Нургуль Маматова - Применение модели векторной авторегрессии для анализа потребления электроэнергии
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This study analyzed the relationship between electricity consumption and other factors like tariffs using a VAR model. The results of the variance decomposition showed that tariff shocks did not impact consumption for the first 5 years but led to significant changes thereafter. The impulse response analysis found that tariff shocks reduced electricity consumption significantly after 5 years, with consumption returning to previous levels only by the 21st year. Therefore, the government's 2014 policy to reduce consumption through higher tariffs would start showing effects after 2019.
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Covariance is a measure of how two random variables change together, taking any value from -∞ to +∞. Covariance can be affected by changing the units of the variables. Correlation is a scaled version of covariance that indicates the strength of the relationship between two variables on a scale of -1 to 1. Unlike covariance, correlation is not affected by changes in the location or scale of the variables and provides a standardized measure of their relationship. Correlation is therefore preferred over covariance as a measure of the relationship between two variables.
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The document provides an introduction to measuring relationships between variables through covariance and Pearson's r. It defines correlation as a statistical method to describe and measure the relationship between two variables. Covariance is introduced as a way to measure how two variables vary together or oppose each other by taking the average of their cross-product deviations from the mean. However, covariance depends on the scale of measurement. Pearson's r standardizes the covariance by converting the variables to z-scores based on their standard deviations, allowing comparison of relationships between variables measured on different scales. It represents the covariability of the two variables divided by their separate variability.
Statistical Relationships
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2. Some key relationship types are general association, monotonic relationships (positive and negative), and linear relationships (positive and negative).
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A micro-grid is a part of power system which able to operates in grid or islanding mode. The most important variable that able to give us information about the stability in islanded micro-grid network is the frequency dynamical responses. The frequency analysis for multi-area micro-grid network model may involve a complicated of mathematical equations. This makes the researcher intending to omit several unnecessary parameters in order to simplify the equations. The purpose of this paper is to show an approach to derive the mathematical equations to represent the average behavior of frequency dynamical responses for two different micro-grid areas. Both of networks are assumed to have non-identical distributed generator behavior with different parameters. The prime mover and speed governor systems are augmented with the general swing equation. The tie line model and the information of rotor angle was considered. Then, in the last section, the comparison between this technique with the conventional approach using centre of inertia (COI) technique was defined.
Technical Paper Publication
This document summarizes different approaches for unbalanced load flow analysis in microgrids and distribution networks. It discusses models for unbalanced distribution lines and loads, which are common in microgrid scenarios. Various commercial power flow software packages are assessed for their ability to model microgrids and perform unbalanced power flow analysis. Case studies are presented that illustrate results from using sequence component and phase frame methodologies. The key components in microgrids are described as generators, distribution lines, transformers and loads. Models for representing distribution lines and loads in both phase and sequence frames are provided.
Dr.rk 2
This document discusses various types of experimental designs used in research, including factorial designs, response surface methods, and historical research. Factorial designs are used to study the effects of multiple factors simultaneously and identify interactions. Response surface methods employ designs like central composite designs and Box-Behnken designs to model nonlinear responses and find optimal conditions. Historical research systematically collects and evaluates past data without experimentation to understand and explain past events as accurately as possible through primary and secondary sources.
IRJET- Implementation of 3-Phase Electric Springs in Unbalanced Power Sys...
The document discusses implementing 3-phase electric springs in unbalanced power systems using instantaneous power theory. Electric springs are a demand-side management technique that can provide voltage regulation, power balancing, and minimize average and oscillating power. The proposed method uses instantaneous power theory and control schemes to enable electric springs to simultaneously regulate voltage and balance currents in 3-phase systems, while also optimizing active power by minimizing both average and oscillating components. Experimental results demonstrate the effectiveness of the multifunctional control and active power optimization methods.
Maximum power point tracking techniques a review
This document reviews various maximum power point tracking (MPPT) techniques for photovoltaic systems. It discusses 17 different MPPT techniques, comparing them based on their method (direct control, sampling, modulation), variables tracked (voltage, current), required circuitry (analog, digital), need for tuning, relative cost, and hardware complexity. The techniques range from simple hill-climbing methods like perturb and observe to more advanced intelligent techniques using fuzzy logic, neural networks, and particle swarm optimization. The document concludes that fuzzy logic and other hybrid/intelligent techniques provide good performance for rapidly changing temperature and irradiance conditions with fast response and less fluctuation, though they require more complex hardware.
Maximum power point tracking techniques a review 37
This document reviews different maximum power point tracking (MPPT) techniques for photovoltaic systems. It discusses several common MPPT methods including perturb and observe and incremental conductance. These techniques aim to maximize solar panel output power by tracking the maximum power point under changing environmental conditions. The document provides an overview of the basic principles behind MPPT and reviews prior literature on various MPPT techniques, comparing aspects like implementation complexity, tracking speed, and effectiveness.
MAXIMUM POWER POINT TRACKING TECHNIQUES: A REVIEW
Abstract:Electricity is the world's fastest-growing form of end-use energy consumption. Net electricity generation worldwide will rise by 2.3 percent per year on average till 2035. Renewables are the fastest growing source of new electricity generation. Indian Solar PV Market enjoys its Place in the solar applications following the Infusion of tracking requirements. This paper focuses on the comparative study of maximum power point tracking (MPPT) techniques. It has been analysed with different MPPT methods following the same goal of maximizing the PV system output power by tracking the maximum power on every operating condition. In this paper maximum power point tracking techniques are reviewed on basis of simplicity, convergence speed, digital or analogical implementation, sensors required, cost, range of effectiveness, and in other aspects.
Maximum power point tracking techniques a review 37
This document reviews different maximum power point tracking (MPPT) techniques for photovoltaic systems. It discusses several common MPPT methods including perturb and observe and incremental conductance. These techniques aim to maximize solar panel output power by tracking the maximum power point under changing environmental conditions. The document provides an overview of the basic principles behind MPPT and reviews prior literature on various MPPT techniques, comparing aspects like implementation complexity, tracking speed, and effectiveness.
International Journal of Computational Engineering Research(IJCER)
International Journal of Computational Engineering Research(IJCER) is an intentional online Journal in English monthly publishing journal. This Journal publish original research work that contributes significantly to further the scientific knowledge in engineering and Technology
Does price shock in electricity sector correct the consumption
This document summarizes a study that examines whether price shocks in Iran's electricity sector can correct consumption patterns. The authors estimate an econometric model using time series data from 1973-2007. They find that electricity demand has a price elasticity of less than 1, indicating it is a necessary good. As such, shocking prices is not an efficient way to rectify consumption patterns, since demand does not respond much to price changes for necessary goods. They also find little substitution between electricity and gas. The authors conclude that abrupt price changes alone will not effectively change consumption patterns in Iran's electricity sector due to the inelastic nature of demand and lack of substitutes.
Investigation on EM radiations from interconnects in integrated circuits
This document presents an investigation into electromagnetic radiations from interconnects in integrated circuits. It begins with an introduction describing how interconnect behavior becomes more complex as operating frequencies increase. A mathematical model is then developed using Maxwell's equations to model electromagnetic interactions on transmission line structures. Parameters like line spacing, number of tracks, and frequency are modeled. Results from simulations of parallel and stacked transmission lines are discussed. The modeling aims to better understand electromagnetic compatibility issues and minimize disturbances in integrated circuit design.
International Transactions on Electrical Energy Systems - 2021 - Hamza - Impa...
This article reviews the impact of high penetration of photovoltaic (PV) systems in low-voltage distribution networks and assesses various overvoltage mitigation methods. It discusses how excessive PV integration can cause issues like frequency oscillation, rotor angle instability, reverse power flow, power quality issues, voltage fluctuations, and reduced reliability. The article then reviews different overvoltage mitigation strategies in recent research, including reactive power control, energy storage, optimization methods, and hybrid approaches. It provides comparisons of different methods based on their contributions, limitations, and how well they address overvoltages from high PV penetration.
Similar to Нургуль Маматова - Применение модели векторной авторегрессии для анализа потребления электроэнергии (20)
Forecasting of electric consumption in a semiconductor plant using time serie...
Forecasting of electric consumption in a semiconductor plant using time serie...
Voltage sensitivity analysis to determine the optimal integration of distribu...
Voltage sensitivity analysis to determine the optimal integration of distribu...
Determinants of energy efficiency and energy consumption of Eastern Europe po...
Determinants of energy efficiency and energy consumption of Eastern Europe po...
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one of the best energy economics updated 2023 doc 15.docx
one of the best energy economics updated 2023 doc 15.docx
Average dynamical frequency behaviour for multi-area islanded micro-grid netw...
Average dynamical frequency behaviour for multi-area islanded micro-grid netw...
IRJET- Implementation of 3-Phase Electric Springs in Unbalanced Power Sys...
IRJET- Implementation of 3-Phase Electric Springs in Unbalanced Power Sys...
Maximum power point tracking techniques a review 37
Maximum power point tracking techniques a review 37
Maximum power point tracking techniques a review 37
Maximum power point tracking techniques a review 37
International Journal of Computational Engineering Research(IJCER)
International Journal of Computational Engineering Research(IJCER)
Does price shock in electricity sector correct the consumption
Does price shock in electricity sector correct the consumption
Investigation on EM radiations from interconnects in integrated circuits
Investigation on EM radiations from interconnects in integrated circuits
International Transactions on Electrical Energy Systems - 2021 - Hamza - Impa...
International Transactions on Electrical Energy Systems - 2021 - Hamza - Impa...
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The document discusses various economic models related to utility and consumer choice. It introduces concepts like cardinal and ordinal utility and discusses modeling utility as a probability of success. It also discusses simple models of consumer choice that involve choosing a product based on type and brand or type and price. Additionally, it discusses models where neighbors' choices or prices can influence individual choices and mentions discounts and bundles. Graphs are shown comparing product turnover before and after implementing a neighbors effect model.
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3) Exactpro uses automated testing tools like Sailfish and ClearTH to test systems, as well as techniques like formal verification, crowd-sourced testing, and machine learning.
Nikolay Karpov - Evolvable Semantic Platform for Facilitating Knowledge Exchange
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George Moiseev - Classification of E-commerce Websites by Product Categories
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Elena Bruches - The Hybrid Approach to Part-of-Speech Disambiguation
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Marina Danshina - The methodology of automated decryption of znamenny chants
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Edward Klyshinsky - The Corpus of Syntactic Co-occurences: the First Glance
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Valeri Labunets - The bichromatic excitable Schrodinger metamedium
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Artyom Makovetskii - An Efficient Algorithm for Total Variation Denoising
This document summarizes a research paper that analyzes the total variation denoising algorithm. It presents the following key points:
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When I was asked to give a companion lecture in support of ‘The Philosophy of Science’ (https://shorturl.at/4pUXz) I decided not to walk through the detail of the many methodologies in order of use. Instead, I chose to employ a long standing, and ongoing, scientific development as an exemplar. And so, I chose the ever evolving story of Thermodynamics as a scientific investigation at its best.
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Speaker: Diego Blas (IFAE/ICREA)
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Direct Seeded Rice - Climate Smart Agriculture
Direct Seeded Rice - Climate Smart AgricultureInternational Food Policy Research Institute- South Asia Office
PPT on Direct Seeded Rice presented at the three-day 'Training and Validation Workshop on Modules of Climate Smart Agriculture (CSA) Technologies in South Asia' workshop on April 22, 2024.
Randomised Optimisation Algorithms in DAPHNE
Slides from talk:
Aleš Zamuda: Randomised Optimisation Algorithms in DAPHNE .
Austrian-Slovenian HPC Meeting 2024 – ASHPC24, Seeblickhotel Grundlsee in Austria, 10–13 June 2024
https://ashpc.eu/
Compexometric titration/Chelatorphy titration/chelating titration
Classification
Metal ion ion indicators
Masking and demasking reagents
Estimation of Magnisium sulphate
Calcium gluconate
Complexometric Titration/ chelatometry titration/chelating titration, introduction, Types-
1.Direct Titration
2.Back Titration
3.Replacement Titration
4.Indirect Titration
Masking agent, Demasking agents
formation of complex
comparition between masking and demasking agents,
Indicators/Metal ion indicators/ Metallochromic indicators/pM indicators,
Visual Technique,PM indicators (metallochromic), Indicators of pH, Redox Indicators
Instrumental Techniques-Photometry
Potentiometry
Miscellaneous methods.
Complex titration with EDTA.
ESR spectroscopy in liquid food and beverages.pptx
With increasing population, people need to rely on packaged food stuffs. Packaging of food materials requires the preservation of food. There are various methods for the treatment of food to preserve them and irradiation treatment of food is one of them. It is the most common and the most harmless method for the food preservation as it does not alter the necessary micronutrients of food materials. Although irradiated food doesn’t cause any harm to the human health but still the quality assessment of food is required to provide consumers with necessary information about the food. ESR spectroscopy is the most sophisticated way to investigate the quality of the food and the free radicals induced during the processing of the food. ESR spin trapping technique is useful for the detection of highly unstable radicals in the food. The antioxidant capability of liquid food and beverages in mainly performed by spin trapping technique.
Mending Clothing to Support Sustainable Fashion_CIMaR 2024.pdf
Ozturkcan, S., Berndt, A., & Angelakis, A. (2024). Mending clothing to support sustainable fashion. Presented at the 31st Annual Conference by the Consortium for International Marketing Research (CIMaR), 10-13 Jun 2024, University of Gävle, Sweden.
The debris of the ‘last major merger’ is dynamically young
The Milky Way’s (MW) inner stellar halo contains an [Fe/H]-rich component with highly eccentric orbits, often referred to as the
‘last major merger.’ Hypotheses for the origin of this component include Gaia-Sausage/Enceladus (GSE), where the progenitor
collided with the MW proto-disc 8–11 Gyr ago, and the Virgo Radial Merger (VRM), where the progenitor collided with the
MW disc within the last 3 Gyr. These two scenarios make different predictions about observable structure in local phase space,
because the morphology of debris depends on how long it has had to phase mix. The recently identified phase-space folds in Gaia
DR3 have positive caustic velocities, making them fundamentally different than the phase-mixed chevrons found in simulations
at late times. Roughly 20 per cent of the stars in the prograde local stellar halo are associated with the observed caustics. Based
on a simple phase-mixing model, the observed number of caustics are consistent with a merger that occurred 1–2 Gyr ago.
We also compare the observed phase-space distribution to FIRE-2 Latte simulations of GSE-like mergers, using a quantitative
measurement of phase mixing (2D causticality). The observed local phase-space distribution best matches the simulated data
1–2 Gyr after collision, and certainly not later than 3 Gyr. This is further evidence that the progenitor of the ‘last major merger’
did not collide with the MW proto-disc at early times, as is thought for the GSE, but instead collided with the MW disc within
the last few Gyr, consistent with the body of work surrounding the VRM.
The cost of acquiring information by natural selection
This is a short talk that I gave at the Banff International Research Station workshop on Modeling and Theory in Population Biology. The idea is to try to understand how the burden of natural selection relates to the amount of information that selection puts into the genome.
It's based on the first part of this research paper:
The cost of information acquisition by natural selection
Ryan Seamus McGee, Olivia Kosterlitz, Artem Kaznatcheev, Benjamin Kerr, Carl T. Bergstrom
bioRxiv 2022.07.02.498577; doi: https://doi.org/10.1101/2022.07.02.498577
Immersive Learning That Works: Research Grounding and Paths Forward
We will metaverse into the essence of immersive learning, into its three dimensions and conceptual models. This approach encompasses elements from teaching methodologies to social involvement, through organizational concerns and technologies. Challenging the perception of learning as knowledge transfer, we introduce a 'Uses, Practices & Strategies' model operationalized by the 'Immersive Learning Brain' and ‘Immersion Cube’ frameworks. This approach offers a comprehensive guide through the intricacies of immersive educational experiences and spotlighting research frontiers, along the immersion dimensions of system, narrative, and agency. Our discourse extends to stakeholders beyond the academic sphere, addressing the interests of technologists, instructional designers, and policymakers. We span various contexts, from formal education to organizational transformation to the new horizon of an AI-pervasive society. This keynote aims to unite the iLRN community in a collaborative journey towards a future where immersive learning research and practice coalesce, paving the way for innovative educational research and practice landscapes.
Gadgets for management of stored product pests_Dr.UPR.pdf
Insectsplayamajorroleinthedeteriorationoffoodgrainscausingbothquantitativeandqualitativelosses
Wellprovedthatnogranariescanbefilledwithgrainswithoutinsectsastheharvestedproducecontainegg(or)larvae(or)pupae(or)adultinsectinthembecauseoffieldcarryoverinfestationwhichcannotbeavoidedindevelopingcountrieslikeIndia
Simpletechnologiesfortimelydetectionofinsectsinthestoredproduceandtherebyplantimelycontrolmeasures
Farming systems analysis: what have we learnt?.pptx
Presentation given at the official farewell of Prof Ken Gillet at Wageningen on 13 June 2024
Pests of Storage_Identification_Dr.UPR.pdf
InIndia-post-harvestlosses-unscientificstorage,insects,rodents,micro-organismsetc.,accountforabout10percentoftotalfoodgrains
Graininfestation
Directdamage
Indirectly
•theexuviae,skin,deadinsects
•theirexcretawhichmakefoodunfitforhumanconsumption
About600speciesofinsectshavebeenassociatedwithstoredgrainproducts
100speciesofinsectpestsofstoredproductscauseeconomiclosses
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Нургуль Маматова - Применение модели векторной авторегрессии для анализа потребления электроэнергии
- 1. A VAR ANALYSIS OF ELECTRICITY CONSUMPTION Nurgul Mamatova Higher School of Economics Department of Statistics, Data Analysis and Demography Moscow, Russia, nurgul.mamatova@gmail.com
- 2. OBJECTIVE This study was conducted to: - Determine the relationship between electricity consumption and other factors - Find out how a shock to the variables affect each other - Estimate the policy of the government in electricity consumption METHODOLOGY -First, we use statistical tests: Unit root test for cointegration (Augmented Dickey- Fuller test), Granger-causality tests. - A VAR for a system of N=3 runs 3 equations where in each case 1 lags of the own and other variables are included.
- 3. RESULTS Table 1. Variance Decomposition of Y: Period T X Y 1 0.000 0.000 100.0 2 0.803 0.118 99.078 3 1.731 1.207 97.061 4 2.517 1.250 96.232 5 11.137 2.263 84.600 To determine the relative importance of electricity tariffs, we perform a variance decomposition of the VAR model. Tariff shocks do not lead to a changes in consumption during 5 years after the shock, but from the 5th year a shock has significant impacts. Analysis of the impulse response function determines the changes in the variable shocks, we see that shocks in tariffs after the 5th year leads to a significant reduction in electricity consumption, and returns to the previous level only on the 21th year. As a result,we can conclude that the effect of the tariffs policy for the reduction electricity consumption in 2014 year, can be reached after 2019 year. Picture1: Impulse Response Analysis