149,057 research outputs found
Manufacturing Cells for Clinical Use
No full textCitation: Weiss, M. L., Rao, M. S., Deans, R., & Czermak, P. (2016). Manufacturing Cells for Clinical Use. Stem Cells International, 5. doi:10.1155/2016/1750697The growth in the number of registered clinical trials indicates that there is a need for cells for many types of cell therapy. Figure 1, which is reprinted from the excellent blog maintained by Alexi Bersenev, shows that the cell type used in most clinical trials worldwide is the mesenchymal stromal cell (MSC). The MSC type requires in vitro expansion to reach a clinical dose and thus there is a desire to optimize and standardize processes and procedures for MSC manufacture specifically for clinical use
L\u27efficacité en éducation et en formation : Définitions, Pratiques et Innovations. Ouverture
No full textBertrand Troadec, Directeur de l\u27ÉSPÉ de Martinique et Pierre-Olivier Weiss, ATER en sociologie de l\u27éducation, font part respectivement du mot d\u27accueil et de l\u27introduction de la journée d\u27étude
Michael Weiss interview
No full textAn interview with Michael Weiss, a Holocaust survivor, conducted by Dr. Sidney Bolkosky, Professor of History at the University of Michigan—Dearborn. Born in Kascony, Czechoslovakia, Mr. Weiss chronicles his experiences under the Czechoslovakians, Hungarians and Germans, both prior to and during the Second World War. Mr. Weiss and his family were shipped to the Hungarian ghetto of Beregszasz (Berehovo) in 1944. From Beregszasz, the family was deported to Auschwitz where his mother was gassed by the Germans. From Auschwitz, Weiss and his father were sent to Buchenwald and then on to Zeitz, located approximately fifteen miles south of Leipzig in Central Germany.An interview with Michael Weiss, a survivor of the Nazi holocaust of the Jews, by Sid Bolkosky.http://deepblue.lib.umich.edu/bitstream/2027.42/57191/3/Weiss950809-2.aiffhttp://deepblue.lib.umich.edu/bitstream/2027.42/57191/2/Weiss950809-1.aiffhttp://deepblue.lib.umich.edu/bitstream/2027.42/57191/1/Weiss.pd
Variations on a theme of Boole and Stein-Weiss
No full textWe give an alternative proof of a theorem of Stein and Weiss: The distribution function of the Hilbert transform of a characteristic function of a set E only depends on the Lebesgue measure |E| of such a set. We exploit a rational change of variable of the type used by George Boole in his paper "On the comparison of transcendents, with certain applications to the theory of definite integrals" together with the observation that if two functions have the same L^p norms in a range of exponents p_1<p<p_2 then their distribution functions coincide
Guido L. Weiss
No full textDepto. de Análisis Matemático y Matemática AplicadaFac. de Ciencias MatemáticasTRUEpu
Fast Implementation of Oversampled Modulated Filter Banks
No full textThis paper presents an efficient implementation of oversampled filter banks derived from a prototype filter by modulation. Via a polyphase analysis, redundancies in the filter operations are removed. With some modifications, a very simple and efficient implementation is found, which is briefly compared to existing realisations
A Generalised Sidelobe Canceller Employing Two-Dimensional Frequency Invariant Filters
No full textBased on the generalised sidelobe canceller (GSC), in this paper we propose a novel broadband adaptive beamformer, where the quiescent vector and blocking matrix are replaced by a series of two-dimensional frequency invariant filters (FIFs). A beam pointing towards the signal of interest takes the role of the quiescent vector, whereas the blocking matrix is formed by a number of beams covering the remaining space, with a zero response towards the signal of interest. As opposed to standard beamspace techniques, the FIFs are flexible in their number and are not required to posses a very low sidelobe level. Compared with a standard GSC, a faster convergence speed and lower computational complexity for the adaptive part can be achieved due to a shorter adaptive filter length
Efficient Implementations of Complex and Real Valued Filter Banks for Comparative Subband Processing with an Application to Adaptive Filtering (301kB)
No full textIn this paper, we discuss efficient methods to implement correlation type algorithms in subbands. Based on a polyphase representation, a modulated GDFT filter bank with arbitrary integer decimation ratio can be performed at minimum cost, yielding complex subband signals. Real valued subbands can be achieved by appropriate postprocessing of the complex filter bank. Algorithm specific, complex or real implementation may be better suited, for which we present criteria. For the example of subband adaptive filtering as applied in acoustic echo cancellation, we compare a number of algorithms with respect to their best implementation
A Subband-Selective Broadband GSC with Cosine-Modulated Blocking Matrix
No full textIn this paper, a novel subband-selective generalized sidelobe canceller (GSC) for partially adaptive broadband beamforming is proposed. The columns of the blocking matrix are derived from a prototype vector by cosine-modulation, and the broadside constraint is incorporated by imposing zeros on the prototype vector appropriately. These columns constitute a series of bandpass filters, which select signals with specific angles of arrival and frequencies. This results in highpass-type bandlimited spectra of the blocking matrix outputs, which is further exploited by subbands decomposition and suitably discarding the low-pass subbands prior to running independent unconstrained adaptive filters in each non-redundant subband. By these steps, the computational complexity of a GSC implementation is greatly reduced compared to fully adaptive GSC schemes, while performance is comparable or even enhanced due to subband decorrelation in both spatial and temporal domains
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