This case study focused on the electronic portfolio (e-portfolio) as a portrait of teacher growth in an in-service chemistry education graduate program. The e-portfolio provided a multimedia space for systematic documentation of teacher professional growth within the domain of reflective practice. In this study, the outcome and illustration of authentic growth was theorized and evaluated using ...

E-Portfolios are a new type of software and it is still relatively vague to determine, which functions are obligatory – that is which functions constitute characteristic features – and which functions are just optional (“nice to have“). This article describes the concept and the preliminary results of a research project which was conducted to evaluate E-Portfolio software, and aims at providing...

E-portfolios constitute a dynamic research topic in e-learning, since they foster a new philosophy for learning and personal development, which is characterised by open, participatory, self-directed, reflective and collaborative processes. This paper presents an investigation on students’ learning presence in a blended post-graduate course, designed to promote self-directed learning through e-p...

E-Portfolios are a new type of software and it is still relatively vague to determine, which functions are obligatory – that is which functions constitute characteristic features – and which functions are just optional (“nice to have“). This article describes the concept and the preliminary results of a research project which was conducted to evaluate E-Portfolio software, and aims at providing...

The need, use, benefit and potential of e-portfolios have been analysed and discussed by a substantial body of researchers in the education community. However, the development and implementation approaches of e-portfolios to date have faced with various challenges and limitations. This paper presents a new approach of an e-portfolio system design based on Private–Public (PrPl) data index system...

Let the random (stock market) vector X 2 0 be drawn according to a known distribution function F(x), x E R ". A log-optimal portfolio b* is any portfolio b achieving maximal expected log return W* = sup,, E In b'X, where the supremum is over the simplex b 2 0, Cr, b, = 1. An algorithm is presented for finding b*. The algorithm consists of replacing the portfolio b by the expected portfolio b', ...

BACKGROUND We evaluated a newly designed electronic portfolio (e-Portfolio) that provided quantitative evaluation of surgical skills. Medical students at the University of Seville used the e-Portfolio on a voluntary basis for evaluation of their performance in undergraduate surgical subjects. METHODS Our new web-based e-Portfolio was designed to evaluate surgical practical knowledge and skill...

Die Möglichkeiten von E-Learning und Social Media sollten bereits in der Volksschule als Bereicherung des Unterrichts genutzt werden. Alleine bieten sie sicherlich nicht die ultimative Lösung für alle Lehr-/Lernprobleme, noch können herkömmliche Lehr-/Lernmethoden vollständig ersetzen. Dennoch sollte gezielte Einsatz beginnen, damit Schüler*innen weiterführende (Schul-)Ausbildungen gerüstet sin...

a r t i c l e i n f o The technology acceptance model (TAM) has been applied in various fields to study a wide range of information technologies. Although TAM has been developed in this research stream in Taiwan, TAM's issues of measurement have received scant attention. A robust model must perform measurement invariance across different respondent subgroups to ensure that various sample profil...