Control of activated sludge process based on measurement of the dissolved oxygen profile has the distinct advantage of using sensors of proven reliability. These measurements, when coupled with the power of an on-line computer, permit the calculation of important variables which cannot be measured directly. The features of the profile which are of major significance are the position of the maximum

The purpose of this study is to compare three different methods for determining the thermal diffusivity of a one dimensional heat diffusion process. A modifiedA˚ngstro¨m's method, an on-line least squares method and a maximum likelihood method have been applied to data obtained from experiments on a long copper rod. The accuracy, the amount of computation, the storage capacity and in general the a

The problem of forcing the output of a multivariate sampled-data system to zero in a minimum number of time steps is discussed. The solution to the posed problem is given as a linear state feedback. The zeros of the system are contained among the poles of the closed-loop system. The performance of the closed-loop system will be unsatisfactory if any of these zeros are located close to or outside t

The results stated in the above paper1 concerning an approved stochastic approximation method are considered. Formulas for the variances of the estimates are derived, and it is found that, in fact, the new algorithm is inferior to previously suggested ones.

This paper discusses the increasing prominence of religious, iconic symbolism in Turkish visual politics, by focusing state sponsored expositions, cultural-cum-pedagogic events and public celebrations, orchestrated by the Turkish AKP Government and affiliated municipalities. Such public, religio-cultural and populist orchestrations of Islamic symbolism, this paper argues, are aspects of a current

The paper uses an unconventional story format to report on three cases of tourism innovation, using the literary genre of nonsense to also contemplate narrative expression in academic research. Case materials principally derive from open in-depth interviews. The analysis highlights the importance of knowledge in innovation, also illuminating an important relationship to entrepreneurial passion. No

Boken innehåller en grekisk text (baserad på cod. Athos Protaton 86 och cod. Parisinus graecus 2474) utgiven av Britt Dahlman och en svensk översättning av den systematiska samlingen av Apophthegmata Patrum (Ökenfädernas tänkespråk), bok 15. Översättningen har gjorts gemensamt av deltagarna i översättningsseminariet vid Johannesakademin.The book contains a Greek text (based on MS Athos Protaton 86 and MS Parisinus graecus 2474) edited by Britt Dahlman and a Swedish translation of the Systematical collection of the Apophthegmata Patrum, book 15. The translation was made jointly by the participants in the translation seminar at Johannesakademin.

We prove in this article that the set of semi-hyperbolic rational maps has Lebesgue measure zero in the space of rational maps on the Riemann sphere for a fixed degree d = 2. This extends the earlier result [3] to its full generality.