|
|
|
|
|
Peberlin Parulian Sitompul, Pakhrur Razi, Timbul Manik, Mario Batubara, Musthofa Lathif, Farahhati Mumtahana, Rizal Suryana, Ibnu Nurul Huda, Taufiq Hidayat, Yana Taryana and Farhan Sobirin
After years of preparation, the Indonesia National Observatory, located in Mount Timau, Kupang Regency, is currently in the completion stage of research in astronomy and astrophysics and related subjects. An optic telescope with a 3.8 m diameter is expec...
ver más
|
|
|
|
|
|
|
|
|
|
|
Peberlin Parulian Sitompul, Timbul Manik, Mario Batubara and Bambang Suhandi
We report on the measurements of radio frequency interference (RFI) at Mount Timau, Kupang, Indonesia, which is intended to host a future radio astronomy observatory. These measurements were taken twice in October 2020 and December 2020 to obtain the RFI...
ver más
|
|
|
|
|
|
|
|
|
|
|
Gerardo Quintana Galiana
Pág. 71 - 77
El presente trabajo es una aproximación al informativo Radio Hora, que se emitió en España desde 1972 -en pleno ocaso del franquismo- hasta 1998, a través de Radio España (954 Onda Media). Se trata de un objeto de análisis novedoso, a pesar de ser muy po...
ver más
|
|
|
|
|
|
|
|
|
|
|
Luis A. Camuñas-Mesa and José M. de la Rosa
The paradigm known as Cognitive Radio (CR) proposes a continuous sensing of the electromagnetic spectrum in order to dynamically modify transmission parameters, making intelligent use of the environment by taking advantage of different techniques such as...
ver más
|
|
|
|
|
|
|
|
|
|
|
Florin Radu, Petru A. Cotfas, Marian Alexandru, Titus C. Balan, Vlad Popescu and Daniel T. Cotfas
In this paper, we present the implementation of a system that identifies the modulation of complex radio signals. This is realized using an artificial intelligence model developed, trained, and integrated with Microsoft Azure cloud. We consider that clou...
ver más
|
|
|
|
|
|
|
|
|
|
|
Ramson Munyaradzi Nyamukondiwa, Necmi Cihan Orger, Daisuke Nakayama and Mengu Cho
The atmospheric total water vapor content (TWVC) affects climate change, weather patterns, and radio signal propagation. Recent techniques such as global navigation satellite systems (GNSS) are used to measure TWVC but with either compromised accuracy, t...
ver más
|
|
|
|
|
|
|
|
|
|
|
Antonios Constantinides, Haris Haralambous, Harris Papadopoulos and Michalis Makrominas
Interference from other users, due to the long-distance propagation of HF signals, causes spectral congestion, which is considered a primary detrimental effect on HF (3?30 MHz) communication systems. More than a year of HF electric field measurements fro...
ver más
|
|
|
|
|
|
|
|
|
|
|
Hicham Megnafi
Pág. 217 - 223
Cellular networks are constantly evolving to ensure a better Quality of Service (QoS) and quality of coverage ever more important. The radio cellular systems are based on frequency allocation. In this context, frequency allocation principle consists in c...
ver más
|
|
|
|
|
|
|
|
|
|
|
Perla Olivia Rodríguez Reséndiz
Pág. 41 - 47
El artículo ofrece la revisión histórica y perspectiva de futuro de los archivos de la radio pública en México resultado de investigación cualitativa basada en estudios de caso y el análisis de documentación de emisoras de servicio público. Se establece ...
ver más
|
|
|
|
|
|
|
|
|
|
|
Patricia Cocq Muñoz
Pág. Pág. 37 - 55
El presente artículo aborda los referentes teóricos para la elaboración de una propuesta de taller de radio desarrollado desde una perspectiva de educación en derechos humanos, orientado a niños, niñas y jóvenes de sectores sociales vulnerables, además d...
ver más
|
|
|
|
|
|
|
|
|
|
|
Andrés Barrios Rubio
Pág. Pág. 113 - 131
En casi 100 años de historia la radio colombiana ha hecho frente a diversos avances tecnológicos y movimientos sociales que la han llevado a reinventarse y adecuarse a las situaciones de la época. En este sentido la radio comercial, de interés público y ...
ver más
|
|
|
|
|
|
|
|
|
|
|
Seiki Chiba and Mikio Waki
Using a sample coated with three types of carbon-based paints, namely single-wall carbon nanotube (SWCNTs), carbon black, and graphite, the amount of radio wave absorption for each was measured. SWCNTs proved to have the superior radio wave absorption ef...
ver más
|
|
|
|
|
|
|
|
|
|
|
Camilo Salas Sandoval, Isabel González Pastrán, Constanza Román Avilés, Marta González Pastrán
Pág. Pág. 57 - 71
El artículo describe las principales características de Radio Nueva Terapia (RNT), proyecto comunicacional que se realiza en la comuna de Colina (Chile), y que consiste en la realización de programas radiales con personas con trastorno mental grave. La f...
ver más
|
|
|
|
|
|
|
|
|
|
|
??????? ??????????? ???????????, ?????? ???????????? ?????????, ???????? ?????????? ?????????, ???? ????????????? ?????, ??????? ???????? ???????
Pág. 82 - 89
The subject of the study are methods and models for extracting information about the processes of the life cycle of radio electronic means at the design, production and operation stages. The goal is to develop the fundamentals of the theory of holistic m...
ver más
|
|
|
|
|
|
|
|
|
|
|
Amin Salih Mohammed,Ihor Romanenko,Saravana Balaji B,Yevhen Kalashnikov,Nina Kuchuk
Pág. pp. 224 - 245
Due to an increase in the number of radio devices with different types of signals and to increase the speed of information transmission, it is necessary to take into account the increase in the probability of erroneous reception of signals as a result of...
ver más
|
|
|
|
|
|
|
|
|
|
|
Paul Koch and Stefan Gewies
The Ranging Mode (R-Mode), a maritime terrestrial navigation system under development, is a promising approach to increase the resilient provision of position, navigation and timing (PNT) information for bridge instruments, which rely on Global Navigatio...
ver más
|
|
|
|
|
|
|
|
|
|
|
Khaled Shuaib, Ezedin Barka, Nedaa Al Hussien, Mohammed Abdel-Hafez and Mahmoud Alahmad
In this paper, we investigate how Cognitive Radio as a means of communication can be utilized to serve a smart grid deployment end to end, from a home area network to power generation. We show how Cognitive Radio can be mapped to integrate the possible d...
ver más
|
|
|
|
|
|
|
|
|
|
|
Nikola Pfauserová, Ondrej Slavík, Pavel Horký, Jitka Kolárová and Tomá? Randák
The introduction of non-native species and human-altered habitats are currently the main threats to freshwater ecosystems. Due to predation and competition, biological invaders can cause extinctions and imperil the status of native species, and this phen...
ver más
|
|
|
|
|
|
|
|
|
|
|
Charlotte Wehner, Bradley Shirley, Garrett Mathesen, Julian Merrick, Brandon Weatherford and Emilio Alessandro Nanni
The manufacturing of active RF devices like klystrons is dominated by expensive and time-consuming cycles of machining and brazing. In this article, we characterize the RF properties of X-band klystron cavities and an integrated circuit manufactured with...
ver más
|
|
|
|
|
|
|
|
|
|
|
Sojeong Roh, Trong Danh Nguyen and Jun Seop Lee
Radio Frequency Identification (RFID) technology, capable of wirelessly processing large amounts of information, is gaining attention with the advancement of IoT technology. RFID systems can be utilized as Wireless Sensor Network (WSN) technology by intr...
ver más
|
|
|
|
|
|