Mid-air hand interaction with optical tracking for 3D modelling by Cui, Jian

“…After surveying the relevant works and analyzing technical capabilities of the commonly available optical sensors, two approaches are thoroughly investigated for the natural mid-air hand interaction in precise 3D modeling – they are collision-based and gesture-based interaction. …”
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Airspace capacity overload identification using collision risk patterns by Ma, Chunyao, Cai, Qing, Alam, Sameer, Duong, Vu N.

“…Since the primary task of air traffic controllers is to manage traffic flow within the constraints imposed by safety requirements, i.e., to warrant the collision risk at a low level, in this paper, we use the aircraft mid-air collision risk for a given airspace as the indicator of airspace capacity overload. …”
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Pre-tactical airspace collision risk model for air traffic controller by Ngoi, Kai Ling

“…This will potentially lead to mid-air collision. With the increasing workload, more errors will be made by ATCOs that contributes to mid-air collision. …”
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Same-track UAS separation requirement evaluation with Monte-Carlo based collision risk modeling by Wang, John Chung Hung, Deng, Chao, Low, Kin Huat

“…To determine the separation needed to prevent mid-air collision for UAS, specifically multirotor, traveling along the same track, a modified Reich collision risk model with multirotor specific flight dynamics and Monte-Carlo method was used. …”
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Collision risk assessment of reduced aircraft separation minima in procedural airspace using advanced communication and navigation by Cai, Qing, Ang, Haojie, Alam, Sameer

“…In order to maintain safety of air traffic operations, stringent aircraft separation standards are in place to reduce mid-air collisions. Note that the separation minima for aircraft flying in a procedural airspace (limited Communication, Navigation and Surveillance (CNS) services) are normally larger than those for a non-procedural airspace. …”
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Parametric study of structured UTM separation recommendations with physics-based Monte Carlo distribution for collision risk model by Wang, John Chung-Hung, Deng, Chao, Low, Kin Huat

“…One layer of defense against mid-air-collision and the ensuing third-party injury or fatality is the pre-flight separation assurance. …”
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Damage severity prediction of helicopter windshields caused by a collision with a small unmanned aerial vehicle (sUAV) by Mohd Hasrizam Che Man, Low, Kin Huat

“…Increased in sUAV traffic in future may lead to higher chance of collision between sUAV with other airspace users where mid-air collision debris might fall and endanger peoples on the ground. …”
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3D path planning and real-time collision resolution of multirotor drone operations in complex urban low-altitude airspace by Zhang, Na, Zhang, Mingcheng, Low, Kin Huat

“…Subsequently, a local collision resolution method is proposed to avoid near mid-air collision of the dynamic threats. …”
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Human factors evaluation of conflict resolution aid in future air traffic control by Fitri Trapsilawati

“…As a pertinent evidence, in 2004, 2009, 2013, and 2014 there were 144, 72, 112, and 163 cases respectively of near/mid-air collisions (U.S. Department of Transportation, 2014). …”
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