The Gamification Framework of Military Flight Simulator for Effective Learning and Training Environment

The purpose of this thesis is to develop a framework for the gamification of flight simulators to provide an active learning and training environment for military jet pilots. Currently, with the development of visual displays and computer processing capabilities, the modern simulator has made great progress in visual and auditory terms that is incomparable to the past. In addition, functions that were previously implemented through supercomputers and complex hardware devices are now available through desktop computers at an affordable cost. Despite these advances, the simulators so far are thought to have been negligent in building an active learning and training environment for users, focusing only on such things as sound and visual immersion and training requirements. On top of that, misbelief in the effectiveness of pilots\u27 flight simulators, old paradigms failing to keep up with computer technology, and lack of instructor manpower have not led to the progress of simulator training programs. Meanwhile, studies show that the gamified system, which has become an increasingly hot topic in business, health care, and education over the past decade, has made users more motivated and actively engaged in the use of specific platforms. And the resulting effect was also positive. This Research aimed: (1) to examine a research-based Gamification Framework to understand the concept of a gamified system, (2) to identify pilots\u27 flight training needs and motivations, (3) and finally to suggest evaluation tool with example. The Gamification Framework of Flight Simulator(GFFS) was designed on the basis of research and a survey conducted for Korean Air Force fighter pilots for detailed Gamified Flight Simulator(GFS) evaluation tool. GFFS was modified and applied from Kim\u27s gamification framework and the Octalysis framework was used to identify and compare pilots\u27 needs and motivation factors

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Structure investigation of single specimens with femtosecond X-ray laser: Routes to signal-to-noise ratio enhancements

Interest in atomic scale structures of individual specimens has invigorated developments of high-resolution probes, which include single-particle imaging using x-ray free-electron lasers (XFELs). The demonstrated spatial resolution, however, remains at tens of nanometers with difficulty in collecting diffraction signals at high frequency distinguished from noises. As such, various resolution-enhancement methods have been introduced, but few experimental verifications are available. Here, by carrying out XFEL single-pulse diffraction experiments, we explicitly unveil the dependence of SNRs on incident xray flux, data averaging, or multiparticle interference. We further propose a data-accumulation method of resolution-shell averaging as a robust scheme to improve the SNR. This study establishes a roadmap with which high-resolution XFEL single-pulse experiments can be contrived.11Nsciescopu

Stochastic chromatin packing of 3D mitotic chromosomes revealed by coherent X-rays

DNA molecules are atomic-scale information storage molecules that promote reliable information transfer via fault-free repetitions of replications and transcriptions. Remarkable accuracy of compacting a few-meters-long DNA into a micrometer-scale object, and the reverse, makes the chromosome one of the most intriguing structures from both physical and biological viewpoints. However, its three-dimensional (3D) structure remains elusive with challenges in observing native structures of specimens at tens-of-nanometers resolution. Here, using cryogenic coherent X-ray diffraction imaging, we succeeded in obtaining nanoscale 3D structures of metaphase chromosomes that exhibited a random distribution of electron density without characteristics of highorder folding structures. Scaling analysis of the chromosomes, compared with a model structure having the same density profile as the experimental results, has discovered the fractal nature of density distributions. Quantitative 3D density maps, corroborated by molecular dynamics simulations, reveal that internal structures of chromosomes conform to diffusion-limited aggregation behavior, which indicates that 3D chromatin packing occurs via stochastic processes.11Nsciescopu

Ultrafast resonant X-ray scattering investigation of non-thermal melting using XFELs

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High-Throughput 3D Ensemble Characterization of Individual Core–Shell Nanoparticles with X-ray Free Electron Laser Single-Particle Imaging

The structures as building blocks for designing functional nanomaterials have fueled the development of versatile nanoprobes to understand local structures of noncrystalline specimens. Progress in analyzing structures of individual specimens with atomic scale accuracy has been notable recently. In most cases, however, only a limited number of specimens are inspected lacking statistics to represent the systems with structural inhomogeneity. Here, by employing single-particle imaging with X-ray free electron lasers and algorithms for multiple-model 3D imaging, we succeeded in investigating several thousand specimens in a couple of hours and identified intrinsic heterogeneities with 3D structures. Quantitative analysis has unveiled 3D morphology, facet indices, and elastic strain. The 3D elastic energy distribution is further corroborated by molecular dynamics simulations to gain mechanical insight at the atomic level. This work establishes a route to high-throughput characterization of individual specimens in large ensembles, hence overcoming statistical deficiency while providing quantitative information at the nanoscale.11Nsciescopu