You can go your own way! The long‐term effectiveness of a self‐employment programme for welfare recipients in Germany

In this study, we examined the long‐term effects of supporting welfare recipients by means of a subsidy to start their own business. We used administrative data and propensity score matching to estimate the impact of the subsidy on the probability of receiving welfare benefits and on unemployment status up to 72 months after programme start. We supplemented our estimation results with the results of a qualitative survey which provided insights into the diversity of entrepreneurial activities and the recipients' motivation for starting a business. Our results are encouraging. We found a stable positive effect on the outcomes of interest. We further found that foreign nationals and the long‐term unemployed benefit the most. We conclude that the subsidy allows some people to successfully start a business who would not have otherwise done so and who would have been less successful by choosing the alternative of continued job search.     

Konfliktmoderation mit Gruppen

One professional form of conflict resolution known as ‘mediation’ has itself established globally as an accepted alternative to litigation within the past four decades—albeit most notably for dyadic conflict between two individuals. Conflicts involving a higher number of parties both within and between social groups in organizations or public communities are far more complex and much tougher to be defined than in dyadic settings. They require an expanded repertoire of intervention techniques and more advanced competencies of neutrals as—in addition to the resolution efforts—the conflicting parties’ group dynamics demands attention and participative facilitation. Moreover, this type of conflict is difficult to study. An action strategy for professional group-based conflict resolution is exemplified and contrasted to dyadic mediation of conflict. Based on the analysis, problems for future research are outlined.     

The intergenerational continuity of parental conditional regard and its role in mothers’ and adolescents’ contingent self‐esteem and depressive symptoms

Although research has documented the adverse consequences of parental academic conditional regard in different developmental periods, few studies have examined antecedents and, in particular, the possibility of intergenerational continuity of this parenting dimension. The current study aimed to identify patterns of intergenerational similarity in two types of conditional regard (i.e., positive and negative). Additionally, it examined mothers’ and adolescents’ contingent self‐esteem (CSE) and depressive symptoms as outcomes of this process. In total, 211 mothers and their 10‐ to 16‐year‐old adolescents filled out questionnaires assessing perceived conditional regard in the relationship with their own mother (i.e., grandmothers’, and mothers’ conditional positive (PACPR) and negative regard (PACNR)), contingent self‐esteem (i.e., maternal child‐invested CSE and adolescents’ academic CSE), and maternal and adolescents’ depressive symptoms. Results revealed direct intergenerational similarity for PACPR, but not for PACNR. Within generations, PACPR was related positively to CSE, which, in turn, was related positively to depressive symptoms. Moreover, PACNR was related positively to depressive symptoms. Our findings provide preliminary evidence for the intergenerational continuity of conditional regard, which has important consequences because of its relation to CSE and subsequent depressive symptoms within both generations.     

Prudent vs Pragmatic Solutions: In Defense of State Intervention Against Discrimination

This paper addresses the issue of available strategies for intervening in problems of discrimination as presented in the lead article in this Special Issue. First, it is argued here that the issue of discrimination is a moral issue and that all four models presented are ways of addressing this inherently moral issue. The question, therefore, is, Who is most likely to succeed in dealing with this issue of public morality? It is suggested here that while all four modes of intervention are necessary, they can be successful only in conjunction with the pragmatic and unequivocal intervention of the state, which (at least in principle) is not only the most justifiable summation of the public's morality but also commands the most available resources and overall mandate in dealing with public matters.

     

Close Approximations of Minimum Rectangular Coverings

We consider the problem of covering arbitrary polygons with rectangles. The rectangles must lie entirely within the polygon. (This requires that the interior angles of the polygon are all greater than or equal to 90 degrees.) We want to cover the polygon with as few rectangles as possible. This problem has an application in fabricating masks for integrated circuits.In this paper we will describe the first polynomial algorithm, guaranteeing an O(log n) approximation factor, provided that the n vertices of the input polygon are given as polynomially bounded integer coordinates. By the same technique we also obtain the first algorithm producing a covering which is within a constant factor of the optimal in exponential time (compared to the doubly-exponential known before).     

Approximation of knapsack problems with conflict and forcing graphs

We study the classical 0–1 knapsack problem with additional restrictions on pairs of items. A conflict constraint states that from a certain pair of items at most one item can be contained in a feasible solution. Reversing this condition, we obtain a forcing constraint stating that at least one of the two items must be included in the knapsack. A natural way for representing these constraints is the use of conflict (resp. forcing) graphs. By modifying a recent result of Lokstanov et al. (Proceedings of the 25th annual ACM-SIAM symposium on discrete algorithms, SODA, pp 570–581, 2014) we derive a fairly complicated FPTAS for the knapsack problem on weakly chordal conflict graphs. Next, we show that the techniques of modular decompositions and clique separators, widely used in the literature for solving the independent set problem on special graph classes, can be applied to the knapsack problem with conflict graphs. In particular, we can show that every positive approximation result for the atoms of prime graphs arising from such a decomposition carries over to the original graph. We point out a number of structural results from the literature which can be used to show the existence of an FPTAS for several graph classes characterized by the exclusion of certain induced subgraphs. Finally, a PTAS for the knapsack problem with H-minor free conflict graph is derived. This includes planar graphs and, more general, graphs of bounded genus. The PTAS is obtained by expanding a general result of Demaine et al. (Proceedings of 46th annual IEEE symposium on foundations of computer science, FOCS 2005, pp 637–646, 2005). The knapsack problem with forcing graphs can be transformed into a minimization knapsack problem with conflict graphs. It follows immediately that all our FPTAS results of the current and a previous paper carry over from conflict graphs to forcing graphs. In contrast, the forcing graph variant is already inapproximable on planar graphs.     

Contextualizing critical junctures: what post-Soviet Russia tells us about ideas and institutions

The present article asks what lessons the empirical case of institutional change in post-Soviet Russia yields for the recent research on ideas and institutions. Its main point is that in post-Soviet Russia a clash between imported foreground ideas and deep domestic background ideas led to an ideational division among the elite of the country that became a main obstacle to the provision of coherent economic reforms. This story stands in some contrast to much of the newer literature on ideas and institutions, which tends to see critical junctures as leading from one equilibrium to another. I argue that tensions between imported foreground ideas and deep domestic backgrounds are likely to occur in other cases of far-reaching processes of institutional change based on Western ideas but taking place beyond the realm of Western, industrialized countries. Therefore, I argue, some general lessons on the interplay between ideas and institutions might be drawn from this case study.     

Unternehmen erfolgreich in (die) Zukunft führen

This article of the magazine “Gruppe. Interaktion. Organisation (GIO)” shows how the digital transformation changes the understanding of leadership in a fundamental and disruptive way. It highlights different approaches for business strategies and human resource management that seem necessary to succeed within the new, digital age. The digital transformation of the Haufe Group offers a valid example and is being outlined with reference to their practical experience and to scientific research. The case of the Haufe Group indicates clearly: the digital transformation requires a profound social transformation!