About the cover: confocal microscopy picture illustrating the neurons of the medial prefron-tal cortex (in red) and the innervation by cells that produce acetylcholine (green). e main question that is dealt with in this thesis is how acetylcholine that is released in the mPFC aects processing in the circuits of the mPFC. Note that a very small population of mPFC neurons is capable of producing ...

www.sciencemag.org SCIENCE VOL 326 23 OCTOBER 2009 493 COVER A three-color mosaic derived from the Moon Mineralogy Mapper (M) near-infrared spectrometer. Orange and pink colors illustrate the distribution of iron-bearing minerals. Green represents the surface brightness at 2.4 micrometers. Blue indicates the presence of small amounts of surficial OH and H 2 O that are most prominent at these vi...

In cooperative games, a key question is to find a division of payoffs to coalition members in a fair manner. Nucleolus is one of such solution concepts that provides a stable solution for the grand coalition. We study the computation of the nucleolus of a number of cooperative games, including fractional matching games and fractional edge cover games on general weighted graphs, as well as verte...

The Radioactive Waste Safety Standards (RADWASS) programme follows the hierarchical categorization scheme used in the publications of IAEA Safety Series, as shown below: Safety Fundamentals (silver cover) Basic objectives, concepts and principles to ensure safety. Safety Standards (red cover) Basic requirements which must be satisfied to ensure safety for particular activities or applications a...

The Radioactive Waste Safety Standards (RADWASS) programme follows the hierarchical categorization scheme used in the publications of IAEA Safety Series, as shown below: Safety Fundamentals (silver cover) Basic objectives, concepts and principles to ensure safety. Safety Standards (red cover) Basic requirements which must be satisfied to ensure safety for particular activities or applications a...

Motivated by the need for succinct representations of all “small” transversals (or hitting sets) of a hypergraph of fixed rank, we study the complexity of computing such a representation. Next, the existence of a minimal hitting set of at least a given size arises as a subproblem. We give one algorithm for hypergraphs of any fixed rank, and we largely improve an earlier algorithm (by H. Fernau,...

Article history: Received 21 October 2013 Received in revised form 30 September 2014 Accepted 21 October 2014 Available online 28 October 2014 Communicated by G. Ausiello

Oliverian Magma Series gneisses (442–454 Ma) in the cores of domes in southwestern New Hampshire have an igneous mineralogy that crystallized at pressures (P) of 9–11 kbar and temperatures (T) of 650–775 °C, whereas the cover (Ammonoosuc Volcanics) has the same formation age (453 ± 2 Ma) yet is clearly extrusive. A significant crustal section, ~30 km thick, must have originally separated the tw...

This study examines landscape changes in the context of China's national Grain for Green (GFG) policy, one of the world's largest "payment for environmental/ecosystem services" (PES) programs. We explored landscape structures and dynamics between 2000 and 2010 in Shaanxi Province, the Chinese province with the greatest amount of cropland conversion and reforestation in recent decades. We used L...

The main objective of this study was to develop a nondestructive method for monitoring cotton growth and N status using a digital camera. Digital images were taken of the cotton canopies between emergence and full bloom. The green and red values were extracted from the digital images and then used to calculate canopy cover. The values of canopy cover were closely correlated with the normalized ...