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In view of the current situation that lacking of the guidance method on evaluation emergency ability for construction enterprises,This article uses the extension matter-element model to evaluate construction enterprise accident emergency ability. According to the time node characteristics of accident emergency ability,Using AHP for constructing the evaluation index system of accident emergency abilities of construction enterprises and determining the weight coefficient of each index ,Using extension theory to establish the evaluation model of construction enterprise emergency ability,and taking an example conducted evaluation and determined the accident emergency ability grade.

The hidden costs due to the current evaluation model for green building lacks relevance, and therefore this paper, fuzzy comprehensive evaluation method, From the three major aspects of business, users and social selected 16 indicators of the operational phase of the hidden costs of starting to build a green building implicit operational phase cost evaluation model through structural entropy method will combine objective assignment method and subjective assignment method to determine the evaluation index weights, In order to achieve the operational phase of the project the green building real-time monitoring of hidden costs. The results show that the hidden costs of green building evaluation index for multi-operational phase problem, the method can be more objectively and accurately reflect the size of the extent of its hidden costs.

The first-principles with pseudopotentials method based on the density functional theory was applied to calculate the formation energy of impurities and the electronic structure of ZnO doped with Na. In Na-doped ZnO, NaOis the most unstable than the other cases. Simultaneously, NaZnis more stable than Naiaccording to that NaZnhave smaller formation energy. Furthermore, the electronic structure of Na-doped ZnO indicates that that NaZnbehaves as an acceptor, while Naibehaves as a donor.

Aiming at the existing defects of pipeline risk assessment model of Kent index method on spill score,population score and leak impact factor, five compensation coefficient are put forward in pipeline risk assessment basic model qualitatively,of which include past failure modes,emergency response, sensitive environment,high value areas and support/oppose of nearby residents.Thus,the compensation correction model on leak impact factor of pipeline risk assessment are established.This model enhances the accuracy for the work of pipeline risk assessment.Finally,the verification analysis showed that the modified model can objectively reflect the degree of pipeline risk.

According to the characteristics of construction project, it set the third level of duration implicit cost, deepening the understanding of the duration implicit cost in construction project. Through analyzing the similar characteristics of the technique of project network diagram and neural network, it built a duration implicit cost control model based on neural network, which can adjust the project network diagram to the optimization direction. Aiming at the defects of the traditional neural network, the variable learning rate back-propagation arithmetic and the additional momentum method were introduced, and the duration implicit cost control model was built, improving the accuracy of the control for the neural network technique.

In recent years, Building Information Modeling has been more and more used in China's building industry. However, several resistances that hamper the use of BIM in China appear in the process of BIM implementation. And this research intents to identify these obstructions and find the solutions. Key words: BIM; BIM Implementation In China ; Obstruction; Solutions

Green construction plays an important role in the formation of green building. For the characteristics of fuzziness and incompatibility, this paper introduces the theory of fuzzy matter-element into the evaluation of green construction. The power weight is worked out with the entropy method, the related degree values between the standard fuzzy matter-element and each fuzzy matter-element is established, it lines up each scheme to pick up the best scheme. The result shows that among the methods of multiple indexes comprehensive evaluation of green construction, this method can reflect the extent of green construction objectively and accurately.

Based on the 3D mine software platform and aimed at optimizing the ore blending process,according to the different lithological features of Molybdenum and Tungsten in Sandaozhuang open pit,the data integration of storage,update and management in different maps,images,tables,lithology was realized.Using the lithologic database and human-computer interaction technology,the complex lithology profile of exploration line has been drawn,and based on the technology of triangulation,the lithology model of skarn, hornfels, quartzite has been established. The construction shows that this model can provide theoretical basis and data foundation for ore blending method of lithology.