2019 IEEE International Scientific-Practical Conference Problems of Infocommunications, Science and Technology (PIC S&T)最新文献_第8页

Statistical Simulation and Processing of Self-Similar Traffic 自相似流量的统计仿真与处理

2019 IEEE International Scientific-Practical Conference Problems of Infocommunications, Science and Technology (PIC S&T) Pub Date : 2019-10-01 DOI: 10.1109/PICST47496.2019.9061428

A. Pashko, V. Tretynyk

引用次数: 0

Analysis of the Passive Fragments Influence in Broadband Signals with Manipulated Information Entropy on the Data Transmission Reliability 信息熵被操纵的宽带信号中无源碎片对数据传输可靠性的影响分析

2019 IEEE International Scientific-Practical Conference Problems of Infocommunications, Science and Technology (PIC S&T) Pub Date : 2019-10-01 DOI: 10.1109/PICST47496.2019.9061276

S. Melnychuk, I. Manuliak

{"title":"Analysis of the Passive Fragments Influence in Broadband Signals with Manipulated Information Entropy on the Data Transmission Reliability","authors":"S. Melnychuk, I. Manuliak","doi":"10.1109/PICST47496.2019.9061276","DOIUrl":"https://doi.org/10.1109/PICST47496.2019.9061276","url":null,"abstract":"Current methods of digitally processing communication signals, which are distorted in the computer systems communication channels, are often based on the use of amplitude, phase and spectral characteristics. Correlation methods are also used to ensure immunity. A common disadvantage of these methods is the need for significant computational cost. One of the partial solutions to the described problem may be to use the signals probabilistic characteristics, in particular information entropy. This approach is based on the representation of digital message bits to the corresponding fragments of broadband signals with manipulated information entropy. In fact, signals are formed on the basis of random processes with normal distribution of possible states. The use of passive fragments in such signals can reduce the energy cost of data transmission. When passing through a communication channel, passive fragments are filled with their own channel noise. As a result, the channel's own noise extends the number of possible signal amplitude states and can be used to improve the resolution. According to the results of studies, the dependence of the probability of distortion of the information message binary symbol on the normalized signal/noise ratio is obtained. It is shown that the use of passive fragments improves noise immunity by 3-4 dB within the normalized signal/noise ratio at the input from -5 dB to 14 dB. However, at 14 dB or more, noise immunity worsens. Thus, the main scope of the proposed method can be problematic channels with low signal/noise ratio.","PeriodicalId":6764,"journal":{"name":"2019 IEEE International Scientific-Practical Conference Problems of Infocommunications, Science and Technology (PIC S&T)","volume":"2 1","pages":"567-570"},"PeriodicalIF":0.0,"publicationDate":"2019-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"84497832","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Assessment of the Reliability of a Human Operator in Access Systems to Information Resources 信息资源访问系统中人工操作员可靠性评估

2019 IEEE International Scientific-Practical Conference Problems of Infocommunications, Science and Technology (PIC S&T) Pub Date : 2019-10-01 DOI: 10.1109/PICST47496.2019.9061495

E. Lavrov, Olga Lavrova, N. Pasko, V. Kyzenko, N. Savina

引用次数: 1

Chua’s Circuit with Time-Depended Variable Capacitances and Its Synchronization 时变电容蔡氏电路及其同步

2019 IEEE International Scientific-Practical Conference Problems of Infocommunications, Science and Technology (PIC S&T) Pub Date : 2019-10-01 DOI: 10.1109/PICST47496.2019.9061531

Roman Voliansky, O. Sadovoi, Yuliia Sokhina, Iurii Shramko, M. Pushkar

{"title":"Chua’s Circuit with Time-Depended Variable Capacitances and Its Synchronization","authors":"Roman Voliansky, O. Sadovoi, Yuliia Sokhina, Iurii Shramko, M. Pushkar","doi":"10.1109/PICST47496.2019.9061531","DOIUrl":"https://doi.org/10.1109/PICST47496.2019.9061531","url":null,"abstract":"The paper deals with the study of the parametrically driven Chua’s circuit. We use Lagrangian formalism together with Kirchhoff rules to perform modeling of parametrically driven Chua’s circuit. Such an approach allows us to represent the dynamic of Chua’s circuit by different state variables. This dynamic is described by differential equations in general form for some time-depended boundary functions, which describe the changing of capacitances. Thus, we define a general model for parametrically driven Chua’s circuit. Then this model is used to study Chua’s circuit dynamic with harmonically changed capacitors. We use numerical methods to solve differential equations of modified Chua’s circuit and prove its difference from classical Chua’s circuit. This difference is proven in time and frequency domains. Our studies show that chaotic oscillations in modified Chua’s circuit are nonlinear ones in the time domain and they have high-frequency harmonics in its harmonic spectrum. We plot 3D attractors of modified and classical Chua’s circuits, which prove circuits’ difference as well. We offer to avoid considering nonlinear functions while the synchronization controller is being designed by using minimal and maximal values of these functions only and constructing an interval model for Chua’s circuit. Combination of this model and feedback linearization methods allows us to design a simple sliding mode feedback controller, which transform the dynamic of Chua’s circuit into Brunovsky form. We use the simplest first order sliding mode controller in the control system feedforward to perform synchronization of the transformed object’s dynamic with an external signal.","PeriodicalId":6764,"journal":{"name":"2019 IEEE International Scientific-Practical Conference Problems of Infocommunications, Science and Technology (PIC S&T)","volume":"104 1","pages":"794-798"},"PeriodicalIF":0.0,"publicationDate":"2019-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"88968084","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Load-Balancing Fast ReRouting Model with Providing Fair Priority-Based Traffic Policing 基于公平优先级流量监管的负载均衡快速重路由模型

2019 IEEE International Scientific-Practical Conference Problems of Infocommunications, Science and Technology (PIC S&T) Pub Date : 2019-10-01 DOI: 10.1109/PICST47496.2019.9061303

Oleksandr V Lemeshko, M. Yevdokymenko, Oleksandra Yeremenko

引用次数: 1

Excitation of the Wave TE01 in a Circular Waveguide by Means of the Higher Oscillations of an Open Resonator 开腔高振荡对圆波导中TE01波的激发

2019 IEEE International Scientific-Practical Conference Problems of Infocommunications, Science and Technology (PIC S&T) Pub Date : 2019-10-01 DOI: 10.1109/PICST47496.2019.9061300

T. Narytnik, A. May, I. Kuzmichev, A. Kogut, A. Popkov

{"title":"Excitation of the Wave TE01 in a Circular Waveguide by Means of the Higher Oscillations of an Open Resonator","authors":"T. Narytnik, A. May, I. Kuzmichev, A. Kogut, A. Popkov","doi":"10.1109/PICST47496.2019.9061300","DOIUrl":"https://doi.org/10.1109/PICST47496.2019.9061300","url":null,"abstract":"The paper analyses the excitation efficiency of the TE01 wave in a segment of the circular waveguide that is made in the center of one of the mirrors of the open resonator (OR) with the help of the higher order modes ТЕМ11q (in the Lagerr-Gauss functions) and TEM30q (in the Hermite-Gauss functions) and the degenerate mode TEM*11q. All calculations were carried out taking into account the vector nature of the electric field. The analysis results established that the maximum excitation efficiency of the TE01 wave in a circular waveguide using the TEM11q mode is 0.161. The excitation efficiency of the same wave using the TEM30q oscillation is equal to 0.121. When the considered wave was excited by using only the central part of the TEM*11q mode (in the Lagerr-Gauss functions) the maximum excitation efficiency of the TE01 wave grew up to 1. The maximum excitation efficiency of the same wave with the help of the central part of the TEM*11q oscillation (in the Hermite-Gauss functions) is slightly lower and amounts to 0.954. The amplitude distribution of the field of the considered wave takes the form of a ring in the mirror of the OR.","PeriodicalId":6764,"journal":{"name":"2019 IEEE International Scientific-Practical Conference Problems of Infocommunications, Science and Technology (PIC S&T)","volume":"373 1","pages":"575-579"},"PeriodicalIF":0.0,"publicationDate":"2019-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"80512476","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Development of Models for Predicting the Nickel Exchange Price with the Necessary Accuracy for Metal Trading Companies 金属贸易公司镍交易价格必要精度预测模型的建立

2019 IEEE International Scientific-Practical Conference Problems of Infocommunications, Science and Technology (PIC S&T) Pub Date : 2019-10-01 DOI: 10.1109/PICST47496.2019.9061485

Karen Paityan

{"title":"Development of Models for Predicting the Nickel Exchange Price with the Necessary Accuracy for Metal Trading Companies","authors":"Karen Paityan","doi":"10.1109/PICST47496.2019.9061485","DOIUrl":"https://doi.org/10.1109/PICST47496.2019.9061485","url":null,"abstract":"The state of the world market of metals is one of the main indicators of the global economy state as a whole, as it is a raw material that is actively used in the information and communication technologies. This explains the urgency of the challenges companies in this sector are facing. One of these is the prediction of metal prices to make the right decisions in the industry. The article aims to en light a strategy, which implies the necessary steps for forecasting and presents a search for a suitable forecasting model, the accuracy of which satisfies the goals of steel trading companies. Firstly, the authors analyze the forecast and its accuracy based on common statistical forecasting models, such as the pair regression equation or a linear function for a time series, models reduced to the linear ones, namely, the polynomials of 2, 3 and 4 degrees, etc. Further, the author presents a quality criterion of forecasting for stock metals prices to support the decisions made by the steel trader. It is this criterion that proved the need to develop the most accurate forecasting models, which was actually done. New models are based on both technical and fundamental analysis of stock quotes of metals, and have the accuracy necessary to be applied in practice by steel trading companies to trade successfully.","PeriodicalId":6764,"journal":{"name":"2019 IEEE International Scientific-Practical Conference Problems of Infocommunications, Science and Technology (PIC S&T)","volume":"23 1","pages":"907-912"},"PeriodicalIF":0.0,"publicationDate":"2019-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"78794926","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Sentiment Analysis of User Responses of Tourist Services 旅游服务用户反应的情感分析

2019 IEEE International Scientific-Practical Conference Problems of Infocommunications, Science and Technology (PIC S&T) Pub Date : 2019-10-01 DOI: 10.1109/PICST47496.2019.9061470

N. Kunanets, Y. Oliinyk, A. Rzheuskyi, O. Artemenko

引用次数: 1

Using Kurtosis for Objective Assessment of the Musical Signals Clipping Degree 用峰度客观评价音乐信号裁剪程度

2019 IEEE International Scientific-Practical Conference Problems of Infocommunications, Science and Technology (PIC S&T) Pub Date : 2019-10-01 DOI: 10.1109/PICST47496.2019.9061420

A. Prodeus, I. Kotvytskyi, Alexander Grebin

引用次数: 2

Mathematical Support of the Information System for Managing the Technological Process of Polymerization 聚合工艺过程管理信息系统的数学支持

2019 IEEE International Scientific-Practical Conference Problems of Infocommunications, Science and Technology (PIC S&T) Pub Date : 2019-10-01 DOI: 10.1109/PICST47496.2019.9061570

Taras Chaikivskyi, Irena Nykulyshyn

引用次数: 1