Two soybean breeding lines (D82-2397A and J82-190) resistant to Heterodera glycines race 5 produced higher yields (P = 0.05) than the race 4-resistant cultivar Bedford for 2 years when planted in a field infested with H. glycines race 5 at Tiptonville, Tennessee. Yields were not different between D82-2397A and Bedford when planted in fields infested with race 3, race 9, or with no cyst nematode...

Half-arc-transitive graphs are a fascinating topic which connects graph theory, Riemann surfaces and group theory. Although fruitful results have been obtained over the last half century, it is still challenging to construct half-arc-transitive with prescribed vertex stabilizers. Until recently, there only six known connected tetravalent nonabelian stabilizers, question whether exists stabilize...

In recent years there has been a growing interest in macro models with heterogeneity in information and complementarity in actions. These models deliver promising positive properties, such as heightened inertia and volatility. But they also raise important normative questions, such as whether the heightened inertia and volatility are socially undesirable, whether there is room for policies that...

This paper studies the effects of unemployment policies in a simple static general equilibrium model with adverse selection in the labor market. Firms offer a contract that induces the selfselection of workers. In equilibrium, all unskilled workers are screened out and some skilled workers are rationed out. It is shown that the provision of unemployment insurance (UI) raises involuntary unemplo...

Article history: Received 20 June 2007 Available online 31 July 2010 JEL classification: C70 D82

Article history: Received 4 April 2013 Available online 27 November 2013 JEL classification: C70 D82

Article history: Received 24 February 2010 Available online 5 March 2012 JEL classification: C73 D82 L14 J30

Article history: Received 10 August 2011 Available online 13 April 2014 JEL classification: C72 C91 D62 D82 D83

Article history: Received 9 October 2011 Available online 3 May 2013 JEL classification: C72 D71 D82

Article history: Received 9 January 2009 Available online 15 May 2010 JEL classification: C79 D82