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PHYSICS OF AMERICIUM TRANSMUTATION
JANNE WALLENIUS 한국원자력학회 2012 Nuclear Engineering and Technology Vol.44 No.2
Using fast neutron Generation IV reactors, recycling of americium and curium may become feasible. The detrimental impact of americium on safety parameters has recently been quantified in terms of a power penalty for surviving a given set of transients in sodium fast reactors. In the present paper, a review of the physical reasons for the adverse effect of americium is provided, and different Gen-IV technologies are assessed with respect to their capability of hosting americium in the fuel.
THE ASYMPTOTIC STABILITY OF SOME INTEGRODIFFERENTIAL EQUATIONS
Chern, Jann-Long,Huang, Shu-Zhu Korean Mathematical Society 2000 대한수학회보 Vol.37 No.2
In this paper we consider two delay equations with in-finite delay. We will give two sufficient conditions for the positive and zero equilibriums of these equations to be a global attractor respectively.
Protective systems for high-technology facilities against microvibration and earthquake
Yang, Jann N.,Agrawal, Anil K. Techno-Press 2000 Structural Engineering and Mechanics, An Int'l Jou Vol.10 No.6
Microvibration of high technology facilities, such as semiconductor plants and facilities with high precision equipments, due to nearby road and rail traffic has attracted considerable attention recently. In this paper, a preliminary study is conducted for the possible use of various protective systems and their performance for the reduction of microvibration. Simulation results indicate that passive base isolation systems, hybrid base isolation systems, passive floor isolation systems, and hybrid floor isolation systems are quite effective and practical. In particular, the performances of hybrid floor isolation systems are remarkable. Further, passive energy dissipation systems are not effective for the reduction of microvibration. Finally, the protections against both microvibration and earthquake are also investigated and presented.
Spatial Filtering for Robust Myoelectric Control
Hahne, Janne Mathias,Graimann, Bernhard,Muller, Klaus-Robert IEEE 2012 IEEE Transactions on Biomedical Engineering Vol.59 No.5
<P>Pattern recognition techniques have been applied to extract information from electromyographic (EMG) signals that can be used to control electrical powered hand prostheses. In this paper, optimized spatial filters that enhance separation properties of EMG signals are investigated. In particular, different multiclass extensions of the common spatial patterns algorithm are applied to high-density surface EMG signals acquired from the forearms of ten healthy subjects. Visualization of the obtained filter coefficients provides insight into the physiology of the muscles related to the performed contractions. The CSP methods are compared with a commonly used pattern recognition approach in a six-class classification task. Cross-validation results show a significant improvement in performance and a higher robustness against noise than commonly used pattern recognition methods.</P>
Hahne, Janne M.,Dahne, Sven,Hwang, Han-Jeong,Muller, Klaus-Robert,Parra, Lucas C. IEEE 2015 IEEE transactions on neural systems and rehabilita Vol.23 No.6
<P>In the above-named work [ibid., vol. 23, no. 4, pp. 618–627, Jul. 2015], the affiliation for Klaus-Robert Mueller should have appeared as follows: K-R. Mueller is with the Machine Learning Laboratory, Berlin Institute of Technology, D-10587 Berlin, Germany, and also with the Bernstein Center for Computational Neuroscience (BCCN), D-10587 Berlin, Germany, and also with the Department of Brain and Cognitive Engineering, Korea University, Anam-dong, Seongbuk-gu, Seoul 136-713, Korea; (e-mail: klaus-robert.mueller@tu-berlin.de).</P>
PHYSICS OF AMERICIUM TRANSMUTATION
Wallenius, Janne Korean Nuclear Society 2012 Nuclear Engineering and Technology Vol.44 No.2
Using fast neutron Generation IV reactors, recycling of americium and curium may become feasible. The detrimental impact of americium on safety parameters has recently been quantified in terms of a power penalty for surviving a given set of transients in sodium fast reactors. In the present paper, a review of the physical reasons for the adverse effect of americium is provided, and different Gen-IV technologies are assessed with respect to their capability of hosting americium in the fuel.
Comparison of various structural damage tracking techniques based on experimental data
Hongwei Huang,Jann N. Yang,Li Zhou 국제구조공학회 2010 Smart Structures and Systems, An International Jou Vol.6 No.9
An early detection of structural damages is critical for the decision making of repair and replacement maintenance in order to guarantee a specified structural reliability. Consequently, the structural damage detection, based on vibration data measured from the structural health monitoring (SHM) system, has received considerable attention recently. The traditional time-domain analysis techniques, such as the least square estimation (LSE) method and the extended Kalman filter (EKF) approach, require that all the external excitations (inputs) be available, which may not be the case for some SHM systems. Recently, these two approaches have been extended to cover the general case where some of the external excitations (inputs) are not measured, referred to as the adaptive LSE with unknown inputs (ALSE-UI) and the adaptive EKF with unknown inputs (AEKF-UI). Also, new analysis methods, referred to as the adaptive sequential non-linear least-square estimation with unknown inputs and unknown outputs (ASNLSE-UI-UO) and the adaptive quadratic sum-squares error with unknown inputs (AQSSE-UI), have been proposed for the damage tracking of structures when some of the acceleration responses are not measured and the external excitations are not available. In this paper, these newly proposed analysis methods will be compared in terms of accuracy, convergence and efficiency, for damage identification of structures based on experimental data obtained through a series of laboratory tests using a scaled 3-story building model with white noise excitations. The capability of the ALSE-UI, AEKF-UI, ASNLSE-UI-UO and AQSSE-UI approaches in tracking the structural damages will be demonstrated and compared.