To understand the dynamics of dust storm, it is necessary to have three−dimensional data containing of surface and higher levels data. With respect to few and non−uniform scattering of meteorological stations, dust storm simulation using coupled numerical models is inevitable. In this context, the simulation systems, which is designed to identify the dynamics of the dust emissions in the atmosphere is used. At present research, using the Weather Research and Forecasting model with Chemistry (WRF−Chem.) is used to simulate dust storm and to investigate dust emission. The appropriate input data of the simulation system includes surface, soil erosion, and NCEP FNL data. After selecting the tailored configuration of the simulation system, the system is run for a 3−day period from twelve o'clock on February 3, 2013 to twelve o'clock on February 6, 2013. Comparison of the results resulting from simulation and images resulting from MODIS sensor and synoptical analysis of storm using output data show that the WRF−Chem. system is able to simulate storm event and dust emission in the study area, i.e. west Asia. Furthermore, with respect to appropriate input data this system relatively is able to position dust sources.

Evaluating of climate situations related to human comfort is the major concern of architecture, urbanization and tourism. Therefore, estimating and comparison human comfort in different climates would be necessary. In this research, in order to the assessment of human comfort,  two different climates of Iran(central parts and humid coastal of Persian Gulf) were considered by using of Apparent Temperature index (AT) .Yazd and Bushehr are two cities that were selected as a sample of arid and humid climates, respectively. Mean temperature, mean highest temperature, mean relative humidity and mean lowest relative humidity during two decades (1991-2010) from Iran Meteorological Organization were obtained. The results show that during warm months, due to increasing temperature the risk of heat stroke and other health problems is imminent.

Many industrial problems are highly non-linear and are thus difficult to solve analytically. A typical problem of this nature in the petroleum industry is the flow of fluids in porous media. In this work, a dimensionless non-linear ordinary differential equation for transient flow behavior of oil production in porous media was derived and solved using the Homotopy Analysis Method (HAM).

The results obtained by the HAM solution were found to be in good agreement with the exact solution as demonstrated by the residual plots which confirms that the pressure distribution in the porous medium can be accurately predicted with the HAM solution with average relative error of +-0.5%. The solutions of the linear and non-linear dimensionless pressure differs as follows: for λ = 1  , DV (differential value) and RDV (relative differential value) of Dimensionless Pressure  are 1.27 and 25.3%, respectively; and the HAM solution to the three field examples (case 1, 2 and 3) gave 99.96%  accuracy; an indication that the HAM solution can be used in predicting reservoir response with +-0.04% error.

The analyses used to compare the solutions of the linear and non-linear models lends better understanding of the effectiveness of HAM and shows that its computation is not as rigorous compared to other methods.

During the recent decades of years, with the booming of tourism industry, as an insular country, most of tourists in Taiwan go abroad by air for business or travel. However, in recent decades of years, due to the various airline accidents caused by natural factors or human factors, the current crisis management method of airlines will have a great effect on tourists’ viewpoints for airlines. Consequently, tourists gradually make the requirements for the service quality of airlines, and each link should be given great carefulness from check-in in the airports to the flying process.

This research focuses on the discussion whether the service quality provided by airlines will influence tourists’ choice for the airlines when they would like to go abroad by air. In terms of research method, a questionnaire is developed based on expert opinions and literature review. The Modified Delphi Method is used to find out its affecting dimensions and criteria. Analytic Hierarchy Process (AHP) is used for the analysis of weight.

The results suggest that the affecting dimension hierarchy valued most by tourists is flight safety and company image, booking and ticket price, flight arrangement and in-flight service in order; the affecting criteria valued highly by tourists is good flight safety record, comfortable seats in cabin, reasonable ticket price, clean and tidy cabin and good company image in order. Air service quality requires professional and diversified services to make tourists feel value for money, as the factors affecting air service quality are very important and indispensable to each other.