The number partitioning problem (NPP) is to divide n numbers a1, . . . , an into two disjoint subsets such that the difference between the two subset sums – the discrepancy, ∆, is minimized. In the balanced version of NPP (BalNPP), the subsets must have the same cardinality. With ajs chosen uniformly from [1, R], R > 2 gives the hard phase, when there are no equal partitions (i.e., ∆ = 0) with ...

Understanding nutrient limitation of net primary productivity (NPP) is critical to predict how plant communities will respond to environmental change. Foliar nutrients, especially nitrogen and phosphorus concentrations ([N] and [P]) and their ratio, have been used widely as indicators of plant nutritional status and have been linked directly to nutrient limitation of NPP. In tropical systems, h...

Comparisons among evolutionarily related enzymes offer opportunities to reveal how structural differences produce different catalytic activities. Two structurally related enzymes, Escherichia coli alkaline phosphatase (AP) and Xanthomonas axonopodis nucleotide pyrophosphatase/phosphodiesterase (NPP), have nearly identical binuclear Zn(2+) catalytic centers but show tremendous differential speci...

[1] We investigated the potential effects of elevated ozone (O3) along with climate variability, increasing CO2, and land use change on net primary productivity (NPP) and carbon storage in China’s terrestrial ecosystems for the period 1961–2000 with a processbased Dynamic Land Ecosystem Model (DLEM) forced by the gridded data of historical tropospheric O3 and other environmental factors. The si...

PDF HTML?? XML?? ???? ???? ?????????????????????????????? DOI: 10.5846/stxb202202050295 ??: ????: ????: ????: ?????: ????: ?????"????"??????????????????2020YFA0607702????"????"??????????????????????????"?????????????"???2019QZKK0405? Quantitative analysis of the impacts climate change and human activities on vegetation NPP in Qilian Mountain National Park Author: Affiliation: Fund Project: ?? |...

The CASA (Carnegie-Ames-Stanford) ecosystem model has been used to estimate monthly carbon fluxes in terrestrial ecosystems from 2000 to 2009, with global data inputs from NASA’s Terra Moderate Resolution Imaging Spectroradiometer (MODIS) vegetation cover mapping. Net primary production (NPP) flux for atmospheric carbon dioxide has varied slightly from year-to-year, but was predicted to have in...

The rapid expansion of the amount of genomic and structural data has provided many examples of enzymes with evolutionarily related active sites that catalyze different reactions. Functional comparisons of these active sites can provide insight into the origins of the enormous catalytic proficiency of enzymes and the evolutionary changes that can lead to different enzyme activities. The alkaline...

A study was conducted to evaluate the effects of dietary levels of calcium, nonphytate P (NPP), phytase and 25-hydroxycholecalciferol (25-OH) on live performance and bone development in male chicks fed a wheat-based diet. Dietary treatments consisted of a 2 x 2 x 4 x 4 factorial arrangements with two levels of supplemental phytase (0 or 1200 FTU/kg), two levels of 25-OH (0 or 69 μg/kg), four le...

1 Executive Summary 2 1.1 Sensor and SDR Characterization . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2 1.2 CrIMSS IDPS EDR Products . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 1.3 CrIS/ATMS Additional Products . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 1.4 IDPS Processing Limitation . . . . . . ....