Hastad showed that low exponent RSA is not secure if the same message is en-crypted to several receivers. This is true even if time-stamp is used for each receiver. For example, let e = 3. Then if the number of receivers = 7, the eavesdropper can nd the plaintext from the seven ciphertexts of each receiver. This paper shows that elliptic curve RSA is not secure in the same scinario. It is shown...

VAST 2013 Mini-Challenge 1 was a rolling competition in which participants would submit a set of weekly predictions for movie revenue and viewer rating. This was a closed world contest in which contestants were provided with a set of Twitter indices, bitly links, and access to the Internet Movie Database. In order to facilitate these predictions, we have created a web-deployable system that com...

BACKGROUND The 2005 American Thoracic Society/European Respiratory Society guidelines on spirometry emphasize examination of the inspiratory curve of the flow-volume loop for evidence of intrathoracic or extrathoracic upper airway obstruction. We sought to determine how frequently evaluations are performed for abnormal inspiratory curves. METHODS We retrospectively reviewed all examinations p...

Receiver Operating Characteristic (ROC) curve is used to assess the discriminatory power of credit rating models. To identify the optimal threshold on the ROC curve, the iso-performance lines are used. The ROC curve and the iso-performance line assume equal classification error costs and that the two classification groups are relatively balanced. These assumptions are unrealistic in the applica...

A numerical simulation of the switching characteristics of a polarization multiplexed nonlinear-optical loop mirror demultiplexer is presented and compared with experiment. The model assumes that the optical fiber that composes the loop has a randomly varying birefringence, that the signal and the control pulses have the same frequency, and that these pulses are nearly solitons. Factors that af...

Classical knot theory is about the classification, up to isotopy, of embedded closed curves in three-dimensional space. Two closed curves embedded in three-dimensional space are said to be isotopic if there is a continuous family of embeddings starting with one curve and ending with the other curve. This definition of isotopy captures our intuitive notion of moving a length of elastic rope abou...