Rehab Alnemr

• PhD
• Consultant at Independant Consultant United Kingdom

As cloud computing becomes a widely used technology, it is essential to provide mechanisms and tools that enable trust about how personal data is dealt with by cloud providers. The Cloud Accountability (A4Cloud) project tries to solve the problem of ensuring trust in the cloud by providing tools that support the process of achieving accountability....

We propose a data protection impact assessment (DPIA) method based on successive questionnaires for an initial screening and for a full screening for a given project. These were tailored to satisfy the needs of Small and Medium Enterprises (SMEs) that intend to process personal data in the cloud. The approach is based on legal and socio-economic an...

Cloud computing is becoming a key IT infrastructure technology being adopted progressively by companies and users. Still, there are issues and uncertainties surrounding its adoption, such as security and how users data is dealt with that require attention from developers, researchers, providers and users. The A4Cloud project tries to help solving t...

There is a pressing need to make the differences between cloud offerings more transparent to cloud customers. Examples of properties that vary across cloud service providers (and that are reflected in cloud contracts) include subcontracting, location of data centres, use restriction, applicable law, data backup, encryption, remedies, storage period...

Reputation systems aim to provide a mechanism for establishing trust for online interactions attempting to mimic their real-world counterparts. Reputation-based approaches depend on the users local experiences and feedback to create a soft measure for trust decision. They use various clues and past experience to decide on taking the risk of dealing...

Reputation has been explored in diverse disciplines such as artificial intelligence, electronic commerce, peer-to-peer network, and multi-agent systems. Recently it has been a vital component for ensuring trust in web services and service oriented architecture domains. In this paper, we show details about our context-aware reputation framework. The...

Web users while collaborating over social networks and micro-blogging services also contribute to news coverage worldwide. News feeds come from mainstream media as well as from social networks. Often feeds from social networks are more up-to-date and, for user's view, more credible than those that come from mainstream media. But the overwhelming am...

Reputation has been explored in diverse disciplines such as artificial intelligence, electronic commerce, peer-to-peer network, and multi-agent systems. Recently it has been a vital component for ensuring trust in web services and service oriented architectures domains. Although there are several studies on reputation systems as well as reputation...

For several years online reputation systems have been evolving in an attempt to mimic their real-world counterparts. Rating in online communities comes in many forms such as numbers, stars, scales, etc.. The underlying aggregation or computation methods varies according to the community's information sources and perception of reputation. However, t...

This paper discusses the meaning and the role of Trust and Reputation in Internet-of-Service and e-Commerce environments following a comparative case study. Both environments represent paradigms through which the Internet is seen as a huge infrastructure where electronic services or real products are traded on. In comparison to electronic commerce,...

One of the critical success factors of event-driven systems is the capability of detecting complex events from simple and ordinary event notifications. Complex events which trigger or terminate actionable situations can be inferred from large event clouds or event streams based on their event instance sequence, their syntax and semantics. Using sem...

Reputation is a complex concept that has a major role in fields like social sciences, economics as well as computer science. Representing it as a simple form of property-rating or a vector of ratings strips it from its original notion and postulation. It does not also facilitate the derivation of meaningful conclusions from it. This paper presents...

Cloud Computing as a service on demand architecture has become a topic of interest in the last few years. The outsourcing of duties and infrastructure to external parties enables new services to be established quickly, scaled on demand, and with low financial risk. Cloud storage enables organizations to manage their data with low operational expens...

Cloud Computing as a service on demand architecture has become a topic of interest in the last few years. The outsourcing of duties and infrastructure to external parties enables new services to be established quickly and with low financial risk. These services also can be scaled on demand. Nevertheless, several issues such as security and legality...

In this chapter, the authors discuss innovations associated with the transition from the circuit-switched public telephone network to IP packet-switched networks for the provision of voice services by focusing on research findings in the area of quality of service (QoS). To give a meaningful answer on how this transition affects the telecommunicati...

Business often develop proprietary reputation systems for their community, with the side effect of locking users into that service if they wish to maintain their reputation (Bonawitz, Chandrasekhar, & Viana, 2004). Reputation is used in multi-agent models like e-commerce, and distributed computation and reasoning. Currently, virtual communities are...

For business workflow automation in a service-enriched environment such as a grid or a cloud, services scattered across heterogeneous Virtual Organizations (VOs) can be aggregated in a producer-consumer manner, building hierarchical structures of added value. In order to preserve the supply chain, the Service Level Agreements (SLAs) corresponding t...

In this paper we examine the problem of rich information environments and the need to narrow the agents attention to what is important for them to interact and later to evaluate and transfer reputation values, using attention allocation technique (AA). We also argue that this cannot be done without the aid of service oriented architecture (SOA). Re...

Reputation is a crucial factor in trust and thus in Web communities. Trust strategies may involve investigating user reputation or directly using transitive reputation to form the Web of Trust. We suggest an approach that takes advantage of both strategies without increasing the cost of investigation. Several systems nowadays form what we call ldqu...

Online Reputation management systems compute, manage, and provide reputation about entities which act on the Web. An im-portant research question is how such a reputation management system can be build for the Semantic Web. In this paper we contribute with a reputation management system based on distributed rule agents, which uses Semantic Web rule...