information, while Google Earth and other virtual globes are encouraging volunteers to develop interesting applications using their own data. I review this phenomenon, and examine associated issues: what drives people to do this, how accurate are the results, will they threaten individual privacy, and how can

JSTOR, please contact support@jstor.org. economic history. The form of this generalization is a set of stages of growth, which can be designated as follows: the traditional society; the preconditions for take-off; the take-off; the drive to maturity; the age of high mass consumption. Beyond the age

, to compute importance proposal probabilities, which eectively drive the Markov chain dynamics and achieve tremendous speedup in comparison to traditional jump-diffusion method[4]. Thus DDMCMC paradigm provides a unifying framework where the role of existing segmentation algorithms, such as, edge detection

The success of the Linux operating system has demonstrated the viability of an alternative form of software development – open source software – that challenges traditional assumptions about software markets. Understanding what drives open source developers to participate in open source projects

-tics such as elasticity, friction, mass, and moment of inertia to produce rolling and sliding contacts. If a set of bodies is statically unstable, the system dynamically drives it toward a stable configuration while obeying the geometric con-straints of the system including general non-holonomic con-stralnts. The system

, applications, and computing devices move. The location of users and devices drives applications and resource management. Users have anytime/anywhere access to information, the network, and computational resources. Within this world, applications that make effective use of resources to support the activities

Traditionally, Cognitive Load Theory (CLT) has focused on instructional methods to decrease extraneous cognitive load so that available cognitive re-sources can be fully devoted to learning. This article strengthens the cognitive base of CLT by linking cognitive processes to the processes used

Today’s mobile, wireless, and ad-hoc communications often exhibit extreme characteristics challenging assumptions underlying the traditional way of end-toend communication protocol design in the Internet. One specific scenario is Internet access from moving vehicles on the road as we

are often very efficient, the tools for experimenting with real robots are often inadequate. The traditional programming languages and tools seldom provide enought support for realtime experiments, thus hindering the understanding of the control algorithms and making the experimentation complex and time

Abstract. The increasing popularity of power constrained mobile computers and embedded computing applications drives the need for analyzing and optimizing power in all the components of a system. Software constitutes a major component of today's systems, and its role is projected togrow even