Results 1 - 10 of 69,463

On kinetic waves: II) A theory of traffic Flow on long crowded roads

by M. J. Lighthill, G. B. Whitham - Proc. Royal Society A229 , 1955
"... This paper uses the method of kinematic waves, developed in part I, but may be read independently. A functional relationship between flow and concentration for traffic on crowded arterial roads has been postulated for some time, and has experimental backing (? 2). From this a theory of the propagati ..."
Abstract - Cited by 496 (2 self) - Add to MetaCart
of the propagation of changes in traffic distribution along these roads may be deduced (??2, 3). The theory is applied (?4) to the problem of estimating how a 'hump', or region of increased concentration, will move along a crowded main road. It is suggested that it will move slightly slower than the mean

Global analyses of sea surface temperature, sea ice, and night marine air temperature since the late Nineteenth Century

by N. A. Rayner, D. E. Parker, E. B. Horton, C. K. Folland, L. V. Alexander, D. P. Rowell, E. C. Kent, A. Kaplan - J. GEOPHYSICAL RESEARCH , 2003
"... ... data set, HadISST1, and the nighttime marine air temperature (NMAT) data set, HadMAT1. HadISST1 replaces the global sea ice and sea surface temperature (GISST) data sets and is a unique combination of monthly globally complete fields of SST and sea ice concentration on a 1 ° latitude-longitude g ..."
Abstract - Cited by 539 (4 self) - Add to MetaCart
... data set, HadISST1, and the nighttime marine air temperature (NMAT) data set, HadMAT1. HadISST1 replaces the global sea ice and sea surface temperature (GISST) data sets and is a unique combination of monthly globally complete fields of SST and sea ice concentration on a 1 ° latitude

Social change and crime rate trends: a routine activity approach

by Lawrence E Cohen, Marcus Felson - American Sociological Review , 1979
"... In this paper we present a "routine activity approach " for analyzing crime rate trends and cycles. Rather than emphasizing the characteristics of offenders, with this approach we concentrate upon the circumstances in which they carry out predatory criminal acts. Most criminal acts require ..."
Abstract - Cited by 680 (5 self) - Add to MetaCart
In this paper we present a "routine activity approach " for analyzing crime rate trends and cycles. Rather than emphasizing the characteristics of offenders, with this approach we concentrate upon the circumstances in which they carry out predatory criminal acts. Most criminal acts

Distributed hierarchical processing in the primate cerebral cortex

by Daniel J. Felleman, David C. Van Essen - Cereb Cortex , 1991
"... In recent years, many new cortical areas have been identified in the macaque monkey. The number of identified connections between areas has increased even more dramatically. We report here on (1) a summary of the layout of cortical areas associated with vision and with other modalities, (2) a comput ..."
Abstract - Cited by 928 (6 self) - Add to MetaCart
In recent years, many new cortical areas have been identified in the macaque monkey. The number of identified connections between areas has increased even more dramatically. We report here on (1) a summary of the layout of cortical areas associated with vision and with other modalities, (2) a

Aging: a theory based on free radical and radiation chemistry

by Denham Harman, Ph. D - J Gerontol , 1956
"... The phenomenon of growth, decline and death-aging-has been the source of consider-able speculation (1, 8, 10). This cycle seems to be a more or less direct function of the meta-bolic rate and this in turn depends on the species (animal or plant) on which are super-imposed the factors of heredity and ..."
Abstract - Cited by 637 (2 self) - Add to MetaCart
systems. In the first place, free radicals are present in living cells; this was recently demonstrated in vivo by a paramagnetic resonance absorption method (3). Further, it was shown that the concentra-tion of free radicals increased with increasing metabolic activity in conformity with the postu

Semantic matching of web services capabilities

by Massimo Paolucci, Takahiro Kawamura, Terry R. Payne, Katia Sycara , 2002
"... Abstract. The Web is moving from being a collection of pages toward a collection of services that interoperate through the Internet. The first step toward this interoperation is the location of other services that can help toward the solution of a problem. In this paper we claim that location of web ..."
Abstract - Cited by 581 (24 self) - Add to MetaCart
on the market is expected to create great value added and increase productivity. On the other hand, automatic management of supply chain opens new challenges: first, web services should locate other services that provide a solution to their problems, second, services should interoperate to compose complex

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
the vessel wall. This increase in the number of spins affected by deoxyhemoglobin is a form of amplification. When the susceptibility-induced local field differences exist within an imaging voxel, there is a resultant distribution of shifts in water resonance frequencies. In the gradient-echo method, a phase

Increased Concentrations of Antibody-Bound

by Circulatory Cell-free Dna In, Rheumatoid Arthritis, Paul Hasler
"... have been found in several disorders and have been interpreted as evidence of increased rates of cell death or turnover. Evidence from in vitro and animal experi-ments suggests that DNA may play a role in the patho-genesis of rheumatoid arthritis (RA). Methods: We measured cell-free DNA in plasma an ..."
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have been found in several disorders and have been interpreted as evidence of increased rates of cell death or turnover. Evidence from in vitro and animal experi-ments suggests that DNA may play a role in the patho-genesis of rheumatoid arthritis (RA). Methods: We measured cell-free DNA in plasma

INCREASING CONCENTRATION IN EUROPEAN BANKING:

by De Nederlandsche Bank, D. Jansen, J. De Haan, De Nederlandsche, Bank Nv, D. Jansen, J. De Haan , 2003
"... a macro-level analysis ..."
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a macro-level analysis

The Ferric Reducing Ability of Plasma (FRAP) as a measure of antioxidant power: The FRAP assay.

by Iris F F Benzie , J J Strain - Anal. Biochem., , 1996
"... destroy potential oxidants, and to scavenge ROS. Thus, A simple, automated test measuring the ferric reduc-oxidative stress-induced tissue damage is minimized. ing ability of plasma, the FRAP assay, is presented as However, an absolute or relative deficiency of antioxia novel method for assessing & ..."
Abstract - Cited by 436 (0 self) - Add to MetaCart
''antioxidant power.'' Fer-dant defenses may lead to a situation of increased oxiric to ferrous ion reduction at low pH causes a colored dative stress, and this may be associated with both ferrous-tripyridyltriazine complex to form. FRAP val-the causes and consequences of a variety
Results 1 - 10 of 69,463