Analytical Modeling of Interference Aware Power Control for the Uplink of Heterogeneous Cellular Networks

Inter-cell interference is one of the main limiting factors in current Heterogeneous Cellular Networks (HCNs). Uplink Fractional Power Control (FPC) is a well known method that aims to cope with such limiting factor as well as to save battery live. In order to do that, the path losses associated with Mobile Terminal (MT) transmissions are partially compensated so that a lower interference is leaked towards neighboring cells. Classical FPC techniques only consider a set of parameters that depends on the own MT transmission, like desired received power at the Base Station (BS) or the path loss between the MT and its serving BS, among others. Contrary to classical FPC, in this paper we use stochastic geometry to analyze a power control mechanism that keeps the interference generated by each MT under a given threshold. We also consider a maximum transmitted power and a partial compensation of the path loss. Interestingly, our analysis reveals that such Interference Aware (IA) method can reduce the average power consumption and increase the average spectral efficiency. Additionally, the variance of the interference is reduced, thus improving the performance of Adaptive Modulation and Coding (AMC) since the interference can be better estimated at the MT.Comment: 13 pages, 1 table and 7 figures. This work has been submitted to the IEEE for possible publication. Copyright may be transferred without notice, after which this version may no longer be accessibl

Resistance acquisition after seven cycles of in vitro bleomycin exposure

Bleomycin is an antineoplastic drug that causes DNA damage by intra- and inter-strand crosslink and DNA strand breaks. This drug is used to treat several types of cancer. The aim of this work is to study the effect of Bleomycin on S. cerevisiae cells and select bleomycin-resistant cells to study the process of resistance acquisition to establish new protocols in in vitro drugs exposure.Universidad de Málaga. Campus de Excelencia Internacional Andalucía Tech

Selection of resistance to cisplatin in saccharomyces cerevisiae as a model for antineoplastic drugs studies

The budding yeast (S. cerevisiae) is an excellent eukaryotic model to study the antineoplastic drugs effects, due to the well-characterized metabolic and genetic characteristics and the conserved similarity in molecular mechanisms with other species including human cells. The aim of this work is to study the effect of cisplatin on S. cerevisiae cells and select cisplatin-resistant cells of this organism as a model of study of resistance to antineoplastic drugs.Universidad de Málaga. Campus de Excelencia Internacional Andalucía Tech

Crystallization dynamics on curved surfaces

We study the evolution from a liquid to a crystal phase in two-dimensional curved space. At early times, while crystal seeds grow preferentially in regions of low curvature, the lattice frustration produced in regions with high curvature is rapidly relaxed through isolated defects. Further relaxation involves a mechanism of crystal growth and defect annihilation where regions with high curvature act as sinks for the diffusion of domain walls. The pinning of grain boundaries at regions of low curvature leads to the formation of a metastable structure of defects, characterized by asymptotically slow dynamics of ordering and activation energies dictated by the largest curvatures of the system. These glassylike ordering dynamics may completely inhibit the appearance of the ground-state structures.Fil: García, Nicolás. Consejo Nacional de Invest.cientif.y Tecnicas. Centro Cientifico Tecnol.conicet - Bahia Blanca. Instituto de Fisica del Sur; Universidad Nacional del Sur;Fil: Vega, Daniel Alberto. Consejo Nacional de Invest.cientif.y Tecnicas. Centro Cientifico Tecnol.conicet - Bahia Blanca. Instituto de Fisica del Sur; Universidad Nacional del Sur;Fil: Gomez, Leopoldo Raimundo. Consejo Nacional de Invest.cientif.y Tecnicas. Centro Cientifico Tecnol.conicet - Bahia Blanca. Instituto de Fisica del Sur; Universidad Nacional del Sur

Eternal Sunshine of the Solar Panel

The social dynamics of residential solar panel use within a theoretical population are studied using a compartmental model. In this study we consider three solar power options commonly available to consumers: the community block, leasing, and buying. In particular we are interested in studying how social influence affects the dynamics within these compartments. As a result of this research a threshold value is determined, beyond which solar panels persist in the population. In addition, as is standard in this type of study, we perform equilibrium analysis, as well as uncertainty and sensitivity analyses on the threshold value. We also perform uncertainty analysis on the population levels of each compartment. The analysis shows that social influence plays an important role in the adoption of residential solar panels

Diferencias de género en los estilos de vida de los adolescentes

En este estudio se analizan las diferencias de género que se observan en la adolescencia con respecto a di-ferentes aspectos de los estilos de vida relacionados con la práctica de actividades físicas y deportivas, im-plicación en actividades extraescolares, utilización de las TIC, tiempo destinado a estar con los amigos y a estudiar, consumo de sustancias y rutinas relacionadas con el sueño. Para ello se han estudiado las diferen-cias por curso y sexo, en una muestra de 2400 adolescentes, 55.5% de chicas y 44.5% de chicos, con edades comprendidas entre los 12 y 17 años (media de 14.73 y deviación típica de 1.24) pertenecientes a 20 cen-tros educativos de Andalucía. Los resultados obtenidos, mediante la realización de análisis de correlaciones, ANOVA y prueba de Tukey, confirman que existen correlaciones significativas entre la mayoría de las varia-bles que conforman los estilos de vida, casi todas de tipo positivo a excepción de las relacionadas con con-sumo de sustancias en donde la mayoría fueron negativas. También se encontraron grandes diferencias de género en los estilos de vida ya que de las 15 variables analizadas 10 de ellas presentan diferencias signifi-cativas con respecto al género y una disminución significativa, con el aumento de la edad, en una serie de variables que conforman los estilos de vida saludables: práctica de la actividad física y deportiva, participa-ción en actividades extraescolares y horas de sueñoThis research analyzes gender differences observed in different aspects of adolescent lifestyles, such as physical activities and sports, involvement in extracurricular activities, use of ICT’s, time spent with friends and time spent studying, substance use, and sleep-related routines. Bearing this in mind, we analyzed differences by year and gender in a sample of 2400 adolescents, 55.5 percent girls and 44.5 percent of boys, aged between 12 and 17 (mean age =14.73 and SD = 1.24) in 20 schools from Andalusia. The results from correlation analysis, ANOVA, and Tukey test confirm significant correlations between most variables making up lifestyle, most of them positive except those related to substance use (most correlations were negative). We also found significant gender differences in lifestyles: 10 out of the 15 variables analyzed have significant gender differences. A significant negative correlation with age was found in a number of variables making up healthy lifestyles, such as the practice of sport and physical activity, participation in extracurricular activities and slee