This paper contr ibutes to the discussion on information and communicat ion technology ( ICT) for educat ional purposes. Research was done on the use a vir tual learning environment (VLE) based on Internet technology during a pract ical course for economic students at the Vri je Universi te i t Amsterdam. The VLE has been used f o r many dtferent purposes such as to support team learning, to in...

Reverse algorithm was previously evaluated as encryption method concluding that its simple adoption is unviable, since it does not assurance the pre-image existence. Variable-Length Encryption Method (VLE) was proposed where a alternative algorithm with extra bits is adopted when pre-image computation is not possible. If an adequate secret key is used with VLE it is expected that the final ciph...

Frog Virtual Learning Environment (VLE) is used to enhanced teaching and learning in Malaysia government public schools since 2012. VLE has become the main mechanism in supporting on-line education in primary and secondary schools in Malaysia. Thus, Frog VLE was introduced by Malaysia’s Ministry of Education (MoE) as a tool to support student’s learning which evolved from the 1Bestari Net Proje...

While Learners enjoy the sense of presence and rich visualization in 3D Immersive Virtual Learning Environments, they require more interactivity and pedagogical guidance. Intelligent Pedagogical Agents, IPAs, which are autonomous and intelligent software entities can provide such demands if they are employed in the VLE. They provide interactivity (dialogues), increase motivation and engagement,...

Isobaric vapor–liquid equilibrium (VLE) data for 2-propanol + 1-butanol, 2-propanol + 1-pentanol, 1butanol + 1-pentanol and 2-propanol + 1-butanol + 1-pentanol were measured at 101.3 kPa by using an improved Rose still. All the binary VLE data have passed the traditional area test proposed by Herington. The interaction parameters for the Wilson, NRTL and UNIQUAC equations were determined by reg...

The present paper reports the outputs of a focus group examining the perceived uses, enablers and barriers of utilising virtual learning environments (VLEs), amongst a small group of postgraduate teachers. Sixteen pedagogical/teaching functions were identified and were mapped to MacLean and Scott’s (2011) model of VLE elements. Whilst a number of enablers of VLE use were apparent, participants’...

Major histocompatibility complex (MHC) class I tetramer technology has become the central technique for analyzing antigen-specific CD8(+) T cell responses and it has been widely used to explore the differentiation and formation of memory CD8(+) T cells. Previously, a simplified and efficient procedure for preparing high quality HLA-A*0201 tetramers has been established in our lab and the tetram...

Virtual Learning Environments (VLEs) have provided new perspectives for access to information and enhance learning. However VLE have advantages and positive impact on learning, there are still defies to their design and production. This paper focuses on the presentation and comparison of Learning Design approaches used to design and implement a VLE. In the literature, several Learning Design ap...

The prediction method of the isobaric vapor-liquid-liquid equilibria (VLLE) data for the system ethanol-water-1-butanol and ethanol-2-butanol-water was studied. The parameters for the activity coefficients models were determined from the constituent binary VLE data. With the parameters, the isobaric ternary VLLE data were predicted and compared with the experimental ones obtained in our previou...

Methods and study aims: The incidence of esophageal cancer is rising despite increased surveillance efforts. Volumetric laser endomicroscopy (VLE) is a new endoscopic imaging tool that can allow for targeted biopsy of neoplasia in Barrett's esophagus. We report a series of 6 patients with long-segment Barrett's esophagus ( > 3 cm), who underwent a session of endoscopy with volumetric laser endo...