New Anonymity Notions for Identity-Based Encryption

The original publication is available at www.springerlink.comInternational audienceIdentity-based encryption is a very convenient tool to avoid key management. Recipient-privacy is also a major concern nowadays. To combine both, anonymous identity-based encryption has been proposed. This paper extends this notion to stronger adversaries (the authority itself). We discuss this new notion, together with a new kind of non-malleability with respect to the identity, for several existing schemes. Inter- estingly enough, such a new anonymity property has an independent application to password-authenticated key exchange. We thus come up with a new generic framework for password-authenticated key exchange, and a concrete construction based on pairings

A Disassembly Line Design Approach for Management of End-of-Life Product Quality

Part 9: Circular EconomyInternational audienc

Integrated Procurement–Disassembly Problem

Part 1: Knowledge-Based SustainabilityInternational audienceThis paper proposes a novel problem called integrated pro- curement–disassembly problem. The problem combines vehicle routing problem and disassembly line balancing problem for collecting and dis- assembling End-of-Life (EOL) products, respectively. The integration of those problems is motivated by the necessity to reduce total cost in reverse supply chain context. After collecting the EOL products from suppliers, the disassembly process begins to release the demanded parts. The objective function aims to minimize the total cost consisting product collection and opening disassembly workstations. The constraints consider vehicle routing problem to supply the disassembly line with EOL products, disassembly line and balancing inventory coordinating those problems. The decision variables include trips sequences associated to collect the products, disassembly task assignment into workstations, and the inventory level

Kinetic of sugar consumption and ethanol production on very high gravity fermentation from syrup of dates by- products (Phoenix dactylifera L.) by using Saccharomyces cerevisiae, Candida pelliculosa and Zygosaccharomyces rouxii

International audienceThree yeasts, Saccharomyces cerevisiae, Zygosaccharomyces rouxii and Candida pelliculosa, were tested for ethanol production on dates'syrup. In batch fermentation, the ethanol concentration depended on the initial sugar concentration and the yeast strain. For an initial sugar concentration of 17.4°Brix, maximum ethanol concentration was 63 g/L during S. cerevisiae growth, higher than the amounts achieved during Z. rouxii and C. pelliculosa growth, 33 g/L and 41 g/L respectively. On 35.8°Brix initial sugar amount, only Z. rouxii was able to grow, resulting in 50 g/L ethanol production, showing an inhibitory effect on S.cerevisae and C. Pelliculosa due to the osmotic stress resulting from the high sugar concentration