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Digital instrumentation and control systems has been widely used to high-risk system, which changes the context influencing human performance, cognitive processes and human-machine interaction, thus lead to new human errors and error mechanism. This paper constructs the extended human error analysis model for analyzing the possible cognitive and action errors. And then human error causal factors are...
Firstly, this article introduce foreign theoretical research of risk management in the subway tunnel project from four aspects that evaluation theory, management model, accident statistics, risk analysis. Secondly, the paper analyze foreign practice research of risk management in the subway tunnel project from four aspects that computer simulation, information platform, standards, government regulations...
Considering a Supervisory Control And Data Acquisition (SCADA) system has been installed in many municipal water supply networks, the water network scale mostly is big and the district meter area (DMA) have not been realized in China, a leak detection model based on the cluster-analysis and fuzzy pattern recognition theorem is introduced. First, computer simulation of pipe leak is realized, and a...
The credit risk measurement of the Small and Medium Enterprises (SMEs) is a big problem in resolving their financing difficulties. In this paper, by improving the precision of parameters, we use the improved KMV model to identify the credit risk of listed SMEs in China. The model effectiveness test indicates that the KMV model after adjusting parameters is sensitive to the changes of credit risk,...
The paper analyze the Solow's efficiency wage model, Shapiro and Stiglitz's monitoring and shirking model, Salop's turnover costs model, Akerlof's adverse selection and gift exchange model, point out the defects of these models, suggest we should pay attention to the hypothetical condition and the limitation of these model; At last the paper discusses the developing directions of these models.
Safe Community growing so fast within the country and around the world, its core sense is to build cross- sectional group, resource integration, full participation and continuous improvement. This article focuses on how to establish and perfect the basic emergency management system in the model of Safe Community: First of all, analyzed the situation and the shortage of our emergency management in...
This study presents stress analysis of sheave wheel by a finite element analysis model and experimental tests. Simulation of stress field under two kinds of load condition was carried out with ANSYS. The corresponding relationship between stress and load of hoist as well as sheave wheel's phase angle were obtained. Then field experiments of sheave wheel stress under three kinds of conditions, which...
We illustrate a conceptual framework for business oriented Service Level Management (SLM). Currently IT systems are complex objects that support business operations. To be meaningful, a control system should link business and IT performances. This need, though recognized by most IT management frameworks, is not specifically analyzed. Defining a methodology capable to identify this link is the purpose...
Rock slope is an unknown and complicated system; As for time series with strong randomization, application of the modified GM(1,1) was much more precise than ordinary GMs by comparison. And for time series with fluctuate positive and negative data, translation of the data and revivification after modeling was introduced to make an expansion of the application of the modified GM(1,1). The fitting and...
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