Combining hierarchical coding of data with receiver-driven control appears to be an attractive scheme for the multicast transmission of audio/video flows in a heterogeneous multicast environment such as the Internet. However, little experimental data is available regarding the actual performance

an attractive compromise between information content and repeatability, and encompass a wide variety of local shape structures. We also define a translation and scale invariant descriptor encoding the geometric configuration of the segments within a kAS, making kAS easy to reuse in other frameworks, for example

The growth of the Internet raises new challenges for the design of distributed systems and applications. In the context of group communication protocols, gossip-based schemes have attracted interest as they are scalable, easy to deploy, and resilient to network and process failures. However

In this paper, several computational schemes are presented for the optimal tuning of the global behavior of nonlinear dynamical sys-tems. Specifically, the maximization of the size of domains of attraction associated with invariants in parametrized dynamical sys-tems is addressed. Cell Mapping (CM

for the agents. These control laws are a combination of attractive/repulsive and alignment forces, ensuring collision avoidance and cohesion of the group and an aggregate motion along a common heading direction. In this control scheme the topology of the control interconnections is fixed and time invariant

Several randomizod path planners have been proposed during the last few years. Their attractiveness stems from their applicability to virtually any type of robots, and their empirically observed success. In this paper we attempt to present a unifying view of these planners and to theoretically

proposed in the last ten years [BGW88, BT94, CCD88, CFSY96, Cha88, FOO92, GMW87, Ive92, JSI96, Oka96, SK94, SK95], and recently receipt-free voting schemes are attracting many researchers [BT94, JSI96, Oka96, SK95]. The receipt-free property means that voting system generates no receipt (evidence) of whom

variations of this method are presented, illustrating the feasibility of this approach. 1. Introduction One of the attractive features of an evolutionary algorithm (EA) is that it quickly concentrates effort in promising areas of a search space. Unfortunately, this feature is not always advantageous

High-level query languages are an attractive interface for sensor networks, potentially relieving application programmers from the burdens of distributed, embedded programming. In research to date, however, the proposed applications of such interfaces have been limited to simple data collection

When we look at images, certain salient structures often attract our immediate attention, without requiring a systematic scan of the entire image. In subsequent stages, processing resources can be allocated preferentially to these salient structures. In many cases this saJiency is a property