Offenburg University of Applied Sciences
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Gewissenhafte Projektplanung - eine Frage des Alters?
No full textDie Art und Weise, wie Projekte geplant und gesteuert werden, steht u. a. in einer starken Prägung des Projektteams und dessen Alter. Projektbeteiligte in fortgeschrittenem Alter bringen oft mehr Projekt-, Berufs- und Lebenserfahrung ein. Sie arbeiten gründlich und umsichtig, sind aber weniger risikobereit. Sehr junge Teams hingegen arbeiten oft agiler, nutzen mehr IT-Tools für die Planung und die Kommunikation untereinander. Sie nutzen vielleicht sogar schon Künstliche Intelligenz. Sie können durch Flexibilität und ein punktuell höheres Leistungsvermögen die aus Unerfahrenheit resultierenden Planungsfehler ggf. wieder ausbügeln. Die diesen beiden Altersextremen nachgesagten Charakterprofile können teilweise empirisch nachgewiesen werden, sind teils aber auch klischeebehaftete Behauptungen, die zwar punktuell beobachtet, aber nicht pauschaliert werden sollten. Im fortgeschrittenen Alter gibt es kaum feste Grenzen. Erfahrene „alte Hasen“ können auch im hohen Rentenalter noch eine Bereicherung für jedes Team sein. Bezüglich des Nachwuchses gibt es immer wieder Diskussionen rund um die untere Altersgrenze. Ab welchem Alter ist es sinnvoll, spielerisch lernende Kinder für die Notwendigkeit einer frühzeitigen Projektplanung zu sensibilisieren? Die GPM-Fachgruppe ‚Projektmanagement macht Schule‘ hat zahlreiche Projekte in Berufsschulen und der Gymnasialstufe begleitet und aus den Erfahrungen umfangreiche Lehrmaterialien entwickelt. In Gymnasien und Berufsschulen sind daher häufiger Projekte zu beobachten, die diese Bezeichnung auch verdienen. Eine projekthafte Unterrichtsgestaltung ist nicht nur ein Modetrend, sondern nachweislich abwechslungsreich, motivierend, praxisnah und lernfördernd. Im Real- und insbesondere Grundschulalter hingegen sind auch mehrtägige Aufgaben häufig von so geringer Komplexität, dass keine echte Planungsnotwendigkeit besteht. Lehrer (und Eltern) helfen durch regelmäßiges Eingreifen den Erfolg abzusichern. Aber es geht auch in der Grundschule schon anders. Die Frage ist: Wann werden einfache Aufgaben („Deck doch schon mal den Tisch“) so umfangreich, dass notwendigerweise in Planung, Realisierung und weitere Phasen unterteilt werden muss, ohne die Kinder dabei zu überfordern? Im Interview mit Steffi Widmann von der Schoenbergschule in Freiburg sprechen wir über Potenziale und Grenzen der Projektplanung in der Grundschule. Die GPM-Fachgruppe ‚Projektmanagement macht Schule‘ lobt nach eigener langjähriger Erfahrung in diesem Bereich das Engagement von Frau Widmann und unterstreicht die Vorbildwirkung. Das im Gespräch skizzierte Projekt einer dritten Klasse ist ausdrücklich zur Nachahmung empfohlen. - Prof. Steffen Rietz im Gespräch mit der Grundschullehrerin Steffi Widmann
Textkompetenz in den MINT-Fächern
No full textDer vorliegende Sammelband widmet sich dem Thema der Textkompetenz in den MINT-Fächern. Unter Textkompetenz wird dabei die Fähigkeit verstanden, Texte zu rezipieren, zu produzieren und aus ihnen zu lernen. Die Behandlung des Themas der Textkompetenz findet in drei Sektionen statt, die alle eine unterschiedliche Perspektive auf das Thema eröffnen: Textkompetenzentwicklung, Textsorten und Textqualität.This edited volume is dedicated to the topic of text literacy in STEM subjects. Text literacy is understood as the ability to receive, produce and learn from texts. The topic of text literacy is dealt with in three sections, each offering a different perspective on the topic: text literacy development, text types and text quality
Feasibility exploration for a robust and reliable wireless connection for AI-generatively designed, additively manufactured articulated robotic arms
No full textThis article provides insights into the feasibility study of the IP500® standard for use in robotics applications, specifically with the intent to utilize the CNX 200 module. The CNX 200 is a true dual-band module that enables a robust, reliable, and stable wireless connection. An articulated robot arm with six joints, designed using AI-based generative techniques, will serve as the reference product. Given that the robot is designed through generative methods, it is crucial to minimize any cabling. Therefore, the primary objective is to maintain only the power connections for the drivers, ensuring that all other communications and signals are transmitted via the wireless connection
Influence of microaeration on methanogenic community in a reverse - membrane reactor for Ex - situ biomethanation
No full textConventionally oxygen is considering as an inhibitor of methanogenesis process. However, a studies showed that in case of anaerobic digestion process the oxygen could improve the efficiency of the process. According to that results the impact of microaeration on ex – situ hydrogenotrophic methanogenesis was tested. As a result, it was observed a microorganism, belonging to Methanobacteriales order show a good tolerance for oxygen. The process moreover is not inhibited by load of oxygen equal to 0.45% in relation to injected hydrogen. The results showed a promising future for electrolysis powered with renewable energy sources, which sources are fluctuating and often depends on natural conditions, which force process to be ran in start – stop mode. The potential oxygen contamination could be tolerated by microorganisms according to obtained results. It is opening a new way to develop electrolysis and hydrogen production process
Flexible Edge Detection of Cuboidal Containers with a Wire Frame Model for Robot Based Plastic Welding
Get PDFPlastic welding is essential to fabricate process tanks in the field of semiconductor industries. Applying robot-assisted welding processes requires defining welding paths. Utilizing CAD/CAM or teach-in is both timeconsuming. In this contribution, we describe and discuss two approaches to automatically measure and extract welding paths with the robot. These approaches enable a flexible detection of welding-paths for automated plastic welding of cuboid containers
Renewable Energy Challenges and Market Dynamics in a Renewables Dominated Power System: The Case of the German Power System
No full textThe massive addition of renewables poses various challenges to system operators. The success of the German energy transition relies heavily on the availability of flexibility in the energy system. This paper investigates the market challenges and opportunities of achieving climate neutrality by 2045 in Germany. The analysis shows that in the absence of adequate incentives for storage systems, investments in gas power plants as a bridging technology may be necessary to ensure a secure supply. However, the long-term feasibility of these plants, especially post 2045 is questionable and could lead to underinvestment. Overcapacities from solar affect the utilization of other renewables. Despite renewables solely covering the demand for nearly 4500 hours, they will not be enough to achieve system security. The significance of storage flexibility becomes pronounced. However, they only experience high deployment after 2035. The insights of this work are crucial for sustainable energy planning and market design
Aktualisierung des International Professional Practices Framework für die Interne Revision
No full textLow Frequency Edge-Slot Vivaldi Antenna for Ground Penetrating Radar Applications
No full textThe low frequency performance of a proposed combined edge-slot Vivaldi antenna suitable for ground penetrating radar is investigated in this paper. By implementing edge slots in the conductor layer with an inverted triangular parasitic patch element in the aperture, the simulated gain and reflection coefficient parameters are improved compared to the conventional Vivaldi antenna. The modified antenna demonstrates wide impedance bandwith less than −10 dB with positive gain from 75 MHz to 1 GHz. A maximum gain above 7 dBi is realized in simulation. With its low frequency operation, gain improvement and low design profile, the proposed antenna is an important candidate for low frequency GPR applications
Tibial loading and damage accumulation in recreational and competitive male runners during a demanding 10 km run
No full textTibial stress injuries are problematic among runners. The loading magnitude is the most important mechanical contributor to bone damage accumulation, but loading quantity is also important, and faster runners require fewer loading cycles to complete a given distance than slower runners. This study estimated tibial loading and damage accumulation throughout a demanding 10-km run in recreational (RR) and competitive runners (CR). Male runners reporting a 10-km season-best run slower than 47:30 min (RR) or faster than 37:30 min (CR) completed a 10-km treadmill running protocol at 105% of their season's best time. Tibial loading was estimated from bending moments at the distal 1/3rd of the tibia by ensuring static equilibrium at each 1% of stance. Peak loading was obtained, and cumulative damage per kilometer was estimated using a tissue-dependent weighting factor. Peak tibial loading and damage accumulation per kilometer significantly decreased throughout the run, by 5% and 4%, respectively. Peak loading was significantly higher (31%) in CR than RR, and there was an indication (p = 0.058 and large effect size) of a greater rate of damage accumulation in CR than RR. Tibial loading per step and the rate of accumulation per kilometer decreased throughout a demanding 10-km run suggesting that changes in running mechanics as a result of prolonged running may not be a primary mechanism for stress injury development. Competitive runners experience greater peak tibial loading and possibly greater cumulative tibial damage when they complete 10 km faster than recreational runners
Females show worse functional outcome and quality of life compared to males 2 years after meniscus surgery: Data analysis from the German Arthroscopy Registry
No full textPurpose
The purpose of this study was to investigate the impact of sex on knee function, activity and quality of life following meniscus surgery using data from the German Arthroscopy Registry.
Methods
This is a retrospective cohort study with data collected between 2017 and 2022. Patient-reported outcome measures (PROMs), namely Knee Injury and Osteoarthritis Outcome Score (KOOS), EuroQol Visual Analogue Scale (EQ Scale), and Marx Activity Rating Scale (MARS), were collected preoperatively and at 6, 12 and 24 months postoperatively. Data were analysed to examine differences between male and female patients regarding PROMs, pre-existing conditions, meniscus lesion types and surgical treatments.
Results
A total of 1106 female (36.6%) and 1945 male patients (63.7%) were included. Males were significantly younger than females and had a higher body mass index. Overall, there were four times more medial meniscus lesions (MMLs) (77.5%) than lateral meniscus lesions (LMLs) (27.9%). Degenerative LMLs were more frequent in females, while traumatic LMLs were more common in males. Frequencies of traumatic and degenerative MMLs were similar among males and females. Males had higher absolute KOOS irrespective of treatment or meniscus lesion type. Meniscus repair resulted in similar improvements in ΔKOOS for both sexes, while meniscus resection exhibited higher absolute KOOS for males at each time point. Males generally had higher EQ Scale and MARS than females.
Conclusion
Greater improvements in knee function, activity and quality of life were observed in males. While MMLs appear to be comparable among sexes, the nature of LML differed significantly. These results may help surgeons to refine patient selection for specific treatments to improve overall clinical outcomes.
Level of Evidence
Level III