Cyber Space and Aviation 4.0 – New Testing Facilities for Next Generation of Cyber-Physical, Autonomous and Air Traffic Control Systems

В статье рассмотрены основные функции, внедряемые в автоматизированных системах управления воздушным движением нового поколения.This article discusses the main functions implemented in the new generation of automated air traffic control systems.

Download Full-text

Graph-based ahead monitoring of vulnerabilities in large dynamic transportation networks

PLoS ONE ◽

10.1371/journal.pone.0248764 ◽

2021 ◽

Vol 16 (3) ◽

pp. e0248764

Author(s):

Angelo Furno ◽

Nour-Eddin El Faouzi ◽

Rajesh Sharma ◽

Eugenio Zimeo

Keyword(s):

Control Systems ◽

Traffic Control ◽

Large Scale ◽

Transportation Networks ◽

Smart Cities ◽

Dynamic Networks ◽

Computation Time ◽

Weighted Graphs ◽

Dynamic Graphs ◽

Physical Infrastructure

Betweenness Centrality (BC) has proven to be a fundamental metric in many domains to identify the components (nodes) of a system modelled as a graph that are mostly traversed by information flows thus being critical to the proper functioning of the system itself. In the transportation domain, the metric has been mainly adopted to discover topological bottlenecks of the physical infrastructure composed of roads or railways. The adoption of this metric to study the evolution of transportation networks that take into account also the dynamic conditions of traffic is in its infancy mainly due to the high computation time needed to compute BC in large dynamic graphs. This paper explores the adoption of dynamic BC, i.e., BC computed on dynamic large-scale graphs, modeling road networks and the related vehicular traffic, and proposes the adoption of a fast algorithm for ahead monitoring of transportation networks by computing approximated BC values under time constraints. The experimental analysis proves that, with a bounded and tolerable approximation, the algorithm computes BC on very large dynamically weighted graphs in a significantly shorter time if compared with exact computation. Moreover, since the proposed algorithm can be tuned for an ideal trade-off between performance and accuracy, our solution paves the way to quasi real-time monitoring of highly dynamic networks providing anticipated information about possible congested or vulnerable areas. Such knowledge can be exploited by travel assistance services or intelligent traffic control systems to perform informed re-routing and therefore enhance network resilience in smart cities.

Download Full-text

Considerations of Adapting Service-Offering Components to RESTful Architectures

Enterprise Resource Planning ◽

10.4018/978-1-4666-4153-2.ch081 ◽

2013 ◽

pp. 1522-1549

Author(s):

Michael Athanasopoulos ◽

Kostas Kontogiannis ◽

Chris Brealey

Keyword(s):

Process Model ◽

Large Scale ◽

Research Literature ◽

Functional Requirements ◽

Enterprise Software ◽

Architectural Style ◽

Model Driven ◽

Emerging Trends ◽

Service Oriented ◽

Service Offering

Over the past few years, we have witnessed a paradigm shift on the programming models and on architectural styles, which have been used to design and implement large-scale service-oriented systems. More specifically, the classic message-oriented and remote procedure call paradigm has gradually evolved to the resource-oriented architectural style, inspired by concepts pertinent to the World Wide Web. This shift has been primarily driven by multifaceted functional and non-functional requirements of Web enabled large-scale service offering systems. These requirements include enhanced interoperability, lightweight integration, scalability, enhanced performance, even looser coupling, and less dependence on shifting technology standards. As a consequence, several, and sometimes antagonistic, architectures, design patterns, and programming paradigms have emerged on a quest to overcome the constantly expanding enterprise software needs. In the context of resource-oriented architectures, the Representational State Transfer (REST) architectural style has gained considerable attention due to its simplicity, uniformity, and flexibility. More specifically, the potential for scalability and loose coupling, the uniformity of interfaces, and the efficient bridging of enterprise software systems with the Web are significant factors for software architects and engineers to consider REST when designing, implementing, composing, and deploying service-oriented systems. These issues stir discussion among academics and practitioners about how to properly apply REST constraints both with respect to the development of new enterprise systems and to the migration and adaptation of existing service-oriented systems to RESTful architectures. In this chapter, the authors discuss issues and challenges related to the adaptation of existing service-oriented systems to a RESTful architecture. First, they present the motivation behind such an adaptation need. Second, the authors discuss related adaptation theory, techniques, and challenges that have been recently presented in the research literature. Third, they identify and present several considerations and dimensions that the adaptation to REST entails, and the authors present frameworks to assess resource-oriented designs with regard to compliance to REST. Fourth, the authors introduce an adaptation framework process model in the context of enterprise computing systems and technologies, such as Model Driven Engineering and Service Component Architecture (SCA). Furthermore, they discuss open challenges and considerations on how such an adaptation process to REST can be extended, in order to yield systems that best conform to the REST architectural style and the corresponding REST constraints. Finally, the chapter is concluded with a summary and a discussion on the points raised and on some emerging trends in this area.

Download Full-text

Considerations of Adapting Service-Offering Components to RESTful Architectures

Migrating Legacy Applications ◽

10.4018/978-1-4666-2488-7.ch013 ◽

2012 ◽

pp. 303-331

Author(s):

Michael Athanasopoulos ◽

Kostas Kontogiannis ◽

Chris Brealey

Keyword(s):

Process Model ◽

Large Scale ◽

Research Literature ◽

Functional Requirements ◽

Enterprise Software ◽

Architectural Style ◽

Model Driven ◽

Emerging Trends ◽

Service Oriented ◽

Service Offering

Over the past few years, we have witnessed a paradigm shift on the programming models and on architectural styles, which have been used to design and implement large-scale service-oriented systems. More specifically, the classic message-oriented and remote procedure call paradigm has gradually evolved to the resource-oriented architectural style, inspired by concepts pertinent to the World Wide Web. This shift has been primarily driven by multifaceted functional and non-functional requirements of Web enabled large-scale service offering systems. These requirements include enhanced interoperability, lightweight integration, scalability, enhanced performance, even looser coupling, and less dependence on shifting technology standards. As a consequence, several, and sometimes antagonistic, architectures, design patterns, and programming paradigms have emerged on a quest to overcome the constantly expanding enterprise software needs. In the context of resource-oriented architectures, the Representational State Transfer (REST) architectural style has gained considerable attention due to its simplicity, uniformity, and flexibility. More specifically, the potential for scalability and loose coupling, the uniformity of interfaces, and the efficient bridging of enterprise software systems with the Web are significant factors for software architects and engineers to consider REST when designing, implementing, composing, and deploying service-oriented systems. These issues stir discussion among academics and practitioners about how to properly apply REST constraints both with respect to the development of new enterprise systems and to the migration and adaptation of existing service-oriented systems to RESTful architectures. In this chapter, the authors discuss issues and challenges related to the adaptation of existing service-oriented systems to a RESTful architecture. First, they present the motivation behind such an adaptation need. Second, the authors discuss related adaptation theory, techniques, and challenges that have been recently presented in the research literature. Third, they identify and present several considerations and dimensions that the adaptation to REST entails, and the authors present frameworks to assess resource-oriented designs with regard to compliance to REST. Fourth, the authors introduce an adaptation framework process model in the context of enterprise computing systems and technologies, such as Model Driven Engineering and Service Component Architecture (SCA). Furthermore, they discuss open challenges and considerations on how such an adaptation process to REST can be extended, in order to yield systems that best conform to the REST architectural style and the corresponding REST constraints. Finally, the chapter is concluded with a summary and a discussion on the points raised and on some emerging trends in this area.

Download Full-text