scholarly journals Urban Vitality Area Identification and Pattern Analysis from the Perspective of Time and Space Fusion

2019 ◽  
Vol 11 (15) ◽  
pp. 4032 ◽  
Author(s):  
Liu ◽  
Zhang ◽  
Long
Keyword(s):  
Land Use ◽  
Urban Space ◽  
Pattern Analysis ◽  
Temporal Distribution ◽  
Distribution Patterns ◽  
Mobile Phone Data ◽  
Spatial And Temporal Distribution ◽  
Strong Correlations ◽  
Variation Characteristics ◽  
Nanjing City

Urban vitality provides an important basis for evaluating urban development and spatial balance. In the era of big data, the quantitative analysis of urban vitality has become a research hotspot in the field of urban sustainability and planning research. However, time variation characteristics are often neglected, which leads to one-sidedness in the pattern analysis of urban vitality. In this paper, a method for extracting vitality areas and integrating spatiotemporal features clustering is proposed. The method is used to divide urban space into multiple vitality areas scientifically. The spatial and temporal distribution patterns of urban vitality areas are found, and the driving factors of various vitality patterns are analyzed by combining points of interest (POI)-based land use characteristics. To illustrate this method, this paper takes Nanjing city as an example. One week's worth of mobile phone data indicated that Nanjing has 10 and 8 vitality areas on weekdays and weekends, respectively. The spatial and temporal distribution patterns of the vitality areas and their correlation with land use were analyzed, which proved that POI density and entropy have strong correlations with urban vitality.

Delimitation of subtidal macrobenthos associations at the mouth of the Brisbane River

1976 ◽  
Vol 27 (2) ◽  
pp. 217 ◽  
Author(s):  
TS Hailstone
Keyword(s):  
Temporal Distribution ◽  
Community Analysis ◽  
Distribution Patterns ◽  
Spatial And Temporal Distribution ◽  
Hierarchical Analysis ◽  
Faunal Distribution

One hundred and fifty dredge samples of macrobenthic animals from the mouth of the Brisbane River were analysed by zonation analysis, Petersen-type community analysis, and hierarchical classificatory analysis. The methods were compared in terms of the faunal distribution patterns that they yielded. Hierarchical analysis gave the most acceptable results. Although the normal dendro- gram could be interpreted meaningfully to at least 16 sample groups, it has been interpreted to six groups here in preparation for subsequent, more detailed analyses. Spatial and temporal distribution patterns have been recognized and the consideration of the sample groupings as faunal states has been emphasized.

scholarly journals The time varying network of urban space uses in Milan

2019 ◽  
Vol 4 (1) ◽  
Author(s):  
Alba Bernini ◽  
Amadou Lamine Toure ◽  
Renato Casagrandi
Keyword(s):  
Land Use ◽  
Mobile Phone ◽  
Urban Space ◽  
Temporal Analysis ◽  
Mobile Phone Data ◽  
Natural Environments ◽  
Urban Structure ◽  
Land Uses ◽  
Population Mobility ◽  
The City

AbstractIn a metropolis, people movements design intricate patterns that change on very short temporal scales. Population mobility obviously is not random, but driven by the land uses of the city. Such an urban ecosystem can interestingly be explored by integrating the spatial analysis of land uses (through ecological indicators commonly used to characterize natural environments) with the temporal analysis of human mobility (reconstructed from anonymized mobile phone data). Considering the city of Milan (Italy) as a case study, here we aimed to identify the complex relations occurring between the land-use composition of its neighborhoods and the spatio-temporal patterns of occupation made by citizens. We generated two spatially explicit networks, one static and the other temporal, based on the analysis of land uses and mobile phone data, respectively. The comparison between the results of community detection performed on both networks revealed that neighborhoods that are similar in terms of land-use composition are not necessarily characterized by analogous temporal fluctuations of human activities. In particular, the historical concentric urban structure of Milan is still under play. Our big data driven approach to characterize urban diversity provides outcomes that could be important (i) to better understand how and when urban spaces are actually used, and (ii) to allow policy makers improving strategic development plans that account for the needs of metropolis-like permanently changing cities.

A SURVEY FOR THE AMBROSIA BEETLES TRYPODENDRON LINEATUM AND GNATHOTRICHUS RETUSUS (COLEOPTERA: SCOLYTIDAE) IN A SAWMILL USING PHEROMONE-BAITED TRAPS

1985 ◽  
Vol 117 (1) ◽  
pp. 49-55 ◽  
Author(s):  
T. L. Shore ◽  
J. A. McLean
Keyword(s):  
Temporal Distribution ◽  
Distribution Patterns ◽  
Mass Trapping ◽  
Spatial And Temporal Distribution ◽  
Trypodendron Lineatum ◽  
Ambrosia Beetles ◽  
Baited Traps

AbstractThe pheromones lineatum and (+)-sulcatol were used in traps in a sawmill to survey the ambrosia beetles Trypodendron lineatum (Olivier) and Gnathotrichus retusus (LeConte) respectively. Spatial and temporal distribution patterns for both species were identified. This information can be used for the establishment of a pheromone-based mass-trapping program for ambrosia beetles. The addition of ethanol and α-pinene to traps baited with (+)-sulcatol significantly increased the catches of G. retusus.

scholarly journals Spatial and temporal distribution patterns of loadings of different phosphorous forms in Lake Dianchi

2017 ◽  
Vol 29 (1) ◽  
pp. 59-68 ◽  
Author(s):  
YU Youjin ◽  
◽  
FANG Xiangjing ◽  
WANG Shengrui ◽  
ZHANG Rui ◽  
...  
Keyword(s):  
Temporal Distribution ◽  
Distribution Patterns ◽  
Spatial And Temporal Distribution ◽  
Lake Dianchi
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