Analyzing library collections with starfield visualizations

This paper presents a qualitative and formative study of the uses of a starfield-based visualization interface for analysis of library collections. The evaluation process has produced feedback that suggests ways to significantly improve starfield interfaces and the interaction process to improve their learnability and usability. The study also gave us clear indication of additional potential uses of starfield visualizations that can be exploited by further functionality and interface development. We report on resulting implications for the design and use of starfield visualizations that will impact their graphical interface features, their use for managing data quality and their potential for various forms of visual data mining. Although the current implementation and analysis focuses on the collection of a physical library, the most important contributions of our work will be in digital libraries, in which volume, complexity and dynamism of collections are increasing dramatically and tools are needed for visualization and analysis

Experiences with starfield visualizations for analysis of library collections

This paper presents a qualitative and formative study of the uses of a starfield-based visualization interface for analysis of library collections. The evaluation process has produced feedback that suggests ways to significantly improve starfield interfaces and the interaction process to improve their learnability and usability. The study also gave us clear indication of additional potential uses of starfield visualizations that can be exploited by further functionality and interface development. We report on resulting implications for the design and use of starfield visualizations that will impact their graphical interface features, their use for managing data quality and their potential for various forms of visual data mining. Although the current implementation and analysis focuses on the collection of a physical library, the most important contributions of our work will be in digital libraries, in which volume, complexity and dynamism of collections are increasing dramatically and tools are needed for visualization and analysis

Análisis interpretativo de las tres piezas para clarinete de Blas Emilio Atehortúa

Realizar un análisis interpretativo de Las Tres Piezas para Clarinete Solo de Blas Emilio Atehortúa.Maestro (a) en MúsicaPregrad

Classification of apple and pear species from Alcobaça region (Portugal) and their cultivars with machine learning algorithms

Principal Component Analysis (PCA) transforms the original variable into new ones called principal components (PC). These PC´s are calculated attributing a coefficient for each original variables proportional to their contribution into this transformation in order to maximize the variances of the first few components [1]. The main objective is to reduce the dimensionality, while keeping the contribution of all initial variables in order to provide a visual pattern recognition [2]. PCA biplot graphs with both scores and loadings provide information on the influence of each variable on a given sample. The hierarchical clustering was also employed in order to highlight the similarities among samples. The following variables were determined through ethanolic extracts of apple and pear varieties from the Alcobaça region (Portugal) using spectrophotometric analysis: DPPH radical scavenging, -carotene bleaching, total phenolic content, total flavonoid content, and fructose content. The results show that a very high correlation exists among the variables antioxidant capacity through DPPH, total phenolics content and total flavonoids, while the fructose content shows independent behavior in relation to the other ones. The graph of scores for the first two PCs, which explain 90% of variance, shows three different clusters with different apple and pear species. It can be concluded from these results that the fructose content allows to separate apples and pears while antioxidant capacity through DPPH, total phenolics content and total flavonoids content can be used to separate different cultivars of each fruit. This study shows that multivariate analysis, with special focus on PCA, can be a valuable tool for the separation of different fruit species and their cultivars highlighting the similarities and differences among them.This study was carried out in the frame of the clabel+ project: Innovative Natural, Nutritious and Consumer Oriented “Clean Label” Foods with the reference POCI-01-0247-FEDER-046080 financed by the Competitiveness and Internationalization Thematic Operational Programme (PO CI), under the COMPETE2020, PORTUGAL2020 Partnership Agreement, through the co-financing of European Regional Development Fund (FEDER). J. D. Teixeira would like to thank to clabel+ project for his fellowship (28/2021/BI). The authors thank Patricia Vicente for her support in the field work. The work was supported by UIDB/00211/2020 with funding from FCT/MCTES through national funds. C. Almeida also acknowledges the financial support by LA/P/0045/2020 (ALiCE), UIDB/00511/2020 and UIDP/00511/2020 (LEPABE), funded by national funds through FCT/MCTES (PIDDAC).info:eu-repo/semantics/publishedVersio

Regional apple and pear cultivars from Alcobaça region (Portugal): comparison of the antioxidant properties of the edible part and by-products

Food waste is commonly defined as a decrease, at all stages of the food system from production to consumption, in mass and/or quality, of food that was originally intended for human consumption, regardless of the cause [1]. To avoid food waste, we aimed to characterize the antioxidant capacity of regional cultivars of apples and pears, for which there are still scarce data. Moreover, different parts of the fruits (peels, seeds and mesocarp) were analysed individually in order to evaluate the potential of by-products to be used a valuable source of natural antioxidants [2], which are believed to be responsible for human health benefits such as anticancer and cardioprotective effects [3]. The objective of this work was to determine the antioxidant properties [4] and fructose content of both by-products (peels and seeds) and edible part of five different Portuguese apple cultivars (Pardo Lindo, Pêro de Borbela, Noiva, Pêro Coimbra and Repinau) and five pear cultivars (Bela-Feia, Torres Novas, Carapinheira Roxa, Lambe-os-Dedos and Amorim), produced in Alcobaça region (Alcobaça), in two consecutive years. The antioxidant properties were evaluated through antioxidant capacity tests (DPPH radical scavenging and -carotene bleaching) and total phenolic content and total flavonoids assays. By-products showed better antioxidant capacity, than the edible part in all cultivars, but the fructose content was very similar in the three parts of the fruits. The results indicate that regional apples´ by-products presented greater potential than regional pears´ by-products. In this line they have potential to be used as a valuable source of antioxidant compounds, which can be further used, by food, cosmetics, food packaging or food supplements industries.This study was carried out in the frame of the clabel+ project: Innovative Natural, Nutritious and Consumer Oriented “Clean Label” Foods with the reference POCI-01-0247-FEDER-046080 financed by the Competitiveness and Internationalization Thematic Operational Programme (POCI), under the COMPETE2020, PORTUGAL2020 Partnership Agreement, through the co-financing of European Regional Development Fund (FEDER). J. D. Teixeira would like to thank to clabel+ project for his fellowship (28/2021/BI). The authors thank Patricia Vicente for her support in the field work. The work was supported by UIDB/00211/2020 with funding from FCT/MCTES through national funds. C. Almeida also acknowledges the financial support by LA/P/0045/2020 (ALiCE), UIDB/00511/2020 and UIDP/00511/2020 (LEPABE), funded by national funds through FCT/MCTES (PIDDAC).info:eu-repo/semantics/publishedVersio

Participación de los principales destinos turísticos europeos en buscadores: aplicación al ámbito español

Un importante desafío al que se enfrentan las organizaciones y destinos turísticos es poder ser visualizados por un buscador y, de esta forma, poder ser accesibles por los turistas potenciales en la planificación de su viaje. La accesibilidad y visualización por el buscador proporcionan, particularmente a los destinos, una oportunidad para promover y comercializar su página web e incluso el destino en sí, incentivando la competitividad del destino turístico. Por lo tanto, el presente trabajo tiene como objetivo determinar la representatividad del turismo online para los principales destinos turísticos europeos a través de cuatro buscadores. El trabajo extiende el estudio a nueve categorías turísticas que son analizadas para los principales destinos turísticos españoles. Los resultados del estudio revelan que los buscadores indexan una gran cantidad de páginas web relacionadas con el turismo, sin embargo, la presencia de páginas de destinos que es visible y accesible por los turistas es muy pequeña. La baja visibilidad de las páginas web turísticas en los buscadores analizados indica que las oportunidades para los turistas online de tener interacciones con organizaciones y destinos turísticos son escasas. Como implicación de los resultados obtenidos, se recomienda a las organizaciones y destinos turísticos su presencia en un número importante de buscadores. Para conseguir tal finalidad, los destinos turísticos deberían utilizar una serie de acciones que ayuden a incrementar la visibilidad de una página web en los resultados ofrecidos al turista potencial a través del buscador, esperando la perfecta solución a sus necesidades de viaje.Online visibility and accessibility is a challenge for tourist organizations and destinations. Potential tourists should be able to plan their journeys and completely satisfy their travel needs using online search engines and the websites of destinations. The accessibility and visibility of tourist destinations and organizations in a search engine are a great opportunity to promote and market both organizations and destinations, and many have a decisive influence on competitiveness. This article therefore aims to determine how four online search engines present the concept “tourism” in the most famous European tourist destinations. This study divides the concept of tourism into nine tourist categories which are used to analyze how tourism is represented in the main Spanish tourist destinations. The results of this research reveal that search engines index a great number of websites related to tourism, although the visibility and accessibility of tourist destinations for tourists is relatively low. The low visibility of tourist websites in the search engines used here suggests that the possibility of online interaction between tourists and tourist organizations and destinations is small. Results also indicate that tourist organizations and destinations should increase their presence in as many online search engines as possible. Tourist destinations should also take actions contributing to increase the visibility of their websites in the results found by search engines, so that potential tourists may satisfy their travel needs completely

Evaluation of the individual phenolic compounds of regional cultivars of pears (Pyrus communis L.) by Liquid Chromatography combined with High Resolution Mass Spectrometry

Pear (Pyrus communis L.) is a fruit of great interest because their consumption offers nutritional as well as medicinal advantages [1]. The most well-known and studied properties associated with pears are antioxidant and anti-inflammatory properties [2] these are associated with the presence of phenolic compounds, mainly in the peels but also, in smaller amounts, in its mesocarp (pulp) [3]. In this work, an Ultra-High Performance Liquid Chromatography combined with Time-of-Flight Mass Spectrometry (UHPLC-ToF-MS) method was optimized and validated for the determination of individual phenolics in the pulp and by-products of fruits. The main phenolic compounds found in the studied regional pear cultivars (6 cultivars from Alcobaça region) were catechin, epicatechin, caffeic acid, chlorogenic acid, and vanillic acid. The pear by-products (peels and seeds) presented higher phenolic content than mesocarp, mainly peels samples. One example of this is the Carapinheira Roxa cultivar, wherein the peels had the highest concentration of chlorogenic acid (26.26 ± 0.65 g/g) and lower levels were found in the seeds (3.11 ± 0.19 g/g) and in the pulp (4.27 ± 0.03 g/g). Other very well recognized pear phenolics, were quantified in all the pear cultivars, at different levels. For example, in the peels portion, the level of epicatechin varied between 0.19 g/g in the Torres Novas cultivar and 37.30 g/g in the Lambe-os-Dedos cultivar. The studied regional pear cultivars, in particular their by-products, presented high levels of phenolic compounds, showing potential to be valorized.This study was carried out in the frame of the clabel+ project: Innovative Natural, Nutritious and Consumer Oriented “Clean Label” Foods with the reference POCI-01-0247-FEDER-046080 financed by the Competitiveness and Internationalization Thematic Operational Programme (POCI), under the COMPETE2020, PORTUGAL2020 Partnership Agreement, through the co-financing of European Regional Development Fund (FEDER). The work was supported by UIDB/00211/2020 with funding from FCT/MCTES through national funds. J. D.T. would like to thank to clabel+ project for his fellowship (28/2021/BI). The authors thank Patricia Vicente for her support in the field work. C. Almeida also acknowledges the financial support by LA/P/0045/2020 (ALiCE), UIDB/00511/2020 and UIDP/00511/2020 (LEPABE), funded by national funds through FCT/MCTES (PIDDAC).info:eu-repo/semantics/publishedVersio

Social movements and international law: progress and challenges

Objetivo. El siguiente escrito se propone reunir un conjunto de entradas teóricas del derecho internacional alternativas a las entradas dominantes centradas en la participación de los Estados y organizaciones internacionales en la construcción de normas internacionales. Metodología. Con base en el análisis documental se examina la clave en que se ha desarrollado la relación entre el derecho internacional y los movimientos sociales. Resultado. Como resultado se obtuvo un marco general para entender en qué términos se ha explorado dicha relación. Conclusión. Se concluye con los avances que se han gestado en esta relación, y con los retos mayores para la academia con miras a la construcción de un marco teórico del derecho internacional de los movimientos sociales.Objective. The purpose of this article is to gather a set of theoretical entries of international law alternative to the dominant entries, which are focused only on the participation of States and international organizations in the building of international standards. Methodology. Based on a documentary analysis, the pattern in which the relationship between international law and social movements has taken place is examined. Results. As a result, a general framework to understand in which terms that relationship has been explored was obtained. Conclusions. It concludes with the advances that have been developed in this relationship, and with the major challenges for the academy in order to construct a theoretical framework of the international law of social movements

Saber pedagógico en evaluación del profesorado de escuelas vulnerables de la comuna de Arica y sus demandas a la formación inicial docente

Esta investigación tuvo como objetivo analizar las prácticas pedagógicas en evaluación del profesorado que se desempeña en contextos escolares vulnerables, identificando las demandas que, desde su experiencia profesional docente, realizan a la formación inicial. El estudio de carácter cualitativo, ha utilizado como técnica de recogida de la información, la entrevista semi estructurada y el grupo de discusión, y fue realizado en escuelas de alto índice de vulnerabilidad de la comuna de Arica-Chile, durante el primer semestre de 2018. Los resultados muestran que el profesorado utiliza estrategias evaluativas que promueven el diálogo, la reflexión grupal y la capacidad crítica del estudiantado, mediante procedimientos que incentivan la autoevaluación, la coevaluación y la metacognición de estos, estrategias que son complementadas con la formulación de preguntas abiertas, la explicitación de altas expectativas sobre el rendimiento del alumnado y la utilización de recursos afectivos en su acción evaluativa.The objective of this research was to analyze pedagogical practices in the evalua-tion of teachers working in vulnerable school contexts, identifying the demands that they make on initial teacher education from their professional experience. This is a qualitative study that used a semi-structured interview and a discussion group as techniques for data collection. It was carried out in schools with a high vulnerability index in the municipality of Arica, Chile, during the first semester of 2018. The results show that teachers use assessment strategies that promote dialogue, group reflection and the student's critical capacity, through procedures that encourage self-assessment, co-assessment and meta-cognition, all of which are complemented by the formulation of open questions, high expectations re-garding student performance and the use of motivational resources in their as-sessment instances