Biometric technologies are automated methods of verifying or recognizing the identity of a living person based on a physiological or behavioral characteristic. Biometrics technology is without doubt a more efficient way of authentication than the more common use of passwords, smart cards, or a combination of the two. Passwords also have expiration dates that require new assignment of passwords ...

Reasoning about credential-based systems such as SDSI, SPKI is one of today’s security challenges. The representation and reasoning problem for this (simple) public key infrastructure is challenging: we need to represent permissions, naming and identities of agents and complex naming constructions (Blackburn’s office-mate is M4M’s PC-Chair’s Colleague), then we need to reason about intervals of...

A multi-coupon (MC ) represents a collection of k coupons that a user can redeem to a vendor in exchange for a benefit (some good or service). Recently, Chen et al. [CEL07] proposed an unforgeable privacy-protecting multi-coupon scheme (MCS ), which discourages sharing of coupons through a property called unsplittability, where the coupons of a singleMC cannot be separately used by two users. P...

The validness of the expiration dates (validity period) that manufacturers provide on food product labels is a crucial food safety problem. Governments must study how to use their authority by implementing fair awards and punishments to prompt manufacturers into adopting rigorous considerations, such as the effect of adopting new storage methods for extending product validity periods on expecte...

We address the value of information (VOI) and value of centralized control (VCC) in the context of a two–echelon, serial supply chain with one retailer and one supplier that provides a single perishable product to consumers. Our analysis is relevant for managing slow moving perishable products with fixed lot sizes and expiration dates of a week or less. We evaluate two supply chain structures. ...

A great number of models have been proposed to investigate the deterioration inventory. However, most of models assume that a fixed physical quantity of items deteriorates over time, the quality of items does not decay before their expiration dates. In practice, the quality and physical quantity of many products, including fresh produce and foods, often deteriorate over time. The quality of an ...