This paper offers a discussion of the types of heterogeneity that can occur among processes that share information. The author attempts to establish areas of similarity and difference between the airline, financial and manufacturing industries and the health-care industry. Ways by which information can be shared are discussed, given this heterogeneity, and some recommendations for system design...

Like other industries, the aircraft industry is under high pressure to meet drastically increased customer goals for market price and flexibility. This while at the same time share holders request for short term profit guarantees. Daimler-Benz Aerospace Airbus has met this challenge using business process reengineering methods which led to total company restructuring from functional orientation...

We propose a systematic method for creating constellations of unitary space–time signals for multiple-antenna communication links. Unitary space–time signals, which are orthonormal in time across the antennas, have been shown to be well-tailored to a Rayleigh fading channel where neither the transmitter nor the receiver knows the fading coefficients. The signals can achieve low probability of e...

A concern in the forestry literature is the perceived difference in production behavior between industrially owned forest land and land managed by nonindustrial private forest (NIPJ?) owners (Clawson; Binkley; USDA Forest Service). For instance, in the southern United States, a large share of the region’s softwood timber production (35%) comes from the relatively small share of forested acreage...

This empirical research note documents the relationship between composition of a firm's workforce (with a special focus on age and gender) and its performance with respect to innovative activities (outlays and employment in research and development (R&D)) for a large representative sample of enterprises from manufacturing industries in Germany using unique newly available data. We find that fir...

We evaluate two alternative models of international trade in differentiated products. An increasing returns model where varieties are linked to firms predicts home market effects: increases in a country’s share of demand cause disproportionate increases in its share of output. In contrast, a constant returns model with national product differentiation predicts a less than proportionate increase...

During the late 1970s and early 1980s the United States received a rude awakening on the importance of quality. Foreign competition, particularly from the Japanese, resulted in the loss of significant market share for many American companies. For example, in 1980, Detroit's share of the U.S. auto market was 71.3 percent; by 1991 it declined to 62.5 percent. Japan now supplies over onethird of t...