During the last decades, the railway traffic in densely populated areas has increased. At the same time, passenger trains have become faster and freight trains have become heavier. Consequently, trains are an increasing source of ground vibration, which may be a nuisance to people, buildings and sensitive equipment. In this research, a two-dimensional dynamic system, including underground train...

project participants are becoming more aware of the high costs and risks associated with delay claims and their litigation. among delays, weather delay has an important role in projects performed in severe environmental conditions. this research is the extension of delay analysis techniques by approving analysis of weather delays using fuzzy logic. at the presented technique, first using a fuzz...

sulfur dioxide has two important sources in the atmosphere and this is why most of scientists believe in a geographic split in the globe. power plants, major emitter of so2, are located in north hemisphere such as in russia, china, canada and the usa. in south hemisphere, phytoplankton produces a massive amount of dimethyl sulfide (dms) and dimethyl disulfide (dmds). then these types of reduced...

Security abstractions in programming languages benefit from the ability to base access control decisions on the temporal context of program execution. In this paper we formalize the notion of a history as a sequence of program events produced during program execution, and which allows execution contexts to be precisely characterized. We define a language λhist to model the incorporation of hist...

Article history: Received date: 28 July, 2016 Review date: 7 August, 2016 Accepted date:25 August 2016 Printed online: 1 September Purpose: The aim of the present study was to determine the effectiveness of group hope therapy on the time horizon and Optimism of divorced women aged between 25 to 40 years old in Tehran who referred to counseling centers. Materials and method: 30 ...

Non-Fourier heat transfer analysis of functionally graded (FG) spherical shells subjected to the radiative-convective boundary conditions at their inner and outer surfaces are presented. It is assumed that the material properties have continuous variations along the thickness direction. The incremental differential quadrature method (IDQM) as an accurate and computationally efficient numerical ...