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Article
Publication date: 1 January 2012

Grzegorz Iwanski and Gonzalo Abad

Doubly fed induction generator DFIG applied in over 50 percent of modern variable speed wind power systems and interesting also for adjustable speed diesel generation sets or…

502

Abstract

Purpose

Doubly fed induction generator DFIG applied in over 50 percent of modern variable speed wind power systems and interesting also for adjustable speed diesel generation sets or multi‐megawatt water turbines is troublesome in the mean of maintenance of slip‐rings and brushes. Especially, it concerns isolated power systems and offshore wind turbines. Application of brushless DFIG in such cases eliminates the mentioned problem. Constructions of the machine and consequently the model and mathematical description is more complicated than classical slip‐ring DFIG, therefore it is still developed in several scientific institutions to obtain adequate performance. The following work is dedicated to mathematical description, modelling and implementation of the control method for autonomous operation in the laboratory model of brushless DFIG.

Design/methodology/approach

Analysis and simulation of the machine model and laboratory tests on a small scale prototype of brushless DFIG.

Findings

It has been proven that sensorless direct voltage control of DFIG can be applied for both slip‐ring and brushless machines, as it does not require machine parameters.

Research limitations/implications

Brushless DFIG development is far from the performance needed by industrial implementation. Lower efficiency and higher reactive power needed by the machine, in comparison to classical DFIG of the same power range, result from double air gap seen by magnetic flux. However, the constructions of prototype machines are better and better, and their capabilities become closer to DFIG.

Practical implications

Variable and adjustable speed generation systems such as wind turbines, diesel generation sets, water turbines.

Originality/value

Standalone power systems with DFIG described in several papers require quite complicated control methods based on the mathematical equations of the machine model. Thus, these methods have to be significantly modified for the brushless version of this machine type, due to the fact of a much more complicated model. The proposed sensorless method of the output voltage control requires only redesign (tuning) of the PI controllers responsible for control of the rotor current, stator voltage amplitude and frequency.

Details

COMPEL - The international journal for computation and mathematics in electrical and electronic engineering, vol. 31 no. 1
Type: Research Article
ISSN: 0332-1649

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Article
Publication date: 21 February 2020

Gonzalo Maldonado-Guzmán and Jose Arturo Garza-Reyes

Eco-innovation is a relatively recent construct in the literature, which nowadays more and more researchers and academics consider as one of the strategies that generate a higher…

787

Abstract

Purpose

Eco-innovation is a relatively recent construct in the literature, which nowadays more and more researchers and academics consider as one of the strategies that generate a higher level of sustainable and business performance. However, little is known about the influence of eco-innovation practices on sustainable performance and business performance, particularly in the automotive and auto parts industry. Therefore, this paper aims to fill this knowledge gap and explore the aforementioned interdependence.

Design/methodology/approach

The influence of eco-innovation practices on sustainable performance and business performance is investigated through a research framework consisting of 5 constructs, 25 items and 6 hypotheses derived from an extensive review of the literature. A self-administered questionnaire was distributed to 460 companies in the automotive and auto parts industry in Mexico. The data were analyzed through a confirmatory factor analysis, descriptive statistics and structural equation modeling.

Findings

The results obtained indicated that eco-innovation practices have a positive influence on both sustainable performance and business performance in the automotive and auto parts industry.

Originality/value

This paper provides further insightful evidence of the influence of eco-innovation practices on sustainable performance and business performance, particularly in the automotive and auto parts industry.

Details

International Journal of Innovation Science, vol. 12 no. 1
Type: Research Article
ISSN: 1757-2223

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Article
Publication date: 17 December 2019

Jose Ignacio Barrera, Juan Pablo Torres and Gonzalo Valdés

The purpose of this paper is to explore the microfoundations of innovation-enabling dynamic capabilities in Latin American firms and, in particular, their processes to: sense and…

348

Abstract

Purpose

The purpose of this paper is to explore the microfoundations of innovation-enabling dynamic capabilities in Latin American firms and, in particular, their processes to: sense and shape opportunities; seize opportunities; and maintain competitiveness through reconfiguring assets.

Design/methodology/approach

The authors carried out a confirmatory factor analysis of survey data obtained from a sample of 721 firms located in Latin America, and employed a hierarchical analysis of linear regressions with robust standard errors to test the hypotheses.

Findings

The authors found that when firms manage their innovation processes based on sensing opportunities and reconfiguring their tangible and intangible assets, they are more likely to improve on four innovation-related outcomes: development of new products and services; profitability; market share; and diversification.

Research limitations/implications

The findings are limited to the specific context of Latin American countries. In particular, the authors took a random sample of firms from a business directory built by prestigious Latin American business schools, but that may not be representative. Therefore, the generalizability of the results is limited beyond the type of companies that are represented in that sampling frame.

Originality/value

Contributions are twofold. First, the authors test the applicability of an orchestration model of dynamic capabilities to the Latin American context. And, second, the authors relate specific microfoundations of dynamic capabilities to the ability of firms to innovate successfully.

Propósito

El objetivo de este documento es explorar las micro-fundaciones de las capacidades dinámicas que hacen posible la innovación en las empresas latinoamericanas. En particular, sus procesos para: (1) detectar y dar forma a las oportunidades, (2) aprovechar las oportunidades y (3) mantenerse competitivas a través de la reconfiguración de sus activos.

Diseño/metodología/enfoque

Realizamos un análisis factorial confirmatorio con datos de una encuesta que hicimos a una muestra de 721 empresas en Latinoamérica, y empleamos un análisis jerárquico de regresiones lineales con error estándar robusto para probar nuestras hipótesis.

Hallazgos

Encontramos que cuando las empresas administran sus procesos de innovación basándose en (1) la detección de oportunidades y (2) la reconfiguración de sus activos tangibles e intangibles, es más probable que mejoren en cuatro objetivos relacionados a innovación: (1) desarrollo de nuevos productos y servicios, (2) sus retornos, (3) participación de mercado y (4) diversificación.

Limitación de la investigación

Nuestros hallazgos están limitados al contexto específico de los países de América Latina. Específicamente, tomamos una muestra aleatoria de empresas de un directorio de negocios creado por prestigiosas escuelas de negocios latinoamericanas, pero que puede no ser representativo. Entonces, la generalizabilidad de nuestros resultados es limitada más allá del tipo de empresas que están representadas en este marco muestral.

Originalidad/valor

Las contribuciones son dobles. Primero, probamos la aplicabilidad de un modelo de orquestación de capacidades dinámicas en el contexto latinoamericano. Y, segundo, relacionamos micro-fundaciones específicas de capacidades dinámicas con la habilidad de las empresas para innovar exitosamente.

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Article
Publication date: 12 February 2025

Gonzalo Lorenzo, Anders Dechsling and Anders Nordahl-Hansen

The objective of the research is to conduct a comprehensive analysis of the conceptual structure underlying global trends in the utilization of VR/AR for learning purposes among…

14

Abstract

Purpose

The objective of the research is to conduct a comprehensive analysis of the conceptual structure underlying global trends in the utilization of VR/AR for learning purposes among autistic children and adolescents.

Design/methodology/approach

With a sample of 57 documents obtained from different databases in the period 2010–2022, a scientific mapping was developed using the bibliometrix library designed in R.

Findings

It has been found that there are three main lines of work. The first with VR/AR with emotion recognition and theory of mind. Another line focused on “young children” that works on visual attention, simulation play and social communication. The third line is focused on adolescents with subthemes such as executive function, attention, social skills and learning environments.

Originality/value

The research allows the authors to design activities in those areas where the use of VR/AR has been successful. In this way, future implementation of these tools in the classroom is encouraged.

Details

Journal of Enabling Technologies, vol. 19 no. 1
Type: Research Article
ISSN: 2398-6263

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Article
Publication date: 6 August 2024

Erik Cateriano-Arévalo, Ross Gordon, Jorge Javier Soria Gonzáles (Pene Beso), Richard Manuel Soria Gonzáles (Xawan Nita), Néstor Paiva Pinedo (Sanken Bea), Maria Amalia Pesantes and Lisa Schuster

In marketing and consumer research, the study of Indigenous ideas and rituals remains limited. The authors present an Indigenous-informed study of consumption rituals co-produced…

142

Abstract

Purpose

In marketing and consumer research, the study of Indigenous ideas and rituals remains limited. The authors present an Indigenous-informed study of consumption rituals co-produced with members of the Shipibo–Konibo Indigenous group of the Peruvian Amazon. Specifically, the authors worked with the Comando Matico, a group of Shipibos from Pucallpa, Peru. This study aims to investigate how Indigenous spiritual beliefs shape health-related consumption rituals by focusing on the experience of the Shipibos and their response to COVID-19.

Design/methodology/approach

Drawing upon the principles of Indigenous research, the authors co-produced this study with the Comando Matico. The authors collaboratively discussed the research project’s design, analysed and interpreted data and co-authored this study with members of the Comando Matico. This study uses discourse analyses. The corpus of discourse is speech and text produced by the Comando Matico in webinars and online interviews during the COVID-19 pandemic. The full and active participation of the Comando Matico informed the discourse analysis by ensuring Indigenous knowledge, and worldviews were infused throughout the process.

Findings

The authors foreground how Indigenous spiritual beliefs act as a force that imbues the knowledge and practice of health, wellbeing and illness, and this process shapes the performance of rituals. In Indigenous contexts, multiple spirits coexist with consumers, who adhere to specific rituals to respond to and relate to these spirits. Indigenous consumption rituals involve the participation of non-human beings (called rao, ibo, yoshin and chaikoni by the Shipibos) and this aspect challenges the traditional notion of rituals and ritual elements in marketing.

Originality/value

The authors demonstrate how Indigenous spiritual beliefs shape consumption rituals in the context of health and draw attention to how the acknowledgement of alternative ontologies and epistemologies can help address dominant hierarchies of knowledge in marketing theory.

Details

Qualitative Market Research: An International Journal, vol. 27 no. 5
Type: Research Article
ISSN: 1352-2752

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Article
Publication date: 15 June 2015

Sofía Buelga, Maria J. Cava, Gonzalo Musitu and Eva Torralba

This paper aims to explore the prevalence rate of adolescents engaging in aggressive behaviours towards their peers using the Internet and mobile phones, while examining the…

1463

Abstract

Purpose

This paper aims to explore the prevalence rate of adolescents engaging in aggressive behaviours towards their peers using the Internet and mobile phones, while examining the duration and intensity of this cyberbullying, and to analyse differences in cyberbullying behaviours based on gender and age (academic grades). Research on cyberbullying indicates that it is a global problem that is increasing dramatically among adolescents.

Design/methodology/approach

The sample was composed of 1,415 Spanish adolescents of both sexes (760 boys and 655 girls) between 12 and 17 years old (M = 13.9 years old; SD = 1.4).

Findings

The results indicated that the cyberbullying prevalence among adolescents in the past year was 32 per cent. Likewise, the data suggest that boys and students in their fourth year of secondary education (15-17 years old) perpetrated cyberbullying on their peers more than girls and students in lower grades.

Research limitations/implications

The results presented in this research should be interpreted with caution due to its cross-sectional nature; a longitudinal study with measurements at different times would help to confirm the results observed here. On the other hand, in this study, the adolescents’ responses were obtained through self-reports and, although they could be subject to social desirability effects and biases, as indicated by Flisher et al. (2004), the reliability and validity of adolescent self-reports in the measurement of risk behaviours were quite acceptable.

Practical implications

It is of crucial importance to develop educational strategies designed to favour the responsible use of the new technologies. In many cases, children and adolescents are not aware of psychological and legal consequences that their cyber-aggressions can have on themselves, on the victims and on their families and social environment.

Social implications

The authors feel that this research may contribute to clarifying some crucial issues related to the growing problem of cyberbullying that affects adolescents in many countries of the world. As the present research deals with aspects of interactive technology and smart education, the authors believe that the findings reported in the manuscript would be of interest to potential readers of this Journal.

Originality/value

This paper is an original perspective on cyberbullying aggressors among secondary education students in a Spanish context.

Details

Interactive Technology and Smart Education, vol. 12 no. 2
Type: Research Article
ISSN: 1741-5659

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Article
Publication date: 6 April 2012

Anne R. Diekema

Together, increasing globalization and the internet created fertile grounds for the establishment of multilingual digital libraries. Providing cross‐lingual access to materials is…

2674

Abstract

Purpose

Together, increasing globalization and the internet created fertile grounds for the establishment of multilingual digital libraries. Providing cross‐lingual access to materials is of particular interest to political entities such as the European Union, which currently has 23 official languages, but also to multinational companies and countries that have different languages represented among their citizens. The main objective of this paper is to review the literature on multilingual digital libraries and provide an overview of this area.

Design/methodology/approach

Based on a thorough literature search in four different databases, a core set of literature on multilingual digital libraries was retrieved. Literature on various aspects of this topic was reviewed. The paper is organized based on emerging themes directly drawn from the literature. Where warranted additional literature is brought in to provide necessary background information or clarification.

Findings

Creating a multilingual digital library is a highly complex undertaking and typically requires a collaborative effort between different organizations and people with different areas of expertise. Enabling users to search across languages requires translation resources to cross the language barrier, which can be challenging depending on the language and resource availability. Additional challenges were found to be in data management (localization and language processing), representation (dealing with different fonts and character codes), development (creating international software, cross‐cultural collaboration), and interoperability (system architecture and data sharing). Research in multilingual digital libraries was mostly system based involving experimental systems or system prototypes.

Research limitations/implications

Most likely the literature review does not include all possible journal articles on multilingual digital libraries even though the literature searches done to obtain these articles were thorough and deliberate. Journal articles without the descriptors used in this search and those articles not indexed in the four different databases used in the search will not be included here. The review excludes cross‐language information retrieval research unless it is directly related to existing multilingual digital libraries, or a connection to digital libraries in general is made in the paper itself.

Originality/value

This paper provides the first literature review on the topic of multilingual digital libraries and provides a concise overview of relevant aspects in this area. The number of multilingual digital libraries is growing, as is the interest from the research community in these libraries to apply their research findings from cross‐language information retrieval. This review article provides a valuable entry point to the field of multilingual digital libraries for researchers, practitioners, and other interested parties.

Details

The Electronic Library, vol. 30 no. 2
Type: Research Article
ISSN: 0264-0473

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Article
Publication date: 1 April 2024

Srikant Gupta, Pooja S. Kushwaha, Usha Badhera and Rajesh Kumar Singh

This study aims to explore the challenges faced by the tourism and hospitality industry following the COVID-19 pandemic and to propose effective strategies for recovery and…

388

Abstract

Purpose

This study aims to explore the challenges faced by the tourism and hospitality industry following the COVID-19 pandemic and to propose effective strategies for recovery and resilience of this sector.

Design/methodology/approach

The study analysed the challenges encountered by the tourism and hospitality industry post-pandemic and identified key strategies for overcoming these challenges. The study utilised the modified Delphi method to finalise the challenges and employed the Best-Worst Method (BWM) to rank these challenges. Additionally, solution strategies are ranked using the Criteria Importance Through Intercriteria Correlation (CRITIC) method.

Findings

The study identified significant challenges faced by the tourism and hospitality industry, highlighting the lack of health and hygiene facilities as the foremost concern, followed by increased operational costs. Moreover, it revealed that attracting millennial travellers emerged as the top priority strategy to mitigate the impact of COVID-19 on this industry.

Originality/value

This research contributes to understanding the challenges faced by the tourism and hospitality industry in the wake of the COVID-19 pandemic. It offers valuable insights into practical strategies for recovery. The findings provide beneficial recommendations for policymakers aiming to revive and support these industries.

Details

Benchmarking: An International Journal, vol. ahead-of-print no. ahead-of-print
Type: Research Article
ISSN: 1463-5771

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Article
Publication date: 25 June 2020

Elisabetta Garagiola, Alessandro Creazza and Emanuele Porazzi

This study aims to analyze the managerial levers previously considered in literature in the setting of the provision of primary care and community services (in particular for…

216

Abstract

Purpose

This study aims to analyze the managerial levers previously considered in literature in the setting of the provision of primary care and community services (in particular for patients with long-term conditions being treated also at home) as well as those scarcely explored that could potentially be adopted in the future.

Design/methodology/approach

This study was a structured literature review. The authors retrieved papers, published from 2005–2020, from electronic databases (i.e. ABI/INFORM Complete, Jstor, PubMed and Scopus). Each selected paper was assigned to a framework category, and a thematic analysis was performed.

Findings

Topics scarcely explored in literature were related to logistics/supply chain, economic evaluations, performance management and customer satisfaction. Some papers embraced more than one management topic, confirming the multidisciplinary nature of territorial healthcare services. The majority of research, however, focused on only one aspect of primary care services, and a lack of an integrated view regarding the provision of those services emerged.

Originality/value

This study represents a first attempt to rationalize the fragmented body of knowledge on the topic of the provision of primary and community care services. This study enabled some light to be shed on the managerial levers already explored previously in literature and also identifies a number of trajectories for future research.

Details

Journal of Health Organization and Management, vol. 34 no. 5
Type: Research Article
ISSN: 1477-7266

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