Classical trajectory Monte Carlo model calculations for the antiproton-induced ionization of atomic hydrogen at low impact energy

The three-body dynamics of the ionization of the atomic hydrogen by 30 keV antiproton impact has been investigated by calculation of fully differential cross sections (FDCS) using the classical trajectory Monte Carlo (CTMC) method. The results of the calculations are compared with the predictions of quantum mechanical descriptions: The semi-classical time-dependent close-coupling theory, the fully quantal, time-independent close-coupling theory, and the continuum-distorted-wave-eikonal-initial-state model. In the analysis particular emphasis was put on the role of the nucleus-nucleus (NN) interaction played in the ionization process. For low-energy electron ejection CTMC predicts a large NN interaction effect on FDCS, in agreement with the quantum mechanical descriptions. By examining individual particle trajectories it was found that the relative motion between the electron and the nuclei is coupled very weakly with that between the nuclei, consequently the two motions can be treated independently. A simple procedure is presented by which the NN interaction effect can be included into the calculations carried out without it.Comment: 8 pages, 6 figure

The Effect of Talking Stick Learning Model Toward Students' History Learning Outcomes

Abstract. This eksperimental study aims to determine the effect and difference of talking stick learning. The research design used was posttest-Only Control Group design. The population in this study amounted to 78 students. Sampling technique uses cluster random sampling. This study uses a sample of two classes. Data collection methods using test and documentation. Data analysis using simple regression test and independent sample Ttest test using SPSS 19.0. the result of the analysis of simple regression test data are t count table, so Ho is rejected and Ha is accepted which means that there is influence of the use of cooperative learning model talking stick type on history studies learning outcomes of XI grade students of Pelita high school three. The result of analysis of independent sample t test tess data are t count t table, so Ho is rejected and Ha is accepted which means that there is a difference in the use of cooperative learning model talking stick type on history students learning outcomes of XI grade students Pelita high school three.Keywords: Talking Stick model, learning outcomes.Abstrak.  Penelitian eksperimen ini bertujuan untuk mengetahui pengaruh dan perbedaan pembelajaran Talking Stick. Desain penelitian yang digunakan adalah desain post test kontrol grup. Populasi dalam penelitian ini berjumlah 78 siswa. Tekhnik pengambilan sampel menggunakan tekhnik random sampling. Penelitian ini menggunakan sampel dua kelas. Metode pengumpulan data menggunakan tes dan dokumentasi. Analisis data menggunakan uji regresi sederhana dan uji sampel independen Ttest menggunakan SPSS 19.0. Hasil analisis data uji regresi sederhana adalah t hitung tabel, sehingga Ho ditolak dan Ha diterima yang berarti ada pengaruh penggunaan model pembelajaran kooperatif tipe talking stick terhadap hasil belajar Sejarah siswa kelas XI IPS SMA Pelita Tiga. Hasil analisis data uji t sampel bebas adalah t hitung t tabel, sehingga Ho ditolak dan Ha diterima yang berarti ada perbedaan dalam penggunaan model pembelajaran kooperatif tipe talking stick pada hasil pembelajaran Sejarah siswa kelas XI IPS SMA Pelita Tiga.Kata Kunci: Model Talking Stick, Hasil belajar

Development of Mind Mapping-Based E-Book in Steam for Skills Skills of Grade VI Elementary School Students

This research aims to develop a Mind Mapping-Based E-Book in steam learning science lesson materials by considering the characteristics, feasibility, and effectiveness of its use in elementary school classes. Tests are conducted to material experts, media experts, and students. The model used as the basis for the development of Mind Mapping-Based E-Book is ADDIE with its steps Analyze, Design, Develop, implement and evaluate. Data analysis techniques are observations and questionnaires. Based on the test results, the material expert validation results showed the material is classified as a very good category with a score of 82.62%. Media quality by linguists is classified as very good with a 90% score category. Media quality by media experts is classified as very good with a score of 85% teacher response test results fall into the category of excellent with a score of 87%. Based on the percentage of score scored it appears that Mind Mapping-based E-Books are well-category and worth using

Group Investigation Learning in Developing 21st Century Skills of Elementary School Students

The 21st century is a century where all information and technology is growing rapidly as if without a barrier that requires humans to have the skills to be able to compete in this century. This skill does not just appear in humans but through a process of habituation. This process can be obtained through educational institutions. The right age to develop 21st-century skills is to start when children enter elementary school age. Educational institutions through the teaching process by teachers will help students to develop 21st-century skills such as critical thinking skills, problem-solving skills, collaboration skills, communication skills, and creativity. These skills can be developed through an innovative, creative, and involving learning process. students are actively involved in the learning process. One of the models or methods that can be used by teachers is group investigation learning. Group investigation is cooperative learning that puts forward cooperation in teams to carry out investigations in completing the assigned tasks. This study collects previous studies on the application of group investigation learning in developing 21st-century skills in elementary school students. This study uses search data from Google Scholar through an explanation of qualitative metasummary forms. After carrying out the selection, 10 journal articles were selected to be studied in this study. The results of the analysis show that group investigation learning has a significant influence in developing critical thinking skills, problem-solving skills, cooperative skills, communication skills, and students' creativity

A diszlexiás nyelvtanulók angoltanításának kérdései

A tanulmány összefoglalja a diszlexiás nyelvtanulók leggyakoribb nehézségeit és a leggyakrabban ajánlott tanítási technikákat, továbbá kitér a kérdéssel kapcsolatos fontosabb jogszabályokra is

Deceptive AI and Society

Deceptive artificial intelligence (AI) is a heavily loaded term. Its semantic load has become exponentially heavier in a very short period of time. Perhaps, most of this semantic load, at least in the recent public sphere, has been placed on it because of the deployment of large language models (LLMs), such as ChatGPT. Deceptive AI is very multifaceted. Different AI approaches give rise to different types of AI technologies, or, in some cases, autonomous agents. Some of these technologies already exist in practice, others exist in theory, some are transitioning between theory to implementation, and, finally, some are still only fictions of our shared imagination [62]

Self-Governing Hybrid Societies and Deception

Self-governing hybrid societies are multi-agent systems where humans and machines interact by adapting to each other’s behaviour. Advancements in Artificial Intelligence (AI) have brought an increasing hybridisation of our societies, where one particular type of behaviour has become more and more prevalent, namely deception. Deceptive behaviour as the propagation of disinformation can have negative effects on a society's ability to govern itself. However, self-governing societies have the ability to respond to various phenomena. In this paper we explore how they respond to the phenomenon of deception from an evolutionary perspective considering that agents have limited adaptation skills. Will hybrid societies fail to govern deceptive behaviour and reach a Tragedy of The Digital Commons? Or will they manage to avoid it through cooperation? How resilient are they against large-scale deceptive attacks? We provide a tentative answer to some of these questions through the lens of evolutionary agent-based modelling, based on the scientific literature on deceptive AI and public goods games

Question d’ateliers étude des retables polyptiques transylvains, envisagés comme expression des relations artistiques entre les peuples saxon et sicul | Workshop matters. Artistic relations between Saxons and Székelys in the mirror of Transylvanian altarpieces

Emese Sarkadi Nagy observe la frontière entre les pays sicules et saxons, cherchant les filiations artistiques entre les principaux ateliers et les artistes locaux. Dépassant la seule question artistique, elle place son étude dans le contexte intellectuel, économique et politique de la Transylvanie aux XVe et XVIe siècles. | Emese Sarkadi Nagy studies the interaction between the Székely and the Saxon territories at the beginning of the 16th century. She analyses artistic relations and influences and the circumstances of the workshops in the region in which altars were made. In addition to examining art, she reflects on the intellectual, economical and political context of Transylvania in the 15th and the 16th centuries

Free evolution of an incoherent mixture of states: a quantum mechanical approach to the van Cittert-Zernike theorem

We study the time evolution of an incoherent mixture of quantum states and demonstrate, in very simple terms, a quantum mechanical equivalent of van Cittert–Zernike theorem, which can be easily explained to Quantum Physics students with a basic knowledge of the density matrix theory. Finally, we exemplify this result by applying it to the quantitative analysis of the coherence of a beam of particles in atomic collisions.Fil: Fabre, Ignacio. Comisión Nacional de Energía Atómica. Centro Atómico Bariloche; Argentina. Comisión Nacional de Energía Atómica. Gerencia del Área de Energía Nuclear. Instituto Balseiro; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; ArgentinaFil: Navarrete, Francisco Oscar. Comisión Nacional de Energía Atómica. Centro Atómico Bariloche; Argentina. Comisión Nacional de Energía Atómica. Gerencia del Área de Energía Nuclear. Instituto Balseiro; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; ArgentinaFil: Sarkadi, L.. Hungarian Academy of Sciences; HungríaFil: Barrachina Tejada, Raul Oscar. Comisión Nacional de Energía Atómica. Centro Atómico Bariloche; Argentina. Comisión Nacional de Energía Atómica. Gerencia del Área de Energía Nuclear. Instituto Balseiro; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentin