On the detection of changes in autoregressive time series I. Asymptotics

Various test statistics are discussed which can be used for detecting changes in the parameters of an autoregressive time series. In this first part of our study, the limiting behavior of the test statistics is derived under the null hypothesis of no change as well as under alternatives. In a forthcoming second part of our investigation, these asymptotic results will be compared to some corresponding bootstrap procedures, and a small simulation study will be conducted.     

Public Debt Sustainability in Africa: Building Resilience and Challenges Ahead

The increased access of African countries to international capital markets has put public debt sustainability at the forefront of the continent's policy agenda. Utilising the ‘stabilising primary‐balance’ approach, this article finds that the actual primary balances exceeded those required to keep public debt at the 2007 level in about half the countries studied, and in several cases, those needed to reduce public debt‐to‐GDP to sustainable thresholds. The interest rate‐growth differential (IRGD) drove sustainability, underscoring the importance of growth and borrowing for growth‐enhancing outlays. As the IRGDs are likely to narrow over the longer term, fiscal policies will need to play a greater role.     

“I Don’t Want to Work in Agriculture!” The Transition from Agricultural Education to the Labor Market in Rural Russia

In Russia, the shift in career incentives from agriculture‐related jobs to other sectors, even among agriculturally educated students, presents two main challenges to rural labor markets. The first relates to the shortage of agricultural employees. The second concerns difficulties in the school‐to‐work transition, characterized by long periods of unemployment. This article addresses these challenges by studying the career incentives of postsecondary agriculturally educated students, based on data from the Altai region, Siberia (N = 474). We use a logit regression to predict the probability of career transition, given the incentives. We examine whether familial background and life expectations are associated with plans to pursue a career in agriculture within a life course context. The results show that students’ career plans with respect to agriculture vary according to both sociofamilial background and views about one’s life course.     

From Women's Struggles to Distorted Emancipation

This article develops a critical analysis of transformations of the idea and practice of women's emancipation in late-modern western society under the influence of globalizing advanced capitalism. It builds on analyses of feminist critical theory and critical globalization studies and argues that global capitalism initiates processes in which the practice of emancipation is distorted. Distorted emancipation refers to the social consequences of the marketization and commodification of areas of social life that were previously excluded from market relationships. Care practices, which have been a fundamental issue in women's emancipatory struggles, are used as a reference point. The article argues that even if commodification creates certain possibilities for financial rewards of care, it institutionalizes a double misrecognition of care as both nonproductive work and paid work that cannot be a source of social recognition. Furthermore, distorted emancipation makes positive moments of changing gender patterns available only for some groups of women in socioeconomically, geopolitically or culturally privileged positions. These positive moments are dependent on transnational care practices, which are understood as a manifestation of distorted emancipation.     

The impact of parenting style on fear of crime among adolescent girls and boys

Research on adolescent fear of crime is still relatively limited and often simply applies theoretical explanations proposed for adults. This study strives to extend current knowledge in this field by analyzing the impact of parenting style on fear of crime, namely parental attachment, parental supervision, and parental support of adolescent autonomy, while also considering possible gender differences. Using data from a self-report survey of approximately 1500 Czech adolescents, a hierarchical regression analysis is employed to examine these relationships while controlling for socio-demographic variables, environmental disorder, leisure time indicators, as well as victimization experience. The results suggest that higher parental supervision and lower parental support of adolescent autonomy are associated with increased fear of crime among adolescents. In addition, a gender-specific effect is found for parental attachment which somewhat decreases fear of crime for boys and increases it for girls. Nevertheless, the overall impact of parental indicators on fear of crime is relatively low. The implications and limitations of these findings are discussed.     

Determinants of Bank Performance in Transition Countries: A Data Envelopment Analysis

We analyze what drives bank efficiency in the transition countries of Central Europe and compare the results with those for the United States. This paper is one of the few that use data envelopment analysis for the computation of efficiency scores in transition countries, and, to our knowledge, it is the first to explore systematically how different specifications of data envelopment analysis affect the results. Our findings corroborate the common wisdom that foreign-owned banks operating in transition countries are more efficient than domestic banks. While in the United States large banks are in general more efficient, the result for transition countries depends on the design of data envelopment analysis.     

Flora of the tram tracks of Bratislava

Urban Ecosystems - Tram and railway tracks represent specific urban habitats, which host a specific type of flora. This study aims to compile the information about species composition of flora of...     

On Testing Changes in Autoregressive Parameters of a VAR Model

The article deals with the problem of testing a change in autoregressive matrices of the p-th order vector autoregressive process, VAR(p). The proposed test statistics are based on the likelihood ratio concept and are studied under the null hypothesis of no change in parameters. Their asymptotic behavior is derived under minimal moment assumptions in both cases where the time point of possible change is known a priori and is undefined. The Gumbel-type approximation of the test statistic is also developed, which previous papers on VAR(p) models do not cover.     

Bank Efficiency in Transitional Countries: Sensitivity to Stochastic Frontier Design

This article provides an empirical insight on the heterogeneity in the estimates of banking efficiency produced by the stochastic frontier approach. Using data from five countries of Central and Eastern Europe, we study the sensitivity of the efficiency score and the efficiency ranking to a change in the design of the frontier. We found that the average scores are significantly smaller when the transcendental logarithmic functional form is used in the profit efficiency measurement and when the scaling effect is neglected in the cost efficiency measurement. The implied bank ranking is robust to changes in the stochastic frontier definition for cost efficiency, but not for profit efficiency.