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Littérature scientifique sur le sujet « AUXILIARY RING NETWORK »

Auteur : Grafiati

Publié le 11 septembre 2023

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Articles de revues sur le sujet "AUXILIARY RING NETWORK"

Zhao, Yue. « Clustered Wireless Sensor Network Assisted the Design of Intelligent Art System ». Journal of Sensors 2022 (10 janvier 2022) : 1–11. http://dx.doi.org/10.1155/2022/3216727.

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Based on the principle of cluster wireless sensor network, this article introduces typical routing protocols in wireless sensors, and wireless sensor network protocol in detail analyzes their advantages and disadvantages and addresses their shortcomings. First, in the clustering network, a uniform clustering protocol with multiple hops in the circular network is proposed. The circular network is divided into rings of equal width, and clusters of equal size are set on different rings. Secondly, the ordinary nodes on each layer of the ring send the collected data to the auxiliary intelligent nodes in the cluster in a single-hop manner, and the auxiliary intelligent nodes located on the outer ring transfer the data to the auxiliary intelligent nodes located on the adjacent inner ring. Finally, on the basis of studying the clustering network protocol, this paper proposes a new clustering routing algorithm, a multihop adaptive clustering routing algorithm. The simulation results show that the algorithm can effectively extend the life of the network, save network energy consumption, and achieve network load balance. At the same time, the initial energy of the auxiliary intelligent node is set according to the energy consumption of the ordinary node and the relative distance between the auxiliary intelligent node and the base station on each layer of the ring. The theoretical and simulation results prove that, compared with the clustered network and auxiliary intelligent nodes, the clustered network can extend the life of the network.

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Lynnyk, Volodymyr, Branislav Rehak et Sergej Celikovsky. « On applicability of auxiliary system approach in complex network with ring topology ». Cybernetics and Physics, Volume 8, 2019, Number 3 (30 novembre 2019) : 143–52. http://dx.doi.org/10.35470/2226-4116-2019-8-3-143-152.

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The generalized synchronization of the complex network consisting of nodes being the chaotic systems via the auxiliary system approach is studied here. More specifically, the applicability of the auxiliary system approach to detect the generalized synchronization in the complex network consisting of unidirectional coupled chaotic systems in the cyclic chain is investigated. Such a complex network has the so-called ring topology. It is shown that the auxiliary system approach is useful for this purpose. The presented analysis is supported by the numerical simulations as well.

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Shah, Nehad Ali. « A Comparison Study of Irregularity Descriptors of Benzene Ring Embedded in P-Type Surface Network and Its Derived Network ». Journal of Mathematics 2021 (4 mars 2021) : 1–12. http://dx.doi.org/10.1155/2021/8868549.

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Topological indices are atomic auxiliary descriptors which computationally and hypothetically portray the natures of the basic availability of nanomaterials and chemical mixes, and henceforth, they give faster techniques to look at their exercises and properties. Anomaly indices are for the most part used to describe the topological structures of unpredictable graphs. Graph anomaly examines are helpful not only for quantitative structure-activity relationship (QSAR) and also quantitative structure-property relationship (QSPR) but also for foreseeing their different physical and compound properties, including poisonousness, obstruction, softening and breaking points, the enthalpy of vanishing, and entropy. In this article, we discuss the irregularities of benzene ring and its line graph and compare them by its irregularity indices. We present graphical comparison by using Mathematica.

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Wang, Guo You, Biao Long Su, Li Sun et Xu Dong Cao. « Functional Design for Troubleshooting Simulation of Distribution Automation and Software of Training System ». Advanced Materials Research 1092-1093 (mars 2015) : 267–71. http://dx.doi.org/10.4028/www.scientific.net/amr.1092-1093.267.

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The simulation of distribution automation troubleshooting and the functional design of training system software is discussed by this article, Including: basic platform capabilities, the Decision Analysis of Auxiliary power failure, Power operation mode for load transfer analysis, the ring analysis of Grid operation mode , the Training Simulator of Distribution Network and the data synchronization of The simulation system diagram and mode .the simulation of Distribution Automation Troubleshooting and the effect of training system operation Show the validity and effectiveness of the method.

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Shi, Yu, Biao Long Su, Yu Fei Song et Xiao Hang Liu. « The Technical Features and the Architecture Design of Software for the Troubleshooting Simulation of Distribution Automation and Training Systems ». Advanced Materials Research 1092-1093 (mars 2015) : 370–74. http://dx.doi.org/10.4028/www.scientific.net/amr.1092-1093.370.

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The simulation of distribution automation troubleshooting and the functional design of training system software is discussed by this article, Including: basic platform capabilities, the decision analysis of auxiliary power failure, Power operation mode for load transfer analysis, the ring analysis of grid operation mode , the training simulator of distribution network and the data synchronization of the simulation system diagram and mode. The simulation of distribution automation troubleshooting and the effect of training system operation show the validity and effectiveness of the method.

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Liu, Zhi Hai, Qing Liang Zeng, Zai Chao Wu et Guang Yu Zhou. « Design and Implementation of Automatic Drainage in Coal Mine ». Advanced Materials Research 291-294 (juillet 2011) : 2851–54. http://dx.doi.org/10.4028/www.scientific.net/amr.291-294.2851.

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Drainage system is one of the important sub-systems of coal mine integrative control platform[1], and is used to guarantee the safety of mining and auxiliary transportation under the ground. The functions of drainage system are defined, the network framework is designed, the start and stop procedures of the pump engine under the manual control mode and automatic control mode are described, and the determining methods based on liquid level to control several pumps in automatic mode are analyzed. By using Simense PLC module, power source module, digital module, analog module and touch screen hardware, the drainage system control platform is set up, which is connected to the control computer on the ground by using Simense communication module and industrial ring Ethernet[4], and achieved the purpose of remote control.

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Chen, Peng, Rui Tong, Guangquan Lu et Yunpeng Wang. « Exploring Travel Time Distribution and Variability Patterns Using Probe Vehicle Data : Case Study in Beijing ». Journal of Advanced Transportation 2018 (2018) : 1–13. http://dx.doi.org/10.1155/2018/3747632.

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Exploring travel time distribution and variability patterns is essential for reliable route choices and sophisticated traffic management and control. State-of-the-art studies tend to treat different types of roads equally, which fails to provide more detailed analysis of travel time characteristics for each specific road type. In this study, based on a vast amount of probe vehicle data, 200 links inside the Third Ring Road of Beijing, China, were investigated. Four types of roads were covered including urban expressways, auxiliary roads of urban expressways, major roads, and secondary roads. The day-of-week distributions of unit distance travel time were first analyzed. Kolmogorov-Smirnov test, Anderson-Darling test, and chi-squared test were employed to test the goodness-of-fit of different distributions and the results showed lognormal distribution was best-fitted for different time periods and road types compared with normal, gamma, and Weibull distribution. In addition, four reliability measures, that is, unit distance travel time, coefficient of variation, buffer time index, and punctuality rate, were used to explore the day-of-week travel time variability patterns. The results indicated that urban expressways, auxiliary roads of urban expressways, and major roads have regular and distinct morning and afternoon peaks on weekdays. It is noteworthy that in daytime the travel times on auxiliary roads of urban expressways and major roads share similar variability patterns and appear relatively stable and reliable, while urban expressways have most reliable travel times at night. The results of analysis help enable a better understanding of the volatile travel time characteristics of each road type in urban network.

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Pakkirisami Churchill, Kishore Kumar, Harikrishnan Ramiah, Gabriel Chong, Yong Chen, Pui-In Mak et Rui P. Martins. « A Fully-Integrated Ambient RF Energy Harvesting System with 423-μW Output Power ». Sensors 22, n^o 12 (10 juin 2022) : 4415. http://dx.doi.org/10.3390/s22124415.

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This paper proposes a 2.4-GHz fully-integrated single-frequency multi-channel RF energy harvesting (RFEH) system with increased harvested power density. The RFEH can produce an output power of ~423-μW in harvesting ambient RF energy. The front-end consists of an on-chip impedance matching network with a stacked rectifier concurrently matched to a 50 Ω input source. The circuit mitigates the “dead-zone” by enhancing the pumping efficiency, achieved through the increase of Vgs drivability of the proposed internal gate boosting 6-stage low-input voltage charge pump and the 5-stage shared-auxiliary-biasing ring-voltage-controlled-oscillator (VCO) integrated to improve the start-up. The RFEH system, simulated in 180-nm complementary metal–oxide–semiconductor (CMOS), occupies an active area of 1.02 mm2. Post-layout simulations show a peak power conversion efficiency(PCE) of 21.15%, driving a 3.3-kΩ load at an input power of 0 dBm and sensitivity of −14.1 dBm corresponding to an output voltage, Vout,RFEH of 1.25 V.

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Klyshnikov, Kirill Yu, Evgeny A. Ovcharenko, Vyacheslav V. Danilov, Vladimir I. Ganyukov et Leonid S. Barbarash. « Machine learning for detection of aortic root landmarks ». Journal Of Applied Informatics 17, n^o 3 (31 mai 2022) : 73–83. http://dx.doi.org/10.37791/2687-0649-2022-17-3-73-83.

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A significant increase in the number of transcatheter aortic valve replacements entails the development of auxiliary systems that solve the problem of intra- or preoperative assistance to such interventions. The main concept of such systems is the concept of computerized automatic anatomical recognition of the main landmarks that are key to the procedure. In the case of transcatheter prosthetics – elements of the aortic root and delivery system. This work is aimed at demonstrating the potential of using machine learning methods, the modern architecture of the ResNet V2 convolutional neural network, for the task of intraoperative real-time tracking of the main anatomical landmarks during transcatheter aortic valve replacement. The basis for training the chosen architecture of the neural network was the clinical graphical data of 5 patients who received transcatheter aortic valve replacement using commercial CoreValve systems (Medtronic Inc., USA). The intraoperative aortographs obtained during such an intervention with visualization of the main anatomical landmarks: elements of the fibrous ring of the aortic valve, sinotubular articulation and elements of the delivery system, became the output data for the work of the selected neural network. The total number of images was 2000, which were randomly distributed into two subsamples: 1400 images for training; 600 – for validation. It is shown that the used architecture of the neural network is capable of performing detection with an accuracy of 95-96% in terms of the metrics of the classification and localization components, however, to a large extent does not meet the performance requirements (processing speed): the processing time for one aortography frame was 0.097 sec. The results obtained determine the further direction of development of automatic anatomical recognition of the main landmarks in transcatheter aortic valve replacement from the standpoint of creating an assisting system – reducing the time of analysis of each frame due to the optimization methods described in the literature.

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Huang, Mingli, Xiayi Yao, Zhongsheng Tan et Jiabin Li. « Research on Water Pressure Distribution Characteristics and Lining Safety Evaluation of Deep Shaft in Water-Rich, Large, Fractured Granite Stratum ». Applied Sciences 12, n^o 15 (23 juillet 2022) : 7415. http://dx.doi.org/10.3390/app12157415.

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Building deep shafts in water-rich granite formations with large fissures has difficulties, such as high-water pressure and high construction risks, and is prone to water inrush and shaft flooding. This paper relies on the No. 1 vertical auxiliary shaft project of Gaoligongshan tunnel and obtains the uneven distribution of water pressure on the outside of the lining in the horizontal direction through on-site monitoring data. In order to explain this phenomenon, based on the statistical parameters of actual fractures in the field and the Monte Carlo method, the DFN built in FLAC3D6.0 is used to generate a discrete fracture network, and a dual medium model, considering the distribution of large fractures, is established. The reason for the uneven distribution of water pressure is obtained through research: the large fissures in the surrounding rock make the hydraulic conductivity of each part of the stone body formed after grouting of the surrounding rock different. This results in different osmotic pressures from the hydrostatic pressure outside the grouting ring to the outside of the lining through the grouting ring. Based on the distribution characteristics of water pressure outside the lining, the safety of the lining under non-uniform pressure is studied. The lining safety factor is defined as the ratio of the lining’s normal service limit state load to the actual load. The normal service limit state load is the load when the RFPA software is used to establish a load-structure model to simulate the load when the lining has obvious cracks under the action of external load; the actual load is the monitoring load. The new method and mine design code method are used to evaluate the lining safety and make a comparative analysis. The results show that the new method can effectively calculate the lining safety factor and has a larger safety reserve.

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Thèses sur le sujet "AUXILIARY RING NETWORK"

TUSHAR. « ANALYSIS OF PROTECTION SCHEME OF 33 kV AUXILIARY RING NETWORK IN DELHI METRO RAIL CORPORATION TO ENHANCE SYSTEM PERFORMANCE ». Thesis, 2016. http://dspace.dtu.ac.in:8080/jspui/handle/repository/16084.

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The objective of any proper protection scheme is to keep the power system stable and reliable by isolating only the components that are experiencing fault while leaving as much of the electrical network as possible still in operation. Major components of any protection systems are instrument transformers, relays, circuit breakers and sometimes communication channel. With the rapid progress in technology, this aspect of electrical engineering applications have become very specialized and now most of the electrical organizations have dedicated teams specializing in this aspect with dedicated softwares for iteration of complex electrical network. Rail based mass transit system are gaining popularity in the country due to the punctuality, comfort and ease of travel provided to the consumers. In this backdrop, the importance of reliable power supply becomes very important. To ensure reliable supply for passengers safety and comfort, planned redundancies in the electrical network, selective and quick protection scheme are very essential for restoring power supply within the stipulated time frame in case of any incident. This dissertation briefly presents the introduction to the system of auxiliary power distribution in Delhi Metro Rail Corporation, analyses the Protection scheme of 33 kV Auxiliary system ring feeders and suggests tripping logics to improve system performance during various fault scenarios. The tripping logics not only help in eliminating the previous drawbacks but also help in quick identification of faulty section resulting in timely resumption of supply from the various planned redundancies. This tripping logic can also prove to be useful in any interconnected ring network or a micro grid which is currently the future of electrical distribution network in many countries.

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