The present study deals with the batch and fed-batch mass production of Steinernema carpocapsae. S. carpocapsae is an entomoparasitic nematode that is used as a biological control agent of soil-borne crop insect pests. The ability and efficiency of fed-batch culture process was successful through the utilization of the nematode’s bacterial symbiont Xenorhabdus nematophila. Results from the fed-...

Hadoop, an open-source implementation of MapReduce, has been widely used for data-intensive computing. In order to improve performance, multiple jobs operating on a common data file can be processed as a batch to share the cost of scanning the file. However, in practice, jobs often do not arrive at the same time, and batching them means longer waiting time for jobs that arrive earlier. In this ...

In this note, we consider discrete-time finite Markov Chains and assume that they are only partly observed. We obtain finite-dimensional normalized filters for basic statistics associated with such processes. Recursive equations for these filters are derived by means of simple computations involving conditional expectations. An application to the estimation of parameters for the so-called discr...

Nucleic acid-dependent polynucleotide adenylytransferase (EC 2.7.7.19) and ribonucleic acid polymerase (EC 2.7.7.6) have been partially purified from maize tissues (Zea mays L.) utilizing ammonium sulfate precipitation and batch diethylaminoethylcellulose chromatography. The technique is applicable to the simultaneous processing of up to eight samples of plant tissue and affords a rapid and rep...

The syntheses of various pyrimidinones as potentially bioactive products by means of the highly controlled continuous-flow retro-Diels-Alder reaction of condensed pyrimidinone derivatives are presented. Noteworthy, the use of this approach allowed us to rapidly screen a selection of conditions and quickly confirm the viability of preparing the desired pyrimidinones in short reaction times. Yiel...

We extend the model checking tool MultiVeStA with statistical model checking of steady-state properties. Since MultiVeStA acts as a front-end for simulation tools, it confers this ability onto any tool with which it is integrated. The underlying simulation models are treated as black-box systems. We will use an approach based on batch means using the ASAP3 algorithm. We motivate the work using ...

We propose to find the propagation constants of modes in layered media by means of signal identification methods. To this effect we employ Cauchy’s theorem, conformal mapping and Fast Fourier Transform (FFT) techniques to generate relevant Hankel moments, afterwards to be processed with selected signal identification algorithms. The method, terminated by a few Newton steps, provides a batch of ...

The feasibility of producing antibiotics by single-stage continuous fermentation was explored by means of a specially designed pilot plant. Both the chloramphenicol and penicillin processes appeared adaptable to such an operation. At dilution rates of 1.0 and 0.5 volume changes per day respectively, yields of from & to 4 of the maxima obtained in batch operation were maintained in the steady-st...

Abstract: This paper proposes a nonlinear model predictive control scheme with particular application to the regulation of acetate concentration in order to maximize the biomass growth during fed-batch cultures of E. Coli. A reference feed rate which enables to maintain the acetate concentration at a specified level is first determined by means of optimal conditions. This feed rate is further u...

This paper discusses batch gradient descent learning in mul-tilayer networks with a large number of statistical training data. We emphasize on the diierence between regular cases, where the prepared model has the same size as the true function , and overrealizable cases, where the model has surplus hidden units to realize the true function. First, experimental study on multilayer perceptrons an...