8 research outputs found

    Financial sustainability of the waste treatment projects that follow PPP contracts in Greece: a formula for the calculation of the profi t rate

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    This paper examines the initial budget estimation process for the implementation of waste treatment projects through Public-Private Partnership (PPPs) in Greece. The study, having as strong theoretical foundation the project's financial analysis that is included in the cost benefit analysis methodology, evaluates the financial sustainability of a waste management project. Initially, the budget estimation process that is currently used under the conventional procurement of public projects in Greece is followed and the results demonstrate that the specific process, where the investor's Profit Rate (PR) takes specific values, cannot be used in the case of a PPP. Furthermore, a new formula is developed, which calculates the minimum value of the private sector's PR, in order to determine the existence of positive cash flows during the operational phase of the project and to ensure the partnership's financial sustainability. The new formula can be a useful tool to the public decision-makers in Greece, because it helps them to evaluate the financial sustainability of the waste treatment projects that follow PPP contracts, during the conceptual phase

    Policy Implications. How to Support Decision-Makers in Setting and Solving Complex Problems

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    Stakeholders participation in the field of the public decision stimulates learning processes able to generate common knowledge based on shared information. In fact, by including different stakeholders in the decision process different knowledge domains can be integrated. To facilitate this processes, Decision Support Systems (DSSs) have been framed to support stakeholders in decision making for specific purposes. The contribution aims at reflecting on stakeholder participation and to propose a possible participatory process in the context of the location of healthcare facilities based on the methodological framework developed by Simon extended to the scale of Arnstein. Connections of the study within the line of research concerning the “Policy Analytics” perspective are proposed highlighting the importance of the combination of data-driven with value-driven approaches. Moreover, this conclusive chapter will synthetize main achievement and findings of the book

    A Methodology for Sustainable Management of Food Waste

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    This article is distributed under the terms of the Creative Commons Attribution 4.0 International License (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution, and reproduction in any medium, provided you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made.As much as one third of the food intentionally grown for human consumption is never consumed and is therefore wasted, with significant environmental, social and economic ramifications. An increasing number of publications in this area currently consider different aspects of this critical issue, and generally focus on proactive approaches to reduce food waste, or reactive solutions for more efficient waste management. In this context, this paper takes a holistic approach with the aim of achieving a better understanding of the different types of food waste, and using this knowledge to support informed decisions for more sustainable management of food waste. With this aim, existing food waste categorizations are reviewed and their usefulness are analysed. A systematic methodology to identify types of food waste through a nine-stage categorization is used in conjunction with a version of the waste hierarchy applied to food products. For each type of food waste characterized, a set of waste management alternatives are suggested in order to minimize environmental impacts and maximize social and economic benefits. This decision-support process is demonstrated for two case studies from the UK food manufacturing sector. As a result, types of food waste which could be managed in a more sustainable manner are identified and recommendations are given. The applicability of the categorisation process for industrial food waste management is discussed