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An integrative approach to online conference review management : a thesis submitted in partial fulfilment of the requirements for the degree of Master of Science in Information System in Massey University
Academic conferences play an important role in modern science and technology development. They provide venues for people involved in particular research areas to communicate with each other, share research achievement, and understand the current leading edge of development in that area. They also provide opportunity to periodically summarise the past work and find new directions for future research. The peer reviewed conference papers become reference for other researchers. There are thousands of conferences organised all over the world every year. For each conference there are hundreds of paper submissions. The management of submission, review and selection process is a hard and tedious task for conference committees. This thesis discusses the design and implementation of a web-based application to facilitate an efficient and effective management of paper submission, review and selection process in academic conferences.[FROM INTRODUCTION
Effects of dark energy on the efficiency of charged AdS black holes as heat engine
In this paper, we study the heat engine where charged AdS black holes
surrounded by dark energy is the working substance and the mechanical work is
done via term in the first law of black hole thermodynamics in the
extended phase space. We first investigate the effects of a kind of dark energy
(quintessence field in this paper) on the efficiency of the RN-AdS black holes
as heat engine defined as a rectangle closed path in the plane. We get
the exact efficiency formula and find that quintessence field can improve the
heat engine efficiency which will increase as the field density grows.
At some fixed parameters, we find that bigger volume difference between the
smaller black holes() and the bigger black holes( ) will lead to a
lower efficiency, while the bigger pressure difference will make the
efficiency higher but it is always smaller than 1 and will never be beyond
Carnot efficiency which is the maximum value of the efficiency constrained by
thermodynamics laws, this is consistent to the heat engine in traditional
thermodynamics. After making some special choices for thermodynamical
quantities, we find that the increase of electric charge and normalization
factor can also promote heat engine efficiency which would infinitely
approach the Carnot limit when or goes to infinity.Comment: 28 pages, 16 figures, refernces added, discussion and computation
improve
Note on the Radion Effective Potential in the Presence of Branes
In String Theory compactification, branes are often invoked to get the
desired form of the radion effective potential. Current popular way of doing
this assumes that the introduction of branes will not modify the background
geometry in an important way. In this paper, we show by an explicit example
that at least in the codimension 2 case, the gravitational backreaction of the
brane cannot be neglected in deriving the radion effective potential. Actually,
in this case, the presence of branes will have no effect on the dynamics of
radion.Comment: 6 pages, no figures. Some discussion clarified, conclusion unchanged.
To appear in Phys. Rev.
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