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The purpose of this paper is to examine how active consumers, i.e. consumers that can inter-temporally shift their load, can influence electricity prices. As demonstrated in this paper, inter-temporal load shifting can induce negative electricity prices, a recurring phenomenon on power exchanges.

The paper presents a novel electricity-market model assuming a nodal-pricing, energy-only spot market with active consumers. This study formulates an economic equilibrium problem as a linear program and uses an established six-node case study to compare equilibrium prices of a model with inflexible demand to a model with flexible demand of active consumers.

This study illustrates that temporal coupling of hourly market clearing through load shifting of active consumers can cause negative electricity prices that are not observed in a model with ceteris paribus inflexible demand. In such situations, where compared to the case of inflexible demand more flexibility is available in the system, negative electricity prices signal lower total system costs. These negative prices result from the use of demand flexibility, which, however, cannot be fully exploited due to limited transmission capacities, respectively, loop-flow restrictions.

Literature indicates that negative electricity prices result from lacking flexibility. The results illustrate that active consumers and their additional flexibility can lead to negative electricity prices in temporally coupled markets, which in general contributes to increased system efficiency as well as increased use of renewable energy sources. These findings extend existing research in both the area of energy flexibility and causes for negative electricity prices. Therefore, policymakers should be aware of such (temporal coupling) effects and, e.g. continue to allow negative electricity prices in the future that can serve as investment signals for active consumers.

Nowadays, universities increasingly consider reputation as a key component for improving quality and rankings. A positive reputation opens doors to added value and diverse opportunities. This paper aims to explore Middle Eastern higher education managers' perceptions of university reputation components.

Given the significance of this concept in Middle Eastern universities, a descriptive phenomenological qualitative approach is adopted to identify these key components. The study includes interviews with university managers, and data are collected through semi-structured interviews and analyzed thematically.

The findings reveal that, from the perspective of higher education managers, university reputation is influenced by four main components: university management and leadership, quality and performance, identity and image and social responsibility. These components are tailored to the context of Middle Eastern countries.

Practical implications are clearly laid out in the form of four key themes for higher education managers in Middle Eastern countries to manage reputation.

The study’s outcomes can be used as a guide for university managers in developing countries to change the situation in their favor and achieve great success in the competitive condition of universities by planning and making policies in this direction. Also, the managers of higher education in the Middle Eastern countries can take advantage of the components of this study to improve the quality and quantity of their universities and take an important step towards increasing the university’s reputation at the international level.

The purpose of this paper is to analyze the impact of different information source on consumer attitudes toward genetically modified food.

The data used in this study are obtained from a large-scale nationwide consumers' survey in urban China conducted by the China Center for Agricultural Policy, Peking University, in 2020. A descriptive analysis between information sources and consumer attitudes toward GM food was conducted. Based on the collected data, an econometric model on the determinants of consumer attitudes was constructed and used for analysis.

This study shows that the impact of new media is currently no different than that of traditional media, indicating that the media campaign successfully reduced the spread of rumors and misinformation regarding GM food. Moreover, this study also shows that consumers whose main information source regarding GM foods is school hold more positive feelings toward such food.

This study contributes to the existing literature by examining the impact of information source on consumer attitudes toward GM food. To reverse consumers' negative attitudes, China has launched a widespread media campaign since the first decade of the 2000s. Results of this study show that authorities' efforts to manage and surveil new media have yielded the desired outcome.