CC-MRSJ:CACHE CONSCIOUS STAR JOIN ALGORITHM ON HADOOP PLATFORM

CC-MRSJ:Cache Conscious Star Join Algorithm on Hadoop Platform

A cache-conscious MapReduce star join algorithm was presented,each column of fact table was separately stored,and dimension table was divided into several Sounding column families according to dimension hierarchy.Fact table foreign key column and corresponding dimension table was co-location storage,thus reducing data movement in the join process.C

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Experimental Study on the Force-Bearing Performance of Masonry Structures with a Marble-Graphite Slide Seismic Isolator at the Foundation

As part of the search for a seismic isolator for low-rise buildings, this paper proposes a marble-graphite slide seismic isolation system composed of marble-graphite slides, an upper foundation beam, the Rattan Bedframe lower counterpart of the upper beam, and the corresponding stop blocks, with the stop blocks consisting of restrictive screws, pos

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Stepwise participation of HGF/MET signaling in the development of migratory muscle precursors during vertebrate evolution

Abstract Background The skeletal musculature of gnathostomes, which is derived from embryonic somites, consists of epaxial and hypaxial portions.Some hypaxial muscles, such as tongue and limb muscles, undergo de-epithelialization and migration during development.Delamination and migration of these myoblasts, or migratory muscle precursors (MMPs), i

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Neither Scale of Response Nor Threshold in Habitat Availability Is Conserved Across Species of Forest-Dwelling Songbirds Responding to Habitat Loss

Thresholds can be an effective tool in conservation planning, as they can form a defensible target for habitat conservation or restoration.Generalized thresholds must be used with caution, however, as threshold responses may vary with species and spatial scale.The objectives of this study were to identify the scales at which forest-dwelling birds r

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Agroforestry systems and understory harvest management: the impact on growth and productivity of dual-purpose wheat

Abstract: The objective of the study was to evaluate the growth and production efficiency of forage-grain dual-purpose wheat in two arrangements and four agroforestry systems (Intercrop-I and Intercrop-II), as well as to evaluate crop management for the wheat crops in Cereal two planting seasons (Crop Season I-2014 and Crop Season II-2015.The exper

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