Valley-Polarized Quantum Transport Generated by Gauge Fields in Graphene

We report on the possibility to simultaneously generate in graphene a {\it bulk valley-polarized dissipative transport} and a {\it quantum valley Hall effect} by combining strain-induced gauge fields and real magnetic fields. Such unique phenomenon results from a resonance/anti-resonance effect driven by the superposition/cancellation of superimposed gauge fields which differently affect time reversal symmetry. The onset of a valley-polarized Hall current concomitant to a dissipative valley-polarized current flow in the opposite valley is revealed by a $e^2/h$ Hall conductivity plateau. We employ efficient linear scaling Kubo transport methods combined with a valley projection scheme to access valley-dependent conductivities and show that the results are robust against disorder.Comment: 2D Materials (accepted for publication

Material freedom, citizenship and democracy: the case for Universal Basic Income in post-political societies

Abstract. Under neoliberalism, the political relevance of citizens has been eroded according to a managerial conception of the state and society. As Jacques Rancière mentions, this is a condition of the current “post-political” time. In this context, UBI has appeared as a means to regain the political signification of individual attending to their material necessities and looking forward to avoiding an increasing level of precarity. However, UBI poses some processual and intrinsic problematizations affecting its emancipatory character resulting in exclusionary social, economic and political attitudes. Thus, this article will analyze the role of UBI in recovering the categories of citizen and democracy and the main problems its implementation would face. This research wants to show that, paradoxically, UBI can provide a substantial improvement for those social groups in risk of exclusion such as immigrants, women or precarious workers.Keywords: Universal Basic Income, post-politics, neoliberalism, political rationality, democracy

¿Existe alguna relación entre la capacidad de movimiento funcional y el estado ponderal? Un estudio en escolares españoles

Indexación: Scopus.Background: to examine relations between functional movement patterns and weight status in Spanish primary school children and to determine the differences between sexes. Methods: three hundred and thirty-three, 6-13 years old children (164 boys and 169 girls), participated in this study. The main outcome measures were the body mass index (BMI) and the Functional Movement Screen™ (FMS). Children were classified as normal weight (NW), overweight (OV) or obese (OB) according to international cut-offs. Results: total FMS score was negatively correlated with BMI (p < 0.001). FMS score was different between children from NW, OV and OB groups (p = 0.001), lower with the increased BMI (p < 0.001 between all groups). Significant differences (p < 0.05) between NW, OV and OB were found in deep squat, hurdle step, in-line lunge, shoulder mobility, straight leg-raise and push-up tests. As for the sex differences, girls obtained higher scores (p < 0.05) in in-line lunge, shoulder mobility and straight leg-raise, whereas boys did it in push-up (p = 0.044) test. Conclusions: these results confirm that total FMS score significantly and inversely correlates with BMI in a group of 333 school-age children. As for the sex differences, girls outperform boys in movements requiring flexibility and balance, whilst boys outperform girls in tests where muscular strength is required. © 2018 SENPE and Arán Ediciones S.L.Introducción: examinar la relación entre los patrones de movimiento funcional y el estado ponderal en escolares españoles, determinando también la infl uencia de la variable sexo. Métodos: trescientos treinta y tres niños de 6-13 años de edad (164 niños y 169 niñas), participaron voluntariamente en este estudio. Las variables objeto de estudio fueron el índice de masa corporal (IMC) y la batería de test Functional Movement ScreenTM (FMS). Los niños fueron clasifi cados como normopeso (NW), sobrepeso (OV) y obesos (OB) de acuerdo con los puntos de corte internacionales. Resultados: la puntuación total en el FMS correlacionó de forma negativa y signifi cativa con el IMC (p < 0,001). La puntuación en FMS fue diferente entre las categorías de peso (p = 0,001), hallando un peor rendimiento en FMS conforme aumenta el IMC (p < 0,001 entre todos los grupos). Se hallaron diferencias signifi cativas (p < 0,05) entre NW, OV y OB en los test de deep squat, hurdle step, in-line lunge, shoulder mobility, straight leg-raise and push-up. En cuanto a las diferencias por sexo, las chicas obtuvieron puntuaciones más altas en FMS (p < 0,05) en los test in-line lunge, shoulder mobility and straight leg-raise; mientras los chicos obtuvieron puntuaciones superiores en el test de push-up (p = 0,044). Conclusiones: los resultados confi rman que la puntuación total en el FMS correlaciona signifi cativa y negativamente con el IMC en este grupo de 333 escolares. En cuanto a la infl uencia del sexo, las chicas obtuvieron mayor puntuación que los chicos en los test que requerían fl exibilidad y equilibrio, mientras los chicos fueron superiores en los test en los que predominaba la fuerza muscular.https://www.nutricionhospitalaria.org/index.php/articles/01670/show#

Real-space Calculation of Orbital Hall Responses in Disordered Materials

We developed an efficient numerical approach to compute the different components of the orbital Hall responses in disordered materials from the Berry phase theory of magnetization. We propose a theoretical framework based on the Chebyshev expansion of Green's functions and the position operator for systems under arbitrary boundary conditions. The capability of this scheme is illustrated by computing the orbital Hall conductivity for gapped graphene and Haldane model in the presence of nonperturbative disorder effects. This methodology opens the door to realistic simulations of orbital Hall responses in arbitrary complex models of disordered materials

Emerging Spin-Orbit Torques in Low Dimensional Dirac Materials

We report a theoretical description of novel spin-orbit torque components emerging in two-dimensional Dirac materials with broken inversion symmetry. In contrast to usual metallic interfaces where field-like and damping-like torque components are competing, we find that an intrinsic damping-like torque which derives from all Fermi-sea electrons can be simultaneously enhanced along with the field-like component. Additionally, hitherto overlooked torque components unique to Dirac materials, emerge from the coupling between spin and pseudospin degrees of freedom. These torques are found to be resilient to disorder and could enhance the magnetic switching performance of nearby magnets

Raza ovina Ansotana II. Caracteres cualitativos externos

La raza ovina Ansotana es originaria del Noroeste de la provincia de Huesca y del Norte de la de Zaragoza. Es una raza considerada en peligro de extinción con un censo de 3400 animales. Se han obtenido un total de 31 variables cualitativas correspondientes a las regiones de la cabeza, tronco, mamas y extremidades, así como caracteres de índole faneróptica relativos al color de la capa y piel. Los ani- males controlados han sido 87 reproductores, 77 hembras y 10 machos, localizados en un total de 6 explotaciones. La instauración de un plan de conservación y fomento pasa, previamente, por una ca- racterización que analice el grado de diversidad inicial. La raza Asotana se encuentra en un estado de conservación complicado debido a su reducido censo, necesitando seguir aplicando los criterios de se- lección actual para que no se produzcan grandes variaciones con respecto al Estándar racial actual.The Ansotana breed is original from N.W province of Huesca and N. of Zaragoza.The current popula- tion of this endangered breed is 3400 animals. Thirty one qualitative characters were obtained from the head, body, mammals and limbs regions, as well as to faneroptic characters relatives to the coat colour and skin. Eighty-seven animals were controlled, 77 adult females and 10 adult males on 6 dif- ferent flocks. The establishment of a conservation planning passes previously by a characterisation that analyses the departure diversity degree

Ansotana sheep breed I. Morphostructural characters

La raza ovina Ansotana es originaria del Noroeste de la provincia de Huesca y Norte de la de Zaragoza. En la actualidad cuenta con un censo de unos 3.400 animales inscritos en el Libro Genealógico. Se han obtenido 17 medidas zoométricas en 77 hembras y 10 machos adultos procedentes de 6 rebaños que permiten deducir que es una raza de proporciones brevilíneas, con una clara tendencia de la me- socefalia a la dolicocefalía, más acusada en las hembras, y con predominio de extremidades muy cortas en relación a la altura del animal. En general, tanto los machos como las hembras presentan una mediana homogeneidad morfoestructural en casi todas las variables. En cuanto al grado de armonía, en las hembras puede catalogarse como medio y en los machos se observa baja armonía, lo que indica que sería importante aunar los criterios de selección.The Ansotana breed is original from N.W province of Huesca and N. of Zaragoza. The current popula- tion is 3.400 animals, which are entered in the genealogical register. Seventeen zoometrical measure- ments were obtained from 77 ewes and 10 rams from 6 different flocks. The results show that this breed has brevilineous proportions and tends to dolicocefalous, especially females, with predomi- nance of short limbs respect to the height. Overall, females and males show a medium level of homo- geneity in the majority of morphometric variables. The degree of harmony is medium in ewes and low in the rams, suggesting that all selection criteria should be combined in the same morphostructural model

O conceito do Baby Café como rede internacional de apoio à amamentação materna

El objetivo general de este trabajo consiste, en reflexionar sobre el fenómeno del Baby Café como recurso novedoso y conveniente dentro del mundo de la promoción, protección y apoyo a la lactancia materna a nivel internacional. El Baby Café es una iniciativa de apoyo a la lactancia materna, que coordina una red internacional de centros en los que se combina el apoyo formal proveniente de los profesionales sanitarios especializados en lactancia y el apoyo informal propio de los grupos o redes de apoyo a la lactancia. Con el fin último de promover proteger y apoyar a la lactancia materna, adentrándonos en la iniciativa del Baby Café y animando a que se realicen más estudios que avalen el verdadero impacto que éste tipo de iniciativas tienen sobre la sociedad; hemos desarrollado, mediante el estado de la cuestión y un diario de campo, un estudio cualitativo, que nos ha permitido explorar el fenómeno del Baby Café en el distrito 10 de Singapur, durante el mes de marzo de 2015.The general objective of this work is to reflect on the phenomenon of The Baby Café as a novel and convenient concept in a world of promotion, protection and support of breastfeeding worldwide. The Baby Café is an initiative to support breastfeeding that coordinates an international network of centers that combines formal support from health professionals who specialize in lactation with informal support groups or networks of breastfeeding. With the ultimate goal of the promotion, protection and support of breastfeeding, the introduction of The Baby Café initiative encourages more studies of such nature to be conducted, eventually demonstrating the true impact of such initiatives on society; we have developed, through the theoretical framework and a field diary, a qualitative study, which has allowed us to explore the phenomenon of the Baby Cafe in the 10th district of Singapore, during the month of March 2015.O objetivo geral deste trabalho consiste em refletir sobre o fenómeno do bebe café como novo e conveniente recurso dentro do mundo da promoção, proteção e apoio a amamentação materna a nível internacional. O bebe café é uma iniciativa de apoio a amamentação materna que coordena uma rede internacional de centros nos quais se combina o apoio formal proveniente dos profissionais sanitários especializados em amamentação, e no apoio informal próprio dos grupos o redes de apoio a amamentação. Com o fim de promover, proteger e apoiar a amamentação materna aprofundando a iniciativa do bebe café e incentivando a que se realizem mais estudos que avaliem o verdadeiro impacto que este tipo de iniciativa tem sobre a sociedade; temos desenvolvido, mediante o estado da questão e um diário de campo, um estudo qualitativo, que nos permitiu explorar o fenómeno do bebe café no distrito de Singapura durante o mês de Março 2015

Adaptaciones metabólicas en vacas lecheras de distintos genotipos holstein bajo dos estrategias de alimentación

El objetivo del trabajo fue profundizar en los mecanismos moleculares relacionados con el metabolismo energético hepático en vacas lecheras Holstein-Friesian de distinto origen genético, sometidas a dos estrategias nutricionales a lo largo de la lactancia. Modelo 1: vacas Holstein-Friesian multíparas sometidas a dos estrategias de alimentación. De los 0 a los 180 días en leche (DEL) las vacas fueron alimentadas con una dieta totalmente mezclada (DTM) ad libitum (G0) o pastorearon Festuca arundinacea o Medicago sativa y fueron suplementadas con concentrado (G1); de los 180 a 250 días todas las vacas pastorearon Festuca arundinacea y fueron suplementadas con una DTM. Modelo 2: vacas Holstein-Friesian de origen genético neozelandés (NZH) o norteamericano (NAH) sometidas a dos estrategias de alimentación, la de máximo pastoreo (MaxP), donde el forraje representó el 67 % del consumo ofrecido (70:30 relación de Medicago sativa y Dactylis glomerata o Festuca arundinacea a forraje conservado) y el 33 % restante se ofreció como concentrado, y la estrategia FixP donde el pastoreo representó el 32 % del consumo ofrecido y el restante se ofreció como DTM. Para el modelo 1 se tomó plasma y biopsias de hígado a los -14, 35, 60, 110, 180 y 250 DEL y para el modelo 2 a los -14, 21, 100 y 180 DEL con el objetivo de caracterizar los perfiles metabólico-endócrinos, la expresión génica de enzimas de las vías metabólicas, la función mitocondrial, los niveles de proteína y las modificaciones postraduccionales. Nuestro trabajo evidenció una disfunción mitocondrial hepática durante la lactancia temprana asociada a los niveles de acetilación de lisinas en proteínas mitocondriales en vacas sometidas a estrategias pastoriles, con una recuperación hacia la lactancia media tardía. Sin embargo, las vacas NAH en la estrategia MaxP no lograron recuperar su función mitocondrial durante la lactancia media tardía y mostraron una más alta expresión de genes asociados a la gluconeogénesis sugiriendo una mayor persistencia que las vacas NZH

Technology: a strategic imperative for successful retailers

This author accepted manuscript is deposited under a Creative Commons Attribution Non-commercial 4.0 International (CC BY-NC) licence. This means that anyone may distribute, adapt, and build upon the work for non-commercial purposes, subject to full attribution. If you wish to use this manuscript for commercial purposes, please contact [email protected]: In the aftermath of the COVID-19 pandemic, technology is rewriting the way consumers shop as well as the retail operating models. In this context, investment in new technologies is a strategic imperative for retailers striving to remain relevant and profitable. Using Kahn's Retail Success Matrix as the conceptual framework, the aim of the study is to propose a classification of emerging technologies based on their potential for sustaining retailers' competitive strategies. Design/methodology/approach: Following an initial qualitative study based on in-depth interviews and focus groups with 20 retail managers, the authors collected survey data from a sample of 168 retail and technology professionals. To achieve the research objectives, content, descriptive and multiple correspondence factor analyses were carried out. Findings: The data analyses result on a map that plots the technological solutions that retail experts identify as enablers of four key competitive strategies: product superiority, enhanced customer experience, frictionless shopping experience and operational excellence. Practical implications: This research work provides valuable insight into how retail companies can capitalise on technology to create or reinforce their competitive positioning. The framework acts as a guide for retail companies to assess their technology priorities. Originality/value: This exploratory empirical study is the result of a collaboration between academic researchers and retail professionals. Thus, it addresses challenges experienced by key stakeholders. The encompassing classification enables a better understanding of the impact of technology on retailers' competitive positioning.This work was supported by the Spanish Ministry of Science and Innovation (Funding Agency #1) under Grant PID2020-113561RB-I00. This study benefited from the Professorship Excellence Program in accordance with the multi-year agreement signed by the Government of Madrid and the Autonomous University of Madrid (Line #3)