1,024 research outputs found
eAssessment: Who's Involved
So there are tutors and students, but who else? How does a manual key quality process shift into the e-environment? We work through the assessment lifecycle of a unit from creation of the assessments themselves, along with maintenance of quality processes and procedures, through to the methods and practices for ease of submission, and onto marking, feedback, resubmissions and successful completion. Key aspirations combine preservation of quality educational standards, security of paperwork and efficacy of functionality whilst aiming to prevent additional workload falling on either tutors or students
Algorithms for Coloring Quadtrees
We describe simple linear time algorithms for coloring the squares of
balanced and unbalanced quadtrees so that no two adjacent squares are given the
same color. If squares sharing sides are defined as adjacent, we color balanced
quadtrees with three colors, and unbalanced quadtrees with four colors; these
results are both tight, as some quadtrees require this many colors. If squares
sharing corners are defined as adjacent, we color balanced or unbalanced
quadtrees with six colors; for some quadtrees, at least five colors are
required.Comment: 7 pages, 9 figure
Building educational confidence and affinity through Online Induction Activities
We aim to demonstrate the support and development steps taken throughout a week-long online induction. From application, through to enrolment and becoming an online student, often returning to education after many years, our students are likely to experience many emotions over this induction period. We recognise the different key foundation areas required to strengthen personal confidence and determination as an individual remote student. The intention is to help students overcome their initial personal apprehension by building intrinsic trust in the capabilities of BU from all standpoints including technical, educational and pastoral. By the end of the induction week, students have the opportunity to formulate a clear picture of the environment in which they will be learning, establish an initial impression of degree level study, recognise the levels of support available to them and begin to identify their own personal resolve and how to make this work for them whilst studying from a remote location
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Systematic Scatterometer Wind Errors Near Coastal Mountains.
Satellite scatterometers provide the only regular observations of surface wind vectors over vast swaths of the world oceans, including coastal regions, which are of great scientific and societal interest but still present challenges for remote sensing. Here we demonstrate systematic scatterometer wind errors near Hawaii's Big Island: Two counter-rotating lee vortices, which are clear in the International Comprehensive Ocean-Atmosphere Data Set ship-based wind climatology and in aircraft observations, are absent in the Jet Propulsion Laboratory and Remote Sensing Systems scatterometer wind climatologies. We demonstrate similar errors in the representation of transient Catalina Eddy events in the Southern California Bight. These errors likely arise from the nonuniqueness of scatterometer wind observations, that is, an "ambiguity removal" is required during processing to select from multiple wind solutions to the geophysical model function. We discuss strategies to improve the ambiguity selection near coastal mountains, where small-scale wind reversals are common
The sensory acceptance of fibre-enriched cereal foods:a meta-analysis
Improved understanding of the sensory responses to fibre fortification may assist manufacturers and health promotion efforts. The effects of fibre fortification (or modified ingredients) on sensory acceptability of baked cereal foods (bread, cookies, muffins) were estimated by linear random-effects meta-analysis of twenty eligible studies (869 panellists, 34% male). As little as 2 g per 100 g fortification caused moderate–large reductions in overall acceptability, flavour acceptability, and appearance acceptability in most items, with cookies most negatively affected. Fortification of base nonfortified foods with low initial acceptability improved acceptability; however, at higher basic levels, fortification lowered acceptability. Fortification improved texture acceptability of muffins and bread with low base acceptability, but lowered texture acceptability when base acceptability was high. Flavour improvement of muffins with fortification decreased with increasing base food acceptability. Fibre fortification of baked cereal foods lowers acceptability, but food format and base food acceptability affect the magnitude and direction of responses. Refining fibre fortification approaches could improve consumer uptake
Generation of high speed polarization modulated data using a monolithically integrated device
We report on the generation of high speed polarization modulated data via direct electrical binary data injection to the phase shifter section of a monolithically integrated laser diode integrated with a polarization controller. The device is fabricated on standard InP/AlGaInAs multiple quantum-well material and consists of a semiconductor laser, a passive polarization mode convertor and an active differential phase-shifter section. We demonstrate the generation of 300 Mbit/s Polarization Shift Keyed data
The Scholarship of Teaching and Learning as a subversive activity
One of the most serious challenges facing higher education today is the erosion of academic culture—a declining sense that faculty form a community whose members reflect, deliberate, and make decisions together in the name of a shared educational vision. Our experience with Gonzaga University’s Scholarship of Teaching and Learning (SoTL) Initiative suggests that SoTL can be a powerful counter force to this erosion. What became increasingly evident as the initiative unfolded was that its most important result was the creation of a kind of alternative academic community that stands in opposition to many of the dis-integrative, disempowering forces at work in higher education. The scholarly examination of practice, done in a collaborative context, changed participants’ perceptions of learning, of themselves as teachers, and of the larger endeavor of which they are a part. Thus, we came to see the SoTL initiative as a subversive activity in the sense used by Neil Postman and Charles Weingartner in their 1969 book, Teaching as a Subversive Activity: one that invites critical questions about education’s purposes, practices, and underlying assumptions, and in so doing reanimates core values
Sputter-deposited magneto-optical garnet thin films for all-mode Faraday rotators
Faraday rotators in optical isolators, typically composed of iron garnets, are photonic analogues of electrical diodes in that they do not allow reciprocal transmission of light. Isolators are especially important for blocking back-reflected light from reaching source lasers, as such feedback gives rise to unwanted noise and instabilities. In commonly implemented photonic integrated circuits (PICs), isolation is the only critical function that cannot yet be achieved by direct integration. While several techniques have been explored for integrating high-gyrotropy garnets into silicon-on-insulator PICs, this article focuses on sputter deposition, which is the most up-scalable process. High-gyrotropy Ce-doped yttrium iron garnet on nongarnet substrates can be made by sputter deposition with the use of garnet seed layers. Because these seed layers can compromise device performance, seed layer-free terbium iron garnet (TIG) has also recently been developed. Careful doping of TIG can produce Faraday rotations with opposite chiralities, which enable new device designs. Most optical isolator designs involve two-dimensional transverse magnetic-mode structures, such as interferometers or ring resonators, which employ nonreciprocal phase shift. One-dimensional Faraday rotation waveguides with quasi-phase matching have been shown to enable direct integration of isolators for all modes, including the transverse electric mode of lasers currently available for fully integrated PICs
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