scholarly journals Examining the Spatial Coordination between Metrorail Accessibility and Urban Spatial Form in the Context of Big Data

Land ◽  
2021 ◽  
Vol 10 (6) ◽  
pp. 580
Author(s):  
Jingming Liu ◽  
Xianhui Hou ◽  
Chuyu Xia ◽  
Xiang Kang ◽  
Yujun Zhou
Keyword(s):  
Urban Form ◽  
Time Lag ◽  
Urban Center ◽  
Spatial Form ◽  
Metro Station ◽  
Important Indicator ◽  
Spatial Coordination ◽  
Coordination Model ◽  
Transit Capacity ◽  
Four Levels

Metrorail accessibility is an important indicator that influences urban spatial form. For this article, we created a 3SFCA method to analyze the Metrorail accessibility of Shanghai covering four levels: traffic analysis zones (TAZs), stations, metrorail network, and regions. The floor area ratio (FAR) was used to reflect the urban form, and spatial coordination model was introduced to examine the spatial balance between metrorail accessibility and urban forms. Results revealed that the spatial distribution of metrorail accessibility and urban form are characterized by a monocentric spatial structure, while the values of both variables decrease gradually from urban center to suburban regions, with the regional difference being significantly greater than the other three levels. The results also indicated that the development of metrorail stations has a time lag effect on the urban spatial form, and the catchment area of a metro station shows characteristics of gradually expanding and then shrinking from city center to suburban regions. Finally, the results showed that there is a strong coordination between accessibility and urban form around metro stations, but the coordinate degree varies by regions. Thus, we concluded that station density should be increased within the fourth ring, FAR should be increased between the second and third rings, and rail transit capacity in the urban center area should be increased.

scholarly journals Exploring the Influence of Urban Form on Urban Vibrancy in Shenzhen Based on Mobile Phone Data

2018 ◽  
Vol 10 (12) ◽  
pp. 4565 ◽  
Author(s):  
Lingjun Tang ◽  
Yu Lin ◽  
Sijia Li ◽  
Sheng Li ◽  
Jingyi Li ◽  
...  
Keyword(s):  
Big Data ◽  
Mobile Phone ◽  
Urban Form ◽  
City Planning ◽  
Human Perception ◽  
Urban Morphology ◽  
Mobile Phone Data ◽  
Important Indicator ◽  
Spatial And Temporal Scales ◽  
Functional Zones

Urban vibrancy is an important indicator of the attractiveness of a city and its potential for comprehensive, healthy and sustainable development in all aspects. With the development of big data, an increasing number of datasets can be used to analyse urban vibrancy on fine spatial and temporal scales from the perspective of human perception. In this study, we applied mobile phone data as a proxy for local vibrancy in Shenzhen and constructed a comprehensive framework for the factors that influence urban vibrancy, especially in terms of urban morphology and space syntax. In addition, the popular geographically and temporally weighted regression (GTWR) method was used to explore the spatiotemporal relationships between vibrancy and its influencing factors. The spatial and temporal coefficients are presented through maps. The conclusions of this attempt to study urban vibrancy with urban big data have significant implications for helping urban planners and policy makers optimize the spatial layouts of urban functional zones and perform high-quality city planning.

A wide-spectrum coordination model of schizophrenia

2003 ◽  
Vol 26 (1) ◽  
pp. 84-85
Author(s):  
Hendrik Pieter Barendregt
Keyword(s):  
Molecular Level ◽  
Clinical Symptoms ◽  
Wide Spectrum ◽  
Cellular Level ◽  
Cognitive Level ◽  
Levels Of Abstraction ◽  
Coordination Model ◽  
Target Article ◽  
Four Levels ◽  
Important Notion

AbstractThe target article presents a model for schizophrenia extending four levels of abstraction: molecules, cells, cognition, and syndrome. An important notion in the model is that of coordination, applicable to both the level of cells and of cognition. The molecular level provides an “implementation” of the coordination at the cellular level, which in turn underlies the coordination at the cognitive level, giving rise to the clinical symptoms.

scholarly journals How Does Polycentric Urban Form Affect Urban Commuting? Quantitative Measurement Using Geographical Big Data of 100 Cities in China

2018 ◽  
Vol 10 (12) ◽  
pp. 4566 ◽  
Author(s):  
Xiaoyan Li ◽  
Yanchuan Mou ◽  
Huiying Wang ◽  
Chaohui Yin ◽  
Qingsong He
Keyword(s):  
Big Data ◽  
Urban Space ◽  
Urban Form ◽  
Policy Formulation ◽  
Spatial Form ◽  
Ct Number ◽  
Main Research ◽  
Healthy Development ◽  
High Degree ◽  
The Impact

The relationship between polycentric urban form and urban commuting has been widely debated in Western academic circles. However, qualitative and quantitative studies have not reached a unified conclusion. The evolution of urban form in China is remarkably different from that of developed Western countries. Many Chinese cities have begun using polycentric structures as their future development strategies. This study quantitatively measures whether polycentric urban form can improve commuting efficiency in China by using traditional statistics and emerging geographic big data. We use the polycentric index (PI) as the dependent variable and the congestion delay index (CDI) and mean traffic speed (MTS) as the main independent variables. Control variables include urban morphological space compactness (CT), number of private cars per thousand people (PC), number of buses per thousand (PB), urban road area per capita (PUA) and urban population density (PD). Regression models are employed to detect the relationships among the variables. The main research conclusions are as follows: (1) A high degree of PI results in low CDI and fast MTS; (2) a compact spatial form increases the impact of polycentricity on commuting efficiency; (3) maturity road infrastructure is an important measure to promote urban commuting under a polycentric urban form; and (4) the order of effect magnitude of polycentricity on MTS is PD > PC > CT > PUA > PB; on CDI, PD > PC > PB > CT > PUA. The results can be used in examining whether the current polycentric urban pattern planning in China’s cities can effectively improve commuting efficiency. They also provide a reference for the healthy development of China’s urban space and policy formulation of subsequent urban planning.

scholarly journals The Variation of Air Purification Benefit Provided by Street Tree Assemblages in Shenyang, China

2021 ◽  
Author(s):  
Jing Yao ◽  
Miao Liu ◽  
Nina Chen ◽  
Wei Chen ◽  
Xiaobo Wang ◽  
...  
Keyword(s):  
Ecosystem Services ◽  
Urban Form ◽  
Time Lag ◽  
Road Construction ◽  
Vegetation Management ◽  
Air Purification ◽  
Street Trees ◽  
Street Tree ◽  
Significant Difference ◽  
Tree Assemblages

Abstract Street tree assemblages are a widespread natural component in cities and provide a range of ecosystem services. The spatial distribution of street tree assemblages within cities, however, is not uniform. We assessed the air purification benefits provided by street trees in Shenyang, China, to examine how urban form, urban geography and drivers of vegetation management affect this ecosystem service. The i-Tree Street Model was utilized to evaluate air purification benefits provided by street trees. We analyzed the results using two indices, with values expressed in US dollars (USD, $): the per kilometer benefit (PKB) and average tree benefit (ATB). Neither index displayed a consistent trend across the human population density gradient or along the urban-suburban continuum. The district with the highest PKB and ATB is neither the oldest nor the newest one to develop, but rather the one that began to develop around 2002. We conclude that public policy is a main driver of vegetation management, especially for street trees, because street tree abundance is closely related to road construction, which, in turn, is closely tied to economic development in a region. We also discovered no significant difference in the benefit of street tree assemblages along the urban-suburban continuum. That's probably because all areas within the different beltways contain mature street trees, the time-lag effect for growth is inconsequential. We recommend that the dynamic variations of street tree assemblages over a certain time span be taken into consideration when examining the effects of urban sprawl on ecosystem services provided by street tree assemblages.

scholarly journals HARDWARE-SOFTWARE PLATFORM OF INDUSTRIAL MONITORING

2019 ◽  
pp. 20-27
Author(s):  
M. A. Bondarenko ◽  
A. V. Bondarenko ◽  
M. Z. Benenson
Keyword(s):  
3D Models ◽  
Digital Cameras ◽  
Software Platform ◽  
Complex Objects ◽  
Destructive Testing ◽  
Metro Station ◽  
Industrial Facilities ◽  
Monitoring Task ◽  
Industrial Monitoring ◽  
Four Levels

The paper describes basic requirements for a modern supervisory control and data acquisition system (SCADA), in particular  for monitoring systems of complex industrial facilities. It is known that many robotic processes require non‑destructive testing  with pattern recognition elements within a common monitoring system. On the widely used GENESIS64 SCADA example, it is considered a solution based on the hardware and software platform RT -XDC of RASTER TECHNOLOGY digital cameras,  allowing to integrate into the system of this class any set of complex sensors such as digital cameras that support standard  interfaces, built -in processing and data analysis. In addition, it is proposed the hierarchical model of complex objects monitoring and the universal way of its representation on the Moscow metro station network example, which includes four levels: the model map level, the model level, the model objects level and the level of their attributes. The considered data structure, which have to operate in solving the common monitoring task, make a choice in favor of object -oriented databases application like IPR, used in Delta Design CAD. The results were obtained during the development of experimental software that allows visualizing 3D models and displaying information about the selected object in the form of any predetermined structures.

Strategy Research on Sustainable Development of Urban Form in Western Sichuan Plain

2014 ◽  
Vol 522-524 ◽  
pp. 1632-1635
Author(s):  
Chun Yan Yang ◽  
Bo Gao ◽  
Yi Min Peng
Keyword(s):  
Sustainable Development ◽  
Development Strategy ◽  
Urban Space ◽  
Urban Form ◽  
Comparative Research ◽  
Spatial Form ◽  
Development Mode ◽  
Strategy Research ◽  
Western Sichuan ◽  
Geographical Characteristics

the paper aims to summarize a sustainable development mode that adapts to geographical characteristics through the research of urban spatial form in Western Sichuan Plain. The paper uses empirical and comparative research methods to summarize the urban spatial form in Western Sichuan Plain, and proposes three sustainable development strategies. The research conclusions can offers a reference for the study on sustainable development strategy of urban space in Western Sichuan Plain in the future.

scholarly journals Pembangunan Jalan Lingkar Utara dan Perubahan Bentuk dan Struktur Ruang Kota Magetan

2016 ◽  
Vol 12 (1) ◽  
pp. 37
Author(s):  
Dwi Cahyo Setiono
Keyword(s):  
Urban Area ◽  
Traffic Congestion ◽  
Urban Form ◽  
Urban Center ◽  
Ring Road ◽  
The Road ◽  
Road Development ◽  
Main Activity ◽  
The Relationship ◽  
Center Area

Magetan Regency Government built north-ring-road in order to alleviate traffic congestion in urban center area. However, the ring-road attracted people to utilize the surrounding area. The area utilization was estimated influencing the form and the structure of Magetan Urban Area. In this respect, this research is aimed to explain the relationship between north-ring road development and the change of form and spatial structure of Magetan Urban Area by using a quantitative approach and a descriptive method in its practice. As the result, the form of Magetan Urban area is compact-square with linear form in the several parts of the urban area. The structure of Magetan Urban Area is sectoral which characterized by the main activity in urban center and swept away following the main road. The development in the periphery area was caused by the increase of activities in urban center. However, the development did not change the urban form, but it contributed to the larger size of the urban form. The development of north-ring road only impacted to the development in the several villages surrounded the road, so it did not change the form and the structure of Magetan Urban Area directly.

scholarly journals Congestion Evaluation of Pedestrians in Metro Stations Based on Normal-Cloud Theory

2019 ◽  
Vol 9 (17) ◽  
pp. 3624 ◽  
Author(s):  
Jibiao Zhou ◽  
Yao Wu ◽  
Xinhua Mao ◽  
Shun Guo ◽  
Minjie Zhang
Keyword(s):  
Video Data ◽  
Metro Station ◽  
Crowd Management ◽  
Level Ii ◽  
Level I ◽  
Four Levels ◽  
Cloud Theory ◽  
The City ◽  
Pedestrian Crowd

This study aims at evaluating the congestion level of pedestrians in metro stations. Twelve hours (4 h × three facilities) of video data were collected in the channel, stairway, and platform in a metro station in the city of Ningbo, China. The indicator of GPC (grade of pedestrian crowd) was proposed to quantify the congestion level of pedestrians. Four levels of congestion (level I, level II, level III, and level IV) were determined based on the GPC. A normal-cloud (NC) model was proposed and calibrated for the evaluation of three facilities including channel, stairway, and platform. The evaluation results showed that the GPC of L1-L2 and L2-L1 in channel are level II and level I, respectively. The GPC of upward and downward of stairway are level III and level I. The GPC of platform is level IV. Crowd management countermeasures were proposed for the management of pedestrians in metro station.

The Analysis of Evolution of Spatial Form of Jilin City

2014 ◽  
Vol 488-489 ◽  
pp. 385-389
Author(s):  
Hong Tao Sun
Keyword(s):  
Urban Form ◽  
Cold Water ◽  
Northern China ◽  
Spatial Form ◽  
Geographical Environment ◽  
Development Direction ◽  
Urban Pattern ◽  
Relationship Of ◽  
The Relationship ◽  
Three Phases

Jilin is a major city in northern China, and the Special geographical environment and rich history and culture made a profound impact on the evolution of urban form. The urban pattern has common features as other waterfront cities in northern China, and also has its own uniqueness. With the start of analysis of evolution of urban form,this paper divides the development of Jilin City into three phases according time node,and analyzes the form evolution and its causes of each phase,as well as the relationship of the three phases. Finally,the paper presents development direction of spatial pattern of Jilin city based on analysis,and provides reference for the development for cold water cities.

Urban Form, Everyday Life, and Ideology: Support for Privatization in Three Toronto Neighbourhoods

10.1068/a3948 ◽  
2008 ◽  
Vol 40 (2) ◽  
pp. 258-282 ◽  
Author(s):  
R Alan Walks
Keyword(s):  
Urban Space ◽  
Urban Form ◽  
Public Services ◽  
The United States ◽  
Spatial Form ◽  
Daily Routines ◽  
Personal Experiences ◽  
The Right ◽  
The Relationship ◽  
The Welfare State

One of the trends marking neoliberalism and the attack on the welfare state from the right is the move toward the privatization of public services. Recent research in both the United States and Canada suggests that residents of the suburbs of large urban regions are more likely to vote for political parties on the right and to support neoliberal policies such as privatization, while the opposite is true for inner-city dwellers. However, the reasons why such a spatial division should occur have received little academic attention. This paper seeks to fill this gap in the literature by analyzing the relationship between residential location, spatial factors, and attitudes toward privatization, using survey data collected in the Toronto region. Results suggest that the way urban space influences residents' daily routines and personal experiences may then mediate their perception of the uses of public services and the efficacy of government spending, factors which are found to affect spatial disparities in support of and/or in opposition to privatization. Thus, there is some evidence that urban spatial form is important for understanding the geographic unevenness of support for neoliberalism, and thus ultimately for the production of ideology.

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