The goal of the reported project is to test and evaluate 3D surveying and modelling methods to document the remaining ancient byzantine city walls of the archaeological site of Aquileia in Friuli Venezia Giulia, Italy. The objectives are threefold: (1) to use 3D data to create maps, façades and sections that provide information useful for archaeological purposes such as the investigation of arc...

Introduction: The biological denitrification process is an interesting cost-effective technique to remove nitrate from water supplies. Acetic acid can be used as a carbon source in this process, but its consumption rate is a critical issue and, in some cases, it is quite different from stoichiometric constants. The current study aimed to investigate the nitrate removal in an up-flow packed bed ...

In a project dealing with landscape archaeology the Institute for Preand Protohistory of the Mainz University and the Institute for Spatial Information and Surveying Technology (i3mainz) have been examining the area of the Celtic oppidum “Hunnenring” in the northern Saarland (Germany) since the end of 2006. The monumental northern wall of this prehistoric town is preserved up to a height of 10 ...

GPS solutions offer direct dynamic monitoring of long-span and tall civil structures. Timely and correct interpretation of the solutions is essential to improved monitoring and reduced number of false alarms. In this article, a new approach has been developed which employs the principal component analysis (PCA) of wavelet transformed GPS solutions to detect out-of-control signals. The methodolo...

Accurate measurement of the railway track geometry is a task of fundamental importance to ensure the track quality in both the construction phase and the regular maintenance stage. Conventional track geometry measuring trolleys (TGMTs) in combination with classical geodetic surveying apparatus such as total stations alone cannot meet the requirements of measurement accuracy and surveying effici...

a communication net is usually represented by a linear graph g whose branches represent channels for information flow and whose vertices represent sources, sinks and switching centers. the purpose of this paper is to show that for modeling digital communication nets, conventional use of the concepts of capacity and terminal capacity is inadequate . we will present an alternative to max-flow min...

doppler ultrasound can provide important information about vascular problems through the analysis of blood flow wave-form. the purpose of this study was obtaining the normal images of color doppler and estimation of blood flow velocity parameters of femoral artery in rabbits. left and right femoral arteries of 8 healthy adult new zealand rabbits were evaluated. color and spectral doppler images...