• 디지털융복합연구
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• 제12권11호
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• pp.209-214
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• 2014

전반적인 전 세계 시장의 불황속에서도 세계최대 북미시장에서 국내 가전업체들이 TV 시장의 지배력을 강화하고 있는 이유는 강력한 제품 경쟁력과 브랜드 파워를 내세워 프리미엄 시장과 중저가 시장을 모두 차지하면서 수익성과 볼륨을 모두 잡았기 때문으로 분석된다. 이렇게 국내 TV 제조사들이 북미시장에서 선전하고 있음에도 불구하고 국내 TV 제조회사들은 지속적인 시장선점 및 TV 제품의 경쟁력을 유지하기 위한 제품개발, 마케팅 및 판매전략 등을 고민하고 있다. 본 연구에서는 이러한 지속적인 경쟁우위를 유지하기 위한 방안으로 국내 A사의 북미시장에서의 TV 판매 데이터를 이용하여 북미시장에서의 TV 판매예측모델을 개발하고자 한다. 이를 위하여 본 연구에서는 판매예측모델에서 많이 적용되고 있는 다중회귀모델과 인공신경망 기반의 예측모델을 개발하여 두 모델의 비교분석한다. 특히 본 연구에서는 TV 제품의 부가가치를 향상시키거나 가격경쟁력을 향상시키기 위해 TV의 주요 기능과 판매와의 연관성 분석도 수행한다.

• 한국신뢰성학회지:신뢰성응용연구
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• 제15권1호
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• pp.60-66
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• 2015

In this paper, The infrastructure case for reproduction or analysis of the mechanism on the fire or the electrics shock of the electrical appliances is proposed. The various electrical appliances(Washing machine, Ballast, Electric heaters, Electronic switches, Mobile phone chargers) used in the home can be tested on the high voltage and over current test through the implementation of the infrastructure. The electrical tests of fire and electric shock consists of the high voltage of maximum 5000 V and over current test of 3 steps(90 A, 60 A, 40 A) and noise test. The mechanism of the fire and the electric shock tests reproduced are analyzed through the monitoring system and the oscilloscope. The electronics manufacturers can prevent accidents through the tests of the electronics factor reproduced and the analysis of the infrastructure designed.

• 한국신뢰성학회:학술대회논문집
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• 한국신뢰성학회 2005년도 학술발표대회 논문집
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• pp.385-392
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• 2005

The restriction of the use of hazardous substances in electrical and electronic equipment legislation mandates the substitution of lead and other hazardous substances in electronics products by July 2006. Due to this legislative pressure, the electronics industry is moving to adoption of lead free solders. In this paper, we investigated a flux to restrict generating electrochemical migration in lead-free solder. The lead-free solders used in this study were Sn-0.7Cu-0.01P and Sn-3.0Ag-0.5Cu. To measure the resistance of electrochemical migration, the dew-cycle test and water drop test were adopted. As the result, now flux having high durable of electrochemical migration was developed.

• 한국의류학회지
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• 제21권1호
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• pp.67-81
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• 1997

The main purpose of this study was to compare the characteristics of male innovators and of male opinion leaders across product categories in terms of personality, attitudes, social participation, media usage patterns and demographic aspects. Six product categories such as clothing, cosmetics, small electronic appliances, medium-large electronic appliances, interior supplies and sports-leisure goods was used. A valid and reliable self-report scale was used to measure innovativeness and opinion leadership for 423 male adults living in social area Analyses showed that venturesomeness is the most common characteristics between innovators and opinion leaders across product categories. Innovators showed higher tendency of narcissism while opinion leadership showed higher cosmopolitainsm. Common charateristics of innovators and of opininion leaders of both clothing and cosmetics are cosmopolitanism, narcissism, exhibitionism, venturesomeness. The degrees of social participation and media usage patterns were different according to product categories for both innovators and opinion leaders. The implications of these findings for diffusion theory and merchandising were discussed.

• 한국전기전자재료학회:학술대회논문집
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• 한국전기전자재료학회 2006년도 하계학술대회 논문집 Vol.7
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• pp.206-207
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• 2006

This paper describes the dielectric analysis of several insulators for home appliances. The dielectric characteristics of ABS(acrylonitrile butadiene styrene) were tested in relative permittivity, dielectric loss($tan{\delta}$) and specific resistance and compared with those of the other 4 insulators of PE(polyethylene) series. As a result, the relative permittivity of only the ABS slightly decreased with temperature. In the case of the tan6, the ABS showed higher dielectric loss than the other insulators but more excellent thermal performance. In addition, its changing pattern in specific resistance was very similar to that in $tan{\delta}$.

• 자동차안전학회지
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• 제8권2호
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• pp.30-36
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• 2016

According to revolutionary developments in automobile technologies, various electronically controlled components of vehicles are rapidly increasing. A variety of advanced vehicles (hybrid vehicle, hydrogen fuel-cell vehicle, electric vehicle, etc.) using electrical energy source are increasing, too. The electromagnetic compatibility is getting more important for development of a vehicle because those advanced vehicles are equipped with more new electronic systems. In general, electromagnetic compatibility tests consist of an electromagnetic interference (EMI) test and an electromagnetic susceptibility (EMS) test. In this paper, in order to investigate the electromagnetic interference in the cabin of vehicle by various electric and electronic components of vehicles, a series of narrowband electromagnetic emission tests are conducted. For comparison, the several digital home appliances (smartphone under charging, laptop compuer and digital camera), which are used a lot in daily lives, are tested.

• 자원리싸이클링
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• 제22권4호
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• pp.12-21
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• 2013

E-waste(폐전기전자기기, WEEE)는 많은 종류의 금속을 함유한 유가물과 유해물의 복합혼합물로 자원의 유효이용과 환경부하저감을 위해 리싸이클링 처리가 필수로 되어 있다. 특히 최근 레어메탈의 공급제약문제 등으로 도시광산자원 중에서 E-waste의 비중이 높아지고 있다. 한편, E-waste의 리싸이클링산업에 있어서 E-waste의 경제적 가치의 파악은 매우 중요하다. 이와 같은 관점에서 본보에서는 E-waste를 대형가전, 소형가전, 휴대전화기 및 PCB(전자인쇄회로기판, 기판)로 분류해서 경제적 가치를 논하였다.

• 한국디자인학회:학술대회논문집
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• 한국디자인학회 2004년도 추계 학술발표대회 논문집
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• pp.10-11
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• 2004

• 한국정보통신학회:학술대회논문집
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• 한국정보통신학회 2015년도 추계학술대회
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• pp.228-231
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• 2015

최근 특정 계절과 시간대에 전력 소비가 편중되어 전력 공급이 불안정해지는 상황이 발생함에 따라 전력을 효율적으로 소비하기 위한 대안으로 스마트 그리드가 등장했다. 기존 전력망에 정보 통신 기술을 접목한 스마트 그리드는 핵심 기술로 수요반응을 포함하고 있으며 이 수요반응은 소비자가 전력시장에 자발적으로 참가하여 전력 사용량, 예상 요금 등 다양한 정보를 제공받아 효율적으로 전력 소비를 가능하게 한다. 본 논문에서는 스마트 그리드 환경에서 가전기기의 효율적인 전력 제어를 위한 SEP 2.0 기반의 자동 수요반응 시스템을 설계하였다.

• Journal of Electrical Engineering and Technology
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• 제7권3호
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• pp.304-311
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• 2012

So far, the importance for an accurate load model has been constantly raised and its necessity would be further more emphasized. Currently used load model for analysis of power system in Korea was developed 10 years ago, which is aggregated by applying the statistically estimated load compositions to load models based on individual appliances. As modern appliances have diversified and rapidly changed, the existing load model is no longer compatible with current loads in the Korean power system. Therefore, a measurement based load model is more suitable for modern power system analysis because it can accurately include the load characteristics by directly measuring target load. This paper proposes a ZIP model employing a Kalman-filter as the estimation algorithm for the model parameters. The Kamlan-filter based parameter identification offers an advantage of fast parameter determination by removing iterative calculation. To verify the proposed load model, the four-second-interval real data from the Korea Energy Management System (K-EMS) is used.