• Korean Journal of Social Welfare Studies
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• v.43 no.1
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• pp.117-142
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• 2012

This research attempts to explain the influence of educational level inequalities on self-rated health and depression of the elderly. Also, we are focusing whether there is a mediating effect of social support between educational level inequalities and self-rated health depression of the elderly. The data was collected from July, 30 to August, 15, 2009. 631 persons who live in Gangnam-Gu area over 60 years of age were recruited. Frequency, percentage, mean, standard deviation and multiple regression were employed using SPSS 12.0. The result of this study shows that educational level inequalities have a influence on the self-rated health and depression. It is also verified that social participation variable has a partial mediating effect between educational level inequalities and mental health(self-rated health and depression). This study carried out a positive linear relationship between educational level and health: the higher education, the better the health. And also, the results present the importance of developing adequate intervention programs for the elderly having low educational level to improve social participation and to enhance mental health(self-rated health and depression).

• Proceedings of the Korean Society of Broadcast Engineers Conference
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• 2008.11a
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• pp.127-130
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• 2008

본 논문에서는 아날로그 TV에서 사용되는 인터레이스 영상을 디지털 디바이스에서 보다 우수하게 출력하기 위해 새로운 디인터레이싱 알고리듬을 제안 한다. 기존의 에지 기반의 라인 평균 방법의 경우 제한된 방향의 화소단위 상관도를 이용하기 때문에 잡음과 계조도 변화에 취약하였다. 또한 공간적 방향 벡터를 사용한 DOI방법은 영상 내 수평 에지가 강한 영역을 보간하는데 우수하지만 좌우 넓은 검색 영역으로 인한 잡음에 취약한 단점이 있었다. ED4D는 에지기반 라인 평균 방법과 공간적 방향 벡터를 적절히 사용하여 규칙적 에지 특성을 갖는 영역에 대한 에지 방향의 정확도를 높였다. 하지만, 참조 방향 및 화소 보간의 판별 기준이 $3{\times}2$ 윈도우로 고정되어 있기 때문에 초기 방향성 판단 기준과 수평 방향 에지 검출에 있어 정밀도가 떨어지는 문제점을 안고 있다. 제안하는 방법은 기존에 사용하던 $3{\times}2$ 윈도우에 $5{\times}2$ 윈도우를 추가적으로 적용하여 초기 방향성 판단 기준을 더 섬세하게 하였으며, 변형된 공간적 방향 벡터를 사용하여 넓은 검색영역으로 인한 잡음의 간섭을 줄였다. 실험결과를 통하여 제안한 방법이 기존의 방법에 비해 주관적 화질뿐만 아니라 객관적인 성능도 우수함을 알 수 있다.

• Proceedings of the Acoustical Society of Korea Conference
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• spring
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• pp.67-70
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• 2000

최근 들어, 인터넷의 폭넓은 보급과 급속한 대중화에 따라 네트워크를 통하여 음성을 전송하거나 저장하려는 시도가 많이 이루어지고 있다. 본 논문에서는 네트워크를 통한 멀티미디어 전송에서 음성부호화 표준으로 널리 상용되는 ITU-T G.723.1 dual-rate speech coder의 효율적인 다채널 구현을 위한 고속 알고리듬을 제안한다. 고속 알고리듬은 부호화 과정에서 많은 계산량을 차지하는 적응 코드북 검색과 고정 코드북 검색 과정에 적용된다. 적응 코드북 검색 과정에서는 지연과 이득을 동시에 찾는 기존의 방법 대신, 지연과 이득을 순차적으로 검색함으로써 계산량을 개선하였다. 전송률에 따라 다른 알고리듬을 사용하는 고정 코드북 검색 과정에서는 다음과 같은 고속 알고리듬을 제안한다. MP-MLQ(Multi-Pulse Maximum Likely Quantization) 방법을 사용하는 높은 전송률(6.3 kbit/s)인 경우, 펄스를 등 간격으로 검색함으로써 계산량을 줄였다. ACELP(Algebraic CELP) 방법을 사용하는 낮은 전송률(5.3 kbit/s)인 경우는 기존의 nested-loop 검색방법 대신, 펄스를 쌍으로 나누어 순차적으로 찾는 depth-first tree 검색 방법을 적용하여 계산량을 감소시켰다. 제안된 고속 알고리듬에 대해 주관적 음질 평가 방법을 수행한 결과, 제안된 방법이 기존의 방법에 비해 음질의 저하가 없음을 확인하였다. 고정 소수점 DSP인 TMS320C6201을 사용하여 고속 알고리듬을 구현한 결과, 높은 전송률의 경우에는 10.29 MIPS, 낮은 전송률의 경우에는 8.70 MIPS의 연산량으로 구현 가능함을 확인하였다.

• Journal of Industrial Convergence
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• v.22 no.1
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• pp.75-84
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• 2024

This study aims to provide basic data for improved the level of subjective health awareness in the physical and mental aspects of prospective seniors by verifying the effect of self-esteem of pre-elderly on subjective health awareness and the mediating effect of interpersonal skills. For the analysis, data were collected through a survey of 270 prospective seniors aged 55 and over to 64 years old, who participated in the prospective elderly program operated by social welfare institutions in the metropolitan area, from February 16 to March 16, 2023, and SPSS WIN 25.0 and PROCESS MACRO were used. Frequency analysis, descriptive statistics analysis, and correlation analysis were conducted as analysis methods, and the mediating effect of interpersonal ability was verified through structural equation analysis, and the main analysis results are as follows. First, it was found that the self-esteem of the pre-elderly had a positive (+) effect on subjective health perception. Second, interpersonal ability showed a mediating effect in the relationship between self-esteem and subjective health perception of pre-elderly. Based on these results, it is significant in that it presents basic data for a successful and active retirement life in the future old age.

• Journal of the Korea Convergence Society
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• v.9 no.7
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• pp.125-133
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• 2018

The purpose of this study was to explore college students' subjective perception on physical education using Q-methodology. Thirty college students participated in this study. This study found four types of college students' perception for physical education. Type I is named 'the type of Emphasizing Expertise.' The subjects of type I emphasize the importance of practicing professional motor skills and basic physical education knowledge in physical education classes. Type II is named 'the type of Emphasizing Instructional Strategy.' The subjects of type II emphasize the importance of developing effective teaching methods for students to participate actively. Type III is named 'the type of Making Physical Education Mandatory.' The subjects of type III emphasize the needing to make physical education and to increase physical education classes in school. Type IV is named 'the type of Emphasizing Sports for All.' The subjects of type IV emphasize to improve students' fitness and social-skill and connect between physical education and sports for all. These findings will contribute to plan the effective school curriculum.

• The Journal of the Korea Contents Association
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• v.19 no.8
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• pp.630-640
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• 2019

This Study analysed subjective perceptions of culinary arts major students who participated in overseas employment program for providing vital information for future program development. The study adopted Q methodology as an analogizing tool and found four distinctive types. The first type is Link to Domestic Employment Type(Type 1, N=6), the second type is Finding New Enterprise needed Type(Type 2, N=8), the third one is Major Customized Language Education Demand Type(Type 3, N=3), and the last one is Major Divided Education Demand Type(Type 4, N=2). The results indicated that importance of establishing a bridge between overseas employment and domestic employment with providing specific information of domestic job recruiting process. It is also emphasized that informing extra available job placements for the students is vital. Lastly when the sub program were formed, it is necessary to divide students based on not only overseas employment destination but also their major.

• The Journal of the Korea Contents Association
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• v.20 no.9
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• pp.129-139
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• 2020

This study was conducted to analyze the subjective perception types of college students majoring in cooking by applying flip-learning teaching and learning methods to the subject of cooking practice to improve the educational efficiency of cooking-related classes. Also, in order to study subjective perception of small students, we tried to grasp the common structure in subjective attitude and perception using Q methodology, and the analysis resulted in four types. Type 1 (N=5): Problem solving ability effect, Type 2 (N=6): Self-directed learning effect, Type 3 (N=3): Mutual cooperation practice effect, Type 4 (N=6) ): Theory learning effect was analyzed for each unique feature type. Flip-learning is applied to cooking practice classes, which is a learner-centered education that leaves the traditional teaching method. Interest was found to have a very positive effect on learners' opinion sharing and learning outcomes. However, it was revealed that all students need to find additional solutions to problems such as the operation plan for flipped learning and the free ride evaluation method in group learning.

• Proceedings of the Korean Society of Broadcast Engineers Conference
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• 2009.11a
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• pp.205-207
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• 2009

디지털 카메라를 이용한 영상 취득은 일반적으로 한 픽셀에서 세 가지 색상(적색, 녹색, 청색)의 값을 얻는 것을 목표로 한다. 하지만, 비용의 문제로 한 픽셀에서 한 가지의 색상만을 얻어 나머지 두 색상을 복원하는 방식을 널리 사용한다. 이를 demosaicking이라 하는데, 이 과정에는 1)각 색상 영상 내의 상관관계와 2)세 가지 색상 사이의 상관관계가 동시에 이용된다. 본 논문에서는 이 두 가지 상관관계를 이용하여 각 채널의 고주파 성분과 밝기 성분의 고주파 성분을 반복적으로 향상시키는 방법을 제안하였다. 첫 번째 단계에서는 밝기 성분을 이용하여 각 채널의 고주파 성분을 강화하고, 두 번째 단계에서 관측값을 이용하여 밝기 성분의 고주파 성분을 복원한다. 제안된 방법이 기존 방법과 주관적인 방법과 객관적인 방법으로 비교하여 우수함을 보인다.

• Journal of The Korean Association of Information Education
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• v.22 no.2
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• pp.177-193
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• 2018

The purpose of this paper is to explore the types of subjectivity on edutainment features of software education implemented in elementary school. Q-method is used to seek individual learners' subjectivity type. Three types of subjectivity are found: implementation type, intellectual-fun type, and relationship type. Implementation type learners show positive attitude toward making their thinking into realization, intellectual-fun type learners show positive attitude toward solving problems that require intellectual activities, and relationship type learners show positive toward other persons' attention and consideration. These results imply software education will be more enhanced with these three types considered for implementing software education in elementary schools. This study is expected to contribute to further following research and practices.

• Journal of Broadcast Engineering
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• v.17 no.4
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• pp.670-675
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• 2012

If the region of interest (ROI) is set within the picture of image and video and the high quality is provided in ROI compared to Non ROI, then overall subjective picture quality can be increased. ROI extracted by the color camera only increases the calculation complexity and reduces the extraction accuracy. In this paper, we use depth camera to set the ROI and calculate the object distance from camera, then propose a method that the different picture quality is controlled by depending on the distance of an object. That is, we apply a high quantization step size to the far object, but relatively a low quantization step size to the close object, so better picture quality can be provided. Simulation results show that applying the differential quantization step size to the distance of objects by the proposed method can improve the subjective picture quality.