The Global Sweep of Pollution: Satellite Snapshots Capture Long-Distance Movement

The Global Sweep of Pollution: Satellite Snapshots Capture Long-Distance Movement

A Satellite View of Pollution on the Ground: Long-Term Changes in Global Nitrogen Dioxide

From monitoring harmful algal blooms to predicting the spread of infectious diseases, recent advances in satellite-based remote sensing have been a boon to environmental health science. In particular, the capacity to assess air quality from space is built on decades of work now beginning to pay dividends. This issue of EHP includes the first global estimate of long-term changes in ground-level ...

Long-distance Movement of a Pinniped Neonate

Understanding long-distance dispersal patterns for wide-ranging species is critical to developing effective conservation strategies (Lockwood et al. 2002, Shanks et al. 2003, Gerber et al. 2005, Figueira and Crowder 2006). California sea lions (Zalophus californianus) in the Gulf of California (GoC) are thought to include distinct populations based on limited dispersal and resulting genetic pop...

Long-Distance Wh-Movement and Minimalism

1 Introduction Long wh-movement is a phenomenon by which an element appears to move directly from an A-or A-position to a higher A-destination, ignoring weak island constraints and bypassing the intermediate landing sites that are characteristic of successive-cyclic wh-movement. Cinque (1990) gives some examples of the contrast between long and successive-cyclic wh-movements, illustrating the l...

Global Snapshots for Distributed Debugging

The widespread adoption of distributed computing has accentuated the need for an eeective set of support tools. In providing such support, one fundamental problem is that of constructing a global snapshot or global state of a distributed computation. This paper examines global snapshot algorithms from a distributed debugging perspective, and proposes an abstract framework based on global snapsh...