• 디지털산업정보학회논문지
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• 제5권4호
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• pp.249-262
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• 2009

HSDPA(High Speed Downlink Packet Access) service has begun nationwide network service since the year 2007 and will be leading technology in mobile service technologies in domestic. But the ARPU(Average Revenue Per Use) from HSDPA has not increased, despite of increasing in subscribers with HSDPA service. It's important to understand why the incresing subscriber with hsdp didn't cause the increasing of its usage. The purpose of this study is to examine factors affecting the intention to adopt and to use HSDPA which refer to the new 3.5 generation communication service, and we are to analyze the relation between the two intentions based on previous studies about technology acceptance.

• 한국건축시공학회:학술대회논문집
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• 한국건축시공학회 2007년도 추계 학술논문 발표대회
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• pp.101-104
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• 2007

Currently most of underground structures in domestic apartment projects are being designed for parking lot and essential parking area is growing due to the increase in car-holding number per household. Moreover, most underground parking lots of today are combined with basement, therefore a pleasant environment in underground space is strongly needed for the dwellers' use. However, there always occur high percentage of humidity and surface condensation in underground parking lot because of the nature of underground structure and they are having a bad influence on the comfort and health of dwellers. Therfore, this study is planned to compare and examine the porformance and properties of currently used construction methods to prevent condensation and finally present the most suitable method.

• 한국정보시스템학회지:정보시스템연구
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• 제16권4호
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• pp.33-49
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• 2007

The purpose of this study is to identify the interorganizational factors that influence both the supplier-buyer's EDI utilization and the business performance in domestic retail industry. In terms of successful supply chain implementation and operation, we deduced the structural factors in the context of the interorganizational characteristics between mass merchandisers and vendors. This study therefore focused on suggesting the ways of managing the partnership in supply chain and conceptualizing the big picture of EDI development model in the scope of a retailer's IT strategy. This paper implicates that it is important to leverage the level of organizational capabilities for the success of supply chain adoption and operation. In the stream of SCM initiatives from the manufacturing industry, retailers should concentrate on improving the interorganizational environment and implementing the effective information technology for supporting business strategy.

• 한국항해항만학회:학술대회논문집
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• 한국항해항만학회 1997년도 Proceedings of KIN-CIN Joint Symposium 97 on Safety of Shipping and History of Maritime Communication between Korea and China around 9th Century
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• pp.35-41
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• 1997

China has integrated maritime safety system which positively and effectively ensures safe navigation and environmental protection. This paper gives brief account on maritime safety rules and regulations, adminstrations and management mechanism, navigation aids and facilities, maritime communication and GMDSS etc. China is a developing country with fast economical growth. With a long coastline of 18,000 kilometers, and 5,000 more islands, China has a fairly developed shipping industry. China also sits in IMO Council as A member. In China , there are over 200 ports with an annual hadnling capacity of over 10,000 tons of cargo ; there are over 4,000 coasters and ocean-going ships with more than 3 million seafarers of which 1/3 being officers ; there are an aggregate gross tonnage 17 million gt for merchant ships. China ranks No.5 shipping country in the world as shown by Lloyd's Maritime Information Services Ltd. 1995. The Chinese shipping industry plays an important role in both domestic transportation and foreign trade. The Chinese government always attaches great importance to maritime safety . Since 1949, and from the adoption of reform-opening policy, China has gradually formed an integrated maritime safety system.

• 한국컴퓨터정보학회논문지
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• 제23권9호
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• pp.141-156
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• 2018

The purpose of this study is how personal information violation risks affect the intention to use domestic cryptocurrency services. VAM(Value based Adoption Model) model is validated as a theoretical background, selecting perceived ease of use, perceived usefulness and perceived security as a benefit factors, and considers perceived cost, technical complexity, and risk of personal information violation risks as sacrifice factors. The method of this study used questionnaire survey to collect 150 data on user's perception on cryptocurrency services, and also performed a structural equation modeling method using by AMOS 23. The result of this paper shows that all hypotheses are accepted statistically significant except 2 hypothesis. This research is concluded that perceived value is affected on statistically positive impact on perceived ease of use, perceived usefulness and perceived security, and negative impact on risk of personal information violation risk, not statistically perceived fee and technical complexity.

• 전자통신동향분석
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• 제38권6호
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• pp.128-136
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• 2023

Lithium accounts for only 0.0017% of the earth crust, and it is produced in geographically limited regions such as South America, the United States, and China. Since the first half of 2017, the price of lithium has been continuously increasing, and with the rapid adoption of electric vehicles, lithium resources are expected to be depleted in the near future. In addition, economic blocs worldwide face intensifying scenarios such as competition for technological supremacy and protectionism of domestic industries. Consequently, Korea is deepening its dependence on China for core materials and is vulnerable to the influence of the United States Inflation Reduction Act. We analyze post-lithium secondary battery technologies that rely on more earth-abundant elements to replace lithium, whose production is limited to specific regions. Specifically, we focus on the technological status and issues of sodium-ion, zinc-air, and redox-flow batteries. In addition, research trends in post-lithium secondary batteries are examined. Post-lithium secondary batteries seem promising for large-capacity energy storage systems while reducing the costs of raw materials compared with existing lithium-based technologies.

• 신재생에너지
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• 제20권1호
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• pp.2-14
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• 2024

Setback regulations stand out as a primary hindrance to the widespread adoption of renewable energy in South Korea. This study analyzed the current status of domestic and international setback regulations, laying the groundwork for an in-depth discussion aimed at improving regulations related to solar photovoltaic setback distances. While setback regulations lack universal standardization across nations, regulations in the United States exhibit certain similarities to those implemented in South Korea. Notably, South Korea has seen a gradual tightening of regulations from 2018 to the present, implementing standards approximately 5 to 10 times stricter than those in the United States.

• 한국통신학회논문지
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• 제30권7B호
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• pp.450-463
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• 2005

ATCA(Advanced Telecom Computing Architecture)는 장기간의 통신 장비 시장의 침체에 돌파구를 마련하기 위해 100여개의 관련 업계가 모여 만든 차세대 표준 네트워크 설계 규격이다. ATCA는 기존 소수의 대형 벤더들이 자사의 고유 시스템을 공급함으로써 발생했던 이기종간의 호환성 문제, 고가의 장비가격, 시스템 변경 및 확장에 있어 어려움, 수요자의 공급업체에 대한 기술 의존성과 같은 문제를 해결할 수 있을 것으로 기대되고 있다. 본 연구에서는 ATCA 기반 장비의 잠재 수요자인 기업의 입장에서 어떠한 요인들을 기준으로 시스템을 채택하는 지를 Rogers의 혁신 이론에 근거하여 살펴보고 있으며 91개 기업체를 대상으로 설문 조사를 실시하여 실증 분석하였다. 로지스틱 회귀분석을 통해 ATCA 장비 구매에 유의한 영향을 주는 요인을 기준으로 군집 분석을 실시하여 기업의 특성에 따른 ATCA 장비 도입 전략을 제시한다.

• 한국콘텐츠학회논문지
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• 제11권1호
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• pp.350-356
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• 2011

본 연구의 목적은 전자적 임상시험 데이터 관리를 위한 설계 시 시간적 요인에 주목하여 시스템의 효율성을 검증해 보고자 함이다. 임상시험 데이터 관리에 대한 관심이 커지고 있고 시스템 도입이 활발한 데 반해, 실제 효율성 측정에 관한 실증연구는 많지 않다. 특히 국내의 경우 임상시험 데이터 관리를 위한 전산화 도입률 조차 낮은 실정이다. 본 연구는 전자적 임상시험 데이터 관리에 대한 중요성 인식 확산을 위하여 전자적 시스템의 효과에 대한 실증연구를 시도하였으며, 시간효율성 측정지표를 활용하여 다기관 임상시험 사례의 자료를 분석하였다. 연구결과로서 전자적 시스템으로의 전환이 임상시험 전체 프로세스에 제공할 수 있는 시간 측면에서의 효율성을 검증하였으며 전자적 임상시험 데이터 관리 시스템의 활용 효과를 분석하기 위한 국내 첫 실증연구의 시도라는 의미가 있다. 나아가 전략적 데이터 관리 수립 및 임상단계 별 비교연구 등 향후 다양한 비교 연구들의 초석이 될 것이다.

• 디지털융복합연구
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• 제14권11호
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• pp.549-555
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• 2016

이 논문의 목적은 미술관 방문 및 참여 증가 요인이 사물인터넷을 통한 서비스 마케팅 강화에 있다고 보고 이론적 관점에서 사물인터넷 도입 후 제공된 클리블랜드 미술관 서비스의 내용과 그로 인한 결과는 무엇인지를 분석하여 한국의 예술기관에 적용할 수 있는 시사점을 찾는데 있다. 분석을 위하여 저널논문, 통계, 기관 및 정부의 보도자료, 뉴스기사, 웹문서, 웹페이지 기사를 수집하여 참조한다. 분석결과는 첫째, 디지털 및 소셜미디어의 적용은 미술관 방문 및 재원 창출에 긍정적이다. 둘째, 사물인터넷의 도입은 미술관의 '교육', '접근성', '의사소통' 서비스의 강화는 물론 체험을 활성화시켜 온 오프라인 참여를 증가시킨다. 셋째, 시스템 구축을 위해 지방정부의 자금지원과 관련업체의 기술지원이 필수적으로 뒷받침되어야 한다. 결론으로 사물인터넷 불모지나 다름 없는 국내 미술관에 관람객의 참여 활성화를 위하여 이와 같은 디지털기술의 적극적인 도입을 제안한다.