Civil administration departments require reliable measures of accessibility so that residential care facility shortage areas can be accurately identified. Building on previous research, this paper proposes an enhanced variable two-step floating catchment area (EV2SFCA) method determines sizes by dynamically summing the population around until facility-to-population ratio (FPR) is less than FPR threshold (FPRT). To minimize errors from supply and demand catchments being mismatched, must both...

The spatial distribution of urban service facilities is largely constrained by the road network. In this study, network point pattern analysis and correlation were used to analyze relationship between healthcare facility distribution. weighted kernel density estimation method proposed in study identifies significant differences outside inside areas Ming city wall. results K-function show that private hospitals are more evenly distributed than public hospitals, pharmacy stores tend cluster...

While great progress in the development of a methodological approach to measure accessibility healthcare services has been made, exclusion complex multi-mode travel behavior urban residents and rough calculation costs from origin destination limit its potential for making detailed assessment, especially areas. In this paper, we aim describe implement an enhanced method that enables integration multiple transportation modes into two-step floating catchment area (2SFCA) estimate accessibility....

Flood disasters from dam breaks cause serious loss of human life and immense damage to infrastructure economic stability. The application Geographic Information System technology integrated with hydrological modeling for mapping flood-inundated areas depth can play a momentous role in further minimizing the risk possible damage. In present study, base terrain data, engineering data were using MIKE-21 dam-break model analyze flood routing under most scenarios. A deterministic approach was...

With the development of service industry and cultural industry, urban leisure entertainment services have become an important symbol city driving force economic social development. Karaoke, a typical form entertainment, is immensely popular throughout China, number karaoke bars expected to keep growing in future. However, little known about their spatial distribution space association with other location-specific factors. Based on geospatial entity data business statistics data, we...

Landslides are the most frequent type of natural disaster, and they bring about large-scale damage a threat to human lives infrastructure; therefore, ability conduct real-time monitoring early warning is important. In this study, Web3DGIS (Web3D geographic information systems) system for forecasting landslides was developed using Danjiangkou Reservoir area as case study. The development technique involved construction, functional design, organizing managing multi-source spatial data,...

With the increasing number of vehicles in large- and medium-sized cities challenges urban traffic management, control, road planning are being faced. Taxi GPS trajectory data is a novel source that can be used to study potential dynamic characteristics roads, thus identify locations show notable lack planning. Considering on their own insufficient for comprehensive understanding traffic, we develop characteristic time series clustering model analyze relationship between grade based existing...

Background Achieving a higher level of accessibility and equity to community healthcare services has become major concern for health service delivery from the perspectives planners policy makers in China. Methods In this study, we introduced comprehensive door-to-door (D2D) model, integrating it with open OD API results precise computation hospitals over different transport modes. For D2D public transit mode, computed temporal variation standard deviation at times day. Additionally, values...

In order to improve the accuracy and stability of industrial fault detection diagnosis, this paper introduces deep learning theory proposes an improved Deep Belief Networks (DBNs). first, "centering trick" in pre-training process network. This method is done by subtracting offset values from visible hidden variables. Then, network fine-tuning, weights are added White Gaussian Noise. combines with Kernel Principal Component Analysis (KPCA) into KPCA-CDBNs model. applies model research...

Flood damage assessment is an important part of assessing flood control in hydraulic engineering, risk mapping, and insurance claims. How to assess scientifically accurately has been the emphasis difficulty disaster research. This article describes present research status loss assessments from three aspects: classification, indicator system damage, method explores current problems scale assessment, determination rate hazard-affected bodies, as well other aspects approach loss. In end,...

The paper, mainly based on spatial data of monomer Internet bar in China's mainland, found support from technologies GIS's strong analysis and probed into the distribution rules bars particularly major cities provinces East, Middle West or those national, provincial city scale. paper was focused studies two aspects: 1. To describe overall characteristics distributed typically model provinces; 2. make quantitative concentration features all over country by using modeling methods: method...

The proportion of electric vehicles in vehicle manufacturing is increasing, but with the endurance mileage battery improved, collision safety problem becoming more prominent. To solve a multi-objective robust design discrete variables for design, we propose Grey-Taguchi optimization method. method transforms functions into single grey relation grade sequence instead signal-noises ratio used Taguchi and selects optimal combination predicted by minimum experimental analysis means. For...