Karen Khachatryan

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Column stores are becoming popular with data analytics in modern enterprises. However, traditionally, database vendors offer column stores as a different database product all together. As a result there is an all-or-none situation for column store features. To bridge the gap, a recent effort introduced column store functionality in SQL server (a row store)(More)
A facile and environmentally friendly method of the preparation of silver nanoparticles embedded in hyaluronan (Hyal/Ag) and hyaluronan-lecithin (Hyal-L/Ag) matrix was developed. Thin, elastic foils were prepared from gels by an in situ synthesis of Ag in an aqueous solution of sodium hyaluronate (Hyal), using aq. d-(+)-xylose solution as a reducing agent.(More)
Environmentally friendly method of the preparation of dialdehyde starch (DAS) based composites containing nanosilver (DAS/Ag) and nanogold (DAS/Au) as reducing and protecting agents was developed. UV-vis spectroscopy, transmission electron microscopy (TEM) and X-ray diffraction (XRD) confirmed formation of about 10nm ball shaped Ag and Au nanoparticles(More)
The lipolytic activity of adipose tissue (LAAT), the concentration of nonesterified fatty acids (NEFA) in the blood and adipose tissue, and the concentrations of ketone bodies and β-lipoproteins in the blood of dogs were determined after lethal exsanguination and in the post-resuscitation period. During agony activation of lipolysis was found in the adipose(More)
This study explores whether market competition between firms owned and run by managers favors overconfident managers. We study this question in a linear duopoly setting with differentiated products. The main result is that when there is complete information about the competitor’s type, evolutionary market selection forces will always favor a positive degree(More)
We consider a committee, board, group or jury that faces a binary collective decision under uncertainty. Each member holds some private information and all members agree about what decision should be taken in each state of nature. However, the state is unknown and members may differ in their valuations of the two types of mistake that may occur, and/or in(More)
We consider a committee facing a binary decision under uncertainty. Each member holds some private information. Members may have different preferences and initial beliefs, but they all agree which decision should be taken in each of the two states of the world. We characterize the optimal anonymous and deterministic voting rule and provide a homogeneity(More)
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