scholarly journals Comparison of Intercity Travel Network Structure during Daily Time and Holiday in China

Complexity ◽  
2021 ◽  
Vol 2021 ◽  
pp. 1-15
Author(s):  
Runze Qi ◽  
Jinghu Pan ◽  
Rong Zhang
Keyword(s):  
Spatial Analysis ◽  
Network Analysis ◽  
Structural Characteristics ◽  
Central City ◽  
Diamond Structure ◽  
Central Cities ◽  
Spring Festival ◽  
Intercity Travel ◽  
Spatial Differences ◽  
Low Degrees

Intercity travel by residents promotes the regathering and dissemination of social and economic factors. Based on big data from Tencent’s location-based service, 346 cities above the prefecture level in China were chosen as study objects, with 2018 as the study time node. To construct the intercity residents’ travel network, complex network analysis and GIS spatial analysis methods were used. Furthermore, when analyzing the structural characteristics and spatial differences of Chinese residents’ intercity travel from different time perspectives (the whole year, daily, Spring Festival travel rush, and special holidays), Gephi network analysis tools and ArcGIS spatial analysis software were used. The following are the major findings: daily and the whole year intercity travel by Chinese residents, as well as intercity travel during special holidays and the Spring Festival, all exhibit the “diamond” structure, with Beijing, Shanghai, Guangzhou-Shenzhen, and Chengdu-Chongqing at the core. The distribution of lines in and around the “diamond” is large and concentrated from the perspective of the hierarchical nature of the residents’ intercity travel network. Significant increases in high-intensity population flow lines within the “diamond” can be seen during Spring Festival travel and holidays. The number of cities involved in the inflow line is significantly greater than that involved in the outflow line, as demonstrated by the number of residents in the first point of travel, indicating that there is a difference between the central cities flowing into and out of the network. The first flow of the central city is the most visible during the Spring Festival travel period. Most cities in the resident intercity travel network have relatively low degrees of centrality, closeness centrality, and betweenness centrality, and the number of cities with large values of the three is small, and they are concentrated in the apex and interior of the “diamond” structure.

scholarly journals Pengaruh Sebaran Lokasi Minimarket terhadap Jangkauan Pelayanan Pasar Tradisional di Kecamatan Banyumanik

2013 ◽  
Vol 9 (1) ◽  
pp. 97 ◽  
Author(s):  
Pratamaningtyas Anggraini
Keyword(s):  
Spatial Analysis ◽  
Network Analysis

Jumlah usaha ritel jenis minimarket di Kota Semarang meningkat secara signifikan dalam sejak 2009hingga 2011, dan terus merambah ke daerah pinggiran kota seperti Banyumanik yang merupakan salahsatu pusat perumahan dan permukiman yang penting. Secara teoritis pilihan lokasi tujuan berbelanjamasyarakat akan di pengaruhi kedekatan lokasi ritel; dalam hal ini pasar tradisional bersaing langsungdengan usaha ritel minimarket. Penelitian ini mengkaji pengaruh sebaran lokasi usaha ritel minimarketterhadap jangkauan pelayanan pasar tradisional di Kecamatan Banyumanik melalui nearest neighbouranalysis, network analysis, serta spatial analysis. Studi ini menemukan bahwa minimarket‐minimarketcenderung berada pada jalur‐jalur transportasi utama dan tersebar mengikuti pola jalan sehinggamenciptakan area pelayanan yang berbeda jika dibandingkan dengan pasar tradisional. Analisis jugamengindikasikan bahwa jangkauan pelayanan kedua jenis fasilitas perdagangan tersebut mengalamipersinggungan. Studi ini juga menemukan bahwa jangkauan layanan minimarket berkisar antara 100hingga 500 meter, sedangkan pasar tradisional antara 500 hingga 1000 meter.Kata kunci: sebaran lokasi, fasilitas, jangkauan pelayanan

City Group Optimization

2016 ◽  
Vol 7 (3) ◽  
pp. 1-22
Author(s):  
Yijun Yang ◽  
Haibin Duan
Keyword(s):  
Optimization Algorithm ◽  
Central City ◽  
Evolutionary Process ◽  
Local Optima ◽  
Central Cities ◽  
Continuous Problems ◽  
Comparative Results ◽  
A Chain ◽  
The City ◽  
City Group

City group refers to a collection of cities. Through the development and growth, and these cities form a chain of metropolitan areas. In a city group, cities are divided into central cities and subordinate cities. Generally, central cities have greater chances to develop. However, subordinate cities may not have great chances to develop unless they are adjacent to central cities. Thus, a city is more likely to develop well if it is near a central city. In the process, the spatial distribution of cities changes all the time. Urbanologists call the above phenomena as the evolution of city groups. In this paper, the city group optimization algorithm is presented, which is based on urbanology and mimics the evolution of city groups. The robustness and evolutionary process of the proposed city group optimization algorithm are validated by testing it on 15 benchmark functions. The comparative results show that the proposed algorithm is effective for solving complexly continuous problems due to a stronger ability to escape from local optima.

How Many Urban Brownfields are Out There?: An Economic Base Contraction Analysis of 31 U.S. Cities

1998 ◽  
Vol 2 (3) ◽  
pp. 267-273 ◽  
Author(s):  
Robert A. Simons
Keyword(s):  
United States ◽  
Central City ◽  
The United States ◽  
Economic Base ◽  
Central Cities ◽  
Large Cities ◽  
Brownfield Sites ◽  
Definition Of ◽  
Restrictive Definition ◽  
Base Contraction

How many brownfield sites are there in the United States? Although numerous federal and state lists of contaminated lands are known—totaling more than 380,000 sites—there is no comprehensive estimate of unlisted or total brownfield sites. This article uses economic base contraction analysis to provide an estimate of the number and acreage of brownfield sites, by type and as a percentage of the land, in 31 large cities in the United States. This approach recognizes that brownfields are the outcome of years of decline in central-city manufacturing, trade, transportation, and residential uses. Using a moderately restrictive definition of brownfield, there are an estimated 75,000 formerly industrial brownfield sites in these U.S. central cities, on 93,000 acres. This is about 5% of the land area in these communities. Another 20,000 acres are present in these same cities in the form of residential brownfields. These findings imply that the overall number of nonresidential brownfields sites in the United States is at least 500,000 to 600,000 or more.

Discussion on Basic Modes of CBD Construction in Regional Central Cities in China – A Case Study of Chengdu

2012 ◽  
Vol 253-255 ◽  
pp. 219-228
Author(s):  
Min He ◽  
Wan Yi Zhang
Keyword(s):  
Central City ◽  
Human Environment ◽  
Central Cities ◽  
Transportation Construction ◽  
Planning Concepts ◽  
Habitat Environment ◽  
At Home

This paper starts from the analysis of CBD concept, characteristics and impact on habitat environment to study and learn successful experience of CBD at home and abroad, aims at the related basic conditions of Chengdu, a regional central city to engage in discussion about Chengdu CBD building from the development positioning, planning concepts , transportation, construction, comprehensive facilities, landscape, human environment and other aspects so as to explore a CBD building path suitable for development of regional central cities in China.

Evaluation and Statistical Analysis on the Centrality Indexes of Tourism Central City in the Central Liaoning Urban Clusters

2010 ◽  
Vol 171-172 ◽  
pp. 671-674
Author(s):  
Zhi Xin Ma ◽  
Xuan Liu
Keyword(s):  
Central City ◽  
Principal Component ◽  
Tourism Industry ◽  
Principal Component Score ◽  
Tourism Planning ◽  
Central Cities ◽  
Regional Tourism ◽  
Tourism Destinations ◽  
Tourism Economy ◽  
Score Matrix

This paper took 8 tourism central cities in central Liaoning urban clusters as an example, chose 7 indicators to analyze the centrality indexes of the tourism destinations and study the development of regional tourism industry. It firstly made a principal component analysis, then used the extracted principal components as a new integrated variable, the principal component score matrix as the new integrated variable data to make a cluster analysis through the software SPSS. From the perspective of tourism planning, the paper finally determines to establish a system of tourism central cities: Shenyang isⅠ-class tourism central city, Anshan, Fushun and Benxi are Ⅱ-class tourism central cities, Yingkou, Fuxin, Liaoyang and Tieling are Ⅲ-class tourism central cities, and provides the basis for distribution of the regional tourism economy in central Liaoning.

Upper-crustal, basement-involved folding in the East Range of the Sudbury Basin, Ontario, inferred from paleomagnetic data and spatial analysis of mafic dykes

2012 ◽  
Vol 49 (9) ◽  
pp. 1005-1017 ◽  
Author(s):  
M.D. Clark ◽  
U. Riller ◽  
W.A. Morris
Keyword(s):  
Spatial Analysis ◽  
Structural Characteristics ◽  
Paleomagnetic Data ◽  
The West ◽  
Plan View ◽  
Hinge Line ◽  
Sudbury Igneous Complex ◽  
Basement Rocks ◽  
Thickness Variations ◽  
Archean Basement

Tilting of crystalline basement rocks associated with folding strain at uppermost crustal levels is difficult to recognize if basement rocks are devoid of traceable marker planes. Here we use the spatial variation in strike of Paleoproterozoic mafic dyke segments complemented by compiled paleomagnetic data to identify tilting in Archean basement rocks associated with kilometre-scale folds of the eastern Sudbury Basin, Ontario. Spatial analysis of the strike of dyke segments is consistent with generation of the NE lobe and a newly identified anticline, referred to as the West Bay Anticline, in the layered Sudbury Igneous Complex (SIC). This anticline accounts better for the structural characteristics of the eastern Sudbury Basin than a previously proposed anticline with west-plunging hinge line. The West Bay Anticline is characterized by abrupt plan-view thickness variations in the lower SIC and curved faults displaying significant strike separations of SIC contacts. These structural characteristics are consistent with folding strain imparted to the SIC and adjacent Archean rocks during formation of the West Bay Anticline. Sublayer embayments and associated quartz diorite dykes likely served as zones of mechanical weaknesses, at which the higher-order folds localized. Unfolding magnitudes of the NE lobe based on primary paleomagnetic remanence directions are significantly smaller than inferred magnitudes that are based on the assumption that the basal SIC contact was initially planar. Thus, the basal SIC contact in the NE lobe likely had a trough-like geometry at the time of remanence acquisition. We advocate a scenario for the formation of the NE lobe, in which the trough geometry of the SIC is primary rather than a consequence of tilting prior to solidification of, and remanence acquisition in, the SIC. Finally, we caution the interpretation of photo lineaments in eroded basement terranes purely as a consequence of faulting.

Ties that Bother - Ties that Matter

2017 ◽  
Vol 133 (1) ◽  
pp. 29-45
Author(s):  
Renáta Hosnedlová
Keyword(s):  
Decision Making ◽  
Social Network ◽  
Social Network Analysis ◽  
Network Analysis ◽  
Structural Characteristics ◽  
Third Parties ◽  
Decision Making Process

The aim of this article is to show that it is necessary to consider the negative, latent and lost ties, and those with the quality “zero” when studying the formation, change and reaffirmation of residential intentions and decisions. We use the case of Ukrainian immigrants residing in Spain, where we focus on the negative ties and the effects of relational strain among third parties, applying the approach of qualitative social network analysis. We pinpoint the compositional and structural characteristics of negative ties that are significant concerning decision-making process and constructing collecting data tools.

Processes of Suburbanisation and its Effects on the Finances of Cities in West Germany: The Example of Bremen and the Surrounding Communities

1996 ◽  
Vol 14 (1) ◽  
pp. 25-37 ◽  
Author(s):  
J Pohlan
Keyword(s):  
Central City ◽  
West Germany ◽  
Fiscal Stress ◽  
Significant Shift ◽  
Municipal Finance ◽  
Socioeconomic Conditions ◽  
Lower Saxony ◽  
Central Cities ◽  
Financial Strength ◽  
Negative Effect

This paper is an analysis of the effects of suburbanisation processes on the finances of cities in West Germany, taking the metropolitan area of Bremen as an example. The main thesis is that, under the present socioeconomic conditions, the German system of public finance and public responsibilities has led to a growing gap between the financial situations of central cities and of their surrounding communities in urban agglomerations. For the purpose of describing the differences in developments in the central city of Bremen and its suburban area, the main local tax revenues, as well as some indicators of ‘fiscal stress’, and their developments between 1982 and 1992 were analysed. The empirical results verify a significant shift of economic and financial strength to the suburban belt during the period under investigation. Although since the beginning of the 1970s a severe imbalance between the development of revenue and of expenditure needs has generated a dramatic budget situation in Bremen, in the surrounding communities in Lower Saxony budgetaty situations were sound in every respect. Similar processes, which have led to a relative weakness of revenues and increasing debts, have been observed in other central cities in Germany. Obviously the negative effect of suburbanisation processes on the financial situation of the central city is not a problem specific to Bremen. Generally, the larger cities are convinced that their functions for the hinterland and the resulting burdens have not been adequately taken into account in the systems of municipal finance and fiscal equalisation.

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