نتایج جستجو برای: selection indices
تعداد نتایج: 397767 فیلتر نتایج به سال:
SUMMARY Economic selection indices were derived for terminal sire h breeds or strains, using physical and financial results from ee~ealand export lamb-producing flocks.
We consider the problem of finding an optimal set of indices for a file. A general model for a file is assumed together with a probabilistic model of the transactions conducted with it: Queries, Updates, Insertions and Deletions. I t is shown that all the information assumed for each attribute can be condensed into two parameters and that properties of the optimal solution can be derived from t...
Selection of efficient indices is very important for detecting and measuring random, uniform and clumped distribution patterns of plants in different plant communities. To compare and evaluate indices of dispersion patterns of plants, three stands were selected in Nodushan, Yazd. A (50m*100m) area was selected within each stand for sampling. Sampling was randomly systematicly conducted. Measure...
maize improvement for high temperature tolerance requires the reliable assessment of parental inbred lines and their combinations. fifteen maize inbred lines were evaluated during 2007 and 2008 in shushtar city (khuzestan province). the inbred lines were planted at two dates: 6 july, to coincide heat stress with pollination time; and 27 july, as normal planting to avoid high temperature during ...
Until recently the Consumer Price Index consisted solely of “matched model” component indices. The latter are constructed by BLS personnel who visit stores and compare prices of goods with the same set of characteristics over successive periods. This procedure is subject to a selection bias. Goods that were not on the shelves in the second period were discarded and hence never contributed price...
Supplier selection is a major strategy for manufacture to run the production process smoothly. Supplier categorization, selection and performance evaluation are decisions of strategic importance to companies. Global competition, mass customization, high customer expectations and harsh economic conditions are forcing companies to rely on external suppliers to contribute a larger portion of parts...
Saccharum spontaneum is the major donor of important traits like vigour, hardiness and ratooning potential to modern sugarcane cultivars. Identifying S. clones with high early vigour tillering ability essential include them in hybridization program. Forty three accessions were evaluated for number tillers per clump, stalk length, diameter, leaves on main stem, leaf leng...
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