There is often evidence of confusion between two forms of the constant percentage learning curve model: the cumulative average and the individual unit forms. Failure to distinguish between the two models can lead to their misuse and to potentially serious errors of estimation. A precise statement of the difference between the two clarifies the errors of misspecification. This note provides an analytical comparsion of the two models and addresses empirical estimation issues. Résumé. On a souvent la preuve de la confusion entre deux formules de modèle de la courbe d'apprentissage à pourcentage constant: celle de la moyenne cumulative et celle de l'unité individuelle. Le fait de ne pas distinguer les deux modèles peut conduire à une mauvaise utilisation et éventuellement à de sérieuses erreurs d'estimation. Un examen précis de la différence entre les deux peut clarifier les erreurs de spécification. Cet article présente une comparaison analytique des deux modèles et traite des questions d'estimation empirique.

This paper examines real wage measures that include leisure and nonlabor income in consumption decisions with respect to the advantages and disadvantages of partial versus complete welfare orderings and of utility-based versus utility-free wage indices. In addition, we argue that the usefulness of a real wage measure beyond welfare comparison has been ignored. To test the robustness of utility-based indices, these real wage measures are calculated for two different utility-function specifications, the indirect addilog system and the linear expenditure system. Further comparisons are made against index bounds that are independent of the functional form for preferences.

The 1980 Depository Institution Deregulation and Monetary Control Act (DIDMCA) mandates that Regulation Q be phased out by 1986. With deregulation of interest rate ceilings, the cost of raising capital funds for commercial banks would become more volatile and more closely related with interest rates in the money and capital markets. Thus, value‐maximizing bank managers would need to be concerned not only with the internal risk, but also with the external risk in bank portfolio management decisions. Based upon the cash flow version of the capital asset pricing model, this paper analyzes the joint impact of interest rate deregulation and capital requirements on the portfolio behavior of a banking firm.

This paper examines the implications of the joint effects of insurance and taxes for the optimal corporate pension strategy. It is shown that neither the “mini-max” nor the “maxi-min” strategy advocated by previous authors is necessarily best in corporate pension management. In the presence of capital market imperfections, the analysis via a single-period contingent-claims model indicates that optimal corporate pension strategy in both asset-allocation and funding decisions can be a noncorner interior solution.

The 1980 Depository Institution Deregulation and Monetary Control Act (DIDMCA) mandates that Regulation Q be phased out by 1986. With deregulation of interest rate ceilings, the cost of raising capital funds for commercial banks would become more volatile and more closely related with interest rates in the money and capital markets. Thus, value-maximizing bank managers would need to be concerned not only with the internal risk, but also with the external risk in bank portfolio management decisions. Based upon the cash flow version of the capital asset pricing model, this paper analyzes the joint impact of interest rate deregulation and capital requirements on the portfolio behavior of a banking firm.

This paper examines the implications of the joint effects of insurance and taxes for the optimal corporate pension strategy. It is shown that neither the “mini‐max” nor the “maxi‐min” strategy advocated by previous authors is necessarily best in corporate pension management. In the presence of capital market imperfections, the analysis via a single‐period contingent‐claims model indicates that optimal corporate pension strategy in both asset‐allocation and funding decisions can be a noncorner interior solution.

This paper considers the problem of forming a hedge when there are perceived profit opportunities. We show that the option price obeys a modified Black and Scholes equation. Iterative methods yield the appropriate hedge ratio.

[Auditors are charged with the responsibility of evaluating internal control systems. Recent advances in decision support systems indicate that the speed, accuracy, and memory capacity of computers may be used to aid auditors in this task. To test this proposition, a computer-assisted method of designing, analyzing, and evaluating internal control systems, called The Internal Control Model or TICOM, was designed and implemented. The technical manual and the TICOM software are available from the authors. This paper presents the results and conclusions of that project. TICOM is a computer-based analytic tool that aids the auditor first to model the internal control system and then to query the model in order to aid the auditor in evaluating the internal control system. TICOM is based on concepts in artificial intelligence such as knowledge representation and graph simplification. It serves (1) to describe office information systems while emphasizing internal accounting controls and (2) as an aid in control evaluation. It was found that the advantages of TICOM over traditional evaluation methods are that (1) the evaluation can be more rigorous and exhaustive, (2) the documentation of the system can be more thorough because of automated completeness and consistency tests, and (3) the modeler may probe and test controls by using the query-processing portion of TICOM.]

Auditors are charged with the responsibility of evaluating internal control systems. Recent advances in decision support systems indicate that the speed, accuracy, and memory capacity of computers may be used to aid auditors in this task. To test this proposition, a computer-assisted method of designing, analyzing, and evaluating internal control systems, called The Internal Control Model or TICOM, was designed and implemented. The technical manual and the TICOM software are available from the authors. This paper presents the results and conclusions of that project. TICOM is a computer-based analytic tool that aids the auditor first to model the internal control system and then to query the model in order to aid the auditor in evaluating the internal control system. TICOM is based on concepts in artificial intelligence such as knowledge representation and graph simplification. It serves (1) to describe office information systems while emphasizing internal accounting controls and (2) as an aid in control evaluation. It was found that the advantages of TICOM over traditional evaluation methods are that (1) the evaluation can be more rigorous and exhaustive, (2) the documentation of the system can be more thorough because of automated completeness and consistency tests, and (3) the modeler may probe and test controls by using the query-processing portion of TICOM.