Does Mental Productivity Decline with Age? Evidence from Chess Players We use data on international chess tournaments to study the relationship between age and mental productivity in a brain-intensive profession. We show that less talented players tend to leave the game in the earliest phases of their career. When the effects of age on productivity vary with unobserved ability, commonly used fi...

The 2014 Indian general election marked a single party – the Bharatiya Janata Party, winning a majority of seats in Lok Sabha, the first time since the 1984 election. The Congress, the other main national party, suffered its worst ever defeat. This election was termed by some as a 'critical election' signalling the advent of a new phase of a ‘BJP dominated’ party system in India. In this paper,...

The 2014 Indian general election marked a single party – the Bharatiya Janata Party, winning a majority of seats in Lok Sabha, the first time since the 1984 election. The Congress, the other main national party, suffered its worst ever defeat. This election was termed by some as a 'critical election' signalling the advent of a new phase of a ‘BJP dominated’ party system in India. In this paper,...

Condition monitoring diagnosis of distress and forecasting deterioration, strengthening and rehabilitation of aging bridge structures is a challenge faced by many road authorities in the world. The accurate prediction of the future condition of bridge elements is essential for optimising the maintenance activities. Most authorities conduct regular condition inspection activities followed by a h...

A finite horizon inventory model for a single deteriorating product is studied. The system is under periodic review and there is a positive fixed order cost associated with any placed order. The demand in successive periods is independent and identically distributed. A constant fraction of any positive leftover stock is deteriorated at the end of each period. Any unsatisfied demand is partially...

The process industry is increasingly making use of Risk Based Inspection (RBI) techniques to develop cost and/or safety optimal inspection plans. This paper proposes an adaptive Bayesian decision model to determine these optimal inspection plans under uncertain deterioration. It uses the gamma stochastic process to model the corrosion damage mechanism and Bayes’ theorem to update prior knowledg...

In the existing approach to maintenance and repair decision making for infrastructure facilities, policy evaluation and policy selection are performed under the assumption that a perfect facility deterioration model is available. The writer formulates the problem of developing maintenance and repair policies as a reinforcement learning problem in order to address this limitation. The writer exp...

Handling Editor: Stephanie Castro In this study, we develop and examine a model of leaders' impression management during organizational decline by elaborating on the roles of publicity, image concerns, and incentive compensation. We propose that the publicity of decline is an important antecedent of leaders' impression management during decline. We also examine how leaders' image concerns media...

This study considers the problem of a vendor which supplies an item to the buyer with imprecise partial backlogging rate of unsatisfied demand and non instantaneous deterioration rate considering variable holding cost, the effect of inflation and time value of money. The supplier’s lead time is a stochastic function of his managing cost. The extra costs incurred by the retailer due to the uncer...

The aim of this paper is to discuss the problem of modelling and optimising condition-based maintenance policies for a deteriorating system in presence of covariates. The deterioration is modelled by a non-monotone stochastic process. The covariates process is assumed to be a time-homogenous Markov chain with finite state space. A model similar to the proportional hazards model is used to show ...