Generating the efficient frontier of a class of bicriteria generalized fractional programming

In this paper, a particular class of bicriteria maximization problems over a compact polyhedron is considered. The first component of the objective function is the ratio of powers of affine functions and the second one is linear. Several theoretical properties are provided, such as the pseudoconcavity of the first criterium of the objective function, the connectedness and compactness of both the efficient frontier and the set of efficient points. The obtained results allow us to propose a new simplex-like solution method for generating the whole efficient frontier; to better clarify the use of the suggested algorithm, several examples are described and the results of a computational test are presented.     

Reducing Organizational Politics in Performance Appraisal: The Role of Coaching Leaders for Age‐Diverse Employees

We examined whether a supervisor's coaching leadership style predicts the perception of organizational politics in performance appraisal (OPPA) reported by the collaborators. Additionally, we drew on social cognition and motivational life‐span development theories to hypothesize age‐related differences in perceived OPPA and its link with the coaching leadership style. Using hierarchical linear modeling (HLM) on a sample of 576 employees and 112 leaders, we found that coaching leaders are perceived as less manipulative in their performance ratings, especially by older employees. This article includes a discussion of the implications these results have for performance management of an age‐diverse workforce. © 2016 Wiley Periodicals, Inc.     

‘Brexit’ and International Insolvency Beyond the Realm of Mutual Trust

The outcome of the referendum held in the UK in June 2016 is of far‐reaching and unpredictable consequences. This article focuses on the particular field of international insolvency with a view to identifying some of them, all arising out of the fact that the UK will be leaving the EU area of justice and the strong cooperation based on mutual trust between member states. This will make UK–EU insolvency cases clearly less efficient and effective. The consequences of Brexit could be mitigated by the already existing coordination among the international instruments dealing with these matters, in particular the European Insolvency Regulation and the UNCITRAL Model Law on Cross‐Border Insolvency. However, not all EU member states have in place rules dealing with these issues as regards to third states. In order to lessen the impact of Brexit in this sensitive area of law, the implementation of the Model Law in order to deal with extra‐EU cross‐border insolvency could be of avail. Copyright © 2017 INSOL International and John Wiley & Sons, Ltd     

Linking international business theory to accounting history: implications of the international evolution of the state and the firm for accounting history research

Accounting is an interdisciplinary subject. We routinely draw insights and models from the base disciplines (e.g. economics, psychology etc.) as a starting point for research on accounting issues. As accounting researchers, and accounting historians in particular, explore the international dimensions of accounting it is appropriate, therefore, to look to the literature on international relations for insights. This paper provides examples of how we could use the literature on the nation-state and international enterprises to frame questions about international accounting history.     

CASE STUDY: BUS FLEET REPLACEMENT

Parallel replacement analysis is concerned with determining minimum cost replacement schedules for a group of assets that are economically interdependent and operate in parallel. That is, keep and replace decisions are required for each asset among a group of assets over a specified horizon. The assets are economically linked through economies of scale or budgeting constraints. One application of parallel replacement analysis is fleet replacement. We recently studied the operations, including fleet replacement policies, for a city transit bus operator in Europe. Key factors in their replacement decisions included the ability to choose from multiple manufacturers, purchase price, and government regulations. We explore these and other factors, by solving a heterogeneous replacement problem with fixed costs, budgeting constraints, and demand constraints. Through extensive sensitivity analysis we analyze the impact of various parameters on decisions, in terms of the choice of replacement assets, as well as the optimal time to retain assets. Additionally, we provide motivation for future research in this application area, which is important for many cities.     

Remixing work,family and leisure: teleworkers' experiences of everyday life

This paper explores whether and in what ways telework is associated with a reconfiguration or remixing of daily work, family and leisure activities. Semi‐structured interviews were conducted with 51 teleworkers employed in a financial organisation in Canada. For some, telework was a condition of employment, while others negotiated part‐time telework arrangements with managers. Using interpretive thematic analysis techniques, intersections and inter‐relationships between experiences of work, family and leisure were identified. Three main themes emerged, including the need to not only protect, but also containing work time and space; the significance of family and being available for children; and, the relative devaluation of leisure. Although it was anticipated that differences between involuntary and voluntary teleworkers would be evident, gender and family stage were more influential in structuring daily life. The flexibility of telework was valued, but there was little evidence of a reconfiguration of life spheres except for women with children at home.     

Moral hazard among the sick and unemployed: evidence from a Swedish social insurance reform

This paper studies a specific type of moral hazard that arises in the interplay between two large public social insurance systems in Sweden, namely the sickness insurance (SI) and the unemployment insurance (UI). Moral hazard can arise from the structure of the benefit levels as for some unemployed persons benefits from the SI are higher than benefits from the UI. We use a reform of the SI system that came into force on 1 July 2003 to identify the effect of economic incentives arising from the different benefit levels. The purpose of the reform was to eliminate the difference in benefits between the two social insurance systems. Our results from a duration analysis show clearly that the higher the sickness benefits, the higher the probability of reporting sick.     

Income Per Capita Inequality in China: The Role of Economic Geography and Spatial Interactions

(1241) Laura Hering and Sandra Poncet This paper contributes to the analysis of growing income inequality in China. We apply a structural model of economic geography to data on per capita income over 190 Chinese cities between 1995 and 2002, and evaluate the extent to which market proximity and spatial dependence can explain the growing income inequality between Chinese cities. The econometric specification explicitly incorporates spatial dependence in the form of spatially‐lagged per capita income. We show that the geography of market access and spatial dependence are significantly correlated with per capita income in China. Market access is particularly important in cities with smaller migration inflows, which is consistent with NEG theory, whereas spatially‐lagged per capita income matters more in cities with greater immigration. We conclude that the positive impact of spatially‐lagged income partly results from labour mobility between neighbours, so that spatial dependence reflects the influence of migration, knowledge transfers and increasing competition between cities.     

The bull and bear market model of Huang and Day: Some extensions and new results

We develop a financial market model with interacting chartists and fundamentalists that embeds the famous bull and bear market model of Huang and Day as a special case. Their model is given by a one-dimensional continuous piecewise-linear map. Our model, on the other hand, is more flexible and is represented by a one-dimensional discontinuous piecewise-linear map. Nevertheless, we are able to provide a more or less complete analytical treatment of the model dynamics by characterizing its possible outcomes in parameter space. In addition, we show that quite different scenarios can trigger real-world phenomena such as bull and bear market dynamics and excess volatility.