• 한국멀티미디어학회논문지
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• 제24권3호
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• pp.355-372
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• 2021

Recently, high-performance HMDs (Head-Mounted Display) are becoming wireless due to the growth of virtual reality technology. Accordingly, environmental constraints on the hardware usage are reduced, enabling multiple users to experience virtual reality within a single space simultaneously. Existing multi-user virtual reality platforms use the user's location tracking and motion sensing technology based on vision sensors and active markers. However, there is a decrease in immersion due to the problem of overlapping markers or frequent matching errors due to the reflected light. Goal of this study is to develop a multi-user virtual reality moving platform in a single space that can resolve sensing errors and user immersion decrease. In order to achieve this goal hybrid sensing technology was developed, which is the convergence of vision sensor technology for position tracking, IMU (Inertial Measurement Unit) sensor motion capture technology and gesture recognition technology based on smart gloves. In addition, integrated safety operation system was developed which does not decrease the immersion but ensures the safety of the users and supports multimodal feedback. A 6 m×6 m×2.4 m test bed was configured to verify the effectiveness of the multi-user virtual reality moving platform for four users.

• Communications for Statistical Applications and Methods
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• 제5권1호
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• pp.107-120
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• 1998

This research aims here to develop a certain extended double sampling plan, EDS, which is an extension of ordinary double sampling plan in the sense that the second-stage sampling effort and second-stage critical value are allowed to depend on the point at which the first-stage continuation region is traversed. For purpose of comparison, single sampling plan, optimal ordinary double sampling plan(ODS) and sequential probability ratio test are considered with the same overall error rates, respectively. It is observed that the EDS idea allows less sampling effort than the optimal ODS.

• 한국산업정보학회논문지
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• 제9권1호
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• pp.17-23
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• 2004

본 논문은 한국어정보처리에서 단어의 의미를 결정하기 위한 말뭉치 기반의 온톨로지 학습 방법을 제시하고 있다. 먼저 이미 확보된 전자사전의 정보를 이용하여 단어의 확실한 의미를 우선 결정한 후, 아직 결정하지 못한 단어의 의미는 온톨로지를 이용하여 최종 결정하는 절차를 거친다. 온톨로지를 단어 의미 중의성 해소를 위한 지식베이스로 사용하기 위해서는, 온톨로지 내 개념들간의 상호정보가 말뭉치의 통계 정보에 근거하여 미리 계산된다. 계산된 상호정보 값을 가중치로 간주하면 온톨로지는 가중치 그래프로 생각할 수 있으므로, 개념간 최소 경로를 통하여 개념간 연관도를 알아 볼 수 있다. 실제 기계번역 시스템에서 본 방법은 온톨로지를 사용하지 않은 방법보다 9％의 성능 향상을 가져오는 결과를 얻을 수 있었다.

• 영어영문학
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• 제64권3호
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• pp.347-360
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• 2018

It is ironic but not coincidental that the loss of Korean sovereignty to Japan roughly paralleled the formation of the idea of Korean ethnic identity. The coalescence of the content of this heretofore amorphous notion of a "pure" and transcendental (in the class sense) ethnic essence was, again ironically, the result both of ideologies taken from (or given by) Japan and resistance to Japanese encroachment. What resulted was the birth of a hybrid (sub) consciousness that was able to accommodate disparate, or even contradictory, realities simultaneously without any sense of contradiction (Christian and shaman for example). If, as Kim Chul has asserted, the colonial period was the most impactful in forming today's Korean society and "giving birth" to today's Korean, it becomes easy to imagine how this formation process included elements of Japanese and western culture. This meant that there was going to be an inevitable cognitive dissonance when these influences collided with the imperatives of ethnic nationalism which became the touchstone for a common Korean identity (North and South). This paper attempts to show how this split-consciousness was manifested in Yeom Sang seop's Manse jeon with the aim of identifying how it affects discourses related to nationalism and identity.

• 대한간호학회지
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• 제28권2호
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• pp.403-413
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• 1998

The Resilience is described as the personal capacity which brings psychosocial comeback. The role of nursing is to do its best to rehabilitate patients and to explore the individual in order to promote patients psychosocial change. However, as the current nursing is heavily physical nursing oriented, the identity of the nursing would be lost. Therefore this researcher reviewed if the concept of resilience can be applied to the nursing after examing the concept of resilience by Documents and Fieldwork. The methodology of this research is Hybrid Model developed by Schwartz-Barcott and Kim for the concept development and analysis. The process and procedure consist of The Theoretical Phase, The Fieldwork Phase and The Final Analytical Phase in accodance with the Hybrid Model. The followings the summary of the Research. 1. The Concept of Resilience Finally Analyzed by Documents and Fieldwork (1) The Redefinition of Resilience The resilience is the latent psychosocial capacity which minimize the negative emotion and promote the adaptation under adversity. Resilience appears as cognitive, emotional and behavioral response in the course of changing from negative response to positive response through the interaction of the individual and the enviroments in a given time. Resilience changes and decreases according to time and situation and it can be nurtured. Resilience is the higher concept including hardiness, sense of coherence and self-strength which maintain the health under stress. (2) The Attribute of Resilience The attribute of resilience was devided into psychological and social dimension. In psychological attributes, there are admittion of reality of situation, denial of negative emotion, desire to live, responsibility, confidence, courage, hope, pursuit of positive meaning, identification and pursuit of goal, self-esteem, reception, spontaneity, planning, positiveness, will power, flexibility and creativity. In social attributes, there are a sense of belonging, perception of social support and active social relations. (3) The Process of Resilience There are 4 resilience phases which were the process minimizing the possibility of the negative chain reactions under adversity, the process minimizing the negative emotion under adversity, the process gaining the desire to live and the process exposing the active social relations. 2. The Application Possibility of Resilience Concept to Nursing The resilience concept is the psychosocial capacity with which an individual manages adversity. As many nursing scientists have developed nursing theory based on this capacity and the identification of nursing has been established in this field, resilience is not the new conception in nursing. However, since resilience appears in the attributes related with the resilience process concretely, it would help a lot when nurses execute psychosocial nursing.

• KSII Transactions on Internet and Information Systems (TIIS)
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• 제11권10호
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• pp.5006-5022
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• 2017

Effect and robust detection of targets in infrared images has crucial meaning for many applications, such as infrared guidance, early warning, and video surveillance. However, it is not an easy task due to the special characteristics of the infrared images, in which the background clutters are severe and the targets are weak. The recent literature demonstrates that sparse representation can help handle the detection problem, however, the detection performance should be improved. To this end, in this text, a hybrid method based on local sparse representation and contrast is proposed, which can effectively and robustly detect the infrared targets. First, a residual image is calculated based on local sparse representation for the original image, in which the target can be effectively highlighted. Then, a local contrast based method is adopted to compute the target prediction image, in which the background clutters can be highly suppressed. Subsequently, the residual image and the target prediction image are combined together adaptively so as to accurately and robustly locate the targets. Based on a set of comprehensive experiments, our algorithm has demonstrated better performance than other existing alternatives.

• 한국실내디자인학회논문집
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• 제19권5호
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• pp.83-94
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• 2010

Conventionally, ornament has developed around linear thinking based on Euclidean geometry, and been explained as simple and lucid natural Euclidean geometrical phenomena. The modular arrangement with vertical, horizontal and diagonal grids has been an organizing principle of classical ornament, but in digital era ornament is found not to be explained only with the principle of traditional arrangement due to the seemingly irregular complex forms. In that sense, this study presents the concept of digital ornament and examined the backgrounds of ornament in digital age, that are complex system and non-Euclidean geometry. Accordingly, the present study takes an approach by dividing new formal types of ornament into algorithmic form, hybrid form and dynamic form to find out a principle of pattern organization. Lately, architects who actively use computer for their architectural designs take the algorithmic strategies in nature and create various and complex patterns by simple rules. The patterns are not the repetition of the same, but the production of singularities. In addition, hybrid form by morphing shows a topologically flexible evolutionary transformation, and is used to create in-between transitional shapes from the source to target. Finally, the patterns by the interaction between the system components which are corresponded to the embedded forces emerge from dynamic simulation of the natural environment. Rather than objects itself, focus is given to the process of generating forms, and the ornamental patterns as the revelation of such implicit order provide not just the formal beauty but also spatial pathways for lights and air, maximizing the effects of lights.

• 대한전기학회:학술대회논문집
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• 대한전기학회 2005년도 추계학술대회 논문집 전력기술부문
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• pp.162-164
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• 2005

This paper presents an hour-ahead System Marginal Price (SMP) forecasting framework based on a neural network. Recently, the deregulation in power industries has impacted on the power system operational problems. The bidding strategy of market participants in energy market is highly dependent on the short-term price levels. Therefore, short-term SMP forecasting is a very important issue to market participants to maximize their profits. and to market operator who may wish to operate the electricity market in a stable sense. The proposed hybrid neural network is composed of tow parts. First part of this scheme is pattern classification to input data using Kohonen Self-Organizing Map (SOM) and the second part is SMP forecasting using back-propagation neural network that has three layers. This paper compares the forecasting results using classified input data and unclassified input data. The proposed technique is trained, validated and tested with historical date of Korea Power Exchange (KPX) in 2002.

• The Plant Pathology Journal
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• 제28권1호
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• pp.75-80
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• 2012

$Potato$ $virus$ $X$ (PVX) contains $cis$-acting elements including stem-loop 1 (SL1) RNA at the 5' region; SL1 is conserved among all potexviruses. The SL1 at the positive-sense RNA, SL1(+), is required for PVX RNA replication, cell-to-cell movement, and translation. Previous research demonstrated that SL1(+) RNA also serves as the origin of assembly for encapsidation of PVX RNA. To identify the essential sequences and/or regions for capsid protein (CP) subunit recognition within SL1(+) RNA, we used electrophoretic mobility shift assays (EMSA), UV cross-linking, and yeast three-hybrid analyses. The EMSA and UV cross-linking analyses with PVX CP subunits and RNA transcripts corresponding to the SL1(+) RNA showed that the SL1(+) RNA formed complexes with CP subunits. We also conducted EMSA and yeast three-hybrid analyses with RNAs containing various mutations of SL1(+) RNA elements. These analyses indicated that SL1(+) RNA is required for the interaction with PVX CP and that the RNA sequences located at the loop C and tetra loop of the SL1(+) are crucial for CP binding. These results indicate that, in addition to being important for RNA accumulation, the SL1(+) RNA from the 5' region of the PVX genome is also required for specific binding of PVX CP.

• 한국자동차공학회논문집
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• 제23권4호
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• pp.420-427
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• 2015

This paper statistically reviewed for the USNCAP frontal crash test results carried out by NHTSA. Vehicle samples were selected on total 20 vehicles which were included on 15 vehicles for MPV&SUV and 5 Pickup. The results was summarized as followings. The performance for the driver was better than the passenger's in the average sense. There exist distinctions between the driver and the passenger on the USNCAP front test procedure, for example dummy size, seating position and airbag style. Therefore these differences originated in the statistical results. Main effect was Neck injury for crash performance on both dummies on the average value. Root cause of neck injury was different for each dummy, ie, the driver caused from Nte & Ntf, but the passenger did absolutely Nte mode. Reliability evaluated from the standard deviation was highly dependent upon chest injury on the driver and neck injury on the passenger. Restraint system was also summarized.