Results 21 to 30 of about 412,149 (269)

Spectral variability in faint high frequency peakers [PDF]

, 2010
We present the analysis of simultaneous multi-frequency Very Large Array (VLA) observations of 57 out of 61 sources from the ``faint'' high frequency peaker (HFP) sample carried out in various epochs.
Abazajian, Alberdi, Bicknell, C. Stanghellini, D. Dallacasa, Dallacasa, Fanti, Fanti, Fanti, Jauncey, Kaiser, M. Orienti, O'Dea, O'Dea, O'Dea, Orienti, Orienti, Orienti, Orienti, Orienti, Orienti, Pacholczyk, Snellen, Snellen, Snellen, Snellen, Snellen, Stanghellini, Stanghellini, Stanghellini, Tingay, Tinti, Torniainen, Torniainen   +33 more
core   +1 more source

A novel reverse design method of tag antenna based on image analysis

Journal of Algorithms & Computational Technology, 2020
Since the working efficiency of the entire radio frequency identification system depends on the performance of the radio frequency identification tag antenna, the research and design of the tag antenna have received attention, especially for radio ...
Zhenlu Liu, Zhimin Zhao, Xiaolei Yu, Mengjie Liu, Rendong Ji   +4 more
doaj   +1 more source

RADIO FREQUENCY IDENTIFICATION

International Journal of Innovative Research in Advanced Engineering, 2022
Radio-frequency identification (RFID) is a technology that uses communication via electromagnetic waves to exchange data between a terminal and an electronic tag attached to an object, for the purpose of identification and tracking. Some tags can be read from several meters away and beyond the line of sight of the reader. Radio-frequency identification
openaire   +1 more source

Optimizing radio frequency identification network planning through ring probabilistic logic neurons

Advances in Mechanical Engineering, 2016
Radio frequency identification is a developing technology that has recently been adopted in industrial applications for identification and tracking operations.
Aydin Azizi, Ali Vatankhah Barenji, Majid Hashmipour   +2 more
doaj   +1 more source

A three-dimensional localization algorithm for passive radio-frequency identification device tag

International Journal of Distributed Sensor Networks, 2017
The accuracy and efficiency of radio-frequency identification device tag localization is significant to a large number of existing and upcoming radio-frequency identification device applications.
Fagui Liu, Dexiang Zhong, Songchao Luo
doaj   +1 more source

Inertial measurement unit–aided dual-frequency radio frequency identification localization in line-of-sight and non-line-of-sight hybrid environment

International Journal of Distributed Sensor Networks, 2018
The mitigation of non-line-of-sight propagation conditions is one of main challenges in wireless signal–based indoor localization. When radio frequency identification localization technology is applied in applications, the received signal strength ...
Jie Wu, Minghua Zhu, Bo Xiao, Wei He
doaj   +1 more source

A novel Radio Frequency Identification three-dimensional indoor positioning system based on trilateral positioning algorithm

Journal of Algorithms & Computational Technology, 2016
GPS have been able to offer a commercially available outdoor positioning services; however, since the quality of satellite signals declines after entering into the indoor environment, the GPS system cannot provide indoor positioning services.
He Xu, Ye Ding, Ruchuan Wang, Weiwei Shen, Peng Li   +4 more
doaj   +1 more source

Continuously tracking of moving object by a combination of ultra-high frequency radio-frequency identification and laser range finder

International Journal of Distributed Sensor Networks, 2019
Due to the unique and contactless way of identification, radio-frequency identification is becoming an emerging technology for objects tracking. As radio-frequency identification does not provide any distance or bearing information, positioning using ...
Yulu Fu, Ran Liu, Hua Zhang, Gaoli Liang, Shafiq ur Rehman, Lixiang Liu   +5 more
doaj   +1 more source

SISTEM AUTENTIKASI PRESENSI MAHASISWA BERBASIS RADIO FREQUENCY IDENTIFICATION (RFID)

Sistemasi: Jurnal Sistem Informasi, 2019
Salah satu faktor penting di dalam sistem perkuliahan adalah presensi, karena selain digunakan sebagai tanda bukti bahwa seorang mahasiswa mengikuti kegiatan perkuliahan juga sering kali digunakan oleh dosen sebagai salah satu faktor dalam melakukan ...
Majid Rahardi, Rohmad Fajarudin
doaj   +1 more source

Efficient authentication scheme with tag-identity protection for EPC Class 2 Generation 2 version 2 standards

International Journal of Distributed Sensor Networks, 2017
Various radio-frequency identification standards and products have been designed to meet various market needs. To satisfy various requirements and integrate important features of existent standards, EPCglobal (2013/11) announced the new Gen2 standard ...
Hung-Yu Chien
doaj   +1 more source