Factor Endowments and Production in European Regions

This paper analyses patterns of production across 14 industries in 45 regions from 7 European countries since 1975. We estimate a structural equation derived directly from Heckscher-Ohlin theory that relates an industry's share of a region's GDP to factor endowments and relative prices. Factor endowments are found to play a statistically significant and quantitatively important role in explaining production patterns. The explanation is most successful for aggregate industries, such as Agriculture, Manufacturing, and Services, and works less well for disaggregated industries within Manufacturing. We find no evidence that increasing European integration has weakened the relationship between factor endowments and production patterns within countries.Factor Endowments, Heckscher-Ohlin, specialization, European integration

Co-employment of permanently and temporarily employed agents

One-shot interaction and repeated interaction often co-exist in the real world. We study possible behavioral effects of this co-existence in a principal-agent setting, in which a principal simultaneously employs a permanent and a temporary agent. Our experimental results indicate that there is "discrimination" between the two agents and that the available information for agents determines the extent of this discrimination, even though the theoretical solution of the game implies equal treatment of agents. Discrimination is, thus, a consequence of reciprocity. Agents that are discriminated against react negatively by withholding effort.principal-agent problem, permanent and temporary employment, fairness, wage discrimination

NLO corrections to the gluon induced forward jet vertex from the high energy effective action

We determine both real and virtual next-to-leading order corrections to the gluon induced forward jet vertex, from the high energy effective action proposed by Lipatov. For these calculations we employ the same regularization and subtraction formalism developed in our previous work on the quark-initiated vertex. We find agreement with previous results in the literature.Comment: 16 page

Two-Loop Gluon Regge Trajectory from Lipatov's Effective Action

Lipatov's high-energy effective action is a useful tool for computations in the Regge limit beyond leading order. Recently, a regularisation/subtraction prescription has been proposed that allows to apply this formalism to calculate next-to-leading order corrections in a consistent way. We illustrate this procedure with the computation of the gluon Regge trajectory at two loops.Comment: 4 pages, 5 figures, Proceedings of the XX Workshop on Deep-Inelastic Scattering and Related Subjects, 26-30 March, University of Bonn (2012

NLO Vertex for a Forward Jet plus a Rapidity Gap at High Energies

We present the calculation of the forward jet vertex associated to a rapidity gap (coupling of a hard pomeron to the jet) in the BFKL formalism at next-to-leading order (NLO). Real emission contributions are computed via Lipatov's effective action. The NLO jet vertex turns out to be finite within collinear factorization and allows, together with the NLO non-forward gluon Green's function, to perform NLO studies of jet production in diffractive events (e.g. Mueller-Tang dijets).Comment: 4 pages, Proceedings of DIFFRACTION 2014 (Primo\v{s}ten, Croatia, September 2014

The Gluon-Induced Mueller-Tang Jet Impact Factor at Next-to-Leading Order

We complete the computation of the Mueller-Tang jet impact factor at next-to-leading order (NLO) initiated in arXiv:1406.5625 and presented in arXiv:1404.2937 by computing the real corrections associated to gluons in the initial state making use of Lipatov's effective action. NLO corrections for this effective vertex are an important ingredient for a reliable description of large rapidity gap phenomenology within the BFKL approach.Comment: 32 pages, many figure