The role of the nuclear medicine has changed, from the early days when it was the only alternative to x-rays, to the present, when nuclear images are interpreted in light of specific metabolic processes, not anatomy. The development of specific receptor targeting radiopharmaceuticals, markers of viability using PETor SPECT, analogues of neurotransmitters etc., have placed the nuclear medi...

Clusters are often defined to be the connected components of a density level set. Unfortunately, this definition depends on a level that needs to be user specified by some means. In this paper we present a simple algorithm that is able to asymptotically determine the optimal level, that is, the level at which there is the first split in the cluster tree of the data generating distribution. We f...

A successful unified description of ¯ p nuclear interactions near E = 0 is achieved using a ¯ p optical potential within a folding model, V opt ∼ ¯ v * ρ, where a ¯ pp potential ¯ v is folded with the nuclear density ρ. The potential ¯ v fits very well the measured ¯ pp annihilation cross sections at low energies (p L < 200 MeV/c) and the 1s and 2p spin-averaged level shifts and widths for the ...

We show that anomaly detection can be interpreted as a binary classification problem. Using this interpretation we propose a support vector machine (SVM) for anomaly detection. We then present some theoretical results which include consistency and learning rates. Finally, we experimentally compare our SVM with the standard one-class SVM.

Optimal conditions for the isolation of nuclear envelopes by the action of heparin on nuclei are established and a morphological and biochemical study of such isolated envelopes is presented. An almost 100% yield of pure nuclear envelopes can be obtained by a single sedimentation step after incubation of nuclei with heparin for 40 min at 4 degrees C. The nuclear membrane pellet obtained in this...