Intrusion Detection System is the process of intelligently monitoring events occurring in a computer system or network, analyzing them for signs violations security policy. Its primary aim to protect availability, confidentiality and integrity critical networked information systems. This paper considered reviewed CAPTCHA based intrusion detection model. A method incorporating signature was used...

let $cr_n(f_p)$ denote the algebra of $n times n$ circulant‎ ‎matrices over $f_p$‎, ‎the finite field of order $p$ a prime‎. ‎the‎ ‎order of the unit groups $mathcal{u}(cr_3(f_p))$‎, ‎$mathcal{u}(cr_4(f_p))$ and $mathcal{u}(cr_5(f_p))$ of algebras of‎ ‎circulant matrices over $f_p$ are computed‎.

We consider SU(N) Yang-Mills theory on the space R×S3 with Minkowski signature (−+++). The condition of SO(4)-invariance imposed on gauge fields yields a bosonic matrix model which is a consistent truncation of the plane wave matrix model. For matrices parametrized by a scalar φ, the Yang-Mills equations are reduced to the equation of a particle moving in the double-well potential. The classica...

In this paper we present a new practical key-recovery attack on the SFLASH signature scheme. SFLASH is a derivative of the older C∗ encryption and signature scheme that was broken in 1995 by Patarin. In SFLASH, the public key is truncated, and this simple countermeasure prevents Patarin’s attack. The scheme is well-known for having been considered secure and selected in 2004 by the NESSIE proje...

In many applications, one may need to characterize a given network among a large set of base networks, and these networks are large in size and diverse in structure over the search space. In addition, the characterization algorithms are required to have low volatility and with a small circle of uncertainty. For large datasets, these algorithms are computationally intensive and inefficient. Howe...

We consider the signature reversing transformation of the metric tensor g µν → −g µν induced by the chiral transformation of the curved space gamma matrices γ µ→ γγ µ in spacetimes with signature (S, T), which also induces a (−1) T spacetime orientation reversal. We conclude: (1) It is a symmetry only for chiral theories with S − T = 4k, with k integer. (2) Yang-Mills theories require dimension...

We consider the signature reversing transformation of the metric tensor g µν → −g µν induced by the chiral transformation of the curved space gamma matrices γ µ→ γγ µ in spacetimes with signature (S, T), which also induces a (−1) T spacetime orientation reversal. We conclude: (1) It is a symmetry only for chiral theories with S − T = 4k, with k integer. (2) Yang-Mills theories require dimension...

We consider the signature reversing transformation of the metric tensor g µν → −g µν induced by the chiral transformation of the curved space gamma matrices γ µ→ γγ µ in spacetimes with signature (S, T). We conclude: (1) It is a symmetry only for chiral theories with S − T = 4k, with k integer. (2) Yang-Mills theories require dimensions D = 4k with T even for which even rank antisymmentric tens...

Background Raman spectroscopy is a promising but largely underexplored tool for the detection of phosphates (P) in soil. Although it requires minimal sample preparation, has been demonstrated mainly test matrices or substrates to circumvent typical signal interference caused by fluorescence organic matter actual agricultural soils. Aims The aim this study was highlight spectroscopic and identif...

In this work, we define fuzzy soft ($fs$) matrices and theiroperations which are more functional to make theoretical studies inthe $fs$-set theory. We then define products of $fs$-matrices andstudy their properties. We finally construct a $fs$-$max$-$min$decision making method which can be successfully applied to theproblems that contain uncertainties.