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Victor Avramov
Time Series Analysis of Prices and Quantities at the Bulgarian Electricity Exchange in Conditions of Low Liquidity
Summary:
This article analyzes the time series of prices and quantities on the Bulgarian electricity exchange. The focus is on the period between January 2016 and June with the assumption that in this initial period for its operation, the stock exchange trade is not sufficiently liquid. Statistical tests and seasonal decomposition of quantities and prices are made. This allows the determination of their statistical properties. The analysis shows that both time series are characterized by mean reversion and have a weekly seasonality.
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Krasimira Slaveva, Vanya Ganeva
Sharing Economy – Characteristics, Consumer Practices and Measurement
Summary:
This study examines the changes in the economy reflected in the sharing economy concept. Since the beginning of the 21st century, it has become an important part of the world economy posing a number of challenges to the operating companies and regulatory bodies. The development of the sharing economy has led to the transformation of many sectors and to some changes in the way a number of businesses operate. In consumer models, attention is being paid to sustainable (green, moral) consumption.
The aim of the study is to characterize and clarify the importance of the sharing economy. The study focuses on: presenting the main characteristics of the sharing economy, clarifying the factors that underlie its emergence; examining the consumer practices that distinguish it, as well as the ways of measuring and assessing it.
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Nadezhda Dimova
Contemporary Aspects of Sustainable Design of the Food Supply Chain
Summary:
The rapid development of technology and digitalisation pose a number of problems for food supply chains. Sustainability in itself is a challenge that enters all areas and in particular in business. In this sense, a special challenge is the modern aspects of sustainable design of the food supply chain, which makes managers make quick, flexible and adequate decisions. Digitalization, in turn, provides excellent conditions for the realization of the sustainable design of the food supply chain.
The article highlights and presents the modern aspects of the sustainable design of the food supply chain. The hypothesis of the need to comply with modern changes, which require the construction of a sustainable design of the food supply chain, has been proven.
