Wer sich mit medizinrechtlichen Fragestellungen befasst, wird unweigerlich früher oder später auf das umfassende Wirken von Dr. Rudolf Ratzel stoßen. Denn schon zu Zeiten, als es das heute so dynamische Rechtsgebiet „Medizinrecht“ nicht einmal terminologisch gab, war er der Sache nach längst in diesem Bereich anwaltlich sowie als Autor von Fachveröffentlichungen tätig. Die Festschrift versammelt Beiträge in der ganzen Bandbreite des Medizinrechts. Sie zeugt in etwa so von „Medizinrecht von A-Z“ wie Dr. Ratzel und sein berufliches Schaffen selbst. 

As universities around the world welcome increasing numbers of international students, there is a growing demand for scalable, objective tools that can support both language learning and applicant selection based on spoken language proficiency. In particular, pronunciation and comprehension remain persistent challenges for non-native speakers and are key factors for communication in academic environments. Traditional methods of assessing these skills are labor-intensive or often rely on surface-level metrics such as transcription accuracy, which do not fully capture a learner’s communicative competence. This work introduces TalkPro, a multi-modal system for pronunciation and comprehension assessment as well as language learning, designed to address this need. The system provides continuous, personalized feedback on learners’ spoken language, with a specific focus on phoneme-level accuracy as well as articulatory patterns. Instead of relying solely on conventional speech recognition outputs, which are often able to compensate even major pronunciation errors, TalkPro generates detailed acoustic analyses that pinpoint learner-specific difficulties. These include not only phoneme-level errors but also recurring articulatory tendencies, such as misplacement of the tongue, incorrect voicing, or inappropriate manner of articulation. The system also includes a text-to-speech (TTS) engine to generate spoken content adapted to vocabulary gaps, which is then followed by targeted comprehension questions. TTS can also be used to test listening comprehension either word by word in a dictation style or semantically using a large language model (LLM) as a judge. Overall, these components form an integral approach to pronunciation and comprehension training in a blended learning environment and can also be used for automated assessment. Preliminary experiments with incoming students from India to Germany indicate that phoneme-level ASR effectively identifies pronunciation errors, whereas grapheme-level ASR tends to overlook them. Future research will involve a comprehensive evaluation of automated results against human judgment, alongside the expansion of TalkPro's training capabilities with LLM-based reading comprehension modules that prioritize conceptual understanding over traditional verbatim recall.

Background

Traumatic brain injury (TBI) is one of the most important pediatric conditions worldwide. In Germany, hospitalization rates for mild TBI drastically exceed hospitalization rates from similar healthcare systems.

Methods

The SaVeBRAIN.Kids trial will implement and test a novel care pathway (nCP) for evidence-based standardized risk assessment, structured observation in the emergency department (ED) for several hours, and technology-supported home monitoring with the aim to reduce hospitalizations. This non-inferiority multicenter study will be carried out using a cluster-randomized stepped-wedge design, with all centers starting in the control phase and sequentially transitioning to the intervention. Eligible participants (age ≥ 3 months and < 18 years) must present within 48 h of head injury, have minimal symptoms (Glasgow coma scale ≥ 14), and no risk factors for intracranial complications. The co-primary outcomes are the relative risk of hospitalization and the proportion of unplanned re-visits within 72 h of presentation to the ED for ambulatory cases. Secondary outcomes include clinical safety measures, cost-effectiveness, and process evaluation. Based on power calculations (α = 0.05, power = 0.9), 1390 patients will be recruited over 12 months.

Discussion

 The SaVeBRAIN.Kids trial addresses a relevant healthcare challenge by testing a new approach to pediatric mild TBI management in Germany. It aligns with current evidence while accounting for the country’s specific healthcare context. If successful, the intervention could substantially reduce unnecessary hospitalizations and free inpatient capacities while preserving patient safety.

Trial registration

German Clinical Trials Registry (DRKS00035623). Registered on January 21, 2025.

Hydrogen and Syngas - Platform for a sustainable future, 28. - 29.Oktober 2025, Essen, Germany 

The ARM TrustZone Trusted Execution Environment (TEE) allows software to run in an isolated environment, separated from the untrusted OS. The isolation is based on the Secure Monitor (SM), software running at the most privileged hardware level, with unrestricted access to all system resources, including those of the TEE. Critically, recent research revealed widespread vulnerabilities in SMs that break the TEE isolation and, thus, undermine the very purpose of the TEE. To this end, we present SH3ARS, a fundamental restructuration of the SM firmware that reduces the privileges of the SM and restores ARM TrustZone isolation. SH3ARS modifies the SM to irrevocably relinquish access to memory outside its own address space through a page table latching mechanism. Furthermore, we introduce guards, carefully crafted, gadget-free code sequences, that supervise the context switch to and from the TEE, preventing code-reuse attacks against the TEE – a technique we refer to as SMC-oriented programming. Relying on software changes, SH3ARS ensures TEE isolation guarantees, even if the SM is compromised. We apply SH3ARS to the reference implementation of the SM on ARMv8.0-A, as deployed on millions of devices. We implement a proof of concept on real hardware, and our evaluation shows that the overhead is lower than 6% for most workloads.

Recently, a call was made for the hypertext community to “return to its roots” by re-exploring our interdisciplinary nature, renewing the areas of common interest with the diverse set of researchers that comprise this community. In this paper, we lay out a set of research questions inspired by several research threads that were active in prior iterations of the hypertext community, but have recently slipped from our focus. The developments of the intervening years have in many cases added nuance and depth to these open questions, potentially making them of renewed interest to the present community. We present these questions through the lens of a maximalist vision that places structure front and center of our model of the world, relegating data to second-class status. We follow the implications of this vision to recover a set of open questions that once occupied, and may once again occupy, a large portion of the interest of the hypertext community.

Aktau Dialogue: Green Hydrogen 2025, 01.-03. Oktober 2025, Aktau, Kasachstan

Capturing human poses with monocular RGB cameras seems like an uncomplicated compared to extensive motion capturing systems or calibrated multi camera setups. In our application scenario we are capturing the biomechanics of surfers on standing waves in rivers with GoPro cameras. Thereby we identified detection quality issues of the joints on the backside of the surfers’ bodies in certain situations.

In this paper we are evaluating different camera positions and angles with regard to the recognition quality of these critical body parts. We are describing the application scenario and the resulting requirements for human pose estimation and hardware setup.

Our evaluation results are identifying patterns of quality issues depending on surfers’ stance, skills and motions on the one hand and camera positions and angles on the other hand. We are concluding our paper with further approaches to improve detection quality.