Numerous researchers have proposed the use of robotic aerial explorers to perform scientific investigation of planetary bodies in our solar system. One of the essential tasks for any aerial explorer is to be able to perform scientifically valuable imaging surveys. The focus of this paper is to discuss the challenges implicit in, and recent observations related to, acquiring mission-representative imaging data from a small fixed-wing UAV, acting as a surrogate planetary aerial explorer. This question of successfully performing aerial explorer surveys is also tied to other topics of technical investigation, including the development of unique bio-inspired technologies.

Abstract This paper describes the design and implementation of VNS,a scalable, high-performance, fault-tolerant, parallel name server designed for a NOW environment. It describes thedistinguishing motivations of a name server for NOW environments, gives an overview of the VNS design, and details thecurrent implementation. We conclude with performance measurements suggesting that the VNS design approach embracingbest-effort service, soft state, partitioning, caching, looselyconsistent replication, and simple fault-tolerance schemes is apromising approach for constructing a highly-available name service for clusters that is still scalable and high-performance. 1 Introduction A name service provides a mapping of names to values forclient processes on a network or internetwork. This is a broad role, one which can be filled by many types of systems, in-cluding file systems, WWW servers, and databases, as well as traditional name servers and directory servers. The exactfunctionality needed from a name service depends on the particular needs of a particular set of applications in a particularenvironment. VNS (the "Viral Name Service") is a name service tailored to match the needs of applications executing in aNOW environment. This paper describes the design and implementation of VNS,starting with the needs of applications running on a NOW, and the resulting requirements for a cluster name server. Wecontrast these needs with the requirements for name services for wide area network applications. We then discuss the trade-off along the spectrum of possible solutions for NOW name service, including databases, serverless network file systems,VNS, and network RAM.

Commodity parallel computers are no longer a technology predicted for some indistinct future: they are becoming ubiquitous. In the absence of significant advances in clock speed, chip-multiprocessors (CMPs) and symmetric multithreading (SMT) are the modern workhorses that keep Moore’s Law still

high-level overview of the Division’s activities, including highlights of technical accomplishments during the previous year. Part II (Features) provides further details on eight particular projects of particular note this year. This is followed in Part III (Project Summaries) by brief summaries

.e., the computational results are point estimates based on “deterministic” models with equations containing mean values of material properties and prescribed loadings, we present the FEM solutions of two classical problems as reference benchmarks: (RB-101) The bending of a thin elastic cantilever beam due to a point

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Evolutionary computing (EC) is an exciting development in Computer Science. It amounts to building, applying and studying algorithms based on the Darwinian principles of natural selection. In this paper we briefly introduce the main concepts behind evolutionary computing. We present the main

division-of-labor between semantic and phonological processes. Such a view is consistent with the more general Seidenberg and McClelland framework and has some similarities with---but also important differences from---the standard dual-route account.

The concept of an agent has become important in both Artificial Intelligence (AI) and mainstream computer science. Our aim in this paper is to point the reader at what we perceive to be the most important theoretical and practical issues associated with the design and construction of intelligent

This paper presents a survey of the Voronoi diagram, one of the most fundamental data structures in computational geometry. It demonstrates the importance and usefulness of the Voronoi diagram in a wide variety of fields inside and outside computer science and surveys the history of its development