Bernhard Knapp

Implementation and Analysis of Deep Learning-Based Methods for Detecting Defective Ultrasound Transducers

Lorenz Flich, Christian Kollmann, Bernhard Knapp

Ultrasound image quality and transducer integrity directly affect diagnostic accuracy. Defective transducer elements may introduce artefacts, reduce resolution, and lead to misleading findings. This paper reports a deep learning approach for detecting defective ultrasound transducers from air-test images. The method uses a …

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Implementation and Analysis of Deep Learning-Based Methods for Detecting Defective Ultrasound Transducers

Lorenz Flich, Christian Kollmann, Bernhard Knapp

Ultrasound image quality and transducer integrity directly affect diagnostic accuracy. Defective transducer elements may introduce artefacts, reduce resolution, and lead to misleading findings. This paper reports a deep learning approach for detecting defective ultrasound transducers from air-test images. The method uses a …

at (code pays fourni par la source)

Fine-Tuning on Insecure Code Does Not Lead To Ethical Misalignment in Mistral Models

Marlis Tiefengraber, Bernhard Knapp

Fine-tuning is widely used to adapt large language models (LLMs) to narrow tasks, but recent work suggests that fine-tuning on insecure code can elicit broader forms of misalignment outside the coding domain. This paper reproduces and extends this claim for Mistral-family instruction …

at (code pays fourni par la source)

Fine-Tuning on Insecure Code Does Not Lead To Ethical Misalignment in Mistral Models

Marlis Tiefengraber, Bernhard Knapp

Fine-tuning is widely used to adapt large language models (LLMs) to narrow tasks, but recent work suggests that fine-tuning on insecure code can elicit broader forms of misalignment outside the coding domain. This paper reproduces and extends this claim for Mistral-family instruction …

at (code pays fourni par la source)

Student Feedback Questionnaires Are Highly Redundant: Evidence from 6,451 Courses

Bernhard Knapp

at (code pays fourni par la source)

Student Feedback Questionnaires Are Highly Redundant: Evidence from 6,451 Courses

Bernhard Knapp

Student feedback questionnaires for courses are an essential part of quality control at universities. Feedback can be useful to improve courses and to monitor course development over time. However, the number of questions posed to students varies between universities; some use short …

Student Feedback Questionnaires Are Highly Redundant: Evidence from 6,451 Courses

Bernhard Knapp

Student feedback questionnaires for courses are an essential part of quality control at universities. Feedback can be useful to improve courses and to monitor course development over time. However, the number of questions posed to students varies between universities; some use short …

Numerically Efficient Non-Adiabatic Real Fluid Flamelet-Based Combustion Modeling Approach for Liquid Rocket Engine Thrust Chambers

Marvin Pommerening, Daniel Eiringhaus, Jan Martin, Bernhard Knapp et autres

In the present work, a consistent thermophysical modeling framework for the representation of real fluid effects via a single-phase dense gas approach is discussed and its prediction quality at transcritical conditions typical for liquid-propellant rocket engine injection is investigated. It is linked …

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Experimental Study and Visualization of the Combustion Dynamics and Behavior of a Single Swirl Coaxial Injector Element in a High Pressure LOX/CH4 Rocket Combustor

Alexander Bee, Michael Börner, Wolfgang Armbruster, Bernhard Knapp et autres

To study the characteristics of liquid-centered swirl coaxial injectors representative for combustion chambers of large, regeneratively cooled liquid oxygen/methane main stage engines, a single element was designed, manufactured and subsequently hot-fired. The tests were performed in a single-element research combustion chamber with …

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Experimental Investigation of a Small-Scale Oxygen-Hydrogen Rotating Detonation Rocket Combustor

Wolfgang Armbruster, Michael Börner, Alexander Bee, Jan Martin et autres

This study presents the design methodology and results from initial testing of an experimental hydrogen-oxygen rotating detonation combustor (RDC). A small-scale heat sink chamber was designed for studying rotating detonative combustion for rocket propulsion applications. Initial testing was performed to verify the …

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ChatGPT as a medical doctor? A diagnostic accuracy study on common and rare diseases

Lars Mehnen, Stefanie Gruarin, Mina Vasileva, Bernhard Knapp

Abstract Seeking medical advice online has become popular in the recent past. Therefore a growing number of people might ask the recently hyped ChatGPT for medical information regarding their conditions, symptoms and differential diagnosis. In this paper we tested ChatGPT for its …

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Supplementary Figure 2 from Vemurafenib Resistance Signature by Proteome Analysis Offers New Strategies and Rational Therapeutic Concepts

Verena Paulitschke, Walter Berger, Philipp Paulitschke, Elisabeth Hofstätter et autres

Proteome characterization of Vemurafenib-sensitive and-resistant melanoma cells V0 and V1 of nuclear fraction. Left: Hierarchical clustering of Z-scored expression values for significantly changed proteins, revealing differences between V0 and V1. Left: Profiles of the five main clusters. Two clusters with the highest …