講座題目：Urban Spatial Scaling: From activepopulation to folding cities

主講人簡介：

李睿琪，北京化工大學(xué)信息科學(xué)與技術(shù)學(xué)院副教授，城市網(wǎng)絡(luò)實(shí)驗(yàn)室主任，北京師范大學(xué)系統(tǒng)科學(xué)博士，博士期間在麻省理工學(xué)院與波士頓大學(xué)進(jìn)行聯(lián)合培養(yǎng)。主要研究方向?yàn)槌鞘写髷?shù)據(jù)分析與建模、復(fù)雜網(wǎng)絡(luò)研究與流行病傳播動力學(xué)。目前發(fā)表SCI論文近二十篇，引用270余次，相應(yīng)工作發(fā)表在《自然》子刊Nature Communications、Scientific Reports、IEEE Access、Journal of Cleaner Productions、Computer, Environment and Urban Systems、Sensors、PLoS One、Physica A等SCI與SSCI期刊。目前是復(fù)雜性科學(xué)研究會會員，Scientific Reports、Habitat International、Cities、IEEE Access、The WebConf (former WWW)、IEEE VIS、Conference on Systems Science (CCS)、PLoS One、Physica A、IJMPC、TRB/TRR、Journal of Systems Science andComplexity等多個SCI、SSCI期刊與重要學(xué)術(shù)會議的審稿人或程序委員會成員。

講座內(nèi)容簡介：

With data from various sources, we are able to bettersense the activities of residents and the pulse of the whole city. Based oncell phone data and proper algorithms, we can get accurate trajectories ofindividuals, reveal the connection between house price and air pollutionexposure of residents, and get active population (AP) distribution as well asthe OD matrix of the city. By considering the travel demand together withfeatures of the road network, we propose an indicator named population-weightedefficiency (PWE) which can give a more comprehensive and systematic evaluationof the efficiency of the transportation network, and detect 3 typical types ofinefficient routes. In China, surrounding working units, residential area,universities, governments with walls (i.e., compounds or “big yard”) are quitecommon and unique, which is designed to an independent ecosystem, but nowadayscan cause inefficiency of the city, and inconvenience to residents, and mayhave some other profound effects. And from a dynamical and interactiveperspective, based on the concept of AP, we come up with a simple model (1 freeparameter and 4 simple assumptions) to reproduce the spatial distributionwithin cities and explain the origins of spatial scaling within cities andscaling laws across cities at the same time. With the development ofbuilding and transportation technologies, the city sprawl itself in both 2D(fast routes) and 3D (skyscrapers) space, which is the old story we have beenhearing for decades. From a brand new perspective, such processes are actuallyfolding more space to the urban central area to further promotes humaninteractions. From such a folding cities perspective, we can better reveal thetrue structure of urban systems and change how we perceive our livingenvironment.

主持人：井帥副教授，管理科學(xué)與工程學(xué)院管理科學(xué)系系主任

時 間：2020年12月2日（周三）晚上19：00

地 點(diǎn)：騰訊會議（會議號：653800 138會議密碼：123321）

歡迎廣大師生參與！