ENTREPRENEURIAL WOMEN, DIFFERENTIAL BEHAVIOURS AND BUSINESS INNOVATION

The participation of women in entrepreneurial activity forty years ago was virtually an exception. However, nowadays this is an important economic and social phenomenon, with an outstanding impact on the dynamics of both advanced and emerging economies. This is significant not only from a quantitative viewpoint. The fact that female personal features, motives and managerial methods differ from those of men gives a new and interesting perspective –which is still subject to debate- to the analysis regarding training and consolidation of enterprises. Gender-related differences can be the vehicle to introduce innovative aspects that could be influential in the uncertain and changing economic environment after the current crises, particularly in those fields where business output is related to the quality of life. Adopting a previous regional model as a basis of study, we analyse in this work the characteristics that differentiate entrepreneurial women in Spain on the grounds of data collected from an own drafted survey regarding the entrepreneurial activity (607 complete questionnaires) carried out in 2009. The results obtained indicate the coexistence of two different types of entrepreneurial women. The first group gathers those women whose enterprises show, generally speaking, a similar sectoral distribution to that of the whole productive fabric, although with a slight tendency to be more present in services activities. Their characteristics and attitudes are, in general, quite similar to those registered among entrepreneurial men and many of these women come from entrepreneurial families. The second group is mainly made up of entrepreneurial women –frequently with family burdens and low qualified- devoted to services, particularly personal services and retail trade. Technological and managerial characteristics of companies managed by the entrepreneurial women belonging to this group differ substantially from the average of the economy, with a much more traditional and less innovative profile.

Gadolinium concentration measurement with an atomic absorption spectrophotometer

Because gadolinium (Gd) has the highest thermal neutron capture cross section, resulting in an 8 MeV gamma cascade upon capture, it has been proposed for dissolution in water Cherenkov detectors to achieve efficient neutron tagging capabilities. While metallic Gd is insoluble in water, several compounds are very easy to dissolve. Gadolinium sulfate, Gd$_2$(SO$_4$)$_3$, has been thoroughly tested and proposed as the best candidate. Accurate measurement of its concentration, free of doubt from impurities in water, is crucial. An atomic absorption spectrophotometer (AAS) is a device that suits this purpose and is widely used to measure the concentration of many elements. In this study, we describe three different approaches to measure Gd sulfate concentrations in water using an AAS: doping samples with potassium and lanthanum, and employing tantalum and tungsten platforms

Evaluation of gadolinium’s action on water Cherenkov detector systems with EGADS

Artículo escrito por un elevado número de autores, sólo se referencian el que aparece en primer lugar, el nombre del grupo de colaboración, si le hubiera, y los autores pertenecientes a la UAMUsed for both proton decay searches and neutrino physics, large water Cherenkov (WC) detectors have been very successful tools in particle physics. They are notable for their large masses and charged particle detection capabilities. While current WC detectors reconstruct charged particle tracks over a wide energy range, they cannot efficiently detect neutrons. Gadolinium (Gd) has the largest thermal neutron capture cross section of all stable nuclei and produces an 8 MeV gamma cascade that can be detected with high efficiency. Because of the many new physics opportunities that neutron tagging with a Gd salt dissolved in water would open up, a large-scale R&D program called EGADS was established to demonstrate this technique’s feasibility. EGADS features all the components of a WC detector, chiefly a 200-ton stainless steel water tank furnished with 240 photo-detectors, DAQ, and a water system that removes all impurities from water while keeping Gd in solution. In this paper we discuss the milestones towards demonstrating the feasibility of this novel technique, and the features of EGADS in detailThis work was supported by the JSPS KAKENHI Grant Numbers JP21224004, JP26000003, JP24103004 and JP17H06365. Funding support was provided by Kavli IPMU (WPI), the University of Tokyo and the US Department of Energy. We thank the “Consorcio Laboratorio Subterraneo de Canfranc” (Spain) and the Boulby Underground Research Laboratory and in particular the staff of the BUGS facility (UK) for supporting the low-background materials screening work. Some of us have been supported by funds from the European Union H2020-MSCA-RISE-GA872549-SK2HK, the Spanish Ministry of Science and Innovation (grant PGC2018-099388-B-100), the Science and Technology Facilities Council (STFC) and GridPP, UK, and the European Union’s H2020 -MSCA-RISE-2018 JENNIFER2 grant agreement no. 82207

Two new tomato cultivars : to manufacture jams and marmalades

La finalidad del presente trabajo fue la obtención de cultivares de tomate, con características fisicoquímicas e industriales aptas para la elaboración de dulce tipo mermelada y confitado. En la década del 80, la cátedra de Horticultura de la F. C. Agrarias (UNCuyo) amplió su programa de mejoramiento de esta especie, desarrollando cultivares con plantas de crecimiento determinado (arbustivas), de frutos color amarillo y naranja, diferentes del rojo clásico. El material fitogenético utilizado en los cruzamientos provino de cultivares extranjeras, principalmente de EE. UU. y Europa, adaptadas a nuestra región. De las mismas, después de una selección rigurosa hasta lograr buena estabilización de los caracteres buscados, se eligieron las líneas más destacadas, sometidas a ensayos referidos a productividad, características agronómicas sobresalientes de plantas y calidad de fruto, fundamentalmente firmeza y aptitud para la elaboración de dulces. Resultado final fue la obtención de dos nuevas cultivares de tomate, seleccionadas entre 10 líneas de plantas de crecimiento determinado, de fruto periforme, uno de ellos de coloración amarillo intensa denominado Victoria F.CA y el otro, naranja uniforme, nombrado Don Armando F.CAThe aim of this work is the obtention of new tomato cultivars, whose physical, chemical and industrial characteristics adapt to preserves manufacturing of jam candied type. During the 80th decade, the Horticulture Chair of the Agrarian Sciences Faculty of the Cuyo National University enlarged its improvement program in this species.This program was directed to develop some cultivars with determined growth plants (shrublike) of yellow an orange colored fruits, different from red colored classic cultivars. The phytogenetic material employed in the crossings came from foreign cultivars, mainly from USA and Europe, that were adapted to our region. From such crossings, the most outstanding lines were chosen after asevere selection until a good stabilization of searcherd characters was achieved; most outstanding lines were chosen which were submitted to test as to productivity and in principie, as to outstanding agronomic, characteristics of plants and fruit quality, lirmness and aptitudes for the manufacturing of preserves. The final result is the obtention of two new tomato cultivar, gotFil: Bartucciotto, Carmelo V.. Universidad Nacional de Cuyo. Facultad de Ciencias Agrarias. Departamento de Producción AgropecuariaFil: Marianetti, Amado. Universidad Nacional de Cuyo. Facultad de Ciencias Agrarias. Departamento de Producción AgropecuariaFil: Arenas, Armando. Universidad Nacional de Cuyo. Facultad de Ciencias Agrarias. Departamento de Producción AgropecuariaFil: Marti, Luis . Universidad Nacional de Cuyo. Facultad de Ciencias Agrarias. Departamento de Ingeniería Agrícol

Do gender-related differences exist in Spanish entrepreneurial activity?

The participation of women in entrepreneurial activity forty years ago was virtually an exception. However, nowadays this is an important economic and social phenomenon, with an outstanding impact on the dynamics of both advanced and emerging economies. This is significant not only from a quantitative viewpoint. The fact that female personal features, motives and managerial methods differ from those of men gives a new and interesting perspective -which is still subject to debate- to the analysis regarding training and consolidation of enterprises. Gender-related differences can be the vehicle to introduce innovative aspects that could be influential in the uncertain and changing economic environment after the current crises, particularly in those fields where business output is related to the quality of life. Adopting a previous regional model as a basis of study, we analyse in this work the characteristics that differentiate entrepreneurial women in Spain on the grounds of data collected from an own drafted survey regarding the entrepreneurial activity (607 complete questionnaires) carried out in 2009. The results obtained indicate the coexistence of two different types of entrepreneurial women. The first group gathers those women whose enterprises show, generally speaking, a similar sectoral distribution to that of the whole productive fabric, although with a slight tendency to be more present in services activities. Their characteristics and attitudes are, in general, quite similar to those registered among entrepreneurial men and many of these women come from entrepreneurial families. The second group is mainly made up of entrepreneurial women -frequently with family burdens and low qualified- devoted to services, particularly personal services and retail trade. Technological and managerial characteristics of companies managed by the entrepreneurial women belonging to this group differ substantially from the average of the economy, with a much more traditional and less innovative profile

Semi-collapse of turbulent fountains in stratified media and the mechanisms to control their dynamics

Turbulent fountains are widespread natural phenomena with numerous industrial applications. Extensive research has focused on the temporal evolution and maximum height of these fountains, as well as their dependence on Reynolds and Froude numbers. However, the minimum height of the surrounding ambient fluid, which is removed by the fountain due to the entrainment effect, has received little attention. In this study, we investigate the dependence of this minimum height on the characteristics of the fountain and demonstrate how to control it. Our findings present important implications for technological applications of turbulent fountains, particularly in contaminant withdrawal. We discuss the potential of our results to improve the efficiency of such applications.Comment: 16 pages, 10 figure

Jet stability and the generation of superluminal and stationary components

We present a numerical simulation of the response of an expanding relativistic jet to the ejection of a superluminal component. The simulation has been performed with a relativistic time-dependent hydrodynamical code from which simulated radio maps are computed by integrating the transfer equations for synchrotron radiation. The interaction of the superluminal component with the underlying jet results in the formation of multiple conical shocks behind the main perturbation. These trailing components can be easily distinguished because they appear to be released from the primary superluminal component, instead of being ejected from the core. Their oblique nature should also result in distinct polarization properties. Those appearing closer to the core show small apparent motions and a very slow secular decrease in brightness, and could be identified as stationary components. Those appearing farther downstream are weaker and can reach superluminal apparent motions. The existence of these trailing components indicates that not all observed components necessarily represent major perturbations at the jet inlet; rather, multiple emission components can be generated by a single disturbance in the jet. While the superluminal component associated with the primary perturbation exhibits a rather stable pattern speed, trailing components have velocities that increase with distance from the core but move at less than the jet speed. The trailing components exhibit motion and structure consistent with the triggering of pinch modes by the superluminal component.Comment: Accepted by ApJ Letters. LaTeX, 19 pages, 4 PostScript figure

Evolutions of Magnetized and Rotating Neutron Stars

We study the evolution of magnetized and rigidly rotating neutron stars within a fully general relativistic implementation of ideal magnetohydrodynamics with no assumed symmetries in three spatial dimensions. The stars are modeled as rotating, magnetized polytropic stars and we examine diverse scenarios to study their dynamics and stability properties. In particular we concentrate on the stability of the stars and possible critical behavior. In addition to their intrinsic physical significance, we use these evolutions as further tests of our implementation which incorporates new developments to handle magnetized systems.Comment: 12 pages, 8 figure

Contribution to Theme A of the Benchmark Workshop: Effect of Concrete Swelling on the Equilibrium and Displacements of an Arch Dam

The Kariba dam is undergoing concrete expansion as a result of an alkali-aggregate reaction. The model adopted to simulate the process is explained in the paper; it is based on the model first proposed by Ulm et al, as later modified by Saouma and Perotti. It has been implemented in the commercial finite element code Abaqus and applied to solve the benchmark problem. The parameters of the model were calibrated using the data recorded up to 1995. The calibrated model was then used for predicting the evolution of the dam up to the present date. Apart from this prediction the paper offers a number of conclusions, such as the fact that the stress level appears to have a major influence on the expansion process; and it presents some suggestions to improve the formulation of the benchmark, such as providing temperature data and widening the locations and conditions of the data employed in the calibratio