Scaling properties of a ferromagnetic thin film model at the depinning transition

In this paper, we perform a detailed study of the scaling properties of a ferromagnetic thin film model. Recently, interest has increased in the scaling properties of the magnetic domain wall (MDW) motion in disordered media when an external driving field is present. We consider a (1+1)-dimensional model, based on evolution rules, able to describe the MDW avalanches. The global interface width of this model shows Family-Vicsek scaling with roughness exponent $\zeta\simeq 1.585$ and growth exponent $\beta\simeq 0.975$. In contrast, this model shows scaling anomalies in the interface local properties characteristic of other systems with depinning transition of the MDW, e.g. quenched Edwards-Wilkinson (QEW) equation and random-field Ising model (RFIM) with driving. We show that, at the depinning transition, the saturated average velocity $v_\mathrm{sat}\sim f^\theta$ vanished very slowly (with $\theta\simeq 0.037$) when the reduced force $f=p/p_\mathrm{c}-1\to 0^{+}$. The simulation results show that this model verifies all accepted scaling relations which relate the global exponents and the correlation length (or time) exponents, valid in systems with depinning transition. Using the interface tilting method, we show that the model, close to the depinning transition, exhibits a nonlinearity similar to the one included in the Kardar-Parisi-Zhang (KPZ) equation. The nonlinear coefficient $\lambda\sim f^{-\phi}$ with $\phi\simeq -1.118$, which implies that $\lambda\to 0$ as the depinning transition is approached, a similar qualitatively behaviour to the driven RFIM. We conclude this work by discussing the main features of the model and the prospects opened by it.Comment: 10 pages, 5 figures, 1 tabl

Equilibrium with limited-recourse collateralized loans

We address a general equilibrium model with limited-recourse collateralized loans. Borrowers are burden to constitute physical collateral guarantees, which are repossessed in case of default and delivered to the associated lenders. In addition, lenders may receive payments over collateral values, since debtor's wealth (physical and financial) can be garnished when commitments are not fully honored. The reimbursement of resources is proportional to the size of claims.Collateralized assets; Bankruptcy, Limited-recourse loans; Equilibrium existence.

Multimedia big data computing for in-depth event analysis

While the most part of ”big data” systems target text-based analytics, multimedia data, which makes up about 2/3 of internet traffic, provide unprecedented opportunities for understanding and responding to real world situations and challenges. Multimedia Big Data Computing is the new topic that focus on all aspects of distributed computing systems that enable massive scale image and video analytics. During the course of this paper we describe BPEM (Big Picture Event Monitor), a Multimedia Big Data Computing framework that operates over streams of digital photos generated by online communities, and enables monitoring the relationship between real world events and social media user reaction in real-time. As a case example, the paper examines publicly available social media data that relate to the Mobile World Congress 2014 that has been harvested and analyzed using the described system.Peer ReviewedPostprint (author's final draft

La garantía de ejecución penal a cargo del juez de vigilancia penitenciaria a 36 años de su existencia en la legislación penal española

The General PenitentiaryOrganicLaw 1/1979, of september 26 th,\ud introduced in theSpanishLawthe figure of PrisonSupervisionJudgewhoisindependent of\ud theAdministrationauthorithyembodied in thejudiciarywhichaimstoplay a judicial activity\ud in thesentences and securitymeasuresexecution, and alsoto control thelegality of\ud prisonactivity and thesubmission of thesametotheirlawfulpurposes,\ud saveguardingtherights of theinmatesnotaffectedby de contents of theconviction, sense of\ud worthorthePrisonAct. He’s, therfor, a fundamental element of thedemocratic rule of law\ud in charge of effective judicial protectionforthefulfillment of the legal consecuences of\ud thecrime and, at thesame time, guardian of therights of prisoners.\u

Human peritoneal mesothelial cell death induced by high-glucose hypertonic solution involves Ca2+ and Na+ ions and oxidative stress with the participation of PKC/NOX2 and PI3K/Akt pathways

Indexación: Web of Science; Scopus.Chronic peritoneal dialysis (PD) therapy is equally efficient as hemodialysis while providing greater patient comfort and mobility. Therefore, PD is the treatment of choice for several types of renal patients. During PD, a high-glucose hyperosmotic (HGH) solution is administered into the peritoneal cavity to generate an osmotic gradient that promotes water and solutes transport from peritoneal blood to the dialysis solution. Unfortunately, PD has been associated with a loss of peritoneal viability and function through the generation of a severe inflammatory state that induces human peritoneal mesothelial cell (HPMC) death. Despite this deleterious effect, the precise molecular mechanism of HPMC death as induced by HGH solutions is far from being understood. Therefore, the aim of this study was to explore the pathways involved in HGH solution-induced HPMC death. HGH-induced HPMC death included influxes of intracellular Ca2+ and Na+. Furthermore, HGH-induced HPMC death was inhibited by antioxidant and reducing agents. In line with this, HPMC death was induced solely by increased oxidative stress. In addition to this, the cPKC/NOX2 and PI3K/Akt intracellular signaling pathways also participated in HGH-induced HPMC death. The participation of PI3K/Akt intracellular is in agreement with previously shown in rat PMC apoptosis. These findings contribute toward fully elucidating the underlying molecular mechanism mediating peritoneal mesothelial cell death induced by high-glucose solutions during peritoneal dialysis.https://www.frontiersin.org/articles/10.3389/fphys.2017.00379/ful

The elder community, traffic accidents and Social Work

S i se cumple la proyección sobre población para 2050 aportada por la OMS, en España el 35% de sus habitantes tendrán más de 65 años. La rapidez con que nos acercamos a esa cifra, aparentemente lejana, obliga a redefinir, en muchos aspectos, las variables económicas, sociales y culturales desde las que se ha construido el modelo de vida y las prioridades presupuestarias. Un aspecto de esa sociología de la vida cotidiana de “los mayores” está marcado por su situación asimétrica con el tráfico de vehículos y la pandemia que suponen los accidentes de tráfico, con muertes y lesiones, tanto en carretera como en ciudad, tanto en su rol de conductores como en su papel de peatones. Según los últimos datos de la DGT, los +65 son los que menos se benefician de la reducción de accidentes que se ha producido en España en los últimos años. El hecho de que no exista una edad límite para retirar el carné de conducir y que los Centros de Reconocimiento de Conductores no cumplan con su cometido de disuasión legal, por establecer una competencia a la baja en busca del cliente, impiden la funcionalidad del sistema. Con este panorama, en que las carreteras se encuentran y se encontrarán crecientemente utilizadas por conductores septuagenarios, octogenarios y nonagenarios, aparecen dos figuras fundamentales por su situación relacional con los mayores, que pueden aportar un gran servido a la colectividad, el médico de cabecera y el trabajador social. Involucrarse o no en esta tarea puede ser decisivo. Se abre, así, un nuevo ámbito de intervención social: mayores vulnerables ante el tráfico._______________________________________According to the OMS 35% of the Spanish population will be over 65 years in the year 2050. These circumstances imply a redefinition of economic, social and cultural variables. Last data from the Spanish DGT (Traffic General Office) indicate that people over 65 are the segment of population that less advantages obtain as a consecuence of reductions in road accidents. Since there is neither age limit nor driver health control to cancel the driving licence in Spain, the system that rules driving is not functional. Under this perspective, an increasing number of drivers over 70, 80, and 90 will increasingly be filling up Spanish roads and highways. Therefore, two figures will become relevant to face this situation; the social worker and the physician. Also, a new area of social intervention is open: traffic-vulnerable elders

Towards the cloudification of the social networks analytics

In the last years, with the increase of the available data from social networks and the rise of big data technologies, social data has emerged as one of the most profitable market for companies to increase their benefits. Besides, social computation scientists see such data as a vast ocean of information to study modern human societies. Nowadays, enterprises and researchers are developing their own mining tools in house, or they are outsourcing their social media mining needs to specialised companies with its consequent economical cost. In this paper, we present the first cloud computing service to facilitate the deployment of social media analytics applications to allow data practitioners to use social mining tools as a service. The main advantage of this service is the possibility to run different queries at the same time and combine their results in real time. Additionally, we also introduce twearch, a prototype to develop twitter mining algorithms as services in the cloud.Peer ReviewedPostprint (author’s final draft