scholarly journals Research on the Application of GIS Technology Combined with RBFNN-GA Algorithm in the Delineation of Geological Hazard Prone Areas

2021 ◽  
Vol 2021 ◽  
pp. 1-11
Author(s):  
Tianwang Lei ◽  
Yao Lu ◽  
Chong Zhang ◽  
Jing Wang ◽  
Qi Zhou
Keyword(s):  
Statistical Analysis ◽  
Quantitative Evaluation ◽  
Rapid Development ◽  
Heterogeneous Data ◽  
Geological Hazard ◽  
Gis Technology ◽  
Unstable Zone ◽  
Geological Disasters ◽  
Time Space ◽  
Ga Algorithm

With the rapid development of the economy and society, geological disasters such as landslides, collapses, and mudslides have shown an intensifying trend, seriously endangering the safety of people’s lives and property, and affecting the sustainable development of the economy and society. Aiming at the problems of merging different data layers and determining the weighting of data stacking in the statistical analysis model based on GIS technology in the evaluation of the risk of geological disasters, this study proposes a logistic regression model combined with the RBFNN-GA algorithm, that is, the determination of the occurrence of geological disasters. The fusion coefficient (CF value) with the RBFNN-GA algorithm model, and with the help of SPSS statistical analysis software, solves the problem of factor selection, heterogeneous data merging, and weighting of each data layer in the risk assessment. In the experimental stage, this study adopts the method of geological hazard certainty coefficients to carry out the sensitivity analysis of the geological hazards in the study area. Using homogeneous grid division, the spatial quantitative evaluation of the risk of geological disasters is realized, and at the same time, the results of the spatial quantitative evaluation of the risk of geological disasters are tested according to the latest landslide points in the region. The existing classification mainly depends on the acquisition of land use/cover information or the processing method of the acquired information, but the existing information acquisition will be limited by time, space, and spectral resolution. The results show that the number of landslide points per unit area in the extremely unstable zone and the unstable zone is 0.0395 points/km2 and 0.0251 points/km2, respectively, which is much higher than 0.0038 points/km2 in the stable zone, indicating the evaluation results and actual landslide conditions.

scholarly journals Variable Selection for the Spatial Autoregressive Model with Autoregressive Disturbances

Mathematics ◽  
2021 ◽  
Vol 9 (12) ◽  
pp. 1448
Author(s):  
Xuan Liu ◽  
Jianbao Chen
Keyword(s):  
Variable Selection ◽  
Autoregressive Model ◽  
Rapid Development ◽  
Heterogeneous Data ◽  
Spatial Effect ◽  
Spatial Effects ◽  
Spatial Autoregressive Model ◽  
Monte Carlo Studies ◽  
Spatial Autoregressive ◽  
Theoretical Results

Along with the rapid development of the geographic information system, high-dimensional spatial heterogeneous data has emerged bringing theoretical and computational challenges to statistical modeling and analysis. As a result, effective dimensionality reduction and spatial effect recognition has become very important. This paper focuses on variable selection in the spatial autoregressive model with autoregressive disturbances (SARAR) which contains a more comprehensive spatial effect. The variable selection procedure is presented by using the so-called penalized quasi-likelihood approach. Under suitable regular conditions, we obtain the rate of convergence and the asymptotic normality of the estimators. The theoretical results ensure that the proposed method can effectively identify spatial effects of dependent variables, find spatial heterogeneity in error terms, reduce the dimension, and estimate unknown parameters simultaneously. Based on step-by-step transformation, a feasible iterative algorithm is developed to realize spatial effect identification, variable selection, and parameter estimation. In the setting of finite samples, Monte Carlo studies and real data analysis demonstrate that the proposed penalized method performs well and is consistent with the theoretical results.

Bibliometric analysis and critical review of the research on big data in the construction industry

2021 ◽  
Vol ahead-of-print (ahead-of-print) ◽  
Author(s):  
Yusheng Lu ◽  
Jiantong Zhang
Keyword(s):  
Big Data ◽  
Construction Industry ◽  
Bibliometric Analysis ◽  
Critical Review ◽  
Rapid Development ◽  
Heterogeneous Data ◽  
The Body ◽  
Future Research ◽  
Temporal And Spatial Distribution ◽  
Content Type

PurposeThe digital revolution and the use of big data (BD) in particular has important applications in the construction industry. In construction, massive amounts of heterogeneous data need to be analyzed to improve onsite efficiency. This article presents a systematic review and identifies future research directions, presenting valuable conclusions derived from rigorous bibliometric tools. The results of this study may provide guidelines for construction engineering and global policymaking to change the current low-efficiency of construction sites.Design/methodology/approachThis study identifies research trends from 1,253 peer-reviewed papers, using general statistics, keyword co-occurrence analysis, critical review, and qualitative-bibliometric techniques in two rounds of search.FindingsThe number of studies in this area rapidly increased from 2012 to 2020. A significant number of publications originated in the UK, China, the US, and Australia, and the smallest number from one of these countries is more than twice the largest number in the remaining countries. Keyword co-occurrence is divided into three clusters: BD application scenarios, emerging technology in BD, and BD management. Currently developing approaches in BD analytics include machine learning, data mining, and heuristic-optimization algorithms such as graph convolutional, recurrent neural networks and natural language processes (NLP). Studies have focused on safety management, energy reduction, and cost prediction. Blockchain integrated with BD is a promising means of managing construction contracts.Research limitations/implicationsThe study of BD is in a stage of rapid development, and this bibliometric analysis is only a part of the necessary practical analysis.Practical implicationsNational policies, temporal and spatial distribution, BD flow are interpreted, and the results of this may provide guidelines for policymakers. Overall, this work may develop the body of knowledge, producing a reference point and identifying future development.Originality/valueTo our knowledge, this is the first bibliometric review of BD in the construction industry. This study can also benefit construction practitioners by providing them a focused perspective of BD for emerging practices in the construction industry.

Design and Application of Urban Planning and Location System Based on GIS Technology

2017 ◽  
Vol 42 (3) ◽  
pp. 5-9
Author(s):  
Qinglin Luan ◽  
Li Zhang
Keyword(s):  
Urban Planning ◽  
Evaluation Method ◽  
Rapid Development ◽  
Gis Technology ◽  
Analysis And Design ◽  
Location System ◽  
Overall Design ◽  
Structured Analysis ◽  
Factor Evaluation ◽  
Economic Construction

Chinese cities are becoming larger and urbanization is accelerating with the rapid development of China's economic construction and formulation of planning objectives. Traditional manual management and information processing methods cannot satisfy the requirements of modern urban planning management. Thus, this study analyzes the application of geographic information system (GIS) in urban planning, starting with the characteristics of GIS technology. Structured analysis and design are conducted for urban planning and the location system. The software engineering approach is adopted throughout the entire process, from the survey to the overall design of the system and database. The evaluation factors of the pension facilities in Baohe, Hefei are extracted through the factor evaluation method, and the weight value is determined. The GIS analysis method is then used, and site suitability evaluation is performed on the Baohe district land layout. Results show that the application of urban planning and a location system based on GIS technology can provide the basis for urban planning.

scholarly journals Evolution of Regional Economic Spatial Structure Based on IoT and GIS Service

2021 ◽  
Vol 2021 ◽  
pp. 1-11
Author(s):  
Lei Jiang
Keyword(s):  
Regional Development ◽  
Spatial Information ◽  
Rapid Development ◽  
Economic Research ◽  
Gis Technology ◽  
Regional Economic ◽  
Economic Diversity ◽  
Wide Range ◽  
Distance Weighting ◽  
Inverse Distance

Unbalanced regional development is an inevitable trend in the development of all countries in the world. The rapid development of the Internet of Things (IoT) technology has created tools for the study of regional development issues. IoT has many advantages and thus owns a very wide range of applications. This paper makes use of geographic information system (GIS) technology, which can be viewed as one of the IoT sensing information. Changes in spatial regional economic differences and space and the evolution of the structure are particularly examined by processing spatial information such as maps, analyzing phenomena and events that exist on the earth, and exploiting Kriging and inverse distance weighting (IDW). The numerical results in this paper justify that the introduction of GIS technology to the study of economic diversity can upgrade regional economic research from a traditional qualitative and statistical level to a quantitative and spatial visualization level.

Analysis of the Tourism Locations of Chinese Provinces and Autonomous Regions: An Analysis Based on Cities

2014 ◽  
Vol 02 (01) ◽  
pp. 1450004
Author(s):  
Zheng WANG ◽  
Lijuan CHEN
Keyword(s):  
Information System ◽  
Statistical Analysis ◽  
Geographic Information System ◽  
Geographic Information ◽  
Gis Technology ◽  
Regional Tourism ◽  
Autonomous Regions ◽  
Relationship Of ◽  
The Relationship ◽  
Statistical Analysis Methods

Based on the data collected from cities, this paper analyzes the conditions of tourism location of provinces and autonomous regions. For the method, this paper uses Geographic Information System (GIS) technology and statistical analysis methods to try to analyze tourism geographic conditions from the relationship of tourism industrial location and Chinese arterial highway location, so as to provide a reference for the development of regional tourism.

scholarly journals Application of domestic high-resolution satellite data On Geological Hazard Monitoring in Coal Mining Areas

2018 ◽  
Vol 53 ◽  
pp. 03008
Author(s):  
Wang Jie ◽  
Wang Hao ◽  
Yao Weiling ◽  
Wang Haiqing ◽  
Li Li
Keyword(s):  
High Resolution ◽  
Coal Mining ◽  
Satellite Data ◽  
Rapid Development ◽  
Dynamic Monitoring ◽  
Geological Hazards ◽  
Geological Disasters ◽  
High Resolution Satellite Images ◽  
Ground Collapse ◽  
Th 1

Rapid development of remote sensing technology has become an important means of geological hazards monitoring. Domestic high- resolution satellite data such as TH-1, ZY-3, GF1/2 and BJ-2, because of its high quality and low price, are more and more widely used in the field of geology. However, there are still some problems in data processing and the research on domestic satellite data in coal mining geological hazards monitoring is not much. So it needs further research and application. This paper aims to establish a set of technology scheme for dynamic monitoring and analysis of geological hazards in coal mining collapse area based on domestic high-resolution satellite. We selected the Xinjiang Uygur Autonomous Region Midong District of Urumqi where geological disasters are more serious as the study area, compared and analyzed the domestic high-resolution satellite images based on the TH-1 (2014), GF-1 (2015), BJ-2 (2016). This paper identified dynamic change of geologic hazard, set up the symbol of interpretation, evaluated and explored the practicability of land disaster investigation and dynamic monitoring with domestic high-resolution satellite. Based on the dynamic monitoring with domestic high-resolution satellite data from 2014 to 2016, we found that the geological disasters such as ground collapse and ground cracks are increasing. We suggest that it should be planned first, and exploitation should be scientific. It is necessary to strengthen the restoration of governance.

Quantitation in Neuropathology

1989 ◽  
Vol 8 (1) ◽  
pp. 225-232 ◽  
Author(s):  
B. Broxup ◽  
G. Losos ◽  
G. Yipchuck
Keyword(s):  
Statistical Analysis ◽  
Quantitative Evaluation ◽  
Computer Technology ◽  
Nervous Tissue ◽  
Quantitative Methods ◽  
Tissue Preparation ◽  
Initial Screening ◽  
Tier Ii ◽  
The Future ◽  
Dose Responses

Qualitative neuropathologic evaluations are appropriate for initial screening of compounds for neurotoxicity. In the future, advances in tissue preparation and computer technology will make quantitative evaluation of some nervous tissue structures more routine. These evaluations will be used as part of tier II studies to determine dose-responses or no-effect levels. Quantitative methods can enable small but significant differences to be detected, and the data can be subjected to statistical analysis.

The Research of Urban Fundamental Geographical Information System Based on WebGIS

2012 ◽  
Vol 170-173 ◽  
pp. 2789-2793
Author(s):  
Yi Qiang Chen ◽  
Hai Ping Xiao ◽  
Wei Liu
Keyword(s):  
Information System ◽  
Information Sharing ◽  
Rapid Development ◽  
Geographical Information ◽  
The Internet ◽  
Network Technology ◽  
Gis Technology ◽  
Gis Application ◽  
The City ◽  
Constant Improvement

Along with the rapid development in the Internet network technology and the constant improvement in the GIS technology as well as the urgent demand for geographic information sharing and mutual operation application, WebGIS has become a hot issue in the field of the GIS application. WebGIS has made up for the traditional limitations of the GIS application, thus making GIS achieve the function of true information data sharing. In such case, it accelerates the process of informationalization of the city fundamental geography. Therefore, it has strong promotion and the application value.

Design and Research of Green Fields in Urban Parks Based on RS and GIS Technology

2014 ◽  
Vol 687-691 ◽  
pp. 3849-3852
Author(s):  
Yang Chen ◽  
Chan Tao
Keyword(s):  
Remote Sensing ◽  
Rapid Development ◽  
Green Building ◽  
Urban Parks ◽  
Gis Technology ◽  
Application Process ◽  
Building Research ◽  
Rs And Gis ◽  
New Ideas ◽  
Field Planning

Urban green fields planning is an important part of urban resources and the environment building, with the rapid development of remote sensing (RS) and geographic information systems (GIS) technology, urban parks and green building research are going with new ideas and methods. This paper discusses the application of RS and GIS technology direction and mode of its application process in green field planning.

scholarly journals Electronic trade in Ukraine: trends and prospects for development

2019 ◽  
Keyword(s):  
Statistical Analysis ◽  
Electronic Commerce ◽  
Rapid Development ◽  
Global Scale ◽  
Electronic Trade ◽  
Business World ◽  
Scientific Methods ◽  
Progressive Development ◽  
Theoretical Generalization ◽  
Business Entities

One of the most significant changes that the business world is experiencing now is the progressive development and implementation of electronic commerce. Taking into account the rapid development of web and Internet technologies, e-commerce is increasing volumes on a global scale and is being formed as a separate sector of the economy. Every year, from 30% to 70% of the business of all countries (regardless of their level of development) goes online. This is especially true for business entities that carry out trading activities. The subject of research in the article is the e-commerce market in Ukraine. The goal is to conduct a statistical analysis of the state of development of the electronic commerce market in Ukraine Objectives: to study the concept of "electronic commerce"; to analyze the legislative base of Ukraine in the regulation of this sphere; statistical analysis of the development trends of e-commerce in Ukraine. General scientific methods are used: classifications and theoretical generalization - to study the theoretical foundations of electronic commerce, statistical analysis - to analyze the current state of electronic commerce in Ukraine. The following results were obtained: based on the analysis of statistical data describing the development of the e-commerce market in Ukraine, the main trends in the country were identified, the strengths and weaknesses of this area, and development prospects were identified. Conclusions: the analysis of the development of e-commerce in the world proved that today this area is rapidly increasing its volume. Ukraine has become Europe's leader in the development of e-commerce. It is proved that Ukraine has the potential to expand the influence of e-commerce companies, as 35% of the population still does not use the Internet, and a large number of users prefer foreign services due to distrust of national enterprises and an imperfect legislative base.

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