Pattern Recognition is one of the very important and actively searched trait or branch of artificial intelligence. It is the science which tries to make machines as intelligent as human to recognize patterns and classify them into desired categories in a simple and reliable way. This review paper introduces the basic concepts of pattern recognition, the underlying system architecture and provid...

If Aq(β, α, k) is the scattering amplitude, corresponding to a potential q ∈ L 2(D), where D ⊂ R3 is a bounded domain, and eikα·x is the incident plane wave, then we call the radiation pattern the function A(β) := Aq(β, α, k), where the unit vector α, the incident direction, is fixed, and k > 0, the wavenumber, is fixed. It is shown that any function f(β) ∈ L2(S2), where S2 is the unit sphere i...

In this paper, we have addressed three major problems of uniform linear array in case of a sensor failure at any position. We assume that sensor position is known. The problems include increase in sidelobe levels, displacement of nulls and diminishing of null depth. The desired null depth is achieved by making the weight of symmetrical counterpart element passive. Genetic algorithm (GA) along w...

Giving a good presentation is not easy. It takes a lot of discipline and creativity to prepare and give a presentation that, on the one hand, is received positively by its audience and, on the other hand, has the effects desired by the presenter. This paper gives a handful of recommendations that aid in creating a good presentation. These recommendations are put in pattern form and combined int...

Conventional methods that emerged from microelectronics are now used for fabrication of labon-a-chip devices for applications in chemical and biological studies. Sample localization and arraying within these devices are desired for high throughput screening applications. We developed a novel optical addressing scheme in an electrochemical system to localize polymer beads (0.8-10 μm in diameter)...

We introduce the problem of active pointillistic pattern search (APPS), which seeks to discover regions of a domain exhibiting desired behavior with limited observations. Unusually, the patterns we consider are defined by large-scale properties of an underlying function that we can only observe at a limited number of points. Given a description of the desired patterns (in the form of a classifi...

It is well known that the superposition of two identical random dot patterns may give rise to a particular form of moiré effect known as a Glass pattern. Surprisingly, new research results show that if one chooses appropriate dot shapes for each of the two random dot patterns, while keeping the random dot locations in both layers identical, it is possible to synthesize in the superposition a Gl...

In this paper, large-signal intermodulation distortion (IMD) sweet spots in microwave power amplifiers are studied and predicted using a new mathematical basis. The variations in the IMD versus drive pattern with active bias point and the terminating matching networks are investigated. This nonlinear distortion model enabled the design of power amplifiers specially tailored to present a desired...

A recipe is given for creating material with a desired refraction coefficient by embedding many small particles in a given material. To implement this recipe practically, some technological problems have to be solved. These problems are formulated. PACS 43.20.+g, 62.40.+d, 78.20.-e. MSC 35J10, 74J25, 81U40

A method is given for creating material with a desired refraction coefficient. The method consists of embedding into a material with known refraction coefficient many small particles of size a. The number of particles per unit volume around any point is prescribed, the distance between neighboring particles is O(a 2−κ 3 ) as a → 0, 0 < κ < 1 is a fixed parameter. The total number of the embedde...