127 research outputs found

    The action about nothing as description problem : Samuel Beckett's En attendant Godot and Franz Kafkas Der Prozess

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    In dieser Arbeit wird der Frage nachgegangen, wie sich eine Darstellung des Nichts durch die Darstellung von Etwas vollzieht. Wie Arnold P. Hinchliffe richtig feststellt zerstört das Konzept von Nichts sich selbst, denn es produziert Etwas , dennoch haben wir eine Vorstellung von dem mit Nichts bezeichneten. Diese Arbeit stellt es sich zur Aufgabe die Leerstellen in der Handlung von Samuel Becketts En attendant Godot und Franz Kafkas Der Prozess zu analysieren. Hierfür ist es notwendig verschiedene Motive zu betrachten, die Lücken in ihren Definitionen aufweisen. Es sind diese Leerstellen auf denen gerade die Handlung aufbaut und sie nehmen einen großen Teil dabei ein, die Handlung zum Voranschreiten zu bewegen. Anhand von Becketts En attendant Godot und Kafkas Der Prozess sollen die Darstellungsweisen der nicht vorhandenen Begebenheiten betrachtet und analysiert werden. Das sich äußernde Nicht-sein durch Etwas führt zum Sein der Schriften selbst. Sie thematisieren ihre eigene nicht vorhandene Handlung, eine Leerstelle und handeln eben dadurch von etwas. Sowohl En attendant Godot als auch Der Prozess können infolge dessen als von sich selbst handelnde Schriften gelesen werden, was sich diese Arbeit zum Ziel setzt. Sie sind intratextuell, gehen jedoch auf Grund der Art dieser intratextuellen Darstellung weit über einen bloßen Intratext hinaus. In Becketts En attendant Godot stellt sich das Fehlen einer eigentlichen Handlung sehr deutlich dar. Das Erwartete, das Eintreffen von Godot, bleibt aus. Selbst die Gewissheit der Verabredung und der Existenz Godots verschwindet. Es bleibt nichts außer der Hoffnung der Charaktere, Vladimir und Estragon, die keine herkömmlichen Rollen haben, also eigentlich Nicht-Rollen sind. Vor anderem Hintergrund (dem der Gesetze) stellt sich das Nichts bei Kafkas Prozess dar. Josef K. wird eines Morgens verhaftet, doch die Verhaftung ist keine, die ihn an seiner gewöhnlichen Lebensweise hindert. Es ist eine Verhaftung ohne Festnahme, ein hängen bleiben an etwas Unbestimmtem, ein festhalten, ohne vor etwas zu bewahren

    Digital Twins for Ports: Derived from Smart City and Supply Chain Twinning Experience

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    Ports are striving for innovative technological solutions to cope with the ever-increasing growth of transport, while at the same time improving their environmental footprint. An emerging technology that has the potential to substantially increase the efficiency of the multifaceted and interconnected port processes is the digital twin. Although digital twins have been successfully integrated in many industries, there is still a lack of cross-domain understanding of what constitutes a digital twin. Furthermore, the implementation of the digital twin in complex systems such as the port is still in its infancy. This paper attempts to fill this research gap by conducting an extensive cross-domain literature review of what constitutes a digital twin, keeping in mind the extent to which the respective findings can be applied to the port. It turns out that the digital twin of the port is most comparable to complex systems such as smart cities and supply chains, both in terms of its functional relevance as well as in terms of its requirements and characteristics. The conducted literature review, considering the different port processes and port characteristics, results in the identification of three core requirements of a digital port twin, which are described in detail. These include situational awareness, comprehensive data analytics capabilities for intelligent decision making, and the provision of an interface to promote multi-stakeholder governance and collaboration. Finally, specific operational scenarios are proposed on how the port's digital twin can contribute to energy savings by improving the use of port resources, facilities and operations.Comment: This work has been submitted to the IEEE for possible publication. Copyright may be transferred without notice, after which this version may no longer be accessibl

    Calibration Strategies Designed For Long Term Sediment Transport Modelling

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    The presented work deals with the calibration of a 2D numerical model for the simulation of long term bed load transport. A settled basin along an alpine stream was used as a case study. The focus is to parameterise the used multi fractional transport model such that a dynamically balanced behavior regarding erosion and deposition is reached. The used 2D hydrodynamic model utilizes a multi-fraction multi-layer approach to simulate morphological changes and bed load transport. The mass balancing is performed between three layers: a top mixing layer, an intermediate subsurface layer and a bottom layer. Using this approach bears computational limitations in calibration. Due to the high computational demands, the type of calibration strategy is not only crucial for the result, but as well for the time required for calibration. Brute force methods such as Monte Carlo type methods may require a too large number of model runs. All here tested calibration strategies used multiple model runs utilising the parameterization and/or results from previous run. One concept was to reset to initial bed elevations after each run, allowing the resorting process to convert to stable conditions. As an alternative or in combination, the roughness was adapted, based on resulting nodal grading curves, from the previous run. Since the adaptations are a spatial process, the whole model domain is subdivided in homogeneous sections regarding hydraulics and morphological behaviour. For a faster optimization, the adaptation of the parameters is made section wise. Additionally, a systematic variation was done, considering results from previous runs and the interaction between sections. The used approach can be considered as similar to evolutionary type calibration approaches, but using analytical links instead of random parameter changes

    Extension And Testing Of A 2D Hydrodynamic Model For Direct Rainfall Runoff Simulation

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    While the simulation of flood risks originating from the overtopping of river banks is well covered within continuously evaluated programs to improve flood protection measures, flash flooding is not. Flash floods are triggered by short, local thunderstorm cells with high precipitation intensities. Small catchments have short response times and flow paths and convective thunder cells may result in potential flooding of endangered settlements. Assessing local flooding and pathways of flood requires a detailed hydraulic simulation of the surface runoff. Hydrological models usually do not incorporate surface runoff at this detailedness but rather empirical equations are applied for runoff detention. In return 2D hydrodynamic models usually do not allow distributed rainfall as input nor are any types of soil/surface interaction implemented as in hydrological models. Considering several cases of local flash flooding during the last years the issue emerged for practical reasons but as well as research topics to closing the model gap between distributed rainfall and distributed runoff formation. Therefore, a 2D hydrodynamic model, depth-averaged flow equations using the finite volume discretization, was extended to accept direct rainfall enabling to simulate the associated runoff formation. The model itself is used as numerical engine, rainfall is introduced via the modification of waterlevels at fixed time intervals. The paper not only deals with the general application of the software, but intends to test the numerical stability and reliability of simulation results. The performed tests are made using different artificial as well as measured rainfall series as input. Key parameters of the simulation such as losses, roughness or time intervals for water level manipulations are tested regarding their impact on the stability

    Buoyant energy - balancing wind power and other renewable in Europe's oceans

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    Buoyant Energy is a new approach to store electrical energy offshore and at a decentralised location, based on the well established technologies of pumped-storage hydro-power. The following work focuses on the basic concept and discusses some of the key features addressed. The unique adaptability and important synergies with other offshore activities are discussed. A basic cost assessment estimates the life cycle costs in order to demonstrate the economic feasibility. Finally, a case study evaluates the effects of integrating deep offshore wind balanced by Buoyant Energy units in a central Mediterranean archipelago ́s electricity generating system.peer-reviewe

    The openCARP CDE: Concept for and implementation of a sustainable collaborativedevelopment environment for research software

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    This work describes the setup of an advanced technical infrastructure for collabora-tive software development in large, distributed projects based on GitLab. We presentits customization and extension, additional features and processes like code review,continuous automated testing, DevOps practices, and sustainable life-cycle manage-ment including long-term preservation and citable publishing of software releasesalong with relevant metadata. The collaborative development environment (CDE) iscurrently used for developing the open cardiac simulation software openCARP and anevaluation showcases its capability and utility for collaboration and coordination ofsizeable heterogeneous teams. As such, it could be a suitable and sustainable infras-tructure solution for a wide range of research software projects

    Confronting Persistent Challenges through Research-Based Programming for Experienced School Leaders

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    This paper’s thesis of human agency derived from the South Carolina Successful School Principalship Project’s (SCSSPP) findings. In these schools, principals had leveraged a variety of schoolwide initiatives to enact the vision that all students would be successful despite their rurality and poverty. These findings were the underlying design for two regional cross-district pilot programs. Known as Leadership 2.0 and Leadership 3.0, the development of agency was constructed through cognitive coaching and based on principals of adult learning. Initial evaluation of participants\u27 first year reactions show consistently high perceptions of all aspects of the principals used for their professional learning

    Learning and Reflection in the Midst of Persistent Challenges on Practicing School Leaders’ Time

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    Among the many scarce resources that principals must conserve and use wisely, time may present one of the more persistent challenges to their leadership practices. A simultaneous and equally challenging practice for school leaders is engaging in systematic reflection that serves to mitigate time constraints and emotional upheavals of the job. Reflection, and resistance to it, emerged as a theme during a yearlong-program that emerged from a school-university partnership, focused on the development of district-level coaches to support experienced principals in becoming more reflective leaders for continuous school improvement. The program uncovered principals’ resistance to the pauses in their practices that reflection requires. These principals and coaches also reported emotional reactions to persisting mandates on school accountability. This paper offers some insights into how reflection may balance the ongoing emotional dynamics and time constraints of schooling, and the degree to which the mentoring program supported principal protégés in this effort

    Sex-Specific Prediction Models for Sleep Apnea From the Hispanic Community Health Study/Study of Latinos

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    OBJECTIVE: We developed and validated the first-ever sleep apnea (SA) risk calculator in a large population-based cohort of Hispanic/Latino subjects. METHODS: Cross-sectional data on adults from the Hispanic Community Health Study/Study of Latinos (2008-2011) were analyzed. Subjective and objective sleep measurements were obtained. Clinically significant SA was defined as an apnea-hypopnea index ≥ 15 events per hour. Using logistic regression, four prediction models were created: three sex-specific models (female-only, male-only, and a sex × covariate interaction model to allow differential predictor effects), and one overall model with sex included as a main effect only. Models underwent 10-fold cross-validation and were assessed by using the C statistic. SA and its predictive variables; a total of 17 variables were considered. RESULTS: A total of 12,158 participants had complete sleep data available; 7,363 (61%) were women. The population-weighted prevalence of SA (apnea-hypopnea index ≥ 15 events per hour) was 6.1% in female subjects and 13.5% in male subjects. Male-only (C statistic, 0.808) and female-only (C statistic, 0.836) prediction models had the same predictor variables (ie, age, BMI, self-reported snoring). The sex-interaction model (C statistic, 0.836) contained sex, age, age × sex, BMI, BMI × sex, and self-reported snoring. The final overall model (C statistic, 0.832) contained age, BMI, snoring, and sex. We developed two websites for our SA risk calculator: one in English (https://www.montefiore.org/sleepapneariskcalc.html) and another in Spanish (http://www.montefiore.org/sleepapneariskcalc-es.html). CONCLUSIONS: We created an internally validated, highly discriminating, well-calibrated, and parsimonious prediction model for SA. Contrary to the study hypothesis, the variables did not have different predictive magnitudes in male and female subjects
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