Investigation of wheat coleoptile response to phototropic stimulations

This report provides a summary of the preparations for, and the conduct and post-flight data analysis of, the Spacelab flight investigation FOTRAN, which flew on the IML-1 mission (STS-42) in January, 1992. The investigation was designed to provide data on the responses of wheat seedlings to various blue-light stimuli given while the plants were exposed to orbital microgravity conditions. Before the flight, a number of hypotheses were established which were to be tested by the data from the flight and parallel ground studies. A description of the experiment protocol developed for the mission is provided, and an account of the activities supported during preparations for and support of the flight experiment is given. Details of the methods used to reduce and analyze the data from the flight are outlined

A proposal to determine properties of the gravitropic response of plants in the absence of a complicating g-force (GTHRES)

Gravitropic responses of oat seedlings (Avena sativa L.) were measured on Earth and in microgravity (IML-1). The seedlings were grown at 1 g either on Earth or on 1 g centrifuges. They were challenged by centripetal accelerations for which the intensity and duration of the stimulations were varied. All stimulation intensities were in the hypogravity region from 0.1 to 1.0 g. All responses occurred either in Spacelab microgravity or during clinorotation on Earth. The experiments were carried out with the same apparatus in Spacelab and on Earth. The experiments addressed a series of scientific questions and useful data were obtained to provide answers to some but not all of those questions

Oil prices and aggregate economic activity: a study of eight OECD countries

Power resources - Prices ; Organisation for Economic Co-operation and Development

Oil prices and inflation

Power resources - Prices ; Inflation (Finance)

The Beneficial Impact of Sorting Heavy Cattle at Re-Implant

This research examined a simple sorting strategy to reduce the prevalence of heavyweight carcass discounts. Cattle that were identified and sorted off at re-implant had a reduced prevalence of heavyweight carcasses versus unsorted cattle. Re-implant sorting was profitable at pen average in-weights of 800 pounds or less.cattle, fed cattle marketing, cattle sorting, formula marketing, Farm Management, Livestock Production/Industries, Marketing, Q11, Q16, M31,

A Review of the Role of Labor in Recent International Trade Models

The traditional focus of international trade theory has had limited overlap with the analytical orientation of practitioners in the field of human resource management and industrial relations (HRM/IR). This is an unfortunate lapse since both areas are concerned with the issues of industrial growth, employment, and income distribution - issues that are closely related to international comparative advantage and commercial policy. Recently, trade economists have begun to explore the implications of international trade for issues that have previously been considered the domain of labor economists, such as the individual's decision to acquire an education, the likelihood of labor action in an industry, and the size of the union wage premium over a competitive sector. This review is intended to stimulate HRM/IR economists to consider general equilibrium influences on the behavior of labor and to invite suggestions concerning the treatment of labor issues in international trade models.Research Seminar in International Economics, Department of Economics, University of Michiganhttp://deepblue.lib.umich.edu/bitstream/2027.42/100652/1/ECON127.pd