Thomas Zwick – författare

This comprehensive summary of the state of the art in Ultra Wideband (UWB) system engineering takes you through all aspects of UWB design, from components through the propagation channel to system engineering aspects. Mathematical tools and basics are covered, allowing for a complete characterisation and description of the UWB scenario, in both the time and the frequency domains. UWB MMICs, antennas, antenna arrays, and filters are described, as well as quality measurement parameters and design methods for specific applications. The UWB propagation channel is discussed, including a complete mathematical description together with modeling tools. A system analysis is offered, addressing both radio and radar systems, and techniques for optimization and calibration. Finally, an overview of future applications of UWB technology is presented. Ideal for scientists as well as RF system and component engineers working in short range wireless technologies.

This comprehensive summary of the state of the art in Ultra Wideband (UWB) system engineering takes you through all aspects of UWB design, from components through the propagation channel to system engineering aspects. Mathematical tools and basics are covered, allowing for a complete characterisation and description of the UWB scenario, in both the time and the frequency domains. UWB MMICs, antennas, antenna arrays, and filters are described, as well as quality measurement parameters and design methods for specific applications. The UWB propagation channel is discussed, including a complete mathematical description together with modeling tools. A system analysis is offered, addressing both radio and radar systems, and techniques for optimization and calibration. Finally, an overview of future applications of UWB technology is presented. Ideal for scientists as well as RF system and component engineers working in short range wireless technologies.

This comprehensive summary of the state of the art in Ultra Wideband (UWB) system engineering takes you through all aspects of UWB design, from components through the propagation channel to system engineering aspects. Mathematical tools and basics are covered, allowing for a complete characterisation and description of the UWB scenario, in both the time and the frequency domains. UWB MMICs, antennas, antenna arrays, and filters are described, as well as quality measurement parameters and design methods for specific applications. The UWB propagation channel is discussed, including a complete mathematical description together with modeling tools. A system analysis is offered, addressing both radio and radar systems, and techniques for optimization and calibration. Finally, an overview of future applications of UWB technology is presented. Ideal for scientists as well as RF system and component engineers working in short range wireless technologies.

This book covers a highly relevant but clearly under-researched topic - the impact of environmental innovations on employment on the fmn level. While the impact of innovations on employment has been analysed empirically in several studies, only few studies have specifically analysed innovations which are environmentally beneficial. In this book, we present case studies and an in-depth analysis of the behaviour of more than 1,500 fmns that have recently introduced environmental innovations in five European countries (Germany, United King­ dom, Italy, the Netherlands, Switzerland). The data stem from identical telephone interviews carried out simultaneously in these countries. The interviews were especially designed for analysing the relationship between environmental innova­ tion and employment on the firm-level. On the basis of an econometric model we find which factors lead to positive and which factors lead to negative employment effects in the wake of environmental innovations. Product and service innovations create more jobs in contrast to process innova­ tions. Employment changes only occur in the wake of major innovations. When innovations are mainly motivated by environmental concerns, they tend not to have employment effects. Eco-innovations aiming at cost reduction reduce employment. If the innovation is motivated by market share considerations, employment may change in both directions. We detect skill biased technological change of eco­ innovations, because the share of highly qualified employees has a positive impact on employment increases, while it is insignificant for employment decreases.

This book covers a highly relevant but clearly under-researched topic - the impact of environmental innovations on employment on the fmn level. While the impact of innovations on employment has been analysed empirically in several studies, only few studies have specifically analysed innovations which are environmentally beneficial. In this book, we present case studies and an in-depth analysis of the behaviour of more than 1,500 fmns that have recently introduced environmental innovations in five European countries (Germany, United King­ dom, Italy, the Netherlands, Switzerland). The data stem from identical telephone interviews carried out simultaneously in these countries. The interviews were especially designed for analysing the relationship between environmental innova­ tion and employment on the firm-level. On the basis of an econometric model we find which factors lead to positive and which factors lead to negative employment effects in the wake of environmental innovations. Product and service innovations create more jobs in contrast to process innova­ tions. Employment changes only occur in the wake of major innovations. When innovations are mainly motivated by environmental concerns, they tend not to have employment effects. Eco-innovations aiming at cost reduction reduce employment. If the innovation is motivated by market share considerations, employment may change in both directions. We detect skill biased technological change of eco­ innovations, because the share of highly qualified employees has a positive impact on employment increases, while it is insignificant for employment decreases.

Learning for Jobs is an OECD study of vocational education and training (VET) designed to help countries make their VET systems more responsive to labour market needs.

Since 1989, Hungary has made significant efforts to restructure its VET system and it now has many strengths, including a strong national qualifications framework. But there are significant challenges, including weak links between VET and the labour market, early tracking and multiple selection mechanisms in the school system, and the low status of VET.

The OECD review assesses the main challenges faced by the VET system and presents an interconnected package of policy recommendations. For each recommendation, the report describes the challenge, the recommendation itself, supporting arguments, and issues of implementation.

This Handbook aims to present the rapid development of antenna technologies, particularly in the past two decades, and also showcasing the newly developed technologies and the latest applications. The handbook will provide readers with the comprehensive updated reference information covering theory, modeling and optimization methods, design and measurement, new electromagnetic materials, and applications of antennas. The handbook will widely cover not only all key antenna design issues but also fundamentals, issues related to antennas (transmission, propagation, feeding structure, materials, fabrication, measurement, system, and unique design challenges in specific applications). This handbook will benefit the readers as a full and quick technical reference with a high-level historic review of technology, detailed technical descriptions and the latest practical applications.