Individual Video Training - Entwicklung einer nationalen Infrastruktur für Video-unterstütztes Lernen

Video-basiertes Lernen ist besonders effektiv, wo es um Fertigkeiten und Verhalten geht. Videoaufzeichnungen von Gesprächen, Unterrichtssituationen oder der Durchführung praktischer Tätigkeiten wie dem Nähen einer Wunde erlauben es den Ausführenden, ihren Peers und ihren Tutoren, die Qualität der Leistung zu beurteilen und Anregungen zur Verbesserung zu formulieren. Wissend um den grossen didaktischen Wert von Videoaufzeichnungen haben sich vier Pädagogische Hochschulen (Zürich, Freiburg, Thurgau, Luzern) und zwei Medizinische Fakultäten (Bern, Lausanne) zusammen getan, um eine nationale Infrastruktur für Video-unterstütztes Lernen anzustossen. Ziel was es, ein System zu entwickeln, das einfach zu bedienen ist, bei dem viele Arbeitsschritte automatisiert sind und das die Videos im Internet bereit stellt. Zusammen mit SWITCH, der nationalen IT-Support-Organisation der Schweizer Hochschulen, wurde basierend auf den vorbestehenden Technologien AAI und SWITCHcast das Programm iVT (Individual Video Training) entwickelt. Die Integration des nationalen Single Logon System AAI (Authentification and Authorization Infrastructure) erlaubt es, die Videos mit dem jeweiligen User eindeutig zu verknüpfen, so dass die Videos nur für diesen User im Internet zugänglich sind. Mit dem Podcast-System SWITCHcast können Videos automatisch ins Internet hochgeladen und bereit gestellt werden. Es wurden je ein Plugin für die Learning Management Systeme ILIAS (PH Zürich, Uni Bern) und Moodle (Uni Lausanne) entwickelt. Dank dieser Plugins werden die Videos in den jeweiligen LMS verfügbar gemacht. Der Einsatz von iVT ist beim Kommunikationstraining unserer Medizinstudierenden in Bern inzwischen Standard. Das Login gilt gleichzeitig als Beleg für das Testat. Studierende, die keine Videoaufzeichnung wünschen, können diese nach dem Login stoppen. Bis anhin ist das Betrachten der Videos freiwillig. Szenarios mit Peer Feedback sind geplant. Eine entsprechende Erweiterung des Systems um gegenseitige Annotationsmöglichkeiten besteht bereits und wird fortlaufend weiterentwickelt.

Enabling knowledge creation through outsiders: towards a push model of open innovation

Open innovation is increasingly being adopted in business and describes a situation in which firms exchange ideas and knowledge with external participants, such as customers, suppliers, partner firms, and universities. This article extends the concept of open innovation with a push model of open innovation: knowledge is voluntarily created outside a firm by individuals and organisations who proceed to push knowledge into a firm’s open innovation project. For empirical analysis, we examine source code and newsgroup data on the Eclipse Development Platform. We find that outsiders invest as much in the firm’s project as the founding firm itself. Based on the insights from Eclipse, we develop four propositions: ‘preemptive generosity’ of a firm, ‘continuous commitment’, ‘adaptive governance structure’, and ‘low entry barrier’ are contexts that enable the push model of open innovation.

Automatic quality control in clinical (1) H MRSI of brain cancer.

MRSI grids frequently show spectra with poor quality, mainly because of the high sensitivity of MRS to field inhomogeneities. These poor quality spectra are prone to quantification and/or interpretation errors that can have a significant impact on the clinical use of spectroscopic data. Therefore, quality control of the spectra should always precede their clinical use. When performed manually, quality assessment of MRSI spectra is not only a tedious and time-consuming task, but is also affected by human subjectivity. Consequently, automatic, fast and reliable methods for spectral quality assessment are of utmost interest. In this article, we present a new random forest-based method for automatic quality assessment of (1) H MRSI brain spectra, which uses a new set of MRS signal features. The random forest classifier was trained on spectra from 40 MRSI grids that were classified as acceptable or non-acceptable by two expert spectroscopists. To account for the effects of intra-rater reliability, each spectrum was rated for quality three times by each rater. The automatic method classified these spectra with an area under the curve (AUC) of 0.976. Furthermore, in the subset of spectra containing only the cases that were classified every time in the same way by the spectroscopists, an AUC of 0.998 was obtained. Feature importance for the classification was also evaluated. Frequency domain skewness and kurtosis, as well as time domain signal-to-noise ratios (SNRs) in the ranges 50-75 ms and 75-100 ms, were the most important features. Given that the method is able to assess a whole MRSI grid faster than a spectroscopist (approximately 3 s versus approximately 3 min), and without loss of accuracy (agreement between classifier trained with just one session and any of the other labelling sessions, 89.88%; agreement between any two labelling sessions, 89.03%), the authors suggest its implementation in the clinical routine. The method presented in this article was implemented in jMRUI's SpectrIm plugin. Copyright © 2016 John Wiley & Sons, Ltd.

Who cares about my feature request?

Previous studies on issue tracking systems for open source software (OSS) focused mainly on requests for bug fixes. However, requests to add a new feature or an improvement to an OSS project are often also made in an issue tracking system. These inquiries are particularly important because they determine the further development of the software. This study examines if there is any difference between requests of the IBM developer community and other sources in terms of the likelihood of successful implementation. Our study consists of a case study of the issue tracking system BugZilla in the Eclipse integrated development environment (IDE). Our hypothesis, which was that feature requests from outsiders have less chances of being implemented, than feature requests from IBM developers, was confirmed.

Na 1 Nachlass Max Horkheimer, 493 - Korrespondenzen mit Mitarbeitern (u.a. Gerhard Brand, Ludwig von Friedeburg und Jürgen Habermas) aus dem Institut für Sozialforschung (p. V 193, 1 - 212)

Briefe zwischen Mitarbeitern des Instituts für Sozialforschung und Max Horkheimer, 1964-1973; 13 Briefe und Beilagen zwischen dem Verwaltungsleiter IfS Siegfried Geissler und Max Horkheimer, 1968-1973; 9 Briefe zwischen Klaus Körber (Institut für Sozialforschung) und Max Horkheimer, 1971-1973; 2 Briefe zwischen dem Professor Rudolf Gunzert und Max Horkheimer, 1972; 2 Briefe zwischen Dr. Joachim Bergmann (Institut für Sozialforschung) und Max Horkheimer, 1971; 2 Briefe zwischen dem Professor Gerhard Brandt und Max Horkheimer, 1971; 6 Briefe zwischen Herbert Ludwig (Institut für Sozialforschung) und Max Horkheimer, 1966-1967; 3 Briefe von Max Horkheimer an Professor Franz Böhm, 1966; Briefe zwischen den Mitarbeitern des Instituts für Sozialforschung und Max Horkheimer, 1955-1959; 4 Briefe von Jürgen Habermas an Max Horkheimer, Frankfurt, 1957-1959; 3 Briefe zwischen Christoph Oehler und Max Horkheimer, 1959; 13 Briefe zwischen Ludwig von Friedeburg und Max Horkheimer, 1955-1959; 1 Brief von Werner Wilkening an Max Horkheimer, 1958; 1 Brief von Gerhard Brandt an Max Horkheimer, 1958; 1 Brief von Max Horkheimer an den Dekan Helmut Viebrock, 1958; 2 Briefe von Egon Becker mit Helge Pross und Ludwig Friedeburg an Max Horkheimer, Frankfurt, 1958-1959; 2 Briefe von Helge Pross mit Egon Becker und Ludwig Friedeburg an Max Horkheimer, Frankfurt, 1958-1959; 1 Brief von Dieter Arenz an Max Horkheimer, Frankfurt, 1956; Briefe vom und an das Institut für Sozialforschung (Advisory Board of the Institute of Social Research), 1940-1947; Briefe und Briefentwürfe an und von Mitgliedern des Advisory Board betreffend die Zusendung von Max Horkheimer "Eclipse of Reason" und Karl August Wittvogel/Olga Lang, "Chinese Family and Society"; vom Institut für Sozialforschung, 1946-1947; 1 Brief von Edwin Borchard vom Institut für Sozialforschung, 1947; 1 Brief von Friedrich Pollock an Alfred E. Cohn, Los Angeles, 1947; 1 Brief von Friedrich Pollock an Stephan Duggan, Los Angeles, 1947; 2 Briefe zwischen Lloyd K. Garrison und Friedrich. Pollock, 1947; 1 Brief von Friedrich Pollock an Calvin B. Hoover, Los Angeles, 1947; 1 Brief von Friedrich Pollock an Philip C. Jessup, Los Angeles, 1947; 1 Brief von Friedrich Pollock an Wesley C. Mitchell, Los Angeles, 1947; 1 Brief von Friedrich Pollock an William A. Neilson, Los Angeles, 1947; 1 Brief von Friedrich Pollock an Frederick M. Padelford, Los Angeles, 1947; 1 Brief von Friedrich Pollock an Thorsten Sellin, Los Angeles, 1947; 3 Briefe zwischen John Whyte und Friedrich Pollock, 1947; 2 Briefe zwischen Louis Wirth und Friedrich Pollock, 1947; 1 Brief von Friedrich Pollock an Howard Woolston, Los Angeles, 1947; 1 Brief von George H. Sabine an das Institut für Sozialforschung, Ithaca, New York, 1946; Briefe und Briefentwürfe an und von Mitgliedern des Advisory Board betreffend den Druck eines neuen Briefkopfs des Instituts, 1940; 1 Brief von Leo Löwenthal, Pacific Palisades an Margot von Mendelssohn, 1942; 1 Brief von Leo Löwenthal an Margot von Mendelssohn, Pacific Palisades, 1942; 1 Brief von Max Horkheimer an K. Pilser, 1942; 2 Briefe zwischen Charles A. Beard und Max Horkheimer, 1940; 2 Briefe zwischen Edwin M. Borchard und Max Horkheimer, 1940; 3 Briefe zwischen Henry Sloane Coffin und Max Horkheimer, 1940; 2 Briefe zwischen Morris R. Cohen und Max Horkheimer, 1940; 2 Briefe zwischen Alfred E. Cohn und Max Horkheimer, 1940; 2 Briefe zwischen Stephen Duggan und Max Horkheimer, 1940; 2 Briefe zwischen dem Soziologen Henry Pratt Fairchild und Max Horkheimer, 1940; 2 Briefe zwischen Sidney B. Fay und Max Horkheimer, 1940; 2 Briefe zwischen Lloyd K. Garrison und Max Horkheimer, 1940; 1 Brief von Max Horkheimer an Calvin B. Hoover, 1940; 2 Briefe zwischen Robert M. Hutchins und Max Horkheimer, 1940; 2 Briefe zwischen Philip C. Jessup und Max Horkheimer, 1940; 2 Briefe zwischen Lewis L. Lorwin und Max Horkheimer, 1940; 2 Briefe zwischen Robert S. Lynd und Max Horkheimer, 1940; 2 Briefe zwischen Robert M. MacIver und Max Horkheimer, 1940; 2 Briefe von Max Horkheimer an Charles H. McIlwain, 1940; 2 Briefe zwischen Charles E. Merriam und Max Horkheimer, 1940; 2 Briefe zwischen Wesley C. Mitchell und Max Horkheimer, 1940; 2 Briefe zwischen William A. Nielson und Max Horkheimer, 1940; 5 Briefe zwischen Howard W. Odum und Max Horkheimer, 1940; 3 Briefe zwischen Frederick M. Padelford und Max Horkheimer, 1940; 3 Briefe von Max Horkheimer an Max Radin, 1940; 2 Briefe zwischen George H. Sabine und Max Horkheimer, 1940; 2 Briefe zwischen Thorsten Sellin und Max Horkheimer, 1940; 2 Briefe zwischen James T. Shotwell und Max Horkheimer, 1940; 1 Brief von dem Soziologen Louis Wirth an Franz Neumann, Chicago, 1940; 1 Brief von Louis Wirth an Franz L. Neumann, Chicago, 1940; 3 Briefe zwischen Howard Woolston und Max Horkheimer, 1940;

EVALUATION OF THE EFFECTIVENESS OF ANISOTROPIC ANALYTICAL ALGORITHM IN FLATTENED AND FLATTENING-FILTER-FREE BEAMS FOR HIGH ENERGY LUNG DOSE DELIVERY USING THE RADIOLOGICAL PHYSICS CENTER LUNG PHANTOM

The effectiveness of the Anisotropic Analytical Algorithm (AAA) implemented in the Eclipse treatment planning system (TPS) was evaluated using theRadiologicalPhysicsCenteranthropomorphic lung phantom using both flattened and flattening-filter-free high energy beams. Radiation treatment plans were developed following the Radiation Therapy Oncology Group and theRadiologicalPhysicsCenterguidelines for lung treatment using Stereotactic Radiation Body Therapy. The tumor was covered such that at least 95% of Planning Target Volume (PTV) received 100% of the prescribed dose while ensuring that normal tissue constraints were followed as well. Calculated doses were exported from the Eclipse TPS and compared with the experimental data as measured using thermoluminescence detectors (TLD) and radiochromic films that were placed inside the phantom. The results demonstrate that the AAA superposition-convolution algorithm is able to calculate SBRT treatment plans with all clinically used photon beams in the range from 6 MV to 18 MV. The measured dose distribution showed a good agreement with the calculated distribution using clinically acceptable criteria of ±5% dose or 3mm distance to agreement. These results show that in a heterogeneous environment a 3D pencil beam superposition-convolution algorithms with Monte Carlo pre-calculated scatter kernels, such as AAA, are able to reliably calculate dose, accounting for increased lateral scattering due to the loss of electronic equilibrium in low density medium. The data for high energy plans (15 MV and 18 MV) showed very good tumor coverage in contrast to findings by other investigators for less sophisticated dose calculation algorithms, which demonstrated less than expected tumor doses and generally worse tumor coverage for high energy plans compared to 6MV plans. This demonstrates that the modern superposition-convolution AAA algorithm is a significant improvement over previous algorithms and is able to calculate doses accurately for SBRT treatment plans in the highly heterogeneous environment of the thorax for both lower (≤12 MV) and higher (greater than 12 MV) beam energies.

Volumetric Modulated Arc Therapy Evaluation with the Radiological Physics Center Head and Neck Phantom

Validation of treatment plan quality and dose calculation accuracy is essential for new radiotherapy techniques, including volumetric modulated arc therapy (VMAT). VMAT delivers intensity modulated radiotherapy treatments while simultaneously rotating the gantry, adding an additional level of complexity to both the dose calculation and delivery of VMAT treatments compared to static gantry IMRT. The purpose of this project was to compare two VMAT systems, Elekta VMAT and Varian RapidArc, to the current standard of care, IMRT, in terms of both treatment plan quality and dosimetric delivery accuracy using the Radiological Physics Center (RPC) head and neck (H&N) phantom. Clinically relevant treatment plans were created for the phantom using typical prescription and dose constraints for Elekta VMAT (planned with Pinnacle3 Smart Arc) and RapidArc and IMRT (both planned with Eclipse). The treatment plans were evaluated to determine if they were clinically comparable using several dosimetric criteria, including ability to meet dose objectives, hot spots, conformity index, and homogeneity index. The planned treatments were delivered to the phantom and absolute doses and relative dose distributions were measured with thermoluminescent dosimeters (TLDs) and radiochromic film, respectively. The measured and calculated doses of each treatment were compared to determine if they were clinically acceptable based upon RPC criteria of ±7% dose difference and 4 mm distance-to-agreement. Gamma analysis was used to assess dosimetric accuracy, as well. All treatment plans were able to meet the dosimetric objectives set by the RPC and had similar hot spots in the normal tissue. The Elekta VMAT plan was more homogenous but less conformal than the RapidArc and IMRT plans. When comparing the measured and calculated doses, all plans met the RPC ±7%/4 mm criteria. The percent of points passing the gamma analysis for each treatment delivery was acceptable. Treatment plan quality of the Elekta VMAT, RapidArc and IMRT treatments were comparable for consistent dose prescriptions and constraints. Additionally, the dosimetric accuracy of the Elekta VMAT and RapidArc treatments was verified to be within acceptable tolerances.

"Un español sin patria ninguna" : el idioma de los libros en tiempos de auge editorial

El auge editorial argentino iniciado en 1938 suele atribuirse al coyuntural eclipse de la industria española con motivo de la guerra y la primera posguerra civil, y a la presencia de empresarios peninsulares en las editoriales que dominarían el mercado: Losada, Emecé y Sudamericana. No obstante, también los intelectuales colaboraron en este proceso, no sólo como directores de colección, traductores o correctores, sino específicamente apuntalándolo con su producción ensayística. El objetivo de este trabajo es analizar una serie de ensayos, producidos entre fines de la década del 1920 y mediados de 1940, por intelectuales argentinos y españoles emigrados en Buenos Aires, en los que se articulan los tópicos de la unidad lingüística hispanoamericana y el desarrollo librero. Focalizaremos aquí aquellos aspectos en los que estos discursos sobre el llamado "problema de la lengua en América" revelan los fundamentos económicos de las creencias lingüístico-culturales que procuran instalar.

"Un español sin patria ninguna" : el idioma de los libros en tiempos de auge editorial

El auge editorial argentino iniciado en 1938 suele atribuirse al coyuntural eclipse de la industria española con motivo de la guerra y la primera posguerra civil, y a la presencia de empresarios peninsulares en las editoriales que dominarían el mercado: Losada, Emecé y Sudamericana. No obstante, también los intelectuales colaboraron en este proceso, no sólo como directores de colección, traductores o correctores, sino específicamente apuntalándolo con su producción ensayística. El objetivo de este trabajo es analizar una serie de ensayos, producidos entre fines de la década del 1920 y mediados de 1940, por intelectuales argentinos y españoles emigrados en Buenos Aires, en los que se articulan los tópicos de la unidad lingüística hispanoamericana y el desarrollo librero. Focalizaremos aquí aquellos aspectos en los que estos discursos sobre el llamado "problema de la lengua en América" revelan los fundamentos económicos de las creencias lingüístico-culturales que procuran instalar.

Coloquio Internacional Mito y Performance : De Grecia a la Modernidad (5 : 2009 : La Plata). Mito y performance

Tabla de contenidos: Apolo, el ejecutante / Richard P. Martin. Está descripto un eclipse en La Odisea? / Constantino Baikouzis, Marcelo O. Magnasco. Literatura y astronomía / Héctor Vucetich. A propósito del mito en Platón : Falsedad y verdad / María Isabel Santa Cruz. Os gêneros líricos e a filosofia na República platônica / Maria das Graças de Moraes Augusto. Eurípides y el espectáculo de violencia / María de Fátima Silva. El mito de Orfeo y el problema del lenguaje en Eurípides / Juan Tobías Napoli. Resonancias poéticas de Eco / Juan Lorenzo Lorenzo. Súplica, lamento y encomio : La performance del mito en Homero / Graciela Cristina Zecchin de Fasano. Art and politics n Euripides'Ion : The gigantomachy as spectacle and model of action / Lucia Athanassaki. Poesia e espetáculo no Filoctetes de Sófocles / Fernando Brandao dos Santos. La presencia del mito en la novela / Lourdes Rojas Alvarez. El espacio femenino en las Traquinias de Sófocles / Filomena Yoshie Hirata. Mito y performance en la tragedia de Séneca / Lía Galán. Mito y performance sobre la escena ática : Praxitea, Erecteo, sus hijas y la etiología de la autoctonía / Claude Calame. O heói atleta : Mito e religiao nos jogos helênicos / Fábio de Souza Lessa. Las Agrionias y el mito de las Miníades. Razones de un ritual / Alberto Bernabé. Performing and re-performing Helen : Stesichorus' Palinode / Ewen Bowie.

"Un español sin patria ninguna" : el idioma de los libros en tiempos de auge editorial

El auge editorial argentino iniciado en 1938 suele atribuirse al coyuntural eclipse de la industria española con motivo de la guerra y la primera posguerra civil, y a la presencia de empresarios peninsulares en las editoriales que dominarían el mercado: Losada, Emecé y Sudamericana. No obstante, también los intelectuales colaboraron en este proceso, no sólo como directores de colección, traductores o correctores, sino específicamente apuntalándolo con su producción ensayística. El objetivo de este trabajo es analizar una serie de ensayos, producidos entre fines de la década del 1920 y mediados de 1940, por intelectuales argentinos y españoles emigrados en Buenos Aires, en los que se articulan los tópicos de la unidad lingüística hispanoamericana y el desarrollo librero. Focalizaremos aquí aquellos aspectos en los que estos discursos sobre el llamado "problema de la lengua en América" revelan los fundamentos económicos de las creencias lingüístico-culturales que procuran instalar.

Characteristics, home ranges and population estimates of narwhals (Monodon monoceros) around Baffin Island

Twenty-one narwhals tagged in 2003 and 2004 in Admiralty Inlet showed a different summer distributional pattern than previous narwhal-tracking studies from Somerset Island, Eclipse Sound and Melville Bay. The migration of the narwhals tracked from Admiralty Inlet moved out through Lancaster Sound 15 days earlier (P <0.0001) than the narwhals summering around Eclipse Sound, whereas the Admiralty Inlet narwhals reached the mouths of Eclipse Sound 18 days later (P <0.0001) than the Eclipse Sound summering population. The winter range of the Admiralty Inlet narwhals overlapped with the winter range of narwhals from Melville Bay and Eclipse Sound in central southern Baffin Bay and Northern Davis Strait, but not with the winter range of narwhals from Somerset Island that wintered further north. Distribution size of range, and population size did not appear to be related. An example of considerable year to year variation between area of summer and winter distribution in the 2 years was believed to be related to the sample size and number of pods of whales tagged, rather than to differences in sex or age classes.

Narwhal (Monodon monoceros) sightings and population estimates for the Canadian High Arctic 2002-2004

Aerial surveys of narwhals (Monodon monoceros) were conducted in the Canadian High Arctic during the month of August from 2002 to 2004. The surveys covered the waters of Barrow Strait, Prince Regent Inlet, the Gulf of Boothia, Admiralty Inlet, Eclipse Sound, and the eastern coast of Baffin Island, using systematic sampling methods. Fiords were flown along a single transect down the middle. Near-surface population estimates increased by 1.9%-8.7% when corrected for perception bias. The estimates were further increased by a factor of approximately 3, to account for individuals not seen because they were diving when the survey plane flew over (availability bias). These corrections resulted in estimates of 27 656 (SE = 14 939) for the Prince Regent and Gulf of Boothia area, 20 225 (SE = 7285) for the Eclipse Sound area, and 10 073 (SE = 3123) for the East Baffin Island fiord area. The estimate for the Admiralty Inlet area was 5362 (SE = 2681) but is thought to be biased. Surveys could not be done in other known areas of occupation, such as the waters of the Cumberland Peninsula of East Baffin, and channels farther west of the areas surveyed (Peel Sound, Viscount Melville Sound, Smith Sound and Jones Sound, and other channels of the Canadian Arctic archipelago). Despite these probable biases and the incomplete coverage, results of these surveys show that the summering range of narwhals in the Canadian High Arctic is vast. If narwhals are philopatric to their summering areas, as they appear to be, the total population of that range could number more than 60 000 animals. The largest numbers are in the western portion of their summer range, around Somerset Island, and also in the Eclipse Sound area. However, these survey estimates have large variances due to narwhal aggregation in some parts of the surveyed areas.

Basic and other measurements of radiation at station Ny-Ålesund (2015-03)

On 20 March 2015, a total solar eclipse occurred over Ny-Ålesund (78.9° N, 11.9° E), Svalbard, in the high Arctic. It was the first time that the surface radiation components during the totality of a solar eclipse were measured by a Baseline Surface Radiation Network (BSRN) station. With the Ny-Ålesund long-term radiation data set as background (available at doi:10.1594/PANGAEA.150000), we present here the peculiarities of the radiation components and basic meteorology observed during the eclipse event. The supplementary data set contains the basic BSRN radiation and surface meteorological data in 1 min resolution for March 2015, and is available at doi:10.1594/PANGAEA.854326. The eclipse radiation data will be a useful auxiliary data set for further studies on micrometeorological surface-atmosphere exchange processes in the Svalbard environment, and may serve as a test case for radiative transfer studies.

Scheduling Ontology Engineering Projects Using gOntt

In order to manage properly ontology development projects in complex settings and to apply correctly the NeOn Methodology, it is crucial to have knowledge of the entire ontology development life cycle before starting the development projects. The ontology project plan and scheduling helps the ontology development team to have this knowledge and to monitor the project execution. To facilitate the planning and scheduling of ontology development projects, the NeOn Toolkit plugin called gOntt has been developed. gOntt is a tool that supports the scheduling of ontology network development projects and helps to execute them. In addition, prescriptive methodological guidelines for scheduling ontology development projects using gOntt are provided.