Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Risk Analysis of Unmanned Aerial System Operations in Urban Airspace
  Considering Spatiotemporal Population Dynamics   This study aims to estimate the fatality risk of Unmanned Aerial System (UAS)
operations from a population perspective using high-resolution de facto
population data. In doing so, it provides more practical risk values compared
to the risk values derived from the residential population data. We then set
restricted airspace using the risk values and the acceptable level of safety.
We regard the restricted airspace as airspace being blocked by a dynamic
obstacle. Scenario analysis on the study area in Seoul, South Korea presents a
richer set of results for time-dependent differences in restricted airspace.
Especially during the daytime, the restricted airspace is clustered around
commercial and business areas. The difference between restricting airspace
based on residential population-derived risk and restricting airspace based on
de facto population-derived risk is also observed. The findings confirm the
importance of accurately taking into account population density when assessing
and mitigating the risk of UAS operations. Sensitivity analysis also reveals
the importance of an accurate estimate of population density when estimating
the risk.

35
The categories of this paper are: mtrl-th
25
The categories of this paper are: patt-sol
32
The categories of this paper are: atom-ph
5
The categories of this paper are: gr-qc
26
The categories of this paper are: bayes-an
14
The categories of this paper are: math-ph
31
The categories of this paper are: ao-sci
9
The categories of this paper are: nlin
11
The categories of this paper are: hep-lat
15
The categories of this paper are: nucl-ex
21
The categories of this paper are: adap-org
36
The categories of this paper are: cmp-lg
37
The categories of this paper are: supr-con
1
The categories of this paper are: cs
29
The categories of this paper are: funct-an
22
The categories of this paper are: chao-dyn