• Annual Conference of KIPS
• /
• 2015.10a
• /
• pp.1134-1137
• /
• 2015

'영화 시나리오를 기반으로 영화를 어떻게 추천할 수 있는가'에서 본 논문에서는 전통적인 사회관계망 분석 지표 중 그래프의 평균 길이와 평균 군집도 그리고 밀도를 이용하여 3차원의 데이터 집합을 산출했고, 산출한 데이터 집합을 기반으로 k-means 군집화 알고리즘을 활용하여 각 k 값에 따른 영화를 추천해보았다. 그 결과 기타 여느 추천들과 다른 추천결과를 도출해냈다.

• Annual Conference of KIPS
• /
• 2015.04a
• /
• pp.716-719
• /
• 2015

'영화 속에 등장하는 주연들은 어떤 기준으로 선정되는가'에서 본 논문에서는 두 가지 방법을 활용하여 주연들을 추출해보았다. 그 결과 가중치 연결 중심도를 이용한 검출 방법이 공식적인 주연급 등장인물과 일치한다는 것을 도출해냄.

• Transactions on Electrical and Electronic Materials
• /
• v.12 no.4
• /
• pp.156-159
• /
• 2011

SiNx:H films have been widely used for anti-reflection coatings and passivation for crystalline silicon solar cells. In this study, SiNx:H films were deposited using high frequency (13.56 MHz) direct plasma enhanced chemical vapor deposition, and the optical and passivation properties were investigated. The radio frequency power, the spacing between the showerhead and wafer, the $NH_3/SiH_4$ ratio, the total gas flow, and the $N_2$ gas flow were changed over certain ranges for the film deposition. The thickness uniformity, the refractive index, and the minority carrier lifetime were then measured in order to study the properties of the film. The optimal deposition conditions for application to crystalline Si solar cells are determined from the results of this study.

• Earthquakes and Structures
• /
• v.13 no.6
• /
• pp.573-588
• /
• 2017

The earthquake input is required when the soil-structure interaction (SSI) analysis is performed by the direct finite element method. In this paper, the earthquake is considered as the obliquely incident plane body wave arising from the truncated linearly elastic layered half space. An earthquake input method is developed for the time-domain three-dimensional SSI analysis. It consists of a new site response analysis method for free field and the viscous-spring artificial boundary condition for scattered field. The proposed earthquake input method can be implemented in the process of building finite element model of commercial software. It can result in the highly accurate solution by using a relatively small SSI model. The initial condition is considered for the nonlinear SSI analysis. The Daikai subway station is analyzed as an example. The effectiveness of the proposed earthquake input method is verified. The effect of the obliquely incident earthquake is studied.

• ETRI Journal
• /
• v.46 no.4
• /
• pp.660-670
• /
• 2024

The performance of face recognition (FR) has reached a plateau for public benchmark datasets, such as labeled faces in the wild (LFW), celebrities in frontal-profile in the wild (CFP-FP), and the first manually collected, in-the-wild age database (AgeDB), owing to the rapid advances in convolutional neural networks (CNNs). However, the effects of faces under various fine-grained conditions on FR models have not been investigated, owing to the absence of relevant datasets. This paper analyzes their effects under different conditions and loss functions using K-FACE, a recently introduced FR dataset with fine-grained conditions. We propose a novel loss function called MixFace, which combines classification and metric losses. The superiority of MixFace in terms of effectiveness and robustness was experimentally demonstrated using various benchmark datasets.

• Bulletin of the Korean Chemical Society
• /
• v.33 no.2
• /
• pp.703-706
• /
• 2012

• Journal of Engineering Education Research
• /
• v.13 no.6
• /
• pp.122-131
• /
• 2010

This paper suggests teaching philosophy of technology in engineering ethics class, as a realistic solution for convergence education of engineering and humanities. First, the need for convergence between engineering and humanities are presented, which is followed by the analysis of the current convergence education in Korea, especially since the introduction of the ABEEK. Third, the proposal for teaching philosophy of technology in engineering ethics will be presented, together with the expected effect of such a trial. Finally, the actual implementation of this curricula will be introduced. In 2008 and 2009, the engineering ethics course in Handong Global University adopted this proposal. The evaluation of students will be examined, which indicates the direction that the convergence of engineering and humanities should take.

• 제어로봇시스템학회:학술대회논문집
• /
• 2004.08a
• /
• pp.1195-1200
• /
• 2004

We introduce an introductory engineering education course for engineering majors and non-engineering majors. This course does not require any previous knowledge and experience on engineering. It requires strong curiosities and imaginations on current and future society we live in, where technology is inseparable ingredient. Course encourages attendees to explore fundamental issues of engineering: what is proper technology and what are proper ways of exercising engineering, issues dealt in soft engineering. Since course topics cover many aspects of technology, traditional learning methods fail to be successful and efficient. Various efficient learning methods have been proposed and implemented. We utilize various interactive tangible media, which include simulated thought experiments and physical media experiences. About 20 episodes in short film format are produced based on scenario written according to related issues selected. Physical media like interactive robots are introduced for attendees' stimulated experiences. We summarize our exciting experiments on interactive teaching experiences at Pusan National University which include on/off-line interactions, assignments, projects, and evaluations.

• Journal of Engineering Education Research
• /
• v.15 no.6
• /
• pp.92-97
• /
• 2012

This paper deals with the model of natural sciences and engineering's convergence education. Recently, convergence education's necessary is needed since the most of new products are designed and produced based on the convergence technology. But our country's education system is keeping existing education process. This make industrial world undurable to employ the current graduated students. Also in view of educational world, they have no proper convergence education model for their students. In this paper, to solve the non-existing convergence education model, we derive the a few convergence education model and list up their model each. This result will be helpful for the introducer of the convergence education system.

• Nuclear Engineering and Technology
• /
• v.56 no.1
• /
• pp.147-159
• /
• 2024

Plutonium-238 has always been considered as the one of the promising radioisotopes for space nuclear power supply, which has long half-life, low radiation protection level, high power density, and stable fuel form at high temperatures. The industrial-scale production of ²³⁸Pu mainly depends on irradiating solid ²³⁷NpO₂ target in high flux reactors, however the production process faces problems such as large fission loss and high requirements for product quality control. In this paper, a conceptual design study of producing ²³⁸Pu in a multi-purpose high flux reactor was evaluated and analyzed, which includes a sensitivity analysis on ²³⁸Pu production and a further study on the irradiation scheme. It demonstrated that the target structure and its location in the reactor, as well as the operation scheme has an impact on ²³⁸Pu amount and product quality. Furthermore, the production efficiency could be improved by optimizing target material concentration, target locations in the core and reflector. This work provides technical support for irradiation production of ²³⁸Pu in high flux reactors.