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Energietechnik
(2007)
Dieses Lehrbuch vermittelt dem Leser anschaulich ein solides, grundlegendes Verständnis für die Zusammenhänge der Energieumwandlungsprozesse. Es umfasst die gesamte Bandbreite der Energietechnik, angefangen bei den Grundlagen der Energie-Verfahrenstechnik über die Beschreibung ausgeführter aktuellster Anlagen (aller Kraftwerkstypen) bis zur Energieverteilung und -speicherung. Schwerpunkte sind regenerative/nachhaltige Energietechniken, Kombianlagen (z. B. Gas- und Dampfturbinen-Kraftwerke) und Anlagen mit Kraft-Wärme-Kopplung (z. B. BHKW).
Neu aufgenommen wurden das Kapitel Kyoto-Protokoll sowie Konzepte zu emissionsfreien Kohlekraftwerken. Das Kapitel zur Liberalisierung der Energiemärkte erfuhr eine neue Fassung. Zahlreiche Verbesserungen an Texten und Bildern wurden eingearbeitet.
Auf Grund des didaktischen Konzepts ist dieses Buch nicht nur Studierenden zu empfehlen, sondern auch jedem, der an aktuellen Fragestellungen zur Energietechnik interessiert ist.
The identification and quantification of compounds in the gas phase becomes of increasing interest in the context of environmental protection, as well as in the analytical field. In this respect, the high extinction coefficients of vapours and gases in the ultraviolet wavelength region allow a very sensitive measurement system. In addition, the increased performance of the components necessary for setting up a measurement system, such as fibres, light sources and detectors has been improved. In particular the light sources and detectors offer improved stability, and the deep UV performance and solarisation resistance of fused silica fibres allow have been significantly optimized in the past years. Therefore a compact and reliable detection system with high measuring accuracy is developed. Within this paper possible applications of the system under development and recent results will be discussed.
Media Soundscapes II
(2007)
To provide proper solutions to the problem of device dependant content delivery, a fine categorization of the application target devices is needed. Earlier attempts provided two different presentations for desktop and mobile platforms. The mobile platform presentation was divided into three categories, based on a general classification (PDA, Smartphone or mobile phone). In order to improve the on mobile device presentation a finer categorization is introduced. In this paper, our focus is to clarify the concept of this more flexible presentation module, in which the delivered content depends on the efficiency of the device based on a selected set of capabilities.
This paper presents a multicarrier code-division multiple-access (CDMA) system architecture that is based on complete complementary orthogonal spreading codes. The architecture has several advantages as compared to conventional CDMA systems. Specifically, it offers multiple-access interference-free operation in additive white Gaussian noise channels, reduces cochannel interference significantly, and has the potential of higher capacity and spectral efficiency than conventional CDMA systems. This is accomplished by using an ldquooffset stackedrdquo spreading modulation technique. To maintain good performance in the presence of fading, the offset stacked modulator is followed by a quadrature-amplitude modulation map, which is designed to optimize performance in a fading environment. This new modulation scheme also simplifies the rate-matching algorithms that are relevant for multimedia services and Internet Protocol-based applications.