Quadratic Maps in Two Variables on Arbitrary Fields

Let $\mathbb{F}$ be a field of characteristic different from $2$ and $3$, and let $V$ be a vector space of dimension $2$ over $\mathbb{F}$. The generic classification of homogeneous quadratic maps $f\colon V\to V$ under the action of the linear group of $V$, is given and efficient computational criteria to recognize equivalence are provided.Comment: 12 pages, no figure

From Invisibility to the Public Sphere: The Hybrid Media Strategy of a New Party (Podemos, Spain, 2014–2015)

How does a new party manage to move from invisibility to occupying a central position in the public debate? How does it gain the attention of the mainstream media and recognition by the public and the institutions linked to sociopolitical and economic power? This article examines the media strategy followed by the Spanish party Podemos in its first year of activity. We apply quantitative and longitudinal methods to analyze the attention paid to Podemos by television channels, newspapers, online press, and digital networks. Results show that the party prioritized antagonistic talk shows, infotainment, and self-produced television programs, which combined to create a viral presence on digital networks and led to its leaders appearing on mainstream TV channels. This hybrid strategy took the party from media invisibility to the central public sphere, though traditional dependence on favorable opinion polls and electoral success were also relevant

Osteocondroma intra-raquideo con afectación neurológica

Se presenta el caso de un varón de 16 años con lumbalgia consecutiva a traumatismo vertebral, sin hallazgo s radiológicos, que no mejoraba con tratamient o conservador, y que a las 5 semanas desarrolló un cuadro de paraparesia e incontinencia de esfínteres indicativo de afectación del cono medular. En el estudio mielográfico se objetivó bloqueo completo a nivel de Ll. La tomografía axial mostró una imagen sugestiva de osteocondroma intraraquídeo, que s e confirmó quirúrgicamente . Dos año s tras la intervención, se logró la total recuperación neurológica. Se destaca la rareza de la lesión, la dificultad diagnóstica, y la probable etiología traumática de la tumoración.A 16-year-old man with no improvement of low back pain after vertebral trauma conservatively treated and without radiological findings is presented. Five weeks after trauma, the patient developed paraparesia and fecal and urinary incontinence indicating compression of the medullary conus. A complet e stop of the contrast at Ll level wa s found in the myelographi c study. The CT-Scan showed an image suggesting osteochondroma whic h wa s confirmed a r surgery. Complet e neurogical recover y w a s achieved 2 year s after surgical treatment. The rare character of the lesion, the dificulty for diagnosis and the probable traumatic etiology of this tumor is discussed

Culicoides species communities associated with wild ruminant ecosystems in Spain: Tracking the way to determine potential bridge vectors for arboviruses

The genus Culicoides Latreille 1809 is a well-known vector for protozoa, filarial worms and, above all, numerous viruses. The Bluetongue virus (BTV) and the recently emerged Schmallenberg virus (SBV) are responsible for important infectious, non-contagious, insect-borne viral diseases found in domestic ruminants and transmitted by Culicoides spp. Both of these diseases have been detected in wild ruminants, but their role as reservoirs during the vector-free season still remains relatively unknown. In fact, we tend to ignore the possibility of wild ruminants acting as a source of disease (BTV, SBV) and permitting its reintroduction to domestic ruminants during the following vector season. In this context, a knowledge of the composition of the Culicoides species communities that inhabit areas where there are wild ruminants is of major importance as the presence of a vector species is a prerequisite for disease transmission. In this study, samplings were conducted in areas inhabited by different wild ruminant species; samples were taken in both 2009 and 2010, on a monthly basis, during the peak season for midge activity (in summer and autumn). A total of 102, 693 specimens of 40 different species of the genus Culicoides were trapped; these included major BTV and SBV vector species. The most abundant vector species were C. imicola and species of the Obsoletus group, which represented 15% and 11% of total numbers of specimens, respectively. At the local scale, the presence of major BTV and SBV vector species in areas with wild ruminants coincided with that of the nearest sentinel farms included in the Spanish Bluetongue Entomological Surveillance Programme, although their relative abundance varied. The data suggest that such species do not exhibit strong host specificity towards either domestic or wild ruminants and that they could consequently play a prominent role as bridge vectors for different pathogens between both types of ruminants. This finding would support the hypothesis that wild ruminants could act as reservoirs for such pathogens, and subsequently be involved in the reintroduction of disease to livestock on neighbouring farms

Spanish bottom trawl spring survey “Fletán Ártico 2015” in the Slope of Svalbard (ICES Division IIb2)

Documento de trabajo paras el ICES-AFWG 2016The "Fletán Ártico 2015" spring survey is a continuation of the Spanish bottom trawl survey series started in 1997 on the slope of Svalbard (ICES IIb2) using commercial vessels. The present survey was carried out from the 19th of June to the 10th of July, 2015 on board a Spanish freezer trawler using a bottom trawl gear. There were 81 valid hauls in which Greenland halibut was clearly the predominant species (Catch per unit effort [CPUE] = 2,758.1 kg/hr; abundance index =155,333 (‘000) individuals; and biomass index = 150,385 tons). In the frame of the spring surveys, the present survey shows a positive trend in these indices, but such values are lower than the ones obtained from the autumn surveys. The latitudinal and bathymetric distributions of the species were similar to those observed in previous years. Population structure was also quite similar to those described previously, with a predominance of males. Modal length was 46 cm for males and 48 cm for females. Mature Greenland halibut individuals were dominant in the catches. Cod (1,120.6 kg), redfish (734.7 kg) and roughhead grenadier (460.8 kg), were the three main accompanying species in terms of weight. When compared to the Greenland halibut, the accompanying species show very low CPUE values and very low abundance and biomass indices. By-catches of Vulnerable Marine Ecosystems (VMEs) indicator species were generally absent or low. Only in two hauls the sea pen by-catches exceeded the NAFO threshold for “significant research vessel trawl sea pen catches”.Sector pesquer

Antimicrobial Resistance in Bacteria Isolated from Exotic Pets : The Situation in the Iberian Peninsula

Literature related to antimicrobial resistant (AMR) bacteria in exotic pets is minimal, being essential to report objective data on this topic, which represents a therapeutic challenge for veterinary medicine and public health. Between 2016 and 2020, laboratory records of 3156 exotic pet specimens' microbiological diagnoses and antibiotic susceptibility testing (AST) results were examined. The samples were classified into three animal classes: birds (n = 412), mammalia (n = 2399), and reptilian (n = 345). The most prevalent bacteria in birds and mammals were Staphylococcus spp. (15% and 16%), while in reptiles they were Pseudomonas spp. (23%). Pseudomonas was the genus with the highest levels of AMR in all animal groups, followed by Enterococcus spp. By contrast, Gram-positive cocci and Pasteurella spp. were the most sensitive bacteria. Moreover, in reptiles, Stenotrophomonas spp., Morganella spp., and Acinetobacter spp. presented high levels of AMR. Multidrug-resistant (MDR) bacteria were isolates from reptiles (21%), birds (17%), and mammals (15%). The Enterobacterales had the highest MDR levels: S. marcescens (94.4%), C. freundii (50%), M. morganii (47.4%), K. pneumoniae (46.6%), E. cloacae (44%), and E. coli (38.3%). The prevalence of MDR P. aeruginosa strains was 8%, detecting one isolate with an XDR profile. Regarding antimicrobial use, many antibiotics described as critically important for human use had significant AMR prevalence in bacteria isolated from exotic pets. Under the One-Health approach, these results are alarming and of public health concern since potential transmission of AMR bacteria and genes can occur from exotic pets to their owners in both senses. For this reason, the collaboration between veterinarians and public health professionals is crucial

Interaction of 8 He with 208Pb at near-barrier energies: 4 He and 6 He production

Spanish Ministry of Economy and Competitiveness-FPA-2010-22131-CO2-01 (FINURA) y FPA2013-47327-C2-1-RMinistry of Science and Higher Education of Poland-N202 033637National Science Centre of Poland-2013/08/M/ST2/00257 (LEA-COPIGAL) y 2014/14/M/ST2/00738 (COPIN-INFN Collaboration)European Science Foundation-EUI2009-04163432 (EUROGENESIS

Comparación de ciberacoso y autoeficacia en redes sociales: Ciudad de México y Estado de México.

The objective of this study was to compare the frequency of cyberbullying, the type of responses to it, as well as knowledge and self-efficacy in the use of social networks in young people from Mexico City and the State of Mexico. The sample comprised 1673 students of both sexes between 14 and 20 years old (862 participants from Mexico City and 811 from the State of Mexico). We performed descriptive analyses and X2 tests. The results showed a significant difference between the frequency of cyberbullying and the level of young people's knowledge. The latter variable was higher in Mexico City than in the State of Mexico. However, participants from the State of Mexico scored higher than those from Mexico City in the way they respond to cyberbullying (assertive and empathetic) and in self-efficacy. More research on this issue is needed given the scarcity of statistics and information on this topic in MexicoEl objetivo del presente estudio fue comparar la frecuencia con la que se presenta el ciberacoso, el tipo de respuestas ante él, así como el conocimiento y autoeficacia para el uso de redes sociales en jóvenes de la Ciudad de México y del Estado de México. La muestra estuvo constituida por 1673 alumnos de ambos sexos (862 de la Ciudad de México y 811 del Estado de México) de entre 14 y 20 años. Se realizaron análisis de frecuencias y la prueba χ2. Los resultados mostraron diferencias significativas entre la frecuencia en la que se presentó el ciberacoso y los conocimientos que poseen los jóvenes entre las dos entidades federativas, siendo más elevado en la Ciudad de México en comparación con el Estado de México. Sin embargo, en la forma en que los jóvenes responden al ciberacoso (asertiva y empática) y en autoeficacia la diferencia es contraria, es decir, el Estado de México puntúa mayor que la Ciudad de México. Finalmente, se concluye que se deben realizar más investigaciones de esta índole debido a que existe una escasa información acerca del ciberacoso en México