Study of the derivative expansions for the nuclear structure functions

We study the convergence of the series expansions sometimes used in the analysis of the nuclear effects in Deep Inelastic Scattering (DIS) proccesses induced by leptons. The recent advances in statistics and quality of the data, in particular for neutrinos calls for a good control of the theoretical uncertainties of the models used in the analysis. Using realistic nuclear spectral functions which include nucleon correlations, we find that the convergence of the derivative expansions to the full results is poor except at very low values of $x$

Making Transport Safer: V2V-Based Automated Emergency Braking System

An important goal in the field of intelligent transportation systems (ITS) is to provide driving aids aimed at preventing accidents and reducing the number of traffic victims. The commonest traffic accidents in urban areas are due to sudden braking that demands a very fast response on the part of drivers. Attempts to solve this problem have motivated many ITS advances including the detection of the intention of surrounding cars using lasers, radars or cameras. However, this might not be enough to increase safety when there is a danger of collision. Vehicle to vehicle communications are needed to ensure that the other intentions of cars are also available. The article describes the development of a controller to perform an emergency stop via an electro-hydraulic braking system employed on dry asphalt. An original V2V communication scheme based on WiFi cards has been used for broadcasting positioning information to other vehicles. The reliability of the scheme has been theoretically analyzed to estimate its performance when the number of vehicles involved is much higher. This controller has been incorporated into the AUTOPIA program control for automatic cars. The system has been implemented in Citroën C3 Pluriel, and various tests were performed to evaluate its operation

Estadística. Volum 1

Diplomatura en Ciències Empresarials. C23: Estadístic

Landsat and local land surface temperatures in a heterogeneous terrain compared to MODIS values

Land Surface Temperature (LST) as provided by remote sensing onboard satellites is a key parameter for a number of applications in Earth System studies, such as numerical modelling or regional estimation of surface energy and water fluxes. In the case of Moderate Resolution Imaging Spectroradiometer (MODIS) onboard Terra or Aqua, pixels have resolutions near 1 km2 , LST values being an average of the real subpixel variability of LST, which can be significant for heterogeneous terrain. Here, we use Landsat 7 LST decametre-scale fields to evaluate the temporal and spatial variability at the kilometre scale and compare the resulting average values to those provided by MODIS for the same observation time, for the very heterogeneous Campus of the University of the Balearic Islands (Mallorca, Western Mediterranean), with an area of about 1 km2 , for a period between 2014 and 2016. Variations of LST between 10 and 20 K are often found at the sub-kilometre scale. In addition, MODIS values are compared to the ground truth for one point in the Campus, as obtained from a four-component net radiometer, and a bias of 3.2 K was found in addition to a Root Mean Square Error (RMSE) of 4.2 K. An indication of a more elaborated local measurement strategy in the Campus is given, using an array of radiometers distributed in the area

Charged lepton induced one kaon production off the nucleon

We study single kaon production off the nucleon induced by electrons (positrons) i.e., e(-) (e(+)) + N -> v(e) ((v) over bar (e)) + (K) over bar (K) + N' at low energies. The possibility of observing these processes with the high luminosity beams available at TJNAF and Mainz is discussed, taking into account that the strangeness conserving electromagnetic reactions have a higher energy threshold for (K) over bar (K) production. The calculations are done using a microscopic model that starts from the SU(3) chiral Lagrangians and includes background terms and the resonant mechanisms associated to the lowest lying resonance Sigma*(1385

RELEVANCIA DEL DIAGNÓSTICO DIFERENCIAL ENTRE EL SÍNDROME AÓRTICO AGUDO Y EL SÍNDROME CORONARIO AGUDO EN PACIENTES CON DOLOR TORÁCICO Y CRISIS HIPERTENSIVA: REVISIÓN A PROPÓSITO DE 2 CASOS / Relevance of the differential diagnosis between acute aortic syndrome and acute coronary syndrome in patients with thoracic pain and hypertensive crisis: review on 2 case reports

Acute aortic syndrome is a pathological process with low incidence compared with acute coronary syndrome, although with a worse prognosis in the short term, which is why its early diagnosis and urgent treatment are essential to the favorable evolution of thepatient. Electrocardiographic changes suggestive of myocardial ischemia, with acute evolution, are rare in acute aortic syndrome. Even in the presence of a suggestive thoracic pain and high levels of blood pressure, an adequate differential diagnosis is of utmost importance, since the administration of anticoagulation and antiplatelet therapy in high doses can have a dramatic impact on patient outcome. Two cases are presented in which electrocardiographic changes determined the action to take in patients with acute aortic syndrome

Influencia de la cirugía mayor ambulatoria y de corta estancia en las diferencias por sexo de las hernias inguinocrurales

Objetivo: El objetivo del presente estudio es valorar en que medida la cirugía mayor ambulatoria (CMA) y de corta estancia mantienen, aumentan o disminuyen las desigualdades por sexo en la asistencia sanitaria de las intervenciones quirúrgicas practicadas por hernia inguinocrural (HIC). Material y métodos: Estudio transversal sobre 3.834 reparaciones (3.076 hombres/758 mujeres) de HIC practicadas en el Hospital General Universitario de Alicante entre 1995 y 2004. Fuente: conjunto mínimo básico de datos (CMBD). Variables: edad, sexo, diagnóstico principal, procedimiento quirúrgico, fechas de intervención y de alta. Cálculo de frecuencias y tasas por sexo, edad y tipo de admisión: contraste de proporciones. Estancia media (EM) mediante Contraste Mann-Whitney. Resultados: El 78% de las HIC fueron operadas en régimen de CMA o corta estancia, el resto con estancia de tres días o mayor. El 50% de todas las reparaciones se practicaron en niños menores de 14 años, siendo la indicación de CMA mayor en las niñas. A los pacientes mayores de 55 años se les tiende a admitir menos en CMA, con mayor proporción de mujeres. RatioH/M de todas las HIC = 4,06. En CMA: 0-14 ratioH/M = 3,25; > 55 años ratioH/M = 6,87 (p 55 ratioH/M = 3,65. EM total: > 55 = 3,66H y 4,09M (p 55 = 1,04H y 1,27M (p 55 = 6.87 (p 55 = 3.65. LOS in > 55 (AMB and Stay): 3.66 M 4.09W (p 55: 1.04 M 1.27W (p < 0,001). Conclusions: AMB is the most suitable way for repairing uncomplicated I&FH in men as well as in women, and even more so for children, adolescents, young people and adults. Nevertheless, gender bias in patients older than 55 is revealed: a greater proportion of women are admitted for 3 or more days as compared to men. However LOS is shorter in women. On the other hand, the amount of women treated as AMB is seven times smaller than men, being LOS longer for women in this group. That shows a difference in medical attention depending on sex for the same pathological process and age

Obra completa

Contiene: Poesia. I. Volar ; La inquietud en calma ; Jo sense tu ; On vaig, senyor? ; Aires de cançó ; Goig ; Esparses ; Braçat ; Poema dramàticament esperançat. II. Home ; Jo, cap de casa ; D'amar-te, amor ; Silenci ; Jo també tinc set ; Gran Sonata de la Pàtria ; Schumann, el piano i yo ; 50 anys del 7 d'octubre ; Soc qui soc ; Maror ; Vinatea ; Cantata valenciana de l'anima del cor ; Inèdites, diverses, disperses i rares / edició, estudi introductori i notes de Ricard Bellveser -- Prosa. I. Flexions i reflexions ; Memories d'un important sense importància ; Proses en carn ; Confesión con Ausiàs March ; Miscelànea. II. Artículs periodístics / Vicent Ll. Simó Santonja (coord.

An Intelligent V2I-Based Traffic Management System

International audienceVehicles equipped with intelligent systems designed to prevent accidents, such as collision warning systems (CWSs) or lane-keeping assistance (LKA), are now on the market. The next step in reducing road accidents is to coordinate such vehicles in advance not only to avoid collisions but to improve traffic flow as well. To this end, vehicle-to-infrastructure (V2I) communications are essential to properly manage traffic situations. This paper describes the AUTOPIA approach toward an intelligent traffic management system based on V2I communications. A fuzzy-based control algorithm that takes into account each vehicle's safe and comfortable distance and speed adjustment for collision avoidance and better traffic flow has been developed. The proposed solution was validated by an IEEE-802.11p-based communications study. The entire system showed good performance in testing in real- world scenarios, first by computer simulation and then with real vehicles

Topical administration of bosentan prevents retinal neurodegeneration in experimental diabetes

Experimental evidence suggests that endothelin 1 (ET-1) is involved in the development of retinal microvascular abnormalities induced by diabetes. The effects of ET-1 are mediated by endothelin A- and B-receptors (ETA and ETB). Endothelin B-receptors activation mediates retinal neurodegeneration but there are no data regarding the effectiveness of ETB receptor blockage in arresting retinal neurodegeneration induced by diabetes. The main aim of the present study was to assess the usefulness of topical administration of bosentan (a dual endothelin receptor antagonist) in preventing retinal neurodegeneration in diabetic (db/db) mice. For this purpose, db/db mice aged 10 weeks were treated with one drop of bosentan (5 mg/mL, n = 6) or vehicle (n = 6) administered twice daily for 14 days. Six non-diabetic (db/+) mice matched by age were included as the control group. Glial activation was evaluated by immunofluorescence using specific antibodies against glial fibrillary acidic protein (GFAP). Apoptosis was assessed by TUNEL method. A pharmacokinetic study was performed in rabbits. We found that topical administration of bosentan resulted in a significant decrease of reactive gliosis and apoptosis. The results of the pharmacokinetic study suggested that bosentan reached the retina through the trans-scleral route. We conclude that topical administration of bosentan was effective in preventing neurodegeneration in the diabetic retina and, therefore, could be a good candidate to be tested in clinical trials