Among laboratory mistakes, "specimen mix-up" is the most frequent and the most serious. According to the Clinical Chemistry Laboratory Error Report of Toranomon Hospital, specimen mix-up was often detected when there were many large discrepancies between the results of a test and the results of a previous test. We present here a checking method to detect specimen mix-up. The method, which we ca...

In our work we use queuing theory both for security (i.e. anonymity) and performance analysis. A well-known anonymity technique, the MIX method, which is the basis of most of today’s deployments, is the object of our investigation. We show shortcomings and problems in the MIX method and suggest possible workarounds. Our investigation reveals the level of security of MIX based systems and their ...

A liquid chromatographic method was applied for the analysis of two sustained-release mixtures containing dextromethorphane hydrobromide, carbinoxamine maleate with either phenylephrine hydrochloride in pharmaceutical capsules (Mix 1) or phenyl-propanolamine, methylparaben, and propylparaben, which bonds as a drug base to ion exchange resin in pharmaceutical syrup (Mix 2). The method was used f...

The Jakobsson hybrid Mix-net proposed by Jakobsson and Juels, is a very practical and efficient scheme for long input messages. But this hybrid Mix-net does not have public verifiable property. In this paper a new attack to the Jakobsson hybrid Mix-net is introduced. This attack breaks the robustness of the hybrid Mix-net scheme, given that the corrupted first mix server and one of the senders ...

Background The position of the intrauterine device (IUD) in Kenya’s contraceptive method mix among married women of reproductive age has declined over time, dropping from a prevalence of 4.2% in 1993 to 2.4% in 2003 (CBS, MOH, & ORC Macro, 2004). Moreover, as contraceptive prevalence has increased (currently at 33% for modern methods), the IUD’s share of the modern method mix has declined by ha...

We propose a variant mix-net method, which we call a “marked mix-net” . Marked mix-nets avoid the extra cost associated with verifiability (producing a proof of correct mixing operation), while offering additional assurances about the privacy of the messages, compared to a non-verifiable mix-net. With a marked mix-net, each mix-server adds an extra secret mark in each ciphertext, and the input ...