scholarly journals Space Weather Services for Civil Aviation—Challenges and Solutions

2021 ◽  
Vol 13 (18) ◽  
pp. 3685
Author(s):  
Kirsti Kauristie ◽  
Jesse Andries ◽  
Peter Beck ◽  
Jens Berdermann ◽  
David Berghmans ◽  
...  
Keyword(s):  
Space Weather ◽  
Empirical Models ◽  
Service Performance ◽  
Civil Aviation ◽  
Service Development ◽  
International Civil Aviation Organization ◽  
Ionosphere Model ◽  
Data Provision ◽  
Systematic Measuring

This paper presents a review on the PECASUS service, which provides advisories on enhanced space weather activity for civil aviation. The advisories are tailored according to the Standards and Recommended Practices of the International Civil Aviation Organization (ICAO). Advisories are disseminated in three impact areas: radiation levels at flight altitudes, GNSS-based navigation and positioning, and HF communication. The review, which is based on the experiences of the authors from two years of running pilot ICAO services, describes empirical models behind PECASUS products and lists ground- and space-based sensors, providing inputs for the models and 24/7 manual monitoring activities. As a concrete example of PECASUS performance, its products for a post-storm ionospheric F2-layer depression event are analyzed in more detail. As PECASUS models are particularly tailored to describe F2-layer thinning, they reproduce observations more accurately than the International Reference Ionosphere model (IRI(STORM)), but, on the other hand, it is recognized that the service performance is much affected by the coverage of its input data. Therefore, more efforts will be directed toward systematic measuring of the availability, timeliness and quality of the data provision in the next steps of the service development.

scholarly journals Reviewer Acknowledgements

2019 ◽  
Vol 7 (9) ◽  
pp. 124
Author(s):  
Robert Smith
Keyword(s):  
Music Education ◽  
Peer Review ◽  
Education And Training ◽  
Civil Aviation ◽  
International Civil Aviation Organization ◽  
University Of Kentucky ◽  
National University ◽  
And Training

Journal of Education and Training Studies (JETS) would like to acknowledge the following reviewers for their assistance with peer review of manuscripts for this issue. Many authors, regardless of whether JETS publishes their work, appreciate the helpful feedback provided by the reviewers. Their comments and suggestions were of great help to the authors in improving the quality of their papers. Each of the reviewers listed below returned at least one review for this issue.Reviewers for Volume 7, Number 9 Darren Pullen, University of Tasmania, AustraliaGianpiero Greco, University of Study of Bari, ItalyGuilherme Tucher, Universidade Federal do Rio de Janeiro (UFRJ), BrazilJohn Bosco Azigwe, Bolgatanga Polytechnic, GhanaLucy Lugo Mawang, Kenyatta University, KenyaMatt Varacallo, University of Kentucky, USAMehmet Galip Zorba, Akdeniz University, TurkeyMeral Seker, Alanya Alaaddin Keykubat University, TurkeyMichael Wall, Independent Researcher in Music and Music Education, USAOzgur Demirtas, Inonu University, TurkeySadia Batool, Preston University Islamabad, PakistanStamatis Papadakis, University of Crete, GreeceVjacheslav Ivanovich Babich, Luhansk Taras Shevchenko National University, UkraineYong Ki Yi, International Civil Aviation Organization, Korea Robert SmithEditorial AssistantOn behalf of,The Editorial Board of Journal of Education and Training StudiesRedfame Publishing9450 SW Gemini Dr. #99416Beaverton, OR 97008, USAURL: http://jets.redfame.com

scholarly journals Quality Assessment of the Services Delivered by a Court, Based on the Perceptions of Users, Magistrates, and Court Officials

2021 ◽  
Vol 13 (2) ◽  
pp. 504
Author(s):  
Patrícia Moura e Sá ◽  
Maria João Rosa ◽  
Gonçalo Santinha ◽  
Cátia Valente
Keyword(s):  
Service Quality ◽  
Service Providers ◽  
Service Performance ◽  
Technological Equipment ◽  
Perceived Service Quality ◽  
Positive View ◽  
Depth Interview

This paper aims to measure the quality of the services delivered by a court by assessing the satisfaction of court users and service providers, i.e., magistrates and court officials. For that purpose, a case study was carried out and data were collected by means of a questionnaire based on the SERVPERF instrument, in which perceived service quality is measured, considering court users, magistrates, and court officials’ perceptions of post-service performance. One hundred and fifty-eight questionnaires were successfully returned. An in-depth interview was later conducted to the court administrator to gain a richer understanding of the results achieved and ask follow-up questions. Overall, findings revealed that court users, magistrates, and court officials clearly have a positive view of the services provided, although improvement is needed, particularly in the court’s facilities and technological equipment. The current research sheds some light on the potentialities and difficulties of assessing service quality in the judiciary and contributes to the validation of the SERVPERF instrument in this context.

THE GLOBAL EXPERIENCE GAINED IN THE AREA OF AVIATION SECURITY FINANCING

Aviation ◽  
2014 ◽  
Vol 18 (2) ◽  
pp. 91-93 ◽  
Author(s):  
Valentyn Miziuk
Keyword(s):  
Aviation Security ◽  
Cost Recovery ◽  
Civil Aviation ◽  
International Civil Aviation Organization ◽  
Basic Principles

The paper discusses the basic principles of the International Civil Aviation Organization (ICAO) pertaining to the regulations of airport charges imposed for cost recovery to provide a standardized level of aviation security. The national and global experience gained in the area of aviation security financing is analyzed.

scholarly journals GSM Quality of Service Performance in Abuja, Nigeria

2017 ◽  
Vol 7 (3/4) ◽  
pp. 29-40 ◽  
Author(s):  
Alabi I Kehinde ◽  
Sagir Lawan ◽  
Fatai O Adunola ◽  
Alabi I Isaac
Keyword(s):  
Quality Of Service ◽  
Service Performance

scholarly journals Deterioration Causes Evaluation of Third Generation Cellular LTE Services for Moving Unmanned Terrestrial and Aerial Systems

2018 ◽  
Vol 14 (2) ◽  
pp. 141-148
Author(s):  
Deniss Brodņevs ◽  
Aleksandrs Kutins
Keyword(s):  
Data Transfer ◽  
Angular Position ◽  
Operating Conditions ◽  
Service Performance ◽  
Negative Effects ◽  
Lte Networks ◽  
Wireless Signal ◽  
Aerial Systems ◽  
Degradation Problem

AbstractWell-deployed cellular networks offer a cheap wireless solution for the control channel deployment of Remote-Control Vehicles (RCV) and Unmanned Aerial Vehicles (UAV). However, a cellular data transfer service performance is affected by a different kind of User Equipment (UE) mobility. Operating conditions of UAV imply working at different altitudes, variable velocities with accelerations/decelerations and rapidly changed antennas angular position, which lead the wireless signal to be prone to negative effects. Available field measurement studies are not sufficient to provide excessive information on degradation problem causes for UEs moving along a complex trajectory. This paper presents an evaluation of the service quality of live operational 3G and LTE networks for both ground moving and flying UE. It has been found that antennas angular position variations in 3D (for example, during UAV manoeuvers) increase data transfer latency and jitter. Moreover, this effect in conjunction with higher interference at high altitudes may partially or fully block the data transfer service. This paper has been prepared to draw attention to the problem that makes the cellular data transfer service unusable for highly-manoeuvrable UAVs.

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