30 research outputs found

    A Performance Comparison Using HPC Benchmarks: Windows HPC Server 2008 and Red Hat Enterprise Linux 5

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    This document was developed with support from the National Science Foundation (NSF) under Grant No. 0910812 to Indiana University for ”FutureGrid: An Experimental, High-Performance Grid Test-bed.” Any opinions, findings, and conclusions or recommendations expressed in this material are those of the author(s) and do not necessarily reflect the views of the NSF.A collection of performance benchmarks have been run on an IBM System X iDataPlex cluster using two different operating systems. Windows HPC Server 2008 (WinHPC) and Red Hat Enterprise Linux v5.4 (RHEL5) are compared using SPEC MPI2007 v1.1, the High Performance Computing Challenge (HPCC) and National Science Foundation (NSF) acceptance test benchmark suites. Overall, we find the performance of WinHPC and RHEL5 to be equivalent but significant performance differences exist when analyzing specific applications. We focus on presenting the results from the application benchmarks and include the results of the HPCC microbenchmark for completeness

    Implications of culture on learning and teaching: Management skills and business administration in the ‘Joint International IT Master program’ in Halmstad, Lemgo and Esbjerg

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    Mertens C, Doleschal R. Implications of culture on learning and teaching: Management skills and business administration in the ‘Joint International IT Master program’ in Halmstad, Lemgo and Esbjerg. In: Schmalzer T, Apfelthaler G, Hansen K, Singh R, eds. Intercultural communication competence . Learn international . Delhi: MacMillan; 2007: 92-109

    New system for fast submicron optical direct writing

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    We report on a new system for submicron lithography by fast laser direct writing, where a programmable phase modulating spatial light modulator (SLM) is imaged onto the wafer using flash on the fly exposure with an excimer laser light source.A SLM with 512x464 pixels has been developed and fabricated using a CMOS active matrix and a reflective, deformable viscoelastic layer on top. Using this light modulator for image generation a demonstrator exposure tool for 0.6 mu m minimum feature size has been set up and tested including all the components necessary for the exposure of a complete lithographic layer from CAD layout data. the demonstrator is shown to give good quality 0.6 mu m photoresist pattern at a throughput of roughly one 4-inch-wafer per hour. Based on the demonstrator results we are designing and setting up a prototype of a production tool with an increased throughput of up to nine 6-inch-wafer per hour including an automatic alignment system and an automatic wafer handler

    Deformable micromirror devices as phase modulation high resolution light valves

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    We report on two different technologies for deformable micromirror devices as phase-modulating light valves for high-resolution optical applications. Both technologies are compatible with a 30V CMOS technology for active matrix addressing. We have developed and fabricated a 512 x 464 pixel light valve with CMOS addressing and viscoelastic layer deformable mirrors on top. The performance of the light valve has been demonstrated by an application for fast submicron laser direct writing. Furthermore, we report promising results on cantilever-type deformable mirrors to be integrated with the CMOS active matrix

    Clinical outcome in patients with carcinoma of the esophagogastric junction treated with neoadjuvant radiochemotherapy or perioperative chemotherapy: a two-enter retrospective analysis

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    BACKGROUND: Adenocarcinoma of the esophagogastric junction (AEG) is a rare but rising tumor entity in the Western world. Treatment is complex, as multimodality is key to optimal results. However, trials solely including AEG are rare, and the question if neoadjuvant radiochemotherapy (NRCT) or neoadjuvant/perioperative chemotherapy (NACT) is superior remains unanswered. PATIENTS AND METHODS: Patients with AEG I–III treated between October 2010 and August 2019 at the Ordensklinikum Linz or the Kepler University Hospital were identified either from a monitored tumor registry or by chart review. Time-to-event data were analyzed by Kaplan-Meier product limit estimation. The Kruskal-Wallis test and Fisher’s exact test were used for comparing continuous and categorical data, respectively. RESULTS: A total of 85 patients (median age 63 years; median Charlson Comorbidity Index 3; 98.8% ECOG PS 0–1) were analyzed. Of these, 52 patients received NRCT (81% CROSS protocol) and 33 NACT (65% EOX and 35% FLOT protocol). There was a significantly higher pathological complete response rate in the NRCT group (30 vs. 12%; p = 0.010); distant relapse rates were higher in the NRCT group and local relapse rates were higher in the NACT group (both not significant). These differences, however, did not translate into a different disease-free survival (20 months; 95% CI: 13–34) or overall survival (44 months; 95% CI: 33–NA). Patients >65 years old had the same advantage from treatment as patients <65 years of age. CONCLUSIONS: Although treatment of AEG is complex, the progress documented over the last centuries can be reproduced in our real-life setting. Data regarding the superiority of either type of neoadjuvant/perioperative treatment are sparse. We assume no difference between EOX-based NACT and NRCT
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