• 한국치위생학회지
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• 제16권2호
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• pp.241-248
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• 2016

Objectives: The purpose of the study is to evaluate the dental website usability in Korea. The dental website included dental university hospital, network dental hospital and dental office. Methods: The study was carried out by three age groups including twenties, thirties, and forties. Each group consisted of ten customers and evaluated twelve websites of dental hospitals. Each was assigned to four hospitals and three tasks including easiness of online reservation, preventive information, and treatment information. They filled out the self-administered questionnaire. The questionnaire included the easiness of on-line reservation, satisfaction on the quality and quantity of preventive informations, satisfaction on the quality and quantity of treatment informations, predictiveness on the sub-menu, usefulness of site map, information on the main page of web site, usefulness of decision on visit to dentistry, and revisit intention. Results: The easiness of on-line reservation was the highest in the private dental office, and university dental hospital and network dental hospitals followed in conducting task(1). The anticipated value and measurement on the usefulness of web site were the lowest in network dental hospitals and the time interval between two values was 57 seconds. This discrepancy showed the largest difference. The satisfaction on treatment information in task(3) was higher than that of the satisfaction on preventive information in task (2). The revisit intention was the highest in dental university hospitals. Conclusions: This study showed the comparison in usefulness of web site of university dental hospitals, network dental hospitals and private dental office. The web site focused on the treatment information rather than preventive information. This study suggested that the most important function of dental web site would be the preventive information that was mainly operated by the role of dental hygienists rather than treatment information in the future.

• 인지과학
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• 제13권4호
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• pp.54-54
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• 2002

본 연구는 남녀 성별 성격 특성단어에 대한 정서판단시에 개입되는 자동적 평가효과를 점화과제를 통해서 검증하였다. 점화조건과 목표조건에 따라 성격 특성단어들을 네 가지로 조합하였으며 두 가지 유형의 SOA에서 점화단어와 목표단어에 대한 일치성 효과와 긍정성 우위 효과를 살펴보았다. 실험1의 짧은 SOA(150­250ms)에서는 긍정-긍정 단어쌍이 부정-부정 단어쌍보다 반응시간이 빠르게 나타났다. 실험 2의 긴 SOA(500­1000ms)에서는 단어쌍 조건간에 차이가 나타나지 않았다. 즉, 짧은 SOA에서는 긍정성 우위 효과가 나타났지만, SOA가 길어짐에 따라서 일치성 효과나 긍정성 우위 효과는 모두 유의미하지 않았다. 이러한 결과는 사회인지적 대상에 대한 자동평가가 일반 인지체계에서 일관되게 나타나는 자동적 의미처리과정과는 다를 수 있음을 시사한 것으로 볼 수 있다. 편견이나 고정관념처럼 정서가 내포된 사회적 정보는 정서의 긍정성이나 부정성에 따라서 다른 처리가 일어날 수 있다고 본다.

• 인지과학
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• 제13권4호
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• pp.55-65
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• 2002

본 연구는 남녀 성별 성격 특성단어에 대한 정서판단시에 개입되는 자동적 평가효과를 점화과제를 통해서 검증하였다. 점화조건과 목표조건에 따라 성격 특성단어들을 네 가지로 조합하였으며 두 가지 유형의 SOA에서 점화단어와 목표단어에 대한 일치성 효과와 긍정성 우위 효과를 살펴보았다. 실험1의 짧은 SOA(150­250ms)에서는 긍정-긍정 단어쌍이 부정-부정 단어쌍보다 반응시간이 빠르게 나타났다. 실험 2의 긴 SOA(500­1000ms)에서는 단어쌍 조건간에 차이가 나타나지 않았다. 즉, 짧은 SOA에서는 긍정성 우위 효과가 나타났지만, SOA가 길어짐에 따라서 일치성 효과나 긍정성 우위 효과는 모두 유의미하지 않았다. 이러한 결과는 사회인지적 대상에 대한 자동평가가 일반 인지체계에서 일관되게 나타나는 자동적 의미처리과정과는 다를 수 있음을 시사한 것으로 볼 수 있다. 편견이나 고정관념처럼 정서가가 내포된 사회적 정보는 정서의 긍정성이나 부정성에 따라서 다른 처리가 일어날 수 있다고 본다.

• Annals of Clinical Neurophysiology
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• 제8권2호
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• pp.163-170
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• 2006

Backgrounds: MEG can measure the task-specific neurophysiologic activity with good spatial and time resolution. Language lateralization using noninvasive method has been a subject of interest in resective brain surgery. We purposed to develop a paradigm for language lateralization using MEG and validate its feasibility. Methods: Magnetic fields were obtained in 12 neurosurgical candidates and one volunteer for language tasks, with a 306 channel whole head MEG. Language tasks were word listening, reading and picture naming. We tested two word listening paradigms: semantic decision of meaning of abstract nouns, and recognition of repeated words. The subjects were instructed to silently name or read, and respond with pushing button or not. We decided language dominance according to the number of acceptable equivalent current dipoles (ECD) modeled by sequential single dipole, and the mean magnetic field strength by root mean square value, in each hemisphere. We collected clinical data including Wada test. Results: Magnetic fields evoked by word listening were generally distributed in bilateral temporoparietal areas with variable hemispheric dominance. Language tasks using visual stimuli frequently evoked magnetic field in posterior midline area, which made laterality decision difficult. Response during task resulted in more artifacts and different results depending on responding hand. Laterality decision with mean magnetic field strength was more concordant with Wada than the method with ECD number of each hemisphere. Conclusions: Word listening task without hand response is the most feasible paradigm for language lateralization using MEG. Mean magnetic field strength in each hemisphere is a proper index for hemispheric dominance.

• 한국정보통신학회논문지
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• 제25권1호
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• pp.27-35
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• 2021

본 논문에서는 인공 신경망이 과거 학습 데이터의 정보를 망각하는 치명적 망각(Catastrophic Forgetting) 현상을 개선하기 위해, 학습할 데이터에 따라서 가변적으로 정규화 강도를 조절하는 방법을 제안한다. 이를 위하여 과거에 학습된 데이터와 현재 학습할 데이터들의 관계를 측정하는 방법을 사용하였다. 성능 평가를 위해 MNIST, EMNIST 데이터를 사용하였다. 3가지 시나리오에서 실험한 결과, 같은 도메인을 갖는 데이터의 경우, 이전 태스크의 정확도가 0.1~3%, 다른 도메인을 갖는 데이터의 경우 이전 태스크(Task)의 정확도가 10~13% 향상 시킬 수 있었다. 이는 본 논문의 방법으로, 도메인이 다른 경우, 망각률이 줄어든 것을 의미한다. 다양한 도메인을 가진 데이터를 연속적으로 학습할 경우, 이전 태스크들의 정확도가 모두 50% 이상을 달성하였고 평균 정확도가 약 7% 향상되었다.

• Safety and Health at Work
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• 제13권3호
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• pp.326-335
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• 2022

Background: One of the important actions for enhancing human reliability in any industry is assessing human error probability (HEP). The HEART technique is a robust tool for calculating HEP in various industries. The traditional HEART has some weaknesses due to expert judgment. For these reasons, a hybrid model is presented in this study to integrate HEART with Best-Worst Method. Materials Method: In this study, the blasting process in an iron ore mine was investigated as a case study. The proposed HEART-BWM was used to increase the sensitivity of APOA calculation. Then the HEP was calculated using conventional HEART formula. A consistency ratio was calculated using BWM. Finally, for verification of the HEART-BWM, HEP calculation was done by traditional HEART and HEART-BWM. Results: In the view of determined HEPs, the results showed that the mean of HEP in the blasting of the iron ore process was 2.57E-01. Checking the full blast of all the holes after the blasting sub-task was the most dangerous task due to the highest HEP value, and it was found 9.646E-01. On the other side, obtaining a permit to receive and transport materials was the most reliable task, and the HEP was 8.54E-04. Conclusion: The results showed a good consistency for the proposed technique. Comparing the two techniques confirmed that the BWM makes the traditional HEART faster and more reliable by performing the basic comparisons.

• 동의생리병리학회지
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• 제33권6호
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• pp.303-310
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• 2019

In order to search for the causes of having difficulty with the scientification task of the Korean medicine, the definition and conception of science were reviewed first and then formalization of reasoning scheme and a practical method of scientification were proposed. Science in its definition is meant by foundation of method and system for production of scientific knowledge not by knowledge of science itself. The formation of science is composed of complex processes including not only scientific knowledge but also politicosocial output containing activity of scientist society, spreading of social value and intercommunication. The production of scientific knowledge of Korean medicine is begun from logicality of the differential diagnosis and treatment theory through abductive verification of analogical inference by yinyang and 5 phase theory. For the commensurability between the various heterogenic theories within Korean medicine, the scientific activity of collecting, compiling, analyzing, distributing, and discussing the significant knowledge gained through abductive verification in the experiment and clinical process should be formed broadly. Based on these knowledge database, organization of scientist society with Korean medicine, life science, medical engineering, social expansion and generalization of pattern conception, and then social propagation and contribution for national health should be driven forward.

• 한국산학기술학회논문지
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• 제10권6호
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• pp.1281-1286
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• 2009

건설공사의 기성관리체계의 효율적인 운영을 위해, 정부는 공정과 내역의 통합관리를 위한 EVMS를 운영하고 있다. 그러나 현재 공사진도의 평가기준인 공정과 내역이 이원화로 운영되고 있어 건설공사 실무자들에게 부가적인 업무를 가중시켜 왔다. 본 연구는 공정과 내역이 통합 운영될 수 있는 일원화 방안으로 작업과업의 개념을 도입하여 공정과 내역을 공유하기 위한 정보채널로 사용하였다. 또한, 이 작업과업을 활용한 공정 내역 통합관리시스템의 모형제시 및 활용성 검증을 통하여 EVMS 운영 시스템 프로토타입을 개발하여 그 효율성을 제시하였다.

• 간호행정학회지
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• 제4권1호
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• pp.19-31
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• 1998

The purpose of this study was to identify whether ethical values of nursing students are deontological or utilitarinian. The subjects of this study were consisted of 163 nursing students. The data was collected from September 3 to 30, 1997. Sub-scale of Nursing Ethical Values(Lee, 1990) were used to measure human life area, nurse-patient relationship area, nurse-nursing task relationship area, nurse-colleague relationship area. Data were analyzed by SPSS for Windows program. The results of this study were summarized as follows: 1. The students took the position of utilitarian slightly in human life area. 2. The students took deontological position slightly in nurse-patient relationships area. 3. The students took deontological position slightly in nurse-nursing task relationships area. 4. The students took deontological position greatly in nurse-colleague relationships area. 5. There were significant relationship between nurse-colleague relationship area and both human life area and nurse-patient relationship area(p< .01). 6. The ethical values of human life area related to religion(p< .01) and attitude of nursing(p< .05). The ethical values of nurse-colleague relationships area related to attitude of nursing(p< .01).

• 대한인간공학회지
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• 제16권2호
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• pp.29-38
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• 1997

The research on the factors which effect on legibility is mainly utilized as the basic data of selecting the standard guideline of VDT screen. But the research on Korean is scarcer than that of English. Furthermore, it is unreasonable to apply the results of the foreign language to Korean, beause of the difference between the typography of English and that of Korean. Therefore, more systematic and ergonomic research of the Korean typography on VDT screen is needed. In this paper, an experimental study on search speed and error rate is designed and performed according to different Korean letter size and font on search task with VDT. The experimental screen based on popular Ming and Gothic style is made up of total 12 artificial screens, each 6 different font size. As the criteria of the performance, searching speed(s.s.) and error rate (e) are selected, and CFF value is measured to evaluate user's visual fatigue. The results of experiment in font show that the Korean Gothic style is superior to the Korean Ming style in user's visual performance. The letter size that gives user the optimal performance ranges from the visual angle 39.8' to 55.5' in Ming style, from the visual angle 39.8' to 52.6' in Gothic systle. In visual fatigue experiment, the better performance of letter size is, the less tired user feels. And the smaller letter size is, the more tired user feels. There is no relationship between font and user's visual fatigue.