Publications by authors named "O G Doruk"

This article examines the relationship between electricity consumption and the stock market in the Turkish economy during the COVID-19 pandemic. A novel high-frequency model is used, incorporating the hourly energy consumption and Borsa Istanbul (BIST) National stock market index variables. To determine the effect of electricity consumption on the stock market index and vice versa, a high-frequency VAR-based spillover approach, time-varying Granger causality, and time-varying Bayesian VAR analysis are employed.

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Background: In COVID-19 patients, besides changes in leucocyte count, morphological abnormalities of circulating blood cells have been reported.

Aim: This study aims to investigate the relationship between the morphological and functional properties of leucocytes and the severity of the disease in COVID-19 patients.

Materials And Methods: Blood samples were collected from COVID-19 patients (n = 130) at the time of admission.

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Objective: The present study examines the effect of fiscal policies on firm survival for small-and-medium-sized enterprises in the cross-country level firm-level data.

Research Design: A propensity score matching analysis is utilised for the post-COVID-19 period firms by using the World Bank Enterprise Follow-up Surveys for the pandemic period. Small-and-medium-sized enterprises are essential to the economy; firm failures can increase in a pandemic.

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Background And Objectives: In this study, the performance of three different commercial antibody assays for COVID-19 was examined and parameters affecting the antibody response were investigated. The correlation of patients' chest CT results, procalcitonin, CRP, and D-dimer levels with the antibody response were retrospectively evaluated.

Materials And Methods: COVID-19 antibodies were detected by three commercially available assays in each patient.

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In the present study, we examine the effect of government fiscal policy on firm risk in the post-COVID-19 period for an emerging market: Turkey. By doing so, we utilize a propensity score matching method to examine the effect of the short-term working allowance, which is a unique short-term COVID-19 mitigation policy for the Turkish economy, on firm risk. The obtained findings show that the effect of short-term working allowances on firm risk is efficient at mitigating the effect of COVID-19.

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