• 대한전자공학회:학술대회논문집
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• 대한전자공학회 2006년도 하계종합학술대회
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• pp.329-330
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• 2006

This paper presents a recovery technique for images with block-based corruption by transmission losses. Conventional methods that do not consider edge directions can cause blocked blurring artifacts. In this paper, we present a block recovery scheme using Haar wavelet features. The adaptive selection of neighboring blocks is performed based on the energy ratio f wavelet subbands. The lost blocks are recovered by linear interpolation in the spatial domain using selected block pairs. The proposed directional recovery method is effective for the strong edge because it exploits the varying neighboring blocks adaptively according to the edges and the directional information in the image. The proposed method outperforms the previous methods that used only a predefined set of neighboring blocks.

• 대한전기학회:학술대회논문집
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• 대한전기학회 1999년도 하계학술대회 논문집 A
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• pp.330-332
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• 1999

At the present, development of microelectronics technology caused an increase in using of induction motor for variable speed motor drive system instead of do motor. This paper is described the design of induction motor fed by inverter and analyzed 1.5kW motor performance using by finite element method (FEM).

• 자원환경지질
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• 제7권1호
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• pp.23-35
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• 1974

Dalsung Mine, located in Kyungsang puk-do, Korea, is well known as one of the typical breccia pipe filling hydrothermal W-Cu deposit. By homogenization temperature with fluid inclusions in quartz crystals (330 samples were dealt with) by heating stage microscope, two temperature ranges were figured out, one is $154^{\circ}{\sim}267^{\circ}C$ (average $210^{\circ}C$), and the other is $283^{\circ}{\sim}335^{\circ}C$ (average $309^{\circ}C$). Regarding to mineral paragenesis, mineralization of the deposit were thought that former, mesothermal stage, W-Cu mineralization processed through out the ore body and later mineralization were limitted under -4level as katathermal solution with Cu minerals.

• 한국조명전기설비학회:학술대회논문집
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• 한국조명전기설비학회 2006년도 춘계학술대회 논문집
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• pp.330-333
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• 2006

산업현장에서 많이 사용되고 있는 전력기기에 결함이 발생하면 치명적인 사고로 진전되어 큰 경제적, 인적 손실을 가져온다. 본 논문은 GIS에 사용되는 절연가스인 $SF_6$의 압력 변화에 따른 부분방전을 모의하고, 발생되는 부분방전 신호를 절연 진단 방법 중 하나인 UHF법을 이용하여 부분방전 시 방사되는 방사전자파의 스펙트럼을 분석하고, 접지로 흐르는 방전 전류를 측정하여 방전진전 과정을 관측하였다. 본 연구는 GIS 및 $SF_6$ 가스를 절연물로 사용하는 전력설비에서 내부압력 변화 시 금속이 물질에 의해 발생되는 절연파괴 사고의 예방진단에 유용한 자료가 되리라 판단된다.

• 한국수학교육학회지시리즈D:수학교육연구
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• 제13권4호
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• pp.309-330
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• 2009

The article aims to present findings of a study which has examined the ability of elementary school mathematics teachers and of teacher-trainees in other disciplines to solve irregular challenging problems of sequences in general rather than numerical sequences only. The findings show that mathematics teachers succeed to cope with unusual assignments when the requirements of the problems presented to them are analogous to irregular problems. However, when the problems require a change in the thinking procedure in the direction of creative thinking, there is a considerable decrease in performance. Another finding shows that, although teacher-trainees succeed less in solving the presented problems, they give incorrect solutions which do indicate creative thinking. An inevitable conclusion based on the research findings is that teacher training institutions should enhance and reinforce multi-directional. branching out and creative thinking competences.

• 한국방송∙미디어공학회:학술대회논문집
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• 한국방송∙미디어공학회 2021년도 하계학술대회
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• pp.327-330
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• 2021

본 논문은 RGB 영상 데이터셋의 일부만을 지도학습하여(Sparsely-supervised learning) Annotation 되지 않은 영상에 대해 손-객체의 3D 포즈를 복원하기 위한 방법을 제안한다. 기존의 연구에서는 손-객체의 포즈에 해당하는 6DoF 만을 학습 데이터로 활용한다. 이와 달리, 본 논문에서는 정확도 향상을 위해 복원된 결과를 동일한 입력 영상 내에서 비교 가능하도록 3D 모델로 복원한 결과를 입력 영상의 마스크로 만들어 학습에 반영하였다. 구체적으로 추정된 포즈로 만들어낸 마스크를 입력 영상에 적용한 결과와 Ground-truth 포즈를 적용한 영상을 학습 시에 손실 함수에 반영하였다. 비교 실험을 통해 제안된 방법이 해당 방법을 적용하지 않은 경우 보다 3D 매쉬 오차가 적었음을 확인할 수 있었다.

• Asia pacific journal of information systems
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• 제31권3호
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• pp.392-414
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• 2021

Social networking services (SNS) is an indispensable method in order to obtain information of the Internet participants. The study identified three variables of social media communication, sharing culture, and online trust in terms of social capital theory (SCT) and reviewed intention& behavior variables in terms of theory of planned behavior (TPB). The data were collected from 330 samples of SNS user, and were involved, and the research model uses AMOS to make confirmatory factor analysis. The findings confirmed our hypothesis that social media communication, sharing culture, and online trust affect individuals' behaviors to sharing information. This study emphasizes that not only social media communication but also sharing culture to SNS can stimulate information sharing. while previous research has predominately focused on personal cognition or social network, the study examines the integrated influence of communication, culture and trust on information sharing in SNS. In sum, by explicating the unique role of social capital, this paper aims at contributing to the continued development and success of SNS in general.

• 한국병원경영학회지
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• 제24권4호
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• pp.13-32
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• 2019

Purposes: This research is an empirical research to analyze the effect of self-leadership on the job satisfaction and organizational citizenship behavior and the mediating effect of psychological capital. Methods: This research investigates the effect of self-leadership and psychological capital on job satisfaction and organizational citizenship behavior of public health workers. The analysis was carried out to 4 local medical staffs in Chungcheongnam-do province, which distributed 330 copies and recovered 313 copies (94.8% recovery) and analyzed 304 copies (effective response rate 92.1%). Findings: First, causality was found in self-leadership and psychological capital. Second, it was found to have a significant effect on psychological capital and job satisfaction. Third, psychological capital was found to have a significant effect on organizational citizenship behavior. Fourth, psychological capital has a positive effect on both Self-leadership's behavior-oriented strategy, natural reward strategy, and strategic thinking pattern strategy. In the job satisfaction relationship, there was a partial mediating effect. Fifth, psychological capital has a positive effect on both self-leadership and organizational citizenship behavioral behavior-oriented strategy, natural reward strategy, and strategic thinking pattern strategy. The organizational citizenship behavioral relationship was found to have a partial mediating effect. Practical Implications: Taken together, the results indicate that the members of the four public health care organizations run by Chungcheongnam-do have a high weight on the natural reward strategy of achieving job satisfaction through the pleasures of doing their favorite activities or jobs.

• 한국약용작물학회지
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• 제20권5호
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• pp.320-330
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• 2012

This study was conducted to investigate the changes of chlorophyll contents, chlorophyll fluorescence, photosynthetic parameters, and leaf growth of Synurus deltoides under different shading treatments. S. deltoides was grown under non-treated (full sunlight) and three different shading conditions (Shaded 88~93%, 65~75%, and 45%~55%). Light compensation point ($L_{comp}$), dark respiration ($D_{resp}$), maximum photosynthesis rate ($Pn_{max}$), photo respiration rate ($P_{resp}$), carboxylation efficiency ($\Phi_{carb}$), and photochemical efficiency were decreased with increasing shading level; However, $CO_2$ compensation point ($CO_{2\;comp}$), total chlorophyll content, and specific leaf area (SLA) were shown the opposite trend. S. deltoides under 88~93% treatment showed the lowest photosynthetic activity such as maximum photosynthetic rate ($Pn_{max}$), photochemical efficiency, and $CO_2$ compensation point ($CO_{2\;comp}$). Therefore, photosynthetic activity will be sharply decreased with a long period of 8~12% of full sunlight. With the shading level decreased, carotenoid content and non-photochemical fluorescence quenching (NPQ) increased to prevent excessive light damage. This result suggested that growth and physiology of S. deltoides adapted to high light intensity through regulating its internal mechanism.

• 한국식생활문화학회지
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• 제5권3호
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• pp.317-330
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• 1990

The purpose of this study is (1) to develop native foods in the future continuosly, and (2) to provide basic information allowing college student's to correctly understand traditional culture, by investigating those college students' preference and understanding of the native foods in Cheju-do. To accomplish these purposes, the survey was carried out by use of questionaires for 344 residing in Cheju-do from 20th to 29th May, 1989. The statistical analysis including frequency, percentage, mean and standard deviation was performed by use of SAS program, while the significant difference between groups was examined by $x^2-test$. The results of this study are summarized as follows : 1. It was showed that college man had higher understanding and preference of those native foods than college women. 2. The result relating to age indicated that the more the age, higher understanding and preference. 3. The result by residing areas showed that the college students in the rural area showed higher understanding and preference than students in the urban area. 4. Based on the educational background of those subjects' mothers, it was shown that those college students of mothers having lower educational background had higher understanding and preference of native foods. 5. Those college students having good understanding of native foods accounted for 63.4 percent, while students requiring the continued development of those native foods for 91.0 percent. As a consequence, it is apparent that most subjects tended to show the positive responses to those native foods.