scholarly journals Studying the distribution patterns, dynamics and influencing factors of city functional components by gradient analysis

2021 ◽  
Vol 11 (1) ◽  
Author(s):  
Shun Liu ◽  
Guofu Yang ◽  
Zhaoping Wu ◽  
Feng Mao ◽  
Zelong Qu ◽  
...  
Keyword(s):  
Spatial Distribution ◽  
Gradient Analysis ◽  
Distribution Patterns ◽  
City Size ◽  
City Centre ◽  
Rational Distribution ◽  
New Perspective ◽  
Distribution Of Components ◽  
Functional Components ◽  
The City

AbstractUnderstanding the spatial distribution characteristics and formation mechanism of urban facilities (city functional components) constitutes the basis of urban layout optimization. Currently, research on the overall distribution of the various types of city functional components is lacking. In this study, by applying the gradient analysis method common in ecology, we considered 13 types of city functional components (80,214 individuals in total) in large, medium and small Chinese cities (9 cities in total) to carry out quantitative analysis of the distribution of components along urban–rural gradients through density distribution curves. The results indicated that: (1) a higher density of city functional components near the city centre revealed an obvious aggregated distribution; (2) the spatial distribution dynamics of city functional components were related to the city size, providing a reference for the rational distribution of components in cities of different sizes; (3) the distribution of city functional components was affected by their ecosystem services. This study offers a new perspective for the application of ecological methods in the examination of the distribution of city functional components.

scholarly journals Analysis of Life Quality in a Tropical Mountain City Using a Multi-Criteria Geospatial Technique: A Case Study of Kandy City, Sri Lanka

2020 ◽  
Vol 12 (7) ◽  
pp. 2918 ◽  
Author(s):  
DMSLB Dissanayake ◽  
Takehiro Morimoto ◽  
Yuji Murayama ◽  
Manjula Ranagalage ◽  
ENC Perera
Keyword(s):  
Quality Of Life ◽  
Spatial Distribution ◽  
Sri Lanka ◽  
Distribution Pattern ◽  
Gradient Analysis ◽  
Life Quality ◽  
Spatial Distribution Pattern ◽  
City Center ◽  
The City

The blooming of urban expansion has led to the improvement of urban life, but some of the negative externalities have affected the life quality of urban dwellers, both directly and indirectly. As a result of this, research related to the quality of life has gained much attention among multidisciplinary researchers around the world. A number of attempts have been made by previous researchers to identify, assess, quantify, and map quality of life or well-being under various kinds of perspectives. The objectives of this research were to create a life quality index (LQI) and identify the spatial distribution pattern of LQI in Kandy City, Sri Lanka. Multiple factors were decomposed, a hierarchy was constructed by the multi-criteria decision making (MCDM) method, and 13 factors were selected under two main criteria—environmental and socioeconomic. Pairwise comparison matrices were created, and the weight of each factor was determined by the analytic hierarchy process (AHP). Finally, gradient analysis was employed to examine the spatial distribution pattern of LQI from the city center to the periphery. The results show that socioeconomic factors affect the quality of life more strongly than environmental factors, and the most significant factor is transportation. The highest life quality zones (26% of the total area) were distributed around the city center, while the lowest zones represented only 9% of the whole area. As shown in the gradient analysis, more than 50% of the land in the first five kilometers from the city center comes under the highest life quality zone. This research will provide guidance for the residents and respective administrative bodies to make Kandy City a livable city. It the constructed model can be applied to any geographical area by conducting necessary data calibration.

scholarly journals Frequency and spatial distribution of animal and object hoarder behavior in Curitiba, Paraná State, Brazil

2017 ◽  
Vol 33 (2) ◽  
Author(s):  
Graziela Ribeiro da Cunha ◽  
Camila Marinelli Martins ◽  
Marília de Fátima Ceccon-Valente ◽  
Liana Ludielli da Silva ◽  
Flavia Dias Martins ◽  
...  
Keyword(s):  
Spatial Distribution ◽  
Population Density ◽  
Population Distribution ◽  
Distribution Patterns ◽  
Spatial Cluster ◽  
Monthly Income ◽  
The North ◽  
Neighborhood Income ◽  
Overall Ratio ◽  
The City

Abstract: This study aimed to establish the frequency and spatial distribution of animal and object hoarding in Curitiba (Paraná State), the eighth most populous city in Brazil. All hoarding complaints received by the City Secretaries of Health, Environment and Social Assistance between September 2013 and April 2015 were collected (n = 226) and suspicious cases were individually investigated. A total of 113/226 (50%) of complaints were confirmed as hoarding cases, representing an overall ratio of 6.45 cases per 100,000 inhabitants in Curitiba, of which 48/113 (42.5%) involved object hoarders, 41/113 (36.3%) animal hoarders and 24/113 (21.2%) both animal and object hoarders. A correlation of total identified cases with neighborhood population density and all population stratums analyzed (total, gender, age) was significantly positive (p < 0.01), and with neighborhood mean monthly income (r = -0.2; p = 0.03) significantly negative. A spatial cluster of cases was found in the north of the city (OR = 8.57; p < 0.01). Hoarding cases were relatively frequent in Curitiba and were associated with population distribution patterns and inversely related to neighborhood income.

Spatial consequences of urban densification policy: Floor-to-area ratio policy in Tehran, Iran

2017 ◽  
Vol 46 (4) ◽  
pp. 626-647 ◽  
Author(s):  
Mostafa Ghadami ◽  
Peter Newman
Keyword(s):  
Spatial Structure ◽  
Hot Spot ◽  
Distribution Patterns ◽  
City Centre ◽  
Master Plan ◽  
Urban Spatial Structure ◽  
Activity Distribution ◽  
Financial Benefits ◽  
Arc Gis ◽  
The City

The purpose of this paper is to investigate the effect of the urban densification policies made after the Islamic Revolution on the urban spatial structure of Tehran as the most important metropolis in Iran. The Hot Spot approach based on the Getis Ord Local G statistical test and Arc GIS 10.2 software was employed in this study. The advantage of the Geo-statistic technique used in this study is that this model does not require the exact location of the city centre to map and determine its spatial structure. The results show that the spatial structure of Tehran was affected by the non-spatial densification policies for 30 years (until Tehran’s Master Plan in 2007). Furthermore, these policies were greatly dependent on the financial benefits from the sale of the FAR permission and fines related to the ignorance of the lawful regulations. There is a spatial imbalance between the population and activity distribution patterns in the structure of Tehran. However, the negative spatial consequences of the densification policies are declining capacity of the city centre and the inner wards in retaining the population, and growing population density in the northern outer wards of Tehran.

scholarly journals ANALYZING THE SPATIOTEMPORAL PATTERNS OF EMERGENCY MEDICAL TRAVELS FROM FCD DATA

2020 ◽  
Vol V-3-2020 ◽  
pp. 751-756
Author(s):  
W. Jiao ◽  
H. Fan ◽  
Y. Wang
Keyword(s):  
Spatial Distribution ◽  
Emergency Situation ◽  
Distribution Patterns ◽  
Fast Response ◽  
Statistical Characteristics ◽  
City Centre ◽  
Medical Visit ◽  
High Concentration ◽  
Medical Resources ◽  
Emergency Medical

Abstract. Night emergency medical service as an emergency situation usually requires fast response time. This is not only related to the accessibility of the road, but also to the spatial distribution pattern of the hospital. A reasonable spatial distribution can help reduce travel time. Based on the characteristics of hospital trips in Shanghai, this paper extracts the night emergency medical visit trajectories of Shanghai from Floating Car Data (FCD) and analyzes the general statistical characteristics, including time characteristics, travel distance, etc. Using the alpha-shape algorithm and Moran ’s I index, the spatial distribution patterns of medical facilities in Shanghai was explored. The results show that: (1) The emergency medical travels mainly occur before midnight (18:00–24:00), and the number of weekend travels is slightly less than that of working days; (2) The travel radius of most emergency travels is less than 15km, and the time consumption is less than 30 minutes; (3) In terms of spatial distribution, the medical resources in Shanghai have great regional differences and high concentration, showing a "core-edge" pattern. The medical resources decrease from city centre to the suburban area in a radial pattern. These findings are helpful for us to understand the characteristics of emergency travels in cities and identify areas where medical resources are scarce. It can provide suggestions for the decision makers in the Ministry of Health and help optimize the allocation of medical resources.

Eiffel Tower and Big Ben, or 'off the beaten track'? Centripetal demand in Airbnb

2020 ◽  
Vol 10 (2) ◽  
pp. 127-155
Author(s):  
Jeroen A. Oskam
Keyword(s):  
Spatial Distribution ◽  
Financial Performance ◽  
Business Performance ◽  
City Centre ◽  
Development Pattern ◽  
Limited Effect ◽  
European Cities ◽  
Beaten Track ◽  
The City ◽  
Visitor Numbers

Abstract In the light of the debate on the growth of visitor numbers to city destinations and the sociocultural footprint of urban tourists, the spatial distribution of urban vacation rentals is a key question: does 'sharing', as Airbnb has claimed, spread visitors to peripheral neighbourhoods and contribute to decreasing the congestion in traditional tourist hotspots? Or does it, on the contrary, worsen this congestion problem, with its consequences for the perception of tourism by residents, in traditional tourist centres? This article analyses the spatial concentration of Airbnb listings in 26 European cities in terms of a distance decay from a central point. Besides the concentration of the offer, it studies the decay of business performance according to the distance from the city centre. The study finds an exponential decay for the number of listings. There is a strong effect on financial performance and a more limited effect on rental performance. While several single city studies show that Airbnb, instead of spreading tourism to neighbourhoods, led to greater concentration, these findings show that these were not incidental excesses but a common development pattern for Airbnb. Implications are that the authenticity sought by Airbnb users is not the same as the search for an unspoilt neighbourhood life. Furthermore, it means that benevolent policies towards urban vacation rentals, aimed at spreading tourism, are based on a false assumption.

scholarly journals Analisis Sebaran Spasial Tempat Pemakaman Umum Kota Jambi

JURNAL BUANA ◽  
2019 ◽  
Vol 3 (3) ◽  
pp. 451
Author(s):  
Januarman Januarman ◽  
Ahyuni Ahyuni ◽  
Endah Purwaningsih
Keyword(s):  
Spatial Distribution ◽  
Distribution Pattern ◽  
Research Method ◽  
Field Survey ◽  
Buffer Zone ◽  
Distribution Patterns ◽  
Nearest Neighbour ◽  
Service Coverage ◽  
The City

Abstract This study aims to analyze spatial distribution of public cemetery (TPU) in Jambi City based on distribution pattern, capacity to requirement, and service coverage of Public Cemetery in Jambi City in 2017. The research method used is field survey by mapping the location of public graveyard, distribution patterns using Nearest Neighbour Analys, and counting TPU capacity and mapping the range of services. The results showed that the pattern of TPU distribution in Jambi City grouped following the pattern of community settlements that also influenced the morphological condition of Jambi City. Based on calculation of capacity with the number of needs of the grave at this time as many as 11,752 tombs and the availability of land as much as 302,634 tombs, so that the capacity of TPU in the city of Jambi currently as a whole is still able to meet the needs. Result of analysis of service range of TPU in Jambi City based on “buffer zone” result as far as 2 Km from TPU location shows that all TPU in Jambi City its service reach all community settlement. Keywords: Public Cemetery, Distribution Pattern, Capacity, and Reach of Service.

scholarly journals The Spanish spatial city size distribution

2020 ◽  
pp. 239980832094186
Author(s):  
Rafael González-Val
Keyword(s):  
Size Distribution ◽  
Pareto Distribution ◽  
City Size ◽  
Large Cities ◽  
Lognormal Distributions ◽  
City Size Distribution ◽  
Distribution Parameters ◽  
Significant Patterns ◽  
New Perspective ◽  
The City

This paper analyses the Spanish city size distribution from a new perspective, focusing on the role played by distance. Using un-truncated data from all cities in 1900 and 2011, we study the spatial distribution of cities and how the city size distribution varies with distance. First, K-densities are estimated to identify different spatial patterns depending on city size, with significant patterns of dispersion found for medium-sized and large cities. Second, using a distance-based approach that considers all possible combinations of cities within a 200-kilometre radius, we analyse the influence of distance on the city size distribution parameters, considering both the Pareto and lognormal distributions. The results validate the Pareto distribution in most of the cases regardless of city size, and the lognormal distribution at short distances.

scholarly journals The Spatial Distribution and Influencing Factors of Employment Multipliers in China’s Expanding Cities

2021 ◽  
Vol 11 (3) ◽  
pp. 1016
Author(s):  
Daquan Huang ◽  
Han He ◽  
Tao Liu
Keyword(s):  
Spatial Distribution ◽  
City Size ◽  
Major Goal ◽  
Large Cities ◽  
Employment Multiplier ◽  
Multiplier Effect ◽  
Process Of Urbanization ◽  
Trade Sector ◽  
The City ◽  
Different Levels

In the process of urbanization in developing countries, creating enough jobs to realize the transition from an agricultural population to a non-agricultural population is a major goal of development. The differences and localities of cities need to be considered in the policymaking process. This study estimated the local employment multipliers of expanding cities in China and calculated the employment multiplier of each city. First, there are obvious differences in the size of employment multipliers across cities; therefore, it is necessary to adopt different policies in employment promotion. Second, an inverted-U-shape relationship is detected between employment multiplier and city size, namely the larger the city, the greater the employment multiplier, but when the city size exceeds a certain value, the employment multiplier begins to decline. Third, different degrees of influence are generated by factors for cities at different levels of economic development. Based on the research results, we suggest that expansion of the trade sector be promoted in small- and medium-sized cities, to give full play to its employment multiplier effect; meanwhile, in large cities, the degree of specialization of the trade sector and diversification of the non-trade sector should be improved.

scholarly journals Spatial distribution in the emergence of coffee shops in Surakarta

2021 ◽  
Vol 778 (1) ◽  
pp. 012031
Author(s):  
R R Maulana ◽  
U J Cahyono ◽  
M Muqoffa
Keyword(s):  
Spatial Distribution ◽  
Spatial Analysis ◽  
Distribution Patterns ◽  
Architectural Style ◽  
Coffee Shop ◽  
Drinking Habit ◽  
Coffee Drinking ◽  
Development Structure ◽  
The City ◽  
Coffee Shops

Abstract The phenomenon of the rise of coffee-drinking has become a trend economic-cultural as globalization in lifestyle for the community in Surakarta. This coffee-drinking habit increasingly supporting the emergence of coffee shops that keep flourishing and the number continuously expand. Specifically, each coffee shop presents their own theme and display the architectural style that show its earmark of the coffee shops. It indicates that the growth of coffee shop has contributed to enrich the architecture in the city. The aim of the paper to identify spatial distribution patterns of the emergence of coffee shop in Surakarta. The research is carried out through spatial analysis, which is mapping the distribution of the coffee shops. Later, use spatial observation to find the patterns of distribution from the emergence of the coffee shop. As a result, is expected to be an outset for further research of spatial development structure as seen from the growth of coffee shop in Surakarta.

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