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Article
Publication date: 12 October 2010

M.E. Díaz‐Fernández, C. González‐Nicieza, M.I. Álvarez‐Fernández, A.E. Álvarez‐Vigil and A. Argüelles Amado

This paper aims to present a computational approach which – setting off from measures obtained by using an overdrilling method – determines, automatically and accurately, stress…

261

Abstract

Purpose

This paper aims to present a computational approach which – setting off from measures obtained by using an overdrilling method – determines, automatically and accurately, stress changes undergone in terrain as a consequence of human activity.

Design/methodology/approach

The method presented uses the data from three boreholes and the elasticity theory to represent a numerical system whose resolution allows determining the stress state in a particular point. Since the system obtained is over‐dimensioned, the Levenberg‐Marquardt minimization method has been used in order to minimize errors. This paper details the analysis carried out in order to develop the computational method.

Findings

This paper provides the algorithm for determining inner stresses in a particular point of a rock mass. Besides, a method to verify obtained results is presented, including its computational encoding in C#. Furthermore, the developed methods have been integrated in a computer tool which presents the results in a graphic environment.

Research limitations/implications

The algorithms presented are applicable when using an overdrilling method to measure stresses.

Practical implications

A reliable determination of global stress state demands the use of any method that is numerically difficult to use. Thus, in practice, it is of great importance to dispose of some reliable automatic tool to calculate stress state.

Originality/value

Accuracy in the results obtained with the tool, together with the simplicity of its interface, involves a certain advantage regarding the use of a general‐scope commercial tool, since it allows – without being necessary to be an expert user – quickly obtaining results within the analysed working area.

Details

Engineering Computations, vol. 27 no. 7
Type: Research Article
ISSN: 0264-4401

Keywords

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Book part
Publication date: 12 September 2017

Soraya Hidalgo-Gallego, Valeriano Martínez-San Román and Ramón Núñez-Sánchez

In this chapter, we estimate the allocative efficiency of Spanish airports in the pre-privatization period from 2009 until 2014. The estimation of an input-oriented distance…

Abstract

In this chapter, we estimate the allocative efficiency of Spanish airports in the pre-privatization period from 2009 until 2014. The estimation of an input-oriented distance system of equations allows us to calculate different allocative efficiency measures using two approaches. The results show that allocative inefficiencies exist for Spanish airports during this period. Moreover, in breaking down allocative efficiency changes by periods coinciding with different government strategies of privatization, we find important differences. In the initial period, when the government encouraged decentralized management of airports and privatization of the largest airports, allocative efficiency improved (from 2009 to 2012). In the second period, however, when the government focused on centralized airport management and privatization of the system as a whole (from 2012 to 2014), inefficiencies slightly increased again.

Details

The Economics of Airport Operations
Type: Book
ISBN: 978-1-78714-497-2

Keywords

Available. Open Access. Open Access
Article
Publication date: 16 July 2024

Patrícia Leão, Mariana Rei and Sara Rodrigues

This paper aims to carry out a systematic review based on the preferred reporting items for systematic reviews and meta-analyses (PRISMA) guidelines to assess the adherence to the…

280

Abstract

Purpose

This paper aims to carry out a systematic review based on the preferred reporting items for systematic reviews and meta-analyses (PRISMA) guidelines to assess the adherence to the Mediterranean dietary pattern (MDP) in workers.

Design/methodology/approach

Three electronic databases were searched up to March 2022. The population was restricted to adults, workers in any professional area, without special diets and no specific health conditions. Their adherence to the MDP was assessed by any a priori method/instrument. Two reviewers independently applied the eligibility criteria and performed the data extraction from each study included. In case of disagreement, a third reviewer was consulted.

Findings

Of the 590 studies found, 46 were included. Most of the studies were carried out in Europe, between the years 2019 and 2022 and were cross-sectional studies. The minimum sample size was 38, and the maximum was 1,74,638 participants. Most studies included both males and females; six included only females and nine only males. The three most prevalent types of workers under study were health professionals, factory workers and firefighters. The most used method for assessing adherence to the MDP was the Mediterranean diet score. Overall, workers showed low or moderate adherence to the MDP.

Originality/value

This systematic review conducted to assess the adherence to the MDP in workers displays an urgent need to improve diet quality in the workplaces.

Details

Nutrition & Food Science , vol. 54 no. 6
Type: Research Article
ISSN: 0034-6659

Keywords

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Article
Publication date: 8 December 2020

Sohni Siddiqui, Anjum Bano Kazmi and Zahid Ahmed

Aggression is an undesirable behavior that assaults traditions norms, morals and standards of ethics practiced in society. To address the scarceness of identification tools and…

129

Abstract

Purpose

Aggression is an undesirable behavior that assaults traditions norms, morals and standards of ethics practiced in society. To address the scarceness of identification tools and for evidence-based interventions in Pakistan, the purpose of this study is to determine the extent to which aggression is prevalent in Pakistan’s people by newly developed self-reported questionnaires in the Urdu language designed after reviewing the cultural and social perspectives of the society.

Design/methodology/approach

The research design was based on principles of scale development followed by exploratory and confirmatory factor analysis. A subject matter expert panel technique was adopted where educationists from diversified backgrounds helped to generate items and to establish content validity.

Findings

The three-factor construct has been supported by factor analysis. These analyzes identified aggression measures in terms of direct aggression, displaced aggression and indirect aggression. The model has established inner consistency, reliability and validity. Furthermore, the impact of age and gender on different forms of aggression was explored and discussed.

Originality/value

Aggression is a distinctive trait of many psychiatric disturbances. To undertake the dearth of identification tools and for evidence-based interventions in Pakistan, it was necessary to develop a tool for identification to address aggression issues among common people. This research is devised to develop a self-reported questionnaire in the Urdu language keeping cultural and social perspectives of society.

Details

Journal of Aggression, Conflict and Peace Research, vol. 13 no. 1
Type: Research Article
ISSN: 1759-6599

Keywords

Available. Open Access. Open Access
Article
Publication date: 10 July 2024

Nermeen Bahnasy

This study aims to propose a comprehensive conceptual framework for the characterization of agricultural heritage in desert-prone areas, with a focus on Siwa Oasis in Egypt.

300

Abstract

Purpose

This study aims to propose a comprehensive conceptual framework for the characterization of agricultural heritage in desert-prone areas, with a focus on Siwa Oasis in Egypt.

Design/methodology/approach

The research utilizes a multidimensional approach, integrating perspectives from sustainability principles, stakeholders and the agricultural heritage frameworks of the United Nations Educational, Scientific and Cultural Organization (UNESCO) and Food and Agricultural Organization (FAO). It involves thematic analysis of qualitative data collected through focus group discussions and interviews with a diverse range of participants, including community members, government officials, nongovernmental organizations (NGOs) and researchers.

Findings

The study identifies five key elements of agricultural heritage in Siwa Oasis: cultural, ecological, economic, social and scientific. Cultural elements include traditional farming practices, irrigation systems and architectural features, while ecological elements encompass crop biodiversity, wildlife habitats and traditional landraces. Economically, date palm cultivation, olive production and agritourism activities play crucial roles in livelihood security and local economies. Socially, community cohesion, gender roles and cultural practices shape the social fabric of the oasis, with festivals and rituals fostering a sense of belonging. From a scientific perspective, the integration of traditional knowledge with modern agricultural practices enhances sustainability and resilience.

Research limitations/implications

The study focused solely on Siwa Oasis as a case study, limiting generalizability to other desert-prone areas. Further research could explore additional regions to enhance the understanding of agricultural heritage in diverse contexts. Additionally, the qualitative nature of the study may limit statistical analysis. Future studies could employ mixed-methods approaches for a more comprehensive understanding of agricultural heritage dynamics.

Practical implications

Understanding the multifaceted aspects of agricultural heritage in Siwa Oasis can inform sustainable development initiatives, tourism planning and cultural preservation efforts. Local policymakers and stakeholders can utilize these insights to develop policies that support traditional farming practices, ecotourism and community development. Furthermore, the promotion of agricultural heritage can enhance economic opportunities, food security and environmental sustainability in desert-prone regions.

Social implications

Recognition of the social elements embedded within Siwa Oasis’s agricultural heritage highlights the importance of community cohesion, gender roles and cultural practices. By acknowledging and preserving these aspects, initiatives can be developed to empower local communities, promote gender equality and preserve cultural identity. Such efforts can enhance social cohesion, strengthen cultural bonds and promote inclusivity in the development agenda of desert-prone areas.

Originality/value

This study contributes a novel conceptual framework that bridges multifunctionality concepts, sustainability principles and stakeholder perspectives to characterize agricultural heritage in desert-prone areas. It offers insights into the complex interplay of cultural, ecological, economic, social and scientific dimensions of agricultural heritage systems.

Details

Journal of Humanities and Applied Social Sciences, vol. ahead-of-print no. ahead-of-print
Type: Research Article
ISSN: 2632-279X

Keywords

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