Prehliadanie podľa Autor "Plesch, Martin"

Teraz sa zobrazuje 1 - 6 z 6
  • Obrázok miniatúry
    Položka
    Development of soft and hard skills of high-school students via young physicists' tournament
    (IOP Publishing : Bristol, 2025) Faletič, Sergej; Kyuldjiev, Assen; Lindner, Thomas; Schnider, Dorottya; Izsa, Éva; Hömöstrei, Mihály; Jenei, Péter; Aneva, Boyka; Ivanova, Daniela D.; Němec, Hynek; Kundracik, František; Plesch, Martin
    The Young Physicists’ Tournament (YPT) inspires high-school students to immerse themselves into an inquiry process closely resembling real physics research. Using questionnaires’ replies from the students and their teachers engaged in the YPT, we investigated the perception of teachers and students on how the preparation for the YPT contributes to the development of hard skills (physics content knowledge, mathematics, modelling…) and soft skills (communication, team work, organization…) of the students, and how it compares to regular classes and other activities. This comparison shows a positive role of the YPT among students, and even a more positive perception among teachers. The significant development of a wide range of advanced skills justifies the substantial effort, resources and dedication of both teachers and students required for the participation in the YPT.
  • Obrázok miniatúry
    Položka
    Effectiveness of mass marking of juvenile sterlet (Acipenser ruthenus) with alizarin red S stain on field detection
    (Hoboken : John Wiley & Sons, 2025) Šindler, Martin; Buřič, Miloš; Plesch, Martin; Franta, Pavel; Drozd, Bořek
    Sterlet (Acipenser ruthenus), one of the last sturgeons in the Danube basin, is regularly stocked in national and international restoration programs, but the efficacy of stocking has not yet been evaluated. Effectiveness of stocking should involve marking and evaluating growth and survival of juveniles. Chemical marking with alizarin red S (ARS) was evaluated to establish optimal ARS staining approaches for juvenile sterlet. Bathing in a 100–200 mg l−1 ARS concentration for 12 h had no affect on fish mortality or growth. Use of a green laser on the upper five external structures (dorsal, lateral, and ventral scutes and rostral and anal plates) allowed easy detection for at least a year. Simultaneous use of multiple external structures was effective for distinguishing stocked from wild fish without harm or sacrifice. We conclude that ARS staining enabled a cost-effective, quick, and labour-nonintensive way to mark sterlet, with a high-field detectability and minimal previous experience required.
  • Obrázok miniatúry
    Položka
    Harmonic oscillator based particle swarm optimization
    (Public Library of Science : San Francisco, 2025) Chernyak, Yury; Mohammad, Ijaz Ahamed; Masnicak, Nikolas; Pivoluska, Matej; Plesch, Martin
    Numerical optimization techniques are widely applied across various fields of science and technology, ranging from determining the minimal energy of systems in physics and chemistry to identifying optimal routes in logistics or strategies for high-speed trading. Here, we present a novel method that integrates particle swarm optimization (PSO), a highly effective and widely used algorithm inspired by the collective behavior of bird flocks searching for food, with the physical principle of conserving energy and damping in harmonic oscillators. This physics-based approach allows smoother convergence throughout the optimization process and wider tunability options. We evaluated our method on a standard set of test functions and demonstrated that, in most cases, it outperforms its natural competitors, including the original PSO, as well as commonly used optimization methods such as COBYLA and Differential Evolution.
  • Obrázok miniatúry
    Položka
    Meta-optimization of resources on quantum computers
    (Nature Publishing Group : London, 2025) Mohammad Ijaz, Ahamed; Pivoluska, Matej; Plesch, Martin
    The current state of quantum computing is commonly described as the Noisy Intermediate-Scale Quantum era. Available computers contain a few dozens of qubits and can perform a few dozens of operations before the inevitable noise erases all information encoded in the calculation. Even if the technology advances fast within the next years, any use of quantum computers will be limited to short and simple tasks, serving as subroutines of more complex classical procedures. Even for these applications the resource efficiency, measured in the number of quantum computer runs, will be a key parameter. Here we suggest a general meta-optimization procedure for hybrid quantum-classical algorithms that allows finding the optimal approach with limited quantum resources. This method optimizes the usage of resources of an existing method by testing its capabilities and setting the optimal resource utilization. We demonstrate this procedure on a specific example of variational quantum algorithm used to find the ground state energy of a hydrogen molecule.
  • Obrázok miniatúry
    Položka
    Optics experiments as a tool for developing critical thinking in physics education
    (IOP Publishing : Bristol, 2025) Spodniaková Pfefferová, Miriam; Plesch, Martin
    Experimental activities are an essential part of physics education. In addition to conveying scientific knowledge, they play a significant role in developing scientific literacy, inquiry skills, and critical thinking. In today’s world, where students are exposed to vast amounts of information of varying quality, the ability to analyse, evaluate, and interpret information correctly has become increasingly important. This paper presents a series of physics experiments in the field of optics, specifically designed to foster critical thinking at various stages of the inquiry process. The topic of optics was chosen deliberately, as many optical phenomena occur naturally in everyday life, are familiar to students, and stimulate their curiosity. At the same time, they provide space for formulating hypotheses, designing experiments, interpreting data, and evaluating alternative explanations. Each experiment begins with a real-life problem situation that students are expected to explore and resolve through their own investigative work. The tasks are structured to encourage discussion, require argumentation, and promote reflection on both the process and the outcomes. The proposed experiments are suitable for students at both primary and secondary school levels and can be implemented in formal as well as non-formal educational settings. The aim of this contribution is to demonstrate how well-designed and pedagogically grounded experiments can not only enhance the understanding of physical concepts but also systematically develop critical thinking skills – one of the key competencies of 21st-century education.
  • Obrázok miniatúry
    Položka
    The use of a simple digital weather station (not only) in teaching physics
    (IOP Publishing : Bristol, 2025) Hruška, Martin; Plesch, Martin
    One of key goals of contemporary physics (and, realistically, STEM) education is to develop students’ science literacy and critical thinking skills. In this paper, we present the construction and use of several versions of a simple school-based digital weather station that students can use to measure fundamental physical quantities (temperature, pressure, air humidity, light intensity) as part of school activities. The weather stations were constructed at our workplace using an Arduino microcontroller, BBC micro: bit, and the school measurement system Coach. This paper proposes not only the design and related programming of the weather stations but also how students can collect, analyse, and interpret measured data, thereby learning scientific methods and developing science literacy and critical thinking. This hands-on approach also develops students’ experimental skills, emphasises the cross-curricular relationships between physics, computer science and geography, and teaches them to work with accurate data in the context of real environmental problems.