We demonstrate energy exchange between two orthogonally polarized optical waves as a consequence of a two-color multistep parametric interaction. The energy exchange results from cascading of two quasi-phase-matched (QPM) second-harmonic parametric processes, and it is intrinsically instantaneous. The effect is observed when both the type-I (ooe) second-harmonic generation process and higher QP...

BACKGROUND The objective of this study was to examine the cross-cultural differences of the PANSS across six geo-cultural regions. The specific aims are (1) to examine measurement properties of the PANSS; and (2) to examine how each of the 30 items function across geo-cultural regions. METHODS Data was obtained for 1,169 raters from 6 different regions: Eastern Asia (n = 202), India (n = 185)...

I EEE is actively involved in creating standards for voting systems and related applications via the IEEE Voting System Standards Committee (VSSC/1622). An upcoming VSSC/1622.2 standard on election results reporting lets election officials organize election results and report them to the media. Another goal of VSSC/1622 is to improve US voting processes by creating a common data format (CDF) fo...

In the first part of this century, there was little advancement in horse nutrition and little research was undertaken. However, in the last few years, there has been a great increase in interest in this whole area. This review surveys some of the more recent developments and how they have influenced feeding practices and also compares these with those feeding practices found at the start of thi...

Article history:Accepted 19 February 2010

The economic impact of extending the Common Agricultural Policy (CAP) to the Central and Eastern European countries has become a major issue in the European enlargement debate. This paper addresses this issue by providing an assessment of the economy-wide effects of European enlargement using a global general equilibrium model where special attention is given to modelling the instruments of the...

INTRODUCTION Antiretroviral therapy (ART) substantially improves the health of people living with HIV and contributes to preventing new infections. While HIV incidence is decreasing in most regions, the epidemic in eastern Europe continues to rise, as new infections currently outnumber the rate of ART initiation. In this study, we assess ART use in Armenia and its impact on the number of AIDS d...