Guilherme Barros, João Filho, Luiz Nunes and Marcel Xavier
The purpose of this paper is to experimentally validate the crack growth control based on the topological derivative of the famous Rice's integral.
Abstract
Purpose
The purpose of this paper is to experimentally validate the crack growth control based on the topological derivative of the famous Rice's integral.
Design/methodology/approach
Single edge notch tensile specimens with two configurations were tested. Displacement fields near notch were experimentally obtained using the digital image correlation method. These displacements were used to verify the minimization of the associated shape functional, which is defined in terms of the Rice's integral, when a set of controls (holes) positioned according to the topological derivative information, is inserted. Based on the Griffth's energy criterion, this minimization represents an improvement in the fracture toughness of cracked bodies.
Findings
The experimental tests confirmed that a decrease around 27% in the value of the associated shape functional can be obtained following this approach. Therefore, the results allow us to conclude that the predictive methodology for crack growth control based on the topological derivative is feasible.
Originality/value
This is the first work concerning experimental validation of crack growth control based on the topological derivative method.
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João Nunes and Luiz Montanheiro
In recent years, Portugal has followed the example of other Western countries, first by regulating access of private initiative into a variety of economic activities starting with…
Abstract
In recent years, Portugal has followed the example of other Western countries, first by regulating access of private initiative into a variety of economic activities starting with banking in 1985 and lately, selling state‐owned companies in 1989. Privatization has been seen as a key issue in the former Portuguese Prime Minister Cavaco Silva's reforms to enable Portugal to achieve a better socio‐economic performance. These reforms started before 1986, the period of European Union membership, having as main goals: economic growth, modernization of economic units, and increase of competitiveness within the European context. Indeed, within many of the privatization objectives, it is partly recognized that privatization played an important role in the Portuguese government's strategy, which was complemented by price liberalization, taxation, and financial system reforms.
Luis Farinha, Sara Nunes, João J. Ferreira and António Fernandes
This paper focuses on the issue of global competitive advantage of nations, based on the dimensions analyzed by the World Economic Forum in assessing the economic competitiveness…
Abstract
Purpose
This paper focuses on the issue of global competitive advantage of nations, based on the dimensions analyzed by the World Economic Forum in assessing the economic competitiveness of a large sample of countries. From the different stages of development of the countries, this study aims to help us to recognize what variables better explain the global competitive advantage of economies.
Design/methodology/approach
Following quantitative analysis, results based on PLS show what dimensions within each economic development stage best explain the global competitive advantage of economies.
Findings
Beyond the institutions, infrastructure and regulation of the markets, higher education and training, the technological readiness, the business sophistication and innovation contribute greatly to explain the competitive advantage of economies.
Originality/value
Understanding the drivers of global competitive advantage of nations, this study may help academics to conduct new studies, as well as politicians to define intervention priorities.
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The classic case for competitiveness as a force driving change was made by Charles Darwin in The Origin of Species by Natural Selection (1859). Adaptation, the ability to react…
Abstract
The classic case for competitiveness as a force driving change was made by Charles Darwin in The Origin of Species by Natural Selection (1859). Adaptation, the ability to react successfully to a changed environment, accounts for multiplicity in the world of nature. Long billed birds are better able to dip beneath the surface of shallow lagoons for their food; the sharp, hard, short beaks of certain finches allow them to crack nuts and seeds. Darwin's reading of nature, so immediately popular and at the same time so controversial, fit well within the goals of nineteenth‐century scientific thought. Tracing the causes of change to fixed, logical patterns allowed scientists to remove non‐objective elements from their equations for evolution. Such issues as value, valor, or virtue held no place in a system of analysis unless they had survival value.
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.
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André Luiz Maranhão de Souza-Leão, Bruno Melo Moura, Walber Kaíc da Silva Nunes, Vitor de Moura Rosa Henrique and Italo Rogerio Correia de Santana
Fans are proactive consumers of pop culture products, who can be seen as prosumers. Fanvideo production is one of their most widespread practices in the participatory culture…
Abstract
Purpose
Fans are proactive consumers of pop culture products, who can be seen as prosumers. Fanvideo production is one of their most widespread practices in the participatory culture scenario. Thus, the aim of the present study is to analyze how ludic prosumption is featured on plays performed in Brazilian fanvideos based on successful pop culture franchises.
Design/methodology/approach
Research based on the interpretive content analysis of fanvideos of plays produced by Brazilian fans based on five emblematic pop culture franchises and published on YouTube.
Findings
Results have shown six play types in the analyzed fanvideos – i.e. child's play, performing powers, cosplay, play in social rites, teaching to play and “zuêra” –, which revealed a way of having fun in different situations through different practices based on ludic consumption experiences in different spheres of social life.
Originality/value
CCT-based studies focused on investigating plays as ludic consumption phenomenon, as well as fan culture, remain at early research stage. Thus, the main contribution of the present study lies on associating such concepts based on the concept of prosumption.
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Jorge Yasuoka, Gabrielly Araújo Cordeiro, José Luiz Pereira Brittes, Robert Eduardo Cooper Ordóñez, Sergio Valdir Bajay and Eduardo Nunes
There is a great interest in developing eco-friendly operations as alternative uses of resources in the university campus, making the employment of technologies more sustainable…
Abstract
Purpose
There is a great interest in developing eco-friendly operations as alternative uses of resources in the university campus, making the employment of technologies more sustainable. Practices such as energy management and efficiency initiatives have been encouraged to meet these sustainability goals. The purpose of this paper is to describe and discuss the main features of the GENIIOT project, a system of energy management using Internet of Things applied in a Brazilian university campus to support energy education practices and to promote lasting energy efficiency measures. The focus of the study is directed at the energy consumption of the air-conditioning system, which is responsible for 40% of the total electricity consumption. In addition, this project also scrutinizes processes such as the building occupants’ comfort demands, lighting levels and energy waste control.
Design/methodology/approach
A case study at the Unicamp campus was conducted to illustrate the design procedures through qualitative description. This study comprises an overview of the physical plant, hardware and software development, energy data monitoring, management process and energy education.
Findings
The GENIIOT project enables energy efficiency actions by concerning the use of air-conditioning equipment based on monitored data, different types of monitored rooms, user’s behaviors and their feedback. This initiative requires the engagement, awareness and actions from users combined with investment in energy efficiency to achieve an efficient use of this type of equipment. The proposed approach can be applied in the future to similar situations, inside the Unicamp campus and at other university campuses. In addition, this project can contribute to building efficiency analysis by using the hardware structure developed to monitor facilities and carry out evaluations, providing valuable information for strategic initiatives in energy efficiency projects and research and development programs based on practical experience and promoting a discussion about sustainability aspects in the context of the university campus for energy efficiency.
Originality/value
The GENIIOT project is aligned with some of the sustainable development goals, among which sustainability and responsible consumption are identified. Considering the sustainability issues, the economic dimension can be evaluated through a cost–benefit analysis of energy efficiency projects with prudent investment, while the social attractiveness of the project is ensured by education and awareness practices for the community that interacts with the system and learns about a more efficient way of using resources in the campus. Furthermore, there is a more conscious use of natural resources by minimizing waste from the use of electricity and reducing carbon dioxide emissions. GENIIOT is part of Sustainable Campus Project, a living laboratory which aims at developing energy-efficiency-related research activities in the university campus to reduce costs in higher and federal institutions of education in Brazil.
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Juliano Nunes Alves, Moisés Pivetta Cogo, Leander Luiz Klein and Breno Augusto Diniz Pereira
The purpose of this study was to evaluate the influence of knowledge management (KM) drivers on perceived KM results in a public higher education institution. A structured…
Abstract
Purpose
The purpose of this study was to evaluate the influence of knowledge management (KM) drivers on perceived KM results in a public higher education institution. A structured theoretical model based on leadership, people, processes, knowledge processes, technology, learning and KM results was developed and tested.
Design/methodology/approach
A survey was conducted with the employees of a public higher education institution where an administrative reform was initiated. A valid sample of 257 respondents was obtained. The data were obtained from the application of a structured questionnaire based on the KM drivers and their results. A five-point Likert-type scale was used to measure respondents' answers. The main data analysis technique was structural equation modeling.
Findings
The results indicate knowledge processes, leadership and people factors have a positive and significant impact on KM results. On the other hand, organizational processes, technology and learning factors were not significant. However, the service length of servants in the institution influences the perception of knowledge drivers.
Practical implications
Public institutions should be attentive to people with more time of service because they may have difficulties with technological advances, reorganization of processes and adaptation to new ways of sharing knowledge.
Originality/value
This study advances on the analysis of KM results in the public sector and tests the moderation effect of time of service.
Details
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Numerous candidates supported by former far-right President Jair Bolsonaro performed well, with his own Liberal Party (PL) winning in the first round in two of the 26 state…
Details
DOI: 10.1108/OXAN-DB290161
ISSN: 2633-304X
Keywords
Geographic
Topical
Prospects for Brazil in 2025.