Displaying from 41 to 50 of 296 available piece of news
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Stackelberg Social Equilibrium in Water Markets
Market power in water markets can be modeled as simultaneous quantity competition on a river structure and analyzed by applying social equilibrium. In an example of a duopoly water market, the authors argue that the lack of backward induction logic implies that the upstream supplier foregoes profitable strategic manipulation of water to the downstream supplier. To incorporate backward induction, they propose the Stackelberg social equilibrium concept. The authors prove the existence of Stackelberg social equilibrium in duopoly water markets with an upstream-downstream river structure and derive it in the example of a duopoly market.
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From rapid decline to high growth: where in the distribution did COVID hit hardest?
The authors explore how did the COVID shock hit European firms at the upper quantiles (high-growth superstars) and the lower quantiles (rapidly declining firms). The authors analyse the European Investment Bank Investment Survey (2016-2020) and apply graphical techniques and quantile regression to evaluate the COVID shock along the growth rates distribution.
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The Art of Sharing Resources: How to Distribute Water during a Drought Period
Water scarcity is a growing problem in many regions worldwide. According to the United Nations, around one-fifth of the world's population lives in areas where water is scarce. Another one-quarter of the world's population must face water supply cuts, mainly because this proportion of the population lacks the necessary infrastructure to acquire water from rivers and aquifers (UN, 2005). Water is a resource that is essential to human survival and is also present in all productive processes in the economy. Therefore, we are challenged to adequately manage water to ensure the population's well-being and to achieve socioeconomic development.
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Built structures strongly influence cross-country patterns of energy demand and CO2 emissions
Built structures, i.e. the patterns of settlements and transport infrastructures, are known to influence per-capita energy demand and CO2 emissions at the urban level.
At the national level, the role of built structures is seldom considered due to poor data availability. Instead, other potential determinants of energy demand and CO2 emissions, primarily GDP, are more frequently assessed. We present a set of national-level indicators to characterize patterns of built structures.
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Data vs. information: Using clustering techniques to enhance stock returns forecasting
This study has shown that clustering models can help investors and traders predict stock prices and increase the returns of their trading algorithms.
We used a method called k-means clustering (with alternative distance metrics) to group stocks based on their quarterly financial ratios, prices, and daily returns.
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Average monotonic cooperative games with nontransferable utility
A non-negative transferable utility (TU) game is average monotonic if there exists a non-negative vector according to which the relative worth is not decreasing when enlarging the coalition. We generalize this definition to the nontransferable utility (NTU) case.
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The key roles of renewable energy and economic growth in disaggregated environmental degradation
This paper investigates the validity of the environmental Kuznets curve (EKC) hypothesis for the G7 group of countries through the ecological footprint and its components (namely built-up land, carbon, cropland, fishing grounds, forest land, and grazing land). Most previous contributions rely on CO2 emissions as a measure of environmental damage, whereas using disaggregated ecological footprint allows us to consider resource consumption and waste generation compared to nature's resource generation and waste absorption.
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Location attributes explaining the entry of firms in creative industries
This paper focuses on creative industries and the role played by the existing spatial distribution and agglomeration economies of these activities in relation to their entry decisions.
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Connectedness between emerging stock markets, gold, cryptocurrencies, DeFi and NFT
This paper examines the dynamic connectedness between Gulf countries and BRICS stocks markets with a sample of cryptocurrencies, as well as two newly developed digital assets, namely NFT and DeFi, and gold. Our analysis is based on wavelet coherence, which is a suitable methodology considering the nonlinear dynamics present in data.
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Attitudes Towards Single Parents’ Children in Private and State-Dependent Private Schools
In the paper, we study whether private and state-dependent private schools in Catalonia (Spain) are more reluctant to interact with single parents than with heterosexual couples. We conduct a field experiment during the children's pre-registration period.
We create three types of fictitious families (heterosexual couple, single mother, and single father) and send e-mails to schools in which the family structure is made explicit. Our results indicate that schools are more prone to interact with single parents than with heterosexual couples. Hence, this suggests that, if any, there seems to be positive discrimination towards single parents in the schooling context.
