Suitability of FRIs based on Generalised Operators

It is well known that a t-norm T and its residual implication I T , normally denoted as the residual pair ( T;I T ), play an important role in fuzzy inference systems, especially in Fuzzy Relational Inference (FRI) mechanisms. For instance, many desirable properties like the inter- polativity, continuity, robustness and monotonicity of an FRI largely depend on the properties possesed by the residual pair ( T;I T )

Bandler–Kohout Subproduct With Yager’s Classes of Fuzzy Implications

The Bandler-Kohout subproduct (BKS) inference mechanism is one of the two established fuzzy relational inference (FRI) mechanisms; the other one being Zadeh's compositional rule of inference (CRI). Both these FRIs are known to possess many desirable properties. It can be seen that many of these desirable properties are due to the rich underlying structure, viz., the residuated algebra, from which the employed operations come. In this study, we discuss the BKS relational inference system, with the fuzzy implication interpreted as Yager's classes of implications, which do not form a residuated structure on [0,1] . We show that many of the desirable properties, viz., interpolativity, continuity, robustness, which are known for the BKS with residuated implications, are also available under this framework, thus expanding the choice of operations available to practitioners. Note that, to the best of the authors' knowledge, this is the first attempt at studying the suitability of an FRI where the operations come from a nonresiduated structure

Some experience in the production of high silicon Fe-Mn at TISCO Joda Plant

The paper describes the experience gained over the last few years in the production of Silico manganese at Ferro Manganese Plant, Joda. The quality of the quartzite is a very important factor governing the level of silicon in the alloys. An alloy of 16% silicon could be produced successfully with 96% SiO2 in the quartzite. Trials in the production of the alloy and the improvement effected of its grade has also been discussed

Curvelet and Ridgelet-based Multimodal Biometric Recognition System using Weighted Similarity Approach

Biometric security artifacts for establishing the identity of a person with high confidence have evoked enormous interest in security and access control applications for the past few years. Biometric systems based solely on unimodal biometrics often suffer from problems such as noise, intra-class variations and spoof attacks. This paper presents a novel multimodal biometric recognition system by integrating three biometric traits namely iris, fingerprint and face using weighted similarity approach. In this work, the multi-resolution features are extracted independently from query images using curvelet and ridgelet transforms, and are then compared to the enrolled templates stored in the database containing features of each biometric trait. The final decision is made by normalizing the feature vectors, assigning different weights to the modalities and fusing the computed scores using score combination techniques. This system is tested with the public unimodal databases such as CASIA–Iris-V3-Interval, FVC2004, ORL and self-built multimodal databases. Experimental results obtained shows that the designed system achieves an excellent recognition rate of 98.75 per cent and 100 per cent for the public and self-built databases respectively and provides ultra high security than unimodal biometric systems.Defence Science Journal, 2014, 64(2), pp. 106-114. DOI: http://dx.doi.org/10.14429/dsj.64.346

Raman and high-pressure photoluminescence studies on porous silicon

We show that there is no correlation between the blue shift of the visible photoluminescence band and red shift of the Raman phonon line in porous silicon, in contrast to the recently reported results. We also report a drastic red shift of the photoluminescence peak position with pressure up to 6 GPa and show that this is much larger than that of the crystalline silicon. These observations cast doubt on the suggested mechanism of quantum size effects in porous silicon

Thermomechanical effect in cholesteric liquid crystals

We discuss some possible experimental geometries for studying Leslie's thermomechanical effect in cholesteric liquid crystals. The discussion includes the effect of a temperature gradient (i) along and (ii) perpendicular to the helical axis. The feasibility of observing the effect and of extracting the thermomechanical coefficients is examined