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Now showing items 1 - 5 of 5

  • Study of the ship design process model for collaborative design

    He Ze   Qiu Chang-hua   Wang Neng-jian  

    The ship design process model is the basis for developing the ship collaborative design system under network environment. According to the characteristics of the ship design, a method for dividing the ship design process into three layers is pat forward, that is project layer, design task layer and design activity layer, then the formalized definitions of the ship design process model, the decomposing principles of the ship design process and the architecture of the ship collaborative design (SDPM) system are presented. This method simplifies the activity network, makes the optimization and adjustment of the design plan convenient and also makes the design process easier to control and change, at last the architecture of the ship collaborative design system is discussed.
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  • Monitoring Rice Phenology Based on Backscattering Characteristics of Multi-Temporal RADARSAT-2 Datasets

    He Ze   Li Shihua   Wang Yong   Dai Leiyu   Lin Sen  

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  • Cytoplasmic Retention of a Nucleocytoplasmic Protein TBC1D3 by Microtubule Network Is Required for Enhanced EGFR Signaling

    He Ze   Tian Tian   Guo Dan   Wu Huijuan   Chen Yang   Zhang Yongchen   Wan Qing   Zhao Huzi   Wang Congyang   Shen Hongjing   Zhao Lei   Bu Xiaodong   Wan Meiling   Shen Chuanlu   Song Young-Hwa  

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  • Evaluation and selection of the ship collaborative design resources based on AHP and genetic and simulated annealing algorithm

    He Ze   Qiu Chang-hua   Wang Neng-jian   Yao Ming-zhu  

    Abstract  The characteristics of the design resources in the ship collaborative design is described and the hierarchical model for the evaluation of the design resources is established. The comprehensive evaluation of the co-designers for the collaborative design resources has been done from different aspects using Analytic Hierarchy Process (AHP), and according to the evaluation results, the candidates are determined. Meanwhile, based on the principle of minimum cost, and starting fom the relations between the design tasks and the corresponding co-designers, the optimizing selection model of the collaborators is established and one novel genetic combined with simulated annealing algorithm is proposed to realize the optimization. It overcomes the defects of the genetic algorithm which may lead to the premature convergence and local optimization if used individually. Through the application of this method in the ship collaborative design system, it proves the feasibility and provides a quantitative method for the optimizing selection of the design resources.
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  • Assessing China's human-environment relationship

    Yang Yu   Li Xiaoyun   Dong Wen   Poon, P. H. Jessie   Hong Hui   He Ze   Liu Yi  

    China's coupled human-environment system (CHES) is assessed here via a systems schema that emphasizes the complex interactions of components and their attributes. In addition to the human and environment components, we identified two other components to evaluate the relationship. The four components are human activity intensity, resource carrying capacity, ecological constraints and system's openness. Based on their interactions, we derived a cognitive schema for classifying the level of strain or stress of an area. The analysis draws on 11 indicators and 29 sub-indicators including remote sensing data and statistical data that are used to estimate the four components. The findings indicate that human activities are highly intense in a few geographical areas, particularly large urban systems and trade and investment zones on the eastern coastal areas. Nonetheless, these areas are also well-endowed in water resources and fertile soils although urban systems are increasingly stressed from negative pollution externalities. They are also open systems which allow them to bear a higher level of pressure and adjust accordingly. Desertification and soil erosion point to relatively fragile biophysical systems in the west and southwest, but human activities are still relatively less intense compared to their coastal counterparts. As a whole, only 14% of areas may be said to be relatively or highly strained. This however belies another one-third of areas that are currently unstable, and likely to become strained and thereby vulnerable in the near future.
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