42,822 research outputs found
Functional imaging: is the resting brain resting?
It is often assumed that the human brain only becomes active to support
overt behaviour. A new study challenges this concept by showing that
multiple neural circuits are engaged even at rest. We highlight two
complementary hypotheses which seek to explain the function of this
resting activity
Strong singularity for subalgebras of finite factors
In this paper we develop the theory of strongly singular subalgebras of von
Neumann algebras, begun in earlier work. We mainly examine the situation of
type \tto factors arising from countable discrete groups. We give simple
criteria for strong singularity, and use them to construct strongly singular
subalgebras. We particularly focus on groups which act on geometric objects,
where the underlying geometry leads to strong singularity
Research study on materials processing in space experiment M512
A study program was conducted to clarify the role of gravity in the fluid mechanics of certain molten metal processes of potential significance to manufacturing in space. In particular, analyses were conducted of the M551 Metals Melting Experiment and the M553 Sphere Forming Experiment to be conducted in the M512 Facility onboard Skylab. The M551 experiment consisted of a study of electron beam welding of various metals, and the M553 experiment studied the formation of molten metal spheres by free-floating in a near zero-gravity environment. The analyses of these experiments and a comparison with ground-based and KC135 experimental results are presented
Research study on materials processing in space experiment M512
A study program was conducted to clarify the role of gravity in the fluid mechanics of certain molten metal processes of potential significance to manufacturing in space. In particular, analyses were conducted of the M551 Metals Melting Experiment and the M553 Sphere Forming Experiment to be conducted in the M512 Facility onboard Skylab. The M551 experiment consisted of a study of electron beam welding of various metals, and the M553 experiment studied the formation of molten metal spheres by free-floating in a near zero-gravity environment. The analyses of these experiments and a comparison with ground-based and KC135 experimental results are presented
Synchronizing Sequencing Software to a Live Drummer
Copyright 2013 Massachusetts Institute of Technology. MIT allows authors to archive published versions of their articles after an embargo period. The article is available at
Organic slug control using Phasmarhabditis hermaphrodita
Phasmarhabditis hermaphrodita is a lethal slug parasitic nematode that has been formulated into an effective biological control agent called Nemaslug®. We investigated the possibility of using different application methods of P. hermaphrodita to reduce cost and the number of nematodes applied. We also compared P. hermaphrodita with a new slug pellet called Ferramol®, which is available for use on organic farms
Gaps in Health Insurance: Why So Many Americans Experience Breaks in Coverage and How the Affordable Care Act Will Help
Presents findings from the Health Insurance Tracking Survey of U.S. Adults, including the percentage of those who were uninsured during 2011, reasons for gaps in coverage, access to regular and preventive care, and the impact of federal healthcare reform
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Crystallization of calcite from amorphous calcium carbonate: earthworms show the way
No abstract available
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