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This paper analyzes the input-output model based on data envelopment analysis (DEA), puts forward an input-output model of the vessel traffic services (VTS) based on DEA and builds the input and output index of this model combining with the demand characteristics of the running VTS' efficiency assessment. Combining with an instance of VTS, this paper analyzes the algorithm of the proposed model and...
The paper introduce the necessity and urgency of building data warehouse in coal mine enterprise, and then research the characteristics and architecture of data warehouse in coal mine enterprise; according to the inherent characteristics of coal mine enterprise, the typical subjects of data warehouse in coal mine enterprise are built; and according to system requirements of data warehouse in coal...
Structural equation model is constructed to discuss the interaction between affecting factors of safety management capability of coal mine. Fundamental data is acquired from questionnaire of coal mine worker. 20 factors in all classified into four layers: worker, team, firm and environment are extracted in questionnaire. Taking factors of worker layer as endogenous latent variable, taking factors...
Building information modelling (BIM) is only a tool in the procurement of a building, but it is changing the way the whole process is undertaken. Having a single model which is used by all disciplines requires a different management structure and by consequence a restructuring of the resources required to complete a project.These changes are encompassed in Integrated Practice and more recently Integrated...
The construction industry has been facing a paradigm shift to (i) increase; productivity, efficiency, infrastructure value, quality and sustainability, (ii) reduce; lifecycle costs, lead times and duplications, via effective collaboration and communication of stakeholders in construction projects. Digital construction is a political initiative to address low productivity in the sector. This seeks...
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