## 2 Materials and Methods
### Gentrification Node's Types
#### 2.1.1 Case Choice  
We established an initial criterion to ensure adequate elucidation of our work. It includes the selection of commercial promenades and hubs within new urban communities based on previous studies conducted by [4] in the Greater Cairo Area (GCA). The further criterion for the cases' selection was about choosing four gentrification nodes designed by the same architect (Figure 3). Figure 2: Research design and the analytical approach (authors). \begin{table}
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Table 1: GNs spatial organization and customers’ segmentation summary. Given the importance and the role of gentrification nodes as the new city centers in new urban communities, it is discussed how these properties' spatial/social resilience can increase the sustainability of new urban settlements. Each of these gentrification nodes includes two common ideas: First, an intention to achieve optimum climate comfort mainly related to their orientation and the height-to-width ratios, especially in the case of 5A in New Cairo and Arkan Plaza in Zayed. Second, the use of Bio Geometry that \"uses proprietary shapes, which interact with the peripheral energy fields of the body, to amplify the presence of this highly beneficial BG3 energy-quality, as well as to harmonize energy interactions with the environment\" [30] which is mainly related to spatial analyses. As key properties, these complexes are of particular relevance for reorientating the market value and the spatial structure of the new settlement [4]. The type of gentrification node affects its spatial organization, especially the large-scale retail properties. Clearly, the projects were designed from the beginning as a business park with multi-services and large-scale retail areas such as 5A and Arkan Plaza, and the residential gated communities where retail properties were added later as the case of WaterWay White in new Cairo. The information in Table 1, concerning the targeted customers at the time of the creation of the chosen gentrification node and in the time being, was conducted on the basis of feedback from the architect and the owners of these nodes. Gentrification Node 1: Waterway 1  
\"Waterway 1\" is a residential gated compound constructed in 2012; it lies at the north-eastern part of Cairo, 30\({}^{\circ}\)2\({}^{\prime}\)29.32\({}^{\prime\prime}\) N, 31\({}^{\circ}\)28\({}^{\prime}\)32.37\({}^{\prime\prime}\) E, at Mohamed Najeeb axis in New Cairo (see Figure 3). The compound's design offers the property owners vast green open spaces and water features. Additionally, a commercial strip linked to the compound offers an array of recreational services and amenities, which include bank branches, supermarkets, sports facilities, restaurants, and cafeterias (see Figure 4). According to the owner and the architect, the design's approach targets upper to upper-middle social classes who wish to live in high-end apartments. The compound has a high property value and offers different services and activities. However, due to social mobility and the market pattern, the commercial strip amenities targeted mainly the upper middle social class. Figure 3: The selected gentrification nodes for the same architect (author). Figure 4: Waterway 1: (**a**) the study location marked in red; satellite images generated by Apple maps and the design typology; (**b**,**c**) the outdoor terraces and the facade design; (author); (**d**) the linear parking lot; source, author; (**e**) 3D (author). The commercial strip is single-loaded building blocks of an average height of 12 m facing the west. Curtain wall cladding with spaced louvers are at the facade. Most restaurants and cafeterias are on the ground floor with outdoor terraces. Some terraces are enclosed glass terraces, and the others are open with portable shading elements, namely, umbrellas. These terraces are 5 m wide and overlook 2 m sidewalks and a stripped parking area.