Text mining e network science per analizzare la complessità della lettura. Principi, metodi, esperienze di applicazione.

This paper proposes some reflections concerning the practice of reading, its conceptual structure and its transformations, the blurred profile of the information ecology in which it is inserted. At the same time illustrates some outcomes of a research project conducted with tools of text mining and network science on the social reading platform aNobii. The paper presents these main topics: a) general overview of reading's context; b) short discussion reading as a complex system; c) presentation of some central concepts of network science and of its applications; d) introduction to text mining with some results of analysis of aNobii's reviews; e) conclusions and prospectives

La Rete degli editori. Modelli di text-mining e network analysis a partire dai dati di aNobii

Obiettivo di questo contributo è quello di esaminare e discutere presupposti, metodi e risultati dell’analisi di dati estratti dalla piattaforma di social reading aNobii (http://www.anobii.com/) nell’ambito del progetto “Leggere in rete. Analisi delle pratiche di lettura in ambiente digitale”, in collaborazione tra Università degli Studi di Roma La Sapienza e Università degli Studi di Torino. Qui vengono presentati in particolare i risultati relativi all’analisi degli editori a partire non dai classici dati relativi sulla produzione editoriale rilevati annualmente da Istat ma a partire dalle recensioni dei libri inserite dai lettori sulla piattaforma aNobii. La ricerca è stata condotta secondo due prospettive tra loro integrate: una orientata a definire e visualizzare, in forma di grafo, la rete degli editori, e si avvale di strumenti ed euristiche situati nel campo della network science; l’altra, a partire dalla segmentazione degli editori realizzata attraverso le metriche di rete, analizza i vocabolari relativi a ciascun editore e ne individua le specificità, attraverso le tecniche dell’analisi automatica dei testi

Layered Double Hydroxide-Based Gas Sensors for VOC Detection at Room Temperature

Miniaturized low-cost sensors for volatile organic compounds (VOCs) have the potentiality to become a fundamental tool for indoor and outdoor air quality monitoring, to significantly improve everyday life. Layered double hydroxides (LDHs) belong to the class of anionic clays and are largely employed for NOx detection, while few results are reported on VOCs. In this work, a novel LDH coprecipitation method is proposed. For the first time, a study comparing four LDHs (ZnAl−Cl, ZnFe−Cl, ZnAl−NO3, and MgAl−NO3) is carried out to investigate the sensing performances. As explored through several microscopy and spectroscopy analyses, LDHs show a morphology characterized by a large surface area and a three-dimensional hierarchical flowerlike architecture with micro- and nanopores that induce a fast diffusion and highly effective surface interaction of the target gases. The fabricated sensors, operating at room temperature, are able to reversibly and selectively detect acetone, ethanol, ammonia, and chlorine vapors, reaching significant sensing response values up to 6% at 21 °C. The results demonstrate that by changing the LDHs’ composition, it is possible to modulate the sensitivity and selectivity of the sensor, helping the discrimination of different analytes, and the consequent integration on a sensor array paves the way for electronic nose development

ECMO for COVID-19 patients in Europe and Israel

Since March 15th, 2020, 177 centres from Europe and Israel have joined the study, routinely reporting on the ECMO support they provide to COVID-19 patients. The mean annual number of cases treated with ECMO in the participating centres before the pandemic (2019) was 55. The number of COVID-19 patients has increased rapidly each week reaching 1531 treated patients as of September 14th. The greatest number of cases has been reported from France (n = 385), UK (n = 193), Germany (n = 176), Spain (n = 166), and Italy (n = 136) .The mean age of treated patients was 52.6 years (range 16–80), 79% were male. The ECMO configuration used was VV in 91% of cases, VA in 5% and other in 4%. The mean PaO2 before ECMO implantation was 65 mmHg. The mean duration of ECMO support thus far has been 18 days and the mean ICU length of stay of these patients was 33 days. As of the 14th September, overall 841 patients have been weaned from ECMO support, 601 died during ECMO support, 71 died after withdrawal of ECMO, 79 are still receiving ECMO support and for 10 patients status n.a. . Our preliminary data suggest that patients placed on ECMO with severe refractory respiratory or cardiac failure secondary to COVID-19 have a reasonable (55%) chance of survival. Further extensive data analysis is expected to provide invaluable information on the demographics, severity of illness, indications and different ECMO management strategies in these patients

Experiencias de análisis de datos: text mining y network science

Il progetto si propone di individuare nuove prospettive per lo studio dei comportamenti dei lettori attraverso l’analisi dei cosiddetti UGC, Users-Generated Content, le grandi masse di dati lasciate volontariamente dai lettori in rete. Si tratta, infatti, di un terreno complesso, fatto di dati ‘in movimento’, fluidi per definizione e inesplorati fino a questo momento rispetto all’obiettivo specifico di comprensione del significato della lettura nel contesto attuale. La conoscenza dei comportamenti di lettura di libri, infatti è ancora basata essenzialmente su indagini statistiche. Aspetti della vita quotidiana, i rapporti Censis sulla comunicazione e quelli sullo stato dell’editoria dell’AIE, le indagini Nielsen ecc. Queste ricerche ci dicono quanti italiani leggono quanti libri, di quale genere, in relazione alle principali variabili socio-demografiche e a molti altri comportamenti ma non ci consentono di dedurre il significato attribuito alla lettura di libri nel contesto delle trasformazioni tecnologiche e soprattutto cognitive in corso

La Rete degli editori. Modelli di text-mining e network analysis a partire dai dati di aNobii

Obiettivo di questo contributo è quello di esaminare e discutere presupposti, metodi e risultati dell’analisi di dati estratti dalla piattaforma di social reading aNobii (http://www.anobii.com/) nell’ambito del progetto “Leggere in rete. Analisi delle pratiche di lettura in ambiente digitale”, in collaborazione tra Università degli Studi di Roma Sapienza e Università degli Studi di Torino. Qui vengono presentati in particolate i risultati relativi all’analisi degli editori a partire non dai classici dati relativi sulla produzione editoriale rilevati annualmente da Istat ma a partire dalle recensioni dei libri lasciare dai lettori sulla piattaforma aNobii. La ricerca è stata condotta secondo due prospettive tra loro integrate: una orientata a definire e visualizzare, in forma di grafo, la rete, degli editori, e si avvale di strumenti ed euristiche situati nel campo della network science; l’altra, a partire dalla segmentazione degli editori realizzata attraverso le metriche di rete, analizza i vocabolari relativi a ciascun editore e ne individua le specificità, attraverso le tecniche dell’analisi automatica dei testi

Análisis de la rentabilidad de la producción de Flor de Jamaica (Hibiscus Sabdariffa).

Roselle (Hibiscus Sabdariffa) is a crop, from Tropical Africa, that has therapeutic, medicinal and nutritional properties. The main production of Roselle in Mexico takes place in the states of Guerrero and Oaxaca. This document analyses the production costs, income and profitability indicators of Roselle cultivation in the municipality of Santo Domingo de Morelos in the state of Oaxaca (Mexico). A methodology based on cost-benefit analysis and profitability was used during the research process. The evidence found as a result of the financial indicators analyzed shows that the value of the benefit-cost ratio is greater than one, with a profit greater than zero and the value obtained for the break-even point was less than the production obtained. The research findings allow to conclude that the cultivation of Roselle is profitable given its production characteristics in the area.La flor de Jamaica (Hibiscus Sabdariffa) es un cultivo que tiene propiedades terapéuticas, medicinales y nutricionales, y es originaria de África tropical. Los principales estados productores de flor de Jamaica en México son Guerrero y Oaxaca. El presente documento analiza los costos de producción, los ingresos y los indicadores de rentabilidad del cultivo de la flor de Jamaica en el municipio de Santo Domingo de Morelos del estado de Oaxaca (México). Se utilizó la metodología para la realización de estudios de costos y rentabilidad agrícola. Se encuentra evidencia sobre los indicadores financieros analizados: el valor de la relación beneficio-costo es mayor a uno, con una ganancia mayor a cero y el valor obtenido para el punto de equilibrio fue menor a la producción obtenida. Los resultados obtenidos permiten concluir que el cultivo de flor de Jamaica es rentable dadas sus características de producción en la zona

Análisis de la rentabilidad de la producción de Flor de Jamaica (Hibiscus Sabdariffa)

Roselle (Hibiscus Sabdariffa) is a crop, from Tropical Africa, that has therapeutic, medicinal and nutritional properties. The main production of Roselle in Mexico takes place in the states of Guerrero and Oaxaca. This document analyses the production costs, income and profitability indicators of Roselle cultivation in the municipality of Santo Domingo de Morelos in the state of Oaxaca (Mexico). A methodology based on cost-benefit analysis and profitability was used during the research process. The evidence found as a result of the financial indicators analyzed shows that the value of the benefit-cost ratio is greater than one, with a profit greater than zero and the value obtained for the break-even point was less than the production obtained. The research findings allow to conclude that the cultivation of Roselle is profitable given its production characteristics in the area.La flor de Jamaica (Hibiscus Sabdariffa) es un cultivo que tiene propiedades terapéuticas, medicinales y nutricionales, y es originaria de África tropical. Los principales estados productores de flor de Jamaica en México son Guerrero y Oaxaca. El presente documento analiza los costos de producción, los ingresos y los indicadores de rentabilidad del cultivo de la flor de Jamaica en el municipio de Santo Domingo de Morelos del estado de Oaxaca (México). Se utilizó la metodología para la realización de estudios de costos y rentabilidad agrícola. Se encuentra evidencia sobre los indicadores financieros analizados: el valor de la relación beneficio-costo es mayor a uno, con una ganancia mayor a cero y el valor obtenido para el punto de equilibrio fue menor a la producción obtenida. Los resultados obtenidos permiten concluir que el cultivo de flor de Jamaica es rentable dadas sus características de producción en la zona