The goal of Private Information Retrieval (PIR) is for a client to query a database in such a way that no one, including the database operator, can determine any information about the desired database record. Many PIR schemes have been developed, but are generally not deemed fast enough for client needs in today’s fast-paced world or do not scale well to large databases. We implement a parallel...

Cloud computing platforms allow application providers to rent server capacity to run hosted applications and to dynamically vary the rented capacity to match demand. Today’s cloud platforms offer a plethora of different server configurations for rent and price them differently on a cost-per-core basis. Furthermore, cloud platforms support different replication and migration mechanisms to suppor...

D espite cloud computing’s enormous popularity and high profile, many companies have been dissatisfied because they haven’t found what they want in a single cloud architecture. Private clouds, which organizations run internally, are secure, accessible without Internet availability, and customizable. Public clouds run over the Internet and are scalable, less costly, and simple to adopt and use. ...

Cloud-Speichersysteme ermöglichen es, Daten kostengünstig zu speichern und ortsunabhängig auf die gespeicherten Daten zuzugreifen. Einer Nutzung solcher Systeme durch die öffentliche Verwaltung und durch private Unternehmen stehen bisher oft datenschutzrechtliche Regelungen entgegen. Die vorliegende Arbeit analysiert die juristischen Anforderungen bei der Verwendung von Cloud-Speichersystemen u...

Resource allocation mechanism plays a critical role towards the success of cloud computing. Existing allocation mechanisms in public cloud is unsuitable to private IaaS cloud because they either cannot maximize the sum of users value, or provide no service guarantee. For overcome these shortcomings, we propose a novel online, model-free mechanism that makes different allocations for flexible jo...

We have read the paper by Wang and Zhang. We are pleased to see that other authors further illustrate and also find nice properties for an evaluation tool that we first used more than ten years ago, presented at PAGE in 2000 and published extensively first in 2006. However we disagree with some of the conclusions made by the authors, and we feel that an important reference should have been incl...

This paper investigates, in a first stage, some methods for the automatic acquisition of verb-particle constructions (VPCs) taking into account their statistical properties and some regular patterns found in productive combinations of verbs and particles. Given the limited coverage provided by lexical resources, such as dictionaries, and the constantly growing number of VPCs, possible ways of a...

Verb Particle Constructions (VPCs) are flexible in nature and hence quite complex and challenging to handle. As a consequence, VPCs generate a lot of interest for NLP community. Despite their prevalence in English they are not handled very well, and hence often result in poor quality of translation. In this paper we investigate VPCs for English to Hindi translation. An English VPC can have diff...

In modern networks, advanced and novel concepts are being deployed for the provision of protected services to the end user. Amongst these, the self-healing concept refers to the capability of the network to restore services in a distributed way without any immediate operator intervention, this in order to assure delivery of constant quality services under fault conditions. In this paper, the Se...

As one of the first worldwide initiatives provisioning ICT (Information and Communication Technologies) services entirely based on renewable energy such as solar, wind and hydroelectricity across Canada and around the world, the GreenStar Network (GSN) is developed to dynamically transport user services to be processed in data centers built in proximity to green energy sources, reducing GHG (Gr...