Results 31 to 40 of about 36,701 (157)

Reclaiming the Street for Pedestrians as a Sustainable City Approach

open access: yesInternational Journal of Technology, 2018
Sustainable infrastructure has become a new trend that is encouraged in cities around the world. With the increasing population growth of large cities, such as Jakarta, the land use structure has been changing.
Annisa Namirah Zahra, Herlily
doaj   +1 more source

System Autonomy for Space Traffic Management [PDF]

open access: yes2018 IEEE/AIAA 37th Digital Avionics Systems Conference (DASC), 2018
This paper proposes an initial architecture for a Space Traffic Management (STM) system, based on openApplication Programming Interfaces (APIs) and drawing on previous work by the NASA Ames Research Center (ARC) to develop an architecture for low-altitude Unmanned Aerial System Traffic Management (UTM). The authors explore how autonomy could be used to
Sreeja Nag   +3 more
openaire   +1 more source

Crash Prediction on Expressway Incorporating Traffic Flow Continuity Parameters Based on Machine Learning Approach

open access: yesJournal of Advanced Transportation, 2021
Real-time crash prediction helps identify and prevent the occurrence of traffic crash. For years, various real-time crash prediction models have been investigated to provide effective information for proactive traffic management.
Tian Lei   +3 more
doaj   +1 more source

Spatial analysis of traffic accidents based on WaveCluster and vehicle communication system data

open access: yesEURASIP Journal on Wireless Communications and Networking, 2019
The frequent occurrence of traffic accidents has always been an important problem troubling traffic safety management, so exploring the law and characteristics of case occurrence in a space area has profound significance for the prevention of traffic ...
Junhui Zhang, Tuo Shi
doaj   +1 more source

Model Predictive Traffic Control by Bi-Level Optimization

open access: yesApplied Sciences, 2022
A bi-level model for traffic signal optimization is developed. The model predictive framework is applied for traffic control in an urban traffic network. The potential of the bi-level formalization is used to increase the space of control influences with
Krasimira Stoilova, Todor Stoilov
doaj   +1 more source

Retroreflectors for space traffic management [PDF]

open access: yesApplied Optics
Satellite laser ranging (SLR) is a mature technology for precise orbit determination of satellites equipped with retroreflectors. While SLR has a long history in space geodesy, precise orbits of satellites are also very important to calculate collision probabilities of satellites.
Moritz Vogel   +4 more
openaire   +1 more source

The Enforcement of Law and Policy on STM with the Emergence of Advanced Technologies [PDF]

open access: yesAdvanced Space Law
Space Traffic Management (STM) using advanced technologies is effective for the safety and sustainability of outer space by improving Space Situational Awareness (SSA), data sharing information system, collision avoidance, and space debris mitigation ...
Elham Farahani, Shouping Li
doaj   +1 more source

Traffic emissions management using capacity formulation and multi‐modal road space allocation

open access: yesIET Intelligent Transport Systems, 2022
The ever‐rising traffic volumes and congestion in cities have long constituted concerns for traffic safety and the economy. Moreover, traffic has been recognised as a significant contributor to emissions leading to serious environmental and public health
Amina Baby Abubakar, Goktug Tenekeci
doaj   +1 more source

Evaluating U-Space for UAM in Dense Controlled Airspace

open access: yesDrones, 2023
The operation of unmanned aircraft systems in shared airspace can serve as an accelerator for the global economy and a sensitive addition to the existing mix of transportation modes.
Michal Černý   +4 more
doaj   +1 more source

Space traffic management in the new space era

open access: yesJournal of Space Safety Engineering, 2019
Abstract Major changes are expected in the space environment due to the imminent launch of NewSpace (sometimes Space 2.0) systems, particularly large low Earth orbit (LEO) constellations that will change the space operations environment. This new activity could overwhelm current space flight safety processes. However, there are many encouraging signs
Theodore J. Muelhaupt   +3 more
openaire   +1 more source

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