For any nation, education and research is an important factor in development of a country and society. Education is necessary for everyone for his/her social, mental and overall development. In this process also our governments are operating many campaigns for better education to every child of the nation. So in any education institute, teachers are the main functioning body and results of students are affected by the performance of teachers. These days it is major problem to select the best teacher for any institute. Today, in this century of digital and competitive world, apart from good...

We have difficulties to remember long cryptographic keys, and when we encrypt our data, cryptographic keys are provided by a third party, so it can be shared to a hacker. Therefore to solve this problem, for a long time period researchers have been discovering new ways to use biometric features of the user, which are memorable and totally independent from any third party cryptographic key provider. The effort to produce tough and unique cryptographic keys, and to organize the key, is unpredictable to a hacker who is deficient of valued knowledge about the user biometrics. In this paper, we...

System reliability modeling in terms of fuzzy set theory is basically utilizing the type-2 fuzzy sets, where the fuzzy membership is assumed as point-wise positive function ranging on [0,1]. Such a practice might not be practical because an interval valued membership may reflect the vagueness of system better according to human thinking patterns. The Grey fuzzy set is more capable to handle the uncertainty of system using type-2 fuzzy set.