The evaluation of a retrieval system has always been the focus of research. Most of the retrieval systems seem to be more efficient for precision oriented documents than recall oriented documents since there is a difference between both the recall and precision oriented documents. Therefore, a system that is efficient for the retrieval of precision oriented documents does not need to be good fo...

Client-side deduplication is a very effective mechanism to reduce both storage and communication cost in cloud storage service. Halevi et al. (CCS ’11) discovered security vulnerability in existing implementation of client-side deduplication and proposed a cryptographic primitive called “proofs of ownership” (PoW) as a countermeasure. In a proof of ownership scheme, any owner of the same file c...

Cloud storage allows users to store their data in a remote server to get rid of expensive local storage and management costs and then access data of interest anytime anywhere. A number of solutions have been proposed to tackle the verification of remote data integrity and retrievability in cloud storage systems. Most of existing schemes, however, do not support efficient data dynamics and/or su...

STATEMENT OF PROBLEM The cone-screw abutment has been shown to diminish micromovement by reducing the burden of component loosening and fracture. However, anecdotal concern for cold welding of cone-screw joints in implant design has been identified as a potential source for lack of retrievability. PURPOSE This comparative study evaluated the loosening torque, as a percentage of tightening tor...

Bitcoin [1] is the first successful decentralized global digital cash system. Usefulness of the mining process requiring a lot of computational resources to be wasted, though, remains disputable. One of possible alternatives for useful Proof-of-Work schemes, Permacoin [2], is using non-interactive proofs of a static dataset retrievability thus providing a mechanism to store a huge dataset being...

Proofs-of-Retrievability enables a client to store his data on a cloud server so that he executes an efficient auditing protocol to check that the server possesses all of his data in the future. During an audit, the server must maintain full knowledge of the client’s data to pass, even though only a few blocks of the data need to be accessed. Since the first work by Juels and Kaliski, many PoR ...

In this paper, we will present several new results in finite and countable dimensional separable real Hilbert space phase retrieval norm by fusion frames. We characterize of for frames similar vectors show that only one direction holds vector case, every tight frame can do retrieval. Also the unitary operators preserve (norm) retrievability make a detailed study when hyperplanes general result ...

Cloud storage allows clients to store a large amount of data with the help of storage service providers (SSPs). Proof-of-retrievability(POR) protocols allow one server to prove to a verifier the availability of data stored by some client. Shacham et al. presented POR protocols based on homomorphic authenticators and proved security of their schemes under a stronger security model, which require...

PURPOSE To evaluate retrospectively the safety and retrievability of the Celect IVC filter. MATERIALS AND METHODS All patients undergoing Celect filter placement and retrieval during the period 2007-2012 were assessed for complications and retrievability. RESULTS Of 620 patients who underwent Celect filter placement, 120 presented for removal. The indwelling time in these patients was 158.1...