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[en] Resolving the uncertainties associated with solutions obtained from artificial neural networks (ANNs) is a major concern for ANN researchers. Error bounds on the solutions are important because they are in integral part of verification and validation. In this research, stacked generalization (SG) is applied to provide error bounds for novel solutions obtained from ANNs. This work shows that SG can provide error bounds on ANN results. We have applied SG to nuclear power plant fault detection for verification of diagnoses provided by ANNs
[en] The structure of RT room is consist of concrete. Because of low cost and shielding efficiency, the concrete is used widely for building of RT room. But in fortunately, gamma radiation is scattered so much with the concrete and back scattering also very strong. The secondary radiation by back scattering will be big affected in making film image quality in case of heavy wall casting, it is needed long exposure time. The long exposure time means increasing of scattered radiation to the film. In the topic, the interaction of gamma radiation and materials by scattered radiation will discussed and also the attenuation of scattered radiation with concrete. It is the main object to find the method of minimizing the effects by the scattered radiation for each materials and its application.
[en] In order to produce only a pH-controlled solution without discharging any unused solution, has developed a continuous electrolytic system with a pH-adjustment reservoir being placed before an ion exchange membrane-equipped electrolyzer, where as a target solution was fed into the pH-adjustment reservoir, some portion of the solution in the pH-adjustment reservoir was circulated through the cathodic or anodic chamber of the depending on the type of the ion exchange membrane used, and some other the solution in the pH-adjustment reservoir was discharged from the electrolytic system through other counter chamber with its pH being controlled as acid or base. The of the pH being controlled in the system could be explained by the electro-migration of the ion species in the solution through the ion exchange membrane under a cell potential difference between anode and cathode and its consequently-occurring non-charge equilibriums and electrolytic water- split reactions in the anodic and cathodic chambers
[en] Disturbing vibrations diminish the performance of technical high precision devices significantly. In search of a suitable solution for reducing these vibrations, a novel concept of active vibration reduction was developed which exploits the special properties of magnetorheological fluids. In order to evaluate the concept of such an active vibration absorber (AVA) a demonstrator was designed and manufactured. This demonstrator generates a force which counteracts the motion of the vibrating body. Since the counterforce is generated by a centrifugal exciter, the AVA provides the capability to compensate vibrations even in two dimensions. To control the strength of the force transmitted to the vibrating body, the exciter is based on a tunable MR coupling. The AVA was integrated in an appropriate testing device to investigate its performance. The recorded results show a significant reduction of the vibration amplitudes by an order of magnitude.
[en] There is a continuing need to have reliable physicochemical data for actinide compounds and for the preparation of actinide elements in aqueous solution available for nuclear engineers and scientists. These data are needed for all aspects of the nuclear fuel cycle - from the behaviour of actinides in reactor fuels at high temperature and pressure to actinide behavior in geologic repository environments. This paper summarizes the status of actinide physiochemical data assessment and selection. The topics covered include data assessment of chemical thermodynamic properties and solubilities of actinide compounds and solution equilibria of the actinides. (orig.)