Journal of Telecommunictions and Information Technology最新文献_第3页

Speech-Based Vehicle Movement Control Solution 基于语音的车辆运动控制解决方案

Journal of Telecommunictions and Information Technology Pub Date : 2021-09-30 DOI: 10.26636/jtit.2021.149820

G. Kaur, Mohit Srivastava, Amod Kumar

引用次数: 1

A Shared Cybersecurity Awareness Platform 共享网络安全意识平台

Journal of Telecommunictions and Information Technology Pub Date : 2021-09-30 DOI: 10.26636/jtit.2021.154421

M. Amanowicz

{"title":"A Shared Cybersecurity Awareness Platform","authors":"M. Amanowicz","doi":"10.26636/jtit.2021.154421","DOIUrl":"https://doi.org/10.26636/jtit.2021.154421","url":null,"abstract":"|Ensuring a good level of cybersecurity of global IT systems requires that speci(cid:12)c procedures and cooperation frameworks be adopted for reporting threats and for coordinating the activities undertaken by individual entities. Technical infrastructure enabling safe and reliable online collaboration between all teams responsible for security is an important element of the system as well. With the above taken into consideration, the paper presents a comprehensive distributed solution for continuous monitoring and detection of threats that may a(cid:11)ect services that provision is essential to security and broadly understood the state’s economic interests. The said solution allows to collect, process and share distributed knowledge on hazard events. The partnership-based model of cooperation between the system’s users allows the teams to undertake speci(cid:12)c activities at the central level, facilitates global cyber threat awareness, and enhances the process of predicting and assessing cyber risks in order to ensure a near-real-time response. The paper presents an overview of the system’s architecture, its main components, features, and threat intelligence tools supporting the safe sharing of information concerning speci(cid:12)c events. It also o(cid:11)ers a brief overview of the system’s deployment and its testing in an operational environment of NASK’s Computer Security Incident Response Team (CSIRT) and Security Operation Center (SOC) of essential services operators.","PeriodicalId":227678,"journal":{"name":"Journal of Telecommunictions and Information Technology","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-09-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130960056","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}

引用次数: 3

Tractography Methods in Preoperative Neurosurgical Planning 神经外科术前计划中的神经束造影方法

Journal of Telecommunictions and Information Technology Pub Date : 2021-09-30 DOI: 10.26636/jtit.2021.154521

Mateusz Koryciński, K. Ciecierski

引用次数: 0

Enabling Power Beacons and Wireless Power Transfers for Non-Orthogonal Multiple Access Networks 为非正交多址网络启用功率信标和无线功率传输

Journal of Telecommunictions and Information Technology Pub Date : 2021-09-30 DOI: 10.26636/jtit.2021.152421

Chi‐Bao Le, N. D. Nguyen

引用次数: 0

Linear and Planar Array Pattern Nulling via Compressed Sensing 基于压缩感知的线性和平面阵列方向图归零

Journal of Telecommunictions and Information Technology Pub Date : 2021-09-30 DOI: 10.26636/jtit.2021.152921

J. Mohammed, R. H. Thaher, A. Abdulqader

引用次数: 2

COVID-19 Pandemic and Internet Traffic in Poland: Evidence from Selected Regional Networks COVID-19大流行和波兰的互联网流量:来自选定区域网络的证据

Journal of Telecommunictions and Information Technology Pub Date : 2021-09-30 DOI: 10.26636/jtit.2021.154721

M. Karpowicz

引用次数: 2

Developing RF Power Sensor Calibration Station in Direct Comparison Transfer System using Vector Network Analyzer 利用矢量网络分析仪开发直接比较传输系统中的射频功率传感器校准站

Journal of Telecommunictions and Information Technology Pub Date : 2021-09-30 DOI: 10.26636/jtit.2021.155021

Jarosław Szatkowski

{"title":"Developing RF Power Sensor Calibration Station in Direct Comparison Transfer System using Vector Network Analyzer","authors":"Jarosław Szatkowski","doi":"10.26636/jtit.2021.155021","DOIUrl":"https://doi.org/10.26636/jtit.2021.155021","url":null,"abstract":"Calibration of RF power sensors is crucial issue in RF power measurements. Many calibration laboratories use the direct comparison transfer system with a signal generator and a power splitter. Increasing performance of modern vector network analyzers makes it possible to perform a power sensor calibration with acceptable uncertainties. The main advantage when using a VNA is a simple measurement setup with a wide frequency range (up to 50 GHz, limited only by the VNA and the standard power sensor), where all of required components, i.e. signal generator, a directional coupler and a reference power indicator are built in the VNA technology. This paper reports performing a VNA-based RF power sensors calibration for 10 MHz – 18 GHz band, carried out in the Laboratory of Electric, Electronic and Optoelectronic Metrology at the National Institute of Telecommunications in Warsaw, Poland. In order to validate the proposed solution two of power sensors were calibrated at a reference laboratory. The validation consisted of two steps. At first, one of those characterized power sensors was calibrated at our laboratory in direct comparison transfer system. Finally, the results obtained from the VNA-based system were compared with the previously obtained ones. Keywords—direct comparison transfer, microwave power measurements, power sensor calibration, measurement uncertainty, VNA.","PeriodicalId":227678,"journal":{"name":"Journal of Telecommunictions and Information Technology","volume":"85 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-09-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126255183","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}

引用次数: 0

Network Traffic Classification in an NFV Environment using Supervised ML Algorithms NFV环境中使用监督ML算法的网络流量分类

Journal of Telecommunictions and Information Technology Pub Date : 2021-09-30 DOI: 10.26636/jtit.2021.153421

G. Ilievski, P. Latkoski

{"title":"Network Traffic Classification in an NFV Environment using Supervised ML Algorithms","authors":"G. Ilievski, P. Latkoski","doi":"10.26636/jtit.2021.153421","DOIUrl":"https://doi.org/10.26636/jtit.2021.153421","url":null,"abstract":"We have conducted research on the performance of six supervised machine learning (ML) algorithms used for network traffic classification in a virtual environment driven by network function virtualization (NFV). The performancerelated analysis focused on the precision of the classification process, but also in time-intensity (speed) of the supervised ML algorithms. We devised specific traffic taxonomy using commonly used categories, with particular emphasis placed on VoIP and encrypted VoIP protocols serve as a basis of the 5G architecture. NFV is considered to be one of the foundations of 5G development, as the traditional networking components are fully virtualized, in many cases relaying on mixed cloud solutions, both of the premiseand public cloud-based variety. Virtual machines are being replaced by containers and application functions while most of the network traffic is flowing in the east-west direction within the cloud. The analysis performed has shown that in such an environment, the Decision Tree algorithm is best suited, among the six algorithms considered, for performing classification-related tasks, and offers the required speed that will introduce minimal delays in network flows, which is crucial in 5G networks, where packet delay requirements are of great significance. It has proven to be reliable and offered excellent overall performance across multiple network packet classes within a virtualized NFV network architecture. While performing the classification procedure, we were working only with the statistical network flow features, leaving out packet payload, source, destinationand port-related information, thus making the analysis valid not only from the technical, but also from the regulatory point of view. Keywords—classification, machine learning, network functions virtualization, network traffic.","PeriodicalId":227678,"journal":{"name":"Journal of Telecommunictions and Information Technology","volume":"119 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-09-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125205699","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}

引用次数: 1

Markov Decision Process based Model for Performance Analysis an Intrusion Detection System in IoT Networks 基于马尔可夫决策过程的物联网入侵检测系统性能分析模型

Journal of Telecommunictions and Information Technology Pub Date : 2021-09-30 DOI: 10.26636/jtit.2021.151221

Gauri Kalnoor, G. S

引用次数: 1

High Temperature Effects in Fused Silica Optical Fibers 熔融石英光纤中的高温效应

Journal of Telecommunictions and Information Technology Pub Date : 2021-09-30 DOI: 10.26636/jtit.2021.153521

K. Borzycki, M. Jaworski, T. Kossek

{"title":"High Temperature Effects in Fused Silica Optical Fibers","authors":"K. Borzycki, M. Jaworski, T. Kossek","doi":"10.26636/jtit.2021.153521","DOIUrl":"https://doi.org/10.26636/jtit.2021.153521","url":null,"abstract":"Fire-resistant fiber optic cables used in safety and monitoring systems playing an essential role in fire fighting and building evacuation procedures are required to temporarily maintain optical continuity when exposed to fire. However, the use of fused silica fiber at temperatures between 800C and 1000C is associated with two highly undesirable phenomena. Thermal radiation (incandescence) of optical fibers, with its intensity and spectral distribution being proportional to additional attenuation observed in the fiber’s hydroxyl absorption bands (“water peaks”) is one of them. The other consists in penetration of thermal radiation from the surroundings into the fiber, due to defects in glass, causing light scattering and resulting in fiber brittleness. Thermal radiation is a source of interference in fiber attenuation measurements performed during fire tests and affects normal operation of fiber optic data links in the event of a fire. In this article, results of laboratory tests performed on a telecom single mode and multimode fibers subjected to temperatures of up to 1000C are presented. Keywords—fire-resistant fiber optic cable, fire test, fused silica optical fiber, incandescence spectrum, thermal deterioration, thermal radiation.","PeriodicalId":227678,"journal":{"name":"Journal of Telecommunictions and Information Technology","volume":"31 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-09-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130027624","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}

引用次数: 0