Social Aspects of Sustainable Competitiveness in the Selected European Countries in the Period 2012–2015

Social Indicators Research - The paper examines the impact of the social dimension of sustainable competitiveness on the economic dimension, where the social dimension is represented by Indicators...     

A new family of lifetime models

We introduce a new family of distributions by adding a parameter to the Marshall–Olkin family of distributions. Some properties of the new family of distributions are derived. A particular case of the family, a three-parameter generalization of the exponential distribution, is given special attention. The shape properties, moments, distributions of the order statistics, entropies and estimation procedures are derived. An application to a real data set is discussed.     

Confidence intervals for the ratio of two variances

In this paper we consider confidence intervals for the ratio of two population variances. We propose a confidence interval for the ratio of two variances based on the t-statistic by deriving its Edgeworth expansion and considering Hall's and Johnson's transformations. Then, we consider the coverage accuracy of suggested intervals and intervals based on the F-statistic for some distributions.     

On the convergence of two sequential Monte Carlo methods for maximum a posteriori sequence estimation and stochastic global optimization

This paper addresses the problem of maximum a posteriori (MAP) sequence estimation in general state-space models. We consider two algorithms based on the sequential Monte Carlo (SMC) methodology (also known as particle filtering). We prove that they produce approximations of the MAP estimator and that they converge almost surely. We also derive a lower bound for the number of particles that are needed to achieve a given approximation accuracy. In the last part of the paper, we investigate the application of particle filtering and MAP estimation to the global optimization of a class of (possibly non-convex and possibly non-differentiable) cost functions. In particular, we show how to convert the cost-minimization problem into one of MAP sequence estimation for a state-space model that is “matched” to the cost of interest. We provide examples that illustrate the application of the methodology as well as numerical results.     

The Effect of Sensorimotor Training on the Postural Stability of Visually Impaired Women Over 50 Years of Age

Previous studies indicated that blind and visually impaired people are a group with greater risk of falls. Postmenopausal changes significantly decrease physical efficiency and impair the body’s mechanisms for maintaining postural stability. In addition, the frequency of falls among women is much higher than in men. The aim of this study was to analyze the effect of sensorimotor exercise on changes in postural stability of visually impaired women over 50 years of age. Visually impaired women from group E showed a lower level of postural stability measured with EO compared to the healthy women. After completing the exercise, a more pronounced improvement in the level of postural stability was observed in group E.     

Futurelessness,migration, or a lucky break: narrative tropes of the ‘blocked future’ among Serbian high school students

ABSTRACT

This article uses ethnographic discourse analysis to understand how Serbian high school students at ‘Belgrade Professional’ (BP) respond to coursework and discussions about their individual futures. Contextualizing the conversations at BP within broader local and international social forces, the paper shows how students’ perceptions of their future chances are mediated by both the school’s outdated promises of secure skilled employment and a broad understanding of Western liberal democracies as ‘meritocratic’. In short, I argue that BP students recognize the elective ‘choice biography’ as a real pathway to adulthood. However, they primarily imagine the choice biography as existing outside of Serbia, while feeling constrained by – even hostile to – such an idea within the country. To counter choice biography framings of futures in Serbia, students mobilize a discourse I call the ‘blocked future’, comprised of three related narrative tropes informed by the decades-long recession: domestic futurelessness, meritocracy abroad, and local chance. These narrative tropes illuminate the emerging cultural structures in Serbia which reflect how people cope with and processes the conflicting structural demands and unfulfilled promises of the post-socialist transition in everyday life.     

What’s off-centre of empire? Introduction to the special issue

ABSTRACT

In this Introduction, we discuss the aims of this publication along with guidelines to locate and connect the essays part of the edited volume. We start by highlighting the original contribution of our intervention in terms of what off-centring empire offers in relation to scholarship that de-centres empire. To us, this means to look at the processes, dynamics, and movements that connect empire (as a centre of power) to its peripheries (as a site of difference, struggles, and resistance). To be sure, attempts to off-centre and de-centre empire are related, relational, and they both commit to the project of challenging the centrality of empire, to confronting its lasting legacies and normative powers. Yet to off-centre, as we argue, is to focus on the electrifying force-field generated by the poles of imperial power, rather than oppose centre and peripheries to subvert their relationship. Our aim is to reveal the complex ways centre and periphery connect and distance with the aim to highlight emerging modes of counter-imperial practice. Further, this introduction serves as the opportunity to discuss the structure of the SI and its three main sections – Public Memory, Orientations, and More-than-human. Here we reflect upon how each essay brings to the fore a unique way to off-centre empire, and thus provide examples that may inspire future research. Finally, we highlight how conversations emerging from individual essays can be assembled and read into threads, pointing to multiple ways in which we seek to off-centre empire through empirical research.