31 research outputs found

    Waveguide High-pass filter Design and 2D-FDTD Analysis method

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    In this work, we apply the numerical method of two dimensions Finite Difference Time Domain (2D-FDTD) for modeling a high-pass rectangular waveguide filter via a MATLAB code using ABC for absorption boundary conditions. Two 2D-FDTD approaches has been presented, the first approach is based on two runs FDTD simulation and the second on one run simulation. The second approach based on one run 2D-FDTD simulation can reduce a time simulation by 50 % and give accurate results. Frequency response of this filter is obtained by Fourier Transformation and compared with simulation results obtained by the CST-MWS software

    The Dutch CAR-T tumorboard experience: population-based real-world data on patients with relapsed or refractory large B-Cell lymphoma referred for CD19-directed CAR T-Cell therapy in The Netherlands

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    Simple Summary CAR T-cell therapy has emerged as the new standard of care for patients with relapsed/refractory (R/R) large B-cell lymphoma (LBCL), but real-world outcomes differ across countries. Additionally, real-world data on health-related quality of life (HR-QoL) are scarce but important, as they reflect the direct experience of patients. In the Netherlands, patients can be referred to the CAR-T tumorboard, a national CAR-T expert panel, who decide whether CAR-T is a feasible treatment option. This multicenter study reports on the favorable outcomes, including the HR-QoL, of axicabtagene ciloleucel (axi-cel) for patients with R/R LBCL after & GE;2 lines of systemic therapy in the Netherlands. On the other hand, we show that a substantial proportion of patients are still in need of alternative treatments, including improved CAR-T strategies, as they are unfit for or do not respond to axi-cel. Comparing real-world outcomes between cohorts could help to select best practices and further optimize CAR-T treatment.Abstract The real-world results of chimeric antigen receptor T-cell (CAR-T) therapy for patients with relapsed/refractory (R/R) large B-cell lymphoma (LBCL) substantially differ across countries. In the Netherlands, the CAR-T tumorboard facilitates a unique nationwide infrastructure for referral, eligibility assessment and data collection. The aim of this study was to evaluate real-world outcomes of axicabtagene ciloleucel (axi-cel) in the Dutch population, including the thus-far underreported effects on health-related quality of life (HR-QoL). All patients with R/R LBCL after & GE;2 lines of systemic therapy referred for axi-cel treatment between May 2020-May 2022 were included (N = 250). Of the 160 apheresed patients, 145 patients received an axi-cel infusion. The main reason for ineligibility was rapidly progressive disease. The outcomes are better or at least comparable to other studies (best overall response rate: 84% (complete response: 66%); 12-month progression-free-survival rate and overall survival rate: 48% and 62%, respectively). The 12-month NRM was 5%, mainly caused by infections. Clinically meaningful improvement in several HR-QoL domains was observed from Month 9 onwards. Expert-directed patient selection can support effective and sustainable application of CAR-T treatment. Matched comparisons between cohorts will help to understand the differences in outcomes across countries and select best practices. Despite the favorable results, for a considerable proportion of patients with R/R LBCL there still is an unmet medical need.Immunobiology of allogeneic stem cell transplantation and immunotherapy of hematological disease

    On Some Problems in Discrete Wavelet Analysis of Bivariate Spectra with an Application to Business Cycle Synchronization in the Euro Zone

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    The paper considers some of the problems emerging from discrete wavelet analysis of popular bivariate spectral quantities like the coherence and phase spectra and the frequency-dependent time delay. The approach taken here, introduced by Whitcher and Craigmile (2004), is based on the maximal overlap discrete Hilbert wavelet transform (MODHWT). Firstly, we point at a deficiency in the implementation of the MODHWT and suggest using a modified implementation scheme resembling the one applied in the context of the dual-tree complex wavelet transform of Kingsbury (see Selesnick et al., 2005). Secondly, via a broad set of simulation experiments we examine small and large sample properties of two wavelet estimators of the scale-dependent time delay. The estimators are: the wavelet cross-correlator and the wavelet phase angle-based estimator. Our results provide some practical guidelines for empirical examination of short- and medium-term lead-lag relations for octave frequency bands. Besides, we show how the MODHWT-based wavelet quantities can serve to approximate the Fourier bivariate spectra and discuss certain issues connected with building confidence intervals for them. The discrete wavelet analysis of coherence and phase angle is illustrated with a scale-dependent examination of business cycle synchronization between 11 euro zone member countries. The study is supplemented with wavelet analysis of variance and covariance of the euro zone business cycles. The empirical examination underlines good localization properties and high computational efficiency of the wavelet transformations applied, and provides new arguments in favour of the endogeneity hypothesis of the optimum currency area criteria as well as a wavelet evidence on dating the Great Moderation in the euro zone

    Comparative performance analysis of Passivhaus and building regulation certified properties built in the United Kingdom

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    This paper compares the energy performance of Passivhaus and Building Regulations certified properties constructed in the UK. The Passivhaus criteria and construction principles are explained and the certification criteria for both standards are rationalised for a direct comparison. Relevant data was collected from case studies, building certifications, and the approved local planning submissions. The results reveal that, on average, Passivhaus properties were twice as thermally efficient from a numeric U-value standpoint, though are likely to perform even better due to the construction quality standards. This notion is backed up by the overall energy savings which on average come out to 75% compared to a conventionally built home

    The Scale Analysis of Bivariate Non-Gaussian Time Series via Wavelet Cross-Covariance

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    this paper we study the scale analysis of bivariate time series through use of the wavelet cross-covariance. If
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