Notice of RetractionResearch on fuzzy comprehensive assessment for fire safety of regional buildings
The primary mission of fire safety assessment is seeks the change rule of system security, and entrusts with the certain quantity of the concept. Then according to the security condition and the degree of hazard of the system, take the essential measure to achieve the anticipated security goal. According to the characteristic, the origin of the buildings fire, the paper adopted the fire safety assessment method to research the preventing and controlling on buildings fire. The paper briefly introduced the fire safety assessment principle, the theory and the method, and adopted the fuzzy synthesis assessment method as the reasonable method for the fire safety evaluation of buildings. A fire safety assessment index system was founded firstly. Then, the calculation methods for the weight of evaluation indexes and fuzzy calculation were described. Finally, a comprehensive regional buildings fire evaluation and emergency response system was illustrated.
Application of Computational Simulation in Fire Science and Engineering Research
Computational simulation, especially field modeling, is highly developed in recent years. While it has been widely used in many fundamental research and engineering fields, few were applied to aspects of fire science and engineering research. In this paper, the developments and applications of computational simulation for fire dynamics arc firstly reviewed. The basic principles of large eddy simulation are described in detail, which involves turbulence modeling, combustion modeling, and thermal radiation modeling. An example of numerical experimental study of fire dynamics process for oil tank fire with large eddy simulation technology is provided and some fire provisions are approved with respect to the results. 
From the case, it is shown that field modeling has an extensive application future in fire safety science and engineering research. And it will become an effective means in fire management, fire risk evaluation, decision -making and supporting plan for severe disasters and so on.
Prediction of a representative point for rail temperature measurement by considering longitudinal deformation
Monitoring rail temperature is very important for determining the safe running speed of trains and to prevent buckling. In general, the maximum variation of the internal rail temperature can be >7 ℃ depending on the point of measurement. However, there is as yet no sufficient information about how to predict the measurement point to represent the thermal deformation due to temperature distribution. In this study, the authors report a new point, called the representative measurement point, at which the rail temperature can be measured. This point considers the average deformation of the rail through structural analysis by adopting experimental and actual rail temperature data. The authors designed and installed a measurement system similar to an actual rail environment. Using the system, various data were acquired (internal/surface rail temperature and weather data) for 10 months. On the basis of these data, an analysis was done to calculate the average deformation point through thermal analysis. Finally, the representative measurement point was proposed as the position at which the average deformation point converges regardless of weather or seasons. The authors believe that the method described herein is advantageous in that it could be used in a high-accuracy temperature-monitoring system and for predicting thermal deformation and buckling.