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Article

Amed Leiva-Mederos, Jose A. Senso, Yusniel Hidalgo-Delgado and Pedro Hipola

Information from Current Research Information Systems (CRIS) is stored in different formats, in platforms that are not compatible, or even in independent networks. It…

Abstract

Purpose

Information from Current Research Information Systems (CRIS) is stored in different formats, in platforms that are not compatible, or even in independent networks. It would be helpful to have a well-defined methodology to allow for management data processing from a single site, so as to take advantage of the capacity to link disperse data found in different systems, platforms, sources and/or formats. Based on functionalities and materials of the VLIR project, the purpose of this paper is to present a model that provides for interoperability by means of semantic alignment techniques and metadata crosswalks, and facilitates the fusion of information stored in diverse sources.

Design/methodology/approach

After reviewing the state of the art regarding the diverse mechanisms for achieving semantic interoperability, the paper analyzes the following: the specific coverage of the data sets (type of data, thematic coverage and geographic coverage); the technical specifications needed to retrieve and analyze a distribution of the data set (format, protocol, etc.); the conditions of re-utilization (copyright and licenses); and the “dimensions” included in the data set as well as the semantics of these dimensions (the syntax and the taxonomies of reference). The semantic interoperability framework here presented implements semantic alignment and metadata crosswalk to convert information from three different systems (ABCD, Moodle and DSpace) to integrate all the databases in a single RDF file.

Findings

The paper also includes an evaluation based on the comparison – by means of calculations of recall and precision – of the proposed model and identical consultations made on Open Archives Initiative and SQL, in order to estimate its efficiency. The results have been satisfactory enough, due to the fact that the semantic interoperability facilitates the exact retrieval of information.

Originality/value

The proposed model enhances management of the syntactic and semantic interoperability of the CRIS system designed. In a real setting of use it achieves very positive results.

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Article

Amed Leiva-Mederos, José A. Senso, Sandor Domínguez-Velasco and Pedro Hípola

The purpose of this paper is to propose a tool that generates authority files to be integrated with linked data by means of learning rules. AUTHORIS is software developed…

Abstract

Purpose

The purpose of this paper is to propose a tool that generates authority files to be integrated with linked data by means of learning rules. AUTHORIS is software developed to enhance authority control and information exchange among bibliographic and non-bibliographic entities.

Design/methodology/approach

The article analyzes different methods previously developed for authority control as well as IFLA and ALA standards for managing bibliographic records. Semantic Web technologies are also evaluated. AUTHORIS relies on Drupal and incorporates the protocols of Dublin Core, SIOC, SKOS and FOAF. The tool has also taken into account the obsolescence of MARC and its substitution by FRBR and RDA. Its effectiveness was evaluated applying a learning test proposed by RDA. Over 80 percent of the actions were carried out correctly.

Findings

The use of learning rules and the facilities of linked data make it easier for information organizations to reutilize products for authority control and distribute them in a fair and efficient manner.

Research limitations/implications

The ISAD-G records were the ones presenting most errors. EAD was found to be second in the number of errors produced. The rest of the formats – MARC 21, Dublin Core, FRAD, RDF, OWL, XBRL and FOAF – showed fewer than 20 errors in total.

Practical implications

AUTHORIS offers institutions the means of sharing data with a high level of stability, helping to detect records that are duplicated and contributing to lexical disambiguation and data enrichment.

Originality/value

The software combines the facilities of linked data, the potency of the algorithms for converting bibliographic data, and the precision of learning rules.

Details

Library Hi Tech, vol. 31 no. 3
Type: Research Article
ISSN: 0737-8831

Keywords

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Article

Pedro Hípola, José A. Senso, Amed Leiva-Mederos and Sandor Domínguez-Velasco

The purpose of this paper is to look into the latest advances in ontology-based text summarization systems, with emphasis on the methodologies of a socio-cognitive…

Abstract

Purpose

The purpose of this paper is to look into the latest advances in ontology-based text summarization systems, with emphasis on the methodologies of a socio-cognitive approach, the structural discourse models and the ontology-based text summarization systems.

Design/methodology/approach

The paper analyzes the main literature in this field and presents the structure and features of Texminer, a software that facilitates summarization of texts on Port and Coastal Engineering. Texminer entails a combination of several techniques, including: socio-cognitive user models, Natural Language Processing, disambiguation and ontologies. After processing a corpus, the system was evaluated using as a reference various clustering evaluation experiments conducted by Arco (2008) and Hennig et al. (2008). The results were checked with a support vector machine, Rouge metrics, the F-measure and calculation of precision and recall.

Findings

The experiment illustrates the superiority of abstracts obtained through the assistance of ontology-based techniques.

Originality/value

The authors were able to corroborate that the summaries obtained using Texminer are more efficient than those derived through other systems whose summarization models do not use ontologies to summarize texts. Thanks to ontologies, main sentences can be selected with a broad rhetorical structure, especially for a specific knowledge domain.

Details

Library Hi Tech, vol. 32 no. 2
Type: Research Article
ISSN: 0737-8831

Keywords

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Article

José Francisco Villarreal Valderrama, Luis Takano, Eduardo Liceaga-Castro, Diana Hernandez-Alcantara, Patricia Del Carmen Zambrano-Robledo and Luis Amezquita-Brooks

Aircraft pitch control is fundamental for the performance of micro aerial vehicles (MAVs). The purpose of this paper is to establish a simple experimental procedure to…

Abstract

Purpose

Aircraft pitch control is fundamental for the performance of micro aerial vehicles (MAVs). The purpose of this paper is to establish a simple experimental procedure to calibrate pitch instrumentation and classical control algorithms. This includes developing an efficient pitch angle observer with optimal estimation and evaluating controllers under uncertainty and external disturbances.

Design/methodology/approach

A wind tunnel test bench is designed to simulate fixed-wing aircraft dynamics. Key elements of the instrumentation commonly found in MAVs are characterized in a gyroscopic test bench. A data fusion algorithm is calibrated to match the gyroscopic test bench measurements and is then integrated into the autopilot platform. The elevator-angle to pitch-angle dynamic model is obtained experimentally. Two different control algorithms, based on model-free and model-based approaches, are designed. These controllers are analyzed in terms of parametric uncertainties due to wind speed variations and external perturbation because of sudden weight distribution changes. A series of experimental tests is performed in wind-tunnel facilities to highlight the main features of each control approach.

Findings

With regard to the instrumentation algorithms, a simple experimental methodology for the design of optimal pitch angle observer is presented and validated experimentally. In the context of the platform design and identification, the similitude among the theoretical and experimental responses shows that the platform is suitable for typical pitch control assessment. The wind tunnel experiments show that a fixed linear controller, designed using classical frequency domain concepts, is able to provide adequate responses in scenarios that approximate the operation of MAVs.

Research limitations/implications

The aircraft orientation observer can be used for both pitch and roll angles. However, for simultaneousyaw angle estimation the proposed design method requires further research. The model analysis considers a wind speed range of 6-18 m/s, with a nominal operation of 12 m/s. The maximum experimentally tested reference for the pitch angle controller was 20°. Further operating conditions may require more complex control approaches (e.g. scheduling, non-linear, etc.). However, this operating range is enough for typical MAV missions.

Originality/value

The study shows the design of an effective pitch angle observer, based on a simple experimental approach, which achieved locally optimum estimates at the test conditions. Additionally, the instrumentation and design of a test bench for typical pitch control assessment in wind tunnel facilities is presented. Finally, the study presents the development of a simple controller that provides adequate responses in scenarios that approximate the operation of MAVs, including perturbations that resemble package delivery and parametric uncertainty due to wind speed variations.

Details

Aircraft Engineering and Aerospace Technology, vol. 92 no. 7
Type: Research Article
ISSN: 1748-8842

Keywords

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Article

Avv. Umberto Fragola

Nel mio breve studio «Note introduttive per una scienza del turismo nel quadro della preparazione professionale turistica in Italia» scrissi: «Si può dunque ammettere che…

Abstract

Nel mio breve studio «Note introduttive per una scienza del turismo nel quadro della preparazione professionale turistica in Italia» scrissi: «Si può dunque ammettere che il turismo possa formare oggetto di uno studio scientifico e che anzi sia una scienza, una scienza nuova; una scienza composita. Si può parlare semplicemente di ‘scienza del turismo’, non sembrando adatti i termini di turismologia e turismografia.» Proprio perchè scienza composila, la materia che trattiamo, riceve contributi da moite altre scienze e quindi anche dalla scienza del diritto.

Details

The Tourist Review, vol. 21 no. 1
Type: Research Article
ISSN: 0251-3102

Abstract

Purpose

Sustainability is understood as a complex and integrating area, involving the most diverse areas and fields of knowledge. Because of the innumerable socio-environmental challenges in the current scenario, a sustainable development that finds the necessary changes and advances for communities, industry and the various stakeholders involved is required. In this process of promoting sustainable development, universities stand out for being institutions capable of taking an analytical and questioning look at the directions of the society in which they are inserted and not just helping them to pursue them, serving as a model and living laboratory for the implementation of greener practices in cities. One of the actions that contributes to the consolidation process of a more sustainable university and the development of the green campus is the use of green marketing, understood as a set of all the practices that involve conventional marketing, focused on the search to reduce the negative impact or promote positive effects on the relationship between the institution and the environment. This paper aims, based on the balanced scorecard (BSC), to propose a strategic management tool as support for green marketing strategies, thus promoting, more quickly, the promotion of sustainable development in higher education institutions (HEIs).

Design/methodology/approach

Four universities were chosen, from the literature, in terms of best practices for sustainable development, where the main dimensions used by green marketing were mapped. Based on them, the BSC structure was adapted to enhance its strategies.

Findings

To achieve the objective of this work, this paper proposed an adaptation of the original BSC for better management of green marketing strategies for universities, based on four dimensions: community members, university members, product and strategy.

Originality/value

The main contribution of this paper is to propose a BSC as a strategic management system focused on the green marketing of universities to accelerate the promotion of sustainable development in HEIs.

Details

International Journal of Sustainability in Higher Education, vol. 21 no. 7
Type: Research Article
ISSN: 1467-6370

Keywords

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Article

Andreia Carvalho, Sergio Jesus Teixeira, Leonilde Olim, Sancha de Campanella and Teresa Costa

The aim of this study is to obtain a broader knowledge of innovative pedagogical practices in higher education, by analysing the particular case of the Higher Institute of…

Abstract

Purpose

The aim of this study is to obtain a broader knowledge of innovative pedagogical practices in higher education, by analysing the particular case of the Higher Institute of Administration and Languages (ISAL). The literature review reveals a gap in this scientific field, and filling this gap is as imperative as the need to articulate higher education with the Students' Profile by the End of Compulsory Schooling.

Design/methodology/approach

This research adopts a qualitative methodological approach, in order to analyse the students and teachers' perceptions of the active learning methodologies implemented at ISAL. Data were collected from a closed-ended questionnaire, aimed at a population composed of students and teachers.

Findings

The literature review reveals a gap in this scientific field, particularly in Portugal. Filling this gap is as imperative as the need to articulate higher education with the Students' Profile by the End of Compulsory Schooling.

Practical implications

With the adoption of this methodological approach, this research intends to verify not only whether the innovative pedagogical practices addressed in the literature review are implemented in this institution, but also to identify obstacles to their implementation. With regard to the results, several pedagogical innovation practices are already implemented, even though some limitations to their implementation are identified.

Originality/value

This research allows identifying indicators that are essential to outline an intervention plan in the pedagogical practices implemented at ISAL or other higher education institutions and contributes to assessing the current state of pedagogical practices in higher education.

Details

Education + Training, vol. 63 no. 2
Type: Research Article
ISSN: 0040-0912

Keywords

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Article

Beatriz Lima Zanoni, Rafael Borim-de-Souza, Eric Ford Travis and Jacques Haruo Fukushigue Jan-Chiba

The aim of this study is to analyze the capitals moved in decisions about sustainability in narratives from and referring to Samarco Minerações, S.A. under a perspective…

Abstract

Purpose

The aim of this study is to analyze the capitals moved in decisions about sustainability in narratives from and referring to Samarco Minerações, S.A. under a perspective guided by Bourdieusian sociology.

Design/methodology/approach

Oriented by historicist ontology and historical epistemology, this research is classified as qualitative, descriptive and documentary, with narrative analysis and case study. The selected organization-case was Samarco Minerações, S.A. The documentary sources considered were sustainability reports, social networks channels and news published in Brazilian newspapers of high circulation. The collected information was submitted to the narrative analysis method.

Findings

Samarco Minerações, S.A. maintained the sustainability posture before and after the ore tailings dam rupture. The decision models adopted (decentralized) and the moved capitals (economic and technological) after the ecocide revealed a change in the organizational practices in front of a new instability scenario, and the organization’s attempt to reach acknowledgment, legitimacy and power.

Social implications

The organization was selected because of its involvement in an ecocide. The crime generated economic (suspension of tax collection caused by the organizational inactivity), social (unemployment and deaths) and environmental (iron ore tailings contaminated the region’s ecosystem) impacts.

Originality/value

The greatest value and contribution this paper offers is an alternative intermediary methodological approach using Bourdieusian micro-sociology to analyze narratives based on capitals dynamics and doxa. This theoretical and methodological approach can prove fruitful for further research in sustainability studies on other topics, and even in other fields.

Propósito

Analisar, bajo orientación de la sociología bourdieusiana los capitales movidos en decisiones sobre sustentabilidade, desde narrativas referentes a Samarco Minerações S.A.

Design/Metodología/Enfoque

Orientado por una ontología historicista y epistemología histórica, esa pesquisa se clasifica como: cualitativa, descriptiva y documental, con el analisis de narrativa y estudio de caso. La organización elegida fue Samarco Minerações S.A. Las fuentes documentales fueron: informes de sustentabilidad, canales en redes sociales y notícias publicadas en periódicos brasileños de gran circulación. Las informaciones recogidas fueron sometidas al método de analisis narrativa.

Resultados

La Samarco Minerações S.A. mantuvo la postura de sustentabilidad antes y después del rompimiento de la represa. Los modelos de decisiones adoptados (descentralizado) y los capitales manejados (económico y tecnológico) después el ecocidio, revelaron un cambio en las prácticas organizacionales frente una escena de instabilidad, y el intento de la organización de alcanzar reconocimiento, legitimidad y poder.

Impacto social

La organización fue elegida por su participación en un ecocidio. El crimen generó impactos económicos (interrupción de recaudación de los impuestos causado por la inaticvidad organizacional), impacto social (desempleo y muertes), impacto ambiental (desechos de minério del hierro contaminarón al ecosistema de la región).

Originalidad/valor

El principal valor y contribución que el artículo ofrece es un enfoque metodológico intermedio y alternativo que se utiliza de la microsociología bourdieusiana para analisar narrativas basadas en la dinamica de los capitales y de la doxa. El enfoque teorico metodológico puede ser benéfico para las nuevas pesquisas en los estudios de sustentabilidad, de las narrativas, en otros temas y hasta mismo en otros campos.

Propósito

Analisar, sob orientação da sociologia bourdieusiana, os capitais movimentados em decisões sobre sustentabilidade, a partir de narrativas da e referentes à Samarco Minerações S.A.

Design/Metodologia/Abordagem

Orientada por uma ontologia historicista e epistemologia histórica, essa pesquisa classifica-se como: qualitativa, descritiva e documental, com análise de narrativa e estudo de caso. A organização selecionada foi a Samarco Minerações S.A. As fontes documentais foram: relatórios de sustentabilidade, canais em redes sociais e notícias publicadas em jornais brasileiros de grande circulação. As informações coletadas foram submetidas ao método de análise narrativa.

Resultados

A Samarco Minerações S.A. manteve a postura de sustentabilidade antes e após o rompimento da barragem. Os modelos de decisão adotados (descentralizado) e os capitais movimentados (econômico e tecnológico) após o ecocídio, revelaram uma mudança nas práticas organizacionais diante de um cenário de instabilidade, e a tentativa da organização de alcançar reconhecimento, legitimidade e poder.

Impacto social

A organização foi selecionada por seu envolvimento em um ecocídio. O crime gerou impacto econômicos (suspensão de arrecadação de impostos causada pela inatividade organizacional), impacto social (desempregos e mortes), impacto ambiental (rejeitos de minério de ferro contaminaram o ecossistema da região).

Originalidade/valor

O principal valor e contribuição que o artigo oferece é uma abordagem metodológica intermediária e alternativa que se utiliza da microssociologia bourdieusiana para analisar narrativas baseadas na dinâmica dos capitais e da doxa. A abordagem teórico-metodológica pode ser benéfica para novas pesquisas em estudos de sustentabilidade, de narrativas, em outros temas e até mesmo em outros campos.

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