@inproceedings{OPUS4-8426,
  title     = {Wolf-Rayet Stars},
  editor    = {Hamann, Wolf-Rainer and Sander, Andreas Alexander Christoph and Todt, Helge Tobias},
  publisher = {Universit{\"a}tsverlag Potsdam},
  address   = {Potsdam},
  url       = {http://nbn-resolving.de/urn:nbn:de:kobv:517-opus4-84268},
  year      = {2015},
  abstract  = {Nearly 150 years ago, the French astronomers Charles Wolf and Georges Rayet described stars with very conspicuous spectra that are dominated by bright and broad emission lines. Meanwhile termed Wolf-Rayet Stars after their discoverers, those objects turned out to represent important stages in the life of massive stars. As the first conference in a long time that was specifically dedicated to Wolf-Rayet stars, an international workshop was held in Potsdam, Germany, from 1.-5. June 2015. About 100 participants, comprising most of the leading experts in the field as well as as many young scientists, gathered for one week of extensive scientific exchange and discussions. Considerable progress has been reported throughout, e.g. on finding such stars, modeling and analyzing their spectra, understanding their evolutionary context, and studying their circumstellar nebulae. While some major questions regarding Wolf-Rayet stars still remain open 150 years after their discovery, it is clear today that these objects are not just interesting stars as such, but also keystones in the evolution of galaxies. These proceedings summarize the talks and posters presented at the Potsdam Wolf-Rayet workshop. Moreover, they also include the questions, comments, and discussions emerging after each talk, thereby giving a rare overview not only about the research, but also about the current debates and unknowns in the field. The Scientific Organizing Committee (SOC) included Alceste Bonanos (Athens), Paul Crowther (Sheffield), John Eldridge (Auckland), Wolf-Rainer Hamann (Potsdam, Chair), John Hillier (Pittsburgh), Claus Leitherer (Baltimore), Philip Massey (Flagstaff), George Meynet (Geneva), Tony Moffat (Montreal), Nicole St-Louis (Montreal), and Dany Vanbeveren (Brussels).},
  language  = {en}
}
@inproceedings{Szeifert2007,
  author    = {Szeifert, T.},
  title     = {Wind variabilities and asymmetries in Luminous Blue Variables},
  url       = {http://nbn-resolving.de/urn:nbn:de:kobv:517-opus-18146},
  year      = {2007},
  abstract  = {Luminous Blue Variables show strong changes in their stellar wind on time scales of typically years to decades when they expand and contract radially at approximately constant luminosity. Micro-variability on shorter time scales and amplitudes can be observed superimposed to the larger scale radial changes. I will show long-term time series of high resolution spectra which we have collected in the past 20 years for many of the well known LBVs together with a few time series of weekly sampling (HR Car, R40, R71, R110, R127, S Dor) covering a time windows of up to a few months. Wind variability is seen on short and intermediate time scales with the line profiles changing from P Cygni to inverse P Cygni and double peeked profiles sometimes for the same star and spectral line. On longer time scales the ionisation levels for all chemical elements change drastically due to the strong change of the temperature on the stellar surface. While on the long term the characteristic radial changes may have impact on the over all mass loss rates, the variabilities and asymmetries on short and intermediate time scales may cause false estimates of the mass loss rates when confronting models with the observed line profiles},
  language  = {en}
}
@inproceedings{Weis2007,
  author    = {Weis, K.},
  title     = {Wind relics : clumps, inhomogeneities and outflows in LBV nebulae},
  url       = {http://nbn-resolving.de/urn:nbn:de:kobv:517-opus-18235},
  year      = {2007},
  abstract  = {The most massive stars are those with the shortest but most active life. One group of massive stars, the Luminous Blue Variables (LBVs), of which only a few objects are known, are in particular of interest concerning the stability of stars. They have a high mass loss rate and are close to being instable. This is even more likely as rotation becomes an important factor in stellar evolution of these stars. Through massive stellar winds and sometimes giant eruptions, LBV nebulae are formed. Various aspects in the evolution in the LBV phase lead, beside the large scale morphological and kinematical differences, to a diversity of small structures like clumps, rims, and outflows in these nebulae.},
  language  = {en}
}
@inproceedings{Marchenko2007,
  author    = {Marchenko, S. V.},
  title     = {Wind inhomogeneities in low-Z environment : observations},
  url       = {http://nbn-resolving.de/urn:nbn:de:kobv:517-opus-17769},
  year      = {2007},
  abstract  = {We discuss the results of time-resolved spectroscopy of three presumably single Population I Wolf-Rayet stars in the Small Magellanic Cloud, where the ambient metallicity is \$\sim 1/5 Z_\odot\$. We were able to detect and follow numerous small-scale wind-embedded inhomogeneities in all observed stars. The general properties of the moving features, such as their velocity dispersions, emissivities and average accelerations, closely match the corresponding characteristics of small-scale inhomogeneities in the winds of Galactic Wolf-Rayet stars.},
  language  = {en}
}
@inproceedings{KrausKubatKrtička2007,
  author    = {Kraus, M. and Kub{\´a}t, Jiř{\´i} and Krtička, Jiri},
  title     = {Wind emission of OB supergiants and the influence of clumping},
  url       = {http://nbn-resolving.de/urn:nbn:de:kobv:517-opus-17757},
  year      = {2007},
  abstract  = {The influence of the wind to the total continuum of OB supergiants is discussed. For wind velocity distributions with β > 1.0, the wind can have strong influence to the total continuum emission, even at optical wavelengths. Comparing the continuum emission of clumped and unclumped winds, especially for stars with high β values, delivers flux differences of up to 30\% with maximum in the near-IR. Continuum observations at these wavelengths are therefore an ideal tool to discriminate between clumped and unclumped winds of OB supergiants.},
  language  = {en}
}
@inproceedings{Bartle2008,
  author    = {Bartle, Richard},
  title     = {When openness closes : the line between play and design},
  url       = {http://nbn-resolving.de/urn:nbn:de:kobv:517-opus-24536},
  year      = {2008},
  abstract  = {One of the informal properties often used to describe a new virtual world is its degree of openness. Yet what is an "open" virtual world? Does the phrase mean generally the same thing to different people? What distinguishes an open world from a less open world? Why does openness matter anyway? The answers to these questions cast light on an important, but shadowy, and uneasy, topic for virtual worlds: the relationship between those who construct the virtual, and those who use these constructions.},
  language  = {en}
}
@inproceedings{Rapp2015,
  author    = {Rapp, Michael Armin},
  title     = {When Local Poverty is More Important Than Your Income: Migrant Mental Health in Inner Cities},
  series = {European psychiatry : the journal of the Association of European Psychiatrists},
  volume    = {30},
  booktitle = {European psychiatry : the journal of the Association of European Psychiatrists},
  publisher = {Elsevier},
  address   = {Paris},
  issn      = {0924-9338},
  pages     = {1},
  year      = {2015},
  language  = {en}
}
@inproceedings{Apelojg2019,
  author    = {Apelojg, Benjamin},
  title     = {What´s going on?! Needs and emotions during classes},
  series = {9th International Conference on Society and Information Technologies (ICSIT 2018)},
  booktitle = {9th International Conference on Society and Information Technologies (ICSIT 2018)},
  number    = {1},
  publisher = {Curran Associates},
  address   = {Red Hook},
  isbn      = {978-1-5108-9702-1},
  pages     = {85 -- 88},
  year      = {2019},
  abstract  = {The "output-orientation" is omnipresent in teacher education. In order to evaluate teachers' and students' performances, a wide range of different quantitative questionnaires exist worldwide. One important goal of teaching evaluation is to increase the quality of teaching and learning. The author argues, that standard evaluations which are typically made at the end of the semester are problematic due to two reasons. The first one is that some of the questions are too general and don`t offer concrete ideas as to what kind of actions can be taken to make the courses better. The second problem is that the evaluation is mostly made when the course is already over. Because of this criticism, Apelojg invented the Felix-App which offers the possibility to give feedback in real-time by asking for the emotions and needs that occur during different learning situations. The idea is very simple: positive emotions and satisfied needs are helpful for the learning process. Negative emotions and unsatisfied needs have negative effects on the learning process. First descriptive results show, that "managing emotions" during classes can have positive effects on both motivation and emotions.},
  language  = {en}
}
@inproceedings{Zhou2010,
  author    = {Zhou, Neng-Fa},
  title     = {What I have learned from all these solver competitions},
  url       = {http://nbn-resolving.de/urn:nbn:de:kobv:517-opus-41431},
  year      = {2010},
  abstract  = {In this talk, I would like to share my experiences gained from participating in four CSP solver competitions and the second ASP solver competition. In particular, I'll talk about how various programming techniques can make huge differences in solving some of the benchmark problems used in the competitions. These techniques include global constraints, table constraints, and problem-specific propagators and labeling strategies for selecting variables and values. I'll present these techniques with experimental results from B-Prolog and other CLP(FD) systems.},
  language  = {en}
}
@inproceedings{ErmakovaFabianBenderetal.2018,
  author    = {Ermakova, Tatiana and Fabian, Benjamin and Bender, Benedict and Klimek, Kerstin},
  title     = {Web Tracking},
  series = {Proceedings of the Annual Hawaii International Conference on System Sciences (HICSS 51)},
  booktitle = {Proceedings of the Annual Hawaii International Conference on System Sciences (HICSS 51)},
  publisher = {HICSS Conference Office University of Hawaii at Manoa},
  address   = {Maile Way},
  issn      = {2572-6862},
  doi       = {10.24251/HICSS.2018.596},
  pages     = {4732 -- 4741},
  year      = {2018},
  abstract  = {Web tracking seems to become ubiquitous in online business and leads to increased privacy concerns of users. This paper provides an overview over the current state of the art of web-tracking research, aiming to reveal the relevance and methodologies of this research area and creates a foundation for future work. In particular, this study addresses the following research questions: What methods are followed? What results have been achieved so far? What are potential future research areas? For these goals, a structured literature review based upon an established methodological framework is conducted. The identified articles are investigated with respect to the applied research methodologies and the aspects of web tracking they emphasize.},
  language  = {en}
}