33,330 research outputs found
Towards a framework for investigating tangible environments for learning
External representations have been shown to play a key role in mediating cognition. Tangible environments offer the opportunity for novel representational formats and combinations, potentially increasing representational power for supporting learning. However, we currently know little about the specific learning benefits of tangible environments, and have no established framework within which to analyse the ways that external representations work in tangible environments to support learning. Taking external representation as the central focus, this paper proposes a framework for investigating the effect of tangible technologies on interaction and cognition. Key artefact-action-representation relationships are identified, and classified to form a structure for investigating the differential cognitive effects of these features. An example scenario from our current research is presented to illustrate how the framework can be used as a method for investigating the effectiveness of differential designs for supporting science learning
Nodes and Arcs: Concept Map, Semiotics, and Knowledge Organization.
Purpose – The purpose of the research reported here is to improve comprehension of the socially-negotiated identity of concepts in the domain of knowledge organization. Because knowledge organization as a domain has as its focus the order of concepts, both from a theoretical perspective and from an applied perspective, it is important to understand how the domain itself understands the meaning of a concept.
Design/methodology/approach – The paper provides an empirical demonstration of how the domain itself understands the meaning of a concept. The paper employs content analysis to demonstrate the ways in which concepts are portrayed in KO concept maps as signs, and they are subjected to evaluative semiotic analysis as a way to understand their meaning. The frame was the entire population of formal proceedings in knowledge organization – all proceedings of the
International Society for Knowledge Organization’s international conferences (1990-2010) and those of the annual classification workshops of the Special Interest Group for Classification Research of the American Society for Information Science and Technology (SIG/CR).
Findings – A total of 344 concept maps were analyzed. There was no discernible chronological pattern. Most concept maps were created by authors who were professors from the USA, Germany, France, or Canada. Roughly half were judged to contain semiotic content. Peirceian semiotics predominated, and tended to convey greater granularity and complexity in conceptual terminology.
Nodes could be identified as anchors of conceptual clusters in the domain; the arcs were identifiable as verbal relationship indicators. Saussurian concept maps were more applied than theoretical; Peirceian concept maps had more theoretical content.
Originality/value – The paper demonstrates important empirical evidence about the coherence of the domain of knowledge organization. Core values are conveyed across time through the concept maps in this population of conference paper
Emeralds from the Delbegetey deposit (Kazakhstan): mineralogical characteristics and fluid-inclusion study
The aim of this study is to provide the first detailed mineralogical and fluid-inc1usion description of emeralds from the Delbegetey deposit (Kazakhstan). The characteristic features of Delbegetey emeralds are established: they have dissolution figures on crystal faces, bluish colour and distinct colour zoning; the refractive indices are ro = 1.566-1.570, E = 1.558-1.562, and the specific gravity is 2.65±0.005, relatively low for natural emeralds; they have very small concentrations of the impurities (Fe, Mg, Na and others) typical of other emeralds, and contain Cr and V; there is a significant preponderance of vapour in fluid inc1usions of all types and there is liquid-to-vapour homogenization of primary fluid inc1usions (at 395-420°C). The lattice oxygen isotope composition data obtained (0180 SMOW value of 11.3%0) situate the deposit within the range characteristic of other granite-related emerald deposits. Emerald crystallization took place in low-density (0.40-0.55 g/cm3 ) aqueous fluid, with the following chemical composition (mol.%): 75.6-97.4 HzO, 0.0-18.4 caz, 0.0-0.9 C~, and 4.06-9.65 wt.% NaCI equiv. salinity. According to the calculated isochores, the pressure offormation ofthe Delbegetey emeralds can be estimated at 570-1240 bar
EBSLG Annual General Conference, 18. - 21.05.2010, Cologne. Selected papers
Am 18.-21. Mai 2010 fand in der Universitäts- und Stadtbibliothek (USB) Köln die „Annual General Conference“ der European Business Schools Librarians Group (EBSLG) statt. Die EBSLG ist eine relativ kleine, aber exklusive Gruppe von Bibliotheksdirektorinnen und –direktoren bzw. Bibliothekarinnen und Bibliothekaren in Leitungspositionen aus den Bibliotheken führender Business Schools.
Im Mittelpunkt der Tagung standen zwei Themenschwerpunkte: Der erste Themenkreis beschäftigte sich mit Bibliotheksportalen und bibliothekarischen Suchmaschinen. Der zweite Themenschwerpunkt Fragen der Bibliotheksorganisation wie die Aufbauorganisation einer Bibliothek, Outsourcing und Relationship Management. Der vorliegende Tagungsband enthält ausgewählte Tagungsbeiträge
Making visible the invisible through the analysis of acknowledgements in the humanities
Purpose: Science is subject to a normative structure that includes how the
contributions and interactions between scientists are rewarded. Authorship and
citations have been the key elements within the reward system of science,
whereas acknowledgements, despite being a well-established element in scholarly
communication, have not received the same attention. This paper aims to put
forward the bearing of acknowledgements in the humanities to bring to the
foreground contributions and interactions that, otherwise, would remain
invisible through traditional indicators of research performance.
Design/methodology/approach: The study provides a comprehensive framework to
understanding acknowledgements as part of the reward system with a special
focus on its value in the humanities as a reflection of intellectual
indebtedness. The distinctive features of research in the humanities are
outlined and the role of acknowledgements as a source of contributorship
information is reviewed to support these assumptions.
Findings: Peer interactive communication is the prevailing support thanked in
the acknowledgements of humanities, so the notion of acknowledgements as
super-citations can make special sense in this area. Since single-authored
papers still predominate as publishing pattern in this domain, the study of
acknowledgements might help to understand social interactions and intellectual
influences that lie behind a piece of research and are not visible through
authorship.
Originality/value: Previous works have proposed and explored the prevailing
acknowledgement types by domain. This paper focuses on the humanities to show
the role of acknowledgements within the reward system and highlight publication
patterns and inherent research features which make acknowledgements
particularly interesting in the area as reflection of the socio-cognitive
structure of research.Comment: 14 page
An Object-Oriented Model for Extensible Concurrent Systems: the Composition-Filters Approach
Applying the object-oriented paradigm for the development of large and complex software systems offers several advantages, of which increased extensibility and reusability are the most prominent ones. The object-oriented model is also quite suitable for modeling concurrent systems. However, it appears that extensibility and reusability of concurrent applications is far from trivial. The problems that arise, the so-called inheritance anomalies are analyzed and presented in this paper. A set of requirements for extensible concurrent languages is formulated. As a solution to the identified problems, an extension to the object-oriented model is presented; composition filters. Composition filters capture messages and can express certain constraints and operations on these messages, for example buffering. In this paper we explain the composition filters approach, demonstrate its expressive power through a number of examples and show that composition filters do not suffer from the inheritance anomalies and fulfill the requirements that were established
- …