• 전기의세계
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• v.46 no.8
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• pp.31-33
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• 1997

현대 사회는 전기 에너지 없이는 하루도 유지될 수 없는 사회이다. 최근의 대도시 인구집중현상으로 전력수요의 밀도가 급격히 높아짐에 따라 전력전송의 중요성이 날로 증대되고 있으며, 이를 위한 전력 케이블은 전기 에너지를 전달하는 현대 문명 사회의 동맥으로 인정되고 있다. 전력 케이블은 1812년 러시아에서 shilling이 고무 절연선을 최초로 사용한 이후 절연 재료 및 생산 기술의 발전에 힘입어 현재에는 신뢰성 높은 제품이 송전 및 배전 선로에 사용되고 있다. 이러한 전력 케이블은 지절연 케이블과 고체절연 케이블로 대별되며, 케이블 상호간의 접속 및 가공선 또는 전기 기기와의 접속을 위해 접속함과 함께 실선로에 포설된다. 본 고에서는 전력 케이블과 그 접속함에 대한 기술 동향에 대하여 서술하고자 한다.

• Proceedings of the Korean Institute of Navigation and Port Research Conference
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• 2014.10a
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• pp.280-282
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• 2014

DMB 기반 DGPS 시스템은 기존 중파 DGPS의 음영구역 해소 및 내륙에서의 DGPS 이용자 활성화를 목적으로 개발된 전달매체이다. 본 연구는 향후 유동인구와 교통량이 많아 이용 수요가 크게 예상되며, 멀티패스 등의 영향으로 측위 오차가 큰 도심에서 저가형 수신기를 이용하여 실제 기준국 및 가상 기준국의 DGPS 보정정보를 DMB 기반으로 수신하여 수신환경 수신기별 정지측량과 이동측위를 측정한 결과를 분석하였다.

• ETRI Journal
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• v.9 no.2
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• pp.81-91
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• 1987

정보화 사회로의 변천에 따른 앞으로의 전송망은 각종 데이터 서비스 수용을 위하여 효과적인 대용량 신호전송, 수요 변경에 따른 회선 리루팅, 전송로상의 소요채널 직접액세스 등에 대처할 수 있는 능럭을 갖추어야 한다. 현재 이용되고 있는 비동기 다중 및 전송장치들로는 이들의 특성상 효과적인 망운용이 어려우므로 효율적인 전송망 구축을 위한 새로운 개념의 동기 전송방식이 도입되고 있다. 본고에서는 통합된 전송신호의 전달 및 액세스의 실현을 위하여 미국과 일본에서 추진하고 있는 동기전송계층 신호 및 동기 광전송 시스팀에 대한 기술등향에 대해 분석하였다.

• Proceedings of the Korean Society of Applied Pharmacology
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• 2001.04a
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• pp.33-42
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• 2001

최근 수년간 에너지 섭취와 소비의 균형을 유지하는 것과 깨지는 것에 대한 생리적 기전에 대하여 많은 것이 알려졌다. 비만 만연의 사회적 문제점, 치료해야할 필요성, 음식섭취와 에너지 항상성의 조절 기전, 이와 관련된 물질과 수용체의 기능과 가치, 잠재력 있는 조절인자의 대상에 대하여 기술하였다. 비만은 여러 생리과정의 총화이므로 신체의 즉각적, 장기적 에너지 수요를 원활하게 조절하는 다양한 분자신호전달체계에 각각 작용하는 물질을 찾아 함께 사용하도록 하는 것이 새로운 비만치료제를 개발하는 전략이다.

• Proceedings of the Korean Society of Fisheries Technology Conference
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• 2001.05a
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• pp.128-129
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• 2001

근년 경제성장과 더불어 늘어나는 맞벌이 부부, 교통 체증 등과 같은 사회적, 경제적 요인으로 즉석 식품의 수요가 급증하고 있고, 이로 인하여 칼슘 등과 같은 유용무기성분 및 비타민 등과 같은 미량 성분이 결핍되기 쉽다. 칼슘은 뼈나 치아의 조직에 강도를 부여하는 신체 지지기능 이외에 체액의 pH를 약 알칼리성으로 유지시켜 장관으로부터 흡수한 영양소를 각 세포에 부드럽게 전달하여 세포 및 효소의 활성화에 의한 근육의 수축, 혈액 응고 및 여러 가지 심혈관계 질환의 예방에 관여하는 기능을 한다. (중략)

• The Journal of Korean Institute of Communications and Information Sciences
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• v.40 no.1
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• pp.193-197
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• 2015

Recently, the new issues for the safety and the information delivery system in the ship are raised. The deployment and the efficient algorithms of deploying the wireless sensor networks instead of using the built-in wired networks or the setup of the new wired networks is more desirable than the deployment of the wired networks in a ship after its final production since it can reduce the cost and the time of the brand new wired networks by reshaping some of the internal structure of the ship. In this paper, the shipboard signal propagation measurement system based on the signature sequence-three way slave mode are designed and its measureed data are analysed after measuring the signal propagation characteristics. Consequently, it is expected that the reliable and cost-effective signal measurement system with the three way algorithm for the deployment of the shipboard wireless networks can be achieved.

• Information Systems Review
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• v.25 no.3
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• pp.139-162
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• 2023

With the emergence of new digital technologies into a supply chain, it is essential for companies to incorporate these technologies in managing their supply chains. However, various challenges have been identified in digital supply chain management, especially when it comes to its assessment. There are no universally agreed measurements for the performance of digital supply chain management within the research community so far. This paper explores an option of using user experience as one of possible measurements. Therefore, three different focus-group discussions were held and later analyzed with a qualitative content analysis. The subscription-based video on demand service, Netflix was used as an example in those discussions. Due to the fact that Netflix provides a digital product as a streamline service, user experience is critical for the company. Especially, user experience with a recommender system and related privacy issues have become significant for a company to retain existing customers and attract new customers in many fields. Since the recommender system and related privacy issues are parts of a digital supply chain, user experience can be one of appropriate measurements for digital supply chain management. This study opens a new perspective for research on performance measurements of digital supply chain management.

• Journal of Internet Computing and Services
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• v.25 no.1
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• pp.9-15
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• 2024

As virtual reality technology became popular, a high demand emerged for natural and efficient interaction with the virtual environment. Mid-air manipulation is one of the solutions to such needs, letting a user manipulate a virtual object in a 3D virtual space. In this paper, we focus on manipulating a remote virtual object while visually displaying the object and providing tactile information on the object's weight. We developed two types of wearable interfaces that can provide cutaneous or vibrotactile feedback on the virtual object weight to the user's fingertips. Human perception of the remote virtual object weight during manipulation was evaluated by conducting a psychophysics experiment. The results indicate a significant effect of haptic feedback on the perceived weight of the virtual object during manipulation.

• Journal of Digital Convergence
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• v.14 no.5
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• pp.333-339
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• 2016

Technology to optimize and utilize the use and supply of the electric power between consumer and supplier has been on the rise among the smart grid power market network in electric power demand management based on the Internet. Open Automated Demand Response system protocol, which can deliver Demand Response needed in electric power demand management to electricity supplier, system supplier and even the user is openADR 2.0b. This paper used the most credible, cosmopolitanly proliferated EPRI open source and analysed the variety of security vulnerability that developed VEN and VTN system may have. Using the simulator for attacking openADR protocol, the VEN/VTN system that has been implemented as EPRI open source was conducted to attack in a variety of ways. As a result of the analysis, we were able to get the results that the VEN/VTN system has security vulnerabilities to the parameter tampering attacks and service flow falsification attack. In conclusion, if you want to implement the openADR2.0b protocol system in the open or two-way communication environment smart grid network, considering a variety of security vulnerability should be sure to seek security technology and services.

• Archives of design research
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• v.14 no.4
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• pp.227-235
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• 2001

At present the educational envelopment of our country was placed in the difficult situation that cannot help but coping with the situation positively and actively against a lot of change and the crisis inside and outside. By employing the UI(university Identity) or CI(College Identity) for the communication method to overcome the above present situation and to take a triangular position again, those are recognized that making an effort to amend or re-generate the present images is important in the management of college. But UI or CI are upright and have strong feeling on the specific character of college which is called as educational organization. And in its application, it shows weak point that cannot scope softly against the changing current of times by lack of adaptability. By congesting the restriction of conveyance of image and upright nature of such operation, and also by developing the Image Mark that can convey variety, affection and polished feeling, and further by conveying the future-oriented images aimed by college to the educational consumers closely and softly, it is to take the roils faithfully for the strengthening of competitive power of college. In addition, in order to convey college image softly and effectively and also utilize as a means of positive propaganda, character was developed together.