Traditionally, the foremost concern among transportation engineers has been the safety and reliability of major infrastructure components. Until recently, sustainability has not been included in most infrastructure systems on any level. However, the engineering community, along with society as a whole, is realizing the importance of sustainability-oriented infrastructure systems. Yet incorporat...

Taking a process research approach, we have followed a government agency in the railroad industry over a six-year-period as they have engaged in an IT-based innovation project. Providing empirical insights into this process and using path creation theory to analyse our case, we further our understanding of how IT-based innovations evolve over time by highlighting its multi-dimensional nature. W...

Recently, distance learning (DL) has made great achievements in the area of communication space development and the automatic administration of educational processes [1]. Considerably less attention has been paid to the particularities of didactic materials design for DL. The authors claim that a special methodology of didactic material design, based on a cognitive approach, has to be developed...

This paper deals with designing material parameters for physical models. It is shown that the characteristic relation between modal frequencies and damping factors of a sound object is the acoustic invariant of the material from which the body is made. Thus, such characteristic relation can be used for designing damping models for a conservative physical model to represent a particular material.

In the present study, the effect of porosity on the cathode microstructure (50:50 wt. % LSM: YSZ) of a Solid Oxide Fuel Cell (SOFC) has been examined. A 3-D finite element method for Mixed Ionic and Electronic Conducting Cathodes (MIEC) is presented to study the effects of porosity on cell performance. Each microstructure was realized using the Monte Carlo approach with the isotropic type o...