# Analysis of Development Coordination Levels between Skywalk Systems and Urban Spatial Environments
## 3 Materials and Methods
### Cases
\begin{table}
\begin{tabular}{c c c c c} \hline \hline
**OBJ** & **First Indicators** & **Secondary Indicators** & **Interpretation of Indicators** & **References** \\ \hline \multirow{8}{*}{B1 Scale} & C1 Length & The existing length of the skywalk & [36] \\  & C2 Width & Average of all skywalk widths & [37] \\  & C3 Number of & Total number of neighborhoods traversed by & [6] \\  & connected blocks & the skywalk & [6] \\ \cline{2-5}  & \multirow{4}{*}{B2 Plan} & C4 Connection only & The skywalk only serves to connect the two buildings & \\  & B2 Plan & C5 Through the building & Skywalk runs through the building and takes up space & \\  & connection strength & C6 Attached & Skywalk is attached to the building & \\  & & C7 Nodal & The skywalk zooms in locally to form spatial nodes & \\ \cline{2-5} Skywalk & \multirow{4}{*}{B3 Profile} & C8 Low area connection & The skywalk is located on the lower level of the & \\  & & & building and connects the commercial & \\ System & connection strength & C9 High area connection & The skywalk is located on the upper floors of the & \\ \cline{2-5}  & \multirow{4}{*}{B4 The spatial structure} & C10 Linear & Only linear and weakly connected & \\  & & C11 Nodal & Diffuse and more connected & \\  & & C12 Network & Build on the first two to a particular scale & \\ \cline{2-5}  & B5 Vertical & C13 Inside the building & Vertical transportation on the skywalk is located & [5] \\  & transportation & C14 Outside the building & indoors or outdoors & \\ \cline{2-5}  & \multirow{4}{*}{B6 Closure attribute} & C15 Closed & & [39] \\  & & C16 Roofless and & & \\  & windowless & & & \\  & C17 Covered and & & & \\  & windowless & & & \\ \hline \multirow{8}{*}{B1 Natural Environment} & C1 Number of days with & Number of days with & \\  & extreme temperatures & than 0 \({}^{\circ}\)C or daily maximum temperature greater & [42] \\  & B1 & C2 Average annual & & \\  & Natural & temperature & & \\  & Environment & & & \\ \cline{2-5}  & C3 Average annual rainfall & Total rainfall for a given location over a number of & \\  & & C4 Average & & \\  & annual snowfall & Total snowfall for a given location for many years & \\  & Urban spatial & & & \\ environmental & & & & \\ indicator & & C5 Crime index & Crime rates or safety factors published on & \\  & indicator & & websites/reports & \\ system & & C6 Level of Bachelor’s & The proportion of the total population with a university & \\  & & Degree Education & degree or higher in the region & \\  & B2 Socio-economic & C7 Average annual & Average annual household income as published on & \\  & environment & household income & websites/reports & \\  & & CS White-collar & White-collar workers in the region as a percentage of & \\  & & employment rate & the employed population & \\  & & C9 Population & Total population in areas with skywalk construction & [45] \\ \hline \multirow{8}{*}{B3 Urban built environment} & C10 Population density & The ratio of regional population to the regional area & [8] \\  & C11 Area & The site area of the area where the skywalk & [5] \\  & & is constructed & & \\ \cline{1-1}  & B3 Urban built environment & C12 User satisfaction & Pedestrian perceptions of skywalk use & [36] \\ \cline{1-1}  & C13 Construction of & Whether an underground walkway is also being & \\ \cline{1-1}  & underground walkways & constructed in the area where the skywalk is installed & [8,39] \\ \cline{1-1}  & C14 Length-to-Width & The ratio of the long side to the short side of the block & [3] \\ \hline \multirow{8}{*}{B3 Urban built environment} & C10 Population density & The ratio of regional population to the regional area & [8] \\ \cline{1-1}  & C11 Area & The site area of the area where the skywalk & [5] \\ \cline{1-1}  & B3 Urban built environment & C12 User satisfaction & Pedestrian perceptions of skywalk use & [36] \\ \cline{1-1}  & C13 Construction of & Whether an underground walkway is also being & \\ \cline{1-1}  & underground walkways & constructed in the area where the skywalk is installed & [8,39] \\ \cline{1-1}  & C14 Length-to-Width & The ratio of the long side to the short side of the block & [3] \\ \hline \multirow{8}{*}{B3 Urban built environment} & Among these indicators, C4-C17 are logic variables, with data derived from map analysis and street view observations. The assignment rule is “1” for “yes”, and “0” for “no”. The C12 indicators of an urban environment are categorical variables, sourced from questionnaires. The assignment rules are “1” for “good feeling”, “2” for “fair feeling”, and “3” for “poor feeling”. The C13 indicators of the urban environment are also logic variables. The assignment rule is “1” for “yes” and “0” for “no.” The C12 data are taken from a questionnaire; the link to the questionnaire is [[https://www.wjv.cn/vvm/P07](https://www.wjv.cn/vvm/P07) rmQ6.aspx#]([https://www.wjv.cn/vvm/P07](https://www.wjv.cn/vvm/P07) rmQ6.aspx#) (accessed on 15 January 2024) & \\ \cline{1-1}  & & & \\ \cline{1-1}  & & & \\ \cline{1-1}  & & & \\ \cline{1-1}  & & & \\ \cline{1-1}  & & & \\ \hline \end{tabular}
\end{table}