Empirical observations suggest that in practice, community membership does not completely explain the dependency between edges of an observation graph. The residual dependence graph are modeled this paper, to first order, by auxiliary node latent variables affect statistics but carry no information...

In late March 2020, we faced a nosocomial outbreak of novel coronavirus disease 2019 (COVID-19) at Keio University Hospital, Tokyo, Japan. Presently, COVID-19 is an unprecedented worldwide biohazard, and can occur in any hospital time. Therefore, reviewed the literature regarding preparedness, initial management COVID-19, surveillance healthcare workers (HCWs) to find information that would be ...

This paper analyses the stream cipher SSC2 [ZCC00]. We describe some weaknesses and attacks exploiting these weaknesses. The strongest attack needs about 2 words of known key stream and has a time complexity of about 2.

A chosen-plaintext attack on two-key triple encryption noted by Merkle and Hellman is extended to a known-plaintext attack. The known-plaintext attack has lower memory requirements than the chosen-plaintext attack, but has a greater running time. The new attack is a significant improvement over a known-plaintext brute-force attack, but is still not seen as a serious threat to two-key triple enc...

In this paper, we revisit the famous Davies-Murphy cryptanalysis of DES. First we improve its complexity down to the analysis of 2 chosen plaintexts, by considering 6 distributions instead of 7. The previous improvement of the attack by Biham and Biryukov costed 2 known plaintexts. This new result is better than differential cryptanalysis but slightly worse than linear cryptanalysis. Secondly, ...

Out of dissatisfaction with currently available software, we built a music management program for large digital music libraries. We propose a system that solves some of the difficulties of organizing these libraries. The system introduces a new visual interaction style with the user’s music collection. A physics system coupled to album’s genre information allows the user to spatially order his ...