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Zheng R.,Second Monitoring and Application Center
Proceedings - 2013 4th International Conference on Digital Manufacturing and Automation, ICDMA 2013 | Year: 2013

For its complexity, engineering construction schedule design is limited by various factors. Simulation-based engineering construction schedule takes critical path method network as frame and calls complex cyclic operation network simulation model enclosed in advance for its simulation nodes. Cyclic operation network simulation model takes charge of simulating stochastic duration of activity and efficiency of resources, while critical path method model performs proiect scheduling. This combination avoids the shortcomings of both models. Furthermore, geographic information system (GIS) technique is utilized to visuallze the construction processes which are otherwise difficult to be understood by static results described. Application in practical proiect verifies the feasibility and advantage of the technique. © 2013 IEEE.

Rui Z.,Second Monitoring and Application Center
Proceedings - 2011 4th International Conference on Biomedical Engineering and Informatics, BMEI 2011 | Year: 2011

The fluctuation in neon flying squid yield from 1995 to 2001 was studied using sea surface temperature (SST), chlorophyll-a (chl-a) data and statistical production data in North Pacific. The study shows that, cool water and low food abundance caused by abnormal Kuroshio caused the reduction in abundance of neon flying squid, which was worsened by excessive catch and the unawareness to local fishery grounds. © 2011 IEEE.

Zheng R.,Second Monitoring and Application Center
Proceedings - 2013 4th International Conference on Digital Manufacturing and Automation, ICDMA 2013 | Year: 2013

Geographic Information System (GIS) technology is more and more used even in the technical practice of a construction industry. In the preparatory phase of the construction, the problems of a spatial positioning (location) of the construction have to be solved jointly with the checking of the feasibility and purposefulness, the traffic projects are worked out, and the alternative. More detailed solutions of technical problems are designed. At project development there are used various forms of initial documents, results of the actual data gathering and surveys, map sheets, photographs, previous documents referring to the problems solved, and appropriate legal and technical standards. The article presents the experience with the issue of GIS in construction in preparation of buildings, in the implementation phase of the construction in GIS. It presents a model of information system construction and technology of mobile GIS for data collection and use of mobile GIS in water management. © 2013 IEEE.

Wang S.-X.,Second Monitoring and Application Center | Xue F.-P.,Second Monitoring and Application Center | Li N.,Second Monitoring and Application Center
Earthquake | Year: 2012

Based on a brief summary on the practice of crustal deformation monitoring and earthquake prediction, and combined with the existing research results of regional crustal deformation before the 2001 M S8.1 Kunlun and the 2008 M S8.0 Wenchuan earthquake, this paper elaborates that it is necessary and important to focus on the geological background and tectonic deformation in different layout modes to enhance the ability of seismic deformation monitoring in considering that today the crustal deformation observation technologies continuously advance to high precision, high resolution and efficiency and convenience. Then according to the regional tectonic dynamic background and deformation mode of the southwest margin of the Ordos block, we present and discuss some ideas and methods which can optimize the layout of monitoring and capture the dynamic information of the abnormal surface changes effectively in this key monitoring area.

Qu W.,Changan University | Qu W.,University of Glasgow | Zhang Q.,Changan University | Wang Q.,Second Monitoring and Application Center | Li Z.,University of Glasgow
Wuhan Daxue Xuebao (Xinxi Kexue Ban)/Geomatics and Information Science of Wuhan University | Year: 2011

In this paper, two-dimensional finite model of elastic mechanics is established according to the geological structure features of Weihe Basin. And the author obtains the stress and strain characteristics by the 2001~2007 GPS data in this region. In the end combine with the characteristic of recently seismic activity in Weihe basin, The relation between crustal deformation characteristics and the seismic activity is also discussed. The results show that current tectonic stress field of this basin presents tensile stress with NNW-SSE direction. The spatial distribution of maximum shear strain rate in Weihe basin has a very good correlation with small modern seismic belt. The region of Jingyang-Xianyang-Xi'an-Lintong-Sanyuan belongs to the weak zone in the crust of Weihe Basin which is apt to basin extension and earthquake preparation.

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