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A single fuzzy rule to smooth the sharpness of mixed data: Time and frequency domains analysis Abstract An essential part of any scientific study on any time series analysis depends strongly on availability of reliable data. It is a fact that experimental data records are always contaminated by inaccurate information, not only due to measurement errors but(More)
—The assessment of a theory is the main objective of scientists. Theories are always introduced by models, and model selection is applied to many various fields of scientific studies in order to corroborate or verify the theory as the winning one among a set of competing hypotheses. Different criteria are taken as bases to select one model among several(More)
Keywords: Neural networks Time series analysis Data envelopment analysis Electricity consumption forecasting a b s t r a c t Due to various seasonal and monthly changes in electricity consumption and difficulties in modeling it with the conventional methods, a novel algorithm is proposed in this paper. This study presents an approach that uses Artificial(More)
In this paper, a system dynamics model is developed to show how the changes in electricity price affect consumption pattern of the household sector in Iran. Electricity is a kind of commodity that is very difficult and expensive to be stored, if not impossible. It means that energy supply must always meet the demand. In addition, electricity supply capacity(More)
The mobile market in Iran is experimenting a transition period from monopoly by the incumbent service provider to a relatively competitive market by introducing the third operator. This paper describes the result of a research concerning the dynamisms of helping the churn in the mobile network by the Number Portability service. The feature adds to the(More)
Rise of Social Network Sites, such as Facebook, significantly influences the behaviour of students around the world nowadays. Different studies have been done up till now to investigate different stimuli on using Facebook. In this study, as one of the first attempts to investigate dynamic influencing factors, systems approach is used to consider such(More)
Fuzzy filters are often strong in smoothing corrupted signals, whereas they have simple structures. In this paper, a new powerful, yet simple fuzzy procedure is introduced for sharpness reduction in two-dimensional signals. It is indeed an extension of our previously published one-dimensional fuzzy smoothing filter. The proposed method looks for sharp(More)
Recently, researchers have focused on how to minimize the negative effects of industrial activities on environment. Consequently, they work on mathematical models, which minimize the environmental issues as well as optimizing the costs. In the field of supply chain network design, most managers consider economic and environmental issues, simultaneously.(More)
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