Münster University of Applied Sciences

About: Münster University of Applied Sciences is a education organization based out in Münster, Germany. It is known for research contribution in the topics: Luminescence & Laser. The organization has 694 authors who have published 1067 publications receiving 12597 citations.

Parallelizing OMNeT++ simulations using Xgrid

Abstract: Working with simulations, testing and validating theories often requires a large number of simulation runs. The discrete event simulation environment OMNeT++ already provides functionality for distributed computing, yet the simulated model and modules to be parallelized have to be declared manually. Apple Mac OS X comes with Xgrid support, which allows easily setting up an ad hoc grid for parallel computing. In this paper we will describe the features we had to add to OMNeT++ to be able to use Xgrid to parallelize even several thousand runs. We will point out how to use Xgrid to distribute runs of a simulation not only to multiple CPU cores but also to multiple machines without modifying the simulation itself. Our analysis will reveal that Xgrid allows to reduce the computing time almost proportional to the added parallel computing power.

University-Business Cooperation Outcomes and Impacts - A European Perspective

Abstract: University-Business Cooperation Outcomes and Impacts University-Business Cooperation (UBC) is gaining importance within European HEIs, and increasing amounts of resources are invested in it, by the HEIs themselves and governments at different levels. In the face of rising scrutiny of their contribution to society, universities, and the governments funding them, are increasingly challenged to justify the organisational and societal outcomes and impacts of UBC. However, until now, methods for evaluating UBC have failed to capture its full value and complexity. This paper explores the topic and history of UBC outcome and impact evaluation, highlights some often overlooked factors that require further consideration, and suggests a preliminary framework for standardised evaluation of UBC outcomes and impacts.

Verfahren zur identifizierung von kunststoffen

Abstract: Die Erfindung betrifft ein Verfahren zur Identifizierung von Kunststoffen durch Dotieren eines Kunststoffs mit Metallen bzw Metallderivaten, Verarbeiten des Kunststoffs zu einem Formkorper und quantitative Analyse der eingebrachten Metalle bzw Metallderivate mittels einer Analysemethode, die eine Vermessung von festem Probenmaterial ermoglicht Die Erfindung betrifft ferner einen Standardsatz zur Kalibrierung eines Analysegerats, das in den vorstehend genannten Verfahren verwendet werden kann, umfassend mindestens zwei Kalibrierstandards, wobei jeder Kalibrierstandard einen Kunststoffformkorper enthalt, der mit mindestens einem Metall ausgewahlt aus La, Ce, Pr, Nd, Sm, Eu, Gd, Tb, Dy, Ho, Er, Tm, Yb, Lu, Hf, Ta, W, Re, Sc, Ir, Pt, Rh, Au, Os und V dotiert ist

A facile synthesis of alloyed Mn-doped ZnSeS nanoparticles using a modified selenium/sulfur precursor in a one-pot approach

Abstract: Highly luminescent Mn doped ZnSeS nanoparticles have been synthesized using a modified Se/S-precursor solution in a facile one-pot approach. The main challenge of the phosphine-free synthesis of metal selenide nanoparticles is the solubility and reduction of elemental selenium in organic solvents without the use of alkylphosphine. Herein, we report on a highly reactive Se/S precursor solution with NaBH4, which is suitable for the reproducible synthesis of alloyed structures like ZnSeS in a one-pot approach. Hitherto, the synthesis of core/shell and alloyed ZnSe nanoparticles like ZnSe:Mn/ZnS has required at least two steps with time consuming purification steps. This modified Se/S-precursor facilitates the synthesis of highly luminescent alloyed nanostructures in view of time and purification steps. The as-synthesized alloyed ZnSeS:Mn nanoparticles possess small size and high quality optical properties with up to 42% photoluminescence (PL) quantum yield (QY). Distinctive features in the PL spectra indicate the usability of the modified Se/S-precursor solution for the synthesis of alloyed structures. Besides this, the ratio of S to Se significantly affected the PL QY of the nanoparticles. ICP-MS/ICP-OES, EDX and XPS measurements indicate the formation of alloyed ZnSeS:Mn nanoparticles, using the modified precursor.