Die Schule und die Religion der modernen Pädagogik

in Domsgen; Schluss, Henning; Spenn, Matthias (Eds.) Was gehen uns ‘die anderen’ an? Schule und Religion in der Säkularität (2012)

Model-based Product and Process Integration for Enhanced Collaboration during Mechatronic Design Processes

in 2nd Workshop on Process-based Approaches for Model-Driven Engineering PMDE, Copenhagen 2-5 July 2012 (2012)

The collaborative design of mechatronic systems is still a challenging task as di erent engineering disciplines have to be considered and coordinated during the design process. Here, an independent and ... [more ▼]

The collaborative design of mechatronic systems is still a challenging task as di erent engineering disciplines have to be considered and coordinated during the design process. Here, an independent and isolated view on discipline-speci c tools, model data and activities is not appropriate. So, the integration of these aspects for improved collaboration is still a remaining task in industry and research. Former research have already developed rst solutions each directing into the integration of distinct aspects among the involved disciplines. This paper claims that a comprehensive view on the di erent aspects can bring signi cant bene ts for the design of mechatronic systems. In detail, it presents an approach which combines interdisciplinary system modeling with design activity management by describing and integrating these aspects on metalevel. This integration leads automatically to enhanced possibilities for design activity coordination and monitoring. [less ▲]

Isotope pattern deconvolution for peptide mass spectrometry by non-negative least squares/least absolute deviation template matching.

in BMC Bioinformatics (2012), 13(291),

Background The robust identification of isotope patterns originating from peptides being analyzed through mass spectrometry (MS) is often significantly hampered by noise artifacts and the interference of ... [more ▼]

Background The robust identification of isotope patterns originating from peptides being analyzed through mass spectrometry (MS) is often significantly hampered by noise artifacts and the interference of overlapping patterns arising e.g. from post-translational modifications. As the classification of the recorded data points into either ‘noise’ or ‘signal’ lies at the very root of essentially every proteomic application, the quality of the automated processing of mass spectra can significantly influence the way the data might be interpreted within a given biological context. Results We propose non-negative least squares/non-negative least absolute deviation regression to fit a raw spectrum by templates imitating isotope patterns. In a carefully designed validation scheme, we show that the method exhibits excellent performance in pattern picking. It is demonstrated that the method is able to disentangle complicated overlaps of patterns. Conclusions We find that regularization is not necessary to prevent overfitting and that thresholding is an effective and user-friendly way to perform feature selection. The proposed method avoids problems inherent in regularization-based approaches, comes with a set of well-interpretable parameters whose default configuration is shown to generalize well without the need for fine-tuning, and is applicable to spectra of different platforms. The R package IPPD implements the method and is available from the Bioconductor platform (http://bioconductor.fhcrc.org/help/bioc-views/devel/bioc/html/IPPD.html) [less ▲]

An analysis of the utilization of video-based media in science teacher education

in Fraser, B; Tobin, K; Campbell, C (Eds.) International handbook of science teaching and learning (2012)

In this chapter, we examine trends involving video usage in science teacher education and science education research. We tracing some developments in video technologies and explore examples of the ways in ... [more ▼]

In this chapter, we examine trends involving video usage in science teacher education and science education research. We tracing some developments in video technologies and explore examples of the ways in which video/multimedia have been utilized in the education of science teachers. We conclude the review by summarizing our findings, and then offer implications for future research on the utilization of video and multimedia technologies in the preparation and professional development of science teachers. Specifically we raise questions and considerations for future research as it relates to science teacher education and research in science education. [less ▲]

Une «écologie du plurilinguisme» : les classes multiculturelles au Luxembourg

in Trépos, Jean-Yves (Ed.) Les dispositifs modestes du souci. Expérimentation, réflexivité et modélisation dans l'intervention sociale (2012)

Merging the Quality Assessment of Processes and Products in Automotive Domain

in Proceedings of the 13th International Conference on Product-Focused Software Process Improvement (PROFES 2012) (2012)

Bypassing the Combinatorial Explosion: Using Similarity to Generate and Prioritize T-wise Test Suites for Large Software Product Lines

Report (2012)

Software Product Lines (SPLs) are families of products whose commonalities and variability can be captured by Feature Models (FMs). T-wise testing aims at finding errors triggered by all interactions ... [more ▼]

Software Product Lines (SPLs) are families of products whose commonalities and variability can be captured by Feature Models (FMs). T-wise testing aims at finding errors triggered by all interactions amongst t features, thus reducing drastically the number of products to test. T-wise testing approaches for SPLs are limited to small values of t -- which miss faulty interactions -- or limited by the size of the FM. Furthermore, they neither prioritize the products to test nor provide means to finely control the generation process. This paper offers (a) a search-based approach capable of generating products for large SPLs, forming a scalable and flexible alternative to current techniques and (b) prioritization algorithms for any set of products. Experiments conducted on 124 FMs (including large FMs such as the Linux kernel) demonstrate the feasibility and the practicality of our approach. [less ▲]

Ne pas réinventer la roue! L'éducation multilingue au Pays Basque et en Afrique du Sud (et les leçons qu'on peut en tirer)

in Forum für Politik, Gesellschaft und Kultur in Luxemburg (2012), 324

Magnetic neutron scattering on nanocomposites: Decrypting cross-section images using micromagnetic simulations

in Physical Review. B, Condensed Matter and Materials Physics (2012), 85(134418), 1-5

Monitoring and Predicting Hardware Failures in HPC Clusters with FTB-IPMI

in Proceedings of the 2012 IEEE 26th International Parallel and Distributed Processing Symposium Workshops & PhD Forum (2012)

Fault-detection and prediction in HPC clusters and Cloud-computing systems are increasingly challenging issues. Several system middleware such as job schedulers and MPI implementations provide support for ... [more ▼]

Fault-detection and prediction in HPC clusters and Cloud-computing systems are increasingly challenging issues. Several system middleware such as job schedulers and MPI implementations provide support for both reactive and proactive mechanisms to tolerate faults. These techniques rely on external components such as system logs and infrastructure monitors to provide information about hardware/software failure either through detection, or as a prediction. However, these middleware work in isolation, without disseminating the knowledge of faults encountered. In this context, we propose a light-weight multi-threaded service, namely FTB-IPMI, which provides distributed fault-monitoring using the Intelligent Platform Management Interface (IPMI) and coordinated propagation of fault information using the Fault-Tolerance Backplane (FTB). In essence, it serves as a middleman between system hardware and the software stack by translating raw hardware events to structured software events and delivering it to any interested component using a publish-subscribe framework. Fault-predictors and other decision-making engines that rely on distributed failure information can benefit from FTB-IPMI to facilitate proactive fault-tolerance mechanisms such as preemptive job migration. We have developed a fault-prediction engine within MVAPICH2, an RDMA-based MPI implementation, to demonstrate this capability. Failure predictions made by this engine are used to trigger migration of processes from failing nodes to healthy spare nodes, thereby providing resilience to the MPI application. Experimental evaluation clearly indicates that a single instance of FTB-IPMI can scale to several hundreds of nodes with a remarkably low resource-utilization footprint. A deployment of FTB-IPMI that services a cluster with 128 compute-nodes, sweeps the entire cluster and collects IPMI sensor information on CPU temperature, system voltages and fan speeds in about 0.75 seconds. The average CPU utilization of this service running on a single node is 0.35%. [less ▲]