Changes in bone tissue of women under condition of 120 days antiorthostatic hypokinesia

A comparative analysis was carried out between the hair content of basic trace metals in patients with atherosclerosis, ischemic heart disease (IHD) and findings from their immunogrammes. Close correlation was found out between changes in concentrations of Mn, Cu, Fe, Si, Zn, Ca and processes of activation of basic leucocyte populations characteristic of IHD course and alterations in humoral immune response peculiar to the above patients. Conclusions were reached about presence of the aforementioned changes in the pathogenesis of atherosclerosis, IHD.     

Blick hinter die Kulissen der Ausgleichsenergie — Technisch betrachtet

This paper describes the IT-system for the technical clearing of balancing energy based on the implemented balance group model. The model is adapted to the specific needs of the balancing energy clearing center for the control area of Austrian Power Grid (APG). The required tasks were realized with a complex IT-system. The system is fully web based and administrates the organization and data management of the different balance groups and their relationship among them. Based on this information it determines the balancing energy and the related fees for each individual balancing group.     

Control of Lamellae Spacing During Freeze Casting of Ceramics Using Double-Side Cooling as a Novel Processing Route

A processing route for freeze-casting of particle suspensions is presented, where the microstructure development during the solidification process can be controlled precisely. For this purpose, the single-side cooling and double-side cooling methods are compared. A procedure will be shown to control the freezing process using the double-side cooling method. Our approach was to determine the freezing conditions in order to forecast the freezing velocity and to carry out an advanced directional solidification setup for the experimental realization. Using this setup and the theoretical knowledge, the microstructure development can be controlled during the whole freezing process over a length of several centimeters.     

Communication ICs — market leaders in microelectronics

In recent years communication ICs became the fastest growing semiconductor market segment mainly driven by personal wireless communication products like pagers or mobile phones and internet applications with their permanent demand on increasing bandwidth. The high volume consumer market and its demand for low-cost, low-power, and highly integrated solutions had stimulated RF design engineers all over the world to develop novel integrated solutions for communication devices with an innovative advance that is more close to Moore’s law than it was in the past. This was made possible once by a great progress in semiconductor technology, where well established silicon and silicon bipolar technologies extend the operating range steadily up to higher frequencies in the GHz range at the expense of GaAs technology which is driven back to niche products like power amplifiers and to communication techniques in the 40-Gbits/s range and above. On the other hand the integration of a complete system with a single technology has also consequences to the topology of the system and that has led to fundamental changes in system design procedures, which are treated by more sophisticated design tools which cover both system and circuit design and bring them close together. In this paper some actual trends in the development of communication ICs are presented and examples of recently published devices are given.     

Berichtigung

Ohne Zusammenfassung The online version of the original article can be found at     

Power Quality und technisches Risikomanagement

Ohne Zusammenfassung Kurzfassung eines Vortrags, gehalten anl?sslich der 39. Fachtagung der ?sterreichischen Gesellschaft für Energietechnik im ?VE, die am 18. und 19. Oktober 2001 in Salzburg stattfindet.     

Ständererdschlussschutz mit 3. Harmonischer — Messungen in einem Kraftwerk

Ohne Zusammenfassung     

Matrix assignment with individual weights and selected controller restrictions

The design method of matrix assignment as a generalization of pole assignment is extended with some special features. Overstepping the optimal solution given by the Penrose point could be needed in the case of unstable plants. Individual weighting of the coefficient matrix differences is carried out and oriented on the numerical importance of the settings. Individual restrictions of the controller matrix are also included and are based on the given deterioration of state variables with noise. The paper also addresses minimum values of the controller norm which are located between singular values of the input matrix of the system.     

Modellierung des technischen Wahrnehmungsbewusstseins für den Bereich Home Automation

The OSI model and the system of profiles defined for various branches are the most important models for describing the communication of technical units in the area of home automation. But they are not enough for describing complex expiry scenarios in houses and buildings as a whole. The following paper presents such a model, which is presently being realized in the Smart Kitchen project. In doing so we will be able to cover, amongst other things, aspects like reliability, availability, maintainability, interoperability and profitability. Several institutes are involved in this project.