Viewpoint: competitiveness and the community college

Bill Green is living proof that community colleges can lead to a great career. In this “Viewpoint,” he makes the case that they also can help U.S. business maintain its competitive edge while improving the economic resilience of local communities.Community colleges

Catching crabs: a case study in local-scale English conservation

Wells-next-the-Sea and Cromer in Norfolk (England) both rely upon their local crab populations, since crabbing (gillying) is a major part of their tourist industry. Compared to a control site with no crabbing, crabs from Wells harbour and Cromer pier were found to have nearly six times the amount of limb damage. Crabs caught by the general public had more injuries than crabs caught in controlled conditions, suggesting the buckets in which the crabs were kept were to blame. Since there is much evidence that such injuries have negative impacts on the survival and reproductive success of the shore crab, this is taken as evidence of non-lethal injury from humans having a population-level effect on these animals. Questionnaire data demonstrated a public lack of awareness and want for information, which was then used to obtain funding to produce a leaflet campaign informing the public of how to crab responsibly. All data collected is available online at http://dx.doi.org/10.6084/m9.figshare.979288

Constitutional Law

Covers cases on dams and waterpower—eminent domain—interstate commerce—municipal corporations—res judicata—state officers—the Cowlitz Dam Case (Stoebuck) and on treaties with Indians—fishing rights (Green)

Tax

Covers cases on the retail sales tax—construciton of home by speculative builder not a retail sale; on retail sales tax as tax on gross sales of vendor; on use tax—consumer and exceptions thereto defined—taxation of property consumed during manufacturing process (Lenihan); and on state taxation of exports (Green)

Common Pokeweed Management in Corn and Soybeans with a Conservation Tillage Cultivator and Herbicides

Common pokeweed (Phytolacca americana L.) is a warm-season perennial that grows well in nondisturbed areas such as fence rows and woodland borders. In recent years it has begun spreading to com and soybean fields where no-tillage practices are used. The deep taproot that is characteristic of common pokeweed, makes this weed difficult to manage, particularly in no-till plantings. The green leaves, fleshy stems, and purple berries of common pokeweed can inhibit the harvesting process and lead to discounts at the elevator for high moisture and stained seed. The equipment industry has developed cultivators with large sweeps capable of operating in no-till plantings with minimal disturbance to stubble and plant residue at the soil surface. These cultivators are called conservation tillage cultivators and are intended to operate at shallow depths to cut plants below the soil surface. The fact that plants with deep taproots generally do not tolerate tillage may make the conservation tillage cultivator a valuable tool for managing common pokeweed in no-till plantings. The objective of this research was to evaluate the effectiveness of a conservation-till cultivator with and without herbicide treatments for common pokeweed control in corn and soybean

Lasing from a circular Bragg nanocavity with an ultra-small modal volume

We demonstrate single-mode lasing at telecommunication wavelengths from a circular nanocavity employing a radial Bragg reflector. Ultra-small modal volume and Sub milliwatt pump threshold level are observed for lasers with InGaAsP quantum well active membrane. The electromagnetic field is shown to be tightly confined within the 300nm central pillar of the cavity. The quality factors of the resonator modal fields are estimated to be on the order of a few thousands.Comment: 3 pages, 4 figures Submitted to AP

An Estimate of the Soil Fertility Status of Graves and Todd Counties in Kentucky

Some concern has developed during recent years that fertilizer is being used by farmers on fields with residual levels of P and K high enough that such use is not justified as a means of increasing crop yields. This has been due to increased average soil test values for samples routinely submitted to college soil test laboratories. For this reason, studies were conducted in Graves and Todd Counties in Kentucky during the period September, 1978 to September, 1980, to determine if soil samples routinely submitted to college test laboratories do or do not accurately reflect the average soil fertility status of a county

Report on Lithium Ion Battery Trade Studies to Support the Exploration Technology Development Program (ETDP) Energy Storage Project

This report documents the results of two system related analyses to support the Exploration Technology Development Program (ETDP) Energy Storage Project. The first study documents a trade study to determine the optimum Li-ion battery cell capacity for the ascent stage battery for the Altair lunar lander being developed under the Constellation Systems program. The battery cell capacity for the Ultra High Energy (UHE) Li-ion battery initially chosen as the target for development was 35 A-hr; this study concludes that a 19.4 A-hr cell capacity would be more optimum from a minimum battery mass perspective. The second study in this report is an assessment of available low temperature Li-ion battery cell performance data to determine whether lowering the operating temperature range of the Li-ion battery, in a rover application, could save overall system mass by eliminating thermal control system mass normally needed to maintain battery temperature within a tighter temperature limit than electronics or other less temperature sensitive components. The preliminary assessment for this second study indicates that the reduction in the thermal control system mass is negated by an increase in battery mass to compensate for the loss in battery capacity due to lower temperature operating conditions