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Article
Publication date: 18 January 2019

Marcin Lefik, Krzysztof Komeza, Ewa Napieralska-Juszczak, Daniel Roger and Piotr Andrzej Napieralski

The purpose of this paper is to present a comparison between reluctance synchronous machine-enabling work at high internal temperature (HT° machine) with laminated and solid rotor.

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Abstract

Purpose

The purpose of this paper is to present a comparison between reluctance synchronous machine-enabling work at high internal temperature (HT° machine) with laminated and solid rotor.

Design/methodology/approach

To obtain heat sources for the thermal model, calculations of the electromagnetic field were made using the Opera 3D program including effect of rotation and the resulting eddy current losses. To analyse the thermal phenomenon, the 3D coupled thermal-fluid (CFD) model is used.

Findings

The presented results show clearly that laminated construction is much better from a point of view of efficiency and temperature. However, solid construction can be interesting for high speed machines due to their mechanical robustness.

Research limitations/implications

The main problem, despite the use of parallel calculations, is the long calculation time.

Practical implications

The obtained simulation and experimental results show the possibility of building a machine operating at a much higher ambient temperature than it was previously produced for example in the vicinity of the aircraft turbines.

Originality/value

The paper presents the application of fully three-dimensional coupled electromagnetic and thermal analysis of new machine constructions designed for elevated temperature.

Details

COMPEL - The international journal for computation and mathematics in electrical and electronic engineering, vol. 38 no. 4
Type: Research Article
ISSN: 0332-1649

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Article
Publication date: 6 March 2017

Xiaoxi Zhou, Hui’e Liang and Zhiya Dong

Today clothing has become the largest category in online shopping in China, and even in Asia-Pacific. The satisfaction degree of apparel online shopping can be improved by…

1033

Abstract

Purpose

Today clothing has become the largest category in online shopping in China, and even in Asia-Pacific. The satisfaction degree of apparel online shopping can be improved by effective personalized recommendation. The purpose of this paper is to propose a personalized recommendation model and algorithm based on Kansei engineering, traditional filtering algorithm and the knowledge relating to apparel.

Design/methodology/approach

Users’ perceptual image and the design elements of apparel based on Kansei engineering are discussed to build the mapping relation between the design elements and user ratings employing verbal protocol, semantic differential and partial least squares. The implicit knowledge and emotional needs pertaining to users are accessed using analytic hierarchy process. A personalized recommendation model for apparel online shopping is established and the algorithm for the personalized recommendation process is proposed. To present the personalized recommendation model, men’s plaid shirts are taken as the example, and the recommendations of apparel for online shopping were implemented and ranked in the context of differing users’ emotional needs. A comparison between the traditional model and this model is made to verify the effectiveness.

Findings

The recommendation model is capable of analyzing data and information effectively, and providing fast, personalized apparel recommendation services in accordance with users’ emotional needs. The experimental results suggest that the model is effective.

Originality/value

Similar researches of recommendation mainly focus on the field of computer science, the basic idea of which is using users’ history accessing records or the preferences of other similar users for determination of users’ preferences. Since the attributes of apparel products are not factored in the approach referred above, the issue of personalized recommendation cannot be solved in a really effective way. Combining Kansei engineering and recommendation algorithm, a framework for apparel product recommendation is presented and it is a new way for improvement of recommendations for apparel products on shopping sites.

Details

International Journal of Clothing Science and Technology, vol. 29 no. 1
Type: Research Article
ISSN: 0955-6222

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Article
Publication date: 1 November 2018

Jessica Zacher Pandya, Nat Hansuvadha and Kathleah Allene Consul Pagdilao

The purpose of this paper is to examine, through an intersectional lens, how digital video composing can be an act of redistributive social justice for students with learning…

353

Abstract

Purpose

The purpose of this paper is to examine, through an intersectional lens, how digital video composing can be an act of redistributive social justice for students with learning disabilities.

Design/methodology/approach

The authors draw on two years’ worth of observation, interview, survey and digital video data to present a case study of Javier (all names are pseudonyms), a Latinx English Learner with several learning disabilities. The authors worked with him, making digital videos in a general education classroom as part of a larger design-based study. The authors describe how he made meaning in various modes, across modes, and how his intersectional identities inflected his meaning-making and were visible in his video artifacts.

Findings

Javier was an able digital composer, made meaning across modes and was attentive to audience. His videos offer a portrait of a child with learning disabilities navigating his complex cultural worlds.

Research limitations/implications

This is a single case study built to bridge multiple theoretical and disciplinary backgrounds. Javier was able to compose semiotically powerful messages with socially powerful digital tools.

Originality/value

The authors argue that the use of such tools is a chance for redistributive social justice. Children traditionally underserved by innovations in digital making should not be left out.

Details

English Teaching: Practice & Critique, vol. 17 no. 4
Type: Research Article
ISSN: 1175-8708

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Article
Publication date: 7 March 2019

Aku Valtakoski, Javier Reynoso, Daniel Maranto, Bo Edvardsson and Egren Maravillo Cabrera

The purpose of this paper is to test how national culture may help to explain cross-country differences in new service development (NSD) by comparing the impact of NSD success…

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Abstract

Purpose

The purpose of this paper is to test how national culture may help to explain cross-country differences in new service development (NSD) by comparing the impact of NSD success factors between Mexico and Sweden.

Design/methodology/approach

Eight hypotheses based on prior literature on NSD and national culture were tested using covariance-based structural equation modeling and survey data from 210 Mexican and 173 Swedish firms.

Findings

Launch proficiency and customer interaction had a positive impact on NSD performance with no difference between the two cultures. NSD process formalization did not have clear positive impact on NSD performance but had a statistically significantly stronger impact in the structured culture (Mexico). Team empowerment affected NSD performance positively, but the difference between cultures was non-significant.

Research limitations/implications

The impact of national culture depends on the type of NSD success factor. Some factors are unaffected by the cultural context, while factors congruent with the national culture enhance performance. Factors incongruent with national culture may even hurt NSD performance.

Practical implications

When choosing priorities in NSD improvement, managers need to consider the national culture environment.

Originality/value

Paper directly tests how national culture moderates NSD performance using primary data. Findings suggest that the effects of NSD success factors are contingent on congruence with national culture.

Details

Journal of Service Management, vol. 30 no. 2
Type: Research Article
ISSN: 1757-5818

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Article
Publication date: 18 June 2019

Francisco Javier Carrillo, Bo Edvardsson, Javier Reynoso and Egren Maravillo

This paper aims to deepen the understanding of resource integration for value co-creation within service-dominant logic (SDL), by drawing on key knowledge management (KM) concepts.

685

Abstract

Purpose

This paper aims to deepen the understanding of resource integration for value co-creation within service-dominant logic (SDL), by drawing on key knowledge management (KM) concepts.

Design/methodology/approach

This conceptual study introduces three key KM concepts, namely, object, agent and context to SDL; thus, deepening the understanding of how resources are becoming when actors are engaged in co-creating value-in-context.

Findings

This paper extends understanding of actors’ uses of knowledge in their efforts to co-create value. Paradoxically, SDL takes a phenomenological approach to understanding value co-creation, whereas KM embraces a realist-phenomenological view. Emphasizing knowing rather than knowledge reveals that there is no object without an agent, no agency without context and no knowledge without value-alignment. Thus, the paper contributes to theorizing about resource integration through SDL by identifying the need for effective alignment between relevant objects, capable agents and meaningful contexts for value to emerge. The paper also contributes with four facilitators of object-agent-context alignment: tacit knowledge contextualization, collective sensemaking, shared values among engaged actors and feedback on alignment effectiveness.

Originality/value

It advances current conceptualizations of resource integration and value co-creation in SDL by paying explicit attention to a KM perspective.

Details

International Journal of Quality and Service Sciences, vol. 11 no. 3
Type: Research Article
ISSN: 1756-669X

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Book part
Publication date: 8 November 2010

Michael Daniel Metzger, Héctor Martinez and Miguel Angel Lopez

For decades, the Altiplano farmers of Bolivia had been marginalized by the remoteness of their home and exploitation by the private sector and injustices inflicted by the…

Abstract

For decades, the Altiplano farmers of Bolivia had been marginalized by the remoteness of their home and exploitation by the private sector and injustices inflicted by the government. The notion that this impoverished region could sustain economic development might correctly have been described as hopeless. The Altiplano farmers’ inability to develop a sustainable source of income threatened their very cultural identity. The only manner in which the farmers’ culture might be sustained was through charitable donations from international NGOs. But it is exactly in this situation, when obstacles are stacked against success, where appreciative intelligence can provide an avenue to overcome despair. After years of working with NGOs, Javier Hurtado was able to identify a source of value that could provide hope and a path to sustainable development for the Altiplano farmers. This is the story of the impact that one individual's application of appreciative intelligence can have on a community. The Irupana story illustrates how our destinies are shaped by our ability to discover that which is best within ourselves and the communities in which we live. This is the story of Javier Hurtado and Martha Cordero, founders of Irupana Organic Foods located in the Bolivian Altiplano, as they discover the unique potential in the harsh Bolivian landscape and the impoverished peasant farmers that inhabit this setting. Through the framework of appreciative intelligence, the researchers observed the entrepreneurs reframe their circumstances around the positive potential that is within the Altiplano-farming community and its unique natural resources, and create a successful organic foods company.

Details

Positive Design and Appreciative Construction: From Sustainable Development to Sustainable Value
Type: Book
ISBN: 978-0-85724-370-6

Available. Open Access. Open Access
Article
Publication date: 8 July 2024

Javier Andrés, José E. Boscá, Rafael Doménech and Javier Ferri

The purpose of this paper is to asses the welfare and macroeconomic implications of three distinct degrowth strategies designed to reduce carbon emissions: penalizing fossil fuel…

636

Abstract

Purpose

The purpose of this paper is to asses the welfare and macroeconomic implications of three distinct degrowth strategies designed to reduce carbon emissions: penalizing fossil fuel demand, substituting aggregate consumption with leisure and disincentivizing total factor productivity (TFP) growth.

Design/methodology/approach

Using an environmental dynamic general equilibrium (eDGE) model that incorporates both green renewable technologies and fossil fuels in the production process, this study sets an emissions reduction target aligned with the goals of the Paris Agreement by 2050.

Findings

The results reveal that the conventional degrowth strategy, wherein a reduction in the consumption of goods and services is compensated with an increase in leisure, may entail significant economic consequences, leading to a notable decline in welfare. In particular, a degrowth scenario resulting from a decline in TFP yields the most pronounced reduction in welfare. Conversely, inducing a reduction in fossil fuel demand by fiscally inflating the price of the imported commodity, despite potential social backlash, exhibits noticeably less detrimental welfare effects compared to other degrowth policies. Furthermore, under this degrowth strategy, the findings suggest that a globally coordinated strategy could result in long-term welfare gain.

Originality/value

To the best of the authors’ knowledge, this is the first contribution that uses an eDGE model to evaluate the welfare implications of an additional degrowth strategy amidst the ongoing inertial reduction of carbon emissions.

Details

Applied Economic Analysis, vol. 32 no. 95
Type: Research Article
ISSN: 2632-7627

Keywords

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Case study
Publication date: 1 December 2020

Mario Andres Manzi, Laura Blanco Murcia and Monica Ramos Mejia

Identify how value is created through a product-service system (PSS). Recognize the different types of PSS and their characteristics at an economic and environmental level. Design…

Abstract

Learning outcomes

Identify how value is created through a product-service system (PSS). Recognize the different types of PSS and their characteristics at an economic and environmental level. Design a business model for a PSS that allows to generate economic and environmental value in a sustainable way.

Case overview/synopsis

On October 15th of 2014, Javier Ramirez, Chief Executive Officer of Famoc Depanel, was in his office in Bogotá, Colombia, thinking about a decision he had to take. Either Famoc Depanel continued in the traditional office furniture market generating new lower-cost products, and continued facing the informal competition or the company risked accepting a new business that the National Tax and Customs Direction of Colombia (DIAN, the acronym according to its name in Spanish) had proposed and give its business a complete turnaround. Either way, he would keep his commitment to innovation and environmental care.

Complexity academic level

This case is appropriate for use in sustainability and entrepreneurship courses with contents about business models based on PSS. This case can be used at undergraduate and graduate levels. It is recommended that students have prior knowledge about business models and the Canvas Business Model methodology.

Supplementary materials

Teaching Notes are available for educators only.

Subject code

CSS 11: Strategy.

Details

Emerald Emerging Markets Case Studies, vol. 10 no. 4
Type: Case Study
ISSN: 2045-0621

Keywords

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Article
Publication date: 15 August 2008

Martin Clarke, Catherine Bailey and Joanna Burr

This paper is derived from a two‐year study that sought to provide a critical understanding of the current state of business leadership development (BLD) and to identify…

2778

Abstract

Purpose

This paper is derived from a two‐year study that sought to provide a critical understanding of the current state of business leadership development (BLD) and to identify directions for innovative future practice. The second of two companion papers, this contribution aims to investigate the influence of unfavourable competing agendas on BLD and how human resource development (HRD) professionals can work effectively within such circumstances.

Design/methodological approach

The paper analyses three case studies of HRD managers who made significant contributions to their organisation's BLD despite unfavourable political circumstances. These individuals were selected from a population of 190 managers from the first phase of the overall study.

Findings

The cases highlight the centrality of political activity to effective BLD design and implementation that is subject to unfavourable circumstances. In particular, the individuals demonstrated the importance of relationship management, challenge and critique and of building change from the bottom up, irrespective of direct senior management support.

Practical implications

The cases shed light on the types of behaviour that may enable HRD professionals to make an effective contribution to BLD, even when there is little formal senior management support. Questions are provided to encourage personal learning and debate about the role and value of HR in the enactment of BLD.

Originality/value

The findings indicate that much best practice advice on leadership development needs to be tempered with an acknowledgement of the degree to which it is subject to competing interests and postulates that constructive political action may be a legitimate activity for HRD managers despite mainstream unitarist advice.

Details

Journal of Management Development, vol. 27 no. 8
Type: Research Article
ISSN: 0262-1711

Keywords

Available. Open Access. Open Access
Article
Publication date: 17 October 2022

Jesús Miguel Chacón, Javier Sánchez-Reyes, Javier Vallejo and Pedro José Núñez

Non-uniform rational B-splines (NURBSs) are the de facto standard for representing objects in computer-aided design (CAD). The purpose of this paper is to discuss how to stick to…

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Abstract

Purpose

Non-uniform rational B-splines (NURBSs) are the de facto standard for representing objects in computer-aided design (CAD). The purpose of this paper is to discuss how to stick to this standard in all phases of the additive manufacturing (AM) workflow, from the CAD object to the final G-code, bypassing unnecessary polygonal approximations.

Design/methodology/approach

The authors use a commercial CAD system (Rhino3D along with its programming environment Grasshopper) for direct slicing of the model, offset generation and trimming. Circular arcs are represented as quadratic NURBSs and free-form geometry as quadratic or cubic polynomial B-splines. Therefore, circular arcs are directly expressible as G2/G3 G-code commands, whereas free-form paths are rewritten as a succession of cubic Bézier curves, thereby admitting exact translation into G5 commands, available in firmware for AM controllers, such as Marlin.

Findings

Experimental results of this paper confirm a considerable improvement in quality over the standard AM workflow, consisting of an initial polygonization of the object (e.g. via standard tessellation language), slicing this polygonal approximation, offsetting the polygonal sections and, finally, generating G-code made up of polyline trajectories (G1 commands).

Originality/value

A streamlined AM workflow is obtained, with a seamless transfer from the initial CAD description to the final G-code. By adhering to the NURBS standard at all steps, the authors avoid multiple representations and associated errors resulting from approximations.

Details

Rapid Prototyping Journal, vol. 28 no. 11
Type: Research Article
ISSN: 1355-2546

Keywords

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