Scientific and Technical Journal of Information Technologies, Mechanics and Optics最新文献

{"title":"Numerical study of the effect of methemoglobin concentration in the blood on the absorption of light by human skin","authors":"A. Belikov, V.Yu. Chuchin","doi":"10.17586/2226-1494-2023-23-4-685-695","DOIUrl":"https://doi.org/10.17586/2226-1494-2023-23-4-685-695","url":null,"abstract":"","PeriodicalId":21700,"journal":{"name":"Scientific and Technical Journal of Information Technologies, Mechanics and Optics","volume":"40 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"75937913","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}

{"title":"Neural network-based method for visual recognition of driver's voice commands using attention mechanism","authors":"Александр Александрович,  Аксёнов1, Елена Витальевна Рюмина, Дмитрий Александрович Рюмин, Денис Викторович Иванько, Алексей Анатольевич Карпов, Alexandr A. Axyonov, Elena V. Ryumina, Dmitry A. Ryumin, Denis V. Ivanko, Alexey Karpov","doi":"10.17586/2226-1494-2023-23-4-767-775","DOIUrl":"https://doi.org/10.17586/2226-1494-2023-23-4-767-775","url":null,"abstract":"Visual speech recognition or automated lip-reading systems actively apply to speech-to-text translation. Video data proves to be useful in multimodal speech recognition systems, particularly when using acoustic data is difficult or not available at all. The main purpose of this study is to improve driver command recognition by analyzing visual information to reduce touch interaction with various vehicle systems (multimedia and navigation systems, phone calls, etc.) while driving. We propose a method of automated lip-reading the driver’s speech while driving based on a deep neural network of 3DResNet18 architecture. Using neural network architecture with bi-directional LSTM model and attention mechanism allows achieving higher recognition accuracy with a slight decrease in performance. Two different variants of neural network architectures for visual speech recognition are proposed and investigated. When using the first neural network architecture, the result of voice recognition of the driver was 77.68 %, which was lower by 5.78 % than when using the second one the accuracy of which was 83.46 %. Performance of the system which is determined by a real-time indicator RTF in the case of the first neural network architecture is equal to 0.076, and the second — RTF is 0.183 which is more than two times higher. The proposed method was tested on the data of multimodal corpus RUSAVIC recorded in the car. Results of the study can be used in systems of audio-visual speech recognition which is recommended in high noise conditions, for example, when driving a vehicle. In addition, the analysis performed allows us to choose the optimal neural network model of visual speech recognition for subsequent incorporation into the assistive system based on a mobile device.","PeriodicalId":21700,"journal":{"name":"Scientific and Technical Journal of Information Technologies, Mechanics and Optics","volume":"64 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"80853298","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}

{"title":"Numerical simulation of gas dynamics during operation of a wide-range rocket nozzle with a porous insert","authors":"Михаил Владимирович,  Михайлов1, Николай Васильевич Продан, Максим Евгеньевич Ренев, Mikhail V. Mikhailov, Nikolai V. Prodan, Maxim E. Renev","doi":"10.17586/2226-1494-2023-23-4-836-842","DOIUrl":"https://doi.org/10.17586/2226-1494-2023-23-4-836-842","url":null,"abstract":"When the rocket moves in the dense layers of the Earth’s atmosphere, classical nozzles operate in the jet overexpansion mode. In this mode, there is a partial decrease in the magnitude of the specific impulse. As a result, the amount of fuel consumed by the rocket engine increases. An increase in the efficiency of nozzle operation can be achieved by using designs of wide-range nozzles, in which case the replacement of a solid nozzle wall with a perforated one makes it possible to compensate for the loss of specific impulse. The paper presents a study of the effect of a porous insert on the operating modes of the nozzle. Numerical simulation was performed in the Ansys Fluent software package. At the first stage of the study, a geometric model of the computational zone is created which includes a two-dimensional model of the RD-107 rocket engine nozzle and a computational domain that simulates the external environment (air atmosphere). The calculation of the outflow of combustion products through the constructed nozzle at different pressures of atmospheric air is carried out. In the future, the classical nozzle is replaced by a nozzle with a porous insert, and the calculation is carried out at the same values of atmospheric pressure. The values of the specific impulse obtained in calculations with a classical and porous nozzle are compared. The amount of fuel saved when replacing a classic nozzle with a porous one is determined by the difference in the areas bounded by the curves on the plot of specific impulse versus the considered height above the Earth’s surface. Comparison of the values of the specific impulse of nozzles with an impenetrable wall and a porous insert made it possible to conclude that up to a height of 5.4 km the specific impulse of the nozzle with a perforated wall exceeds the values of the specific impulse of the classical nozzle. Evaluation of the effectiveness of the use of a gas-permeable insert in the nozzle design when the nozzle operates in dense layers of the Earth’s atmosphere showed that with the start of operation at a height of 0 km above sea level and up to the height at which the nozzle operates in the design mode – the value of the compensated specific impulse is 2.2 %. The results of the study can be applied in the design of nozzle devices of modern rocket engines operating in dense layers of the atmosphere.","PeriodicalId":21700,"journal":{"name":"Scientific and Technical Journal of Information Technologies, Mechanics and Optics","volume":"84 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"90291851","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}

{"title":"Errors in the demodulation algorithm with a generated carrier phase introduted by the low-pass filter","authors":"G. Miroshnichenko, A.N. Arzhanenkova, M. Plotnikov","doi":"10.17586/2226-1494-2023-23-4-795-802","DOIUrl":"https://doi.org/10.17586/2226-1494-2023-23-4-795-802","url":null,"abstract":"","PeriodicalId":21700,"journal":{"name":"Scientific and Technical Journal of Information Technologies, Mechanics and Optics","volume":"12 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"82424016","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}

{"title":"Verification of event-driven software systems using the specification language of cooperating automata objects","authors":"I. Afanasieva, Fedor A. Novikov, L. Fedorchenko, Ирина Викторовна Афанасьева, Федор Александрович Новиков, Людмила Николаевна Федорченко","doi":"10.17586/2226-1494-2023-23-4-750-756","DOIUrl":"https://doi.org/10.17586/2226-1494-2023-23-4-750-756","url":null,"abstract":"The CIAO (Cooperative Interaction Automata Objects) specification language is intended to describe the behavior of distributed and parallel event-driven systems. This class of systems includes various software and hardware systems for control, monitoring, data collection, and processing. The ability to verify compliance with requirements is desirable competitive advantage for such systems. The CIAO language extends the concept of state machines of the UML (Unified Modeling Language) with the possibility of cooperative interaction of several automata through strictly defined interfaces. The cooperative interaction of automatа objects is defined by a link scheme that defines how the provided and required interfaces of different automatа objects are connected. Thus, the behavior of the system as a whole could be described as a set of execution protocols, each of which is a sequence of interface calls, possibly with guard conditions. We represent a set of protocols using a semantic graph in which all possible paths from the initial nodes to the final nodes define sequences of interface method calls. Because the interfaces are strictly defined in advance by the connection scheme, it is possible to construct a semantic graph automatically according to a given system of interacting automaton objects. To verify the system behavior, one only has to check if each path in the semantic graph does satisfy the requirements. System requirements are formally described using conditional regular expressions that define patterns of acceptable and forbidden behavior. This article proposes methods and algorithms that allow you to check the compliance of programs in the CIAO language with the requirements automatically and, thereby, check the semantics of the developed program. The proposed method narrows the specification formalism to the class of regular languages and the programming language to a language with a simple and predefined structure. In many practical cases, this is sufficient for effective verification.","PeriodicalId":21700,"journal":{"name":"Scientific and Technical Journal of Information Technologies, Mechanics and Optics","volume":"326 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"80373548","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}

{"title":"Determination of the action type of hydrate formation inhibitors by their infrared spectra","authors":"I. Vorozhtsova, T. Nosenko, M. Uspenskaya","doi":"10.17586/2226-1494-2023-23-4-669-675","DOIUrl":"https://doi.org/10.17586/2226-1494-2023-23-4-669-675","url":null,"abstract":"","PeriodicalId":21700,"journal":{"name":"Scientific and Technical Journal of Information Technologies, Mechanics and Optics","volume":"55 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"91300592","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}

{"title":"RuLegalNER: a new dataset for Russian legal named entities recognition","authors":"Z. Shaheen, D. Mouromtsev, I. Postny","doi":"10.17586/2226-1494-2023-23-4-854-857","DOIUrl":"https://doi.org/10.17586/2226-1494-2023-23-4-854-857","url":null,"abstract":"","PeriodicalId":21700,"journal":{"name":"Scientific and Technical Journal of Information Technologies, Mechanics and Optics","volume":"6 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"87831752","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}

{"title":"Peculiarities of growing Ga1-xInxAs solid solutions on GaAs substrates in the field of a temperature gradient through a thin gas zone","authors":"O. Devitsky, L. S. Lunin, D. V. Mitrofanov, I. Sysoev, Dmitry Nikulin, O. Chapura","doi":"10.17586/2226-1494-2023-23-4-703-710","DOIUrl":"https://doi.org/10.17586/2226-1494-2023-23-4-703-710","url":null,"abstract":"","PeriodicalId":21700,"journal":{"name":"Scientific and Technical Journal of Information Technologies, Mechanics and Optics","volume":"16 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"90429999","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}

{"title":"Text augmentation preserving persona speech style and vocabulary","authors":"Анастасия Андреевна,  Матвеева1, Олеся Владимировна Махныткина, Anastasia A. Matveeva, Olesia V. Makhnytkina, Anastasia A. Matveeva — Engineer, Olesia V. Makhnytkina —","doi":"10.17586/2226-1494-2023-23-4-743-749","DOIUrl":"https://doi.org/10.17586/2226-1494-2023-23-4-743-749","url":null,"abstract":"Метод аугментации текстовых данных с сохранением стиля речи и лексики персоны","PeriodicalId":21700,"journal":{"name":"Scientific and Technical Journal of Information Technologies, Mechanics and Optics","volume":"146 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"77671822","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}

{"title":"Method of spatial multiplexing in multi-antenna communication systems","authors":"A. Grishentsev","doi":"10.17586/2226-1494-2023-23-4-812-819","DOIUrl":"https://doi.org/10.17586/2226-1494-2023-23-4-812-819","url":null,"abstract":"","PeriodicalId":21700,"journal":{"name":"Scientific and Technical Journal of Information Technologies, Mechanics and Optics","volume":"110 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"83156378","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}