This article aims at disambiguation or better say, decontradiction of the concept of ideology by referring to Ricoeur's opinions about ideology. Ricoeur calls his method of studying ideology ...phenomenological. Why phenomenology? Because the term ideology, when placed in a polemical framework, will suffer from both "bad use" and "abuse". Only with a serious semantic approach and a correct explanation of the conditions that this concept depends on, can we put an end to this abuse. Such a task is possible in the light of an approach that Ricoeur calls "developmental phenomenology", "a rising analysis of the concept" and "an attempt to explore the subsurface of the obvious meaning of ideology to reach its fundamental meanings". The attempt is to disambiguate this concept, which is at first glance polemical and controversial, so that a clearer and fairer definition of it would be presented. Based on Paul Ricoeur's work titled Lectures on Ideology and Utopia, which was delivered at the University of Chicago in 1975, and his other articles and works on ideology and phenomenology, this article has tried to answer the two main questions of this field together with Ricoeur: a) Who were the main theorists of the concept of ideology? b) How many major definitions can be extracted from the phenomenological study of ideology? The extract of the intertwined answer to the two mentioned questions is that Ricoeur, while examining the works of people such as Marx, Althusser, Mannheim, Weber, Habermas and Geertz, questions the common and negative perceptions of ideology, and based on a detailed and deep examination of the works of the mentioned thinkers, comes to three major and specific definitions, or in other words, three stages or functions of ideology; the first one based on Marx's definition, the second one based on Weber's attitude and the last one based on Geertz's views about this term. Ricoeur calls these three definitions, stages or functions respectively, ideology as "ambiguity of reality", ideology as source of "power legitimacy", and finally ideology as source of "social cohesion". Based on such an analysis of ideology, in the second part of the article, the different functions of utopia have been discussed, and while emphasizing the positive aspects of utopia, it has been concluded in conformity with Ricoeur that a society without utopia is a dead society.
This article develops a practical framework for the multiobjective optimal planning of a grid-connected renewable-battery system considering a long-period operation. The capacities of wind turbine, ...solar photovoltaic (PV), and battery storage are optimized by minimizing three objective functions: cost of electricity (COE), grid dependence (GD), and total curtailed energy (TCE). A new rule-based energy management is developed for the long-period operation, where: 1) the capacity degradations of PV and battery are applied; 2) purchase and sell electricity prices are updated for each year using interest and escalation rates; and 3) the salvation value of the components is considered to achieve a realistic economic analysis of the planning problem. The developed multiobjective optimal planning model is examined using the long-period (ten years) real data of wind speed, solar insolation, ambient temperature, and load consumption for a grid-connected household in Australia. It is found that a household with the minimum GD (0.008%) results in a COE of 116 ¢/kWh with a TCE of 100 MWh in ten years. The proposed optimal planning framework based on the long-period operation is compared with the short-period operation.
This paper investigates the optimal sizing of solar photovoltaic (PV) and battery energy storage (BES) for grid-connected houses based on mutually-agreed energy sharing prices by considering the flat ...and time-of-use (TOU) tariffs. The grid-tied house with PV-BES, referred to house 1 (H1) in the paper shares electricity with house 2 (H2) whenever needed with mutually-agreed electricity tariffs. The main objective function of the study is to minimize the cost of electricity (COE) for the H1 while decreasing COE for H2. Eight different schemes are investigated with the combination of flat and TOU tariffs for buying, selling, and mutually-agreed rates, respectively. For each scheme, optimal sizing of components and COE for both houses are evaluated. Realistic hourly-arranged annual data of temperature, solar irradiation, and load consumption of two houses are used as the input data. For each scheme, the results are compared with the situation when H1 does not have PV-BES and there is no electricity sharing. Sensitivity, operational, and uncertainty analyses are provided for the scheme with the lowest COE.
This paper determines the optimal capacity of solar photovoltaic (PV) and battery energy storage (BES) for a grid‐connected house based on an energy‐sharing mechanism. The grid‐connected house, also ...mentioned as house 1 where it is relevant, shares electricity with house 2 under a mutually agreed fixed energy price. The objective is to minimize the cost of electricity (COE) for house 1 while decreasing the electricity cost of house 2. Practical factors such as real data for solar insolation, electricity consumption, grid constraint, ambient temperature, electricity rate, and battery degradation are considered based on actual data. The developed methodology is examined by taking the actual load data of two houses in South Australia. Different scenarios of contract years between the houses are investigated to make it more practical in real life. Sensitivity analyses are conducted for the sharing of energy between the houses and by changing parameters like export power limitation, load of houses, and costs of PV and BES. Likewise, operational analysis is done for two days of summer and winter. It is found that when energy sharing is applied, the optimal design of the PV‐BES system will achieve lower COE for both houses.
The paper determines the optimal capacity of solar photovoltaic and battery energy storage for a grid‐connected house based on an energy‐sharing mechanism. Energy is shared between the houses with an upfront mutually agreed electricity price. The objective is to minimize the cost of electricity for the house with photovoltaic and battery energy storage while decreasing the electricity cost of the house 2.
This paper develops a sizing model of solar photovoltaic (SPV), small wind turbine (SWT) and battery storage system (BSS) for a grid-connected home with a fast-charging plug-in electric vehicle ...(PEV). The home trades energy with the main grid under time-of-use tariffs for selling and purchasing electricity that affects the energy management. In this paper, a practical rule-based operation strategy is developed for the grid-connected home with fast-charging PEV that enables efficient and cheap energy management. The sizing problem is solved using a supervised machine learning algorithm, which is a feed forward neural network, by minimizing the cost of electricity. While the developed renewable-battery sizing model is general, it is examined using actual data of insolation, wind speed, temperature, load, grid constraints, as well as technical and economic data of BSS, SPV, SWT, and PEV in Australia. Uncertainty analysis is investigated based on ten scenarios of data for wind speed, temperature, load, insolation, and PEV. The effectiveness of the proposed model with fast-charging PEV is verified by comparing to slow charging and uncontrolled fast-charging models, as well as two other machine learning methods and a metaheuristic algorithm. It is found that the proposed model decreases the cost of electricity by 10.1% and 19.6% compared to slow charging and uncontrolled fast-charging models for the grid-connected home with PEV.
A practical optimal sizing model is developed for grid‐connected rooftop solar photovoltaic (PV) and battery energy storage (BES) of homes with electric vehicle (EV) to minimise the net present cost ...of electricity. Two system configurations, (1) PV‐EV and (2) PV‐BES‐EV, are investigated for optimal sizing of PV and BES by creating new rule‐based home energy management systems. The uncertainties of EV availability (arrival and departure times) and its initial state of charge, when arrives home, are incorporated using stochastic functions. The effect of popular EV models in the market is investigated on the optimal sizing and electricity cost of the customers. Several sensitivity analyses are adopted based on variations in the grid constrains, retail price and feed in tariff. Uncertainty analysis is provided based on the variations of insolation, temperature, and load to approve the optimal results of the developed model. A practical guideline is presented for residential customers in a typical grid‐connected household to select the optimal capacity of PV or PV‐BES system considering the model of EV. While the proposed optimization model is general and can be used for various case studies, real annual data of solar insolation, temperature, household's load, electricity prices, as well as PV and BES market data are used for an Australian case study. The developed optimal sizing model is also applied to residential households in different Australian States.
optimal sizing model for grid‐connected solar PV and BES in homes with EV Development of new HEMS Uncertainties of arrival and departure times, and initial state of charge of EV.
In this study, various composites of bioglass/gelatin/polycaprolactone (BG/GE/PCL) were produced and coated on the surface of 316L stainless steel (SS) to improve its bioactivity. X-ray ...diffractometry (XRD), scanning electron microscopy (SEM) and energy-dispersive X-ray spectroscopy (EDS) were utilized to characterize the specimens. The results showed that bioglass particles were distributed uniformly in the coating. By increasing the wt.% of bioglass in the nanocomposite coatings, the surface roughness and adhesion strength increased. The corrosion behavior of GE/PCL (PCL-10 wt.% gelatin coated on 316L SS) and 3BG/GE/PCL (GE/PCL including 3 wt.% bioglass coated on 316L SS) samples were studied in PBS solution. The results demonstrated that 3BG/GE/PCL sample improved the corrosion resistance drastically compared to the GE/PCL specimen. In vitro bioactivity of samples was examined after soaking the specimens for 7, 14 and 28 days in simulated body fluid (SBF). The results showed a significant apatite formation on the surface of 3BG/GE/PCL samples. The cell viability evaluation was performed using 3- (4, 5-dimethylthiazol-2-yl)-2,5 diphenyltetrazoliumbromide (MTT) tests which confirmed the enhanced cell viability on the surface of 3BG/GE/PCL samples. The in vivo behavior of specimens illustrated no toxicity and inflammatory response and was in a good agreement with the results obtained from the in vitro test.
The present study aims to consider the effects of age on liver enzyme levels of obese men following 15 weeks of moderate-intensity interval training (MIIT). Ten obese middle-aged persons (aged 55.2 ± ...4.31 years; height 171.4 ± 3.59 cm; weight 95.7 ± 14.61 kg; and body mass index BMI 32.53 ± 4.59 kg/m
) and 10 obese young adults (age 22.7 ± 1.25 years; height 177.4 ± 3.94 cm; weight 100.7 ± 8.04 kg; and BMI 32 ± 2.39 kg/m
) were enrolled in this study. Interval training was followed by 65 to 75% of VO
max, 1 set, 2 minutes and seven repetitions, 1 minute rest-relief interval with 50% of VO
max. Blood sampling was carried out in order to measure aspartate aminotransferase (AST), alanine aminotransferase (ALT), and alkaline phosphatase (ALP). All analyses were conducted by Statistical Package for the Social Sciences (SPSS) software (version 16 for windows). A descriptive statistics including mean and standard deviation was obtained for all parameters. Analysis of covariance (ANCOVA) and test of normality (Shapiro-Wilk test) were used. Paired sample
-test was used to compare the pretest and posttest data in each group. Comparison between middle-aged and young adults has shown that MIIT causes significant increase of ALT levels in young adults. There is no significant difference between middle-aged and young adults on other variables. Also paired sample
-test shows that ALP was decreased in both groups.
Rohollah V, Sedigheh K, Yadollah M, Rahmatollah K, Mojtaba M. Effects of Age on Liver Enzyme Levels of Obese Men following Moderate-intensity Interval Training. Euroasian J Hepato-Gastroenterol 2016;6(2):131-133.
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