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2021 Ural Symposium on Biomedical Engineering, Radioelectronics and information Technology, USBEREIT 2021

作者： Svetlakov, Mikhail Hodashinsky, Ilya Slezkin, Artem Security of Computer Systems Tomsk State University of Control Systems and Radioelectronics Department of Complex Information Tomsk Russia

ISBN: (纸本)9781728176918

Biometric systems have numerous advantages over traditional authentication methods and should be taken into account: uniqueness, fraud-resistance, portability, convenience of use, scalability, possibility of reliable attendance recording. Use of electroencephalography (EEG) data as biometric factor can keep all these benefits and add new ones. This paper provides insight how EEG based biometrics identification ability can be affected by the number of participants, their gender and age. In order to study aforementioned factor's influence Leipzig Study for Mind-Body-Emotion Interactions (LEMON) resting state (both eyes-open state and eyes-closed state) EEG dataset were used. After few preprocessing adjustments and applying discrete wavelet transform as time-frequency domain feature extraction method resulting dataset were used for classification task. The testing was conducted in 5-fold cross-validation mode using the shallow model, Linear Support Vector Classifier. From experiment results following conclusions were made: increased number of participants decreased classifier accuracy, with age increase accuracy steadily improved, gender effects on accuracy are inconclusive. © 2021 IEEE.

关键词： Biometrics

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Designing a Pulse Shaper of Arbitrary Duration 12

Designing a Pulse Shaper of Arbitrary Duration

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12th IEEE International Conference on Intelligent Data Acquisition and Advanced Computing systems: Technology and Applications, IDAACS 2023

作者： Osolinskyi, Oleksandr Kochan, Volodymyr Sachenko, Anatoliy Zahorodnia, Diana West Ukrainian National University Department for Information Computer Systems and Control Ternopil46020 Ukraine

ISBN: (纸本)9798350358056

The use of features of the internal circuitry of integrated circuits (ICs), when designing pulse shapers based on transistor-transistor logic (TTL) ICs, provides the maximum steepness of the generated pulse edges with a simple circuit. At the same time, unlike other circuits, the duration of the generated pulses has almost no effect on the duration of the generated pulse edges. The duration of both the leading and trailing edges of the generated pulses is close to the minimum possible triggering time, i.e., the triggering time of one logic element. For integrated circuits of the TTL the conventional edge duration does not exceed 20 nanoseconds. © 2023 IEEE.

关键词： arbitrary duration pulse shaper transistor-transistor logic

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SOME EFFICIENT ALGORITHMS FOR A CLASS OF ABSTRACT OPTIMIZATION PROBLEMS ARISING IN OPTIMAL control

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IEEE TRANSACTIONS ON AUTOMATIC control 1969年第6期AC14卷 640-+页

作者： BARR, RO GILBERT, EG Department of Electrical Engineering and Systems Science Michigan State University East Lansing MI USA Computer Information and Control Engineering Program University of Michigan Ann Arbor MI USA

Three abstract optimization problems are presented along with doubly iterative algorithms for their numerical solution. These algorithms are generalizations of particular algorithms described by Barr and Gilbert [19], [21] and Fujisawa and Yasuda [22]. The supporting theory is fully developed along with proofs of convergence. Practical aspects of computations are considered and procedures which insure rapid convergence are discussed. Two applications to discrete-time optimal control problems are described.

关键词： Optimal control Iterative algorithms Projection algorithms Dynamic programming Nonlinear equations Gradient methods Functional programming Boundary conditions Military computing Convergence of numerical methods

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On the Efficiency of Economic Activity of Small Enterprises Operating in the Field of Ground Passenger Transportation (Code 34 in All-Russian Classifier of Economic Activities OKVED2) 17

On the Efficiency of Economic Activity of Small Enterprises ...

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17th International Conference on Management of Large-Scale System Development, MLSD 2024

作者： Promakhina, Irina Federal Research Center 'Computer Science and Control' of the Ras Department of Information Systems Moscow Russia

ISBN: (纸本)9798350375718

The aim of the work was to identify factors affecting the total revenue of regional small enterprises operating in the field of ground passenger transportation, and to evaluate the efficiency of these enterprises. This was done using production function and stochastic frontier models. The statistics were taken from the Complete statistical survey of small and medium-sized businesses in 2020. © 2024 IEEE.

关键词： Economic efficiency

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AN APPROACH TO NONLINEAR FEEDBACK-control WITH APPLICATIONS TO ROBOTICS

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IEEE TRANSACTIONS ON systems MAN AND CYBERNETICS 1984年第6期14卷 879-884页

作者： GILBERT, EG HA, IJ Department of AeroSpace Engineering Robot Systems Division University of Michigan Ann Arbor MI USA Computer Information and Control Engineering Program Robot Systems Division College of Engineering University of Michigan Ann Arbor MI USA

A control problem involving a mechanical system with generalized coordinates q ∈ R m is considered. The error in tracking a desired input y d ∈ R p is e = E (q,y d )∈ R m . If E satisfies simple conditions, it leads to a nonlinear control law that assures e (t)→0 as t →∞. The law is robust in that small changes in it do not produce large steady-state errors or loss of stability. In this theory a unified framework is presented for treating a number of problems in the control of mechanical manipulators.

关键词： Manipulators Measurement uncertainty Vectors Joints Approximation methods Feedback control

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String Stability Preserving Adaptive Spacing Policy for Handling Saturation in Heterogeneous Vehicle Platoons

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IFAC-PapersOnLine 2017年第1期50卷 8525-8530页

作者： Tóth J. Rödönyi G. Department of Control Engineering and Information Technology Budapest University of Technology and Economics Hungary Systems and Control Laboratory Institute for Computer Science and Control Hungarian Academy of Sciences Hungary

The saturation problem in heterogeneous vehicle platoons is considered. With leader and predecessor following control architecture, actuator saturation in a vehicle causes its followers to collide due to their link with the faster leader vehicle. A modification of the actual leader and predecessor following control method is proposed that automatically detects the saturation of other vehicles ahead, and reconfigures the tracking strategy to avoid collisions. The method is based on the construction of a virtual spacing policy for a virtual predecessor vehicle model. The proposed controller does not require additional measurements or extra communication, and is designed to satisfy string stability requirements. The results are verified by simulation examples. © 2017

关键词： Adaptive spacing policy Collision Leader Platooning predecessor following Saturation String stability

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Algorithmic realization of system for short-term weather forecasting 07

Algorithmic realization of system for short-term weather for...

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International Conference on computer systems and Technologies and Workshop for PhD Students in Computing, CompSysTech '07

作者： Simeonov, Ivan Kilifarev, Hristo Ilarionov, Rajcho Department Computer Systems and Technologies Technical University of Gabrovo Bulgaria Department of Automation Information and Control Systems Technical University of Gabrovo Bulgaria

ISBN: (纸本)9789549641509

In this paper is presented algorithmic realization of system for short-term weather forecasting, which makes acquisition, processing and visualization of information, related to the parameters temperature, atmospheric pressure, humidity, wind speed and direction. The proposed algorithm is defined from the juxtaposition of the collected statistical data with the currently measured data, on the chosen methods for weather forecasting and the determined correlation between the processed meteorological quantities. The choice of the methods for weather prediction is made according the needed input data and the resources for their realization. © 2007 ACM.

关键词： Weather forecasting

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Formation of attribute spaces using wavelets in automatic classification of explosives 08

Formation of attribute spaces using wavelets in automatic cl...

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9th International Conference on computer systems and Technologies and Workshop for PhD Students in Computing, CompSysTech'08

作者： Shopov, Nikolai Ilarionov, Rajcho Simeonov, Ivan Kilifarev, Hristo Department of Automatics Information and Control Technique University of Food Technologies-Plovdiv Bulgaria Department of Computer Systems and Technologies Technical University of Gabrovo Bulgaria Department of Automation Information and Control Systems Technical University of Gabrovo Bulgaria

ISBN: (纸本)9789549641523

The non-contact automatic on-line classification of explosives is a multi-aspect task. It involves choosing the method of information gathering, planning and conduction of experiments, choosing a classifier, formation of training and control samples, synthesis and reduction of recognition attributes, etc. This paper presents the results of conducted experiments for non-contact ultrasonic information gathering, formation of attribute spaces by means of wavelet transformations and an automatic classification of explosives.

关键词： Wavelet transforms

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Non-contact ultrasound method for identification of yogurt according to its butter content 09

Non-contact ultrasound method for identification of yogurt a...

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International Conference on computer systems and Technologies and Workshop for PhD Students in Computing, CompSysTech'09

作者： Shopov, Nikolay Ilarionov, Raycho Simeonov, Ivan Kilifarev, Hristo Department of Automatics Information and Control Technique University of Food Technologies Plovdiv Bulgaria Department of Computer Systems and Technologies Technical University of Gabrovo Bulgaria Department of Automation Information and Control Systems Technical University of Gabrovo Bulgaria

ISBN: (纸本)9781605589862

In the current paper is proposed an approach for identification of yogurt according to its butter content, based on the methods for recognition of images with receiving of initial information by ultrasound. There are results presented from the made research regarding the ability for synthesis of symptoms for classification by means of discrete wavelet transformation. Classifiers are synthesized with the method "K-nearest-neighbors" (KNN) and are tested with independent control sample. It is realized a classification of yogurt with butter content 1, 2, 3, 3.6 and 5% with accuracy above 94%. © 2009 ACM.

关键词： Nearest neighbor search

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Spreading dynamics of information on online social networks

arXiv

引用

arXiv 2025年

作者： Meng, Fanhui Xie, Jiarong Sun, Jiachen Xu, Cong Zeng, Yutian Wang, Xiangrong Jia, Tao Huang, Shuhong Deng, Youjin Hu, Yanqing School of Systems Science and Engineering Sun Yat-sen University Guangzhou510275 China Center for Computational Communication Research Beijing Normal University Zhuhai519087 China School of Journalism and Communication Beijing Normal University Beijing100875 China School of Computer Science and Engineering Sun Yat-sen University Guangzhou510006 China Department of Statistics and Data Science College of Science Southern University of Science and Technology Shenzhen518055 China College of Mechatronics and Control Engineering Shenzhen University Shenzhen518060 China College of Computer and Information Science Chongqing Normal University Chongqing401331 China College of Computer and Information Science Southwest University Chongqing400715 China Institute of Neuroscience Technical University of Munich Munich80802 Germany Department of Modern Physics University of Science and Technology of China Hefei230026 China MinJiang Collaborative Center for Theoretical Physics College of Physics and Electronic Information Engineering Minjiang University Fuzhou350108 China Center for Complex Flows and Soft Matter Research Southern University of Science and Technology Shenzhen518055 China

Social media is profoundly changing our society with its unprecedented spreading power. Due to the complexity of human behaviors and the diversity of massive messages, the information spreading dynamics are complicated, and the reported mechanisms are different and even controversial. Based on data from mainstream social media platforms, including WeChat, Weibo, and Twitter, cumulatively encompassing a total of 7.45 billion users, we uncover a ubiquitous mechanism that the information spreading dynamics are basically driven by the interplay of social reinforcement and social weakening effects. Accordingly, we propose a concise equation, which, surprisingly, can well describe all the empirical large-scale spreading trajectories. Our theory resolves a number of controversial claims and satisfactorily explains many phenomena previously observed. It also reveals that the highly clustered nature of social networks can lead to rapid and high-frequency information bursts with relatively small coverage per burst. This vital feature enables social media to have a high capacity and diversity for information dissemination, beneficial for its ecological development. © 2025, CC BY.

关键词： Tweets

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