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Reconstruction of a daily gridded snow water equivalent product for the land region above 45° N based on a ridge regression machine learning approach

Donghang Shao, Hongyi Li, Jian Wang, Xiaohua Hao, Tao Che, Wenzheng Ji
2022 Earth System Science Data  
The snow water equivalent (SWE) is an important parameter of surface hydrological and climate systems, and it has a profound impact on Arctic amplification and climate change.  ...  The results show that it is feasible to utilize a ridge regression model based on a machine learning algorithm to prepare SWE products on a global scale.  ...  In this study, we integrated multisource SWE data products of the ridge regression model (RRM) SWE based on the ridge regression model of the machine learning algorithm.  ... 
doi:10.5194/essd-14-795-2022 fatcat:d7hycyquozhn7bmn6wrpkzycsu

Geographical Information System Mapping Based on Android at Equal Senior High School In Lubuklinggau

Joni Karman, Ema Crisdiyanti
2019 IJISTECH (International Journal Of Information System & Technology)  
The results of the study show that the program on the geographic information system mapping on Android based equivalents on Android at Lubuklinggau the geographical information system is expected to be  ...  a solution for the community in finding the location of Senior High Schools in Lubuklinggau.  ...  GIS Application for Mapping High School Equivalent Based on Android in Lubuklinggau The Main Page of Application The main page of application is the initial display of the backend system of GIS Mapping  ... 
doi:10.30645/ijistech.v3i1.33 fatcat:5pnbkk7v5nbzfadtojihprtbyi

Study of Power System Online Dynamic Equivalent Based on Wide Area Measurement System

Zhou Yang, Wang Kui, Xiong Yumin, Zhang Buhan
2012 Energy Procedia  
One way is based on coherency equivalent theory and to use plenty of history data from measurements to obtain coherency information of generators offline and match the dynamic equivalents through real-time  ...  Test on EPRI 8-machine 36bus system shows that dynamic equivalent model of external system can reflect the dynamic behaviors of the original system accurately.  ...  The first two needs details of the power system, while the last one is based on real-time measured data and does not rely on network structure and parameters.  ... 
doi:10.1016/j.egypro.2012.01.273 fatcat:qfztol2fyzap5ed4lwrdzcuoai

Compositional failure-based semantic equivalences for Reo specifications

Mohammad Izadi, Ali Movaghar
2007 Proceedings of the 2007 conference on Specification and verification of component-based systems 6th Joint Meeting of the European Conference on Software Engineering and the ACM SIGSOFT Symposium on the Foundations of Software Engineering - SAVCBS '07  
We show that the failure-based equivalences NDFD and CFFD are congruences with respect to composition operators of Reo.  ...  Reo is a coordination language for modeling component connectors of component-based computing systems.  ...  In this method, the models of components and connectors of a component-based system are reduced with respect to an equivalence relation before building the model of the complete system [5, 6 ].  ... 
doi:10.1145/1292316.1292329 dblp:conf/sigsoft/IzadiM07 fatcat:yxifaepfyfb3hbw2ggxdksy3ay

Rule-based equivalence checking of system-level design descriptions

Hiroaki Yoshida, Masahiro Fujita
2009 2009 International Conference on Communications, Circuits and Systems  
This paper presents our study on rule-based equivalence checking of system-level design descriptions.  ...  The rule-based equivalence checking proves the equivalence of two system-level design descriptions by applying equivalence rules in a bottom-up manner.  ...  The rule-based equivalence checker based on the variable name could not determine the equivalence of two designs because the it could not find the equivalence of some variables due to the change of their  ... 
doi:10.1109/icccas.2009.5250314 fatcat:zuduuigcyvbbrkqjadixhvqgqu

Research on Dynamic Thevenin Equivalence Method Based on Deviation Correction

Wang Ying, Ma Gang, Tang Yi
2017 American Journal of Electrical and Electronic Engineering  
The direction of the correction is determined based on the real-time data, and the parameters of the realtime estimation are obtained by iterative correction of the Thevenin equivalent parameter.  ...  A method based on deviation correction is studied to track Thevenin equivalent parameters. This is an iterative algorithm based on the correction of the amount of deviation.  ...  Dynamic Thevenin Equivalence Method Based on Deviation Correction Principle The study of the Thevenin equivalence method of power systems is usually for a node.  ... 
doi:10.12691/ajeee-5-6-1 fatcat:fm6rvbmuhnbd7hq7jexygft2hq

The Evaluation Model on Interactive Teaching Mode with the Mixed Integer Programming

Sheng-han ZHOU, Zhen-zhong XU, Wen-bing CHANG
2017 DEStech Transactions on Social Science Education and Human Science  
Secondly, a mixed integer programming model based on rough set is established. Then this paper makes the comparison with the K-means clustering analysis method based on rough set.  ...  The paper proposes a mixed integer programming model based on rough set to evaluate the students' grade with the interactive teaching records.  ...  Strong correlation attributes will affect the effectiveness and efficiency of the data. Mining model based on principal component analysis was to reduce the dimension of data.  ... 
doi:10.12783/dtssehs/ermm2017/14682 fatcat:nli7r7wxhbdzfe33rui74ezmcu

Optimization of parameters of neuro-fuzzy model

Lyalya Bakievna Khuzyatova, Lenar Ajratovich Galiullin
2020 Indonesian Journal of Electrical Engineering and Computer Science  
To solve difficult formalized tasks, it is necessary to develop decision support systems - expert systems based on a knowledge base.  ...  Currently, the formation of knowledge bases is relevant for the creation of hybrid technologies - fuzzy neural networks that combine the advantages of neural network models and fuzzy systems.  ...  ACKNOWLEDGEMENTS The work is performed according to the Russian Government Program of Competitive Growth of Kazan Federal University.  ... 
doi:10.11591/ijeecs.v19.i1.pp229-232 fatcat:nagdy5m755gobltv6clplg2hvu

A New Method to Monitor the Primary Neutral Integrity in Multi-Grounded Neutral Systems

Xiangmin Xie, Yuanyuan Sun, Xun Long, Bingwei Zhang
2017 Energies  
The value of the parameter is estimated based on the measured data, and then, the equivalent impedance of the primary neutral groundings can be obtained.  ...  The method is based on the measured voltage and current data at the service transformer, and there is no need to install any signal generators.  ...  The authors appreciate Wilsun Xu at the University of Alberta for the discussion about this work. Author Contributions: Yuanyuan Sun and Xun Long proposed the main idea of the method.  ... 
doi:10.3390/en10030380 fatcat:fpzibcqrcvfzzavuhrd6gcxeiy

State‐based reconstructability analysis

Martin Zwick, Michael S. Johnson
2004 Kybernetes  
of model fit for analyses based on sample data.  ...  We also discuss the interpretation of state-based modeling results for both neutral and directed systems, and address the practical question of how state-based approaches can be used in conjunction with  ...  One of these equivalence classes corresponds to the A:B variable-based structure.  ... 
doi:10.1108/03684920410534092 fatcat:j6dvfvadwvhp3cvmwxbib2jmbq

An adaptive three-bus power system equivalent for estimating voltage stability margin from synchronized phasor measurements

Fengkai Hu, Kai Sun, Alberto Del Rosso, Evangelos Farantatos, Navin Bhatt
2014 2014 IEEE PES General Meeting | Conference & Exposition  
This approach is validated on a three-bus system and the IEEE 39-bus system. Index Terms-parameter estimation; phasor measurement unit; Thevenin equivalent; voltage stability monitoring I.  ...  This paper utilizes an adaptive three-bus power system equivalent for measurement-based voltage stability analysis.  ...  Z 1 , R 2 +jX 2 =Z 2 , and matrices H and Z are formed based on measurement data at n time points of the time window.  ... 
doi:10.1109/pesgm.2014.6939177 fatcat:4iglmgpvs5dnvauc4xeuoxiin4

Improving the accuracy of rule-based equivalence checking of system-level design descriptions by identifying potential internal equivalences

Hiroaki Yoshida, Masahiro Fujita
2009 2009 10th International Symposium on Quality of Electronic Design  
Rule-based equivalence checking of system-level design descriptions proves the equivalence of two system-level design descriptions by applying the equivalence rules in a bottom-up manner.  ...  Since the previous work derives the equivalence of the internal variables based on their names, the method often fails to prove the equivalence when the variable names are changed.  ...  Figure 1 . 1 Examples of rule-based equivalence checking based on the names. Figure 2 .Figure 3 . 23 ExSDG: Extended System Dependence Graph [9] .  ... 
doi:10.1109/isqed.2009.4810322 dblp:conf/isqed/YoshidaF09 fatcat:et3oa3s2znaajht2mfmwqgskui

Optimization of parameters of neuro-fuzzy model

Lyalya Bakievna Khuzyatova, Lenar Ajratovich Galiullin
2020 Indonesian Journal of Electrical Engineering and Computer Science  
To solve difficult formalized tasks, it is necessary to develop decision support systems - expert systems based on a knowledge base.  ...  <p>The questions and problems of the formation of knowledge bases of intelligent man-machine decision support systems are considered. The neuron-fuzzy model used in the work is described.  ...  ACKNOWLEDGEMENTS The work is performed according to the Russian Government Program of Competitive Growth of Kazan Federal University  ... 
doi:10.11591/ijeecs.v17.i3.pp1206-1209 fatcat:4cpt2kc2i5c4bgopybhoaay4d4

Multi-Rate Real-Time Simulation Method Based on the Norton Equivalent

Junjie Zhu, Bingda Zhang
2020 Energies  
method based on the ideal source equivalent.  ...  For the problem of poor accuracy of the existing multi-rate simulation methods, this paper proposes a multi-rate real-time simulation method based on the Norton equivalent, compared with multi-rate simulation  ...  Multi-Rate Real-Time Simulation Based on the Norton Equivalence Multi-Rate Real-Time Simulation Method Based on the Ideal Source Equivalence In the multi-rate real-time simulation of the power system  ... 
doi:10.3390/en13174562 fatcat:iei7aswbqrfjxh3ctmlnicp66y

Defining the parameters of a power transmission line equivalent circuit on the basis of phasor measurements

P Y Kovalenko, A S Berdin
2017 Journal of Physics, Conference Series  
Power system control is based on employing its computational model, the backbone of which is an equivalent circuit.  ...  The method of defining the equivalent circuit parameters based on phasor measurements along with general relations between power system state parameters is proposed.  ...  Acknowledgments The work was supported by Act 211 Government of the Russian Federation, contract № 02.A03.21.0006 and the Ministry of Education and Science of Russian Federation (in the framework of state  ... 
doi:10.1088/1742-6596/870/1/012012 fatcat:u5d5uobzf5d4potfjji2pkrlh4
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