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Article
Publication date: 23 October 2019

Ibtissam El Housni, Samira Idrissi, Najlae El Mekkaoui, Sara Mtougui, Rajaa Khalladi, Hicham Labrim, Soumia Ziti and Lahoucine Bahmad

The purpose of this paper is to investigate the magnetic properties and the ground state phase diagrams of the double perovskite La2NiMnO6 using the Monte Carlo simulations (MCS).

Abstract

Purpose

The purpose of this paper is to investigate the magnetic properties and the ground state phase diagrams of the double perovskite La2NiMnO6 using the Monte Carlo simulations (MCS).

Design/methodology/approach

In this work, the authors propose a Hamiltonian modeling this compound, described by an Ising model, with different exchange coupling interactions J11, J12 and J22 between the only magnetic atoms Ni and Mn.

Findings

Starting with the ground state phase diagrams, the authors present and discuss the stable configurations in different physical parameter planes. On the other hand, the authors present the investigation of the magnetic properties and the magnetization behaviors of the magnetic susceptibilities, as a function of temperature, crystal field, the exchange coupling interactions and the Zeeman energy. To complete this study, the authors illustrate the dependency of the total magnetizations for the hysteresis loops of the double perovskite La2NiMnO6 compound. This study is done for fixed values of temperature, the exchange coupling interactions and crystal field.

Originality/value

The authors modeled the different physical parameters of the double perovskite La2NiMnO with a Hamiltonian describing the system. At T=0K, the authors discussed the ground state phase diagrams of different physical parameters planes. For non-null temperature values, the authors studied the magnetic behavior of the double perovskite La2NiMnO using MCS under the metropolis algorithm. The authors expect that the results of these simulations can provide some important keys for the experimental research and technology applications of the double perovskite La2NiMnO6 in the future.

Details

Multidiscipline Modeling in Materials and Structures, vol. 16 no. 2
Type: Research Article
ISSN: 1573-6105

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Article
Publication date: 1 June 1997

Jaroslav Mackerle

Gives a bibliographical review of the finite element methods (FEMs) applied for the linear and nonlinear, static and dynamic analyses of basic structural elements from the…

Abstract

Gives a bibliographical review of the finite element methods (FEMs) applied for the linear and nonlinear, static and dynamic analyses of basic structural elements from the theoretical as well as practical points of view. The range of applications of FEMs in this area is wide and cannot be presented in a single paper; therefore aims to give the reader an encyclopaedic view on the subject. The bibliography at the end of the paper contains 2,025 references to papers, conference proceedings and theses/dissertations dealing with the analysis of beams, columns, rods, bars, cables, discs, blades, shafts, membranes, plates and shells that were published in 1992‐1995.

Details

Engineering Computations, vol. 14 no. 4
Type: Research Article
ISSN: 0264-4401

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Article
Publication date: 14 July 2017

Johan Alvehus

By drawing on a detailed case study of the work of tax consultants, the purpose of this paper is to develop a more detailed understanding of the role of ambiguity in…

Abstract

Purpose

By drawing on a detailed case study of the work of tax consultants, the purpose of this paper is to develop a more detailed understanding of the role of ambiguity in professional work, and its relationship to the division of labour in professional service firms (PSFs).

Design/methodology/approach

The paper is based on a three-year, longitudinal interpretive case study comprising 42 interviews, supplemented by observations and document data.

Findings

The research determines that processes of “obfuscation” and “privatisation” separate client work from case work. This maintains a division of labour between junior and senior professionals, which in turn facilitates financial leverage. The findings indicate that a more nuanced view on the role and origins of ambiguity is needed; particularly the role ambiguity plays in the division of labour. While inherent in professional work, ambiguity is also an effect of the way work processes are organised in order to obtain leverage.

Research limitations/implications

The research is based on a case study. Therefore, the paper explores its topic in empirical detail, but at the same time calls for exploring the topic in different contexts. The paper encourages further research on the role ambiguity plays being constituted by structural arrangements, and on the way the core of professionalism is inverted by the division of labour. The paper highlights the value of detailed empirical approaches for understanding professional work.

Practical implications

The paper draws attention to the way ambiguity becomes a part in sustaining a division of labour among professional workers, and to the importance of this in maintaining financial leverage as well as in creating a precarious work situation for junior professionals.

Social implications

The paper raises concerns about the way professional work is legitimated in society as opposed to how it is constructed in PSFs.

Originality/value

The paper challenges prevalent notions of professional work as ambiguous, offering instead a way of engaging with professional work processes in detail, theoretically and methodologically. Traditional assumptions about the division of labour and the “core” of professional work are problematized, and traditional assumptions about ambiguity as a cause of specific structural arrangements are questioned.

Details

Baltic Journal of Management, vol. 12 no. 4
Type: Research Article
ISSN: 1746-5265

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Article
Publication date: 17 July 2009

Hamidreza Arabshahi and Vahid Lotfi

The purpose of this paper is to obtain an insight into the effects of sliding and/or joint opening at the contraction, perimeter and concrete lift joints on the nonlinear…

Abstract

Purpose

The purpose of this paper is to obtain an insight into the effects of sliding and/or joint opening at the contraction, perimeter and concrete lift joints on the nonlinear seismic response of arch dams.

Design/methodology/approach

The seismic behavior of a typical thin double curvature arch dam is studied by a nonlinear finite element program developed by the authors. Joints are modeled with the use of zero thickness interface elements. Various constitutive relationships are implemented to account for sliding and opening along the joints. Effects of joint sliding parameters and foundation rock flexibility are also considered in the analyses.

Findings

The findings provide information about dynamic stress distribution through the dam body and stability of the dam as a whole and also the local stability of the most critical concrete blocks in the dam body.

Practical implications

Useful information for designing new arch dams or seismic evaluation of constructed dams.

Originality/value

This paper takes into account the stability of concrete blocks in the dam body as well as stability of the structure as a whole. Except for contraction joints, perimeter and concrete lift joints are also modeled. Practical as well as detailed models of sliding are provided for the analyses. The paper offers practical help to design and dam engineers.

Details

Engineering Computations, vol. 26 no. 5
Type: Research Article
ISSN: 0264-4401

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Article
Publication date: 31 December 2003

Jeanne K. Nel

Considers how the rights of children, protected under the Constitution of the Republic of South Africa and its Bill of Rights, can be reconciled with the effects of heavy…

Abstract

Considers how the rights of children, protected under the Constitution of the Republic of South Africa and its Bill of Rights, can be reconciled with the effects of heavy fines, asset forfeiture and confiscation orders on economic offenders. Clarifies the concepts of forfeiture and confiscation. Outlines the 1998 Prevention of Organised Crime Act (POCA) and considers its provisions in relation to the position of children and young people as innocent third parties in cases of civil and criminal asset forfeiture. Includes a short discussion of corresponding provisions in US law. Suggests that, as legislation currently does not specifically provide for children, the POCA should be amended by incorporating, mutatis mutandis, provisions from the Mediation in Certain Divorce Matters Act.

Details

Journal of Financial Crime, vol. 11 no. 2
Type: Research Article
ISSN: 1359-0790

Keywords

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Abstract

Details

Quantitative and Empirical Analysis of Nonlinear Dynamic Macromodels
Type: Book
ISBN: 978-0-44452-122-4

Abstract

Details

Quantitative and Empirical Analysis of Nonlinear Dynamic Macromodels
Type: Book
ISBN: 978-0-44452-122-4

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Article
Publication date: 1 January 1991

Nicholas Sarantis

The aim is to integrate the dynamics of asset accumulation for openeconomies with the conflict theory of wage and price formation. Thissynthesis allows us to assess the…

Abstract

The aim is to integrate the dynamics of asset accumulation for open economies with the conflict theory of wage and price formation. This synthesis allows us to assess the results obtained in the mainstream asset market models based on an atomistic view of the economy, analyse the influence of market power in product and labour markets on aggregate economic activity, and to investigate new sources of potential instability.

Details

Journal of Economic Studies, vol. 18 no. 1
Type: Research Article
ISSN: 0144-3585

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Article
Publication date: 1 January 1977

DEREK J. RICHARDS

In order to survive, the actions of a purposeful system must be governed in such a way that its more prepotent needs are satisfied. A purposeful system's actions are…

Abstract

In order to survive, the actions of a purposeful system must be governed in such a way that its more prepotent needs are satisfied. A purposeful system's actions are largely governed by its representation of its world, and hence if it has an inappropriate representation it will not survive. Our premise is that intelligence is a property only reasonably attributable to purposeful systems which compute a representation of their world. Using this premise, we consider cognition to be the continual process of computing/recomputing representations and argue that it implies forms of computation, described in this paper, which make distinctions.

Details

Kybernetes, vol. 6 no. 1
Type: Research Article
ISSN: 0368-492X

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Article
Publication date: 7 May 2021

Nusrat Jafrin, Masnun Mahi, Muhammad Mehedi Masud and Deboshree Ghosh

The study attempts to establish the relationship between demographic dividend and GDP growth rate by utilising panel data from 1990 to 2017 in Bangladesh, India, Pakistan…

Abstract

Purpose

The study attempts to establish the relationship between demographic dividend and GDP growth rate by utilising panel data from 1990 to 2017 in Bangladesh, India, Pakistan, Nepal and Sri Lanka.

Design/methodology/approach

This study employs the pooled OLS model, using data from the World Bank's database for the period 1990–2017 for five selected South Asia Association for Regional Cooperation (SAARC) countries.

Findings

The results reveal that demographic dividend affects economic growth in Bangladesh, India, Nepal, Sri Lanka and Pakistan, thereby supporting the demographic dividend hypothesis. For the country-specific analysis, it was also observed that demographic dividend impacts the economic growth of the five SAARC countries. In addition, growth of gross capital formation is highly significant for both aggregated and country-specific analyses. However, economic growth is unaffected by trade openness and unemployment rates. Moreover, the rate of labour force participation is negatively related to the GDP growth rate in the aggregated model.

Originality/value

This paper bestows insight into the fact that the impact of demographic dividend on the economic growth of the SAARC regions cannot be fully actualised if the workforce are underutilised. This region needs to adopt appropriate policies to strengthen the considerable benefits of demographic dividend on the economic growth.

Details

International Journal of Social Economics, vol. 48 no. 8
Type: Research Article
ISSN: 0306-8293

Keywords

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