6 research outputs found

    Computer Science and Technology Series : XV Argentine Congress of Computer Science. Selected papers

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    CACIC'09 was the fifteenth Congress in the CACIC series. It was organized by the School of Engineering of the National University of Jujuy. The Congress included 9 Workshops with 130 accepted papers, 1 main Conference, 4 invited tutorials, different meetings related with Computer Science Education (Professors, PhD students, Curricula) and an International School with 5 courses. CACIC 2009 was organized following the traditional Congress format, with 9 Workshops covering a diversity of dimensions of Computer Science Research. Each topic was supervised by a committee of three chairs of different Universities. The call for papers attracted a total of 267 submissions. An average of 2.7 review reports were collected for each paper, for a grand total of 720 review reports that involved about 300 different reviewers. A total of 130 full papers were accepted and 20 of them were selected for this book.Red de Universidades con Carreras en Informática (RedUNCI

    Computer Science and Technology Series : XV Argentine Congress of Computer Science. Selected papers

    Get PDF
    CACIC'09 was the fifteenth Congress in the CACIC series. It was organized by the School of Engineering of the National University of Jujuy. The Congress included 9 Workshops with 130 accepted papers, 1 main Conference, 4 invited tutorials, different meetings related with Computer Science Education (Professors, PhD students, Curricula) and an International School with 5 courses. CACIC 2009 was organized following the traditional Congress format, with 9 Workshops covering a diversity of dimensions of Computer Science Research. Each topic was supervised by a committee of three chairs of different Universities. The call for papers attracted a total of 267 submissions. An average of 2.7 review reports were collected for each paper, for a grand total of 720 review reports that involved about 300 different reviewers. A total of 130 full papers were accepted and 20 of them were selected for this book.Red de Universidades con Carreras en Informática (RedUNCI

    Effective retrieval to support learning

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    To use digital resources to support learning, we need to be able to retrieve them. This thesis introduces a new area of research within information retrieval, the retrieval of educational resources from the Web. Successful retrieval of educational resources requires an understanding of how the resources being searched are managed, how searchers interact with those resources and the systems that manage them, and the needs of the people searching. As such, we began by investigating how resources are managed and reused in a higher education setting. This investigation involved running four focus groups with 23 participants, 26 interviews and a survey. The second part of this work is motivated by one of our initial findings; when people look for educational resources, they prefer to search the World Wide Web using a public search engine. This finding suggests users searching for educational resources may be more satisfied with search engine results if only those resources likely to support learning are presented. To provide satisfactory result sets, resources that are unlikely to support learning should not be present. A filter to detect material that is likely to support learning would therefore be useful. Information retrieval systems are often evaluated using the Cranfield method, which compares system performance with a ground truth provided by human judgments. We propose a method of evaluating systems that filter educational resources based on this method. By demonstrating that judges can agree on which resources are educational, we establish that a single human judge for each resource provides a sufficient ground truth. Machine learning techniques are commonly used to classify resources. We investigate how machine learning can be used to classify resources retrieved from the Web as likely or unlikely to support learning. We found that reasonable classification performance can be achieved using text extracted from resources in conjunction with Naïve Bayes, AdaBoost, and Random Forest classifiers. We also found that attributes developed from the structural elements—hyperlinks and headings found in a resource—did not substantially improve classification to support learning. We found that reasonable classification performance can be achieved using text extracted from resources in conjunction with Naïve Bayes, AdaBoost, and Random Forest classifiers. We also found that attributes developed from the structural elements—hyperlinks and headings found in a resource—did not substantially improve classification over simply using the text

    Interoperability Gap Challenges for Learning Object Repositories & Learning Management Systems

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    An interoperability gap exists between Learning Management Systems (LMSs) and Learning Object Repositories (LORs). Learning Objects (LOs) and the associated Learning Object Metadata (LOM) that is stored within LORs adhere to a variety of LOM standards. A common LOM standard found in LORs is the Sharable Content Object Reference Model (SCORM) Content Aggregation Model (CAM). In contrast, LMSs are independent computer systems that manage and deliver course content to students via a web interface. This research addressed three important issues related to the interoperability gap: (a) a lack of a metadata standard that defined the format of how student assessment data should be communicated from LMSs to LORs, (b) a lack of an architectural standard for the movement of data from LMSs to LORs, and (c) a lack of middleware that facilitated the movement of the student assessment data from the LMSs to LORs. This research achieved the following objectives: (a) the SCORM CAM LOM standard was extended to facilitate the storage of student assessment data, (b) Service Oriented Architecture (SOA) was identified as the best architecture to resolve the interoperability gap between LMSs and LORs, (c) a panel of Computer Information Systems (CIS) experts participated in a five-stage, web-based, anonymous Delphi process that approved and ranked 28 functional requirements for a proposed middleware application, and (d) the functional requirements were verified via the development of a prototype that transferred student assessment data from a LMSs into the LOM of LOs that are stored within a LOR. In conclusion, the research demonstrated that there are three acceptable approaches to extending the SCORM LOM standard: (a) new metadata elements, (b) new vocabulary values, and (c) the reference of an internal or external XML file using a location element. The main accomplishments of the research were the gathering of SOA functional requirements and the development of a prototype that provided an approach for the resolution of the interoperability gap that exists between LMSs and LORs

    Teacher roles during amusement park visits – insights from observations, interviews and questionnaires

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    Amusement parks offer rich possibilities for physics learning, through observations and experiments that illustrate important physical principles and often involve the whole body. Amusement parks are also among the most popular school excursions, but very often the learning possibilities are underused. In this work we have studied different teacher roles and discuss how universities, parks or event managers can encourage and support teachers and schools in their efforts to make amusement park visits true learning experiences for their students

    Dinâmicas de MOODLiz@ção num agrupamento de escolas de Matosinhos: o caso do agrupamento vertical de escolas de Leça da Palmeira/Santa Cruz do Bispo

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    Doutoramento em Multimédia em EducaçãoO advento da Internet e da Web, na década de 1990, a par da introdução e desenvolvimento das novas TIC e, por consequência, a emergência da Sociedade da Informação e do Conhecimento, implicaram uma profunda alteração na forma de análise dos processos de ensino-aprendizagem, já não apenas segundo um prisma cognitivista, mas, agora, também social, isto é, segundo a(s) perspetiva(s) construtivista(s). Simultaneamente, torna-se imperativo que, para que possam transformar-se em futuros trabalhadores de sucesso, isto é, trabalhadores de conhecimento (Gates, 1999), os sujeitos aprendentes passem a ser efetivamente educados/preparados para a Sociedade da Informação e do Conhecimento e, tanto quanto possível, através da educação/formação ao longo da vida (Moore e Thompson, 1997; Chute, Thompson e Hancock, 1999). Todavia, de acordo com Jorge Reis Lima e Zélia Capitão, não se deve considerar esta mudança de paradigma como uma revolução mas, antes, uma evolução, ou, mais concretamente ainda, uma “conciliação de perspectivas cognitivas e sociais” (Reis Lima e Capitão, 2003:53). Assim, às instituições de ensino/formação cumprirá a tarefa de preparar os alunos para as novas competências da era digital, promovendo “a aprendizagem dos pilares do conhecimento que sustentarão a sua aprendizagem ao longo da vida” (Reis Lima e Capitão, Ibidem:54), isto é, “aprender a conhecer”, “aprender a fazer”, “aprender a viver em comum”, e “aprender a ser” (Equipa de Missão para a Sociedade da Informação, 1997:39; negritos e sublinhados no original). Para outros, a Internet, ao afirmar-se como uma tecnologia ubíqua, cada vez mais acessível, e de elevado potencial, “vem revolucionando a gestão da informação, o funcionamento do mercado de capitais, as cadeias e redes de valor, o comércio mundial, a relação entre governos e cidadãos, os modos de trabalhar e de comunicar, o entretenimento, o contacto intercultural, os estilos de vida, as noções de tempo e de distância. A grande interrogação actual reside em saber se a Internet poderá também provocar alterações fundamentais nos modos de aprender e de ensinar” (Carneiro, 2002:17-18; destaques no original). Trata-se, portanto, como argumenta Armando Rocha Trindade (2004:10), de reconhecer que “Os requisitos obrigatórios para a eficácia da aprendizagem a ser assim assegurada são: a prévia disponibilidade de materiais educativos ou de formação de alta qualidade pedagógica e didáctica, tanto quanto possível auto-suficientes em termos de conteúdos teóricos e aplicados, bem como a previsão de mecanismos capazes de assegurar, permanentemente, um mínimo de interactividade entre docentes e aprendentes, sempre que quaisquer dificuldades destes possam manifestarse”. Esta questão é também equacionada pelo Eng.º Arnaldo Santos, da PT Inovação, quando considera que, à semelhança da “maioria dos países, a formação a distância em ambientes Internet e Intranet, vulgo e-Learning, apresenta-se como uma alternativa pedagógica em franca expansão. Portugal está a despertar para esta nova realidade. São várias as instituições nacionais do sector público e privado que utilizam o e-Learning como ferramenta ou meio para formar as suas pessoas” (Santos, 2002:26). Fernando Ramos acrescenta também que os sistemas de educação/formação que contemplam componentes não presenciais, “isto é que potenciam a flexibilidade espacial, têm vindo a recorrer às mais variadas tecnologias de comunicação para permitir a interacção entre os intervenientes, nomeadamente entre os professores e os estudantes. Um pouco por todo o mundo, e também em Portugal, se têm implantado sistemas (habitualmente designados como sistemas de ensino a distância), recorrendo às mais diversas tecnologias de telecomunicações, de que os sistemas de educação através de televisão ou os sistemas de tutoria por rádio ou telefone são exemplos bem conhecidos” (Ramos, 2002b:138-139). Ora, o nosso estudo entronca precisamente na análise de um sistema ou plataforma tecnológica de gestão de aprendizagens (Learning Management System - LMS), o MOODLE, procurando-se, deste modo, dar resposta ao reconhecimento de que “urge investigar sobre a utilização real e pedagógica da plataforma” (Carvalho, 2007:27). Por outro lado, não descurando o rol de interrogações de outros investigadores em torno da utilização do MOODLE, nem enveredando pelas visões mais céticas que inclusive pressagiam a sua “morte” (Fernandes, 2008b:134), também nós nos questionamos se esta ferramenta nem sequer vai conseguir transpor “a fase de final de entusiasmo, e tornar-se uma ferramenta de minorias e de usos ocasionais?” (Fernandes, Op. cit.:133).The beginning of Internet and of the Web, in the nineties, along with the introduction and development of new ICT and, as a consequence, the emergence of the Information and Knowledge Society, implied a profound change in the ways o of the teaching and learning processes, not any longer according to a single cognitivist prism, but, now, also social, i.e., according to the constructivist perspective(s). Simultaneously it becomes imperative that , so as to become future success workers, that is, knowledge workers (Gates, 1999), learners have to be effectively educated/prepared for the Information and Knowledge Society and, as much as possible, through lifelong education/training (Moore e Thompson, 1997; Chute, Thompson e Hancock, 1999). However, according to Jorge Reis Lima and Zélia Capitão, one cannot consider this change of paradigm as a revolution but rather as an evolution, or, more precisely yet, a “conciliation of cognitive and social perspectives” (Reis Lima and Capitão, 2003:53). Therefore, it is up to the teaching/training institutions to fulfil the task of preparing students for the new competences of the digital era, promoting “the learning of the principles of knowledge that will sustain the learning throughout life” (Reis Lima and Capitão, Ibidem:54), that is, “learning to know”, “learning to do”, “learning to live in common”, and “Learning to be” (Equipa de Missão para a Sociedade da Informação, 1997:39; bold and underlines in the original). For other, the Internet, affirming itself as an ubiquitous technology, more and more accessible and of high potential, “has been revolutionising the management of information, the functioning of the market of capitals, the chains and networks of value, the world commerce, the relationships between governments and citizens, the modes of working and of communicating, entertainment, the intercultural contact, life styles, the notions of time and distance. The great question at present resides in knowing whether the Internet can provoke fundamental changes in the ways of learning and teaching” (Carneiro, 2002:17-18; highlights in the original). We face, therefore, as Armando Rocha Trindade (2004:10) argues, the recognition that “The compulsory requisites for effective learning to be thus assured are: prior availability of educational or training materials of high pedagogical and didactic quality, as far as possible self sufficient in terms of theoretical and applied content, as well as the provision of mechanisms capable of assuring, permanently, a minimum of interactivity between teachers and learners, whenever any difficulty is manifested”. This issue is also equated by Engineer Arnaldo Santos, from PT Inovação, when he considers that, as it happens in the “majority of countries, distance education in Internet and Intranet environments, generally labelled e-Learning, is presented as a pedagogical alternative in overt expansion. Portugal is awakening for this new reality. There are various national public and private sector institutions that use e-Learning as a tool or means to train their people” (Santos, 2002:26). Fernando Ramos also adds that the systems of education/training that contemplate non face-to-face components “that is, that potentiate spatial flexibility, have been resorting to the most varied technologies of communication to allow interaction amongst participants, namely between teachers and students. A little throughout the world, and also in Portugal, have implanted systems (habitually known as distance learning systems), resorting the most diverse telecommunications technologies, of which the systems of education by TV or the tutoring systems by radio or telephone are well known examples” (Ramos, 2002b:138-139). Now, our study is rooted precisely on the analysis of a system or technological platform for the management of learning (Learning Management System - LMS), MOODLE, seeking, therefore, to find answers for the recognition that “it is urgent to study the real and pedagogical use of the platform” (Carvalho, 2007:27). On the other hand, not setting aside the array of questions from other researchers on the use of MOODLE, nor taking for granted the more sceptical views that include the premonition of its “death” (Fernandes, 2008b:134), we also question whether this tool will be able to overcome “the final phase of enthusiasm, and become a tool of the minorities and of occasional use” (Fernandes, Op. cit.:133)
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