Limit cycles can occur when navigating unmanned ground vehicles (UGVs) using behavior-based algorithms. Limit cycles occur when the robot is navigating towards the goal but enters an enclosure that has its opening in a direction opposite to the goal. The robot then becomes effectively trapped in the enclosure. This paper reports a solution to the limit cycle problem for robot navigation in very...

The objective of this paper is to study scene visibility complexity in flatland, expressed by scene visibility mutual information. To achieve this aim we consider several 2D scenes to try to understand the relationship of the complexity with the number, size, and relative position of the objects within the scene, the form of the enclosure and the number of patches. Particularly, we analyze the ...

The transmission line matrix time domain (TLM-TD) method is used to simulate the electromagnetic pulse (EMP) coupled inside a shielding box with an aperture. Simulations for different electromagnetic pulses regarding to different rise time and fall time have been performed. The results for shielding effectiveness of these different excitations have been presented. A simple method that uses an e...

THE RELATIONSHIP OF SOCIOECONOMIC STATUS, AND ACCULTURATION/ENCULTURATION TO BMI AND PERCEPTIONS OF BODY IMAGE AMONG COLLEGE-AGED AFRICAN AMERICAN WOMEN The purpose of this study was to examine the relationship of SES and acculturation/enculturation to body image perceptions and overweight (i.e. BMI) among African American college women. A secondary purpose was to examine which factors predicte...

Aperture coupling is the main coupling mode through which electromagnetic pulse (EMP), ultra wideband (UWB) and high power microwave (HPM) can disturb or damage electronic equipments of the missile enclosure. To get knowledge of the coupling effects of apertures with different shapes and positions, coupling processes of HPM into the missile enclosure are investigated. The simulation results ind...

Clean air in the operating room is important during joint replacement surgery. We compared monochromatic ultraviolet radiation of254 nm with the use ofa Charnley-Howorth air enclosure by bacterial air-sampling during 113 total hip arthroplasties. Air samples were taken continuously at the edge of the wound and every 15 minutes at a site 130 cm from the operating table. We also tested the effect...

Tests for speeding up the determination of the Bernstein enclosure of the range of a multivariate polynomial and a rational function over a box and a simplex are presented. In the polynomial case, this enclosure is the interval spanned by the minimum and the maximum of the Bernstein coe cients which are the coe cients of the polynomial with respect to the tensorial or simplicial Bernstein basis...

Consider linear algebraic systems where the elements of the matrix and the right-hand side vector depend linearly on a number of interval parameters. We prove some sufficient conditions for the united parametric solution set of such a system to have linear boundary. These conditions imply an equivalent representation of the parametric system where each parameter appears once in a diagonal matri...

The body scanning device, used at some airports to view through passenger's clothing to the surface of the skin, is considered to be a major improvement toward ensuring that weapons or explosives are not carried onto commercial aircraft, making airline travel safer, and the nation more secure. In the ten years since September 11, 2001, airport security has become increasingly invasive. Air pass...