Fluxes of water and carbon dioxide from short-rotation Salix viminalis L. were measured at leaf, tree and stand scales using porometer, chamber and micrometeorological techniques, respectively. At all three scales, instantaneous water use efficiency exhibited a similar dependence on vapor pressure deficit (deltae) with values of 21, 13 and 10 g CO(2) per kg H(2)O for deltae of 0.5, 1.0 and 1.5 ...

wood ducks that winter extensively in southern bottoms, nest throughout much of forested North America. And probably more importantly than use by individual animals, broad-scale landscape habitat conditions affect wildlife community composition and population function of species. For example, very small pockets of forest habitat may serve as sinks for forest interior birds, where mortality exce...

We investigate the nature of charge transport in deoxyribonucleic acid (DNA) using self-assembled layers of DNA in large-area molecular junctions. A protocol was developed that yields dense monolayers where the DNA molecules are not standing upright, but are lying flat on the substrate. As a result the charge transport is measured not along the DNA molecules but in the transverse direction, acr...

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The partitioning of production forests into discretely managed forest stands confronts animals with diversity in forest attributes at scales from point-level tree assemblages to distinct forest patches and range-level forest cover. We have investigated the movement and ranging patterns of male Common Chaffinches, Fringilla coelebs, in heterogeneous forest production landscapes during spring and...

In this paper, we propose a hierarchical reinforcement learning method which enables a learner to learn tasks in a highdimensional state space. In the upper level, the learner coarsely explores the low-dimensional state space. In the lower level, the learner nely explores the high-dimensional state space. Speci cally, the learner learns to set up appropriate subgoals for the task in the upper l...

Humans are capable of pointing to a target with accuracy. However, when vision is distorted through a visual rotation or mirror-reversed vision, the performance is initially degraded and thereafter improves with practice. There are suggestions this gradual improvement results from a sensorimotor recalibration involving initial gating of the somatosensory information from the pointing hand. In t...

Stand Your Ground Laws and Homicides The controversies surrounding Stand Your Ground laws have recently captured the nation’s attention. Since 2005, eighteen states have passed laws extending the right to self-defense with no duty to retreat to any place a person has a legal right to be, and several additional states are debating the adoption of similar legislation. Despite the implications tha...

Forest ecosystem management, based partly on a greater understanding of natural disturbance regimes, has many variations but is generally considered the most promising approach to accommodating biodiversity concerns in managed forested regions. Using the Lake Duparquet Forest in the southeastern Canadian boreal forest as an example, we demonstrate an approach that attempts to integrate forest a...