Physical activity (PA) promotes healthy life and contributes to sustainable development. In this paper, we rely on the Utah Household Travel Survey data and analyze the determinants of PA in terms of neighborhood land use, accessibility to transportation, and socio-demographic status in Salt Lake County, Utah, United States using four-component walkability indices at various geographic scales. We find that PA is associated with neighborhood land use and social demographic status, including the compact design of the neighborhood. The results also indicate that land use mix is insignificant, and that current neighborhood design only supports people’s 20-min walk. The spatial lag model reveals significant spatial autocorrelation of PA but the barely improved R² validates the dominant effect of neighborhood land use and social demographic status on people’s walking behavior.

This paper studies the relationships between network capabilities and innovation development in the context of two types of innovation networks: scientific knowledge networks (SKN) and technological knowledge networks (TKN). Focusing on two types of network capabilities, namely acquisition capability and control capability, the paper uses spatial regime models to compare the impacts of multiple factors on different spatial regimes. The main conclusions are the following. First, as regards SKN, the political-administrative hierarchy has shaped the spatial evolution of acquisition capacity, forming a pattern consisting of three dominant cities (Beijing, Shanghai, Nanjing), three subsidiary cities (Guangzhou, Hangzhou, Wuhan), and multiple lesser centers (Tianjin, Chengdu, Xi’an). Moreover, high control capability cities are mainly clustered in the coastal areas, specifically, one monocentric city (Beijing) and two polycentric metropolises (Shanghai, Wuhan). Second, for TKN, cities with high acquisition and control also are mainly found in coastal areas, with Shanghai and Beijing dominating network capabilities. The model’s analysis confirms the positive effect of network capabilities on innovation development, especially in scientific knowledge networks, and the driver for regional innovation development appears to have shifted from global pipeline (globalization) to local buzz (localized talents). This paper concludes with suggestions regarding network capabilities’ potential to reduce regional inequality and achieve sustainable development of regional economies.

Walking increases physical activity and reduces obesity. Walking behavior is influenced by many different factors, including urban safety. This article studies origin and destination choices of walking behavior in Salt Lake City using GIS and statistical analyzes.We find that the origins, and destinations are influenced by different neighborhood environmental factors. Street connectivity and public parks increase the number of destinations, but have little impact on the number of origins. The number of origins increases in commercial areas with compact design. In terms of safety, we find that walking behavior is influenced by robbery events rather than traffic accidents. Furthermore, a geographical weighted regression model suggests that bus stops and population density have strong positive effects in high-density areas such as the downtown areas. Our study suggests that the current analytical framework on walkability is more suitable to explain the spatial distribution of walking trip destinations than the origins.