检索结果-内蒙古大学图书馆

2024 International Conference on Ocean Studies, ICOS 2024

作者： Aleksanina, Marina Dyakov, Sergey Karnatskiy, Anton Institute of Automation and Control Processes Far Eastern Branch Russian Academy of Sciences Vladivostok Russia

ISBN: (纸本)9798331532307

The technology of automatic calculation of sea ice compression zones and parameters based on ice drift velocities obtained from a sequence of satellite images is considered. To calculate the ice drift velocity, we use the developed methods that allow us to estimate the accuracy of each vector a priori. Compression/rarefaction of an ice field is considered as the rate of change in the distance between individual ice floes over time. Compression parameters are the magnitude and direction of the ice compression/rarefaction axis with an estimate of the accuracy of their calculation. The advantages of the Meteor-M satellite KMSS device for calculating ice parameters along the Northern Sea Route are considered. For the water area of the Kara Gate Strait in the Pechora Sea, automatic identification of compression/rarefaction zones is compared with visual-manual identification. The variability of the compression value depending on the spatial size of the calculation zone is estimated. © 2024 IEEE.

关键词： Sea ice

来源：评论

学校读者我要写书评

暂无评论

Stability and bifurcation analysis of a tri-trophic food chain model with intraguild predation

引用

International Journal of Biomathematics 2023年第2期16卷 59-84页

作者： Evgeniya Giricheva Institute of Automation and Control Processes Far Eastern Branch of the Russian Academy of Science 5Radio street Vladivostok 690014Russia

The dynamics of a three-component model for food web with intraguild predation isconsidered. The model is based on the collection of ordinary differential equations thatdescribe the interactions among prey, intermediate predator and top predator. First,the model without self-limitation of the predators is studied. Boundedness of the systemand existence of non-negative solutions are established. The local stability analysisof the equilibria is carried out to examine the behavior of the system. The possibilityof Hopf bifurcation around non-negative equilibria with consumption rates as bifurcationparameters is studied. Center manifold theorem and the normal form theory areapplied to obtain the formulas for determining the direction of Hopf bifurcation and thestability of bifurcating periodic solutions. Numerical simulations support the analyticalfindings, which show that the extinction of one of the predators can occur under certainrestrictions on the predation rate of the top predator. Subsequently, numerical analysisof the model with self-limitation of the predators is carried out. Simulations reveal thatthe system with intraspecific competition in the predator populations can reproducecoexistence between the three species in resource-rich environment.

关键词： Prey-predator model intraguild predation stability Hopf bifurcation

来源：评论

学校读者我要写书评

暂无评论

Nonparametric Soft Sensor Development for Distillation-In-Series Unit

Nonparametric Soft Sensor Development for Distillation-In-Se...

引用

2024 International Conference on Industrial Engineering, Applications and Manufacturing, ICIEAM 2024

作者： Mozharovskii, Igor Shevlyagina, Svetlana Institute Of Automation And Control Processes Feb Ras Vladivostok Russia Vladivostok State University Vladivostok Russia

ISBN: (纸本)9798350395013

Oil refining is an energy-intensive process that continuously separates petroleum products. Refining companies are interested in products that meet all regulations and the efficiency of their production. It is possible to achieve cost minimization and increase the quality of the output product by using accurate soft sensors that can reliably predict the quality of the output product in real time. In this regard, research on the construction of reliable soft sensors in industrial production is necessary and relevant. To improve the estimation capability, the alternating conditional expectation algorithm, which is based on nonparametric optimal transformations, was used for nonparametric soft sensor design. As a result, the designed nonparametric soft sensor shows a better efficiency in predicting the quality index of the target distillation product with a significantly reduced root mean square error compared to multiple linear regression analysis. © 2024 IEEE.

关键词： Distillation

来源：评论

学校读者我要写书评

暂无评论

SMART Standards for Industry 1

引用

8th International Scientific Conference on Intelligent Information Technologies for Industry, IITI 2024

作者： Gribova, Valeriya Shalfeeva, Elena Institute of Automation and Control Processes FEB RAS Vladivostok Russia Far Eastern Federal University Vladivostok Russia

ISBN: (数字)9783031776885

ISBN: (纸本)9783031776878

An urgent task for all areas of industry is to create documents with machine-readable content (SMART-standards) that can be analyzed not only by domain specialists, but also software services for solving various professional tasks in the Industry. Such documents should be equally understandable to both experts and software systems, which is generally a contradiction. The presence of a textual, i.e. human-readable document with its subsequent translation into a machine-understandable representation is quite a difficult task due to the presence of complex semantic connections in the domain. Modern methods of natural language analysis, including Large Language Models (LLM), are not able to accurately solve this problem. Therefore, an critical task is to develop new methods and approaches to ensure human and machine comprehension while minimizing possible errors when translating from one representation to another. The purpose of this work is to describe an approach for creating and translating into a machine-understandable representation of regulatory documents of the Industry for their further use in software services and systems. The authors propose a new approach for representing normative documents as two-level graphs of knowledge. LLM models, supplemented by a specialized adapter obtained as a result of additional training, serve as the basis for ensuring the transformation of one form into another form. © The Author(s), under exclusive license to Springer Nature Switzerland AG 2024.

关键词： Knowledge graph

来源：评论

学校读者我要写书评

暂无评论

Multiple AUV Navigation without Using Acoustic Beacons

引用

Gyroscopy and Navigation 2022年第4期13卷 253-261页

作者： Scherbatyuk, A.F. Institute of Automation and Control Processes of Far Eastern Branch of the Russian Academy of Sciences Vladivostok Russia

Abstract: Autonomous bottom sensor networks are increasingly used to collect various data near the sea bottom. Transmitting these large accumulated data arrays to the data collection and processing center is a pressing problem. A promising method to retrieve data from sensor nodes is to use multiple autonomous underwater vehicles (AUV). The quality of underwater mission performance is then determined by accurate navigation of each vehicle within the group. The article presents a new efficient method of multiple AUV navigation for performing the vital task – servicing the autonomous network of bottom sensor stations. The method requires neither beacons of long baseline acoustic navigation system (LBL ANS) nor surface vehicles. During the mission, some AUVs are moving to the target sensor nodes, while the others are docked to the sensor nodes, read out the accumulated data, and perform the maintenance procedures (battery recharging, state diagnostics, and correction of the mission program). The main idea of the method is that the AUVs docked to the sensor nodes function as temporary stationary beacons of the differential ranging (DR) ANS for the other moving AUVs. The algorithms of the proposed navigation method are considered. © 2022, Pleiades Publishing, Ltd.

关键词： Navigation systems

来源：评论

学校读者我要写书评

暂无评论

Spatial and fine energy structure of indirect exciton

引用

The European Physical Journal B 2025年第1期98卷 1-9页

作者： Dzyuba, V. P. Vitrik, O. B. Institute of Automation and Control Processes of FEB RAS Vladivostok Russia

Quantum states of a spatially indirect exciton (IX), including its binding energy, are largely determined by the geometry of the spatial quantum structure consisting of (IX) and the interface (IXI). Unfortunately, this fact has been poorly studied both experimentally and theoretically. In this paper, the parameters of the IXI geometry and their effect on the IX binding energy spectrum are analytically investigated for the first time. For this purpose, the potential of the Coulomb interaction of an electron and a hole is determined using the image method. It is shown that the geometry parameters are quantized, and the effective permittivity of the interface becomes dependent on the orbital and magnetic quantum numbers of IX. A nonlinear dependence of the IX binding energy on the geometric parameters is observed. All these manifestations of the geometry are accessible to experimental observation. Each geometry has its own quantum states. This opens up the possibility of using IXI in exciton spectroscopy of the interface layer. The controllability of the IXI geometry by polarized light allows us to hope for using quantum geometric states of IX as qubits. In this work, various geometric states IX of two planar heterostructures SiO2/Si3N4 and GaAs/CdSe were modeled as an example.

关键词：

来源：评论

学校读者我要写书评

暂无评论

Technology for Developing Applied Medical Intelligent Systems for Planing and Monitoring Treatment

Technology for Developing Applied Medical Intelligent System...

引用

2024 IEEE International Multi-Conference on Engineering, Computer and Information Sciences, SIBIRCON 2024

作者： Igorevich, Kovalev Roman Victorovna, Gribova Valeriya Borisovich, Okun Dmitry Institute of Automation and Control Processes Far Eastern Federal University Laboratory of Intelligent Systems named after A. S. Kleshchev Vladivostok Russia Institute of Automation and Control Processes Laboratory of Intelligent Systems named after A. S. Kleshchev Vladivostok Russia

ISBN: (纸本)9798331532024

The paper describes the technology of creating applied medical intelligent systems for planning and monitoring treatment. It is based on the use of a specialized toolset. It can be used to develop treatment systems, regardless of the branch of medicine and the type of treatment. The use of the proposed technology can significantly reduce labor costs during development of decision support systems. © 2024 IEEE.

关键词： Wages

来源：评论

学校读者我要写书评

暂无评论

Evolution of the Wave Pattern for Piecewise Linear Uniaxial Tension and Compression of a Heteromodular Elastic Bar

引用

Journal of Applied and Industrial Mathematics 2022年第4期16卷 645-658页

作者： Dudko, O.V. Lapteva, A.A. Ragozina, V.E. Institute of Automation and Control Processes Far East Branch Russian Academy ofSciences Vladivostok690041 Russia

Abstract: The process of changing the wave pattern in the problem of nonstationary deformation ofa heteromodular elastic bar under uniaxial piecewise linear tension and subsequent compression isdescribed as a connected sequence of local solutions on successive time intervals. All possiblevariants and results of collisions of primary and secondary strong discontinuities are indicated fora given piecewise linear function of boundary displacements. An efficient algorithm for solvingone-dimensional boundary value problems of the dynamics of deformation of a heteromodularelastic medium under a piecewise linear boundary condition is proposed. The algorithm is basedon finding a path in a local decision tree. © 2022, Pleiades Publishing, Ltd.

关键词： Boundary conditions

来源：评论

学校读者我要写书评

暂无评论

On the optimality of uniform velocity-deceleration separation scheme for tethered satellite systems

引用

control Theory and Technology 2024年第4期22卷 503-516页

作者： Peng Yu Ji-Feng Zhang Shuping Tan Jin Guo Yanlong Zhao School of Automation and Electrical Engineering University of Science and Technology BeijingBeijing100083China Key Laboratory of Knowledge Automation for Industrial Processes Ministry of EducationBeijing100083China Key Laboratory of Systems and Control Academy of Mathematics and Systems ScienceChinese Academy of SciencesBeijing100190China Beijing Institute of Control Engineering Beijing100094China

For mitigating the libration angle fluctuation of the tethered satellite system,this paper discusses how to make the uniform velocity-deceleration separation scheme achieve the best ***,a judgment condition is established to determine the tether state by comparing the tether length and the relative distance of the sub-satellite and the parent *** on the tethered satellite system dynamics equation and Clohessy-Wiltshire equation,dynamic models are given for four cases of tether ***,the influence of the uniform velocity-deceleration separation scheme on the libration angle is analyzed by taking the libration angle at the separation ending time and the mean absolute value of the libration angle as index ***,the optimality problem of the uniform velocity-deceleration separation scheme is formulated as an optimization problem with constraints,and an approximate solution algorithm is given by combining the back propagation neural network and Newton-Raphson method of multiple initial ***,the effectiveness of the proposed method is verified by a numerical simulation.

关键词： Tethered satellite systems Libration angle Uniform velocity-deceleration separation Neural network

来源：评论

学校读者我要写书评

暂无评论

Femtosecond-laser nanostructuring of silicon thin films for optical information encryption 9

Femtosecond-laser nanostructuring of silicon thin films for ...

引用

Nanophotonics and Micro/Nano Optics IX 2023

作者： Syubaev, Sergey Institute of Automation and Control Processes FEB RAS 5 Radio Str. Vladivostok Russia

ISBN: (纸本)9781510667952

Pulsed laser processing matures as a powerful technique for flexible and high-performing nanostructuration. Rich physics behind the light-matter interaction allows to produce unique surface nanotextures with desired properties, beneficial for various practically-relevant applications such as optical sensing, anti-counterfeiting, realization of nanophotonic platforms and so on. Here we have applied direct femtosecond-laser printing to locally fabricate nanostructures on glass-supported amorphous-silicon thin film for realization of high-resolution (up to 60 000 dots per inch) security labels offering full-optical information encryption in several ways. Since the proposed tag represents array of close-packed amorphous-silicon hemispherical nanoparticles, the first approach for information encryption is to selectively crystallize some of nanoparticles by continuous-wave laser irradiation without morphological changes. Thus, crystalized nanoparticles ordered in a user-defined way indicate encrypted information that can be read using Raman signal intensity mapping at frequency of 519 cm−1, corresponding to the main phonon mode of crystalline silicon. The second way is to hide Mie-resonant nanoparticles between non-resonant ones. Since the latter haven’t proper size to resonantly interact with pump radiation during Raman signal mapping, encrypted information can be revealed via evident variation in Raman yield between resonant and non-resonant nanoparticles. Thereby, we demonstrated facile single step printing of anti-counterfeiting labels at resolution up to 60 000 dots per inch justifying the applicability of the developed approach for optical information encryption. © 2023 SPIE. All rights reserved.

关键词： Thin films

来源：评论

学校读者我要写书评

暂无评论

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

请选择保存的检索档案：

请选择收藏分类：

通借通还

建议与咨询 留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

请选择保存的检索档案： 新增检索档案 确定 取消

请选择收藏分类： 新增自定义分类 确定 取消

通借通还

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

请选择保存的检索档案：

请选择收藏分类：