منابع مشابه
Shrinking a carbon nanotube.
We report a method to controllably alter the diameter of an individual carbon nanotube. The combination of defect formation via electron irradiation and simultaneous resistive heating and electromigration in vacuum causes the nanotube to continuously transform into a high-quality nanotube of successively smaller diameter, as observed by transmission electron microscopy. The process can be halte...
متن کاملThe (a, b)-Shrinking Generator
A new construction of a pseudorandom generator based on a simple combination of two LFSRs is introduced. This construction allows users to generate a large family of sequences using the same initial states and the same characteristic feedback polynomials of the two combined LFSRs. The construction is related to the so-called shrinking generator that is a special case of this construction. The c...
متن کاملInnovation in a Shrinking World
This paper explores the implications of reductions in tariffs or transport costs on the rate of innovation in a quality ladders model where Þrms from both countries innovate. If a country raises its tariffs, its wage rises relative to the other country and its Þrms become technology leaders for a larger fraction of products, but the aggregate rate of innovation falls. If transport costs fall sy...
متن کاملBoundary Surface Shrinking { a Continuous
We present a new algorithm for eecient and robust approximation of skeletons and construction of connected center line graphs from 3D image data. The algorithm is based on the idea of shrinking the boundary surface along the gradients of the object's distance map. After transforming the surface in that way, duplicate ver-tices and line segments are eliminated. If the skeleton contains no medial...
متن کاملShrinking spines
Text by Hema Bashyam [email protected] Skin-based immunity W hen skin cells are hit by a blast of UV light, they instruct dendritic cells (DCs) to suppress immunity system-wide, say Karin Loser, Stefan Beissert (University of Münster, Münster, Germany), and colleagues. UV has the unusual ability to cause immunosuppression by recruiting T regulatory cells (T regs). UV has thus been used t...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: British Journalism Review
سال: 1994
ISSN: 0956-4748,1741-2668
DOI: 10.1177/095647489400500101