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In this paper, an inverse model for applications in sea ice parameter estimation is investigated. The algorithm utilizes a forward model based on Radiative Transfer theory and Dense Medium and Amplitude Correction Theory (DMPACT), together with a global optimizer known as Simulated Annealing. The purpose of the forward model is to calculate the radar backscatter data from a set of input parameters...
In this paper, a forward and inverse modelling approach for application in sea ice physical parameter retrieval is proposed. The algorithm is a combination of a forward model based on Radiative Transfer theory and a global optimizer known as Simulated Annealing. In the model, the forward model provides the estimation of the radar backscatter data from a set of input parameters. The accuracy of the...
This paper presents the application of an Ant Colony Optimization (ACO) algorithm approach for communications networks design problem. We explore the use of ACO’s for solving a network optimization problem, the degree-constrained minimum spanning tree problem (d-MST), which is a NP-Hard problem. The effectiveness of the proposed algorithm is demonstrated through two kinds of data set: structured hard...
Several different switching paradigms have been devised to transfer data over Wavelength-Division Multiplexing (WDM), such as Optical Circuit Switching (OCS) a wavelength-routed network, Optical Packet Switching (OPS), and Optical Burst Switching (OBS). Given that any optical switching strategy is mainly shaped by the advances in the optical technology, the optical communications systems must provide...
This paper summarizes the study of dense medium scattering and its applications towards sea ice research in Ross Island, Antarctica. Based on the Radiative Transfer Theory and earlier work by Tjuatja and Fung, an improvement to the phase matrix to account for the near field effects of electrically dense media was developed, called the Dense Medium Phase and Amplitude Correction Theory (DM-PACT). An...
This paper presents local ordinal measures for iris recognition. It is inspired by the mechanism of response properties in neuroscience. The ordinal relationships can preserve the stability among a group of neighboring regions against noise in a given iris image. In this scheme, the iris texture is represented by a set of similarities and dissimilarities across neighboring regions. The experiment...
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