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- Goddard Space Flight CenterUS68 papers
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51 papers · 1 filter
Two-hop Secure Communication Using an Untrusted Relay
Xiang He, Aylin Yener
We consider a source-destination pair that can only communicate through an untrusted intermediate relay node. The intermediate node is willing to employ a designated relaying schem…
Interference Channels with Strong Secrecy
Xiang He, Aylin Yener
It is known that given the real sum of two independent uniformly distributed lattice points from the same nested lattice codebook, the eavesdropper can obtain at most 1 bit of info…
Swift/XRT monitoring of the Supergiant Fast X-ray Transient IGR J18483-0311 for an entire orbital period
P. Romano, L. Sidoli, L. Ducci +9
IGR J18483-0311 is an X-ray pulsar with transient X-ray activity, belonging to the new class of High Mass X-ray Binaries called Supergiant Fast X-ray Transients. This system is one…
Decoherence and Collisional Frequency Shifts of Trapped Bosons and Fermions
Kurt Gibble
We perform exact calculations of collisional frequency shifts for several fermions or bosons using a singlet and triplet basis for pairs of particles. The "factor of 2 controversy"…
Building and using semiparametric tolerance regions for parametric multinomial models
Jiawei Liu, Bruce G. Lindsay
We introduce a semiparametric ``tubular neighborhood'' of a parametric model in the multinomial setting. It consists of all multinomial distributions lying in a distance-based neig…
Learning about Potential Users of Collaborative Information Retrieval Systems
Madhu Reddy, Bernard J. Jansen
One of the key components of designing usable and useful collaborative information retrieval systems is to understand the needs of the users of these systems. Our research team has…