this paper addresses the signal processing principles in passive bistatic radar (pbr) systems. in this case, the detection problem in the presence of system noise, clutter/multipath, direct signal and interfering target signals is investigated. to this light, two types of detectors are studied. in the first one, which is based on intuitive sense, we examine two detectors. in the second type det...

whereas there is an exact linear relation between the wiener indices of kenograms and plerograms of isomeric alkanes, the respective terminal wiener indices exhibit a completely different behavior: correlation between terminal wiener indices of kenograms and plerograms is absent, but other regularities can be envisaged. in this article, we analyze the basic properties of terminal wiener indices...

Recently, D. Vukičević and J. Sedlar in [1] introduced an order “⪯” on Tn, the set of trees n vertices, such that topological index F a graph is function defined 〈Tn,⪯〉. It provides new approach to determine extremal graphs with respect F. By using method they determined common maximum and/or minimum Tn indices Wiener type anti-Wiener type. Motivated by their researches we further study 〈Tn,⪯〉 ...

This paper extends the generalized Wiener–Wintner Theorem built by Host and Kra to multilinear case under hypothesis of pointwise convergence ergodic averages. In particular, we have following result:Let $ (X, {\mathcal B}, \mu, T) be a measure preserving system. Let b two distinct non-zero integers. Then for any f_{1}, f_{2}\in L^{\infty}(\mu) $, there exists full subset X(f_{1}, f_{2}) X such...

in this paper, a new molecular-structure descriptor, the general sum–connectivity co–index  is considered, which generalizes the first zagreb co–index and the general sum–connectivity index of graph theory. we mainly explore the lower and upper bounds in termsof the order and size for this new invariant. additionally, the nordhaus–gaddum–type resultis also represented.

in this paper we introduce the concept of generalized baer-invariant of a pair of groups with respect to two varieties ? and ? of groups. we give some inequalities for the generalized baer-invariant of a pair of finite groups, when ? is considered to be the schur-baer variety. further, we present a sufficient condition under which the order of the generalized baer-invariant of a pair of finite ...