Teachers’ conceptions about the nature of technology and the Science-Technology-Society-Environment relationships

Este trabajo pretende, en primer lugar, cuestionar extendidas concepciones de la tecnología que la presentan como mera aplicación de los conocimientos científicos y que están contribuyendo a una imagen distorsionada y empobrecida de la naturaleza de la ciencia y la tecnología y, consecuentemente, al desinterés e incluso rechazo hacia su estudio. En segundo lugar se presentan los resultados de una investigación cuyo objetivo es analizar en qué medida dichas concepciones afectan incluso al profesorado encargado de la alfabetización tecnológica. Finalmente se aborda la transformación de dichas concepciones.This paper aims, firstly, to question widespread conceptions of technology, presented as a simple application of scientific knowledge, which are contributing to a distorted and impoverished view of the nature of science and technology and, therefore, to students’ lack of interest and even rejection of the study of techno-scientific subjects. Secondly, we present an analysis of how these conceptions affect even teachers in charge of technological literacy. Finally, we contemplate how to overcome these conceptions

Deliberative journalism and citizenship: principles and practices in the Portuguese regional press

FR: Quelle est la perception que les journalistes ont du rôle des lecteurs dans la vie démocratique? Quel rôle jouent les journalistes par rapport à l'espace public et le débat politique? L'objectif global de cette étude consiste à enquêter la relation entre la presse locale, les citoyens et les pratiques civiques. Il a comme point de départ une double approche théorique, la théorie de la démocratie délibérative et le mouvement du journalisme publique, afin d'évaluer le champ d'application d'une conception du «journalisme délibérative." Dans le projet "Agenda des citoyens: journalisme et participation politique dans les médias portugais", un questionnaire a été donné à 45 journalistes de huit journaux régionaux au Portugal. Les résultats révèlent qu, bien que les journalistes apprécient les principes qui sous-tendent le mouvement du journalisme public et délibérative (ce qui suggère que la conscience délibérative émerge), ils expriment aussi une orientation journalistique conventionnelle.What is the perception that journalists have about the citizens' role in democratic life? What is the role of journalists in relation to public sphere and political debate? The main goal of this study is to investigate the relationship between the local press, citizens and civic practices. It takes as starting point a dual theoretical approach, the theory of deliberative democracy and the movement of public journalism, to assess the scope of a conception of "deliberative journalism." Under the project "Citizens' Agenda: journalism and political participation in the Portuguese media ", a questionnaire was delivered to 45 journalists from eight regional newspapers in Portugal. The results show that although the journalists appreciate the principles underlying the public and deliberative journalism movements (which suggests that a deliberative consciousness is emerging), also express an conventional journalism approach

Imagen de la tecnología transmitida por los textos de educación tecnológica

Cuestionamos en este artículo la transmisión por los textos de tecnología de una visión simplista y socialmente neutra de la tecnología como "ciencia aplicada", ignorando, o tratando muy superficialmente, las complejas relaciones ciencia-tecnología-sociedad-ambiente (CTSA)

Concepciones docentes acerca de la naturaleza de la tecnología y de las relaciones Ciencia, Tecnología, Sociedad y Ambiente en la educación tecnológica.

This paper aims, firstly, to question widespread conceptions of technology, presented as a simple application of scientific knowledge, which are contributing to a distorted and impoverished view of the nature of science and technology and, therefore, to students' lack of interest and even rejection of the study of techno-scientific subjects. Secondly, we present an analysis of how these conceptions affect teachers in charge of technological literacy. Finally, we contemplate how to overcome these conception

50 anos de estudos sobre o agendamento – Caminhos de uma teoria dos media

Com o presente número da revista Mediapolis pretendemos marcar os 50 anos decorridos sobre o seminal estudo de Chapel Hill, que deu origem a uma das áreas mais consistentes de estudos das Ciências da Comunicação, realizados sobre os media: a teoria do agenda setting ou do agendamento. O início desta história teve origem quando Maxwel McCombs e Donald Shaw, então dois jovens investigadores, decidiram analisar como, a propósito das eleições presidenciais norte- americanas de 1968, que opuseram Hubert Humphrey e Richard Nixon, os media poderiam, de algum modo, influenciar a opinião pública. Para o efeito, realizaram um estudo tendo por base 100 eleitores indecisos, residentes em Chapel Hill, na Carolina do Norte, acabando por encontrar um coeficiente muito forte de correlação entre a agenda mediática e a agenda dos eleitores. A agenda setting, numa fase inicial, começou por afirmar que pessoas acabam por conhecer determinados assuntos pelo efeito da seleção realizada pelos media que, deste modo, transforma temas, pessoas e acontecimentos em matéria privilegiada do debate público, marcando um paralelismo entre a agenda dos media e a agenda da opinião pública.info:eu-repo/semantics/publishedVersio

Segtor: Rapid Annotation of Genomic Coordinates and Single Nucleotide Variations Using Segment Trees

Various research projects often involve determining the relative position of genomic coordinates, intervals, single nucleotide variations (SNVs), insertions, deletions and translocations with respect to genes and their potential impact on protein translation. Due to the tremendous increase in throughput brought by the use of next-generation sequencing, investigators are routinely faced with the need to annotate very large datasets. We present Segtor, a tool to annotate large sets of genomic coordinates, intervals, SNVs, indels and translocations. Our tool uses segment trees built using the start and end coordinates of the genomic features the user wishes to use instead of storing them in a database management system. The software also produces annotation statistics to allow users to visualize how many coordinates were found within various portions of genes. Our system currently can be made to work with any species available on the UCSC Genome Browser. Segtor is a suitable tool for groups, especially those with limited access to programmers or with interest to analyze large amounts of individual genomes, who wish to determine the relative position of very large sets of mapped reads and subsequently annotate observed mutations between the reads and the reference. Segtor (http://lbbc.inca.gov.br/segtor/) is an open-source tool that can be freely downloaded for non-profit use. We also provide a web interface for testing purposes

Overcoming the oblivion of technology in physics education

Technology is generally viewed as ‘applied science’, that is to say, as something that comes ‘after’ science. This conception justifies the lack of attention paid to technology in science education, especially where physics education is concerned. In this chapter we question this simplistic view of the science-technology relationship, historically rooted in the unequal appreciation of intellectual and manual work, and we try to show how the absence of the technological dimension in science education contributes to a naïve and distorted view of science which deeply affects the necessary scientific and technological literacy of all citizens, as well as the preparation of the future scientists and technicians that our societies demand

Concepciones acerca de la naturaleza de la tecnología y de las relaciones Ciencia, Tecnología, Sociedad y Ambiente en la educación tecnológica

Este trabajo pretende, en primer lugar, cuestionar extendidas concepciones de la tecnología que la presentan como mera aplicación de los conocimientos científicos y que están contribuyendo a una imagen distorsionada y empobrecida de la naturaleza de la ciencia y la tecnología y, consecuentemente, al desinterés e incluso rechazo hacia su estudio. En segundo lugar se presentan los resultados de una investigación cuyo objetivo es analizar en qué medida dichas concepciones afectan incluso al profesorado encargado de la alfabetización tecnológica. Finalmente se aborda la transformación de dichas concepciones.This paper aims, firstly, to question widespread conceptions of technology, presented as a simple application of scientific knowledge, which are contributing to a distorted and impoverished view of the nature of science and technology and, therefore, to students' lack of interest and even rejection of the study of techno-scientific subjects. Secondly, we present an analysis of how these conceptions affect even teachers in charge of technological literacy. Finally, we contemplate how to overcome these conceptions

Effects of different undersizing site preparations on implant stability

As immediate loading protocols are becoming more frequent, the primary stability of implants has become an essential criterion for the osseointegration of dental implants. Based on this, the objective of this study was to understand the influence of different undersized surgical preparation sites on the insertion torque (IT) and implant stability quotient (ISQ). Four different site-preparation protocols were performed on fresh humid type III bovine bone: one control, the standard protocol recommended by the manufacturer (P1), and three variations of undersized techniques (P2, P3 and P4). The implant used was VEGA by Klockner Implant System. The sample size was n = 40 for each of the four groups. A torquemeter was used to measure the IT, and the ISQ was measured with a Penguin RFA. Both variables showed a tendency to increase as the preparation technique was reduced, although not all the values were statistically significant (p < 0.05) when comparing with the standard preparation. The preparations without a cortical drill, P2 and P4, showed better results than those with a cortical drill. Given the limitations of this study, it can be concluded that reducing the implant preparation can increase both the IT and ISQ. Removing the cortical drill is an effective method for increasing implant stability, although it should be used carefully