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Article
Publication date: 1 June 2001

C. Völlinger, M. Aleksa and S. Russenschuck

Field variations in the LHC superconducting magnets, e.g.during the ramping of the magnets, induce magnetization currents in the superconducting material, the so‐called persistent…

274

Abstract

Field variations in the LHC superconducting magnets, e.g.during the ramping of the magnets, induce magnetization currents in the superconducting material, the so‐called persistent currents that do not decay but persist due to the lack of resistivity. This paper describes a semi‐analytical hysteresis model for hard superconductors, which has been developed for the computation of the total field errors arising from persistent currents. Since the superconducting coil is surrounded by a ferromagnetic yoke structure, the persistent current model is combined with the finite element method (FEM), as the non‐linear yoke can only be calculated numerically. The used finite element method is based on a reduced vector potential formulation that avoids the meshing of the coil while calculating the part of the field arising from the source currents by means of the Biot‐Savart Law. The combination allows the determination of persistent current induced field errors as a function of the excitation and for arbitrarily shaped iron yokes. The model has been implemented into the ROXIE program and is tested using the LHC dipole magnet as an example.

Details

COMPEL - The international journal for computation and mathematics in electrical and electronic engineering, vol. 20 no. 2
Type: Research Article
ISSN: 0332-1649

Keywords

Available. Open Access. Open Access
Article
Publication date: 4 June 2021

Radu Atanasiu

This paper proposes a theory-based process model for the generation, articulation, sharing and application of managerial heuristics, from their origin as unspoken insight, to…

1814

Abstract

Purpose

This paper proposes a theory-based process model for the generation, articulation, sharing and application of managerial heuristics, from their origin as unspoken insight, to proverbialization, to formal or informal sharing, and to their adoption as optional guidelines or policy.

Design/methodology/approach

A conceptual paper is built using systematic and non-systematic review of literature. This paper employs a three-step approach to propose a process model for the emergence of managerial heuristics. Step one uses a systematic review of empirical studies on heuristics in order to map extant research on four key criteria and to obtain, by flicking through this sample in a moving-pictures style, the static stages of the process; step two adapts a knowledge management framework to yield the dynamic aspect; step three assembles these findings into a graphical process model and uses insights from literature to enrich its description and to synthesize four propositions.

Findings

The paper provides insights into how heuristics originate from experienced managers confronted with negative situations and are firstly expressed as an inequality with a threshold. Further articulation is done by proverbialization, refining and adapting. Sharing is done either in an informal way, through socialization, or in a formal way, through regular meetings. Soft adoption as guidelines is based on expert authority, while hard adoption as policy is based on hierarchical authority or on collective authority.

Research limitations/implications

The findings are theory-based, and the model must be empirically refined.

Practical implications

Practical advice for managers on how to develop and share their portfolio of heuristics makes this paper valuable for practitioners.

Originality/value

This study addresses the less-researched aspect of heuristics creation, transforms static insights from literature into a dynamic process model, and, in a blended-theory approach, considers insights from a distant, but relevant literature – paremiology (the science of proverbs).

Details

Management Decision, vol. 59 no. 7
Type: Research Article
ISSN: 0025-1747

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Article
Publication date: 25 October 2021

Dragan Stojković, Aleksa Dokić, Bozidar Vlacic and Susana Costa e Silva

Newly established intersections between offline and online channels create room for enhancing inter-channel synergies. The nature and structure of emerging markets only further…

433

Abstract

Purpose

Newly established intersections between offline and online channels create room for enhancing inter-channel synergies. The nature and structure of emerging markets only further emphasize the need to expand existing knowledge. Consequently, this study investigates inter-channel synergy creation during offline–online retail integration in emerging markets.

Design/methodology/approach

Data collected from 97 companies in Serbia that incorporated online channels into their offline retailing businesses were analyzed using the structural equation modeling method.

Findings

The results show that retailers who have undergone click-to-brick integration in the emerging markets struggle to leverage physical presence for inter-channel synergy creation through digital channels. Essentially, retailers integrating clicks into bricks in emerging markets are less likely to achieve immediate omni-channel synergy, resorting to a multi-iterative transition process.

Originality/value

This research synthesizes knowledge on inter-channel synergy creation in an omni-channel context, as well as existing findings regarding inter-channel integration. This paper presents the first comprehensive study on inter-channel synergy creation during click-to-brick integration in emerging retail markets. Moreover, this study outlines challenges facing retailers seeking channel synergy during click-to-brick integration. The study results have theoretical and practical implications regarding inter-channel synergy creation in the multi-channel environment of emerging markets.

Details

International Journal of Emerging Markets, vol. 18 no. 9
Type: Research Article
ISSN: 1746-8809

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Article
Publication date: 12 February 2018

Aleksa Š. Vučetić

This paper aims to determine to what extent there is a difference in employees’ perception of abuse in the selective tourism destination in various types of specialized hotels.

651

Abstract

Purpose

This paper aims to determine to what extent there is a difference in employees’ perception of abuse in the selective tourism destination in various types of specialized hotels.

Design/methodology/approach

A survey of employees in specialized hotels in the selective tourism destination has the sample of 1,796 cases. Multivariate analysis of variance is used for testing the level of perception’s differences.

Findings

There is a statistically significant difference in the perception of abuse among employees in various types of specialized hotels such as wellness hotels, sport hotels, business hotels and congress hotels.

Research limitations/implications

The results offer employees’ perception of differences about abuse in various types of specialized hotels in the selective tourism destination. There is a possibility of practical usage of methodology for identification of the most often types of abuse in specialized hotels. The identification of abuse is to protect specific social structures such as employees in specialized hotels in the selective tourism destination.

Originality/value

Research could serve as a good example for future practical and theoretical research in the field of abuse and specialized hotels. The paper can be used as a methodological tool to show how to identify the most often types of abuse in specialized hotels in a concrete selective tourism destination.

Details

International Journal of Contemporary Hospitality Management, vol. 30 no. 2
Type: Research Article
ISSN: 0959-6119

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Article
Publication date: 18 October 2017

Srdjan Jovic, Dragan Lazarevic and Aleksa Vulovic

The paper aims to analyze chip formation during machining process since it can be a very important indicator for the quality of the machining process, as some chip forms can be…

119

Abstract

Purpose

The paper aims to analyze chip formation during machining process since it can be a very important indicator for the quality of the machining process, as some chip forms can be undesirable.

Design/methodology/approach

It is essential to determine the sensitivity of the chip formation on the basis of different machining parameters. The main goal of the study was to analyze the sensitivity of the chip formation during the machining process by using adaptive neuro-fuzzy inference system (ANFIS).

Findings

According to the results, the chip formation is the most sensitive to feed rate.

Originality/value

Different cutting tests were performed to monitor the chip formation on the basis of the cutting forces and the cutting displacement. ANFIS was used to estimate the sensitivity of the chip formation during the cutting process on the basis of different parameters.

Details

Sensor Review, vol. 37 no. 4
Type: Research Article
ISSN: 0260-2288

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Article
Publication date: 22 November 2017

Obrad Anicic, Srdjan Jovic, Srdan Tasic, Aleksa Vulovic and Milivoje Jovanovic

This study aims to detect the temperature distribution in the cutting zone during the machining process. Furthermore, temperature influence in the cutting zone on the forms of…

114

Abstract

Purpose

This study aims to detect the temperature distribution in the cutting zone during the machining process. Furthermore, temperature influence in the cutting zone on the forms of chip shapes during the turning of Steel 30CrNiMo8 was evaluated. It is very important to use optimal machining parameters to get the best production results or for high control of the machining process.

Design/methodology/approach

Temperature distribution in the cutting zone during the machining process could affect the forms of chip shapes. Forms of chip shapes could be considered as the most important indicator for the quality of the machining process.

Findings

Therefore, in this study, the forms of chip shapes based on the temperature distribution in the cutting zone were examined.

Originality/value

It was found that the snarled chip type and the loose chip type have the highest temperature variation during the machining process.

Details

Sensor Review, vol. 38 no. 1
Type: Research Article
ISSN: 0260-2288

Keywords

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Book part
Publication date: 16 September 2022

Goran Petković, Dubravka Užar and Aleksa Dokić

Food fraud has vexed the food industry throughout history. Today, it is still a present and multidimensional problem affecting all parts of the food industry. Food fraud…

Abstract

Food fraud has vexed the food industry throughout history. Today, it is still a present and multidimensional problem affecting all parts of the food industry. Food fraud encompasses adulteration, counterfeit, diversion of products outside of intended markets, over-run, simulation, tampering, theft, misrepresentation or mislabelling, malicious poisoning, bioterrorism or sabotage. It is difficult to detect and trace the source of unintentional contamination and related food safety concerns and even more difficult to detect instances of product fraud. The most common product categories that are associated with food fraud are olive oil, milk and milk-based products, fish and seafood, wine, tea, honey and organic foods. On the other hand, knowledge on what influences the occurrence of fraud in food supply chain is limited. The main research aim in this chapter is to determine key factors which influence the occurrence of food fraud within the organic supply chain, and how these factors differ between various organic marketing channel members. We focus on the application of qualitative methods for detecting key food fraud aspects including broad practical areas, such as opportunities and motivations to commit fraud, as well as the presence or lack of suitable food fraud control measures. These three key aspects are assessed to identify the perceived fraud vulnerability of the organic supply chain. The research is conducted with special attention to the context of the transition economies, since these markets require a new, comprehensive strategic approach to preventing and detecting food fraud and adulteration. The entire analysis is conducted on the Serbian market.

Details

Counterfeiting and Fraud in Supply Chains
Type: Book
ISBN: 978-1-80117-574-6

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Article
Publication date: 17 August 2012

Andreas Novy

The purpose of this self‐reflective paper is to focus on practical efforts to combat inequality and foster intercultural dialogue in education. It introduces “knowledge…

455

Abstract

Purpose

The purpose of this self‐reflective paper is to focus on practical efforts to combat inequality and foster intercultural dialogue in education. It introduces “knowledge alliances”, a type of social practice open for education technologies.

Design/methodology/approach

The paper is structured in a theoretical and an empirical part. The theoretical part ledge production is divided in two sections: the first one summarizes transdisciplinarity and Paulo Freire's dialogical pedagogy as two innovative approaches to knowledge sharing, production and appropriation. In the second section knowledge alliances are presented as innovative forms of lasting learning and research partnerships. The empirical part presents a case study and discusses the potential and limits of this specific knowledge alliance.

Findings

The paper demonstrates the importance of a partnership approach to combat inequality and discrimination. Knowledge alliance is a normative as well as an analytical concept to grasp the dynamics of lasting and transdisciplinary cooperation. For multicultural education, their implementation can be supported by learning technologies.

Research limitations/implications

The paper is a self‐reflection on a lasting learning and research cooperation which offers deep insights into practical challenges. The limitations of these socially innovative practices are the lack of ex‐ante scientific rigor.

Practical implications

The paper argues in favour of lasting cooperation.

Social implications

The paper shows the necessity to link practice and theory in knowledge alliances which last beyond the single project.

Originality/value

The paper introduces the term knowledge alliances and the related normative and analytical implications.

Details

Multicultural Education & Technology Journal, vol. 6 no. 3
Type: Research Article
ISSN: 1750-497X

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Article
Publication date: 13 March 2009

Jacqueline Harding, Judit Szakacs and Becky Parry

This paper aims to examine what elements in online environments promote engagement, learning and repeated visits for children aged 6‐12 years.

1583

Abstract

Purpose

This paper aims to examine what elements in online environments promote engagement, learning and repeated visits for children aged 6‐12 years.

Design/methodology/approach

An in‐depth textual analysis, exploring components such as navigation, construction of site, character choice and development, style of text, types of questioning, animation, color and other factors, of six English‐language web sites, describing themselves as “educational and fun”, was carried out against a background of literature available on web site design for children, relying particularly on media text analysis and an evaluation method produced in relation to children's motivation and web site use.

Findings

The analysis of the six web sites resulted in a number of usability requirements for children's web sites, including the following: web sites should have an understanding of the community of users they serve; web sites should offer dynamic forms of learning; web sites should encourage interaction between users and site designers; web sites should offer open activities rather than closed ones; web sites should view young people as persons with rights.

Research limitations/implications

Insights gained from the analysis of six web sites are hard to generalize. User behavior was not studied.

Practical implications

Web designers should bear the usability requirements in mind when designing web sites for children.

Originality/value

Although educational content for children on the internet is growing exponentially, the area is relatively under‐researched. This is one of the first detailed analyses of entertaining educational web sites targeting children.

Details

Young Consumers, vol. 10 no. 1
Type: Research Article
ISSN: 1747-3616

Keywords

Available. Content available
Book part
Publication date: 16 September 2022

Free Access. Free Access

Abstract

Details

Counterfeiting and Fraud in Supply Chains
Type: Book
ISBN: 978-1-80117-574-6

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