Hochwasserrückhalteanlagen im Südburgenland

In Southern Burgenland, located in southeast Austria, the annual precipitation amounts to roughly 800 mm; when heavy rains hit, daily precipitation maxima can be as high as 100 mm. These extreme precipitation events in the middle basin of the Rába (Raab) River produce not only extremely high, concentrated peak discharge values, but also flood waves with considerable transport loads. So as to avoid flood damages, above all preventive measures in the form of flood retention structures are implemented as close to the at-risk settlements as possible.     

A Note on 3D-Clip Optimisation

In order to optimize the transformation-clipping-pipeline of PHIGS or GKS-3D it is sometimes necessary to determine whether a plane intersects a perpendicular volume or not. The solution to this problem is not very complicated. This paper offers a more effective procedure that handles this task.     

Empirical quantizer design in the presence of source noise orchannel noise

The problem of vector quantizer empirical design for noisy channels or for noisy sources is studied. It is shown that the average squared distortion of a vector quantizer designed optimally from observing clean independent and identically distributed (i.i.d.) training vectors converges in expectation, as the training set size grows, to the minimum possible mean-squared error obtainable for quantizing the clean source and transmitting across a discrete memoryless noisy channel. Similarly, it is shown that if the source is corrupted by additive noise, then the average squared distortion of a vector quantizer designed optimally from observing i.i.d. noisy training vectors converges in expectation, as the training set size grows, to the minimum possible mean-squared error obtainable for quantizing the noisy source and transmitting across a noiseless channel. Rates of convergence are also provided     

Das Kind in Pietismus und Aufklärung

Ohne Zusammenfassung     

Erfahrungen mit Mehrproduktanlagen

Experience Gained with Multipurpose Plants. Multipurpose plants are used in many fields of production. Some products often have a short life cycle or are not in continuous demand; hence these plants undergo constant changes. In order to control these changes from an economical point of view, certain boundary conditions must be met. The following article describes which questions have to be asked and answered and which structures prove to be advantageous for such plants.