Theologos Dergiades

ORCID: 0000-0003-3294-7787
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About
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Research Areas
  • Monetary Policy and Economic Impact
  • Market Dynamics and Volatility
  • Financial Markets and Investment Strategies
  • Energy, Environment, and Transportation Policies
  • COVID-19 Pandemic Impacts
  • Fiscal Policy and Economic Growth
  • Energy, Environment, Economic Growth
  • COVID-19 epidemiological studies
  • Housing Market and Economics
  • Digital Marketing and Social Media
  • Economic Policies and Impacts
  • Higher Education Research Studies
  • Complex Systems and Time Series Analysis
  • Stock Market Forecasting Methods
  • Agricultural risk and resilience
  • Economic theories and models
  • Credit Risk and Financial Regulations
  • Taxation and Compliance Studies
  • Diverse Aspects of Tourism Research
  • Economic Growth and Productivity
  • Global Energy and Sustainability Research
  • Corporate Finance and Governance
  • Media Influence and Politics
  • Economic Theory and Policy
  • Innovation Diffusion and Forecasting

University of Macedonia
2013-2025

International Hellenic University
2011-2019

Cyprus University of Technology
2011

This paper assesses the quantitative impact of government interventions on deaths related to first COVID-19 outbreak. Using daily data for 32 countries and relying stringency conducted policies, we find that greater strength at an early stage , more effective these are in slowing down or reversing growth rate deaths. School closures have a significant reducing deaths, which is less powerful compared case where number policy combined together. These results can be informative governments...

10.1371/journal.pgph.0000242 article EN cc-by PLOS Global Public Health 2022-04-13

We examine whether the information contained in social media (Twitter, Facebook, and Google blogs) web search intensity (Google) influences financial markets. Using a multivariate system focussing on Eurozone's peripheral countries, GIIPS (Greece, Ireland, Italy, Portugal, Spain) as well two of core countries (France Nethelands), we show that discussion search-related queries for Greek debt crisis provide significant short-run primarily Greek-German Irish-German government bond yield...

10.1093/oep/gpu046 article EN Oxford Economic Papers 2014-12-12

This paper assesses the quantitative impact of government interventions on deaths related tothe first COVID-19 outbreak. Using daily data for 32 countries and relying stringencyof conducted policies, we find that greater strength atan early stage, more effective these are in slowing down or reversing growth rate ofdeaths. School closures have a significant reducing deaths, whichis less powerful compared to case where number policy combinedtogether. These results can be informative...

10.2139/ssrn.3602004 article EN SSRN Electronic Journal 2020-01-01

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10.2139/ssrn.2236278 article EN SSRN Electronic Journal 2012-01-01

Abstract We compare news in Twitter with traditional outlets and emphasize their differential impact on Eurozone's sovereign bond market. reveal a two‐way information flow between Twitter's “Grexit” tweets mentions which suggests not only that both types of serve as important empirical predictors for the market but also “old” (traditional news) “new” (Twitter) media are connected; however, influence is stronger. Grexit raise Greek spread more than news. Weak contagion effects reported...

10.1111/jmcb.12805 article EN cc-by Journal of money credit and banking 2021-05-07

Abstract Current literature assumes that non-pharmaceutical interventions (NPIs) reduce COVID-19 infections uniformly, is, irrespectively of their strength. The role economic support measures (ESM) in controlling the virus is also overlooked. Using a panel threshold model cases US states, we identify three distinct regimes ‘low’, ‘medium’, and ‘high’ severity interventions; latter being more effective towards reducing growth. ESM increase efficacy NPIs through behavioural channel lowers...

10.1093/oep/gpac031 article EN cc-by Oxford Economic Papers 2022-07-21

ABSTRACT In this paper, we develop a new and at the same time simple method of obtaining measure rate capacity utilization (CU) which makes use structural vector autoregression (SVAR) system equation estimating technique with long‐run restrictions. The CU that derive for each 14 EU countries replicates to great extent European Commission's Directorate General Economic Financial Affairs (ECFIN) measure. On closer examination find in‐sample explanatory content respect inflation SVAR exceeds...

10.1111/j.0307-3378.2007.00263.x article EN Bulletin of Economic Research 2007-09-18

In this article we try to model the adoption pattern of mobile telecommunication services into Greek market for period 1993 2005. Two separate sigmoid curves, Gompertz and Logistic, are fitted observed number subscribers by means nonlinear least squares. Our empirical results reached three conclusions. First, introduction pre-paid telephony in 1997 along with entry third operator 1998 has boosted diffusion process Greece; second, levelling-off phones already begun; third, average expected...

10.1080/13504850903373258 article EN Applied Economics Letters 2010-05-28

Abstract In this study we are using degree grades to assess academic performance in a Greek university focusing on social studies. Apart from the usual covariates of achievement encountered international literature, our estimation model is adjusted take into account institutional framework governing studies Greece. context, duration studies, measured additional years over normal programme explains variability results; revealed association negative. This finding raises more questions than it...

10.1080/09500790903071944 article EN Evaluation & Research in Education 2009-03-01

The Just-In-Time (JIT) technique is a difficult and, in many cases, complex task to be implemented any type of organisation, since synchronisation different activities the supply chain required. Investments logistics information systems are imperative. This paper presents theoretical framework JIT and then explores Greek business reality through responses managers survey conducted SMEs located throughout country. factors that considered important making decision adopt such investigated....

10.1504/ijlsm.2007.012998 article EN International Journal of Logistics Systems and Management 2007-01-01
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