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Asociația Ad Astra a anunțat câștigătorii Premiilor Ad Astra 2022: http://premii.ad-astra.ro/. Proiectul și-a propus identificarea și popularizarea modelelor de succes, a rezultatelor excepționale ale cercetătorilor români din țară și din afara ei.
Publicatii proprii
The Biometric Menagerie – A Fuzzy and Inconsistent Concep
This paper proves that in iris recognition, the concepts of sheep, goats, lambs and wolves - as proposed by Doddington and Yager in the socalled Biometric Menagerie, are at most fuzzy and at least not quite well defined. They depend not only on the users or on their biometric templates, but also on the parameters that calibrate the iris recognition system. This paper shows that, in the case of iris recognition, the extensions of these concepts have
Read moreExamples of Artificial Perceptions in Optical Character Recognition and Iris Recognition
This chapter assumes the hypothesis that human learning is perception based, and consequently, the learning process and perceptions should not be represented and investigated independently or modeled in different simulation spaces. In order to keep the analogy between the artificial and human learning, the former is assumed here as being based on the artificial perception. Hence, instead of choosing to apply or develop a Computational Theory of (human)
Read moreDesigning and continuous extrusion forming of Al-Mg-Si contact lines for electric railway
The experimental work aimed to obtaining the aluminum alloy contact lines for trams or light rail. For this purpose was elaborated AlMgSi0.5 Aluminum alloy was elaborated and semi-continuous casted into rods of f 175 x 6000 mm, and then homogenized (520° C / for 16 hours) for the continuous extrusion process. A chamber extrusion die was designed and executed. After continuous extrusion forming, the obtained contact wire has been heat treated (quenching
Read moreA novel exploratory chemometric approach to environmental monitorring by combining block clustering with Partial Least Square (PLS) analysis
Given the serious threats posed to terrestrial ecosystems by industrial contamination, environmental monitoring is a standard procedure used for assessing the current status of an environment or trends in environmental parameters. Measurement of metal concentrations at different trophic levels followed by their statistical analysis using exploratory multivariate methods can provide meaningful information on the status of environmental quality. In
Read moreHow Does Earth Maintain the Stability of its Rotation Motion?: An Irreversible Thermodynamics Approach
This paper proposes to provide a physical description of how the Earth achieves the stability of its rotation motion. We demonstrate that Earth is a self-organizing system due to its complexity levels, which are structured according to the ergodic theorem. As a self-organizing system the Earth generates all the negative feedbacks necessary to reach the near to equilibrium state. We focus on the Earth's rotation as this can be more easily perturbed
Read moreMonitoring of volatile organic compounds using a single tin dioxide sensor
The paper describes a new and simple method for monitoring volatile organic compounds resulting from a specific industrial indoor process. The method is based on the characteristic of tin dioxide sensors to be sensitive and non-selective to a large variety of gases. We use these characteristics to determine an equivalent concentration of the volatile organic compound mixture, a method which has not been used in other studies or experiments. The value
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