Id |
Subject |
Object |
Predicate |
Lexical cue |
T49 |
0-26 |
Sentence |
denotes |
Data source and collection |
T50 |
27-133 |
Sentence |
denotes |
The following secondary data were used to analyze the nationwide traffic alongside the trends in COVID-19. |
T51 |
134-486 |
Sentence |
denotes |
First, a suitable data set was constructed using point data for traffic provided in the public data portal of the Korea Expressway Corporation (http://data.ex.co.kr/portal/fdwn/view?type=VDS&num=37&requestfrom=dataset#) and public data on confirmed COVID-19 patients released by the Korea Centers for Disease Control and Prevention (KCDC) (KCDC, 2020). |
T52 |
487-602 |
Sentence |
denotes |
Traffic data were based on vehicle detection systems (VDS), which measure the traffic passing over specific points. |
T53 |
603-680 |
Sentence |
denotes |
These systems use both in-ground and above-ground sensors (Figures 1 and 2) . |
T54 |
681-750 |
Sentence |
denotes |
The data set included information collected from 7488 VDS nationwide. |
T55 |
751-855 |
Sentence |
denotes |
Data from 1181 of these were excluded as they lacked GIS WGS84 coordinates, leaving a total of 6307 VDS. |
T56 |
856-916 |
Sentence |
denotes |
The map in Figure 3 displays the included VDS as round dots. |
T57 |
917-940 |
Sentence |
denotes |
Figure 1 In-ground VDS. |
T58 |
941-967 |
Sentence |
denotes |
Figure 2 Above-ground VDS. |
T59 |
968-1000 |
Sentence |
denotes |
Figure 3 VDS installation spots. |
T60 |
1001-1191 |
Sentence |
denotes |
COVID-19 patient trends in South Korea were analyzed using the statistics from the KCDC on ‘daily new confirmed patient count’ and ‘cumulative number of individuals released from isolation’. |
T61 |
1192-1383 |
Sentence |
denotes |
The regional statistics for daily new confirmed patients and cumulative number of individuals released from isolation were obtained by visiting the individual city/province/county’s homepage. |
T62 |
1384-1440 |
Sentence |
denotes |
A suitable data set was then constructed for this study. |