[1] The energy input to the upper ocean Ekman layer is assessed for the Southern Ocean by examining the rotary cross spectrum between wind stress and surface velocity for frequencies between 0 and 2 cpd. The wind stress is taken from European Center for Medium-Range Weather Forecasts ERA-40 reanalysis, and drifter measurements from 15 m depth are used to represent surface velocities, with an ad...

We are now in the post-PC era, yet our mobile devices are insecure. We consider the different stake-holders in today’s mobile device ecosystem, and analyze why widely-deployed hardware security primitives on mobile device platforms are inaccessible to application developers and end-users. We systematize existing proposals for leveraging such primitives, and show that they can indeed strengthen ...

To my family in China and my wife Yun ACKNOWLEDGEMENTS I wish to thank Prof. Robert Dickinson for advising my thesis and providing support for my PhD study for the past five years. This dissertation would be impossible without his continuous encouragement and support. I am grateful to the support and help from and discussions with Prof. Albany). I also like to thank my current and past group me...

A new nonparametric method to correct model data is proposed. At any given point in space and time the correction is determined from “analogs” in a learning dataset. The learning dataset contains model data and simultaneous observations. The method is applied to the significant wave height dataset of the 45-yr European Centre for Medium-Range Weather Forecasts Re-Analysis (ERA-40). Comparison o...

inscriptions in calligraphy, hard stone carving and rock reliefs have a long tradition in iranian art. although from the pre-islamic times many important samples of three dimensional sculptures have been found in iran, during the islamic era, because of the religious edicts and beliefs, that they had the sculpting prohibited, the art of sculpture couldn’t be developed in the way of pre-islamic ...

calligraphy, as a prominent art incorporated into persian and islamic architecture, supplys messages and brings beauty to the eyes of the beholder. the most important messages in architecture are directly expressed by inscriptions. different types of inscriptions are shaped in the form of mosaic works, multiple painted patterns, tiles, bricks or plaster techniques. although in qajar period trad...

Evaluation of the vertical diffusion coefficients from ERA-40 with Rn simulations D. J. L. Olivié , P. F. J. van Velthoven, and A. C. M. Beljaars Royal Netherlands Meteorological Institute, De Bilt, The Netherlands Eindhoven University of Technology, Eindhoven, The Netherlands European Centre for Medium-range Weather Forecasts, Reading, UK Received: 15 June 2004 – Accepted: 15 July 2004 – Publi...