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2022 1

2007 1

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happiness 2

biological economy 1

central urban area 1

megacity 1

multivariate data 1

positive view of happiness 1

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To Hold the Economical Time of Biology，to Practicea Positive View of Happiness

Gan Ziheng

Strategic Study of CAE 2007, Volume 9, Issue 2, Pages 5-11

Abstract: , classification and characteristic of biological economy, also, the importance of positive view of happinessin a biological economy condition and the reason for emphasizing people's happiness achieving,andthe definition of happiness philosophy.It also discusses which views of happiness should be recommended and how to practice a positive viewof happiness in the scientific and technological circle in China.

Keywords： biological economy happiness positive view of happiness

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Reasonable Scale of Megacity Central Area Based on Multivariate Data and a Traffic Perspective

Lu Huapu, Bai Zhuotong,Wu Zhouhao, Fu Zhihuan

Strategic Study of CAE 2022, Volume 24, Issue 6, Pages 146-153 doi: 10.15302/J-SSCAE-2022.06.013

Abstract:

The central area of a megacity, which features high-intensity development, large population density, and concentrated urban functions, demonstrates the most prominent urban problems. Addressing the urban malaise in megacities necessitates analyzing and demonstrating the reasonable scale of the megacity central area. This study proposes that commuting time is the core controlling factor determining the reasonable scale of the megacity central area. Combining with point of interest data of multi-type land use and the geographic information system data for street administrative division, we identified the current central urban areas of ten cities in China using big data analysis and the clustering method; their current traffic efficiencies were then evaluated based on path navigation data via web maps and mobile phone signaling data verification. Finally, demonstration results were presented through quantitative analysis. Our study shows that the current central areas of the ten megacities cannot satisfy residents' need for a proper commuting time; considering factors such as technological development and improvement in the level of governance, 13‒15 km is the upper limit of equivalent radius for the central area of a megacity.

Keywords： reasonable scale multivariate data central urban area megacity happiness