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Towards Digital Optical Networks
COST – the acronym for European COoperation in Science and Technology – is the oldest and widest European intergovernmental network for cooperation in - search. Established by the Ministerial Conference in November 1971, COST is presently used by the scientific communities of 35 European countries to coop- ate in common research projects supported by national funds. The funds provided by COST – less than 1% of the total value of the projects – support the COST cooperation networks (COST Actions) through which, with € 30 million per year, more than 30,000 European scientists are involved in - search having a total value which exceeds € 2 billion per year. This is the financial wor...
Single-Laser Multi-Terabit/s Systems
Optical communication systems carry the bulk of all data traffic worldwide. This book introduces multi-Terabit/s transmission systems and three key technologies for next generation networks. A software-defined multi-format transmitter, an optical comb source and an optical processing scheme for the fast Fourier transform for Tbit/s signals. Three world records demonstrate the potential: The first single laser 10 Tbit/s and 26 Tbit/s OFDM and the first 32.5 Tbit/s Nyquist WDM experiments.
Advances in Optical Amplifiers
Optical amplifiers play a central role in all categories of fibre communications systems and networks. By compensating for the losses exerted by the transmission medium and the components through which the signals pass, they reduce the need for expensive and slow optical-electrical-optical conversion. The photonic gain media, which are normally based on glass- or semiconductor-based waveguides, can amplify many high speed wavelength division multiplexed channels simultaneously. Recent research has also concentrated on wavelength conversion, switching, demultiplexing in the time domain and other enhanced functions. Advances in Optical Amplifiers presents up to date results on amplifier perfor...
Linear and Nonlinear Semiconductor Optical Amplifiers for Next-Generation Optical Networks
In this book, semiconductor optical amplifiers (SOAs) are studied with a view to linear and nonlinear applications in next-generation optical networks. Quantum-dot SOAs can be optimized for linear amplification of signals with different modulation formats and multiplexing techniques. Conversely, bulk SOAs can be easily optimized for operation in the nonlinear regime. However, due to the fast carrier recovery times in QD SOAs we also look into nonlinear applications with these devices.
Optical Network Design and Modeling
This book constitutes the refereed proceedings of the 11th International IFIP-TC6 Conference on Optical Network Design and Modeling, ONDM 2007, held in Athens, Greece, in May 2007. The 41 revised full papers presented together with 14 invited papers address all recent advances in the design, modeling and implementation of optical networks.
Icon of the Kingdom of God
What is the Church? Some would answer this question by studying the Scriptures, the history of the Church, and contemporary theologians, thus addressing the theological nature of the Church. Others would answer based on statistics, interviews, and personal observation, thus focusing on the experience of the Church. These theological and experiential perspectives are in tension, or at times even opposed. Whereas the first might speak about the local church as the diocese gathered in the Liturgy presided over by its bishop, the latter would describe the local church as the parish community celebrating the Liturgy together with the parish priest, never experiencing a sole liturgy that gathers a...
Stem Cell and Biologic Scaffold Engineering
Tissue engineering and regenerative medicine is a rapidly evolving research field which effectively combines stem cells and biologic scaffolds in order to replace damaged tissues. Biologic scaffolds can be produced through the removal of resident cellular populations using several tissue engineering approaches, such as the decellularization method. Indeed, the decellularization method aims to develop a cell-free biologic scaffold while keeping the extracellular matrix (ECM) intact. Furthermore, biologic scaffolds have been investigated for their in vitro potential for whole organ development. Currently, clinical products composed of decellularized matrices, such as pericardium, urinary bladd...
AMSTAT News
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Inequalities in Young People's Health
This international report from the Health Behaviour in School-aged Children (HBSC) World Health Organization collaborative cross-national study [...] presents the key findings on patterns of health among young people in 41 countries and regions across Europe and North America. The document presents a status report on health, health-related behaviour and the social contexts of young people's health in 2005/2006 and provides the latest evidence from a unique cross-national study on the well-being of young people in industrialized nations. [...] In addition to presenting key statistics on young people's health, this report has a special focus on health inequalities. It presents data on gender, age and geographic and socioeconomic dimensions of health differentials. The aim of the report is to highlight where inequalities exist in aspects of young people's health and well-being in order to inform and influence policy and practice and to contribute to health improvement for all young people. [Ed.]
