This article discusses the provable security of an iterated hash function using a block cipher. It assumes the construction using the Matyas-Meyer-Oseas (MMO) scheme for the compression function and the Merkle-Damg̊ard with a permutation (MDP) for the domain extension transform. It is shown that this kind of hash function, MDPMMO, is indifferentiable from the variable-input-length random oracle ...

BACKGROUND AND OBJECTIVE The National Institute on Alcohol Abuse and Alcoholism developed an alcohol screening instrument for youth based on epidemiologic data. This study examines the concurrent validity of this instrument, expanded to include tobacco and drugs, among pediatric patients, as well as the acceptability of its self-administration on an iPad. METHODS Five hundred and twenty-five ...

EyA-inspired applications (to "Enhance Your Audience") allow for easy automated recordings in the classroom. They also allow for a fast sharing of large amount of educational contents. We discuss on our two prototype apps: AndrEyA and EyApp for mobile devices running Android OS and iOS, with the ultimate goal of facilitating the recoding of academic lectures by individual students themselves. W...

Type III secretion systems (T3SSs) are central virulence devices for many Gram-negative bacterial pathogens of humans, animals & plants. Upon physical contact with eukaryotic host cells, they translocate virulence-mediating proteins, known as effectors, into them during infection. T3SSs are gated from the outside by host-cell contact and from the inside via two cytoplasmic negative regulators, ...

In this tutorial, we will present the Human Interface Guidelines for both iPhone and iPad and offer hands-on experience in designing user interfaces for these devices. We will also discuss how to integrate the guidelines in higher education and give examples from our lecture on iPhone application development. The goal of the tutorial is to provide the participants with a basic understanding of ...

The development and distribution of mobile applications, or apps, designed for medical professionals and patients is quickly expanding, and within this group are apps designed specifically for orthopedic use. Currently, the most popular mobile apps are sponsored by private companies and focus on delivering device-specific information. If this trend toward the use of privately funded educational...

Many Gram-negative bacterial pathogens use type III secretion systems (T3SSs) for virulence. The Shigella T3SS consists of a hollow needle, made of MxiH and protruding from the bacterial surface, anchored in both bacterial membranes by multimeric protein rings. Atop the needle lies the tip complex (TC), formed by IpaD and IpaB. Upon physical contact with eukaryotic host cells, T3S is initiated ...

Teachers in tertiary education need new strategies to communicate with students of the net generation and to shape enticing educational experiences for them. The use of new approaches such as video-recorded lectures to communicate directly and individually with all students has been the preserve of technology-savvy educators. However, a recent technological advance – the Apple iPad – has the po...