Modelling of energy consumption in sociotechnical systems with intelligent equipment

Современные социотехнические системы в различных областях характеризуются наличием в их составе большого количества интеллектуального оборудования, которое может самостоятельно регулировать собственное потребление энергии, а также взаимодействовать с другими потребителями в процессах принятия решений и управления. Одна из таких отраслей - энергетика, где самоорганизация и системы коллективного потребления являются наиболее перспективными с точки зрения обеспечения эффективности использования энергоресурсов. Рассмотрены подходы к установлению статических и динамических тарифов на электроэнергию. Проведено сравнение двух моделей энергопотребления - статического двухтарифного и динамического, учитывающих рациональное поведение умных устройств, способных выбирать лучшие режимы для потребления электроэнергии. Показано влияние количества таких устройств на возможность достижения равномерного потребления при использовании второй модели. Modern socio-technical systems in various fields include a large number of smart equipment that can independently regulate its own energy consumption, as well as interact with other consumers in decision-making and management processes. Energy is one of these areas. Self-organization and collective self-consumption are the most promising in terms of ensuring the efficiency of energy use. Existing and prospective approaches to using static and dynamic time-based tariffs are under consideration. The paper presents a mathematical description of two models of energy consumption: a static model based on the allocation of two zones with a fixed duration and tariffs for each one and a dynamic model of two-tariff accounting with feedback, which assumes tariffs changing based on the results of the analysis of current electricity consumption. A pilot study of both models was conducted by using energy consumption data and taking into account the rational behavior of smart devices as consumers who can choose the best periods for electricity consumption. During the experiments it was investigated how an increase in the share of smart devices in the composition of electricity consumers as well as options for establishing zones and tariffs, affect the possibility of achieving uniform consumption during the day. Experiments have shown that with a small proportion of smart devices, acceptable results that reduce the variation in the consumption function can favor usage of the model without feedback. An increase in the number of actors in the system inevitably requires including a feedback mechanism into the system that allows the resource supplier to prevent excessive concentration of smart devices during the period of the cheaper tariff. However, when the share of smart devices exceeds a certain critical value, a pronounced inversion of the times of cheap and expensive tariffs occurs in two successive iterations. In this case, in order to ensure a quite even distribution of electricity consumption, it is advisable for the supplier to return to the single tariff rate. Thus, an excessive increase in the number of actors in the system can neutralize the effect of their use

Alteration of Consumption Habits in Turkey Over Time

Simon Kuznets and John Maynard Keynes did research on the subject of propensity to consume. Kuznets asserted that people do not alter their consumption/saving ratio and spend more when they have more disposable income. Keynes alleged that when disposable income increases, the rate of saving also increases over time because people tend to keep their consumption habits steady. Namely, the consumption/saving ratio of households or individuals tends to decrease as disposable income goes up. And in this study, the Keynesian consumption function is investigated in the Turkish economy. The result of this research might give insight into the future of the consumption/saving ratio in Turkey. In the study, the ARDL econometric model is operated with data from the Turkish Statistical Institute. The result of the study is that people change their consumption habits with the increase of disposable income. As a result, the consumption level has been slowing down, and the propensity to consume diminishes. That proves that the Keynesian consumption function holds in Turkey.

The Impact of Covid-19 on The Effect Multiplier on The Household Consumption Function in Jakarta

The purpose of this study is to examine the effect of a decrease in aggregate income, due to activity restrictions during the Covid-19 pandemic, on household consumption expenditure in Jakarta. The research model is based on the Absolute and Permanent income hypothesis, to see the long-term and short-term effects of changes in income on consumption expenditure. The research method is quantitative by using annual data on consumption expenditure and income at current prices for the period 2003 to 2020. The analysis model uses OLS and ECM regression. The results showed that income has a significant effect on the equation of the short-run and long-run consumption function. The short-term income crisis has an impact on the increase in the multiplier coefficient. In the short term there will also be an adjustment in consumption expenditures, according to what is postulated in the permanent income hypothesis. This indicates that in the short term expansionary fiscal policy is effective in increasing aggregate household consumption expenditure. Further research suggests adding the inflation variable as a proxy for economic conditions. Keywords: Absolute Income Hypothesis, Permanent Income Hypothesis, Household Consumption Expenditures, National Income, Multiplier.

Testing for structural break in aggregated consumption function of Russian households

The paper considers a simple aggregated consumption function for Russian economy in which households consume a constant fraction of a permanent income. The value of this fraction is estimated by households within the framework of the adaptive expectations process based on the dynamics of GDP at constant consumption prices. Testing for a structural break at an unknown date in the parameter of the propensity to consume is performed. The results of econometric estimation, taking into account the presence of an endogeneity in the regression equation, demonstrate that after 2014 there was a structural break, as a result of which the parameter of the propensity to consume of permanent GDP decreased by 6.5—9.2%.

Network Speed Scaling

Speed scaling for a network of servers represented by a directed acyclic graph is considered. Jobs arrive at a source server, with a specified destination server, and are defined to be complete once they are processed by all servers on any feasible path between the source and the corresponding destination. Each server has variable speed, with power consumption function P, a convex increasing function of the speed. The objective is to minimize the sum of the flow time (summed across jobs) and the energy consumed by all the servers, which depends on how jobs are routed, as well as how server speeds are set. Algorithms are derived for both the worst case and stochastic job arrivals setting, whose competitive ratio depends only on the power functions and path diversity in the network, but is independent of the workload.

Optimization of the consumption function under the North American Free Trade Agreement

In the last 40 years, the country has turned to developing the primary and tertiary sectors with a tax policy heavily taxing goods outside the basic basket and generalizing others. On the other hand, Government implemented support programs for vulnerable sectors. The imbalance between what the government receives and grants created greater poverty, affecting mainly households in the first three income deciles. This work shows this imbalance in different scenarios using an optimization model.

Consumption Function in Islamic Economics

M. Fahim Khan, “Macro Consumption Function in an IslamicFramework,” Journal of Research in Islamic Economics (JRIE), Vol. 1,No. 2, Winter 1404/1984, pp. 1-24.Prof. M. Fahim Khan’s paper suffers from a number of deficiencieswhich may be grouped under the following categories:1. Inaccuracies in the description of positions relating to modernsecular economics.2. Questionable interpretation of Islamic positions.3. Technical and logical errors in model construction.I shall take up these points in turn.To begin with, Prof. Khan’s description of the premises of moderneconomic theory of consumer behavior and its subsequent critique isinaccurate. According to him, “Modern economic theory studiesconsumer behavior under the following premises: i) It is assumed that aconsumer will decide what to consume and how much to consume only togain the material benefits and satisfaction. ii) It is generally assumedthat all his consumption is geared to satisfy his own needs. He is notbothered to satisfy anyone else’s needs. iii) It is assumed that a consumerbehaves rationally. This among other things, means:(a) the consumer will neither be a miser nor an unnecesssry spendthrift.(b) he will not hoard his wealth.” (p. 2)Modern economic theory of consumer behavior do&e not assume any ofthe said premises given by Prof. Khan. What modern theory msumes isthat a consumer with given income allocates his spending on differentgoods and services in such a way that he maximizes his utility orsatisfaction. According to modern theory, it does not matter whether aconsumer is a miser, spendthrift or a hoarder. Also it does not matter ...