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1 – 10 of 16
Article
Publication date: 6 March 2017

Alejandro Naval, Hector Sarnago, Ignacio Lope, Oscar Lucia and José M. Burdio

Litz wire manufacturing using mechanical procedures presents several limitations regarding reliability and repeatability, especially when a small strand diameter is used. This…

Abstract

Purpose

Litz wire manufacturing using mechanical procedures presents several limitations regarding reliability and repeatability, especially when a small strand diameter is used. This paper aims to propose a power supply design for Litz wire manufacturing using a high-frequency high-performance resonant converter.

Design/methodology/approach

This paper proposes the design of a resonant power supply for induction heating specially designed to tackle with the challenge of heating Litz wires quickly.

Findings

The proposed converter enables the removal of the isolating coating from the Litz wire through induction heating, improving significantly the manufacturing process.

Originality/value

The proposed converter improves significantly the manufacturing process of Litz wire through induction heating, with economic and reliability benefits.

Details

COMPEL - The international journal for computation and mathematics in electrical and electronic engineering, vol. 36 no. 2
Type: Research Article
ISSN: 0332-1649

Keywords

Article
Publication date: 6 March 2017

Oscar Lucia, Hector Sarnago and José M. Burdio

Wide-bandgap (WBG) semiconductors have emerged as a disruptive technology in the power electronics sphere. This paper aims to analyse and discuss the importance for induction…

Abstract

Purpose

Wide-bandgap (WBG) semiconductors have emerged as a disruptive technology in the power electronics sphere. This paper aims to analyse and discuss the importance for induction heating systems and gives some examples and highlights some future design trends and perspectives.

Design/methodology/approach

The benefits of WBG semiconductors are reviewed with a special emphasis on induction heating applications.

Findings

WBG devices enable the design of higher-performance induction heating power supplies. A significant selection of the reported converters is discussed, highlighting the benefits of this technology.

Originality/value

This paper highlights the benefits of WBG semiconductors and their potential to change and improve induction heating technology in the next years.

Details

COMPEL - The international journal for computation and mathematics in electrical and electronic engineering, vol. 36 no. 2
Type: Research Article
ISSN: 0332-1649

Keywords

Article
Publication date: 13 September 2011

Claudio Carretero, Óscar Lucía, Jesús Acero, Rafael Alonso and José M. Burdío

The aim of this paper is to propose a design procedure based on the impedance boundary condition in order to simplify the design of inductors for domestic induction heating…

Abstract

Purpose

The aim of this paper is to propose a design procedure based on the impedance boundary condition in order to simplify the design of inductors for domestic induction heating systems.

Design/methodology/approach

An electromagnetic description of the inductor system is performed to substitute the effects of a component, named system load, for a mathematical condition, the so‐called impedance boundary condition. This is suitable to be used in electromagnetic systems involving high conductive materials at medium frequencies, as it occurs in an induction heating system. Applying this approach, a simplified electrical model arises from the general system.

Findings

A considerable reduction in the efforts devoted to design a coil for induction heating purposes is achieved, because the solution considering the variation of three physical parameters are projected to a one‐dimensional space only depending on a single parameter named corrected penetration depth. This proposal assesses the working conditions of standard induction systems.

Practical implications

This work is performed to achieve a better understanding of the fundamentals involved in the electromagnetic modeling of an induction heating system. The main goal is the definition of a better coil design process because it is probably the most time‐consuming task in the construction of a complete induction system.

Originality/value

In this paper, the so‐called corrected penetration depth is defined. This single parameter allows explaining the influence of the physical parameter of the inductor load and the excitation frequency in the equivalent of the complete inductor system. The numerical results carried out considering the corrected penetration depth instead of the physical load properties have been validated experimentally.

Details

COMPEL - The international journal for computation and mathematics in electrical and electronic engineering, vol. 30 no. 5
Type: Research Article
ISSN: 0332-1649

Keywords

Article
Publication date: 12 April 2011

Oscar Ricci

Celebrity‐spotters actively pursue celebrities in order to take photographs of them. This often involves extensive travelling, sometimes to remote destinations. The purpose of…

720

Abstract

Purpose

Celebrity‐spotters actively pursue celebrities in order to take photographs of them. This often involves extensive travelling, sometimes to remote destinations. The purpose of this paper is to analyse this new type of tourism.

Design/methodology/approach

In order to understand this new type of tourism, the authors used a textual analysis of Italian celebrity‐spotting web sites and 31 in‐depth interviews with celebrity‐spotters.

Findings

The main characteristics of the celebrity‐spotters can be outlined: they practise a sort of “precision tourism”, characterised by close attention to the news in order to know where to go, flexibility for changing locations at the last moment, and a natural predisposition for new technologies. Celebrity‐spotting is not just an observational tourism, but rather a performing one; they must take photographs, gain access to the right places and ambush their targets.

Practical implications

Knowing the characteristics of celebrity‐spotters can help to better understand this new type of tourism, which has yet to be exploited by the tourism industry.

Originality/value

The paper presents an in‐depth analysis of a rather unknown and unexplored type of tourist.

Details

Worldwide Hospitality and Tourism Themes, vol. 3 no. 2
Type: Research Article
ISSN: 1755-4217

Keywords

Article
Publication date: 4 March 2019

Nuria Gisbert-Trejo, Jon Landeta, Eneka Albizu and Pilar Fernández-Ferrín

The purpose of this study is to present a conceptual model that comprises the four phases of an inter-organizational mentoring (IOM) process.

365

Abstract

Purpose

The purpose of this study is to present a conceptual model that comprises the four phases of an inter-organizational mentoring (IOM) process.

Design/methodology/approach

This study used a focus group of 19 expert coordinators on IOM programs who met once at the Basque College of Economists. The session was recorded and notes were taken and distributed to all participants.

Findings

Based on the focus group, the authors developed a four-phase model of IOM. The phases this conceptual model proposes for IOM are awakening, transcendence, organizational bond and maturity.

Practical implications

These four phases should help mentors to guide mentees in the completion of an effective IOM process. This model is a re-conceptualization from the traditional mentoring phases, as the nature of the mentoring process is different. However, getting to understand the phases of IOM will enlighten the understanding of this phenomenon that is a growing option for managers in their career development as IOM helps managers to acquire skills and competencies.

Originality/value

This work contributes to the comprehension of this new form of alternative mentoring, clarifying for mentees and mentors, what process they are going to follow. Additionally, it provides clear criteria for inter-organizational program coordinators on how to organize these kinds of programs. In the opinion of the authors, this paper is original because it provides an in-depth understanding of IOM, which is an HRD technique that has barely been studied to date.

Details

Development and Learning in Organizations: An International Journal, vol. 33 no. 2
Type: Research Article
ISSN: 1477-7282

Keywords

Article
Publication date: 11 October 2021

Nuria Gisbert-Trejo, Eneka Albizu, Jon Landeta and Pilar Fernández-Ferrín

This article aims to present the differences in implementation between individual mentoring programs (IMPs) and group mentoring programs (GMPs).

397

Abstract

Purpose

This article aims to present the differences in implementation between individual mentoring programs (IMPs) and group mentoring programs (GMPs).

Design/methodology/approach

This exploratory study used semi-structured interviews with 16 experts: mentoring program (MP) coordinators, consultants and mentors. During the interviews, the steps in implementing a mentoring program were reviewed and discussed by practitioners.

Findings

Based on the interviews and contrasting with the proposed implementation model, the authors compared IMPs and GMPs. The results highlight the role of the GMP coordinators, especially in the selection of mentors, mentees and generating resources that favor the beneficial effects of group dynamics on mentoring processes.

Practical implications

This model for implementing MPs and the differences identified between IMPs and GMPs provide practical help to program coordinators (PCs) and mentors to deploy MPs by highlighting the relevant aspects.

Originality/value

Mentoring is a Human Resource Development (HRD) technique whose implementation at the program level needs further deepening for practitioners. This is the first work that emphasizes the differences to be considered in the design and implementation of MPs by taking the individual or group dimension of mentoring.

Details

Development and Learning in Organizations: An International Journal, vol. 36 no. 4
Type: Research Article
ISSN: 1477-7282

Keywords

Content available
Article
Publication date: 26 October 2012

345

Abstract

Details

International Marketing Review, vol. 29 no. 6
Type: Research Article
ISSN: 0265-1335

Article
Publication date: 1 August 1999

Andrew Calabrese

The prospect that technological and social innovation in the use of communication and information technologies are bringing about an end to sovereignty has been a source of…

1386

Abstract

The prospect that technological and social innovation in the use of communication and information technologies are bringing about an end to sovereignty has been a source of optimism, pessimism and ambivalence. It has captured the popular imagination and it can be found in the anxieties of national leaders about the mingling and collision of cultures and cultural products within and across their borders, and about growing awareness that environmental threats bow to no flag. According to much of this discourse, national governments are becoming increasingly powerless in their battles against real or imagined plights of cultural imperialism (and sub‐imperialism, that is, cultural imperialism within states) and capital mobility, as well as in their efforts to effectively exercise political control through surveillance and censorship. The end of sovereignty is a theme in political discussions about new pressures brought on by global regimes of trade and investment, and by unprecedented levels of global criminal networks for drug trafficking, money laundering and trade in human flesh. Social movements and non‐governmental organizations (NGOs) have reflected this by recognizing the need to match the scale of the problems they confront with appropriately scaled collective action. This article examines the discourse about the end of sovereignty and therise of new institutions of global governance. Particular emphasis is given to how advancements in the means of communication have produced the ambivalent outcomes of threatening the democratic governance of sovereign states, and serving as foundations for the assertion of democratic rights and popular sovereignty on a global scale.

Details

info, vol. 1 no. 4
Type: Research Article
ISSN: 1463-6697

Keywords

Article
Publication date: 1 February 1946

EUGENE B. POWER

The year 1938, not so distant in point of time, but early in modern microfilm history, saw the establishment of University Microfilms as the first commercially operated microfilm…

Abstract

The year 1938, not so distant in point of time, but early in modern microfilm history, saw the establishment of University Microfilms as the first commercially operated microfilm service to serve the needs of scholars and libraries. Other laboratories had been established earlier at the National Archives, the Library of Congress, and the University of Chicago, but each of these had the benefit of outside funds for equipment and overhead expenses and each was primarily concerned with servicing its own collections. University Microfilms sought to provide effective microfilm service at rates comparable with those of subsidized laboratories.

Details

Journal of Documentation, vol. 2 no. 1
Type: Research Article
ISSN: 0022-0418

Article
Publication date: 22 December 2022

Sara Dolnicar

The purpose of this perspective paper is to draw attention to how the tourism industry can take action to contribute to United Nations Sustainable Development Goal 12 by nudging…

Abstract

Purpose

The purpose of this perspective paper is to draw attention to how the tourism industry can take action to contribute to United Nations Sustainable Development Goal 12 by nudging tourists to behave in more environmentally sustainable ways. Many of the available practical approaches are easy and cheap to implement and therefore can be deployed easily by small and medium-sized tourism businesses.

Design/methodology/approach

This perspective paper reviews past contributions to United Nations Sustainable Development Goal 12 and calls for more future research that develops and empirically test effective behavioural change interventions.

Findings

Future research must focus on two directions: the development and empirical testing in the field of new behavioural change interventions that entice tourists to behave in more environmentally sustainable ways, and the development and large-scale deployment of affordable instrumentation to automatically and continuously measure the environmental performance of tourism businesses.

Originality/value

This perspective paper synthesizes literature and point to important new future research directions. To the best of the authors’ knowledge, this is the first synthesis of past tourism research that has developed and empirically tested tangible approaches the tourism industry can deploy to contribute to SGD 12.

目的

这份前瞻性报告回顾了过去对联合国可持续发展之第十二目标有贡献的文章, 并呼吁未来应当开展更多有关于开发和实证检验有效行为改变的研究。

设计/方法论/方针

这份报告的目的是吸引更多关注在于旅游业如何采取行动, 通过促使游客以更环保的方式行事, 为联合国可持续发展之第十二目标作出贡献。其中的许多方法易于实施且成本低廉, 中小型旅游企业也可以轻松推广应用。

研究结果

未来的研究必须集中在两个方向:(1) 开发和在实地中实证检验新的行为改变干预措施, 以吸引游客以更环保的方式行事, 以及(2) 开发和大规模推广负担得起的仪器, 以自动和持续测量旅游企业的环境绩效。

原创性/价值

这份报告综合了文献, 并指出了未来重要的新研究方向。这是对过去旅游研究的首次综合, 这些研究开发并实证检验了旅游业可以推广应用的具体方法, 以促进联合国可持续发展之第十二目标的发展。

Objetivo

El objectivo de este documento de perspectiva es llamar la atención sobre cómo la industria del turismo puede tomar las medidas necesarias para contribuir al Objetivo de Desarrollo Sostenible 12 de las Naciones Unidas al alentar a los turistas comportarse de una manera ambientalemente sostenible. La mayoría de las medidas prácticas disponibles son fáciles y económicas de implementar por las pequeñas y medianas empresas turísticas.

Diseño/metodología/enfoque

Este documento de perspectiva revisa las pasadas contribuciones al Objetivo de Desarrollo Sostenible 12 de las Naciones Unidas y pide más investigaciones futuras que desarrollen y prueben empíricamente intervenciones efectivas para cambiar los comportamientos.

Resultados

La investigación futura debe centrarse en dos direcciones: (1) el desarrollo y las pruebas empíricas en el campo de nuevas intervenciones de cambio de comportamiento que atraigan a los turistas a comportarse de una manera ambientalmente sostenible, y (2) el desarrollo y despliegue a gran escala de instrumentación asequible para medir de forma automática y continua el desempeño ambiental de las empresas turísticas.

Originalidad/valor

Este documento de perspectiva sintetiza la literatura y señala puntos importantes para futuras investigaciones. Es la primera síntesis de investigaciones turísticas pasadas que ha desarrollado y probado empíricamente enfoques tangibles que la industria del turismo puede implementar para contribuir al SGD 12.

Details

Tourism Review, vol. 78 no. 2
Type: Research Article
ISSN: 1660-5373

Keywords

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