The Research of Electronic Transformer Data Synchronization Method Based on Newton Interpolation

2014 ◽  
Vol 1070-1072 ◽  
pp. 1413-1417
Author(s):  
Tong Yin Liu ◽  
Liang Gao ◽  
Yong Dong Zhang
Keyword(s):  
Transient State ◽  
Maximum Error ◽  
Data Synchronization ◽  
Newton Interpolation ◽  
Electronic Transformer ◽  
Impulsive Synchronization ◽  
Advantages And Disadvantages ◽  
Equal Interval ◽  
Synchronization Method ◽  
Interval Sampling

Data synchronization of electronic instrument transformer is introduced. Synchronization method commonly used are analyzed in aspects of their advantages and disadvantages, such as interpolation synchronization, impulsive synchronization method; Then, a new approach based on Newton interpolation is presented, and the simulation and error analysis are given. The theoretical analysis results show that this method can reach to the same precision with Lagrange interpolation which is accurate in synchronization of harmonic components and obtain the synchronized data fast. Finally this paper sets equal interval sampling and non-equal interval sampling data, and then calculates maximum error in the case of the steady state and transient state respectively by using Matlab. The simulation results proved the feasibility of this method and its engineering practical value.

A Secure and Moderate Data Synchronization Method Based on Network Isolation

2020 ◽  
pp. 623-633
Author(s):  
Bing Zhang ◽  
Zhiyong Guo ◽  
Yangdan Ni ◽  
Meng Yang ◽  
Ruiying Cheng ◽  
...  
Keyword(s):  
Data Synchronization ◽  
Synchronization Method

EMG SIGNAL DENOISING USING ADAPTIVE FILTERS THROUGH HYBRID OPTIMIZATION ALGORITHMS

2020 ◽  
pp. 2150009
Author(s):  
Bhattiprolu Nagasirisha ◽  
V. V. K. D. V. Prasad
Keyword(s):  
Adaptive Filters ◽  
Signal To Noise Ratio ◽  
Optimization Algorithms ◽  
Maximum Error ◽  
Recursive Least Squares ◽  
Signal Denoising ◽  
Recording Equipment ◽  
Advantages And Disadvantages ◽  
Emg Signal ◽  
Signal Features

Electromyography (EMG) signal recording equipment is comparatively modern. Still, there are enough restrictions in detection, recording, and characterization of EMG signals because of nonlinearity in the equipment, which leads to noise components. The most commonly affecting artifacts are Power Line Interference (PLI-Noise), Baseline Wander noise (BW-Noise), and Electrocardiogram noise (ECG-Noise). Adaptive filters are advanced and effective solutions for EMG signal denoising, but the improper tuning of filter coefficients leads to noise components in the denoised EMG signal. This defect in adaptive filters triggers or motivates us to optimize the filter coefficients with existing meta-heuristics optimization algorithms. In this paper, Least Mean Squares (LMS) filter and Recursive Least Squares (RLS) adaptive filter coefficients are optimized with a new Hybrid Firefly–Particle Swarm Optimization (HFPSO) by taking the advantages and disadvantages of both the algorithms. Experiments are conducted with the proposed HFPSO and it proved better in EMG signal denoising in terms of the measured parameters like signal-to-noise ratio (SNR) in dB, maximum error (ME), mean square error (MSE), etc. In the second part of the work, the denoised EMG signal features are extracted for the diagnosis of diseases related to myopathy and neuropathy as EMG signal reflects the neuromuscular function and EMG signal examination may contribute to the diagnosis of muscle disorder linked to myopathy and neuropathy.

scholarly journals Perilaku Penggunaan Aplikasi Sitasi Mahasiswa (Studi Kasus di Program Studi Pascasarjana Fikom Unpad 2018)

2019 ◽  
Vol 3 (1) ◽  
pp. 74
Author(s):  
Risa Nurisani ◽  
Eko Retno Wulandari ◽  
Yanti Sundari
Keyword(s):  
Internet Access ◽  
Data Synchronization ◽  
The Internet ◽  
Science Students ◽  
Advantages And Disadvantages ◽  
Metadata File ◽  
Bibliographic Data ◽  
Data Banks

Segala bentuk kutipan yang dicantumkan penulis di dalam tulisannya perlu dicantumkan sitasi dan referensinya. Melalui penggunaan aplikasi sitasi, penulis dimudahkan dengan bank data bibliografi dan pencantuman daftar pustaka. Studi ini menjabarkan perilaku penggunaan aplikasi sitasi mahasiswa program studi magister Ilmu Komunikasi Fikom Unpad 2018 sebanyak 49 orang. Hasil studi menunjukkan bahwa hanya setengah dari jumlah total mahasiswa yang telah aktif menggunakan aplikas sitasi. Mendeley adalah aplikasi sitasi yang paling banyak digunakan dibanding aplikasi sitasi lainnya. Alasan utama mahasiswa lainnya belum menggunakan aplikasi sitasi adalah perlunya pendampingan dan mereka terbiasa mencantumkan sitasi secara manual. Hampir sebagian dari mereka mulai menggunakan aplikasi sitasi baru-baru ini yaitu saat mengambil perkuliahan magister dan disarankan oleh dosen di kelas. Sedangkan kesulitan dirasakan mahasiswa pada awal penggunaan aplikasi sitasi. Studi juga mengungkapkan kelebihan dan kekurangan dari aplikasi yang digunakan, serta saran dan harapan mahasiswa terkait penggunaan aplikasi sitasi. Mendeley sebagai aplikasi sitasi yang paling banyak digunakan dinilai mudah setelah sering digunakan, dapat menyimpan file artikel yang telah diunduh, otomatis membaca metadata file yang diunggah di dalam Mendeley, dan dapat menelusur referensi yang telah ada di Internet melalui Mendeley. Namun kekurangannya adalah pengguna perlu memahami perlunya parafrase dan penulisan kapitalisasi metadata pada gaya sitasi yang disyaratkan, memerlukan akses internet untuk sinkronisasi data, dan sering error. Sedangkan saran dan harapan terkait penggunaan aplikasi sitasi ini di antaranya adalah perlunya diagendakan pelatihan dan pendampingan penggunaan aplikasi sitasi secara intensif di awal perkuliahan serta perlunya mahasiswa membiasakan diri dalam menggunakan aplikasi sitasi.All forms of quotations that the author lists in his writing need to include citations and references. Through the use of citation applications, the author is facilitated with bibliographic data banks and the inclusion of bibliography. This study outlines the behavior of 49 people using the citation application for 2018 Unpad Communication Science students in Master of Communication Science. The results of the study show that only half of the total number of students who have been active uses citation applications. Mendeley is the most widely used citation application compared to other citation applications. The main reason other students have not used the citation application is the need for mentoring and they are accustomed to listing citations manually. Nearly some of them started using the citation application recently, namely when taking master lectures and suggested by lecturers in the class. While the difficulties felt by students at the beginning of the use of citation applications. The study also revealed the advantages and disadvantages of the application used, as well as suggestions and expectations of students regarding the use of citation applications. Mendeley as the most used citation application is considered easy after being used frequently, can save downloaded article files, automatically reads the metadata of files uploaded in Mendeley, and can search for references that already exist on the Internet through Mendeley. But the disadvantage is that users need to understand the need for paraphrasing and writing capitalization of metadata in the required citation styles, requiring internet access for data synchronization, and frequent errors. While the suggestions and expectations related to the use of this citation application include the need to schedule training and assistance in the use of intensive citation applications at the beginning of the lecture and the need for students to get used to using the citation application.

scholarly journals A High-Precision Energy-Efficient GPS Time-Sync Method for High-Density Seismic Surveys

2020 ◽  
Vol 10 (11) ◽  
pp. 3768
Author(s):  
Ruyun Tian ◽  
Junjie Zhang ◽  
Shuai Zhang ◽  
Longxu Wang ◽  
Hongyuan Yang ◽  
...  
Keyword(s):  
High Precision ◽  
Seismic Data ◽  
Energy Efficient ◽  
Time Synchronization ◽  
High Density ◽  
Seismic Survey ◽  
Data Synchronization ◽  
Synchronization Method ◽  
Synchronization Accuracy ◽  
Synchronization Performance

Large numbers of seismic channels and high-density energy-efficient acquisition systems are the development trend of seismic instruments and have attracted high R&D interests in recent years. The combination of remote sensing and wireless sensor network technology provides superior observation capabilities for high-density seismic exploration. However, large-scale and multi-node acquisition methods place higher requirements on time synchronization performance. Seismic data with poor time synchronization will cause considerable errors in the interpretation of seismic data and even have no practical significance. Thus, the strict time synchronization performance is the prerequisite and basis for the application of cable-less storage seismograph in high-density seismic array applications. The existing time synchronization methods have high power consumption and poor time synchronization accuracy, which is not suitable for the long-time task. In addition, these methods are affected by the number of nodes and the distance. This paper presents an energy-efficient time-sharing indexed interpolation intercept method for the seismic data synchronization. The time synchronization method uses the high-precision TCXO as the main clock and records GPS time in the SD card at intervals to achieve the high-precision time-stamp for the seismic data. Then the seismic data is intercepted intermittently based on precise time stamps, which achieves the strict seismic data synchronization. Performance analysis shows that the time synchronization accuracy of the proposed method is 0.6 μs and saves 73% energy of the time-sync periods compared to the common GPS timing method. The field measurement results indicate that the time synchronization accuracy is not associated with the working time and the distance between nodes so that the proposed synchronization method is suitable for the high-density seismic survey.

Analysis of advantages and disadvantages of distance learning

2021 ◽  
Vol 41 (1) ◽  
pp. 26-28
Author(s):  
O. V. Voytovich ◽  
◽  
O. S. Zherebiatiev ◽  
T. Yu. Matylonok ◽  
◽  
...  
Keyword(s):  
Distance Learning ◽  
Sample Size ◽  
Positive Feedback ◽  
Academic Integrity ◽  
Maximum Error ◽  
Self Organization ◽  
Objective Data ◽  
Educational Work ◽  
Advantages And Disadvantages ◽  
Microsoft Office

The introduction of distance learning raised questions of self-organization and self-discipline of the student, the desire and ability of the student to independently acquire knowledge, academic integrity of the student. The effectiveness of distance learning depends on the answers to these questions. Therefore, teachers need to analyze the level of self-preparation of each student and, if necessary, motivate them for intensive independent educational work. To obtain objective data on the readiness and attitude of students to distance learning, as well as in order to establish and analyze the advantages and disadvantages of distance learning as students see them, conducted a voluntary anonymous survey using a questionnaire developed by us. The survey was carried out among the students, who studied the discipline “Microbiology, Virology and Immunology” for one semester in the classroom, and the next semester studied remotely using the services of the Microsoft Office 365 platform. Indicators of representativeness of the sample: sample size — 24 respondents, which amounted to 54.5 % of students; the maximum error is 10 % with a probability of 0.90. When analyzing the answers to the questionnaires, we revealed the advantage of positive feedback from students on the introduced distance learning form. Among the positive aspects, students consider remote lecturing and access to lectures read on the MS Teams service of the Microsoft Office 365 platform. Among the disadvantages of distance learning, students especially note the long stay at the monitor and the lack of practical work, especially when studying the discipline “Microbiology, Virology and Immunology”.

scholarly journals Finite-Element Simulation for Thermal Modeling of a Cell in an Adiabatic Calorimeter

Energies ◽  
2020 ◽  
Vol 13 (9) ◽  
pp. 2300
Author(s):  
José Eli Eduardo González-Durán ◽  
Juvenal Rodríguez-Reséndiz ◽  
Juan Manuel Olivares Ramirez ◽  
Marco Antonio Zamora-Antuñano ◽  
Leonel Lira-Cortes
Keyword(s):  
Heat Transfer ◽  
Finite Element ◽  
Numerical Analysis ◽  
Initial Conditions ◽  
Physical Phenomenon ◽  
Mathematical Formulation ◽  
Spherical Geometry ◽  
Transient State ◽  
Maximum Error ◽  
Adiabatic Calorimeter

This research obtains a mathematical formulation to determine the heat transfer in a transient state, in a calorimeter cell, considering an adiabatic system. The development of the cell was established and the mathematical model was transiently solved, which approximated the physical phenomenon under the cell operation. A numerical method for complex geometries was used to validate performance. The results obtained in the transient heat transfer in a cylinder under boundary and initial conditions were compared using an analytical solution and numerical analysis employing the finite-element method with commercial software. The study from the temperature distribution can afford, selection between a cylindrical and spherical geometry, design criteria that are generated by changing parameters such as dimension, temperature, and working fluids to develop an adiabatic calorimeter to measure the heat capacity in fluids. We show the mathematical solution with its initial and boundary conditions as well as a comparison with a numerical solution for a cylindrical cell with a maximum error from 0.075% in the temperature value, along with a theoretical and numerical analysis for a temperature difference of 1 °C.

Design and Development of the Architecture Market Management Information System

2013 ◽  
Vol 756-759 ◽  
pp. 1084-1087
Author(s):  
Zhi Jiang Feng ◽  
Jian Chen Liu ◽  
Li Min Wang ◽  
Chang Li Yan ◽  
Ping Zhang
Keyword(s):  
Information System ◽  
Management Information System ◽  
Flow Chart ◽  
Management Information ◽  
Design And Development ◽  
Advantages And Disadvantages ◽  
Synchronization Method ◽  
Market Management ◽  
Access Database

The architecture market management information is the basis of improving the administration efficiency and the supervision ability, and reduce the manage cost. In the design of the inspection module, zml xmlhttp is limited to the environmental and cost, so it is necessary to use the remoted access database synchronization. This article discusses various advantages and disadvantages of the access database synchronization method, and propose using the XMLHttp + XML to give the flow chart and key code.

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