Analysing the effect of security on information quality dimensions

Information quality (IQ) has become a critical concern in today’s organisations. Although recent studies of information systems indicate an increasing importance of IQ, foremost research is still limited. Indeed, little is known about the impact of various design decisions on IQ. Recent research shows that security measures are increasingly important for any information system; however security measures are often introduced without considering the effect on IQ. At the same time, literature provides us with indications that trade-offs between various IQ dimensions exist. In this article we aim to investigate how security measures impact on different IQ dimensions. We carried out an experiment, which indicates that security measures have a significant effect on timeliness, whereas other dimensions are not particularly influenced. This observation led us to the proposal of costbenefit considerations, an important aspect for IQ management. The study is valuable for both research and practitioners. Further research studies can build on our observations and extend the research. Practitioners are provided with arguments for considering IQ trade-offs in relation to security measures

A Graph Theoretic Approach for Analysis and Design of Community Wireless Networks

Community Wireless Networks (CWNs) have recently emerged as a top priority for many communities world-wide to access the information highway and bridge the digital divide. There are many factors that contribute to the development and the sustainability of a successful CWN. These factors include traditional technical network parameters in addition to several social and economic parameters. This paper proposes a two-graph model for describing CWNs. The proposed graph model uses well established graph concepts to depict the key factors needed to be addressed when analyzing and designing CWN. We show how the two graphs; the social network graph and the wireless network graph are used to model CWN factors. We also show how the proposed model was used in a case study to support the Omaha Wireless project. We argue that having such a quantitative model represents a significant step towards better understanding of CWN and advancing this timely research area

A Content-Based Pricing Model for Municipal and Community Wireless Networks

The escalation of municipal and community wireless networks (CWNs) has raised many questions about the most suitable business model, funding instrument, and service pricing policy for a specific community. Unlike traditional Internet service providers, these networks provide wireless Internet access for the purpose of boosting the social and economic development of the community at large. Therefore, such projects need customized business models and pricing policies in order to achieve these objectives. We propose a content-based pricing model where the price of wireless applications is an increasing function of the used bandwidth and a decreasing function of the provided packet delay. We used the Opnet simulation tool to validate the proposed pricing model. The simulation results show that network operators may charge users only for audio and video applications because of the high bandwidth they use compared to data applications. The proposed pricing solution considers the social and economic objectives of CWNs

Analyzing community contributions to the development of community wireless networks

complexities of the case at hand which turn out to be relevant for the queuing strategy decision. W

An Efficient Accounting Architecture for QoS-aware Internet Traffic

The widespread usage of Internet-based applications and the large diversity of these applications, particularly in terms of Quality of Service (QoS) requirements, necessitate developing a QoS-aware Internet accounting architecture. Developing such a architecture has grown to be increasingly essential for service pricing, cost recovery, resource management, and network analysis. This paper proposes an efficient Internet accounting architecture that employs various packet, flow, link, and end-to-end QoS parameters in a way that allows for a simple and practical implementation. With the help of the proposed architecture, a number of eBusiness applications and advanced network-tracking techniques can be efficiently developed

The use of pararectus approach for Type 3B Paprosky acetabular defect with intrapelvic cup migration. Case report

Case: A case of Type 3B Paprosky acetabular defect with intrapelvic cup migration where anterior column plating and cup extraction was done through an abdominal pararectus approach. A male patient 63 years old reported progressive pain and walking disability after five years of cementless THR for right hip AVN. CT pelvis showed loose intrapelvic migrated cup, extensive osteolytic acetabular defects, and pelvic discontinuity. Pararectus approach was used to remove the cup and the head with concomitant plating of the anterior column Conclusion: The pararectus approach is a valid option for intrapelvic cup extraction and pelvic discontinuity fixation