Flexible Work and Turnover: an Empirical Investigation across Cultures

We explored the relationship between three bundles of flexible work arrangements (FWAs) and turnover for two of GLOBE's societal clusters, namely Anglo and Nordic. We collected data through a large‐scale international survey and found significant differences in the FWA–turnover relationship between the two clusters. Specifically, as unsocial hours (overtime, shift work, weekend work) and part‐time arrangements (part‐time and job‐sharing) increase in the Anglo cluster, so does turnover. Further, as schedule flexibility (telework, work from home and flexi‐time) increases in the Nordic cluster, turnover decreases. The results raise issues about the universal applicability of FWA policies and practices among nationally and internationally operating organizations.     

RISK ASSESSMENT UNDER A NONLINEAR FISCAL POLICY RULE

In the aftermath of the recent debt crisis, many countries are implementing nonlinear fiscal policy rules, whereby the government's responsiveness to debt strengthens at higher levels of debt. This paper examines how a nonlinear fiscal policy rule affects the possibility of future insolvency in a small open economy. We find that (1) the criteria for a nonlinear fiscal rule to eliminate explosive behavior should be tighter than the ones proposed by Bohn (1998); (2) a country that adopts a nonlinear fiscal rule could substantially reduce the probability of a solvency crisis; and (3) a nonlinear fiscal rule allows a country to reduce the possibility of insolvency without large initial responsiveness. (JEL C63, E62, E63, F34, H63)     

Appointment Scheduling with No‐Shows and Overbooking

We study an overbooking model for scheduling arrivals at a medical facility under no‐show behavior, with patients having different no‐show probabilities and different weights. The scheduler has to assign the patients to time slots in such a way that she minimizes the expected weighted sum of the patients' waiting times and the doctor's idle time and overtime. We first consider the static problem, where the set of patients to be scheduled and their characteristics are known in advance. We partially characterize the optimal schedule and introduce a new sequencing rule that schedules patients according to a single index that is a function of their characteristics. Then we apply our theoretical results and conclusions from numerical experiments to sequential scheduling procedures. We propose a heuristic solution to the sequential scheduling problem, where requests for appointments come in gradually over time and the scheduler has to assign each patient to one of the remaining slots that are available in the schedule for a given day. We find that the no‐show rate and patients' heterogeneity have a significant impact on the optimal schedule and should be taken under consideration.     

In-migration, entrepreneurship and rural–urban interdependencies: The case of East Cleveland, North East England

In-migration is a key influence in the process of rural economic development in England, Continental Europe and the US. New arrivals are often viewed in the literature as contributors in new venture creation, as well as catalysts in enhancing rural–urban interdependencies in the countryside. This paper sets out to explore the validity of this view in the case of East Cleveland: a rural area with a tradition of mining and industry, occupying the coastal fringe of the Tees Valley city-region. In doing so, the paper compares this locality with other parts of rural England in order to draw some wider conclusions. Particular emphasis is placed on comparisons with Cumbria, where comparable data are available. The paper argues that the impact of in-migration on the conditions of supply of entrepreneurship is cumulative rather than transformational. This means that it is particularly profound in localities with strong opportunity nexus, reinforcing favourable demand side conditions. However, the ability of in-migrant entrepreneurs to influence rural–urban interdependencies in areas with weak opportunity nexus (such as East Cleveland) is modest.     

Terrorism and the effectiveness of security spending in Greece: Policy implications of some empirical findings

Greece has over the years faced serious security challenges from domestic as well as transnational terrorist activity. This paper examines empirically the effectiveness of counter-terrorism policy and particularly it focuses on current and investment expenditure on domestic security and public order. Using annual budget data for the 1974–2004 period, it investigates whether current and investment spending by the Ministry of Public Order has been an effective policy measure to counter terrorism. The results seem to suggest that such investment has at best a weak negative impact on internal terrorist actions. The main policy implication of this finding is that investing in counter-terrorist infrastructure and equipment can potentially prove to be an effective policy measure in the fight against terrorism. This, however, may be conditional upon a number of other factors including other anti-terrorist measures such as legislation or how efficiently such expenditure is used.     

THE RELIGIOUS OBSERVANCE OF RAMADAN AND PROSOCIAL BEHAVIOR

We investigate experimentally the impact on prosocial behavior of the religious observance of Ramadan. Our sample consists of male factory workers in a manufacturing facility in a Muslim country. In our between‐subjects' design, each worker is asked to allocate an amount of money between himself and a stranger. Specifically, we examine behavior of observants and nonobservants before and after the daily break of the Ramadan fast. We also examine behavior outside of Ramadan, where we treat alimentary abstention as akin to a long fasting period. We hypothesize and confirm that outside Ramadan, decision makers who abstain from any alimentary intake transfer less money to recipients relative to decision makers who do not abstain. Strikingly, this effect is reversed during the month of Ramadan. Specifically, observant workers who are in the midst of their Ramadan fast are far more generous to recipients than workers who have had their evening meal. Interestingly, observant and nonobservant workers after the daily break of the Ramadan fast and workers outside Ramadan that consumed aliments make statistically similar transfers. Our findings suggest that it is the interaction between alimentary abstention and religious observance that amplifies prosocial behavior during Ramadan, where fasting is part of the ritual. (JEL C91, C93, C72)     

Close Approximations of Minimum Rectangular Coverings

We consider the problem of covering arbitrary polygons with rectangles. The rectangles must lie entirely within the polygon. (This requires that the interior angles of the polygon are all greater than or equal to 90 degrees.) We want to cover the polygon with as few rectangles as possible. This problem has an application in fabricating masks for integrated circuits.In this paper we will describe the first polynomial algorithm, guaranteeing an O(log n) approximation factor, provided that the n vertices of the input polygon are given as polynomially bounded integer coordinates. By the same technique we also obtain the first algorithm producing a covering which is within a constant factor of the optimal in exponential time (compared to the doubly-exponential known before).     

Monitoring of zero-inflated binomial processes with a DEWMA control chart

Control charts are widely used for monitoring quality characteristics of high-yield processes. In such processes where a large number of zero observations exists in count data, the zero-inflated binomial (ZIB) models are more appropriate than the ordinary binomial models. In ZIB models, random shocks occur with probability θ, and upon the occurrence of random shocks, the number of non-conforming items in a sample of size n follows the binomial distribution with proportion p. In the present article, we study in more detail the exponentially weighted moving average control chart based on ZIB distribution (ZIB-EWMA) and we also propose a new control chart based on the double exponentially weighted moving average statistic for monitoring ZIB data (ZIB-DEWMA). The two control charts are studied in detecting upward shifts in θ or p individually, as well as in both parameters simultaneously. Through a simulation study, we compare the performance of the proposed chart with the ZIB-Shewhart, ZIB-EWMA and ZIB-CUSUM charts. Finally, an illustrative example is also presented to display the practical application of the ZIB charts.     

Single-Stage and Serial Production Line Systems with Unreliable Machines and General Probability Distributions

This paper presents stochastic models for analyzing production to stock and production on demand systems with arbitrary demand, production, machine breakdown and repair processes, and a finite buffer. Expressions are developed for the transition probabilities among the different states, the proportion of transitions that take the process to a particular state, the probabilities that the process is at a particular state, and the expected state residence times. Also, expressions are developed for some quantities of interest, like average inventory, percentage of lost sales, and expected waiting time. Applications are discussed for various demand, production, machine breakdown, and repair processes and numerical examples are presented. Guidelines are given for utilizing the models in evaluating the economic performance of production systems. Using an approximation procedure, the models are used for modeling multi-stage serial production to stock and production on demand lines. Simulation results indicated that the quality of the approximation is very good. The multi-stage models are useful in practical situations, because they allow the use of different probability distributions for the various processes (production, machine failure, etc.) of each stage.