The localization sequence for the algebraic K-theory of topological K-theory

We prove a conjecture of Rognes by establishing a localization cofiber sequence of spectra, K(Z) to K(ku) to K(KU) to Sigma K(Z), for the algebraic K-theory of topological K-theory. We deduce the existence of this sequence as a consequence of a devissage theorem identifying the K-theory of the Waldhausen category of Postnikov towers of modules over a connective A-infinity ring spectrum R with the Quillen K-theory of the abelian category of finitely generated pi_0(R)-modules.Comment: Updated final version. Small change in definition of S' construction and correction to the proof of 2.

Story structure and age effects on children\u27s ability to sequence stories

To investigate the strategies children use in comprehending written stories, third, sixth, and ninth grade students were given scrambled six-sentence stories and asked to reorder them. Three versions of each of six stories were created. The first version was the canonical form of the story predicted by story grammar rules; the second version began with a sentence which questioned the conclusion of the canonical form; and in the third this conclusion began the story. Significant effects of grade and structure indicated that the canonical form was more easily ordered than were the other structures, and also that third grade students were less accurate at the task than were sixth or ninth grade students. These effects were shown for pairwise and completely correct orderings and for a confidence-rating measure. Additionally, children were shown to use an event-sequence strategy and to attend to various surface text features. However, the results suggested that the deep structure (story grammar structure) was of much greater importance in comprehension than were features of surface structure

Evaluation of Materials and Concepts for Aircraft Fire Protection

Woven fiberglass fluted-core simulated aircraft interior panels were flame tested and structurally evaluated against the Boeing 747 present baseline interior panels. The NASA-defined panels, though inferior on a strength-to-weight basis, showed better structural integrity after flame testing, due to the woven fiberglass structure

Planting Date Effects on Yield and Grain Composition of High Oil Corn

TopCross Blend® high oil corn blends have added a new dimension to the specialty grain market. Producers have been able to utilize the higher oil content of the grain for their own livestock operations or contract their grain for a premium price. Little is known about the effects of cultural agronomic practices on the grain composition of high oil corn, particularly how the percentage of oil is affected. As a result, research is needed to evaluate the effects of planting date and to determine if there is a limited period in which high oil corn can be planted without detrimental effects. During the 2000 and 2001 growing seasons, the effects of planting date were evaluated in this study, which was conducted concurrently at two other university research farms

Efficacy of Corn Seed Coated with ProShield™ Technology with Force ST® for Insect Control in Field Corn

This study was initiated in 2001 with a primary objective to look at the efficacy of seed corn coated with ProShieldTM Technology with Force ST. ProShieldTM is a new technology aimed at controlling corn rootworm and secondary pests by coating fungicide on the seed, prior to planting. It was our goal to look at this product as well as two granular fungicides and their effectiveness on early season stand establishment, yield, and late season root lodging. Further testing over time and locations would solidify the results of the 2001 study

Fine particulate matter pollution and risk of community-acquired sepsis

While air pollution has been associated with health complications, its effect on sepsis risk is unknown. We examined the association between fine particulate matter (PM2.5) air pollution and risk of sepsis hospitalization. We analyzed data from the 30,239 community-dwelling adults in the Reasons for Geographic and Racial Differences in Stroke (REGARDS) cohort linked with satellite-derived measures of PM2.5 data. We defined sepsis as a hospital admission for a serious infection with ≥2 systemic inflammatory response (SIRS) criteria. We performed incidence density sampling to match sepsis cases with 4 controls by age (±5 years), sex, and race. For each matched group we calculated mean daily PM2.5 exposures for short-term (30-day) and long-term (one-year) periods preceding the sepsis event. We used conditional logistic regression to evaluate the association between PM2.5 exposure and sepsis, adjusting for education, income, region, temperature, urbanicity, tobacco and alcohol use, and medical conditions. We matched 1386 sepsis cases with 5544 non-sepsis controls. Mean 30-day PM2.5 exposure levels (Cases 12.44 vs. Controls 12.34 µg/m3; p = 0.28) and mean one-year PM2.5 exposure levels (Cases 12.53 vs. Controls 12.50 µg/m3; p = 0.66) were similar between cases and controls. In adjusted models, there were no associations between 30-day PM2.5 exposure levels and sepsis (4th vs. 1st quartiles OR: 1.06, 95% CI: 0.85–1.32). Similarly, there were no associations between one-year PM2.5 exposure levels and sepsis risk (4th vs. 1st quartiles OR: 0.96, 95% CI: 0.78–1.18). In the REGARDS cohort, PM2.5 air pollution exposure was not associated with risk of sepsis