The marketing effectiveness of UK environmental charity websites compared to best practice

All nonprofit organisations need to give attention to their marketing strategies in order to maximise the funding and support they receive and the numbers using their services. The web offers a new communications medium with which to achieve this. This paper compares suggested best practice approaches to web marketing using the websites of UK environmental charities as a type of nonprofit organisation. Copyright © 2003 Henry Stewart Publications     

Testing the assumptions behind importance sampling

Importance sampling is used in many areas of modern econometrics to approximate unsolvable integrals. Its reliable use requires the sampler to possess a variance, for this guarantees a square root speed of convergence and asymptotic normality of the estimator of the integral. However, this assumption is seldom checked. In this paper we use extreme value theory to empirically assess the appropriateness of this assumption. Our main application is the stochastic volatility model, where importance sampling is commonly used for maximum likelihood estimation of the parameters of the model.     

Monotone imitation dynamics in large populations

We analyze a class of imitation dynamics with mutations for games with any finite number of actions, and give conditions for the selection of a unique equilibrium as the mutation rate becomes small and the population becomes large. Our results cover the multiple-action extensions of the aspiration-and-imitation process of Binmore and Samuelson [Muddling through: noisy equilibrium selection, J. Econ. Theory 74 (1997) 235–265] and the related processes proposed by Benaı¨m and Weibull [Deterministic approximation of stochastic evolution in games, Econometrica 71 (2003) 873–903] and Traulsen et al. [Coevolutionary dynamics: from finite to infinite populations, Phys. Rev. Lett. 95 (2005) 238701], as well as the frequency-dependent Moran process studied by Fudenberg et al. [Evolutionary game dynamics in finite populations with strong selection and weak mutation, Theoretical Population Biol. 70 (2006) 352–363]. We illustrate our results by considering the effect of the number of periods of repetition on the selected equilibrium in repeated play of the prisoner's dilemma when players are restricted to a small set of simple strategies.     

Mindfulness-based training interventions for employees: A qualitative review of the literature

We provide a comprehensive qualitative review of 67 published studies that have examined mindfulness-based training interventions conducted with employees. The findings indicate that the most common research designs were the pre-test/post-test only design (35.8%) and the randomized waitlist control group design (26.9%). About two-thirds of the studies included a control group (61.2%), with approximately three-quarters (75.6%) of these studies using random assignment. Of the 63 studies that used a conventional experimental design, the majority (65.1%) included only one follow-up assessment, most often immediately after training. Results indicated a great degree of heterogeneity in terms of program content, although many studies used some adaptation of Kabat-Zinn's (1990) Mindfulness-Based Stress Reduction (41.8%), an approach with a strong evidentiary base with clinical populations. All training programs incorporated practice, most (85.1%) used multiple methods of delivering the training material, and training varied considerably in total duration, session length, and the number of training sessions. Our review also found that the intended purpose of mindfulness-based training for employees was most commonly the reduction of stress/strain (80.6%), although a wide range of other targeted outcomes were documented. Based on our findings, we offer suggestions for future research aimed at advancing our understanding of mindfulness-based training interventions with employees.     

The impact of supervisor–subordinate relationships on morale: implications for public and private sector nurses' commitment

This paper used leader–member exchange theory as a lens for comparing the impact of the supervisor–subordinate relationship on public and private nurses' perceptions of morale and affective commitment. Many countries that are part of the Organisation for Economic Co-operation and Development are experiencing nurse shortages, and this theoretical framework proved insightful into factors contributing to turnover. The findings suggested that private sector nurses are significantly more satisfied with their supervision, enjoy greater morale and are more committed to their organisations. However, both groups were only slightly satisfied with their supervisor–subordinate relationships, implying that present management practices are not ideal for promoting effective workplace relationships. Implications for health-care management are discussed.     

Learning from private information in noisy repeated games

We study the perfect type-contingently public ex-post equilibrium (PTXE) of repeated games where players observe imperfect public signals of the actions played, and both the payoff functions and the map from actions to signal distributions depend on an unknown state. The PTXE payoffs when players are patient are determined by the solutions to a family of linear programming problems. Using this characterization, we develop conditions under which play can be as if the players have learned the state. We provide a sufficient condition for the folk theorem, and a characterization of the PTXE payoffs in games with a known monitoring structure.     

Year-end and quarter-end effects in the term structure of sterling repo and Eurepo rates

Griffiths and Winters [Griffiths, M., Winters, D., 1997. On a preferred habitat for liquidity at the turn-of-the-year: evidence from the term-repo market, Journal of Financial Services Research 12, 21–38] find a year-end preferred habitat for liquidity for US repo rates, and, later [Griffiths, M., Winters, D., 2005. The-turn-of-the-year in money markets: tests of the riskshifting window dressing and preferred habitat hypotheses, Journal of Business 78, 1337–1364] find a similar preferred habitat for US money market instruments. Kotomin et al. [Kotomin, V., Smith, S., Winters, D., 2008. Preferred habitat for liquidity in international shortterm interest rates, Journal of Banking and Finance 32, 240–250] document the preferred habitat in LIBOR for the major world currencies, excluding the British pound. We examine the robustness of these results using pound sterling and euro repo rates and find a year-end preferred habitat for liquidity in the euro repo rates. The British interest rates continue to behave differently, and we provide a possible explanation as to why this occurs.