Editorial

Nuestra sociedad necesita ahora más que nunca un acceso efectivo al conocimiento; por esa razón el bibliotecólogo debe centrarse en el contexto del conocimiento humano registrado y su experiencia, estudiar el documento en su contenido intelectual en lugar del documento como objeto.

RCOS: Real time context sharing across a fleet of smart mobile devices

Today, biodiversity is endangered by the currently applied intensive farming methods imposed on food producers by intermediate actors (e.g.: retailers). The lack of a direct communication technology between the food producer and the consumer creates dependency on the intermediate actors for both producers and the consumers. A tool allowing producers to directly and efficiently market produce that meets customer demands could greatly reduce the dependency enforced by intermediate actors. To this end, in this thesis, we propose, develop, implement and validate a Real Time Context Sharing (RCOS) system. RCOS takes advantage of the widely used publish/subscribe paradigm to exchange messages between producers and consumers, directly, according to their interest and context. Current systems follow a topic-based model or a content-based model. With RCOS, we propose a context-awareness approach into the matching process of publish/subscribe paradigm. Finally, as a proof of concept, we extend the Apache ActiveMQ Artemis software and create a client prototype. We evaluate our proof of concept for larger scale deployment.

A Soft Computing Approach to Quality Evaluation of General Chemistry Learning in Higher Education

In contemporary societies higher education must shape individuals able to solve problems in a workable and simpler manner and, therefore, a multidisciplinary view of the problems, with insights in disciplines like psychology, mathematics or computer science becomes mandatory. Undeniably, the great challenge for teachers is to provide a comprehensive training in General Chemistry with high standards of quality, and aiming not only at the promotion of the student’s academic success, but also at the understanding of the competences/skills required to their future doings. Thus, this work will be focused on the development of an intelligent system to assess the Quality-of-General-Chemistry-Learning, based on factors related with subject, teachers and students.

O marketing e a atuação social das empresas: uma relação possível?

The present work is about a study of multiple cases with exploratory and descriptiveperspective and qualitative emphasis. Its field of study is constituted by three local companieswith description of social performance, with emphasis in the personal interview with thecontrollers. Its main objective consists of understanding as it has occurred the marketingrelation with the enterprise social performance in the context of these companies located inthe State of the Rio Grande do Norte who carry out social investments. For this, it hassearched to analyze the types and characteristics of the developed social actions, to evaluatethe motivations and objectives of the accomplishment of social actions, to verify theimportance and influence of the social performance in the dynamics of the companies, toverify the level of specific knowledge and information in the areas of marketing and socialperformance in the companies and to evaluate the process of communication (promotion andspreading) of the social performance carried out by the companies. It has been verified thatthe company A directly associates it its social and ambient activities with differentiationbenefits, competitiveness, creation of value, loyalty, relationships, image, prestige,positioning of the company, sale and financial return, beyond benefits in the internal level asbigger motivation of its employees and retention of talents, not existing rejection to theinterlacement of the concepts related to the marketing and the social one. Already in companyB rejection in relating its practical social to the marketing, being observed after posteriorquestionings, that the relation of direct and indirect form exists and those divulgations of theseactions are carried out, contradicting the arguments of the controllers of that the actions wouldnot be carried out to generate media. In company C, it been verified rejection andcontradiction with relation to the concepts related to the marketing, alleging itself that theimage of the harnessed company to its social performance is not used in proper benefit,evidencing itself that this company divulges its action and is marketable benefited, even so isnot this the main objective of its social programs. It has concluded that the association ofthese two concepts is positive and favorable to the development of the businesses and thesocial actions of the companies, legitimizing them and benefiting the involved company,groups in the actions and the society that profits socially from the private social involvement in the social matters

INTERNET EN LAS BIBLIOTECAS PÚBLICAS COSTARRICENSES: SU IMPORTANCIA PARA ACORTAR LA BRECHA DIGITAL

Al ser la biblioteca pública de acceso libre y gratuito, se constituye como uno de los medios de información y conocimiento que ofrece oportunidades a todos los miembros de la comunidad y desde donde se pueden hacer efectivos los derechos a la información, la educación, la cultura y la recreación.De acuerdo con la UNESCO, es responsabilidad de la bibliotecapública facilitar el acceso al conocimiento y a la información a través de Internet, y con ello lograr su desarrollo y evolución tecnológica.Actualmente, la biblioteca pública costarricense esta incursionando paulatinamente en el mundo de las TIC y está tratando de integrarse en la revolución digital para ofrecer servicios novedosos, de calidad y seguir siendo útiles para los ciudadanos (as), y a la vez, está procurando acortar la brecha digital de quienes tienen menos oportunidades.

Assessing the Role of General Chemistry Learning in Higher Education

The inclusion of General Chemistry (GC) in the curricula of higher education courses in science and technology aims, on the one hand, to develop students' skills necessary for further studies and, on the other hand, to respond to the need of endowing future professionals of knowledge to analyze and solve multidisciplinary problems in a sustainable way. The participation of students in the evaluation of the role played by the GC in their training is crucial, and the analysis of the results can be an essential tool to increase success in the education of students and improving practices in various professions. Undeniably, this work will be focused on the development of an intelligent system to assess the role of GC. The computational framework is built on top of a Logic Programming approach to Knowledge Representation and Reasoning, complemented with a problem solving methodology moored on Artificial Neural Networks. The results so far obtained show that the proposed model stands for a good start, being its overall accuracy higher than 95%.

Optimization of quantum states for signaling across an arbitrary qubit noise channel with minimum-error detection

International audience

Parasitoses internas e frequência de desparasitação em cães do concelho de Vila Franca de Xira, Portugal

Dissertação de Mestrado Integrado em Medicina Veterinária

O comércio electrónico: realidade algarvia

Dissertação de mest. em Gestão Empresarial, Faculdade de Economia, Univ. do Algarve, 2001

Subjetividade e interação nos fóruns online reflexões sobre a permanência em educação a distância

Este artigo foi desenvolvido com objetivo de produzir indicadores que possam melhorar a funcionalidade dos fóruns online e contribuir numa maior permanência dos estudantes da Educação a Distância. Foi realizada uma análise, orientada pela Epistemologia Qualitativa, dos processos subjetivos e interacionais produzidos nos fóruns de apresentação e fóruns temáticos de duas disciplinas de formação pedagógica – (1) Estratégias de Ensino e Aprendizagem e (2) A Psicologia e a Construção do Conhecimento – ofertadas nos cursos de Licenciatura em Teatro, Música e Artes Visuais, UAB/UnB. As informações produzidas apontam para a necessidade de reconhecimento e valorização do estudante como sujeito na aprendizagem, a consolidação da presença pedagógica do tutor, a valorização dos fóruns como espaços de aprendizagem e a produção de espaços sociais de pertencimento. ______________________________________________________________________________ ABSTRACT

Segurança da Informação no Ciberespaço – A Cibereducação no caminho da Cibersegurança

O papel das Tecnologias de Informação (TI) nas sociedades atuais épreponderante. O aparecimento da Internet e a vulgarização do seu uso veio alterar o paradigma do modo de funcionamento das sociedades. As sociedades industriais transformaram-se em sociedades da informação, onde o conhecimento e a informação são valorizados e têm um papel fulcral. A internet,primeiramente considerada como um espaço de liberdade absoluta e que possibilitava oacesso e compartilhamento de dados instantaneamente e a partir de qualquer ponto do globo, é hoje vista como um fator de insegurança. O ciberespaço está suscetível a novas formas de ameaça sobre a forma de crimeno mundo virtual. Os ciberataques colocam em risco a privacidade e liberdade dos cidadãos, põem em causa a soberania do Estado e podem, ainda, divulgar informação queameace a segurança nacional. O presente trabalho discute os desafios que o ciberespaço nos coloca e analisa acomponente legal que contribui para a cultura de segurança no ciberespaço, por forma autilizá-lo de forma mais livre e fiável. E não só, também propõe formas de mitigar os resultados de um ciberataqueatravés de mecanismos de formação, onde cada um tem conhecimento dos problemasatuais da internet e quais as eventuais soluções para se protegerem.

THE EFFECT OF EASTERN KENTUCKY COAL FIRES ON LOCAL AIR QUALITY AND PERSONAL HEALTH

The purpose of this project was to investigate student learning in the areas of earth science and environmental responsibility using the subject of coal fires. Eastern Kentucky, where this study was performed, has several coal fires burning that affect the local air quality and may also affect the health of people living near them. This study was conducted during the regular education of 9th grade Earth Science classroom in Russell Independent Schools, located in Russell, Kentucky. Students conducted internet research, read current articles on the subject of coal fire emissions and effect on local ecology, and demonstrated what they learned through summative assessments. There were several aspects of coalmines and coal fires that students studied. Students were able to take this knowledge and information and use it as a learning tool to gain a better understanding of their own environment. Using the local history and geology of coalmines, along with the long tradition of mine production, was a very beneficial starting point, allowing students to learn about environmental impact, stewardship of their local environment, and methods of preserving and protecting the ecosystem.

Temporal solitonic crystals and non-Hermitian informational lattices

Clusters of temporal optical solitons—stable self-localized light pulses preserving their form during propagation—exhibit properties characteristic of that encountered in crystals. Here, we introduce the concept of temporal solitonic information crystals formed by the lattices of optical pulses with variable phases. The proposed general idea offers new approaches to optical coherent transmission technology and can be generalized to dispersion-managed and dissipative solitons as well as scaled to a variety of physical platforms from fiber optics to silicon chips. We discuss the key properties of such dynamic temporal crystals that mathematically correspond to non-Hermitian lattices and examine the types of collective mode instabilities determining the lifetime of the soliton train. This transfer of techniques and concepts from solid state physics to information theory promises a new outlook on information storage and transmission.

Euclidean Distance Between Haar Orthogonal and Gaussian Matrices

In this work, we study a version of the general question of how well a Haar-distributed orthogonal matrix can be approximated by a random Gaussian matrix. Here, we consider a Gaussian random matrix (Formula presented.) of order n and apply to it the Gram–Schmidt orthonormalization procedure by columns to obtain a Haar-distributed orthogonal matrix (Formula presented.). If (Formula presented.) denotes the vector formed by the first m-coordinates of the ith row of (Formula presented.) and (Formula presented.), our main result shows that the Euclidean norm of (Formula presented.) converges exponentially fast to (Formula presented.), up to negligible terms. To show the extent of this result, we use it to study the convergence of the supremum norm (Formula presented.) and we find a coupling that improves by a factor (Formula presented.) the recently proved best known upper bound on (Formula presented.). Our main result also has applications in Quantum Information Theory.

Humanidades digitales y la escuela 2.0

During the last decades the growth and development of Information and Communication Technologies (ICT) have led us to a new social paradigm that reflects a deep change not only in an individual but also in a social behavioural pattern. All these changes define the so-called knowledge and information society. This social evolution has had different textual states and types as its main core and instrument of transformation therefore scholars and specialists in the field of Humanities have not missed the opportunity of studying recent phenomena, which have come from the current setting given by new technologies. Researchers in Humanities have had to reconsider their own traditional working method based on printed text in order to analyse how nowadays we search for data, select them, analyse them and the ways we create and spread new information and knowledge. Having in mind this scenario where humanist works, the concept of Digital Humanities has arisen conditioned by the existence of cyberspace, digital text, hypertext, on-line text, implementation of new ways of communication, global access to information and various elements which build a common methodology for all humanistic disciplines. Most of these changes have affected the educational system and education as an academic and humanistic discipline.