Orthogonal Frequency Division Multiplexing Based Air Interfaces and Multiple Input Multiple Output Techniques in Cooperative Satellite Communications for 4th Generation Mobile Systems

Recently, wireless network technology has grown at such a pace that scientific research has become a practical reality in a very short time span. One mobile system that features high data rates and open network architecture is 4G. Currently, the research community and industry, in the field of wireless networks, are working on possible choices for solutions in the 4G system. The researcher considers one of the most important characteristics of future 4G mobile systems the ability to guarantee reliable communications at high data rates, in addition to high efficiency in the spectrum usage. On mobile wireless communication networks, one important factor is the coverage of large geographical areas. In 4G systems, a hybrid satellite/terrestrial network is crucial to providing users with coverage wherever needed. Subscribers thus require a reliable satellite link to access their services when they are in remote locations where a terrestrial infrastructure is unavailable. The results show that good modulation and access technique are also required in order to transmit high data rates over satellite links to mobile users. The dissertation proposes the use of OFDM (Orthogonal Frequency Multiple Access) for the satellite link by increasing the time diversity. This technique will allow for an increase of the data rate, as primarily required by multimedia applications, and will also optimally use the available bandwidth. In addition, this dissertation approaches the use of Cooperative Satellite Communications for hybrid satellite/terrestrial networks. By using this technique, the satellite coverage can be extended to areas where there is no direct link to the satellite. The issue of Cooperative Satellite Communications is solved through a new algorithm that forwards the received data from the fixed node to the mobile node. This algorithm is very efficient because it does not allow unnecessary transmissions and is based on signal to noise ratio (SNR) measures.

Information technology and social cohesion : a tale of two villages

Acknowledgements: This research was carried out through a grant from the EPSRC: Communities and Cultures Network+ EP/K003585 and forms part of the dot.rural Rural Digital Economy Research Hub EP/G066051

Information technology and social cohesion : a tale of two villages

Acknowledgements: This research was carried out through a grant from the EPSRC: Communities and Cultures Network+ EP/K003585 and forms part of the dot.rural Rural Digital Economy Research Hub EP/G066051

Exploring the rural passenger experience, information needs and decision making during public transport disruption

Acknowledgements The research described here is supported by the award made by the RCUK Digital Economy programme to the dot.rural Digital Economy Research Hub; award reference: EP/G066051/1. Further, we would like to acknowledge the RCUK research grant EP/J000604/2.

Using Information, Metrics and Developing Business Cases for L&D

The second theme of this book concerns L&D’s ‘Contributions’, specifically how L&D professionals articulate, communicate and demonstrate value that it brings to the organization. Specifically, Chapter 3, titled ‘Using information, metrics and developing business cases for L&D’, discusses how L&D professionals can do this using the business case as a vehicle. The business case is a tool that L&D professionals can use to show how new L&D initiatives can benefit the organization and its stakeholders. The value of such benefit can be ‘articulated’ quantitatively and qualitatively. Chapter 3 adopts a holistic approach in developing a business case. L&D professionals must be competently knowledgeable about accounting and finance but without the need to be experts – as their expertise lies in L&D. Therefore to successfully complete a business case, L&D professionals need to form teams comprising the right members (depending on what the business case is about). The political realities that are associated with the development of a business case can be important considerations. How well L&D is able to ‘sell’ a business case depends on how well it is framed, usually either as a problem or opportunity. We then discuss the information, data and metrics required to build a typical business case, specifically in terms of identifying the benefits and costs. The chapter concludes with some suggestions on how the findings from the business case can be presented in infographics-inspired form.

SMEs Attitudes to “Information Assurance” and Consequences for the Digital Single Market

It is now generally accepted that cyber crime represents a big threat to organisations, and that they need to take appropriate action to protect their valuable information assets. However, current research shows that, although small businesses understand that they are potentially vulnerable, many are still not taking sufficient action to counteract the threat. Last year, the authors sought, through a more generalised but categorised attitudinal study, to explore the reasons why smaller SMEs in particular were reluctant to engage with accepted principles for protecting their data. The results showed that SMEs understood many of the issues. They were prepared to spend more but were particularly suspicious about spending on information assurance. The authors’ current research again focuses on SME attitudes but this time the survey asks only questions directly relating to information assurance and the standards available, in an attempt to try to understand exactly what is causing them to shy away from getting the badge or certificate that would demonstrate to customers and business partners that they take cyber security seriously. As with last year’s study, the results and analysis provide useful pointers towards the broader business environment changes that might cause SMEs to be more interested in working towards an appropriate cyber security standard.

How can geographical information systems and spatial analysis inform a response to prescription opioid misuse? a discussion in the context of existing literature

Biological Principles of Information Storage and Retrieval

Published in Electronic Handling of Information: Testing and Evaluation, Kent, Taubee, Beltzer, and Goldstein (ed.), Academic Press, London(1967), pp. 123–147.

Using technology to overcome the tyranny of space: information provision and wayfinding.

Urban wayfinding technology offers many possibilities by which older people and mobility-impaired users can overcome the barriers encountered on every-day journeys in the built environment. Previous work has highlighted the extent to which personal mobility and independence are significant determinants of the quality of life amongst both elderly and visually impaired groups. The paper outlines the development of the auditory location finder (ALF), which is a beacon-based local information system designed to enhance the wayfinding activities of these, and potentially other, user-groups in the community. The proposed system provides the user with an audio message, which is obtained on request via a small portable hand unit. The messages inform the user of their whereabouts and give information about the area that they are currently in. The development of the device involves issues such as message content and structure, route choice, orientation, landmarks, clues and the extent of user reliance on technology. Preliminary trials have been carried out in a UK city and have obtained initial user feedback to help underpin the technological development of the device and its potential application. The paper concludes by outlining the importance of new urban technology and the way in which such local information systems can potentially contribute to overcoming particular patterns of exclusion experienced by mobility-impaired groups, such as the visually impaired

INFORMATION, LIBRARIES AND DEVELOPMENT Address at the Inauguration of-Manifests Central American Seminar on IFLA / Unesco Public Libraries, School Libraries and the Internet ‖. 26 to 29 March 2007

It is a matter of pride that Costa Rica and the National University, both with extensive experience in the development of library we are the headquarters for the first time, an event that brings together three different activities on this theme: the Central American Seminar, Workshops and Standing Committee of the International Federation of Library Associations and Institutions, which will strengthen the monitoring and Manifestos on Public Libraries, Schools and Internet IFLA-UNESCO. Thank you very much to all of you for allowing us this honor and a double thanks to the comrades of the UNA university who took the initiative and made this opportunity possible.

National Information Networks and International

We can categorically state that the information is the main ingredient of the culture of a people. Defining information as a set of processed data that are needed, have value and meaning for individuals and for developing countries where data is any fact.The information could also be considered as an international resource indispensable. The scientific and technological development is a consequence of the relevant information is handled. The "heap" is a source of information that libraries must consider and integrate them because they give rise to more information and new technology. The need for improved information systems in recent years, it has become critical because the information data grows in quantity and complexity of organization. Consequently, some libraries have tried to coordinate functions, redistribute resources, identify needs and work together to give easier access to information

Information Analysis and Databases

Means to automate the fact replace the man in their job functions for a man and machines automatic mechanism, ie documentary specialists in computer and computers are the cornerstone of any modern system of documentation and information. From this point of view immediately raises the problem of deciding what resources should be applied to solve the specific problem in each specific case. We will not let alone to propose quick fixes or recipes in order to decide what to do in any case. The solution depends on repeat for each particular problem. What we want is to move some points that can serve as a basis for reflection to help find the best solution possible, once the problem is defined correctly. The first thing to do before starting any automated system project is to define exactly the domain you want to cover and assess with greater precision possible importance.

INFORMATION PRACTICES DURING LIFE TRANSITION: KOREAN IMMIGRANT WOMEN’S EVERYDAY LIFE INFORMATION SEEKING AND ACCULTURATION

In this dissertation, I explore information practices during life transition in the context of immigration. This study aims to understand how their unique personal, social, and life contexts shape immigration experiences, and how these diverse contexts are related to various information practices that they engage in to resolve daily information needs and achieve immigration goals. In my study I examined daily information needs and acquisition of Korean immigrant women. Data were collected through two interview sessions, diary entries on everyday information seeking up to three weeks, post-diary debriefing interviews to reveal contexts surrounding information practices, and observation sessions. My study shows that one’s accumulated experiences with information-related situations shape the person’s attitudes toward diverse information resources and habitual information practices. Both personal and social contexts surrounding immigrant women change during life transition and shape how they interpret their immigration experiences, what information they need to deal with both daily and long-term goals, and how they modify their information practices to obtain the relevant information in an unfamiliar information environment. Also, life transition of immigration entails changes in immigrant women’s social roles, which engender their daily responsibilities in the new society. These daily responsibilities motivate immigrant women’s everyday interactions with a variety of communities in order to exchange information and conduct their social roles in the new sociocultural environment. While immigrant women had common information needs around culture learning, social roles and associated responsibilities explain differences in their differing information needs and tend to direct daily information practices. The advancement of ICTs allows immigrant women to conduct their social roles in a remote city as well as to maintain multiple connections with both the heritage and host society. Limited cultural knowledge influences immigrant women’s evaluation and use of the obtained information as well as their acquisition of relevant information. This study provides understandings on the role of information during life transition as well as Korean immigrant women’s information practices.