Synchronous collaboration sessions within the context of 4D BIM position construction professionals into a complex socio—technical system.This system includes hardware,software,people,and broader community aspects.Th...Synchronous collaboration sessions within the context of 4D BIM position construction professionals into a complex socio—technical system.This system includes hardware,software,people,and broader community aspects.This article strictly focuses on the ontology representation of synchronous collaboration sessions with collocated collective decision-making.The model is designed by considering various 4D BIM model uses while a digital multiuser touch table facilitates the collaboration between actors.The outlined ontological model aims to improve interoperability and to move toward a knowledge-driven,smart-built environment paradigm.A knowledge engineering methodology is outlined,by virtue of which the semantics of the presented model are defined and discussed.Concepts from nearby knowledge fields,especially from the Industry Foundation Classes,are reused.Several examples on querying the knowledge base according to the project meeting requirements are outlined to demonstrate the benefits of using the model.Although 4D BIM model data can be imported by using standard formats,capturing data about the social context remains a challenge in the future.This is expected to change the ontology model structure by considering user ergonomics,data modeling requirements,as well as technical implementation constraints.展开更多
Only a small amount of work has been published on the topic of exploiting existing Long-Term Evolution-Advanced(LTE)cellular communication network infrastructure for Unmanned Aerial Vehicles(UAV)data links.This paper ...Only a small amount of work has been published on the topic of exploiting existing Long-Term Evolution-Advanced(LTE)cellular communication network infrastructure for Unmanned Aerial Vehicles(UAV)data links.This paper documents a modeling and simulation(m&s)framework that has been developed utilizing the powerful OMNeT++simulation tool for assessing the feasibility and effectiveness of this prospect in various UAV scenarios.Using multiple scenarios,we have studied the data rate requirements for communications between small and medium-sized UAVs and base stations.Using this framework,we have shown that the data rate requirements for the links are within the data throughput achieved by LTE networks.The developed framework implements a propagation model endorsed by the 3GPP LTE project team and also accurately models the high mobility of UAVs.The framework is highly configurable and extensible and boasts of automatic aggregation of results and chart plotting.The outcomes of this research may be utilized by industry for rapidly deploying highly mobile,low-cost UAVs in a wide range of applications and scenarios.展开更多
基金supported by Fonds National de la Recherche(FNR)Luxembourg,and Agence Nationale de la Recherche(ANR)France(Grant No.11237662(LU)and ANR-16-CE10-0006-01(FR)).
文摘Synchronous collaboration sessions within the context of 4D BIM position construction professionals into a complex socio—technical system.This system includes hardware,software,people,and broader community aspects.This article strictly focuses on the ontology representation of synchronous collaboration sessions with collocated collective decision-making.The model is designed by considering various 4D BIM model uses while a digital multiuser touch table facilitates the collaboration between actors.The outlined ontological model aims to improve interoperability and to move toward a knowledge-driven,smart-built environment paradigm.A knowledge engineering methodology is outlined,by virtue of which the semantics of the presented model are defined and discussed.Concepts from nearby knowledge fields,especially from the Industry Foundation Classes,are reused.Several examples on querying the knowledge base according to the project meeting requirements are outlined to demonstrate the benefits of using the model.Although 4D BIM model data can be imported by using standard formats,capturing data about the social context remains a challenge in the future.This is expected to change the ontology model structure by considering user ergonomics,data modeling requirements,as well as technical implementation constraints.
文摘Only a small amount of work has been published on the topic of exploiting existing Long-Term Evolution-Advanced(LTE)cellular communication network infrastructure for Unmanned Aerial Vehicles(UAV)data links.This paper documents a modeling and simulation(m&s)framework that has been developed utilizing the powerful OMNeT++simulation tool for assessing the feasibility and effectiveness of this prospect in various UAV scenarios.Using multiple scenarios,we have studied the data rate requirements for communications between small and medium-sized UAVs and base stations.Using this framework,we have shown that the data rate requirements for the links are within the data throughput achieved by LTE networks.The developed framework implements a propagation model endorsed by the 3GPP LTE project team and also accurately models the high mobility of UAVs.The framework is highly configurable and extensible and boasts of automatic aggregation of results and chart plotting.The outcomes of this research may be utilized by industry for rapidly deploying highly mobile,low-cost UAVs in a wide range of applications and scenarios.
