• Journal of Digital Convergence
• /
• v.12 no.5
• /
• pp.403-413
• /
• 2014

This study is to select educational films suitable for enhancing creativity and personality in order to develop educational contents aimed at pre-service early childhood teacher. First, three film critics based on sub-elements of ego-identity selected final 59 films. Next, three education experts classified the 59 films into small groups based on components each for creativity and personality. As a result, first, films classified according to pre-service early childhood teacher' sub-elements of ego-identity, educational components for creativity, and educational components for personality were 8 in job, 7 in religion, 6 in politics, 7 in philosophical life style, 8 in friendship, 8 in relationship, 7 in gender role, and 8 in leisure activity. Second, verifying suitability of film critics and education experts using Delphi method in order to select educational films to enhance pre-service early childhood teacher' creativity and personality based on films was effective in increasing validity of the results of this research.

• Proceedings of the Korea Technology Innovation Society Conference
• /
• 2004.11a
• /
• pp.596-607
• /
• 2004

연구개발활동에 관한 평가를 수행할 때, 가장 많이 사용되어 온 방법이 동료평가(peer review)방법이지만, 최근에는 동료평가가 가지는 문제점을 보완하기 위해 정량지표(bibliometric indicator)의 도입이 다각적으로 검토되고 있다. 여기서는 이를 위해 새로운 정량지표로서 첫째, 동료평가와 정량지표의 점수 배분비율로 각각 $70\%$와 $30\%$로 하고 둘째, 과거 5년 간 가장 우수한 논문 10편만을 대상으로 정량지표를 작성하며 셋째, 각 논문이 게재된 저널이 속한 분야 저널들의 impact factor 순위를 백분율로 적용하여 이에 따른 가중치를 적용하는 방식이 바람직하며 넷째, 논문에서의 저자 역할에 따라 점수를 차등화하고 공동저자의 논문 실적이 주저자의 논문실적에 의해 결정되도록 하는 방식을 제안하고 있다. 이와 같은 정량지표는 과거의 정량지표가 가지고 있었던 한계를 상당 부분 극복할 수 있을 뿐 아니라 동료평가를 보완하는 방법으로 사용될 수 있다.

• Journal of Industrial Convergence
• /
• v.20 no.10
• /
• pp.39-49
• /
• 2022

The purpose of this study was to systematic review about randomized controlled trials the characteristics and effect of non-pharmacological intervention on depressive symptom in elderly with mild cognitive impairment. We searched studies published from January 2011 to July 2021 in 3 databases. A total 1,455 studies were found and included 11 studies in final analysis. Methodological quality was assessment with the Cochrane's RoB(risk of bias) tool. Geriatric Depression Scale(GDS) was the most used as the assessment tool for identifying the depressive symptom. Intervention were yoga, psychosocial intervention, cognitive training, health education, multi-component intervention, game training, aerobic/pulmonary physiotherapy, art therapy, music reminiscence activity, memory specificity training, cognitive stimulation therapy and SWTW(sleep well, think well) program. Among the intervention programs, yoga, multi-component intervention and game training were effective in improving depressive symptom. This study provided a clinical evidence for planning and implementing intervention on depressive symptom in elderly with mild cognitive impairment.

• Journal of Digital Convergence
• /
• v.14 no.6
• /
• pp.425-430
• /
• 2016

The goal of this study is to explore the factors that influence on intention to use UHDTV Service. Research problems has been designed to Structural equation model by Technology Acceptance Model. The Perceived quality, Price sensitivity, Innovativeness are adopted as independent variables. And Perceived usefulness, Perceived ease of use are adopted as intervening variables. A result of analysis, Perceived quality and Price sensitivity influenced the Intention to use via Perceived usefulness and Perceived ease of use. But in case of Innovativeness, it did not influence the Perceived usefulness while it influenced the Perceived ease of use. Meanwhile, the influence of Perceived quality to Perceived usefulness had more impact than the other path between the other factors.

• Journal of Digital Convergence
• /
• v.9 no.4
• /
• pp.51-67
• /
• 2011

This research looks at the innovative product characteristics, environmental properties, and personal attitudes as antecedents of consumer's perceived usefulness and easiness of product usage. And the attitudes toward digital convergence products and its acceptability as consequences. The results indicate that relative advantage, expectation for better product, the social influence, mass communications, and attitudes toward the new technology, significantly influence the perceived usefulness. The current research revealed that perceived usefulness is more influential over perceived easiness on the formation of positive attitude toward the product. The users of digital convergence products put more weight on the availability of the product functions rather than easiness of use.

• Transactions of the Korean Society of Mechanical Engineers
• /
• v.13 no.3
• /
• pp.461-471
• /
• 1989

For the mixed-mode crack problems the direction of crack growth, the crack path and the rational representation of fatigue crack growth rates should be studied to predict fatigue life and safety of structures. In this study, a round specimen which produce nearly identical effects in all loading directions is proposed to make an easy measurement of initial direction of crack growth. The mode I and mode II stress intensity factors of the specimen were calculated using finite element method, in which the square root singular stresses at the crack tip are modeled by means of four rectangular quarter-point eight-noded elements surrounding the crack tip. Experimental results for high strength aluminum alloy showed that the direction of mixed-mode crack growth agree well with maximum principal stress criterion as well as minimum strain energy density criterion, but not with maximum shear stress criterion. From data of fatigue crack growth rates using crack geometry projected on the line perpendicular to the loading direction it is easily established that mixed-mode fatigue crack growth in 5083-H115 aluminum alloy goes predominantly with mode I crack growth behaviors.

• Journal of the Institute of Electronics Engineers of Korea SC
• /
• v.41 no.4
• /
• pp.55-62
• /
• 2004

In this paper, we have developed a portable acceleration measurement system to measure acceleration signals during walking and a gait analysis algorithm which can evaluate gait regularity and symmetry and estimate gait parameters automatically. Portable acceleration measurement system consists of a biaxial accelerometer, amplifiers, lowpass filter with cut-off frequency of 16Hz, one-chip microcontroller, EEPROM and RF(TX/RX) module. The algerian includes FFT analysis, filter processing and detection of main peaks. In order to develop the algorithm, eight hemiplegic patients for training set and the other eight hemiplegic patients for test set are participated in the experiment. Acceleration signals during 10m walking were measured at 60 samples/sec from a biaxial accelerometer mounted between L3 and L4 intervertebral area. The algorithm, detected foot contacts and classified right/left steps, and then calculated gait parameters based on these informations. Compared with video data and analysis by manual, algorithm showed good performance in detection of foot contacts and classification of right/left steps in test set perfectly. In the future, with improving the reliability and ability of the algerian so that calculate more gait Parameters accurately, this system and algerian could be used to evaluate improvement of walking ability in hemiplegic patients in clinical practice.

• Journal of the Korea Academia-Industrial cooperation Society
• /
• v.14 no.5
• /
• pp.2081-2085
• /
• 2013

The purpose of this study is to investigate the usability and user interface in different types of mobile phones. KLM(key-stroke-level model) model estimation and observation values were calculated to perform 11 functional factors in 4 ordinary mobile phones and 4 smart phones. In results, it was found that the usability of ordinary phone is superior to smart phone in basic and simple function likes phone call. On the contrary, the usability of smart phone is superior to memorizing and picturing function. Current results can be used to anticipate the future effort to improve user interface design especially in smart phone.

• Journal of IKEEE
• /
• v.24 no.4
• /
• pp.1188-1191
• /
• 2020

In this paper, automotive safety and convenience service is proposed based on bluetooth and smart watch. The proposed service performs accident detection, kidnapping detection, kid-left-alone-in-car detection, parking location recording, and smart key function. Conventional smartphone services often fails to precisely recognize accident and kidnapping situations since smartphone is located on the dashboard or in the bag. On the contrary, smartwatch recognizes accident and kidnapping situations more precisely since it is always worn on the wrist with hearbeat monitoring. The proposed service recognise various situations around drives and passengers using acceleration sensor, GPS sensor, heartbeat sensor and bluetooth link status. It also performs accident notice, sound recording, and other necessary actions. It also performs door opening, door closing, hazard light flickering, and other necessary actions using OBD-II connection to the vehicle.

• Proceedings of the Korean Society of Dyers and Finishers Conference
• /
• 2011.03a
• /
• pp.32-32
• /
• 2011

염료의 포토크로미즘은 빛을 받았을 때, 염료의 분자구조가 변환되어 흡수파장이 달라지고 결과적으로 원래 색과 다른 색상을 나타내는 현상을 말한다. 대부분의 Golden yellow 색상을 나타내는 아조계 반응성염료는 Trans-Cis 간의 이성질체 전환을 통해 포토크로미즘 현상을 나타내며, 가역적으로 복색되기는 하지만 상업적으로 많은 문제와 불편을 초래한다. 한편 pyrazolone계 아조염료는 azo form 보다는 hydrazone form으로 더 많이 존재하는 것으로 알려져 있으며, 이로인해 상대적으로 Trans-Cis 이성질화가 잘 일어나지 않아 포토크로미즘 현상이 잘 일어나지 않을 것으로 기대된다. 이 연구에서는 3종의 pyrazolone계 golden yellow 반응성 염료를 합성하고, 합성한 염료를 면직물에 염색하여 염색성 및 견뢰도를 평가하였다. 또한 시판되고 있는 아조계 golden yellow 반응성 염료 4종을 선정하여 역시 염색성과 견뢰도 특성을 알아보았다. 그리고 7가지 염료의 광변색 특성을 조사하기 위해 포토크로미즘 평가방법인 ISO 105-B05법 및 이전 연구에서 제안된 광변색 평가방법을 사용하였다. ISO 105-B05법은 표준청색염포가 grey scale 4등급이 되는 시간을 구한 다음 이 시간의 1/4시간동안 조사한 후 포토크로미즘을 평가하는 것이며, 후자의 경우는 4시간동안 광조사된 시험편을 측색하고 시간에 따른 복색되는 정도를 평가한다. 합성한 pyrazolone계 염료들은 394-408nm의 최대흡수파장은 나타내었다. 7종의 yellow 반응성 염료들은 모두 면직물에 우수한 염색성 및 build-up성을 나타내었으며, 대체적으로 양호한 견뢰도를 얻었다. 또한 광변색 특성 평가결과 모든 염료들은 ISO 평가방법에 대하여 non-photochromic 특성으로 나타났으나, 다른 광변색 평가 결과 일부 염료들에 있어서 photochromic 특성이 있는 것으로 나타나 평가방법에 따라 차이를 보였다.