In an identity-based proxy re-encryption scheme, a semi-trusted proxy can convert a ciphertext under Alice’s public identity into a ciphertext for Bob. The proxy does not know the secret key of Alice or Bob, and also does not know the plaintext during the conversion. In identity-based proxy re-encryption, the collusion of the proxy and a delegatee may result in the decryption of ciphertext for ...

This paper describes an experiment to extend the reach of the document-centric metaphors of computing to new physical and virtual objects in the workplace. By bringing these entities into the sphere of electronic documents, we leverage users’ knowledge and expectations about how documents work, and also leverage existing tools and applications that understand and manipulate documents. Being abl...

Introduction: Previously, 186Re and 188Re radioisotopes have been produced through appropriate activities, and each of them has been used for therapeutic applications. The 186Re and 188Re have unique properties, which make them proper for the treatment of  tumors in different sizes. The long-range 188Re, is suitabl...

Decisions are often based on predictions of the hedonic consequences of future events. We suggest that people make such predictions by imagining the event without temporal context (atemporal representation), assuming that their reaction to the event would be similar to their reaction to the imagined event (proxy reactions), and then considering how this reaction might change were the event disp...

The paper reports the results of a collapse test performed on a 6 m span timber-concrete composite beam with glued re-bar connection. The beam was first ramp loaded to failure, then some push-out tests were performed on specimens cut from the end of the beam in order to fully characterise the connection. During the tests all relevant quantities such as deflections, slips and strains were monito...

Adolescence is a period of increased risk experience and ever more often these occur online. The current study aims to investigate whether adolescents’ online and offline risk experiences are driven by the same general propensity to risks. Data from a representative study of N = 19,406 (50% girls) internet-using 11-16 year olds (M = 13.54, SD = 1.68) youth in Europe were subjected to the curren...

in this study, as for the re-casting, surface alloying and re-solidification layer of this alloys at the work piece level machining with wire electro discharge machining (wedm), changes of surface micro hardness with changes of operational parameters has been studied. therefore, study shows using surface alloying phenomena with the diffusion of wire material into the machined surface and select...