Papers by Keyword: Geographical Information System (GIS)

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Authors: Gabriela Maria Atanasiu, Florin Leon, Bogdan F. Popa, Cornel Doniga
Abstract: This paper deals with the monitoring and assessment of structural performance of reinforced concrete residential buildings damaged during the lifetime by several important natural disasters such as earthquakes. The problem belongs to the risk management of built environment areas subjected to various natural catastrophes. In our work, we present a methodology based on modeling, simulation and nonlinear analysis applied on two classes of existing buildings located in the damaged infrastructure of earthquake sensitive cities. The decisions for risk mitigation taking into account the real seismic vulnerability of structures are based on GIS (Geographical Information Systems) mapping, and application of some artificial intelligence techniques. Finally, our paper discusses a new methodology for awareness and mitigation of seismic effects in case of future events in dense urban areas based on a case study for Iasi city, Romania.
Authors: Bai Chao Wu, Ai Ping Tang, Lian Fa Wang
Abstract: The foundation of delaunay triangulation and constrained delaunay triangulation is the basis of three dimensional geographical information system which is one of hot issues of the contemporary era; moreover it is widely applied in finite element methods, terrain modeling and object reconstruction, euclidean minimum spanning tree and other applications. An algorithm for generating constrained delaunay triangulation in two dimensional planes is presented. The algorithm permits constrained edges and polygons (possibly with holes) to be specified in the triangulations, and describes some data structures related to constrained edges and polygons. In order to maintain the delaunay criterion largely,some new incremental points are added onto the constrained ones. After the data set is preprocessed, the foundation of constrained delaunay triangulation is showed as follows: firstly, the constrained edges and polygons generate initial triangulations,then the remained points completes the triangulation . Some pseudo-codes involved in the algorithm are provided. Finally, some conclusions and further studies are given.
Authors: Li Na Lan, Xue Rong Gou, Yun Han Xie, Meng Wu
Abstract: In mobile network, cell coverage analyses are vital to network optimization. The traditional check method is road testing by manpower which costs much time and resources. This paper presents a multiple factors analysis method of cell coverage, and designs the relevant system based on GIS platform. Based on a huge number of mobile measure data in OMC, this method derives a cell coverage analysis chart and identification of the problem cells by analyzing multiple factors such as signal level distribution, sample point distribution, category of interferences, neighborhood relationship, and azimuth ward and so on. The calculation and analysis results are presented in map based on GIS platform. This method and system are validated by a large number of actual datasets from an in-service GSM network.
Authors: Sujit Ray, Shefalika Ghosh Samaddar, Pankaj Keserwani
Abstract: Determination of potential Geographical Indication (GI) is a necessity for timely protection of intellectual property of geographical characteristics. The process of determination and its subsequent filling for registration of GI remains manual in most of the developing and least developed nations. The manual process hinders the faster protection mechanism of GIS in a way that encourages bio-piracy. The problem can be solved successfully if the process of determination is fully automated and subsequent filling process is semi-automated (as the nature of information at this stage is mostly semi-structured and unstructured). The process of automation of determining potential GIs require a GIS based decision support system backed up by a distributed database of potential GIs. This paper explores a DSS methodology in the form of an efficient architecture which could be used for potential geographical indication (GI) determination in India. GI is a name or sign used on certain products that have a specific geographical origin and possess qualities, reputation or characteristics that is essentially attributable to that place of origin. More than 5000 cases/items are considered having potential for acquiring geographical indications, other than 223 already registered ones. The paper evolves round a DSS mechanism implemented through a Geographical Information System. The geographical region under consideration is India. However, with the change of database and rule base of DSS, the system can be employed for any country/region. The system design would get its virtual run through a web portal where the end user/consumer/applicant may get to fill the requisite details as demanded in GI application form. The system will accordingly classify it into one of the 34 classes as prescribed in GI Act, 1999 [1]. The norms for checking the potential are based on the provisions of being a GI such as GI must satisfy the condition of newness as claimed by the association or authority of manufactures/growers of the product having strong geographical flavour of the place where it has been originated/manufactured. Prior registration of GI puts to an end to uniqueness. The sign/word indicating GI must not work against public morality of the Nation. The criteria are checked for declaring a potential GI in GIS. The GIS also generates the skeleton application to be submitted after due manual scrutiny/modification/ editing/addition. The web portal provides a number of services for GI and a user can check potential of getting a GI before entering into time, money and effort consuming process of GI application. The database for such purpose is updated periodically from the application database of GI from IPAB or GI application database of IP India, Chennai. The other database for potential GI is maintained indigenously by GIS web portal. The legal validity of GI will be checked by an expert system that works in conjunction with the knowledge base obtained from the registered database as well as periodical updating of application data base. An architectural diagram represents the total methodology of the project. A test case dry run for a potential GI has been worked out in this paper to show the viability of the methodology for a potential GI candidate, namely “Komal Chaul”. The designed DSS methodology will provide a cost effective way for GI registration through GIS web portal.
Authors: Tie Dong Liu, Wen Feng Gong, Wei Hong Wang
Abstract: This paper, based on the forest map of Mao’er Mountain in 1983 and forest inventory sub-compartment database of Mao’er Mountain in 2004, and with the support of geographical information system (GIS), presents the results of study of forest resource change in the periods, which reflected the change of forest type spatial distribution. Furthermore, this study focuses on the construction and present situation of dynamic forest resource by overlaying the forest resource distribution with DEM in which the vectorization of topographical maps was made by using the vector data for creating the digital elevation model (DEM). The results demonstrate that the area of study region decreased to 216 hm2; and the area of open forest land, new afforestation, non-standing forest, farmland and wetland were decreased; the area of forest land, rivers and lakes, agricultural land and the road land are increasing. Meanwhile, it also indicts that the construction of forest resources was not reasonable, in which the proportions of midlife and near-mature forest are larger, the stocks of midlife and near-mature forest increases, and the stock of mature forest decreased greatly. Finally, the study focuses on the forest resource spatial distribution by overlay analysis combined DEM with forest resources construction, which aimed to adjust the current unreasonable situation for the sustainable management of forest resources in the future.
Authors: Hong Wen Xu, Qi Zhi Zhang, Xin Chuan Li
Abstract: Urban underground pipeline was an important part of urban public infrastructure, and it was lifeline of cities. Application research of urban underground pipeline management information system also was important to urban underground pipeline manager, and we could manage underground pipeline efficiently when we depended on 3D technology. The paper introduced data model of pipeline network, and introduced how to establish basic 3D objects class of urban underground pipeline management information system. We realized the 3D underground pipeline network and completed the query and network analysis of underground pipeline. Finally the paper provided a preview and conclusion of underground pipeline management information system.
Authors: Rui Li, He Bing, Jing Hua Song
Abstract: A comparative method for studying road network based on GIS will be proposed in this paper, in which Axwoman is involved as an ArcView extension for urban morphological analysis. Finally, the case of Nanyang city is applied to show the expansion of road network in 1984, 1996 and 2008, by comparing the changes of global integration value, local integration value and connectivity value of whole city, special roads and different sub-areas respectively.
Authors: Yang Zhou, Lei Yang, Yuan Bao Leng
Abstract: This paper introduced the working principle of 3-D laser scanning technology, analyzed the feasibility of monitoring changes in topography based on the technology, designed the method to monitor the change of terrain, achieved the terrain deformation monitor system by the using of GIS technology, carried out the practical application of terrain deformation monitoring tests, and with the comparison with traditional deformation monitoring method. Terrain deformation monitor system based on 3-D laser scanning technology can quickly and efficiently got many kinds of results. The research presented a new, practical approach for terrain deformation monitor. The method can also be applied in the fields of terrain analysis, disaster prevention and mitigation, disaster assessment, soil erosion and mine production estimates and so on.
Authors: Shi Gun Jing, Fa Ben Li, Xin Ma
Abstract: Using GIS(Geographic Information System), GPS(Global Positioning System), and GPRS(General Packet Radio Service), an digital mining control management system in an open pit has been designed and developed. A linear programming model is set up in a practical application. By the model, the system can automatically draw up production plan of ore blending well every day. The system can monitor and dispatch open-pit trucks and shovels well, and can play back their historical paths. It can monitor and control the process of mining production in real time. The system can also count the number of trucks’ delivery and shovels’ loading automatically. Experiments on real scenes show that the performance of this system is stable and can satisfy production standards of ore blending in open pits.
Authors: Katalin Gruiz, E. Vaszita, Z. Siki, Viktória Feigl
Abstract: An Environmental Risk Management methodology was developed for the Toka catchment area, an abandoned base metal mining site in Gyöngyösoroszi, Hungary. The postmining activities on the Hungarian site require the management of both the point and diffuse sources. The mobile Cd and Zn content of the mine waste, soil and sediment transported by water pose the highest environmental risk in the area. The approach is „GIS based” (Geographical Information System) and „catchment scale”, using a three tiered, iterative Environmental Risk Assessment methodology. The model parameters of the metal transport were determined in leaching microcosms. The risk reduction concept aims at reducing the runoff water quantity and contamination by removal of the point sources and chemical & phytostabilisation of the residual and diffuse pollution. The planning of the field application was based on the results of the stabilisation microcosms.
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