Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Modelling, Simulation and Parameter Identification of Active Pollution
  Reduction with Photovoltaic Asphalt   We develop and implement a numerical model to simulate the effect of
photovoltaic asphalt on reducing the concentration of nitrogen monoxide due to
the presence of heavy traffic in an urban environment. The contributions in
this paper are threefold: we model and simulate the spread and breakdown of
pollution in an urban environment, we provide a parameter estimation process
that can be used to find missing parameters, and finally, we train and compare
this simulation with different data sets. We analyze the results and provide an
outlook on further research.

21
The categories of this paper are: adap-org
0
The categories of this paper are: hep-ph
22
The categories of this paper are: chao-dyn
27
The categories of this paper are: comp-gas
23
The categories of this paper are: solv-int
35
The categories of this paper are: mtrl-th
5
The categories of this paper are: gr-qc
12
The categories of this paper are: nucl-th
16
The categories of this paper are: stat
4
The categories of this paper are: cond-mat
19
The categories of this paper are: eess
10
The categories of this paper are: q-bio
30
The categories of this paper are: q-alg
28
The categories of this paper are: alg-geom
37
The categories of this paper are: supr-con
31
The categories of this paper are: ao-sci