Managing uncertainty in on-demand air travel

Fractional management companies (FMCs) that provide on-demand air travel services experience frequent changes in aircraft availability and flight requests. We propose scheduling heuristics which are both cost-effective and persistent (i.e., close to the original schedule) to address the uncertainty. The heuristics include pro-actively enforcing idleness of aircraft in creating the original schedule, strategically repositioning aircraft to serve yet-unknown demand and dense scheduling. Computational experiments are conducted in a simulator that mimics FMCs’ daily operations. Simulation results quantify the value of each heuristic, which can be easily incorporated into existing computational methods used in FMCs for static scheduling problems.     

Emerging Market Exposures and the Predictability of Hedge Fund Returns

We examine emerging market and global macro hedge funds and find a significant positive relation between hedge funds’ future returns and their exposure to both emerging market equities and emerging market currencies. We present evidence that the strong predictive power of emerging market betas is related to the superior market‐timing ability of these fund managers. Results are robust after controlling for commonly used hedge fund factors, the emerging market equity index, lagged fund returns, liquidity risk, and fund characteristics. Our results suggest that hedge funds can earn positive excess returns by timing their exposure to emerging market securities.     

Performance of investment strategies in the absence of correct beliefs

We study an evolutionary market model with long-lived assets. We show that in the absence of correct beliefs, the strategy which is “closer” to the Kelly rule cannot be driven out of the market. This means that this strategy will either dominate or at least survive. Our techniques are borrowed from the theory of random dynamical systems.     

Distribution of run statistics in partially exchangeable processes

Let { X_i} _{i 3 1}{{ X_{i}} _{igeq 1}} be an infinite sequence of recurrent partially exchangeable binary random variables. We study the exact distributions of two run statistics (total number of success runs and the longest success run) in { X_i} _{i 3 1}{{ X_{i}} _{igeq1}} . Since a flexible class of models for binary sequences can be obtained using the concept of partial exchangeability, as a special case of our results one can obtain the distribution of runs in ordinary Markov chains, exchangeable and independent sequences. The results also enable us to study the distribution of runs in particular urn models.     

‘Chained to my work'? Strategies to manage temporal and physical boundaries among self‐employed teleworkers

It is accepted that teleworkers generally manage the balance between their home and working lives by establishing temporal and physical boundaries between the two along a continuum of role integration–segmentation. What is less understood is the nature of the relationship between temporal and physical boundaries, and how teleworkers control constituent elements of physical boundaries to secure their preferred location along the continuum. Based on 20 interviews with self‐employed teleworkers, this article examines the ways in which successful control of time depends largely on the successful control of space. It investigates in particular how teleworkers attempt to control space by breaking it down into constituent elements involving equipment, activities and ambiance.     

Gains,Losses, and the US-EPA <Emphasis Type="Italic">Economic Analyses Guidelines</Emphasis>: A Hazardous Product?

While offering many useful suggestions to improve economic analyses, the Guidelines take no account of widely reported behavioural economics research findings. Foregoing the opportunities to improve valuations and other analyses offered by this evidence is likely to lead to inappropriate assessments and consequent distortions of damage estimates, policy and regulatory design. JEL classifications: C91, D61, H43 This review is in part based on studies supported by the U.S. Forest Service and has benefited from comments and suggestionss of Bas Donkers, Robin Gregory, the editor, and referee.