„Liquid church“ – und Partizipation in Kirche und Gemeinde

Liquid church sucht einen Unterschied zu ent-decken: Ehemals „Festes“ verflüssigt sich.Gläubige suchen und schaffen sich in Kirche ihre Partizipation. Sie bahnen sich ein neues„Flussbett“ für ihr Leben- und Glauben-Können. Kirchenleitende geben teils aus theologischerEinsicht, teils wegen der Macht des Faktischen starre Positionen auf. In diesem Prozesskommen zwangsläufig auch Leitungsformen in Fluss. Liquid church bedeutet dann zum Beispiel,Verantwortung nicht nur zu delegieren, sondern wirklich zu teilen. Die wichtigste Fragejedoch bleibt, wohin die Kraft und der Trost einer liquid church fließen? Mit welcher Option istdie neue Praxis am Start?Liquid church attempts to find a difference: What has formerly been solid is now liquefying.Believers are searching and creating participation in their churches. They create new „riverbeds“for their lives and beliefs. Leaders of the church give up their rigid positions, partly becauseof theological insights, partly due to the power of the actual facts. During this process,styles of leadership become liquid as well. Therefore, liquid church does not merely mean todelegate responsibility but to truly share it. But the most important questions remains: Wheredo the strength and the comfort of a liquid church flow? Which option does the new approachof liquid church bring to the table

Delay Compensation for Real Time Disturbance Estimation at Extremely Large Telescopes

In ground-based astronomy, aberrations due to structural vibrations, such as piston, limit the achievable resolution and cannot be corrected using adaptive optics (AO) for large telescopes. We present a model-free strategy to estimate and compensate piston aberrations due to the vibrations of optical components using accelerometer disturbance feed forward, eventually allowing the use of fainter guide stars both for the fringe detector and in the AO loop. Because the correction performance is very sensitive to signal delays, we present a strategy to add a delay compensation to the developed disturbance estimator, which can, in principle, be applied to many other applications outside of astronomy that lack observer performance due to a measurement delay or need a prediction to compensate for input delays. The ability to estimate vibration disturbances in the critical frequency range of 8-60 Hz is demonstrated with on sky data from the Large Binocular Telescope (LBT) Interferometer, an interferometer at the LBT. The experimental results are promising, indicating the ability to suppress differential piston induced by telescope vibrations by a factor of about 3 (rms), which is significantly better than any currently commissioned system

Non-1/m_b^n Power Suppressed Contributions to Inclusive b->s l+ l- Decays

We compute non-perturbative contributions to b->s l+ l- that are not explicitly suppressed by powers of the b-quark mass. They are proportional to lambda_2 and arise from an interference between the free-quark amplitude and higher order terms in the matrix element of a four-quark operator. This correction is found to be small over most of the dalitz plot except near the charm threshold. Unfortunately, the perturbative computation we have performed is invalid near charm threshold and we do not except to see the structure found at lowest order reproduced in the data. We conclude that these non-perturbative contributions do not significantly modify the previous analysis of b->s l+ l-.Comment: 8 pages, 3 figures, late

A laser-based direct cable length measurement sensor for CDPRs

Accuracy improvement is an important research topic in the field of cable-driven parallel robots (CDPRs). One reason for inaccuracies of CDPRs are deviations in the cable lengths. Such deviations can be caused by the elongation of the cable due to its elasticity or creep behavior. For most common CDPRs, the cable lengths are controlled using motor encoders of the winches, without feedback about the actual elongation of the cables. To address this problem, this paper proposes a direct cable length measurement sensor based on a laser distance sensor. We present the mechanical design, the first prototype and an experimental evaluation. As a result, the measurement principle works well and the accuracy of the measured cable lengths is within -2.32 mm to +1.86 mm compared to a range from -5.19 mm to +6.02 mm of the cable length set with the motor encoders. The standard deviation of the cable length error of the direct cable length measurement sensor is 58% lower compared to the one set with the motor encoders. Equipping all cables of the cable robot with direct cable length measurement sensors results in the possibility to correct cable length deviations and thus increase the accuracy of CDPRs. Furthermore, it enables new possibilities like the automatic recalibration of the home pose

Die Rechenbrücke - ein fachbereichsübergreifendes Forschungs- und Entwicklungsprojekt

"Eigentlich fehlen unseren Studierenden vor allem Rechenfertigkeiten aus der Sekundarstufe I, bevor sie mit dem Ingenieurstudium beginnen können." Dieses Zitat eines Mathematikprofessors beschreibt die Ausgangssituation an der Fachhochschule Münster zur Initiierung eines fachbereichsübergreifenden Brückenangebots im Bereich Mathematik. Das Projekt Rechenbrücke baut auf Erfahrungen mit diversen Unterstützungskonzepten an der Hochschule auf und nutzt von Anfang an mathematikdidaktische Expertise zur Etablierung eines neuen, umfassenden Konzepts, das nachfolgend vorgestellt wird. Darüber hinaus können erste Evaluationsergebnisse aus der Pilotstudie präsentiert werden. 10.11.2014 | Ronja Kürten, Gilbert Greefrath, Thilo Harth & Martin Pott-Langemeyer (Münster

A comprehensive microarray-based DNA methylation study of 367 hematological neoplasms

Background: Alterations in the DNA methylation pattern are a hallmark of leukemias and lymphomas. However, most epigenetic studies in hematologic neoplasms (HNs) have focused either on the analysis of few candidate genes or many genes and few HN entities, and comprehensive studies are required. Methodology/Principal Findings: Here, we report for the first time a microarray-based DNA methylation study of 767 genes in 367 HNs diagnosed with 16 of the most representative B-cell (n = 203), T-cell (n = 30), and myeloid (n = 134) neoplasias, as well as 37 samples from different cell types of the hematopoietic system. Using appropriate controls of B-, T-, or myeloid cellular origin, we identified a total of 220 genes hypermethylated in at least one HN entity. In general, promoter hypermethylation was more frequent in lymphoid malignancies than in myeloid malignancies, being germinal center mature B-cell lymphomas as well as B and T precursor lymphoid neoplasias those entities with highest frequency of gene-associated DNA hypermethylation. We also observed a significant correlation between the number of hypermethylated and hypomethylated genes in several mature B-cell neoplasias, but not in precursor B- and T-cell leukemias. Most of the genes becoming hypermethylated contained promoters with high CpG content, and a significant fraction of them are targets of the polycomb repressor complex. Interestingly, T-cell prolymphocytic leukemias show low levels of DNA hypermethylation and a comparatively large number of hypomethylated genes, many of them showing an increased gene expression. Conclusions/Significance: We have characterized the DNA methylation profile of a wide range of different HNs entities. As well as identifying genes showing aberrant DNA methylation in certain HN subtypes, we also detected six genes—DBC1, DIO3, FZD9, HS3ST2, MOS, and MYOD1—that were significantly hypermethylated in B-cell, T-cell, and myeloid malignancies. These might therefore play an important role in the development of different HNs

ASTRA: ASTrometry and phase-Referencing Astronomy on the Keck interferometer

ASTRA (ASTrometric and phase-Referencing Astronomy) is an upgrade to the existing Keck Interferometer which aims at providing new self-phase referencing (high spectral resolution observation of YSOs), dual-field phase referencing (sensitive AGN observations), and astrometric (known exoplanetary systems characterization and galactic center general relativity in strong field regime) capabilities. With the first high spectral resolution mode now offered to the community, this contribution focuses on the progress of the dual field and astrometric modes.Comment: 10 pages, 6 figures, 2 tables, SPIE 201

A complex dust morphology in the high-luminosity AGN Mrk 876

Recent models for the inner structure of active galactic nuclei (AGN) advocate the presence of a radiatively accelerated, dusty outflow launched from the outer regions of the accretion disk. Here we present the first near-infrared (near-IR) variable (rms) spectrum for the high-luminosity, nearby AGN Mrk 876. We find that it tracks the accretion disk spectrum out to longer wavelengths than the mean spectrum due to a reduced dust emission. The implied outer accretion disk radius is consistent with the infrared results predicted by a contemporaneous optical accretion disk reverberation mapping campaign and much larger than the self-gravity radius. The reduced flux variability of the hot dust could be either due to the presence of a secondary, constant dust component in the mean spectrum or introduced by the destructive superposition of the dust and accretion disk variability signals or some combination of both. Assuming thermal equilibrium for optically thin dust, we derive the luminosity-based dust radius for different grain properties using our measurement of the temperature. We find that in all cases considered the values are significantly larger than the dust response time measured by IR photometric monitoring campaigns, with the least discrepancy present relative to the result for a wavelength-independent dust emissivity law, i.e. a blackbody, which is appropriate for large grain sizes. This result can be well explained by assuming a flared, disk-like structure for the hot dust.Comment: 18 pages, 7 figures; accepted to Ap