The purpose of this prospective randomised clinical study was to compare the efficacy of recombinant bone morphogenetic protein 7 (rhBMP-7) and platelet-rich plasma (PRP) as bone-stimulating agents in the treatment of persistent fracture non-unions. One hundred and twenty patients were randomised into two treatment groups (group rhBMP-7 vs. group PRP). Sixty patients with sixty fracture non-uni...

This paper is concerned with finite unions of ideals and modules. The first main result is that if N ⊆ N1 ∪N2 ∪ · · · ∪Ns is a covering of a module N by submodules Ni, such that all but two of the Ni are intersections of strongly irreducible modules, then N ⊆ Nk for some k. The special case when N is a multiplication module is considered. The second main result generalizes earlier results on co...

We study the subsidization of extra jobs in a general equilibrium framework. While the previous literature focuses on symmetric marginal employment subsidies where firms are rewarded when they increase employment but punished when they reduce their workforce, we consider an asymmetric scheme that only rewards employment expansion. This changes the incidence substantially. In the asymmetric case...

The success of economic policies in the Netherlands with regard to enhancing job growth and bringing down unemployment has attracted international attention, especially against the background of persistent high unemployment in many continental European countries. The paper considers the role of Dutch industrial relations, and in particular trade unions, in the turnaround from the ‘Dutch disease...

32 Federal Reserve Bank of Atlanta E C O N O M I C R E V I E W Third Quarter 1998 The ensuing debate about limits of credit union membership has extended, quite naturally, to credit union tax status (see, for example, Bickley 1997; McConnell 1998; Robinson 1998). Meanwhile, the U.S. House of Representatives and Senate have overwhelmingly passed and the President has signed a bill that would sub...

Provincial government pay equity policies require the negotiation of pay equity in unionized workplaces. The methodology is complex and unions have to be knowledgeable and committed to rectifying discriminatory wages. According to the literature, Canadian unions have shown varied levels of effectiveness regarding their pursuit of women’s equality, and this article explores how well these unions...

In a work of Just, Miller, Scheepers and Szeptycki it was asked whether certain diagonalization properties for sequences of open covers are provably closed under taking finite or countable unions. In a recent work, Scheepers proved that one of the properties in question is closed under taking countable unions. After surveying the known results, we show that none of the remaining classes is prov...