This report addresses the problem of extracting topographic features from Shuttle Radar Topography Mission (SRTM) imagery. The features are used for Earth science applications and include slope, curvature, aspect, flow direction, flow accumulation and compound topographic index (CTI). The objective of our work is (1) to support topographic feature extraction similar to the one in ArcGIS, (2) to...

Changing and reconstructing the ecological space of urban agglomerations is inevitable for conservation a scientific problem that needs urgent attention from geography, ecology, rural planning. Using ArcGIS other software data processing, this study established spatial attribute database, constructed land use conversion matrix Changsha-Zhuzhou-Xiangtan (CZX) agglomeration’s space, quantitativel...

In recent years, there have been many studies on regional geological hazard risk assessment. However, most previous research focused natural disasters such as landslides and debris flows. There were few special aimed at highway slopes influenced deeply by artificial factors. According to the characteristics of slope, based evaluation influencing factors, factors engineering information an indiv...

Interchange location problem is a that depends on different criteria such as population density of the region, transportation facilities, infrastructure services, integration modes used in region. One important points to be taken into consideration choice idle areas Istanbul Metropolitan Municipality has foreseen. A solution approach includes Geographic Information Systems (GIS) method been pro...

To study the deformation characteristics of reverse slope, this paper took slope Xiaodongcao as research object, applied Louvain community detection algorithm, considered influence reservoir water level change, and partitioned characteristics. The characteristic zoning result was superimposed with displacement cloud map three types geological geometric factor obtained by ArcGIS. results show th...

The Great Barrier Reef Marine Park was established to provide for conservation and ecologically sustainable multiple use of 344,400 km2 of a large marine ecosystem. Management is based on multiple use, with zoning as a fundamental component of marine spatial planning. The legislative framework, including a specific Act and Regulations, address the objectives of ecosystembased, integrated manage...

Cursive script has many ambiguities. Feature extraction, by locating some specific characteristics of a writing sample in isolation or in combination with other features, can minimise the effect of these ambiguities. There are many features that can be extracted from any given sample. Information about the expected vertical letter position within the word, the zoning information, is envisaged t...

The observations of hour-glass sector zoning from four selected clinopyroxenes in undersaturated lavas best fit a model in which the sector zoning is formed due to a structural requirement in a growth direction normal to {IOO} where a high concentration of silicate units, required to build the silicate chains, is unsatisfied. In these sectors AI substitutes for Si, the charge balance being main...

Urban planners and ecologists have long debated the relationship between the structure of urban landscapes and social activities. There have, however, been very few discussions as to whether any such relationships might depend on the scales of observation. This work applies a hierarchical zoning technique to data from the city of Quito, Ecuador, to examine how relationships between typical spat...