20,644 research outputs found
Innovative Education, President\u27s Progress Report 2017
How can academic leadership create a culture of INNOVATION?
How can faculty more effectively convey their KNOWLEDGE?
How can students learn the skills, traits, and process to become future INNOVATORS
Oxygen diffusion barrier coating
A method for coating a titanium panel or foil with aluminum and amorphous silicon to provide an oxygen barrier abrogating oxidation of the substrate metal is developed. The process is accomplished with known inexpensive procedures common in materials research laboratories, i.e., electron beam deposition and sputtering. The procedures are conductive to treating foil gage titanium and result in submicron layers which virtually add no weight to the titanium. There are no costly heating steps. The coatings blend with the substrate titanium until separate mechanical properties are subsumed by those of the substrate without cracking or spallation. This method appreciably increases the ability of titanium to mechanically perform in high thermal environments such as those witnessed on structures of space vehicles during re-entr
Microsatellite Analysis of Trophy Largemouth Bass from Arkansas Reservoirs
The Arkansas Game and Fish Commission (AGFC) has introduced Florida largemouth bass (FLMB; Micropterus salmoides floridanus) to water bodies historically containing the northern largemouth bass (NLMB; Micropterus salmoides salmoides) subspecies since the late 1970s in an attempt to produce a trophy LMB fishery. Since 2006, the AGFC has been biannually sampling reservoirs stocked with FLMB to determine levels of admixture. Here, total sampling efforts between 2006 and 2011 have been combined, and LMB heavier than 2,268 g (5 lb) were analyzed in an effort to investigate distribution of bass by their genetic composition designated as trophy LMB by the AGFC. Of the 148 trophy LMB sampled, 123 possessed FLMB alleles (83.1%). Thirty-two of the heaviest 50 (64.0%) LMB sampled, including a potential state record that was nullified, were genetically confirmed to be FLMB. Distributions of trophy bass within reservoirs were preferentially represented by Fx-FLMB and FLMB
Surface effects on hydrogen permeation through Ti-14Al-21Nb alloy
Hydrogen transport through Ti-14Al-21Nb (wt percent) alloy is measured using ultrahigh vacuum permeation techniques over the temperature range of 500 to 900 C and hydrogen pressure range of 0.25 to 10 torr. Hydrogen permeability through the alloy can be described through two different mechanisms depending on th temperature of exposure. In the 675 to 900 C range, the process is diffusion-limited: the permeability has a weak temperature dependence, but the diffusivity has a strong temperature dependence. Below 675 C, the permeation rate of hydrogen is very sensitive to surface controlled processes such as the formation of a barrier layer from contaminants. A physical model explaining the role of surface films on the transport of hydrogen through Ti-14Al-21Nb alloy was described
Do Indirect Cost Rates Matter?
This study addresses the relationship between a university\u27s indirect cost rate and its level of federal research funding. Both direct and indirect cost funding are examined. The data used in the analyses include unpublished institutional level data for all doctoral and research universities on funding and indirect cost rates obtained from the National Science Foundation for the fiscal years 1988 to 1997 period. Our major finding is that higher indirect cost rates are associated with higher levels of direct and indirect cost funding for institutions that initially are among the largest recipients of federal funding. In contrast, for universities initially in the lower tail of funding recipients, higher indirect cost rates are associated with lower levels of direct and indirect cost funding.
This pattern of results is hypothesized to be based upon an institution\u27s indirect cost rate serving primarily as a price of research for lesser institutions but serving primarily as a proxy for the quality of the institution\u27s research infrastructure for the major recipients of federal funds. Our findings are consistent with the observation that since 1990 both indirect cost rates and shares of research funding for major private research universities have tended to decline. We find no evidence that faculty at major research universities are disadvantaged in their quests for external research funding by high indirect cost rates
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