In this paper various layered planar periodic structures which provide miniaturization of planar antennas are proposed and discussed. The proposed designs are based on two concepts, reactive impedance surfaces and complementary periodic structures. In the proposed structures, complementary periodic rings and slots are patterned on the intermediate boundaries of the dielectric layers. A patch an...

In this work is presented a general architecture for a multi physical agent network system based on the coordination and the behaviour management. The system is organised in a hierarchical structure where are distinguished the individual agent actions and the collective ones linked to the whole agent network. Individual actions are also organised in a hybrid layered system that take advantages ...

This work involves the development of a layered, heterogeneous architecture for cognitive robotics that can be used to connect a knowledge representation (KR) system to Pyro (Python robotics). We have focused on connecting a Semantic Network Processing System (SNePS) (Shapiro & Rapaport 1992) agent to a Pyro robot, however, the framework we have developed, snarpy (an architecture linking SNePS ...

Windows CE 3.0, also known as Pocket PC for palm-sized devices, is becoming increasingly popular among professionals and corporate enterprises. It is estimated that by 2004 Windows CE will have a share of 40% of the marketplace for palm-sized devices. The documented vulnerabilities against a major competitor of WinCE, Palm, and the proliferation of palm-sized devices highlight the need for secu...

Digital libraries have great potential to improve the educational experience. There are a wide variety of such repositories, especially those that focus specifically on education. However, a survey of existing work shows relatively few that have both a narrow subject focus and ample affordances for content browsing. We present our prototype design and implementation for the HumanCentered Comput...

In this paper, numerical analysis of a pile-soil interaction problem is presented considering the parameters influencing the axial load-deformation behavior of the pile embedded in a layered soil medium. The analysis is demonstrated with parametric solutions of a pile with underlain model soil strata under the axial force. An attempt is made to ascertain the extent of influence of elastic prope...