Search results for "Reference"
showing 10 items of 2491 documents
Investigating technical and pedagogical usability issues of collaborative learning with wikis
2012
Published version of an article in the journal: Informatics in Education : an International Journal. Wikis have been recently promoted as tools that foster collaborative learning. However, there has been little research devoted to the criteria that are suitable to address issues pertinent to collaborative learning. This paper proposes a set of criteria to explore technical and pedagogical usability issues of collaborative learning with wikis. The criteria are then used to evaluate students’ collaborative writing activities. The units of study are wikis that groups of students developed collaboratively using MediaWiki. This paper also reports on technical and pedagogical implications for the…
Non-linear dynamics of alpha and theta rhythm: correlation dimensions and Lyapunov exponents from healthy subject's spontaneous EEG.
1997
The aim of the present paper was to analyze some non-linear dynamic properties of the resting EEG from healthy subjects under eyes closed conditions. For this purpose we digitally filtered the spontaneous EEG in the theta (3-8 Hz) and alpha frequency range (8-13 Hz) and considered these independent rhythms as signals from a deterministic system. Under certain conditions non-linear dynamic systems are able to generate deterministic chaos, which means that similar causes do not produce similar effects. This phenomenon is called sensitive dependence on initial conditions. From different lead positions (F3, F4, Cz, P3, P4, O1 and O2) we calculated the so-called correlation dimension D2, which i…
Starptautiskās izglītības salīdzinājums studentiem ES un Indijas piedāvājumos: izmaksu kvalitātes analīze
2018
Šajā globalizācijas laikmetā vispasaules augstākās izglītības sistēma ir piedzīvojusi nemainīgas pārmaiņas, tautsaimniecība ir atvērta ne tikai tirdzniecības priekšrocībām, bet arī izglītības nozarēs ir notikusi lielāka liberalizācija. Eiropā un Indijā pasaulē ir vecākās izglītības sistēmas, un pašreizējā scenārijā tās pārvērtē augstāko izglītību attiecībā uz izmaksām, kvalitāti un piekļuvi. Izglītība šīm abām valstīm ir bijusi viena no galvenajām prioritātēm, un valsts augstskolas ir pazīstamas ar kvalitāti un izmaksu garantiju, ar nelielām atšķirībām starp tām, tāpēc tiek mēģināts veikt salīdzinošu pētījumu. Bet ir daži faktori, kas ietekmē indivīda lēmumu pieņemšanu, izvēloties viņu vēla…
The barrier height of the F+H2 reaction revisited: coupled-cluster and multireference configuration-interaction benchmark calculations.
2008
Large scale coupled-cluster benchmark calculations have been carried out to determine the barrier height of the F+H2 reaction as accurately as possible. The best estimates for the barrier height of the linear and bent transition states amount to 2.16 and 1.63 kcal/mol, respectively. These values include corrections for core correlation, scalar-relativistic effects, spin-orbit effects, as well as the diagonal Born-Oppenheimer correction. The CCSD(T) basis-set limits are estimated using extrapolation techniques with augmented quintuple and sextuple-zeta basis sets, and remaining N-electron errors are determined using coupled-cluster singles, doubles, triples, quadruples calculations with up t…
Basis-set extrapolation techniques for the accurate calculation of molecular equilibrium geometries using coupled-cluster theory
2006
To reduce remaining basis-set errors in the determination of molecular equilibrium geometries, a basis-set extrapolation (BSE) scheme is suggested for the forces used in geometry optimizations. The proposed BSE scheme is based on separating the Hartree-Fock and electron-correlation contributions and uses expressions obtained by straightforward differentiation of well established extrapolation formulas for energies when using basis sets from Dunning's hierarchy of correlation-consistent basis sets. Comparison with reference data obtained at the R12 coupled-cluster level [CCSD(T)-R12] demonstrates that BSE significantly accelerates the convergence to the basis-set limit, thus leading to impro…
Interactive Decision Aids
2011
Decision support systems assist people in making a decision or choosing a course of action in a nonroutine situation that requires judgment (Haubl and Trifts 2000; Kasper 1996). In online webstores, vendors can easily offer highly interactive types of decision support. These co-called interactive decision aids (IDA) “help consumers in making informed purchase decisions amidst the vast availability of online product offerings” (Wang and Benbasat 2009, p. 3). However, the application of IDA is not restricted to purchase decisions. They are general enough to be of use in any kind of choice task where alternatives are known.
Simple technique for the intraoperative detection of Crohn's strictures with a calibration sphere.
2000
Several methods have been used to detect and evaluate small-bowel strictures in Crohn's disease. We describe a simple technique for the calibration of strictures using a 2.5-cm medical plastic sphere. This method provides an aseptic, safe, and effective calibration of the entire small bowel.
Mutual intelligibility among the sign languages of Belgium and the Netherlands
2015
AbstractIn an exploratory study of mutual intelligibility between the sign languages of the northern part of Belgium (Flemish Sign Language, VGT), the southern part of Belgium (French Belgian Sign Language, LSFB), and the Netherlands (Sign Language of the Netherlands, NGT), we tested the comprehension of VGT by signers of LSFB and NGT. In order to measure the influence of iconic structures (classifier constructions and constructed action) that linguistic analyses have shown to be similar across different sign languages, two genres were compared: narrative and informative signing. To investigate the effect of the overlap between the spoken languages surrounding the Dutch and Flemish Deaf com…
Culture, crisis, and renewal: Introduction, Part I
2017
The articles presented in this issue constitute the second part of the special issue devoted to analyzing the links between culture, crisis, and renewal as part of the research project “Cultural Na...
A Holonic Approach to Shakespeare: The Digital Reference System (DRS)
2012
Prefatory RemarksWhen hypertext was made available on the Internet after 1994 it shaped the concepts of public domain and free access. The web server and browsing system that Tim Berners-Lee and Robert Cailliau designed, determined the future digital, editorial and cultural developments for traditional audiences and digital natives alike. They quickly became the generalized interface tools and thus contributed to today's editorial standards. As they helped to create this innovative environment called the Internet, they also helped to establish many standards such as URL, URI, HTTP HTML or XML, which provided interoperability amongst different platforms and allowed internationalization.Shake…