A methodology for the assessment of ridesharing program benefits and impacts

Due to the increased cost and decreased availability of energy, many cities are developing experimental ridesharing programs. The evaluation of such public transportation programs often involves some form of benefit/cost analysis. In this paper we review a methodology proposed by Wagner for calculating ridesharing program benefits. We propose a modification for calculating vehicle-miles reduction and suggest a survey instrument for collecting the appropriate data. In addition, we present a surrogate measure which is simpler to compute and allows sensitivity analysis for incorporating certain intangible factors. Data from a survey conducted in the Greater Cincinnati area is used to illustrate the calculations. The results can be useful in evaluating other ridesharing programs.     

Valuation of asset leasing contracts

This paper describes the relation among a variety of asset leasing contracts, including: (1) cancellable operating leases; (2) leases which grant the lesse an option to extend the life of the lease; (3) leases that grant the lessee an option to purchase the leased asset at a fixed price at the maturity date of the lease; (4) leases that grant the lessee the right to purchase the leased asset at its ‘fair market value’ at the maturity date of the lease; (5) leases that grant an option to the lessee to purchase the leased asset at a prespecified price anytime during the life of the lease; (6) leases that require the lessee to purchase the leased asset at a fixed price at the maturity date of the lease; and (7) leases that contain non-cancellation provisions. The paper uses a compound option pricing framework to develop a general model for valuing (or evaluating) each of the types of leasing contracts. Numerical examples are presented to illustrate the effect of the various elements of a leasing contract — including cancellation risk and residual value risk — on equilibrium rental payments.     

The videotex marketplace: A theory of evolution

Prospects for videotex in general and for business videotex applications in particular, are still highly controversial and speculative. There is growing agreement, however, that the future of videotex as a mass medium may hinge on its initial acceptance as a business tool. The authors present their views on the factors that will influence the use of videotex in business; how it may evolve as a business tool; and how its early impact in the business environment may eventually be the cause of its acceptance as a mass consumer medium.     

Corporate sponsored image films

The vast number of high quality corporate image and advocacy films, combined with the many other instruments of persuasion and control by corporations, powerfully direct the attitudes of the populace. In the absence of equal access, the best protection against deception from any powerful institution is skepticism — minds trained in critical thinking. But technically proficient, expensive films (costing from $50,00 to $600,000) encourage credulity instead of thought. The schools should train young people, therefore, how to resist corporate film propaganda by teaching them the kinds of questions to ask. An analysis of Chesebrough-Pond Corporation's Family offers an effective method through combining traditional rhetorical awareness of the speaker in a communication, knowledge of informal fallacies, the National Council of Teachers of English Committee on Public Doublespeak's ‘intensify/downplay’ approach, and Richard Ohmann's method in ‘Doublespeak and Ideology in Ads’.     

Revitalization: The most difficult of all strategies

American industry following World War II has enjoyed much success, primarily built on growth and easily consumed material and human resources. Since 1973, however, resources have become increasingly critical and problems increasingly complex. Organizations large and small are faced with dramatic change. Strategies for growth and decline are clearly understood. A little-noted strategy, yet the most difficult of all strategies to implement, is that of revitalization. This article emphasizes the use of technology, middle managers, and interdisciplinary organization analysis as the necessary ingredients for American revitalization strategy success in the 1990s.     

Tests for model specification in the presence of alternative hypotheses: Some further results

In Davidson and MacKinnon (1981), two of the present authors proposed a novel and very simple procedure for testing the specification of a nonlinear regression model against the evidence provided by a non-nested alternative. In this paper we extend their results in several directions. First, we relax a number of the assumptions of the previous paper; we admit the possibility that the nonlinear regression functions may depend on lagged dependent variables, and we do not require that the error terms be normally distributed. Second, we show how the earlier procedure may straightforwardly be generalized to the case where the two non-nested models involve different transformations of the dependent variable. Finally, we propose a simple procedure for testing non-nested linear regression models which have endogenous variables on the right-hand side, and have therefore been estimated by two-stage least squares.