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1 – 10 of 663
Article
Publication date: 1 September 1999

W. Rieger, A. Buchau, M. Haas, C. Huber, G. Lehner and W.M. Rucker

This paper deals with the inverse scattering problem of reconstructing the material properties of perfectly conducting or dielectric cylindrical objects. The material properties…

Abstract

This paper deals with the inverse scattering problem of reconstructing the material properties of perfectly conducting or dielectric cylindrical objects. The material properties are reconstructed from measured far‐field scattering data provided by the Electromagnetics Technology Division, AFRL/SNH, 31 Grenier Street, Hanscom AFB, MA 01731‐3010. The measured data have to be calibrated for use in our reconstruction algorithm. The inverse scattering problem formulated as unconstrained nonlinear optimization problem is numerically solved using an iterative scheme with a variable calibration factor which will be determined during the optimization process. Numerical examples show the successful application of the method to the measured data.

Details

COMPEL - The international journal for computation and mathematics in electrical and electronic engineering, vol. 18 no. 3
Type: Research Article
ISSN: 0332-1649

Keywords

Article
Publication date: 1 April 1991

Barbara A. Misztal

Emergencies commonly reveal the disorder from which routine order is painfully extracted. They dramatise social fissures, inconsistencies and ignorance that ordinarily remain…

204

Abstract

Emergencies commonly reveal the disorder from which routine order is painfully extracted. They dramatise social fissures, inconsistencies and ignorance that ordinarily remain hidden or can be ignored without damage or controversy. They transform the taken‐for‐granted into the up‐for‐discussion, compel the formation of decisions and accompanying justifications, and demand action of a special and urgent kind. Using Unger (1988) terminology, we can say that emergencies might reduce fixed distance between context and routines, thus they can be perceived as “context‐revising” situations, providing possibilities for lifting “a powerful constraint over all social practices, forcing them into a specific mould of predictable routines” (Unger 1988, p. 125). AIDS (an acronym formally designating the most developed stage of HIV infection but misleadingly used in our lexicon of public concern to stand for the disease as a whole), is such an emergency, not only due to the extent of the spread of the disease, but because this epidemic presents so many difficult ethical, legal and technical issues, and because of growing and changing knowledge about the disease, it requires continuous rethinking of strategies and adopting them to new discoveries.

Details

International Journal of Sociology and Social Policy, vol. 11 no. 4
Type: Research Article
ISSN: 0144-333X

Article
Publication date: 6 March 2009

Jerzy Gołębiowski and Marek Zaręba

The purpose of this paper is to present a method of solving a thermal conduction equation in three‐zone axially‐symmetrical systems.

Abstract

Purpose

The purpose of this paper is to present a method of solving a thermal conduction equation in three‐zone axially‐symmetrical systems.

Design/methodology/approach

In the method developed, the field functions are determined in the analytical way by the superposition of states and separation of variables method. The coefficients of the field functions and eigenvalues of the boundary‐initial problem are computed by the numerical method. The coefficients are the solution to the corresponding sets of equations. These sets are the result of scalar products of non‐orthogonal functions at the respective zones of the cable. The eigenvalues are determined by an algorithm, which uses the field properties and elements of the golden cut method.

Findings

The method made it possible to develop a mathematical model of the dynamics of the thermal field in a polymer DC cable. This model has good physical interpretation. The paper also presents the field distributions determined in an analytical form. Some arguments of the expressions derived are however computed numerically. The results obtained by the paper's method and by the finite elements methods were compared. The relative differences are less than 6 per cent.

Research limitations/implications

The method concerns axially‐symmetrical three‐zone systems under nominal conditions.

Practical implications

By means of the method important parameters of DC lines can be determined (e.g. spatial‐temporal heat‐up curves, admissible sustained currents, time constants).

Originality/value

An analytical‐numerical method of analysis of the thermal field in a three‐zone axially‐symmetrical system was developed. Its original element is the algorithm of determination of eigenvalues of the boundary‐initial problem and coefficients of non‐orthogonal field functions.

Details

COMPEL - The international journal for computation and mathematics in electrical and electronic engineering, vol. 28 no. 2
Type: Research Article
ISSN: 0332-1649

Keywords

Open Access
Article
Publication date: 20 August 2021

Soniya Billore, Tomio Kobayashi and Ou Wang

The purpose is to explore consumer acceptance of the doggy bag as an intervention to promote sustainable food consumption. In particular, it explores consumer attitudes towards…

4220

Abstract

Purpose

The purpose is to explore consumer acceptance of the doggy bag as an intervention to promote sustainable food consumption. In particular, it explores consumer attitudes towards taking home the leftover food from eating out at restaurants as a way of sustainable consumption.

Design/methodology/approach

A consumer survey to explore consumer attitudes, followed by an investigation of the media communications that promote the doggy bag as a tool to reduce food wastage.

Findings

Strategic communication was employed in an inclusive approach to increase the impact of the doggy bag on consumer behaviour. Consumers show a positive inclination towards using the doggy bag to take home the leftovers of their restaurant meals and reduce food wastage. Cultural biases can cause hurdles in the acceptance of the tool.

Originality/value

To the best of the author's knowledge, this is the first study to approach the behavioural analysis of leftover food takeout interventions studied from the consumer perspective. Furthermore, it is based on a novel approach of experimental methods at ready-to-eat food outlets for communicating with consumers.

Details

British Food Journal, vol. 123 no. 9
Type: Research Article
ISSN: 0007-070X

Keywords

Article
Publication date: 6 June 2022

Marie-Julie De Bruyne and Katrien Verleye

Today's sharing economy covers a variety of business models. This research aims to (1) identify dimensions along which sharing businesses may vary and (2) investigate how these…

2022

Abstract

Purpose

Today's sharing economy covers a variety of business models. This research aims to (1) identify dimensions along which sharing businesses may vary and (2) investigate how these dimensions influence consumer engagement while considering consumers' sustainability orientation.

Design/methodology/approach

This research relies upon a systematic literature review (n = 67 articles) to identify five sharing business dimensions: (1) ownership transfer, (2) professional involvement, (3) compensation, (4) digitalization and (5) community scope. A discrete choice conjoint experiment in the fashion industry is employed to investigate how these dimensions affect consumer engagement with sharing businesses (n = 383 participants).

Findings

The results suggest that ownership of tangible resources elicits more engagement than access to tangible resources for both consumers with a low sustainability orientation and consumers with a high sustainability orientation. Community scope also affects consumer engagement as reflected in more engagement towards sharing businesses with a local rather than a global scope. The presence of professional service providers, monetary compensation and a digital platform only induces engagement among consumers with a low sustainability orientation.

Originality/value

This research generates a better understanding of how sharing businesses can draw on business dimensions to engage consumers with different levels of sustainability orientation and, in turn, how sharing businesses can realize their economic and/or circular potential.

Details

Journal of Service Management, vol. 34 no. 3
Type: Research Article
ISSN: 1757-5818

Keywords

Article
Publication date: 7 September 2015

Malgorzata Cwikla and Beata Jalocha

The purpose of this paper is to show the potential of cultural projects which could become a source of inspiration in terms of refreshing and adjusting traditional project…

3105

Abstract

Purpose

The purpose of this paper is to show the potential of cultural projects which could become a source of inspiration in terms of refreshing and adjusting traditional project management to modern times and making it more flexible. However, as research indicates, this potential is limited by cultural policies forcing artists and cultural managers to implement project-related techniques which have been already identified as inefficient and faulty in the progressive discourses on project management, mainly in the for-profit area.

Design/methodology/approach

The analysis is based on three case studies of Polish and Polish-German theatrical co-productions. The research was conducted in Poland and Germany in 2012-2014. It involved 21 individual in-depth interviews with artists, managers and administrative staff working on projects as well as an analysis of project documentation.

Findings

It has been found that project management could draw a lot of inspiration from cultural projects in terms of, e.g. the processual nature of activities, motivating project teams and inclusive leadership. Based on the research, the authors also argue that it is worth considering spectators/other stakeholders as part of project teams, which will help build a non-oppressive social mechanism of control.

Originality/value

Advantages of replacing the just-in-time approach to project management with the work-in-progress approach; increased motivation and commitment of project teams to their work; building a unique team spirit; inclusive leadership based on passion.

Details

International Journal of Managing Projects in Business, vol. 8 no. 4
Type: Research Article
ISSN: 1753-8378

Keywords

Article
Publication date: 8 January 2018

Sheila Corrall

The research explores the emerging specialty of learning space assessment with a focus on how new information professionals represented by graduate students in an academic…

1056

Abstract

Purpose

The research explores the emerging specialty of learning space assessment with a focus on how new information professionals represented by graduate students in an academic libraries course defined quality criteria for library spaces and how they approached designing and conducting a one-shot multi-site space assessment project.

Design/methodology/approach

The instructor-investigator adopted a diachronic collective case study strategy, using documents generated by six cohorts over three academic years. The data included 180 online discussion posts, 97 individual site assessments and 32 group project reports. Data were analysed quantitatively and qualitatively to identify patterns and trends in student behaviour.

Findings

The analysis revealed a strong trend among students for creating their own evaluation frameworks in preference to reusing existing professional tools in their current form; the proportion of students who developed their own criteria or combined existing criteria in new ways shifted from 40 per cent to 80 per cent in three years. Their approaches demonstrated willingness and ability to engage in independent and creative thinking, and readiness to explore interdisciplinary and international perspectives on space. They also displayed a commitment to accessible, flexible and adaptable user-centred design for active, collaborative learning and to bringing a user perspective to their observations.

Originality/value

The focus on student-librarians provides a unique forward-looking perspective on the desirable qualities of next-generation learning spaces in academic libraries. The study documents an unprecedented range of established and novel space evaluation frameworks and tools informed by different professional disciplines. The results should be of interest to library and information science (LIS) educators and practitioners.

Details

Information and Learning Science, vol. 119 no. 1/2
Type: Research Article
ISSN: 2398-5348

Keywords

Article
Publication date: 1 June 1960

Members will have heard with regret of the death, on Friday 6th May, of Miss Irene Shrigley, MA, who had been actively associated with Aslib for the past eighteen years. The…

Abstract

Members will have heard with regret of the death, on Friday 6th May, of Miss Irene Shrigley, MA, who had been actively associated with Aslib for the past eighteen years. The following tribute is sent by Mrs Stowell, Chairman of the Economics Group, and a close personal friend of the late Miss Shrigley:

Details

Aslib Proceedings, vol. 12 no. 6
Type: Research Article
ISSN: 0001-253X

Article
Publication date: 1 September 1999

Jussi Kaisjoki, Kimmo Forsman, Aapo Koski and Lauri Kettunen

In this paper, a hybrid formulation for solving time harmonic eddy current problems in terms of magnetic field h is considered. In particular, we discuss some properties of the…

Abstract

In this paper, a hybrid formulation for solving time harmonic eddy current problems in terms of magnetic field h is considered. In particular, we discuss some properties of the implicit boundary condition on the discrete level and the computation of the integral operator exploited in this context. An iterative technique is confirmed to be efficient in solving the arising, partly dense, complex linear system of equations. Furthermore, some test results, including timings for linear solvers are presented.

Details

COMPEL - The international journal for computation and mathematics in electrical and electronic engineering, vol. 18 no. 3
Type: Research Article
ISSN: 0332-1649

Keywords

Book part
Publication date: 18 November 2024

Maryam Khodayari, Morteza Akbari and Pantea Foroudi

The factors involved in and obstacles to sharing economy adoption have been studied with several methods, and several models have occurred to clarify the underlying procedure of…

Abstract

The factors involved in and obstacles to sharing economy adoption have been studied with several methods, and several models have occurred to clarify the underlying procedure of sharing economy (SE) adoption, which provide contradictory and scattered findings. This chapter seeks to offer a scientific outline of the academic structure of the SE adoption domain.

Details

Business Strategies and Ethical Challenges in the Digital Ecosystem
Type: Book
ISBN: 978-1-80455-069-4

Keywords

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