42,723 research outputs found
Estimation of Optimized Energy and Latency Constraints for Task Allocation in 3d Network on Chip
In Network on Chip (NoC) rooted system, energy consumption is affected by
task scheduling and allocation schemes which affect the performance of the
system. In this paper we test the pre-existing proposed algorithms and
introduced a new energy skilled algorithm for 3D NoC architecture. An efficient
dynamic and cluster approaches are proposed along with the optimization using
bio-inspired algorithm. The proposed algorithm has been implemented and
evaluated on randomly generated benchmark and real life application such as
MMS, Telecom and VOPD. The algorithm has also been tested with the E3S
benchmark and has been compared with the existing mapping algorithm spiral and
crinkle and has shown better reduction in the communication energy consumption
and shows improvement in the performance of the system. On performing
experimental analysis of proposed algorithm results shows that average
reduction in energy consumption is 49%, reduction in communication cost is 48%
and average latency is 34%. Cluster based approach is mapped onto NoC using
Dynamic Diagonal Mapping (DDMap), Crinkle and Spiral algorithms and found DDmap
provides improved result. On analysis and comparison of mapping of cluster
using DDmap approach the average energy reduction is 14% and 9% with crinkle
and spiral.Comment: 20 Pages,17 Figure, International Journal of Computer Science &
Information Technology. arXiv admin note: substantial text overlap with
arXiv:1404.251
Energy and Latency Aware Application Mapping Algorithm & Optimization for Homogeneous 3D Network on Chip
Energy efficiency is one of the most critical issue in design of System on
Chip. In Network On Chip (NoC) based system, energy consumption is influenced
dramatically by mapping of Intellectual Property (IP) which affect the
performance of the system. In this paper we test the antecedently extant
proposed algorithms and introduced a new energy proficient algorithm stand for
3D NoC architecture. In addition a hybrid method has also been implemented
using bioinspired optimization (particle swarm optimization) technique. The
proposed algorithm has been implemented and evaluated on randomly generated
benchmark and real life application such as MMS, Telecom and VOPD. The
algorithm has also been tested with the E3S benchmark and has been compared
with the existing algorithm (spiral and crinkle) and has shown better reduction
in the communication energy consumption and shows improvement in the
performance of the system. Comparing our work with spiral and crinkle,
experimental result shows that the average reduction in communication energy
consumption is 19% with spiral and 17% with crinkle mapping algorithms, while
reduction in communication cost is 24% and 21% whereas reduction in latency is
of 24% and 22% with spiral and crinkle. Optimizing our work and the existing
methods using bio-inspired technique and having the comparison among them an
average energy reduction is found to be of 18% and 24%.Comment: 15 pages, 11 figure, CCSEA 201
Spectral domain ghost imaging
In the last few years,the field of ghost imaging has seen many new
developments. From computational ghost imaging to 3D ghost imaging, this field
has shown many interesting applications. But the method of obtaining an image
in ghost imaging experiments still requires data to be recorded over long
duration of time due to averaging over many shots of data. We propose a method
to get the intensity correlated images in one shot by averaging over different
wavelength components rather than different time components
A Nonparametric Bayesian Method for Clustering of High-Dimensional Mixed Dataset
The paper is motivated from clustering problem in high-throughput mixed
datasets. Clustering of such datasets can provide much insight into biological
associations. An open problem in this context is to simultaneously cluster
high-dimensional mixed dataset. This paper fills that gap and proposes a
nonparametric Bayesian method called Gen-VariScan for biclustering of
high-dimensional mixed dataset.
Gen-VariScan utilizes Generalized Linear Models (GLM), and latent variable
approaches to integrate mixed dataset. We make use of Poisson Dirichlet Process
(PDP) to identify a lower dimensional structure of mixed covariates. We show
that covariate co-cluster detection is aposteriori consistent, as the number of
subject and covariates grows. The advantage of Gen-VariScan is also
demonstrated through numerical simulation and data analysis. As a byproduct, we
derive a working value approach to perform beta regression. Supplementary
materials for this article are available online
Statistical Analysis of Privacy and Anonymity Guarantees in Randomized Security Protocol Implementations
Security protocols often use randomization to achieve probabilistic
non-determinism. This non-determinism, in turn, is used in obfuscating the
dependence of observable values on secret data. Since the correctness of
security protocols is very important, formal analysis of security protocols has
been widely studied in literature. Randomized security protocols have also been
analyzed using formal techniques such as process-calculi and probabilistic
model checking. In this paper, we consider the problem of validating
implementations of randomized protocols. Unlike previous approaches which treat
the protocol as a white-box, our approach tries to verify an implementation
provided as a black box. Our goal is to infer the secrecy guarantees provided
by a security protocol through statistical techniques. We learn the
probabilistic dependency of the observable outputs on secret inputs using
Bayesian network. This is then used to approximate the leakage of secret. In
order to evaluate the accuracy of our statistical approach, we compare our
technique with the probabilistic model checking technique on two examples:
crowds protocol and dining crypotgrapher's protocol
Unitarity Constraints on non-minimal Universal Extra Dimensional Model
We examine the unitarity constraints in gauge and scalar sectors of
non-minimal Universal Extra Dimensional model. We show that some of the
tree-level two-body scattering amplitudes in gauge and scalar sectors do not
respect partial wave unitarity. Unitarity analysis of this model leads to an
upper bound on corresponding boundary-localized (BLT) parameter which depends
on the maximum number of Kaluza-Klein (KK) mode considered in the analysis.
This upper bound of the relevant BLT parameter decreases with the increasing
KK-modes. The results are, in effect, independent of the inverse of
compactifiaction radius. The upper bound on BLT parameter also results in a
lower bound on gauge and scalar KK-masses.Comment: 40 pages, 11 figures and 3 tables; added new discussions and figures;
typos fixed; references added; matches published versio
A closed form for the generalized Bernoulli polynomials via Fa\`a di Bruno's formula
We derive a closed form for the generalized Bernoulli polynomial of order
in terms of Bell polynomials and Stirling numbers of the second kind using the
Fa\`a di Bruno's formula.Comment: 4 pages; No figure
`' and chiral dynamics
The role of light scalar meson `' is investigated in nuclear
matter in an Effective chiral model in the mean-field approach. For the
purpose, we scan the properties of the matter at various saturation densities
imposing constraint such as the vacuum value of the pion decay constant
. With a simple approach, the bound on the mass of
the scalar meson is calculated and found in the range . Further, the present analysis show that nuclear matter favor high nucleon
effective mass and dominant repulsive forces at high density, the insight and
the implications of which are discussed.Comment: 8 pages, 5 Figure
Using Quantum Coherence to Enhance Gain in Atomic Physics
Quantum coherence and interference effects in atomic and molecular physics
has been extensively studied due to intriguing counterintuitive physics and
potential important applications. Here we present one such application of using
quantum coherence to generate and enhance gain in extreme
ultra-violet(XUV)(@58.4nm in Helium) and infra-red(@794.76nm in Rubidium)
regime of electromagnetic radiation. We show that using moderate external
coherent drive, a substantial enhancement in the energy of the lasing pulse can
be achieved under optimal conditions. We also discuss the role of coherence.
The present paper is intended to be pedagogical on this subject of
coherence-enhanced lasing.Comment: 16 pages, 16 figures. Review Articl
Numerical Simulation guided Lazy Abstraction Refinement for Nonlinear Hybrid Automata
This draft suggests a new counterexample guided abstraction refinement
(CEGAR) framework that uses the combination of numerical simulation for
nonlinear differential equations with linear programming for linear hybrid
automata (LHA) to perform reachability analysis on nonlinear hybrid automata. A
notion of structural robustness is also introduced which allows the
algorithm to validate counterexamples using numerical simulations.
Keywords: verification, model checking, hybrid systems, hybrid automata,
robustness, robust hybrid systems, numerical simulation, cegar, abstraction
refinement.Comment: 11 pages, 2 figure
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