Search results

1 – 10 of 472
Article
Publication date: 10 June 2014

Juan D. Gomez, Guido Bologna and Thierry Pun

The purpose of this paper is to overcome the limitations of sensory substitution methods (SSDs) to represent high-level or conceptual information involved in vision, which are…

Abstract

Purpose

The purpose of this paper is to overcome the limitations of sensory substitution methods (SSDs) to represent high-level or conceptual information involved in vision, which are mainly produced by the biological sensory mismatch between sight and substituting senses. Thus, provide the visually impaired with a more practical and functional SSD.

Design/methodology/approach

Unlike any other approach, the SSD extends beyond a sensing prototype, by integrating computer vision methods to produce reliable knowledge about the physical world (at the lowest cost to the user). Importantly though, the authors do not abandon the typical encoding of low-level features into sound. The paper simply argues that any visual perception can be achieved through hearing needs to be reinforced or enhanced by techniques that lie beyond mere visual-to-audio mapping (e.g. computer vision, image processing).

Findings

Experiments reported in this paper reveal that the See ColOr is learnable and functional, and provides easy interaction. In moderate time, participants were enabled to grasp visual information of the world out of which they could derive: spatial awareness, ability to find someone, location of daily objects and skill to walk safely avoiding obstacles. The encouraging results open a door toward autonomous mobility of the blind.

Originality/value

The paper uses the “extended” approach to introduce and justify that the system is brand new, as well as the experimental studies on computer-vision extension of SSDs that are presented. Also, this is the first paper reporting on a terminated, integrated and functional system.

Details

Journal of Assistive Technologies, vol. 8 no. 2
Type: Research Article
ISSN: 1754-9450

Keywords

Article
Publication date: 1 March 2006

Juan Gomez, Minghui Lin and Cemal Basaran

The problem of concurrent thermal and vibration loading has not been thoroughly studied even though it is common in electronic packaging applications. Here we attempt to address…

Abstract

The problem of concurrent thermal and vibration loading has not been thoroughly studied even though it is common in electronic packaging applications. Here we attempt to address such a problem using a damage mechanics based constitutive model. Damage mechanics constitutive model for eutectic Pb/Sn solder alloys is used to simulate the damage effects of concurrent cyclic thermal loads and vibrations on Ball Grid Array (BGA) packages. The model is implemented into the commercial finite element code ABAQUS through its user defined material subroutine capability. For the integration algorithm we have used a return mapping scheme, which dramatically improves the convergency rate as compared to previous implementations of the same model. Results are examined in terms of accumulation of plastic strain within the solder connections. It is shown that the simplistic Miner’s rule can not accurately account for the combined effect of both loadings acting concurrently.

Details

Multidiscipline Modeling in Materials and Structures, vol. 2 no. 3
Type: Research Article
ISSN: 1573-6105

Keywords

Article
Publication date: 7 October 2021

Juan David Peláez-León and Gregorio Sánchez-Marín

This study analyses whether human resource management (HRM), through the use of four sets of high-performance work policies (HPWPs) (i.e. selection, training, motivation and…

Abstract

Purpose

This study analyses whether human resource management (HRM), through the use of four sets of high-performance work policies (HPWPs) (i.e. selection, training, motivation and opportunity policies), mediates the relationship between socioemotional wealth (SEW)—defined as a unique set of nonfinancial family goals—and firm financial performance when family firms face a high-risk context.

Design/methodology/approach

Hypotheses were statistically tested using a structural equation modeling (SEM) methodology with a cross-sectional sample of 196 medium-sized and private family firms in a high-risk context in Spain.

Findings

The results indicate that the relationship between SEW and financial performance in family firms is fully mediated by the use of HPWPs, especially by training and motivation HR policies. The importance given to preserving SEW influences the use of four sets of HPWPs when family firms show clear evidence of being confronted by a financial decline (i.e. a high-risk context). However, to improve their financial results to avoid the firm's failure and thus the loss of their SEW, only those HR policies that focus on training and motivation made a significant and positive contribution to the firm financial performance.

Originality/value

This study contributes to the literature on family firms and HRM by adopting an alternative theoretical framework to understand how the importance of nonfinancial family goals may affect employee structures and management policies, thereby improving financial performance in family firms.

Details

International Journal of Entrepreneurial Behavior & Research, vol. 28 no. 1
Type: Research Article
ISSN: 1355-2554

Keywords

Open Access
Article
Publication date: 22 February 2024

Juan A. Sanchis Llopis, Juan A. Mañez and Andrés Mauricio Gómez-Sánchez

This paper aims to examine the interrelation between two innovating strategies (product and process) on total factor productivity (TFP) growth and the dynamic linkages between…

Abstract

Purpose

This paper aims to examine the interrelation between two innovating strategies (product and process) on total factor productivity (TFP) growth and the dynamic linkages between these strategies, for Colombia. The authors first explore whether ex ante more productive firms are those that introduce innovations (the self-selection hypothesis) and if the introduction of innovations boosts TFP growth (the returns-to-innovation hypothesis). Second, the authors study the firm’s joint dynamic decision to implement process and/or product innovations. The authors use Colombian manufacturing data from the Annual Manufacturing and the Technological Development and Innovation Surveys.

Design/methodology/approach

This study uses a four-stage procedure. First, the authors estimate TFP using a modified version of Olley and Pakes (1996) and Levinsohn and Petrin (2003), proposed by De Loecker (2010), that implements an endogenous Markov process where past firm innovations are endogenized. This TFP would be estimated by GMM, Wooldridge (2009). Second, the authors use multivariate discrete choice models to test the self-selection hypothesis. Third, the authors explore, using multi-value treatment evaluation techniques, the life span of the impact of innovations on productivity growth (returns to innovation hypothesis). Fourth, the authors analyse the joint likelihood of implementing process and product innovations using dynamic panel data bivariate probit models.

Findings

The investigation reveals that the self-selection effect is notably more pronounced in the adoption of process innovations only, as opposed to the adoption of product innovations only or the simultaneous adoption of both process and product innovations. Moreover, our results uncover distinct temporal patterns concerning innovation returns. Specifically, process innovations yield immediate benefits, whereas implementing both product innovations only and jointly process and product innovations exhibit significant, albeit delayed, advantages. Finally, the analysis confirms the existence of dynamic interconnections between the adoption of process and product innovations.

Originality/value

The contribution of this work to the literature is manifold. First, the authors thoroughly investigate the relationship between the implementation of process and product innovations and productivity for Colombian manufacturing explicitly recognising that firms’ decisions of adopting product and process innovations are very likely interrelated. Therefore, the authors start exploring the self-selection and the returns to innovation hypotheses accounting for the fact that firms might implement process innovations only, product innovations only and both process and product innovations. In the analysis of the returns of innovation, the fact that firms may choose among a menu of three innovation strategies implies the use of evaluation methods for multi-value treatments. Second, the authors study the dynamic inter-linkages between the decisions to implement process and/or product innovations, that remains under studied, at least for emerging economies. Third, the estimation of TFP is performed using an endogenous Markov process, where past firms’ innovations are endogenized.

Details

Applied Economic Analysis, vol. 32 no. 94
Type: Research Article
ISSN: 2632-7627

Keywords

Book part
Publication date: 1 November 2012

Raúl Alberto Mora, Juan Diego Martínez, Liliana Alzate-Pérez, Raúl Gómez-Yepes and Laura Mildrey Zapata-Monsalve

This chapter presents the results of the collective experience of two professors and three students in implementing WebQuests in a preservice English education component. The…

Abstract

This chapter presents the results of the collective experience of two professors and three students in implementing WebQuests in a preservice English education component. The first part of the chapter provided a definition of WebQuests, situating this particular proposal within the literature on second language education and the Colombian and Latin American contexts. The authors found that the paucity of studies on designing WebQuests, specifically in Latin America, became one of the strengths of their work. The next section situated how implementing WebQuests in this preservice program enabled an expansion of the actual conceptual framework that is currently in place for WebQuests by adding ideas about competences and socio-cultural and critical thinking theories. However, there is an explanation about how WebQuests became a very feasible alternative to respond to the curricular demands of their institution. Next, the authors shared a multi-vocal account, from every author's vantage point, of how they carried out their work with WebQuests. This implementation process generated a series of changes in the way students saw themselves as learners and future teachers, gaining more ownership of the idea of WebQuests beyond a semester assignment. The instructors, as the result of their work, are now thinking of better ways to redefine how they use WebQuests and how they will get their other cohorts involved in collaborative academic efforts. This chapter is, then, not only an account of an experience, but an invitation to think about how to expand the boundaries of preservice teacher education through technological mediation.

Details

Increasing Student Engagement and Retention Using Online Learning Activities
Type: Book
ISBN: 978-1-78190-236-3

Keywords

Book part
Publication date: 5 May 2017

Bartosz Sawik, Javier Faulin and Elena Pérez-Bernabeu

The purpose of this chapter is to solve multi-objective formulation for traveling salesman and transportation problems. Computations are based on real data for the road freight…

Abstract

The purpose of this chapter is to solve multi-objective formulation for traveling salesman and transportation problems. Computations are based on real data for the road freight transportation of a Spanish company. The company was selected because of its importance in Spanish economy and market. This company is important in the whole country; however, it has its higher importance in the northern part of Spain. The requirements for these models are the minimization of total distance and the CO2 emissions. To achieve this, it is required to know and carry out the minimization of the total distance traveled by the trucks during the deliveries. The deliveries are going to be executed between the different locations, nodes, in the region, and Elorrio, where the depot is situated. The data have been used to decide the best route in order to obtain a minimization of cost for the company. As it was mentioned earlier, the problems are focused on the reduction of the amount of CO2 emissions and minimization of total distance; by studying different parameters, the best solutions of route transportation have been obtained. The software used to solve these models is CPLEX solver with AMPL programming language.

Book part
Publication date: 5 May 2017

Bartosz Sawik, Javier Faulin and Elena Pérez-Bernabeu

The purpose of this chapter is to optimize multi-criteria formulation for green vehicle routing problems by mixed integer programming. This research is about the road freight…

Abstract

The purpose of this chapter is to optimize multi-criteria formulation for green vehicle routing problems by mixed integer programming. This research is about the road freight transportation of a Spanish company of groceries. This company has more power in the north of Spain and hence it was founded there. The data used for the computational experiments are focused in the northern region of Spain. The data have been used to decide the best route in order to obtain a minimization of costs for the company. The problem focused on the distance traveled and the altitude difference; by studying these parameters, the best solution of route transportation has been made. The software used to solve this model is CPLEX solver with AMPL programming language. This has been helpful to obtain the results for the research and some conclusions have been obtained from them.

Details

Applications of Management Science
Type: Book
ISBN: 978-1-78714-282-4

Keywords

Article
Publication date: 2 April 2024

Virginia Lasio, Juan M. Gómez, John Rosso and Alejandro Sánchez

The research aims to investigate how digital transformation (DT), entrepreneurial orientation (EO) and socioemotional wealth (SEW) impact the financial performance of family firms…

Abstract

Purpose

The research aims to investigate how digital transformation (DT), entrepreneurial orientation (EO) and socioemotional wealth (SEW) impact the financial performance of family firms in uncertain business environments. Drawing from existing literature, we propose that DT and EO drive firm performance. Additionally, we suggest a new role for SEW, which positively moderates this relationship in family firms, especially in terms of risk behavior and innovation for survival.

Design/methodology/approach

We used the STEP Consortium’s 2020–2021 database, derived from a global survey that explored how family businesses responded to environmental shocks. Following STEP’s definitions, we proposed three hypotheses and tested two models using structural equation modeling.

Findings

The findings show that EO significantly enhances the impact of DT on family firm performance. Family businesses exhibit a notable willingness to take strategic venture risks to protect their SEW. These findings align with conclusions drawn in related literature, supporting all hypothesized relationships proposed.

Practical implications

The study has made an applied contribution by challenging the misconception that family firms are outdated and provides insights into supporting their approach to entrepreneurship, innovation and transgenerational entrepreneurship. Furthermore, it provides business families and consultants with a new view of SEW as a strategic asset.

Originality/value

Our study adds to the literature by showing how entrepreneurial orientation catalyzes the positive impact of digital transformation on firm financial performance. We also highlight the contextual influence on family firm decision-makers' risk propensity, which affects SEW development and firm outcomes. This context dependency of SEW can hinder or enhance performance, offering new research and support avenues for family firms.

Details

Journal of Family Business Management, vol. ahead-of-print no. ahead-of-print
Type: Research Article
ISSN: 2043-6238

Keywords

Article
Publication date: 18 July 2019

Fernando E. García-Muiña, Laura Fuentes-Moraleda, Trinidad Vacas-Guerrero and Juan José Rienda-Gómez

The hostile environments in which museums operate force them to be innovative. Most of them have fewer resources and are publicly owned. Because these factors may hinder their…

1286

Abstract

Purpose

The hostile environments in which museums operate force them to be innovative. Most of them have fewer resources and are publicly owned. Because these factors may hinder their innovative potential, this paper aims to propose an open innovation model adapted to this type of organization to improve visitors’ experience.

Design/methodology/approach

A qualitative method based on a thematic analysis is carried out. Data sources are: (i) focus group with stakeholders from the destination and (ii) in-depth interviews with museums experts.

Findings

This new framework is important because it brings something new to a field that previous research had barely considered. The study of the implementation of open innovation in publicly owned small and medium-sized museums brings to light the growing importance of the relational, organizational, technological and experiential dimensions, their interactions and their main constituent factors.

Research limitations/implications

The study is limited to a specific type of institution, and results should not be extrapolated to other contexts. The construct of open innovation is highly complex, and that advises future research to include other players. Quantitative methods and longitudinal techniques will contribute to tackling new challenges in future research works.

Practical implications

Results are helpful for museum managers and policymakers. Stakeholders improve their comprehension of how an open innovation model works because the paper offers a few guidelines for its active designing. A solid networking based on trust and the emphasis on improving the visitor experience determine making-decision processes.

Originality/value

The paper provides a systemic innovation management model for museums, where there is almost no previous research. It is theoretically supported in the open innovation paradigm, as well as the absorptive capacity framework. The emerging and central role of the experiential dimension constitutes another notable contribution to literature.

Details

International Journal of Contemporary Hospitality Management, vol. 31 no. 11
Type: Research Article
ISSN: 0959-6119

Keywords

Article
Publication date: 16 January 2024

Juan M. Gómez and Yeny E. Rodríguez

This study aims to unveil the impact of strategic renewal and its implications on employment during the COVID-19 pandemic. It explores the role of strategic renewal in mitigating…

Abstract

Purpose

This study aims to unveil the impact of strategic renewal and its implications on employment during the COVID-19 pandemic. It explores the role of strategic renewal in mitigating the adverse effects of crises, fostering organizational adaptation and restructuring capabilities. Additionally, it examines the moderating effect of familiness on understanding the strategic renewal process and its importance to family firms during times of crisis.

Design/methodology/approach

The study utilizes data from the STEP Project Global Consortium, which collected information from 3,026 family firms operating in 75 countries and various sectors during the pandemic. Structural Equation Modeling was employed to test the authors' research hypotheses.

Findings

The authors' results reveal that strategic renewal significantly impacted employment growth during the COVID-19 pandemic of family firms. Strategic renewal plays a crucial role in mitigating the negative effects of that crisis on employment by helping firms adapt and restructure their capabilities. The study also found that synergies among family members positively influenced innovation in organizational resilience and enhanced the positive effects of strategic renewal on employment growth.

Originality/value

This study contributes to the literature by emphasizing the importance of strategic renewal of family businesses during the COVID-19 pandemic. It offers insights into mitigating vulnerability risks amidst crises and adds to the understanding of the strategic renewal process and its implications for the organizations. The findings hold theoretical implications for the field of strategic management and provide valuable insights into the unique challenges and opportunities faced by family firms in uncertain environments.

Peer review

The peer review history for this article is available at: https://publons.com/publon/10.1108/IJSE-11-2022-0771

Details

International Journal of Social Economics, vol. ahead-of-print no. ahead-of-print
Type: Research Article
ISSN: 0306-8293

Keywords

1 – 10 of 472