remote sensing supports the definition of the water quality status of lake omodeo italy

AbstractLake Omodeo is the largest artificial reservoir of Sardinia and its waters are a valuable resource for irrigation, domestic and industrial purposes. Lake Omodeo has serious problems of eutrophication. Since 2007 the local water authority has been undertaken a monitoring program designed to test an integrated methodology based on field measurements and remote sensing. This study illustrates the production of multitemporal spatialised maps of chlorophyll-a concentrations from satellite data acquired from Medium Resolution Imaging Spectrometer (MERIS). The analysis confirmed the eutrophic status of Omodeo. especially between spring and summer (mainly due to cyanobacteria bloom) assessing their dependency on weather conditions and river inputs

Osservazione delle zone marine costiere da dati ottici multi-sensore: il caso studio della foce del Volturno

Questo lavoro s’inserisce nell’ambito del progetto bandiera RITMARE (Ricerca ITaliana per il MARE, 2012-2016, MIUR-CNR) che ha lo scopo di studiare, monitorare, gestire e valorizzare la risorsa marina in Italia. A tale fine il telerilevamento è parte integrante al progetto che, in questo studio, viene applicato alla fascia costiera della foce del Volturno. Lo studio si avvale dell’utilizzo di immagini satellitari (RapidEye (2013) e Landsat-8 OLI (2014)) e aviotrasportate (MIVIS (2011)). A supporto dell’analisi delle immagini sono state acquisite misure in-situ di riflettanza e di concentrazione dei seguenti parametri: clorofilla-a (Chl-a), sedimenti totali sospesi (TSM) e sostanza organica colorata disciolta (CDOM) durante una campagna svoltasi in agosto 2014. I dati telerilevati, geocodificati e co-registrati, sono stati pre-elaborati per correggere gli effetti radiometrici ed atmosferici. Le immagini sono state successivamente elaborate per classificare le acque marino-costiere secondo diversi gradi di complessità ottica e per produrre mappe di concentrazione di Chl-a, TSM e CDOM. In particolare, per la generazione delle mappe è stato applicato un approccio semi-empirico basato su analisi di correlazione dei dati in-situ; in particolare tra valori spettrali di riflettanza (es. rapporti di banda) e le corrispondenti misure di concentrazione di Chl-a, TSM e CDOM. I risultati mostrano un gradiente crescente di complessità ottica delle acque spostandosi dalle zone pelagiche verso le aree costiere. In queste aree l’analisi del dato OLI ha mostrato una variabilità spaziale di Chl-a, TSM e CDOM imputabile ai regimi idrologici del fiume Volturno

Teacher training for professional education through a course of extension on emerging Technologies with open schooling

This article explores the "open schooling" promoted by the European Union, whose focus is formal, non-formal and informal co-learning through cooperation between students, scientists and communities to solve real-life problems aiming at professional socio-scientific education, and responsible citizenship. The aim of this study was to understand the practices, strategies and needs of teachers interested in educational innovation with emerging technologies and open schooling. The mixed methods methodology was supported by a semi-structured reflexive instrument of the open schooling project CONNECT. Its aim is to empower youth supported by responsible research and innovation science-action and ‘emancipatory fun’ – intrinsic enjoyment for learning. Participants were 34 teachers of secondary schools including professional, technical and vocational education in Brazil who completed an extension course on the use of emerging technologies. The results highlight several challenges for teachers still focused on traditional transmissive teaching. These include teaching research skills with real-life problems; help students generate questions with evidence-based insights; assess how well students use evidence to form an argument and craft scientific narratives and promote discussion of science in society in the classroom. In addition, four teachers' teaching and learning strategies need to become more frequent so that students can: raise scientific questions about the topic addressed; develop collaborative research project; use collaborative role-playing games and dialogue on current scientific issues

multitemporal analysis of algal blooms with meris images in a deep meromictic lake

MERIS images (2003-2011) were used to detect algal bloom events in Lake Idro (Northern Italy) applying a semi-empirical algorithm. From the study of an intense phenomenon occurred in late summer 2010, a retrospective analysis of similar events during late summer/ early autumn period was performed. High intra- and inter-annual variability was observed and three additional bloom events were identified on 2003, 2005 and 2008. Hydrological and weather parameters were examined at different temporal intervals (August-October, September-October and monthly from August to October) to investigate the regulating factors of bloom incidence. Rather low temperatures and the persistence of clouds seem t

Estudio de mejora en un proceso de producción de calcetines en la empresa Solara S. A. C.

En la actualidad, las empresas buscan implementar técnicas o herramientas que ayuden en sus procesos a obtener un correcto funcionamiento de tal manera que se puedan volver más productivos y disminuir sobrecostos. En el presente trabajo se presentará una investigación de mejora aplicada a un sistema productivo de fabricación de calcetines, en el cual se evaluarán técnicas de lean manufacturing con la finalidad de hallar la adecuada para la empresa de acuerdo con los problemas encontrados entre los cuales se encuentran problemas de ergonomía, orden y limpieza en el área de trabajo, pérdida de tiempo por desorden, incumplimiento en el plan de producción, entre otros. Teniendo en cuenta los problemas encontrados en la empresa se procedió a realizar diferentes procedimientos de selección obteniendo como posible solución 5S como la técnica lean a implementar, con la finalidad de reducir el porcentaje de defectuosos, aumentar la producción de acabados, disminuir la cantidad de accidentes y aminorar el tiempo perdido por desorden de los operarios, optimizar la eficacia, entre otros. Una vez finalizada la implementación se obtendrá, en un escenario conservador, un VAN de S/ 4 945 a una tasa de descuento de 15%, y un TIR de 3%, esta inversión se recuperará en un tiempo de 17 meses; asimismo, se obtendrá un Beneficio-Costo de 1,28.Nowadays companies seek to implement techniques or tools that help in their processes to obtain a correct operation in such a way that they can become more productive and reduce cost overruns. In the present work will show an investigation of improvement applied to a productive system of manufacture of socks, in which lean manufacturing techniques will be evaluated in order to find the right one for the company according to the problems found which are problems of ergonomics, order and cleanliness in the work area, loss of time due to disorder, non-compliance with the production plan, among others. Considering the problems found in the company, we proceeded to carry out different selection procedures, obtaining as a possible solution 5S as the lean technique to be implemented, with the aim of reducing the percentage of defectives, increase the production of finishes, reduce the number of accidents and reduce the time lost due to the disorder of the operators, optimize efficiency, among others. Once the implementation is completed, in a conservative scenario, a NPV of S / 4 945 will be obtained at a discount rate of 15%, and an IRR of 36%, this investment will be recovered in a time of 17 months; likewise, a Benefit-Cost of 1,17 will be obtained

Measuring freshwater aquatic ecosystems: The need for a hyperspectral global mapping satellite mission

AbstractFreshwater ecosystems underpin global water and food security, yet are some of the most endangered ecosystems in the world because they are particularly vulnerable to land management change and climate variability. The US National Research Council's guidance to NASA regarding missions for the coming decade includes a polar orbiting, global mapping hyperspectral satellite remote sensing mission, the Hyperspectral Infrared Imager (HyspIRI), to make quantitative measurements of ecosystem change. Traditionally, freshwater ecosystems have been challenging to measure with satellite remote sensing because they are small and spatially complex, require high fidelity spectroradiometry, and are best described with biophysical variables derived from high spectral resolution data. In this study, we evaluate the contribution of a hyperspectral global mapping satellite mission to measuring freshwater ecosystems. We demonstrate the need for such a mission, and evaluate the suitability and gaps, through an examination of the measurement resolution issues impacting freshwater ecosystem measurements (spatial, temporal, spectral and radiometric). These are exemplified through three case studies that use remote sensing to characterize a component of freshwater ecosystems that drive primary productivity. The high radiometric quality proposed for the HyspIRI mission makes it uniquely well designed for measuring freshwater ecosystems accurately at moderate to high spatial resolutions. The spatial and spectral resolutions of the HyspIRI mission are well suited for the retrieval of multiple biophysical variables, such as phycocyanin and chlorophyll-a. The effective temporal resolution is suitable for characterizing growing season wetland phenology in temperate regions, but may not be appropriate for tracking algal bloom dynamics, or ecosystem responses to extreme events in monsoonal regions. Global mapping missions provide the systematic, repeated measurements necessary to measure the drivers of freshwater biodiversity change. Archival global mapping missions with open access and free data policies increase end user uptake globally. Overall, an archival, hyperspectral global mapping mission uniquely meets the measurement requirements of multiple end users for freshwater ecosystem science and management

Influencia del museo de sitio Puruchuco en la enseñanza de la historia local del distrito de Ate: Estudio de caso entre docentes de tres instituciones educativas

La investigación realizada busca describir y comparar el conocimiento que posee en los docentes la perspectiva sobre el museo de sitio Puruchuco de Ate-Vitarte, para la enseñanza de la historia local de su distrito. Por ello la investigación se realizó en diferentes instituciones educativas ubicadas en lugares próximos al museo de sitio de Puruchuco. Haciendo uso del enfoque cualitativo de investigación, en su variante, estudio de caso, en la cual exploramos una muestra de 28 docentes de ciencias sociales de tres instituciones educativas nacionales de nivel secundario, ubicados en diferentes zonas y características socioculturales del distrito de Ate-Vitarte, La muestra de estudio comprendió a 11 docentes de ciencias sociales de la institución educativa Julio Cesar Tello, 3 docentes de ciencias sociales de la institución educativa Puruchuco y 14 docentes de ciencias sociales de la institución educativa Edelmira del Pando, que pertenecen en el ámbito de la UGEL N° 06 de Ate Vitarte. Los instrumentos aplicados fueron encuestas y entrevistas, dirigida a los docentes de ciencias sociales para medir el nivel de información y conocimiento sobre el museo de sitio Puruchuco, así mismo la enseñanza local, llegando a lo siguiente: Se comprobó que los docentes se ubicaron en un nivel medio referente a la identificación y conocimiento del museo de sitio de Puruchuco y su enseñanza local

Sensibilidade do linkage probabilístico na identificação de nascimentos informados: estudo Pró-Saúde

O objetivo do estudo foi avaliar a sensibilidade do método de linkage probabilístico de registros na identificação de nascimentos de coorte. Foram utilizados dados da população do Estudo Pró-Saúde, um estudo com funcionários técnico-administrativos do quadro efetivo de uma universidade no Rio de Janeiro, realizado em 1999. Os registros de 92 participantes foram relacionados com a base do Sistema de Informação sobre Nascidos Vivos utilizando o programa RecLink II. Empregaram-se estratégias de revisão manual reduzida e ampliada. A sensibilidade para a identificação dos nascimentos na estratégia reduzida foi de 60,9%, enquanto que na ampliada foi de 72,8%. Os poucos campos disponíveis e a elevada proporção de homônimas representaram os maiores obstáculos para a obtenção de resultados mais acurados.El objetivo del estudio fue evaluar la sensibilidad del método del enlace ("linkage") probabilístico de registros en la identificación de nacimientos de cohorte. Se utilizaron datos de la población de Estudio Pro-Salud, un estudio con funcionarios técnico-administrativos del grupo efectivo de una universidad en Río de Janeiro (Sureste de Brasil), realizado en 1999. Los registros de 92 participantes fueron relacionados con la base del Sistema de Información sobre Nacidos Vivos utilizando el programa RecLink II. Se emplearon estrategias de revisión manual reducida y ampliada. La sensibilidad para la identificación de nacimientos en la estrategia reducida fue de 60,9%, mientras que en la ampliada fue de 72,8%. Los pocos campos disponibles y la elevada proporción de homónimos representaron los mayores obstáculos para la obtención de resultados más precisos.The objective of the study was to evaluate the sensitivity of probabilistic record linkage for reported birth identification. Data from the Pró-Saúde Study cohort population were used comprising technical-administrative staff at a university in Rio de Janeiro, Brazil, in 1999. A total of 92 records of subjects were linked to the database of the Brazilian Information System on Live Births (SINASC) using RecLink II program. Both reduced and amplified strategies of clerical review were used. The sensitivity for birth identification with the reduced strategy was 60.9%, while with the amplified strategy was 72.8%. The limited number of fields available and the high proportion of homonymous names were major obstacles for the attainment of more accurate results

Caracterización del riesgo familiar total y tipo de familia en pobladores de un asentamiento humano de un distrito de Lima Norte

OBJECTIVES: This paper aims to determine the relationship between the characterization of Total Family Risk and Family Type in a slum population in northern Lima. MATERIALS AND METHODS: The method used was quantitative, descriptive and cross-sectional design. The population was 540 families consisted of 540 families. Data-collection was given between the second semester of 2014 and 2015 involving nursing students. Started an interview with the head of the family. The instrument used was Questionnaire RFT 5:33, which was adapted and validated to our reality. RESULTS: Globally, most families are within the vulnerable class (52.4%), vulnerable families are predominantly in the “social economic situation” and “child management” dimensions. In the family type 1, vulnerable families predominate in the dimensions “socio economic situation” and “child management, while in the family type 2 the vulnerable family is mainly in the dimensions” socio economic situation “and” health services and practices“. There is an association between total family risk and family type. CONCLUSIONS: It was concluded that, although in our study we found low frequency of highrisk families more than half of the families are vulnerable. Furthermore, it could identify a similar number of families with low risk, which justifies the continuation and strengthening of multidisciplinary and inter-institutional participation to eradicate, neutralize or reduce the risks in families.OBJETIVO: El presente estudio tiene como objetivo determinar la relación entre la caracterización del Riesgo Familiar Total y el tipo de Familia en personas de un asentamiento humano de un distrito de Lima Norte. MATERIALES Y MÉTODOS: El método utilizado fue cuantitativo, el diseño transversal y correlacional. La población fue de 540 familias. La recolección de información se dio entre el segundo semestre de 2014 y agosto de 2015 participando estudiantes de enfermería. Se entrevistó al jefe de familia. El instrumento empleado fue el cuestionario RFT 5:33, el cual fue adaptado y validado a nuestra realidad. RESULTADOS: De manera global, la mayor parte de las familias se encuentran dentro de la clase amenazada (52,4%), las familias amenazadas se encuentran predominantemente en las dimensiones “situación socioeconómica” y “manejo de menores”. En la familia tipo 1, las familias amenazadas predominan en las dimensiones “situación socioeconómica” y “manejo de menores”; mientras que en la familia tipo 2, la familia amenazada se da mayormente en las dimensiones “situación socioeconómica” y “servicios y prácticas de salud”. Existe asociación entre riesgo familiar total y el tipo de familia. CONCLUSIONES: A pesar de que en nuestro estudio encontramos baja frecuencia de familias con riesgo alto, más de la mitad de las familias se encuentran amenazadas. Además, se pudo identificar una cifra similar de familias con riesgo bajo, los cuales justifican continuar y fortalecer la participación multidisciplinaria e interinstitucional a fin de erradicar, neutralizar o reducir los riesgos existentes en las familias

Impacto de la responsabilidad social corporativa en el valor de marca

El beneficio de implementar acciones de Responsabilidad Social Corporativa (RSC) en las empresas, no est? claramente definido. Diversas investigaciones asocian un efecto sobre el valor de marca (VM), pero sus resultados son contradictorios. Si bien no existe suficiente evidencia emp?rica para calificar esta asociaci?n de relaci?n causal o explicativa, la presente investigaci?n busca contribuir a demostrar que la relaci?n resulta significativa. La teor?a de los stakeholders soporta el modelo de esta investigaci?n, las caracter?sticas de las variables que se necesitan emplear, as? como los factores de tiempo y tama?o de muestra requirieron un modelo din?mico de regresi?n de datos de panel. El resultado del estudio permiti? establecer una evidencia emp?rica que no solo demuestra la significancia de la relaci?n entre la RSC y VM, si no tambi?n demuestra que la mejora constante en el tiempo de RSC tiene un efecto positivo en el VM. Se lleg? a concluir que la RSC per se no genera un efecto positivo en el VM, por cuanto sus stakeholders perciben una acci?n oportunista, sin embargo, la persistencia en el tiempo si genera el efecto positivo