This paper considers identification and estimation of structural interaction effects in a social interaction model. The model allows unobservables in the group structure, which may be correlated with included regressors. We show that both the endogenous and exogenous interaction effects can be identified if there are sufficient variations in group sizes. We consider the estimation of the model ...

Based on a relationship between price difference and demand difference among locations, the role of various market frictions in causing segmentation of the Russian goods market is analyzed. The spatial sample covers most of Russian regions (70 of all the 89); the data are yearly, spanning 1992 through 2000. Spatial disconnectedness of regions is found to be responsible for about 70 percent of a...

We report here the in vitro selection of DNA aptamers for electric eel acetylcholinesterase (AChE). One selected aptamer sequence (R15/19) has a high affinity towards the enzyme (Kd=157±42 pM). Characterization of the aptamer showed its binding is not affected by low ionic strength (~20 mM), however significant reduction in affinity occurred at high ionic strength (~1.2 M). In addition, this ap...

BACKGROUND The purpose of this case series is to investigate the relationship between splenic thickness (ST) and postoperative outcomes after hepatic resection in hepatitis B virus (HBV)-associated hepatocellular carcinoma (HCC) patients. METHODS The clinical data of 320 patients with HBV-associated HCC who had undergone liver resection were retrospectively analyzed. The value of ST in predic...

(1) Background: This study aimed to correlate the indocyanine green clearance (ICG) test with histopathological grades of liver fibrosis and cirrhosis assess its diagnostic accuracy in differentiating normal parenchyma from cirrhosis. (2) Methods: A total 82 patients who received a examination, imaging, ICG within three months were included this retrospective study. The level was graded using I...

A Pénzügyi Akciócsoport pénzmosással és terrorizmusfinanszírozással összefüggő országvizsgálat alapján leminősítette Magyarország R15-ajánlásnak (új technológiák alkalmazása) való megfelelését. Ezzel párhuzamosan a Magyar Nemzeti Bank 2020–2021 között számos, Magyarországon működő kereskedelmi bank esetében állapított meg bírságot pénzmosás terrorizmusfinanszírozás megelőzésével kapcsolatos hiá...

In this study, we tried to improve the performance by giving a pre-swirling flow radial inflow that occurred in semi-opened axial fan. addition, fields of rotor outlet were clarified experimentally, and effect was considered. The experiment carried out using test wind tunnel with square cross section 880 mm. Three types casings prepared, which blade tip protruded 0%, 20%, 40% meridional chord l...