This paper analyses the scope for collusive behaviour within the context of an international duopoly supergame in which both firms and monopoly labour unions interact strategically. We find that the presence of unions, implying an endogenisation of production costs, dramatically alters the incentives for inter-firm collusion. There are, however, strong incentives for the unions to collude, rais...

This note provides conditions under which the union of three well-founded binary relations is also well-founded. This note concerns conditions under which the union of several wellfounded (binary) relations is also well-founded.1 To garner insight, we tackle just three relations, A, B, and C, over some underlying set V . Let {A|B} denote A ∪ B, and so on for other unions of relations. And let j...

PURPOSE To compare various treatment modalities (plating, Ilizarov external fixation, and non-vascular fibular cortical strut grafting) for non-union of humeral shaft fractures. METHODS Records of 9 women and 26 men aged 24 to 71 (mean, 42) years who presented with non-union of humeral shaft fractures were reviewed. The humeral shaft fractures were secondary to low-energy trauma (n=22) or veh...

Noting the trend toward more independent trade unions in developing countries, this article examines whether the presence of unions strengthens or weakens the benefits to be gained from economic policy reform. We show that the presence of “passive” unions—ones that choose their wage-employment contract given the firm’s cost-minimizing strategy—increases the welfare gains from trade liberalizati...

— We study subsets of Grassmann varieties G(l, m) over a field F , such that these subsets are unions of Schubert cycles, with respect to a fixed flag. We study such sets in detail, and give applications to coding theory, in particular for Grassmann codes. For l = 2 much is known about such Schubert unions with a maximal number of Fq-rational points for a given spanning dimension. We study the ...

This paper presents the prediction-preserving reducibility with membership queries (pwm-reducibility) on formal languages, in particular, simple CFGs and finite unions of regular pattern languages. For the former, we mainly show that DNF formulas are pwm-reducible to CFGs that is sequential or that contains at most one nonterminal. For the latter, we show that both bounded finite unions of regu...

Background and Objective: Consanguinity increases the incidence of genetic disorders. The frequency of consanguinity varies in different societies. There was no data regarding the frequency of consanguinity in Zanjan province. This study aimed to describe the prevalence of consanguineous unions in the parents of children with genetic disorders and its related factors in Zanjan, Iran. Materials...

  Background: The purpose of this study was to determine whether Multi-Detector Computed Tomography (MDCT) in addition to plain radiographs influences radiologists’ and orthopedic surgeons’ diagnosis and treatment plans for delayed unions and non-unions.   Methods: A retrospective database of 32 non-unions was reviewed by 20 observers. On a scale of 1 to 5, observers rated on X-Ray and a...

Recent approaches in the research on inconsistent databases have started analyzing the first-order reducibility of consistent query answering, i.e., the possibility of identifying classes of queries whose consistent answers can be obtained by a first-order (FOL) rewriting of the query, which in turn can be easily formulated in SQL and directly evaluated through any relational DBMS. So far, the ...