Self-similar transmission properties of aperiodic Cantor potentials in gapped graphene

We investigate the transmission properties of quasiperiodic or aperiodic structures based on graphene arranged according to the Cantor sequence. In particular, we have found self-similar behaviour in the transmission spectra, and most importantly, we have calculated the scalability of the spectra. To do this, we implement and propose scaling rules for each one of the fundamental parameters: generation number, height of the barriers and length of the system. With this in mind we have been able to reproduce the reference transmission spectrum, applying the appropriate scaling rule, by means of the scaled transmission spectrum. These scaling rules are valid for both normal and oblique incidence, and as far as we can see the basic ingredients to obtain self-similar characteristics are: relativistic Dirac electrons, a self-similar structure and the non-conservation of the pseudo-spin. This constitutes a reduction of the number of conditions needed to observe self-similarity in graphene-based structures, see D\'iaz-Guerrero et al. [D. S. D\'iaz-Guerrero, L. M. Gaggero-Sager, I. Rodr\'iguez-Vargas, and G. G. Naumis, arXiv:1503.03412v1, 2015]

The group of strong Galois objects associated to a cocommutative Hopf quasigroup

Let H be a cocommutative faithfully flat Hopf quasigroup in a strict symmetric monoidal category with equalizers. In this paper we introduce the notion of (strong) Galois H-object and we prove that the set of isomorphism classes of (strong) Galois H-objects is a (group) monoid which coincides, in the Hopf algebra setting, with the Galois group of H-Galois objects introduced by Chase and Sweedler

Territorio en mutación: la industria textil-confección como factor de desarrollo local en Galicia

Textile and clothing industries have seen in Galicia a very important growth process during the last decades. This activity is located in a specific way in certain places and spaces, where local productive systems are configurated, while in the other ones their presence is weaker. Another characteristic of the sector is the contrast between two manegerial models: one linked to the multinational group Inditex, and the other one associated to a group of smaller companies, but showing great competitive ability in the quality segments linked to design. Both have decentralized a significative part of their productive process to a wide net of co-operatives and little workrooms, mainly located in rural areas. The current analysis presents as objectives: to present the managerial strategies of both existing productive models, to individualize those socioeconomic and territorial factors which have contributed to the development of the activity, to identify the main territorial implications that the sector has caused in those places where their presence is more significant.La industria textil y de la confección ha experimentado en Galicia un muy notable proceso de expansión en las últimas décadas. Esta actividad se localiza de modo específico en determinadas localidades y espacios, donde se configuran sistemas productivos locales, mientras en el resto su presencia es más débil. Otra de las características del sector es el contraste existente entre dos modelos empresariales: el vinculado al grupo multinacional Inditex y aquel asociado a un grupo de empresas de menor entidad, pero de gran capacidad competitiva en los segmentos de calidad asociados al diseño. El presente análisis presenta como objetivos: presentar las estrategias empresariales de los dos modelos productivos existentes, individualizar aquellos factores de carácter socioeconómico y territorial que han favorecido el desarrollo de la actividad e identificar las principales implicaciones territoriales que el sector ha generado en aquellas localidades donde su presencia es más significativ

Nascent entrepreneurship: A critical perspective and research agenda in tourism and hospitality

Purpose – This study aims to systematize the drivers of nascent entrepreneurship in tourism and to suggest avenues for future research. As a consequence of the pandemic, a reduction in early-stage entrepreneurial activity was reported worldwide. The countries that responded best to this situation were those that fostered entrepreneurship at this early stage, designated as nascent. Hence, research on nascent entrepreneurs requires particular attention. Design/methodology/approach – To address this study’s goal, the authors have examined the development of nascent entrepreneur literature in the last two decades and discussed how the literature on tourism nascent entrepreneurship relates to the mainstream literature in terms of theoretical frameworks. The authors explored specificities of the tourism industry to propose new research avenues to explore the theme of new venture creation in the hospitality and tourism sector. Findings – The authors divided the implication of tourism specificities into main themes: motivations, human and social capital and government and incubators. Several research questions for future research are proposed. Practical implications – By focusing on nascent entrepreneurship, researchers and policymakers can obtain important insights from projects that have not been implemented, going beyond those that have been successfully undertaken, as aimed at in entrepreneurship research. Originality/value – This research contributes to the nascent tourism entrepreneurship literature by providing theoretical and empirical research questions to advance existing knowledge in tourism nascent entrepreneurship.info:eu-repo/semantics/publishedVersio

Retaining tourism lifestyle entrepreneurs for destination competitiveness

Due to their representativeness in the universe of tourism businesses and the potential to generate innovation, tourism lifestyle entrepreneurs (TLEs) play an essential role in the competitiveness of tourism destinations. Despite this vital importance, the antecedents of innovation generated by these entrepreneurs and their willingness to stay at the destination are still under-explored. Findings from a survey of 178 TLEs indicate that the context influences community attachment, and affects indirectly innovation and willingness to stay. Community attachment has a positive influence on entrepreneurial self-efficacy, innovation and willingness to stay. A transition of the context results to developing economies was also taken into consideration. Theoretical and practical implications are discussed.info:eu-repo/semantics/acceptedVersio