http://chineseinput.net/에서 pinyin(병음)방식으로 중국어를 변환할 수 있습니다.
변환된 중국어를 복사하여 사용하시면 됩니다.
Development and Distribution of Deep Fake e-Learning Contents Videos Using Open-Source Tools
HO, Won,WOO, Ho-Sung,LEE, Dae-Hyun,KIM, Yong Korea Distribution Science Association 2022 유통과학연구 Vol.20 No.11
Purpose: Artificial intelligence is widely used, particularly in the popular neural network theory called Deep learning. The improvement of computing speed and capability expedited the progress of Deep learning applications. The application of Deep learning in education has various effects and possibilities in creating and managing educational content and services that can replace human cognitive activity. Among Deep learning, Deep fake technology is used to combine and synchronize human faces with voices. This paper will show how to develop e-Learning content videos using those technologies and open-source tools. Research design, data, and methodology: This paper proposes 4 step development process, which is presented step by step on the Google Collab environment with source codes. This technology can produce various video styles. The advantage of this technology is that the characters of the video can be extended to any historical figures, celebrities, or even movie heroes producing immersive videos. Results: Prototypes for each case are also designed, developed, presented, and shared on YouTube for each specific case development. Conclusions: The method and process of creating e-learning video contents from the image, video, and audio files using Deep fake open-source technology was successfully implemented.
Howon Kim,Youngtae Sung,Euisoon Jeong J-INSTITUTE 2022 Regulations Vol.7 No.1
Purpose: This study comprehensively identified which of the sub-Factor s of organizational fairness they per-ceived had a positive effect on organizational effectiveness. In addition, this study verified how power distance tendency, an individual characteristic variable, affects the relationship between their job satisfaction, organiza-tional commitment, and organizational citizenship behavior. Method: The scope and method of this study are as follows. First, the time range of the study ran from Decem-ber 1, 2020 until December 30, 2020, and the spatial range of the study was the Daegu Metropolitan Police Agency, 10 police stations affiliated, and 31 patrol divisions within the police station. Second, as for the method of the study, a reference study and an empirical study were concurrently conducted via a questionnaire survey. Results: The results of this study are as follows. First, it was found that the organizational fairness perceived by police officers had a significant positive effect on organizational effectiveness. Second, in the influence of power distance tendency on organizational effectiveness, it was found that the higher the power distance tendency, the more negative effect on job satisfaction, organizational commitment, and organizational citizenship behavior. Conclusion: The implications of this study are as follows. First, the establishment of a fair police organizational culture should precede. Second, in order to ensure that individual police officers have an active and positive attitude in enhancing organizational effectiveness, organizational efforts should be made to resolve complaints based on compensation results. Third, it is necessary to solve operational problems by receiving expert diagnoses on the operation of the performance-based pay system of the police organization and to actively collect and reflect the opinions of police officers who are subject to application.
DaHOG-based Mobile Robot Indoor Global Localization
Howon Cheong,Euntai Kim,Sung-Kee Park 제어로봇시스템학회 2020 제어로봇시스템학회 국제학술대회 논문집 Vol.2020 No.10
This paper suggests an indoor environment descriptor and global localization strategies for indoor robot navigation using a metric sensor and mono camera. Other researches use various feature descriptors (i.e. geometric features, visual local invariant features, and objects) for robot pose estimation. However, most of the real environments have repeated similar texture patterns or few objects although they need salient information for successful localization. To overcome this problem, we suggest a new environment descriptor, which is composed of the histogram of oriented gradient(HOG) and approximated 2D-polar coordinate distance of visual vertical edges. We call it Distance-assisted HOG (DaHOG). For the matching process, we use the omnidirectional datasets that have a circular pattern matching problem. Here, we solve the problem by proposing a new global localization method based on a spectral matching technique. We show that our method is effective with experiments in real environments where there is a lack of distinctive features and objects.
Howon Lee,정지철,Heesoo Kim,정영민,Tae Jin Kim,Seung-Hoon Oh,Yong Seung Kim,Seong Jun Lee,송인규 한국화학공학회 2009 Korean Journal of Chemical Engineering Vol.26 No.4
Oxidative dehydrogenation of n-butene to 1,3-butadiene over ZnFe2O4 catalyst mixed with CsxH3−xPW12O40 heteropolyacid (HPA) was performed in a continuous flow fixed-bed reactor. The effect of CsxH3−xPW12O40 addition on the catalytic performance of ZnFe2O4 was investigated. CsxH3−xPW12O40 itself showed very low catalytic performance in the oxidative dehydrogenation of n-butene. However, addition of small amount of CsxH3−xPW12O40 into ZnFe2O4 enhanced the catalytic performance of ZnFe2O4 catalyst. The catalytic performance of ZnFe2O4-CsxH3−xPW12O40 mixed catalysts was closely related to the surface acidity of CsxH3−xPW12O40. Among the catalysts tested, ZnFe2O4-Cs2.5H0.5 PW12O40 mixed catalyst showed the best catalytic performance. Strong acid strength and large surface acidity of Cs2.5 H0.5PW12O40 was responsible for high catalytic performance of ZnFe2O4-Cs2.5H0.5PW12O40 mixed catalyst. Thus, Cs2.5 H0.5PW12O40 could be utilized as an efficient promoter and diluent in formulating ZnFe2O4 catalyst for the oxidative dehydrogenation of n-butene.
Hyperelliptic Curve Crypto-Coprocessor over Affine and Projective Coordinates
Howon Kim,Thomas Wollinger,Doo-Ho Choi,Dong-Guk Han,이문규 한국전자통신연구원 2008 ETRI Journal Vol.30 No.3
This paper presents the design and implementation of a hyperelliptic curve cryptography (HECC) coprocessor over affine and projective coordinates, along with measurements of its performance, hardware complexity, and power consumption. We applied several design techniques, including parallelism, pipelining, and loop unrolling, in designing field arithmetic units, group operation units, and scalar multiplication units to improve the performance and power consumption. Our affine and projective coordinate-based HECC processors execute in 0.436 ms and 0.531 ms, respectively, based on the underlying field GF(289). These results are about five times faster than those for previous hardware implementations and at least 13 times better in terms of area-time products. Further results suggest that neither case is superior to the other when considering the hardware complexity and performance. The characteristics of our proposed HECC coprocessor show that it is applicable to high-speed network applications as well as resource-constrained environments, such as PDAs, smart cards, and so on.
An Analysis into the Dose Rate of Photoneutron Occurring in a Linear Accelerator
Howon Jang(장호원),SeongJin Jin(진성진),Jaeyong Je(제재용) 한국방사선학회 2017 한국방사선학회 논문지 Vol.11 No.7
본 연구는 선형가속기를 이용하여 10 MV 광자선을 조사하는 과정에서 발생하는 광중성자의 선량률 변화를 측정하고자 하였다. 또한 방사선 조사가 종료된 후 광중성자의 수명을 분석하고자 하였다. 광중성자 측정은 BF3 비례계수관을 사용하였으며, 광중성자의 선량률 측정결과를 2초 간격으로 3부분으로 나누어 분석 하였다. 측정결과 조사야 내에 금속판이 없는 경우와 납판이 존재할 때 광중성자의 발생이 가장 빠르게 나타났으며, 최종적으로 백그라운드 수준의 선량률을 나타내는 시간은 물질의 종류와 무관하게 약 1분 40초 정도의 수명시간을 나타내었다. 따라서 광중성자가 수명을 다할 때까지의 시간에 따른 선량률은 물질의 종류와 임계에너지에 따라 다르게 나타내었다. 그러나 최종 수명시간은 물질의 종류에 관계없이 비슷한 결과를 나타내었으므로 물질의 종류가 광중성자의 수명시간에는 크게 관여하지 않는다고 판단되어진다. This research aims at measuring the changes in the dose rate of photoneutron occurring in the process of the investigation into the 10 MV photon beam with a linear accelerator. In addition, the life time of the photoneutron after the end of irradiation was to be analyzed. The photoneutron were measured with a BF3 proportional counter, and the measurement results of the dose rate of the photoneutron were analyzed in 3 parts at intervals of 2 seconds. The measurement results showed that the photoneutron were generated fastest when there was no metal plate inside the radiation field and when there was a lead plate, and that, as for the time that shows the final dose rate at the level of background, the life time was about 1 minute and 40 seconds regardless of the kinds of materials. Therefore, the dose rate according to the time until the photoneutron run out was proved to be different depending on the sorts of the materials and the threshold energy. However, final life time showed similar results regardless of the kinds of the materials, it can be concluded that the kinds of materials don t get involved in the life time of photoneutron.
Howon Lee,Taek Sun Jung,Hyun Jun Shin,Sang Hyup Oh,Kyung Ik Sim,Taewoo Ha,Young Jai Choi,Jae Hoon Kim 한국자기학회 2021 한국자기학회 학술연구발표회 논문개요집 Vol.31 No.2
We have conducted a terahertz spectroscopic study of the antiferromagnetic resonances in bulk orthoferrite YFe1-xMnxO₃ (0≤x≤0.4). Both the quasi-ferromagnetic resonance mode and the quasi-antiferromagnetic resonance mode in the weak ferromagnetic Г₄ phase disappear near the spin reorientation temperature, TSR, for the onset of the collinear antiferromagnetic Г₁ phase (x≥0.1). Below TSR, an antiferromagnetic resonance mode emerges and exhibits a large blue-shift with decreasing temperature. However, below 50 K, this mode softens considerably, and this tendency becomes stronger with Mn doping. We provide a deeper understanding of such behavior of the antiferromagnetic resonance modes in terms of the influence of the Mn<SUP>3+</SUP> ions on the magnetocrystalline anisotropy. Our results show that terahertz time-domain spectroscopy is a useful, complementary tool in tracking magnetic transitions and probing interaction between disparate magnetic subsystems in antiferromagnetic materials with multiple ionic species.