1,720,965 research outputs found
Tele-Assessment of the Tele-Taught University Degree in Computer Science Engineering
No full textSince 2001 all courses of a 3-year university degree in computer science engineering at the
University of Padova are being taught in 4 geographically distributed sites using real-time simultaneous teleteaching
technologies. The aim of the system is to deliver academic lessons to geographically distributed
classrooms, preserving as much as possible the way the teacher communicates and interacts with students in a
traditional classroom.
The focus is on the quality assessment survey submitted to both students and teaching staff at the end of the
(last) 3rd period. Objectives of the survey are: to assess the effectiveness of the lessons delivered with teleteaching
modality; to get indications on the perceived quality of the tele-teaching technology, of classrooms,
laboratories and services in the remote sites. An on-line questionnaire has been designed and is currently
submitted to all the teachers and all the students attending these courses in the 4 sites.
The Moodle environment has been adopted to create online courses integrated with the above mentioned teleteaching
platform. All aspects concerned in the question of the survey have been statistically analyzed, and
results report grouping data by enrolment year, site and role of the answering have been disseminated through
the web site
Effectiveness assessment of tele-taught vs. traditional courses of a 3-year university degree in computer science engineering
No full textThis paper aims at perform an effectiveness assessment of tele-taught university courses, based on
quantitative data regarding fully cohortes of students. The assessment works up by analyzing grades
coming from the traditional and tele-taught courses to bring out differences in objective effectiveness
of both the methodologies.
Since more than 5 years, all courses of a 3-year University degree in Computer Science Engineering
at the University of Padua have been taught in 4 geographically distributed sites using real-time
simultaneous tele-teaching technologies. Main differences between tele-taught and traditional lessons
are: exploitation of new technologies (distributed network infrastructures, high quality multimedia
transmission, etc.); the number of students attending in teleteaching classrooms are fewer than the
traditional ones; and the tutor presence, who helps and supports students with practice sessions.
The paper begins with the description of the tele-teaching platform and the teaching approach,
because the roles of both teaching people and technolgies underlie the assessment analysis. On this
background the methodology of the assessment is described and finally the analysis.
Results highlight the same effectiveness of both tele-taught and traditional lessons: performance
differences among students are mainly due to their high school of origin. The experience at University
of Padua reveals the soundness of its own teleteaching approach in order to fulfill the needs of
commuter students, saving the daily travel time from home to University main site
Novel glycosylated (LyS(7))-dermorphin analogues: synthesis, biological activity and conformational investigations
No full textSyntheses of the [Lys(7)]- and [Hyp(6),LyS(7)]-dermorphin analogues in which either Tyr(5) or Hyp(6) are O-glucosylated are described. For comparison, the carbohydrate-free peptides have also been prepared. Structural investigations by FF-IR and CD measurements were carried out on the synthetic analogues and some preliminary pharmacological experiments were also performed.
The biological potency of the glucosylated analogues was compared with that of the mu-opioid receptor agonist dermorphin in GPI preparations. Glucosylation of either Tyr(5) or Hyp(6) reduces the potency of both [Lys(7)]-dermorphin and [Hyp(6),Lys(7)]-dermorphin. The effect induced by the Tyr(5) glucosylation is quite strong and the potency of both peptides is reduced by about 150 times. A similar but less dramatic effect is induced by the glucosylation of the Hyp6 residue, and the potency of the parent peptide is reduced by about 15 times. The presence of acetyl groups on the sugar hydroxyl functions further reduces the agonistic potency of the glucosylated analogues. The analgesic potency of [Hyp(6),Lys(7)]-, [Hyp(beta Glc)(6),Lys(7)]- and [Try(beta Glc)(5),Lys(7)]-dermorphin were also tested in vivo by the tail-flick test. The glucosylated hydroxyproline-containing analogue is 8-10 times less active than the parent peptide, but its analgesic effect lasts significantly longer. Copyright (c) 2006 European Peptide Society and John Wiley & Sons, Ltd
Antimicrobial peptides: synthesis and antibacterial activity of linear and cyclic drosocin and apidaecin 1b analogues.
No full text
Going Beyond Counting First Authors in Author Co-citation Analysis
Full text linkThe present study examines one of the fundamental aspects of author co-citation analysis (ACA) - the way co-citation
counts are defined. Co-citation counting provides the data on which all subsequent statistical analyses and mappings
are based, and we compare ACA results based on two different types of co-citation counting - the traditional type that
only counts the first one among a cited work's authors on the one hand and a non-traditional type that takes into
account the first 5 authors of a cited work on the other hand. Results indicate that the picture produced through this non-traditional author co-citation counting contains more coherent author groups and is therefore considerably clearer. However, this picture represents fewer specialties in the research field being studied than that produced through the traditional first-author co-citation counting when the same number of top-ranked authors is selected and analyzed. Reasons for these effects are discussed
Variations on the Author
Full text link“Variations on the Author” discusses two of Eduardo Coutinho’s recent films (Um Dia na Vida, from 2010, and Últimas Conversas, posthumously released in 2015) and their contribution to the general question of documentary authorship. The director’s filmography is characterized by a consistent yet self-effacing form of authorial self-inscription: Coutinho often features as an interviewer that rather than express opinions propels discourses; an interviewer that is good at listening. This mode of self-inscription characterizes him as an author who is not expressive but who is nonetheless markedly present on the screen. In Um Dia na Vida, however, Coutinho is completely absent form the image, while Últimas Conversas, on the contrary, includes a confessional prologue that moves the director from the margins to the center of his films. This article examines the ways in which these works stand out in the filmography of a director who offers new insights into the notion of cinematic authorship
Appropriate Similarity Measures for Author Cocitation Analysis
Full text linkWe provide a number of new insights into the methodological discussion about author cocitation analysis. We first argue that the use of the Pearson correlation for measuring the similarity between authors’ cocitation profiles is not very satisfactory. We then discuss what kind of similarity measures may be used as an alternative to the Pearson correlation. We consider three similarity measures in particular. One is the well-known cosine. The other two similarity measures have not been used before in the bibliometric literature. Finally, we show by means of an example that our findings have a high practical relevance.information science;Pearson correlation;cosine;similarity measure;author cocitation analysis
Dispelling the Myths Behind First-author Citation Counts
Full text linkWe conducted a full-scale evaluative citation analysis study of scholars in the XML research field to explore just how different from each other author rankings resulting from different citation counting methods actually are, and to demonstrate the capability of emerging data and tools on the Web in supporting more realistic citation counting methods. Our results contest some common arguments for the continued
use of first-author citation counts in the evaluation of scholars, such as high correlations between author rankings by first-author citation counts and other citation
counting methods, and high costs of using more realistic citation counting methods that are not well-supported by the ISI databases. It is argued that increasingly available digital full text research papers make it possible for citation analysis studies to go beyond what the ISI databases have directly supported and to employ more
sophisticated methods
- …
