Digital Elevation Model (DEM) errors tend to be spatially correlated, inevitably affecting DEM-based topographic change detection. Traditional detection methods often ignore the spatial distribution of DEM error. This paper aims develop a workflow that considers autocorrelation error in Firstly, Difference (DoD) is obtained from two-period DEMs, and Monte Carlo method employed evaluate Spatially Distributed Errors (SDE) DEMs. Secondly, DoD are calculated by propagation based on distributed...

A novel approach is introduced for the detection of location and direction traffic congestion using GPS data from taxis. This uses a dynamic model that conceptualizes events, processes, states. The states are locations taxis, processes motion events congestion. implemented as graph database, which represents relationships between states, things (such points interest road grid). Algorithms constructing updating taxi behaviors retrieval method in Neo4j presented used to demonstrate...

ABSTRACT Current geographic knowledge graph research mainly focuses on static coupling through analysis of web text and maps, but its expression model fails to incorporate mechanisms such as process evolution interactions. The geo‐scene is a synthesis various elements which prescribes spatial, temporal, semantic, attribute, interrelationships. It has demonstrated utility in facilitating geocomputation, spatiotemporal simulation reasoning related geo‐process. Therefore, developing...

Traditional geographic information system models for map representation use superposition of layers to model physical reality, neglecting the integrity environment and limiting ability express interactions between features in complex phenomenon. This results limitations regarding dynamic simulation causality reasoning. In this paper, we extend framework scene by formalizing relationship processes events construct a data model: process-event-centred model. The key element is relationships...

The No.4 tailings pond of the Dexing Copper Mine is second largest in Asia. tailing a dangerous source man-made debris flow with high potential energy. In view lack effective and low-cost global safety monitoring means this region, paper, time-series InSAR technology innovatively introduced to monitor deformation dam significant key findings are obtained. First, surface information its surrounding areas was extracted by using SBAS-InSAR Sentinel-1A data. Second, cause explored analyzing...

Panax Notoginseng is a widely recognized medicinal herb in Chinese traditional medicine. Investigating the cultivation of P. notoginseng crucial for ecological preservation and effective land management. In our study, we conducted an analysis spectral properties plantations along with various other cover types. As result, have introduced novel index called Signed Normalized Range Index (SNRI), based on maximum minimum reflectance values across all bands multispectral imagery. Through...

Fuzziness is an inherent property of geographical phenomena and the processes data acquisition, processing, analysis often introduce uncertainty. Existing methods predominantly use fuzzy set (FS) theory to capture fuzziness as spatial objects. However, this approach has a conceptual confusion regarding fuzziness, uncertainty, vagueness, membership degree expressed using accurate values that ignore Furthermore, FS-based lack vague temporal descriptor. Herein, vague-spatiotemporal-object model...

Mountain cities are characterized by undulating terrain, complex road networks, and diverse facilities, which makes accessing food more difficult than in with a flat terrain. This study proposes an enhanced two-step method based on the Baidu map service for construction of supermarket–market–retail sales architecture calculating accessibility. The accessibility indices seven major categories (grains oils, fruits, vegetables, seafood, meat, milk, eggs) were calculated considering principle...

Traditional shadow suppression method based on HSV color space was proved to be an effective method. However, detection with fixed parameters does not meet the change of monitored scene. According vehicle property and scene by projection, this article proposed adaptive algorithm achieve proposes without adjusts threshold manually. Experiment result shows that, in process monitoring tracking highway, can adaptively suppress condition change.

Abstract Citizen science-based data collection approaches offer new opportunities to produce high-quality rainfall products. One of the most promising options, personal rain gauges (PRGs), allows for high spatial and temporal resolution observation has received much attention in recent years. Doubts about accuracy stability PRGs, however, have led many researchers remain hesitant using PRG-based datasets. It is, therefore, great importance investigate effectiveness PRG network. In this...

Oblique photography is a regional digital surface model generation technique that can be widely used for building 3D construction. However, due to the lack of geometric and semantic information about building, these models make it difficult differentiate more detailed components in such as roofs balconies. This paper proposes deep learning-based method (U-NET) constructing low-rise buildings address issues. The ensures complete conforms LOD2 level. First, orthophotos are perform extraction...

<title>Abstract</title> Geological hazard vulnerability assessment plays a crucial role in disaster prevention and mitigation strategies. However, current methodologies often prioritize identifying high areas, neglecting regional level assessment. Addressing the ambiguity uncertainty inherent this process is essential for enhancing accuracy. This study focuses on Zhejiang Province, employing an index system of exposure, sensitivity, coping capacity Utilizing combination weights based game...

Unstructured geo-text annotations volunteered by users of web map services enrich the basic geographic data. However, irrelevant geo-texts can be added to map, and these reduce utility users. Therefore, this study proposes a method detect uncorrelated based on Voronoi k-order neighborhood partition auto-correlation statistical models. On basis classification semantic vector transformation, quantitative description for spatial autocorrelation was established weighting inverse vicinity...

Abstract At present, numerical models of 2D tidal current and oil spill have been widely used in simulating the diffusion spread spilled oil. Thus, this paper adopts MIKE21_FM hydrodynamic model, establishes a dynamic model based on unstructured meshes Liuheng Island Zhoushan city. After verification by measured data, it can be found that reflect characteristics perfectly, provide sufficient conditions for simulation spill. Based that, MIKE21/3 OS is applied predicting risk Accordingly, 8...

Abstract. The Geographic scene is a conceptual model that provides holistic representation of the environment. This has been developed in order to overcome limitations geographic information systems (GIS) concerning interactions between features and dynamics. contribution translates theoretical into an implementation dynamic data graph database Neo4j applies it GIS representing typhoon. specific focus on choices made process generation example potential queries supports.

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Huang, Y.; Sheng, Y.H.; Min, X.Q.; He, Y.F., and Chen, P., 2020. Numeric simulation of suspended sediment transportation during dredging harbor basin. In: Guido Aldana, P.A. Kantamaneni, K. (eds.), Advances in Water Resources, Coastal Management, Marine Science Technology. Journal Research, Special Issue No. 104, pp. 276–280. Coconut Creek (Florida), ISSN 0749-0208.Maintaining the safe water depth basin is important to ensure safety ships, while major method accomplish this task. However,...

In most of traditional raster-based algorithms for Voronoi diagram, terrain was less considered, so these are difficult to describe the generating process which is affected by terrain. An Inflation Prototype with Terrain Constraints (IPTC) proposed. The core prototype what extracts factors that restrict or promote generation, and combines instance convert effect into a value time-consumption expresses how long each pixel needs inflate. accordance inflation pattern 8-neighborhoods, calculate...

Geographic processes are dynamic, wherein geographical entities and phenomena change over time characterized by vagueness. However, most studies on geographic employ precise expression methods to describe express the changing trajectories of phenomena, ignoring This strategy fails facilitate objective description entire process may affect analysis results. Herein, a feature model vague is established based interval type-2 fuzzy set theory characteristics comprising three stages that reflect...