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Article
Publication date: 1 March 1994

Jorge Neves, Manuela Neves and Katja Janssens

Seeks to integrate the complete design process beginning with a design created with the mathematical perception of fractal geometry, followed by the introduction of these images…

816

Abstract

Seeks to integrate the complete design process beginning with a design created with the mathematical perception of fractal geometry, followed by the introduction of these images into CAD systems and its adjustment to the technical and aesthetic limitations of the printing industry. The result is an artwork created on a pure mathematical basis using the most recent techniques of computer‐aided textile design.

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International Journal of Clothing Science and Technology, vol. 6 no. 1
Type: Research Article
ISSN: 0955-6222

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Article
Publication date: 1 February 2009

Filipa Lopes, Jorge Neves, Ana Campos and Radim Hrdina

Microencapsulated organic thermochromic pigments may have varied industrial applications, such as in windows and greenhouse roofs. Two black coloured commercial microencapsulated…

47

Abstract

Microencapsulated organic thermochromic pigments may have varied industrial applications, such as in windows and greenhouse roofs. Two black coloured commercial microencapsulated pigments from A and B brands are used in this work. The study is conducted with UVA irradiation, and simulation of atmospheric conditions (weathering tester QUV). After a few degradation cycles, the colour of the substrate becomes a yellowish hue, which suggests that chemical degradation of the components of the microcapsule has occurred. Some tests that include DSC are carried out in order to obtain information on the composition of the microcapsules.

Extraction with organic solvents provides several fractions that are analysed by 1H-NMR and IR. It is concluded that the material of the microcapsules is melamine formaldehyde and two of the core components are probably crystal violet and benzotriazole, which are assumed to act as a UV absorber and promoter of proton transfer. SEM analyses of the pigments before and after degradation show that the microcapsules maintain their shape. A study is also implemented on the effect of adding DABCO to the suspensions of the pigments, which are then irradiated with UV light. A somewhat protecting effect is observed.

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Research Journal of Textile and Apparel, vol. 13 no. 1
Type: Research Article
ISSN: 1560-6074

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Article
Publication date: 8 June 2015

Hugo Neves de Melo, João P. Trovão, Carlos Henggeler Antunes, Paulo G. Pereirinha and Humberto M. Jorge

The purpose of this paper is to present a prospective study of sustainable mobility in the framework of a supporting energy management systems (EMS). Technological advances are…

1109

Abstract

Purpose

The purpose of this paper is to present a prospective study of sustainable mobility in the framework of a supporting energy management systems (EMS). Technological advances are still required, namely electric vehicles (EV) endowed with improved EMS in order to increase their performance by making the most of available energy storage technologies. As EVs may be seen as a special domestic load, EMS are proposed based on demand-sensitive pricing strategies such as the Energy Box discussed in this paper.

Design/methodology/approach

The study presents an overview of electric mobility and an urban EV project, with special focus on the utilization of its energy sources and their relation with the energy demand of a typical urban driving cycle. Results based on the ECE 15 standard driving cycle for different free market electricity tariffs are presented.

Findings

The analysis based on present Portuguese power and energy tariffs reveals that it is highly questionable whether the resulting profit will be enough to justify the potential inconveniences to the vehicle user, as well as those resulting from the increased use of batteries.

Practical implications

The conclusions indicate that more studies on the trade-offs between grid to vehicle and vehicle to grid schemes and electricity pricing mechanisms are needed in order to understand how the utilization of EVs can become more attractive in the end-users’ and utilities’ perspectives.

Originality/value

The paper proposes an approach for future electricity tariff behavior that could be applied to EVs in order to understand whether or not their grid integration in charge and discharge situations would be beneficial for end-users and utilities, in the framework of smart energy management technologies.

Details

Management of Environmental Quality: An International Journal, vol. 26 no. 4
Type: Research Article
ISSN: 1477-7835

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Article
Publication date: 9 August 2024

Pedro A. Fernandes, João Carvalho das Neves and Jorge Caiado

This paper studies diversification and value in the investment portfolios of (non-listed) Real Estate Investment Funds (REIFs) exploring how the value of diversification is…

97

Abstract

Purpose

This paper studies diversification and value in the investment portfolios of (non-listed) Real Estate Investment Funds (REIFs) exploring how the value of diversification is captured by the market and by investors (beyond reported valuations).

Design/methodology/approach

We apply the Herfindahl-Hirschman Index (HHI) to study the level of concentration versus diversification in the investment portfolios of REIFs (both in terms of segment and geographical diversification). We use a dataset from INREV with data from 62 investment portfolios, with an average of 86 REIFs per portfolio for the period of 2008–2020 (to study segment diversification). We use a second dataset from INREV with data from 30 investment portfolios with an average of 79 REIFs per portfolio for the period of 2005–2020 (to study geographical diversification). We employ a cluster analysis approach to identify common features among the investment funds.

Findings

We conclude that (segment diversified) portfolios with higher degrees of leverage exhibit higher income yields, albeit diversification is captured indirectly through asset choices – more diversified portfolios tend to exhibit a stronger risk and return relationship. Also, geographical diversification creates value (more significantly by for the correct combination of countries carefully choosing what different geographies to group in the diversified portfolio).

Research limitations/implications

One limitation of our study is that our portfolios are funds of funds, since the available data could not reach the asset detail, but we believe this does not compromise our results.

Practical implications

Diversification leads to higher risk-adjusted returns which suggests that properties may be undervalued (market value) in the framework of the Gordon Model, contrary to expectations (regarding investment value).

Originality/value

Investors capture the value of diversification differently, suggesting a gap between market value and investment value that can be explored.

Details

Journal of Property Investment & Finance, vol. 42 no. 6
Type: Research Article
ISSN: 1463-578X

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Article
Publication date: 8 February 2021

Clarice Secches Kogut, Luíza Neves Marques da Fonseca and Jorge Ferreira da Silva

The purpose of this work is to explore what determines a country’s entrepreneurial environment attractiveness, by understanding how countries compare regarding their business…

549

Abstract

Purpose

The purpose of this work is to explore what determines a country’s entrepreneurial environment attractiveness, by understanding how countries compare regarding their business environment and entrepreneurial opportunities and whether such aspects have changed over time.

Design/methodology/approach

Through a longitudinal country-level cluster analysis of business environments (years 2001 and 2016), this study captures changes in classification of both emerging and developed market economies throughout an attractiveness spectrum, from least to most attractive environments.

Findings

Interesting findings involve the difference in trajectories of emerging economies, such as India compared to the stagnation of Brazil, Argentina and South Korea in the 15-year period. The paper seeks to contribute to the debate on the attractiveness of the entrepreneurial environment beyond the simple notion of most and least economically developed countries by providing a framework for dynamic cross-country analysis of entrepreneurial environmental attractiveness that can be further explored, tested and expanded.

Research limitations/implications

Main limitations relate to the non-exhaustive sample of countries and variables. Contributions are both academic and managerial: helping to fill important research gaps in international entrepreneurship, namely, environmental conditions, cross-country comparisons (Coombs et al., 2009) and the understanding of elements of the investment climate (Stern, 2002); and assisting managers, entrepreneurs and policymakers understand what defines a country’s entrepreneurial environment attractiveness to better evaluate potential locations for investment.

Originality/value

The originality of the paper lies in using cluster analysis in a longitudinal study of country attractiveness, as well as in advancing the debate of country attractiveness, by adding a temporal dimension (from factors that are less structural to more conjunctural) and a comparative dimension in a new cross-country comparison framework of analysis.

Details

Competitiveness Review: An International Business Journal , vol. 32 no. 4
Type: Research Article
ISSN: 1059-5422

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Article
Publication date: 3 October 2023

Luíza Neves Marques da Fonseca, Angela da Rocha and Jorge Brantes Ferreira

This paper aims to investigate the divestment behavior of emerging market multinationals from Latin America – multilatinas – by examining how their foreign market entry decision…

253

Abstract

Purpose

This paper aims to investigate the divestment behavior of emerging market multinationals from Latin America – multilatinas – by examining how their foreign market entry decision impacts the likelihood of subsidiary divestment.

Design/methodology/approach

The hypotheses are tested using Cox’s proportional hazard rate model in a longitudinal database of Brazilian multinational companies established in 43 countries.

Findings

Results indicate that these subsidiaries can thrive in environments that bear similarities to their home country, being less likely to divest in institutionally weak countries. Contrary to developed country multinationals, these firms benefit from foreign entry decisions that entail handling partnerships abroad; thus, wholly-owned greenfield (WOGF) investments have a higher likelihood of being divested.

Originality/value

To the best of the authors’ knowledge, this paper is the first to analyze foreign divestment from multilatinas, accounting for how entry mode strategy and host country institutions may impact these firms’ de-internationalization.

Details

European Business Review, vol. 36 no. 1
Type: Research Article
ISSN: 0955-534X

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Article
Publication date: 12 January 2024

Maria Neves, Catarina Proença, Beatriz Cancela and Zelia Serrasqueiro

The purpose of this study is to examine the determinants of the level of indebtedness in the health sector in Portugal, taking into account the effects of the COVID-19 pandemic…

99

Abstract

Purpose

The purpose of this study is to examine the determinants of the level of indebtedness in the health sector in Portugal, taking into account the effects of the COVID-19 pandemic. At the same time, an attempt is made to understand whether the effect of a pandemic crisis is similar to that of a financial crisis.

Design/methodology/approach

To achieve this aim, two subperiods were analyzed: a global period between 2011 and 2020 that includes the pandemic crisis and the period between 2011 and 2014, designated as the financial assistance period by the “Troika” in Portugal. For a sample of 514 companies belonging to the NACE code: 86100 – activities of the health sector with hospitalization, the panel data methodology was applied, specifically, the generalized method of moments system proposed by Arellano and Bover (1995) and Blundell and Bond (1998).

Findings

The results of the study are in line with the Pecking-order explanatory theory, demonstrating that companies in this sector follow a financing hierarchy, preferentially resorting to internally generated funds and external debt. Additionally, the results reveal that the capital structure of companies has changed due to the COVID-19 pandemic. As for the period of financial assistance, there are no major differences in evidence when the total debt ratio is considered. The results suggest different impacts when it comes to a bear market period caused by a health crisis or a period of growing economic slowdowns.

Originality/value

As far as we know, this is the first study that analyses the debt levels in the context of the health sector in a country with a financial system based on the bank sector, using short- and long-term debt ratios, taking into account the particularities of two different moments considered to be bear market that may eventually be useful for comparison with other bear market moments in other macroeconomic environments.

Propósito

El objetivo principal de este estudio es examinar los determinantes del nivel de endeudamiento en el sector de la salud en Portugal, teniendo en cuenta los efectos de la pandemia de COVID-19. Al mismo tiempo, se intenta comprender si el efecto de una crisis pandémica es similar al de una crisis financiera.

Diseño/metodología/enfoque

Para lograr este objetivo, se analizaron dos subperíodos: un período global entre 2011 y 2020 que incluye la crisis pandémica y el período entre 2011 y 2014, designado como el período de asistencia financiera por la “Troika” en Portugal. Para una muestra de 514 empresas pertenecientes al código NACE: 86100 – actividades del sector de la salud con hospitalización, se aplicó la metodología de datos de panel, específicamente, el método generalizado de momentos (GMM)-sistema propuesto por Arellano y Bover (1995) y Blundell y Bond (1998).

Resultados

Los resultados del estudio están en línea con la teoría explicativa del “Pecking-order”, demostrando que las empresas en este sector siguen una jerarquía de financiamiento, recurriendo preferentemente a fondos generados internamente y deuda externa. Además, los resultados revelan que la estructura de capital de las empresas ha cambiado debido a la pandemia de COVID-19. En cuanto al período de asistencia financiera, no hay diferencias significativas en la evidencia cuando se considera la proporción total de deuda. Los resultados sugieren impactos diferentes cuando se trata de un período de mercado bajista causado por una crisis de salud o un período de crecimiento económico más lento.

Originalidad/valor

Hasta donde sabemos, este es el primer estudio que analiza los niveles de deuda en el contexto del sector de la salud en un país con un sistema financiero basado en el sector bancario, utilizando ratios de deuda a corto y largo plazo, teniendo en cuenta las particularidades de dos momentos diferentes considerados como momentos de mercado bajista que eventualmente pueden ser útiles para comparar con otros momentos de mercado bajista en otros entornos macroeconómicos.

Objetivo

O principal objetivo deste estudo é examinar os determinantes do nível de endividamento no setor de saúde em Portugal, levando em consideração os efeitos da pandemia de COVID-19. Ao mesmo tempo, tenta-se compreender se o efeito de uma crise pandêmica é semelhante ao de uma crise financeira.

Design/metodologia/abordagem

Para atingir esse objetivo, foram analisados dois subperíodos: um período global entre 2011 e 2020, que inclui a crise pandêmica, e o período entre 2011 e 2014, designado como o período de assistência financeira pela “Troika” em Portugal. Para uma amostra de 514 empresas pertencentes ao código NACE: 86100 – atividades do setor de saúde com hospitalização, foi aplicada a metodologia de dados em painel, especificamente o método generalizado de momentos (GMM)-sistema proposto por Arellano e Bover (1995) e Blundell e Bond (1998).

Resultados

Os resultados do estudo estão de acordo com a teoria explicativa da ordem de preferência (“Pecking-order”), demonstrando que as empresas neste setor seguem uma hierarquia de financiamento, recorrendo preferencialmente a fundos gerados internamente e dívida externa. Além disso, os resultados revelam que a estrutura de capital das empresas mudou devido à pandemia de COVID-19. No que diz respeito ao período de assistência financeira, não há diferenças significativas na evidência quando se considera a proporção total de dívida. Os resultados sugerem impactos diferentes quando se trata de um período de mercado em baixa causado por uma crise de saúde ou um período de desaceleração econômica.

Originalidade/valor

Até onde sabemos, este é o primeiro estudo que analisa os níveis de dívida no contexto do setor de saúde em um país com um sistema financeiro baseado no setor bancário, utilizando índices de dívida de curto e longo prazo, levando em consideração as particularidades de dois momentos diferentes considerados como momentos de mercado em baixa que eventualmente podem ser úteis para comparação com outros momentos de mercado em baixa em outros ambientes macroeconômicos.

Details

Management Research: Journal of the Iberoamerican Academy of Management, vol. 22 no. 1
Type: Research Article
ISSN: 1536-5433

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Article
Publication date: 6 February 2017

Helena Barranha, João Vieira Caldas and Rita Nobre Neto da Silva

The purpose of this paper is to discuss the role of contemporary architecture in heritage protection, reinterpretation and reuse, an issue that has become increasingly relevant…

545

Abstract

Purpose

The purpose of this paper is to discuss the role of contemporary architecture in heritage protection, reinterpretation and reuse, an issue that has become increasingly relevant due to the recognition of architectural heritage as a key factor for cultural and economic development.

Design/methodology/approach

In Portugal, as elsewhere in Europe, cultural heritage management has often been associated with the creation of new museum spaces, namely, within national monuments and archaeological sites. Drawing on restoration theories and international charters, this paper analyses and compares two parallel interventions recently built inside São Jorge Castle, in Lisbon: the Museum Centre (Victor Mestre and Sofia Aleixo, 2007-2008) and the Archaeological Site (João Luís Carrilho da Graça, 2008-2010). This approach offers insight on the complexity of addressing and reconfiguring the profusion of past transformations within a single monument.

Findings

These two complementary museum spaces are representative of different attitudes towards heritage appropriation, substantiating the thesis that musealizing always entails the creation of narratives, which translate history and heritage into architectural and curatorial discourses. Besides meeting the functional requirements of specific museum programmes, such interventions frequently deal with the challenge of opening up new perspectives on the past.

Originality/value

Considering the central role of communication in contemporary museums, this paper discusses how heritage musealization can contribute to the translation of historical evidence into updated iconographies, narratives and dialogues. Furthermore, the unique characteristics of this twofold case study can provide an insightful contribution for a broader debate on the reinterpretation of iconic monuments and sites.

Details

Journal of Cultural Heritage Management and Sustainable Development, vol. 7 no. 1
Type: Research Article
ISSN: 2044-1266

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Article
Publication date: 16 October 2024

Monica Carlsson

This paper explores perspectives on social justice, equity and agency when schools address health, wellbeing and sustainability challenges.

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Abstract

Purpose

This paper explores perspectives on social justice, equity and agency when schools address health, wellbeing and sustainability challenges.

Design/methodology/approach

The paper draws on a literature review of educational research. The analysis is narrative, highlighting how binary conceptions of equity, social justice and agency are explicitly or implicitly evident in the studies included in the review, distinguishing between as well as noting the interplay between the different conceptions.

Findings

Perspectives on social justice and equity are emphasizing the need to address (1) a more equal sharing of resources in education, (2) dominance in education, and (3) community/ies and education as a common good. Perspectives on agency are framed as situated (1) between people (2) between people and structures or social contexts, and (3) between people and nature or the more-than-human. The paper furthermore highlights tendencies and experiences regarding the possibility of addressing these perspectives in different forms of educational practices.

Research limitations/implications

A potential limitation in this review is that 17 out of the 23 included studies are by authors with an Anglo-Saxon background, while a further 3 have a European background. As such, the review mainly represents “Western” perspectives on social justice, equity and agency.

Originality/value

The findings in the paper indicate that despite the fact that social justice, equity and agency are concepts that have been discussed in educational research for a very long time, they cannot be seen as taken-for-granted concepts, and that the research contains a diverse range of perspectives on these concepts — also within research authored by researchers with an Anglo-Saxon or European background.

Details

Health Education, vol. 124 no. 3/4
Type: Research Article
ISSN: 0965-4283

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Article
Publication date: 2 May 2024

Fabiola Gómez-Jorge and Eloísa Díaz-Garrido

Organizations increasingly promote the health and well-being of their employees. There is a growing need for organizations to develop a long-term humanistic approach towards their…

200

Abstract

Purpose

Organizations increasingly promote the health and well-being of their employees. There is a growing need for organizations to develop a long-term humanistic approach towards their workforce. This study aims to examine how self-esteem influences the organization, the employee and society within the context of higher education institutions.

Design/methodology/approach

The research has been carried out among the teaching and research staff of a higher education institution in Spain. For this, a structured questionnaire was used. Data analysis was conducted using 272 valid questionnaires. A linear regression analysis was used to examine the relationship between self-esteem and the variables of the model.

Findings

We identified a positive correlation between self-esteem and productivity, job satisfaction and altruism, where significant differences were observed according to gender, age, seniority and professional category of the teaching staff. The results revealed that teachers with high self-esteem are more productive, satisfied and participate in more altruistic activities than their counterparts with low self-esteem.

Originality/value

This study reveals the importance that worker self-esteem has on their behavior in the work environment and in society as a whole, to improve the overall results of the organization. We identified self-esteem as an attribute that improves productivity, job satisfaction and altruism, that can be used to reduce job turnover intention and improve job retention levels, positively affecting the organization. We also contribute to the achievement of some Sustainable Development Goals. This study offers a theoretical contribution by extending the application of social learning theory to the context of self-esteem within higher education institutions.

Details

Management Decision, vol. 62 no. 10
Type: Research Article
ISSN: 0025-1747

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