We present a system for efficient meta-data indexed querying of XML documents. Given the diversity of the information available in XML, it is very useful to annotate XML data with a wide variety of meta-data, such as quality and security assessments. We address the meta-data indexing problem of efficiently identifying the XML elements along a location step in an XPath query, that satisfy meta-d...

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 ...

Box MIX and MIXAL are available on the UCSD B6700; although, according to Ken Bowles, they are not currently being handled as fully supported products, and there may be some remaining bugs in the systems. However, MIX and MIXAL are available for network users, and Ken says they will be happy to receive notification of any errors found in the MIX and MIXAL and will attempt to get corrections mad...

Animal agriculture is vulnerable to both intentional and unintentional biological threats. Outbreaks, especially intentional attacks, could cause enormous consequences extending well beyond agriculture. Nations, including the USA, are consolidating and coordinating efforts to protect against these biological threats. The efforts employed largely fall into the categories of ex ante prevention/pr...

As the Service-oriented architecture paradigm has become ever more popular, different standardization efforts have been proposed by various consortia to enable interaction among heterogeneous environments through this paradigm. This chapter will overview the most prevalent of these SOA Efforts. It will first show how technical services can be described, how they can interact with each other and...

Protein secretion systems that mediate interbacterial competition secret a wide repertoire of antibacterial toxins. A major player in these competitions is the newly discovered bacterial type VI secretion system (T6SS). We recently found that a subset of polymorphic MIX-effectors, which are a widespread class of effectors secreted by T6SSs, are horizontally shared between marine bacteria and ar...

The theory of constraints is an approach to production planning and control that emphasizes on the constraints to increase throughput by effectively managing constraint resources. One application in theory of constraints is product mix decision. Product mix influences the performance measures in multi-product manufacturing system. This paper presents an alternative approach by using of goal pro...

This paper introduces the concept of “revocable unlinkability” for unlinkable anonymous signatures and proposes a generalized scheme that modifies the signatures to include revocable unlinkability. Revocable unlinkability provides a condition in which multiple messages signed using an unlinkable anonymous signature are unlinkable for anyone except the unlinkability revocation manager. Noteworth...

A MIX net takes a list of ciphertexts (c1, · · · , cN ) and outputs a permuted list of the plaintexts (m1, · · · ,mN ) without revealing the relationship between (c1, · · · , cN ) and (m1, · · · ,mN ). This paper first shows that the Jakobsson’s MIX net of Eurocrypt’98, which was believed to be resilient and very efficient, is broken. We next propose an efficient t-resilient MIX net with O(t) s...