Search results for "DESIGN"
showing 10 items of 5885 documents
Nonlinear femtosecond pulse propagation in an all-solid photonic bandgap fiber
2009
Nonlinear femtosecond pulse propagation in an all-solid photonic bandgap fiber is experimentally and numerically investigated. Guiding light in such fiber occurs via two mechanisms: photonic bandgap in the central silica core or total internal reflection in the germanium doped inclusions. By properly combining spectral filtering, dispersion tailoring and pump coupling into the fiber modes, we experimentally demonstrate efficient supercontinuum generation with controllable spectral bandwidth.
An overview of research within the Genre and Multimodality framework
2017
This review article provides an overview of the research conducted within the Genre and Multimodality framework, which has been used to describe the multimodality of page-based documents and other multimodal artefacts over the past 15 years. The article explicates the motivation and inspiration for developing the framework, introduces its central theoretical concepts and presents its applications across a number of case studies. Finally, the article discusses the criticism directed towards the model and identifies avenues of future development. peerReviewed
Improving Online Interaction Among Blended Distance Learners at Makerere University
2017
This article reports on a study done to improve interaction among distance learners offering the blended Bachelor of Education (B.Ed.) programme at Makerere University. The study attempts to answer the question: How can a Learning Management System be used to improve learner interaction on the blended B.Ed. programme at Makerere University? The study adopted the Affordance eLearning Design Framework. This study was done among 54 students studying a Policy Planning and Implementation course on the B.Ed. programme. The study employed qualitative approaches to data collection and analysis. These included semi-structured interviews and observation of the interaction logs within the groups and o…
Other-Repetition as a Resource for Participation in the Activity of Playing a Video Game
2009
This article offers an empirically based contribution to the growing body of studies using Conversation Analysis (CA) as a tool for analyzing second/foreign language learning in and through interaction. Building on a sociointeractional view of learning as grounded in the structures of participation in social activities, we apply CA methods to examine the affordances offered by interaction during the activity of playing a video game for additional language learning. We focus on one type of interactional practice, lexical and prosodic repetition, as a recurring resource through which players attend to the game and collaboratively build their understanding and experience of game events. We arg…
Beyond the “student” position: Pursuing agency by drawing on learners’ life-worlds on an EAP course
2018
AbstractIn today’s world, individuals should be able to maintain their expertise amidst constant changes. Thus, this type of agency should be supported in higher education. One approach for a teacher-researcher to examine supporting agency and how it manifests itself in higher education courses is through the learning design. In this article, learning design is defined as the planned course path and the way in which that path is enacted in the course in a real-life setting. Thus, the learning design of a blended EAP course is examined, with a focus on the course assignments in two different groups in two consecutive years. Different types of agency were assumed through the tasks and those t…
Collaborative Game‐play as a Site for Participation and Situated Learning of a Second Language
2009
This paper addresses additional language learning as rooted in participation in the social activity of collaborative game‐play. Building on a social‐interactional view of learning, it analyses some of the detailed practices through which players attend to a video game as the material and semiotic structure that shapes play and creates affordances for additional language learning. We describe how players engage with the language resources offered by the game, drawing on the vocabulary, constructions, prosodic features and utterances modelled on game dialogue, in building their own actions during collaborative play. With these resources, the players display their ongoing engagement with the g…
1-(v,3,r) designs and the equation x+y+z=0 in finite abelian groups
2009
Let (G, +) be a finite abelian group with more than three elements and let B_3 be the family of all the unordered triples {x,y,z} of distinct elements of G such that x+y+z=0. We show that (G, B_3) is a 1-(v,3,r) design if and only if G is either an elementary abelian 3-group or the direct sum of Z/2Z with an elementary abelian 3-group. We also characterize the groups containing at least an element that does not belong to any triple in B_3
La fortificación del Reino de Valencia en la década de1640 a la luz de la revolución militar
2019
This article proposes a study of the traditions in defensive architecture that concurred in the projects designed by Spanish military engineers for the fortification of the Valencian frontier in 1648 and 1649, in the context of the War of Catalonia (1640-1652). For this it is essential to follow the route of the Valencian adaptations to the military revolution in the matter of fortifications throughout the sixteenth century and compare them with those brought to Valencia in 1641 by the Marquis of Leganes and his engineers from the school of Milan.
Performance Assessment of Critical Thinking: Conceptualization, Design, and Implementation
2020
Enhancing students’ critical thinking (CT) skills is an essential goal of higher education. This article presents a systematic approach to conceptualizing and measuring CT. CT generally comprises the following mental processes: identifying, evaluating, and analyzing a problem; interpreting information; synthesizing evidence; and reporting a conclusion. We further posit that CT also involves dealing with dilemmas involving ambiguity or conflicts among principles and contradictory information. We argue that performance assessment provides the most realistic—and most credible—approach to measuring CT. From this conceptualization and construct definition, we describe one possible framework for …
Synchronizing the release rates of salicylate and indomethacin from degradable chitosan hydrogel and its optimization by definitive screening design.
2018
Abstract Three types of ionically crosslinked (with citric acid) chitosan discs were loaded with the highly water- soluble drug, sodium salicylate (SS) and the poorly water-soluble drug, indomethacin (Ind). In separate experiments the hydrated discs were immersed in a de-crosslinking solution comprising of different concentrations of calcium chloride, which induced a controlled erosion of the discs, a process which was optimized to synchronize the release rates of the two drugs over a predetermined period of time. The optimization was accomplished by manipulating six factors: chitosan MW, its amount in the formulation, the concentration of the crosslinker agent, the concentration of the de-…