Optimal portfolios under worst-case scenarios

In standard portfolio theories such as Mean–Variance optimization, expected utility theory, rank dependent utility heory, Yaari’s dual theory and cumulative prospect theory, the worst outcomes for optimal strategies occur when the market declines (e.g. during crises), which is at odds with the needs of many investors. Hence, we depart from the traditional settings and study optimal strategies for investors who impose additional constraints on their final wealth in the states corresponding to a stressed financial market. We provide a framework that maintains the stylized features of the SP/A theory while dealing with the goal of security in a more flexible way. Preferences become state-dependent, and we assess the impact of these preferences on trading decisions. We construct optimal strategies explicitly and show how they outperform traditional diversified strategies under worst-case scenarios.     

The transition from products to solutions: External business model fit and dynamics

This article provides empirical evidence and contributes to theory building concerning business model fit and dynamics in the area of solutions business. Business models are seen in this context as going beyond considerations such as offerings and internal processes or even relationships, and as including network and market considerations. Indeed the paper highlights the fact that a business model is not firm-focused, nor dyad-focused, but rather network-, and even market-focused, demonstrating that a business model is not static, but dynamic. Manufacturer and customer continuously shift form and content of their respective business models to adapt both to the needs of the counterpart and to market context. A qualitative case study approach is adopted, with subsequent content analysis. The case study relates to the aerospace industry with focus on a complex engineering firm, one of the largest aircraft manufacturers in the world, its customer — a national airline — and their network partners of various kinds. The data were collected through multiple face-to-face interviews with managers in both companies, as a part and parcel of a network of actors that influences and is influenced by the supplier–buyer relationship. Relationships over time between these firms and network partners are described, highlighting the interplay of products and services related to the provision of solutions. Findings highlight the dynamic nature of business models over the relationship lifecycle between supplier and customer in a complex engineering environment, and the need for reciprocal adjustment of models.     

The impact of perceived ethical intensity on audit-quality-threatening behaviours

Although there has been significant interest among researchers in audit-quality-threatening behaviours (QTBs), the decision process through which staff auditors engage in those behaviours has received relatively little attention. It seems likely that the ethical intensity of the behaviours perceived by auditors may play an important role in that process; to date, this has not been tested. This study examines the mediating role of perceived ethical intensity in the relationship between perceived ethical culture of the firm and the auditors' ethical evaluation of, and intention to engage in, three different forms of QTBs. A multi-item measure of ethical intensity is developed and the findings provide the first empirical evidence of a direct relationship between perceived ethical intensity and ethical decision-making regarding QTBs. Moreover, the findings show that perceived ethical intensity fully mediates the relationship between perceived ethical culture and ethical decision-making. Implications of the findings for accounting firms and for researchers are discussed and areas for future research on the mediating role of perceived ethical intensity are suggested in the paper.     

Computers BITE accounting education

The recent establishment of the £20 million Teaching and Learning Technology Programme by the Universities' Funding Council in the UK provides one of the largest boosts for IT and education since PLATO (in the USA) and NDPCAL (in the UK). This note describes the BITE project which is part of the above programme and highlights some of the problems that have affected both the development and evaluation of accounting courseware in the past. By using a strong interdisciplinary team of software, educational and subject specialists, the project hopes to overcome some or all of these problems.     

A UK Empirical Test of the Larson-Gonedes Exchange Ratio Model

This paper adopts the Larson-Gonedes merger exchange ratio determination model to investigate the bargaining area in UK takeovers involving share-for-share exchanges. The model focuses on price-earnings ratios rather than share price returns and so is more consistent with practical valuation methods than other approaches. The basic model is extended for the UK to consider both cash alternative offers and mixed offers involving cash and equity consideration. The model is tested on a sample of 95 UK takeovers between 1984 and 1988 using consecutively unadjusted, FT All Share Index adjusted and beta adjusted price bases. The analysis adopts the conventional chi-square test used by Conn and Nielsen but, in addition, a new test is developed based on a Generalised Likelihood Ratio. We find that on an unadjusted price basis there is greater support for the Larson-Gonedes model in the UK than Conn and Nielsen found for the US. However, our extended model based on adjusted prices provides more cautious support. In addition, we conduct a sensitivity analysis to test the robustness of the results and provide further evidence on the wealth effects on acquiring and acquired company shareholders.     

Development and Pricing of a New Participating Contract

Abstract

This article designs and prices a new type of participating life insurance contract. Participating contracts are popular in the United States and European countries. They present many different covenants and depend on national regulations. In the present article we design a new type of participating contract very similar to the one considered in other studies, but with the guaranteed rate matching the return of a government bond. We prove that this new type of contract can be valued in closed form when interest rates are stochastic and when the company can default.     

Japanese managerial and organizational learning

The article describes how the external forces of Japanese culture, industrial organization, and government intervention support managerial and organizational learning. It provides an overview of the culturally explicit philosophies that govern and stimulate learning in Japan, then explains how these philosophies are exhibited in Japanese management practice today. A model is presented which demonstrates the relationships among external forces, philosophical origins, management practice, and managerial and organizational learning. The conclusion is that managerial and organizational learning constitute one of Japan's most valuable competitive advantages. © 1998 John Wiley & Sons, Inc.     

Effects of multimember districts on black representation in state legislatures

We look at the most general feature of multimember districts (MMDs) as compared to single-member districting (SMD) plans: the higher likelihood of submergence of minority voting strength. We focus on data on black legislative representation between 1977 and 1982 in the 11 states with more than 15% black populations, and compare states which use MMDs with those that use SMDs. We also examine changes in black representation in states which shifted from MMDs to SMDs. In addition, for MMD state legislative elections in eight North Carolina counties between 1978 and 1982, we examine in detail the nature of minority submergence including the lack of geographic representativity of the persons elected from MMDs. The counties we examine contain four of North Carolina’s largest cities and a substantial portion of North Carolina’s black population. Unlike almost all of the previously published literature on racial representation in MMDs, our study deals with state legislative races and not local elections.