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Results 31 - 40
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946
Size structure of populations within populations: leaf number and size in crowded and uncrowded Impatiens pMlida individuals
, 1990
"... Summary. We compared the size distributions of leaves on naturally-occurring crowded and experimentally thin-ned "uncrowded " individuals of Impat iens pa l l ida in southeastern Pennsylvania. Crowding decreased the number of leaves on individual plants and altered the distribution of leaf ..."
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Cited by 1 (0 self)
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of leaf size. Crowded individuals had smaller leaves, but the size (length) inequality of the leaf popula-tion did not change. The relationships between the height of a plant and the mean and maximum length of its leaves were significantly different for crowded and uncrowded plants. There were weak
Assessing performance budgeting at OMB: The influence of politics, performance, and program size in FY 2005
- Journal of Public Administration Research and Theory
, 2006
"... This article investigates the impact of performance, as measured by the OMB performance budgeting initiative called Performance Assessment Rating Tool (PART), on recommenda-tions in the President’s budget. In a multivariate analysis using data from the FY 2005 budget, with appropriate controls for t ..."
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Cited by 16 (0 self)
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This article investigates the impact of performance, as measured by the OMB performance budgeting initiative called Performance Assessment Rating Tool (PART), on recommenda-tions in the President’s budget. In a multivariate analysis using data from the FY 2005 budget, with appropriate controls
COMPUTING DIFFERENTIAL SAMPLE SIZE FOR CASE-CONTROL STUDIES OF GENE-ENVIRONMENT INTERACTION
"... vascular disease, and diabetes are known to differ by ethnic/racial groups. However, nei-ther genetic nor environmental factors fully explain the observed differences. Failure to account for genetic expression in the absence or presence of an environmental factor, and vice-versa, may lead to erroneo ..."
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-environment interaction given only the odds ratio for environmental exposure and popula-tion genotype frequency. A table is presented providing sample sizes required for detecting a minimum odds ratio for gene-environment interaction given varying genotype frequencies and environmental exposure odds ratio values. Sample
Empirical Evaluation of Several Population Size Estimates Applied to the Grey Squirrel
"... Don B.A.C., 1984: Empirical evaluation of several population size esti-mates applied to the grey squirrel. Acta theriol. 29, 15: 187—203 [With 7 Tables] A t rap-mark- recap ture study of the grey squirrel in southern England <Shorten & Courtier, 1955) was reanalysed using ten different popula ..."
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popula-tion estimators. Estimates of population size which were not biased by variation in trappabil i ty were derived f rom shot samples. Population closure was assumed. Trapping-based estimates were evaluated by com-parison with shooting-based estimates for various subpopulations and sampling schemes
(Poaceae) after Burial Disturbance Based on Bud Bank Size and Sprouting Capacity
"... The demography of the bud bank and its sprouting capacity are important for understanding the population dynamics of clonal plants and their potential responses to disturbances. To this end, we investigated the size and composition of the bud bank ofMiscanthus sacchari-florus (Maxim.) Hack. immediat ..."
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-ied at 0 cm (64%) and decreased when buried at 10–20 cm (34%–40%). Due to the large number of active axillary buds in the bud bank (211–277 buds m-2 from November to the fol-lowing March),M. sacchariflorus could completely replace its aboveground shoot popula-tion, except in May (142 buds m-2). Increasing
(electronic) Size and Share of Customer Wallet
"... Many companies collect substantial information about their interactions with their customers. Yet information about their customers' transactions with competing firms is often sparse or nonexistent. As a result, firms are often compelled to manage customer relationships from an inward view of ..."
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) how large a portion from the focal firm (i.e., the share decision), which can be 0%, 100%, or anything in between. 1 In the empirical sec- Size and Share of Customer Wallet / 99 tion of this study, we calibrate all three models with the same data and compare them on the basis of their predictive
RESEARCH Improved benchmark-mul
"... Accurate estimates of the size of the drug-using popula-tion are indispensable to govern and evaluate drug pol-(e.g. population-based surveys) fail. Therefore, indirect estimation methods are to be used. Generally, three ..."
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Accurate estimates of the size of the drug-using popula-tion are indispensable to govern and evaluate drug pol-(e.g. population-based surveys) fail. Therefore, indirect estimation methods are to be used. Generally, three
ORIGINAL ARTICLE Long-term trends in the timing of breeding and brood size
"... Abstract Climate change has affected breeding dates and clutch sizes in many bird species. To date, most of the studies aimed at assessing the effects of climate change on these phenological events in birds have been on hole-nest-ing species and the changes linked either to local climate variation o ..."
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shifts in the timing of breeding and brood size in a long-distance migrant, the Red-Backed Shrike (Lanius collurio) from a central European popula-tion. We found a 3- to 4-day shift towards earlier breeding and an increase in brood size by approximately 0.3 nestlings since 1964. The Red-Backed Shrikes
On Being the Right Scale: Sizing Large Collections of 3D Models
"... Figure 1: We use a probabilistic model to determine scales that give a collection of 3D models physically plausible sizes. Left: fifty models randomly sampled from a 12490 model dataset. Many sizes are implausible (red highlights some particularly implausible cases). Right: same models rescaled with ..."
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with our approach (e.g. the DVD player and computer mouse are now plausibly sized in the front row on the right). We address the problem of recovering reliable sizes for a collec-tion of models defined using scales with unknown correspondence to physical units. Our algorithmic approach provides absolute
Gene expression Practical FDR-based sample size calculations in microarray experiments
, 2005
"... Motivation: Owing to the experimental cost and difficulty in obtain-ing biological materials, it is essential to consider appropriate sample sizes in microarray studies. With the growing use of the False Discovery Rate (FDR) in microarray analysis, an FDR-based sample size calculation is essential. ..."
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Motivation: Owing to the experimental cost and difficulty in obtain-ing biological materials, it is essential to consider appropriate sample sizes in microarray studies. With the growing use of the False Discovery Rate (FDR) in microarray analysis, an FDR-based sample size calculation is essential
Results 31 - 40
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946
