Transitions in Human Health: Surviving This Millennium by Learning from the Past One Hundred Millennia

We have been living through several decades of great and rapid changes in the human condition. Life expectancies increased markedly during the twentieth century; populations are becoming 'older'; disease profiles are changing. The world is connecting up economically and electronically, market forces have become increasingly dominant, the post-Cold War political landscape has been transformed, cities are expanding rapidly, and material wealth is accruing — albeit unevenly. Meanwhile, however, a range of large-scale environmental changes is occurring, of which the most apparent is global climate change. This reflects a more fundamental process: the biosphere and its life-support systems are straining under the weight of human numbers, intensified food production, escalating carbon-based energy use and the spread of mass consumption behaviours. This revised version was published online in September 2006 with corrections to the Cover Date.     

Lake Missoula and the Scablands,Washington, USA

Gigantic floods that, for just a few days, had flow rates many times greater than the combined flows of all the other rivers of the world put together. Sounds ridiculous, and it's almost inconceivable, but it's real, and it all happened at the end of the last Ice Age. The water came from Lake Missoula, which exists no more, but the effects are still to be seen in the landscapes, most notably in the vast scablands of eastern Washington.     

All jobs are not created equal: Divergent indicators in the knowledge economy

Univariate indicators such as employment are often used to benchmark economic growth at the local and regional levels. However, the tremendous technological and industrial changes in the U.S. economy in the second half of the twentieth century suggest this practice may be outdated. In fact, the singular use of univariate indicators to benchmark regional development may obscure a much richer and more complex web of economic processes. Given the potential complexities associated with regional benchmarking in the current global economy, this paper will explore the numerical differences in economic performance presented by popular univariate indicators of regional growth. Results demonstrate a univariate approach to benchmarking presents an incomplete snapshot of regional performance that is incapable of capturing the multifaceted nature of economic growth in today’s global knowledge economy. Although job creation remains an important component to development efforts, many other factors should be considered in evaluations of regional performance, including the industries in which jobs are created and their associated wages.     

Identifying irregularly shaped crime hot-spots using a multiobjective evolutionary algorithm

Spatial cluster detection techniques are widely used in criminology, geography, epidemiology, and other fields. In particular, spatial scan statistics are popular and efficient techniques for detecting areas of elevated crime or disease events. The majority of spatial scan approaches attempt to delineate geographic zones by evaluating the significance of clusters using likelihood ratio statistics tested with the Poisson distribution. While this can be effective, many scan statistics give preference to circular clusters, diminishing their ability to identify elongated and/or irregular shaped clusters. Although adjusting the shape of the scan window can mitigate some of these problems, both the significance of irregular clusters and their spatial structure must be accounted for in a meaningful way. This paper utilizes a multiobjective evolutionary algorithm to find clusters with maximum significance while quantitatively tracking their geographic structure. Crime data for the city of Cincinnati are utilized to demonstrate the advantages of the new approach and highlight its benefits versus more traditional scan statistics.     

Sinking cities

When water supplies are abstracted from alluvial sands, interbedded clays compact and cause ground subsidence. Entire cities are being gently lowered, with serious consequences for those on low coastal sites.     

IGS Near Real-Time Products and Their Applications

The primary IGS products, including precise GPS orbits, Earth orientation parameters, and estimated and predicted GPS satellite clocks, are no longer used exclusively for essential geodetic support of scientic research. They are increasingly being used by a wide range of non-academic applications. In these applications, timeliness is extremely critical. To address the timeliness issue, the strengths and weaknesses of current IGS production processes are discussed, new ways to improve the timeliness and quality are explored, and recommendations are proposed to fulfill the application requirements. ? 2001 John Wiley & Sons, Inc.