• 제어로봇시스템학회논문지
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• 제9권4호
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• pp.296-303
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• 2003

A personal portable type electronic dosimeter using silicon PIN photodiode and small GM tube is recently attracting much attention due to its advantages such as an immediate indication function of dose and dose rate, alerting function, and efficient management of radiation exposure history and dose data. We designed and manufactured a semiconductor radiation detector aimed to directly measure X-ray and v-ray irradiated in silicon PIN photodiode, without using high-priced scintillation materials. Using this semiconductor radiation detector, we developed an active electronic dosimeter, which measures the exposure dose using pulse counting method. In this case, it has a shortcoming of over-evaluating the dose that shows the difference between the dose measured with electronic dosimeter and the dose exposed to the human body in a low energy area. We proposed an energy compensation filter and developed a dose conversion algorithm to make both doses indicated on the detector and exposed to the human body proportional to each other, thus enabling a high-precision dose measurement. In order to prove its reliability in conducting personal dose measurement, crucial for protecting against radiation, the implemented electronic dosimeter was evaluated to successfully meet the IEC's criteria, as the KAERI (Korea Atomic Energy Research Institute) conducted test on dose indication accuracy, and linearity, energy and angular dependences.

• 설비공학논문집
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• 제28권2호
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• pp.49-54
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• 2016

The purpose of this study is to analyze the indoor temperature distribution of a room controlled by a personal and portable cooler. As an energy saving strategy, the personal air-conditioning or task conditioning system was developed and installed in office buildings in the 90 s. Many research results regarding the personal air-conditioning (PAC) system were focused on thermal comfort, localized ventilation efficiency and energy savings. However, the conventional PACs were only developed for application in office buildings. In this study, as a type of PAC, a portable cooler was analyzed in terms of indoor temperature distribution changes with the passage of time. The measurement was performed in a bedroom in an apartment house. The results showed that indoor temperature was controlled at about $24^{\circ}C$ around the human body. However, the ambient zone up to 1.5 m away from the the human body stayed at about $27.5^{\circ}C$.

• 보건의료산업학회지
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• 제6권4호
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• pp.279-294
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• 2012

The study compared refractive surgery patients' hospital selection factors and satisfaction, through this to see the factors influencing patients' satisfaction, aiming at 235 patients visiting two Eye hospitals. The research results are followed. First, target group's hospital selection factors appeared facilities and environment factor, reliability factor, personal service factor, and accessibility factor in the order. Second, patients' satisfaction appeared reliability factor, facilities and environment factor, and personal factor in the order. Fourth, in the result comparing patients' expectation on hospital selection and satisfaction score, all factors of facilities and environment, personal service, and reliability had high satisfaction score than expectation. Third, in the result of factors influencing refractive surgery patients' satisfaction, in surgery determination period, surgery expenditure, and hospital selection factors among characteristics relating to refractive surgery, facilities and environment, personal service, and reliability appeared as satisfaction influencing factors. In conclusion, the study found that hospital selection factors and satisfaction influencing factors by refractive surgery patients' surgery type are considered to be able to be used to establish marketing strategy in the fields excluded from insurance application, the researches to improve patients' satisfaction in patient-oriented medical market should be continuously proceeded.

• 한국식품조리과학회지
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• 제22권5호통권95호
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• pp.565-572
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• 2006

The purpose of this study was to evaluate the sanitary management of hotel employees in Seoul. The results were summarized as follows : The total mean of sanitary management perception by factor was 3.91${\pm}$0.62, in which personal sanitation, property management, environment and facility factors were, in order, 3.99${\pm}$0.82, 3.91${\pm}$0.75, 3.90${\pm}$0.86 and 3.85${\pm}$0.82, respectively. This study showed that there was a significant difference in the perception of sanitary management among environment, facility and property management by age based on general characteristics. While there were no differences by hiring type, there was a significant difference among environment, facility and property management with personal sanitation factor according to the employee’s career path. There was also a significant difference between property management and personal sanitation factor according to hotel management style. In addition, a significant difference was observed among environment facility and property management with personal sanitation factor according to work place. In conclusion, it is imperative to continue educational programs for sanitary management by career, work place and management style in order to improve sanitary management of hotel employees’.

• 한국환경과학회지
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• 제12권9호
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• pp.967-976
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• 2003

Volatile organic compounds (VOCs) are present in essentially all natural and synthetic materials from petrol to flowers. In this study, indoor and outdoor VOCs concentrations of houses, offices and internet-cafes were measured and compared simultaneously with personal exposures of each 50 participants in Asan and Seoul, respectively. Also, factors that influence personal VOCs exposure were statistically analyzed using questionnaires in relation to house characteristics, time activities, and health effects. All VOCs concentrations were measured by OVM passive samplers (3M) and analyzed with GC/MS. Target pollutants among VOCs were Toluene, o-Xylene, m/p-Xylene, Ethylbenzene, MIBK, n-Octane, Styrene, Trichloroethylene, and 1,2-Dichlorobenzene. Indoor and outdoor VOCs concentrations measured in Seoul were significantly higher than those in Asan except Ethylbenzene. Residential indoor/outdoor (I/O) ratios for all target compounds ranged from 0.94 to 1.51 and I/O ratios of Asan were a little higher than those of Seoul. Relationship between personal VOCs exposure, and indoor and outdoor VOCs concentrations suggested that time-activity pattern could affect the high exposure to air pollutant. Factors that influence indoor VOCs level and personal exposure with regard to house characteristics in houses were building age, inside smoking and house type. In addition insecticide and cosmetics interestingly affected the VOCs personal exposure. Higher exposure to VOCs might be caused to be exciting increase and memory reduction, considering the relationship between measured VOCs concentrations and questionnaire (p<0.05).

• 디지털융복합연구
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• 제17권11호
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• pp.127-136
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• 2019

소셜 미디어 사용자들이 서비스 업체에 공유하는 정보는 성별, 나이와 같은 개인 식별 정보와 사진, 댓글과 같은 사생활 정보로 구분할 수 있다. 하지만 기존 소셜 미디어 관련 연구들에서는 정보 유형에 따른 의사 결정 차이가 생길 수 있음에도 불구하고 두 정보 유형을 구분하여 정보 공유 의사 결정 차이를 살펴본 연구는 미흡하였다. 그래서 본 연구에서는 정보 유형에 따른 정보 공유 의사 결정 차이를 살펴보고자 한다. 350명의 페이스북 사용자를 대상으로 연구 모형을 분석하였다. 연구 모형 분석 결과, 자기 표현, 신뢰, 인지된 보안은 개인 식별 정보 의지와 사생활 정보 공유 의지 모두에 양으로 유의한 영향을 미쳤다. 하지만, 프라이버시 침해 우려는 개인 식별 정보 의지와 사생활 정보 공유 의지에 부정적으로 유의한 영향을 미쳤다. 본 연구 결과를 통해 개인 정보 공유에 대한 의사 결정과 사생활 정보 공유에 대한 의사 결정이 차이가 없음을 확인할 수 있었다.

• 한국콘텐츠학회논문지
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• 제18권11호
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• pp.13-29
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• 2018

새로운 형태의 방송으로서 인터넷 개인 방송은 점차 많은 이들의 일상 생활 속에서 소비되고 있으며, 시장과 산업 측면에서 그 영향력이 확대되고 있다. 그럼에도 불구하고, 아직까지 인터넷 개인 방송과 관련된 연구는 제한적이다. 본 연구는 장르 레퍼토리 개념을 바탕으로 인터넷 개인 방송 이용자들의 장르 소비구조가 어떤 특성을 가지고 있는지 살펴보고, 이와 더불어 어떤 요인들이 이러한 이용자들의 장르 소비구조에 영향을 미치는 지를 검증하고자 하였다. 특히, 본 연구는 국내 대표적 인터넷 개인 방송 플랫폼인 <아프리카 TV> 이용자를 중심으로 이러한 요인들을 탐색하고 검증해본다. 본 연구의 결과, 연령, 감각추구성향, 정보취득 동기 및 사회적 실재감이 이용자의 인터넷 개인 방송 장르 레퍼토리에 영향을 미치는 것으로 나타났다. 더불어 사회적 실재감이 즐거움 동기와 장르 레퍼토리 사이에서 조절 효과를 보이는 것으로 나타났다.

• 한국정보시스템학회지:정보시스템연구
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• 제28권3호
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• pp.83-104
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• 2019

Purpose Recently, Internet personal broadcasting has been widely spreaded as a new media type by replacing traditional legacy media such as TV. Considering this phenomenon, this study aims to explore the effect of Aristoteles' persuasion factors on Internet personal broadcasting from a rhetorical view. The reason why users watch the Internet personal broadcasting is that they are persuaded by creator's expertness, empathy, or content usefulness. These factors can be regarded as persuasion factors. Therefore, with Aristoteles' rhetorical persuasion factors composed of ethos, pathos, and logos, this paper tries to investigate how persuasion factors affect user's emotional\ attachment and voluntary donation intention. Design/methodology/approach This paper proposes a model of the relationships among three rhetorical factors, user's emotional attachment, and donation intention. Specifically, ethos is regarded as creator's expertness and trustworthiness, and pathos refers to creator's empathy and social interaction. Last, logos refers to content usefulness and credibility. For testing a hypothetical research model, this study collected 468 surveys and empirically tested hypotheses using a structural equation model. Findings This study investigated how rhetorical factors (ethos, pathos, and logos) and emotional attachment further influence user's donation intention. The findings suggest that rhetorical factors of ethos and pathos enhances emotional attachment, followed by donation intention. Contrary to an expectation, however, logos was not significantly related to emotional attachment. Creators of Internet personal media and MCN providers should focus on the different effects of rhetorical factors and pay attention to the role of emotional attachment to encourage user donation.

• 한국산학기술학회논문지
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• 제21권12호
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• pp.873-879
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• 2020

4차 산업혁명의 핵심자원으로 데이터의 중요성이 부각되고 있으며, 기업에서는 개인 데이터를 불법적으로 수집하여 활용하고 있다. 금융권에서는 블록체인, 빅데이터, AI 기술 등을 활용하여 개인 데이터를 안전하게 관리하고 보다 좋은 서비스를 제공하기 위해 활발한 연구가 진행되고 있다. 본 논문에서는 블록체인 기술을 활용하여 개인 데이터를 안전하게 관리할 수 있으며, 기존 시스템 변동 없이 사용할 수 있는 시스템을 제안하였다. 본 시스템의 구성은 블록체인, 블록체인 연동, 서비스 제공기관, 사용자(App) 등으로 구성된다. 블록체인은 종류와 형태 상관없이 사용이 가능하며, 블록체인 연동 부분에서 블록체인 및 서비스를 구분하여 서비스를 제공한다. 서비스제공기관은 개인 데이터를 이용하기 위해 사용자에게 권한을 요청하고 위임 받아야만 개인 데이터에 접근이 가능하다. 기존 마이데이터 서비스는 사용자 휴대폰에 모든 데이터를 저장하므로 탈옥, 루팅으로 인해 정보가 유출될 수 있으나 제안하는 시스템에서는 블록체인에 개인 데이터를 저장하므로 정보 유출 사고를 방지할 수 있다. 추후 블록체인에 저장된 개인 데이터를 이용하여 맞춤형 서비스를 제공할 수 있도록 연구할 것이다.

• 한국콘텐츠학회논문지
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• 제22권7호
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• pp.562-582
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• 2022

1인 미디어 창작활동은 경제적 가치를 창출하는 하나의 산업으로 자리매김하고 있지만, 창작자에 대한 이해는 미비한 실정이다. 본 연구에서는 1인 미디어 창작자가 활동 플랫폼을 선택할 때 고려하는 중요 요인들을 창작자의 동기와 플랫폼의 특성에 초점을 맞추어 분석하였다. 연구결과, 생생함과 경력개발, 알고리즘 기반 적합도를 중시하는 창작자는 유튜브를, 상호작용과 수익창출 동기를 중시하는 창작자는 아프리카TV를, 상호작용, 서비스품질, 네트워킹 기회제공을 고려하는 창작자들은 트위치를 선택할 가능성이 높은 것으로 나타났다. 창작자의 주력 장르와 방송유형 변수의 조절효과 역시 일부 유의한 것으로 확인되었다. 생생함의 동기를 중시하며 소통을 주력장르로 하는 창작자와 경력개발 동기를 가지고 녹화방송에 주력하는 창작자의 경우 모두 유튜브를 선호하는 것으로 나타났다. 본 연구는 1인 미디어 연구에 대한 기존 연구의 시각을 확장하였으며, 미디어 플랫폼의 향후 시장 내 위상 정립의 방향을 제시하였다는 점에 의의가 있다.