The Labor Market Return to an Attractive Face: Evidence from a Field Experiment

We provide new evidence on the link between beauty and hiring practices in the labor market. Specifically, we study if people with less attractive faces are less likely to be contacted after submitting a resume. Our empirical strategy is based on an experimental approach. We sent fictitious resumes with pictures of attractive and unattractive faces to real job openings in Buenos Aires, Argentina. We find that attractive people receive 36 percent more responses (callbacks) than unattractive people. Given the experimental design, this difference can be attributed to the exogenous manipulation of facial attractiveness of our fake job applicants.facial attractiveness, callback rates, labor market discrimination

TRANSTENSIVE ORIGIN OF THE ENCADENADAS-VALLIMANCA CORRIDOR (BUENOS AIRES, ARGENTINA): A REVISION AND A NEW PROPOSAL FROM SATELLITE IMAGES: Origem transtensiva do Corredor Encadenadas-Vallimanca (Buenos Aires, Argentina): uma revisão e uma nova proposta a partir de imagens de satélite

The Encadenadas-Vallimanca Corridor (EVC) corresponds to a morphostructural linear feature defining the northern boundary of the Sierra de la Ventana and Tandil hills in the Buenos Aires province. The scarcity of concluding geological studies has resulted in diverse tectonic and hydrographic interpretations regarding the genesis of the corridor. A new analysis of surface morphology, mainly derived from satellite imagery, led to the identification of a series of gentle and elongated en échelon left-stepping relief features or ridges with cross-sectional asymmetric flanks, having an average length of 20 km and oriented sub-latitudinally at 20° to the ENE strike of the corridor. The arrangement of these ridges reminds a tectonic scenario of right-lateral transcurrent faulting, for which, the limiting parallel faults fulfill the function of synthetic Riedel type shear. Besides, the cross-sectional asymmetry of the ridges suggests extensional normal faulting coherent with a transtensional right-lateral flower structure. Shallow seismicity of Mw 4.0 registered by the year 2016 in the proximities of the lineament could suggest recent fault activity. Also, previous gravity potential field mapping in the area seems to highlight basement anomalies underneath the sedimentary cover, coinciding with the main lineament of the Corridor. Based on all this information, the EVC is considered to be the surface expression of dextral transtensional fault activity.El Corredor Encadenadas-Vallimanca (EVC) corresponde a una característica lineal morfoestructural que define el límite norte de la Sierra de la Ventana y las colinas de Tandil en la provincia de Buenos Aires. La escasez de concluir estudios geológicos ha dado lugar a diversas interpretaciones tectónicas e hidrográficas con respecto a la génesis del corredor. Un nuevo análisis de la morfología de la superficie, derivado principalmente de imágenes satelitales, condujo a la identificación de una serie de características o crestas de relieve escalonadas suaves y alargadas en escalón con flancos asimétricos de sección transversal, que tienen una longitud promedio de 20 km y orientación sub -latitudinalmente a 20 ° a la huelga ENE del corredor. La disposición de estas crestas recuerda un escenario tectónico de fallas transcurrentes en el lado derecho, para las cuales las fallas paralelas limitantes cumplen la función de corte sintético tipo Riedel. Además, la asimetría de la sección transversal de las crestas sugiere fallas extensionales normales coherentes con una estructura floral transtensional lateral derecha. La sismicidad superficial de Mw 4.0 registrada para el año 2016 en las proximidades del lineamiento podría sugerir actividad de falla reciente. Además, el mapeo de campo potencial de gravedad anterior en el área parece resaltar las anomalías del sótano debajo de la cubierta sedimentaria, coincidiendo con el lineamiento principal del Corredor. En base a toda esta información, el EVC se considera la expresión superficial de la actividad de falla transtensional dextral.O corredor Encadenadas-Vallimanca (EVC) corresponde a uma característica linear morfoestrutural que define o limite norte das montanhas Sierra de la Ventana e Tandil, na província de Buenos Aires. A escassez de concluir estudos geológicos resultou em diversas interpretações tectônicas e hidrográficas sobre a gênese do corredor. Uma nova análise da morfologia da superfície, derivada principalmente de imagens de satélite, levou à identificação de uma série de características ou sulcos suaves e alongados de relevo em échelon, com flancos assimétricos de seção transversal, com um comprimento médio de 20 km e submarinos orientados -latitudinalmente a 20 ° em relação à batida ENE do corredor. O arranjo dessas cordilheiras lembra um cenário tectônico de falha por corrente contínua lateral direita, para a qual as falhas paralelas limitantes cumprem a função de cisalhamento sintético do tipo Riedel. Além disso, a assimetria de seção transversal das cristas sugere falha normal extensional coerente com uma estrutura de flor lateral direita e transtensional. A sismicidade rasa de Mw 4.0 registrada até o ano de 2016 nas proximidades do lineament pode sugerir atividade recente de falha. Além disso, o mapeamento de campo potencial potencial gravitacional anterior na área parece destacar anomalias no subsolo sob a cobertura sedimentar, coincidindo com o principal lineamento do corredor. Com base em todas essas informações, o EVC é considerado a expressão superficial da atividade de falha transtensional dextral

Impacto Transmicable

The problem of mobility is one of the many issues that arise in cities. For this reason, territorial planning and how to get around is a fundamental pillar for the construction of society. In Bogotá (Colombia) the issue of mobility is very complex, especially in the most remote neighborhoods. The integrated Transmilenio system tries to control the problem, however, several factors such as population growth with an average of 1.87% per year reduce its capacity. This expansion significantly affects the environment, increases congestion, the accident rate, and creates an inability of movement and accessibility. The implementation of new transportation systems is a relevant factor for proper functioning. Projects such as the Transmicable not only provide a solution to the mobility issue but also have constructions with social benefits.El problema de la movilidad es uno de los tantos que se presentan en las ciudades. Por ello la planeación del territorio y el cómo transportarse es un pilar fundamental para la construcción de sociedad. En Bogotá (Colombia) el tema de la movilidad es muy complejo, sobre todo en los barrios más alejados. El sistema integrado de Transmilenio trata de controlar el problema, sin embargo varios factores como el crecimiento de la población con un promedio de 1.87% por año reducen su capacidad. Esta expansión afecta significativamente el medio ambiente, aumenta la congestión, la tasa de accidentes, y crea incapacidad de movimiento y accesibilidad. La implementación de nuevos sistemas de transporte es un factor relevante para el buen funcionamiento. Proyectos como el Transmicable no solo da solución al tema de movilidad sino que además cuenta con construcciones con beneficio social

Vertical Elasticity on Marathon and Chronos Mesos frameworks

[EN] Marathon and Chronos are two popular Mesos frameworks that are widely used for deploying fault-tolerant services and periodic batch jobs. Marathon and Chronos provide by design mechanisms for horizontal elasticity, scaling up and down the number of job and service instances. Horizontal elasticity is appropriate when the problems that are solved are inherently parallel. However, when the problem cannot benefit from an increase of the amount of resources, vertical elasticity must be considered. This work implements on top of Marathon and Chronos Mesos frameworks, a mechanism to vary the resources associated to an executor dynamically, according to its progress and considering specific Quality of Service (QoS). The mechanism developed provides a wrapper executable and a service that takes the decision of increasing or decreasing the resources allocated to different Chronos iterations or a long-living Marathon application. The mechanism makes use of checkpointing techniques to preserve the execution of Marathon applications and leverages OpenStack Monasca for the monitoring. \footnote{The work in this article has been funded by projects BIGCLOE and EUBra-BIGSEA, BIGLOE is funded by the Spanish ``Ministerio de Econom\'ia, Industria y Competitividad" with reference number TIN2016-79951-R and EUBra-BIGSEA is funded jointly by the European Commission under the Cooperation Programme, Horizon 2020 grant agreement No 690116 and the Brazilian Ministério de Ciência, Tecnologia e Inovação (MCTI).The work in this article has been funded by projects BIGCLOE and EUBra BIGSEA, BIGLOE is funded by the Spanish "Ministerio de Economia, Industria y Competitividad" with reference number TIN2016-79951-R and EUBra-BIGSEA is funded jointly by the European Commission under the Cooperation Programme, Horizon 2020 grant agreement No 690116 and the Brazilian Ministerio de Ciencia, Tecnologia e Inovacao (MCTI).López-Huguet, S.; Natanael, I.; Brito, A.; Blanquer Espert, I. (2019). Vertical Elasticity on Marathon and Chronos Mesos frameworks. Journal of Parallel and Distributed Computing. 133:179-192. https://doi.org/10.1016/j.jpdc.2019.01.002S17919213

Large deviations of the stationary measure of networks under proportional fair allocations

We address a conjecture introduced by Massouli\'e (2007), concerning the large deviations of the stationary measure of bandwidth-sharing networks functioning under the Proportional fair allocation. For Markovian networks, we prove that Proportional fair and an associated reversible allocation are geometrically ergodic and have the same large deviations characteristics using Lyapunov functions and martingale arguments. For monotone networks, we give a more direct proof of the same result relying on stochastic comparisons that hold for general service requirement distribution. These results comfort the intuition that Proportional fairness is 'close' to allocations of service being insensitive to the service time requirement

Understanding the twist-bend nematic phase: the characterisation of 1-(4-cyanobiphenyl-4'-yloxy)-6-(4-cyanobiphenyl-4'--yl)hexane (CB6OCB) and comparison with CB7CB

The synthesis and characterisation of the nonsymmetric liquid crystal dimer, 1-(4-cyanobiphenyl-40-yloxy)-6- (4-cyanobiphenyl-40-yl)hexane (CB6OCB) is reported. An enantiotropic nematic (N)–twist-bend nematic (NTB) phase transition is observed at 109 1C and a nematic–isotropic phase transition at 153 1C. The NTB phase assignment has been confirmed using polarised light microscopy, freeze fracture transmission electron microscopy (FFTEM), 2H-NMR spectroscopy, and X-ray diffraction. The effective molecular length in both the NTB and N phases indicates a locally intercalated arrangement of the molecules, and the helicoidal pitch length in the NTB phase is estimated to be 8.9 nm. The surface anchoring properties of CB6OCB on a number of aligning layers is reported. A Landau model is applied to describe high-resolution heat capacity measurements in the vicinity of the NTB–N phase transition. Both the theory and heat capacity measurements agree with a very weak first-order phase transition. A complementary extended molecular field theory was found to be in suggestive accord with the 2H-NMR studies of CB6OCB-d2, and those already known for CB7CB-d4. These include the reduced transition temperature, TNTBN/TNI, the order parameter of the mesogenic arms in the N phase close to the NTB–N transition, and the order parameter with respect to the helix axis which is related to the conical angle for the NTB phase.Postprint (published version

Dense circum-nuclear molecular gas in starburst galaxies

We present results from a study of the dense circum-nuclear molecular gas of starburst galaxies. The study aims to investigate the interplay between starbursts, active galactic nuclei and molecular gas. We characterise the dense gas traced by HCN, HCO$^{+}$ and HNC and examine its kinematics in the circum-nuclear regions of nine starburst galaxies observed with the Australia Telescope Compact Array. We detect HCN (1$-$0) and HCO$^{+}$ (1$-$0) in seven of the nine galaxies and HNC (1$-$0) in four. Approximately 7 arcsec resolution maps of the circum-nuclear molecular gas are presented. The velocity integrated intensity ratios, HCO$^{+}$ (1$-$0)/HCN (1$-$0) and HNC (1$-$0)/HCN (1$-$0), are calculated. Using these integrated intensity ratios and spatial intensity ratio maps we identify photon dominated regions (PDRs) in NGC 1097, NGC 1365 and NGC 1808. We find no galaxy which shows the PDR signature in only one part of the observed nuclear region. We also observe unusually strong HNC emission in NGC 5236, but it is not strong enough to be consistent with X-ray dominated region (XDR) chemistry. Rotation curves are derived for five of the galaxies and dynamical mass estimates of the inner regions of three of the galaxies are made.Comment: Accepted for publication in MNRAS, 22 December 2015. Main manuscript is 13 pages, containing 3 figures. Also has 4 appendices of 13 pages total containing numerous figures and details of calculation

Processing of Agilent microRNA array data

<p>Abstract</p> <p>Background</p> <p>The Agilent microRNA microarray platform interrogates each microRNA with several copies of distinct oligonucleotide probes and integrates the results into a total gene signal (TGS), using a proprietary algorithm that makes use of the background subtracted signal. The TGS can be normalized between arrays, and the Agilent recommendation is either not to normalize or to normalize to the 75^thpercentile signal intensity. The <it>robust multiarray average algorithm </it>(RMA) is an alternative method, originally developed to obtain a summary measure of mRNA Affymetrix gene expression arrays by using a linear model that takes into account the probe affinity effect. The RMA method has been shown to improve the accuracy and precision of expression measurements relative to other competing methods. There is also evidence that it might be preferable to use non-corrected signals for the processing of microRNA data, rather than background-corrected signals. In this study we assess the use of the RMA method to obtain a summarized microRNA signal for the Agilent arrays.</p> <p>Findings</p> <p>We have adapted the RMA method to obtain a processed signal for the Agilent arrays and have compared the RMA summarized signal to the TGS generated with the image analysis software provided by the vendor. We also compared the use of the RMA algorithm with uncorrected and background-corrected signals, and compared quantile normalization with the normalization method recommended by the vendor. The pre-processing methods were compared in terms of their ability to reduce the variability (increase precision) of the signals between biological replicates. Application of the RMA method to non-background corrected signals produced more precise signals than either the RMA-background-corrected signal or the quantile-normalized Agilent TGS. The Agilent TGS normalized to the 75% percentile showed more variation than the other measures.</p> <p>Conclusions</p> <p>Used without background correction, a summarized signal that takes into account the probe effect might provide a more precise estimate of microRNA expression. The variability of quantile normalization was lower compared with the normalization method recommended by the vendor.</p

Bibliografìa Argentina del género Prochilodus (Pisces: Curimatidae)

Fil: López, Hugo Luis. División Zoología Vertebrados, Museo de La Plata, UNLPFil: Bonetto, Argentino A.. Museo Argentino de Ciencias Naturales Bernardino Rivadavia; Buenos AiresFil: Gómez, Sergio E.. División Zoología Vertebrados, Museo de La Plata, UNLPFil: Protogino, Lucila Cristina. División Zoología Vertebrados, Museo de La Plata, UNL