Search results
1 – 10 of 52Sebastião M. Neto, Sérgio Dias, Rokia Missaoui, Luis Zárate and Mark Song
In recent years, the increasing complexity of the hyper-connected world demands new approaches for social network analysis. The main challenges are to find new computational…
Abstract
Purpose
In recent years, the increasing complexity of the hyper-connected world demands new approaches for social network analysis. The main challenges are to find new computational methods that allow the representation, characterization and analysis of these social networks. Nowadays, formal concept analysis (FCA) is considered an alternative to identifying conceptual structures in a social network. In this FCA-based work, this paper aims to show the potential of building computational models based on implications to represent and analyze two-mode networks.
Design/methodology/approach
This study proposes an approach to find three important substructures in social networks such as conservative access patterns, minimum behavior patterns and canonical access patterns. The present study approach considered as a case study a database containing the access logs of a cable internet service provider.
Findings
The result allows us to uncover access patterns, conservative access patterns and minimum access behavior patterns. Furthermore, through the use of implications sets, the relationships between event-type elements (websites) in two-mode networks are analyzed. This paper discusses, in a generic form, the adopted procedures that can be extended to other social networks.
Originality/value
A new approach is proposed for the identification of conservative behavior in two-mode networks. The proper implications needed to handle minimum behavior pattern in two-mode networks is also proposed to be analyzed. The one-item conclusion implications are easy to understand and can be more relevant to anyone looking for one particular website access pattern. Finally, a method for a canonical behavior representation in two-mode networks using a canonical set of implications (steam base), which present a minimal set of implications without loss of information, is proposed.
Details
Keywords
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
Keywords
Luis Zárate, Marcos W. Rodrigues, Sérgio Mariano Dias, Cristiane Nobre and Mark Song
The scientific community shares a heritage of knowledge generated by several different fields of research. Identifying how scientific interest evolves is relevant for recording…
Abstract
Purpose
The scientific community shares a heritage of knowledge generated by several different fields of research. Identifying how scientific interest evolves is relevant for recording and understanding research trends and society’s demands.
Design/methodology/approach
This article presents SciBR-M, a novel method to identify scientific interest evolution from bibliographic material based on Formal Concept Analysis. The SciBR-M aims to describe the thematic evolution surrounding a field of research. The method begins by hierarchically organising sub-domains within the field of study to identify the themes that are more relevant. After this organisation, we apply a temporal analysis that extracts implication rules with minimal premises and a single conclusion, which are helpful to observe the evolution of scientific interest in a specific field of study. To analyse the results, we consider support, confidence, and lift metrics to evaluate the extracted implications.
Findings
The authors applied the SciBR-M method for the Educational Data Mining (EDM) field considering 23 years since the first publications. In the digital libraries context, SciBR-M allows the integration of the academy, education, and cultural memory, in relation to a study domain.
Social implications
Cultural changes lead to the production of new knowledge and to the evolution of scientific interest. This knowledge is part of the scientific heritage of society and should be transmitted in a structured and organised form to future generations of scientists and the general public.
Originality/value
The method, based on Formal Concept Analysis, identifies the evolution of scientific interest to a field of study. SciBR-M hierarchically organises bibliographic material to different time periods and explores this hierarchy from proper implication rules. These rules permit identifying recurring themes, i.e. themes subset that received more attention from the scientific community during a specific period. Analysing these rules, it is possible to identify the temporal evolution of scientific interest in the field of study. This evolution is observed by the emergence, increase or decrease of interest in topics in the domain. The SciBR-M method can be used to register and analyse the scientific, cultural heritage of a field of study. In addition, the authors can use the method to stimulate the process of creating knowledge and innovation and encouraging the emergence of new research.
Details
Keywords
Susana Campos, José G. Dias, Mário Sérgio Teixeira and Ricardo Jorge Correia
This study focuses on intellectual capital (IC) as a driver of better business performance. Recent studies suggest that a set of variables may mediate this relationship. This…
Abstract
Purpose
This study focuses on intellectual capital (IC) as a driver of better business performance. Recent studies suggest that a set of variables may mediate this relationship. This research discusses the mediating role of dynamic capabilities, network competence, technological capabilities, absorptive capabilities and innovation performance between intellectual capital and business performance.
Design/methodology/approach
The conceptual model is tested using a sample of 533 Portuguese firms by means of a structural equation model.
Findings
It confirms that intellectual capital impacts business performance. Moreover, this only happens indirectly through the mediating chain defined by the variables dynamic capabilities, network competence, technological capabilities, absorptive capabilities and innovation performance.
Originality/value
This study analyzes new mediator variables between the dimensions of the intellectual capital and Portuguese business performance.
Details
Keywords
Ricardo Jorge Correia, Mário Sérgio Teixeira and José G. Dias
This paper aims to explore a new causal link between learning, market and entrepreneurial orientations and firms' performance by introducing dynamic capabilities and competitive…
Abstract
Purpose
This paper aims to explore a new causal link between learning, market and entrepreneurial orientations and firms' performance by introducing dynamic capabilities and competitive advantages as mediator variables.
Design/methodology/approach
The mediating role of dynamic capabilities and competitive advantages is tested using a sample of 1,190 Portuguese firms, and structural equation models.
Findings
It is shown that dynamic capabilities mediate the relationship between the three orientations–learning, market and entrepreneurial–and competitive advantages of differentiation and cost leadership, and both competitive advantages lead to firm's performance. It is also shown that learning orientation is an antecedent of market orientation and entrepreneurial orientation.
Practical implications
This research shows that firm's performance depends on the capacity of firms to learn, innovate, be proactive, take risks and collect the best market data. Indeed, by optimizing the internal management and knowledge dissemination, firms will develop a set of capabilities and competitive advantages that lead to an appropriate response to market challenges.
Originality/value
This study tests the relationship between strategic orientations and firm's performance by taking the mediating effects of dynamic capabilities and competitive advantages into account. This research was conducted in Portugal.
Details
Keywords
Ricardo Jorge Correia, José G. Dias, Mário Sérgio Teixeira and Susana Campos
The complexity of the firm’s external environment, with its constant changes, forces managers to develop novel strategies that can meet new strategic needs. The purpose of this…
Abstract
Purpose
The complexity of the firm’s external environment, with its constant changes, forces managers to develop novel strategies that can meet new strategic needs. The purpose of this study is to examine the role of reward systems (RSs) in strategic management, as well as their relationship to learning and entrepreneurial orientation (EO), commonly referred to as the driving force behind growth, competitive advantages (CAs) and improved performance. It also focuses on the study of the relationship between EO and business performance (BP), the introduction and testing of the possible antecedents of this relationship and potential mediating factors.
Design/methodology/approach
A conceptual model was tested on a sample of 1,190 Portuguese firms using a structural equation model.
Findings
It is shown for the first time that learning orientation (LO) is an antecedent of the RSs and, subsequently, of EO. Additionally, the CAs of differentiation and cost leadership play a mediating role in the relationship between EO and BP. Furthermore, RSs are also a driving force behind both CAs.
Originality/value
This study makes several empirical and theoretical contributions, addressing the gap in the literature about the role of RSs in strategic management. It tests the relationship between LO and the firm’s performance by taking the mediating effects of RSs, EO and CAs into account. Additionally, we discuss LO as an antecedent strategic variable of human resources practices, in particular, RSs. Finally, we broaden the scope of our research by examining these issues in the context of Portuguese SMEs from different industries.
Details
Keywords
Ricardo Jorge Correia, José G. Dias and Mário Sérgio Teixeira
This paper aims to explore a new causal link between market orientation and business performance by introducing dynamic capabilities as a mediator of the relationship between…
Abstract
Purpose
This paper aims to explore a new causal link between market orientation and business performance by introducing dynamic capabilities as a mediator of the relationship between market orientation and competitive advantages, which ultimately determine business performance.
Design/methodology/approach
The mediating roles of dynamic capabilities and competitive advantages are tested with a sample of 1,190 Portuguese firms using a structural equation model.
Findings
The results confirm the hypotheses regarding the mediating roles of the competitive advantages (differentiation and cost leadership) in the relationship between dynamic capabilities and business performance. Additionally, dynamic capabilities also mediate the relationship between market orientation and competitive advantages.
Practical implications
This study shows that business performance depends on the capacity of firms to collect the best market information on customers and competitors, to disseminate this information throughout their internal structure and ultimately optimize its use to respond appropriately to market challenges and trends. These will provide firms with a set of capabilities and a competitive advantage.
Originality/value
This study provides empirical evidence on the understanding of the relationship between market orientation and performance, through the mediating effects of both dynamic capabilities and competitive advantages.
Details
Keywords
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
Keywords
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
Keywords
Gustavo Lucas Higa, Marcos César Alvarez and Roxana Pessoa Cavalcanti
This chapter makes a brief incursion through a trajectory of over three decades of activism by the Centre for the Study of Violence at the University of São Paulo (Núcleo de…
Abstract
This chapter makes a brief incursion through a trajectory of over three decades of activism by the Centre for the Study of Violence at the University of São Paulo (Núcleo de Estudos da Violência in Portuguese, NEV) in Brazil, recovering the legacy of its forms of activism and academic reflection while analysing the interfaces between violence and democracy in Brazil. The 1980s in Brazil were marked by expectations of profound political and social changes in the context of democratic transition. After 21 years of dictatorship (1964–1985), the military gradually withdrew from government, returning the state’s executive branch to civilian representatives. This was a moment of optimism for progressive groups and social movements, which had fought to dismantle the tradition of arbitrariness and violations of rights perpetrated by the state during the military dictatorship. In this context, NEV was founded as a research unit linked to the Faculty of Philosophy, Letters and Human Sciences. Its core academic objective was to analyse and scientifically denounce the conjuncture of violence and human rights violations that remained recurrent; consequently, it demonstrated the continuity of unequal power relations, social and cultural practices that fuel authoritarianism in times considered not authoritarian.
Details