The ring signature allows a signer to leak secrets anonymously, without the risk of identity escrow. At the same time, the ring signature provides great flexibility: No group manager, no special setup, and the dynamics of group choice. The ring signature is, however, vulnerable to malicious or irresponsible signers in some applications, because of its anonymity. In this paper, we propose a trac...

The information presented in this article is intended to make the reader aware of the most current research on the topic of flexibility and to make some practical suggestions for planning effective programs for developing flexibility in athletes. Though additional research needs to be done, we have enough knowledge to plan sound programs for reducing the incidence of injury and for promoting op...

This article proposes a multi-agent simulation model to examine how different operational environments and incentive mechanisms affect the collective performance of complex humanitarian response systems. Using the UN Humanitarian Response Depot (UNHRD) system as an example, a stylized model of one service provider, two member organizations and multiple humanitarian crises is developed to illust...

flexibility as an ability to respond to changing circumstances is one of the vital characteristics of the natural and built environment. during the contemporary era, diversity of methods relating the architectural flexibility execution are suggested. but along with contemporary conceptual approaches toward pluralism and uncertainty, it seems that the multiplicity of approaches toward flexibilit...

background methamphetamine (ma) is a highly addictive stimulant which has destructive effects. there is also evidence that methamphetamine use in some females, partly is due to their desire to lose weight. the purpose of this study was to determine the association between family flexibility, food preoccupation and body image among crystal abuser women. objectives this study tried to evaluate wh...

Engineering synthetic hydrogels on a molecular basis to introduce natural features that are important in instructing cell behavior is becoming increasingly crucial in biomaterial-based approaches for regenerative medicine and in cell biology to study cell-matrix interactions in three-dimensions (3D). Here, we used collagen gels and exploited the design flexibility of the biological, biochemical...

The primary result in this paper is a set of O(n) time algorithms to determine whether a speci ed real, symmetric matrix is a member of any of several closely related classes: the MMA-matrices; the inverse MMA-matrices; the strictly positive, positive de nite matrices whose eigenvectors form a Soules basis; and the strictly ultrametric matrices. When the class membership question is answered in...