We deal with the problem of storing a set of K elements that are taken from a large universe of size N , such that membership in the set can be determined with high probability by looking at just one bit of the representation. Buhrman et al. show an explicit construction with about K2 logN storing bits. We show an explicit construction with about K1+o(1) storing bits, that gets closer to the op...

Abstract A 43-year-old woman presented with a 3-year history of gradually enlarging lesion on the right upper chest. Her comorbidities included ankylosing spondylitis and recurrent anterior uveitis, she was taking no regular medications. She had systemic symptoms. initially seen by breast team, who organized an ultrasound that showed chronic inflammation, biopsy granulomatous inflammatory tissu...

We assess how firms' incentives to operate and invest in energy storage depend on the market structure. For this purpose, we characterize equilibrium outcomes allowing for power and/or production, as well vertical integration between production. Market reduces overall efficiency through two channels: It induces an inefficient use of facilities, it distorts investment incentives. The worst outco...

Over the last decade, the Internet has undergone a profound change. Thanks to Web 2.0 technologies, the Internet has become a platform where everybody can participate and provide their own personal information and experiences. Ontologies were designed in an effort to sort and categorize all sorts of information. In this paper, an automatized method for retrieving the subjective Internet users i...

We outline Powl, an opensource, web-based semantic web development platform for PHP. It may be used as a foundational framework for semantic web applications. Powl allows parsing, storing, querying, manipulating, versioning, serving and serializing RDF-S and OWL knowledge bases in a collaborative web enabled environment. Detailed project information, a demonstration and complete source code of ...

Food-storing corvids are able to remember which individual saw them store food, and take preventive action that is tailored to that particular competitor's knowledge. This raises the question of whether abilities like 'theory of mind' have arisen independently more than once in evolution.