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Related publications (80)

Laser-driven generation of intense single-cycle THz field

Christoph Peter Hauri, Fernando Ardana Lamas

We report on laser-based, high power single-cycle THz source. The THz radiation is generated by four-wave mixing in plasma and by optical rectification in organic salt crystal pumped by powerful optical parametric amplifier. The first approach permits the ...

2012

Invertible Extractors and Wiretap Protocols

Mohammad Amin Shokrollahi, Mahdi Cheraghchi Bashi Astaneh

A wiretap protocol is a pair of randomized encoding and decoding functions such that knowledge of a bounded fraction of the encoding of a message reveals essentially no information about the message, while knowledge of the entire encoding reveals the messa ...

2012

Improved snowmelt simulations with a canopy model forced with photo-derived direct beam canopy transmissivity

Michael Lehning

The predictive capacity of a physically based snow model to simulate point-scale, subcanopy snowmelt dynamics is evaluated in a mixed conifer forest, southern Sierra Nevada, California. Three model scenarios each providing varying levels of canopy structur ...

Amer Geophysical Union2012

Localized and delocalized Ti 3d carriers in LaAlO3/SrTiO3 superlattices revealed by resonant inelastic x-ray scattering

Thorsten Schmitt, Joël Mesot

The important source of interface conductivity in LaAlO3/SrTiO3 heterostructures, the Ti 3d carriers, is probed with resonant inelastic x-ray scattering at the Ti 2p(3/2) edge of epitaxially grown superlattices. We reveal unambiguously the generation of bo ...

2011

Long-term changes in annual maximum snow depth and snowfall in Switzerland based on extreme value statistics

Juliette Ferial Blanchet

Mountain snow cover is an important source of water and essential for winter tourism in Alpine countries. However, large amounts of snow can lead to destructive avalanches, floods, traffic interruptions or even the collapse of buildings. We use annual maxi ...

2011

Asymmetric Multilevel Diversity Coding and Asymmetric Gaussian Multiple Descriptions

Suhas Diggavi

We consider the asymmetric multilevel diversity (A-MLD) coding problem, where a set of 2(K) - 1 information sources, ordered in a decreasing level of importance, is encoded into K messages (or descriptions). There are 2(K) - 1 decoders, each of which has a ...

2010

Regional, National, and International Nanoelectronics Research Programs: Topical Concentration and Gaps

Mihai Adrian Ionescu

This paperwill outline some results obtained by an international working group on nanoelectronics, which collects data from major publicly funded programs in Europe, Japan, and the United States on long-term nanoelectronics research. It maps these programs ...

2010

The gist of everything new: personalized top-k processing over web 2.0 streams

Karl Aberer, Sebastian Michel, Parisa Haghani

Web 2.0 portals have made content generation easier than ever with millions of users contributing news stories in form of posts in weblogs or short textual snippets as in Twitter. Efficient and effective filtering solutions are key to allow users stay tune ...

ACM2010

Emerging Risks: Sources, Drivers and Governance Issues (2nd ed.)

Marie-Valentine Renée Agnès Florin

With this concept note, IRGC intends to help improve the understanding and governance of emerging risks that have impacts on human health and safety, the environment, the economy and society at large. It draws from a roundtable discussion in 2009 about why ...

International Risk Governance Council (IRGC)2010

Study of an octahedral antenna for both sound pressure level estimation and 3D localization of multiple sources

Hervé Lissek, Xavier Falourd, Patrick Marmaroli

This study deals with localization and characterization of multiple sources by mean of an octahedral array processing. We show how correlations enable to both localize more sources that the number of sensors and estimate their sound level pressure simultan ...

2010

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