Precio no monetario percibido en alojamientos e-peer-to-peer. La perspectiva de los huéspedes de Airbnb

[EN] Price is considered as a key variable in predicting buying behavior. However, few studies have focused on how non-monetary price is affected and can affect other components of the consumer endogenous variables. This paper seeks (1) to analyze the effects of antecedents of behavioural price (past experience, the benefits and risks of peer to peer accommodation services) on the guest perceived price, and (2) to determine the effect of this price and past experience on guest intentions. With a sample of 136 Airbnb guests and the use of SEM, results show that past experience, financial risk, and time risk influence the non-monetary perceived price. This price and past experience affect guest intentions. This paper tries to bridge certain gaps detected in the literature: (1) we propose to extend the two main factors underlined, considering non-monetary costs, (2) this paper focuses on peer consumers because there is a lack of specification in previous studies due to authors have not differentiated users into host or guest when they analyse intentions, (3) previous literature has research in Airbnb prices but not in the factors that affect price, not in behavioural price strategies, and (4) much of the work to date has been qualitative in nature, whereas this study takes a quantitative approach.[ES] El precio se considera una variable clave a la hora de determinar el comportamiento de compra. Sin embargo, pocos estudios se han centrado en investigar cómo el precio no monetario se ve afectado y puede afectar otras variables endógenas del consumidor. Así, este trabajo persigue (1) analizar los antecedentes en el precio comportamental (experiencia previa, beneficios y riesgos de los servicios de alojamiento peer-to-peer), y (2) determinar el efecto de este precio no monetario y de la experiencia pasada en las intenciones del huésped. Con una muestra de 136 huéspedes de Airbnb y el uso de modelos de ecuaciones estructurales, los resultados muestran que la experiencia pasada, el riesgo financiero y el riesgo de tiempo influyen en el precio no monetario percibido. Este precio y la experiencia pasada influyen en las intenciones de los huéspedes. Así, a través de este manuscrito, se persiguen cubrir ciertos gaps detectados en la literatura: (1) proponemos ampliar los dos factores principales subrayados, considerando los precios no monetarios, (2) este trabajo se centra en los huéspedes debido a que estudios previos no han diferenciado entre anfitriones o huéspedes al analizar las intenciones, (3) si bien algunos trabajos previos han investigado sobre los precios de Airbnb, no han analizado los factores que los afectan, ni las estrategias de precios no monetarios, y (4) gran parte del trabajo, hasta la fecha, ha sido de naturaleza cualitativa, mientras que este estudio adopta un enfoque cuantitativo

Recommendations and guidelines for applied nutrition experiments in rabbits

[EN] The aim of this paper was to draw up a set of recommendations for applied nutrition and feeding trials with rabbits, in relation to certain aspects such as determining the nutritive value of raw materials or diets in growing or reproducing animals, studying digestive physiology and obtaining growth and reproduction parameters. We deal first with animals, size of the sample, housing conditions, diets, handling, measurements, and the data analyses relevant to the design of the experiment are described. Secondly, we give a list of recommended items and include some comments.This study was partly supported by the EUROPEAN COMMISSION (ERAFE program and the COST 848 Action).Fernández-Carmona, J.; Blas, E.; Pascual Amorós, JJ.; Maertens, L.; Gidenne, T.; Xiccato, G.; García, J. (2005). Recommendations and guidelines for applied nutrition experiments in rabbits. World Rabbit Science. 13. doi:10.4995/wrs.2005.516SWORD1

Measurement of mental attention: Assessing a cognitive component underlying performance on standardized intelligence tests

Despite the widespread use of standardized IQ tests to measure human intelligence, problems with such measures have led some to suggest that better indices may derive from measurement of cognitive processes underlying performance on IQ tests (e.g., working memory capacity). However, measures from both approaches may exhibit performance biases in favour of majority groups, due to the influence of prior learning and experience. Mental attentional (M-) capacity is proposed to be a causal factor underlying developmental growth in working memory. Measures of M-capacity index important cognitive variance underlying performance on standardized intelligence tests. These measures appear to be reasonably culture-fair and invariant across content domains. The current study tested theoretical predictions regarding the content-invariance of M-measures and the development of M-capacity for groups of children differing in performance on standardized IQ tests. 91 participants differentiated on the basis of academic stream (intellectually gifted vs. mainstream) and age (grade 4 vs. grade 8) received measures of M-capacity in the verbal and visuo-spatial domains. Children identified as gifted scored about one stage higher on both measures. Results suggest that measures of M-capacity may be useful adjuncts to standardized intelligence measures

'En la masmédula'. La voz sin yo, sin vos

Este artículo estudia el poemario de Oliverio Girando 'En la masmédula', especialmente los aspectos sintácticos, morfológicos y fonéticos que muestran la desaparición del sujeto. This paper is focused on the poem book 'En la masmédula' by Oliverio Girondo, and it analyses the syntactic, morphologic and phonetic means by which the subject vanishes in the poetic text

Captura de estorninos negros (Sturnus unicolor) mediante un modelo de nidal-trampa

Aquest article descriu el disseny d'una trampa-niu per capturar estornells negres i en resumeix els resultats. Durant 109 dies de treball de camp es van capturar 440 individus de cinc espècies (estornell negre 418, pica-soques blau 11, mallerenga blava 7, mallerenga carbonera 3, picot garser gros 1). Es considera que la trampa és útil per capturar estornells negres, ja que el 95% dels ocells capturats van pertànyer a aquesta espècie. Només 3 ocells (0,68%) van patir alguna lesió o van morir per causa de la trampa. També es presenten els resultats de les variacions de les captures dels estornells negres segons l'hora del dia, l'època de l'any, l'edat i el sexe

Observational Δν\Delta\nu-ρˉ\bar\rho relation for δ\delta Sct stars using eclipsing binaries and space photometry

Delta Scuti ($\delta$ Sct) stars are intermediate-mass pulsators, whose intrinsic oscillations have been studied for decades. However, modelling their pulsations remains a real theoretical challenge, thereby even hampering the precise determination of global stellar parameters. In this work, we used space photometry observations of eclipsing binaries with a $\delta$ Sct component to obtain reliable physical parameters and oscillation frequencies. Using that information, we derived an observational scaling relation between the stellar mean density and a frequency pattern in the oscillation spectrum. This pattern is analogous to the solar-like large separation but in the low order regime. We also show that this relation is independent of the rotation rate. These findings open the possibility of accurately characterizing this type of pulsator and validate the frequency pattern as a new observable for $\delta$ Sct stars.Comment: 11 pages, including 2 pages of appendix, 2 figures, 2 tables, accepted for publication in ApJ

A programme for the new network industries

Digitalisation is transforming network industries. The new data layer on top of infrastructures and transport services improves efficiency in the management of traditional networks. However, traditional network managers can be disrupted as their infrastructures and services become intermediated by digital platforms in situation to create more powerful network effects by coordinating previously fragmented or isolated infrastructures and services (indirect and data network effects). As a matter of fact, digital platforms present the transformative characteristics of network industries: network effects, efficiency, scale, concentration, market power, etc. Digital platforms are ‘the new network industries’. This paper identifies the key challenges of digitalisation for traditional network industries and defines a research programme for the new network industries

Charge Transport in Trap-Sensitized Infrared PbS Quantum-Dot-Based Photoconductors: Pros and Cons

Control of quantum-dot (QD) surface chemistry offers a direct approach for the tuning of charge-carrier dynamics in photoconductors based on strongly coupled QD solids. We investigate the effects of altering the surface chemistry of PbS QDs in such QD solids via ligand exchange using 3-mercaptopropionic acid (MPA) and tetrabutylammonium iodide (TBAI). The roll-to-roll compatible doctor-blade technique was used for the fabrication of the QD solid films as the photoactive component in photoconductors and field-effect phototransistors. The ligand exchange of the QD solid film with MPA yields superior device performance with higher photosensitivity and detectivity, which is due to less dark current and lower noise level as compared to ligand exchange with TBAI. In both cases, the mechanism responsible for photoconductivity is related to trap sensitization of the QD solid, in which traps are responsible of high photoconductive gain values, but slow response times under very low incident optical power (100 pW), where traps are filled, both MPA- and TBAI-treated photodevices exhibit similar behavior, characterized by lower responsivity and faster response time, as limited by the mobility in the QD solid

Evolution of the peripheral blood lymphocyte populations in multiparous rabbit does with two reproductive management rhythms

The emergence of epizootic rabbit enteropathy is leading to changes in weaning protocols in commercial rabbitries. Traditional weaning protocols are being replaced with late weaning, beyond 35 days postpartum (dpp). The main objectives of this study were to compare the peripheral blood lymphocyte populations of multiparous rabbit does under two reproductive rhythms (insemination at 11 dpp and weaning at 28 dpp, insemination at 25 dpp and weaning at 42 dpp), and to assess the influence on those of kits. Samples of peripheral blood were taken in 22 adult females and 44 of their kits at different critical times, and several lymphocytic populations were evaluated by flow cytometry. Additionally, the perirenal fat thickness of does was also measured at partum and weaning to observe if body condition correlates with lymphocyte populations. During whole lactation, counts of total, CD5 +, CD4 + and CD8 + lymphocytes of females were generally lower with weaning at 42 dpp compared to 28 dpp. Moreover, counts of total, B and CD5 + lymphocytes in rabbit does weaned at 42 dpp correlated to their body condition (+0.60 to 0.82; P<0.05), contrary to that observed in rabbit does weaned at 28 dpp. Some correlations between lymphocyte counts in both groups of does and weaning rabbits were observed. At weaning, those young rabbits weaned at 42 dpp had a significantly lower number of CD4 + lymphocytes than those weaned at 28 dpp (P<0.01). In conclusion, the 42 ddp rabbit does presented a lower number of total lymphocytes and lymphocytic subpopulations during lactation and at weaning, as well as lesser capacity of adjustment during the gestation-lactation cycle. © 2010 Elsevier B.V.This study has been supported by grants from the CEU-Cardenal Herrera University (Banco Santander/CEU-UCH: Copernicus Program (PRCEU-UCH/COOP 01/08), Generalitat Valenciana (ACOMP/2009/207 and ACOMP/2010/062) and the Comision Interministerial de Ciencia y Tecnologia (AGL2008-00273/GAN). Grants for Selena Ferrian and Irene Guerrero from Generalitat Valenciana (the Santiago Grisolia programme) and from the CEU-Cardenal Herrera University, respectively, are gratefully acknowledged.Guerrero, I.; Ferrian, S.; Blas Ferrer, E.; Pascual Amorós, JJ.; Cano, JL.; Corpa, JM. (2011). Evolution of the peripheral blood lymphocyte populations in multiparous rabbit does with two reproductive management rhythms. Veterinary Immunology and Immunopathology. 140(1-2):75-81. https://doi.org/10.1016/j.vetimm.2010.11.017S75811401-

Numerical evaluation of the Green's functions for arbitrarily shaped enclosures

In this paper, a new spatial method has been implemented for the efficient calculation of the mixed potential Green's functions associated to electrical sources, when they are placed inside arbitrarily-shaped cylindrical cavities. The technique consists of placing electric dipole images and charges outside the cavity, imposing, at discrete points of the metallic wall, the appropriate boundary conditions for the potentials. Results show that the numerical convergence is attained fast. The cut-off frequencies and potential patterns for a trapezium-shaped waveguide are compared to those obtained by a standard finite elements technique, showing excellent agreement. Furthermore, a printed planar filter shielded in a square cavity has been analyzed with the new Green's functions, showing the practical value of the new theory.This work has been supported by Spanish National project CICYT-TEC2004-043 13-C02-02/TCM, and by Fundacion Séneca project, Ref. 02972/PI/0