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1 – 10 of 299
Article
Publication date: 1 July 2006

Paulo Bartolo, Joel Vasco, Bruno Silva and Carlos Galo

Laser milling is a recent process in mould making, providing several advantages over traditional mould making technologies by reducing manufacturing time, shortening the number of…

1259

Abstract

Purpose

Laser milling is a recent process in mould making, providing several advantages over traditional mould making technologies by reducing manufacturing time, shortening the number of machining operations and avoiding expensive electrodes. This paper investigates the influence of the operating conditions on both the surface quality and material removal for two types of materials commonly used in mould making.

Design/methodology/approach

Laser scanning strategies and operating parameters like scanning speed and laser frequency and power were tested, regarding surface quality and material removal rate. The most representative parameter of the real surface quality, Rk, the core roughness parameter, is used to characterise the surface finishing on all cavities.

Findings

The findings of this research work suggest that it is possible to significantly reduce processing time by increasing the hatch spacing up to a value close to the laser beam spot diameter, without compromising surface quality. Lower pulse frequencies and laser power are more appropriate whenever surface quality is an issue. Higher material removal rates are achieved by increasing both the pulse frequency till an optimum value and laser power. The increase of scanning speed reduces the material removal rate by decreasing the overlap degree between individual laser pulses.

Originality/value

The originality is to correlate the influence of the operating conditions of laser milling on both the surface quality and material removal for different types of materials.

Details

Assembly Automation, vol. 26 no. 3
Type: Research Article
ISSN: 0144-5154

Keywords

Book part
Publication date: 10 April 2013

Maria Alice Nunes Costa, Carolina Doria Romeo Losicer, Jessica Guerra Inácio de Oliveira and Bruno Silva Faria

This chapter is a case study of Companhia Siderúrgica Nacional (CSN, National Steel Company, Volta Redonda, Rio de Janeiro, Brazil), in order to compare two models of social…

Abstract

This chapter is a case study of Companhia Siderúrgica Nacional (CSN, National Steel Company, Volta Redonda, Rio de Janeiro, Brazil), in order to compare two models of social responsibility adopted by the same company in two different historical periods: when it was state-owned company (since forties) and then when it was privatized in the 1990s. The results are preliminary for this case study, in that the research is ongoing. However, we can anticipate a main conclusion, that CSN has no social responsibility with its main stakeholders: the community of city Volta Redonda, where industrial activities are carried out. This research is relevant for future research in the comparative perspective, in poor or developing countries such as Brazil. We add that this study has led us to build the concept of territorial social responsibility, in order to broaden and move beyond the debate focused on social responsibility in the corporate world and move towards a transnational reflection of what is liability to the planet.

Details

The Governance of Risk
Type: Book
ISBN: 978-1-78190-781-8

Keywords

Content available
Book part
Publication date: 10 April 2013

Abstract

Details

The Governance of Risk
Type: Book
ISBN: 978-1-78190-781-8

Book part
Publication date: 10 April 2013

Güler Aras is Professor of Finance and Dean of the Faculty of Economics and Administrative Sciences, Yıldız Technical University, Turkey.

Abstract

Güler Aras is Professor of Finance and Dean of the Faculty of Economics and Administrative Sciences, Yıldız Technical University, Turkey.

Details

The Governance of Risk
Type: Book
ISBN: 978-1-78190-781-8

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

Abstract

Purpose

This study aims to assess the influence of partial and simultaneous substitution of fat and sodium by hydrolyzed collagen and mix of herbs (MH) in chicken hamburgers, on the physical properties and proximal composition.

Design/methodology/approach

Five formulations were developed: (1) HCON–without adding collagen and MH; (2) C25M25–adding 25% of collagen and 25% of MH; (3) C25M50–adding 25% of collagen and 50% of MH; (4) C50M25–adding 50% of collagen and 25% of MH and (5) C50M50–adding 50% of collagen and 50% of MH. Chicken hamburgers were analyzed by proximal composition, sodium content, collagen and color analysis. The influence of treatments on texture profile, cooking performance and lipid oxidation of chicken hamburger was also investigated.

Findings

There was reduction in lipid and sodium for modified formulations compared with the HCON. There was great influence for some parameters, such as luminosity, cooking performance and texture profile. The formulation C50M50 showed the best cooking performance when compared to the others.

Originality/value

The formulation adding 50% of collagen and 50% of MH showed the highest yield and water retention (WR), with the least reduction in diameter and shrinkage, as well as presenting the best indexes of the texture profile and the lowest oxidation index, being recommended as the best combination of fat and sodium replacement.

Details

British Food Journal, vol. 125 no. 1
Type: Research Article
ISSN: 0007-070X

Keywords

Article
Publication date: 3 July 2017

Dênis Gustavo Leonardo, Bruno Sereno, Daniel Sant Anna da Silva, Mauro Sampaio, Alexandre Augusto Massote and Jairo Celso Simões

Shop floor control systems are generally major points of discussion in production planning and control literature. The purpose of this paper is to investigate how lean production…

1631

Abstract

Purpose

Shop floor control systems are generally major points of discussion in production planning and control literature. The purpose of this paper is to investigate how lean production control principles can be used in a make-to-order (MTO) job shop, where the volume is typically low and there is high variety. This paper examines the procedures involved in implementing a constant work-in-process (CONWIP)/Kanban hybrid system in the shop floor environment and also provides insights and guidelines on the implementation of a hybrid system in a high-variety/low-volume environment.

Design/methodology/approach

The authors review literature on Kanban, CONWIP, and CONWIP/Kanban hybrid systems to analyze how lean production control principles can be used in a MTO job shop. The second part focuses on the process of implementation. Using a case study of a manufacturer of electromechanical components for valve monitoring and controls, the paper describes how the operation is transformed by for more efficient shop floor control systems. Real experiments are used to compare pre- and post-improvement performance.

Findings

The study shows that the proposed hybrid Kanban-CONWIP system reduced the cycle time and achieved an increase of 38 percent in inventory turnover. The empirical results from this pilot study provide useful managerial insights for a benchmarking analysis of the actions to be taken into consideration by companies that have similar manufacturing systems.

Research limitations/implications

The statistic generalization of the results is impossible due to the use of a single case method of study.

Originality/value

This paper provides insights and guidelines on the implementation of a hybrid system in a high-variety/low-volume environment. The literature on real applications of hybrid CONWIP/Kanban by case study is limited.

Details

Journal of Manufacturing Technology Management, vol. 28 no. 6
Type: Research Article
ISSN: 1741-038X

Keywords

Open Access
Article
Publication date: 15 July 2021

Julhete Mignoni, Bruno Anicet Bittencourt, Silvio Bitencourt da Silva and Aurora Carneiro Zen

This paper investigates the roles and activities of the orchestrators of innovation networks constituted within cities. In this sense, the authors expected to contribute for…

1169

Abstract

Purpose

This paper investigates the roles and activities of the orchestrators of innovation networks constituted within cities. In this sense, the authors expected to contribute for research related to the roles and activities of the orchestrators of innovation networks constituted in the scope of cities given the large number and diversity of complex and multiple dimensions social actors (Castells & Borja, 1996; Reypens, Lievens & Blazevic, 2019).

Design/methodology/approach

The authors conducted an exploratory research with a single case study in depth. The case chosen for the paper is the case of Pacto Alegre. The case selection criterion was the relevance of the Pacto Alegre Case in the construction of an innovation network in the city of Porto Alegre, Rio Grande do Sul, Brazil. The Pacto Alegre network was proposed by the Alliance for Innovation (composed of the three main Universities in the city: UFRGS, PUCRS and UNISINOS) and by the Municipality of Porto Alegre. In addition to these actors, the network counts on financial and development institutions as sponsors, with media partners, with design partners, with an advisory board (composed of five professionals considered references in different themes) and composed by more than 100 companies, associations and institutions from different areas (Pacto Alegre, 2019). Data were collected from 09/20/2020 to 11/30/2020 through in-depth interviews, documentary research and non-participant observation.

Findings

In this research, the authors highlighted the city as a community that involves and integrates various actors, such as citizens and companies, to collaborative innovation activities. For this, they proposed a framework on innovation networks and network orchestration. In this direction, seven dimensions of the “orchestration of innovation networks” were assumed as a result of the combination of previous studies by Dhanaraj and Parke (2006), Hurmelinna-Laukkanen et al. (2011) and da Silva and Bitencourt (2019). In the sequence, different roles of orchestrators associated with the literature were adopted based on the work by Pikkarainen et al. (2017) and Nielsen and Gausdal (2017).

Research limitations/implications

The authors’ results advance in relation to other fields by promoting the expansion of the “orchestration of innovation networks” model with the combination of distinct elements from the literature in a coherent whole (agenda setting, mobilization, network stabilization, creation and transfer of knowledge, innovation appropriability, coordination and co-creation) and in the validation of its applicability in the context of the innovation network studied. In addition, when relating different roles of orchestrators to the seven dimensions studied, it was realized that there is no linear and objective relationship between the dimensions and roles of the orchestrator, as in each dimension there may be more than one role being played in the orchestration.

Practical implications

Therefore, the findings suggest two theoretical contributions. First, the authors identified a role not discussed in the literature, here called the communicator. In the case analysis, the authors observed the communicator role through functions performed by a media partner of the innovation network and by a group of civil society engaged in the city's causes. Second, the authors indicated a new dimension of orchestration related to the management of communication in the innovation network and its externalities such as p. ex. civil and organized society, characteristic of an innovation network set up within a city.

Originality/value

Although several studies have proposed advances in the understanding of the orchestration of innovation networks (Dhanaraj & Parkhe, 2006; Ritala, Armila & Blomqvist, 2009; Nambisan & Sawhney, 2011; Hurmelinna-Laukkanen et al., 2011), the discussion on the topic is still a black box (Nilsen & Gausdal, 2017). More specifically, the authors identified a gap in the literature about the role and activities of actors in the city level. Few studies connected the regional dimension with the roles and activities of the orchestrators (Hurmelinna-Laukkanen et al., 2011; Pikkarainen et al., 2017), raising several challenges and opportunities to be considered by academics and managers.

Details

Innovation & Management Review, vol. 20 no. 3
Type: Research Article
ISSN: 2515-8961

Keywords

Article
Publication date: 24 August 2012

F.B. Bruno, T.L.K. Silva, R.P. Silva and F.G. Teixeira

The purpose of this paper is to propose a web‐based tool that enables the development and provision of learning designs and its reuse and re‐contextualization as generative…

1864

Abstract

Purpose

The purpose of this paper is to propose a web‐based tool that enables the development and provision of learning designs and its reuse and re‐contextualization as generative learning objects, aimed at developing educational materials.

Design/methodology/approach

The use of learning objects can facilitate the process of production and delivering of educational material and their reuse and re‐contextualization in different scenarios – such process is due to the current development stage of information and communication technologies (ICTs), which allow easy access to products and services related to them. ICTs combined with instructional design theories, lead to the emergence of new generations of distance learning, which add educational content to web‐based services. From this combination rises a hybrid mode of education, which combines tools for face‐to‐face and distance learning (blended learning).

Findings

The use of the web as a platform for production and management of learning objects comes as a solution for storage and sharing. The utilization of objects is justified when its reusability is facilitated. This gives rise to possibilities in a client‐server environment, where information is centralized and available anywhere in the network.

Research limitations/implications

The combination of ICT and instructional design theories has potential and could result in hybrids which are yet to be fully understood and explored. This can enhance blended learning provision.

Originality/value

The paper presents a tool in which the learning designs work as structures built on XML, based on concept maps, which act as an interaction layer between the learning objects, organizing the content to be available.

Details

Campus-Wide Information Systems, vol. 29 no. 4
Type: Research Article
ISSN: 1065-0741

Keywords

Article
Publication date: 15 June 2020

Laurentina Vareiro, Bruno Barbosa Sousa and Sónia Sousa Silva

This study reflects on heritage, culture and museums as vectors of the tourist development of a destination. Considering the challenges inherent in the efficient correlation of…

2236

Abstract

Purpose

This study reflects on heritage, culture and museums as vectors of the tourist development of a destination. Considering the challenges inherent in the efficient correlation of these three areas, this study intends to demonstrate the clear benefits resulting from knowledge sharing and effective cooperation.

Design/methodology/approach

Based on the objectives outlined, the authors conducted a survey of the visitors of the Costume Museum, which was chosen for being one of the unmistakable icons identifying the cultural heritage of Viana do Castelo (Portugal).

Findings

In an increasingly competitive tourist market, with demand resulting from growing specialization, the integration of museological spaces as patrimonial and cultural elements in the supply of tourist destinations is an important factor in differentiation and development.

Research limitations/implications

To enhance the importance of the Costume Museum in the process of the tourist development of the city, it is fundamental to define a clear strategy for attracting and responding to the greatest demand from cultural tourists who are increasingly interested in actively participating in learning experiences. It is believed that a larger sample could strengthen the conclusions, eventually more relevant and closer to the reality.

Practical implications

The results show that visitors to the Costume Museum very positively evaluated the museum with regard to several factors covered in this study. However, there is a great dependence on school visits. On the other hand, lower qualitative evaluations were made by older age groups and those with higher academic degrees, although the evaluations remain positive.

Social implications

The paper presents museums as a possible factor in tourism development and social inclusion, advancing practical measures aimed at social justice through a fairer distribution of tourism revenues and the defence of historic centre residents' way, and quality, of life.

Originality/value

This paper examines the importance of the Costume Museum in the tourist development of Viana do Castelo (Portugal). This study reflects on heritage, culture and museums as vectors of the tourist development of a destination. Particular attention is given to visitors' motivations for visiting and their opinions about the quality of service, satisfaction and loyalty regarding this museum.

Details

Journal of Cultural Heritage Management and Sustainable Development, vol. 11 no. 1
Type: Research Article
ISSN: 2044-1266

Keywords

1 – 10 of 299