Download or read book Analyse de performance de syst mes de communications sans fils exploitant micro et macro diversit written by Ilhem Ouachani and published by . This book was released on 2005 with total page 199 pages. Available in PDF, EPUB and Kindle. Book excerpt: Wireless systems are now popular worldwide to help people and machines to communicate with each other independentlyof their location. Hence, the demand for capacity in cellular and wireless local area networks has grownin a literally explosive manner during the last decade. But, data transmission over wireless communication suffersfrom several channel impairements such as fading and cochannel interference. An efficient technique to mitigatethe fading and increase the communication link robustness is the spatial diversity.This thesis deals with the perfomance analysis of wireless communication systems exploiting spatial micro- andmacro-diversity. The first part is concerned with the investigation of Multiple-Input Multiple-Output (MIMO)systems using Orthogonal Frequency division Multiplexing (OFDM), in the micro-diversity context. It is shownthat taking into account the real channel delay profile can have an impact on the MIMO/OFDM system ergodic andoutage capacities, when a parametrized cannel model is considered. Then, two space-time block coding schemesare proposed for a MIMO/OFDM system using two transmit antennas. The second part deals with the performance of wireless systems exploiting spatial macro-diversity. First, a realisticchannel model based on a refinement of the Radio-Frequency Fornt-End (RFFE) is proposed. The impact ofthis realistic channel model on ergodic capacity is investigated. Then, an optimal power allocation algorithm is proposed for the two-relay regenerative paralleltransmission system. This optimization, subject to a cartain power budget to be allocated between the two relays,is done in order to minimize the BER at the destination.
Download or read book Proceedings of International Conference on Wireless Communication written by Hari Vasudevan and published by Springer Nature. This book was released on 2019-11-16 with total page 585 pages. Available in PDF, EPUB and Kindle. Book excerpt: The book comprises selected papers presented at the International Conference on Wireless Communication (ICWiCOM), which is organized by D. J. Sanghvi College of Engineering’s Department of Electronics and Telecommunication Engineering. The book focuses on specific topics of wireless communication, like signal and image processing applicable to wireless domains, networking, microwave and antenna design, and telemedicine systems. Covering three main areas – networking, antenna designs and embedded systems applicable to communication – it is a valuable resource for postgraduate and doctoral students.
Download or read book Discipline and Punish written by Michel Foucault and published by Vintage. This book was released on 2012-04-18 with total page 354 pages. Available in PDF, EPUB and Kindle. Book excerpt: A brilliant work from the most influential philosopher since Sartre. In this indispensable work, a brilliant thinker suggests that such vaunted reforms as the abolition of torture and the emergence of the modern penitentiary have merely shifted the focus of punishment from the prisoner's body to his soul.
Download or read book The State of the World s Land and Water Resources for Food and Agriculture written by Food and Agriculture Organization of the United Nations and published by Routledge. This book was released on 2013-06-17 with total page 332 pages. Available in PDF, EPUB and Kindle. Book excerpt: The State of the World's Land and Water Resources for Food and Agriculture is FAO's first flagship publication on the global status of land and water resources. It is an 'advocacy' report, to be published every three to five years, and targeted at senior level decision makers in agriculture as well as in other sectors. SOLAW is aimed at sensitizing its target audience on the status of land resources at global and regional levels and FAO's viewpoint on appropriate recommendations for policy formulation. SOLAW focuses on these key dimensions of analysis: (i) quantity, quality of land and water resources, (ii) the rate of use and sustainable management of these resources in the context of relevant socio-economic driving factors and concerns, including food security and poverty, and climate change. This is the first time that a global, baseline status report on land and water resources has been made. It is based on several global spatial databases (e.g. land suitability for agriculture, land use and management, land and water degradation and depletion) for which FAO is the world-recognized data source. Topical and emerging issues on land and water are dealt with in an integrated rather than sectoral manner. The implications of the status and trends are used to advocate remedial interventions which are tailored to major farming systems within different geographic regions.
Download or read book Business Information Management written by Dave Chaffey and published by Financial Times/Prentice Hall. This book was released on 2005 with total page 728 pages. Available in PDF, EPUB and Kindle. Book excerpt: This problem-solving text highlights the key issues faced by managers in identifying, capturing and systematising information in order to improve organisational performance.
Download or read book Holisms of communication written by James McElvenny and published by Language Science Press. This book was released on with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: A central pillar of contemporary communication research is the analysis of filmed interactions between people. The techniques employed in such analysis first took on a recognizably modern form in the 1970s, but their roots go back to the earliest days of motion picture technology in the late nineteenth century. This book presents original essays accompanied by written responses which together create a dialogue exploring early efforts at audio-visual sequence analysis and their common goal to capture the "whole" of the communicative situation. The first three chapters of this volume look at the film-based research of Gestalt psychologists in Berlin as well as psychologists in the orbit of Karl and Charlotte Bühler in Vienna in the first decades of the twentieth century. Most of these figures – along with many other Central European scholars of this era – were driven into exile in the United States after the rise of National Socialism in the 1930s. This scientific migration led to the cross-pollination of communication studies in America, an outcome visible in the leading project in interaction research of the mid-twentieth century, the Natural History of an Interview. The following two chapters examine this project in its historical context. The volume closes with a critical edition of a treasure from the archives: the transcript of a speech delivered by Ray Birdwhistell, a key participant in the Natural History of an Interview project and founder of kinesics.
Download or read book Towards Knowledge Societies written by Jérôme Bindé and published by Unesco. This book was released on 2005 with total page 232 pages. Available in PDF, EPUB and Kindle. Book excerpt: Urges governments to expand quality education for all, increase community access to information and communication technology, and improve cross-border scientific knowledge-sharing, in an effort to narrow the digital and "knowledge" divides between the North and South and move towards a "smart" form of sustainable human development.
Download or read book Technology Enhanced Learning written by Nicolas Balacheff and published by Springer Science & Business Media. This book was released on 2009-03-24 with total page 330 pages. Available in PDF, EPUB and Kindle. Book excerpt: Technology-enhanced learning is a timely topic, the importance of which is recognized by educational researchers, practitioners, software designers, and policy makers. This volume presents and discusses current trends and issues in technology-enhanced learning from a European research and development perspective. This multifaceted and multidisciplinary topic is considered from four different viewpoints, each of which constitutes a separate section in the book. The sections include general as well as domain-specific principles of learning that have been found to play a significant role in technology-enhanced environments, ways to shape the environment to optimize learners’ interactions and learning, and specific technologies used by the environment to empower learners. An additional section discusses the work presented in the preceding sections from a computer science perspective and an implementation perspective. This book comes out of the work in Kaleidoscope: a European Network of Excellence in which over 1,000 people from more than 90 institutes across Europe participate. Kaleidoscope brings together researchers from diverse disciplines and cultures, through their collaboration and sharing of scientific outcomes, they are helping move the field of technology-enhanced learning forward.
Download or read book Organizational Information Systems in the Context of Globalization written by Mikko Korpela and published by Springer. This book was released on 2013-03-09 with total page 458 pages. Available in PDF, EPUB and Kindle. Book excerpt: Organizational Information Systems in the Context of Globalization exemplifies the role of social theory in approaching ICT utilization challenges in a globalization context. The debates raised on implementation, policy, organizations and organizing, and social dynamics, increase our awareness of the diversity of perspectives we need to delve into when framing the role of ICTs in the globalization agenda. The equal representation of managerial and non-managerial decision making contexts alerts us to the fact that ICTs should not be considered only as a corporate wealth creation prerogative. This book contains the selected proceedings of the Working Conference on Information Systems Perspectives and Challenges in the Context of Globalization, sponsored by the International Federation for Information Processing (IFIP) and held in Athens, Greece in June 2003.
Download or read book Renewable Energy for Smart and Sustainable Cities written by Mustapha Hatti and published by Springer. This book was released on 2018-11-23 with total page 571 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book features cutting-edge research presented at the second international conference on Artificial Intelligence in Renewable Energetic Systems, IC-AIRES2018, held on 24–26 November 2018, at the High School of Commerce, ESC-Koléa in Tipaza, Algeria. Today, the fundamental challenge of integrating renewable energies into the design of smart cities is more relevant than ever. While based on the advent of big data and the use of information and communication technologies, smart cities must now respond to cross-cutting issues involving urban development, energy and environmental constraints; further, these cities must also explore how they can integrate more sustainable energies. Sustainable energies are a major determinant of smart cities’ longevity. From an environmental and technological standpoint, these energies offer an optimal power supply to the electric network while creating significantly less pollution. This requires flexibility, i.e., the availability of supply and demand. The end goal of any smart city is to improve the quality of life for all citizens (both in the city and in the countryside) in a way that is sustainable and respectful of the environment. This book encourages the reader to engage in the preservation of our environment, every moment, every day, so as to help build a clean and healthy future, and to think of the future generations who will one day inherit our planet. Further, it equips those whose work involves energy systems and those engaged in modelling artificial intelligence to combine their expertise for the benefit of the scientific community and humanity as a whole.
Download or read book Proceedings of the 21st Congress of the International Ergonomics Association IEA 2021 written by Nancy L. Black and published by Springer Nature. This book was released on 2021-04-30 with total page 830 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book presents the proceedings of the 21st Congress of the International Ergonomics Association (IEA 2021), held online on June 13-18, 2021. By highlighting the latest theories and models, as well as cutting-edge technologies and applications, and by combining findings from a range of disciplines including engineering, design, robotics, healthcare, management, computer science, human biology and behavioral science, it provides researchers and practitioners alike with a comprehensive, timely guide on human factors and ergonomics. It also offers an excellent source of innovative ideas to stimulate future discussions and developments aimed at applying knowledge and techniques to optimize system performance, while at the same time promoting the health, safety and wellbeing of individuals. The proceedings include papers from researchers and practitioners, scientists and physicians, institutional leaders, managers and policy makers that contribute to constructing the Human Factors and Ergonomics approach across a variety of methodologies, domains and productive sectors. This volume includes papers addressing the following topics: Activity Theories for Work Analysis and Design (ATWAD), Organisation design and management (ODAM), Ergonomic Work Analysis and Training (EWAT), Systems HF/E, HF/E Education and Professional Certification Development.
Download or read book Spaces and Identities in Border Regions written by Christian Wille and published by transcript Verlag. This book was released on 2015-11-30 with total page 385 pages. Available in PDF, EPUB and Kindle. Book excerpt: Spatial and identity research operates with differentiations and relations. These are particularly useful heuristic tools when examining border regions where social and geopolitical demarcations diverge. Applying this approach, the authors of this volume investigate spatial and identity constructions in cross-border contexts as they appear in everyday, institutional and media practices. The results are discussed with a keen eye for obliquely aligned spaces and identities and relinked to governmental issues of normalization and subjectivation. The studies base upon empirical surveys conducted in Germany, France, Belgium and Luxembourg.
Download or read book Landscape scale Conservation in the Congo Basin written by David Yanggen and published by IUCN. This book was released on 2010 with total page 279 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Business Information Management written by Dave Chaffey and published by FT Press. This book was released on 2011 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: Information. Technology. Both resources are increasingly important as organisations seek to improve their performance. Applying information and technology can offer new ways to do business, increase the efficiency of business processes, reduce costs, and provide the performance measures used to control improvement. Can business information management improve organisational performance? What are the key issues faced by managers today in terms of managing business information? How can 'big picture' strategy be developed, implemented and managed? This textbook takes a problem-solving approach, highlighting the issues faced by managers in identifying, capturing and systematising information in order to improve organisational performance. Now in its second edition, Business Information Management helps students to understand how to improve organisational performance by exploring these issues, and examines solutions to reduce problems. Unique in its multi-stakeholder perspective, this book addresses challenges faced by not only the end-user but also the general manager, IT manager and company director.
Download or read book Media Practice and Everyday Agency in Europe written by Leif Kramp and published by . This book was released on 2014 with total page 375 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Conservation Regeneration the Modernist Neighbourhood written by and published by . This book was released on 2012 with total page 807 pages. Available in PDF, EPUB and Kindle. Book excerpt:
