We investigated the relationship between a number of patient and management variables and mortality after surgery for fracture of the hip. Data relating to 18,817 patients were obtained from the Scottish Hip Fracture Audit database. We divided variables into two categories, depending on whether they were case-mix (age; gender; fracture type; pre-fracture residence; pre-fracture mobility and ASA...

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...

“MIX-net” systems protect the privacy of participants by clouding together their transactions through cascades of third parties. Reliability and trust are therefore open issues in this literature and limit the applicability of these systems. This paper discusses how the MIX approach can be adapted to put the user at the center of the protocol and in control of it, so that each participant can t...

Abstract: Bottom ash is a hazardous by-product from coal based thermal power plants. In this study fine aggregate in concrete mix has been replaced with bottom ash and glass fibre is additionally used to enhance the strength characteristics of concrete. The concrete mix design is done for M30 grade concrete. The mix is prepared for different combinations of 0%, 30%, 40%, 50% and 100% of replace...

Effluents from wastewater treatment plants contain a mixture of estrogens (MIX: 17β-estradiol: E2, estrone: E1, estriol: E3 and 17α-ethinylestradiol EE2). High doses of estrogens have been shown to negatively impact fetal testicular development, but the impact of low doses of estrogens in mixture have yet to be elucidated. Using an organ culture system in which embryonic 15.5 day-old rat testes...

One of the most difficult problems in health care policy is adjusting payment to activity. Particularly little is known about how resources are allocated to departments of geriatric care. To investigate whether departments of geriatric medicine in Stockholm, Sweden relate their costs to case-mix, one of the most well-known case-mix systems for geriatric care, the Resource Utilization Groups, ve...

In this paper we present a novel, publicly verifiable mixing scheme which has everlasting privacy towards observers: all the information published on the bulletin board by the mixes (audit information etc)̇ reveals no information about the identity of any of the messages published. The correctness of the mixing process is statistical: even if all authorities conspire, they cannot change the cont...

OBJECTIVE Built environment attributes are associated with walking but little is known about how the impact of walking campaigns varies across different environments. The objective of this study was to compare the impact of a campaign on changes in walking between respondents with a high versus low mix of local destinations. METHODS Pre- and post-campaign data from a quasi-experimental study ...