10,439 research outputs found
Book Review: \u3ci\u3eKį¹į¹£į¹a and Christ: Body-Divine Relation in the Thought of Åaį¹ kara, RÄmÄnuja, and Classical Christian Orthodoxy\u3c/i\u3e
Book review of Kį¹į¹£į¹a and Christ: Body-Divine Relation in the Thought of Åaį¹
kara, RÄmÄnuja, and Classical Christian Orthodoxy. By Steven Tsoukalas. Eugene, OR: WIPF & STOCK, 2011, 310 pages
Book Review: \u3cem\u3eChrist and Krishna: Where the Jordan Meets the Ganges\u3c/em\u3e
A review of Christ and Krishna: Where the Jordan Meets the Ganges by Steven J. Rosen
Book Review: \u3ci\u3eCaste, Gender, and Christianity in Colonial India: Telugu Women in Mission\u3c/i\u3e
Book review of Caste, Gender, and Christianity in Colonial India: Telugu Women in Mission. By James Elisha Taneti. New York: Palgrave Macmillan, 2013, 203 pages
Hybrid SGP4 orbit propagator
Two-Line Elements (TLEs) continue to be the sole public source of orbiter
observations. The accuracy of TLE propagations through the Simplified General
Perturbations-4 (SGP4) software decreases dramatically as the propagation
horizon increases, and thus the period of validity of TLEs is very limited. As
a result, TLEs are gradually becoming insufficient for the growing demands of
Space Situational Awareness (SSA). We propose a technique, based on the hybrid
propagation methodology, aimed at extending TLE validity with minimal changes
to the current TLE-SGP4 system in a non-intrusive way. It requires that the
institution in possession of the osculating elements distributes hybrid TLEs,
HTLEs, which encapsulate the standard TLE and the model of its propagation
error. The validity extension can be accomplished when the end user processes
HTLEs through the hybrid SGP4 propagator, HSGP4, which comprises the standard
SGP4 and an error corrector.Comment: 18 pages, 4 figure
A Parallel Branch and Bound Algorithm for the Maximum Labelled Clique Problem
The maximum labelled clique problem is a variant of the maximum clique
problem where edges in the graph are given labels, and we are not allowed to
use more than a certain number of distinct labels in a solution. We introduce a
new branch-and-bound algorithm for the problem, and explain how it may be
parallelised. We evaluate an implementation on a set of benchmark instances,
and show that it is consistently faster than previously published results,
sometimes by four or five orders of magnitude.Comment: Author-final version. Accepted to Optimization Letter
The feasibility of capturing learner interactions based on logs informed by eye-tracking and remote observation studies
Two small studies, one an eye-tracking study and the other a remote observation study, have been conducted to investigate ways to identify two kinds of online learner interactions: users flicking through the web pages in "browsing" action, and users engaging with the content of a page in "learning" action. The video data from four participants of the two small studies using the OpenLearn open educational resource materials offers some evidence for differentiating between 'browsing' and 'learning'. Further analysis of the data has considered possible ways of identifying similar browsing and learning actions based on automatic user logs. This research provides a specification for researching the pedagogical value of capturing and transforming logs of user interactions into external forms of representations. The paper examines the feasibility and challenge of capturing learner interactions giving examples of external representations such as sequence flow charts, timelines, and table of logs. The objective users information these represent offer potential for understanding user interactions both to aid design and improve feedback means that they should be given greater consideration alongside other more subjective ways to research user experience
Modulation of Kekul\'e adatom ordering due to strain in graphene
Intervalley scattering of carriers in graphene at `top' adatoms may give rise
to a hidden Kekul\'e ordering pattern in the adatom positions. This ordering is
the result of a rapid modulation in the electron-mediated interaction between
adatoms at the wavevector , which has been shown experimentally and
theoretically to dominate their spatial distribution. Here we show that the
adatom interaction is extremely sensitive to strain in the supporting graphene,
which leads to a characteristic spatial modulation of the Kekul\'e order as a
function of adatom distance. Our results suggest that the spatial distributions
of adatoms could provide a way to measure the type and magnitude of strain in
graphene and the associated pseudogauge field with high accuracy.Comment: 9 pages, 7 figure
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