Sambuddha Ghosh

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We study an infinite horizon game in which pairs of players connected in a network are randomly matched to bargain over a unit surplus. Players that reach agreement are replaced by new players at the same positions in the network. We prove that for each discount factor all equilibria are payoff equivalent. The equilibrium payoffs and the set of equilibrium(More)
Consider a repeated moral hazard problem involving a principal and several agents. If formal contracts are unavailable and agents observe only their own relationships, an optimal relational contract allocates business among agents depending on past performance. If rst-best is attainable, the principal favors an agent who performs well with future business,(More)
PURPOSE To compare macular thickness following uncomplicated phacoemulsification with foldable acrylic lens and manual small incision cataract surgery (MSICS) with non-foldable polymethyl methacrylate (PMMA) lens implantation. METHODS Prospective study was carried out with one eye each of 224 patients with senile cataract randomized into two groups,(More)
Vision impairment due to pathological damage of the retina can largely be prevented through periodic screening using fundus color imaging. However the challenge with large-scale screening is the inability to exhaustively detect fine blood vessels crucial to disease diagnosis. In this work we present a computational imaging framework using deep and ensemble(More)
To compare changes in posterior vitreous detachment (PVD) following intravitreal injection of bevacizumab and triamcinolone in diffuse diabetic macular edema in middle-aged type 2 diabetes patients and to correlate this change with change in central macular thickness (CMT). Design: cross sectional study. Fifteen consecutive patients treated by intravitreal(More)
BACKGROUND Association of C-reactive protein (CRP) and body mass index (BMI) with diabetic retinopathy (DR) has conflicting reports. METHOD Sixty diabetes patients each with DR (Group A), no DR (Group B) and 60 healthy volunteers (control, group C) were studied. CRP was measured. BMI was calculated. RESULT Significant difference in CRP was observed(More)
I study games of learning about a hidden state variable where (i) the hidden state is Gaussian, (ii) there is a common prior about the state’s initial value, and (iii) a long-run player can control a market’s belief by affecting a public signal. The focus is on analyzing cases in which the long-run player’s flow payoff from this manipulation is nonlinear(More)
The majority runoff system is widely used around the world, yet our understanding of its properties and of voters’ behavior is limited. In this paper, we fully characterize the set of strictly perfect voting equilibria in large three-candidate majority runoff elections. Considering all possible distributions of preference orderings and intensities, we prove(More)
This paper addresses the role of non-binding goals to attenuate time inconsistency. Agents have linear reference-dependent preferences and endogenously set a goal that is the reference point. They face an infinite horizon, optimal stopping problem in continuous time, where there exists an option value of waiting due to uncertainty. Goal-setting attenuates(More)
PURPOSE The purpose of the study was to differentiate ischemic central retinal vein occlusion (CRVO) from nonischemic CRVO during the early acute phase using plasma homocysteine as a biochemical marker. METHODS Fasting plasma homocysteine, serum vitamin B12, and folate levels were measured in 108 consecutive unilateral elderly adult (age >50 years)(More)