Recycling consumer solid waste: A commentary on selected channel alternatives

The recycling of consumer solid waste presents special problems for reverse marketing channels. Specifically, the accumulation of bulk quantities of homogenous materials from consumer-generated sources that are highly heterogenous in nature represents a major functional problem that must be overcome through the development of appropriate reverse marketing channels. In this article, factors influencing reverse channels development are outlined, and specific marketing implications concerning the three basic channel types that primarily handle consumer solid waste are discussed.     

由《奥兰多》看伍尔夫双性同体的女性主义倾向

伍尔夫通过《奥兰多》这部小说表明了自己对女性主义的看法,提出双性同体的观点。这一观点明确表明伍尔夫主张女性和男性从智力和地位上是根本平等的,女性并不逊色于男性,所以女性从本质上是独立的,拥有自我的。在双性同体的前提之下,女性获得独立而健全的人格,自身的话语权的实现成为可能。伍尔夫双性同体的观念涵盖了后来许多女性主义的观点,也引起后人对女性主义思想当中如何确认女性这个概念的讨论,是一种具有超前性和涵盖性的理念。     

Tests of expectancy theory predictions of effort: A simulation study comparing simple and complex models

The authors summarize existing studies of expectancy theories of work effort and conclude that simple additive models generally predict effort as well as, or better than, more complex multiplicative ones. An attempt is made to explain the empirical findings using a computer simulation. The results of the simulation indicate that reasonable amounts of measurement error invalidate attempts to show that one combination of valence, expectancy, and instrumentality is a better predictor of work effort than any other. The authors conclude that even though questions regarding complex interactions cannot be answered, valence, expectancy, and instrumentality, taken independently, appear to be important determinants of work effort and point out areas where future research is needed.     

Stochastic and nonstochastic determinants of changes in client-industry concentrations for large public-accounting firms

Market-concentration ratios of audits of large publicly held firms have been found to be high by Zeff and Fossum (1967), Rhode et al. (1974), and Campbell (1981). Both stochastic (random) forces and nonstochastic (deterministic) forces may cause increased concentration ratios. To determine the affects of stochastic forces on audit-concentration ratios, a computer simulation was developed using Gibrat's (1931) theorem. The results of the simulation indicate that the volatility of the concentration ratios may be affected by nonstochastic forces as well as by stochastic forces. The nonstochastic forces are described and discussed vis-á-vis the public-accounting profession's competitive environment.     

Coal gasification: An economic evaluation

Political interest in developing the capability to produce gaseous fuel from coal in the United States has been cyclical in nature, depending primarily upon the security of the international market for oil and public attitudes toward nuclear power. Interest in coal gasification technology by private investors, however, depends primarily on the economic and technological considerations analyzed in this paper. A cost forecasting model is developed with the capability to take into account future economic and technological uncertainties associated with producing high BTU gas (a substitute for natural gas) from coal. The cost forecasting model incorporates probabilistic information on key economic and technological parameters subject to future uncertainty and simulates, by Monte Carlo methods, the costs which private investors would incur over the life of a commercial size coal gasification plant. The results suggest it is highly unlikely that the coal gasification process could produce high BTU gas more cheaply than the price at which natural gas is likely to be available.The cost forecasting model is also modified to compare the cost per kilowatt–hour of generated electricity when fueling a 1,000 Mw power plant with oil versus high BTU gas from coal. Again, based upon the costs to private investors, the simulation results indicate a very low probability that high BTU gas from coal would prove the least costly fuel for generating electricity.The implied economic infeasibility for private investment in coal gasification does not necessarily provide a basis for public policy to abandon the technology. Public policy recommendations must consider social costs as well as private costs. Possibly the greatest social cost associated with abandoning coal gasification is the risk of a significant energy supply interruption. A diversified national energy policy including coal gasification may in fact be less costly if relevant social costs are included in the calculations. Results from the cost forecasting model indicate the size and type of public subsidies that may be necessary to support a diversified energy industry which would include coal gasification.