Denise Ferreira, Jesús Bairán, Antonio Marí and Rui Faria
A nonlinear finite element (FE) beam-column model for the analysis of reinforced concrete (RC) frames with due account of shear is presented in this paper. The model is an…
Abstract
Purpose
A nonlinear finite element (FE) beam-column model for the analysis of reinforced concrete (RC) frames with due account of shear is presented in this paper. The model is an expansion of the traditional flexural fibre beam formulations to cases where multiaxial behaviour exists, being an alternative to plane and solid FE models for the nonlinear analysis of entire frame structures. The paper aims to discuss these issues.
Design/methodology/approach
Shear is taken into account at different levels of the numerical model: at the material level RC is simulated through a smeared cracked approach with rotating cracks; at the fibre level, an iterative procedure guarantees equilibrium between concrete and transversal reinforcement, allowing to compute the biaxial stress-strain state of each fibre; at the section level, a uniform shear stress pattern is assumed in order to estimate the internal shear stress-strain distribution; and at the element level, the Timoshenko beam theory takes into account an average rotation due to shear.
Findings
The proposed model is validated through experimental tests available in the literature, as well as through an experimental campaign carried out by the authors. The results on the response of RC elements critical to shear include displacements, strains and crack patterns and show the capabilities of the model to efficiently deal with shear effects in beam elements.
Originality/value
A formulation for the nonlinear shear-bending interaction based on the fixed stress approach is implemented in a fibre beam model. Shear effects are accurately accounted during all the nonlinear path of the structure in a computationally efficient manner.
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Abstract
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The purpose of this paper is to discover and describe salient repeating and less common features of the recent medical literature about youth violence as it relates to mental…
Abstract
Purpose
The purpose of this paper is to discover and describe salient repeating and less common features of the recent medical literature about youth violence as it relates to mental health. How the relationship between youth violence and mental health is commonly conceptualized, investigated, and reported is summarized. Negative cases, unique approaches, and concepts are discussed.
Design/methodology/approach
An Ovid Medline literature search was conducted with the search parameters of “adolescent and violence” and “psychiatry or psychology or mental health.” In total, 66 articles met inclusion criteria and were analyzed using grounded theory procedures and techniques.
Findings
In all, 49 articles were reports of original research, 14 were literature reviews, and three were editorials. The articles included discussions of youth violence and mental health among young people in 49 countries. Most original research used cross-sectional designs that tested and supported the core hypothesis that greater exposure to violence is associated with more mental health issues. The relationship is robust even though characterizations of “exposure to violence” and “mental health” were highly variable. Meta-analytic and intervention studies were rare.
Originality/value
The core feature of the last decade of medical research has been the repeated testing and confirmation that a relationship between exposure to violence and mental health exists. Future youth violence research should move beyond continuing to test this hypothesis with cross-sectional study designs.
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This issue includes five of the best papers, from six different countries, presented in the Cladea Assembly of 2015. This introduction summarises the papers and presents an…
Abstract
This issue includes five of the best papers, from six different countries, presented in the Cladea Assembly of 2015. This introduction summarises the papers and presents an analysis of Latin American publications on management, and of the advantages and conditions for international collaboration. The first article looks at the positive impact of the decentralization of decision-making processes and the formalisation of work in the innovation of small and medium enterprises. The second studies the fear of failure in work and its relationship to demographic variables. The third analyses the impact of the domestic violence suffered by workers on customer services in Puerto Rican companies. The fourth discusses the relationship between teleworking and the work-family conflict, and finally, the fifth is aimed at optimising the management of dependent demand inventory systems.
This issue includes five articles chosen among the best papers presented at the Cladea Assembly of 2015 organised by Universidad de Valparaíso (Chile). The articles were sent in from Brazil, Chile, Colombia, Costa Rica, Spain, and Puerto Rico, and were the best assessed in the fields of organisational behaviour, leadership and human capital management, entrepreneurships and SMEs, technology management and innovation, and operations management and value chains.
The selection process began with the evaluation of the works sent to the conference for each topic. The author wish to thank the organisers, those in charge of each topic, and all the evaluators that helped select the best works. In particular, we thank Sergio Olavarrieta, José Ernesto Amorós, Jorge Ayala, Silvio Borrero, Daniel Cabrera, Reinaldo Calvo, Consuelo García, Valeska Geldres, Jorge Gilbert, Olga Pizarro, José Antonio Robles, and Jorge Tarzijan. Authors interested in publishing their articles were asked to send in a revised version. These new versions were then subjected to a double blind evaluation, and subsequent revisions until reaching the current publication. This has been a collective process in which dozens of academics from all the Cladea schools and countries have taken part.
Resumen
Este número incluye cinco de los mejores trabajos presentados en la asamblea de Cladea 2015, provenientes de seis países. En la presente introducción se resumen y comentan los trabajos, se ofrece un análisis acerca de las publicaciones latinoamericanas sobre gerencia y de las ventajas y condiciones de la colaboración internacional. El primer artículo analiza el positivo impacto de la descentralización de las decisiones y la formalización del trabajo en la innovación de las PYMES. El segundo estudia el miedo al fracaso en el trabajo y su relación con variables demográficas. El tercero analiza el impacto en el servicio al cliente de la violencia doméstica experimentada por trabajadoras en empresas de Puerto Rico. El cuarto estudia la relación entre el trabajo a distancia en el hogar (teletrabajo) y el conflicto familia-empresa. El quinto se orienta a optimizar el manejo de inventarios en sistemas con demanda dependiente.
En este número publicamos cinco artículos escogidos entre las mejores ponencias presentados en la Asamblea de CLADEA 2015 organizada por la Universidad de Valparaíso (Chile). Los artículos provienen de Brasil, Chile, Colombia, Costa Rica, España y Puerto Rico, y fueron los mejor evaluados en los temas de comportamiento organizacional, liderazgo y gestión del capital humano, emprendimientos y PYMES (pequeña y mediana empresa), gestión tecnológica e innovación, y gestión de operaciones y cadena de valor.
El proceso de selección se inició por las evaluaciones que se hicieron en cada tema para aceptar los trabajos enviados a la asamblea. Debemos agradecer a los organizadores, a los encargados de cada tema y a todos los evaluadores que permitieron tener una selección de los mejores trabajos, en especial a Sergio Olavarrieta, José Ernesto Amorós, Jorge Ayala, Silvio Borrero, Daniel Cabrera, Reinaldo Calvo, Consuelo García, Valeska Geldres, Jorge Gilbert, Olga Pizarro, José Antonio Robles, y Jorge Tarzijan. Posteriormente desde esta revista procedimos a solicitar versiones revisadas a los autores que estuvieran interesados en publicarlos, versiones sometidas a evaluación doble ciego, que llevaron a posteriores revisiones hasta la publicación actual. Ha sido un proceso colectivo donde participaron docenas académicos de todas las escuelas y países de Cladea.
Tuija Virtanen, Mari Tuomaala and Emilia Pentti
Purpose – The accounting literature has demonstrated increased concern over issues of sustainability. One of the most critical issues that corporations face at the moment is…
Abstract
Purpose – The accounting literature has demonstrated increased concern over issues of sustainability. One of the most critical issues that corporations face at the moment is climate change. This especially concerns companies that are substantial consumers of materials and energy. Corporations have increasingly acknowledged that to address this issue the existing ways of managing business must be changed.
This study examines the challenges posed by measurement of energy efficiency performance in an energy-intensive industry. It covers the challenges encountered with respect to the energy efficiency indicator and its use as a management tool.
Methodology – The case study method was used to conduct the research, which took place in a single firm in an energy-intensive process industry.
Findings – The results indicate that the current energy efficiency indicator, specific energy consumption (SEC), does not meet the criteria for good performance measurement. In particular, the controllability of energy efficiency seems problematic. Another major challenge is target setting. Measurable targets are needed to identify and prioritise areas where consumption and emission can be reduced.
Practical implications – The study provides practical knowledge on what is happening in organisations that pursue sustainable development and in particular, environmental efficiency.
Originality/value – Although the conceptual challenges in energy efficiency measurement are well known in the technical literature, discussions dealing with its management have been few in number. This study is a cross-disciplinary work and combines technical energy efficiency literature and management accounting research on performance management.
Nicola Miglietta, Enrico Battisti, Elias Carayannis and Antonio Salvi
The purpose of this paper is to investigate the relationship between capital structure and business process management (BPM) within ambidextrous firms. In particular, referring to…
Abstract
Purpose
The purpose of this paper is to investigate the relationship between capital structure and business process management (BPM) within ambidextrous firms. In particular, referring to the listed companies in the Mercato Telematico Azionario (MTA) and Mercato degli Investment Vehicles (MIV) markets with large- and mid-sized capitalization, divided into ambidextrous and non-ambidextrous companies, the authors examined the capital structure to fill a gap in the current literature.
Design/methodology/approach
This study uses a mixed-method sequential exploratory design. In particular, a qualitative study was conducted to identify some Italian-listed companies, called ambidextrous firms, which have implemented incremental (exploitative) and radical (explorative) innovations in an ambidexterity perspective of process management. A quantitative study was designed to provide insights into the different degrees of leverage of the listed companies selected by the qualitative analysis.
Findings
The research is based on an empirical analysis undertaken with 69 companies listed on Italian markets (starting from the MTA and MIV Italy 100 – large- and mid-sized capitalization). In particular, the authors highlight 11 companies that, based on the literature, can be defined as ambidextrous organizations. These firms, in each year analyzed (2014, 2015, and 2016), have more leverage than non-ambidextrous ones. Considering that firms today need to constantly revisit their portfolio of debt and equity, ambidextrous organizations could evaluate the largest debt available in order to implement new BPM tools.
Originality/value
To the authors’ knowledge, this is the first exploratory study based on capital structure and the simultaneous exploration and exploitation of knowledge (ambidexterity) that also is informed by a BPM perspective. The paper presents evidence from Italian-listed companies that are referred to as ambidextrous and have different degrees of leverage.
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Jules Naudet and Shirin Shahrokni
This chapter explores the class identities of upwardly mobile and middle-class members of racial minorities in France and the United States. Through in-depth interviewing with…
Abstract
This chapter explores the class identities of upwardly mobile and middle-class members of racial minorities in France and the United States. Through in-depth interviewing with African Americans and descendants of North African immigrants in, respectively, the United States and France, and comparing these with their counterparts of the racially dominant group, the chapter shows that racial processes significantly shape the mobility experiences and the range of dilemmas, challenges and identity negotiations faced by our minority respondents. Drawing on the Critical Race Theory and on the minority culture of mobility theory (Neckerman, Carter, & Lee., 1999), it suggests that the ongoing salience of racial discrimination coupled with the maintenance of ties with socially disadvantaged members of their groups significantly shape the ways in which our respondents make sense of their class location. The chapter further points to under-researched nation-specific ideological repertoires in shaping our respondents’ mobility experiences and class identities.