18 research outputs found

    Practical Implementation of Animation for Students of Pedagogical Studies at MIAS CTU in Prague

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    This paper shows computer animation as a teaching and learning instrument in technical education. Our aim is to show good practice in creating computer animations. The paper includes an example, which can serve as a practical guide for teachers of technical subjects

    A Taxonomy of Technical Animation

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    The age in which we are living nowadays is characterized by rapid innovation in the development of information and communication technologies (ICT). This innovation has a significant influence on the education process. This article deals with computer animation in technical education. Our aim is to show the taxonomy of education animation. The paper includes practical examples of animation

    Electronic Education at the Faculty of Nuclear Sciences and Physical Engineering

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    This paper deals with the current issue of electronic education, and is based on a study of Internet support for education at the Faculty of Nuclear Sciences and Physical Engineering at the Czech Technical University in Prague.The goal of the study was to establish to what extent and in what ways electronic support for education is utilized at FNSPE CTU. In order to answer these questions, a questionnaire was conducted at the faculty. We will present the outcomes here.

    Electronic Education

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    The age in which we are living nowadays is characterized by rapid innovation in the development of information and communication technologies (ICT). This innovation has a significant influence on the education process. This paper deals with e-learning

    A Taxonomy of Technical Animation

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    The age in which we are living nowadays is characterized by rapid innovation in the development of information and communication technologies (ICT). This innovation has a significant influence on the education process. This article deals with computer animation in technical education. Our aim is to show the taxonomy of education animation. The paper includes practical examples of animation

    Isaac: Building Simulations for Virtual Environments

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    This paper describes the architecture and initial implementation of the Isaac system. Our general research goal is to develop simulation support for virtual environments. Existing virtual environments are often graphically rich, but behaviorally impoverished. On the other hand, existing physical system simulation software is not well-suited for use within virtual environments. The Isaac system is a distributed simulation server that integrates multibody dynamics, geometry, and control and is designed to support the needs of virtual environments. Keywords rigid-body dynamics, simulation, virtual environments, geometric modeling, contact, collisions, control. 1 INTRODUCTION Existing virtual environments are often visually rich but behaviorally impoverished; users may be able to walk through geometrically complex worlds rendered using high-performance graphics hardware and software, but the worlds are typically populated with objects that do not behave as humans expect them to. Either u..

    Branchioma: immunohistochemical and molecular genetic study of 23 cases highlighting frequent loss of retinoblastoma 1 immunoexpression

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    Branchioma is an uncommon benign neoplasm with an adult male predominance, typically occurring in the lower neck region. Different names have been used for this entity in the past (ectopic hamartomatous thymoma, branchial anlage mixed tumor, thymic anlage tumor, biphenotypic branchioma), but currently, the term branchioma has been widely accepted. Branchioma is composed of endodermal and mesodermal lineage derivatives, in particular epithelial islands, spindle cells, and mature adipose tissue without preexistent thymic tissue or evidence of thymic differentiation. Twenty-three branchiomas were evaluated morphologically. Eighteen cases with sufficient tissue were assessed by immunohistochemistry, next-generation sequencing (NGS) using the Illumina Oncology TS500 panel, and fluorescence in situ hybridization (FISH) using an RB1 dual-color probe. All cases showed a biphasic morphology of epithelial and spindle cells with intermingled fatty tissue. Carcinoma arising in branchioma was detected in three cases. The neoplastic cells showed strong AE1/3 immunolabeling (100%), while the spindle cells expressed CD34, p63, and SMA (100%); AR was detected in 40-100% of nuclei (mean, 47%) in 14 cases. Rb1 showed nuclear loss in ≥ 95% of neoplastic cells in 16 cases (89%), while two cases revealed retained expression in 10-20% of tumor cell nuclei. NGS revealed a variable spectrum of likely pathogenic variants (n = 5) or variants of unknown clinical significance (n = 6). Loss of Rb1 was detected by FISH in two cases. Recent developments support branchioma as a true neoplasm, most likely derived from the rudimental embryological structures of endoderm and mesoderm. Frequent Rb1 loss by immunohistochemistry and heterozygous deletion by FISH is a real pitfall and potential confusion with other Rb1-deficient head and neck neoplasms (i.e., spindle cell lipoma), especially in small biopsy specimens

    Synchronization of Three-Scroll Unified Chaotic System (TSUCS) and its hyper-chaotic system using active pinning control

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    This paper studies the synchronization and anti-synchronization problem of the Three-Scroll Unified Chaotic System (TSUCS), which has nonlinear terms in each subsystem. By virtue of active control, a novel active pinning control strategy is presented, which only needs one or two states of the TSUCS. Under the proposed controller, the synchronization of two TSUCS with parametric uncertainty is achieved and therefore the robust stability of TSUCS synchronization is ensured. Some stability theories about synchronization and anti-synchronization have been given and proved the use of this class of a novel TSUCS and its hyper-unified chaotic system with the active pinning control strategy. Numerical simulations are given to verify the theoretical analysis, which clearly shows that the control strategy can really make the chaotic systems achieve synchronization and antisynchronization in a quite short time
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