Differential Evolution Research – Trends and Open Questions

Differential Evolution (DE), a vector population based stochastic optimization method has been introduced to the public in 1995. During the last 25 years research on and with DE has reached an impressive state, yet there are still many open questions, In this paper ,An improved differential evolution (IDE) algorithm was presented for power system Dynamic economic dispatch(IDED), Dynamic economic dispatch (DED), an extension of the economic dispatch problem, is a method of scheduling the online generators with a predicted load demand over acertain period of time taking into account the various constraints imposed on the system operation. The results indicate that IDE algorithm outperforms GA ,PSO and DE algorithms in solving DED problems.

Download Full-text

Energy Management Systems for Microgrids: Main Existing Trends in Centralized Control Architectures

Energies ◽

10.3390/en13030547 ◽

2020 ◽

Vol 13 (3) ◽

pp. 547 ◽

Cited By ~ 12

Author(s):

Danny Espín-Sarzosa ◽

Rodrigo Palma-Behnke ◽

Oscar Núñez-Mata

Keyword(s):

Energy Management ◽

Research Trends ◽

Management Systems ◽

Main Trend ◽

Extensive Literature ◽

Centralized Control ◽

Energy Management Systems ◽

Research Fields ◽

Open Questions ◽

Trend Identification

This paper presents both an extensive literature review and a qualitative and quantitative study conducted on nearly 200 publications from the last six years (based on international experience and a top-down analysis framework with five classification levels) to establish the main trends in the field of centralized energy management systems (EMS) for microgrids. No systematic trend analyses have been observed in this field in previous literature reviews. EMS attributes for several features such as objective functions, resolution techniques, operating models, integration of uncertainties, optimization horizons, and modeling detail levels are considered for main trend identification. The main contribution of this study is the identification of four specific existing research trends: (i) dealing with uncertainties (comprises 33% of the references), (ii) multi-objective strategy (29%), (iii) traditional paradigm (21%), and (iv) P-Q challenge (17%). Each trend is described and analyzed based on the main drive of these separate research fields. The key challenges and the way to cope with them are described based on the rationality of each trend, the results of previous reviews, and the previous experience of the authors. Overall, finding these main trends, together with a complete paper database and their features, serve as a useful outcome for a better understanding of the current research-specific challenges, opportunities, potential barriers, and open questions regarding the creation of future centralized EMS developments. The traditional numerical analysis is insufficient to identify research trends. Therefore, the need of further analyses based on the clustering approach is emphasized.

Download Full-text

Fluency: Research Trends and Resources

ASHA Leader ◽

10.1044/leader.rib.17022012.18 ◽

2012 ◽

Vol 17 (2) ◽

pp. 18-19

Keyword(s):

Research Trends

Download Full-text

What’s Next?

Journal of Media Psychology Theories Methods and Applications ◽

10.1027/1864-1105/a000034 ◽

2011 ◽

Vol 23 (1) ◽

pp. 60-63 ◽

Cited By ~ 32

Author(s):

Peter Vorderer

Keyword(s):

Cultural Differences ◽

Factor Model ◽

New Developments ◽

Theoretical Concepts ◽

Open Questions ◽

Entertainment Products ◽

Entertainment Theory

This paper points to new developments in the context of entertainment theory. Starting from a background of well-established theories that have been proposed and elaborated mainly by Zillmann and his collaborators since the 1980s, a new two-factor model of entertainment is introduced. This model encompasses “enjoyment” and “appreciation” as two independent factors. In addition, several open questions regarding cultural differences in humans’ responses to entertainment products or the usefulness of various theoretical concepts like “presence,” “identification,” or “transportation” are also discussed. Finally, the question of why media users are seeking entertainment is brought to the forefront, and a possibly relevant need such as the “search for meaningfulness” is mentioned as a possible major candidate for such an explanation.

Download Full-text