Stratiform clouds and their interaction with atmospheric motions

During the 1987 to 1988 academic year, three projects were finished and plans were made to redirect and focus work in a proposal now being reviewed. The completed work involves study of waves on an equatorial beta-plane in shear flow, investigation of the influence of orography on the index cycle, and analysis of a model of cloud street development in a thermally-forced, sheared environment. The proposed work involves study of boundary layer circulations supporting stratocumulus decks and investigation of how the radiative effects of these clouds modulate larger-scale flows such as those associated with the index oscillation

The Supervision of the Guidance Program in a Small High School

The small high school has some problems to overcome in order to do an effective job in the guidance of its young people. It is difficult for the staff to find time for guidance activities in the busy schedule of today\u27s curriculum. Released time is very necessary if effective counseling is to be done. Another problan to be faced is the lack of trained personnel to head the guidance program. The high school principal must find a capable person or else head the program himself. A third problem faced by the small high school is that of maintaining adequate records and obtaining usable anecdotal records. Teachers must have special training to be able to maintain anecdotal records. The solving of these problems will insure a feasible fulfillment of the small high schools guidance needs. The success or failure of the guidance program will depend upon how well the high school principal solves the for mentioned problems

FDA New Drug Approval Times, Prescription Drug User Fees, and R & D Spending

FDA-approval times have declined significantly since the enactment of the Prescription Drug User Fee Act (PDUFA) in 1992. As a result, present value expected returns to pharmaceutical R&D have likely increased. In the current paper we employ a unique survey dataset, which includes for the first time data on firm-level pharmaceutical R&D. We estimate the effects that FDA-approval times have on R&D investments. Controlling for other factors such as pharmaceutical profitability and cash flows, we find that a 10 percent decrease (increase) in FDA-approval times results in a 1.7 percent in increase (decrease) in R&D spending.Combining this estimate with previous research and publicly available data on industry-level pharmaceutical spending between 1992 and 2001, we conclude PDUFA, and its subsequent renewals, stimulated an additional 13.5 billion in pharmaceutical R&D (2005 U.S.), and has presumably continued to do so since 2001. Recent economic research has shown the social rate of return on pharmaceutical R&D is remarkably high; thus, the social benefits of PDUFA (over and above the benefits of more rapid consumer access) are likely to be substantial.

Implications of summertime marine stratocumulus on the North American climate

This study focuses on the effects of summertime stratocumulus over the eastern Pacific. This cloud is linked to the semi-permanent sub-tropical highs that dominate the low-level circulation over the Pacific and Atlantic. Subsidence on the eastern flank of these highs creates an inversion based about 800 m above sea level that caps moist air near the surface. This air overlies cool waters driven by upwelling along the coastal regions of North America. Strong surface north-westerlies mix the boundary layer enough to saturate the air just below the capping inversion. Widespread stratocumulus is thus formed. All calculations were carried out using the GENESIS general circulation model that was run at MSFC. Among the more important properties of the model is that it includes radiative forcing due to absorption of solar radiation and the emission of infrared radiation, interactive clouds (both stratocumulus and cumulus types), exchanges of heat and moisture with the lower boundary. Clouds are interactive in the sense that they impact the circulation by modifying the fields of radiative heating and turbulent fluxes of heat and moisture in the boundary layer. In turn, clouds are modified by the winds through the advection of moisture. In order to isolate the effects of mid- and high-latitude stratocumulus, two runs were made with the model: one with and the other without stratocumulus. The runs were made for a year, but with perpetual July conditions, i.e., solar forcing was fixed. The diurnal solar cycle, however, was allowed for. The sea surface temperature distribution was fixed in both runs to represent climatological July conditions. All dependent variables were represented at 12 surfaces of constant sigma = p/p(sub O), where p is pressure and p(sub O) is surface pressure. To facilitate analysis, model output was transformed to constant pressure surfaces. Structures no smaller in size than 7.5 degrees longitude and 4.5 degrees in latitude were resolved. Smaller features of the circulation were parameterized. The model thus captures synoptic- and planetary-scale circulation features