Tax Competition regarding Foreign Direct Investment between Transition European Countries

This paper explores the fiscal measures adopted in the transition European countries in order to encourage the foreign direct investment. There were analysed six countries: Albania, Macedonia, Moldova, Russian Federation, Union of Serbia and Muntenegro, Ukraine, based on the four criteria: corporate and capital gains tax rates, withholding taxes, tax incentives, foreign tax relief and transfer pricing rules. Finally, the conclusion is that all the analysed countries offer favourable fiscal conditions for the foreign direct investment. Serbia, Muntenegro, Macedonia and Moldova have attractive fiscal regimes, showing that the authorities from these countries count on the foreign direct investment as a solution of solving the social and economic problems.foreign direct investment, business environment, tax competion, transition European countries

Path counting and random matrix theory

We establish three identities involving Dyck paths and alternating Motzkin paths, whose proofs are based on variants of the same bijection. We interpret these identities in terms of closed random walks on the halfline. We explain how these identities arise from combinatorial interpretations of certain properties of the $\beta$-Hermite and $\beta$-Laguerre ensembles of random matrix theory. We conclude by presenting two other identities obtained in the same way, for which finding combinatorial proofs is an open problem.Comment: 14 pages, 13 figures and diagrams; submitted to the Electronic Journal of Combinatoric

External debt management in Romania

This paper approaches the evolution of Romania’s foreign debt in three periods of time: during Nicolae Ceausescu regime, in the transition period and the one which followed the adhesion to European Union. For all three periods the external debt management had to deal with different circumstances: the sharp increase of real interest rates from the 1980s, the lack of credibility on international financial markets from the 1990s or the recent global crisis. We conclude that political regime, the efficiency of the allocation of the borrowed funds or the international context played major roles in the external debt management.

Photodissociation of the {HeH+^+} molecular ion

The photodissociation cross section of the molecular ion HeH$^+$ was calculated within the Born-Oppenheimer approximation for a parallel, a perpendicular, and an isotropic orientation of the molecular axis with respect to the field, considering also different initial vibrational and rotational states. The results were compared to recent data from a free-electron laser experiment performed at the FLASH facility [H.B. Pedersen {\it et al.}, Phys. Rev. Lett. 98, 223202, (2007)]. Within the experimental uncertainties theoretical and experimental results are compatible with each other.Comment: 16 pages, 8 figure

Minimizing Communication for Eigenproblems and the Singular Value Decomposition

Algorithms have two costs: arithmetic and communication. The latter represents the cost of moving data, either between levels of a memory hierarchy, or between processors over a network. Communication often dominates arithmetic and represents a rapidly increasing proportion of the total cost, so we seek algorithms that minimize communication. In \cite{BDHS10} lower bounds were presented on the amount of communication required for essentially all $O(n^3)$-like algorithms for linear algebra, including eigenvalue problems and the SVD. Conventional algorithms, including those currently implemented in (Sca)LAPACK, perform asymptotically more communication than these lower bounds require. In this paper we present parallel and sequential eigenvalue algorithms (for pencils, nonsymmetric matrices, and symmetric matrices) and SVD algorithms that do attain these lower bounds, and analyze their convergence and communication costs.Comment: 43 pages, 11 figure

Shocks on the Romanian foreign exchange market before and after the global crisis

This paper explores some changes induced on the Romanian foreign exchange market by the global crisis. We study these changes from the perspective of number and intensity of the shocks occurred before and after the global crisis. We found some significant differences, explainable not only by the direct effects of the crisis, but also by the intervention of the National Bank of Romania.Romanian Foreign Exchange Market, Shocks, Global Crisis, Monetary Policy, National Bank of Romania