• 제목/요약/키워드: Information Appliances

검색결과 474건 처리시간 0.026초

디지털홈 환경에서의 보안 프레임워크 연구 (A Study on Security Framework in Digital Home Environments)

  • 김도우;한종욱;주홍일;이윤경
    • 한국정보통신학회:학술대회논문집
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    • 한국해양정보통신학회 2004년도 춘계종합학술대회
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    • pp.724-727
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    • 2004
  • 네트워크 기술의 발전과 가전기기의 디지털화로 인하여 컴퓨터를 포함하는 댁내의 정보기기들은 물론 오디오/비디오, 냉장고, DTV 둥을 하나의 네트워크로 연결함으로써 사용자가 집안 어디에 있든 모든 정보가전기기들을 제어할 수 있다. 이러한 홈 네트워크 환경은 원격제어 및 홈 서비스 제공을 위하여 전화선을 포함한 다양한 유무선 네트워크에 연결될 수 있다. 이로 인하여 외부 네트워크에 연결된 정보가전기기들은 공격에 의한 보안 취약성을 가진다. 따라서 디지털홈 환경에서의 보안 프레임워크 구축을 위한 취약성 분석 및 보안 요구사항 연구가 필요하다.

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스마트 기기 환경에서 전력 신호 분석을 통한 프라이버시 침해 위협 (Threatening privacy by identifying appliances and the pattern of the usage from electric signal data)

  • 조재연;윤지원
    • 정보보호학회논문지
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    • 제25권5호
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    • pp.1001-1009
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    • 2015
  • 스마트 그리드 안에서 고안된 스마트 미터는 우리가 사용하는 전력 신호를 실시간으로 데이터화해서 전력 공급단의 메인 서버로 전송한다. 이를 통해 전력 관리의 효율성은 증가한 반면, 사용자의 정보를 담은 데이터의 보안 문제가 새로운 위협으로 부상하였다. 본 논문은 스마트 미터에서 추출한 전력 데이터를 통해 가정 내 기기의 식별 및 기기별 사용패턴에 대한 추론을 보안 관점에서 해석함으로써 스마트 기기 환경에서 데이터 노출의 위협을 지적한다. 주성분분석(Principal Component Analysis)으로 데이터의 특징을 추출하였고 k-근접 이웃(k- Nearest Neighbor)분류기로 기기를 식별하고 기기상태를 추론하였으며, 검증방법으로는 10차 교차검증(10-fold Cross Validation)을 활용하였다.

통합리모컨의 태스크기반 사용자 인터페이스 생성을 위한 가전기기 마크업 언어 (Home Appliance Markup Language for Generating Task-Based User Interfaces of Universal Remote Controls)

  • 임성수;조성배
    • 한국정보과학회논문지:소프트웨어및응용
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    • 제37권1호
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    • pp.19-28
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    • 2010
  • 최근 각종 가전기기들이 유/무선을 통해 연결되어 하나의 서비스를 제공하고 있지만, 기기제어를 위한 인터페이스는 통합되지 않고 각각 존재한다. 따라서 사용자는 각 기기를 어떻게 제어해야 하는지를 숙지해야 하고, 기기의 기능들이 서로 어떻게 결합되어 서비스를 제공하는지 알아야 한다. 하지만 기기제어를 위한 리모컨에는 기기의 복잡한 기능 제어를 위해 사용성이 높지 않은 다수의 버튼이 존재하며 각 기기별로 비슷한 모양의 리모컨들이 존재하므로, 하나의 서비스를 제공받기 위해 다수의 리모컨을 사용해야 하는 사용자에게 많은 어려움이 있다. 본 논문에서는 다양한 기기들이 서로 연결되어 제공되는 서비스 작업단위를 태스크로 정의하고, 사용자가 원하는 서비스를 손쉽게 제공받을 수 있도록 태스크 단위의 사용자 인터페이스 생성을 위한 가전기기 마크업 언어(Home Appliance Markup Language; HAML)를 제안한다. HAML은 태스크 제어에 꼭 필요한 버튼들만을 모아 하나의 인터페이스를 구성하고, 태스크 수행을 위한 기기 설정의 자동화 기능을 제공한다. 시스템 동작 시나리오와 사용성 평가를 통해 제안하는 방법의 유용성을 검증한다.

사물인터넷 보안 문제제기와 대안 (Security Vulnerability of Internet of Things and Its Solution)

  • 최희식;조양현
    • 디지털산업정보학회논문지
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    • 제11권1호
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    • pp.69-78
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    • 2015
  • Internet of Things(IoT) is electronic devices and household appliances use wireless sensor network in environment of high speed wireless network and LTE mobile service. The combination of the development of Internet and wireless network led to development of new forms of service such as electronic devices and household appliances can connect to the Internet through various sensors and online servers such as a Home Network. Even though Internet of Things is useful, there are problems in Internet of Things. In environment of Internet of Things, information leakage could happens by illegal eavesdropping and spoofing. Also illegal devices of wireless communication interference can cause interfere in Internet of things service, physical damage and denial of service by modulation of data and sensor. In this thesis, it will analyze security threats and security vulnerability in environment of mobile services and smart household appliances, then it will suggest plan. To solve security issues, it is important that IT and RFID sensor related companies realize importance of security environment rather than focus on making profit. It is important to develop the standardized security model that applies to the Internet of Things by security-related packages, standard certification system and strong encrypted authentication.

Multi-Objective Optimization Model of Electricity Behavior Considering the Combination of Household Appliance Correlation and Comfort

  • Qu, Zhaoyang;Qu, Nan;Liu, Yaowei;Yin, Xiangai;Qu, Chong;Wang, Wanxin;Han, Jing
    • Journal of Electrical Engineering and Technology
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    • 제13권5호
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    • pp.1821-1830
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    • 2018
  • With the wide application of intelligent household appliances, the optimization of electricity behavior has become an important component of home-based intelligent electricity. In this study, a multi-objective optimization model in an intelligent electricity environment is proposed based on economy and comfort. Firstly, the domestic consumer's load characteristics are analyzed, and the operating constraints of interruptible and transferable electrical appliances are defined. Then, constraints such as household electrical load, electricity habits, the correlation minimization electricity expenditure model of household appliances, and the comfort model of electricity use are integrated into multi-objective optimization. Finally, a continuous search multi-objective particle swarm algorithm is proposed to solve the optimization problem. The analysis of the corresponding example shows that the multi-objective optimization model can effectively reduce electricity costs and improve electricity use comfort.

다변량 프로빗 모형을 이용한 가전제품 구매의 상관관계 분석 (Correlation among Ownership of Home Appliances Using Multivariate Probit Model)

  • 김창섭;신정우;이미숙;이종수
    • 마케팅과학연구
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    • 제19권2호
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    • pp.17-26
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    • 2009
  • As the lifestyle of consumers changes and the need for various products increases, new products are being developed in the market. Each household owns various home appliances which are purchased through the choice of a decision maker. These appliances include not only large-sized products such as TV, refrigerator, and washing machine, but also small-sized products such as microwave oven and air cleaner. There exists latent correlation among possession of home appliances, even though they are purchased independently. The purpose of this research is to analyze the effect of demographic factors on the purchase and possession of each home appliances, and to derive some relationships among various appliances. To achieve this purpose, the present status on the possession of each home appliances are investigated through consumer survey data on the electric and energy product. And a multivariate probit(MVP) model is applied for the empirical analysis. From the estimation results, some appliances show a substitutive or complementary pattern as expected, while others which look apparently unrelated have correlation by co-incidence. This research has several advantages compared to previous literatures on home appliances. First, this research focuses on the various products which are purchased by each household, while previous researches such as Matsukawa and Ito(1998) and Yoon(2007) focus just on a particular product. Second, the methodology of this research can consider a choice process of each product and correlation among products simultaneously. Lastly, this research can analyze not only a substitutive or complementary relationship in the same category, but also the correlation among products in the different categories. As the data on the possession of home appliances in each household has a characteristic of multiple choice, not a single choice, a MVP model are used for the empirical analysis. A MVP model is derived from a random utility model, and has an advantage compared to a multinomial logit model in that correlation among error terms can be derive(Manchanda et al., 1999; Edwards and Allenby, 2003). It is assumed that the error term has a normal distribution with zero mean and variance-covariance matrix ${\Omega}$. Hence, the sign and value of correlation coefficients means the relationship between two alternatives(Manchanda et al., 1999). This research uses the data of 'TEMEP Household ICT/Energy Survey (THIES) 2008' which is conducted by Technology Management, Economics and Policy Program in Seoul National University. The empirical analysis of this research is accomplished in two steps. First, a MVP model with demographic variables is estimated to analyze the effect of the characteristics of household on the purchase of each home appliances. In this research, some variables such as education level, region, size of family, average income, type of house are considered. Second, a MVP model excluding demographic variables is estimated to analyze the correlation among each home appliances. According to the estimation results of variance-covariance matrix, each households tend to own some appliances such as washing machine-refrigerator-cleaner-microwave oven, and air conditioner-dish washer-washing machine and so on. On the other hand, several products such as analog braun tube TV-digital braun tube TV and desktop PC-portable PC show a substitutive pattern. Lastly, the correlation map of home appliances are derived using multi-dimensional scaling(MDS) method based on the result of variance-covariance matrix. This research can provide significant implications for the firm's marketing strategies such as bundling, pricing, display and so on. In addition, this research can provide significant information for the development of convergence products and related technologies. A convergence product can decrease its market uncertainty, if two products which consumers tend to purchase together are integrated into it. The results of this research are more meaningful because it is based on the possession status of each household through the survey data.

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저속 전력선 통신 기반의 가전기기용 통신장치의 통신 인터페이스 모듈의 설계 (Design of Communication Interface Module for Home-appliances based on Low-speed Power Line Communications)

  • 이감록;이재민;명관주;김동성;권욱현
    • 대한전기학회:학술대회논문집
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    • 대한전기학회 2002년도 하계학술대회 논문집 D
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    • pp.2556-2558
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    • 2002
  • In this paper, the design guideline of communication interrace module for home-appliances is proposed. The requirements of the interface between white-goods and communication module are analyzed. Finally, the proposed interface structure is implemented using PLC technology.

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노인단독가구의 주행위와 가구.가전제품의 사용 특성 (The Characteristics of Living Behavior and Using Furniture and Home Appliances by Elderly-Headed Households)

  • 권오정;이용민;하해화;신혜인;김형우
    • 한국주거학회논문집
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    • 제21권1호
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    • pp.31-42
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    • 2010
  • The purpose of this study was to analyze behavioral patterns of elderly residents and to identify the characteristics of using furniture and home appliances by elderly-headed households. For this purpose, field studies that included observation and open-ended interview were conducted with 52 elderly-headed households. The major findings of this study were as follows: elderly-headed households need home appliances with lighter body, lower capacity and simple functions. Furniture for elderly people should be designed to minimize the inconvenience of using western style furniture, also the behavior patterns which are important to the elderly like taking medicine have to be considered. And it is necessary to design furniture and equipments properly to prevent accidents happened in housing. Lastly, because the elderly relies heavily on watching TV, it will be desirable to apply TV-friendly devices such as home networking and home automation. Research results will be useful information on product design to reflect characteristics of elderly and follow-up studies associated with each furniture and appliances and specific living behavior are needed.

Approaches to Suppressing Shaft Voltage in Non-Insulated Rotor Brushless DC Motor driven by PWM Inverter

  • Isomura, Yoshinori;Yamamoto, Kichiro;Morimoto, Shigeo;Maetani, Tatsuo;Watanabe, Akihiko;Nakano, Keisaku
    • Journal of international Conference on Electrical Machines and Systems
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    • 제3권3호
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    • pp.241-247
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    • 2014
  • The voltage source PWM inverter generally used to drive the air conditioning (A/C) fans has been posing a large issue that the bearings in air conditioning fan motors are highly possible to be corroded electrically. Potential difference called shaft voltage is generated between inner and outer rings of the bearings due to inverter switching. The shaft voltage causes bearing lubricant breakdown dielectrically. As a result, bearing current is caused. This current causes the bearing corrosion. In previous work, we demonstrated that the shaft voltage can be reduced by using an insulator inserted between the outer and inner cores of the rotor in an air conditioning fan motor without grounding. This paper proposes the other countermeasure for reducing the shaft voltage in fan motors. The countermeasure which adds a capacitor between the brackets and the stator core is effective even for fan motors with non-insulated rotor. The effectiveness is confirmed by both simulated and experimental results.

The System of Waste Home Appliances Recycling in Taiwan

  • Ma, H.K.;Li, K.C.;Wu, N.M.;Chang, W.C.
    • 대한전자공학회:학술대회논문집
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    • 대한전자공학회 2001년도 The 6th International Symposium of East Asian Resources Recycling Technology
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    • pp.43-47
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    • 2001
  • The waste home appliances including television sets, refrigerators, washing machines and air conditioners have increasingly received environmental concerns in Taiwan. In light of the enforcement of Waste Disposal Act (WDA), the Taiwan Environmental Protection Administration (EPA) has certified 60 recycling/storage facilities and given permission for qualified companies to build six treatment plants around the island. Now the recycling and well treatment home appliances are estimated to be 3,342,369 units until May 31, 2001. This paper describes the present status of waste home appliance recycle and its treatment in Taiwan. The principle guidelines and policies regarding recycling, resource recovery and environmental concerns are presented.

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