements can significantly enhance the effectiveness of VR experiences in attracting and engaging potential tourists.

Originality/value

The paper contributes to the scarce body of knowledge regarding the impact of different VR factors on tourism promotion, including the multisensory VR component.

研究目的

本文旨在探讨不同虚拟现实(VR)设备在旅游推广中对目的地形象、地方依恋和行为意图的影响, 并增加对此方面的认识。

研究方法

本文对不同可视化技术(视频、沉浸式VR和多感官沉浸式VR)在旅游目的地推广中的影响进行了比较研究。研究的依赖变量包括目的地形象、地方依恋和行为意图。

研究发现

研究结果表明, VR内容对这些变量有影响。多感官沉浸式VR是目的地推广的首选内容类型。研究还证明, 女性参与者在每个变量上的评分高于男性参与者。男性在视频设备上对目的地形象和地方依恋评分较高。无论是在男性还是女性中, 视频在行为意图方面的得分都高于沉浸式VR。

实践价值

我们得出结论, 人们更偏好多感官设备, 这表明将视听和感官元素纳入虚拟现实体验可以显著提高吸引和吸引潜在游客的效果。

研究创新

本文对不同虚拟现实因素对旅游推广的影响, 包括多感官VR组成部分, 做出了有益的贡献。

Article
Publication date: 16 April 2018

Paula Raissa, Sérgio Dias, Mark Song and Luis Zárate

Currently, social network (SN) analysis is focused on the discovery of activity and social relationship patterns. Usually, these relationships are not easily and completely…

Abstract

Purpose

Currently, social network (SN) analysis is focused on the discovery of activity and social relationship patterns. Usually, these relationships are not easily and completely observed. Therefore, it is relevant to discover substructures and potential behavior patterns in SN. Recently, formal concept analysis (FCA) has been applied for this purpose. FCA is a concept analysis theory that identifies concept structures within a data set. The representation of SN patterns through implication rules based on FCA enables the identification of relevant substructures that cannot be easily identified. The authors’ approach considers a minimum and irreducible set of implication rules (stem base) to represent the complete set of data (activity in the network). Applying this to an SN is of interest because it can represent all the relationships using a reduced form. So, the purpose of this paper is to represent social networks through the steam base.

Design/methodology/approach

The authors’ approach permits to analyze two-mode networks by transforming access activities of SN into a formal context. From this context, it can be extracted to a minimal set of implications applying the NextClosure algorithm, which is based on the closed sets theory that provides to extract a complete, minimal and non-redundant set of implications. Based on the minimal set, the authors analyzed the relationships between premises and their respective conclusions to find basic user behaviors.

Findings

The experiments pointed out that implications, represented as a complex network, enable the identification and visualization of minimal substructures, which could not be found in two-mode network representation. The results also indicated that relations among premises and conclusions represent navigation behavior of SN functionalities. This approach enables to analyze the following behaviors: conservative, transitive, main functionalities and access time. The results also demonstrated that the relations between premises and conclusions represented the navigation behavior based on the functionalities of SN. The authors applied their approach for an SN for a relationship to explore the minimal access patterns of navigation.

Originality/value

The authors present an FCA-based approach to obtain the minimal set of implications capable of representing the minimum structure of the users’ behavior in an SN. The paper defines and analyzes three types of rules that form the sets of implications. These types of rules define substructures of the network, the capacity of generation users’ behaviors, transitive behavior and conservative capacity when the temporal aspect is considered.

Details

International Journal of Web Information Systems, vol. 14 no. 1
Type: Research Article
ISSN: 1744-0084

Keywords

Book part
Publication date: 28 November 2022

Sergio Schneider and Abel Cassol

Territorial food markets and governance have emerged as a key mechanism for the design and implementation new food systems and policies aimed at sustainable cities. However, the…

Abstract

Territorial food markets and governance have emerged as a key mechanism for the design and implementation new food systems and policies aimed at sustainable cities. However, the many existing policies tend to overlook the way food markets and supply strategies work. This chapter analyses governance in traditional agri-food markets in Brazil, aiming to demonstrate how, in different contexts, the economic interactions between actors are embedded in a set of social institutions (cultural values), which define modes of governance, participation in the markets and can be potential to fostering new (sustainable) rural-urban relations. These institutions challenge and compete with formal regulatory requirements imposed by the public authorities, which often disrupt and/or inhibit the development of local and traditional production and consumption practices, posing obstacles to the fostering rural-urban relations and the construction of solid local policies for food supply. Empirical data refer to three traditional Brazilian markets: the Feira do Pequeno Produtor in Passo Fundo, located in the South of Brazil, the Feira Central de Campina Grande and the Feira de Caruaru, both located in the Northeast of the country. The results point to the necessity and centrality to cities food supply policies recognise, encourage and institutionalise these markets traditional institutions in order to overcome supermarketisation and consolidate sustainable food systems. These process could be able to remove traditional markets from marginalise, promoting not only their survival, but their growth and consolidation as a source of decent work, healthy food and new sustainable rural-urban relationships.

Details

Food and Agriculture in Urbanized Societies
Type: Book
ISBN: 978-1-80117-770-2

Keywords

Article
Publication date: 5 July 2024

Rejane Santana da Silva, Gustavo Quiroga Souki, Alessandro Silva de Oliveira, Luís Sérgio Gonçalves Vieira and Manuel Serra

This study aimed to investigate the influence of the perceived quality by students regarding their experiences in vocational schools in tourism, hospitality and food service on…

Abstract

Purpose

This study aimed to investigate the influence of the perceived quality by students regarding their experiences in vocational schools in tourism, hospitality and food service on cognitive and affective responses (satisfaction, self-efficacy expectations and self-regulation strategies of motivation for learning - SRSML) and commitment (behavioural response).

Design/methodology/approach

A cross-sectional survey was conducted with 454 students from twelve Turismo de Portugal IP-affiliated schools. The theoretical framework was rooted in Self-Determination Theory (SDT) and PLS-SEM, using ADANCO 2.3 software to test the proposed model.

Findings

Perceived quality by students concerning their school experiences are socio-contextual factors that directly influence their satisfaction and self-efficacy expectations (cognitive and affective responses). Satisfaction and self-efficacy expectations positively affected SRSML. Finally, satisfaction and the SRSML positively impacted the students` commitment to schools (behavioural response).

Originality/value

This study contributes to academia by comprehensively addressing 16 perceived quality dimensions within vocational education. It aligns with SDT, revealing that socio-contextual factors affect students’ cognitive, affective, and behavioural responses. Additionally, it demonstrates positive relationships between student satisfaction, self-efficacy expectations, SRSML, and students’ commitment to vocational education institutions. This study emphasises the multidimensional nature of perceived quality, urging educational institutions to address tangible and intangible dimensions to develop strategies to provide high-quality experiences, increasing students` satisfaction, self-efficacy expectations, motivation, and commitment.

Details

International Journal of Educational Management, vol. 38 no. 6
Type: Research Article
ISSN: 0951-354X

Keywords

1 – 10 of 53