This work investigates the use of orientation features, computed using the Hough transform, as a criterion for image similarity evaluation in content based picture retrieval. The context of this work is the management of thematic catalogues, in which the coherence in the meaning of the image contents can be relied upon to a certain degree. The vector space model, a well-assessed technique in te...

Abstract An 81-years-old with a history of hypertension, dyslipidemia, and chronic ischemic heart disease prior stent implantation right coronary artery in 2011. Due to its poor compliance, no recurrent symptoms, and, finally, the COVID-19 pandemic, patient did not perform any cardiological follow-up during these years. Unfortunately, last six months he has reported onset dyspnea typical angina...

This paper describes the geometric properties required to form the walls of a functional scroll compressor, and a practical design procedure that has been used at the University of Maryland to generate more general scroll geometries and model their performance. It presents several examples of this technique, showing how it can be used to meet practical design challenges, optimize operating para...

Let A be an appropriate planar domain and let f be a piecewise smooth function on R2. We discuss the rate of convergence of S f(x) = Z A b f( ) exp(2 i x)d in terms of the interaction between the geometry of A and the geometry of the singularities of f . The most subtle case is when x belongs to the singular set of f and here Hilbert transform techniques play an important role. The pointwise co...

An environment plays an important role in behaviors acquisition for artificial creatures. Thus, the environment must obey the physical laws. In this paper, it is examined how the behavior differences appear when the artificial creature autonomously behaves in some fluid environments. We construct the approximate virtual fluid environment with low computing costs to simulate the behavior acquisi...