• 대한물리의학회지
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• 제9권2호
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• pp.141-149
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• 2014

PURPOSE: This study uses X-rays investigate how university students' smart phone use affects the cervical vertebral angle. METHODS: Ninety-two randomly selected students agreed to participate in this study. The participants' number of hours of smart phone use was gathered using a questionnaire. An X-ray of the participants' cervical vertebrae was taken, and the cervical vertebral angle was measured using the Cobb and the absolute rotation angle (ARA) method. Also, the relation between pain and hours of smart phone use was identified using a visual analog scale (VAS). Using SPSS ver18, the relationships among the cervical vertebral angle and the items in the questionnaire were identified and a frequency analysis, an independent t-test, and the analysis of variance (ANOVA) were calculated. RESULTS: The study showed that an increase in the number hours of smart phone per day led to cervical lordosis(p<0.05). The relationships between points of smart phone addiction and cervical vertebral angle have a negative correlation (p<0.05). Therefore, there are the higher smart phone addiction points, the decrease the cervical vertebral angle. CONCLUSION: The results of the study showed that increase in smart phone use lead to cervical lordosis, and smart phone addiction scores resulted in decreased in the cervical vertebral angle.

• 한국항공운항학회지
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• 제27권2호
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• pp.1-8
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• 2019

Optimal path planning refers to find the safe route to the destination at a low cost, is a major problem with regard to autonomous navigation. Sampling Based Planning(SBP) approaches, such as Rapidly-exploring Random Tree Star($RRT^*$), are the most influential algorithm in path planning due to their relatively small calculations and scalability to high-dimensional problems. $RRT^*$-Smart introduced path optimization and biased sampling techniques into $RRT^*$ to increase convergent rate. This paper presents an improvement plan that has changed the biased sampling method to increase the initial convergent rate of the $RRT^*$-Smart, which is specified as m$RRT^*$-Smart. With comparison among $RRT^*$, $RRT^*$-Smart and m$RRT^*$-Smart in 2 & 3-D environments, m$RRT^*$-Smart showed similar or increased initial convergent rate than $RRT^*$ and $RRT^*$-Smart.

• 한국컴퓨터정보학회논문지
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• 제24권8호
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• pp.37-43
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• 2019

The existing smart farm technology has been systematized for the mass production rather than the consumer. There are many problems such as economical aspect to apply to actual rural environment due to aging. The purpose of this study is to apply smart farm technology based on the applicability of population aged in rural areas. Due to the heat wave, the crops in general greenhouse cultivation facilities suffered from damage such as sunlight damage. To minimize such damage, adjust the temperature and humidity environment or install a light-shielding film. However, the workers in the rural areas are aging and the elderly who are farming alone have a lot of difficulties in doing so. In the case of people with weak physical strength, there is a danger that they may lead to safety accidents when carrying heavy loads. In this paper, we propose 'Smart Palm capable of automatic transportation function', applying small smart vehicles that follow workers to existing smart farms to improve and prevent these problems. It is a smart farm that performs the control functions of the existing smart greenhouse environment, installs the rail for each trough, and has a vehicle that follows the worker. The smart app can directly control the greenhouse and the vehicle remotely manually.

• 디지털융복합연구
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• 제9권5호
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• pp.99-111
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• 2011

오늘날 SNS를 포함하여 다양한 스마트미디어들의 급속한 보급으로 새로운 스마트융합시대가 도래하고 있다. 그러나 이러한 스마트융합사회가 아직 효율적이지는 못하다. 특히 장시간의 로딩시간, 비싼 단말기와 이용료, 개인정보의 유출, 스팸메일과 음란폭력물, 잦은 끊김, 접속 장애, 정보격차 등 무수한 이용의 어려움 들이 아직 해결되지 못하고 있다. 이러한 문제점들은 당연히 방송통신 정책의 과제가 될 것이다. 이러한 관점에서 본 논문은 보다 효율적인 스마트융합사회를 만들기 위하여 역동적인 삶의 질에 기초한 방송통신 정책들을 제안하고 있다. 이러한 정책들은 새로운 방송통신 콘텐츠의 개발과 생산 그리고 안정적인 서비스의 제공과 프라이버시의 보호 등 지금까지 제기되는 정책적 과제들을 해결하는데 크게 기여할 수 있는 내용들이다.

• 한국교육학연구
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• 제23권1호
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• pp.183-204
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• 2017

스마트 기술의 발달과 다양한 스마트 매체의 등장은 개인의 학습 환경과 학교교육 현장에 획기적인 변화를 가져왔다. 이에 정부는 학습 환경의 변화에 발맞추어, 2011년 스마트교육 추진 전략을 발표했고, 스마트교육이라는 용어를 공식적으로 등장시켰다. 이후 정부를 중심으로 스마트교육을 학교 현장에 도입하고자 다양한 정책이 실행되어 왔으며, 스마트교육에 관한 연구도 활발히 진행되어 왔다. 그러나 스마트교육이라는 개념이 등장한지 6여 년이 지난 지금까지도 스마트교육은 정체성에 대한 혼란을 안고 있으며, 스마트교육에 대한 명확한 이해가 부재한 상황에서 기술적 측면을 중심으로 정책이 추진되면서 일선현장의 교사들은 스마트교육을 단순히 스마트 기기를 활용한 수업으로 이해하고 있는 경우가 많으며, 이로 인해 스마트교육은 단순히 스마트 기기를 활용한 수업으로 자리잡아가고 있는 실정이다. 본 연구는 스마트교육의 이론적 기틀 마련을 위해 선행연구 분석을 토대로 스마트교육의 속성을 정의하였으며, 스마트교육 연구 가운데 실증 및 사례 연구를 검토 분석하여 실제 교육현장에서 스마트교육이 어떤 속성들을 중심으로 구현되고 있는지를 살펴보았다. 선행연구 분석 결과 도출된 스마트교육의 속성은 정보통신기술(T), 열린 학습 환경(E), 자기주도 학습(S), 맞춤형 학습(C), 소셜 러닝(SL)의 5가지로 나타났다. 실증 및 사례연구를 토대로 분석한 결과, 실제 교육현장에서 구현되고 있는 스마트교육의 속성은 정보통신기술을 기반으로 한 스마트기기 및 매체의 활용을 중심으로 나타났으며, 자기주도 학습, 맞춤형 학습은 스마트교육 환경에서 적절히 활용되지 못하고 있었다. 추후 연구를 통해 스마트교육이 가지고 있는 특성을 교육 현장에서 제대로 활용하여 교육적 효과를 제고하기 위한 연구가 필요하다는 시사점을 도출하였다.

• 융합정보논문지
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• 제9권7호
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• pp.67-77
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• 2019

많은 중소기업이 Smart Factory를 구축할 때 기업 내 외부의 환경변화나 구성원들의 역량 등 기업이 처해있는 상황에 대한 충분한 고려 없이 구축하고 있다. 그래서 구축 후 활용도와 효과도 낮다. 본 연구는 '중소기업의 환경요인과 흡수역량을 통한 Smart Factory 구축'을 실증연구를 통하여 검증해 보는 것이다. 설문은 Smart Factory를 구축한 중소기업에서 관련 업무를 하는 인원에게 받았다. 연구결과는, 첫째, 기업 내 외부의 환경요인은 기업 내부의 흡수역량에 긍정적인 영향을 미쳤다. 둘째, 기업 내부의 흡수역량은 Smart Factory 구축에 긍정적인 영향을 미쳤다. 위의 입증을 통해서 중소기업에서 Smart Factory를 구축할 때 기업의 내 외부 환경요인과 흡수역량을 바탕으로 Smart Factory 핵심영역을 구축하면 효과적이라는 것이 입증되었다. 향후는 Smart Factory 구축성과의 연구를 하고자 한다.

• Journal of Information Technology Applications and Management
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• 제26권2호
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• pp.13-26
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• 2019

The purpose of this study is to examine the effect of each of the two technology acceptance factors(employees' attitude toward smart factory technology, and ease of smart factory technology use) on the introduction level of each of the three smart factory technologies (manufacturing big data technology, automation technology, and supply chain integration technology), and in turn, the effect of each of the three smart factory technologies on manufacturing performance. This study employed PLS statistics software package to empirically validate a structural equation model with survey data from 100 domestic small-and medium-sized manufacturing firms (SMMFs). The analysis results revealed the followings. First, it is founded that employees' attitude toward smart factory technology influenced all of the three smart factory technology introduction levels in a positive manner. In particular, SMMFs of which employees had more favorable attitude toward smart factory technology tended to increase introduction levels of both automation technology and supply chain integration technology more than in the case of manufacturing big data technology. Second, ease of smart factory technology use also had a positive impact on each of the three smart factory technology introduction levels, respectively. A noteworthy finding is this : SMMFs which perceived smart factory technology as easier to use would like to elevate the introduction level of manufacturing big data technology more than in the cases of either automation technology or supply chain integration technology. Third, smart factory technologies such as automation technology and supply chain integration technology had affirmative impacts on manufacturing performance of SMMFs. These results shed some valuable insights on the introduction of smart factory technology : The success of smart factory heavily depends on organization-and people-related factors such as employees' attitude toward smart factory technology and employees' perceived ease of smart factory technology use.

• 디지털융복합연구
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• 제8권4호
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• pp.177-184
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• 2010

모바일 환경에서 사용자들은 실시간으로 언제 어디서나 스마트 폰 서비스를 이용할 수 있을 뿐만 아니라 사용자의 상황에 적합한 정보를 제공받을 수 있다. 이러한 스마트 폰 서비스의 고유한 특성을 반영한 학계의 연구가 부족한 실정임을 감안하여 본 연구에서는 스마트 폰 서비스의 특성들과 사용자 특성에 관해 탐색적 연구를 수행하였다. 연구결과 스마트 폰 서비스 특성과 사용자 특성을 분류하면 다음과 같다. 스마트 폰 서비스 특성은 즉시접속성, 상황 의존성으로, 스마트 폰 사용자 특성은 사용자 친숙도, 사용자 혁신성, 그리고 스마트 폰 기술 특성은 보안성, 연결성으로 분류되었다.

• 지식경영연구
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• 제20권1호
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• pp.215-230
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• 2019

Numerous city problems have arisen in some tourist cities as tourists enter the city beyond the limits of its capacity. As an alternative to this problem, the discussion of smart tourism cities has led many cities to pursue urban planning with the aim of transforming them into smart tourism cities. Therefore, the present study attempted to discuss the city self-reliance that smart tourism cities need to solve a number of problems and grow as a happy city, both residents and tourists, who are the ultimate goal in the long-term goals. More specifically, this study aims to provide basic data for the economic growth of cities that are most fundamental in city's self-reliance by assessing the economic value of smart tourism. To achieve this research purpose, the economic value of smart tourism was estimated using the Contingent Valuation Method (CVM), and the results showed that each person is willing to pay 220,709 won. This is about 10,000 won higher than the 211,163 won announced by the National Travel Survey in 2017, which is estimated to be of higher economic value when recognized as smart tourism. On the basis of these results, this study provided basic policy data in promoting smart tourism cities as well as expanding understanding of smart tourism.

• 한국의류산업학회지
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• 제23권1호
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• pp.84-97
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• 2021

This study examines the impact of perceived risks for smart shoes based on purchase intention by type of smart shoes as well as how they are mediated by fashion innovativeness and technology innovativeness. It also compares the differences between awareness, interest and perceived risk of smart shoes by gender and age. This study was conducted based on men and women in their 20s to 50s who provided 246 samples for data analysis using SPSS 25.0. The results show significant differences in the awareness, interests and perceived economic risk of smart shoes by gender and age. The perceived performance risk had a positive effect on the purchase intention of smart shoes for GPS. Perceived aesthetic-psychological risk had a negative effect on all types of smart shoes. Perceived economic risk had a negative effect on the purchase intention of smart shoes for entertainment; in comparison, perceived social risk had a positive effect on the purchase intention of smart shoes for GPS and entertainment. Fashion innovativeness and technology innovativeness also mediated the relationship between perceived economic risk as well as the purchase intention of smart shoes for healthcare, GPS and entertainment.