Vision: The World through Picket Fences

Book Reviews: Black Picket Fences, and Voices from Beneath the Veil

Fences catch free-ranging lipids

surface is crisscrossed with picket fences made of immobile transmembrane proteins. Until now, single-particle tracking (SPT) has been too slow to provide a high-resolution view of lipid diffusion. In an impressive technical achievement, the authors developed a SPT technique with 25s resolution, and then used it to follow the diffusion of a nonraft lipid in a cell membrane. The lipid molecule w...

Making straps from small movements

surface is crisscrossed with picket fences made of immobile transmembrane proteins. Until now, single-particle tracking (SPT) has been too slow to provide a high-resolution view of lipid diffusion. In an impressive technical achievement, the authors developed a SPT technique with 25s resolution, and then used it to follow the diffusion of a nonraft lipid in a cell membrane. The lipid molecule w...

Mobile Robot Sonar Backscatter Algorithm for Automatically Distinguishing Walls, Fences, and Hedges

We present an algorithm to distinguish several types of brick walls, picket fences, and hedges based on the analysis of backscattered sonar echoes. The echo data are acquired by a mobile robot with a single-transducer 50 kHz pulse-echo sonar computer-controlled scanning system packaged as its sensor head. For several locations along a wall, fence, or hedge, a fan of backscatter sonar echoes is ...

Good Fences Make Good Neighbors: Evidence on the Effects of Property Rights

This paper uses the introduction of barbed wire fences to the American Midwest in the late 19th century to estimate the effects of property rights on farmers’ production decisions. Farmers were both formally and informally required to build fences to secure exclusive land-use rights, yet preferred wooden fences had been prohibitively expensive in areas with little woodland. The introduction and...