The terms Hidden Web, Deep Web and Invisible Web describe those resources on the Web that are in some way unreachable by search engines, and are potentially unusable to other Web systems such as annotation services. These hidden resources make up a significant part of the current Web. We provide firm definitions of the ways in which information can be “hidden”, and discuss the challenges that f...

Previous research has characterized insight as the product of internal processes, and has thus investigated the cognitive and motivational processes that immediately precede it. In this research, however, we investigate whether insight can be catalyzed by a cultural artifact, an external object imbued with learned meaning. Specifically, we exposed participants to an illuminating lightbulb - an ...

drifted with a period different from 24 hr. More recent In most organisms, a circadian clock or clocks adjust experiments have exposed enucleated rodents to artifiphysiology to the varying demands of the solar cycle. If cial light stimuli at lower fluxes than sunlight but at irradithis “fine tuning” of physiology is toprovide any selective ances that would normally saturate phase-shifting readv...

SEE PAGE 1361 A rterial healing or vascular response after percutaneous coronary interventions (PCIs) describes a reparative mechanism to acute procedural injury attributed to balloon barotrauma and/or stent deployment itself (2,3). Early vascular responses after bare metal stent or drug-eluting stent (DES) placement are driven by fibrinand plateletrich thrombi depositions and migration of smoo...

T he fascinating biochemistry, genetics, and cell density-dependent regulation of bacterial bioluminescence provoke a challenging question. What good is it to bioluminescent bacteria? There may be no single answer to this seemingly simple question. However, two recent advances shed new light on the problem. First, studies of the symbiosis between the bioluminescent bacterium Vibrio fischeri and...

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New information illuminating the potential causes of obesity has been appearing rapidly, beginning with the cloning, by Friedman’s group, of the mouse obese (ob) gene, as reported in December 1994 [1]. Many reports on related topics and other molecular biological approaches to obesity have followed, particularly in the last several months. These reports help to form a picture that places regula...

Cellular heterogeneity is one of the key contributors to poor clinical outcome in glioblastoma (GBM). In this issue Lathia and colleagues report on the development of a novel mouse model where the GFAP-tva mouse harbors a Sox2-EGFP reporter to enable direct visualization of intratumoral cellular heterogeneity in a RCAS-PDGFb-driven GBM model. Cellular heterogeneity is associated with one of the...

— We review the observational status of the Supernova (SN)/GammaRay Burst (GRB) connection. In section 2 we provide a short summary of the observational properties of core-collapse SNe. In sections 3-6 we review the circumstantial evidences and the direct observations that support the existence of a deep connection between the death of massive stars and GRBs. Present data suggest that SNe assoc...

Rats raised from birth on a 7 A.M.:7 P.M. light cycle exhibited a circadian burst of shedding 1 1/2 hr after the scheduled onset of light. This rhythmic event persisted even after the animals had been placed in total darkness for up to 2 weeks. When animals were placed in constant light (LL) for more than 24 hr, the shedding peak was abolished. A period of darkness of at least 2 hr, ending at t...