9,487 research outputs found
Practical extensions to cycle time approximations.for the G/G/m-queue with applications
No full textApproximate closed form expressions for the mean cycle time in a G/G/m-queue often serve as practical and intuitive alternatives to more exact but less tractable analyses. However, the G/G/m-queue model may not fully address issues that arise in practical manufacturing systems. Such issues include tools with production parallelism, tools that are idle with work in process, travel to the queue, and the tendency of lots to defect from a failed server and return to the queue even after they have entered production. In this paper, we extend popular approximate mean cycle time formulae to address these practical manufacturing issues. Employing automated data extraction algorithms embedded in software, we test the approximations using parameters gleaned from production tool groups in IBM's 200 mm semiconductor wafer fabricator
Der Psalter des Königs und Propheten Davids, verdeutscht durch D. Martin Luthern
No full textElektronische Reproduktion von: Der Psalter des Königs und Propheten Davids, verdeutscht durch D. Martin Luthern. - Erfurt : Siering, 1805. -
Standort: Universität Marburg, Bibliothek Evangelische Theologie [381] (Gesangbuchsammlung)
Signatur: PTh Dp Wei 1795 b sekr. -
Bemerkungen: In Fraktur. -
Digitalisiert 201
Discontinuous DP-coordination in German
No full textIn this paper, we introduce what we consider to be a new problem for syntactic analysis. We show that German allows for discontinuous coordination of DPs, where material that is not part of the coordinate structure may intervene between the DP-coordinates. We further argue that discontinuous coordination of DPs differs from standard DP-coordination in one important aspect: The coordinate structure as a whole is not accessible to material c-commanded by the first coordinate in overt syntax. This difference is a non-trivial problem for any analysis of discontinuous DP-coordination. Keywords: coordinate structures; discontinuous constituents; DP-coordination; German syntax; linear order</jats:p
A common HLA-DPA1 variant is associated with hepatitis B virus infection but fails to distinguish active from inactive Caucasian carriers
No full textBackground and Aims: Chronic infection with the hepatitis B virus (HBV) is a major health issue worldwide. Recently, single nucleotide polymorphisms (SNPs) within the human leukocyte antigen (HLA)-DP locus were identified to be associated with HBV infection in Asian populations. Most significant associations were observed for the A alleles of HLA-DPA1 rs3077 and HLA-DPB1 rs9277535, which conferred a decreased risk for HBV infection. We assessed the implications of these variants for HBV infection in Caucasians.
Methods: Two HLA-DP gene variants (rs3077 and rs9277535) were analyzed for associations with persistent HBV infection and with different clinical outcomes, i.e., inactive HBsAg carrier status versus progressive chronic HBV (CHB) infection in Caucasian patients (n = 201) and HBsAg negative controls (n = 235).
Results: The HLA-DPA1 rs3077 C allele was significantly associated with HBV infection (odds ratio, OR = 5.1, 95% confidence interval, CI: 1.9–13.7; p = 0.00093). However, no significant association was seen for rs3077 with progressive CHB infection versus inactive HBsAg carrier status (OR = 2.7, 95% CI: 0.6–11.1; p = 0.31). In contrast, HLA-DPB1 rs9277535 was not associated with HBV infection in Caucasians (OR = 0.8, 95% CI: 0.4–1.9; p = 1).
Conclusions: A highly significant association of HLA-DPA1 rs3077 with HBV infection was observed in Caucasians. However, as a differentiation between different clinical courses of HBV infection was not possible, knowledge of the HLA-DPA1 genotype cannot be translated into personalized anti-HBV therapy approaches
On the effects of non-linearities in DP systems
No full textIn offshore operations a trend is forming where vessels are more often required to do multiple short operations within a small-time frame. Traditional mooring systems require execution time far beyond the operation time. Dynamic positioning systems offer great advantages for short time span operations such as crew transfer or lift operations. Currently operations are planned based on DP capability plots and experience of captain and DPO. DP capability plots have little operational value as this is a static calculation and only provide information for average station keeping capability. During operations, the displacements made by the vessel around the DP set-point, also referred to as DP offset, are of great importance to determine the operability of an operation. Currently, the only way of calculating the DP offset is by conducting extensive time domain simulations, which are hard to integrate in the operational workflow of a DP vessel involved in walk-to-work operations. Therefore, a new approach is developed which predicts the vessel’s DP offset in the frequency domain, which enables a quick and robust calculation of the DP offset which is suited to merge into the on-board workflow. A frequency domain model is per definition a linear model. This leads to the main challenge of this research. A vessel operating on DP is non-linear. Currently there is no insight in what the effect is of non-linear components present in a DP system, on the linear approximation of a frequency domain model. To investigate the effect of non-linear components onto the DP frequency domain model, a time domain model is developed that is capable of systematically enabling/disabling different non-linear components. The time domain model will serve as the ’truth’ in this research as no actual vessel data is available. Furthermore, this helps identify the effects more easily, as the input for both models are identical. From the time domain model transfer functions can be derived that serve as the basis for the frequency domain model. The transfer function is a linear relation between two variables. In this case, between second order wave drift forces and displacement of the vessel in surge, sway and yaw direction. The following non-linear components are investigated in this research: Thruster ramp up, thruster turning rate, forbidden zones, saturation and thruster allocation. Thruster allocation is present in each model that will be tested, as this is an essential part of a DP system. Using two methods of determining transfer functions the model and the effects of all non-linear components are tested. The model is subjected to a variety sea-state, with different wave directions. Both methods offer similar results even though different approaches to determine the transfer functions are used. The selected method is capable of accurately predicting vessel offsets, although some extreme offsets are not captured. It is concluded that the presence of non-linear components have little to no effect on the DP offset as calculated by the time domain model. Because natural frequencies characteristic to these non-linear components are expected to exist at much higher frequencies that naturally present in second order wave drift forces. Thus, making a linear frequency domain model suitable for DP offset forecasting. It is advised to investigate the effect of including 2D input spectra as this is expected to improve the current model.<br/
Der gantze Psalter des hocherleuchteten Königes und Propheten Davids verdeutschet durch D. Martin Luthern [...]
No full textElektronische Reproduktion von: Der gantze Psalter des hocherleuchteten Königes und Propheten Davids verdeutschet durch D. Martin Luthern nebst einem ordentlichen Register über die Psalmen nach dem Alphabeth und einer zweyfachen Anweisung wie man sich des Psalters nützlich bedienen könne. - [S.l.], 1772. -
Standort: Universität Marburg, Bibliothek Evangelische Theologie [381] (Gesangbuchsammlung)
Signatur: PTh Dp LoE 1772 sekr. -
Bemerkungen: In Fraktur. -
Digitalisiert 201
Differentially Private GAN for Time Series
No full textGenerative Adversarial Networks (GANs) are a modern solution aiming to encourage public sharing of data, even if the data contains inherently private information, by generating synthetic data that looks like, but is not equal to, the data the GAN was trained on. However, GANs are prone to remembering samples from the training data, therefore additional care is needed to guarantee privacy. Differentially Private (DP) GANs offer a solution to this problem by protecting user privacy through a mathematical guarantee, achieved by adding carefully constructed noise at specific points in the training process. A state-of-the-art example of such a GAN is Gradient Sanitized Wasserstein GAN, (GS-WGAN), \cite{chen2021gswgan}. This model is shown to create higher quality synthetic images than other DP GANs. To extend the applicability of GS-WGAN we first reproduce and extend the evaluation, verifying that the model outperforms DP-CGAN by an average of 40\% when assessed across three qualitative metrics and two datasets. Secondly we propose improvements to the architecture and training procedure to make GS-WGAN applicable on timeseries data. The experimental results show that GS-WGAN is fit for generating synthetic timeseries through promising experimental results.[1] D. Chen, T. Orekondy, and M. Fritz, “Gs-wgan: A gradient-sanitized approach for learning differentially private generators,” 2021CSE3000 Research ProjectComputer Science and Engineerin
Martin Luter wobec Sacrum Imperium
No full textWe have a great literature about theology and political thought of Martin Luther, but the researchers of his political thoughts do not see in his writings the theory of international relations. The aim of this text is the presentation my thesis that this theory exists. It result from Luther's thesis that the rebel princes of the Sacred Empire are not the rebellious lords counter the emperor, but the sovereign monarchs of sovereign states. This text shows the evolution of Luther's position in this matter. First, Luther acknowledges the right of princes to rebel only in religious matters, then against the imperial "tyranny" (the argument from the "ancient constitution"), and c. 1530 he considers them full sovereigns. Relations between the territorial sovereigns and the emperor are based on the "law of nature". This idea makes Luther predecessor of the theory of international relations of Thomas Hobbes
BNN-DP: Robustness Certification of Bayesian Neural Networks via Dynamic Programming
No full textIn this paper, we introduce BNN-DP, an efficient algorithmic framework for analysis of adversarial robustness of Bayesian Neural Networks (BNNs). Given a compact set of input points T ⊂ Rn, BNN-DP computes lower and upper bounds on the BNN's predictions for all the points in T. The framework is based on an interpretation of BNNs as stochastic dynamical systems, which enables the use of Dynamic Programming (DP) algorithms to bound the prediction range along the layers of the network. Specifically, the method uses bound propagation techniques and convex relaxations to derive a backward recursion procedure to over-approximate the prediction range of the BNN with piecewise affine functions. The algorithm is general and can handle both regression and classification tasks. On a set of experiments on various regression and classification tasks and BNN architectures, we show that BNN-DP outperforms state-of-the-art methods by up to four orders of magnitude in both tightness of the bounds and computational efficiency.Team Luca Laurent
Die Bibel, oder die ganze Heilige Schrift des alten und neuen Testaments nach der deutschen Uebersetzung Dr. Martin Luthers. [Teil 1: Vorrede und Bücher des alten Testaments]
No full textElektronische Reproduktion von: Die Bibel, oder die ganze Heilige Schrift des alten und neuen Testaments / nach der deutschen Uebersetzung Dr. Martin Luthers. - 26. Auflage. - Halberstadt, Dölle, 1841. -
Standort: Universität Marburg, Bibliothek Evangelische Theologie [381] (Gesangbuchsammlung)
Signatur: PTh Dp Got 1836 sekr. -
Bemerkungen: In Fraktur. - Nur Teil 1 (Seite I - X,Seite 1 - 884) enthalten. -
Digitalisiert 201
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