Locally stable price mechanisms

This paper develops necessary conditions for a price adjustment mechanism to achieve local stability at regular competitive equilibria. Two principal questions are: how closely must a locally stable mechanism be tailored to particular excess demand functions, and can any such mechanism be interpreted as a market adjustment process. In response to the first question, a variant of the (local) Newton method, termed the ‘orthogonal Newton method’ is shown to require, in a dimensional sense, the minimal information about excess demand functions. The second question is answered in the negative by proving the non-existence of any locally stable mechanism with the property that the price of any given commodity is not changed when its own market is in equilibrium. These and other results are obtained by using convergent price paths to generate a homotopy between the adjustment dictated by the mechanism and the actual direction of the equilibrium.     

Virtual Special Issue on Migration

This editorial introduces a virtual special issue of Spatial Economic Analysis compiled to mark the keynote lecture at the 46th Annual Conference of the Regional Science Association International—British and Irish Section in Cornwall by Professor Jacques Poot of the National Institute of Demographic and Economic Analysis, University of Waikato. Professor Poot's lecture on migration, which is also the theme of this virtual special issue, could not be more topical. Migration is a central issue in public discourse in Europe and the United States, and is setting the agenda for political debate throughout the developed world. The ongoing refugee crisis in Europe, the associated rise in populist, nationalist political movements in Europe and the United States, and the recent vote by the UK to leave the European Union all have migration at their centre.     

Judges' Attitudes toward the Public Accounting Profession

Abstract

This paper presents the results of two related studies. In Study One we examine US judges' attitudes toward the public accounting profession and the extent to which those attitudes have changed over three distinct periods of time: (a) early in the decade of the 1990s, (b) late in the decade of the 1990s, but before the Enron and subsequent corporate debacles, and (c) three years after the Enron debacle. We anticipate that attitudes of judges toward the public accounting profession will be relatively stable over time, but nonetheless subject to change if given a substantial stimulus. In Study Two we compare the most current judges' attitudes with those of law students, MBA students and auditors. In total, we find that judges' attitudes are significantly (1) more negative towards the profession in the most recent survey, (2) equivalent to attitudes exhibited by law students and MBA students, and (3) divergent from attitudes of practicing auditors. Conclusions and future research are also discussed.     

Enabling control and the problem of incomplete performance indicators

To which extent do managers care about the design characteristics of performance indicators and other control systems? The paper examines this question with the help of the framework of enabling and coercive control. Drawing upon data from a longitudinal field study in a manufacturing organisation, we study operational managers’ attitudes towards the incompleteness of performance indicators. Managers are likely to perceive performance indicators as enabling if the latter facilitate their actions without unduly constraining them. This is true even for incomplete performance indicators as long as managers can handle these indicators in a flexible way, treating them as means rather than ends when carrying out their work. Our case also shows, however, how a flexible use of indicators becomes more difficult to sustain once top management signals an increased importance of the indicators. Incompleteness then becomes a more pressing concern for managers. We illuminate the various forms of top management sense-giving through which such tightening of control is achieved and we show how they translate into managers’ perception of the control system as being a coercive rather than enabling one. Taken together, the findings of the present paper add to our understanding of enabling and coercive forms of control and also extend previous studies that have addressed the problem of incomplete accounting information.     

Current trends in hospital mergers and acquisitions

Healthcare reform will impact hospital consolidation in three key areas: Payment rates will decrease, indirectly encouraging consolidation by forcing hospitals to find new ways to reduce costs and increase negotiating clout with suppliers and payers. The cost of doing business will increase as hospitals spend more on compliance, technology, and physician employment. The ACO model will encourage hospital network formation by rewarding integrated healthcare systems that can reduce costs and improve quality.     

The effects of the frequency of spatially proximate and distant interaction on innovation by Irish SMEs

This paper tests whether more frequent interaction at different spatial levels has a positive effect on the innovation performance of small- and medium-sized enterprises (SMEs) in the South-West and South-East of Ireland. Based on an original survey, it finds that more frequent interaction generally increases innovation likelihood, but at a diminishing rate, thus suggesting a trade-off between resources dedicated to transforming knowledge into new products and processes. Spatially distant interaction is found to be at least as valuable as proximate interaction, which questions the received wisdom that the best sources of knowledge are regional. Given the value of distant interaction, the results indicate that regional lock-in may be an obstacle to superior innovation performance of SMEs.     

Rural in-migration and agricultural development: Evidence from Zambia

While a considerable body of literature has developed in recent years around the drivers and consequences of rural out-migration in sub-Saharan Africa, relatively little work has been done to understand the impacts of migration into rural areas. We use nationally representative household survey data from Zambia to explore the relationship between rural in-migration and agricultural productivity outcomes in receiving communities. We document high levels of rural in-migration throughout Zambia—12% of rural household heads having moved from elsewhere within the previous 10 years—with two-thirds of rural in-migrants originating from other rural areas. Migrants are, on average, better endowed with capital resources than their nonmigrant neighbors and are more engaged with input and output markets. After controlling for other factors, we find that higher rates of rural in-migration are associated with greater agricultural productivity outcomes in receiving communities. These positive associations are particularly pronounced in more remote rural areas, and where in-migration originates from other rural areas. Taken together, our results suggest that rural in-migrants play an important role in the rural transformation processes underway in Zambia.     

Buffering in evacuation management for optimal traffic demand distribution

This paper presents a new framework for managing congestion during emergency evacuations. The algorithm allows a long link of the network to be used as a buffer to keep the traffic flow moving in. Concurrently, a detour trigger time is estimated to keep the traffic under-saturated in the buffer zone and minimize the total travel time. The integration algorithm presented in this paper is an efficient mathematical solution for travel time cost calculation. A case study is presented to demonstrate the efficacy of the traffic demand buffering strategy developed in this research for managing the evacuation flow.     

What factors influence auditors' use of computer-assisted audit techniques?

To meet the challenges of rapid advances in client technology, audit standards urge auditors to use computer-assisted audit tools and techniques (CAATs). However, recent research suggests that CAAT use is fairly low. This paper uses the Unified Theory of Acceptance and Use of Technology (UTAUT) to identify and then examines factors potentially influencing auditors' use or non-use of CAATs. Examining auditor use of CAATs is important because CAATs hold out the promise of improving audit efficiency and effectiveness. Data was obtained from 181 auditors from Big 4, national, regional, and local firms. Results indicate that outcome expectations, the extent of organizational pressures and technical infrastructure support influence the likelihood that auditors will use CAATs.