3,032 research outputs found
Thermodynamic Interpretation of Field Equations at Horizon of BTZ Black Hole
A spacetime horizon comprising with a black hole singularity acts like a
boundary of a thermal system associated with the notions of temperature and
entropy. In case of static metric of BTZ black hole, the field equations near
horizon boundary can be expressed as a thermal identity ,
where is the mass of BTZ black hole, is the change in the area of
the black hole horizon when the horizon is displaced infinitesimally small,
is the radial pressure provided by the source of Einstein equations,
is the entropy and is the Hawking temperature
associated with the horizon. This approach is studied further to generalize it
for non-static BTZ black hole and show that it is also possible to interpret
the field equation near horizon as a thermodynamic identity , where is the angular velocity and is the
angular momentum of BTZ black hole. These results indicate that the field
equations for BTZ black hole possess intrinsic thermodynamic properties near
horizon.Comment: 8 page
An Integrated Software-based Solution for Modular and Self-independent Networked Robot
An integrated software-based solution for a modular and self-independent
networked robot is introduced. The wirelessly operatable robot has been
developed mainly for autonomous monitoring works with full control over web.
The integrated software solution covers three components : a) the digital
signal processing unit for data retrieval and monitoring system; b) the
externally executable codes for control system; and c) the web programming for
interfacing the end-users with the robot. It is argued that this integrated
software-based approach is crucial to realize a flexible, modular and low
development cost mobile monitoring apparatus.Comment: 9 pages, Proceeding of the 10th International Conference on Control,
Automation, Robotics and Visio
Exhaustive Search-based Model for Hybrid Sensor Network
A new model for a cluster of hybrid sensors network with multi sub-clusters
is proposed. The model is in particular relevant to the early warning system in
a large scale monitoring system in, for example, a nuclear power plant. It
mainly addresses to a safety critical system which requires real-time processes
with high accuracy. The mathematical model is based on the extended
conventional search algorithm with certain interactions among the nearest
neighborhood of sensors. It is argued that the model could realize a highly
accurate decision support system with less number of parameters. A case of one
dimensional interaction function is discussed, and a simple algorithm for the
model is also given.Comment: 6 pages, Proceeding of the International Conference on Intelligent &
Advanced Systems 2012 pp. 557-56
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