For many years computer-based concurrent engineering of products, denoted as Virtual Engineering (VE), has been developed to meet requirements in product development. Current research in concurrent engineering deals with the integration and synchronization of domain-specific (CAD design, simulation analysis) data and tools. This paper focuses on a flexible, multidimensional data model that inte...

maharloo lake, located at 23 kilometers from shiraz, has high value for local people and passengers due to its mild weather and natural interests. studying recreational values of this place is necessary to predict needs, remove scarcities and tourism development. the aim of this research is to estimate the outdoor recreational value of maharloo lake with the use of contingent valuation method. ...

due to urbanization and consequent environmental problems in iran, many people have been interested in improving the weather quality. lack of information about health risks as a result of pollution is a big obstacle which stops policy-making in this regard. the present study examines the type of relationship between low air quality and tehran citizens’ willingness to pay in order to improve wea...

Based on the user’s perceived value and perceived risk, this paper constructs the model of the willingness to use the willingness to pay the user, designs the corresponding questionnaire and conducts the online sample survey, and uses Excel and SPSS20.0 to analyze the theoretical model and research hypothesis, then puts forward some suggestions to promote the development of WeChat payment platf...

because of national and international importance of the anzali international wetland, this study attempts to determine the preservation value and estimate willingness to pay (wtp) by iranian households for preserving this wetland, using contingent valuation method. a logit model was employed with maximum likelihood estimation procedure. results showed, education level of householder, informativ...

in this study, detection and identification of common faults in industrial gas turbines is investigated. we propose a model-based robust fault detection(fd) method based on multiple models. for residual generation a bank of local linear neuro-fuzzy (llnf) models is used. moreover, in fault detection step, a passive approach based on adaptive threshold is employed. to achieve this purpose, the a...

In this paper a two-input, two-output (TITO) fractional order mathematical model of a laboratory prototype of a hydraulic canal is proposed. This canal is made up of two pools that have a strong interaction between them. The inputs of the TITO model are the pump flow and the opening of an intermediate gate, and the two outputs are the water levels in the two pools. Based on the experiments deve...

Faced upon the research status of Aculops lycopersici, the importance of population dynamic has been put forward. The feasibility and superiority of cellular automata applied in the simulation of Aculops lycopersici has been discussed. This paper has put forward an Aculops lycopersici population dynamic model prototype based on cellular automata, the result showed that this model can be used to...