• 지식경영연구
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• 제12권2호
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• pp.56-68
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• 2011

The rapid changes in business environments are also applicable to the delivery service field. Numerous companies are using smart phones in order to perform work of the delivery service field that is rapidly developing every year. Smart phones established ubiquitous work environments where access to the server of the head office is possible through telephones, scanners, and the internet anywhere and anytime. However, although smart appliances including smart phones have been diffused, empirical analysis of use of them in actual has not been attempted much. In this regard, current study empirically analyzes how connectivity and context-awareness function of smart phones based on the TAM(Technology Acceptance Model) influence the continuous intention to use through trust, usefulness, and ease of use. The results indicate that the connectivity and context-awareness function, which are natures of smart phones, had impacts on the ease of use and trust, but not on the usefulness. Based on these results, this study suggests implications and future research directions regarding the planning and realization of smart appliances.

• 한국IT서비스학회지
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• 제13권2호
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• pp.1-17
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• 2014

Social networking service (SNS) is a service that allows people to share information, manage relationships with others, and express themselves on the Internet. The number of SNS users have increased explosively with the growth of mobile devices such as smartphones. As the influence of SNS has grown extensively, potential threats to privacy have also become pervasive. The purpose of this study is to empirically examine the main factors that affect users' intentions to use security functions provided by their SNS. The main theories for this study include the rational choice theory and the theory of planned behavior. This study has identified the factors that affect intention to use security functions. In addition, security function awareness and information security awareness are found to be important antecedents for intention to use security functions. The results of this study implies that when SNS providers develop security policies, they should consider the ways to improve users information security awareness and security function awareness simultaneously.

• 한국철도학회:학술대회논문집
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• 한국철도학회 2003년도 추계학술대회 논문집(III)
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• pp.634-639
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• 2003

The static inverter is mainly used to provide with the electric power of various loads in the train. In the recent european projects, the specification of static inverter become harder, and many additional service function is expected. It takes long time and high cost to develope a static inverter with these high performances and additional function. But, these are became general demands for static inverter in the many projects from now on. The APSE(Auxiliary Power Supply Equipment) is a static inverter of high performance to satisfy the severe specification and various service function following these tendency for Athens project In this paper, the specification of APSE and various service functions are introduced to look about current tendencies of static inverter.

• 보건의료산업학회지
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• 제13권1호
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• pp.67-78
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• 2019

Objectives: To identify the factors affecting the cognitive function according to the education level of people aged 65 or older. Methods: This study used the data from the 2014 survey of living conditions and welfare needs of Korean older adults. A total of 10,248 people were analyzed in the final analysis, not including those who responded by proxy and those who did not participate in cognitive function tests. Cognitive function was measured by Mini Mental State Examination -Dementia Screening(MMSE-DS), and logistic regression was performed using the SPSS/WIN 24.0 program. Results: There were differences in factors affecting cognitive function depending on the education level. Overall, regular exercise had a positive effect on maintaining cognitive function, and the higher the education level, the more important it was to maintain the Instrumental Activities of Daily Living(IADL). In addition, for lower education levels, improving the life satisfaction was important to prevent the decline of cognitive function. Conclusions: Based on the results of this research, it is suggested that customized approaches shoud be taken according to education level when developing and implementing programs to prevent the decline of cognitive function.

• 한국컴퓨터정보학회논문지
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• 제25권12호
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• pp.119-126
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• 2020

본 논문에서는 BLE 비콘을 기반으로 하는 제품 정보 안내 시스템을 설계하고 구현한다. 이 시스템은 모바일 티켓을 통한 비접촉 입장 서비스, 좌석 안내 서비스, 이벤트 Push 서비스, 콘텐츠 Push 서비스, 공공 서비스 등의 다양한 기능을 제공하도록 설계한다. 이 시스템은 3개 모듈인 비콘 인식 모듈, 서버 연동 모듈, 콘텐츠 전송 모듈로 구성된다. 비콘 인식 모듈은 스마트 폰을 가진 고객이 가용 서비스 영역에 접근하면 근접한 비콘의 특정 ID를 전송하는 기능을 구현한다. 서버 연동 모듈은 비콘 ID 값을 인식하여, 서버로 전달하고, ID를 가지고 있는 서버 위치를 확인하는 기능을 구현한다. 콘텐츠 전송 모듈은 해당 위치에 설정된 이벤트나 서비스 정보를 스마트 폰으로 전송하는 기능을 구현한다. 본 논문에서 구현한 비콘 기반의 제품 정보 안내 시스템을 활용하면 다양한 제품 정보 안내 시스템을 빠르고, 쉽게 구현할 수 있다는 장점이 있다.

• 한국산학기술학회:학술대회논문집
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• 한국산학기술학회 2003년도 Proceeding
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• pp.243-246
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• 2003

This system is unionized form about GPS and a pocket game machine. This game machine of the use only for the game with an existing system but the function of various purposes which carries out service relevant to a user's position information. This system have the game function, the function to offer space guidance service by the theme interlocked with a user's position, and the traffic safety education function.

• 교육시설 논문지
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• 제24권6호
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• pp.27-36
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• 2017

Educational facilities have an affect to make a decently learning environment. After constructed, it needs a maintenance plan to keep the performance or function which provide the repair time, repair scope and ratio. But the fundamental data are so insufficient that the field worker can't provide the maintenance plan and has no choice use the other data which concerned with apartment or office building. Above all, the service life is indispensible to make a repair plan because the repair time and scope would be provided within the service life. This study aimed at providing the method to make a service life of component in educational facilities and applying the method into the roof proof and floor finishing. Results are shown that first, it is important to set the $1^{st}$ repair time after constructed. when it proposes the three ways with the probability approach, choice probability model and cumulative cost function. Second, the service life of roof proof is provided with about 35 years. In addition, the service life of the floor finishing is about 40 years. These result would be utilized to conduct the repair plan under the service life.

• 한국정보통신학회논문지
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• 제12권12호
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• pp.2277-2285
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• 2008

최근 많은 모바일 디바이스 환경에서 웹서비스 이용에 대한 요구가 증가하고 있지만 현실의 여러 가지 한계와 문제점들로 인해 무선 네트워크에서의 웹 브라우징은 많은 제약이 발생한다. 최근의 급속하게 변화하는 웹 환경에서 이전의 웹서버 성능으로는 다양한 요구 사항을 만족할 수 없기 때문에, 모바일 웹서비스 엔진의 성능 향상이 필요하다. 따라서 본 논문에서는 인터미디어리 기술을 모바일 웹 서비스에 도입하여 웹서비스 이용자를 위한 서비스 환경을 개선한다. 본 논문에서는 모바일 웹서비스의 성능 향상과 모바일 디바이스와 웹서버의 상호운용을 위한 인터미디어리 기반 웹서비스 프레임워크를 설계 구현한다.

• 한국지리정보학회지
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• 제19권3호
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• pp.1-15
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• 2016

최근, 새천년생태계평가(MA: Millenium Ecosystem Assessment), 생태계와 생물다양성의 경제학(TEEB: The Economics of Ecosystems and Biodiversity) 등의 체계에 따라 생태계서비스를 평가하는 연구가 활발히 이루어지고 있다. 그러나 기존 대부분의 연구에서는 생태계기능 평가량에 화폐적 가치를 곱하여 생태계서비스를 평가하고 있어 생태계서비스와 관련된 환경 및 사회경제적 조건을 반영하지 못하고 있다. 본 연구에서는 자연 및 사회경제적 요소를 반영한 생태계서비스 평가방안을 제시하고자 하였다. 우선, 수원함양기능을 InVEST의 Water Yield 모형을 통해 평가하였고 수원함양기능에 강수량과 인구를 반영하여 수원함양의 생태계서비스를 평가하였다. 평가결과, 토지피복, 토양 등의 자연조건을 반영한 수원함양기능과 강수량 및 인구 등의 기후 및 사회경제적 인자를 추가적으로 고려한 생태계서비스의 공간분포는 서로 다른 양상을 보였다. 즉, 같은 수원함양기능을 보인 지역이라도 강수량이 적고 인구가 많은 지역에서 수원함양의 생태계서비스가 높은 것으로 나타났다. 본 연구를 통해 수원함양의 생태계서비스는 수원함양기능에 추가적으로 기상 및 사회경제적 인자를 고려하여 평가되어야 한다는 것을 제시하였으며, 평가과정은 다른 분야의 생태계서비스평가에 유용하게 활용될 것으로 기대된다.

• 보건의료산업학회지
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• 제10권3호
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• pp.147-158
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• 2016

Objectives : The aim of this study was to investigate predictors of cognitive function decline among community dwelling elderly. Methods : Data were analyzed from the Survey of Living Condition of Elderly panel study. Cognitive function was measured with the MMSE-KC at baseline and year 3. The study subjects were 5,464 community dwelling people aged 65 years or older who had no disability at baseline. Logistic regression analysis was used to predict cognitive function decline. Results : From 2008-2011, 4,417(80.8%) elderly people had no cognitive decline, and 1,074(19.2%) showed cognitive function decline measured by the MMSE-KC. After adjusting for demographics and baseline MMSE-KC score, the best predictors for cognitive function decline at 36 months were diabetes mellitus, smoking, low intensity physical activity, relationship with relatives and friends. Conclusions : Health promotion programs that are focused on the elderly are essential in preventing cognitive function decline. Promoting regular physical activity, and social relationships should be included in health promotion for elderly. When treating patients with diabetes, preventing cognitive impairment should be considered through education and counseling.