Many theoretical PIR (Private Information Retrieval) constructions have been proposed in the past years. Though information theoretically secure, most of them are impractical to deploy due to the prohibitively high communication and computation complexity. The recent trend in outsourcing databases fuels the research on practical PIR schemes. In this paper, we propose a new PIR system by making ...

We propose a private information retrieval (PIR) protocol for distributed storage systems (DSSs) with noncolluding nodes where data is stored using an arbitrary linear code. An expression for the PIR rate, i.e., the ratio of the amount of retrieved stored data per unit of downloaded data, is derived, and a necessary and a sufficient condition for codes to achieve the PIR capacity are given. The...

Paired immunoglobulin-like receptor B (Pir-B) was an inhibitory receptor expressed on the surfaces of dendritic cells (DCs). Pir-B inhibit T helper (Th) 1 response and induce Th2 cell differentiation, leading to the imbalance of Th1/Th2 cells. However, the role and potential mechanism of Pir-B on the balance of Th17/regulatory T cells (Tregs) is still largely unknown in lung cancer murine model...

PIWI-associated RNAs (piRNAs or piRs), a new-found class of small non-coding RNAs, which are mainly expressed in germline cells and partly in somatic lines, have a vital role in carcinogenesis by maintaining genomic integrity and regulation of epigenetics. The previous studies have confirmed that the expression of piR-651 is upregulated in several cancer tissue and cell lines, including lung ca...

Personalized Information Retrieval systems (PIR) are of great need now a day. With growing size of database & requirement of precise data, PIR are of great importance. But this area is still being under research for the best methodology of searching. The PIR system instead of providing irrelevant data along with relevant one, provide us with just the possible relevant data matching our need & r...

In this HotPETs session we would like to present an implementation of a singledatabase Private Information Retrieval (PIR) scheme that can process a database at 2 Gbits/s using a commodity Graphics Processing Unit (GPU). This session will have three goals : – Dispel the idea that single-database PIR schemes are unusable because too expensive from a computational point of view – Provide a tool t...

Rapid intravenous infusion of saline is known to suppress reabsorption of sodium and water in the proximal tubule. It has previously been shown that this suppression is accompanied by two changes which in combination might account for the over-all decrease in reabsorption: a reduction in the intrinsic reabsorptive capacity of the tubular epithelium (C/pir(2)) and a reduction in the ratio betwee...

Recent research results on tree-based Oblivious RAM by Shi et al. [15] obtain communication complexity of O(l · log(N)) in the worst-case for an N -capacity storage with blocks size l. The individual nodes in the tree, however, are constructed using traditional ORAMs which have worst-case communication complexity linear in their capacity and block size. PIR protocols are able to provide better ...

BACKGROUND Injury is a major public health concern, particularly for Canadians living in Arctic regions where the harsh physical and social conditions pose additional challenges. Surveillance data collected over the past 2 decades through the Canadian Hospitals Injury Reporting and Prevention Program (CHIRPP) provide insights into the burden of injuries in certain parts of Canada. OBJECTIVES ...

Periodic exchange of situational information (beacons) is at the basis of most active safety applications in vehicular environments, which explains recent interest in measurement-based characterization of beaconing performance. However, existing studies are focused on measuring a specific link-level performance parameter, namely, the packet delivery rate (PDR). While PDR is an important perform...