The footprints remaining following somatic P-element excision from the Drosophila white locus were recovered and characterized. Two different types of footprints were observed. Over 75% of the footprints were short, composed of 4 or 7 nucleotides of the P-element inverted terminal repeat, and were similar to those found in a previously described plasmid excision assay. The remaining footprints ...

Footprints are the most direct source of evidence about locomotor biomechanics in extinct vertebrates. One of the principal suppositions underpinning biomechanical inferences is that footprint geometry correlates with dynamic foot pressure, which, in turn, is linked with overall limb motion of the trackmaker. In this study, we perform the first quantitative test of this long-standing assumption...

BACKGROUND Because of the high concentration of oil refining and petrochemical facilities, the industrial area of the lower Mississippi River of South Louisiana has been termed the Industrial Corridor and has frequently been referred to as the "Cancer Corridor". AIMS To quantitatively assess the "Cancer Corridor" controversy based on mortality data available in the public domain, and to ident...

The establishment of corridors can offset the negative effects of habitat fragmentation by connecting isolated habitat patches. However, the practical value of corridor planning is minimal if corridor identification is not based on reliable quantitative information about species-environment relationships. An example of this need for quantitative information is planning for giant panda conservat...

Articles 7 What Makes an Early Adopter? Transforming Landscapes One Farmer at a Time by Alicia Calle, MESc 2008 15 Ignorance or Exclusion? Forest Knowledge and Social Hierarchies in Community-Level Conservation in the Petén, Guatemala by Micha Rahder, MESc 2008 21 Conservation in Flux: Pursuing Social Resilience in Mozambique and Peru by James Leslie, joint MESc-MBA 2008 28 Understanding Stakeh...

A meaningful environmental impact analysis should go beyond the accounting of pressures from resource use and actually assess how resource demand affects ecosystems. The various currently available footprints of nations report the environmental pressures e.g. water use or pollutant emissions, driven by consumption. However, there have been limited attempts to assess the environmental consequenc...

At lunchtime it’s crucial for people to get to the food trucks as quickly as possible. The building is represented by a graph G = (V,E) where each room, landing, or other location is represented by a vertex and each corridor or stairway is represented by an edge. Each corridor has associated capacity c, meaning that at most c people can pass through the corridor at once. Traversing a corridor f...

Wireless sensor networks are expected to play an essential role as a social infrastructure to realize our safe and secure living environment. In such a network, critical information must be transmitted faster and more reliably than other information. We propose a distributed transmission mechanism which enables emergency packets to be carried with high reliability and low latency along a prefer...