Search results

The purpose of this paper is to present topological derivatives-based reconstruction algorithms to solve an inverse scattering problem for penetrable obstacles.

The method consists in rewriting the inverse reconstruction problem as a topology optimization problem and then to use the concept of topological derivatives to seek a higher-order asymptotic expansion for the topologically perturbed cost functional. Such expansion is truncated and then minimized with respect to the parameters under consideration, which leads to noniterative second-order reconstruction algorithms.

In this paper, the authors develop two different classes of noniterative second-order reconstruction algorithms that are able to accurately recover the unknown penetrable obstacles from partial measurements of a field generated by incident waves.

The current paper is a pioneer work in developing a reconstruction method entirely based on topological derivatives for solving an inverse scattering problem with penetrable obstacles. Both algorithms proposed here are able to return the number, location and size of multiple hidden and unknown obstacles in just one step. In summary, the main features of these algorithms lie in the fact that they are noniterative and thus, very robust with respect to noisy data as well as independent of initial guesses.

Based on Latour’s view that humans and non-humans swap properties, this paper explores whether objects embody similar properties as human beings and whether these properties per se orient dispossession practices.

This study adopts Latour’s pragmatogonies as a theoretical perspective to explore the complex interplay between humans and non-humans in the context of dispossession. Thirty-two in-depth interviews focus on the object itself (its characteristics, qualities, and capacities in association with its endo and exo relations) to understand how objects act on dispossession.

The results depict objects as consisting of various material elements and possessing symmetrical properties as humans to facilitate, hinder, and channel dispossession. Objects emerge as having genealogies, undergoing physical changes, adapting to misfortunes, and having citizenship duties.

Our analyses reveal a complex network of people and things; all acting in the course of dispossession. We call for further research on object–subject networks/assemblages as dynamic and co-productive. We suggest that research focus should be on what objects might become or how they connect and evolve as they deteriorate, shift, and renew in interaction with their environment.

Our study challenges the dichotomy between material objects and human beings. We underline that objects are not ephemeral and transient but they are moving and circulating as they deteriorate, transform, enact new roles, and construct evolving identities.

This chapter aims to reflect upon the relationship between corporate social responsibility (CSR) and human rights. We argue that although CSR is a good attempt to propose better practices for managerial decisions, a human rights perspective enriches this vision. Therefore, the authors will define the meaning of a human rights perspective for business activities and, specifically, for CSR. The authors apply the idea of res extra commercium to human rights and CSR. As a first step, both factors need to be identified as moral absolutes. Essentially, businesses should start by identifying areas of human activity that are off limits.

Despite the boom corporate social responsibility (CSR) and sustainability are enjoying nowadays in the agendas of both small and big companies, we still have difficulties in providing a clear definition of the concept of sustainability. There is no consensus on the criteria to be used to define and enhance responsible management that creates sustainable development.

After a systematic revision of the literature, authors have been mapping the limits of the research already done at different levels, dimensions, and horizons, so we do have a 360° map of the research on sustainability. Future developments are also explored to enrich and align the diverse approaches demanded to define this wide, complex, and by now, equivocal concept and the conclusions reveal the many gaps not yet covered in the research field, signposting key issues for further work.

Existing studies are scarce, especially on the Industry 4.0 application to firms' innovation and competitiveness, and even more on the application to LATAM and Spanish SMEs. This paper tries to fill this gap by explaining the results of applying a systematic model, to understand which are the SMEs' strengths and weaknesses in relation to the Industry 4.0 transformation.

A systematic methodology involving documentation analysis, visits to the companies, interviews with employees and managers, making a preliminary diagnosis, crossing their needs with the enablers that can apply. The fieldwork was carried out during a two month period (2019), on a target sample of 22 SMEs operating under industrial productive activity already exporting or planning their internationalization toward LATAM regions.

There are relevant barriers that need to be overcome in order to enter Industry 4.0 and, in this specific analysis, the following major classification was obtained: (1) Technological barrier, (2) Training barrier, (3) Economic barrier and (4) Contextual barrier.

This paper provides new insights and sets a starting point regarding LATAM and Spanish’ Industry 4.0 situation, while contributing to the SMEs competitiveness by providing deeper understanding of the barriers and limitations in adopting Industry 4.0, pointing out some implications and suggestions for organizations to implement.

Los estudios existentes son escasos, especialmente sobre la aplicación de la Industria 4.0 a la innovación y competitividad de las empresas, y más aún sobre la aplicación a las PYMEs de LATAM y españolas. Este trabajo trata de llenar este vacío explicando los resultados de un modelo sistemático, para entender cuáles son sus fortalezas y debilidades en la transformación hacía la Industria 4.0.

Este modelo sistemático involucra el análisis de documentación, visitas a las empresas, entrevistas con empleados y directivos, realizando un diagnóstico previo, cruzando sus necesidades con los habilitadores que pueden aplicar. El trabajo de campo se ha realizado durante un periodo de dos meses (2019), sobre una muestra potencial de 22 PYMEs que operan bajo actividad productiva industrial y que ya exportan o planean su internacionalización hacia las regiones de LATAM.

Existen barreras relevantes que deben ser superadas para implementar la Industria 4.0 y, en este análisis específico, se identificaron: (1) Barreras tecnológicas; (2) Barreras formativas; (3) Barreras económicas; y (4) Barreras contextuales.

Este trabajo proporciona nuevas perspectivas y establece un punto de partida sobre la situación de la Industria 4.0 en las PYMEs LATAM y españolas, apoyando la competitividad al proporcionar una comprensión más profunda de las barreras y limitaciones en su implementación, al tiempo que señala algunas implicaciones y sugerencias para las organizaciones a implementar.

This cross-sectional online survey in Oman in April 2021 aimed to assess university students' resilience, stress levels and meaning during the COVID-19 pandemic and identify characteristic profiles.

A cross-sectional survey design was used to collect data from full-time students at one University in Oman. Outcomes included sociodemographic information, the brief resilience scale, the perceived stress scale-4 and the meaning in life questionnaire to explore the students' profiles.

A total of 964 students participated (response rate = 34.8%), of which 35% had low resilience scores. The average perceived stress, presence of meaning in life and search for meaning in life scores were 7.9 ± 2.3, 24.2 ± 6.9 and 24.9 ± 7.7, respectively. Cluster analysis identified three groups: low-risk and fewer impacts (cluster A, n = 503, 523%), moderate-risk and moderate impacts (cluster B, n = 160, 16.6%) and high-risk and more impacts (cluster C, n = 301, 31.2%). Cluster C students experienced more psychological problems and were at high risk during the pandemic.

The respondents' honesty is a possible error that could influence the results. Low response rates limit its generalizability, and cause-effect relationships among mental health outcomes cannot be discerned.

This study identified three distinct groups of students, each with different levels of severity in their health problems. There is an increased need for education and counseling to support students during this period, and university management should focus on implementing personal precautionary measures and providing high-tech, user-friendly platforms for students to enhance their learning.

These findings suggest that tailored strategies should be developed to address the unique psychological needs of each group. The study provides important information for university management to understand the pandemic's psychological impact on students and develop effective interventions to support their well-being.

The purpose of this study resolved to evidence worldwide studies addressing the effects of the global COVID-19 pandemic on higher education (HE) academic staff. Particularly in relation to wellbeing and pedagogical role, as part of a parallel study exploring the impact of COVID-19 on academics’ pastoral role.

The systematized review identified eight relevant studies that shed light on the impacts of the COVID-19 pandemic on university academics’ well-being.

The review highlights the paucity of research in this area, with no studies, at the time of the review, considering how academics responded to a broadening of their pastoral role amidst an evolving academic landscape, and how are universities supporting them.

Firstly, only eight relevant studies were included, affecting generalisability of results owing to uneven distribution between geographic regions. Secondly, participants across the eight studies accounted for less than 0.05% of a population of 6 million university academics worldwide (Price, 2011). Thirdly, most of the studies used cross-sectional design, limiting assessment of the longer-term impact of an evolving HE landscape.

The findings of this systematized review can be placed in the context of illuminating research deficits within a shifting HE landscape. Specifically, no studies that the authors are aware of have investigated how academics are responding to a broadening of their pastoral role amidst an evolving academic landscape, and how are universities supporting them.

In providing pastoral support to students, the mental well-being of academics is frequently ignored (Urbina-Garcia, 2020). The provision of well-being support by university management for academics appears to be “limited to non-existent” (Hughes et al., 2018, p. 49). Critically, the Coronavirus pandemic appears to have both accelerated and precipitated a step-change to pastoral care within the HE teaching ecosystem. The impact of a broadening pastoral role on academics' well-being has yet to be fully realized and understood. The authors have subsequently conducted an empirical study to address this embryonic area of research.

This study aims to develop a perception scale of gender role in disaster management and examine related factors.

A total of 1,167 individuals were reached in the main trial. Exploratory and confirmatory factor analyses were applied to test the validity of the final scale form, respectively.

The scale was developed as unidimensional with two positive items and 17 negative items. The mean scores of the participants were in the positive perception group. The 19-item model is a reliable and valid instrument for measuring the perception of gender role specific to disaster management.

Determining the perceptions of the people will guide the policies related to gender equity and equality and activities to be carried out in the disaster management field. This tool can be used to raise awareness related to gender perceptions in the disaster preparedness activities.

The “Perception Scale of Gender Role in Disaster Management” which is a reliable and robust tool to determine the perception of gender role specific to the disaster management was developed in this study. This tool can contribute to address the needs and capacities and provide influencive strategy development through gender analysis.

The purpose of this paper is to analyze if the composition and activity of the appointment and remuneration committee have a significant effect in the remunerations of the members of the board of directors.

To achieve the paper's objective the authors proposed four hypotheses in order to analyze the repercussions of independent, institutional and executive directors in the Appointment and Retribution Committee (ARC) and its activity in the directors’ remunerations.

The results put into evidence that the composition (independent, institutional and executive members) of the ARC is not associated with the variation of the directors remuneration mean, while the activity of the ARC influences positively this remuneration mean, contrary to what was expected.

The ARC in Spain is not effective in fixating the directors’ remunerations.

El objetivo de este artículo es analizar si la configuración y actividad de las comisiones de nombramientos y remuneraciones (CNR) tienen un efecto significativo en las remuneraciones de los miembros del consejo de administración.

Para alcanzar el objetivo del artículo hemos planteado cuatro hipótesis con la finalidad de analizar la repercusión de los consejeros independientes, dominicales y ejecutivos de las CNR y la actividad de las mismas en las remuneraciones de los consejeros.

Los resultados ponen de manifiesto que la composición (miembros independientes, dominicales y ejecutivos) de las CNR no se asocian con la variación de las remuneraciones medias de los consejeros, mientras que la actividad de las CNR influye de manera positiva, contrario a lo pronosticado, en las variaciones de las retribuciones medias de los consejeros.

Las CNR en España no son efectivas en la fijación de las retribuciones de los consejeros.

The purpose of this paper is to investigate the interdependence between economic policy uncertainty (EPU) and business cycles within and among six emerging market economies (EMEs) from January 1999 to December 2018.

This study adopts the wavelet multiple correlations and wavelet multiple cross-correlation (WMCC) based on the maximal overlap discrete transform estimator. This methodology simultaneously investigates how two or more time series variables move together continuously at both time and frequency domains.

The empirical results show that business cycles comove with EPU for both intra- and inter-country analysis, with the long term showing the greatest degree of interdependence. In intra-country comparisons, EPU has a positive correlation with consumer price index and a negative correlation with share price index. According to the WMCC results, EPU does not have any leading or lagging power within each EME, but rather import has both lead and lag power. The inter-country WMCC results are all significant, with Korea’s EPU leading/following all EMEs across all scales.

This study contributes to the ongoing debate about what causes business cycles to comove by investigating business cycle indicators (leader/follower) using a robust wavelet methodology. The authors propose new variables that can clearly reflect the outcome of economic policy actions and translate information about EPU shocks. The inclusion of the variables has altered the understanding of the relationship between EPU and business cycle fluctuations. Policymakers also gain new insights into the trends and patterns of EPU and business cycles, which will help them formulate and implement fiscal and monetary policies more effectively.