Secret sharing schemes with general monotone access structures have been widely discussed in the literature. But in some scenarios, non-monotone access structures may have more practical significance. In this paper, we shed a new light on secret sharing schemes realizing general (not necessarily monotone) access structures. Based on an attack model for secret sharing schemes with general access...

Context and Structure in Automated Full-Text Information Access

Purpose – The purpose of this article is to discuss open access to scholarly full-text documents. Design/methodology/approach – Discusses open access to scholarly full-text documents. Findings – The paper shows that while open access archives are good for the majority, for publishers, editors and authors, open access articles can substantially increase their impact, and the impact factor for th...

This Journal and the Public Library of Science (PLoS) at large are standard bearers of the full potential offered through open access publication, but what of you, the reader? For most of you, open access may imply free access to read the journals, but nothing more. There is a far greater potential, but, up to now, little to point to that highlights its tangible benefits. We would argue that, a...

Full-duplex (FD) has emerged as a disruptive communications paradigm for enhancing the achievable spectral efficiency (SE), thanks to the recent major breakthroughs in self-interference (SI) mitigation. The FD versus half-duplex (HD) SE gain, in cellular networks, is however largely limited by the mutual-interference (MI) between the downlink (DL) and the uplink (UL). A potential remedy for tac...

In order to support experimentation with fullduplex (FD) wireless, we recently integrated an open-access FD transceiver in the ORBIT testbed [1]. In this report, we present the design and implementation of the FD transceiver and interfaces, and provide examples and guidelines for experimentation. In particular, an ORBIT node with a National Instruments (NI)/Ettus Research Universal Software Rad...

As previously announced in mid-2010, Veterinary Research became an Open Access (OA) journal, published with BioMed Central, on 1 January 2011. OA is defined as free, immediate, permanent and fulltext online access for any user to peer reviewed research. Authors retain the copyright for their articles and grant anyone the right to copy, distribute or display the work provided that it is correctl...

We address the issue of providing topic driven access to full text documents. The methodology we propose is a combination of topic segmentation and information retrieval techniques. By segmenting the text into topic driven segments, we obtain small and coherent documents that can be used in two ways: as a basis for automatically generating hypertext links, and as a visualization aid for the rea...

There are many laws which require sellers to disclose private information about the quality of their products. But the theoretical justification for these laws is not obvious: economic theory predicts that a seller will voluntarily disclose such quality information, however unfavorable, as long as it is costless to do so. Here we show that competitive pressures between firms may undermine this ...

The emerging role of thumbnail images in the selection of images for display from large image databases and via network access requires that the characteristics of thumbnails be seriously studied. We introduce a measure of effective compression Ceff(p) that is a function of the probability p that thumbnail access will be followed by the display of a full-scale image. For credible values of p, w...