Correction: The role of cumulative physical work load in symptomatic knee osteoarthritis – a case–control study in Germany (Seidler et al. 2008)

ABSTRACT: In the original paper (Seidler et al. 2008), there is a mistake in the results of the occupational group analysis. This mistake occurred when the core data set was merged with the occupational group data. According to the modified occupational group analysis (see modified Table 1), OR for chemical processers and manufacturers of plastics products are no longer significantly elevated. Having worked more than 10 years as metal worker is associated with knee osteoarthritis (OR=2.2; 95% CI 1.1-4.4). The knee osteoarthritis risk of plasterers, insulators, glaziers, terrazzo workers, construction carpenters, roofers, and upholsters approaches statistical significance in the long-duration category (OR=3.7; 95% CI 0.9-15.2). For woodworkers, the knee osteoarthritis risk is no longer significantly elevated. Having worked more than 10 years as painter or varnisher is associated with knee osteoarthritis (OR=9.6; 95% CI 1.2-77.9). Finally, we find a significantly elevated OR of 3.2 (95% CI 1.1-9.1) among subjects having worked as physically exposed service workers (storemen, nurses, refuse collectors) for more than 10 years. When subjects with non-service work as main occupation ("blue-collar workers") are compared with "white-collar workers", the odds ratio for knee osteoarthritis is still significantly elevated (OR=2.0; 95% CI 1.3-2.9)

Von Bertolt Brechts Radiotheorie zu den sozialen Medien. Theoretische und historische Verbindungslinien und Reflexionsanstöße für den Deutschunterricht in ein er digitalisierten Gesellschaft

Der Beitrag widmet sich zunächst historischen Phasen der Medienentwicklung sowie den diese begleitenden medienkritischen Diskursen. Ausgangspunkt sind dabei Bertolt Brechts utopische Vorstellungen zur Verwendung des damals neuen Mediums Radio in den 1920er Jahren. Brecht forderte eine die Hörerschaft beteiligende interaktive Verwendung des medialen Apparats, die er mit der Hoffnung auf eine demokratischere Gesellschaft verband. Im historischen Vergleich werden dann Parallelen zwischen Brechts radiotheoretischen Überlegungen und den Erwartungen auf-gezeigt, die sich in den 1990er Jahren mit der Ausbreitung des Internets verbanden. Verfolgt man den Diskurs um die politischen und kulturellen Auswirkungen des Internets bis in die Gegenwart, dann zeigt sich, wie utopische Erwartungen in dystopische Befürchtungen umschlagen. Diesen Beobachtungen zur Seite gestellt wird eine knappe Darstellung von Brechts praktischen Versuchen zur „interaktiven“ Nutzung des Radios für die Aufführung literarischer Texte. Das wichtigste Beispiel hierfür ist Brechts Radiolehrstück „Der Flug der Lindbergs“. Sowohl Brechts experimentelle Verwendung des Radios als auch die technikbegeisterte Botschaft des Stückes wirken aus heutiger Sicht befremdlich, geben aber gerade dadurch Anregung zum Nachdenken über das Verhältnis von Mensch, Technik und Natur.   Abstract (english): From Bertolt Brecht‘s radio theory to social media. Theoretical and historical connections and food for thought for teaching German in a digitalised society The article is first devoted to historical phases of media development and the ac-companying discourses of media criticism. The starting point is Bertolt Brecht‘s utopian ideas on the use of the then new medium of radio in the 1920s. Brecht called for an interactive use of the media apparatus that would involve the listeners, which he linked to the hope for a more democratic society. A historical comparison then reve-als parallels between Brecht‘s radio theoretical considerations and the expectations associated with the spread of the Internet in the 1990s. If one follows the discourse on the political and cultural effects of the Internet up to the present, it becomes apparent how utopian expectations turn into dystopian fears. These observations are juxtaposed with a concise account of Brecht‘s practical attempts at „interactive“ use of radio for the performance of literary texts. The most important example of this is Brecht‘s radio play Der Flug der Lindbergs. This is devoted in content to another new technology of the early 20th century, namely airplane technology. Both Brecht‘s experimental use of radio in the performance of the play and the celebration of flying as a triumph of man and technology over nature in terms of content seem disconcerting from today‘s perspective, however, and provide food for thought about the relation-ship between man, technology, and nature as well as the meaningful use of media

Computerspiele im Videoclip rezensieren und reflektieren

Der Beitrag widmet sich dem medialen Format von Video-Rezensionen zu Computerspielen, wie es auf professionellen Plattformen zur Spielekritik verwendet wird. Beleuchtet werden dabei die praktischen und reflektierenden Arbeitsschritte, die von Lernenden zu leisten sind, um selbst eine Computerspielkritik in dieser Form zu erstellen, sowie die Verbindungen zum spezifischen Bildungsauftrag des Deutsch-unterrichts, die sich bei einem solchen Projekt erkennen lassen

Geschlechterdifferenzen bei der literarischen Rezeption unter besonderer Berücksichtigung der Science Fiction

Die Analyse fiktionaler Erzählungen im Hinblick auf ihre geschlechtlichen Codierungen, nicht nur in Form ihrer Figurengestaltung, sondern z.B. auch in Handlungsmustern oder Raum- und Zeitdarstellungen, ist ein wichtiger literaturwissenschaftlicher Forschungsansatz. Gerade die Science Fiction bietet hierfür ein ergiebiges Forschungsfeld, wie auch die Beiträge in vorliegendem Band zeigen. Aufschlussreich kann es aber auch sein, die Textanalysen in Verbindung mit den Erkenntnissen der empirische..

Designing forest biodiversity experiments : general considerations illustrated by a new large experiment in subtropical China

Funded by German Research Foundation. Grant Number: DFG FOR 891/1 and 2 National Natural Science Foundation of China. Grant Numbers: NSFC 30710103907, 30930005, 31170457 , 31210103910 Swiss National Science Foundation (SNSF) Sino-German Centre for Research Promotion in BeijingPeer reviewedPublisher PD

Efficient Implementation of Parallel Path Planning Algorithms on GPUs

In robot systems several computationally intensivetasks can be found, with path planning being one of them.Especially in dynamically changing environments, it is difficult tomeet real-time constraints with a serial processing approach. Forthose systems using standard computers, a promising option is toemploy a GPGPU as a coprocessor in order to offload those taskswhich can be efficiently parallelized. We implemented selectedparallel path planning algorithms on NVIDIA's CUDA platformand were able to accelerate all of these algorithms efficientlycompared to a multi-core implementation. We present the resultsand more detailed information about the implementation of thesealgorithms

The role of cumulative physical work load in symptomatic knee osteoarthritis – a case-control study in Germany

<p>Abstract</p> <p>Objectives</p> <p>To examine the dose-response relationship between cumulative exposure to kneeling and squatting as well as to lifting and carrying of loads and symptomatic knee osteoarthritis (OA) in a population-based case-control study.</p> <p>Methods</p> <p>In five orthopedic clinics and five practices we recruited 295 male patients aged 25 to 70 with radiographically confirmed knee osteoarthritis associated with chronic complaints. A total of 327 male control subjects were recruited. Data were gathered in a structured personal interview. To calculate cumulative exposure, the self-reported duration of kneeling and squatting as well as the duration of lifting and carrying of loads were summed up over the entire working life.</p> <p>Results</p> <p>The results of our study support a dose-response relationship between kneeling/squatting and symptomatic knee osteoarthritis. For a cumulative exposure to kneeling and squatting > 10.800 hours, the risk of having radiographically confirmed knee osteoarthritis as measured by the odds ratio (adjusted for age, region, weight, jogging/athletics, and lifting or carrying of loads) is 2.4 (95% CI 1.1–5.0) compared to unexposed subjects. Lifting and carrying of loads is significantly associated with knee osteoarthritis independent of kneeling or similar activities.</p> <p>Conclusion</p> <p>As the knee osteoarthritis risk is strongly elevated in occupations that involve both kneeling/squatting and heavy lifting/carrying, preventive efforts should particularly focus on these "high-risk occupations".</p

Impact of Maternal Perinatal Anxiety on Social-Emotional Development of 2-Year-Olds, A Prospective Study of Norwegian Mothers and Their Offspring

publishedVersio