The role of data frequency and method selection in electricity price estimation: Comparative evidence from Turkey in pre-pandemic and pandemic periods

Author(s):  
Serpil Kiliç Depren ◽  
Mustafa Tevfik Kartal ◽  
Hasan Murat Ertuğrul ◽  
Özer Depren
2019 ◽  
Vol 32 ◽  
Author(s):  
Camila Thaís Adam ◽  
Daniela Pacheco dos Santos Haupenthal ◽  
Inaihá Laureano Benincá ◽  
Janeisa Franck Virtuoso ◽  
Alessandro Haupenthal

Abstract Introduction: Due to the increasing number of postgraduate programs in rehabilitation science and of masters and doctoral researchers in Brazil, there has been significant improvement in the production and quality of these studies. However, this only addresses some research fields but not others, which highlights the need to show the current professional development process and discuss the role of these professionals in an interdisciplinary framework. Objective: To analyze the research lines and disciplines of Brazilians’ postgraduate programs in rehabilitation science. Method: A qualitative descriptive study used the Sucupira platform and data sought from websites properly registered on Capes (Coordination for the Improvement of Higher Education Personnel). Data frequency analysis and the relation between research lines and disciplines were achieved using TextStat (Simple Text Analysis Tool), version 3.0. Results: The most frequent fields of study among the postgraduate programs analyzed were neurology, cardiorespiratory, and musculoskeletal. The description of the research lines and their objectives aim the assessment or intervention for rehabilitation comprehension. Conclusion: The research lines and disciplines do not follow epistemological discussions, neither the change of concepts or paradigms necessary for the successful entry of these professionals into an interdisciplinary framework.


2017 ◽  
Vol 51 (9/10) ◽  
pp. 1597-1611 ◽  
Author(s):  
Rajesh Kumar Sinha ◽  
Atanu Adhikari

Purpose This paper aims to investigate the influence of advertised reference price (ARP) and sales price (SP) as anchor points on the latitude of expected price, and subsequently on purchase intention (PI). The research involves the theoretical lens of selective anchoring mechanism, which allows investigation of the influence of ARP and SP in a situation where price estimation task is a “non-thoughtful processes”. Design/methodology/approach On the basis of quasi-experimental design, the study involves intercept survey of 142 shoppers. Findings The study finds that due to anchoring effect, the highest and the lowest expected prices shift toward ARP and SP, respectively. Consequently, it influences the latitude of expected price, which in turn influences purchase intention. In addition, the study proposes and tests a method to forecast expansion and contraction of the latitude of expected price. Research limitations/implications It suggests a new mechanism to understand the simultaneous influence of ARP and SP, provides a mechanism to understand shifts in price latitude’s end-points and investigates a phenomenon with two externally provided anchors. Practical implications The study highlights the role of the latitude of expected price in understanding consumers’ response. Results suggest that a plausible ARP, when joined with an above-expectation SP, can fetch better consumer responses. Originality/value The study uniquely investigates a problem with two anchor points and two estimation targets, and proposes a construct of internal price uncertainty (IPU).


2010 ◽  
Vol 32 (1) ◽  
pp. 23-38 ◽  
Author(s):  
Melinda Jane Craike ◽  
Denis Coleman ◽  
Clare MacMahon

This study examined the role of leisure-time physical activity in reducing the impact of high life stress and time pressure on depression, a buffer effect, for mothers of infants. A direct association between leisure-time physical activity and depression, regardless of both sources of stress, was also tested. A sample of approximately 5,000 mothers of infant children completed questionnaires that measured demographic characteristics, frequency of participation in leisure-time physical activity, life stress, time pressure, and depression (depressive symptoms). Hierarchical multiple regression incorporating an interaction component to represent the buffering effect was used to analyze the data. Frequency of leisure-time physical activity was significantly associated with lower levels of depressive symptoms for both types of stress and acted as a buffer of the association between life stress and depressive symptoms, but did not buffer the influence of time pressure on depressive symptoms. These findings indicated that leisure-time physical activity assists in maintaining the mental health of mothers of infants; however, caution is needed when promoting physical activity for mothers who feel under time pressure.


Energies ◽  
2019 ◽  
Vol 12 (11) ◽  
pp. 2082 ◽  
Author(s):  
Diego Aineto ◽  
Javier Iranzo-Sánchez ◽  
Lenin G. Lemus-Zúñiga ◽  
Eva Onaindia ◽  
Javier F. Urchueguía

The mainstream of EU policies is heading towards the conversion of the nowadays electricity consumer into the future electricity prosumer (producer and consumer) in markets in which the production of electricity will be more local, renewable and economically efficient. One key component of a local short-term and medium-term planning tool to enable actors to efficiently interact in the electric pool markets is the ability to predict and decide on forecast prices. Given the progressively more important role of renewable production in local markets, we analyze the influence of renewable energy production on the electricity price in the Iberian market through historical records. The dependencies discovered in this analysis will serve to identify the forecasts to use as explanatory variables for an electricity price forecasting model based on recurrent neural networks. The results will show the wide impact of using forecasted renewable energy production in the price forecasting.


2016 ◽  
Vol 69 (2) ◽  
pp. 293-316 ◽  
Author(s):  
Karen Maguire ◽  
Abdul Munasib

JAMA ◽  
1966 ◽  
Vol 195 (12) ◽  
pp. 1005-1009 ◽  
Author(s):  
D. J. Fernbach
Keyword(s):  

JAMA ◽  
1966 ◽  
Vol 195 (3) ◽  
pp. 167-172 ◽  
Author(s):  
T. E. Van Metre

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