Developing a thermal confort index for vegetated open space in cities of arid zones

The degree of thermal comfort that people experience in open spaces is one of the determinants for use, especially in areas with extreme climates. It has a wide range of indices in the international literature. However, the study of five indices (THI, PE, TS, PMV and COMFA) regarding subjective responses presented low percentages of predictive successes in the city of study, characterized by an arid climate and intense urban vegetation. Therefore, the aim of this work is to develop a new thermal comfort index to predict more accurately the thermal sensation of the local residents. For this, there were campaigns monitoring of microclimatic parameters and field surveys about the real sensation of the people on a pedestrian street of Mendoza Metropolitan Area (MMA) in both winter and summer. The proposed new model is established through the correlation of environmental variables and individual subjective responses. The multivariate correlation is performed by linear regression. The theory of Akaike´s information is used as criterion to model selection. The new model IZA is a lineal relation of air temperature, relative humidity, wind speed and solar radiation, generally all available weather variables. We found a high correlation between subjective responses and the new model. Besides the Pearson coefficient which gives the new index is higher than other traditional indices evaluated. The percentage of success of the new index exceeds 85%, demonstrating the effectiveness of the proposed model. In conclusion, the use of IZA as a predictor of thermal comfort will allow a fair assessment of the effect of design and composition of space on your comfort conditions, without the need to carry out thermal perception surveys. This will facilitate the evaluation and decision-making regarding the thermal rehabilitation of open spaces.Fil: Ruiz, María Angélica. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Mendoza. Instituto de Ciencias Humanas, Sociales y Ambientales; ArgentinaFil: Correa Cantaloube, Erica Norma. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Mendoza. Instituto de Ciencias Humanas, Sociales y Ambientales; Argentin

Extracurricular Program for Girls to Improve Competencies and Self-Concept in Science and Technology

The gender gap in STEM areas is still a reality that constitutes a global concern. Many initiatives have sought to strengthen the scientific-technological aspirations of girls, among them extracurricular programs such as the one we present here. Its design is based on the available scientific evidence to promote female interest and self-concept in those areas. In this study, we analyze the impact of the extracurricular activities on the development of competencies and perceptive selfevaluation skills among eight girls aged between 8 and 11 years old regarding science and technology. The results showed the effectiveness of the extracurricular activities both for the development of skills and for the improvement of levels of self-concept, interest, and participation, which leads us to highlight the need to promote initiatives of this sort in order to overcome gender stereotypes and to achieve equality.This research was funded by Spanish Foundation for Science and Technology, grant number FCT-19-15075

Low Complexity Maximum-Likelihood Detector for DSTTD Architecture Based on the QRD-M Algorithm

This paper presents a new decoder algorithm for the double space-time transmit diversity (DSTTD) system. The decoder is based on the QRD-M algorithm, which performs a breadth-first search of possible solutions tree. The search is simplified by skipping unlikely candididates, and it is stopped when no promising candidates are left. Furthermore, the search is divided into three concurrent iterations, making possible a fast, parallel implementation either in hardware or software. After presenting an analysis of the capacity and diversity of DSTTD, we present performance results showing that the proposed decoder is capable of achieving near maximum likelihood performance. We also show that the proposed algorithm exhibits lower computational complexity than other existing maximum likelihood detectors

First records of oribatid mites (Acari: Oribatida) from Nothofagus pumilio forests in Patagonian region, Chubut, Argentina

Se informan diecinueve primeros registros de ácaros oribátidos en suelosde bosques de lenga de la provincia de Chubut, Patagonia argentina. Los mismospertenecen a los géneros Loftacarus, Liochthonius, Sellnickochthonius, Trichthonius,Austrocarabodes, Maculobates, Tectocepheus, Austroppia, Brachioppiella, Pletzenoppia,Globoppia, Lanceoppia, Membranoppia, Graptoppia, Oppiella, Neoameroppia,Subiasella, Suctobelbella y Pheroliodes. Las especies Suctobelbella pseudomatissimay Pheroliodes roblensis se mencionan por primera vez de la Argentina.Nineteen new records of soil oribatid mites from lenga forest in Chubut, Patagonia Argentina are informed. The new species registered belong to the genera Loftacarus, Liochthonius, Sellnickochthonius, Trichthonius, Austrocarabodes, Maculobates, Tectocepheus, Austroppia, Brachioppiella, Pletzenoppia, Globoppia, Lanceoppia, Membranoppia, Graptoppia, Oppiella, Neoameroppia, Subiasella, Suctobelbella and Pheroliodes. Suctobelbella pseudornatissima and Pheroliodes roblensis are mentioned for the first time from Argentina.Fil: Ruiz, Erica Vanesa Ruiz. Universidad Nacional de la Patagonia "San Juan Bosco". Facultad de Ciencias Naturales - Sede Esquel. Laboratorio de Investigaciones en Evolución y Biodiversidad; ArgentinaFil: Rizzuto, Susana. Universidad Nacional de la Patagonia "San Juan Bosco". Facultad de Ciencias Naturales - Sede Esquel. Laboratorio de Investigaciones en Evolución y Biodiversidad; ArgentinaFil: Martínez, Pablo Antonio. Universidad Nacional de Mar del Plata. Facultad de Ciencias Exactas y Naturales. Departamento de Biología; Argentin

Suitable configurations for forested urban canyons to mitigate the UHI in the city of Mendoza, Argentina

Urban heat island is a phenomenon that affects residential energy consumption, air quality and outdoor comfort, among others. This work focuses on the semi-arid city of Mendoza, Argentina defined by its wide and tree-lined streets. Our research aims to define and quantify which urban variables-urban forest, morphological, material and microclimatic-determine day and nighttime air temperatures and to identify the best urban configuration. For this purpose, we took measurements and a field survey during the summer in 19 representative urban canyons. The obtained data were processed by Principal Component Analysis and Multiple Linear Regressions. Two models (RMSE of 2.51% and 0.93%) and eight morphological expressions were obtained. The results show that daytime air temperature is more sensitive to the changes of urban variables than nighttime: 6.8 and 3.5 °C, respectively. For newer urban developments, low density configurations have the coolest performance in both periods. But, in high building densities, there is no single configuration that offers the best thermal performance for both periods. In addition, we conclude that the proper selection of materials is a good strategy. These results are useful for urban planners in order to allow them to design and renovate the city concerning thermal behavior.Fil: Ruiz, María Angélica. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Mendoza. Instituto de Ciencias Humanas, Sociales y Ambientales; ArgentinaFil: Sosa, María Belén. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Mendoza. Instituto de Ciencias Humanas, Sociales y Ambientales; ArgentinaFil: Correa Cantaloube, Erica Norma. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Mendoza. Instituto de Ciencias Humanas, Sociales y Ambientales; ArgentinaFil: Canton, Maria Alicia. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Mendoza. Instituto de Ciencias Humanas, Sociales y Ambientales; Argentin

Correlation Between Endoglin and Malignant Phenotype in Human Melanoma Cells: Analysis of hsa-mir-214 and hsa-mir-370 in Cells and Their Extracellular Vesicles.

Endoglin (CD105) is an auxiliary receptor of transforming growth factor (TGF)-β family members that is expressed in human melanomas. It is heterogeneously expressed by primary and metastatic melanoma cells, and endoglin targeting as a therapeutic strategy for melanoma tumors is currently been explored. However, its involvement in tumor development and malignancy is not fully understood. Here, we find that endoglin expression correlates with malignancy of primary melanomas and cultured melanoma cell lines. Next, we have analyzed the effect of ectopic endoglin expression on two miRNAs (hsa-mir-214 and hsa-mir-370), both involved in melanoma tumor progression and endoglin regulation. We show that compared with control cells, overexpression of endoglin in the WM-164 melanoma cell line induces; (i) a significant increase of hsa-mir-214 levels in small extracellular vesicles (EVs) as well as an increased trend in cells; and (ii) significantly lower levels of hsa-mir-370 in the EVs fractions, whereas no significant differences were found in cells. As hsa-mir-214 and hsa-mir-370 are not just involved in melanoma tumor progression, but they can also target endoglin-expressing endothelial cells in the tumor vasculature, these results suggest a complex and differential regulatory mechanism involving the intracellular and extracellular signaling of hsa-mir-214 and hsa-mir-370 in melanoma development and progression.S

Relación entre valor compartido y sostenibilidad en la empresa 111 Consulting Group SRL, Cajamarca, 2020

El objetivo de este trabajo es determinar la relación entre el valor compartido y la sostenibilidad en la empresa 111 Consulting Group SRL, Cajamarca, 2020. Por consecuente, se considera a la información relevante, fidedigna y básica debido a que se busca aumentar y verificar objetivamente los conocimientos en cuanto a las dimensiones de las variables en estudio y la manera como se relacionan con el valor compartido y la sostenibilidad en la empresa 111 Consulting Group SRL, según la percepción de estos. La investigación se muestra un diseño no experimental, correlacional de acuerdo con que se mide el grado de relación que existe entre Valor Compartido y Sostenibilidad en la empresa 111 Consulting Group SRL, Cajamarca, 2020

Relación entre valor compartido y sostenibilidad en la empresa 111 Consulting Group SRL, Cajamarca, 2020

El presente trabajo de investigación titulado “Relación entre valor compartido y sostenibilidad en la empresa 111 Consulting Group SRL, Cajamarca, 2020”, se obtuvo como objetivo determinar la relación entre el valor compartido y la sostenibilidad en la empresa 111 Consulting Group SRL. La investigación fue de tipo básica- teórica, nivel correlacional, diseño no experimental - transversal. La muestra del estudio fue a 30 colaboradores. Los resultados señalan que las variables sometidas a la prueba estadística de Pearson, obtuvo un coeficiente de correlación de 0,971, la cual implica una correlación positiva muy fuerte y el nivel de significancia bilateral=0,000 evidenciando estadísticamente la aceptación de la hipótesis alternativa. Una organización enfocada al Valor Compartido tiene una mayor posibilidad de ser rentable y sostenible a largo plazo