Genetic Algorithms (GAs) are direct searching methods which require little information from design space. This characteristic beside robustness of these algorithms makes them to be very popular in recent decades. On the other hand, while this method is employed, there is no guarantee to achieve optimum results. This obliged designer to run such algorithms more than one time to achieve more reli...

In independent component analysis problems, when we use a one-unit objective function to iteratively estimate several independent components, the uncorrelatedness between the independent components prevents them from converging to the same optimum. A simple and popular way of achieving decorrelation between recovered independent components is a deflation scheme based on a Gram-Schmidt-like deco...

A novel technique for obtaining a single-layer single-feed dual frequency rectangular microstrip antenna with protruding semi ellipse for s-band communication is proposed and demonstrated. By protruding semi ellipse of appropriate dimension close to one of the edge, the rectangular patch has been shown to realize dual-frequency broadside radiations. This dual frequency operation increases its a...

Nowadays new peer to peer (P2P) traffic with dynamic port and encrypted technology makes the identification of P2P traffic become more and more difficult. As one of the optimal classifiers, support vector machine (SVM) has special advantages with avoiding local optimum, overcoming dimension disaster, resolving small samples and high dimension for P2P classification problems. However, to employ ...

In this report, we investigate the influences of the small gap in whispering-gallery modes on energy coupling, resonance quality and frequency. Photon tunneling between an optical resonator and its light-delivery coupler depends strongly on the gap dimension which can vary from zero to size of an optical wavelength involved. An optimal gap dimension is found to exist for maximum energy coupling...

New emerging space-time processing technologies promise a significant performance increase of wireless communication systems. The particular application and scenario strongly influences the amount of possible performance and capacity increase if antenna arrays are deployed at the basestation (BS) and/or at the mobile terminal (MT). The achievable gain is mainly determined by the spatial correla...

We present a new technique for the embedding of large cube-connected cycles networks (CCC) into smaller ones, a problem that arises when algorithms designed for an architecture of an ideal size are to be executed on an existing architecture of a xed size. Using the new embedding strategy, we show that the CCC of dimension l can be embedded into the CCC of dimension k with dilation 1 and optimum...

Data analysis is critical to many (if not a ll) Homeland Security missions. Data to be fielded in this domain is typically immense in cardinality (number of records) and immense in dimensionality (features per record). Random Projections (RP) have been proposed as an effective technique for embedding a metric space of dimension d into one of dimension k while retaining bounds on the distortion ...

Cardiac arrhythmia refers to any abnormal electrical activity in the heart that causes irregular heartbeat. Under clinical settings, the arrhythmias can be monitored non-invasively using the electrocardiogram (ECG). Although reliable, the method is still prone to error due to its dependence on visual interpretation. Further, ECG data is enormous in dimension and increases as the data sampling r...

In conventional partially adaptive linearly constrained minimum variance (LCMV) beamformer design the approach has been to represent the noise subspace with some reduced set of vectors, typically the eigenvectors associated with the largest eigenvalues of the noise covariance matrix. This, whilst yielding good performance, will not give the optimum performance for a given partially adaptive dim...