315 research outputs found

    Some Methods for Eigenvalue Problem

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    22KJ00003571947論文Articledepartmental bulletin pape

    Approaching Movement-Aware Satellite Selection Method for Low-Earth-Orbit Satellite Networks

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    In recent years, Low-Earth-Orbit (LEO) satellite networks, such as Starlink, have been advancing rapidly. However, it has been shown that Starlink may experience frequent variations in link quality due to handovers and other factors. Furthermore, since the communication process in Starlink is proprietary, only end-to-end verification has been conducted. The method used for satellite selection is still unclear. Therefore, this study simulates the current and future Starlink environments using the ns-3 LEO module and evaluates the effect of the satellite selection method on the communication performance in LEO satellite networks. We propose two satellite selection methods that lengthen communication time by considering the movement of available satellites. Simulation results demonstrate that the proposed methods effectively increase the communication time provided by the selected satellite. The evaluation results indicate that the connected satellite should be selected by considering both the satellite altitude and the application requirements.journal articl

    MPEG Frame Priority and Radio congestion-aware dynamic frame transmission control method

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    In recent years, wireless LANs have become widely adopted as a communication infrastructure. Wireless communication quality fluctuates due to factors like obstacles and coexisting communications, which in turn affect application quality. However, applications continue to send data without considering these fluctuations and wireless congestion, thereby further degrading application quality. Moreover, the physical/MAC layers transmit data uniformly regardless of its value to the application. As a result, the loss of high-value data can lead to a significant deterioration in application quality. In response to this issue, our research aims to mitigate application quality degradation and make efficient use of wireless resources by selecting and transmitting only the critical data to maintain application quality, based on the priority of the MPEG frames and the wireless congestion status.conference pape

    Method for Transparent Transformation of Monolithic Programs into Microservices for Effective Use of Edge Resources

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    A lot of research has recently been conducted on edge computing. Since edge servers have relatively small computational resources, it is necessary to perform processing by utilizing the resources of multiple servers for effective resource utilization at each edge server. Conventional technologies for improving the efficiency of computational processing, such as the Message Passing Interface, often require the development of programs to optimize computational processing for dedicated execution environments and are thus unsuitable for edge environments where the server environment is diverse and the load status changes over time. Our research group has studied data processing at edge servers and proposed a method for performing data processing by repeating small processes and data transfers among multiple general-purpose servers. However, we have not developed a concrete method for partitioning a program and combining the parts into a set of small processes. In this paper, we propose a method for transparently creating microservices by automatically partitioning a monolithic program into small processes, which can be executed and transfer data among themselves, without considering the optimization of the processes during program development. A sample program is partitioned using the proposed method to demonstrate that the partitioning of functions and establishment of flexible communication connections among the partitioned functions can be realized.journal articl

    “Decision-making ability” and “inability to resist” of sex victims under intoxication.

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    departmental bulletin pape

    Inhabitants of St. Augustine, Florida

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    24-2ClaimsReport : Petition of Citizens of St. Augustine, Florida. [305] Seminole war; 1836.1837-3

    Experimental Evaluation of Application Traffic Characteristics on WLANs in the IoT Era

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    Wireless LANs (WLANs) are mainly used as access networks in the Internet of Things (IoT) era, and the latest standard IEEE802.11ax requires WLANs to communicate with multiple stations simultaneously. As IoT devices proliferate, the number of stations connected to a WLAN will significantly increase, and thus WLANs will need to accommodate IoT traffic with new characteristics totally different from those of traditional traffic, such as rich content. Because our previous study showed that the performance of an IEEE802.11ax WLAN depends on the number of stations and traffic characteristics, a new traffic control scheme becomes essential for the coexistence of rich content and IoT traffic. Therefore, we investigated the traffic characteristics of IoT devices to clarify their differences. Based on these considerations, we concluded that a real-time traffic estimation and classification method is necessary for real-time traffic control on WLANs in the IoT era.The 15th International Conference on Intelligent Networking and Collaborative Systems (INCoS-2023), 6-8 September., 2023, Chiang Mai University, Thailandjournal articl
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