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Land ecosystems classification and eco－economic evaluation.in Wuding River Basin of Yulin Region

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Journal of Environmental Sciences 1995年第3期7卷 273-282页

作者： Chen Liding Fu Bojie(Research Center for Eco-Environmental Sciences, ChineseAcademy of sciences, Beijing 100085. China)

Ｌａｎｄｅｃｏｓｙｓｔｅｍｓｃｌａｓｓｉｆｉｃａｔｉｏｎａｎｄｅｃｏ－ｅｃｏｎｏｍｉｃｅｖａｌｕａｔｉｏｎｉｎＷｕｄｉｎｇＲｉｖｅｒＢａｓｉｎｏｆＹｕｌｉｎＲｅｇｉｏｎＣｈｅｎＬｉｄｉｎｇ；ＦｕＢｏｊｉｅ（Ｒｅｓｅａ... 详细信息

Ｌａｎｄｅｃｏｓｙｓｔｅｍｓｃｌａｓｓｉｆｉｃａｔｉｏｎａｎｄｅｃｏ－ｅｃｏｎｏｍｉｃｅｖａｌｕａｔｉｏｎｉｎＷｕｄｉｎｇＲｉｖｅｒＢａｓｉｎｏｆＹｕｌｉｎＲｅｇｉｏｎＣｈｅｎＬｉｄｉｎｇ；ＦｕＢｏｊｉｅ（ＲｅｓｅａｒｃｈＣｅｎｔｅｒｆｏｒＥｃｏ－Ｅ...

关键词： land ecosystem classification eco-economic effects evaluation.

NCEES:An Expert System To Nuclear Calamity evaluation

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Journal of Systems Engineering and Electronics 1994年第4期5卷 65-70页

作者： Yuan Zaijiang Shi LiankeSystem Department of Yansnan Computer Research CentreGu Jif aInstitue of System Science Academia Sinica System Department of Yanshan Computer Research Centre Institue of System Science Academia Sinica

This paper introduces a nuclear calamity evaluation.expert system which is applied to comprehensive evaluation.of damage effects of nuclear calamities. It contains hardware environment, overall structure, logical step... 详细信息

关键词： Nuclear calamity Expert system Damage effects evaluation.

evaluation.of Petroleum System in Xihu Depression, East China Sea Shelf Basin

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Journal of China University of Geosciences 2001年第4期12卷 343-350页

作者： Ye Jiaren L■ Delin Faculty of Earth Resources , China University of Geosciences, Wuhan 430074 Gu Huirong Planning & Designing Institute, Shanghai Offshore Petroleum Bureau, Shanghai 200120 Faculty of Earth Resources China University of Geosciences Wuhan 430074 Planning & Designing Institute Shanghai Offshore Petroleum Bureau Shanghai 200120

According to the theory of petroleum system and the characteristics of petroleum geology, the Xihu depression in the East China Sea shelf basin is divided into four petroleum systems: the Pinghu Formation as source rock and the Huagang Formation as reservoir rock, the Huagang Formation as source rock and reservoir rock, the Paleocene as source rock and the burial-hill as reservoir rock, and the Miocene as source rock and reservoir rock. The system with the Pinghu Formation as source rock and the Huagang Formation as reservoir rock is the most important one in the depression, which has high hydrocarbon generation and accumulation efficiency and is the most important object to hydrocarbon exploration at present.

关键词： Xihu depression petroleum system geological element pool-forming process evaluation.

GIS-Based evaluation.of Danger in Karst Collapse

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Journal of Earth Science 2001年第2期 39-43页

作者： Chen Xuejun Engineering Faculty, China University of Geosciences, Wuhan 430074 Chen Fujian Liu Baochen Bao Huiming Department of Civil Engineering, Guilin Institute of Technology, Guilin 541004

In this paper, feasibility and advantage of GIS technology are discussed to make a quantitative evaluation.of karst collapses, a fast and precise evaluation.method for developing interface between the karst collapse and GIS based evaluation.model is used to predict major natural geological disasters. A complete procedure of fuzzy hierarchical GIS based evaluation.of karst collapses is illustrated with the karst collapses in western urban area of Guilin, China.

关键词： GIS karst collapse affected factor fuzzy evaluation.

Reduced parameter model on trajectory tracking data with applications

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Science China(Technological Sciences) 1999年第2期42卷 190-199页

作者：王正明朱炬波 Department of Mathematics National University of Defense Technology

The data fusion in tracking the same trajectory by multi-measurement unit (MMU) is considered. Firstly, the reduced parameter model (RPM) of trajectory parameter (TP), system error and random error are presented, and then the RPM on trajectory tracking data (TTD) is obtained, a weighted method on measuring elements (ME) is studied and criteria on selection of ME based on residual and accuracy estimation are put forward. According to RPM, the problem about selection of ME and self-calibration of TTD is thoroughly investigated. The method improves data accuracy in trajectory tracking obviously and gives accuracy evaluation.of trajectory tracking system simultaneously.

关键词： trajectory tracking data reduced parameter model selection of measurement units self-calibration accuracy evaluation.

Impact of Tactical Parameters of Aircraft on Jamming Effectiveness of Surface-Source IR Decoy

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Computer Modeling in Engineering & Sciences 2019年第2期118卷 425-446页

作者： Shenbo Li Qi Tong Chaozhe Wang Aeronautics Engineering Institute Air Force Engineering UniversityXi’an710038China.

As the platform for surface-source infrared decoys,the target aircraft is the aim of attacks in air-to-air *** can quickly and accurately evaluate the jamming effectiveness of the surface-source IR decoy in various states of motion is important for enhancing the security of the *** paper proposes a model of surface-source IR decoy,and compares and analyzes simulated and measured infrared images of diffusion.A system to assess the effectiveness of the jamming of the surface-source IR decoy,target aircraft,and infrared guided missile called“Trinity”is *** were conducted to assess the impact of flight height,flight speed,and the maneuvering of the target aircraft on the jamming effectiveness of the surface-source IR *** results show that with an increase in flight height and speed,the jamming probability of a surface-source IR decoy first increases and then decreases,where evasive maneuvering by the target aircraft can effectively improve this *** the radius of the vertical snake maneuver was 125 m,that of the horizontal snake maneuver was 200 m,and the radius of the barrel roll maneuver was 250 m,the jamming probability of the surface-source IR decoy was relatively *** comparing the simulation results with measured data,the study verified the accuracy of the proposed method.

关键词： Surface-source IR decoy tactical parameters of aircraft jamming effectiveness infrared countermeasures effectiveness evaluation.

Precision ERS-2 orbit deter-mination combining multiple tracking techniques

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Chinese Science Bulletin 2001年第20期46卷 1756-1760页

作者： Zhang, FP Huang, C Liao, XH Feng, CG Chinese Acad Sci Natl Astron Observ Shanghai Astron Observ United Ctr Astrogeodynam Res Shanghai 200030 Peoples R China

Both of the oceanographic research by using altimetry and the application of InSAR of ERS-2 satellite need the precise ephemerides of the satellite. In this note, the ERS-2 orbit is precisely determined by using SLR and PRARE observations to take advantage of the high accuracy of SLR and the widespread data coverage of PRARE. Based on the software system SODS-VCE established by us, the ERS-2 orbits in 1997 are calculated. The evaluation.from tracking data fits, endpoint consistency of orbital arcs and comparison with independent orbit implies an orbit accuracy of 5-6 cm in radial component which can satisfy the requirement of being better than 10 cm in oceanographic research by altimetry, being less than 20 cm in cross-track component which can meet the requirement of InSAR. In orbit computation, the method of variance component estimation is employed to weight the SLR, PRARE range and Doppler measurements properly. The results indicate that the application of the method can improve the computation

关键词： precision orbit determination data combination variance component estimation accuracy evaluation.

Improving Adaptive Learning Rate of BP Neural Network for the Modelling of 3D Woven Composites Using the Golden Section Law

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Journal of Donghua University(English Edition) 2001年第1期18卷 81-84页

作者： Yi Honglei(易洪雷) Ding Xin(丁辛) College of Textiles Dong Hua University Shanghai 200051 College of Textiles Dong Hua University Shanghai 200051

Focused on various BP algorithms with variable learning rate based on network system error gradient, a modified learning strategy for training non-linear network models is developed with both the incremental and the decremental factors of network learning rate being adjusted adaptively and dynamically. The golden section law is put forward to build a relationship between the network training parameters, and a series of data from an existing model is used to train and test the network parameters. By means of the evaluation.of network performance in respect to convergent speed and predicting precision, the effectiveness of the proposed learning strategy can be illustrated.

关键词： BP algorithm, adaptive adjustment, network training parameter, learning strategy, network performance evaluation.

Evaluating the Permian Basalt Reservoir of Weel Zhou-1

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天然气工业 1995年第3期15卷 98-103页

作者： Niu Shan-zheng Pang Jia-li(Northwest Sichuan Mining District of Sichuan Petroleum Administration)

ＥｖａｌｕａｔｉｎｇｔｈｅＰｅｒｍｉａｎＢａｓａｌｔＲｅｓｅｒｖｏｉｒｏｆＷｅｅｌＺｈｏｕ－１￥ＮｉｕＳｈａｎ－ｚｈｅｎｇ；ＰａｎｇＪｉａ－ｌｉ（ＮｏｒｔｈｗｅｓｔＳｉｃｈｕａｎＭｉｎｉｎｇＤｉｓｔｒｉｃｔｏｆＳｉｃ... 详细信息

ＥｖａｌｕａｔｉｎｇｔｈｅＰｅｒｍｉａｎＢａｓａｌｔＲｅｓｅｒｖｏｉｒｏｆＷｅｅｌＺｈｏｕ－１￥ＮｉｕＳｈａｎ－ｚｈｅｎｇ；ＰａｎｇＪｉａ－ｌｉ（ＮｏｒｔｈｗｅｓｔＳｉｃｈｕａｎＭｉｎｉｎｇＤｉｓｔｒｉｃｔｏｆＳｉｃｈｕａｎＰｅｔｒｏｌｅｕｍＡｄｍｉ...

关键词： West part of Sichuan Province Permian Basalt Reservoir Logging evaluation.