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Optics-less smart sensors and a possible mechanism of cutaneous vision in nature

100%

Yaroslavsky L. , Goerzen C. , Umansky S. , Caulfield H.

Open Physics

2010

tom 8

nr 3

455-462

Although optics-less cutaneous (“skin”) vision is not uncommon among living organisms, its mechanisms and capabilities have not been thoroughly investigated. This paper demonstrates, using methods from statistical parameter estimation theory and numerical simulations, that arrays of bare radiation detectors arranged on a planar or curved surface have the ability to perform imaging tasks without any optics at all. The working principle of this type of optics-less sensors and the model developed here for determining their performance may be used to shed light on possible mechanisms, capabilities and evolution of cutaneous vision in nature.

Heuristic Rating Estimation Approach to The Pairwise Comparisons Method

88%

Kułakowski K.

Fundamenta Informaticae

2014

tom Vol. 133, nr 4

367--386

The Heuristic Ratio Estimation (HRE) approach proposes a new way of using the pairwise comparisons matrix. It allows the assumption that the weights of some alternatives (herein referred to as concepts) are known and fixed, hence the weight vector needs to be estimated only for the other unknown values. The main purpose of this paper is to extend the previously proposed iterative HRE algorithm and present all the heuristics that create a generalized approach. Theoretical considerations are accompanied by a few numerical examples demonstrating how the selected heuristics can be used in practice.