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  1. Article ; Online: A Two-Phase Stochastic Dynamic Model for COVID-19 Mid-Term Policy Recommendations in Greece

    Nikolaos P. Rachaniotis / Thomas K. Dasaklis / Filippos Fotopoulos / Platon Tinios

    International Journal of Environmental Research and Public Health, Vol 18, Iss 2497, p

    A Pathway Towards Mass Vaccination

    2021  Volume 2497

    Abstract: From 7 November 2020, Greece adopted a second nationwide lockdown policy to mitigate the transmission of SARS-CoV-2 (the first took place from 23 March to 4 May 2020), just as the second wave of COVID-19 was advancing, as did other European countries. To ...

    Abstract From 7 November 2020, Greece adopted a second nationwide lockdown policy to mitigate the transmission of SARS-CoV-2 (the first took place from 23 March to 4 May 2020), just as the second wave of COVID-19 was advancing, as did other European countries. To secure the full benefits of mass vaccination, which started in early January 2021, it is of utmost importance to complement it with mid-term non-pharmaceutical interventions (NPIs). The objective was to minimize human losses and to limit social and economic costs. In this paper a two-phase stochastic dynamic network compartmental model (a pre-vaccination SEIR until 15 February 2021 and a post-vaccination SVEIR from 15 February 2021 to 30 June 2021) is developed. Three scenarios are assessed for the first phase: (a) A baseline scenario, which lifts the national lockdown and all NPIs in January 2021; (b) a “semi-lockdown” scenario with school opening, partial retail sector operation, universal mask wearing, and social distancing/teleworking in January 2021; and (c) a “rolling lockdown” scenario combining a partial lifting of measures in January 2021 followed by a third nationwide lockdown in February 2021. In the second phase three scenarios with different vaccination rates are assessed. Publicly available data along with some first results of the SHARE COVID-19 survey conducted in Greece are used as input. The results regarding the first phase indicate that the “semi-lockdown” scenario clearly outperforms the third lockdown scenario (5.7% less expected fatalities); the second phase is extremely sensitive on the availability of sufficient vaccine supplies and high vaccination rates.
    Keywords COVID-19 ; compartmental models ; stochastic dynamic network ; Medicine ; R
    Subject code 510
    Language English
    Publishing date 2021-03-01T00:00:00Z
    Publisher MDPI AG
    Document type Article ; Online
    Database BASE - Bielefeld Academic Search Engine (life sciences selection)

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  2. Article ; Online: A Systematic Literature Review of Blockchain-Enabled Supply Chain Traceability Implementations

    Thomas K. Dasaklis / Theodore G. Voutsinas / Giannis T. Tsoulfas / Fran Casino

    Sustainability, Vol 14, Iss 2439, p

    2022  Volume 2439

    Abstract: In recent years, traceability systems have been developed as practical tools for improving supply chain (SC) transparency and visibility, especially in health and safety-sensitive sectors like food and pharmaceuticals. Blockchain-related SC traceability ... ...

    Abstract In recent years, traceability systems have been developed as practical tools for improving supply chain (SC) transparency and visibility, especially in health and safety-sensitive sectors like food and pharmaceuticals. Blockchain-related SC traceability research has received significant attention during the last several years, and arguably blockchain is currently the most promising technology for providing traceability-related services in SC networks. This paper provides a systematic literature review of the various technical implementation aspects of blockchain-enabled SC traceability systems. We apply different drivers for classifying the selected literature, such as (a) the various domains of the available blockchain-enabled SC traceability systems and relevant methodologies applied; (b) the implementation maturity of these traceability systems along with technical implementation details; and (c) the sustainability perspective (economic, environmental, social) prevalent to these implementations. We provide key takeaways regarding the open issues and challenges of current blockchain traceability implementations and fruitful future research areas. Despite the significant volume and plethora of blockchain-enabled SC traceability systems, academia has so far focused on unstructured experimentation of blockchain-associated SC traceability solutions, and there is a clear need for developing and testing real-life traceability solutions, especially taking into account feasibility and cost-related SC aspects.
    Keywords supply chain ; traceability ; blockchain ; sustainability ; Environmental effects of industries and plants ; TD194-195 ; Renewable energy sources ; TJ807-830 ; Environmental sciences ; GE1-350
    Subject code 690
    Language English
    Publishing date 2022-02-01T00:00:00Z
    Publisher MDPI AG
    Document type Article ; Online
    Database BASE - Bielefeld Academic Search Engine (life sciences selection)

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  3. Article ; Online: Is Mandatory Vaccination in Population over 60 Adequate to Control the COVID-19 Pandemic in E.U.?

    Nikolaos P. Rachaniotis / Thomas K. Dasaklis / Filippos Fotopoulos / Michalis Chouzouris / Vana Sypsa / Antigone Lyberaki / Platon Tinios

    Vaccines, Vol 10, Iss 329, p

    2022  Volume 329

    Abstract: Vaccine hesitancy, which potentially leads to the refusal or delayed acceptance of COVID-19 vaccines, is considered a key driver of the increasing death toll from the pandemic in the EU. The European Commission and several member states’ governments are ... ...

    Abstract Vaccine hesitancy, which potentially leads to the refusal or delayed acceptance of COVID-19 vaccines, is considered a key driver of the increasing death toll from the pandemic in the EU. The European Commission and several member states’ governments are either planning or have already directly or indirectly announced mandatory vaccination for individuals aged over 60, the group which has repeatedly proved to be the most vulnerable. In this paper, an assessment of this strategy’s benefits is attempted by deriving a metric for the potential gains of vaccination mandates that can be used to compare EU member states. This is completed by examining the reduction in Standard Expected Years of Life Lost (SEYLL) per person for the EU population over 60 as a function of the member states’ vaccination percentage in these ages. The publicly available data and results of the second iteration of the SHARE COVID-19 survey on the acceptance of COVID-19 vaccines, conducted during the summer of 2021, are used as inputs.
    Keywords COVID-19 ; mandatory vaccination ; SEYLL ; Medicine ; R
    Language English
    Publishing date 2022-02-01T00:00:00Z
    Publisher MDPI AG
    Document type Article ; Online
    Database BASE - Bielefeld Academic Search Engine (life sciences selection)

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  4. Article ; Online: Supply chain management in view of climate change

    Thomas K. Dasaklis / Costas P. Pappis

    Journal of Industrial Engineering and Management, Vol 6, Iss 4, Pp 1139-

    an overview of possible impacts and the road ahead

    2013  Volume 1161

    Abstract: Purpose: The paper aims to provide a general overview of the impacts of climate change upon supply chains and to analyze the implications of climate change for supply chain management in terms of strategic and operational planning. A roadmap of fruitful ... ...

    Abstract Purpose: The paper aims to provide a general overview of the impacts of climate change upon supply chains and to analyze the implications of climate change for supply chain management in terms of strategic and operational planning. A roadmap of fruitful research approaches is also presented. Design/methodology/approach: The paper makes use of a general review of the relevant literature and, based on a systematic categorization of the findings, looks for useful insights towards the issues of climate change and supply chain management. A framework is drawn for systematically assessing the impacts of climate change upon supply chains and their management, while making suggestions for future research. Findings and Originality/value: Supply chain networks run physical, operational and reputational risks attributed to climate change. Escalation in regulations, market forces and stakeholders’ pressures are paving the way for the decarbonization of supply chains with obvious implications for supply chain management. Supply chain managers should pay special attention to the impacts of climate change on supply chains and academics should further explore the interrelationships between climate change and supply chain design and operations. Research limitations/implications: Additional qualitative research based on grounded theory is suggested for validating and interconnecting the findings with empirical data. Practical implications: The paper provides several insights towards the issues of supply chain management in view of climate change and may serve as an initial basis for exploring future research directions by academics. Practitioners, especially those drafting value-creating supply chain agendas, may also find these insights useful for improving their managerial practices. Originality/value: By providing an original structured overview of the impacts of climate change upon supply chain design and operations management the paper substantiates the need for management improvements and provides research directions that may prove valuable to researchers.
    Keywords climate change ; impacts of climate change ; supply chain design and operations management ; Industrial engineering. Management engineering ; T55.4-60.8 ; Social Sciences ; H ; Commerce ; HF1-6182 ; Business ; HF5001-6182
    Subject code 650
    Language English
    Publishing date 2013-09-01T00:00:00Z
    Publisher OmniaScience
    Document type Article ; Online
    Database BASE - Bielefeld Academic Search Engine (life sciences selection)

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