• Korea journal of population studies
• /
• v.25 no.2
• /
• pp.271-291
• /
• 2002

According to a system-wide analysis utilizing the raw data of Korean urban households survey, the expenditure elasticity estimate of alcoholic demand is around 0.71, which implies the demand for alcoholic consumption is relatively necessary The own price elasticity estimates are pretty elastic between -1.79 and 2.10. The trend of price elasticity estimates shows to be more elastic recently from the past.

• Knowledge Management Research
• /
• v.21 no.3
• /
• pp.89-103
• /
• 2020

When people feel powerless (with losing control), they show compensatory behaviors to get out of this state. The actions to compensate for powerlessness have been studied in the contexts of products or brands, but this study focuses on compensatory behaviors when using social media. Social media, which can express consumers' selves freely, has become a platform for self-expansion. It has been confirmed that the possibility of relieving psychological powerlessness through self-expression on social media exists. Therefore, we examined how people who felt powerless showed compensatory behaviors on social media. According to the analysis, consumer's powerlessness does not directly affect narcissistic self-expression on social media. However, it is derived as being fully mediated by the feeling of anxiety. The more anxious consumers feel, the more narcissistic they express themselves by posting photos of themselves with luxury brand objects that can show social power or authority. In other words, when consumers experience social powerlessness coupled with anxiety, they are likely to show compensatory consumption behaviors such as narcissistic self-expression in order to make their images cool and luxurious and draw others' attention on social media. We confirm that the compensatory consumption due to consumers' powerlessness, which leads to having anxiety, can appear in ways of presenting narcissistic selves on social media.

• Korean Journal of Culture and Social Issue
• /
• v.27 no.2
• /
• pp.191-216
• /
• 2021

How an individual construes one's future influences everyday decisions. For example, savings and impulsive purchasing, which is highly familiar with our life, are related to future time perception. Drawing on the idea of future self-continuity, the perceived connectedness between the current and future self, this study demonstrated whether media images with various age ranges influence a sense of connectedness with one's future self as well as impatience. Furthermore, the study measured whether these relationships were moderated by the positivity of older adults and an individual's dispositional optimism in general. Results showed that watching various images of people with a wide range of age (from the 20s to 90s) in social media increased young adults' (the 20s) self-continuity and decreased their intention of impatient consumption. This effect was also moderated by the degree to which the participants perceive aging positively.

• Proceedings of the KIEE Conference
• /
• 2003.07a
• /
• pp.287-289
• /
• 2003

합천수력발전소는 1989년 준공이후 최근까지는 발전정지시 전력계통으로부터 전력을 수전할 경우 수전역률이 90%이상되어 문제가 없었으나, 2001년 6월경 전력계통이 논공154kV변전소에서 고령345kV변전소로 변경된 이후, 계통전압이 평균 $2.5{\sim}3.0kV$상승함으로써 역률이 약70%로 저하하였다. 이런 전압상승은 전력계통의 무효전력조정에 의한 것으로, 수전시 합천수력발전소의 평균소비전력은 주변압기 용량의 약0.55%로 전력계통에서 발전소를 바라보면 주변압기가 무부하로 운전되는 것처럼 보이게 되어 발전소내에서 소비되는 무부하손이 증가하여 역률이 저하한 것으로 검토되었다. 이런 무효전력소비는 주변압기에만 국한되어 있으므로 역률개선용 콘덴서를 주변압기 1차측에 설치하여 저하된 역률을 보상할 수 있었다.

• Proceedings of the Korean Society of Broadcast Engineers Conference
• /
• 2011.07a
• /
• pp.14-15
• /
• 2011

본 논문은 TFT-LCD 디스플레이를 위한 저전력 화질 개선 기법을 제안한다. 제안하는 기법에서는 TFT-LCD 디스플레이의 어두워진 백라이트를 보상하기 위한 기법을 히스토그램 균등화에 기반하여 유도하며, 밝기 보상으로 인하여 손실되는 정보량이 최소가 되게 하는 변환 함수를 구한다. 컴퓨터 모의실험을 통해 제안하는 알고리듬이 전력 소비를 줄이는 동시에 영상의 화질을 개선하는 것을 확인한다.

• Journal of the Korean Home Economics Association
• /
• v.46 no.10
• /
• pp.119-132
• /
• 2008

The aim of this study was to analyse the consumer dissatisfaction, complaint and repurchase intentions in foodservices with a particular focus on college students. For this investigation we analysed the responses of 520 college students interviewed from Daegu Gyeongbuk Province. The SPSS/WIN version 12.0 and AMOS version 6.0 were used to analyse collected data. The results were as follows : 1) Factor analysis identified 5 different consumer dissatisfaction factors: facilities, waiter/waitresses behavior, food quality, service, store operating. The level of food quality dissatisfaction was most high. Consumer complaints came in three forms: public, personally and no action. The level of personal complaint was most high. 2) AMOS analysis found that public complaints had the most influence on repurchase intentions. 3) Dissatisfaction was highest with fast food restaurants, which also received the most public complaints. 4) Dissatisfaction, complaints, and compensation strongly influenced eating-out and spending motivation of college students.

• Convergence Security Journal
• /
• v.16 no.1
• /
• pp.23-32
• /
• 2016

The more a society becomes complicated and diversified along with the economic development, the more diverse l earning types the educational activities had beyond the existing educational approaches to cope with the complicated and diversified society. In particular, field studies and opportunity to use the dangerous educational appliances have been increasing in order to cope with the desires of education consumers requiring diversity and the individuality of students has been strengthened. In accordance with the trends above, the school accidents have been gradually increasing in recent days. Thus, this paper aims to propose the suggestions to teachers in real education fields by investigating the problems in compensation system of School Safety and Insurance Association against which the victim s of any school safety accidents firstly claim for the damages, the problems in the present system of the Association and how to improve the system in terms of the payment scope of the Association.

• Proceedings of the KIPE Conference
• /
• 2018.11a
• /
• pp.153-154
• /
• 2018

본 논문은 인버터의 출력단과 계통사이에 비선형부하가 연결되어 있는 상황에서 계통 전류의 THD를 개선하기 위해 반복제어기를 적용한다. 반복제어기는 주기적인 오차를 모델링하고 미리 보상하여 정상상태시 오차를 줄이는 목적으로 설계된 제어기이기에 계통전류 THD 개선에 효과적이다. 본 논문은 인버터의 공급전력이 부하의 소비전력보다 큰 경우 또는 부하의 소비전력보다 작은 경우에도 계통의 전류 THD는 개선되도록 하는 알고리즘을 제안한다. 시뮬레이션의 결과를 통해 계통 전류의 THD 개선을 확인한다.

• Proceedings of the Korean Institute of IIIuminating and Electrical Installation Engineers Conference
• /
• 1991.10a
• /
• pp.69-74
• /
• 1991

본 논문은 슬라이딩 모드 제어 기법을 이용한 직류 전동기의 디지탈 속도 제어기에 관한 연구이다. 또한 연속 시스템에 적용하던 슬라이딩 모드 제어기법을 이산 시스템에 사용할 수 있도록 해석하고, 실험하였다. 슬라이딩 모드 제어기에서 발생되는 채터링(CHATTERING) 현상을 감소시키기 위해 스위칭 주파수를 높이고, 샘플링 주기를 최대한 줄였으며 제어기 출력에 필터를 도입하였다. 또한, 스위칭 지연과 외란에 대한 보상도 고려하였으며 슬라이딩 모드 제어기를 마이크로 프로세서로 구성하였다. 전력 소비를 줄이기 위해 LIMITED UNIPOLAR 모드에서 직류 전동기를 구동하였다.

• Proceedings of the Optical Society of Korea Conference
• /
• 2000.02a
• /
• pp.208-209
• /
• 2000

기존의 CRT(cathode-ray tube)를 사용한 TV, 모니터와 같은 디스플레이는 부피가 커서 공간을 많이 차지하고 휴대품으로는 거의 사용이 불가능하였다. 그러나, 평판 디스플레이의 하나인 LCD(liquid crystal display)는 소비 전력이 작고 부피가 작아서 게임기, Note-book PC와 같은 휴대용으로는 물론 PC용 모니터와 같은 사무용 디스플레이, TV와 같은 가정용 디스플레이를 대체해 나가고 있다. (중략)