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Supplemental Material, sj-pdf-1-epb-10.1177_23998083211069375 for Using mobile phone big data to discover the spatial patterns of rural migrant workers��� return to work in China���s three urban agglomerations in the post-COVID-19 era by Kai Liu, Pengjun Zhao, Dan Wan, Xiaodong Hai, Zhangyuan He, Qi yang Liu, Yonghui Qu, Xue Zhang, Kaixi Li and Ling Yu in Environment and Planning B: Urban Analytics and City Science

Supplemental Material, sj-pdf-1-epb-10.1177_23998083221078307 for Examining neighborhood effects on residents’ daily activities in central Shanghai, China: Integrating “big data” and “thick data” by Shenjing He, Chenxi Li, Yang Xiao, and Qiyang Liu in Environment and Planning B: Urban Analytics and City Science

Urban transport systems are facing seemingly irreconcilable problems.Sustainable transport policies are necessary to address this sustainability challenge. However,their effectiveness highly depends on the public attitude towards them. A method combiningboth qualitative and quantitative research was used to redefine a sustainable transport policybased on sustainability principles, and find out the key factors of public attitude towardssustainable transport policies. Furthermore, the interrelations between these factors arerevealed by using structural equation modelling. 1685 questionnaires were sent to fourrepresentative cities in Sweden: Stockholm, Göteborg, Uppsala and Karlskrona. By using thisfirst hand data, we discovered some differences between Karlskrona and these other threecities. The negative attitudes towards reducing car use and promoting public transport inKarlskrona is opposite to the positive attitudes in other cities. The acceptance of taxes, speedlimitation and parking regulation is notably different as well. The results also indicate that citycharacteristics influence public attitudes towards sustainable transport policies more thancitizens’ characteristics. The functionality of a city is the most significant factor. Moreover,the results show a high dependence on individual car use. This suggests that planners shouldnot use the experience gained from other cities without investigating actual local conditions.

Effect of sodium on the solidification process of high purity Al-12 wt% Si alloys and the epitaxial growth of Si phase from (111) Si or (100) Si substrate has been studied by means of thermal analysis, microscopy, X-ray photoelectron spectroscopy and Auger electron spectroscopy. Results show that normal modification with Na has little influence on the eutectic arrest temperature, melting point, latent heat of freeze and heat of fusion of the Al-12 wt% Si alloy, and that Na adsorbs on (111) Si and affects both nucleation and growth of the Si. Kinetic features and mechanism of the modification are discussed and it is suggested that modification of AlSi eutectic with Na is a kinetic problem rather than a thermodynamic one and the transition of growth morphology of eutectic Si from platelike to fibrous results from the effects of Na on the nucleation and growth of both Al and Si phase.

By inserting single crystal silicon seeds with (111)Si or (100)Si faces into the melt of high purity A1-22 wt% Si alloy, epitaxial growth of silicon from the seeds and the effect of modification with sodium were studied. Results show that primary silicon grows platelike epitaxially from certain sites of the surfaces of the seeds, with lateral faces of {111}Si and preferred directions of Si. It appeared that an addition of 0.6 wt% Na into the melt decreases markedly the number of epitaxial primary silicon plates from the seeds and causes primary silicon to grow more packed and thicker in lateral size, while the lateral faces and preferred directions of epitaxial primary silicon plates remain the same as in the pure alloy. After a discussion on the experimental phenomena, it is suggested that modification with sodium affects both nucleation and growth of silicon phase, whereas the TRPE mechanism still plays an important role in the growth of silicon phase when Na is present.

Analyse par spectrometrie Auger et par spectrometrie XPS de l'adsorption de Na sur Si. Influence de cette adsorption sur la formation de fibres de silicium eutectique dans l'alliage Al-22% Si. Analyse du mecanisme de modification de l'alliage par le sodium