Results 1 - 10 of 14,896

Multidimensional Access Methods

by Volker Gaede, Oliver Günther , 1998
"... Search operations in databases require special support at the physical level. This is true for conventional databases as well as spatial databases, where typical search operations include the point query (find all objects that contain a given search point) and the region query (find all objects that ..."
Abstract - Cited by 686 (3 self) - Add to MetaCart
Search operations in databases require special support at the physical level. This is true for conventional databases as well as spatial databases, where typical search operations include the point query (find all objects that contain a given search point) and the region query (find all objects

Image Inpainting

by Marcelo Bertalmio, Guillermo Sapiro , 2000
"... Inpainting, the technique of modifying an image in an undetectable form, is as ancient as art itself. The goals and applications of inpainting are numerous, from the restoration of damaged paintings and photographs to the removal/replacement of selected objects. In this paper, we introduce a novel a ..."
Abstract - Cited by 531 (25 self) - Add to MetaCart
algorithm for digital inpainting of still images that attempts to replicate the basic techniques used by professional restorators. After the user selects the regions to be restored, the algorithm automatically fills-in these regions with information surrounding them. The fill-in is done in such a way

Reliable Multicast Transport Protocol (RMTP)

by Sanjoy Paul, Krishan K. Sabnani, John C. Lin, Supratik Bhattacharyya
"... This paper presents the design, implementation and performance of a reliable multicast transport protocol called RMTP. RMTP is based on a hierarchical structure in which receivers are grouped into local regions or domains and in each domain there is a special receiver called a Designated Receiver (D ..."
Abstract - Cited by 654 (10 self) - Add to MetaCart
This paper presents the design, implementation and performance of a reliable multicast transport protocol called RMTP. RMTP is based on a hierarchical structure in which receivers are grouped into local regions or domains and in each domain there is a special receiver called a Designated Receiver

An integrated theory of the mind

by John R. Anderson, Daniel Bothell, Michael D. Byrne, Scott Douglass, Christian Lebiere, Yulin Qin - PSYCHOLOGICAL REVIEW , 2004
"... There has been a proliferation of proposed mental modules in an attempt to account for different cognitive functions but so far there has been no successful account of their integration. ACT-R (Anderson & Lebiere, 1998) has evolved into a theory that consists of multiple modules but also explain ..."
Abstract - Cited by 780 (73 self) - Add to MetaCart
explains how they are integrated to produce coherent cognition. The perceptual-motor modules, the goal module, and the declarative memory module are presented as examples of specialized systems in ACT-R. These modules are associated with distinct cortical regions. These modules place chunks in buffers

Brain magnetic resonance imaging with contrast dependent on blood oxygenation.

by S Ogawa , T M Lee , A R Kay , D W Tank - Proc. Natl. Acad. Sci. USA , 1990
"... ABSTRACT Paramagnetic deoxyhemoglobin in venous blood is a naturally occurring contrast agent for magnetic resonance imaging (MRI). By accentuating the effects of this agent through the use of gradient-echo techniques in high fields, we demonstrate in vivo images of brain microvasculature with imag ..."
Abstract - Cited by 648 (1 self) - Add to MetaCart
to regional neural activity. Magnetic resonance imaging (MRI) is a widely accepted modality for providing anatomical information. Current research (1) involves extending MRI methods to provide information about biological function, in addition to the concomitant anatomical information. In addition

Meeting of minds: the medial frontal cortex and social cognition.

by David M Amodio , Chris D Frith - Nature Review Neuroscience, , 2006
"... Abstract | Social interaction is a cornerstone of human life, yet the neural mechanisms underlying social cognition are poorly understood. Recently, research that integrates approaches from neuroscience and social psychology has begun to shed light on these processes, and converging evidence from n ..."
Abstract - Cited by 388 (17 self) - Add to MetaCart
neuroimaging studies suggests a unique role for the medial frontal cortex. We review the emerging literature that relates social cognition to the medial frontal cortex and, on the basis of anatomical and functional characteristics of this brain region, propose a theoretical model of medial frontal cortical

The capacity region of the Gaussian multiple-input multiple-output broadcast channel

by Hanan Weingarten, Yossef Steinberg, Shlomo Shamai (Shitz) - IEEE TRANS. INF. THEORY , 2006
"... The Gaussian multiple-input multiple-output (MIMO) broadcast channel (BC) is considered. The dirty-paper coding (DPC) rate region is shown to coincide with the capacity region. To that end, a new notion of an enhanced broadcast channel is introduced and is used jointly with the entropy power inequa ..."
Abstract - Cited by 339 (7 self) - Add to MetaCart
inequality, to show that a superposition of Gaussian codes is optimal for the degraded vector broadcast channel and that DPC is optimal for the nondegraded case. Furthermore, the capacity region is characterized under a wide range of input constraints, accounting, as special cases, for the total power

Capacity Regions for Wireless Ad Hoc Networks

by Stavros Toumpis , Andrea J. Goldsmith - IEEE TRANSACTIONS ON WIRELESS COMMUNICATIONS , 2003
"... We define and study capacity regions for wireless ad hoc networks with an arbitrary number of nodes and topology. These regions describe the set of achievable rate combinations between all source-destination pairs in the network under various transmission strategies, such as variable-rate transmissi ..."
Abstract - Cited by 283 (16 self) - Add to MetaCart
We define and study capacity regions for wireless ad hoc networks with an arbitrary number of nodes and topology. These regions describe the set of achievable rate combinations between all source-destination pairs in the network under various transmission strategies, such as variable

Industrial development in cities

by Vernon Henderson, Ari Kuncoro, Matt Turner - Journal of Political Economy , 1995
"... This paper uses data for eight manufacturing industries in 1970 and 1987 to test for and characterize dynamic production externalities in cities. We find evidence of both MAR externalities, which are associ-ated with past own industry employment concentration, and Jacobs externalities, which are ass ..."
Abstract - Cited by 302 (10 self) - Add to MetaCart
with notions of urban specialization and product cycles: new industries prosper in large, diverse metropolitan areas, but with maturity, production de-centralizes to smaller, more specialized cities. For mature industries, there is also a high degree of persistence in individual employment patterns across

Activation of the middle fusiform ‘face area’ increases with expertise in recognizing novel objects,

by Isabel Gauthier , Michael J Tarr , Adam W Anderson , Pawel Skudlarski , John C Gore - Nature Neuroscience , 1999
"... 568 nature neuroscience • volume 2 no 6 • june 1999 articles Evidence for specialization in the fusiform gyrus for human face perception comes from both neuroimaging and neuropsychological studies Subjects were trained with novel objects called greebles 14 RESULTS We localized the brain areas mor ..."
Abstract - Cited by 264 (20 self) - Add to MetaCart
568 nature neuroscience • volume 2 no 6 • june 1999 articles Evidence for specialization in the fusiform gyrus for human face perception comes from both neuroimaging and neuropsychological studies Subjects were trained with novel objects called greebles 14 RESULTS We localized the brain areas
Results 1 - 10 of 14,896