Some asymptotic behaviour of the bootstrap estimates on a finite sample

Bootstrapping the mean, variance, standard error of the mean, regression coefficient and its standard error is considered. It is shown that at a fixed sample size bootstrap estimates converge to classical sample estimates as the number of bootstrap replications tends to infinity. For the mean, variance and regression coefficient, convergence almost everywhere is proven; for the standard error of the mean and standard error of the regression coefficient, weak convergence is proven. The speed of convergence is illustrated by simulation results.     

Quality certification, institutions and innovation in local agro-food systems: Protected designations of origin of olive oil in Spain

This article examines the interrelations between establishment of territorial quality certification systems (Protected Designations of Origin or PDOs), diffusion of innovations through local agro-food chains, and the role of the institutions overseeing geographical designations. Empirical analysis is applied to olive oil PDOs in Spain and entails a detailed case study of the “Sierra Mágina” PDO in Andalusia. Making use of the neoinstitutional concept of ‘organised proximity’—and focussing specifically on the problematic of organizational quality—the article assesses characteristics that support the competitive positions of local certified-product production systems. In particular, the authors find that collective organisation and coordination between PDO agents who are locally responsible for quality assurance and protection can enhance local competitiveness. Three hypotheses are confirmed. First, PDO labels can, through the action of PDO regulators, become quality assurance systems for distributors. Second, PDO Regulatory Boards can enhance and coordinate local inter-professional activities, particularly with respect to the diffusion of quality-enhancing innovations and knowledge. Third, the study indicates that local certified-product systems are starting to incorporate quality attributes linked to the environment and sustainable development, although much remains to be accomplished in this regard.     

Mystification as an Artistic Strategy in Milan Kundera's Work

ABSTRACT

Using close reading of Kundera's texts, Jan ?ulík argues that many arguments in Milan Kundera's literary works are deliberate provocations. Kundera's approach is undoubtedly related to post-modernism, although he used his mystification techniques long before the arrival of postmodernism, as early as in the Stalinist 1950s when he published fake quotes from Lenin in official Stalinist publications. In Jan ?ulík's view, it is the purpose of Milan Kundera's systematic use of false facts, distortions and disrupted logic to warn his readers against against the unreliability of words and human communication. Kundera seems to argue that the world in its complexity is basically unknowable and the only thing that is left for us is, in despair, in our ignorace of what is going on around us, to carry out pranks.     

Social policies related to parenthood and capabilities of Slovenian parents

We apply Sen's capability approach to evaluate the capabilities of Slovenian parents to reconcile paid work and family in the context of the transition to a market economy. We examine how different levels of capabilities together affect the work–life balance (WLB) of employed parents. We combine both quantitative and qualitative methodological approaches. The results of our quantitative and qualitative research show that increased precariousness of employment and intensification of work create gaps between the legal and normative possibilities for successful reconciliation strategies and actual use of such arrangements in Slovenia. The existing social policies and the acceptance of gender equality in the sphere of paid work enhance capabilities for reconciliation of paid work and parenthood, whereas the intensification of working lives, the dominance of paid work over other parts of life, and the acceptance of gender inequalities in parental and household responsibilities limit parents’ capabilities to achieve WLB.     

Robust estimation of dynamic fixed-effects panel data models

This paper extends an existing outlier-robust estimator of linear dynamic panel data models with fixed effects, which is based on the median ratio of two consecutive pairs of first-order differenced data. To improve its precision and robustness properties, a general procedure based on higher-order pairwise differences and their ratios is designed. The asymptotic distribution of this class of estimators is derived. Further, the breakdown point properties are obtained under contamination by independent additive outliers and by the patches of additive outliers, and are used to select the pairwise differences that do not compromise the robustness properties of the procedure. The proposed estimator is additionally compared with existing methods by means of Monte Carlo simulations.     

I get by with a little help from my supervisor: Creative-idea generation,idea implementation,and perceived supervisor support

In two studies using both field (165 employees and their 24 direct supervisors from a manufacturing firm in Study 1) and experimental (123 second-year undergraduate student participants in lab Study 2) data, we explore how perceived supervisor support acts as a crucial contingency that enables higher levels of idea implementation from creative-idea generation. First, we suggest that excessive creative-idea generation (in terms of both frequency and creativity of ideas) can lead to diminished returns with regard to idea implementation. Drawing on a resource allocation framework, we hypothesize and find a curvilinear inverse U-shaped relationship between employee creative-idea generation and implementation. Second, we find that higher levels of perceived supervisor support dampen the curvilinear relationship between creative-idea generation and idea implementation. Accordingly, perceived supervisor support seems to provide employees with access to resources and support needed for idea implementation, making highly creative ideas more implementable.     

Work, family, and managerial attitudes and practices in the European workplace: comparing Dutch, British, and Slovenian financial sector managers

Managers are key actors shaping employees’ capabilities to utilize work–life policies. However, most research on managers’ implementation of these policies has been conducted in liberal welfare states and ignores the impact of institutional context. In this study, we situate managers within specific workplace and national layers of context. We investigated how managers in financial organizations in the Netherlands, UK, and Slovenia talk about the utilization of work–life policies. Managers’ discourses stressed disruption and dependency considerations in these case studies, as in the US research. However, a further management discourse of the moral case or right thing to do also emerged. The lack of resources for replacing staff on leave creates disruption and reduces managers capability to support the use of work–life policies, even when they are statutory or if managers are inclined be supportive (dependency or moral argument). This is likely to impact on parents' capabilities.     

A Note on the Upper Bound to Variance of the Sample Extreme from a Finite Population

We construct a new upper bound for the variance of the sample minimum and maximum in the case of a simple random sample drawn without replacement. The bound is optimal in the form provided. Similar bounds are shown for the other order statistics.     

Shiftwork tolerance and circadian rhythms in oral temperature and heart rate

Abstract

The study aimed at establishing differences in the circadian rhythm parameters of oral temperature and heart rate between three groups of workers matched by age: tolerant shiftworkers with good sleep quality and few psychosomatic and digestive complaints, intolerant shiftworkers with poor sleep quality and more psychosomatic and digestive complaints, and workers who had never worked in shifts. The study was performed at an oil refinery recreation centre where the subjects were isolated for three days. During that period they lived under constant conditions, i.e. their activities, timing and content of meals, ambient temperature and light were controlled. Hourly measurements of oral temperature and heart rate were performed over a 24-h period. The parameters of the physiological rhythms were estimated by means of the COSINA method. Generally, the differences between the groups were low and not statistically significant. The authors could find no difference in the amplitude and phase position between the tolerant shiftworkers unlike other authors. The difference between these results and those of others is likely to be due to the fact that earlier studies were performed in field conditions where many factors that could have masked the results were not controlled for.     

Algebraic foundation of mathematical statistics 2

In the paper fibre processes are considered, i.e. discrete sets of curves distributed at random in the plane. For translation invariant fibre processes the PALM distribution of the angle in a typical fibre point is defined, and point processes are studied which are obtained by intersection with lines. As a special case motion invariant, i.e. translation invariant and isotropic, fibre processes are treated. Finally weighted fibre processes are considered. As example segment processes are investigated.