Knowledge Production,Mobilization and Standardization in Chile’s HidroAysén Case

The Aysén Hydroelectric Project in Chilean Patagonia proposed the construction of the country’s largest power facility to supply its capital, nearly 2,000 kilometres away. We seek to explain the way science, politics, law, business and the civilian population are joined up. To this end, we analyse the project’s evolution, the construction of techno-scientific arguments by the participants and how Chilean regulations are adapting to this process.     

The Intersectionality of Culturally Responsive Teaching and Performance Poetry: Validating Secondary Latino Youth and Their Community

In this article the authors draw from culturally responsive teaching and multicultural education to describe performance poetry as an effective strategy for validating secondary aged Latino youths’ lived experiences. Supported by teacher modeling and the incorporation of community poets, students created and shared their own powerful poems that provided authentic opportunities to engage in critical analysis of the poems and issues of equality, social justice, and equity. Performance poetry is successfully used as a tool for validation, honoring and learning from our community, and transformation. Students in this border community were validated in terms of the identities as members of multiple worlds, learned about their own neighborhood from community poets, and were transformed in their identities as community activists through performance poetry. However, in this era of standardized teaching and high-stakes testing, teaching through performance poetry is often not supported in schools.     

Can Interactive Web-based CAD Tools Improve the Learning of Engineering Drawing? A Case Study

Many current Web-based learning environments facilitate the theoretical teaching of a subject but this may not be sufficient for those disciplines that require a significant use of graphic mechanisms to resolve problems. This research study looks at the use of an environment that can help students learn engineering drawing with Web-based CAD tools, including a self-correction component. A comparative study of 121 students was carried out. The students were divided into two experimental groups using Web-based interactive CAD tools and into two control groups using traditional learning tools. A statistical analysis of all the samples was carried out in order to study student behavior during the research and the effectiveness of these self-study tools in the learning process. The results showed that a greater number of students in the experimental groups passed the test and improved their test scores. Therefore, the use Web-based graphic interactive tools to learn engineering drawing can be considered a significant improvement in the teaching of this kind of academic discipline.     

Dependency parsing with finite state transducers and compression rules

This article proposes a syntactic parsing strategy based on a dependency grammar containing formal rules and a compression technique that reduces the complexity of those rules. Compression parsing is mainly driven by the ‘single-head’ constraint of Dependency Grammar, and can be seen as an alternative method to the well-known constructive strategy. The compression algorithm simplifies the input sentence by progressively removing from it the dependent tokens as soon as binary syntactic dependencies are recognized. This strategy is thus similar to that used in deterministic dependency parsing. A compression parser was implemented and released under General Public License, as well as a cross-lingual grammar with Universal Dependencies, containing only broad-coverage rules applied to Romance languages. The system is an almost delexicalized parser which does not need training data to analyze Romance languages. The rule-based cross-lingual parser was submitted to CoNLL 2017 Shared Task: Multilingual Parsing from Raw Text to Universal Dependencies. The performance of our system was compared to the other supervised systems participating in the competition, paying special attention to the parsing of different treebanks of the same language. We also trained a supervised delexicalized parser for Romance languages in order to compare it to our rule-based system. The results show that the performance of our cross-lingual method does not change across related languages and across different treebanks, while most supervised methods turn out to be very dependent on the text domain used to train the system.     

Multimedia integration for language e-learning： Content, context and the e-dossier

In the education world, it is widely accepted that language learning is one of the pioneering disciplines in the application and use of the information and communication technologies, initially preceded by the widespread use of audiovisual resources which, finally integrated in the digital space, bring about the use of multimedia. Additionally, language learning has greatly contributed to standardizing lesson plans. They set the basis for learning design, one of the last advances in the pedagogical organization of education through the use of computers in learning managing systems. Most recently, language learning has also played an innovative role in the implementation of portfolios to education. These three perspectives address different issues for e-learning： the access to content through technology; the design of the learning initially with the help of tutors and then applying institutional frameworks for their own personal learning processes; and the edition of the resulting e-learning experience as evidence with the e-dossier, a part of the e-portfolio. Currently, the web is evolving towards its original function as the read/write web where the user, apart from accessing information, can create their own information and communicate more interactively, using technology-enhanced learning environments to integrate text and multimedia for real audiences both in the classroom and outside. Thus, taking language learning guided by the Common European Framework of Reference for Languages, the authors present here a complete e-learning system which integrates textual as well as multimedia facilities to acquire learning content, edit learning design and report learning experiences.     

The emotions in teaching and learning nature sciences and physics/chemistry in pre-service primary teachers

A study was made of different emotions that prospective primary school teachers report with respect to science subjects, when they were pupils, and during their practice teaching, taking into account the variables gender and the speciality they studied in the secondary education. The study consisted of a questionnaire completed by 63 primary education students at the University of Extremadura, Spain. The results show a great difference between the emotions related to the subjects of physics/chemistry and the nature sciences （biology/geology）. The scientific subject influences the emotions of pre-service primary teachers, both in learning and teaching. In physics and chemistry, the emotions are mostly negative. While in nature sciences they are very positive. In nature sciences, there is a correlation between the emotions felt as secondary school pupils learning science and those they feel as teachers. In physics and chemistry, there is a correlation in the women between the emotions felt as secondary school pupils learning science and those they feel as teachers, but not in the men. The memory of their emotions in learning science at school is more negative than in teaching science during their teaching practice, except in nervousness in physics/chemistry. By gender, men declared a greater predilection for science content than women, with more of them describing such feelings as sympathy or confidence. The results highlight the influential role that emotions play throughout the professional growth of future primary teachers.     

Study of context influence on classifiers trained under different video-document representations

The problem of content-based video retrieval continues to pose a challenge to the research community, the performance of video retrieval systems being low due to the semantic gap. In this paper we consider whether taking advantage of context can aid the video retrieval process by making the prediction of relevance easier, i.e. if it is easier for a classification system to predict the relevance of a video shot under a given context, then that context has potential in also improving retrieval, since the underlying features better differentiate relevant from non-relevant video shots. We use an operational definition of context, where datasets can be split into disjoint sub-collections which reflect a particular context. Contexts considered include task difficulty and user expertise, among others. In the classification process, four main types of features are used to represent video-shots: conventional low-level visual features representing physical properties of the video shots, behavioral features which are based on user interaction with the video shots, and two different bag-of-words features obtained from the Automatic Speech Recognition from the audio of the video.     

Representación y magnitud de los sumandos en la resolución de problemas aditivos

Resumen

Se estudia la incidencia del nivel de abstracción y de la magnitud de los sumandos en la resolución de tareas aditivas elementales. Para ello, dos muestras de niños de 5 a 7 años pasaron diferentes pruebas. Los resultados muestran en general que los factores edad, modo de representación y el tamaño y posición de los sumandos son estadísticamente significativos. Más en conaeto, los niños pequeños son especialmente sensibles al grado de abstracción de los sumandos, mientras que el grupo de los mayores se ve afectado principalmente por el tercer factor. Por otra parte, el repertorio de estrategias empleado es pobre en los preescolares y variado en los escolares.     

Interoperability and Information Integration in an Early Online Academic Digital Library of Theses and Dissertations: The Case of BTD

Cooperative organization has been proposed as a means to improve the usefulness of virtual libraries. Information interchange among library and other academic applications is often hindered by the lack of application interoperability. This hindrance may be overcome through the development of standards that allow for digital libraries to exchange and share information with other applications. The Graduate Program in Production Engineering (PPGEP) of the Federal University of Santa Catarina (UFSC) launched its Theses and Dissertations Bank (BTD) in 1995. BTD is possibly the first online academic digital library of theses. From a digital document repository, BTD evolved into a system that combines bibliometry and informetry features. BTD is used by students and faculty in their research activities, but also by decision makers from industry and academia. They use it, respectively, to search for specialists and to measure interest and knowledge interchange among PPGEP research areas. This article presents the history, features, and development prospects for the BTD project. The integration of BTD with other academic applications, especially those of the Brazilian national science and technology platform, is emphasized.