From the employment office to the social welfare office: Social assistance recipiency among first-time unemployed in Sweden

Social assistance receipt among first-time unemployed in Sweden is investigated by analysing data files obtained by merging register data from the city of Goteborg. First-time unemployed males were observed during 1993 and 1994 and were followed in the register of social assistance recipients for 18 months after the debut. Many of the newly unemployed had no access to unemployment compensation. Slightly more than one out of five newly unemployed became social assistance recipients. Lengthy periods of unemployment combined with no access to unemployment compensation signify a high risk of becoming a social assistance recipient. This risk varies a great deal with age, citizenship, human capital and job search activity of the unemployed.     

A new modified Jackknifed estimator for the Poisson regression model

The Poisson regression is very popular in applied researches when analyzing the count data. However, multicollinearity problem arises for the Poisson regression model when the independent variables are highly intercorrelated. Shrinkage estimator is a commonly applied solution to the general problem caused by multicollinearity. Recently, the ridge regression (RR) estimators and some methods for estimating the ridge parameter k in the Poisson regression have been proposed. It has been found that some estimators are better than the commonly used maximum-likelihood (ML) estimator and some other RR estimators. In this study, the modified Jackknifed Poisson ridge regression (MJPR) estimator is proposed to remedy the multicollinearity. A simulation study and a real data example are provided to evaluate the performance of estimators. Both mean-squared error and the percentage relative error are considered as the performance criteria. The simulation study and the real data example results show that the proposed MJPR method outperforms the Poisson ridge regression, Jackknifed Poisson ridge regression and the ML in all of the different situations evaluated in this paper.     

The International from the perspectives of Gezi Protestors

Gezi Protests that started in Istanbul and spilled over to other cities in the Spring of 2013 has been regarded as an important episode of Turkish politics in the 21^st century. Although it happened in congruous with protests movements in different localities in the world as well as significant transformations in Turkey's foreign policy, the question of the influence of the international in these protests has been largely unexplored. This paper presents the empirical findings of a fieldwork on Gezi Protests, asking the following questions: What was the perception of the actors on the neighbouring as well as geographically distant uprisings that were congruous in time? How do they perceive the roles of domestic and international politics in shaping the agenda of their movements?     

Influence of Distribution of Animals between Dose Groups on Estimated Benchmark Dose and Animal Distress for Quantal Responses

Increasingly, dose‐response data are being evaluated with the benchmark dose (BMD) approach rather than by the less precise no‐observed‐adverse‐effect‐level (NOAEL) approach. However, the basis for designing animal experiments, using equally sized dose groups, is still primed for the NOAEL approach. The major objective here was to assess the impact of using dose groups of unequal size on both the quality of the BMD and overall animal distress. We examined study designs with a total number of 200 animals distributed in four dose groups employing quantal data generated by Monte Carlo simulations. Placing more animals at doses close to the targeted BMD provided an estimate of BMD that was slightly better than the standard design with equally sized dose groups. In situations involving a clear dose‐response, this translates into fewer animals receiving high doses and thus less overall animal distress. Accordingly, in connection with risk and safety assessment, animal distress can potentially be reduced by distributing the animals appropriately between dose groups without decreasing the quality of the information obtained.     

Being Relaxed and Powerful: Children’s Lived Experiences of Coping with Stress

Our aim was to describe and develop an understanding of children’s lived experiences of coping with stress. Twenty‐three Swedish children, ages 10–12, wrote open letters and were interviewed. The phenomenological analysis resulted in three main themes: (i) depending on oneself, others and the world around, (ii) choosing to be a doer and (iii) being in the here and now. We understood the children’s lived experiences of coping with stress as them being relaxed and powerful. The children chose to be active doers or inactive beings and their relationships, as well as their surroundings, helped or hindered their coping. Possible health promotion work is discussed.     

Marginally restricted D-optimal designs for correlated observations

Two practical degrees of complexity may arise when designing an experiment for a model of a real life case. First, some explanatory variables may not be under the control of the practitioner. Secondly, the responses may be correlated. In this paper three real life cases in this situation are considered. Different covariance structures are studied and some designs are computed adapting the theory of marginally restricted designs for correlated observations. An exchange algorithm given by Brimkulov's algorithm is also adapted to marginally restricted D–optimality and it is applied to a complex situation.     

Perspective‐taking and gift‐giving in Chinese preschool children

This study explored Chinese preschool children's perspective‐taking via a gift‐giving paradigm. Unlike findings with North American children (Atance et al. in, Dev Psychol 46:1505–1513, 2010), the results from two experiments (N_{Exp. 1} = 329; N_{Exp. 2} = 112) showed that allowing Chinese children to first choose a desired object for themselves did not enhance their subsequent perspective‐taking performance in gift selection or gift justifications. This was true regardless of gift type (consumable or recreational items) or of recipient (mom, teacher, experimenter, or friend). In addition, children's perspective‐taking did not correlate with their performances in behavioral inhibition and delay of gratification tasks. These results suggest the possibility that the prior desire fulfillment effect varies with children's socio‐cultural experiences. Finally, Chinese children showed better perspective‐taking in choosing consumable gifts (e.g., drinks, snacks) than recreational gifts (e.g., toys, magazines), although this effect was not found for gift selection in Experiment 2. One interpretation of these results is that children's capacity for prosocial perspective‐taking is influenced by socio‐cultural experiences and social knowledge about individuals' preferences for different kinds of objects.     

Minimum Cost Edge Subset Covering Exactly k Vertices of a Graph

Given a graph G with nonnegative edge costs and an integer k, we consider the problem of finding an edge subset S of minimum total cost with respect to the constraint that S covers exactly k vertices of G. An O(n ³) algorithm is presented where n is the order of G. It is based on the author's previous paper dealing with a similar problem asking S to cover at least k vertices.     

Approximation hardness of edge dominating set problems

We provide the first interesting explicit lower bounds on efficient approximability for two closely related optimization problems in graphs, MINIMUM EDGE DOMINATING SET and MINIMUM MAXIMAL MATCHING. We show that it is NP-hard to approximate the solution of both problems to within any constant factor smaller than . The result extends with negligible loss to bounded degree graphs and to everywhere dense graphs. An extended abstract of this paper was accepted at the 14th Annual International Symposium on Algorithms and Computation, ISAAC 2003.